added rudel (obby and other colab framework for emacs)

133 files changed, 42684 insertions, 0 deletions

diff --git a/emacs b/emacs
index fc27b21..4c5ac55 100644
--- a/emacs
+++ b/emacs
@@ -383,3 +383,11 @@
         (if mark-active
 	   (kill-ring-save b a)
 	   (kill-ring-save (line-beginning-position) (line-beginning-position 2))))))
+
+
+;; rudel (obby/... connection)
+;(add-to-list 'load-path "SOMEDIR/rudel/")
+;(add-to-list 'load-path "SOMEDIR/rudel/jupiter/")
+;(add-to-list 'load-path "SOMEDIR/rudel/obby/")
+
+(load "rudel-loaddefs.el")
diff --git a/emacs.d/lisp/rudel/.bzrignore b/emacs.d/lisp/rudel/.bzrignore
new file mode 100644
index 0000000..5f6312e
--- /dev/null
+++ b/emacs.d/lisp/rudel/.bzrignore
@@ -0,0 +1,2 @@
+*.elc
+Makefile
diff --git a/emacs.d/lisp/rudel/.svn/all-wcprops b/emacs.d/lisp/rudel/.svn/all-wcprops
new file mode 100644
index 0000000..5ad96b9
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/all-wcprops
@@ -0,0 +1,173 @@
+K 25
+svn:wc:ra_dav:version-url
+V 33
+/svnroot/rudel/!svn/ver/480/trunk
+END
+.bzrignore
+K 25
+svn:wc:ra_dav:version-url
+V 44
+/svnroot/rudel/!svn/ver/353/trunk/.bzrignore
+END
+rudel-icons.el
+K 25
+svn:wc:ra_dav:version-url
+V 48
+/svnroot/rudel/!svn/ver/271/trunk/rudel-icons.el
+END
+rudel-errors.el
+K 25
+svn:wc:ra_dav:version-url
+V 49
+/svnroot/rudel/!svn/ver/261/trunk/rudel-errors.el
+END
+rudel-interactive.el
+K 25
+svn:wc:ra_dav:version-url
+V 54
+/svnroot/rudel/!svn/ver/322/trunk/rudel-interactive.el
+END
+rudel-util.el
+K 25
+svn:wc:ra_dav:version-url
+V 47
+/svnroot/rudel/!svn/ver/306/trunk/rudel-util.el
+END
+rudel-operators.el
+K 25
+svn:wc:ra_dav:version-url
+V 52
+/svnroot/rudel/!svn/ver/181/trunk/rudel-operators.el
+END
+rudel-chat.el
+K 25
+svn:wc:ra_dav:version-url
+V 47
+/svnroot/rudel/!svn/ver/333/trunk/rudel-chat.el
+END
+ChangeLog
+K 25
+svn:wc:ra_dav:version-url
+V 43
+/svnroot/rudel/!svn/ver/478/trunk/ChangeLog
+END
+rudel-overlay.el
+K 25
+svn:wc:ra_dav:version-url
+V 50
+/svnroot/rudel/!svn/ver/465/trunk/rudel-overlay.el
+END
+rudel-loaddefs.el
+K 25
+svn:wc:ra_dav:version-url
+V 51
+/svnroot/rudel/!svn/ver/464/trunk/rudel-loaddefs.el
+END
+rudel-state-machine.el
+K 25
+svn:wc:ra_dav:version-url
+V 56
+/svnroot/rudel/!svn/ver/397/trunk/rudel-state-machine.el
+END
+rudel-hooks.el
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+svn:wc:ra_dav:version-url
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+END
+rudel-operations.el
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+/svnroot/rudel/!svn/ver/181/trunk/rudel-operations.el
+END
+rudel-compat.el
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+V 49
+/svnroot/rudel/!svn/ver/468/trunk/rudel-compat.el
+END
+rudel-mode.el
+K 25
+svn:wc:ra_dav:version-url
+V 47
+/svnroot/rudel/!svn/ver/469/trunk/rudel-mode.el
+END
+README
+K 25
+svn:wc:ra_dav:version-url
+V 40
+/svnroot/rudel/!svn/ver/397/trunk/README
+END
+rudel-speedbar.el
+K 25
+svn:wc:ra_dav:version-url
+V 51
+/svnroot/rudel/!svn/ver/235/trunk/rudel-speedbar.el
+END
+rudel-debug.el
+K 25
+svn:wc:ra_dav:version-url
+V 48
+/svnroot/rudel/!svn/ver/331/trunk/rudel-debug.el
+END
+rudel-backend.el
+K 25
+svn:wc:ra_dav:version-url
+V 50
+/svnroot/rudel/!svn/ver/330/trunk/rudel-backend.el
+END
+rudel-compile.el
+K 25
+svn:wc:ra_dav:version-url
+V 50
+/svnroot/rudel/!svn/ver/347/trunk/rudel-compile.el
+END
+rudel-session-initiation.el
+K 25
+svn:wc:ra_dav:version-url
+V 61
+/svnroot/rudel/!svn/ver/354/trunk/rudel-session-initiation.el
+END
+Project.ede
+K 25
+svn:wc:ra_dav:version-url
+V 45
+/svnroot/rudel/!svn/ver/471/trunk/Project.ede
+END
+rudel-transport.el
+K 25
+svn:wc:ra_dav:version-url
+V 52
+/svnroot/rudel/!svn/ver/316/trunk/rudel-transport.el
+END
+TODO
+K 25
+svn:wc:ra_dav:version-url
+V 38
+/svnroot/rudel/!svn/ver/480/trunk/TODO
+END
+INSTALL
+K 25
+svn:wc:ra_dav:version-url
+V 41
+/svnroot/rudel/!svn/ver/397/trunk/INSTALL
+END
+rudel-protocol.el
+K 25
+svn:wc:ra_dav:version-url
+V 51
+/svnroot/rudel/!svn/ver/245/trunk/rudel-protocol.el
+END
+rudel-tls.el
+K 25
+svn:wc:ra_dav:version-url
+V 46
+/svnroot/rudel/!svn/ver/326/trunk/rudel-tls.el
+END
+rudel.el
+K 25
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+V 42
+/svnroot/rudel/!svn/ver/471/trunk/rudel.el
+END
diff --git a/emacs.d/lisp/rudel/.svn/dir-prop-base b/emacs.d/lisp/rudel/.svn/dir-prop-base
new file mode 100644
index 0000000..8f9583a
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/dir-prop-base
@@ -0,0 +1,5 @@
+K 13
+bzr:pointless
+V 1
+2
+END
diff --git a/emacs.d/lisp/rudel/.svn/entries b/emacs.d/lisp/rudel/.svn/entries
new file mode 100644
index 0000000..df63eca
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/entries
@@ -0,0 +1,1001 @@
+10
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+dir
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diff --git a/emacs.d/lisp/rudel/.svn/text-base/.bzrignore.svn-base b/emacs.d/lisp/rudel/.svn/text-base/.bzrignore.svn-base
new file mode 100644
index 0000000..5f6312e
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/.bzrignore.svn-base
@@ -0,0 +1,2 @@
+*.elc
+Makefile
diff --git a/emacs.d/lisp/rudel/.svn/text-base/ChangeLog.svn-base b/emacs.d/lisp/rudel/.svn/text-base/ChangeLog.svn-base
new file mode 100644
index 0000000..03c4fab
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/ChangeLog.svn-base
@@ -0,0 +1,2403 @@
+2009-10-22  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* TODO (Future): added BEEP and SubEthaEdit tasks
+
+2009-10-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-version): bumped to 0.3
+	* Project.ede (project rudel): bumped version to 0.3
+
+	* TODO: whitespace fixes
+        (Milestone rudel-0.4): new; focus on telepathy transport
+        (Milestone rudel-0.3): added infinote, document trees
+
+2009-10-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* TODO: new file; TODO items for future development and releases
+
+2009-10-12  Phil Hagelberg  <phil@enigma>
+
+        * rudel-mode.el
+	(rudel-mode-line-publish-state--add-indicator-to-mode-line):
+	Replace reference to mode-line indicator that was not present in
+	Emacs 22.
+
+        * rudel-compat.el: add rudel-get-coding-system wrapper function.
+        * rudel-obby-util.el (with-parsed-args): Replace call to
+	Emacs23-specific coding-system-from-name function with
+	rudel-get-coding-system.
+
+        rudel-compat.el: Add string-match-p if not present. (< Emacs 23)
+
+        * rudel-mode.el, rudel-overlay.el: Move use of :safe flag from
+	defcustom to a separate put. Required for Emacs 22 compatibility.
+
+        * rudel-loaddefs.el: Only require rudel-zeroconf if zeroconf is
+	available.
+
+2009-10-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter-delete.el (jupiter-delete::jupiter-transform):
+	fixed error message
+
+2009-10-08  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter.el (header): downcased keywords
+	(object-print): new method; add revisions and log length to string
+	* jupiter/jupiter-nop.el (header): downcased keywords; cosmetic
+	representation changes to "commentary" section
+	* jupiter/jupiter-insert.el (header): downcased keywords; cosmetic
+	changes to "commentary" section
+	(object-print): new method; add start, end, length and data to
+	string representation
+	* jupiter/jupiter-delete.el (header): downcased keywords; cosmetic
+	changes to "commentary" section
+	(jupiter-transform): cosmetic changes
+	(object-print): new method; add position and length to string
+	representation
+	* jupiter/jupiter-compound.el (header): downcased keywords;
+	cosmetic changes to "commentary" section
+	(object-print): new method; add number of children to string
+	representation
+
+2009-10-07  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* doc/card.tex (Session Initiation): mention configured sessions;
+	explain Zeroconf-advertised session in more detail
+
+2009-10-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* doc/card.tex (Joining a Session ...): added global and user
+	passwords
+
+	* rudel.el (rudel-version): use list representation instead of
+	float
+        (rudel-allocate-buffer-function): added documentation string
+
+	* INSTALL (COMPILING): fixed typo
+
+2009-10-06  Phil Hagelberg  <phil@enigma>
+
+        * README (JOINING): Mention `rudel-configured-sessions'
+	customization.
+
+	* README (INTRODUCTION): emphasize obby backend being the only
+	supported one so far
+	(JOINING): update example session with passwords.
+
+	* rudel-loaddefs.el: Add autoloads for rudel-host-session and
+	rudel-speedbar
+
+2009-10-05  Phil Hagelberg  <phil@enigma>
+
+	* README: Mention Eshell issue and license.
+
+2009-10-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-compat.el (make-pulsing-progress-reporter): removed;
+	`make-progress-reporter' is sufficient
+	(progress-reporter-pulse): store index in the car of the reporter;
+	set last update time of the reporter
+	* obby/rudel-obby.el (rudel-connect): use `make-progress-reporter'
+	instead of `make-pulsing-progress-reporter'
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-subscribe-to): cosmetic changes in
+	status messages
+
+	* ChangeLog: updated
+
+2009-10-02  Phil Hagelberg  <phil@enigma>
+
+	* INSTALL: Mention CEDET's inclusion in Emacs
+
+	* rudel-state-machine.el (rudel-state-wait): update progress
+	reporter usage to match rudel-compat.el
+
+	* rudel-compat.el: Use updated progress reporters
+	(progress-reporter-update): may be used by pulsing reporters too
+	(make-progress-reporter): nil max value returns pulsing reporter
+	(progress-reporter-force-update): may be used by pulsing reporters
+	too
+	(progress-reporter-pulsing-p): added
+	(progress-reporter-pulse): removed message change option
+
+2009-10-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-state-machine.el (rudel-state-wait): accept callback
+	function instead of message; adjusted documentation string
+        * obby/rudel-obby.el (rudel-obby-backend::rudel-connect): when
+	calling `rudel-state-wait', provide a callback; the callback
+	controls a progress reporter
+        * obby/rudel-obby-client.el
+        (rudel-obby-connection::rudel-subscribe-to): when calling
+	`rudel-state-wait', provide a callback; the callback controls a
+	progress reporter
+
+        * rudel-compat.el (progress-reporter-pulse): store index as float
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_create):
+	cosmetic changes of printed messages
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_remove):
+	cosmetic changes of printed messages
+
+	* rudel.el (rudel-session::rudel-remove-document): when necessary,
+	detach document first; added documentation string
+	(rudel-document::rudel-attached-p): new method; return non-nil
+	when document is attached to a buffer
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_part):
+	promoted warning severity to :warning
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_remove):
+	fixed lookup of document; added warning message in case it is not
+	found
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/rename):
+	promoted warning severity to :warning
+	(rudel-obby-connection::rudel-unpublish): new method; ask server
+	to remove a document
+
+2009-10-01  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-state-machine.el (rudel-state-wait): fixed progress range
+	[0, 100] -> [0, 1]; fixed reference to reporter object
+	* obby/rudel-obby.el (rudel-obby-send): removed remnants of calls
+	to `working-*' functions; call `progress-reporter-pulse' just
+	before `progress-reporter-done'
+
+2009-09-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-compat.el: only define pulsing progress reporter when
+	Emacs does not have one itself
+	(header): downcased keywords
+	(make-pulsing-progress-reporter): renamed
+	`make-progress-reporter-pulse' ->
+	`make-pulsing-progress-reporter'; cosmetic changes; explanatory
+	comment
+	(progress-reporter-pulse): added documentation string
+	Suggested by Phil Hagelberg
+
+	* rudel-compat.el (progress-pulse-values): new variable; indicator
+	strings used by pulsing progress reporter
+	(make-progress-reporter-pulse): new function; creates pulsing
+	progress reporter
+	(progress-reporter-pulse): new function; updates pulsing progress
+	reporter
+	Suggested by Phil Hagelberg
+
+2009-09-29  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-server-state-before-join::rudel-obby/net6_client_login):
+	accept two additional arguments: global-password and user-password
+
+	* rudel-session-initiation.el (rudel-configured-sessions):
+	improved documentation string
+
+2009-09-29  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (REQUIREMENTS): wording
+	(INSTALLING): mention other things that cause rudel to be
+	autoloaded; minor cosmetic changes
+	(COMPILING): fixed filename compile.el -> rudel-compile.el
+
+	* rudel-compile.el (header): added copyright and meta data
+	(code): let-bind rudel-dir; call `byte-recompile-directory' just
+	once since it operates recursively
+
+2009-09-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el (header): better documentation
+	(require rudel-state-machine): now required for state machine
+	style handling of client connections
+	(require rudel-obby-state): now required; provides base class for
+	states
+	(rudel-obby-server-state-new): new class; client connection state
+	new
+	(rudel-obby-server-state-encryption-negotiate): new class; client connection state
+	for negotiating encryption
+	(rudel-obby-server-state-before-join): new class; client connection state
+	for waiting for login request
+	(rudel-obby-server-state-new): new class; client connection state
+	entered after session setup and joining is complete
+	(rudel-obby-server-connection-states): new variable; list of
+	states and their symbolic names
+	(rudel-obby-client): now derived from rudel-state-machine
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-connect-info):
+	check for :global-password and :user-password correctly; do not
+	put them into the list when they are ""
+	(rudel-obby-backend::rudel-connect): comment
+
+	* rudel-session-initiation.el
+	(rudel-configured-sessions-backend::rudel-discover): let
+	`rudel-session-initiation-adjust-info' do the heavy lifting
+	(rudel-session-initiation-adjust-info): new function; adjust
+	arguments that need adjusting in a session information property
+	list
+
+	* rudel-session-initiation.el (rudel-configured-sessions): more
+	precise specification of the customization type
+
+2009-09-27  Phil Hagelberg <technomancy@gmail.com>
+
+	* compile.el: renamed compile.el -> rudel-compile.el
+
+	* INSTALL: Mention new install process using compile.el and
+	rudel-loaddefs.el.
+
+	* rudel-loaddefs.el: Autoload rudel as one unit instead of
+	piece-by-piece. Remove eieio dependency from autoloads.
+
+	* compile.el: Perform compilation from Elisp
+
+	* Makefile: Remove error-prone CEDET-autogenerated build scripts.
+
+2009-09-27  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-session-initiation.el
+	(rudel-configured-sessions-backend::rudel-discover): fixed a bug
+	that dropped the last option in each configured session
+
+	* rudel-session-initiation.el (rudel-configured-sessions): new
+	customization option; contains a list of session information lists
+	(rudel-ask-protocol-backend::initialize-instance): maybe call next
+	method
+	(rudel-configured-sessions-version): new constant; version of the
+	configured-sessions backend
+	(rudel-configured-sessions-backend): new class;
+	configured-sessions backend
+	(rudel-configured-sessions-backend::initialize-instance): new
+	method; set version slot
+	(rudel-configured-sessions-backend::rudel-discover): new method;
+	"discover" configured sessions
+	(autoload rudel-add-backend): register
+	rudel-configured-sessions-backend as a protocol backend
+
+	* rudel-chat.el (rudel-chat-buffer-name): new constant; name chat
+	log buffer
+	(rudel-chat-handle-buffer): raise buffer when logging a chat
+	message
+
+	* rudel-debug.el (header): fixed meta-data and license
+	(rudel-debug-sent-data-face): added documentation string
+	(rudel-debug-received-data-face): added documentation string
+	(rudel-debug-received-processed-data-face): added documentation
+	string
+	(rudel-debug-state-face): added documentation string
+	(rudel-debug-special-face): added documentation string
+	(rudel-suspend-session-socket): added documentation string
+	(rudel-resume-session-socket): added documentation string
+
+	* obby/rudel-obby-util.el (rudel-obby-dispatch): use
+	`display-warning' instead of `warn'
+	* obby/rudel-obby-state.el (rudel-obby-state::rudel-accept): use
+	`display-warning' instead of `warn'
+	(rudel-obby-document-handler::rudel-obby/obby_document): use
+	`display-warning' instead of `warn'
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_part): use
+	`display-warning' instead of `warn'
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/record):
+	use `display-warning' instead of `warn'
+	* rudel-backend.el (rudel-backend-factory::rudel-load-backends):
+	use `display-warning' instead of `warn'
+
+	* obby/rudel-obby-client.el (require rudel-chat): used when
+	handling chat messages
+	(rudel-obby-client-state-idle::rudel-obby/obby_message): new
+	method; handles obby 'message' messages by dispatching to
+	`rudel-chat-dispatch-message'
+	* rudel-chat.el (whole file): new file; handling of incoming chat
+	messages
+	* Project.ede (target rudel): added rudel-chat.el
+	* Makefile (target rudel_LISP): added rudel-chat.el
+
+2009-09-26  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-state.el (rudel-obby-server-connection-state):
+	new class; base class for server connection states
+	(rudel-obby-server-connection-state::rudel-broadcast): new method;
+	broadcast message to a set of receivers
+
+2009-09-25  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-connect): new
+	error state they-finalized; handle join-failed error specially
+	* obby/rudel-obby-client.el (rudel-obby-client-state-join-failed):
+	improved comments
+	(rudel-obby-client-state-they-finalized): new state class; used to
+	indicate that the connection was closed by the peer
+	(rudel-obby-client-connection-states): added they-finalized
+	(rudel-obby-connection::rudel-close): switch state machine to
+	they-finalized
+	(rudel-obby-connection::rudel-subscribe-to): new error state
+	they-finalized
+
+	* rudel.el (rudel-client-session::connection): allow nil value
+	(rudel-client-session::rudel-end): only try to disconnect the
+	connection if it is non-nil; ignore errors during disconnect
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-encryption-start::rudel-obby/net6_encryption_begin):
+	do not require rudel-tls; do not try to start TLS encryption if
+	the connection does not support it
+	* rudel-tls.el (rudel-tls-make-process): mark process as
+	supporting TLS encryption
+
+	* obby/rudel-obby-state.el (rudel-obby/net6_ping): return nil to
+	prevent erratic behavior of the state machine
+
+	* rudel-interactive.el (rudel-allocate-buffer-clear-existing):
+	added missing whitespace in prompt string
+
+2009-09-24  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-tls.el (rudel-tls-start-tls): changed displayed message
+	(rudel-tls-wait-init): ignore all lines until "- Simple Client
+	Mode.*" is received; then switch back old filter
+	(rudel-tls-wait-handshake): ignore all lines until "-
+	Compression.*" is received; then switch to established filter
+	(rudel-tls-established): do not ignore any lines other than
+	"- Peer has closed the GNUTLS connection"
+
+	* obby/rudel-obby.el (rudel-ask-connect-info): ask for global and
+	user passwords
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-joining::rudel-enter): transmit global
+	and user passwords when available
+
+	* obby/rudel-obby-errors.el
+	(rudel-obby-error-wrong-global-password): fixed error code
+	(rudel-obby-error-wrong-user-password): fixed error code
+	(rudel-obby-error-protocol-version-mismatch): fixed error code
+	(rudel-obby-error-not-encrypted): fixed error code
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-joining::rudel-obby/net6_login_failed):
+	recognize wrong global/user password error codes
+
+	* obby/rudel-obby-debug.el (whole file): new file; debugging
+	functions for the obby backend
+	* rudel-debug.el (whole file): new file; debugging functions
+
+	* obby/rudel-obby-errors.el
+	(rudel-obby-error-wrong-global-password): new constant; error code
+	for wrong global password
+	(rudel-obby-error-wrong-user-password): new constant; error code
+	for wrong user password
+	(rudel-obby-error-protocol-version-mismatch): new constant; error
+	code for protocol version mismatch
+	(rudel-obby-error-not-encrypted): new constant; error code for not
+	encrypted
+
+	* Project.ede (target rudel): added rudel-transport.el
+	* Makefile (target rudel_LISP): added rudel-transport.el
+	* rudel-transport.el (whole file): new file; interface for
+	transport backends
+
+2009-09-20  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-remote-operation): added byte -> char
+	conversion before the operation is applied to the server-side
+	document; updated comments
+
+	* obby/rudel-obby-server.el (rudel-obby-client::rudel-broadcast):
+	cosmetic changes
+	(rudel-obby-client::rudel-obby/net6_client_login): cosmetic
+	changes; improved comments
+	(rudel-obby-client::rudel-obby/obby_document): changed
+	documentation string; cosmetic changes
+	(rudel-obby-client::rudel-obby/obby_document/record): added a
+	comment
+	(rudel-obby-client::rudel-remote-operation): improved comments
+
+	* obby/rudel-obby-server.el (header): added header comment
+	(rudel-obby-client::rudel-obby/obby_document_create): changed
+	documentation comment
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): changed
+	documentation comment; cosmetic changes
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe):
+	cosmetic changes
+	(rudel-obby-server::initialize-instance): do not run :after; call
+	next method
+	(rudel-obby-server::rudel-broadcast): signal wrong-type-argument
+	instead of just error; cosmetic changes
+	(rudel-obby-server::rudel-check-username-and-color): changed
+	comments
+	(rudel-obby-server::object-print): new method; generate string
+	representation with number of clients
+
+2009-09-19  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins):
+	construct the operation and use	`rudel-remote-operation'
+	(rudel-obby-client::rudel-obby/obby_document/record/del):
+	construct the operation and use `rudel-remote-operation'
+	(rudel-obby-client::rudel-remote-operation): new method; transform
+	and apply an operation object to the server-side document; send
+	operation to all other clients
+	(rudel-obby-server::rudel-broadcast): cosmetic changes
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/del): swapped
+	local and remote revisions in the operation name to be consistent
+	with record/ins; does not affect behavior
+
+2009-09-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (rudel-header-subscriptions--update-from-document):
+	force mode line update
+	(rudel-header-subscriptions--update-from-buffer): force mode line
+	update
+	(rudel-header-subscriptions-minor-mode): force mode line update
+
+	* rudel-mode.el
+	(rudel-mode-line-publish-state-unpublished-string): new
+	customization option; string used to indicate that a buffer is not
+	published
+	(rudel-mode-line-publish-state-published-string): new
+	customization option; string used to indicate that a buffer is
+	published
+	(rudel-mode-line-publish-state--update-string): use
+	`rudel-mode-line-publish-state-unpublished-string' and
+	`rudel-mode-line-publish-state-unpublished-string'
+
+	* rudel.el (rudel-session::end-hook): new slot; stores handlers of
+	the end hook
+	(rudel-session::rudel-end): run end hook
+	(rudel-session::rudel-join-session): install handler on session
+	end hook to set `rudel-current-session' to nil
+	(rudel-session::rudel-end-session): no need to run
+	rudel-session-end-hook or reset `rudel-current-session'
+	* rudel-hooks.el (rudel-hooks--session-start): add handler for the
+	end hook of the session
+	(rudel-hooks--session-end): remove the handler from end hook of
+	the session; run the rudel-session-end hook
+	(rudel-hooks--install-handlers): do install handler for
+	rudel-session-end hook; this is now done by installing the in the
+	session object
+	(rudel-hooks--uninstall-handlers): no need to remove
+	rudel-session-end hook
+
+	* rudel-util.el (rudel-socket-owner::rudel-state-change): cover
+	more states
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_remove):
+	implemented, was stub; untested though
+
+2009-09-10  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_join): check
+	whether we have a user object for the specified user id; modify
+	the existing object if there is one
+
+2009-09-09  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* zeroconf/Makefile (whole file): regenerated
+	* wave/Makefile (whole file): regenerated
+	* Makefile (target all): build target doc
+	(target doc): new target; build documentation
+	(target tags): build target tags in doc directory
+	(target dist): build target dist in doc directory
+
+2009-09-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* telepathy/rudel-telepathy.el (header): fixes
+	(require rudel-backend): required, since we define a backend
+	(require rudel-transport): it is a transport backend
+	(class rudel-telepathy-backend): derived from
+	rudel-transport-backend
+	(rudel-telepathy-backend::initialize-instance): new method; set
+	version slot
+	(autoloading): upgraded to new backend registration style
+
+	* INSTALL (REQUIREMENTS): mention Avahi
+
+2009-09-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (require rudel-util): required for `rudel-hook-object'
+
+	* rudel-util.el (property svn:executable): removed property
+	* rudel-overlay.el (property svn:executable): removed property
+
+	* doc/Project.ede (whole file): new file; project file for the
+	documentation directory
+	* doc/Makefile (whole file): new file; generated Makefile for the
+	documentation directory
+	* doc/card.tex (whole file): new file; reference card for Rudel;
+	source
+	* doc/card.pdf (whole file): new file; reference card for Rudel;
+	PDF
+
+2009-09-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (rudel-read-document): added comment
+	(rudel-allocate-buffer-clear-existing): handle the case in which
+	case a buffer with the desired name exists and is attached to a
+	different document; added some comments
+
+	* rudel-mode.el (header): list all provided modes; bump version
+	(require rudel-hooks): required for global hooks
+	(rudel-mode-line-publish-state-string): new variable; buffer
+	local, holds publish state string for buffer
+	(rudel-mode-line-publish-state--add-indicator-to-mode-line): new
+	function; add publish state indicator to mode line
+	(rudel-mode-line-publish-state--remove-indicator-from-mode-line):
+	new function; remove publish state indicator from mode line
+	(rudel-mode-line-publish-state--update-string): new function;
+	update publish state indicator according to buffer state
+	(rudel-mode-line-publish-state--document-attach): new function;
+	handle document attaching to buffer
+	(rudel-mode-line-publish-state--document-detach): new function;
+	handle document detaching from buffer
+	(rudel-mode-line-publish-state-minor-mode): new minor mode;
+	displays publish state of buffer in mode line
+	(global-rudel-mode-line-publish-state-mode): new minor mode;
+	globalization of `rudel-mode-line-publish-state-minor-mode'
+	(rudel-minor-keymap): menu entries for buffer local and global
+	mode line publish state mode
+
+	* rudel.el (require rudel-hooks): required or hook variables
+	(rudel-session-start-hook): moved to rudel-hooks.el
+	(rudel-session-end-hook): moved to rudel-hooks.el
+	* rudel-hooks.el (whole file): new file; contains hook variables
+	and mapping from object hooks to global hooks
+	* Project.ede (target rudel): added file rudel-hooks.el
+	* Makefile (target rudel_LISP): added file rudel-hooks.el
+
+2009-09-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (rudel-header-subscriptions-minor-mode): improved
+	documentation string
+
+2009-08-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* zeroconf/Makefile (whole file): new file; generated Makefile for
+	the zeroconf subproject
+
+	* wave/rudel-wave.el (whole file): new file; main class of the
+	wave backend
+	* wave/Project.ede (whole file): new file; project file for the
+	wave subproject
+	* wave/Makefile (whole file): new file; generated Makefile for the
+	wave subproject
+	* Project.ede (target autoloads): added wave directory
+	* Makefile (LOADDIRS): added wave and zeroconf directories
+	(VERSION): bumped to 0.2
+	(target all): added wave and zeroconf
+	(tags): descend into zeroconf and wave directories
+	(dist): descend into zeroconf and wave directories
+
+2009-08-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-change-color): run the change hook of the self
+	user
+
+	* rudel-overlay.el (rudel-overlay-set-face-attributes): check the
+	face actually exists
+
+2009-08-27  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (rudel-header-subscriptions-use-images): new
+	variable; controls whether images are used when formatting user
+	names
+	(rudel-header-subscriptions-separator): new variable; separator
+	used when formatting user names
+	(rudel-header-subscriptions--make-format): new function; make a
+	format object for header line
+	(rudel-header-subscriptions--update-from-document): new function;
+	update header line from document
+	(rudel-header-subscriptions--update-from-buffer): new function;
+	update header line from buffer
+	(rudel-header-subscriptions--options-changed): new function;
+	update header line in all buffers that have
+	rudel-header-subscriptions-minor-mode enabled after customization
+	option change
+	(rudel-header-subscriptions--user-change): new function; update
+	header line after a user object change
+	(rudel-header-subscriptions--add-user): new function; watch newly
+	subscribed user and update header line
+	(rudel-header-subscriptions--remove-user): new function; stop
+	watching user and update header line
+	(minor mode rudel-header-subscriptions-minor-mode): new minor
+	mode; display subscribed users in buffer's header line
+	(rudel-header-subscriptions--attach): new function; enable header
+	subscription minor mode when attaching
+	(rudel-header-subscriptions--detach): new function; disable header
+	subscription minor mode when detaching
+	(rudel-header-subscriptions--add-document): new function; monitor
+	attaching/detaching of new document
+	(rudel-header-subscriptions--remove-document): new function; stop
+	monitoring attaching/detaching of new document
+	(rudel-header-subscriptions--session-start): new function; watch
+	documents being added/removed to/from the session
+	(rudel-header-subscriptions--session-end): new function; stop
+	watching documents being added/removed to/from the session
+	(minor mode global-rudel-header-subscriptions-mode): global minor
+	mode that controls `rudel-header-subscriptions-minor-mode' in
+	buffers
+	(advice global-rudel-header-subscriptions-mode): controls
+	adding/removing watches for added/removed documents when the
+	global mode is enabled/disabled
+	(rudel-minor-keymap): Added entries for
+	`rudel-header-subscriptions-minor-mode' and
+	`global-rudel-header-subscriptions-mode'
+
+2009-08-26  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* . (property svn:ignore): added patterns
+	* jupiter (property svn:ignore): added patterns
+	* obby (property svn:ignore): added patterns
+
+	* rudel.el (rudel-session::add-user-hook): new slot; add user hook
+	function list
+	(rudel-session::remove-user-hook): new slot; remove user hook
+	function list
+	(rudel-session::add-document-hook): updated documentation string
+	(rudel-session::remove-document-hook): updated documentation
+	string
+	(rudel-session::rudel-add-user): run add user hook
+	(rudel-session::rudel-remove-user): run remove user hook
+
+	* rudel.el (rudel-session-start-hook): new variable; session start
+	hook function list
+	(rudel-session-end-hook): new variable; session end hook function
+	list
+	(rudel-join-session): run session start hook
+	(rudel-end-session): run session end hook
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document_create): call
+	`generate-new-buffer-name' on complete buffer name; not just name
+	part
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): send
+	number of bytes instead of number of characters
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-document-synching::remaining-bytes):
+	fixed initarg num-bytes -> remaining-bytes
+
+	* rudel.el (rudel-session::add-document-hook): new slot; run when
+	a document gets added to the session
+	(rudel-session::remove-document-hook): new slot; run when a
+	document gets removed from the session
+	(rudel-session::rudel-add-document): run add document hook
+	(rudel-session::rudel-remove-document): run remove document hook
+	(rudel-document::unsubscribe-hook): fixed initarg subscribe-hook
+	-> unsubscribe-hook
+
+2009-08-25  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* www/index.html (Download): link to http://bazaar-vcs.org;
+	improved wording
+
+	* www/index.html (Download): changed link to source; add browse
+	source link for bzr
+
+	* INSTALL (REQUIREMENTS): precise CEDET release version
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_user_colour): run change hook
+	after setting slot
+	(rudel-obby-server::rudel-remove-client): run change hook after
+	setting slot
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_part): run
+	change hook after setting slots
+	(rudel-obby-client-state-idle::rudel-obby/obby_user_colour): run
+	change hook after setting slot
+	* rudel.el (class rudel-user): derive from `rudel-hook-object'
+	(rudel-user::change-hook): new slot; stores change hook functions
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_user_colour): cosmetic changes
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): use
+	`rudel-add-user'
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): use
+	`rudel-remove-user'
+	(rudel-obby-server::rudel-check-username-and-color): whitespace
+	fixes
+
+2009-08-23  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document::attach-hook): new slot; attach hook
+	function list
+	(rudel-document::detach-hook): new slot; detach hook function list
+	(rudel-document::rudel-attach-to-buffer): run hook `attach-hook'
+	(rudel-document::rudel-detach-from-buffer): run hook `detach-hook'
+	(rudel-document::rudel-add-user): improved documentation string
+	(rudel-document::rudel-remove-user): improved documentation string
+
+	* obby/rudel-obby.el
+	(rudel-obby-user::eieio-speedbar-object-buttonname): fixed typo
+
+2009-08-21  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/subscribe):
+	call `rudel-add-user'
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/unsubscribe):
+	call `rudel-remove-user'
+	* rudel.el (class rudel-document): mixin rudel-hook-object
+	(rudel-document::subscribe-hook): new slot; subscribe-hook
+	function list
+	(rudel-document::unsubscribe-hook): new slot; unsubscribe-hook
+	function list
+	(rudel-document::rudel-add-user): new method; add user to list of
+	subscribed users and run subscribe-hook
+	(rudel-document::rudel-remove-user): new method; remove user from
+	list of subscribed users and run unsubscribe-hook
+
+	* obby/rudel-obby.el (header): cosmetic changes
+	(include rudel-icons): `rudel-display-string' uses icons
+	(rudel-obby-user::eieio-speedbar-object-buttonname): use
+	`rudel-display-string'
+	(rudel-obby-user::rudel-display-string): new method; textual
+	representation of user object
+	(rudel-obby-parse-message): cosmetic changes
+	* rudel.el (include rudel-icons): `rudel-display-string' uses
+	icons
+	(rudel-user::rudel-display-string): new method; textual
+	representation of user object
+
+	* rudel-util.el (rudel-hook-object): new class; abstract mixin for
+	classes that offer hooks
+	(rudel-hook-object::object-add-hook): new method; add function to
+	hook list
+	(rudel-hook-object::object-remove-hook): new method; remove
+	function from hook list
+	(rudel-hook-object::object-run-hook-with-args): new method; run
+	hook functions
+
+2009-08-20  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* icons/plaintext.svg (new file): plaintext icon
+	* icons/person.svg (new file): person icon
+	* icons/encrypted.svg (new file): encrypted icon
+	* icons/document.svg (new file): document icon
+	* icons/disconnected.svg (new file): disconnected icon
+	* icons/connected.svg (new file): connected icon
+	* rudel-icons.el (new file): loading icons
+	* Project.ede (target rudel): added rudel-icons.el
+
+2009-08-19  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-join-session): renamed local variable backend to
+	session-initiation-backend
+
+2009-08-17  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-state.el (rudel-obby-state::rudel-accept): fixed
+	format of warning message
+
+	* rudel-state-machine.el (require working): needed by
+	`rudel-state-wait'
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_user_colour): set
+	face attributes
+	* rudel.el (rudel-change-color): set face attributes
+	* rudel-overlay.el (rudel-overlay-make-face): use
+	`rudel-overlay-set-face-attributes'
+	(rudel-overlay-set-face-attributes): new function; set face
+	attributes
+
+	* rudel-overlay.el (rudel-overlay-author-set-properties): call
+	`rudel-overlay-make-face-symbol'
+	(rudel-overlay-make-face-symbol): new function; return face symbol
+
+2009-08-16  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-overlay.el (rudel-overlay-author-display): option that
+	controls display of author overlays
+	(rudel-make-author-overlay): call
+	`rudel-overlay-author-set-properties' to set the overlay
+	properties
+	(rudel-overlay-author-set-properties): new function; set overlay
+	properties; respects rudel-overlay-author-display
+	(rudel-overlay-author-update): new function; update overlay
+	properties based on associated user object
+	(rudel-overlay-options-changed): new function; call
+	`rudel-overlay-author-update' on all Rudel overlays in all buffers
+	* rudel-mode.el (header): cosmetic changes
+	(rudel-minor-menu): added menu entry to toggle display of author
+	overlays
+
+	* rudel-overlay.el (rudel-make-author-overlay): use `intern'
+	instead of `make-symbol' when allocating the face name; this way,
+	faces can actually be created lazily
+	(rudel-overlay-make-face): call `make-face' for the new face
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-document-synching::object-print): fixed
+	slot name remaining-bytes
+
+	* rudel.el (rudel-host-session): the backend object is the cdr of
+	the result of `rudel-backend-choose'
+
+2009-08-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* telepathy/rudel-telepathy.el (header): added file comment
+	* obby/rudel-obby-state.el (header): fixed email address
+	(whole file): whitespace fixes
+	* jupiter/jupiter.el (header): cosmetic changes
+	(whole file): whitespace fixes
+	* rudel-util.el (header): cosmetic changes
+	* rudel-mode.el (header): cosmetic changes
+	* rudel-errors.el (header): fixed type
+	(whole file): whitespace fixes
+
+	* obby/rudel-obby.el (rudel-ask-connect-info): added optional
+	argument info; do not ask for things that are already specified in
+	info
+	(autoload): register obby service with the Zeroconf backend
+	* zeroconf/rudel-zeroconf.el (new file): Zeroconf session
+	initiation for Rudel
+	* zeroconf/Project.ede (new file): subproject zeroconf
+	* rudel.el (rudel-join-session): call `rudel-ask-info' to augment
+	connect info
+	* Project.ede (target autoloads): added directory zeroconf
+	* INSTALL (INSTALLING): mention zeroconf subdirectory
+	(COMPILING): mention zeroconf target
+
+	* rudel-backend.el (rudel-backend-factory::rudel-get-backend):
+	return backend as a cons
+	(rudel-backend-get): new function; convenience function for
+	getting backends
+
+	* obby/rudel-obby.el (header): extended commentary and history
+	(rudel-obby-version): bumped to 0.2
+	(rudel-obby-backend::initialize-instance): set :version slot in
+	constructor instead of using obsolete lambda expression in
+	initform
+
+2009-08-14  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* Project.ede (project rudel): bumped version to 0.2; added
+	mailing list and path to web files
+
+	* rudel-backend.el (rudel-backend-factory): do not initialize
+	backends with lambda expression
+	(rudel-backend-factory::initialize-instance): new method;
+	initialize backends
+	(rudel-backend-cons-p): use `object-p' instead of `eieio-object-p'
+	(rudel-backend-dump): changed format slightly
+
+2009-08-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (include rudel-session-initiation): required for
+	`rudel-join-session'
+	(rudel-join-session): mostly rewritten; moved user interaction to
+	`interactive' form
+	* rudel-session-initiation.el (new file): session initiation
+	backend interface and high-level programming interface
+	* Project.ede (target rudel): added rudel-session-initiation.el
+	* Makefile (rudel_LISP): added rudel-session-initiation.el
+
+	* rudel-interactive.el (rudel-read-session): discriminate sessions
+	vs. session generating objects using `rudel-backend-cons-p'
+
+	* rudel-backend.el (rudel-backend-cons-p): new function; checks
+	whether a cons consists of a backend name and object
+
+2009-08-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (rudel-read-session): new function; read
+	session by name and return it
+
+	* rudel-interactive.el (rudel-read-backend): argument backends is
+	no longer optional; always return a cons of backend name and
+	object; updated documentation string
+	(whole file): whitespace fixes
+	* rudel-backend.el (rudel-backend-choose): always return a cons of
+	backend name and object; updated documentation string
+
+2009-08-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (file header): added project URL
+	(whole file): improved some comments
+
+2009-08-10  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (include eieio-base): needed for eieio-named
+
+2009-08-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-state-machine.el (header section commentary): updated
+	(rudel-state-machine::initialize-instance): use
+	`rudel--switch-to-return-value' to allow immediate switch to
+	another state
+	(rudel-state-machine::rudel-switch): use
+	`rudel--switch-to-return-value' to switch to successor state
+	(rudel-state-machine::rudel--switch-to-return-value): new function
+	switch to successor state for different kinds of specifications of
+	the successor state
+
+2009-08-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (require rudel-backend): now necessary
+	(require rudel-protocol): now necessary
+	(class rudel-obby-backend): now derived from `rudel-backend';
+	autoloaded
+	(autoloading): use `rudel-add-backend'
+	* rudel.el (require rudel-backend): backends have their own file
+	(class rudel-backend): moved to rudel-backend.el
+	(rudel-load-backends): moved to rudel-backend.el
+	(rudel-suitable-backends): moved to rudel-backend.el
+	(rudel-choose-backend): moved to rudel-backend.el
+	(rudel-join-session): use `rudel-backend-choose'
+	(rudel-host-session): use `rudel-backend-choose'
+
+	* rudel-protocol.el (new file): interface for Rudel protocol
+	backends
+	* Project.ede (target rudel): added rudel-protocol.el
+	* Makefile (rudel_LISP): added rudel-protocol.el
+
+	* rudel-backend.el (rudel-backend-factory::rudel-get-backend):
+	improved documentation string
+	(rudel-backend-factory::rudel-suitable-backends): improved
+	documentation string
+	(rudel-backend-suitable-backends): improved documentation string
+	(rudel-backend-choose): When only one backend matches, do not
+	check interactivity using `interactive-p', that does not work;
+	call `sit-for' correctly
+
+2009-08-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/Makefile (whole file): regenerated; reflects CEDET
+	changes
+	* rudel-backend.el (new file): generic backend management, query
+	and loading functions
+	* Project.ede (target rudel): added rudel-backend.el to sources
+	* Makefile (rudel_LISP): added rudel-backend.el
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): use slot
+	:object-name instead of calling object-name-string
+	(rudel-obby-server::rudel-add-context): use slot :object-name
+	instead of calling object-name-string
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/rename):
+	use slot :object-name instead of calling object-name-string
+	(rudel-obby-connection::rudel-add-context): use slot :object-name
+	instead of calling object-name-string
+	(rudel-obby-connection::rudel-publish): use slot :object-name
+	instead of calling object-name-string
+	* rudel.el (class rudel-user): added base class eieio-named for
+	virtual slot :object-name; made abstract
+	(class rudel-document): added base class eieio-named for virtual
+	slot :object-name
+	* rudel-overlay.el (rudel-make-author-overlay): use slot
+	:object-name instead of calling object-name-string
+
+	* rudel-state-machine.el
+	(rudel-state-machine::initialize-instance): use &rest slots
+	instead of just slots
+
+2009-07-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document::rudel-detach-from-buffer): call
+	`rudel-overlays-remove-all'; remove `rudel-unpublish-buffer' hook
+	early
+	* rudel-overlay.el (rudel-overlays-remove-all): new function;
+	remove all overlays from the current buffer
+	(whole file): cosmetic changes; typo fixes; whitespace fixes
+
+	* obby/rudel-obby.el (rudel-obby-document::rudel-unique-name):
+	Check `next-method-p' before calling the next method
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::initialize-instance): Check
+	`next-method-p' before calling the next method
+	(rudel-obby-connection::rudel-register-state): Check
+	`next-method-p' before calling the next method
+	(rudel-obby-connection::rudel-disconnect): Check
+	`next-method-p' before calling the next method
+	* rudel.el (rudel-client-session::rudel-end): Check
+	`next-method-p' before calling the next method
+
+2009-07-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-connect): only
+	start the network process after everything is ready; wait for the
+	connection state machine to reach a success or error state
+	(rudel-obby-backend::rudel-host): cosmetic changes
+	(class rudel-obby-user): cosmetic changes
+	* rudel.el (rudel-join-session): reversed order of creation for
+	session and connection; do not catch errors to give error messages
+	a chance
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	cosmetic changes
+	(whole file): whitespace fixes
+
+	* rudel.el (rudel-session::rudel-find-user): added documentation
+	string; cosmetic changes
+	(rudel-session::rudel-find-document): added documentation string;
+	cosmetic changes
+	(whole file): whitespace fixes
+
+2009-07-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-speedbar.el (eieio-speedbar-object-buttonname): use
+	`rudel-unique-name' instead of `object-name-string'
+
+	* obby/rudel-obby-state.el (rudel-enter): return nil
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-joining::rudel-enter): return nil
+	(rudel-obby-client-state-join-failed::rudel-enter): return nil
+	(rudel-obby-client-state-session-synching::rudel-enter): return
+	nil
+	(rudel-obby-client-state-session-synching::object-print): new
+	method; add number of remaining items to string representation
+	(rudel-obby-client-state-subscribing::rudel-enter): nil
+	(rudel-obby-client-state-document-synching::rudel-enter): nil
+	(rudel-obby-client-state-document-synching::object-print): new
+	method; add number of remaining bytes to string representation
+
+2009-07-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-util.el (with-parsed-arguments): added debug
+	declaration
+	(whole file): whitespace fixes
+	* rudel-util.el (rudel-assemble-line-fragments): added debug
+	declaration
+	(rudel-loop-lines): added debug declaration
+	(rudel-loop-chunks): fixed documentation string; added debug
+	declaration
+
+	* rudel-state-machine.el (rudel-no-start-state): new error symbol
+	(rudel-state-machine::initialize-instance): try hard to find a
+	suitable start sate; call `rudel-switch' instead of just
+	`rudel-enter'
+	(rudel-state-machine::rudel-switch): always return the new current
+	state; accept successor state from `rudel-enter'
+	(rudel-state-machine::object-print): new method; add current state
+	of state machine to string representation
+	(rudel-state-machine::rudel-state-wait): whitespace fixes
+
+2009-07-07  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (class rudel-obby-backend): better
+	documentation string
+	(rudel-obby-backend::rudel-ask-connect-info): added documentation
+	string
+	(rudel-obby-backend::rudel-connect): added documentation string
+	(rudel-obby-backend::rudel-ask-host-info): added documentation
+	string
+	(rudel-obby-backend::rudel-host): added documentation string
+	(rudel-obby-backend::rudel-make-document): added documentation
+	string
+	(rudel-obby-send): cosmetic changes
+	(whole file): whitespace fixes
+
+2009-07-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (REQUIREMENTS): added Emacs itself and GNUTls
+
+	* rudel-tls.el (rudel-tls-start-tls): added a message
+	(rudel-tls-wait-handshake): switch to filter
+	`rudel-tls-established' instead of restoring the original filter
+	(rudel-tls-established): new function; filters GNUTls messages in
+	encrypted connections
+	(whole file): whitespace fixes
+
+2009-07-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* README (INTRODUCTION): extended a bit
+	(JOINING A SESSION): added prompt/input example and an explanation
+	of encryption issues in the obby backend
+	(KNOWN BUGS): new section; no known bugs yet, though
+
+2009-06-17  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el (require rudel-state-machine): the
+	connection now is a state machine
+	(require rudel-obby-errors): used when analyzing login failures
+	(require rudel-obby-state): useful base classes for states
+	(rudel-obby-client-state-new): new class; initial state of new
+	connections
+	(rudel-obby-client-state-encryption-negotiate): new class;
+	first encryption state
+	(rudel-obby-client-state-encryption-start): new class; second
+	encryption state
+	(rudel-obby-client-state-joining): new class
+	(rudel-obby-client-state-join-failed): new class; entered after
+	failed login attempt
+	(rudel-obby-client-state idle): new class; default state of
+	established connections
+	(rudel-obby-client-state-session-synching): new class;
+	synchronizing session state to client
+	(rudel-obby-client-state-subscribing): new class; first state of
+	document subscription
+	(rudel-obby-client-state-document-synching): new class;
+	synchronizing document state to client
+	(rudel-obby-client-connection-states): new variable; alist of
+	name symbols and associated state classes
+	(rudel-obby-connection::initialize-instance): register states
+	(rudel-obby-connection::rudel-register-state): new method; set
+	connection slot of state to its connection
+	(rudel-obby-connection::rudel-add-context): cleanup
+	(rudel-obby-connection::rudel-message): dispatch message using
+	`rudel-accept'
+	(rudel-obby-connection::rudel-subscribe-to): initiate subscription
+	by switching to state 'subscribing'
+
+	* obby/rudel-obby-state.el (rudel-obby-document-handler): new
+	class; mixin class that provides handling of obby 'document'
+	messages
+
+	* rudel-state-machine.el
+	(rudel-state-machine::initialize-instance): find start state in
+	slots and switch into it
+	(while-file): whitespace fixes
+
+2009-06-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* www/index.html (section download): fixed link to download area
+	(whole file): whitespace cleanup
+
+	* obby/rudel-obby-state.el (new file): finite state machine states
+	for the rudel backend
+	* obby/Project.ede (target rudel/obby): added rudel-obby-state.el
+	* obby/Makefile (target obby_LISP): added rudel-obby-state.el
+
+	* rudel-util.el (require rudel-errors): required for dispatch
+	errors
+	(symbol rudel-dispatch-error): new condition symbol for dispatch
+	errors
+	(rudel-dispatch): new function; dispatch to method based on method
+	name
+	(whole file): whitespace fixes
+
+2009-06-14  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (global-rudel-minor-mode): removed; the variable
+	is created by `define-minor-mode'
+	(minor-mode-alist): managed by `define-minor-mode'
+
+	* rudel-mode.el (require easy-mmode): used to define global rudel
+	minor mode
+	(rudel-minor-keymap): cosmetic changes
+	(global-rudel-minor-mode): use `define-minor-mode' to define the
+	mode
+	(whole file): whitespace cleanup
+
+	* rudel-telepathy.el (whole file): moved to
+	telepathy/rudel-telepathy.el
+	* telepathy/rudel-telepathy.el (whole file): moved from
+	rudel-telepathy.el
+
+	* obby/rudel-obby-server.el (whole file): whitespace cleanup
+	* obby/rudel-obby-client.el (require rudel-obby): removed;
+	unnecessary
+	(rudel-obby-connection::initialize-instance): use &rest for `slots'
+	argument; cosmetic changes
+	(rudel-obby-connection::rudel-change-color-): use own `rudel-send'
+	method instead of the socket's
+	(rudel-obby-connection::rudel-subscribe-to): cosmetic changes
+	(rudel-obby-connection::rudel-unsubscribe-from): cosmetic changes
+	(rudel-obby-connection::rudel-local-operation): cosmetic changes
+	(whole file): whitespace cleanup
+
+2009-06-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-errors.el (new file): error data
+	* rudel-state-machine.el (new file): a simple finite state machine
+	implementation
+	* Project.ede (target rudel): added rudel-errors.el and
+	rudel-state-machine.el
+	* Makefile (target rudel_LISP): added rudel-errors.el and
+	rudel-state-machine.el
+
+2009-06-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el (require rudel-obby-errors): now
+	required
+	(rudel-obby-client::rudel-obby/net6_client_login): check username
+	and color before adding the client
+	(rudel-obby-server::rudel-check-username-and-color): new method;
+	make sure username and color are valid and there are no duplicates
+	* obby/rudel-obby-errors.el (new file): error data for the obby
+	backend
+	* obby/Project.ede (rudel/obby): added rudel-obby-errors.el
+	* obby/Makefile (obby_LISP): added rudel-obby-errors.el
+
+	* rudel.el (rudel-user::rudel-color): added accessor `rudel-color'
+
+	* obby/rudel-obby-server.el (require cl): required
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): send suffices
+	of synchronized documents
+
+2009-06-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document_create): send
+	document/rename message to client when the document suffix changes
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_user_colour): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document_create): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/record): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/record/ins): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/record/del): use
+	`with-parsed-arguments'
+
+	* obby/rudel-obby-server.el (header): fixed version
+
+2009-06-10  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-operation): fixed wording in
+	comment
+
+	* www/images/development.png (whole file): changed size 48x48 ->
+	64x64
+	* www/images/development.svg (whole file): changed size 48x48 ->
+	64x64
+	* www/images/download.png (whole file): changed size 48x48 ->
+	64x64
+	* www/images/download.svg (whole file): changed size 48x48 ->
+	64x64
+	* www/images/info.png (whole file): changed size 48x48 -> 64x64
+	* www/images/info.svg (whole file): changed size 48x48 -> 64x64
+
+	* index.html (section introduction): wording fixes; link to Gobby
+	(whole file): removed external link class for sourceforge links
+	(section download): added link to INSTALL file in svn code browser
+	(section footer): fixed copyright
+
+	* compatibility.html (section footer): fixed copyright
+
+2009-06-09  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (section REQUIREMENTS): removed ERT which is not
+	currently used
+	(section INSTALL): some wording and file name fixes
+	(section COMPILING): precise make command
+
+	* www/index.html (section development): fixed mailing list and
+	issue tracker links; removed email address
+
+	* www/compatibility.html (head): fixed charset
+	(section semantic): added missing <p> tag
+
+	* www/compatibility.html (new file): compatibility information
+	* www/index.html (new file): start page
+	* www/style.css (new file): stylesheet
+	* www/images/development.png (new file): development icon
+	* www/images/development.svg (new file): development icon
+	* www/images/download.png (new file): download icon
+	* www/images/download.svg (new file): download icon
+	* www/images/email-link.png (new file): icon for email links
+	* www/images/external-link.png (new file): icon for external links
+	* www/images/info.png (new file): info icon
+	* www/images/info.svg (new file): info icon
+	* www/images/screenshot.png (new file): screenshot for the start
+	page
+
+	* obby/rudel-obby-serverl.el
+	(rudel-obby-client::rudel-obby/obby_document_create): find unique
+	suffix for the new document; send suffix to clients
+
+	* obby/rudel-obby.el (header): fixed license text
+	* obby/rudel-obby-util.el (header): fixed license text
+	* obby/rudel-obby-server.el (header): fixed license text
+	* obby/rudel-obby-client.el (header): fixed license text
+	* jupiter/jupiter.el (header): fixed license text
+	* jupiter/jupiter-operation.el (header): fixed license text
+	* jupiter/jupiter-nop.el (header): fixed license text
+	* jupiter/jupiter-insert.el (header): fixed license text
+	* jupiter/jupiter-delete.el (header): fixed license text
+	* jupiter/jupiter-compound.el (header): fixed license text
+	* rudel.el (header): fixed license text
+	* rudel-util.el (header): fixed license text
+	* rudel-tls.el (header): fixed license text
+	* rudel-telepathy.e (header): fixed license text
+	* rudel-speedbar.el (header): fixed license text
+	* rudel-overlay.el (header): fixed license text
+	* rudel-operators.el (header): fixed license text
+	* rudel-operations.el (header): fixed license text
+	* rudel-mode.el (header): fixed license text
+	* rudel-interactive.el (header): fixed license text
+	* rudel-compat.el (header): fixed license text
+
+	* obby/rudel-obby-util.el (require cl): now required
+	(generic rudel-obby-char->byte): new generic; char positions ->
+	byte positions
+	(jupiter-insert::rudel-obby-char->byte): new method; char
+	positions -> byte positions
+	(jupiter-delete::rudel-obby-char->byte): new method; char
+	positions -> byte positions
+	(jupiter-compound::rudel-obby-char->byte): new method; char
+	positions -> byte positions
+	(jupiter-nop::rudel-obby-char->byte): new method; char positions
+	-> byte positions
+	(generic rudel-obby-byte->char): new generic; byte positions ->
+	char positions
+	(jupiter-insert::rudel-obby-byte->char): new method; byte
+	positions -> char positions
+	(jupiter-delete::rudel-obby-byte->char): new method; byte
+	positions -> char positions
+	(jupiter-compound::rudel-obby-byte->char): new method; byte
+	positions -> char positions
+	(jupiter-nop::rudel-obby-byte->char): new method; byte positions
+	-> char positions
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-operation): call
+	`rudel-obby-char->byte' before processing
+	(rudel-obby-connection::rudel-remote-operation): call
+	`rudel-obby-byte->char' before processing
+	* rudel.el (rudel-buffer-change-workaround-data): new variable;
+	holds change data for later use
+	(rudel-document::rudel-attach-to-buffer): add
+	`rudel-buffer-change-workaround' to 'before-change-functions'
+	(rudel-document::rudel-detach-from-buffer): remove
+	`rudel-buffer-change-workaround' from 'before-change-functions'
+	(rudel-buffer-change-workaround): new function; stores change data
+	for later use
+
+2009-06-07  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_join): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/net6_client_part): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_welcome): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_sync_init): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_sync_usertable_user): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_user_colour): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_sync_doclist_document):
+	use `with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document_create): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document_remove): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document): use
+	`with-parsed-arguments'; cleanup
+	(rudel-obby-connection::rudel-obby/obby_document/rename): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/subscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/unsubscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/record): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/record/del): use
+	`with-parsed-arguments'
+
+2009-06-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_part): use `eql',
+	not `=' when calling `rudel-find-user' since the client id can be
+	nil
+
+	* obby/rudel-obby-util.el (require jupiter): silence byte compiler
+
+	* obby/rudel-obby-util.el (rudel-obby-dispatch): moved inside file
+	(with-parsed-arguments): new macro; executed forms with variables
+	bound to parsed arguments
+
+2009-06-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (require rudel-interactive): interactive functions use
+	`rudel-read-backend' and `rudel-read-document'
+
+	* rudel.el (rudel-buffer-document): mark as permanent local
+	variable to prevent deletion in the event of a major-mode change
+	(rudel-document::rudel-attach-to-buffer): add (buffer-locally)
+	`rudel-handle-major-mode-change' to 'change-major-mode-hook' such
+	that it can repair damage caused by major-mode changes
+	(rudel-document::rudel-detach-from-buffer): remove
+	`rudel-handle-major-mode-change' from 'change-major-mode-hook'
+	(rudel-mode-changed-buffers) new variable; temporarily stores
+	buffers that underwent major-mode changes
+	(rudel-handle-major-mode-change): new function; schedules buffers
+	for repair after major-mode changes
+	(rudel-after-major-mode-change): new function; repairs buffer
+	objects after major-mode changes
+
+2009-06-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-buffer-has-document-p): use `buffer-local-value'
+	(rudel-buffer-document): use `buffer-local-value'
+	(rudel-set-buffer-document): added documentation string
+
+2009-06-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-handle-buffer-change): There are three cases
+	now: insert, delete and arbitrary changes; arbitrary changes
+	generate a delete and insert operation
+
+	* rudel-mode.el (rudel-minor-keymap): added some comments
+	(global-rudel-minor-mode): extended documentation string; cleaned
+	up code; added comments
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_part): fixed typo
+	in variable name client-id-numeric
+
+2009-05-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-util.el (header): Fixed version (1.0 -> 0.1)
+
+	* obby/rudel-obby-client.el (header): Fixed version (1.0 -> 0.1)
+	(rudel-obby-connection::rudel-obby/obby_document/record/split):
+	introduced temporary variable
+
+2009-??-??  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-buffer-document): removed; replaced by
+	rudel-buffer-documents hash-table
+	(rudel-buffer-documents): new variable; a hash-table, which
+	associates documents to buffers
+	(rudel-buffer-has-document-p):
+	(rudel-buffer-document):
+	(rudel-set-buffer-document):
+
+2009-03-16  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_part): do not crash
+	if the client id cannot be found
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-make-document):
+	specify value 1 for slot suffix
+	(rudel-obby-document::suffix): new slot; contains the suffix
+	number of the document
+	(rudel-obby-document::rudel-unique-name): new method; return
+	unique name based on document name and suffix
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/obby_sync_doclist_document): do
+	not ignore the suffix when creating the document object
+	(rudel-obby-connection::rudel-obby/obby_document_create): do not
+	ignore the suffix when creating the document object
+	(rudel-obby-connection::rudel-obby/obby_document/rename): change
+	document name and suffix as requested
+	* rudel.el (rudel-document::rudel-unique-name): new method;
+	returns a unique name for the document
+	(rudel-document::rudel-suggested-buffer-name): new method; returns
+	a suggested name for the buffer attached to the document
+	(rudel-subscribe): use `rudel-suggested-buffer-name' instead of
+	the object name
+	* rudel-interactive.el (rudel-read-document): use the unique names
+	of the documents instead of the object names
+
+2009-02-27  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): add hook to
+	detach document from the buffer when the buffer is killed
+	(rudel-document::rudel-detach-from-buffer): remove unpublish
+	function kill buffer hook
+
+2009-02-23  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document): minor cleanup
+	(rudel-document::rudel-attach-to-buffer): stylistic changes
+	(rudel-document::rudel-detach-from-buffer): fixed argument order in
+	call to `rudel-set-buffer-document'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-server::rudel-remove-client): Make sure there is a
+	user object before setting the status to offline
+
+	* obby/rudel-obby-client.el (rudel-obby/net6_encryption_failed):
+	only fail if encryption has been requested in the first
+	place. otherwise, just carry on
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): use
+	`rudel-set-buffer-document'
+	(rudel-document::rudel-detach-from-buffer): use
+	`rudel-set-buffer-document'
+	(rudel-buffer-has-document-p): new function; test whether a buffer
+	has an associated document object
+	(rudel-buffer-document): new function; returns associated document
+	object of a buffer
+	(rudel-set-buffer-document): new functions; sets associated
+	document object of a buffer
+	(rudel-handle-buffer-change): use `rudel-buffer-has-document-p'
+	(rudel-publish-buffer): use `rudel-buffer-has-document-p'
+	(rudel-unpublish-buffer): use `rudel-buffer-has-document-p' and
+	`rudel-buffer-document'
+	* rudel-mode.el (rudel-minor-keymap): use
+	`rudel-buffer-has-document-p'
+
+	* obby/rudel-obby-client.el (rudel-obby/obby_document/rename):
+	new method; dummy implementation
+
+	* obby/rudel-obby-client.el (rudel-obby/net6_client_join):
+	stylistic change
+
+2009-02-21  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-util.el (generic rudel-operation->message): new
+	generic function; serializes an operation
+	(jupiter-insert::rudel-operation->message): new method
+	(jupiter-delete::rudel-operation->message): new method
+	(jupiter-compound::rudel-operation->message): new method
+	(jupiter-nop::rudel-operation->message): new method
+	(rudel-message->operation): new function; deserializes an
+	operation from a received message
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-insert): do not construct
+	message string; use `rudel-operation->message'
+	(rudel-obby-connection::rudel-local-delete): do not construct
+	message string; use `rudel-operation->message'
+	(rudel-obby-connection::rudel-local-operation): new method;
+	handles operation objects that represent local operations
+	(rudel-obby-connection::rudel-remote-operation): new method;
+	handles operation objects that represent remote operations
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins):
+	construct operation name correctly; do not call jupiter context to
+	transform operation
+	(rudel-obby-connection::rudel-obby/obby_document/record/del):
+	construct operation name correctly; do not call jupiter context to
+	transform operation
+	(rudel-obby-connection::rudel-obby/obby_document/record/split):
+	new method; handles split operation messages
+	(rudel-obby-connection::rudel-obby/obby_document/record/noop): new
+	method; handles nop messages
+
+2009-02-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-connect-info):
+	ask whether to encrypt the connection
+	(rudel-obby-backend::rudel-connect): create connection object
+	capable of StartTLS encryption when encryption was requested
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_encryption): do not fail
+	when the server requests encryption
+	(rudel-obby-connection::rudel-obby/net6_encryption_begin): start
+	TLS encryption for the connection
+	(rudel-obby-connection::rudel-obby/net6_encryption_failed): new
+	method; stub
+	* rudel-tls.el (new file): StartTLS encryption for Rudel
+	* Project.ede ("rudel"): added rudel-tls.el
+	* Makefile (rudel_LISP): added rudel-tls.el
+
+2009-02-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-compat.el (header): fixed email address, keywords, legal
+	notice and file commentary
+
+2009-02-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-compat): require rudel-compat for
+	`read-color'
+	* rudel.el (rudel-compat): require rudel-compat for `read-color'
+	* rudel-interactive.el (rudel-compat): require rudel-compat for
+	`read-color'
+	* rudel-compat.el (new file): compatibility code
+	* Project.ede (rudel): added rudel-compat.el
+	* Makefile (rudel_LISP): regenerated: added rudel-compat.el
+
+2009-02-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (require rudel)
+	* obby/rudel-obby-util.el (require rudel)
+	* obby/rudel-obby-client.el (require rudel-obby): make compilation
+	succeed
+
+	* rudel.el (include eieio-speedbar): I need it for now; I should
+	get rid of it later
+
+	* INSTALL (REQUIREMENTS): added note that CVS version of cedet is
+	required
+	(INSTALLING): added subdirectories jupiter and obby in load path
+	listing; fixed name of autoload file
+
+2009-02-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-connect-info)
+	(rudel-obby-backend::rudel-host, rudel-obby-replace-in-string)
+	* obby/rudel-obby-util.el (rudel-obby-dispatch)
+	* obby/rudel-obby-server.el (rudel-obby-client::rudel-obby/obby_document)
+	(rudel-obby-server::rudel-broadcast, rudel-obby-server::rudel-make-user)
+	* obby/rudel-obby-client.el (rudel-obby-connection::rudel-obby/net6_client_join)
+	(rudel-obby-connection::rudel-obby/obby_document)
+	* jupiter/jupiter-operation.el (jupiter-operation)
+	* rudel.el (rudel-backend, rudel-session, rudel-server-session)
+	(rudel-connection, rudel-document)
+	(rudel-document::rudel-attach-to-buffer)
+	(rudel-document::rudel-detach-from-buffer)
+	(rudel-document::rudel-insert, rudel-document::rudel-delete)
+	(rudel-change-color)
+	* rudel-util.el (rudel-assemble-line-fragments, rudel-loop-lines)
+	* rudel-overlay.el (rudel-make-author-overlay)
+	* rudel-interactive.el (rudel-read-backend, rudel-read-user-color)
+	(rudel-read-user, rudel-read-document): replaced 't by t
+
+	* rudel-operators.el (rudel-overlay-operators::rudel-insert):
+	Fixed computation of insertion offset when appending to the end of
+	the buffer string
+
+	* rudel.el (rudel-document::rudel-chunks): fixed invalid access to
+	last chunk for empty buffer
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): fixed
+	incorrect slot reference
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): minor
+	rearrangement of expressions
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): minor
+	rearrangement of expressions
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins): added
+	documentation string
+	(rudel-obby-client::rudel-obby/obby_document/record/del): added
+	documentation string
+	(rudel-obby-server): cosmetic change
+
+	* jupiter/jupiter.el (jupiter-context::jupiter-remote-operation):
+	improved documentation string; cosmetic changes
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	improved some comments
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): renamed
+	some variables; added documentation string
+	(rudel-document::rudel-insert): improved documentation string
+	(rudel-document::rudel-chunks): do not create chunks when buffer
+	string is empty; improved comments
+	(rudel-choose-backend): compare number using `=' not `eq'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins): use
+	`rudel-remote-operation' instead of `rudel-remote-insert'
+	(rudel-obby-client::rudel-obby/obby_document/record/del): use
+	`rudel-remote-operation' instead of `rudel-remote-delete'
+	* obby/rudel-obby-client.el (include rudel-operations): for
+	rudel-insert-op and rudel-delete-op
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk): use
+	`rudel-remote-operation' with rudel-insert-op to insert chunks
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins): use
+	`rudel-remote-operation' instead of `rudel-remote-insert'
+	(rudel-obby-connection::rudel-obby/obby_document/record/del): use
+	`rudel-remote-operation' instead of `rudel-remote-delete'
+	* jupiter/jupiter-operation.el (include rudel-operations): for
+	rudel-operation
+	(jupiter-operation): derived from rudel-operation
+	(jupiter-operation::jupiter-apply): removed; replaced by generic
+	`rudel-apply'
+	* jupiter/jupiter-nop.el (jupiter-nop::jupiter-apply): removed;
+	replaced by `rudel-apply'
+	(jupiter-nop::rudel-apply): new method; implements generic
+	`rudel-apply'
+	* jupiter/jupiter-insert.el (include rudel-operations): for
+	jupiter-insert-op
+	(jupiter-insert): derived from jupiter-insert-op
+	(jupiter-insert::jupiter-apply): removed; inherited from
+	jupiter-insert-op
+	(jupiter-insert::slot-missing): removed; inherited from
+	jupiter-insert-op
+	* jupiter/jupiter-delete.el (include rudel-operations): for
+	jupiter-delete-op
+	(jupiter-delete): derived from jupiter-delete-op
+	(jupiter-delete::jupiter-apply): removed; inherited from
+	jupiter-delete-op
+	(jupiter-delete::slot-missing): removed; inherited from
+	jupiter-delete-op
+	* jupiter/jupiter-compound.el (jupiter-compound::jupiter-apply):
+	removed; replaced by `rudel-apply'
+	(jupiter-compound::rudel-apply): new method; implements generic
+	`rudel-apply'
+	* rudel.el (include rudel-operations): everything is represented
+	in terms of operations
+	(include rudel-operators): operations apply changes to objects
+	through operators
+	(rudel-document::rudel-insert): new method; performs insert
+	operation
+	(rudel-document::rudel-delete): new method; performs delete
+	operation
+	(rudel-document::rudel-local-insert): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-local-delete): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-remote-insert): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-remote-delete): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-local-operation): new method; apply
+	operation using overlay and connection operators
+	(rudel-document::rudel-remote-operation): new method; apply
+	operation using document and overlay operators
+	(rudel-handle-buffer-change): realize buffer changes using
+	operations
+	* rudel-operators.el (new file): collections of operations on
+	Rudel data types
+	* rudel-operations.el (new file): operation classes
+
+2009-02-01  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	handle jupiter-nop
+
+	* jupiter/jupiter-delete.el (jupiter-delete::jupiter-transform):
+	in inner cond, use matching pattern but empty body for
+	no-operation cases; in outer cond, handle jupiter-nop
+
+	* jupiter/jupiter-compound.el (jupiter-compound): now derived from
+	jupiter-operation; should have been right from the start
+
+2009-01-31  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-default-username): Default name used when
+	prompting for user name; required by rudel-interactive
+
+	* rudel-interactive.el (rudel-read-backend): fixed typo
+
+2009-01-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	fixed two offset calculations
+	* jupiter/jupiter-delete.el (jupiter-delete::jupiter-transform):
+	fixed offset calculation
+
+	* rudel.el (rudel-backend::rudel-ask-connect-info): changed from
+	method to generic
+	(rudel-backend::rudel-connect): changed from method to generic
+	(rudel-backend::rudel-ask-host-info): changed from method to
+	generic
+	(rudel-backend::rudel-host): changed from method to generic
+	(rudel-backend::rudel-make-document): changed from method to
+	generic
+	(rudel-session::rudel-disconnect): changed from method to generic
+	(rudel-session::rudel-change-color-): changed from method to
+	generic
+	(rudel-session::rudel-publish): changed from method to generic
+	(rudel-session::rudel-subscribe-to): changed from method to
+	generic
+	(rudel-session::rudel-unsubscribe-from): changed from method to
+	generic
+	(rudel-session::rudel-local-insert): changed from method to
+	generic
+	(rudel-session::rudel-local-delete): changed from method to
+	generic
+	(rudel-session::rudel-remote-insert): changed from method to
+	generic
+	(rudel-session::rudel-remote-delete): changed from method to
+	generic
+
+2009-01-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-overlay.el (header): fixed version
+	(whole file): cosmetic changes
+	(rudel-author-overlay-p): added documentation string
+	(rudel-author-overlays): added documentation string
+
+	* rudel-mode.el (rudel-minor-keymap): cosmetic changes
+
+	* rudel-mode.el (rudel-minor-keymap): Separated session
+	participation and hosting items
+
+	* obby/rudel-obby.el (rudel-obby-long-message-threshold): Added
+	documentation string
+	(rudel-obby-long-message-chunk-size): Added documentation string
+	(rudel-obby-backend::rudel-connect): Do not set process object;
+	this is done in the `initialize-instance' method of the base class
+	(rudel-obby-format-color): retrieve color components with
+	`color-values'
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-remove-context): improved
+	documentation string
+	(rudel-obby-connection::rudel-publish): added a comment
+	(rudel-obby-connection::rudel-subscribe-to): added some comments;
+	cleaned up code
+	(rudel-obby-connection::rudel-unsubscribe-from): added a comment
+	(rudel-obby-connection::rudel-obby/net6_ping): added documentation
+	string
+	(rudel-obby-connection::rudel-obby/net6_encryption): added
+	documentation string
+	(rudel-obby-connection::rudel-obby/net6_login_failed): added
+	documentation string
+	(rudel-obby-connection::rudel-obby/net6_client_part): use `='
+	instead of `eq' to compare client ids; fixed documentation string;
+	improved comments
+	(rudel-obby-connection::rudel-obby/obby_user_colour): use `='
+	instead of `eq' to compare user ids
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk): use
+	`=' instead of `eq' to compare user ids; use accessor
+	`user-id-numeric'
+
+	* obby/rudel-obby-util.el (rudel-obby-dispatch): new functions;
+	dispatches to class methods based on message name; handles errors
+	properly
+	* obby/rudel-obby-server.el (rudel-obby-client::rudel-message):
+	use `rudel-obby-dispatch' to dispatch message
+	(rudel-obby-client::rudel-obby/obby_document): use
+	`rudel-obby-dispatch' to dispatch message
+	(rudel-obby-client::rudel-obby/obby_document/record): use
+	`rudel-obby-dispatch' to dispatch message
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-message): use `rudel-obby-dispatch'
+	to dispatch message; moved to a different location
+	(rudel-obby-connection::rudel-obby/obby_document): use
+	`rudel-obby-dispatch' to dispatch message
+	(rudel-obby-connection::rudel-obby/obby_document/record): use
+	`rudel-obby-dispatch' to dispatch message
+
+	* obby/rudel-obby-util.el (generic rudel-message): made the method
+	a generic function and updated the documentation string
+
+2009-01-26  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-document::revision): removed; The
+	slot is no longer needed
+	* obby/rudel-obby-server.el (require jupiter): uses jupiter
+	algorithm
+	(rudel-obby-client::rudel-obby/obby_document_create): add a
+	jupiter context for the document
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): add a
+	jupiter context for the document
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): remove
+	the jupiter context associated to the document
+	(rudel-obby-client::rudel-obby/obby_document/record/ins):
+	transformed the operation before applying it to the buffer; use
+	the respective jupiter contexts of the receivers when sending the
+	operation
+	(rudel-obby-client::rudel-obby/obby_document/record/del):
+	transformed the operation before applying it to the buffer; use
+	the respective jupiter contexts of the receivers when sending the
+	operation
+	(rudel-obby-server::contexts): new slot; stores jupiter contexts
+	for pairs of clients and documents
+	(rudel-obby-server::initialize-instance): new method; store an
+	empty hash-table in the `contexts' slot
+	(rudel-obby-server::rudel-find-context): find the jupiter context
+	for a pair of a client and a document
+	(rudel-obby-server::rudel-add-context): add a jupiter context for
+	a pair of a client and a document
+	(rudel-obby-server::rudel-remove-context): remove the jupiter
+	context for a pair of a client and a document
+	(rudel-obby-context-key): return a list of client id and document
+	id
+	* obby/rudel-obby-client.el (require jupiter): uses jupiter
+	algorithm
+	(rudel-obby-connection::contexts): new slot; stores jupiter
+	contexts for documents
+	(rudel-obby-connection::initialize-instance): new method; store an
+	empty hash-table in the `contexts' slot
+	(rudel-obby-connection::rudel-find-context): new method; return
+	the jupiter context for a document
+	(rudel-obby-connection::rudel-add-context): new method; add a
+	jupiter context for a document
+	(rudel-obby-connection::rudel-remove-context): new method; remove
+	the jupiter context for a document
+	(rudel-obby-connection::rudel-publish): add a jupiter context for
+	the new document
+	(rudel-obby-connection::rudel-subscribe-to): add a jupiter context
+	for the new document
+	(rudel-obby-connection::rudel-unsubscribe-from): remove the
+	jupiter context associated to the document
+	(rudel-obby-connection::rudel-local-insert): use revision
+	information from the jupiter context instead of the document;
+	supply the operation to the jupiter context
+	(rudel-obby-connection::rudel-local-delete): use revision
+	information from the jupiter context instead of the document;
+	supply the operation to the jupiter context
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins):
+	transform the operation using the jupiter context instead of using
+	it unmodified
+	(rudel-obby-connection::rudel-obby/obby_document/record/del):
+	transform the operation using the jupiter context instead of using
+	it unmodified
+
+2009-01-22  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el (rudel-obby-connection): removed
+	redundant slot `socket' (inherited from base class)
+
+2009-01-21  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (rudel-read-user): added comments
+	(rudel-allocate-buffer-clear-existing): added documentation string
+	(rudel-allocate-buffer-make-unique): added documentation string
+
+2009-01-19  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el, rudel-util.el, rudel-telepathy.el, rudel-speedbar.el,
+	rudel-overlay.el, rudel-mode.el, jupiter/jupiter.el,
+	jupiter/jupiter-operation.el, jupiter/jupiter-nop.el,
+	jupiter/jupiter-insert.el, jupiter/jupiter-delete.el,
+	jupiter/jupiter-compound.el, obby/rudel-obby.el,
+	obby/rudel-obby-util.el, obby/rudel-obby-server.el,
+	obby/rudel-obby-client.el (header): changed email address
+	<scymtym@users.sourceforge.net> ->
+	<scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (header): added keywords to file header
+	comment
+
+	* jupiter/jupiter.el (new file): core Jupiter algorithm
+	* jupiter/jupiter-operation.el (new file): base class for Jupiter
+	operations
+	* jupiter/jupiter-insert.el (new file): insert operation for
+	Jupiter algorithm
+	* jupiter/jupiter-delete.el (new file): delete operation for
+	Jupiter algorithm
+	* jupiter/jupiter-nop.el (new file): no-operation for Jupiter
+	algorithm
+	* jupiter/jupiter-compound.el (new file): compound operation for
+	Jupiter algorithm
+
+2009-01-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-user::client-id): added rationale
+	for type (or null integer)
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_join): added
+	documentation string; cosmetic changes
+	(rudel-obby-connection::rudel-obby/net6_client_part): use accessor
+	`rudel-client-id' when searching for the user object; set
+	client-id to nil in the user object; added documentation string
+	(rudel-obby-connection::rudel-obby/obby_sync_usertable_user):
+	store parsed user-id and color in temporaries
+	(rudel-obby-connection::rudel-obby/obby_user_colour):store parsed
+	color in a temporary; use accessor `rudel-id' when finding the
+	user object
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-change-color-): new function;
+	implements changing the color
+
+	* obby/rudel-obby-util.el
+	(rudel-obby-socket-owner::rudel-receive): improved documentation
+	string
+
+2009-01-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (REQUIREMENTS): proper list of requirements and sources
+	from which they can be obtained
+	(INSTALLING): initial version of installation instructions
+	(COMPLETING): some notes about compiling
+	* README (INTRODUCTION): short introduction
+	(GETTING STARTED): some notes about enabling Rudel, joining and
+	hosting sessions
+
+2009-01-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-long-message-threshold): new
+	variable; threshold for message size, above which messages are
+	sent in multiple chunks
+	(rudel-obby-long-message-chunk-size): Chunk size used, when
+	chunking long messages.
+	(rudel-obby-user::client-id): allow value nil; added accessor;
+	added documentation string
+	(rudel-obby-send): new function; handles low-level aspects of
+	sending obby protocol messages
+	* obby/rudel-obby-util.el: new file; contains helper
+	functionality, mainly the class `rudel-obby-socket-owner', which
+	handles sending and receiving message
+	* obby/rudel-obby-server.el (includes): replaced rudel-obby with
+	rudel-obby-util, since it contains `rudel-obby-socket-owner'
+	(class rudel-obby-client): added base class
+	`rudel-obby-socket-owner'
+	(rudel-obby-client::rudel-receive): deleted, the functionality is
+	provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-client::rudel-send): deleted, the functionality is
+	provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-client::rudel-message): new method; called by base
+	class when a message is received; dispatches to appropriate
+	handler method
+	(rudel-obby-client::rudel-obby/obby_user_colour): minor change in
+	documentation string
+	* obby/rudel-obby-client.el (includes): replaced rudel-obby with
+	rudel-obby-util, since it contains `rudel-obby-socket-owner'
+	(class rudel-obby-connection): added base class
+	`rudel-obby-socket-owner'
+	(rudel-obby-connection::rudel-disconnect): just call next method;
+	it does what this method formerly did
+	(rudel-obby-connection::rudel-close): new method; end the session,
+	when the connection is closed
+	(rudel-obby-connection::rudel-receive): deleted, the functionality
+	is provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-connection::rudel-send): deleted, the functionality is
+	provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-connection::rudel-message): new method; called by
+	base class when a message is received; dispatches to appropriate
+	handler method
+
+	* rudel.el (rudel-document::rudel-detach-from-buffer): do nothing,
+	if the document is not attached to any buffer
+
+	* obby/rudel-obby.el (rudel-obby-user): added missing accessor
+	`rudel-connected'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): transmit number
+	of synchronization items; transmit list of disconnected users
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins):
+	broadcast only to clients, which are subscribed to the document;
+	send user id of author instead of client id
+	(rudel-obby-client::rudel-obby/obby_document/record/del):
+	broadcast only to clients, which are subscribed to the document;
+	send user id of author instead of client id
+	(rudel-obby-client::rudel-subscribed-clients-not-self): new
+	method; return a list of clients subscribed to a document
+	excluding the client itself.
+
+	* obby/rudel-obby-server.el (rudel-obby-server::next-client-id):
+	first id should be 1, not 0; fixed initform accordingly
+	(rudel-obby-server::next-user-id):
+	first id should be 1, not 0; fixed initform accordingly
+
+	* rudel.el (rudel-document::rudel-chunks): fixed void variable
+	`chunks-' -> `augmented-chunks'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): send
+	individual buffer chunks with their respective authors instead of
+	one large string without author information
+	* rudel.el (rudel-document::rudel-chunks): new method; return a
+	list of buffer position ranges and the respective authors, that
+	wrote the text
+
+2009-01-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-host): cleanup
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-insert): accept arguments
+	`position' and `data' instead of `from', `to' and `what'; since
+	position is zero-based, transmit it literally
+	(rudel-obby-connection::rudel-local-delete): instead of `from' and
+	`to' accept argument `position'; since position is
+	zero-based. transmit it literally
+	(rudel-obby-connection::rudel-obby/obby_document/record):
+	identified remaining arguments; dispatch actions to appropriate
+	methods; identify methods by interning their symbols
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins): new
+	method; handle remote insert actions
+	(rudel-obby-connection::rudel-obby/obby_document/record/del): new
+	method; handle remote delete actions
+	* rudel.el (includes): include rudel-overlay
+	(rudel-document::rudel-detach-from-buffer): improved readability
+	(rudel-document::rudel-local-insert): instead of redundant
+	arguments `from', `to' and `what' accept only `position' and
+	`data'; update overlays
+	(rudel-document::rudel-local-delete): instead of redundant
+	arguments `from', `to' and `length' accept only `position' and
+	`length'; update overlays
+	(rudel-document::rudel-remote-insert): renamed arguments `from' ->
+	`position', `what' -> `data'; update overlays
+	(rudel-document::rudel-remote-delete): replaced arguments `from'
+	and `to' by `position'; update overlays
+	(rudel-handle-buffer-change): call rudel-local-{insert, delete}
+	with changed arguments
+
+2009-01-01  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-session::rudel-unsubscribed-documents): new
+	method; returns documents, to which the user associated with the
+	session is not yet subscribed
+	(rudel-subscribe): when called interactively, use
+	`rudel-unsubscribed-documents' to offer only unsubscribed
+	documents in completing read
+
+	* rudel-interactive.el (rudel-read-user-name): new function; read
+	a user name; could be used to enforce certain constraints on the
+	name
+	(rudel-read-user-color): new function; read a user color; could be
+	used to enforce certain constraints on the color
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-host-info):
+	new method; ask user for port number
+	(rudel-obby-backend::rudel-host): new method; require obby server
+	component, make the network process and construct the server
+	* obby/rudel-obby-server.el (new file): initial revision of obby
+	server for rudel
+	* obby/rudel-obby-client.el (header section): added keyword and
+	x-rcs
+	(rudel-obby-connection::rudel-publish): new method; send document
+	to server
+	(rudel-obby-connection::rudel-unsubscribe-from): send unsubscribe
+	notification to server
+	(rudel-obby-connection::rudel-local-insert): cleanup
+	(rudel-obby-connection::rudel-local-delete): new method; send
+	delete record to server and increase local revision
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk):
+	improved user locating code; do not complain, when the user is not
+	found
+	(rudel-obby-connection::rudel-obby/obby_document/record): removed
+	useless debug message
+	* rudel.el (class rudel-session): update documentation string
+	(class rudel-server-session): new class; base class for server
+	sessions
+	(rudel-choose-backend): fixed void-variable when called
+	interactively
+	(rudel-host-session): provided initial implementation, which uses
+	the selected backend to create a server
+	(rudel-subscribe): call `set-window-buffer' instead of
+	`show-buffer'
+
+	* obby/rudel-obby.el (header section): fixed history
+	(rudel-obby-version): new constant; holds version of the obby
+	backend
+	(rudel-obby-protocol-version): new constant; holds the obby
+	protocol version understood by the backend
+	(rudel-obby-document::rudel-both-ids): new method; useful when
+	locating documents by means of owner and document id
+
+	* rudel-mode.el (header section): added keywords
+
+	* rudel-interactive.el (header section): added file comment
+
+2008-12-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (class rudel-session): converted to base class for
+	other session classes; removed slots `connection' and `self' which
+	are specific for client sessions
+	(rudel-session::rudel-end): empty now; derived classes do the work
+	(rudel-session::rudel-add-user): use `object-add-to-list'
+	(rudel-session::rudel-remove-user): use `object-remove-from-list'
+	(rudel-session::rudel-add-document): use `object-add-to-list'
+	(rudel-session::rudel-remove-document): use
+	`object-remove-from-list'
+	(class rudel-client-session): derived from `rudel-session';
+	additional slots `connection' and `self'
+	(rudel-client-session::rudel-end): detach buffers from documents
+	and call `rudel-disconnect' on connection
+	(class rudel-connection): documentation string
+	(rudel-connection::rudel-disconnect): remove hook
+	`after-change-functions' only locally
+	(rudel-join-session): construct a proper session name; store
+	backend object in the session; some comments
+
+	* obby/rudel-obby.el (rudel-obby-document): cleanup; improved
+	documentation strings
+
+	* rudel-overlay.el (new file): functions for managing overlays,
+	which indicate the authors of contributions in collaborative
+	buffers
+
+	* rudel.el (rudel-allocate-buffer-function): customization option
+	for buffer allocation function
+	(rudel-subscribe): call buffer allocation function instead of just
+	using the provided name
+	* rudel-interactive.el (rudel-allocate-buffer-clear-existing): new
+	function; in case of a conflict, allocate buffer for subscription
+	by clearing the existing buffer
+	(rudel-allocate-buffer-make-unique): new function; in case of a
+	conflict, allocate buffer for subscription by producing a unique
+	name
+
+	* rudel.el (customization): added customization group definition
+	for `rudel'
+
+	* obby/rudel-obby.el (includes): require `rudel-util' instead of
+	`rudel'
+	(rudel-connect): attach connection to socket object
+	(rudel-obby-document): removed slot `subscribed' as it is now
+	contained in the base class `rudel-document'
+	(rudel-obby-escape-string): call `rudel-obby-replace-in-string'
+	instead of `obby-replace-in-string'
+	(rudel-obby-unescape-string): call `rudel-obby-replace-in-string'
+	instead of `obby-replace-in-string'
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-state-change): required by
+	`rudel-sentinel-dispatch'
+	(rudel-obby-connection::rudel-subscribe-to): do not touch slot
+	`subscribed'
+	(rudel-obby-connection::rudel-obby/obby_sync_doclist_document):
+	retrieve subscribed users and add to `subscribed' slot
+	(rudel-obby-connection::rudel-obby/obby_document_create): add
+	document owner to `subscribed' slot
+	(rudel-obby-connection::rudel-obby/obby_document/subscribe): add
+	user to `subscribed' slot
+	(rudel-obby-connection::rudel-obby/obby_document/unsubscribe):
+	remove user from `subscribed' slot
+	* rudel.el (rudel-document): added slot `subscribed' which
+	contains a list of subscribed users
+	(rudel-subscribe): do not use `rudel-unsubscribed-documents';
+	instead list all documents for now
+	(rudel-publish-buffer): add self to `subscribed' slot
+
+	* rudel-util.el (rudel-state-change): cleanup; added comments
+
+	* rudel-mode.el (rudel-minor-keymap): Fixed invalid menu
+	definition
+
+	* obby/rudel-obby.el (whole file): moved class
+	`rudel-obby-connection' and related methods into file
+	`rudel-obby-client.el'
+	(rudel-obby-backend): added capability `track-subscriptions'
+	(rudel-obby-backend::rudel-connect): require `rudel-obby-client'
+	before constructing the connection object
+	* obby/rudel-obby-client.el (new file): moved class
+	`rudel-obby-connection' and related methods into this file
+
+2008-12-29  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-connection::rudel-change-color-): new method
+	handles color changes
+	(rudel-change-color): added basic implementation, which checks the
+	backend, asks the user for a new color and calls the connection
+	object
+
+	* rudel-util.el (rudel-socket-owner::rudel-state-change): called
+	when the state of the connection changes
+	(rudel-socket-owner::rudel-close): called when the connection is
+	closed
+	(rudel-sentinel-dispatch): the argument is a message, not the
+	actual state, the state is retrieved with `process-state'
+
+	* rudel-speedbar.el (whole file): cleanup; improved comments
+
+	* rudel-mode.el (whole file): improved comments
+	(rudel-read-{backend, document}): moved to rudel-interactive.el
+	(rudel-minor-keymap): added key binding for `rudel-change-color';
+	added `options' menu item
+
+	* rudel-interactive.el (whole file): user interaction functions
+	used by all Rudel components
+
+	* rudel-util.el (whole file): utility functions used by all Rudel
+	components
+
+	* rudel.el (whole file): improved comments
+	(rudel-backend::make-document): new function create an appropriate
+	document object for the backend
+	(rudel-session::rudel-end): added documentation string
+	(rudel-session::rudel-add-user): added documentation string
+	(rudel-session::rudel-remove-user): added documentation string
+	(rudel-session::rudel-remove-document): new method; remove
+	document from session
+	(rudel-connection::rudel-publish): new function; called when a
+	buffer is published
+	(rudel-connection::rudel-unsubscribe-from): new function; called
+	when a subscription is canceled
+	(class rudel-user): added documentation strings
+	(class rudel-document): added documentation strings
+	(rudel-document::rudel-attach-to-buffer): add to
+	`after-change-functions' hook only for the buffer in question;
+	added some comments
+	(rudel-document::rudel-detach-from-buffer): cleanup
+	(rudel-document::rudel-remote-insert): added comments
+	(rudel-document::rudel-remote-delete): added comments
+	(rudel-handle-buffer-change): added comments
+	(rudel-choose-backend): added comments
+	(rudel-end-session): additional error check
+	(rudel-subscribe): call `rudel-unsubscribed-documents' when
+	completing document name; added comments
+	(rudel-unpublish-buffer): call `rudel-detach-from-buffer' and
+	`rudel-unsubscribe-from'; added comments
+
+	* obby/rudel-obby.el (whole file): improved comments
+	(rudel-obby-backend::rudel-ask-connect-info): removed :override
+	tag; added comments
+	(rudel-obby-backend::rudel-connect): removed :override tag; use
+	`make-network-process' instead of `open-network-stream' and attach
+	filter and sentinel right away; removed some debug code
+	(rudel-obby-backend::rudel-disconnect): removed :override tag
+	(rudel-obby-backend::rudel-subscribe-to): removed :override tag
+	(rudel-obby-backend::rudel-local-insert): removed :override tag
+	(rudel-obby-backend::rudel-local-delete): removed :override tag
+	(rudel-obby-backend::rudel-make-document): new method; creates a
+	new rudel-obby-document object
+	(rudel-obby-backend::rudel-available-document-id): obtains an
+	unused document id, which can be assigned to a new document
+	(class rudel-obby-connection): removed useless `host' and `port'
+	slots
+	(rudel-obby-connection::rudel-receive): removed some debug code
+	(rudel-obby-connection::rudel-send): removed some debug code
+	(rudel-obby-connection::rudel-obby/net6_client_join): fixed syntax
+	error
+	(class rudel-obby-user): added accessors for slots `client-id' and
+	`user-id'
+	(rudel-obby-user::eieio-speedbar-description): removed :override
+	tag
+	(rudel-obby-user::eieio-speedbar-object-buttonname): removed
+	:override tag
+	(class rudel-obby-document): added accessors and documentation for
+	slot `id'
+	(rudel-obby-document::eieio-speedbar-object-buttonname): removed
+	:override tag
+	(rudel-obby-replace-in-string): new function; replace a set of
+	patterns in a string
+	(rudel-obby-escape-string): new function; replace obby control
+	characters with their escape sequences
+	(rudel-obby-unescape-string): new function; inverse of
+	`rudel-obby-escape-string'
+	(rudel-obby-parse-color): added documentation
+	(rudel-obby-format-color): added documentation
+	(rudel-obby-assemble-message): properly escape message components
+	(rudel-obby-parse-message): properly unescape message components
+
+	* README (whole file): some initial notes
+	* INSTALL (whole file): some initial notes
+
+2008-12-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby (directory): new directory for files belonging to the obby
+	backend
+	* rudel-obby.el (whole file): moved to `obby' directory
+	* obby/rudel-obby.el (whole file): moved here from parent
+	directory
+
+	* Changelog (whole file): renamed to `ChangeLog?'
+	* ChangeLog? (whole file): fixed name
+
+	* INSTALL (whole file): added
+
+	* rudel.el (whole file): fixed some comments, removed some test
+	code
+	(rudel-version): new variable; global Rudel version
+	(rudel-sessions): removed; we only allow one session for now
+	(rudel-session): cleaned up
+	(rudel-session::rudel-end): cleaned up; added some comments
+	(rudel-session::rudel-add-user): cosmetic changes
+	(rudel-session::rudel-remove-user): cosmetic changes
+	(rudel-session::rudel-find-user): cosmetic changes
+	(rudel-session::rudel-add-document): cosmetic changes
+	(rudel-session::rudel-find-document): cosmetic changes
+	(rudel-backend::rudel-connect): improved documentation string
+	(rudel-backend::rudel-ask-host-info): renamed from
+	`rudel-ask-listen-info'
+	(rudel-backend::rudel-host): renamed from `rudel-listen'
+	(rudel-document::rudel-attach-to-buffer): cosmetic changes
+	(rudel-document::rudel-remote-insert): cleaned up
+	(rudel-document::rudel-remote-delete): cleaned up
+	(rudel-load-backends): cosmetic changes
+	(rudel-choose-backend): fixed message display
+	(rudel-host-session): improved documentation string
+	(rudel-change-color): raise an error since this is not yet
+	implemented
+	(rudel-subscribe): added comments
+	(rudel-unpublish-buffer): raise an error if the buffer has not
+	been published
+
+	* rudel.el (whole file): cleanup up some obsolete code
diff --git a/emacs.d/lisp/rudel/.svn/text-base/INSTALL.svn-base b/emacs.d/lisp/rudel/.svn/text-base/INSTALL.svn-base
new file mode 100644
index 0000000..2555d09
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/INSTALL.svn-base
@@ -0,0 +1,58 @@
+* REQUIREMENTS
+
+  Rudel is developed and tested only with GNU Emacs and therefore
+  unlikely to run on other Emacs variants like XEmacs.
+
+  To use Rudel, the following software is required:
+
+** GNU Emacs 22 or above
+   Rudel should work with recent versions of GNU Emacs starting from
+   version 22. Older versions of GNU Emacs or XEmacs may or not work
+   but are not actively tested.
+
+** Collection of Emacs Development Environment Tools (CEDET)
+   Cedet contains the object system Eieio, which is used in Rudel's
+   object-oriented implementation. Cedet can be obtained from
+   http://cedet.sourceforge.net/
+
+   IMPORTANT: It is necessary to use at least the 1.0pre6 version of
+   CEDET since it fixes a serious problem in the object system Eieio.
+
+   As of October 2009, Eieio is included in GNU Emacs. If you are
+   using a version built since then, you do not have to install it
+   yourself.
+
+** GnuTLS (optional)
+   Connections to Gobby servers require the gnutls-cli program.
+
+** Avahi (optional)
+   The Avahi daemon (http://avahi.org) is required for automatic
+   session discovery and advertising.
+
+   A version of GNU Emacs with Zeroconf support (GNU Emacs 23 or
+   above) is required to talk to the Avahi daemon.
+
+* INSTALLING
+
+  To install Rudel, download a released version or the current
+  development version from http://sourceforge.net/projects/rudel/ and
+  place the code in any directory you like.
+
+  Once Eieio (see CEDET in the REQUIREMENTS section above) is
+  installed, add the following to your personal Emacs configuration:
+
+  (load-file "/PATH/TO/RUDEL/rudel-loaddefs.el")
+
+  This will set Rudel up to be loaded on demand when one of the
+  commands `rudel-join-session', `rudel-host-session' or
+  `global-rudel-minor-mode' is invoked.
+
+* COMPILING
+
+  In order to achieve better performance, Emacs can byte-compile the
+  Rudel code. This can be done by opening rudel-compile.el in Emacs
+  and invoking M-x eval-buffer.
+
+Local variables:
+mode: org
+end:
diff --git a/emacs.d/lisp/rudel/.svn/text-base/Project.ede.svn-base b/emacs.d/lisp/rudel/.svn/text-base/Project.ede.svn-base
new file mode 100644
index 0000000..ff3a264
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/Project.ede.svn-base
@@ -0,0 +1,24 @@
+;; Object rudel
+;; EDE project file.
+(ede-proj-project "rudel"
+  :name "rudel"
+  :version "0.3"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp-autoloads "autoloads"
+    :name "autoloads"
+    :path ""
+    :autoload-file "rudel-loaddefs.el"
+    :autoload-dirs '("." "jupiter" "obby" "wave" "zeroconf")
+    )
+   (ede-proj-target-elisp "compile"
+    :name "rudel"
+    :path ""
+    :source '("rudel.el" "rudel-util.el" "rudel-mode.el" "rudel-interactive.el" "rudel-overlay.el" "rudel-speedbar.el" "rudel-operators.el" "rudel-operations.el" "rudel-compat.el" "rudel-tls.el" "rudel-errors.el" "rudel-state-machine.el" "rudel-backend.el" "rudel-protocol.el" "rudel-session-initiation.el" "rudel-icons.el" "rudel-hooks.el" "rudel-transport.el" "rudel-chat.el")
+    )
+   )
+  :mailinglist "rudel-devel@lists.sourceforge.net"
+  :web-site-url "http://rudel.sourceforge.net/"
+  :web-site-directory "/scymtym,rudel@web.sourceforge.net:/home/groups/r/ru/rudel/htdocs"
+  :configuration-variables 'nil
+  )
diff --git a/emacs.d/lisp/rudel/.svn/text-base/README.svn-base b/emacs.d/lisp/rudel/.svn/text-base/README.svn-base
new file mode 100644
index 0000000..aeacba7
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/README.svn-base
@@ -0,0 +1,88 @@
+* INTRODUCTION
+
+  Rudel is collaborative editing environment for GNU Emacs. Its
+  purpose is to share buffers with other users in order to edit the
+  contents of those buffers collaboratively. Rudel supports multiple
+  backends to enable communication with other collaborative editors
+  using different protocols, though currently Obby (for use with the
+  Gobby editor) is the only fully-functional one.
+
+  Since Rudel is not an application, but an extension to Emacs, it is
+  not started and used like most applications (not even Emacs
+  applications like Gnus). Rudel mostly works in the background to
+  change the behavior of the set of Emacs buffers for which it has
+  been activated.
+
+  The user interface consists of a set of key bindings, a menu entry
+  and some visual status indicators, which are added to the text and
+  mode line of buffers for which Rudel has been activated.
+
+* GETTING STARTED
+
+  Assuming Rudel has already been installed and auto loading has been
+  set up, a global Rudel mode can be enabled as follows:
+
+  : M-x global-rudel-minor-mode
+
+  This will enabled Rudel's key bindings and menu entry.
+
+** JOINING A SESSION
+
+   : M-x rudel-join-session [ C-c c j ]
+
+   Depending on the installed Rudel backends, system environment and
+   configuration, a number of questions will be asked, followed by an
+   attempt to join session described by your answers.
+
+   A typical example of the questions asked when joining a session may
+   look like this:
+
+   Server: localhost RET
+   Port (default 6522): RET
+   Username: jan RET
+   Color: light sky blue RET
+   Use Encryption (y or n): n RET
+   Global Password: RET
+   User Password: RET
+
+   IMPORTANT: For sessions using the obby backend (like in the example
+   above), the following restriction has to be taken into account:
+   + When the server is Rudel inside an Emacs process:
+     Encryption cannot be used currently in this case. Consequently
+     the answer to the `Use Encryption (y or n):' prompt above has to
+     be `n RET'.
+   + When the server is a Gobby process:
+     Gobby only supports encrypted connections. So the answer has to
+     be `y RET' is this case.
+
+   It is possible to configure frequently used sessions using the
+   customization options `rudel-configured-sessions'. When one or more
+   sessions are configured, `rudel-join-session' will provide choices
+   like "my-configured-session", ... and "ask-protocol". Selecting
+   "ask-protocol" invokes the behavior described above. Selecting one
+   of the configured sessions connects to that session without asking
+   for all the data.
+
+** HOSTING A SESSION
+
+   : M-x rudel-host-session [ C-c c h ]
+
+   Note that the session starts out without any participating users
+   (This is sometimes referred to as being a dedicated server). If you
+   want to participate in the session you host, you have to join it as
+   described above.
+
+* KNOWN ISSUES
+
+   + Publishing eshell buffers will cause your session to be
+     disconnected since eshell disables the hooks that Rudel uses to
+     catch changes to the buffer. As a workaround, you can use M-x
+     ansi-term or another terminal emulator.
+
+* LICENSE
+
+  Rudel is licensed under the same terms as GNU Emacs.
+
+Local variables:
+mode: org
+end:
diff --git a/emacs.d/lisp/rudel/.svn/text-base/TODO.svn-base b/emacs.d/lisp/rudel/.svn/text-base/TODO.svn-base
new file mode 100644
index 0000000..e5e4bf4
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/TODO.svn-base
@@ -0,0 +1,436 @@
+* Future
+** NEW Handle messages spanning multiple frames
+   + Component :: beep-transport
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** NEW Operation log can grow beyond all bounds (#37)
+   + Component :: obby-general
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   When no remote operations are received, the log of local operation
+   is not reset and therefore grows beyond all bounds.
+** NEW Terminating sessions does not work (#47)
+   + Component :: rudel-general
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   There is a menu entry for terminating sessions which are hosted by
+   Rudel, but it does not do anything.
+** NEW Rename document message is not understood (#7)
+   + Component :: obby-client
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** NEW Rename document message is not understood (#8)
+   + Component :: obby-backend
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** TODO Notification mechanism
+   + Component :: user-interface
+   + Type :: task
+   + Reporter :: jan
+   + Type :: task
+   + Assigned ::
+** TODO SubEthaEdit client functionality
+   + Component :: subethaedit-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Show cursor positions of other users (#5)
+   + Component :: rudel-user-interface
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+** TODO Some kind of server log buffer (#11)
+   + Component :: rudel-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+   It would be nice to log server events. This could be done in a
+   separate buffer or using a dedicated mechanism like
+   rudel-notification.
+** TODO Backends should be able to offer additional menu items (#14)
+   + Component :: rudel-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+** TODO Obby session can be protected by passwords (#15)
+   + Component :: obby-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+** TODO Obby users can protect their accounts with passwords (#16)
+   + Component :: obby-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+   The Gobby implementation is in obby/inc/server_buffer.hpp:851
+** TODO Zeroconf session notification (#52)
+   + Component :: zeroconf
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+   Watch interesting Zeroconf services and use `rudel-notify` if new
+   services are discovered
+** TODO State machine diagram (#59)
+   + Component :: obby-client
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO State machine diagram (#60)
+   + Component :: obby-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Send key presses as chat messages (#61)
+   + Component :: rudel-general
+   + Type :: task
+   + Reporter :: Jan
+   + Assigned ::
+   Sending key presses as chat messages could be really useful for
+   somebody something using rudel.
+** STARTED BEEP transport
+   + Component :: beep-transport
+   + Type :: task
+   + Reporter :: jan
+   + Assigned :: jan
+** STARTED Reference manual (#46)
+   + Component :: documentation
+   + Type :: task
+   + Reporter :: jan
+   + Assigned :: jan
+   In addition to the `README`, a proper reference manual would be
+   nice. At some point, complete info documentation may be
+   desirable. Docbook seems to be the best approach since we get (at
+   least):
+   + Pdf
+   + Html
+   + Info
+
+
+* Milestone rudel-0.4
+** TODO Telepathy transport
+   + Component :: telepathy-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+
+* Milestone rudel-0.3
+** TODO Multiple username/password attempts in one login attempt
+   + Component :: rudel-general
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Infinote client functionality
+   + Component :: infinote-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Support for trees of documents
+   + Component :: rudel-general
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** NEW Get rid of error calls in the server (#58)
+   + Component :: obby-backend
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   It makes no sense to call `error` when something goes wrong in
+   server code that is called from the process filter. Instead, we
+   should try to recover.
+** NEW Global mode line publish state mode does not work for all new buffers (#55)
+   + Component :: rudel-user-interface
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   `global-mode-line-publish-state-mode` is define using
+   `define-globalized-mode`. This seems to only enabled the associated
+   minor mode for buffers create by `find-file` and after major mode
+   changes. The minor mode is not activated for buffers create by
+   `create-buffer`. Since this is used when subscribing to documents,
+   this is a problem.
+** NEW Handle net6_encryption_info messages (#57)
+   + Component :: obby-backend
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** TODO Only read color hue, not complete colors (#53)
+   + Component :: rudel-user-interface
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+   Taking control over saturation and value away from the user makes
+   it impossible to choose unreadable colors.
+
+
+* Milestone rudel-0.2
+** DONE Use state pattern (#18)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Server buffers go out of sync when multi-byte characters are used (#56)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Terminate connections properly when something goes wrong (#51)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Removing documents does not work (#45)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Search list of offline users when new users log in (#44)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Reference card (#2)
+   + Component :: documentation
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE ode-line indicator of buffer status (#6)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Author overlay face may not exist (#54)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Visualization of user status (#9)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Update overlays when users change colors (#23)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Allow to toggle display of author overlays (#33)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Update file headers (#50)
+   + Component :: documentation
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: trivial
+   + Reporter :: jan
+** DONE Proper Zeroconf support (#21)
+   + Component :: zeroconf
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Add discovery component (#22)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Define initialize-instance with slots or &rest slots? (#49)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: major
+   + Reporter :: jan
+** DONE Use oref to get object names (#24)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Overlays should be removed when a buffer is detached from its document (#39)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Unsafe use of (call-next-method) (#48)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Handle `net6_login_failed' message (#10)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Add debug hints to macros (#43)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Use state pattern (#17)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Use with-parsed-arguments (#40)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+
+
+* Milestone rudel-0.1
+** FIXED User names and colors are not checked for conflicts (#12)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Write some html for rudel.sourceforge.net (#27)
+   + Component :: www
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: major
+   + Reporter :: jan
+** INVALID Repeated publishing leads to multiple document instances (#30)
+   + Component :: obby-backend
+   + Resolution :: invalid
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Document suffixes are not handled properly (#42)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Fix license texts (#32)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: trivial
+   + Reporter :: jan
+** WONTFIX Overlays break on last character (#29)
+   + Component :: rudel-user-interface
+   + Resolution :: worksforme
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Encodings are not handled in obby backend (#1)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Major mode changes break subscribed buffers (#19)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Editing in overwrite mode breaks synchronization (#35)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Yanking produces insertion and immediate deletion of the region (#36)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Documents with identical names but distinct suffixes map to same buffer (#41)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Killing a buffer does not detach it from its document (#38)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** INVALID Rudel client crashes Gobby (#25)
+   + Component :: obby-general
+   + Resolution :: invalid
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Add screenshot of session with Gobby (#20)
+   + Component :: www
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: trivial
+   + Reporter :: jan
+** DONE Replace 't with t (#34)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Operations of type jupiter-compound cannot be applied to buffers
+   (#31)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Do not sync any chunks when buffer is empty (#28)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Implement Jupiter algorithm (#13)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: major
+   + Reporter :: jan
+** DONE Replace email address (#26)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Mark contributions using overlays (#4)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: major
+   + Reporter :: jan
+** FIXED When a user leaves and joins a second user object is created (#3)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+
+Local variables:
+mode: org
+end:
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-backend.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-backend.el.svn-base
new file mode 100644
index 0000000..79cfef6
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-backend.el.svn-base
@@ -0,0 +1,305 @@
+;;; rudel-backend.el --- A generic backend management mechanism for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, backend, factory
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a generic mechanism that handles registration,
+;; query and instantiation of Rudel backends for any number of
+;; functional categories.
+;;
+;; The class and collaboration design is as follows: for each
+;; category, which is identified by a symbol, there is a factory
+;; object (an instance of `rudel-backend-factory') that is responsible
+;; for creating backend objects of the category.  Examples of
+;; categories are 'transport', 'protocol' and 'session-initiation'.
+;; In addition to creating backend object, factories also allow
+;; querying backends based on desired capabilities and load backend
+;; implementations only when required.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+
+;;; Class rudel-backend
+;;
+
+(defclass rudel-backend ()
+  ((version      :initarg  :version
+		 :type     list
+		 :documentation
+		 "A list of the form (MAJOR MINOR [MICRO
+WHATEVER*]) describing the version of the backend.")
+   (capabilities :initarg  :capabilities
+		 :type     list
+		 :initform nil
+		 :documentation
+		 "A list of symbols, or lists whose car is a
+symbol, that each describe one capability of the backend."))
+  "Base class for backend classes."
+  :abstract t)
+
+(defmethod rudel-capable-of-p ((this rudel-backend) capability)
+  "Return t if the backend THIS is capable of CAPABILITY."
+  (with-slots (capabilities) this
+    (member capability capabilities)))
+
+
+;;; Class rudel-backend-factory
+;;
+
+(defclass rudel-backend-factory ()
+  ((backends  :initarg   :backends
+	      :type       hash-table
+	      :documentation
+	      "Mapping of symbolic names to classes (prior to
+instantiation) or objects (after instantiation) for all backends
+known to the factory object.")
+   (factories :type       hash-table
+	      :allocation :class
+	      :documentation
+	      "Mapping of backend categories to responsible
+factory objects."))
+  "Factory class that holds an object for each known backend
+category. Objects manage backend implementation for one backend
+category each.")
+(oset-default rudel-backend-factory factories
+	      (make-hash-table :test #'eq))
+
+(defmethod initialize-instance ((this rudel-backend-factory) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+  (oset this :backends (make-hash-table :test #'eq)))
+
+;;;###autoload
+(defmethod rudel-get-factory :static ((this rudel-backend-factory)
+				      category)
+  "Return the factory responsible for CATEGORY.
+If there is no responsible factory, create one and return it."
+  (with-slots (factories) this
+    (or (gethash category factories)
+	(puthash category (rudel-backend-factory category) factories)))
+  )
+
+;;;###autoload
+(defmethod rudel-add-backend ((this rudel-backend-factory)
+			      name class &optional replace)
+  "Add factory class CLASS with name NAME to THIS.
+if REPLACE is non-nil, replace a registered implementation of the
+same name."
+  (with-slots (backends) this
+    (when (or (not (gethash name backends))
+	      replace)
+      (puthash name class backends))))
+
+(defmethod rudel-get-backend ((this rudel-backend-factory) name)
+  "Return backend object for name NAME or nil if there is none.
+The returned backend is of the form (NAME . OBJECT).
+
+Backends are loaded, if necessary."
+  ;; Load all available backends
+  (rudel-load-backends this)
+
+  ;; Find the backend and return it.
+  (with-slots (backends) this
+    (let ((backend (gethash name backends)))
+      (when backend
+	(cons name backend))))
+  )
+
+(defmethod rudel-all-backends ((this rudel-backend-factory))
+  "Return a list of all backends registered with THIS.
+Each list element is of the form (NAME . CLASS-OR-OBJECT)."
+  (let ((backend-list))
+    (with-slots (backends) this
+      (maphash (lambda (name class)
+		 (push (cons name class) backend-list))
+	       backends))
+    backend-list)
+  )
+
+(defmethod rudel-suitable-backends ((this rudel-backend-factory) predicate)
+  "Return a list of backends which satisfy PREDICATE.
+Each list element is of the form (NAME . OBJECT).
+Backends are loaded, if necessary."
+  ;; Load all available backends
+  (rudel-load-backends this)
+
+  ;; Retrieve and return all backends, possibly filtering the list
+  ;; using PREDICATE.
+  (if predicate
+      (remove-if-not
+       (lambda (cell)
+	 (and (object-p (cdr cell))
+	      (funcall predicate (cdr cell))))
+       (rudel-all-backends this))
+    (rudel-all-backends this))
+  )
+
+(defmethod rudel-load-backends ((this rudel-backend-factory))
+  "Load backends in THIS factory if necessary.
+Loading errors are not reported explicitly, but can be detected
+by checking for backends that still are classes rather than
+objects."
+  ;; Map lambda that loads unloaded backends over all backends. Store
+  ;; objects back after loading.
+  (with-slots (backends) this
+    (maphash
+     (lambda (name class)
+       (unless (object-p class)
+	 (condition-case error
+	     (puthash name (make-instance
+			    class (symbol-name name)) backends)
+	   (error (display-warning
+		   '(rudel backend)
+		   (format "Could not load backend `%s': %s"
+			   name
+			   (error-message-string error))
+		   :warning)))))
+	 backends))
+  )
+
+
+;;; High-level frontend functions
+;;
+
+(defsubst rudel-backend-cons-p (cell)
+  "Check whether CELL is a cons of a backend name and object."
+  (and (consp cell)
+       (symbolp (car cell))
+       (object-p (cdr cell))))
+
+;;;###autoload
+(defun rudel-backend-get (category name)
+  "A shortcut for getting backend NAME of category CATEGORY.
+The returned backend is of the form (NAME . OBJECT)."
+  (rudel-get-backend (rudel-backend-get-factory category) name))
+
+;;;###autoload
+(defun rudel-backend-get-factory (category)
+  "A shortcut for getting the factory object for CATEGORY."
+  (rudel-get-factory rudel-backend-factory category))
+
+(defun rudel-backend-suitable-backends (category predicate)
+  "Return backends from category CATEGORY that satisfy PREDICATE.
+Each list element is of the form (NAME . OBJECT)."
+  (rudel-suitable-backends
+   (rudel-backend-get-factory category)
+   predicate))
+
+(defun rudel-backend-choose (category &optional predicate)
+  "Choose a backend from CATEGORY satisfying PREDICATE automatically or by asking the user.
+The returned backend is of the form (NAME . CLASS-OR-OBJECT)."
+  (let ((backends (rudel-backend-suitable-backends
+		   category predicate)))
+    (unless backends
+      (error "No backends available"))
+
+    (if (= (length backends) 1)
+	;; If there is only one backend, we can choose that one right
+	;; away displaying a message to avoid confusing the user.
+	(let ((backend (nth 0 backends)))
+	  (message "Using backend `%s'" (symbol-name (car backend)))
+	  (sit-for 0.5)
+	  backend)
+
+      ;; When we have more than one backend, we have to ask the user,
+      ;; which one she wants.
+      (require 'rudel-interactive)
+      (rudel-read-backend backends nil 'object)))
+  )
+
+
+;;; User interaction functions
+;;
+
+(defun rudel-backend-dump (&optional load)
+  "Create display information about backends in a buffer.
+If LOAD is non-nil, load all backends before display. This makes
+available information available for the backends"
+  (interactive "p")
+  (save-excursion
+    ;; Setup a new buffer.
+    (set-buffer (get-buffer-create "*Rudel Backends*"))
+    (erase-buffer)
+    (set-window-buffer nil (current-buffer))
+    (maphash
+     (lambda (category factory)
+       ;; Load backends if requested.
+       (unless (zerop load)
+	 (rudel-load-backends factory))
+
+       ;; Insert header for this category.
+       (insert (propertize
+		(format "Category %s\n" category)
+		'face 'bold))
+       (insert (apply #'format
+		      "  %-20s %-6s %-7s %s\n"
+		      (mapcar
+		       (lambda (header)
+			 (propertize header 'face 'italic))
+		       '("name" "loaded" "version" "capabilities"))))
+
+       ;; Insert all backends provided by this factory.
+       (dolist (backend (rudel-all-backends factory))
+	 (insert (format "  %-20s %-6s %-7s (%s)\n"
+			 (propertize
+			  (symbol-name (car backend))
+			  'face 'font-lock-type-face)
+			 (propertize
+			  (prin1-to-string (object-p (cdr backend)))
+			  'face 'font-lock-variable-name-face)
+			 (propertize
+			  (if (object-p (cdr backend))
+			      (mapconcat #'prin1-to-string
+					 (oref (cdr backend) :version)
+					 ".")
+			    "?")
+			  'face 'font-lock-constant-face)
+			 (propertize
+			  (if (object-p (cdr backend))
+			      (mapconcat #'prin1-to-string
+					 (oref (cdr backend) :capabilities)
+					 " ")
+			    "?")
+			  'face 'font-lock-constant-face))))
+
+       ;; One empty line between backend categories.
+       (insert "\n"))
+     (oref rudel-backend-factory factories)))
+  )
+
+(provide 'rudel-backend)
+;;; rudel-backend.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-chat.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-chat.el.svn-base
new file mode 100644
index 0000000..c7e992f
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-chat.el.svn-base
@@ -0,0 +1,103 @@
+;;; rudel-chat.el --- Handling of chat messages
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, chat, message
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains some functions that deal with incoming chat
+;; messages. Backends that support receiving chat message should
+;; dispatch them using `rudel-chat-dispatch-message'. Chat messages
+;; will be processed in a customizable way from there.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+
+;;; Customization
+;;
+
+(defcustom rudel-chat-handler-function #'rudel-chat-handle-buffer
+  "A function that is called when chat messages arrive."
+  :group 'rudel
+  :type  '(choice (const :tag "Display messages in the echo area"
+			 rudel-chat-handle-message)
+		  (const :tag "Log messages into a buffer"
+			 rudel-chat-handle-buffer)
+		  (function :tag "Other function"))
+  )
+
+
+;;; Variables and constants
+;;
+
+(defconst rudel-chat-buffer-name "*rudel-chat-log*"
+  "Name of the buffer into which received chat message should be
+inserted.")
+
+
+;;; Interface functions
+;;
+
+(defun rudel-chat-dispatch-message (sender message)
+  "Dispatch SENDER and MESSAGE to customizable handler function."
+  (funcall rudel-chat-handler-function sender message))
+
+
+;;; Handler functions
+;;
+
+(defun rudel-chat-handle-message (sender text)
+  "Display SENDER and MESSAGE in the echo area."
+  (message "%s says: %s"
+	   (rudel-chat-format-sender sender)
+	   text))
+
+(defun rudel-chat-handle-buffer (sender text)
+  "Insert SENDER and MESSAGE in a buffer."
+  (let ((buffer (or (get-buffer rudel-chat-buffer-name)
+		    (pop-to-buffer rudel-chat-buffer-name))))
+    (with-current-buffer buffer
+      (goto-char (point-min))
+      (insert (format "%s: %s\n"
+		      (rudel-chat-format-sender sender)
+		      text))))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-chat-format-sender (user)
+  "Format USER handling nil values."
+  (if user
+      (object-name-string user)
+    "<unknown sender>"))
+
+(provide 'rudel-chat)
+;;; rudel-chat.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-compat.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-compat.el.svn-base
new file mode 100644
index 0000000..630496c
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-compat.el.svn-base
@@ -0,0 +1,158 @@
+;;; rudel-compat.el --- Compatibility code for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;; Copyright (C) 2009 Phil Hagelberg
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;;         Phil Hagelberg <phil@enigma>
+;; Keywords: rudel, compatibility
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains compatibility code required to make Rudel work
+;; with different versions of Emacs.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(unless (fboundp 'read-color)
+  (defun read-color (prompt &rest ignored)
+    "Poor man's read color without completion.
+You have to take care to only enter valid color names."
+    (read-string prompt)))
+
+
+;;; Spinner Progress Reporter
+;;
+
+(unless (functionp 'progress-reporter-spin)
+  (defvar progress-spinner-values ["-" "\\" "|" "/"])
+
+  (defsubst progress-reporter-update (reporter &optional value)
+  "Report progress of an operation in the echo area.
+
+The first parameter, REPORTER, should be the result of a call to
+`make-progress-reporter'. For reporters for which the max value
+is known, the second argument determines the actual progress of
+operation; it must be between MIN-VALUE and MAX-VALUE as passed
+to `make-progress-reporter'.
+
+However, if the change since last echo area update is too small
+or not enough time has passed, then do nothing (see
+`make-progress-reporter' for details).
+
+In this case, this function is very inexpensive, you need not
+care how often you call it."
+  (if (progress-reporter-spinner-p reporter)
+      (progress-reporter-spin reporter)
+    (when (>= value (car reporter))
+      (progress-reporter-do-update reporter value))))
+
+    (defun make-progress-reporter (message &optional min-value max-value
+                                           current-value min-change min-time)
+      "Return progress reporter object to be used with `progress-reporter-update'.
+
+MESSAGE is shown in the echo area.  When at least 1% of operation
+is complete, the exact percentage will be appended to the
+MESSAGE.  When you call `progress-reporter-done', word \"done\"
+is printed after the MESSAGE.  You can change MESSAGE of an
+existing progress reporter with `progress-reporter-force-update'.
+
+If provided, MIN-VALUE and MAX-VALUE designate starting (0%
+complete) and final (100% complete) states of operation.  The
+latter should be larger; if this is not the case, then simply
+negate all values.  Optional CURRENT-VALUE specifies the progress
+by the moment you call this function.  You should omit it or set
+it to nil in most cases since it defaults to MIN-VALUE.
+
+Optional MIN-CHANGE determines the minimal change in percents to
+report (default is 1%.)  Optional MIN-TIME specifies the minimal
+time before echo area updates (default is 0.2 seconds.)  If
+`float-time' function is not present, then time is not tracked
+at all.  If OS is not capable of measuring fractions of seconds,
+then this parameter is effectively rounded up.
+
+If MIN-VALUE and MAX-VALUE are unknown, they may be omitted to
+return a \"pulsing\" progress reporter."
+      (unless min-time
+        (setq min-time 0.2))
+      (let ((reporter
+             (cons min-value ;; Force a call to `message' now
+                   (vector (if (and (fboundp 'float-time)
+                                    (>= min-time 0.02))
+                               (float-time) nil)
+                           (or min-value 0)
+                           max-value
+                           message
+                           (if min-change (max (min min-change 50) 1) 1)
+                           min-time))))
+        (progress-reporter-update reporter (or current-value min-value))
+        reporter))
+
+    (defun progress-reporter-force-update (reporter &optional value new-message)
+        "Report progress of an operation in the echo area unconditionally.
+
+First two parameters are the same as for
+`progress-reporter-update'.  Optional NEW-MESSAGE allows you to
+change the displayed message."
+        (let ((parameters (cdr reporter)))
+          (when new-message
+            (aset parameters 3 new-message))
+          (when (aref parameters 0)
+            (aset parameters 0 (float-time)))
+          (if (progress-reporter-spinner-p reporter)
+              (progress-reporter-spin reporter)
+            (progress-reporter-do-update reporter value))))
+
+      (defun progress-reporter-spinner-p (reporter)
+        "Return t if REPORTER has an unknown max value."
+        (null (aref (cdr reporter) 2)))
+
+      (defun progress-reporter-spin (reporter)
+        "Advance indicator of spinning REPORTER."
+        (let* ((parameters (cdr reporter))
+               (index      (+ (aref parameters 1) 1)))
+          (aset parameters 1 index)
+          (let ((message-log-max nil)) ; No logging
+            (message "%s %s"
+                     (aref progress-spinner-values (mod index 4))
+                     (aref parameters 3))))))
+
+(unless (functionp 'string-match-p)
+  (defsubst string-match-p (regexp string &optional start)
+    "Same as `string-match' except this function does not change the match data"
+    (let ((inhibit-changing-match-data t))
+      (string-match regexp string start))))
+
+(defun rudel-get-coding-system (name)
+  (if (functionp 'coding-system-from-name)
+      (coding-system-from-name name)
+    ;; May need to try a little harder here for Emacs 22 depending on
+    ;; what kind of encoding names are given us.
+    (intern name)))
+
+(provide 'rudel-compat)
+;;; rudel-compat.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-compile.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-compile.el.svn-base
new file mode 100644
index 0000000..aeba765
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-compile.el.svn-base
@@ -0,0 +1,46 @@
+;;; rudel-compile.el --- Byte-compile Rudel
+;;
+;; Copyright (C) 2009 Phil Hagelberg
+;;
+;; Author: Phil Hagelberg <phil@enigma>
+;; Keywords: Rudel, compile
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Press M-x eval-buffer to byte-compile Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(let ((rudel-dir (file-name-directory
+		  (or (buffer-file-name) load-file-name))))
+  ;; Adjust load path for compilation.
+  (dolist (dir '("." "jupiter" "obby" "zeroconf"))
+    (let ((d (concat rudel-dir "/" dir)))
+      (add-to-list 'load-path d)))
+
+  ;; Byte compile everything.
+  (byte-recompile-directory rudel-dir 0))
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-debug.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-debug.el.svn-base
new file mode 100644
index 0000000..747bf68
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-debug.el.svn-base
@@ -0,0 +1,215 @@
+;;; rudel-debug.el --- Debugging functions for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, debugging
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Debugging functions for Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'data-debug)
+(require 'eieio-datadebug)
+
+(require 'rudel-util)
+
+
+;;; Customization
+;;
+
+(defgroup rudel-debug nil
+  "Customization options related to Rudel's debugging functions."
+  :group 'rudel)
+
+(defface rudel-debug-sent-data-face
+  '((default (:background "orange")))
+  "Face used for sent data."
+  :group 'rudel-debug)
+
+(defface rudel-debug-received-data-face
+  '((default (:background "light sky blue")))
+  "Face used for received (but not yet processed) data."
+  :group 'rudel-debug)
+
+(defface rudel-debug-received-processed-data-face
+  '((default (:background "DeepSkyBlue1")))
+  "Face used for received data after processing."
+  :group 'rudel-debug)
+
+(defface rudel-debug-state-face
+  '((default (:background "light gray")))
+  "Face used when indicating state changes."
+  :group 'rudel-debug)
+
+(defface rudel-debug-special-face
+  '((default (:background "light sea green")))
+  "Face used for additional information."
+  :group 'rudel-debug)
+
+(defvar rudel-debug-tag-faces
+  '((:sent               . (rudel-debug-sent-data-face               "<  "))
+    (:received           . (rudel-debug-received-data-face           ">  "))
+    (:received-processed . (rudel-debug-received-processed-data-face ">> "))
+    (:state              . (rudel-debug-state-face                   "|  "))
+    (:special            . (rudel-debug-special-face                 ";  ")))
+  "Associate tag to faces and prefixes.")
+
+
+;;; Data debug functions
+;;
+
+(defun rudel-adebug-session ()
+  "Analyze current session in data debug buffer."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-current-buffer (data-debug-new-buffer "RUDEL-SESSION")
+    (data-debug-insert-thing rudel-current-session "# " "")))
+
+(defun rudel-adebug-server (server)
+  "Analyze server in data debug buffer."
+  (interactive)
+
+  (with-current-buffer (data-debug-new-buffer "RUDEL-SERVER")
+    (data-debug-insert-thing server "# " "")))
+
+
+;;; Advice stuff
+;;
+
+(defadvice rudel-join-session (after rudel-debug last activate)
+  "Run data-debug inspection on newly created session objects."
+  (require 'rudel-debug)
+  (rudel-adebug-session))
+
+(defadvice rudel-host-session (after rudel-debug last activate)
+  "Run data-debug inspection on newly created server objects."
+  (require 'rudel-debug)
+  (rudel-adebug-server ad-return-value))
+
+
+;;; Network functions
+;;
+
+(defun rudel-suspend-session-socket ()
+  "Suspend the socket associated to the current session."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-slots (connection) rudel-current-session
+    (with-slots (socket) connection
+      (stop-process socket))))
+
+(defun rudel-resume-session-socket ()
+  "Resume the socket associated to the current session."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-slots (connection) rudel-current-session
+    (with-slots (socket) connection
+      (continue-process socket))))
+
+
+;;; Reset functions
+;;
+
+(defun rudel-kill-processes ()
+  "TODO"
+  (interactive)
+  (mapc #'delete-process (process-list)))
+
+(defun rudel-reset ()
+  "TODO"
+  (interactive)
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (when rudel-buffer-document
+	(setq rudel-buffer-document nil))))
+  (rudel-kill-processes)
+  (setq rudel-current-session nil))
+
+
+;;; Socket debugging
+;;
+
+(defmethod rudel-state-change :before ((this rudel-socket-owner)
+				       state message)
+  "Print STATE and MESSAGE to debug stream."
+  (with-slots (socket) this
+    (rudel-debug-stream-insert
+     (rudel-debug-stream-name socket)
+     :state
+     (format "connection state changed to %s: \"%s\""
+	     (upcase (symbol-name state))
+	     ;; MESSAGE ends with a newline; remove it
+	     (substring message 0 -1))))
+  )
+
+
+;;; Utility functions
+;;
+
+(defun rudel-debug-stream-name (socket)
+  "Return debug stream name for SOCKET."
+  (process-name socket))
+
+(defun rudel-debug-stream-insert (stream tag data &optional object)
+  "Insert DATA and possibly OBJECT into stream using TAG as style."
+  (let* ((buffer-name (format "*%s stream*" stream))
+	 (buffer      (or (get-buffer buffer-name)
+			  (data-debug-new-buffer buffer-name)))
+	 (appearance (cdr (assoc tag rudel-debug-tag-faces)))
+	 (face       (when appearance
+		       (or (nth 0 appearance)
+			   'default)))
+	 (prefix     (or (nth 1 appearance)
+			 "")))
+    (save-excursion
+      (set-buffer buffer)
+      (goto-char 0)
+      (insert prefix
+	      (propertize data 'face face)
+	      (if (string= (substring data -1) "\n")
+		  "" "\n"))
+      (when object
+	(data-debug-insert-thing object prefix ""))))
+    )
+
+(provide 'rudel-debug)
+;;; rudel-debug.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-errors.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-errors.el.svn-base
new file mode 100644
index 0000000..9811511
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-errors.el.svn-base
@@ -0,0 +1,66 @@
+;;; rudel-errors.el --- Error data used in Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, errors, conditions
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; The following condition hierarchy is defined:
+;;
+;; error
+;; +- rudel-error
+;;    +- rudel-join-error
+;;    +- rudel-host-error
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+;; rudel-join-error
+
+(intern "rudel-join-error")
+
+(put 'rudel-join-error 'error-conditions
+     '(error
+       rudel-error rudel-join-error))
+
+(put 'rudel-join-error 'error-message
+     "Could not join session")
+
+;; rudel-host-error
+
+(intern "rudel-host-error")
+
+(put 'rudel-host-error 'error-conditions
+     '(error
+       rudel-error rudel-host-error))
+
+(put 'rudel-host-error 'error-message
+     "Could not host session")
+
+(provide 'rudel-errors)
+;;; rudel-errors.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-hooks.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-hooks.el.svn-base
new file mode 100644
index 0000000..0cc9a3e
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-hooks.el.svn-base
@@ -0,0 +1,252 @@
+;;; rudel-hooks.el --- Hooks for Rudel events
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, hook
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains all global hooks (as opposed to hooks provided
+;; by individual objects) provided by Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+
+;;; Hook variables
+;;
+
+(defvar rudel-session-start-hook nil
+  "This hook is run when a new session is started.
+The only argument is the session object.")
+
+(defvar rudel-session-end-hook nil
+  "This hook is run when a session ends.
+The only argument is the session object.")
+
+(defvar rudel-session-add-user-hook nil
+  "This hook is run when a user is added to a session.
+The arguments are the session and the user.")
+
+(defvar rudel-session-remove-user-hook nil
+  "This hook is run when a user is removed from a session.
+The arguments are the session and the user.")
+
+(defvar rudel-session-add-document-hook nil
+  "This hook is run when a document is added to a session.
+The arguments are the session and the document.")
+
+(defvar rudel-session-remove-document-hook nil
+  "This hook is run when a document is removed from a session.
+The arguments are the session and the document.")
+
+
+(defvar rudel-user-change-hook nil
+  "This hooks is run when a user object changes.
+The only argument is the user object.")
+
+
+(defvar rudel-document-attach-hook nil
+  "This hook is run when a document is attached to a buffer.
+The arguments are the document and the buffer.")
+
+(defvar rudel-document-detach-hook nil
+  "This hook is run when document is detached from its buffer.
+The arguments are the document and the buffer.")
+
+
+;;; Handlers
+;;
+
+(defun rudel-hooks--session-start (session)
+  "Watch SESSION for added/removed users and documents."
+  ;; Install handlers for the hooks of the session.
+  (with-slots (users documents) session
+
+    ;; Watch for session end.
+    (object-add-hook session 'end-hook
+		     #'rudel-hooks--session-end)
+
+    ;; Watch all users in the session.
+    (dolist (user users)
+      (rudel-hooks--session-add-user session user))
+
+    ;; Watch session for added/removed users.
+    (object-add-hook
+     session 'add-user-hook
+     #'rudel-hooks--session-add-user)
+    (object-add-hook
+     session 'remove-user-hook
+     #'rudel-hooks--session-remove-user)
+
+    ;; Watch all documents in the session.
+    (dolist (document documents)
+      (rudel-hooks--session-add-document session document))
+
+    ;; Watch session for added/removed documents.
+    (object-add-hook
+     session 'add-document-hook
+     #'rudel-hooks--session-add-document)
+    (object-add-hook
+     session 'remove-document-hook
+     #'rudel-hooks--session-remove-document))
+  )
+
+(defun rudel-hooks--session-end (session)
+  "Stop watching SESSION for added/removed users and documents."
+  ;; Remove handlers from the session.
+  (with-slots (users documents) session
+
+    ;; Stop watching for session end.
+    (object-remove-hook session 'end-hook
+			#'rudel-hooks--session-end)
+
+    ;; Stop watching all users in the session.
+    (dolist (user users)
+      (rudel-hooks--session-remove-user session user))
+
+    ;; Stop watching session for added/removed users.
+    (object-remove-hook
+     session 'add-user-hook
+     #'rudel-hooks--session-add-user)
+    (object-remove-hook
+     session 'remove-user-hook
+     #'rudel-hooks--session-remove-user)
+
+    ;; Stop watching all documents in the session.
+    (dolist (document documents)
+      (rudel-hooks--session-remove-document session document))
+
+    ;; Stop watching session for added/removed documents.
+    (object-remove-hook
+     session 'add-document-hook
+     #'rudel-hooks--session-add-document)
+    (object-remove-hook
+     session 'remove-document-hook
+     #'rudel-hooks--session-remove-document))
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-end-hook session)
+  )
+
+(defun rudel-hooks--session-add-user (session user)
+  "Watch USER for changes and run `rudel-session-add-user-hook'."
+  ;; Watch USER.
+  (object-add-hook user 'change-hook #'rudel-hooks--user-change)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-add-user-hook session user))
+
+(defun rudel-hooks--session-remove-user (session user)
+  "Stop watching USER and run `rudel-session-remove-user-hook'"
+  ;; Stop watching USER.
+  (object-remove-hook user 'change-hook #'rudel-hooks--user-change)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-remove-user-hook
+		      session user))
+
+(defun rudel-hooks--session-add-document (session document)
+  "Watch DOCUMENT and run `rudel-session-add-document-hook'."
+  ;; Watch document for attach/detach.
+  (object-add-hook document 'attach-hook
+		   #'rudel-hooks--document-attach)
+  (object-add-hook document 'detach-hook
+		   #'rudel-hooks--document-detach)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-add-document-hook
+		      session document)
+  )
+
+(defun rudel-hooks--session-remove-document (session document)
+  "Stop watching DOCUMENT and run `rudel-session-remove-document-hook'."
+  ;; Stop watching DOCUMENT for attach/detach.
+  (object-remove-hook
+   document 'attach-hook #'rudel-hooks--document-attach)
+  (object-remove-hook
+   document 'detach-hook #'rudel-hooks--document-detach)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-remove-document-hook
+		      session document)
+  )
+
+
+(defun rudel-hooks--user-change (user)
+  "Run `rudel-user-change-hook' with argument USER."
+  (run-hook-with-args 'rudel-user-change-hook user))
+
+
+(defun rudel-hooks--document-attach (document buffer)
+  "Run `rudel-document-attach-hook' with arguments DOCUMENT and BUFFER."
+  (run-hook-with-args 'rudel-document-attach-hook
+		      document buffer))
+
+(defun rudel-hooks--document-detach (document buffer)
+  "Run `rudel-document-detach-hook' with arguments DOCUMENT and BUFFER."
+  (run-hook-with-args 'rudel-document-detach-hook
+		      document buffer))
+
+
+;;; Initialization
+;;
+
+(defun rudel-hooks--install-handlers ()
+  "Install handlers for session start/end."
+  ;; Install handlers for already started sessions.
+  (when (boundp 'rudel-current-session)
+    (mapc
+     #'rudel-hooks--session-start
+     (when rudel-current-session
+       (list rudel-current-session))))
+
+  ;; Watch for session start/end.
+  (add-hook 'rudel-session-start-hook
+	    #'rudel-hooks--session-start)
+  )
+
+(defun rudel-hooks--uninstall-handlers ()
+  "Uninstall handlers for session start/end."
+  ;; Stop watching session start/end.
+  (remove-hook 'rudel-session-start-hook
+	       #'rudel-hooks--session-start)
+
+  ;; Uninstall handlers for already started sessions.
+  (when (boundp 'rudel-current-session)
+    (mapc
+     #'rudel-hooks--session-end
+     (when rudel-current-session
+       (list rudel-current-session))))
+  )
+
+(rudel-hooks--install-handlers)
+
+(provide 'rudel-hooks)
+;;; rudel-hooks.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-icons.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-icons.el.svn-base
new file mode 100644
index 0000000..9bb35b5
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-icons.el.svn-base
@@ -0,0 +1,90 @@
+;;; rudel-icons.el --- Icons used by Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, icons
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file loads all icons used in Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'image)
+
+
+;;; Image constants
+;;
+
+(defconst rudel-icons-image-formats '(svg png)
+  "Image formats to try (in that order) when loading Rudel icons.")
+
+(defconst rudel-icons-directory
+  (file-name-as-directory
+   (concat (file-name-directory
+	    (locate-library "rudel-icons.el"))
+	   "icons"))
+  "Directory that holds Rudel icon files.")
+
+
+;;; Helper macro
+;;
+
+(defmacro rudel-defimage (name &optional docstring)
+  "Load image from Rudel icon directory and define image named NAME.
+Optional argument DOCSTRING is the documentation string to
+associate with the image."
+  (declare (doc-string 2))
+  (let ((icon  (intern (format "rudel-icon-%s" name)))
+	(specs (mapcar
+		(lambda (type)
+		  `(:type   ,type
+		    :ascent center
+		    :mask   heuristic
+		    :file   ,(concat rudel-icons-directory
+				     name "." (symbol-name type))))
+		rudel-icons-image-formats)))
+    `(defimage ,icon
+       (,@specs)
+       ,(or docstring
+	    (format "%s icon." (capitalize name)))))
+  )
+
+
+;;; Image definitions
+;;
+
+(rudel-defimage "person")
+(rudel-defimage "document")
+(rudel-defimage "connected")
+(rudel-defimage "disconnected")
+(rudel-defimage "plaintext")
+(rudel-defimage "encrypted")
+
+(provide 'rudel-icons)
+;;; rudel-icons.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-interactive.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-interactive.el.svn-base
new file mode 100644
index 0000000..5dda752
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-interactive.el.svn-base
@@ -0,0 +1,181 @@
+;;; rudel-interactive.el --- User interaction functions for Rudel.
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, user, interface, interaction
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Functions for user interactions commonly used in Rudel components.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'rudel-compat) ;; for `read-color' replacement
+
+
+;;; Function for reading Rudel objects from the user.
+;;
+
+(defun rudel-read-backend (backends &optional prompt return)
+  "Read a backend name from BACKENDS and return that name or the actual backend depending on RETURN.
+If RETURN is 'object, return the backend object which is of the
+form (NAME . CLASS-OR-OBJECT); Otherwise return the name as
+string."
+  (unless prompt
+    (setq prompt "Backend: "))
+  (let* ((backend-names (mapcar (lambda (cell)
+				  (symbol-name (car cell)))
+				backends))
+	 (backend-name  (completing-read prompt backend-names nil t)))
+    (cond
+     ((eq return 'object)
+       (assoc (intern backend-name) backends))
+     (t backend-name)))
+  )
+
+(defun rudel-read-session (sessions &optional prompt return)
+  "Read a session name from SESSIONS and return that name or the session info depending on RETURN.
+If PROMPT is non-nil use as prompt string.
+If RETURN is 'object, return the session object; Otherwise return
+the name as string."
+  (unless prompt
+    (setq prompt "Session: "))
+  ;; For presentation and identification of sessions, use the :name
+  ;; property.
+  (flet ((to-string (session)
+		    (if (rudel-backend-cons-p session)
+			(symbol-name (car session))
+		      (plist-get session :name))))
+    ;; Read a session by name, then return that name or the
+    ;; corresponding session info.
+    (let ((session-name (completing-read prompt
+					 (mapcar #'to-string sessions)
+					 nil t)))
+      (cond
+       ((eq return 'object)
+	(find session-name sessions
+	      :key  #'to-string :test #'string=))
+       (t session-name))))
+  )
+
+(defun rudel-read-user-name ()
+  "Read a username.
+The default is taken from `rudel-default-username'."
+  (read-string "Username: " rudel-default-username))
+
+(defun rudel-read-user-color ()
+  "Read a color."
+  (read-color "Color: " t))
+
+(defun rudel-read-user (&optional users prompt return)
+  "Read a user name from USERS and return that name or the actual user depending on RETURN.
+If USERS is nil, use the user list of `rudel-current-session'.
+If RETURN. is 'object, return the user object; Otherwise return
+the name as string."
+  ;; If no user list is provided, the user list of the current session
+  ;; is used.
+  (unless users
+    (if rudel-current-session
+	(setq users (oref rudel-current-session :users))
+      (error "No user list and no active Rudel session")))
+  (unless prompt
+    (setq prompt "User: "))
+  ;; Construct a list of user name, read a name with completion and
+  ;; return a user name of object.
+  (let* ((user-names (mapcar 'object-name-string users))
+	 (user-name  (completing-read prompt user-names nil t)))
+    (cond
+     ((eq return 'object)
+      (find user-name users
+	    :test 'string= :key 'object-name-string))
+     (t user-name)))
+  )
+
+(defun rudel-read-document (&optional documents prompt return)
+  "Read a document name from DOCUMENTS and return that name or the actual document depending on RETURN.
+If RETURN. is 'object, return the backend object; Otherwise
+return the name as string."
+  (unless documents
+    (if rudel-current-session
+	(setq documents (oref rudel-current-session :documents))
+      (error "No document list and no active Rudel session")))
+  (unless documents
+    (error "No documents")) ; TODO error is a bit harsh
+  (unless prompt
+    (setq prompt "Document: "))
+
+  ;; Construct list of names, read one name and return that name or
+  ;; the named object.
+  (let* ((document-names (mapcar #'rudel-unique-name documents))
+	 (document-name  (completing-read prompt document-names nil t)))
+    (cond
+     ((eq return 'object)
+      (find document-name documents
+	    :test #'string= :key #'rudel-unique-name))
+     (t document-name)))
+  )
+
+
+;;; Buffer allocation functions
+;;
+
+(defun rudel-allocate-buffer-clear-existing (name)
+  "When the requested buffer NAME exists, clear its contents and use it."
+  (let ((buffer (get-buffer name)))
+    (if buffer
+	(progn
+	  ;; Ask the user whether it is OK to erase the contents of
+	  ;; the buffer.
+	  (unless (yes-or-no-p (format
+				"Buffer `%s' already exists; Erase contents? "
+				name))
+	    (error "Buffer `%s' already exists" name)) ;; TODO throw or signal; not error
+	  ;; When the buffer is attached to a different document, ask
+	  ;; whether it is OK to detach the buffer.
+	  (let ((document (rudel-buffer-document buffer)))
+	    (unless (or (not document)
+			(yes-or-no-p (format
+				      "Buffer `%s' is attached to the document `%s'; Detach? "
+				      name
+				      (rudel-unique-name document))))
+	      (error "Buffer `%s' already attached to a document" name)))
+	  ;; Delete buffer contents; maybe detach buffer first.
+	  (when (rudel-buffer-has-document-p buffer)
+	    (rudel-unpublish-buffer buffer))
+	  (with-current-buffer buffer
+	    (erase-buffer)))
+      (setq buffer (get-buffer-create name)))
+    buffer)
+  )
+
+(defun rudel-allocate-buffer-make-unique (name)
+  "When the requested buffer NAME exists, create another buffer."
+  (get-buffer-create (generate-new-buffer-name name)))
+
+(provide 'rudel-interactive)
+;;; rudel-interactive.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-loaddefs.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-loaddefs.el.svn-base
new file mode 100644
index 0000000..9de8708
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-loaddefs.el.svn-base
@@ -0,0 +1,23 @@
+;;; rudel-loaddefs.el
+
+(autoload 'rudel-join-session "rudel" "Start a collaborative Rudel session" t)
+(autoload 'rudel-host-session "rudel" "Host a collaborative Rudel session" t)
+(autoload 'rudel-speedbar "rudel-speedbar"
+  "Show connected users and documents for the Rudel session in speedbar" t)
+(autoload 'global-rudel-minor-mode "rudel-mode"
+  "Bindings for rudel session-level commands" t)
+
+(global-set-key (kbd "C-c c j") 'rudel-join-session)
+
+(setq rudel-dir (file-name-directory (or (buffer-file-name) load-file-name)))
+
+(dolist (dir '("." "jupiter" "obby" "zeroconf"))
+  (add-to-list 'load-path (concat rudel-dir "/" dir)))
+
+(eval-after-load 'rudel
+  '(progn (global-rudel-minor-mode)
+          (require 'rudel-obby)
+          (when (require 'zeroconf nil t)
+            (require 'rudel-zeroconf))))
+
+(provide 'rudel-loaddefs)
\ No newline at end of file
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-mode.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-mode.el.svn-base
new file mode 100644
index 0000000..182188a
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-mode.el.svn-base
@@ -0,0 +1,621 @@
+;;; rudel-mode.el --- Global and buffer-local Rudel minor modes
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, mode
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the following global and buffer-local Rudel
+;; minor modes:
+;;
+;; + `rudel-header-subscriptions-minor-mode': Display subscribed users
+;;   and their respective status in the header line
+;; + `rudel-mode-line-publish-state-minor-mode': Display publication
+;;   state of buffers in their mode lines
+;; + `global-rudel-minor-mode': Installs a keymap and a Rudel menu
+
+
+;;; History:
+;;
+;; 0.4 - Display buffer publication state in mode line.
+;;
+;; 0.3 - Display subscriptions in header line.
+;;
+;; 0.2 - Use define-minor-mode.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'easy-mmode)
+(require 'easymenu)
+
+(require 'rudel)
+(require 'rudel-hooks)
+
+
+;;; Customization Options
+;;
+
+(defcustom rudel-header-subscriptions-use-images t
+  "Use images when displaying subscribed users in header-line."
+  :group 'rudel
+  :type  'boolean
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-header-subscriptions--options-changed))))
+
+(defcustom rudel-header-subscriptions-separator " "
+  "String used to separate indicator strings of subscribed users."
+  :group 'rudel
+  :type  'string
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-header-subscriptions--options-changed))))
+
+(defcustom rudel-mode-line-publish-state-unpublished-string "-"
+  "String used to indicate not published state in the mode line."
+  :group 'rudel
+  :type  'string
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-mode-line-publish-state--options-changed))))
+
+(defcustom rudel-mode-line-publish-state-published-string "P"
+  "String used to indicate published state in the mode line."
+  :group 'rudel
+  :type  'string
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-mode-line-publish-state--options-changed))))
+
+(dolist (v '(rudel-header-subscriptions-use-images
+             rudel-header-subscriptions-separator
+             rudel-mode-line-publish-state-unpublished-string
+             rudel-mode-line-publish-state-published-string))
+  (put v 'save-local-variable t))
+
+
+;;; Header line subscriptions helper functions
+;;
+
+(defun rudel-header-subscriptions--make-format (document)
+  "Return a Lisp object usable as `header-line-format' generated from DOCUMENT."
+  (with-slots (subscribed) document
+    (mapconcat
+     (lambda (user)
+       (rudel-display-string
+	user rudel-header-subscriptions-use-images))
+     subscribed rudel-header-subscriptions-separator)))
+
+(defun rudel-header-subscriptions--update-from-document (document)
+  "Update header-line of the buffer attached to DOCUMENT."
+  (with-slots (buffer) document
+    (when buffer
+      (with-current-buffer buffer
+	(setq header-line-format
+	      (rudel-header-subscriptions--make-format document))
+	(force-mode-line-update)))))
+
+(defun rudel-header-subscriptions--update-from-buffer ()
+  "Update header-line of the current buffer from associated document."
+  (setq header-line-format
+	(when (rudel-buffer-document)
+	  (rudel-header-subscriptions--make-format
+	   (rudel-buffer-document))))
+  (force-mode-line-update))
+
+(defun rudel-header-subscriptions--options-changed ()
+  "Update headers in buffers that have header subscriptions mode enabled."
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (when rudel-header-subscriptions-minor-mode
+	(rudel-header-subscriptions--update-from-buffer)))))
+
+
+;;; Header line indication of users' status and activities
+;;
+
+(defun rudel-header-subscriptions--user-change (document user)
+  "Update header line after USER changed."
+  ;; Update the header line to reflect the changes to USER.
+  (rudel-header-subscriptions--update-from-document document))
+
+(defun rudel-header-subscriptions--add-user (document user)
+  "Start monitoring USER and update header line."
+  ;; Monitor USER.
+  (lexical-let ((document document))
+    (object-add-hook user 'change-hook
+		     (lambda (user)
+		       (rudel-header-subscriptions--user-change
+			document user))))
+
+  ;; Update the header line once to get the user added.
+  (rudel-header-subscriptions--update-from-document document)
+  )
+
+(defun rudel-header-subscriptions--remove-user (document user)
+  "Stop monitoring USER and update header line."
+  ;; TODO Stop monitoring USER.
+  ;; (object-remove-hook user 'change-hook
+
+  ;; Update the header line once to get the user removed.
+  (rudel-header-subscriptions--update-from-document document)
+  )
+
+;;;###autoload
+(define-minor-mode rudel-header-subscriptions-minor-mode
+  "Toggle Rudel header subscriptions minor mode.
+
+This mode displays users subscribed to the document associated
+with the buffer in the header-line. Depending on the kind of
+session, additional information like connection status,
+encryption or activity indication may be displayed with each
+user.
+
+If ARG is null, toggle Rudel header subscriptions mode.
+If ARG is a number greater than zero, turn on Rudel header
+subscriptions mode; otherwise, turn it off."
+  :init-value nil
+  :group      'rudel
+  (cond
+   ;; Emacs session is not interactive
+   (noninteractive
+    (setq rudel-header-subscriptions-minor-mode nil))
+
+   ;; Mode is being enabled and the buffer has an attached document.
+   ((and rudel-header-subscriptions-minor-mode
+	 (rudel-buffer-document))
+    (let ((document (rudel-buffer-document)))
+
+      ;; Monitor all users that already are subscribed to the
+      ;; document.
+      (with-slots (subscribed) document
+	(dolist (user subscribed)
+	  (rudel-header-subscriptions--add-user document user)))
+
+      ;; Monitor future (un)subscribe events.
+      (object-add-hook document 'subscribe-hook
+		       #'rudel-header-subscriptions--add-user)
+      (object-add-hook document 'unsubscribe-hook
+		       #'rudel-header-subscriptions--remove-user))
+
+    ;; Update header line.
+    (rudel-header-subscriptions--update-from-buffer))
+
+   ;; Mode is being disabled, but the buffer has an attached document.
+   ((and (not rudel-header-subscriptions-minor-mode)
+	 (rudel-buffer-document))
+    (let ((document (rudel-buffer-document)))
+
+      ;; Stop monitoring all users that are subscribed to the
+      ;; document.
+      (with-slots (subscribed) document
+	(dolist (user subscribed)
+	  (rudel-header-subscriptions--remove-user document user)))
+
+      ;; Stop monitoring (un)subscribe events.
+      (object-remove-hook document 'subscribe-hook
+			  #'rudel-header-subscriptions--add-user)
+      (object-remove-hook document 'unsubscribe-hook
+			  #'rudel-header-subscriptions--remove-user))
+
+    ;; Reset header line to default format.
+    (setq header-line-format default-header-line-format)
+    (force-mode-line-update)) ;; TODO remove all handlers
+
+   ;; No buffer document
+   (t
+    ;; Ensure the mode is disabled.
+    (setq rudel-header-subscriptions-minor-mode nil)
+
+    ;; Reset header line to default format.
+    (setq header-line-format default-header-line-format)
+    (force-mode-line-update)))
+  )
+
+
+;;; Global header subscriptions mode
+;;
+
+;; Tracking stuff for the global mode
+
+(defun rudel-header-subscriptions--attach (document buffer)
+  "Activate header subscriptions mode for BUFFER."
+  (with-current-buffer buffer
+    (rudel-header-subscriptions-minor-mode 1)))
+
+(defun rudel-header-subscriptions--detach (document buffer)
+  "Deactivate header subscriptions mode for BUFFER."
+  (with-current-buffer buffer
+    (rudel-header-subscriptions-minor-mode 0)))
+
+(defun rudel-header-subscriptions--add-document (session document)
+  "Watch DOCUMENT for attach/detach events."
+  ;; When document is attached to a buffer, turn the mode on.
+  (with-slots (buffer) document
+    (when buffer
+      (rudel-header-subscriptions--attach document buffer)))
+
+  ;; Watch document for attaching and detaching.
+  (object-add-hook
+   document 'attach-hook #'rudel-header-subscriptions--attach)
+  (object-add-hook
+   document 'detach-hook #'rudel-header-subscriptions--detach))
+
+(defun rudel-header-subscriptions--remove-document (session document)
+  "Stop watching DOCUMENT for attach/detach events."
+  ;; When document is attached to a buffer, turn the mode off.
+  (with-slots (buffer) document
+    (when buffer
+      (rudel-header-subscriptions--detach document buffer)))
+
+  ;; Stop watching document for attaching and detaching.
+  (object-remove-hook
+   document 'attach-hook #'rudel-header-subscriptions--attach)
+  (object-remove-hook
+   document 'detach-hook #'rudel-header-subscriptions--detach))
+
+(defun rudel-header-subscriptions--session-start (session)
+  "Watch SESSION documents and watch for added/removed documents."
+  ;; Watch all documents in the session.
+  (with-slots (documents) session
+    (dolist (document documents)
+      (rudel-header-subscriptions--add-document session document)))
+
+  ;; Watch session for added/removed documents.
+  (object-add-hook
+   session 'add-document-hook
+   #'rudel-header-subscriptions--add-document)
+  (object-add-hook
+   session 'remove-document-hook
+   #'rudel-header-subscriptions--remove-document)
+  )
+
+(defun rudel-header-subscriptions--session-end (session)
+  "Stop watching SESSION for added/removed documents."
+  ;; Stop watching all documents in the session.
+  (with-slots (documents) session
+    (dolist (document documents)
+      (rudel-header-subscriptions--remove-document session document)))
+
+  ;; Stop watching session for added/removed documents.
+  (object-remove-hook
+   session 'add-document-hook
+   #'rudel-header-subscriptions--add-document)
+  (object-remove-hook
+   session 'remove-document-hook
+   #'rudel-header-subscriptions--remove-document)
+  )
+
+;;;###autoload
+(define-globalized-minor-mode global-rudel-header-subscriptions-mode
+  rudel-header-subscriptions-minor-mode
+  rudel-header-subscriptions-minor-mode
+  :group 'rudel)
+
+(defadvice global-rudel-header-subscriptions-mode
+  (around track-subscriptions activate)
+  "Start/stop tracking subscriptions when the mode is (de)activated."
+  (let ((value ad-do-it))
+    (if value
+
+	;; Add handlers to session start and end hooks and run the
+	;; start handler on already started sessions.
+	(progn
+
+	  ;; Go through all existing sessions.
+	  (mapc #'rudel-header-subscriptions--session-start
+		(when rudel-current-session
+		  (list rudel-current-session)))
+
+	  ;; Watch for new/ended sessions.
+	  (add-hook 'rudel-session-start-hook
+		    #'rudel-header-subscriptions--session-start)
+	  (add-hook 'rudel-session-end-hook
+		    #'rudel-header-subscriptions--session-end))
+
+      ;; Remove handlers from session start and end hooks and run the
+      ;; end handler on active sessions.
+      (mapc #'rudel-header-subscriptions--session-end
+	    (when rudel-current-session
+	      (list rudel-current-session)))
+
+      (remove-hook 'rudel-session-start-hook
+		   #'rudel-header-subscriptions--session-start)
+      (remove-hook 'rudel-session-end-hook
+		   #'rudel-header-subscriptions--session-end)))
+  )
+
+
+;;; Mode line indication of buffer state
+;;
+
+(defvar rudel-mode-line-publish-state-string
+  (propertize
+   "-"
+   'mouse-face 'mode-line-highlight
+   'help-echo  "Buffer is not published")
+  "Contains a mode line fragment indicating the publication state
+of the buffer.")
+(make-variable-buffer-local 'rudel-mode-line-publish-state-string)
+(put 'rudel-mode-line-publish-state-string 'risky-local-variable t)
+
+(defun rudel-mode-line-publish-state--add-indicator-to-mode-line ()
+  "Add Rudel publish state indicator to mode line."
+  (let* ((new-format      (copy-list mode-line-format))
+         (format-rest     (nthcdr
+                           (position 'mode-line-modified mode-line-format)
+                           new-format))
+         (format-rest-cdr (cdr format-rest)))
+    (setcdr format-rest (cons 'rudel-mode-line-publish-state-string
+			      format-rest-cdr))
+    (setq mode-line-format new-format))
+  (force-mode-line-update))
+
+(defun rudel-mode-line-publish-state--remove-indicator-from-mode-line ()
+  "Remove Rudel publish state indicator from mode line."
+  (let ((format-rest (nthcdr
+		      (position 'mode-line-remote mode-line-format)
+		      mode-line-format)))
+    ;; Only change the mode line if our indicator is present.
+    (when (eq (second format-rest) 'rudel-mode-line-publish-state-string)
+      (setcdr format-rest (cddr format-rest))
+      (force-mode-line-update))))
+
+(defun rudel-mode-line-publish-state--update-string ()
+  "Update variable `rudel-mode-line-publish-state-string'."
+  ;; Update `rudel-mode-line-publish-state-string' with appropriate
+  ;; propertized indicator string.
+  (setq rudel-mode-line-publish-state-string
+	(cond
+	 ((rudel-buffer-document)
+	  (propertize
+	   rudel-mode-line-publish-state-published-string
+	   'mouse-face 'mode-line-highlight
+	   'help-echo  "Buffer is published"))
+	 (t
+	  (propertize
+	   rudel-mode-line-publish-state-unpublished-string
+	   'mouse-face 'mode-line-highlight
+	   'help-echo  "Buffer is not published"))))
+
+  ;; Update the mode line.
+  (force-mode-line-update)
+  )
+
+(defun rudel-mode-line-publish-state--document-attach (document buffer)
+  "Handle attaching of DOCUMENT to BUFFER.
+When `rudel-mode-line-publish-state-minor-mode' is enabled in
+BUFFER, update the state string."
+  ;; Only act when BUFFER has the minor mode enabled.
+  (with-current-buffer buffer
+    (when rudel-mode-line-publish-state-minor-mode
+      ;; Update the mode line.
+      (rudel-mode-line-publish-state--update-string)
+
+      ;; Watch for detaching of DOCUMENT from BUFFER.
+      (object-add-hook
+       document 'detach-hook
+       #'rudel-mode-line-publish-state--document-detach)))
+  )
+
+(defun rudel-mode-line-publish-state--document-detach (document buffer)
+  "Handle detaching of DOCUMENT from BUFFER."
+  ;; Update the mode line of BUFFER.
+  (with-current-buffer buffer
+    (rudel-mode-line-publish-state--update-string))
+
+  ;; Stop watching for detaching of DOCUMENT from BUFFER. It (or a
+  ;; different document) has to attach again first, before the next
+  ;; detaching can occur.
+  (object-remove-hook
+   document 'detach-hook
+   #'rudel-mode-line-publish-state--document-detach)
+  )
+
+(defun rudel-mode-line-publish-state--options-changed ()
+  "Update mode lines in buffers that have mode line publish state mode enabled."
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (when rudel-mode-line-publish-state-minor-mode
+	(rudel-mode-line-publish-state--update-string)))))
+
+;;;###autoload
+(define-minor-mode rudel-mode-line-publish-state-minor-mode
+  "Toggle Rudel mode line publish state minor mode.
+
+This mode displays an indicator of the buffer's state with
+respect to an associated Rudel document in the mode line. If the
+buffer has an attached document, the string \"P\" is displayed
+after the remote file indicator. Otherwise, the string \"-\" is
+displayed.
+
+If ARG is null, toggle Rudel mode line publish state minor mode.
+If ARG is a number greater than zero, turn on Rudel minor mode
+line publish state mode; otherwise, turn it off."
+  :init-value nil
+  :group      'rudel
+  (cond
+   ;; Emacs session is not interactive
+   (noninteractive
+    (setq rudel-mode-line-publish-state-minor-mode nil))
+
+   ;; Mode is enabled
+   (rudel-mode-line-publish-state-minor-mode
+    ;; Extend and update the mode line, no matter whether the buffer
+    ;; has a document or not.
+    (rudel-mode-line-publish-state--add-indicator-to-mode-line)
+    (rudel-mode-line-publish-state--update-string)
+
+    ;; Watch document, if available or attach events, when a document
+    ;; is not available.
+    (let ((document (rudel-buffer-document)))
+      (if document
+	  ;; Handle detaching of the document from the buffer.
+	  (object-add-hook
+	   document 'detach-hook
+	   #'rudel-mode-line-publish-state--document-detach)
+	;; Handle attaching of documents to buffers. We use the global
+	;; hook here, installing the handler twice is prevented by
+	;; `add-hook'.
+	(add-hook 'rudel-document-attach-hook
+		  #'rudel-mode-line-publish-state--document-attach))))
+
+   ;; Mode is disabled
+   (t
+    ;; Maybe stop watching for the document detaching from the buffer.
+    (let ((document (rudel-buffer-document)))
+      (when document
+	(object-remove-hook
+	 document 'detach-hook
+	 #'rudel-mode-line-publish-state--document-detach)))
+
+    ;; Remove the indicator from the mode line.
+    (rudel-mode-line-publish-state--remove-indicator-from-mode-line)))
+  )
+
+
+;;; Global mode line publish state mode
+;;
+
+;;;###autoload
+(define-globalized-minor-mode global-rudel-mode-line-publish-state-mode
+  rudel-mode-line-publish-state-minor-mode
+  rudel-mode-line-publish-state-minor-mode
+  :group 'rudel)
+
+
+;;; Global Rudel mode, menu and keymap
+;;
+
+(defvar rudel-minor-keymap
+  (let ((map     (make-sparse-keymap))
+	(sub-map (make-sparse-keymap)))
+    ;; Define sub keymap
+    (define-key sub-map "j" #'rudel-join-session)
+    (define-key sub-map "h" #'rudel-host-session)
+    (define-key sub-map "e" #'rudel-end-session)
+
+    (define-key sub-map "c" #'rudel-change-color)
+
+    (define-key sub-map "p" #'rudel-publish-buffer)
+    (define-key sub-map "u" #'rudel-unpublish-buffer)
+    (define-key sub-map "s" #'rudel-subscribe)
+
+    ;; Bind the sub keymap into map
+    (define-key map "\C-cc" sub-map)
+    map)
+  "Keymap used in Rudel minor mode.")
+
+(when rudel-minor-keymap
+  (easy-menu-define
+    rudel-minor-menu rudel-minor-keymap "Rudel Minor Mode Menu"
+    '("Rudel"
+      [ "Join Session"             rudel-join-session
+	                           (not rudel-current-session) ]
+      [ "Leave Session"            rudel-end-session
+	                           rudel-current-session ]
+      "---"
+      [ "Host a Session"           rudel-host-session
+	                           t ]
+      "---"
+      [ "Change Color"             rudel-change-color
+	                           (and rudel-current-session
+					(rudel-capable-of-p
+					 (oref rudel-current-session :backend)
+					 'change-color)) ] ; TODO bulky
+      "---"
+      [ "Publish current Buffer"   rudel-publish-buffer
+	                           (and rudel-current-session
+					(not (rudel-buffer-has-document-p))) ]
+      [ "Unpublish current Buffer" rudel-unpublish-buffer
+	                           (rudel-buffer-has-document-p) ]
+      [ "Subscribe to Document"    rudel-subscribe
+	                           rudel-current-session ]
+      "---"
+      [ "Rudel Overview"           rudel-speedbar
+	                           t ]
+      "---"
+      ( "Options"
+	[ "Highlight Contributions in Authors' Colors"
+	  (lambda ()
+	    (interactive)
+	    (setq rudel-overlay-author-display
+		  (not rudel-overlay-author-display))
+	    (rudel-overlay-options-changed))
+	  :style    toggle
+	  :selected rudel-overlay-author-display ]
+	( "Show subscribed Users"
+	  [ "In this Buffer"
+	    rudel-header-subscriptions-minor-mode
+	    :style    toggle
+	    :selected rudel-header-subscriptions-minor-mode ]
+	  [ "Globally"
+	    global-rudel-header-subscriptions-mode
+	    :style    toggle
+	    :selected global-rudel-header-subscriptions-mode ] )
+	( "Show Status in mode line"
+	  [ "In this Buffer"
+	    rudel-mode-line-publish-state-minor-mode
+	    :style    toggle
+	    :selected rudel-mode-line-publish-state-minor-mode ]
+	  [ "Globally"
+	    global-rudel-mode-line-publish-state-mode
+	    :style    toggle
+	    :selected global-rudel-mode-line-publish-state-mode ] ) ) )
+    )
+  )
+
+;;;###autoload
+(define-minor-mode global-rudel-minor-mode
+  "Toggle global Rudel minor mode (No modeline indicator).
+
+If ARG is null, toggle global Rudel mode.
+If ARG is a number greater than zero, turn on global Rudel mode;
+otherwise, turn it off."
+  :init-value nil
+  :keymap     rudel-minor-keymap
+  :global     t
+  :group      'rudel
+  (cond
+   ;; Emacs session is not interactive
+   (noninteractive
+    (setq global-rudel-minor-mode nil))
+
+   ;; Mode is enabled
+   (global-rudel-minor-mode
+    )
+
+   ;; Mode is disabled
+   (t
+    ))
+  )
+
+(provide 'rudel-mode)
+;;; rudel-mode.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-operations.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-operations.el.svn-base
new file mode 100644
index 0000000..3637303
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-operations.el.svn-base
@@ -0,0 +1,133 @@
+;;; rudel-operations.el --- Rudel domain operations
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, operations
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains classes representing operations like insertions
+;; and deletions, that are import for Rudel's domain of collaborative
+;; editing.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+
+;;; Class rudel-operation
+;;
+
+(defclass rudel-operation ()
+  ()
+  "Abstract base class for operations."
+  :abstract t)
+
+(defgeneric rudel-apply ((this rudel-operation) object)
+  "Apply the change represented by THIS to OBJECT.")
+
+
+;;; Class rudel-insert-op
+;;
+
+;; TODO should be rudel-insert but there is a method of the same name
+(defclass rudel-insert-op (rudel-operation)
+  ((from :initarg :from
+	 :type    (or null (integer 0))
+	 :documentation
+	 "Start of the region affected by this operation or
+nil. nil means end of buffer")
+   (data :initarg :data
+	 :type    string
+	 :documentation
+	 "The inserted string."))
+  "Objects of this class represent insertion operations.")
+
+(defmethod rudel-apply ((this rudel-insert-op) object)
+  "Apply THIS to OBJECT by inserting the associated data."
+  (with-slots (from data) this
+    (rudel-insert object from data)))
+
+(defmethod slot-missing ((this rudel-insert-op)
+			 slot-name operation &optional new-value)
+  "Simulate read-only slots :length and :to."
+  (cond
+   ;; Slot :length
+   ((and (or (eq slot-name :length)
+	     (eq slot-name 'length))
+	 (eq operation 'oref))
+    (with-slots (data) this
+      (length data)))
+   ;; Slot :to
+   ((and (or (eq slot-name :to)
+	     (eq slot-name 'to))
+	 (eq operation 'oref))
+    (with-slots (from length) this
+      (+ from length)))
+   ;; Call next method
+   (t (call-next-method)))
+  )
+
+
+;;; Class rudel-delete-op
+;;
+
+;; TODO should be rudel-delete but there is a method of the same name
+(defclass rudel-delete-op (rudel-operation)
+  ((from :initarg :from
+	 :type    (integer 0)
+	 :documentation
+	 "Start of the region affected by this operation.")
+   (to   :initarg :to
+	 :type    (integer 0)
+	 :documentation
+	 "End of the region affected by this operation."))
+  "Objects of this class represent deletion operations.")
+
+(defmethod rudel-apply ((this rudel-delete-op) object)
+  "Apply THIS to OBJECT by deleting the associated region."
+  (with-slots (from length) this
+    (rudel-delete object from length)))
+
+(defmethod slot-missing ((this rudel-delete-op)
+			 slot-name operation &optional new-value)
+  "Simulate slot :length"
+  (cond
+   ;; Slot :length
+   ((or (eq slot-name :length)
+	(eq slot-name 'length))
+    (with-slots (from to) this
+      (if (eq operation 'oref)
+	  (- to from)
+	(setq to (+ from new-value)))))
+   ;; Call next method
+   (t (call-next-method)))
+  )
+
+(provide 'rudel-operations)
+;;; rudel-operations.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-operators.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-operators.el.svn-base
new file mode 100644
index 0000000..e51982e
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-operators.el.svn-base
@@ -0,0 +1,172 @@
+;;; rudel-operators.el --- Sets of modification operators for Rudel objects
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, operators
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Collections of operations on specific objects are collected into
+;; classes. Current there are
+;;
+;; - rudel-document-operators: realize operations on document objects
+;;
+;; - rudel-connection-operators: realize operations on connection
+;;   objects
+;;
+;; - rudel-overlay-operators: realize operations by altering the
+;;   overlays of buffer objects
+;;
+;; - rudel-hook-operators: realize operations by calling hooks
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-overlay)
+
+
+;;; Class rudel-document-operators
+;;
+
+(defclass rudel-document-operators ()
+  ((document :initarg  :document
+	     :type     rudel-document-child
+	     :documentation
+	     "Document to which modification operators are
+applied."))
+  "Provides operation methods which modify an associated document.")
+
+(defmethod rudel-insert ((this rudel-document-operators) position data)
+  "Insert DATA at POSITION into the document attached to THIS."
+  (with-slots (document) this
+    (rudel-insert document position data)))
+
+(defmethod rudel-delete ((this rudel-document-operators) position length)
+  "Delete a region of LENGTH characters at POSITION from the document attached to THIS."
+  (with-slots (document) this
+    (rudel-delete document position length)))
+
+
+;;; Class rudel-connection-operators
+;;
+
+(defclass rudel-connection-operators ()
+  ((connection :initarg :connection
+	       :type    rudel-connection-child
+	       :documentation
+	       "Connection on which the operations are
+performed.")
+   (document   :initarg :document
+	       :type    rudel-document-child
+	       :documentation
+	       "Document object to which operations refer."))
+  "Provides operation methods which affect an associated
+connection.")
+
+(defmethod rudel-insert ((this rudel-connection-operators) position data)
+  "Notify the connection associated to THIS of the insertion of DATA at POSITION."
+  (with-slots (connection document) this
+    (rudel-local-insert connection document position data)))
+
+(defmethod rudel-delete ((this rudel-connection-operators) position length)
+  "Notify the connection associated to THIS of a deletion of LENGTH at POSITION."
+  (with-slots (connection document) this
+    (rudel-local-delete connection document position length)))
+
+
+;;; Class rudel-overlay-operators
+;;
+
+(defclass rudel-overlay-operators ()
+  ((document :initarg  :document
+	     :type     rudel-document-child
+	     :documentation
+	     "The document to the overlays of which the
+operations are applied")
+   (user     :initarg  :user
+	     :type     rudel-user-child
+	     :documentation
+	     "The user object associated to operations."))
+  "Provides operation methods which affect the overlays of a
+buffer.")
+
+(defmethod rudel-insert ((this rudel-overlay-operators) position data)
+  "Update the overlays associated to THIS to incorporate an insertion of DATA at POSITION."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+
+      ;; Since we inserted something, (point-max) is at least the
+      ;; length of the insertion + 1. So we can safely subtract the
+      ;; length of the insertion and 1.
+      (unless position
+	(with-current-buffer buffer
+	  (setq position (- (point-max) (length data) 1))))
+	
+
+      (rudel-update-author-overlay-after-insert
+       buffer (+ position 1) (length data) user)))
+  )
+
+(defmethod rudel-delete ((this rudel-overlay-operators) position length)
+  "Update the overlays associated to THIS to incorporate a deletion of LENGTH at POSITION."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+      (rudel-update-author-overlay-after-delete
+       buffer (+ position 1) length user))))
+
+
+;;; Class rudel-hook-operators
+;;
+
+(defclass rudel-hook-operators ()
+  ((document :initarg  :document
+	     :type     rudel-document-child
+	     :documentation
+	     "The document object to which operations refer.")   
+   (user     :initarg  :user
+	     :type     rudel-user-child
+	     :documentation
+	     "The user object associated to operations."))
+  "Provides operation methods which cause corresponding hooks to
+be called.")
+
+(defmethod rudel-insert ((this rudel-hook-operators) position data)
+  "Call insert hook associated to THIS with POSITION and DATA."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+      (run-hook-with-args 'rudel-insert-hook buffer user position data))))
+
+(defmethod rudel-delete ((this rudel-hook-operators) position length)
+  "Call delete hook associated to THIS with POSITION and LENGTH."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+      (run-hook-with-args 'rudel-delete-hook buffer user position length))))
+
+(provide 'rudel-operators)
+;;; rudel-operators.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-overlay.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-overlay.el.svn-base
new file mode 100644
index 0000000..093afdf
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-overlay.el.svn-base
@@ -0,0 +1,275 @@
+;;; rudel-overlay.el --- Overlay functions for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, overlay
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'custom)
+
+(eval-when-compile
+  (require 'cl))
+
+
+;;; Rudel overlay faces
+;;
+
+(defcustom rudel-overlay-author-display t
+  "Indicate authorship by setting text color to user color."
+  :group   'rudel
+  :type    'boolean
+  :set     (lambda (symbol value)
+	     (set-default symbol value)
+	     (when (featurep 'rudel-overlay)
+	       (rudel-overlay-options-changed))))
+
+(put 'rudel-overlay-author-display 'safe-local-variable t)
+
+(defface rudel-author-overlay-face
+  '((default (:background "black")))
+  "*Face used to highlight contributions according to their authors.
+Attributes involving color are not applied literally. Instead the
+color is replaced with the color associated with the respective
+author."
+  :group 'rudel)
+
+
+;;; General overlay functions
+;;
+
+(defun rudel-overlay-p (overlay)
+  "Non-nil if OVERLAY is a Rudel overlay."
+  (overlay-get overlay :rudel))
+
+(defun rudel-overlay-length (overlay)
+  "Distance between end and start of OVERLAY."
+  (- (overlay-end overlay) (overlay-start overlay)))
+
+(defun rudel-overlay-user (overlay)
+  "User object associated to OVERLAY."
+  (overlay-get overlay :user))
+
+(defun rudel-overlays (&optional predicate)
+  "Return a list of Rudel-related overlays or overlays satisfying PREDICATE.
+If PREDICATE is non-nil returned overlays satisfy PREDICATES;
+Otherwise all Rudel-related overlays are returned."
+  (unless predicate
+    (setq predicate #'rudel-overlay-p))
+
+  (let* ((overlay-lists (overlay-lists))
+	 (overlays      (append (car overlay-lists)
+				(cdr overlay-lists))))
+    (remove-if-not predicate overlays))
+  )
+
+(defun rudel-overlays-at (position &optional predicate)
+  "Return a list of Rudel-related overlays at POSITION.
+If PREDICATE is non-nil returned overlays satisfy PREDICATES;
+Otherwise all Rudel-related overlays are returned."
+  (unless predicate
+    (setq predicate #'rudel-overlay-p))
+  (remove-if-not predicate (overlays-at position)))
+
+(defun rudel-overlays-in (start end &optional predicate)
+  "Return a list of Rudel-related overlays in the range START to END.
+If PREDICATE is non-nil returned overlays satisfy PREDICATES;
+Otherwise all Rudel-related overlays are returned."
+  (unless predicate
+    (setq predicate #'rudel-overlay-p))
+  (remove-if-not predicate (overlays-in start end)))
+
+(defun rudel-overlays-remove-all ()
+  "Remove all Rudel overlays from the current buffer."
+  (mapc #'delete-overlay (rudel-overlays)))
+
+
+;;; Author overlay
+;;
+
+(defun rudel-author-overlay-p (overlay)
+  "Predicate for author overlays."
+  (eq (overlay-get overlay :rudel) 'author))
+
+(defun rudel-author-overlays ()
+  "Return the list of author overlays in the current buffer."
+  (rudel-overlays #'rudel-author-overlay-p))
+
+(defun rudel-author-overlay-at (position &optional author)
+  ""
+  (let ((overlays (rudel-overlays-at
+		   position #'rudel-author-overlay-p)))
+    ;; There can only be one rudel overlay at any given position
+    (when overlays
+      (when (or (not author)
+		(eq (rudel-overlay-user (car overlays)) author))
+	(car overlays))))
+  )
+
+(defun rudel-author-overlays-in (start end &optional author)
+  ""
+  (rudel-overlays-in
+   start end
+   (lambda (overlay)
+     (and (rudel-overlay-p overlay)
+	  (or (not author)
+	      (eq (rudel-overlay-user overlay) author)))))
+  )
+
+(defun rudel-make-author-overlay (buffer from to author)
+  "Make and return an overlay for the range FROM to TO in BUFFER suitable for contributions by AUTHOR.
+AUTHOR has to be an object of type rudel-user-child."
+  (let ((overlay (make-overlay from to buffer t)))
+    (rudel-overlay-author-set-properties overlay author)
+    overlay))
+
+(defun rudel-overlay-author-set-properties (overlay author)
+  "Set properties of OVERLAY according to slots of AUTHOR.
+AUTHOR has to be an object of type rudel-user-child."
+  (with-slots ((name :object-name) color) author
+    (overlay-put overlay :rudel     'author)
+    (overlay-put overlay :user      author)
+    (overlay-put overlay 'face      (when rudel-overlay-author-display
+				      (rudel-overlay-make-face
+				       (rudel-overlay-make-face-symbol
+					'author name)
+				       'rudel-author-overlay-face
+				       color)))
+    (overlay-put overlay 'help-echo (when rudel-overlay-author-display
+				      (format "Written by %s" name))))
+  )
+
+(defun rudel-overlay-author-update (overlay)
+  "Update properties of OVERLAY from its attached user object."
+  (let ((author (rudel-overlay-user overlay)))
+    (rudel-overlay-author-set-properties overlay author)))
+
+
+;;; Update functions for author overlays
+;;
+
+(defun rudel-update-author-overlay-after-insert (buffer position length author)
+  "Update author overlays in BUFFER to incorporate an insertion of length LENGTH at POSITION by AUTHOR.
+POSITION refers to an Emacs buffer position.
+AUTHOR has to be an object of type rudel-author-child."
+  (when author
+    (with-current-buffer buffer
+      (let* ((end    (+ position length))
+	     (before (when (> position 1)
+		       (rudel-author-overlay-at (- position 1) author)))
+	     (at     (rudel-author-overlay-at position))
+	     (after  (when (< end (point-max))
+		       (rudel-author-overlay-at (+ end 1) author))))
+	(cond
+	 ;; If there is an overlay, we have to split it unless the
+	 ;; author is AUTHOR or we are on its boundary.
+	 (at
+	  (unless (eq (rudel-overlay-user at) author)
+	    (let* ((on-start (= (overlay-start at) position))
+		   (on-end   (= (- (overlay-end at) 1) position))
+		   (before (unless on-start
+			     (if on-end at (copy-overlay at))))
+		   (after  (unless on-end at)))
+	      (when before
+		(move-overlay before (overlay-start before) position))
+	      (when after
+		(move-overlay after end (overlay-end after)))
+	      (rudel-make-author-overlay buffer position end author))))
+	 ;; There is no overlay under the insert, but there are
+	 ;; overlays of the same author immediately before and after
+	 ;; the insert. We merge these two into one large overlay
+	 ;; including the insert.
+	 ((and before after)
+	  (let ((end (overlay-end after)))
+	    (delete-overlay after)
+	    (move-overlay before (overlay-start before) end)))
+	 ;; If there is an overlay of the same author before the
+	 ;; insert, we extend it.
+	 (before
+	  (move-overlay before (overlay-start before) end))
+	 ;; If there is an overlay of the same author after the
+	 ;; insert, we extend it.
+	 (after
+	  (move-overlay after position (overlay-end after)))
+	 ;; If there are no overlays at all, we create a suitable one.
+	 (t
+	  (rudel-make-author-overlay buffer position end author))))))
+  )
+
+(defun rudel-update-author-overlay-after-delete (buffer position length author)
+  "Update author overlays in BUFFER to incorporate a deletion of length LENGTH at POSITION by AUTHOR.
+POSITION refers to an Emacs buffer position.
+AUTHOR has to be an object of type rudel-author-child."
+  (with-current-buffer buffer
+    (mapc
+     (lambda (overlay)
+       (when (zerop (rudel-overlay-length overlay))
+	 (delete-overlay overlay)))
+     (rudel-author-overlays-in position position)))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-overlay-make-face-symbol (category name)
+  "Allocate a symbol for a face for CATEGORY and NAME."
+  (intern (format "rudel-%s-overlay-%s-face"
+		  (if (stringp category)
+		      category
+		    (symbol-name category))
+		  name)))
+
+(defun rudel-overlay-make-face (face template color)
+  "Copy TEMPLATE to FACE and replace color attributes with COLOR.
+TEMPLATE has to be a face. FACE can be nil or a face. In the
+latter case, FACE is returned unmodified."
+  (unless (facep face)
+    (make-face face)
+    (copy-face template face)
+    (rudel-overlay-set-face-attributes face color))
+  face)
+
+(defun rudel-overlay-set-face-attributes (face color)
+  "Set color-related attributes of FACE with respect to COLOR."
+  (when (facep face)
+    (dolist (property '(:foreground :background :underline :overline))
+      (unless (eq (face-attribute face property) 'unspecified)
+	(set-face-attribute face nil property color)))))
+
+(defun rudel-overlay-options-changed ()
+  "Update Rudel overlays after a change of customization options."
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (mapc #'rudel-overlay-author-update (rudel-overlays)))))
+
+(provide 'rudel-overlay)
+;;; rudel-overlay.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-protocol.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-protocol.el.svn-base
new file mode 100644
index 0000000..c60718c
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-protocol.el.svn-base
@@ -0,0 +1,83 @@
+;;; rudel-protocol.el --- Interface implemented by Rudel protocol backends
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, backend, protocol
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the interface for Rudel protocol backends.  This
+;; interface consists of the following functions:
+;;
+;; + joining sessions
+;;   + `rudel-ask-join-info'
+;;   + `rudel-join'
+;; + hosting sessions
+;;   + `rudel-ask-host-info'
+;;   + `rudel-host'
+;; + factory functions
+;;   + `rudel-make-document'
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-backend)
+
+
+;;; Class rudel-protocol-backend
+;;
+
+(defclass rudel-protocol-backend (rudel-backend)
+  ()
+  "Interface implemented by protocol backends."
+  :abstract t)
+
+(defgeneric rudel-ask-join-info ((this rudel-protocol-backend))
+  "Retrieve information for joining a session from user.
+Return a property list that contains the collected information.")
+
+(defgeneric rudel-join ((this rudel-protocol-backend) info)
+  "Create a new connection according to the data in the property list INFO.
+Implementations can rely on the fact that the property :session
+contains the `rudel-session' object to which the new connection
+will be associated.")
+
+(defgeneric rudel-ask-host-info ((this rudel-protocol-backend))
+  "Retrieve information for hosting a session from user.
+Return a property list that contains the collected information.")
+
+(defgeneric rudel-host ((this rudel-protocol-backend) info)
+  "Create a new session according to the property list INFO.")
+
+(defgeneric rudel-make-document ((this rudel-protocol-backend)
+				 name session)
+  "Create a new document object named NAME for SESSION.")
+
+(provide 'rudel-protocol)
+;;; rudel-protocol.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-session-initiation.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-session-initiation.el.svn-base
new file mode 100644
index 0000000..395ab07
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-session-initiation.el.svn-base
@@ -0,0 +1,352 @@
+;;; rudel-session-initiation.el --- Session discovery and advertising functions
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, session, initiation, service, discovery, advertising
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Interfaces for session initiation and discovery.
+;;
+;; The central interface is
+;; `rudel-session-initiation-backend'. Backends implementing this
+;; interface can provide methods to discover sessions, to advertise
+;; sessions, or both.
+;;
+;; The client programming interface consists of a priority which is
+;; one of:
+;;
+;; + `primary'
+;; + `fallback'
+;;
+;; and the following functions:
+;;
+;; + `rudel-session-initiation-discover'
+;; + `rudel-session-initiation-advertise'
+;; + `rudel-session-initiation-withdraw'
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel-backend)
+
+
+;;; Customization options
+;;
+
+(defcustom rudel-configured-sessions nil
+  "List of configured sessions.
+
+Each session is described as a plist (a list of keys and values
+see Info node `(elisp)Property Lists'). Keys are specified using
+keywords and look like this: :host, :username, :color. Values are
+mostly strings, but symbols and numbers are possible as well.
+
+The following keys are required for any session:
+
+* :name    (string)
+* :backend (string or symbol)
+
+Other keys are optional and depend on the selected
+backend. Required keys for which no value is specified will be
+prompted for when selecting the session. The values of the :name
+properties have to be distinct for all configured sessions.
+
+Additional keys required by most backends:
+
+* :host     (string)
+* :port     (number)
+* :username (string)
+* :color    (string)
+
+Here is a complete example of customized values for the obby
+backend:
+
+* :name            \"sonian\"
+* :backend         obby
+* :host            \"sobby\"
+* :port            6522
+* :encryption      t
+* :username        \"phil\"
+* :color           \"white\"
+* :global-password \"\"             (this means \"no password\")
+* :user-password   \"\"
+
+The programmatic equivalent looks like this:
+
+(add-to-list 
+ 'rudel-configured-sessions
+ (list :name            \"myserver\"
+       :backend         'obby
+       :host            \"my.sobby-server.net\"
+       :username        user-login-name
+       ;; Use M-x list-colors-display to see color choices.
+       :color           \"white\"
+       :encryption      t 
+       :port            6522
+       ;; empty string means no password
+       :global-password \"\"
+       :user-password   \"\"))"
+  :group 'rudel
+  :type  '(repeat :tag "Connections"
+		  (plist :tag "Connection"
+			 :options ((:name     string)
+				   (:backend  symbol)
+				   (:username string)
+				   (:color    color))))
+  )
+
+
+;;; Variables and constants
+;;
+
+(defvar rudel-session-discovered-hook nil
+  "This hook is run when collaboration sessions are discovered.")
+
+(defvar rudel-session-vanished-hook nil
+  "This hook is run when previously discovered collaboration
+session disappear.")
+
+
+;;; Class rudel-session-initiation-backend
+;;
+
+(defclass rudel-session-initiation-backend (rudel-backend)
+  ((priority :initarg  :priority
+	     :type     symbol
+	     :accessor rudel-priority
+	     :documentation
+	     "Priority of the session initiation method
+implemented by this backend. Has to be either 'primary or
+'fallback"))
+  "Interface implemented by session initiation backends."
+  :abstract t)
+
+(defgeneric rudel-discover ((this rudel-session-initiation-backend))
+  "Return a list of discovered sessions.
+Each list element is a connect info property list. See
+`rudel-join-session' for a description of the format of this
+list.
+
+The presence of an implementation of this generic function should
+be indicated by the presence of the 'discover' capability.")
+
+(defgeneric rudel-advertise ((this rudel-session-initiation-backend) info)
+  "Advertise session described by INFO.
+INFO is a connect info property list. See `rudel-host-session'
+for a description of the format of this list.
+
+The presence of an implementation of this generic function should
+be indicated by the presence of the 'advertise' capability.")
+
+
+;;; Client programming interface functions.
+;;
+
+(defun rudel-session-initiation-suitable-backends (capability)
+  "Return primary and fallback backends that have CAPABILITY.
+The returned list is of the form (PRIMARY FALLBACK), where
+PRIMARY and FALLBACK are lists of backends of the respective
+priority."
+  (let* (;; Select all backends, which can discover sessions
+	 (suitable-backends (rudel-backend-suitable-backends
+			     'session-initiation
+			     (lambda (backend)
+			       (rudel-capable-of-p backend capability))))
+	 ;; Select primary backends
+	 (primary-backends  (remove*
+			     'fallback suitable-backends
+			     :key (lambda (backend)
+				    (rudel-priority (cdr backend)))))
+	 ;; Select fallback backends
+	 (fallback-backends (remove*
+			     'primary suitable-backends
+			     :key (lambda (backend)
+				    (rudel-priority (cdr backend))))))
+    (list primary-backends fallback-backends))
+  )
+
+(defun rudel-session-initiation-discover (&optional backend-name)
+  "Return a list of session using BACKEND-NAME when non-nil.
+BACKEND-NAME is a symbol. When it is non-nil, only the specified
+backend is used to discover session.
+
+The returned list is of the form (INFO-1 ... INFO-N FALLBACK-1
+... FALLBACK-M) where INFO-I are connect info property lists (see
+`rudel-join-session') and FALLBACK-I are conses of the form (NAME
+. CLASS-OR-OBJECT) that specify fallback backends."
+  (multiple-value-bind (primary-backends fallback-backends)
+      (rudel-session-initiation-suitable-backends 'discover)
+    ;; Retrieve session list from primary backend and fall back to
+    ;; fallback backends if the list is empty.
+    (if backend-name
+	(let ((backend (find backend-name fallback-backends :key #'car)))
+	  (rudel-discover (cdr backend)))
+      (let ((primary-results
+	     (remove-if #'null
+			(apply #'append
+			       (mapcar #'rudel-discover
+				       (mapcar #'cdr primary-backends))))))
+	(append primary-results fallback-backends))))
+  )
+
+(defun rudel-session-initiation-advertise (info)
+  "Advertise the session described by INFO.
+INFO is a connect info property list. See `rudel-host-session'
+for a description of the format of this list.
+
+Primary backends are tried first. If none succeeds, fallback
+backends are tried.
+
+The result is non-nil if at least one backend was able to
+advertise the session."
+  (multiple-value-bind (primary-backends fallback-backends)
+      (rudel-session-initiation-suitable-backends 'advertise)
+    (or ;; Try to advertise the session using primary backends.
+        (some (mapcar (lambda (backend)
+			(rudel-advertise backend info))
+		      (mapcar #'cdr primary-backends)))
+	;; When the primary backends fail, try to advertise the
+	;; session using fallback backends
+	(some (mapcar (lambda (backend)
+			(rudel-advertise backend info))
+		      (mapcar #'cdr fallback-backends)))))
+  )
+
+
+;;; Class rudel-ask-protocol-backend
+;;
+
+(defconst rudel-ask-protocol-version '(0 1)
+  "Version of the ask-protocol backend for Rudel.")
+
+;;;###autoload
+(defclass rudel-ask-protocol-backend (rudel-session-initiation-backend)
+  ((capabilities :initform (discover))
+   (priority     :initform fallback))
+  "This fallback backend can \"discover\" sessions by letting the
+user select a suitable backend and asking for connect information
+required by the chosen backend.")
+
+(defmethod initialize-instance ((this rudel-ask-protocol-backend)
+				&rest slots)
+  "Set backend version."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-ask-protocol-version))
+
+(defmethod rudel-discover ((this rudel-ask-protocol-backend))
+  "\"Discover\" sessions by asking the user about the backend to use and the connect info."
+  (let ((backend (rudel-backend-choose
+		  'protocol
+		  (lambda (backend)
+		    (rudel-capable-of-p backend 'join)))))
+    (list (append (list :name    "asked"
+			:backend backend)
+		  (rudel-ask-connect-info (cdr backend)))))
+  )
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'session-initiation)
+		   'ask-protocol 'rudel-ask-protocol-backend)
+
+
+;;; Class rudel-configured-sessions-backend
+;;
+
+(defconst rudel-configured-sessions-version '(0 1)
+  "Version of the configured-sessions backend for Rudel.")
+
+;;;###autoload
+(defclass rudel-configured-sessions-backend
+  (rudel-session-initiation-backend)
+  ((capabilities :initform (discover))
+   (priority     :initform primary))
+  "This fallback backend can \"discover\" sessions the user has
+configured using customization.")
+
+(defmethod initialize-instance ((this rudel-configured-sessions-backend)
+				&rest slots)
+  "Set backend version."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-configured-sessions-version))
+
+(defmethod rudel-discover ((this rudel-configured-sessions-backend))
+  "\"Discover\" sessions the has configured."
+  ;; Iterate over all configured sessions in order to make
+  ;; adjustments.
+  (mapcar #'rudel-session-initiation-adjust-info
+	  rudel-configured-sessions))
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'session-initiation)
+		   'configured-sessions 'rudel-configured-sessions-backend)
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-session-initiation-adjust-info (info)
+  "Resolve arguments that need resolving in INFO."
+  ;; Start with a new, empty property list.
+  (let ((adjusted-info)
+	(key   (car  info))
+	(value (cadr info))
+	(rest  info))
+    ;; Iterate over all properties in INFO.
+    (while rest
+      (setq rest (cddr rest))
+      (cond
+       ;; Resolve backend arguments.
+       ((eq key :backend)
+	(let ((backend (rudel-backend-get 'protocol
+					  (if (stringp value)
+					      (intern value)
+					    value))))
+	  (push backend adjusted-info)
+	  (push key     adjusted-info)))
+       ;; Keep other arguments unmodified.
+       (t
+	(push value adjusted-info)
+	(push key   adjusted-info)))
+      ;; Advance to next key value pair.
+      (setq key   (car  rest)
+	    value (cadr rest)))
+    ;; Return the transformed session information.
+    adjusted-info)
+  )
+
+(provide 'rudel-session-initiation)
+;;; rudel-session-initiation.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-speedbar.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-speedbar.el.svn-base
new file mode 100644
index 0000000..8c2caa8
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-speedbar.el.svn-base
@@ -0,0 +1,214 @@
+;;; rudel-speedbar.el --- Speedbar rendering of Rudel objects
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, collaboration, speedbar
+;; X-RCS: $Id: rudel-speedbar.el,v 1.32 2008/10/10 21:47:28 zappo Exp $
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+;;; Commentary:
+;;
+;; This implements rendering of Rudel objects in speedbar.
+
+
+;;;  History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'speedbar)
+(require 'eieio-speedbar)
+
+
+;;; Class rudel-user methods
+;;
+
+(defmethod eieio-speedbar-description ((this rudel-user))
+  "Provide a speedbar description for OBJ."
+  (format "User %s" (object-name-string this)))
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-user))
+  "Return a string to use as a speedbar button for OBJECT."
+  (format "%s" (object-name-string this)))
+
+
+;;; Class rudel-document methods
+;;
+
+(defmethod eieio-speedbar-description ((this rudel-document))
+  "Construct a description for from the name of document object THIS."
+  (format "Document %s" (object-name-string this)))
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-document))
+  "Return a string to use as a speedbar button for OBJECT."
+  (rudel-unique-name this))
+
+;;; Speedbar support mode
+;;
+(defun rudel-speedbar-make-map ()
+  "Make the generic object based speedbar keymap."
+  (speedbar-make-specialized-keymap))
+
+(defvar rudel-speedbar-key-map
+  (rudel-speedbar-make-map)
+  "A Generic object based speedbar display keymap.")
+
+(defvar rudel-speedbar-menu
+  '([ "Compile" rudel-speedbar-compile-line t])
+  "Menu part in easymenu format used in speedbar while browsing objects.")
+
+(defun rudel-speedbar-toplevel-buttons (dir)
+  "Return a list of objects to display in speedbar.
+Argument DIR is the directory from which to derive the list of objects."
+  (when rudel-current-session
+    (with-slots (users documents) rudel-current-session
+      (append users documents))))
+
+(eieio-speedbar-create 'rudel-speedbar-make-map
+		       'rudel-speedbar-key-map
+		       'rudel-speedbar-menu
+		       "Collaboration Session"
+		       'rudel-speedbar-toplevel-buttons)
+
+;;;###autoload
+(defun rudel-speedbar ()
+  "Show connected users and available documents of Rudel session in speedbar."
+  (interactive)
+  (speedbar-frame-mode 1)
+  (speedbar-change-initial-expansion-list "Collaboration Session")
+  (speedbar-get-focus))
+
+;;; Speedbar Project Methods
+;;
+;; (defun rudel-find-nearest-file-line ()
+;;   "Go backwards until we find a file."
+;;   (save-excursion
+;;     (beginning-of-line)
+;;     (looking-at "^\\([0-9]+\\):")
+;;     (let ((depth (string-to-number (match-string 1))))
+;;       (while (not (re-search-forward "[]] [^ ]"
+;; 				     (save-excursion (end-of-line)
+;; 						     (point))
+;; 				     t))
+;; 	(re-search-backward (format "^%d:" (1- depth)))
+;; 	(setq depth (1- depth)))
+;;       (speedbar-line-token))))
+;;
+;; (defmethod eieio-speedbar-derive-line-path ((obj rudel-session) &optional depth)
+;;   "Return the path to OBJ.
+;; Optional DEPTH is the depth we start at."
+;;   "session" ;(file-name-directory (oref obj file))
+;;   )
+;;
+;; (defmethod eieio-speedbar-derive-line-path ((obj rudel-session) &optional depth)
+;;   "Return the path to OBJ.
+;; Optional DEPTH is the depth we start at."
+;;   (let ((proj (rudel-target-parent obj)))
+;;     ;; Check the type of line we are currently on.
+;;     ;; If we are on a child, we need a file name too.
+;;     (save-excursion
+;;       (let ((lt (speedbar-line-token)))
+;; 	(if (or (eieio-object-p lt) (stringp lt))
+;; 	    (eieio-speedbar-derive-line-path proj)
+;; 	  ;; a child element is a token.  Do some work to get a filename too.
+;; 	  (concat (eieio-speedbar-derive-line-path proj)
+;; 		  (rudel-find-nearest-file-line)))))))
+;;
+;; (defmethod eieio-speedbar-description ((obj rudel-session))
+;;   "Provide a speedbar description for OBJ."
+;;   "bla") ;(rudel-description obj))
+;;
+;;
+;; (defmethod eieio-speedbar-object-buttonname ((object rudel-project))
+;;   "Return a string to use as a speedbar button for OBJECT."
+;;   (if (rudel-parent-project object)
+;;       (rudel-name object)
+;;     (concat (rudel-name object) " " (oref object version))))
+;;
+;;
+;; (defmethod eieio-speedbar-object-children ((this rudel-project))
+;;   "Return the list of speedbar display children for THIS."
+;;   (condition-case nil
+;;       (with-slots (subproj targets) this
+;; 	(append subproj targets))
+;;     (error nil)))
+;;
+;;
+;; ;;; Generic file management for TARGETS
+;; ;;
+;; (defun rudel-file-find (text token indent)
+;;   "Find the file TEXT at path TOKEN.
+;; INDENT is the current indentation level."
+;;   (speedbar-find-file-in-frame
+;;    (expand-file-name token (speedbar-line-directory indent)))
+;;   (speedbar-maybee-jump-to-attached-frame))
+;;
+;; (defun rudel-create-tag-buttons (filename indent)
+;;   "Create the tag buttons associated with FILENAME at INDENT."
+;;   (let* ((lst (speedbar-fetch-dynamic-tags filename)))
+;;     ;; if no list, then remove expando button
+;;     (if (not lst)
+;; 	(speedbar-change-expand-button-char ??)
+;;       (speedbar-with-writable
+;; 	;; We must do 1- because indent was already incremented.
+;; 	(speedbar-insert-generic-list (1- indent)
+;; 				      lst
+;; 				      'rudel-tag-expand
+;; 				      'rudel-tag-find)))))
+;;
+;; (defun rudel-tag-expand (text token indent)
+;;   "Expand a tag sublist.  Imenu will return sub-lists of specialized tag types.
+;; Etags does not support this feature.  TEXT will be the button
+;; string.  TOKEN will be the list, and INDENT is the current indentation
+;; level."
+;;   (cond ((string-match "+" text)	;we have to expand this file
+;; 	 (speedbar-change-expand-button-char ?-)
+;; 	 (speedbar-with-writable
+;; 	   (save-excursion
+;; 	     (end-of-line) (forward-char 1)
+;; 	     (speedbar-insert-generic-list indent token
+;; 					   'rudel-tag-expand
+;; 					   'rudel-tag-find))))
+;; 	((string-match "-" text)	;we have to contract this node
+;; 	 (speedbar-change-expand-button-char ?+)
+;; 	 (speedbar-delete-subblock indent))
+;; 	(t (error "Ooops...  not sure what to do")))
+;;   (speedbar-center-buffer-smartly))
+;;
+;; (defun rudel-tag-find (text token indent)
+;;   "For the tag TEXT in a file TOKEN, goto that position.
+;; INDENT is the current indentation level."
+;;   (let ((file (rudel-find-nearest-file-line)))
+;;     (speedbar-find-file-in-frame file)
+;;     (save-excursion (speedbar-stealthy-updates))
+;;     ;; Reset the timer with a new timeout when cliking a file
+;;     ;; in case the user was navigating directories, we can cancel
+;;     ;; that other timer.
+;; ;    (speedbar-set-timer speedbar-update-speed)
+;;     (goto-char token)
+;;     (run-hooks 'speedbar-visiting-tag-hook)
+;;     ;;(recenter)
+;;     (speedbar-maybee-jump-to-attached-frame)
+;;     ))
+
+(provide 'rudel-speedbar)
+
+;;; rudel-speedbar.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-state-machine.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-state-machine.el.svn-base
new file mode 100644
index 0000000..d96bcc7
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-state-machine.el.svn-base
@@ -0,0 +1,331 @@
+;;; rudel-state-machine.el --- A simple state machine for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, FSM
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This is a simple implementation of a finite state machine
+;; (FSM). The is modeled by rudel-state-machine class, objects of
+;; which contain state objects of classes derived from
+;; rudel-state. There are no explicit transition rules, since states
+;; specify their successors.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel-errors)
+(require 'rudel-compat) ;; for pulsing progress reporter
+
+
+;;; Errors related to the state machine
+;;
+
+;; rudel-state-error
+
+(intern "rudel-state-error")
+
+(put 'rudel-state-error 'error-conditions
+     '(error
+       rudel-error rudel-state-error))
+
+(put 'rudel-state-error 'error-message
+     "Invalid state or state transition")
+
+;; rudel-invalid-successor-state
+
+(intern "rudel-invalid-successor-state")
+
+(put 'rudel-invalid-successor-state 'error-conditions
+     '(error
+       rudel-error rudel-state-error rudel-invalid-successor-state))
+
+(put 'rudel-invalid-successor-state 'error-message
+     "Invalid successor state in state transition")
+
+;; rudel-entered-error-state
+
+(intern "rudel-entered-error-state")
+
+(put 'rudel-entered-error-state 'error-conditions
+     '(error
+       rudel-error rudel-state-error rudel-entered-error-state))
+
+(put 'rudel-entered-error-state 'error-message
+     "Transition to error state")
+
+;; rudel-no-start-state
+
+(intern "rudel-no-start-state")
+
+(put 'rudel-no-start-state 'error-conditions
+     '(error
+       rudel-error rudel-state-error rudel-no-start-state))
+
+(put 'rudel-no-start-state 'error-message
+     "No start state specified for state machine")
+
+
+;;; Class rudel-state
+;;
+
+(defclass rudel-state ()
+  ()
+  "A state that can be used in state machines."
+  :abstract t)
+
+(defgeneric rudel-accept ((this rudel-state) &rest arguments)
+  "Executed when the machine receives an event while in state THIS.")
+
+(defgeneric rudel-enter ((this rudel-state) &rest arguments)
+  "Executed when the machine switches to state THIS.")
+
+(defgeneric rudel-leave ((this rudel-state))
+  "Executed when the machine leaves state THIS.")
+
+
+;;; Class rudel-state-machine
+;;
+
+(defclass rudel-state-machine ()
+  ((states :initarg  :states
+	   :type     list ;; alist
+	   :initform nil
+	   :documentation
+	   "A list (NAME . STATE) conses where NAME is a symbol
+and STATE is an object of a class derived from rudel-state.")
+   (state  :initarg  :state
+	   :type     rudel-state-child
+	   :documentation
+	   "The current state of the machine."))
+  "A finite state machine.")
+
+(defmethod initialize-instance :after ((this rudel-state-machine)
+				       &rest slots)
+  "Set current state of THIS to a proper initial value.
+If a start state is specified in the arguments to the
+constructor, that state is used. If there is no such state, the
+list of states is search for a state named start. If that fails
+as well, the first state in the state list is used."
+  (with-slots (states) this
+    ;; Find a suitable start state and switch to it.
+    (let ((start (or (plist-get slots :start)
+		     (car (assoc 'start states))
+		     (when (length states)
+		       (car (nth 0 states))))))
+      (unless start
+	(signal 'rudel-no-start-state nil))
+      ;; Make start state the current state and call send an enter
+      ;; message.
+      (let ((start (cdr (assoc start states))))
+	(oset this :state start)
+	(rudel--switch-to-return-value
+	 this start (rudel-enter start)))))
+  )
+
+(defmethod rudel-find-state ((this rudel-state-machine) name)
+  "Return state object for symbol NAME."
+  (with-slots (states) this
+    (cdr (assoc name states))))
+
+(defmethod rudel-register-state ((this rudel-state-machine) name state)
+  "Register STATE and its NAME with THIS state machine."
+  (object-add-to-list this :states (cons name state) t))
+
+(defmethod rudel-register-states ((this rudel-state-machine) states)
+  "Register STATES with THIS state machine.
+STATES is a list of cons cells whose car is a symbol - the name
+of the state - and whose cdr is a class."
+  (dolist (symbol-and-state states)
+    (destructuring-bind (name . class) symbol-and-state
+      (rudel-register-state
+       this name (make-instance class (symbol-name name)))))
+  )
+
+(defmethod rudel-current-state ((this rudel-state-machine) &optional object)
+  "Return name and, optionally, state object of the current state of THIS.
+If OBJECT is non-nil, (NAME . OBJECT) is returned. Otherwise,
+just NAME."
+  (with-slots (states state) this
+    (let ((state-symbol (car (find state states :key #'cdr :test #'eq))))
+      (if object
+	  (cons state-symbol state)
+	state-symbol)))
+  )
+
+(defmethod rudel-accept ((this rudel-state-machine) &rest arguments)
+  "Process an event described by ARGUMENTS."
+  (with-slots (state) this
+    ;; Let the current state decide which state is next.
+    (let ((next (apply #'rudel-accept state arguments)))
+      (cond
+       ;; If NEXT is nil, a symbol or a state object, we switch states
+       ;; without passing any data.
+       ((or (null next) (symbolp next) (rudel-state-child-p next))
+	(rudel-switch this next))
+
+       ;; If NEXT is a list, it contains the symbol of the successor
+       ;; state and additional data.
+       ((listp next)
+	(apply #'rudel-switch this next))
+
+       ;; Other types cannot be processed.
+       (t
+	(signal 'wrong-type-argument (list (type-of next)))))))
+  )
+
+(defmethod rudel-switch ((this rudel-state-machine) next
+			 &rest arguments)
+  "Leave current state and switch to state NEXT.
+ARGUMENTS are passed to the `rudel-enter' method of the successor
+state."
+  (with-slots (states state) this
+    (cond
+     ;; When NEXT is a state object, use it.
+     ((rudel-state-child-p next))
+
+     ;; When NEXT is nil, stay in the current state.
+     ((null next)
+      (setq next state))
+
+     ;; When NEXT is a symbol (but not nil), look up the corresponding
+     ;; state. Signal an error, if there is none.
+     ((symbolp next)
+      (let ((next-state (assoc next states)))
+	(unless next-state
+	  (signal 'rudel-invalid-successor-state
+		  (list next '<- state)))
+	(setq next (cdr next-state))))
+
+     ;; Other types cannot be processed.
+     (t
+      (signal 'wrong-type-argument (list (type-of next)))))
+
+    ;; Unless the successor state is equal to the current state, leave
+    ;; the current state and switch to the successor.
+    (if (and (eq state next)
+	     (null arguments))
+	;; Return state
+	state
+      ;; Notify (old) current state.
+      (rudel-leave state)
+      ;; Update current state.
+      (setq state next)
+      ;; Notify (new) current state. Using the call's value as next
+      ;; state is a bit dangerous since a long sequence of immediate
+      ;; state switches could exhaust the stack.
+      (rudel--switch-to-return-value
+       this state (apply #'rudel-enter state arguments))))
+  )
+
+(defmethod rudel--switch-to-return-value ((this rudel-state-machine)
+					  state next)
+  "Switch from STATE to the next state indicated by NEXT.
+STATE is the current state.
+NEXT can nil, a list or a `rudel-state' object."
+  (cond
+   ;; Remain in current state.
+   ((null next)
+    state)
+   ;; NEXT contains next state and arguments to pass to it when
+   ;; switching.
+   ((listp next)
+    (apply #'rudel-switch this next))
+   ;; Otherwise NEXT is a `rudel-state' object.
+   (t
+    (rudel-switch this next)))
+  )
+
+(defmethod object-print ((this rudel-state-machine) &rest strings)
+  "Add current state to the string representation of THIS."
+  (if (slot-boundp this 'state)
+      (with-slots (state) this
+	(apply #'call-next-method
+	       this
+	       (format " state: %s"
+		       (object-name-string state))
+	       strings))
+    (call-next-method this " state: #start"))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-state-wait (machine success-states
+			 &optional error-states callback)
+  "Repeatedly call CALLBACK until MACHINE is in a state in SUCCESS-STATES or ERROR-STATES.
+MACHINE should be of type rudel-state-machine-child or at least
+have a method `rudel-get-state'.
+
+SUCCESS-STATES and ERROR-STATES are lists which contain the
+names (as symbols) of success and error states respectively.
+This function does not return when MACHINE enters states not in
+SUCCESS-STATES or ERROR-STATES. As a result, a deadlock can occur
+when MACHINE deadlocks or cycles through states not in either
+list infinitely.
+
+When non-nil, CALLBACK has to be a function that accepts one
+argument of the form (SYMBOL . STATE) where SYMBOL is the name
+symbol of the current state and STATE is the state object."
+  ;; Wait until MACHINE enter a state in SUCCESS-STATES or
+  ;; ERROR-STATES.
+  (let ((result
+	 (catch 'state-wait
+	   (while t
+	     ;; Retrieve current state.
+	     (destructuring-bind (symbol . state)
+		 (rudel-current-state machine t)
+
+	       ;; Check against success and error states.
+	       (when (memq symbol success-states)
+		 (throw 'state-wait (cons 'success (cons symbol state))))
+	       (when (memq symbol error-states)
+		 (throw 'state-wait (cons 'error   (cons symbol state))))
+
+	       ;; Update progress indicator and sleep.
+	       (when callback
+		 (funcall callback (cons symbol state)))
+	       (sleep-for 0.05))))))
+    (when callback
+      (funcall callback t))
+
+    ;; If MACHINE ended up in an error state, signal
+    (unless (eq (car result) 'success)
+      (signal 'rudel-entered-error-state (cdr result)))
+    ;; Return state
+    (cdr result))
+  )
+
+(provide 'rudel-state-machine)
+;;; rudel-state-machine.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-tls.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-tls.el.svn-base
new file mode 100644
index 0000000..a770851
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-tls.el.svn-base
@@ -0,0 +1,201 @@
+;;; rudel-tls.el --- Start TLS protocol.
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, TLS, encryption, starttls, gnutls
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This contains a simple implementation of the so calls Start TLS
+;; protocol, which means enabling TLS encryption for an existing
+;; network connection.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'format-spec)
+
+(require 'rudel)
+(require 'rudel-util)
+
+
+;;; Customization
+;;
+
+(defcustom rudel-tls-client-program
+  "gnutls-cli"
+  "The gnutls client program to use for encrypted connections."
+  :group 'rudel
+  :type  'file)
+
+(defcustom rudel-tls-client-arguments
+  "--starttls --kx ANON_DH --port %p %h"
+  "Arguments passed to the gnutls client program."
+  :group 'rudel
+  :type  'string)
+
+
+;;; TLS functions
+;;
+
+(defun rudel-tls-make-process (&rest args)
+  "Make a network process with keyword arguments ARGS.
+This function works similar to `make-network-process'. Supported
+keyword arguments are :name (ignore), :host, :port, :filter
+and :sentinel. The returned process object is suitable for
+start-TLS. Once the enclosing protocol indicates TLS encryption
+should start, `rudel-tls-start-tls' can be called to enabled TLS
+for the network connection."
+  (let* ((host      (plist-get args :host)) ;; TODO clumsy
+	 (port      (plist-get args :service))
+	 (filter    (plist-get args :filter))
+	 (sentinel  (plist-get args :sentinel))
+	 ;; Compile the command to start the TLS binary.
+	 (arguments (format-spec rudel-tls-client-arguments
+				 (format-spec-make
+				  ?h host
+				  ?p (number-to-string port))))
+	 ;; Start the TLS program.
+	 (process (apply #'start-process
+			 (format "*tls-%s*" host) nil
+			 rudel-tls-client-program
+			 (split-string arguments " "))))
+
+    ;; Store filter function and attach proxy filter to handle TLS
+    ;; handshake.
+    (when filter
+      (rudel-set-process-object process filter :old-filter))
+    (set-process-filter process #'rudel-tls-wait-init)
+
+    ;; Attach sentinel function.
+    (when sentinel
+      (set-process-sentinel process sentinel))
+
+    ;; Mark the process as supporting TLS encryption
+    (rudel-set-process-object process t :supports-tls)
+
+    process)
+  )
+
+(defun rudel-tls-start-tls (process)
+  "Enable TLS encryption for the network connection PROCESS.
+This only works if PROCESS has been created by
+`rudel-tls-make-process'."
+  ;; Save current filter function.
+  (rudel-set-process-object
+   process (process-filter process) :old-filter)
+  ;; Install TLS handshake filter function and signal program to start
+  ;; TLS handshake.
+  (message "tls-start-tls: switching to \"handshake\" filter")
+  (set-process-filter process #'rudel-tls-wait-handshake)
+  (signal-process process 'sigalrm)
+  )
+
+(defun rudel-tls-wait-init (process data)
+  "Is installed as process filter on PROCESS until gnutls is done printing messages."
+  ;; Retrieve complete lines.
+  (let ((buffer (rudel-process-object process :buffer)))
+    (rudel-assemble-line-fragments data buffer)
+    (rudel-set-process-object process buffer :buffer))
+
+  (let ((client-data)
+	(old-filter (rudel-process-object process :old-filter))
+	(client-mode))
+
+    ;; Assemble lines that were not generated by gnutls. It is very
+    ;; brittle to wait for last line of gnutls output like, but it
+    ;; cannot be helped.
+    (rudel-loop-lines data line
+      (if client-mode
+	  (setq client-data (concat client-data line "\n"))
+	(when (string-match-p "- Simple Client Mode.*" line)
+	  (setq client-mode t))))
+
+    ;; When there are any lines not generated by gnutls,
+    ;; initialization is over. Process the data and install the old
+    ;; filter function.
+    (when client-data
+      (funcall old-filter process client-data))
+    (when client-mode
+      (message "tls-wait-init: switching back to old filter")
+      (set-process-filter process old-filter)))
+  )
+
+(defun rudel-tls-wait-handshake (process data)
+  "Is installed as process filter on PROCESS while gnutls is doing the TLS handshake."
+  ;; Retrieve complete lines.
+  (let ((buffer (rudel-process-object process :buffer)))
+    (rudel-assemble-line-fragments data buffer)
+    (rudel-set-process-object process buffer :buffer))
+
+  (let ((client-data)
+	(old-filter  (rudel-process-object process :old-filter))
+	(client-mode))
+
+    ;; Assemble lines that were not generated by gnutls. It is very
+    ;; brittle to wait for last line of gnutls output like, but it
+    ;; cannot be helped.
+    (rudel-loop-lines data line
+      (if client-mode
+	  (setq client-data (concat client-data line "\n"))
+	(when (string-match-p "- Compression.*" line)
+	  (setq client-mode t))))
+
+    ;; When there are any lines not generated by gnutls, handshake is
+    ;; over. Process the data and install `established' filter
+    ;; function.
+    (when client-data
+      (funcall old-filter process client-data))
+    (when client-mode
+      (message "tls-wait-handshake: switching to \"established\" filter")
+      (set-process-filter process #'rudel-tls-established)
+      (rudel-set-process-object process t :encryption)))
+  )
+
+(defun rudel-tls-established (process data)
+  "Is installed as process filter on PROCESS after gnutls has established TLS encryption."
+  ;; Retrieve complete lines.
+  (let ((buffer (rudel-process-object process :buffer)))
+    (rudel-assemble-line-fragments data buffer)
+    (rudel-set-process-object process buffer :buffer))
+
+  (let ((client-data)
+	(old-filter (rudel-process-object process :old-filter)))
+
+    ;; Assemble lines that were not generated by gnutls.
+    (rudel-loop-lines data line
+      (unless (string-match-p "- Peer has closed the GNUTLS connection" line)
+	(setq client-data (concat client-data line "\n"))))
+
+    ;; When there are any lines not generated by gnutls, pass those to
+    ;; the old filter function.
+    (when client-data
+      (funcall old-filter process client-data)))
+  )
+
+(provide 'rudel-tls)
+;;; rudel-tls.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-transport.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-transport.el.svn-base
new file mode 100644
index 0000000..8f0b21d
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-transport.el.svn-base
@@ -0,0 +1,72 @@
+;;; rudel-transport.el --- Rudel transport interface and backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, backend, transport
+;; X-RCS: $Id:$
+;;
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the interface for Rudel transport backends.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-backend)
+
+
+;;; Class rudel-transport
+;;
+
+(defclass rudel-transport ()
+  ()
+  "Interface for transport objects.")
+
+(defgeneric rudel-transport-send ((this rudel-transport) data)
+  "Send DATA through THIS transport object.")
+
+(defgeneric rudel-transport-set-handler ((this rudel-transport)
+					 handler)
+  "Install HANDLER as dispatcher for messages received by THIS.")
+
+
+;;; Class rudel-transport-backend
+;;
+
+(defclass rudel-transport-backend (rudel-backend)
+  ()
+  "Interface implemented by transport backends."
+  :abstract t)
+
+(defgeneric rudel-make-connection ((this rudel-transport-backend) info)
+  "Create a transport object according to INFO.")
+
+(defgeneric rudel-wait-for-connections ((this rudel-transport-backend)
+					info)
+  "Create a transport object according to INFO.")
+
+(provide 'rudel-transport)
+;;; rudel-transport.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel-util.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel-util.el.svn-base
new file mode 100644
index 0000000..12a967c
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel-util.el.svn-base
@@ -0,0 +1,261 @@
+;;; rudel-util.el --- Miscellaneous functions for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, miscellaneous, util
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains miscellaneous functions for Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel-errors)
+
+
+;;; Errors
+;;
+
+;; rudel-dispatch-error
+
+(intern "rudel-dispatch-error")
+
+(put 'rudel-dispatch-error 'error-conditions
+     '(error
+       rudel-error rudel-dispatch-error))
+
+(put 'rudel-dispatch-error 'error-message
+     "Could not dispatch message to handler")
+
+
+;;; Class rudel-hook-object
+;;
+
+(defclass rudel-hook-object ()
+  ()
+  "Mixin for classes that offer one or more hooks for each of
+their objects.
+
+This idiom is usually called something like signal/slot or
+event/subscription, but for Emacs, the notion of hooks seems more
+appropriate."
+  :abstract t)
+
+(defmethod object-add-hook ((this rudel-hook-object)
+			    hook function &optional append)
+  "Add FUNCTION to HOOK for THIS.
+If APPEND is non-nil FUNCTION becomes the last element in the
+list of hooks."
+  (let ((value (slot-value this hook)))
+    (unless (member function value)
+      (set-slot-value this hook
+		      (if append (append value (list function))
+			(cons function value)))))
+  )
+
+(defmethod object-remove-hook ((this rudel-hook-object)
+			       hook function)
+  "Remove FUNCTION from HOOK for THIS."
+  (set-slot-value this hook
+		  (remove function (slot-value this hook))))
+
+(defmethod object-run-hook-with-args ((this rudel-hook-object)
+				      hook &rest arguments)
+  "Run HOOK of THIS with arguments ARGUMENTS."
+  (let ((hook (slot-value this hook)))
+    (apply #'run-hook-with-args 'hook this arguments)))
+
+
+;;; Class rudel-socket-owner
+;;
+
+(defclass rudel-socket-owner ()
+  ((socket :initarg :socket
+	   :type    process
+	   :documentation
+	   "The process object representing the socket through
+which the communication happens."))
+  "Class rudel-socket-owner ")
+
+(defmethod initialize-instance :after ((this rudel-socket-owner)
+				       &rest slots)
+  "Attach THIS to as process object of our socket."
+  ;; Attach to our socket.
+  (with-slots (socket) this
+    (rudel-set-process-object socket this))
+  )
+
+(defmethod rudel-disconnect ((this rudel-socket-owner))
+  "Disconnect the network connection owned by THIS."
+  (with-slots (socket) this
+    (delete-process socket)))
+
+(defmethod rudel-state-change ((this rudel-socket-owner) state message)
+  "Called when the state of THIS changes to STATE.
+MESSAGE is the message emitted when the state transition
+occurred."
+  (with-slots (socket) this
+    (case state
+      ;; Nothing to do here.
+      (run
+       nil)
+
+      ;; Dispatch events which indicate the termination of the
+      ;; connection to `rudel-close'.
+      ((closed failed exit)
+       (rudel-close this))))
+  )
+
+(defmethod rudel-close ((this rudel-socket-owner))
+  "Called when the connection associated to THIS is closed.")
+
+
+;;; Networking helper functions and macros
+;;
+
+(defun rudel-process-object (process &optional key)
+  "Return the object attached to PROCESS using identifier KEY."
+  (unless key
+    (setq key :object))
+  (get (intern (process-name process)) key))
+
+(defun rudel-set-process-object (process object &optional key)
+  "Set object attached to PROCESS using identifier KEY to OBJECT."
+  (unless key
+    (setq key :object))
+  (put (intern (process-name process)) key object))
+
+(defun rudel-filter-dispatch (process data)
+  "Call `rudel-receive' method of object attached to PROCESS with DATA."
+  (let ((object (rudel-process-object process)))
+    (rudel-receive object data)))
+
+(defun rudel-sentinel-dispatch (process message)
+  "Call `rudel-state-change' method of the object attached to PROCESS with state and MESSAGE."
+  (let ((object (rudel-process-object process))
+	(state  (process-status process)))
+    (rudel-state-change object state message)))
+
+
+;;; Fragmentation and assembling functions.
+;;
+
+(defmacro rudel-assemble-line-fragments (data storage)
+  "Find an return complete lines in DATA, store excess data in STORAGE.
+If STORAGE is non-nil when calling, consider content as leftover
+data from last and concatenate with DATA before processing."
+  (declare (debug (form form)))
+  (let ((index (make-symbol "index")))
+    `(progn
+       ;; If there are stored fragments, append them to the new data.
+       (when ,storage
+	 (setq ,data    (concat ,storage ,data))
+	 (setq ,storage nil))
+       ;; Try to find a line break in the augmented data.
+       (let ((,index (position ?\n ,data :from-end t)))
+	 (unless (and ,index (eq ,index (- (length ,data) 1)))
+	   (setq ,storage (if ,index
+			      (substring ,data (+ ,index 1))
+			    ,data))
+	   (setq ,data    (when ,index
+			    (substring ,data 0 (+ ,index 1))))))
+       ,data))
+  )
+
+(defmacro rudel-loop-lines (data var &rest forms)
+  "Execute FROMS with VAR subsequently bound to all lines in DATA."
+  (declare (indent 2)
+	   (debug (form symbolp &rest form)))
+  (let ((lines (make-symbol "lines")))
+    `(when ,data
+       (let ((,lines (split-string ,data "\n" t)))
+	 (dolist (,var ,lines)
+	   (progn ,@forms)))))
+  )
+
+(defmacro rudel-loop-chunks (data var size &rest forms)
+  "Execute FROMS in a loop with VAR bound to chunks of DATA of SIZE.
+Unless (zerop (mod (length data) size) 0) the final chunk is
+truncated. The expression SIZE is evaluated in each loop unless
+it is a number."
+  (declare (indent 3)
+	   (debug (form symbolp numberp &rest form)))
+  ;; If we got a constant number as SIZE, we can check right away.
+  (when (and (numberp size) (<= size 0))
+    (error "Size should be positive"))
+
+  (let ((rest   (make-symbol "rest"))
+	(amount (make-symbol "amount"))
+	;; If SIZE has to be evaluated, we have to check at runtime.
+	(check  (unless (numberp size)
+		  `((when (<= ,size 0)
+		      (error "Size should be positive"))))))
+    `(progn
+       ,@check
+       (let ((,rest ,data)
+	     (,var)
+	     (,amount))
+	 (while (not (string= ,rest ""))
+	   (setq ,amount (min (length ,rest) ,size)
+		 ,var    (substring ,rest 0 ,amount)
+		 ,rest   (substring ,rest ,amount))
+	   (progn ,@forms)))))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-dispatch (object prefix name arguments)
+  "Call method (concat PREFIX NAME) of OBJECT with ARGUMENTS.
+If no such method can be found, the condition
+rudel-dispatch-error is signalled."
+  ;; Construct a matching symbol.
+  (let* ((method (intern-soft (concat prefix name))))
+    ;; If we found a suitable method, run it; Otherwise signal.
+    (unless method
+      (signal 'rudel-dispatch-error 'method-symbol-unbound))
+    (condition-case error
+	;; Try to call METHOD. This can still fail when METHOD is not
+	;; defined for the class of OBJECT.
+	(apply method object arguments)
+      ;; Only handle a condition 'no-method-definition' that refers to
+      ;; METHOD, otherwise continue unwinding.
+      (no-method-definition
+       (if (eq method (cadr error))
+	   (signal 'rudel-dispatch-error 'no-method-for-object)
+	 (signal (car error) (cdr error))))))
+  )
+
+(provide 'rudel-util)
+;;; rudel-util.el ends here
diff --git a/emacs.d/lisp/rudel/.svn/text-base/rudel.el.svn-base b/emacs.d/lisp/rudel/.svn/text-base/rudel.el.svn-base
new file mode 100644
index 0000000..88603fa
--- /dev/null
+++ b/emacs.d/lisp/rudel/.svn/text-base/rudel.el.svn-base
@@ -0,0 +1,1012 @@
+;;; rudel.el --- A collaborative editing framework for Emacs
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, collaboration
+;; URL: http://rudel.sourceforge.net/
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Rudel is a framework for collaborative editing in Emacs.  Its
+;; architecture allows communication with arbitrary collaborative
+;; editors.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+(require 'eieio-base)
+
+(require 'eieio-speedbar) ;; TODO required for now
+
+(require 'rudel-util)
+(require 'rudel-backend)
+(require 'rudel-session-initiation)
+(require 'rudel-operations)
+(require 'rudel-operators)
+(require 'rudel-overlay)
+(require 'rudel-hooks)
+(require 'rudel-interactive) ;; for `rudel-read-backend',
+			     ;; `rudel-read-document',
+			     ;; `rudel-read-session'
+(require 'rudel-icons)
+(require 'rudel-compat) ;; for `read-color' replacement
+
+
+;;; Global variables
+;;
+
+(defconst rudel-version '(0 3)
+  "Version of the Rudel framework.")
+
+(defvar rudel-current-session nil
+  "Global object representing the current Rudel session.
+nil if there is no active session.")
+
+(defvar rudel-buffer-document nil
+  "Buffer-local variable which holds the Rudel document associated with the buffer.")
+(make-variable-buffer-local 'rudel-buffer-document)
+(put 'rudel-buffer-document 'permanent-local t)
+
+(defvar rudel-buffer-change-workaround-data nil
+  "Buffer-local variable which holds change data that could not be accessed otherwise.
+It would be nice to find another way to do this.")
+(make-variable-buffer-local 'rudel-buffer-change-workaround-data)
+(put 'rudel-buffer-change-workaround-data 'permanent-local t)
+
+
+;;; Customization
+;;
+
+(defgroup rudel nil
+  "Rudel collaborative editing framework."
+  :group 'applications)
+
+(defcustom rudel-allocate-buffer-function
+  'rudel-allocate-buffer-clear-existing
+  "A function used to find or create buffers to associate to documents.
+The function is called with the document name as the sole
+argument and has to return a buffer object which will be attached
+to the document in question."
+  :group   'rudel
+  :type    '(choice (const :tag "Clear content of existing buffer"
+			   rudel-allocate-buffer-clear-existing )
+		    (const :tag "Create a new uniquely named buffer"
+			   rudel-allocate-buffer-make-unique )
+		    (function :tag "Other function"))
+  :require 'rudel-interactive)
+
+(defcustom rudel-default-username (user-login-name)
+  "*"
+  :group 'rudel
+  :type  '(string))
+
+
+;;; Class rudel-session
+;;
+
+(defclass rudel-session (rudel-hook-object)
+  ((backend              :initarg  :backend
+			 :type     rudel-backend-child
+			 :documentation
+			 "The backend used by this session.")
+   (users                :initarg  :users
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "The list of users participating in this
+session.")
+   (documents            :initarg  :documents
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This list of documents available in
+this session.")
+   ;; Hooks
+   (end-hook             :initarg  :end-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "")
+   (add-user-hook        :initarg  :add-user-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a user gets added
+to the session.
+The arguments are the session and the user object.")
+   (remove-user-hook     :initarg  :remove-user-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a user gets
+removed from the session.
+The arguments are the session and the user object.")
+   (add-document-hook    :initarg  :add-document-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a document gets
+added to the session.
+The arguments are the session and the document object.")
+   (remove-document-hook :initarg  :remove-document-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a document gets
+removed from the session.
+The arguments are the session and the document object."))
+  "This class serves as a base class for rudel-client-session and
+rudel-server-session. Consequently, it consists of slots common
+to client and server sessions."
+  :abstract t)
+
+(defmethod rudel-end ((this rudel-session))
+  "Terminate THIS session performing all necessary cleanup."
+  ;; Run the hook.
+  (object-run-hook-with-args this 'end-hook))
+
+(defmethod rudel-add-user ((this rudel-session) user)
+  "Add USER to the user list of THIS session.
+
+Runs object hook (see `rudel-hook-object') `add-user-hook' with
+arguments THIS and USER."
+  ;; Add USER to list.
+  (object-add-to-list this :users user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'add-user-hook user))
+
+(defmethod rudel-remove-user ((this rudel-session) user)
+  "Remove USER from the user list of THIS session.
+
+Runs object hook (see `rudel-hook-object') `remove-user-hook'
+with arguments THIS and USER."
+  ;; Remove USER from list.
+  (object-remove-from-list this :users user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'remove-user-hook user))
+
+(defmethod rudel-find-user ((this rudel-session)
+			    which &optional test key)
+  "Find user WHICH in the user list.
+WHICH is compared to the result of KEY using TEST."
+  (unless test
+    (setq test #'string=))
+  (unless key
+    (setq key #'object-name-string))
+  (with-slots (users) this
+    (find which users :key key :test test))
+  )
+
+(defmethod rudel-add-document ((this rudel-session) document)
+  ""
+  (unless (slot-boundp document :session)
+    (oset document :session this))
+
+  ;; Add DOCUMENT to the list of documents in THIS session.
+  (object-add-to-list this :documents document)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'add-document-hook document))
+
+(defmethod rudel-remove-document ((this rudel-session) document)
+  "Remove DOCUMENT from THIS session, detaching it if necessary."
+  ;; Detach document from its buffer when necessary.
+  (when (rudel-attached-p document)
+    (rudel-detach-from-buffer document))
+
+  ;; Remove DOCUMENT from the list of documents in THIS session.
+  (object-remove-from-list this :documents document)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'remove-document-hook document))
+
+(defmethod rudel-find-document ((this rudel-session)
+				which &optional test key)
+  "Find document WHICH in the document list.
+WHICH is compared to the result of KEY using TEST."
+  (unless test
+    (setq test #'string=))
+  (unless key
+    (setq key #'object-name-string))
+  (with-slots (documents) this
+    (find which documents :key key :test test))
+  )
+
+(defmethod rudel-unsubscribed-documents ((this rudel-session))
+  ""
+  (unless (slot-boundp this :self)
+    (error "Cannot find unsubscribed documents unless slot self is bound"))
+  (with-slots (documents self) this
+    (remove-if
+     (lambda (document)
+       (with-slots (subscribed) document
+	 (memq self subscribed)))
+       documents))
+  )
+
+
+;;; Class rudel-client-session
+;;
+(defclass rudel-client-session (rudel-session)
+  ((connection :initarg  :connection
+	       :type     (or null rudel-connection-child)
+	       :initform nil
+	       :documentation
+	       "The connection used for communication by this
+session.")
+   (self       :initarg  :self
+	       :type     rudel-user-child
+	       :documentation
+	       "Points into USERS to the user object representing
+the local user"))
+  "Objects represent a collaborative editing session from a
+client perspective.")
+
+(defmethod rudel-end ((this rudel-client-session))
+  ;; Clean everything up
+  (with-slots (connection users documents) this
+    ;; Detach all documents from their buffers
+    (mapc #'rudel-detach-from-buffer documents)
+
+    ;; Terminate the connection
+    (when connection
+      (condition-case nil
+	  (rudel-disconnect connection)
+	(error nil))))
+
+  ;;
+  (when (next-method-p)
+    (call-next-method))
+  )
+
+
+;;; Class rudel-server-session
+;;
+
+(defclass rudel-server-session (rudel-session)
+  ()
+  "Class rudel-server-session "
+  :abstract t)
+
+
+;;; Class rudel-connection
+;;
+
+(defclass rudel-connection ()
+  ((session :initarg :session
+	    :type    rudel-session-child
+	    :documentation
+	    ""))
+  "This abstract class defines the interface implementations of
+client protocols have to obey."
+  :abstract t)
+
+(defgeneric rudel-disconnect ((this rudel-connection))
+  "Close the connection.")
+
+(defgeneric rudel-change-color- ((this rudel-connection) color) ;; TODO name
+  "")
+
+(defgeneric rudel-publish ((this rudel-connection) document)
+  "")
+
+(defgeneric rudel-subscribe-to ((this rudel-connection) document)
+  "")
+
+(defgeneric rudel-unsubscribe-from ((this rudel-connection) document) ; TODO name should be rudel-unsubscribe
+  "")
+
+(defgeneric rudel-local-insert ((this rudel-connection))
+  "")
+
+(defgeneric rudel-local-delete ((this rudel-connection))
+  "")
+
+(defgeneric rudel-remote-insert ((this rudel-connection))
+  "")
+
+(defgeneric rudel-remote-delete ((this rudel-connection))
+  "")
+
+
+;;; Class rudel-user
+;;
+
+(defclass rudel-user (eieio-named
+		      eieio-speedbar-file-button
+		      rudel-hook-object)
+  ((color       :initarg  :color
+		:accessor rudel-color
+		:documentation
+		"Color used to indicate ownership or authorship
+by the user. Examples includes text written by the user or the
+user name itself.")
+   (change-hook :initarg  :change-hook
+		:type     list
+		:initform nil
+		:documentation
+		"This hook is run when this user object
+changes."))
+  "Objects of this class represent users participating in
+collaborative editing session. Note that a participating user
+does not have to be connected to the session at any given time."
+  :abstract t)
+
+(defmethod rudel-display-string ((this rudel-user)
+				 &optional use-images align)
+  "Return a textual representation of THIS for user interface stuff."
+  (with-slots ((name :object-name) color) this
+    (propertize
+     (concat
+      (when use-images
+	(propertize "*" 'display rudel-icon-person))
+      name)
+     'face (list :background color)))
+  )
+
+
+;;; Class rudel-document
+;;
+
+(defclass rudel-document (eieio-named
+			  eieio-speedbar-file-button
+			  rudel-hook-object)
+  ((session          :initarg  :session
+		     :type     rudel-session
+		     :documentation
+		     "")
+   (buffer           :initarg  :buffer
+		     :type     (or null buffer)
+		     :initform nil
+		     :documentation
+		     "")
+   (subscribed       :initarg  :subscribed
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "")
+   ;; Hooks
+   (subscribe-hook   :initarg  :subscribe-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when a user subscribes to
+this document object.")
+   (unsubscribe-hook :initarg  :unsubscribe-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when a user unsubscribes
+from this document object.")
+   (attach-hook      :initarg  :attach-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when a buffer is attached
+to this document object.")
+   (detach-hook      :initarg  :detach-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when the attached buffer
+is detached from this document object."))
+  "This class represents a document, which participants of a
+collaborative editing session can subscribe to."
+  :abstract t)
+
+(defmethod rudel-unique-name ((this rudel-document))
+  "Returns a suggested name for the buffer attached to THIS document."
+  (object-name-string this))
+
+(defmethod rudel-suggested-buffer-name ((this rudel-document))
+  "Returns a suggested name for the buffer attached to THIS document."
+  (rudel-unique-name this))
+
+(defmethod rudel-attached-p ((this rudel-document))
+  (with-slots (buffer) this
+    buffer))
+
+(defmethod rudel-attach-to-buffer ((this rudel-document) buffer)
+  "Attach THIS document to BUFFER"
+  (with-slots ((doc-buffer :buffer)) this
+    ;; Set buffer slot of THIS to BUFFER and associated THIS with
+    ;; BUFFER.
+    (setq doc-buffer buffer)
+    (rudel-set-buffer-document this buffer)
+
+    (with-current-buffer doc-buffer
+      ;; Add the handler function for buffer changes to the buffer's
+      ;; change hook.
+      (add-hook 'after-change-functions
+		#'rudel-handle-buffer-change
+		nil t)
+
+      ;; Store change data before the change a done. This is necessary
+      ;; because the number of bytes (not characters) cannot otherwise
+      ;; be recovered after a deletion.
+      (add-hook 'before-change-functions
+		#'rudel-buffer-change-workaround
+		nil t)
+
+      ;; Add a handler to the kill-buffer hook to unsubscribe from the
+      ;; document when the buffer gets killed.
+      (add-hook 'kill-buffer-hook
+		#'rudel-unpublish-buffer
+		nil t)
+
+      ;;
+      (add-hook 'change-major-mode-hook
+		#'rudel-handle-major-mode-change
+		nil t))
+
+    ;; Run the hook.
+    (object-run-hook-with-args this 'attach-hook doc-buffer))
+  )
+
+(defmethod rudel-detach-from-buffer ((this rudel-document))
+  "Detach document THIS from its buffer.
+Do nothing, if THIS is not attached to any buffer."
+  (with-slots (buffer) this
+    (let ((buffer-save buffer))
+
+      ;; Only try to detach from BUFFER, if it is non-nil. BUFFER can
+      ;; be nil, if the user did not subscribe to the document, or
+      ;; unsubscribed after subscribing.
+      (when buffer
+
+	(with-current-buffer buffer
+	  ;; Remove our handler function from the kill-buffer hook.
+	  (remove-hook 'kill-buffer-hook
+		       #'rudel-unpublish-buffer
+		       t)
+
+	  ;; Remove our handler function from the after-change hook.
+	  (remove-hook 'after-change-functions
+		       #'rudel-handle-buffer-change
+		       t)
+
+	  ;; Remove our handler function from the before-change hook.
+	  (remove-hook 'before-change-functions
+		       #'rudel-buffer-change-workaround
+		       t)
+
+	  ;; Remove all overlays.
+	  (rudel-overlays-remove-all)
+
+	  ;; Remove the major mode change handler.
+	  (remove-hook 'change-major-mode-hook
+		       #'rudel-handle-major-mode-change
+		       t))
+
+	;; Unset buffer slot of THIS and delete association of THIS with
+	;; BUFFER.
+	(rudel-set-buffer-document nil buffer)
+	(setq buffer nil))
+
+      ;; Run the hook.
+      (object-run-hook-with-args this 'detach-hook buffer-save)))
+  )
+
+(defmethod rudel-add-user ((this rudel-document) user)
+  "Add USER to the list of subscribed users of THIS.
+
+Runs object hook (see `rudel-hook-object') `subscribe-hook' with
+arguments THIS and USER."
+  ;; Add USER to list.
+  (object-add-to-list this :subscribed user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'subscribe-hook user))
+
+(defmethod rudel-remove-user ((this rudel-document) user)
+  "Remove USER from the list of subscribed users of THIS.
+
+Runs object hook (see `rudel-hook-object') `unsubscribe-hook'
+with arguments THIS and USER."
+  ;; Remove USER from list.
+  (object-remove-from-list document :subscribed user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'unsubscribe-hook user))
+
+(defmethod rudel-insert ((this rudel-document) position data)
+  "Insert DATA at POSITION into the buffer attached to THIS.
+When POSITION is nil `point-max' is used to determine the
+insertion position.
+Modification hooks are disabled during the insertion."
+  (with-slots (buffer) this
+    (save-excursion
+      (set-buffer buffer)
+
+      (unless position
+	(setq position (- (point-max) 1)))
+
+      (let ((inhibit-modification-hooks t))
+	(goto-char (+ position 1))
+	(insert data))))
+  )
+
+(defmethod rudel-delete ((this rudel-document) position length)
+  "Delete a region of LENGTH character at POSITION from the buffer attached to THIS.
+Modification hooks are disabled during the insertion."
+  (with-slots (buffer) this
+    (save-excursion
+      (set-buffer buffer)
+
+      (let ((inhibit-modification-hooks t))
+	(delete-region (+ position 1) (+ position length 1)))))
+  )
+
+(defmethod rudel-local-operation ((this rudel-document) operation)
+  "Apply the local operation OPERATION to THIS."
+  (with-slots (session buffer) this
+    (with-slots (connection (user :self)) session
+      (dolist (operators (list
+
+			   ;; Update overlays
+			   (rudel-overlay-operators
+			    "overlay-operators"
+			    :document this
+			    :user     user)
+
+			   ;; Notify connection
+			   (rudel-connection-operators
+			    "connection-operators"
+			    :connection connection
+			    :document   this)))
+
+	;; Apply the operation using each set of operators
+	(rudel-apply operation operators))))
+  )
+
+(defmethod rudel-remote-operation ((this rudel-document) user operation)
+  "Apply the remote operation OPERATION performed by USER to THIS."
+  (dolist (operators (append
+
+		       ;; Update buffer contents
+		       (list (rudel-document-operators
+			      "document-operators"
+			      :document this))
+
+		       ;; Update overlays
+		       (when user
+			 (list (rudel-overlay-operators
+				"overlay-operators"
+				:document this
+				:user     user)))))
+
+    ;; Apply the operation using each set of operators
+    (rudel-apply operation operators))
+  )
+
+(defmethod rudel-chunks ((this rudel-document))
+  "Return a list of text chunks of the associated buffer.
+Each element in the chunk is a list structured like this (START
+END AUTHOR). START and END are numbers, AUTHOR is of type (or
+null rudel-user-child)."
+  (with-slots (buffer) this
+    ;; Extract buffer string and a list of chunks partitioning the
+    ;; string according to the respective author (or nil).
+    (with-current-buffer buffer
+      (let ((string         (buffer-string)) ;; TODO no-properties?
+	    (overlay-chunks (mapcar
+			     (lambda (overlay)
+			       (list (- (overlay-start overlay) 1)
+				     (- (overlay-end   overlay) 1)
+				     (rudel-overlay-user overlay)))
+			     (sort* (rudel-author-overlays)
+				    '< :key 'overlay-start)))
+	    (last)
+	    (augmented-chunks))
+
+	;; Iterate through the list of chunks to find gaps between
+	;; chunks (also before the first) and insert entries with
+	;; author nil accordingly.
+	(dolist (chunk overlay-chunks)
+	  (when (or (and (not last)
+			 (> (nth 0 chunk) 0))
+		    (and last
+			 (/= (nth 1 last)
+			     (nth 0 chunk))))
+	    (push (list (if last (nth 1 last) 0)
+			(nth 0 chunk)
+			nil)
+		  augmented-chunks))
+	  (push chunk augmented-chunks)
+	  (setq last chunk))
+
+	;; If there is text after the last chunk, create another one
+	;; with author nil. If there were no chunks at all, this chunk
+	;; can also cover the whole buffer string.
+	(when (or (and (not last)
+		       (/= (length string) 0))
+		  (and last
+		       (/= (nth 1 last) (length string))))
+	  (push (list (if last (nth 1 last) 0)
+		      (length string)
+		      nil)
+		augmented-chunks))
+
+	;; Sort chunks according to the start position.
+	(sort* augmented-chunks '< :key 'car))))
+  )
+
+
+;;; Buffer-related functions
+;;
+
+(defun rudel-buffer-has-document-p (&optional buffer)
+  "Return non-nil if a document object is attached to BUFFER.
+If BUFFER is nil, use the current buffer."
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (buffer-local-value 'rudel-buffer-document buffer))
+
+(defun rudel-buffer-document (&optional buffer)
+  "Return the document object attached to BUFFER.
+If BUFFER is nil, use the current buffer."
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (buffer-local-value 'rudel-buffer-document buffer))
+
+(defun rudel-set-buffer-document (document &optional buffer)
+  "Associate BUFFER to DOCUMENT.
+If DOCUMENT is nil, make it not associated to any buffer.
+If BUFFER is nil, use the current buffer."
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (with-current-buffer buffer
+    (setq rudel-buffer-document document)))
+
+(defun rudel-handle-buffer-change (from to length)
+  "Handle buffer change at range FROM to TO with length LENGTH by relaying them to the document object of the buffer.
+See after-change-functions for more information."
+  (when (rudel-buffer-has-document-p)
+    (let ((document (rudel-buffer-document))
+	  (text)) ; TODO with-rudel-buffer-document?
+      (cond
+       ;; The change was an insert
+       ((and (/= from to)
+	     (zerop length))
+	(with-slots (buffer) document
+	  (with-current-buffer buffer
+	    (setq text (buffer-substring-no-properties from to)))
+	  (rudel-local-operation document
+				 (rudel-insert-op
+				  "insert"
+				  :from (- from 1)
+				  :data text))))
+
+       ;; The change was a delete
+       ((and (= from to)
+	     (not (zerop length)))
+	(rudel-local-operation document
+			       (rudel-delete-op
+				"delete"
+				:from   (- from 1)
+				:length length)))
+
+       ;; The operation was neither an insert nor a delete. This seems
+       ;; to mean that the region has changed arbitrarily. The only
+       ;; option we have is sending a delete and corresponding insert
+       ;; message that emulate the change.
+       (t
+	(with-slots (buffer) document
+	  (with-current-buffer buffer
+	    (setq text (buffer-substring-no-properties from to)))
+	  (rudel-local-operation document
+				 (rudel-delete-op
+				  "delete"
+				  :from   (- from 1)
+				  :length length))
+	  (rudel-local-operation document
+				 (rudel-insert-op
+				  "insert"
+				  :from (- from 1)
+				  :data text)))))))
+  )
+
+(defun rudel-buffer-change-workaround (from to)
+  (when (/= from to)
+    (setq rudel-buffer-change-workaround-data
+	  (list from to
+		(buffer-substring-no-properties from to)))))
+
+
+;;; Protection against major mode changes
+;;
+
+(defvar rudel-mode-changed-buffers nil
+  "List of buffers that may need to be repaired after a major
+  mode change.")
+
+(defun rudel-handle-major-mode-change ()
+  "Store the current buffer to repair damage done by major mode change.
+
+Note: The way this works is inspired by mode-local.el by David
+Ponce and Eric M. Ludlam."
+  ;; Store the buffer for later repair.
+  (add-to-list 'rudel-mode-changed-buffers (current-buffer))
+
+  ;; Schedule `rudel-after-major-mode-change' to run after the
+  ;; command, that caused the major mode change.
+  (add-hook 'post-command-hook
+	    #'rudel-after-major-mode-change)
+  )
+
+(defun rudel-after-major-mode-change ()
+  "Repair damage done by major mode changes.
+As a function in `post-command-hook', this is run after there was
+a `major-mode' change.
+
+Note: The way this works is inspired by mode-local.el by David
+Ponce and Eric M. Ludlam."
+  ;; Remove this function from `post-command-hook'.
+  (remove-hook 'post-command-hook
+	       #'rudel-after-major-mode-change)
+
+  ;; Repair all buffers affected by the major mode change.
+  (dolist (buffer rudel-mode-changed-buffers)
+    (let ((document (buffer-local-value 'rudel-buffer-document
+					buffer)))
+      (rudel-attach-to-buffer document buffer)))
+  )
+
+
+;;; Interactive functions
+;;
+
+;;;###autoload
+(defun rudel-join-session (info)
+  "Join the collaborative editing session described by INFO.
+INFO is a property list that describes the collaborative editing
+session in terms of properties like :host, :port
+and :encryption. The particular properties and their respective
+meanings depend on the used backend.
+
+When called interactively, all data required to join a session
+will be prompted for."
+  (interactive
+   ;; Try the discover method of session initiation backends to find
+   ;; available sessions.
+   (list
+    (let ((info)
+	  (session-initiation-backend))
+      (while (not info)
+	(message "Discovering Sessions ...")
+	(let* ((sessions   (rudel-session-initiation-discover
+			    session-initiation-backend))
+	       (maybe-info (if (= (length sessions) 1)
+				 (car sessions)
+			       (rudel-read-session
+				sessions "Choose Session: " 'object))))
+	  (if (rudel-backend-cons-p maybe-info)
+	      (setq session-initiation-backend (car maybe-info))
+	    (setq info maybe-info))))
+    info)))
+
+  ;; First, create the session object.
+  (let* ((backend    (cdr (plist-get info :backend)))
+	 (session    (rudel-client-session
+		      (plist-get info :name)
+		      :backend backend))
+	 (connection))
+    ;; Give the backend a chance to collect remaining connect
+    ;; info. For session initiation methods like Zeroconf, we have the
+    ;; _connection_ info, but are still missing the username and
+    ;; stuff.
+    (setq info (rudel-ask-connect-info backend info))
+
+    ;; Add the session object to the connect information.
+    (plist-put info :session session)
+
+    ;; Ask BACKEND to connect using INFO. Do not catch errors since
+    ;; the error messages are probably the best feedback we can give.
+    (setq connection (rudel-connect backend info))
+
+    ;; Set the connection slot of the session object and store it
+    ;; globally.
+    (oset session :connection connection)
+    (setq rudel-current-session session)
+
+    ;; Reset the global session variable when the session ends.
+    (object-add-hook session 'end-hook
+		     (lambda (session)
+		       (setq rudel-current-session nil)))
+
+    ;; Run the hook.
+    (run-hook-with-args 'rudel-session-start-hook session))
+  )
+
+;;;###autoload
+(defun rudel-host-session ()
+  "Host a collaborative editing session.
+All data required to host a session will be prompted for
+interactively."
+  (interactive)
+  ;; If necessary, ask the user for the backend we should use.
+  (let* ((backend (cdr (rudel-backend-choose
+			'protocol
+			(lambda (backend)
+			  (rudel-capable-of-p backend 'host)))))
+	 (info    (rudel-ask-host-info backend))
+	 (server))
+
+    ;; Try to create the server
+    (condition-case error-data
+	(setq server (rudel-host backend info))
+      ('error
+       (error "Could not host session using backend `%s' with %s: %s"
+	      (object-name-string backend)
+	      info
+	      (car error-data))))
+    server))
+
+;;;###autoload
+(defun rudel-end-session ()
+  "End the current collaborative editing session."
+  (interactive)
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  ;; Actually end the session.
+  (rudel-end rudel-current-session)
+  )
+
+;;;###autoload
+(defun rudel-change-color ()
+  "Change the color associated with the local user.
+Not all backends support this operation."
+  (interactive)
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-slots (backend connection self) rudel-current-session
+    ;; Make sure the backend can change colors.
+    (unless (rudel-capable-of-p backend 'change-color)
+      (error "Backend `%s' cannot change colors"
+	     (object-name-string backend)))
+
+    (with-slots ((name :object-name) color) self
+      ;; Ask the user for a new color.
+      (setq color (read-color "New Color: " t))
+
+      ;; Tell the connection to announce the change and change it in
+      ;; our user object.
+      (rudel-change-color- connection color)
+
+      ;; Run the change hook.
+      (object-run-hook-with-args self 'change-hook)
+
+      ;; Update overlay color.
+      (rudel-overlay-set-face-attributes
+       (rudel-overlay-make-face-symbol 'author name)
+       color)))
+  )
+
+;;;###autoload
+(defun rudel-subscribe (document)
+  "Subscribe to DOCUMENT offered by a peer in a collaborative editing session.
+When called interactively, DOCUMENT is prompted for interactively."
+  (interactive
+   (list (progn
+	   ;; We have to retrieve the document list from an active
+	   ;; session.
+	   (unless rudel-current-session
+	     (error "No active Rudel session"))
+	   ;; Select unsubscribed documents.
+	   (let ((documents (rudel-unsubscribed-documents
+			     rudel-current-session)))
+	     ;; Already subscribed to all documents. This is an error.
+	     (when (null documents)
+	       (error "No unsubscribed documents"))
+	     ;; Read an unsubscribed document.
+	     (rudel-read-document documents nil 'object)))))
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  ;; Create a new buffer and attach the document to it.
+  (let* ((name   (rudel-suggested-buffer-name document))
+	 (buffer (funcall rudel-allocate-buffer-function name)))
+    (rudel-attach-to-buffer document buffer)
+
+    (let ((connection (oref (oref document :session) :connection)))
+      (rudel-subscribe-to connection document))
+
+    ;; Show the new buffer.
+    (set-window-buffer nil buffer))
+  )
+
+;;;###autoload
+(defun rudel-publish-buffer (&optional buffer)
+  "Make the BUFFER available for subscription to peers in a collaborative editing session.
+If BUFFER is nil, the current buffer is used."
+  (interactive (list nil))
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (with-current-buffer buffer
+    (when (rudel-buffer-has-document-p)
+      (error "Buffer already published or subscribed"))) ; TODO keep this?
+
+  ;;
+  (with-slots (backend connection self) rudel-current-session
+    (let ((document (rudel-make-document backend
+					 (buffer-name buffer)
+					 rudel-current-session)))
+      (rudel-add-document rudel-current-session document)
+
+      (rudel-attach-to-buffer document buffer)
+      (object-add-to-list document :subscribed self)
+
+      (rudel-publish connection document)))
+  )
+
+;;;###autoload
+(defun rudel-unpublish-buffer (&optional buffer)
+  "Deny peers access to BUFFER in a collaborative editing session.
+If BUFFER is nil, the current is used."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (with-current-buffer buffer
+    (unless (rudel-buffer-has-document-p)
+      (error "Buffer is not published")))
+
+  ;;
+  (with-slots (connection) rudel-current-session
+    (let ((document (rudel-buffer-document buffer)))
+      (rudel-detach-from-buffer document)
+
+      (rudel-unsubscribe-from connection document)))
+  )
+
+(provide 'rudel)
+;;; rudel.el ends here
diff --git a/emacs.d/lisp/rudel/ChangeLog b/emacs.d/lisp/rudel/ChangeLog
new file mode 100644
index 0000000..03c4fab
--- /dev/null
+++ b/emacs.d/lisp/rudel/ChangeLog
@@ -0,0 +1,2403 @@
+2009-10-22  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* TODO (Future): added BEEP and SubEthaEdit tasks
+
+2009-10-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-version): bumped to 0.3
+	* Project.ede (project rudel): bumped version to 0.3
+
+	* TODO: whitespace fixes
+        (Milestone rudel-0.4): new; focus on telepathy transport
+        (Milestone rudel-0.3): added infinote, document trees
+
+2009-10-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* TODO: new file; TODO items for future development and releases
+
+2009-10-12  Phil Hagelberg  <phil@enigma>
+
+        * rudel-mode.el
+	(rudel-mode-line-publish-state--add-indicator-to-mode-line):
+	Replace reference to mode-line indicator that was not present in
+	Emacs 22.
+
+        * rudel-compat.el: add rudel-get-coding-system wrapper function.
+        * rudel-obby-util.el (with-parsed-args): Replace call to
+	Emacs23-specific coding-system-from-name function with
+	rudel-get-coding-system.
+
+        rudel-compat.el: Add string-match-p if not present. (< Emacs 23)
+
+        * rudel-mode.el, rudel-overlay.el: Move use of :safe flag from
+	defcustom to a separate put. Required for Emacs 22 compatibility.
+
+        * rudel-loaddefs.el: Only require rudel-zeroconf if zeroconf is
+	available.
+
+2009-10-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter-delete.el (jupiter-delete::jupiter-transform):
+	fixed error message
+
+2009-10-08  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter.el (header): downcased keywords
+	(object-print): new method; add revisions and log length to string
+	* jupiter/jupiter-nop.el (header): downcased keywords; cosmetic
+	representation changes to "commentary" section
+	* jupiter/jupiter-insert.el (header): downcased keywords; cosmetic
+	changes to "commentary" section
+	(object-print): new method; add start, end, length and data to
+	string representation
+	* jupiter/jupiter-delete.el (header): downcased keywords; cosmetic
+	changes to "commentary" section
+	(jupiter-transform): cosmetic changes
+	(object-print): new method; add position and length to string
+	representation
+	* jupiter/jupiter-compound.el (header): downcased keywords;
+	cosmetic changes to "commentary" section
+	(object-print): new method; add number of children to string
+	representation
+
+2009-10-07  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* doc/card.tex (Session Initiation): mention configured sessions;
+	explain Zeroconf-advertised session in more detail
+
+2009-10-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* doc/card.tex (Joining a Session ...): added global and user
+	passwords
+
+	* rudel.el (rudel-version): use list representation instead of
+	float
+        (rudel-allocate-buffer-function): added documentation string
+
+	* INSTALL (COMPILING): fixed typo
+
+2009-10-06  Phil Hagelberg  <phil@enigma>
+
+        * README (JOINING): Mention `rudel-configured-sessions'
+	customization.
+
+	* README (INTRODUCTION): emphasize obby backend being the only
+	supported one so far
+	(JOINING): update example session with passwords.
+
+	* rudel-loaddefs.el: Add autoloads for rudel-host-session and
+	rudel-speedbar
+
+2009-10-05  Phil Hagelberg  <phil@enigma>
+
+	* README: Mention Eshell issue and license.
+
+2009-10-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-compat.el (make-pulsing-progress-reporter): removed;
+	`make-progress-reporter' is sufficient
+	(progress-reporter-pulse): store index in the car of the reporter;
+	set last update time of the reporter
+	* obby/rudel-obby.el (rudel-connect): use `make-progress-reporter'
+	instead of `make-pulsing-progress-reporter'
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-subscribe-to): cosmetic changes in
+	status messages
+
+	* ChangeLog: updated
+
+2009-10-02  Phil Hagelberg  <phil@enigma>
+
+	* INSTALL: Mention CEDET's inclusion in Emacs
+
+	* rudel-state-machine.el (rudel-state-wait): update progress
+	reporter usage to match rudel-compat.el
+
+	* rudel-compat.el: Use updated progress reporters
+	(progress-reporter-update): may be used by pulsing reporters too
+	(make-progress-reporter): nil max value returns pulsing reporter
+	(progress-reporter-force-update): may be used by pulsing reporters
+	too
+	(progress-reporter-pulsing-p): added
+	(progress-reporter-pulse): removed message change option
+
+2009-10-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-state-machine.el (rudel-state-wait): accept callback
+	function instead of message; adjusted documentation string
+        * obby/rudel-obby.el (rudel-obby-backend::rudel-connect): when
+	calling `rudel-state-wait', provide a callback; the callback
+	controls a progress reporter
+        * obby/rudel-obby-client.el
+        (rudel-obby-connection::rudel-subscribe-to): when calling
+	`rudel-state-wait', provide a callback; the callback controls a
+	progress reporter
+
+        * rudel-compat.el (progress-reporter-pulse): store index as float
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_create):
+	cosmetic changes of printed messages
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_remove):
+	cosmetic changes of printed messages
+
+	* rudel.el (rudel-session::rudel-remove-document): when necessary,
+	detach document first; added documentation string
+	(rudel-document::rudel-attached-p): new method; return non-nil
+	when document is attached to a buffer
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_part):
+	promoted warning severity to :warning
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_remove):
+	fixed lookup of document; added warning message in case it is not
+	found
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/rename):
+	promoted warning severity to :warning
+	(rudel-obby-connection::rudel-unpublish): new method; ask server
+	to remove a document
+
+2009-10-01  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-state-machine.el (rudel-state-wait): fixed progress range
+	[0, 100] -> [0, 1]; fixed reference to reporter object
+	* obby/rudel-obby.el (rudel-obby-send): removed remnants of calls
+	to `working-*' functions; call `progress-reporter-pulse' just
+	before `progress-reporter-done'
+
+2009-09-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-compat.el: only define pulsing progress reporter when
+	Emacs does not have one itself
+	(header): downcased keywords
+	(make-pulsing-progress-reporter): renamed
+	`make-progress-reporter-pulse' ->
+	`make-pulsing-progress-reporter'; cosmetic changes; explanatory
+	comment
+	(progress-reporter-pulse): added documentation string
+	Suggested by Phil Hagelberg
+
+	* rudel-compat.el (progress-pulse-values): new variable; indicator
+	strings used by pulsing progress reporter
+	(make-progress-reporter-pulse): new function; creates pulsing
+	progress reporter
+	(progress-reporter-pulse): new function; updates pulsing progress
+	reporter
+	Suggested by Phil Hagelberg
+
+2009-09-29  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-server-state-before-join::rudel-obby/net6_client_login):
+	accept two additional arguments: global-password and user-password
+
+	* rudel-session-initiation.el (rudel-configured-sessions):
+	improved documentation string
+
+2009-09-29  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (REQUIREMENTS): wording
+	(INSTALLING): mention other things that cause rudel to be
+	autoloaded; minor cosmetic changes
+	(COMPILING): fixed filename compile.el -> rudel-compile.el
+
+	* rudel-compile.el (header): added copyright and meta data
+	(code): let-bind rudel-dir; call `byte-recompile-directory' just
+	once since it operates recursively
+
+2009-09-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el (header): better documentation
+	(require rudel-state-machine): now required for state machine
+	style handling of client connections
+	(require rudel-obby-state): now required; provides base class for
+	states
+	(rudel-obby-server-state-new): new class; client connection state
+	new
+	(rudel-obby-server-state-encryption-negotiate): new class; client connection state
+	for negotiating encryption
+	(rudel-obby-server-state-before-join): new class; client connection state
+	for waiting for login request
+	(rudel-obby-server-state-new): new class; client connection state
+	entered after session setup and joining is complete
+	(rudel-obby-server-connection-states): new variable; list of
+	states and their symbolic names
+	(rudel-obby-client): now derived from rudel-state-machine
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-connect-info):
+	check for :global-password and :user-password correctly; do not
+	put them into the list when they are ""
+	(rudel-obby-backend::rudel-connect): comment
+
+	* rudel-session-initiation.el
+	(rudel-configured-sessions-backend::rudel-discover): let
+	`rudel-session-initiation-adjust-info' do the heavy lifting
+	(rudel-session-initiation-adjust-info): new function; adjust
+	arguments that need adjusting in a session information property
+	list
+
+	* rudel-session-initiation.el (rudel-configured-sessions): more
+	precise specification of the customization type
+
+2009-09-27  Phil Hagelberg <technomancy@gmail.com>
+
+	* compile.el: renamed compile.el -> rudel-compile.el
+
+	* INSTALL: Mention new install process using compile.el and
+	rudel-loaddefs.el.
+
+	* rudel-loaddefs.el: Autoload rudel as one unit instead of
+	piece-by-piece. Remove eieio dependency from autoloads.
+
+	* compile.el: Perform compilation from Elisp
+
+	* Makefile: Remove error-prone CEDET-autogenerated build scripts.
+
+2009-09-27  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-session-initiation.el
+	(rudel-configured-sessions-backend::rudel-discover): fixed a bug
+	that dropped the last option in each configured session
+
+	* rudel-session-initiation.el (rudel-configured-sessions): new
+	customization option; contains a list of session information lists
+	(rudel-ask-protocol-backend::initialize-instance): maybe call next
+	method
+	(rudel-configured-sessions-version): new constant; version of the
+	configured-sessions backend
+	(rudel-configured-sessions-backend): new class;
+	configured-sessions backend
+	(rudel-configured-sessions-backend::initialize-instance): new
+	method; set version slot
+	(rudel-configured-sessions-backend::rudel-discover): new method;
+	"discover" configured sessions
+	(autoload rudel-add-backend): register
+	rudel-configured-sessions-backend as a protocol backend
+
+	* rudel-chat.el (rudel-chat-buffer-name): new constant; name chat
+	log buffer
+	(rudel-chat-handle-buffer): raise buffer when logging a chat
+	message
+
+	* rudel-debug.el (header): fixed meta-data and license
+	(rudel-debug-sent-data-face): added documentation string
+	(rudel-debug-received-data-face): added documentation string
+	(rudel-debug-received-processed-data-face): added documentation
+	string
+	(rudel-debug-state-face): added documentation string
+	(rudel-debug-special-face): added documentation string
+	(rudel-suspend-session-socket): added documentation string
+	(rudel-resume-session-socket): added documentation string
+
+	* obby/rudel-obby-util.el (rudel-obby-dispatch): use
+	`display-warning' instead of `warn'
+	* obby/rudel-obby-state.el (rudel-obby-state::rudel-accept): use
+	`display-warning' instead of `warn'
+	(rudel-obby-document-handler::rudel-obby/obby_document): use
+	`display-warning' instead of `warn'
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_part): use
+	`display-warning' instead of `warn'
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/record):
+	use `display-warning' instead of `warn'
+	* rudel-backend.el (rudel-backend-factory::rudel-load-backends):
+	use `display-warning' instead of `warn'
+
+	* obby/rudel-obby-client.el (require rudel-chat): used when
+	handling chat messages
+	(rudel-obby-client-state-idle::rudel-obby/obby_message): new
+	method; handles obby 'message' messages by dispatching to
+	`rudel-chat-dispatch-message'
+	* rudel-chat.el (whole file): new file; handling of incoming chat
+	messages
+	* Project.ede (target rudel): added rudel-chat.el
+	* Makefile (target rudel_LISP): added rudel-chat.el
+
+2009-09-26  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-state.el (rudel-obby-server-connection-state):
+	new class; base class for server connection states
+	(rudel-obby-server-connection-state::rudel-broadcast): new method;
+	broadcast message to a set of receivers
+
+2009-09-25  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-connect): new
+	error state they-finalized; handle join-failed error specially
+	* obby/rudel-obby-client.el (rudel-obby-client-state-join-failed):
+	improved comments
+	(rudel-obby-client-state-they-finalized): new state class; used to
+	indicate that the connection was closed by the peer
+	(rudel-obby-client-connection-states): added they-finalized
+	(rudel-obby-connection::rudel-close): switch state machine to
+	they-finalized
+	(rudel-obby-connection::rudel-subscribe-to): new error state
+	they-finalized
+
+	* rudel.el (rudel-client-session::connection): allow nil value
+	(rudel-client-session::rudel-end): only try to disconnect the
+	connection if it is non-nil; ignore errors during disconnect
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-encryption-start::rudel-obby/net6_encryption_begin):
+	do not require rudel-tls; do not try to start TLS encryption if
+	the connection does not support it
+	* rudel-tls.el (rudel-tls-make-process): mark process as
+	supporting TLS encryption
+
+	* obby/rudel-obby-state.el (rudel-obby/net6_ping): return nil to
+	prevent erratic behavior of the state machine
+
+	* rudel-interactive.el (rudel-allocate-buffer-clear-existing):
+	added missing whitespace in prompt string
+
+2009-09-24  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-tls.el (rudel-tls-start-tls): changed displayed message
+	(rudel-tls-wait-init): ignore all lines until "- Simple Client
+	Mode.*" is received; then switch back old filter
+	(rudel-tls-wait-handshake): ignore all lines until "-
+	Compression.*" is received; then switch to established filter
+	(rudel-tls-established): do not ignore any lines other than
+	"- Peer has closed the GNUTLS connection"
+
+	* obby/rudel-obby.el (rudel-ask-connect-info): ask for global and
+	user passwords
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-joining::rudel-enter): transmit global
+	and user passwords when available
+
+	* obby/rudel-obby-errors.el
+	(rudel-obby-error-wrong-global-password): fixed error code
+	(rudel-obby-error-wrong-user-password): fixed error code
+	(rudel-obby-error-protocol-version-mismatch): fixed error code
+	(rudel-obby-error-not-encrypted): fixed error code
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-joining::rudel-obby/net6_login_failed):
+	recognize wrong global/user password error codes
+
+	* obby/rudel-obby-debug.el (whole file): new file; debugging
+	functions for the obby backend
+	* rudel-debug.el (whole file): new file; debugging functions
+
+	* obby/rudel-obby-errors.el
+	(rudel-obby-error-wrong-global-password): new constant; error code
+	for wrong global password
+	(rudel-obby-error-wrong-user-password): new constant; error code
+	for wrong user password
+	(rudel-obby-error-protocol-version-mismatch): new constant; error
+	code for protocol version mismatch
+	(rudel-obby-error-not-encrypted): new constant; error code for not
+	encrypted
+
+	* Project.ede (target rudel): added rudel-transport.el
+	* Makefile (target rudel_LISP): added rudel-transport.el
+	* rudel-transport.el (whole file): new file; interface for
+	transport backends
+
+2009-09-20  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-remote-operation): added byte -> char
+	conversion before the operation is applied to the server-side
+	document; updated comments
+
+	* obby/rudel-obby-server.el (rudel-obby-client::rudel-broadcast):
+	cosmetic changes
+	(rudel-obby-client::rudel-obby/net6_client_login): cosmetic
+	changes; improved comments
+	(rudel-obby-client::rudel-obby/obby_document): changed
+	documentation string; cosmetic changes
+	(rudel-obby-client::rudel-obby/obby_document/record): added a
+	comment
+	(rudel-obby-client::rudel-remote-operation): improved comments
+
+	* obby/rudel-obby-server.el (header): added header comment
+	(rudel-obby-client::rudel-obby/obby_document_create): changed
+	documentation comment
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): changed
+	documentation comment; cosmetic changes
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe):
+	cosmetic changes
+	(rudel-obby-server::initialize-instance): do not run :after; call
+	next method
+	(rudel-obby-server::rudel-broadcast): signal wrong-type-argument
+	instead of just error; cosmetic changes
+	(rudel-obby-server::rudel-check-username-and-color): changed
+	comments
+	(rudel-obby-server::object-print): new method; generate string
+	representation with number of clients
+
+2009-09-19  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins):
+	construct the operation and use	`rudel-remote-operation'
+	(rudel-obby-client::rudel-obby/obby_document/record/del):
+	construct the operation and use `rudel-remote-operation'
+	(rudel-obby-client::rudel-remote-operation): new method; transform
+	and apply an operation object to the server-side document; send
+	operation to all other clients
+	(rudel-obby-server::rudel-broadcast): cosmetic changes
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/del): swapped
+	local and remote revisions in the operation name to be consistent
+	with record/ins; does not affect behavior
+
+2009-09-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (rudel-header-subscriptions--update-from-document):
+	force mode line update
+	(rudel-header-subscriptions--update-from-buffer): force mode line
+	update
+	(rudel-header-subscriptions-minor-mode): force mode line update
+
+	* rudel-mode.el
+	(rudel-mode-line-publish-state-unpublished-string): new
+	customization option; string used to indicate that a buffer is not
+	published
+	(rudel-mode-line-publish-state-published-string): new
+	customization option; string used to indicate that a buffer is
+	published
+	(rudel-mode-line-publish-state--update-string): use
+	`rudel-mode-line-publish-state-unpublished-string' and
+	`rudel-mode-line-publish-state-unpublished-string'
+
+	* rudel.el (rudel-session::end-hook): new slot; stores handlers of
+	the end hook
+	(rudel-session::rudel-end): run end hook
+	(rudel-session::rudel-join-session): install handler on session
+	end hook to set `rudel-current-session' to nil
+	(rudel-session::rudel-end-session): no need to run
+	rudel-session-end-hook or reset `rudel-current-session'
+	* rudel-hooks.el (rudel-hooks--session-start): add handler for the
+	end hook of the session
+	(rudel-hooks--session-end): remove the handler from end hook of
+	the session; run the rudel-session-end hook
+	(rudel-hooks--install-handlers): do install handler for
+	rudel-session-end hook; this is now done by installing the in the
+	session object
+	(rudel-hooks--uninstall-handlers): no need to remove
+	rudel-session-end hook
+
+	* rudel-util.el (rudel-socket-owner::rudel-state-change): cover
+	more states
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document_remove):
+	implemented, was stub; untested though
+
+2009-09-10  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_join): check
+	whether we have a user object for the specified user id; modify
+	the existing object if there is one
+
+2009-09-09  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* zeroconf/Makefile (whole file): regenerated
+	* wave/Makefile (whole file): regenerated
+	* Makefile (target all): build target doc
+	(target doc): new target; build documentation
+	(target tags): build target tags in doc directory
+	(target dist): build target dist in doc directory
+
+2009-09-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* telepathy/rudel-telepathy.el (header): fixes
+	(require rudel-backend): required, since we define a backend
+	(require rudel-transport): it is a transport backend
+	(class rudel-telepathy-backend): derived from
+	rudel-transport-backend
+	(rudel-telepathy-backend::initialize-instance): new method; set
+	version slot
+	(autoloading): upgraded to new backend registration style
+
+	* INSTALL (REQUIREMENTS): mention Avahi
+
+2009-09-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (require rudel-util): required for `rudel-hook-object'
+
+	* rudel-util.el (property svn:executable): removed property
+	* rudel-overlay.el (property svn:executable): removed property
+
+	* doc/Project.ede (whole file): new file; project file for the
+	documentation directory
+	* doc/Makefile (whole file): new file; generated Makefile for the
+	documentation directory
+	* doc/card.tex (whole file): new file; reference card for Rudel;
+	source
+	* doc/card.pdf (whole file): new file; reference card for Rudel;
+	PDF
+
+2009-09-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (rudel-read-document): added comment
+	(rudel-allocate-buffer-clear-existing): handle the case in which
+	case a buffer with the desired name exists and is attached to a
+	different document; added some comments
+
+	* rudel-mode.el (header): list all provided modes; bump version
+	(require rudel-hooks): required for global hooks
+	(rudel-mode-line-publish-state-string): new variable; buffer
+	local, holds publish state string for buffer
+	(rudel-mode-line-publish-state--add-indicator-to-mode-line): new
+	function; add publish state indicator to mode line
+	(rudel-mode-line-publish-state--remove-indicator-from-mode-line):
+	new function; remove publish state indicator from mode line
+	(rudel-mode-line-publish-state--update-string): new function;
+	update publish state indicator according to buffer state
+	(rudel-mode-line-publish-state--document-attach): new function;
+	handle document attaching to buffer
+	(rudel-mode-line-publish-state--document-detach): new function;
+	handle document detaching from buffer
+	(rudel-mode-line-publish-state-minor-mode): new minor mode;
+	displays publish state of buffer in mode line
+	(global-rudel-mode-line-publish-state-mode): new minor mode;
+	globalization of `rudel-mode-line-publish-state-minor-mode'
+	(rudel-minor-keymap): menu entries for buffer local and global
+	mode line publish state mode
+
+	* rudel.el (require rudel-hooks): required or hook variables
+	(rudel-session-start-hook): moved to rudel-hooks.el
+	(rudel-session-end-hook): moved to rudel-hooks.el
+	* rudel-hooks.el (whole file): new file; contains hook variables
+	and mapping from object hooks to global hooks
+	* Project.ede (target rudel): added file rudel-hooks.el
+	* Makefile (target rudel_LISP): added file rudel-hooks.el
+
+2009-09-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (rudel-header-subscriptions-minor-mode): improved
+	documentation string
+
+2009-08-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* zeroconf/Makefile (whole file): new file; generated Makefile for
+	the zeroconf subproject
+
+	* wave/rudel-wave.el (whole file): new file; main class of the
+	wave backend
+	* wave/Project.ede (whole file): new file; project file for the
+	wave subproject
+	* wave/Makefile (whole file): new file; generated Makefile for the
+	wave subproject
+	* Project.ede (target autoloads): added wave directory
+	* Makefile (LOADDIRS): added wave and zeroconf directories
+	(VERSION): bumped to 0.2
+	(target all): added wave and zeroconf
+	(tags): descend into zeroconf and wave directories
+	(dist): descend into zeroconf and wave directories
+
+2009-08-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-change-color): run the change hook of the self
+	user
+
+	* rudel-overlay.el (rudel-overlay-set-face-attributes): check the
+	face actually exists
+
+2009-08-27  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (rudel-header-subscriptions-use-images): new
+	variable; controls whether images are used when formatting user
+	names
+	(rudel-header-subscriptions-separator): new variable; separator
+	used when formatting user names
+	(rudel-header-subscriptions--make-format): new function; make a
+	format object for header line
+	(rudel-header-subscriptions--update-from-document): new function;
+	update header line from document
+	(rudel-header-subscriptions--update-from-buffer): new function;
+	update header line from buffer
+	(rudel-header-subscriptions--options-changed): new function;
+	update header line in all buffers that have
+	rudel-header-subscriptions-minor-mode enabled after customization
+	option change
+	(rudel-header-subscriptions--user-change): new function; update
+	header line after a user object change
+	(rudel-header-subscriptions--add-user): new function; watch newly
+	subscribed user and update header line
+	(rudel-header-subscriptions--remove-user): new function; stop
+	watching user and update header line
+	(minor mode rudel-header-subscriptions-minor-mode): new minor
+	mode; display subscribed users in buffer's header line
+	(rudel-header-subscriptions--attach): new function; enable header
+	subscription minor mode when attaching
+	(rudel-header-subscriptions--detach): new function; disable header
+	subscription minor mode when detaching
+	(rudel-header-subscriptions--add-document): new function; monitor
+	attaching/detaching of new document
+	(rudel-header-subscriptions--remove-document): new function; stop
+	monitoring attaching/detaching of new document
+	(rudel-header-subscriptions--session-start): new function; watch
+	documents being added/removed to/from the session
+	(rudel-header-subscriptions--session-end): new function; stop
+	watching documents being added/removed to/from the session
+	(minor mode global-rudel-header-subscriptions-mode): global minor
+	mode that controls `rudel-header-subscriptions-minor-mode' in
+	buffers
+	(advice global-rudel-header-subscriptions-mode): controls
+	adding/removing watches for added/removed documents when the
+	global mode is enabled/disabled
+	(rudel-minor-keymap): Added entries for
+	`rudel-header-subscriptions-minor-mode' and
+	`global-rudel-header-subscriptions-mode'
+
+2009-08-26  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* . (property svn:ignore): added patterns
+	* jupiter (property svn:ignore): added patterns
+	* obby (property svn:ignore): added patterns
+
+	* rudel.el (rudel-session::add-user-hook): new slot; add user hook
+	function list
+	(rudel-session::remove-user-hook): new slot; remove user hook
+	function list
+	(rudel-session::add-document-hook): updated documentation string
+	(rudel-session::remove-document-hook): updated documentation
+	string
+	(rudel-session::rudel-add-user): run add user hook
+	(rudel-session::rudel-remove-user): run remove user hook
+
+	* rudel.el (rudel-session-start-hook): new variable; session start
+	hook function list
+	(rudel-session-end-hook): new variable; session end hook function
+	list
+	(rudel-join-session): run session start hook
+	(rudel-end-session): run session end hook
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document_create): call
+	`generate-new-buffer-name' on complete buffer name; not just name
+	part
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): send
+	number of bytes instead of number of characters
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-document-synching::remaining-bytes):
+	fixed initarg num-bytes -> remaining-bytes
+
+	* rudel.el (rudel-session::add-document-hook): new slot; run when
+	a document gets added to the session
+	(rudel-session::remove-document-hook): new slot; run when a
+	document gets removed from the session
+	(rudel-session::rudel-add-document): run add document hook
+	(rudel-session::rudel-remove-document): run remove document hook
+	(rudel-document::unsubscribe-hook): fixed initarg subscribe-hook
+	-> unsubscribe-hook
+
+2009-08-25  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* www/index.html (Download): link to http://bazaar-vcs.org;
+	improved wording
+
+	* www/index.html (Download): changed link to source; add browse
+	source link for bzr
+
+	* INSTALL (REQUIREMENTS): precise CEDET release version
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_user_colour): run change hook
+	after setting slot
+	(rudel-obby-server::rudel-remove-client): run change hook after
+	setting slot
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/net6_client_part): run
+	change hook after setting slots
+	(rudel-obby-client-state-idle::rudel-obby/obby_user_colour): run
+	change hook after setting slot
+	* rudel.el (class rudel-user): derive from `rudel-hook-object'
+	(rudel-user::change-hook): new slot; stores change hook functions
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_user_colour): cosmetic changes
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): use
+	`rudel-add-user'
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): use
+	`rudel-remove-user'
+	(rudel-obby-server::rudel-check-username-and-color): whitespace
+	fixes
+
+2009-08-23  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document::attach-hook): new slot; attach hook
+	function list
+	(rudel-document::detach-hook): new slot; detach hook function list
+	(rudel-document::rudel-attach-to-buffer): run hook `attach-hook'
+	(rudel-document::rudel-detach-from-buffer): run hook `detach-hook'
+	(rudel-document::rudel-add-user): improved documentation string
+	(rudel-document::rudel-remove-user): improved documentation string
+
+	* obby/rudel-obby.el
+	(rudel-obby-user::eieio-speedbar-object-buttonname): fixed typo
+
+2009-08-21  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/subscribe):
+	call `rudel-add-user'
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/unsubscribe):
+	call `rudel-remove-user'
+	* rudel.el (class rudel-document): mixin rudel-hook-object
+	(rudel-document::subscribe-hook): new slot; subscribe-hook
+	function list
+	(rudel-document::unsubscribe-hook): new slot; unsubscribe-hook
+	function list
+	(rudel-document::rudel-add-user): new method; add user to list of
+	subscribed users and run subscribe-hook
+	(rudel-document::rudel-remove-user): new method; remove user from
+	list of subscribed users and run unsubscribe-hook
+
+	* obby/rudel-obby.el (header): cosmetic changes
+	(include rudel-icons): `rudel-display-string' uses icons
+	(rudel-obby-user::eieio-speedbar-object-buttonname): use
+	`rudel-display-string'
+	(rudel-obby-user::rudel-display-string): new method; textual
+	representation of user object
+	(rudel-obby-parse-message): cosmetic changes
+	* rudel.el (include rudel-icons): `rudel-display-string' uses
+	icons
+	(rudel-user::rudel-display-string): new method; textual
+	representation of user object
+
+	* rudel-util.el (rudel-hook-object): new class; abstract mixin for
+	classes that offer hooks
+	(rudel-hook-object::object-add-hook): new method; add function to
+	hook list
+	(rudel-hook-object::object-remove-hook): new method; remove
+	function from hook list
+	(rudel-hook-object::object-run-hook-with-args): new method; run
+	hook functions
+
+2009-08-20  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* icons/plaintext.svg (new file): plaintext icon
+	* icons/person.svg (new file): person icon
+	* icons/encrypted.svg (new file): encrypted icon
+	* icons/document.svg (new file): document icon
+	* icons/disconnected.svg (new file): disconnected icon
+	* icons/connected.svg (new file): connected icon
+	* rudel-icons.el (new file): loading icons
+	* Project.ede (target rudel): added rudel-icons.el
+
+2009-08-19  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-join-session): renamed local variable backend to
+	session-initiation-backend
+
+2009-08-17  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-state.el (rudel-obby-state::rudel-accept): fixed
+	format of warning message
+
+	* rudel-state-machine.el (require working): needed by
+	`rudel-state-wait'
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_user_colour): set
+	face attributes
+	* rudel.el (rudel-change-color): set face attributes
+	* rudel-overlay.el (rudel-overlay-make-face): use
+	`rudel-overlay-set-face-attributes'
+	(rudel-overlay-set-face-attributes): new function; set face
+	attributes
+
+	* rudel-overlay.el (rudel-overlay-author-set-properties): call
+	`rudel-overlay-make-face-symbol'
+	(rudel-overlay-make-face-symbol): new function; return face symbol
+
+2009-08-16  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-overlay.el (rudel-overlay-author-display): option that
+	controls display of author overlays
+	(rudel-make-author-overlay): call
+	`rudel-overlay-author-set-properties' to set the overlay
+	properties
+	(rudel-overlay-author-set-properties): new function; set overlay
+	properties; respects rudel-overlay-author-display
+	(rudel-overlay-author-update): new function; update overlay
+	properties based on associated user object
+	(rudel-overlay-options-changed): new function; call
+	`rudel-overlay-author-update' on all Rudel overlays in all buffers
+	* rudel-mode.el (header): cosmetic changes
+	(rudel-minor-menu): added menu entry to toggle display of author
+	overlays
+
+	* rudel-overlay.el (rudel-make-author-overlay): use `intern'
+	instead of `make-symbol' when allocating the face name; this way,
+	faces can actually be created lazily
+	(rudel-overlay-make-face): call `make-face' for the new face
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-document-synching::object-print): fixed
+	slot name remaining-bytes
+
+	* rudel.el (rudel-host-session): the backend object is the cdr of
+	the result of `rudel-backend-choose'
+
+2009-08-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* telepathy/rudel-telepathy.el (header): added file comment
+	* obby/rudel-obby-state.el (header): fixed email address
+	(whole file): whitespace fixes
+	* jupiter/jupiter.el (header): cosmetic changes
+	(whole file): whitespace fixes
+	* rudel-util.el (header): cosmetic changes
+	* rudel-mode.el (header): cosmetic changes
+	* rudel-errors.el (header): fixed type
+	(whole file): whitespace fixes
+
+	* obby/rudel-obby.el (rudel-ask-connect-info): added optional
+	argument info; do not ask for things that are already specified in
+	info
+	(autoload): register obby service with the Zeroconf backend
+	* zeroconf/rudel-zeroconf.el (new file): Zeroconf session
+	initiation for Rudel
+	* zeroconf/Project.ede (new file): subproject zeroconf
+	* rudel.el (rudel-join-session): call `rudel-ask-info' to augment
+	connect info
+	* Project.ede (target autoloads): added directory zeroconf
+	* INSTALL (INSTALLING): mention zeroconf subdirectory
+	(COMPILING): mention zeroconf target
+
+	* rudel-backend.el (rudel-backend-factory::rudel-get-backend):
+	return backend as a cons
+	(rudel-backend-get): new function; convenience function for
+	getting backends
+
+	* obby/rudel-obby.el (header): extended commentary and history
+	(rudel-obby-version): bumped to 0.2
+	(rudel-obby-backend::initialize-instance): set :version slot in
+	constructor instead of using obsolete lambda expression in
+	initform
+
+2009-08-14  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* Project.ede (project rudel): bumped version to 0.2; added
+	mailing list and path to web files
+
+	* rudel-backend.el (rudel-backend-factory): do not initialize
+	backends with lambda expression
+	(rudel-backend-factory::initialize-instance): new method;
+	initialize backends
+	(rudel-backend-cons-p): use `object-p' instead of `eieio-object-p'
+	(rudel-backend-dump): changed format slightly
+
+2009-08-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (include rudel-session-initiation): required for
+	`rudel-join-session'
+	(rudel-join-session): mostly rewritten; moved user interaction to
+	`interactive' form
+	* rudel-session-initiation.el (new file): session initiation
+	backend interface and high-level programming interface
+	* Project.ede (target rudel): added rudel-session-initiation.el
+	* Makefile (rudel_LISP): added rudel-session-initiation.el
+
+	* rudel-interactive.el (rudel-read-session): discriminate sessions
+	vs. session generating objects using `rudel-backend-cons-p'
+
+	* rudel-backend.el (rudel-backend-cons-p): new function; checks
+	whether a cons consists of a backend name and object
+
+2009-08-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (rudel-read-session): new function; read
+	session by name and return it
+
+	* rudel-interactive.el (rudel-read-backend): argument backends is
+	no longer optional; always return a cons of backend name and
+	object; updated documentation string
+	(whole file): whitespace fixes
+	* rudel-backend.el (rudel-backend-choose): always return a cons of
+	backend name and object; updated documentation string
+
+2009-08-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (file header): added project URL
+	(whole file): improved some comments
+
+2009-08-10  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (include eieio-base): needed for eieio-named
+
+2009-08-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-state-machine.el (header section commentary): updated
+	(rudel-state-machine::initialize-instance): use
+	`rudel--switch-to-return-value' to allow immediate switch to
+	another state
+	(rudel-state-machine::rudel-switch): use
+	`rudel--switch-to-return-value' to switch to successor state
+	(rudel-state-machine::rudel--switch-to-return-value): new function
+	switch to successor state for different kinds of specifications of
+	the successor state
+
+2009-08-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (require rudel-backend): now necessary
+	(require rudel-protocol): now necessary
+	(class rudel-obby-backend): now derived from `rudel-backend';
+	autoloaded
+	(autoloading): use `rudel-add-backend'
+	* rudel.el (require rudel-backend): backends have their own file
+	(class rudel-backend): moved to rudel-backend.el
+	(rudel-load-backends): moved to rudel-backend.el
+	(rudel-suitable-backends): moved to rudel-backend.el
+	(rudel-choose-backend): moved to rudel-backend.el
+	(rudel-join-session): use `rudel-backend-choose'
+	(rudel-host-session): use `rudel-backend-choose'
+
+	* rudel-protocol.el (new file): interface for Rudel protocol
+	backends
+	* Project.ede (target rudel): added rudel-protocol.el
+	* Makefile (rudel_LISP): added rudel-protocol.el
+
+	* rudel-backend.el (rudel-backend-factory::rudel-get-backend):
+	improved documentation string
+	(rudel-backend-factory::rudel-suitable-backends): improved
+	documentation string
+	(rudel-backend-suitable-backends): improved documentation string
+	(rudel-backend-choose): When only one backend matches, do not
+	check interactivity using `interactive-p', that does not work;
+	call `sit-for' correctly
+
+2009-08-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/Makefile (whole file): regenerated; reflects CEDET
+	changes
+	* rudel-backend.el (new file): generic backend management, query
+	and loading functions
+	* Project.ede (target rudel): added rudel-backend.el to sources
+	* Makefile (rudel_LISP): added rudel-backend.el
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): use slot
+	:object-name instead of calling object-name-string
+	(rudel-obby-server::rudel-add-context): use slot :object-name
+	instead of calling object-name-string
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-idle::rudel-obby/obby_document/rename):
+	use slot :object-name instead of calling object-name-string
+	(rudel-obby-connection::rudel-add-context): use slot :object-name
+	instead of calling object-name-string
+	(rudel-obby-connection::rudel-publish): use slot :object-name
+	instead of calling object-name-string
+	* rudel.el (class rudel-user): added base class eieio-named for
+	virtual slot :object-name; made abstract
+	(class rudel-document): added base class eieio-named for virtual
+	slot :object-name
+	* rudel-overlay.el (rudel-make-author-overlay): use slot
+	:object-name instead of calling object-name-string
+
+	* rudel-state-machine.el
+	(rudel-state-machine::initialize-instance): use &rest slots
+	instead of just slots
+
+2009-07-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document::rudel-detach-from-buffer): call
+	`rudel-overlays-remove-all'; remove `rudel-unpublish-buffer' hook
+	early
+	* rudel-overlay.el (rudel-overlays-remove-all): new function;
+	remove all overlays from the current buffer
+	(whole file): cosmetic changes; typo fixes; whitespace fixes
+
+	* obby/rudel-obby.el (rudel-obby-document::rudel-unique-name):
+	Check `next-method-p' before calling the next method
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::initialize-instance): Check
+	`next-method-p' before calling the next method
+	(rudel-obby-connection::rudel-register-state): Check
+	`next-method-p' before calling the next method
+	(rudel-obby-connection::rudel-disconnect): Check
+	`next-method-p' before calling the next method
+	* rudel.el (rudel-client-session::rudel-end): Check
+	`next-method-p' before calling the next method
+
+2009-07-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-connect): only
+	start the network process after everything is ready; wait for the
+	connection state machine to reach a success or error state
+	(rudel-obby-backend::rudel-host): cosmetic changes
+	(class rudel-obby-user): cosmetic changes
+	* rudel.el (rudel-join-session): reversed order of creation for
+	session and connection; do not catch errors to give error messages
+	a chance
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	cosmetic changes
+	(whole file): whitespace fixes
+
+	* rudel.el (rudel-session::rudel-find-user): added documentation
+	string; cosmetic changes
+	(rudel-session::rudel-find-document): added documentation string;
+	cosmetic changes
+	(whole file): whitespace fixes
+
+2009-07-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-speedbar.el (eieio-speedbar-object-buttonname): use
+	`rudel-unique-name' instead of `object-name-string'
+
+	* obby/rudel-obby-state.el (rudel-enter): return nil
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-client-state-joining::rudel-enter): return nil
+	(rudel-obby-client-state-join-failed::rudel-enter): return nil
+	(rudel-obby-client-state-session-synching::rudel-enter): return
+	nil
+	(rudel-obby-client-state-session-synching::object-print): new
+	method; add number of remaining items to string representation
+	(rudel-obby-client-state-subscribing::rudel-enter): nil
+	(rudel-obby-client-state-document-synching::rudel-enter): nil
+	(rudel-obby-client-state-document-synching::object-print): new
+	method; add number of remaining bytes to string representation
+
+2009-07-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-util.el (with-parsed-arguments): added debug
+	declaration
+	(whole file): whitespace fixes
+	* rudel-util.el (rudel-assemble-line-fragments): added debug
+	declaration
+	(rudel-loop-lines): added debug declaration
+	(rudel-loop-chunks): fixed documentation string; added debug
+	declaration
+
+	* rudel-state-machine.el (rudel-no-start-state): new error symbol
+	(rudel-state-machine::initialize-instance): try hard to find a
+	suitable start sate; call `rudel-switch' instead of just
+	`rudel-enter'
+	(rudel-state-machine::rudel-switch): always return the new current
+	state; accept successor state from `rudel-enter'
+	(rudel-state-machine::object-print): new method; add current state
+	of state machine to string representation
+	(rudel-state-machine::rudel-state-wait): whitespace fixes
+
+2009-07-07  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (class rudel-obby-backend): better
+	documentation string
+	(rudel-obby-backend::rudel-ask-connect-info): added documentation
+	string
+	(rudel-obby-backend::rudel-connect): added documentation string
+	(rudel-obby-backend::rudel-ask-host-info): added documentation
+	string
+	(rudel-obby-backend::rudel-host): added documentation string
+	(rudel-obby-backend::rudel-make-document): added documentation
+	string
+	(rudel-obby-send): cosmetic changes
+	(whole file): whitespace fixes
+
+2009-07-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (REQUIREMENTS): added Emacs itself and GNUTls
+
+	* rudel-tls.el (rudel-tls-start-tls): added a message
+	(rudel-tls-wait-handshake): switch to filter
+	`rudel-tls-established' instead of restoring the original filter
+	(rudel-tls-established): new function; filters GNUTls messages in
+	encrypted connections
+	(whole file): whitespace fixes
+
+2009-07-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* README (INTRODUCTION): extended a bit
+	(JOINING A SESSION): added prompt/input example and an explanation
+	of encryption issues in the obby backend
+	(KNOWN BUGS): new section; no known bugs yet, though
+
+2009-06-17  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el (require rudel-state-machine): the
+	connection now is a state machine
+	(require rudel-obby-errors): used when analyzing login failures
+	(require rudel-obby-state): useful base classes for states
+	(rudel-obby-client-state-new): new class; initial state of new
+	connections
+	(rudel-obby-client-state-encryption-negotiate): new class;
+	first encryption state
+	(rudel-obby-client-state-encryption-start): new class; second
+	encryption state
+	(rudel-obby-client-state-joining): new class
+	(rudel-obby-client-state-join-failed): new class; entered after
+	failed login attempt
+	(rudel-obby-client-state idle): new class; default state of
+	established connections
+	(rudel-obby-client-state-session-synching): new class;
+	synchronizing session state to client
+	(rudel-obby-client-state-subscribing): new class; first state of
+	document subscription
+	(rudel-obby-client-state-document-synching): new class;
+	synchronizing document state to client
+	(rudel-obby-client-connection-states): new variable; alist of
+	name symbols and associated state classes
+	(rudel-obby-connection::initialize-instance): register states
+	(rudel-obby-connection::rudel-register-state): new method; set
+	connection slot of state to its connection
+	(rudel-obby-connection::rudel-add-context): cleanup
+	(rudel-obby-connection::rudel-message): dispatch message using
+	`rudel-accept'
+	(rudel-obby-connection::rudel-subscribe-to): initiate subscription
+	by switching to state 'subscribing'
+
+	* obby/rudel-obby-state.el (rudel-obby-document-handler): new
+	class; mixin class that provides handling of obby 'document'
+	messages
+
+	* rudel-state-machine.el
+	(rudel-state-machine::initialize-instance): find start state in
+	slots and switch into it
+	(while-file): whitespace fixes
+
+2009-06-15  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* www/index.html (section download): fixed link to download area
+	(whole file): whitespace cleanup
+
+	* obby/rudel-obby-state.el (new file): finite state machine states
+	for the rudel backend
+	* obby/Project.ede (target rudel/obby): added rudel-obby-state.el
+	* obby/Makefile (target obby_LISP): added rudel-obby-state.el
+
+	* rudel-util.el (require rudel-errors): required for dispatch
+	errors
+	(symbol rudel-dispatch-error): new condition symbol for dispatch
+	errors
+	(rudel-dispatch): new function; dispatch to method based on method
+	name
+	(whole file): whitespace fixes
+
+2009-06-14  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-mode.el (global-rudel-minor-mode): removed; the variable
+	is created by `define-minor-mode'
+	(minor-mode-alist): managed by `define-minor-mode'
+
+	* rudel-mode.el (require easy-mmode): used to define global rudel
+	minor mode
+	(rudel-minor-keymap): cosmetic changes
+	(global-rudel-minor-mode): use `define-minor-mode' to define the
+	mode
+	(whole file): whitespace cleanup
+
+	* rudel-telepathy.el (whole file): moved to
+	telepathy/rudel-telepathy.el
+	* telepathy/rudel-telepathy.el (whole file): moved from
+	rudel-telepathy.el
+
+	* obby/rudel-obby-server.el (whole file): whitespace cleanup
+	* obby/rudel-obby-client.el (require rudel-obby): removed;
+	unnecessary
+	(rudel-obby-connection::initialize-instance): use &rest for `slots'
+	argument; cosmetic changes
+	(rudel-obby-connection::rudel-change-color-): use own `rudel-send'
+	method instead of the socket's
+	(rudel-obby-connection::rudel-subscribe-to): cosmetic changes
+	(rudel-obby-connection::rudel-unsubscribe-from): cosmetic changes
+	(rudel-obby-connection::rudel-local-operation): cosmetic changes
+	(whole file): whitespace cleanup
+
+2009-06-13  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-errors.el (new file): error data
+	* rudel-state-machine.el (new file): a simple finite state machine
+	implementation
+	* Project.ede (target rudel): added rudel-errors.el and
+	rudel-state-machine.el
+	* Makefile (target rudel_LISP): added rudel-errors.el and
+	rudel-state-machine.el
+
+2009-06-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el (require rudel-obby-errors): now
+	required
+	(rudel-obby-client::rudel-obby/net6_client_login): check username
+	and color before adding the client
+	(rudel-obby-server::rudel-check-username-and-color): new method;
+	make sure username and color are valid and there are no duplicates
+	* obby/rudel-obby-errors.el (new file): error data for the obby
+	backend
+	* obby/Project.ede (rudel/obby): added rudel-obby-errors.el
+	* obby/Makefile (obby_LISP): added rudel-obby-errors.el
+
+	* rudel.el (rudel-user::rudel-color): added accessor `rudel-color'
+
+	* obby/rudel-obby-server.el (require cl): required
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): send suffices
+	of synchronized documents
+
+2009-06-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document_create): send
+	document/rename message to client when the document suffix changes
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_user_colour): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document_create): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/record): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/record/ins): use
+	`with-parsed-arguments'
+	(rudel-obby-client::rudel-obby/obby_document/record/del): use
+	`with-parsed-arguments'
+
+	* obby/rudel-obby-server.el (header): fixed version
+
+2009-06-10  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-operation): fixed wording in
+	comment
+
+	* www/images/development.png (whole file): changed size 48x48 ->
+	64x64
+	* www/images/development.svg (whole file): changed size 48x48 ->
+	64x64
+	* www/images/download.png (whole file): changed size 48x48 ->
+	64x64
+	* www/images/download.svg (whole file): changed size 48x48 ->
+	64x64
+	* www/images/info.png (whole file): changed size 48x48 -> 64x64
+	* www/images/info.svg (whole file): changed size 48x48 -> 64x64
+
+	* index.html (section introduction): wording fixes; link to Gobby
+	(whole file): removed external link class for sourceforge links
+	(section download): added link to INSTALL file in svn code browser
+	(section footer): fixed copyright
+
+	* compatibility.html (section footer): fixed copyright
+
+2009-06-09  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (section REQUIREMENTS): removed ERT which is not
+	currently used
+	(section INSTALL): some wording and file name fixes
+	(section COMPILING): precise make command
+
+	* www/index.html (section development): fixed mailing list and
+	issue tracker links; removed email address
+
+	* www/compatibility.html (head): fixed charset
+	(section semantic): added missing <p> tag
+
+	* www/compatibility.html (new file): compatibility information
+	* www/index.html (new file): start page
+	* www/style.css (new file): stylesheet
+	* www/images/development.png (new file): development icon
+	* www/images/development.svg (new file): development icon
+	* www/images/download.png (new file): download icon
+	* www/images/download.svg (new file): download icon
+	* www/images/email-link.png (new file): icon for email links
+	* www/images/external-link.png (new file): icon for external links
+	* www/images/info.png (new file): info icon
+	* www/images/info.svg (new file): info icon
+	* www/images/screenshot.png (new file): screenshot for the start
+	page
+
+	* obby/rudel-obby-serverl.el
+	(rudel-obby-client::rudel-obby/obby_document_create): find unique
+	suffix for the new document; send suffix to clients
+
+	* obby/rudel-obby.el (header): fixed license text
+	* obby/rudel-obby-util.el (header): fixed license text
+	* obby/rudel-obby-server.el (header): fixed license text
+	* obby/rudel-obby-client.el (header): fixed license text
+	* jupiter/jupiter.el (header): fixed license text
+	* jupiter/jupiter-operation.el (header): fixed license text
+	* jupiter/jupiter-nop.el (header): fixed license text
+	* jupiter/jupiter-insert.el (header): fixed license text
+	* jupiter/jupiter-delete.el (header): fixed license text
+	* jupiter/jupiter-compound.el (header): fixed license text
+	* rudel.el (header): fixed license text
+	* rudel-util.el (header): fixed license text
+	* rudel-tls.el (header): fixed license text
+	* rudel-telepathy.e (header): fixed license text
+	* rudel-speedbar.el (header): fixed license text
+	* rudel-overlay.el (header): fixed license text
+	* rudel-operators.el (header): fixed license text
+	* rudel-operations.el (header): fixed license text
+	* rudel-mode.el (header): fixed license text
+	* rudel-interactive.el (header): fixed license text
+	* rudel-compat.el (header): fixed license text
+
+	* obby/rudel-obby-util.el (require cl): now required
+	(generic rudel-obby-char->byte): new generic; char positions ->
+	byte positions
+	(jupiter-insert::rudel-obby-char->byte): new method; char
+	positions -> byte positions
+	(jupiter-delete::rudel-obby-char->byte): new method; char
+	positions -> byte positions
+	(jupiter-compound::rudel-obby-char->byte): new method; char
+	positions -> byte positions
+	(jupiter-nop::rudel-obby-char->byte): new method; char positions
+	-> byte positions
+	(generic rudel-obby-byte->char): new generic; byte positions ->
+	char positions
+	(jupiter-insert::rudel-obby-byte->char): new method; byte
+	positions -> char positions
+	(jupiter-delete::rudel-obby-byte->char): new method; byte
+	positions -> char positions
+	(jupiter-compound::rudel-obby-byte->char): new method; byte
+	positions -> char positions
+	(jupiter-nop::rudel-obby-byte->char): new method; byte positions
+	-> char positions
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-operation): call
+	`rudel-obby-char->byte' before processing
+	(rudel-obby-connection::rudel-remote-operation): call
+	`rudel-obby-byte->char' before processing
+	* rudel.el (rudel-buffer-change-workaround-data): new variable;
+	holds change data for later use
+	(rudel-document::rudel-attach-to-buffer): add
+	`rudel-buffer-change-workaround' to 'before-change-functions'
+	(rudel-document::rudel-detach-from-buffer): remove
+	`rudel-buffer-change-workaround' from 'before-change-functions'
+	(rudel-buffer-change-workaround): new function; stores change data
+	for later use
+
+2009-06-07  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_join): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/net6_client_part): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_welcome): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_sync_init): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_sync_usertable_user): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_user_colour): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_sync_doclist_document):
+	use `with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document_create): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document_remove): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document): use
+	`with-parsed-arguments'; cleanup
+	(rudel-obby-connection::rudel-obby/obby_document/rename): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/subscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/unsubscribe): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/record): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins): use
+	`with-parsed-arguments'
+	(rudel-obby-connection::rudel-obby/obby_document/record/del): use
+	`with-parsed-arguments'
+
+2009-06-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_part): use `eql',
+	not `=' when calling `rudel-find-user' since the client id can be
+	nil
+
+	* obby/rudel-obby-util.el (require jupiter): silence byte compiler
+
+	* obby/rudel-obby-util.el (rudel-obby-dispatch): moved inside file
+	(with-parsed-arguments): new macro; executed forms with variables
+	bound to parsed arguments
+
+2009-06-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (require rudel-interactive): interactive functions use
+	`rudel-read-backend' and `rudel-read-document'
+
+	* rudel.el (rudel-buffer-document): mark as permanent local
+	variable to prevent deletion in the event of a major-mode change
+	(rudel-document::rudel-attach-to-buffer): add (buffer-locally)
+	`rudel-handle-major-mode-change' to 'change-major-mode-hook' such
+	that it can repair damage caused by major-mode changes
+	(rudel-document::rudel-detach-from-buffer): remove
+	`rudel-handle-major-mode-change' from 'change-major-mode-hook'
+	(rudel-mode-changed-buffers) new variable; temporarily stores
+	buffers that underwent major-mode changes
+	(rudel-handle-major-mode-change): new function; schedules buffers
+	for repair after major-mode changes
+	(rudel-after-major-mode-change): new function; repairs buffer
+	objects after major-mode changes
+
+2009-06-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-buffer-has-document-p): use `buffer-local-value'
+	(rudel-buffer-document): use `buffer-local-value'
+	(rudel-set-buffer-document): added documentation string
+
+2009-06-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-handle-buffer-change): There are three cases
+	now: insert, delete and arbitrary changes; arbitrary changes
+	generate a delete and insert operation
+
+	* rudel-mode.el (rudel-minor-keymap): added some comments
+	(global-rudel-minor-mode): extended documentation string; cleaned
+	up code; added comments
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_part): fixed typo
+	in variable name client-id-numeric
+
+2009-05-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-util.el (header): Fixed version (1.0 -> 0.1)
+
+	* obby/rudel-obby-client.el (header): Fixed version (1.0 -> 0.1)
+	(rudel-obby-connection::rudel-obby/obby_document/record/split):
+	introduced temporary variable
+
+2009-??-??  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-buffer-document): removed; replaced by
+	rudel-buffer-documents hash-table
+	(rudel-buffer-documents): new variable; a hash-table, which
+	associates documents to buffers
+	(rudel-buffer-has-document-p):
+	(rudel-buffer-document):
+	(rudel-set-buffer-document):
+
+2009-03-16  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_part): do not crash
+	if the client id cannot be found
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-make-document):
+	specify value 1 for slot suffix
+	(rudel-obby-document::suffix): new slot; contains the suffix
+	number of the document
+	(rudel-obby-document::rudel-unique-name): new method; return
+	unique name based on document name and suffix
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/obby_sync_doclist_document): do
+	not ignore the suffix when creating the document object
+	(rudel-obby-connection::rudel-obby/obby_document_create): do not
+	ignore the suffix when creating the document object
+	(rudel-obby-connection::rudel-obby/obby_document/rename): change
+	document name and suffix as requested
+	* rudel.el (rudel-document::rudel-unique-name): new method;
+	returns a unique name for the document
+	(rudel-document::rudel-suggested-buffer-name): new method; returns
+	a suggested name for the buffer attached to the document
+	(rudel-subscribe): use `rudel-suggested-buffer-name' instead of
+	the object name
+	* rudel-interactive.el (rudel-read-document): use the unique names
+	of the documents instead of the object names
+
+2009-02-27  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): add hook to
+	detach document from the buffer when the buffer is killed
+	(rudel-document::rudel-detach-from-buffer): remove unpublish
+	function kill buffer hook
+
+2009-02-23  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-document): minor cleanup
+	(rudel-document::rudel-attach-to-buffer): stylistic changes
+	(rudel-document::rudel-detach-from-buffer): fixed argument order in
+	call to `rudel-set-buffer-document'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-server::rudel-remove-client): Make sure there is a
+	user object before setting the status to offline
+
+	* obby/rudel-obby-client.el (rudel-obby/net6_encryption_failed):
+	only fail if encryption has been requested in the first
+	place. otherwise, just carry on
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): use
+	`rudel-set-buffer-document'
+	(rudel-document::rudel-detach-from-buffer): use
+	`rudel-set-buffer-document'
+	(rudel-buffer-has-document-p): new function; test whether a buffer
+	has an associated document object
+	(rudel-buffer-document): new function; returns associated document
+	object of a buffer
+	(rudel-set-buffer-document): new functions; sets associated
+	document object of a buffer
+	(rudel-handle-buffer-change): use `rudel-buffer-has-document-p'
+	(rudel-publish-buffer): use `rudel-buffer-has-document-p'
+	(rudel-unpublish-buffer): use `rudel-buffer-has-document-p' and
+	`rudel-buffer-document'
+	* rudel-mode.el (rudel-minor-keymap): use
+	`rudel-buffer-has-document-p'
+
+	* obby/rudel-obby-client.el (rudel-obby/obby_document/rename):
+	new method; dummy implementation
+
+	* obby/rudel-obby-client.el (rudel-obby/net6_client_join):
+	stylistic change
+
+2009-02-21  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-util.el (generic rudel-operation->message): new
+	generic function; serializes an operation
+	(jupiter-insert::rudel-operation->message): new method
+	(jupiter-delete::rudel-operation->message): new method
+	(jupiter-compound::rudel-operation->message): new method
+	(jupiter-nop::rudel-operation->message): new method
+	(rudel-message->operation): new function; deserializes an
+	operation from a received message
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-insert): do not construct
+	message string; use `rudel-operation->message'
+	(rudel-obby-connection::rudel-local-delete): do not construct
+	message string; use `rudel-operation->message'
+	(rudel-obby-connection::rudel-local-operation): new method;
+	handles operation objects that represent local operations
+	(rudel-obby-connection::rudel-remote-operation): new method;
+	handles operation objects that represent remote operations
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins):
+	construct operation name correctly; do not call jupiter context to
+	transform operation
+	(rudel-obby-connection::rudel-obby/obby_document/record/del):
+	construct operation name correctly; do not call jupiter context to
+	transform operation
+	(rudel-obby-connection::rudel-obby/obby_document/record/split):
+	new method; handles split operation messages
+	(rudel-obby-connection::rudel-obby/obby_document/record/noop): new
+	method; handles nop messages
+
+2009-02-12  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-connect-info):
+	ask whether to encrypt the connection
+	(rudel-obby-backend::rudel-connect): create connection object
+	capable of StartTLS encryption when encryption was requested
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_encryption): do not fail
+	when the server requests encryption
+	(rudel-obby-connection::rudel-obby/net6_encryption_begin): start
+	TLS encryption for the connection
+	(rudel-obby-connection::rudel-obby/net6_encryption_failed): new
+	method; stub
+	* rudel-tls.el (new file): StartTLS encryption for Rudel
+	* Project.ede ("rudel"): added rudel-tls.el
+	* Makefile (rudel_LISP): added rudel-tls.el
+
+2009-02-06  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-compat.el (header): fixed email address, keywords, legal
+	notice and file commentary
+
+2009-02-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-compat): require rudel-compat for
+	`read-color'
+	* rudel.el (rudel-compat): require rudel-compat for `read-color'
+	* rudel-interactive.el (rudel-compat): require rudel-compat for
+	`read-color'
+	* rudel-compat.el (new file): compatibility code
+	* Project.ede (rudel): added rudel-compat.el
+	* Makefile (rudel_LISP): regenerated: added rudel-compat.el
+
+2009-02-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (require rudel)
+	* obby/rudel-obby-util.el (require rudel)
+	* obby/rudel-obby-client.el (require rudel-obby): make compilation
+	succeed
+
+	* rudel.el (include eieio-speedbar): I need it for now; I should
+	get rid of it later
+
+	* INSTALL (REQUIREMENTS): added note that CVS version of cedet is
+	required
+	(INSTALLING): added subdirectories jupiter and obby in load path
+	listing; fixed name of autoload file
+
+2009-02-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-connect-info)
+	(rudel-obby-backend::rudel-host, rudel-obby-replace-in-string)
+	* obby/rudel-obby-util.el (rudel-obby-dispatch)
+	* obby/rudel-obby-server.el (rudel-obby-client::rudel-obby/obby_document)
+	(rudel-obby-server::rudel-broadcast, rudel-obby-server::rudel-make-user)
+	* obby/rudel-obby-client.el (rudel-obby-connection::rudel-obby/net6_client_join)
+	(rudel-obby-connection::rudel-obby/obby_document)
+	* jupiter/jupiter-operation.el (jupiter-operation)
+	* rudel.el (rudel-backend, rudel-session, rudel-server-session)
+	(rudel-connection, rudel-document)
+	(rudel-document::rudel-attach-to-buffer)
+	(rudel-document::rudel-detach-from-buffer)
+	(rudel-document::rudel-insert, rudel-document::rudel-delete)
+	(rudel-change-color)
+	* rudel-util.el (rudel-assemble-line-fragments, rudel-loop-lines)
+	* rudel-overlay.el (rudel-make-author-overlay)
+	* rudel-interactive.el (rudel-read-backend, rudel-read-user-color)
+	(rudel-read-user, rudel-read-document): replaced 't by t
+
+	* rudel-operators.el (rudel-overlay-operators::rudel-insert):
+	Fixed computation of insertion offset when appending to the end of
+	the buffer string
+
+	* rudel.el (rudel-document::rudel-chunks): fixed invalid access to
+	last chunk for empty buffer
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): fixed
+	incorrect slot reference
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): minor
+	rearrangement of expressions
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): minor
+	rearrangement of expressions
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins): added
+	documentation string
+	(rudel-obby-client::rudel-obby/obby_document/record/del): added
+	documentation string
+	(rudel-obby-server): cosmetic change
+
+	* jupiter/jupiter.el (jupiter-context::jupiter-remote-operation):
+	improved documentation string; cosmetic changes
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	improved some comments
+
+	* rudel.el (rudel-document::rudel-attach-to-buffer): renamed
+	some variables; added documentation string
+	(rudel-document::rudel-insert): improved documentation string
+	(rudel-document::rudel-chunks): do not create chunks when buffer
+	string is empty; improved comments
+	(rudel-choose-backend): compare number using `=' not `eq'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins): use
+	`rudel-remote-operation' instead of `rudel-remote-insert'
+	(rudel-obby-client::rudel-obby/obby_document/record/del): use
+	`rudel-remote-operation' instead of `rudel-remote-delete'
+	* obby/rudel-obby-client.el (include rudel-operations): for
+	rudel-insert-op and rudel-delete-op
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk): use
+	`rudel-remote-operation' with rudel-insert-op to insert chunks
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins): use
+	`rudel-remote-operation' instead of `rudel-remote-insert'
+	(rudel-obby-connection::rudel-obby/obby_document/record/del): use
+	`rudel-remote-operation' instead of `rudel-remote-delete'
+	* jupiter/jupiter-operation.el (include rudel-operations): for
+	rudel-operation
+	(jupiter-operation): derived from rudel-operation
+	(jupiter-operation::jupiter-apply): removed; replaced by generic
+	`rudel-apply'
+	* jupiter/jupiter-nop.el (jupiter-nop::jupiter-apply): removed;
+	replaced by `rudel-apply'
+	(jupiter-nop::rudel-apply): new method; implements generic
+	`rudel-apply'
+	* jupiter/jupiter-insert.el (include rudel-operations): for
+	jupiter-insert-op
+	(jupiter-insert): derived from jupiter-insert-op
+	(jupiter-insert::jupiter-apply): removed; inherited from
+	jupiter-insert-op
+	(jupiter-insert::slot-missing): removed; inherited from
+	jupiter-insert-op
+	* jupiter/jupiter-delete.el (include rudel-operations): for
+	jupiter-delete-op
+	(jupiter-delete): derived from jupiter-delete-op
+	(jupiter-delete::jupiter-apply): removed; inherited from
+	jupiter-delete-op
+	(jupiter-delete::slot-missing): removed; inherited from
+	jupiter-delete-op
+	* jupiter/jupiter-compound.el (jupiter-compound::jupiter-apply):
+	removed; replaced by `rudel-apply'
+	(jupiter-compound::rudel-apply): new method; implements generic
+	`rudel-apply'
+	* rudel.el (include rudel-operations): everything is represented
+	in terms of operations
+	(include rudel-operators): operations apply changes to objects
+	through operators
+	(rudel-document::rudel-insert): new method; performs insert
+	operation
+	(rudel-document::rudel-delete): new method; performs delete
+	operation
+	(rudel-document::rudel-local-insert): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-local-delete): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-remote-insert): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-remote-delete): removed; document does not
+	deal with aspects other than the actual insert and delete
+	(rudel-document::rudel-local-operation): new method; apply
+	operation using overlay and connection operators
+	(rudel-document::rudel-remote-operation): new method; apply
+	operation using document and overlay operators
+	(rudel-handle-buffer-change): realize buffer changes using
+	operations
+	* rudel-operators.el (new file): collections of operations on
+	Rudel data types
+	* rudel-operations.el (new file): operation classes
+
+2009-02-01  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	handle jupiter-nop
+
+	* jupiter/jupiter-delete.el (jupiter-delete::jupiter-transform):
+	in inner cond, use matching pattern but empty body for
+	no-operation cases; in outer cond, handle jupiter-nop
+
+	* jupiter/jupiter-compound.el (jupiter-compound): now derived from
+	jupiter-operation; should have been right from the start
+
+2009-01-31  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-default-username): Default name used when
+	prompting for user name; required by rudel-interactive
+
+	* rudel-interactive.el (rudel-read-backend): fixed typo
+
+2009-01-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* jupiter/jupiter-insert.el (jupiter-insert::jupiter-transform):
+	fixed two offset calculations
+	* jupiter/jupiter-delete.el (jupiter-delete::jupiter-transform):
+	fixed offset calculation
+
+	* rudel.el (rudel-backend::rudel-ask-connect-info): changed from
+	method to generic
+	(rudel-backend::rudel-connect): changed from method to generic
+	(rudel-backend::rudel-ask-host-info): changed from method to
+	generic
+	(rudel-backend::rudel-host): changed from method to generic
+	(rudel-backend::rudel-make-document): changed from method to
+	generic
+	(rudel-session::rudel-disconnect): changed from method to generic
+	(rudel-session::rudel-change-color-): changed from method to
+	generic
+	(rudel-session::rudel-publish): changed from method to generic
+	(rudel-session::rudel-subscribe-to): changed from method to
+	generic
+	(rudel-session::rudel-unsubscribe-from): changed from method to
+	generic
+	(rudel-session::rudel-local-insert): changed from method to
+	generic
+	(rudel-session::rudel-local-delete): changed from method to
+	generic
+	(rudel-session::rudel-remote-insert): changed from method to
+	generic
+	(rudel-session::rudel-remote-delete): changed from method to
+	generic
+
+2009-01-28  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-overlay.el (header): fixed version
+	(whole file): cosmetic changes
+	(rudel-author-overlay-p): added documentation string
+	(rudel-author-overlays): added documentation string
+
+	* rudel-mode.el (rudel-minor-keymap): cosmetic changes
+
+	* rudel-mode.el (rudel-minor-keymap): Separated session
+	participation and hosting items
+
+	* obby/rudel-obby.el (rudel-obby-long-message-threshold): Added
+	documentation string
+	(rudel-obby-long-message-chunk-size): Added documentation string
+	(rudel-obby-backend::rudel-connect): Do not set process object;
+	this is done in the `initialize-instance' method of the base class
+	(rudel-obby-format-color): retrieve color components with
+	`color-values'
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-remove-context): improved
+	documentation string
+	(rudel-obby-connection::rudel-publish): added a comment
+	(rudel-obby-connection::rudel-subscribe-to): added some comments;
+	cleaned up code
+	(rudel-obby-connection::rudel-unsubscribe-from): added a comment
+	(rudel-obby-connection::rudel-obby/net6_ping): added documentation
+	string
+	(rudel-obby-connection::rudel-obby/net6_encryption): added
+	documentation string
+	(rudel-obby-connection::rudel-obby/net6_login_failed): added
+	documentation string
+	(rudel-obby-connection::rudel-obby/net6_client_part): use `='
+	instead of `eq' to compare client ids; fixed documentation string;
+	improved comments
+	(rudel-obby-connection::rudel-obby/obby_user_colour): use `='
+	instead of `eq' to compare user ids
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk): use
+	`=' instead of `eq' to compare user ids; use accessor
+	`user-id-numeric'
+
+	* obby/rudel-obby-util.el (rudel-obby-dispatch): new functions;
+	dispatches to class methods based on message name; handles errors
+	properly
+	* obby/rudel-obby-server.el (rudel-obby-client::rudel-message):
+	use `rudel-obby-dispatch' to dispatch message
+	(rudel-obby-client::rudel-obby/obby_document): use
+	`rudel-obby-dispatch' to dispatch message
+	(rudel-obby-client::rudel-obby/obby_document/record): use
+	`rudel-obby-dispatch' to dispatch message
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-message): use `rudel-obby-dispatch'
+	to dispatch message; moved to a different location
+	(rudel-obby-connection::rudel-obby/obby_document): use
+	`rudel-obby-dispatch' to dispatch message
+	(rudel-obby-connection::rudel-obby/obby_document/record): use
+	`rudel-obby-dispatch' to dispatch message
+
+	* obby/rudel-obby-util.el (generic rudel-message): made the method
+	a generic function and updated the documentation string
+
+2009-01-26  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-document::revision): removed; The
+	slot is no longer needed
+	* obby/rudel-obby-server.el (require jupiter): uses jupiter
+	algorithm
+	(rudel-obby-client::rudel-obby/obby_document_create): add a
+	jupiter context for the document
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): add a
+	jupiter context for the document
+	(rudel-obby-client::rudel-obby/obby_document/unsubscribe): remove
+	the jupiter context associated to the document
+	(rudel-obby-client::rudel-obby/obby_document/record/ins):
+	transformed the operation before applying it to the buffer; use
+	the respective jupiter contexts of the receivers when sending the
+	operation
+	(rudel-obby-client::rudel-obby/obby_document/record/del):
+	transformed the operation before applying it to the buffer; use
+	the respective jupiter contexts of the receivers when sending the
+	operation
+	(rudel-obby-server::contexts): new slot; stores jupiter contexts
+	for pairs of clients and documents
+	(rudel-obby-server::initialize-instance): new method; store an
+	empty hash-table in the `contexts' slot
+	(rudel-obby-server::rudel-find-context): find the jupiter context
+	for a pair of a client and a document
+	(rudel-obby-server::rudel-add-context): add a jupiter context for
+	a pair of a client and a document
+	(rudel-obby-server::rudel-remove-context): remove the jupiter
+	context for a pair of a client and a document
+	(rudel-obby-context-key): return a list of client id and document
+	id
+	* obby/rudel-obby-client.el (require jupiter): uses jupiter
+	algorithm
+	(rudel-obby-connection::contexts): new slot; stores jupiter
+	contexts for documents
+	(rudel-obby-connection::initialize-instance): new method; store an
+	empty hash-table in the `contexts' slot
+	(rudel-obby-connection::rudel-find-context): new method; return
+	the jupiter context for a document
+	(rudel-obby-connection::rudel-add-context): new method; add a
+	jupiter context for a document
+	(rudel-obby-connection::rudel-remove-context): new method; remove
+	the jupiter context for a document
+	(rudel-obby-connection::rudel-publish): add a jupiter context for
+	the new document
+	(rudel-obby-connection::rudel-subscribe-to): add a jupiter context
+	for the new document
+	(rudel-obby-connection::rudel-unsubscribe-from): remove the
+	jupiter context associated to the document
+	(rudel-obby-connection::rudel-local-insert): use revision
+	information from the jupiter context instead of the document;
+	supply the operation to the jupiter context
+	(rudel-obby-connection::rudel-local-delete): use revision
+	information from the jupiter context instead of the document;
+	supply the operation to the jupiter context
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins):
+	transform the operation using the jupiter context instead of using
+	it unmodified
+	(rudel-obby-connection::rudel-obby/obby_document/record/del):
+	transform the operation using the jupiter context instead of using
+	it unmodified
+
+2009-01-22  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby-client.el (rudel-obby-connection): removed
+	redundant slot `socket' (inherited from base class)
+
+2009-01-21  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (rudel-read-user): added comments
+	(rudel-allocate-buffer-clear-existing): added documentation string
+	(rudel-allocate-buffer-make-unique): added documentation string
+
+2009-01-19  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el, rudel-util.el, rudel-telepathy.el, rudel-speedbar.el,
+	rudel-overlay.el, rudel-mode.el, jupiter/jupiter.el,
+	jupiter/jupiter-operation.el, jupiter/jupiter-nop.el,
+	jupiter/jupiter-insert.el, jupiter/jupiter-delete.el,
+	jupiter/jupiter-compound.el, obby/rudel-obby.el,
+	obby/rudel-obby-util.el, obby/rudel-obby-server.el,
+	obby/rudel-obby-client.el (header): changed email address
+	<scymtym@users.sourceforge.net> ->
+	<scymtym@users.sourceforge.net>
+
+	* rudel-interactive.el (header): added keywords to file header
+	comment
+
+	* jupiter/jupiter.el (new file): core Jupiter algorithm
+	* jupiter/jupiter-operation.el (new file): base class for Jupiter
+	operations
+	* jupiter/jupiter-insert.el (new file): insert operation for
+	Jupiter algorithm
+	* jupiter/jupiter-delete.el (new file): delete operation for
+	Jupiter algorithm
+	* jupiter/jupiter-nop.el (new file): no-operation for Jupiter
+	algorithm
+	* jupiter/jupiter-compound.el (new file): compound operation for
+	Jupiter algorithm
+
+2009-01-11  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-user::client-id): added rationale
+	for type (or null integer)
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-obby/net6_client_join): added
+	documentation string; cosmetic changes
+	(rudel-obby-connection::rudel-obby/net6_client_part): use accessor
+	`rudel-client-id' when searching for the user object; set
+	client-id to nil in the user object; added documentation string
+	(rudel-obby-connection::rudel-obby/obby_sync_usertable_user):
+	store parsed user-id and color in temporaries
+	(rudel-obby-connection::rudel-obby/obby_user_colour):store parsed
+	color in a temporary; use accessor `rudel-id' when finding the
+	user object
+
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-change-color-): new function;
+	implements changing the color
+
+	* obby/rudel-obby-util.el
+	(rudel-obby-socket-owner::rudel-receive): improved documentation
+	string
+
+2009-01-05  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* INSTALL (REQUIREMENTS): proper list of requirements and sources
+	from which they can be obtained
+	(INSTALLING): initial version of installation instructions
+	(COMPLETING): some notes about compiling
+	* README (INTRODUCTION): short introduction
+	(GETTING STARTED): some notes about enabling Rudel, joining and
+	hosting sessions
+
+2009-01-04  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-long-message-threshold): new
+	variable; threshold for message size, above which messages are
+	sent in multiple chunks
+	(rudel-obby-long-message-chunk-size): Chunk size used, when
+	chunking long messages.
+	(rudel-obby-user::client-id): allow value nil; added accessor;
+	added documentation string
+	(rudel-obby-send): new function; handles low-level aspects of
+	sending obby protocol messages
+	* obby/rudel-obby-util.el: new file; contains helper
+	functionality, mainly the class `rudel-obby-socket-owner', which
+	handles sending and receiving message
+	* obby/rudel-obby-server.el (includes): replaced rudel-obby with
+	rudel-obby-util, since it contains `rudel-obby-socket-owner'
+	(class rudel-obby-client): added base class
+	`rudel-obby-socket-owner'
+	(rudel-obby-client::rudel-receive): deleted, the functionality is
+	provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-client::rudel-send): deleted, the functionality is
+	provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-client::rudel-message): new method; called by base
+	class when a message is received; dispatches to appropriate
+	handler method
+	(rudel-obby-client::rudel-obby/obby_user_colour): minor change in
+	documentation string
+	* obby/rudel-obby-client.el (includes): replaced rudel-obby with
+	rudel-obby-util, since it contains `rudel-obby-socket-owner'
+	(class rudel-obby-connection): added base class
+	`rudel-obby-socket-owner'
+	(rudel-obby-connection::rudel-disconnect): just call next method;
+	it does what this method formerly did
+	(rudel-obby-connection::rudel-close): new method; end the session,
+	when the connection is closed
+	(rudel-obby-connection::rudel-receive): deleted, the functionality
+	is provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-connection::rudel-send): deleted, the functionality is
+	provided by the base class `rudel-obby-socket-owner'
+	(rudel-obby-connection::rudel-message): new method; called by
+	base class when a message is received; dispatches to appropriate
+	handler method
+
+	* rudel.el (rudel-document::rudel-detach-from-buffer): do nothing,
+	if the document is not attached to any buffer
+
+	* obby/rudel-obby.el (rudel-obby-user): added missing accessor
+	`rudel-connected'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/net6_client_login): transmit number
+	of synchronization items; transmit list of disconnected users
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/record/ins):
+	broadcast only to clients, which are subscribed to the document;
+	send user id of author instead of client id
+	(rudel-obby-client::rudel-obby/obby_document/record/del):
+	broadcast only to clients, which are subscribed to the document;
+	send user id of author instead of client id
+	(rudel-obby-client::rudel-subscribed-clients-not-self): new
+	method; return a list of clients subscribed to a document
+	excluding the client itself.
+
+	* obby/rudel-obby-server.el (rudel-obby-server::next-client-id):
+	first id should be 1, not 0; fixed initform accordingly
+	(rudel-obby-server::next-user-id):
+	first id should be 1, not 0; fixed initform accordingly
+
+	* rudel.el (rudel-document::rudel-chunks): fixed void variable
+	`chunks-' -> `augmented-chunks'
+
+	* obby/rudel-obby-server.el
+	(rudel-obby-client::rudel-obby/obby_document/subscribe): send
+	individual buffer chunks with their respective authors instead of
+	one large string without author information
+	* rudel.el (rudel-document::rudel-chunks): new method; return a
+	list of buffer position ranges and the respective authors, that
+	wrote the text
+
+2009-01-03  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-host): cleanup
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-local-insert): accept arguments
+	`position' and `data' instead of `from', `to' and `what'; since
+	position is zero-based, transmit it literally
+	(rudel-obby-connection::rudel-local-delete): instead of `from' and
+	`to' accept argument `position'; since position is
+	zero-based. transmit it literally
+	(rudel-obby-connection::rudel-obby/obby_document/record):
+	identified remaining arguments; dispatch actions to appropriate
+	methods; identify methods by interning their symbols
+	(rudel-obby-connection::rudel-obby/obby_document/record/ins): new
+	method; handle remote insert actions
+	(rudel-obby-connection::rudel-obby/obby_document/record/del): new
+	method; handle remote delete actions
+	* rudel.el (includes): include rudel-overlay
+	(rudel-document::rudel-detach-from-buffer): improved readability
+	(rudel-document::rudel-local-insert): instead of redundant
+	arguments `from', `to' and `what' accept only `position' and
+	`data'; update overlays
+	(rudel-document::rudel-local-delete): instead of redundant
+	arguments `from', `to' and `length' accept only `position' and
+	`length'; update overlays
+	(rudel-document::rudel-remote-insert): renamed arguments `from' ->
+	`position', `what' -> `data'; update overlays
+	(rudel-document::rudel-remote-delete): replaced arguments `from'
+	and `to' by `position'; update overlays
+	(rudel-handle-buffer-change): call rudel-local-{insert, delete}
+	with changed arguments
+
+2009-01-01  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-session::rudel-unsubscribed-documents): new
+	method; returns documents, to which the user associated with the
+	session is not yet subscribed
+	(rudel-subscribe): when called interactively, use
+	`rudel-unsubscribed-documents' to offer only unsubscribed
+	documents in completing read
+
+	* rudel-interactive.el (rudel-read-user-name): new function; read
+	a user name; could be used to enforce certain constraints on the
+	name
+	(rudel-read-user-color): new function; read a user color; could be
+	used to enforce certain constraints on the color
+
+	* obby/rudel-obby.el (rudel-obby-backend::rudel-ask-host-info):
+	new method; ask user for port number
+	(rudel-obby-backend::rudel-host): new method; require obby server
+	component, make the network process and construct the server
+	* obby/rudel-obby-server.el (new file): initial revision of obby
+	server for rudel
+	* obby/rudel-obby-client.el (header section): added keyword and
+	x-rcs
+	(rudel-obby-connection::rudel-publish): new method; send document
+	to server
+	(rudel-obby-connection::rudel-unsubscribe-from): send unsubscribe
+	notification to server
+	(rudel-obby-connection::rudel-local-insert): cleanup
+	(rudel-obby-connection::rudel-local-delete): new method; send
+	delete record to server and increase local revision
+	(rudel-obby-connection::rudel-obby/obby_document/sync_chunk):
+	improved user locating code; do not complain, when the user is not
+	found
+	(rudel-obby-connection::rudel-obby/obby_document/record): removed
+	useless debug message
+	* rudel.el (class rudel-session): update documentation string
+	(class rudel-server-session): new class; base class for server
+	sessions
+	(rudel-choose-backend): fixed void-variable when called
+	interactively
+	(rudel-host-session): provided initial implementation, which uses
+	the selected backend to create a server
+	(rudel-subscribe): call `set-window-buffer' instead of
+	`show-buffer'
+
+	* obby/rudel-obby.el (header section): fixed history
+	(rudel-obby-version): new constant; holds version of the obby
+	backend
+	(rudel-obby-protocol-version): new constant; holds the obby
+	protocol version understood by the backend
+	(rudel-obby-document::rudel-both-ids): new method; useful when
+	locating documents by means of owner and document id
+
+	* rudel-mode.el (header section): added keywords
+
+	* rudel-interactive.el (header section): added file comment
+
+2008-12-30  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (class rudel-session): converted to base class for
+	other session classes; removed slots `connection' and `self' which
+	are specific for client sessions
+	(rudel-session::rudel-end): empty now; derived classes do the work
+	(rudel-session::rudel-add-user): use `object-add-to-list'
+	(rudel-session::rudel-remove-user): use `object-remove-from-list'
+	(rudel-session::rudel-add-document): use `object-add-to-list'
+	(rudel-session::rudel-remove-document): use
+	`object-remove-from-list'
+	(class rudel-client-session): derived from `rudel-session';
+	additional slots `connection' and `self'
+	(rudel-client-session::rudel-end): detach buffers from documents
+	and call `rudel-disconnect' on connection
+	(class rudel-connection): documentation string
+	(rudel-connection::rudel-disconnect): remove hook
+	`after-change-functions' only locally
+	(rudel-join-session): construct a proper session name; store
+	backend object in the session; some comments
+
+	* obby/rudel-obby.el (rudel-obby-document): cleanup; improved
+	documentation strings
+
+	* rudel-overlay.el (new file): functions for managing overlays,
+	which indicate the authors of contributions in collaborative
+	buffers
+
+	* rudel.el (rudel-allocate-buffer-function): customization option
+	for buffer allocation function
+	(rudel-subscribe): call buffer allocation function instead of just
+	using the provided name
+	* rudel-interactive.el (rudel-allocate-buffer-clear-existing): new
+	function; in case of a conflict, allocate buffer for subscription
+	by clearing the existing buffer
+	(rudel-allocate-buffer-make-unique): new function; in case of a
+	conflict, allocate buffer for subscription by producing a unique
+	name
+
+	* rudel.el (customization): added customization group definition
+	for `rudel'
+
+	* obby/rudel-obby.el (includes): require `rudel-util' instead of
+	`rudel'
+	(rudel-connect): attach connection to socket object
+	(rudel-obby-document): removed slot `subscribed' as it is now
+	contained in the base class `rudel-document'
+	(rudel-obby-escape-string): call `rudel-obby-replace-in-string'
+	instead of `obby-replace-in-string'
+	(rudel-obby-unescape-string): call `rudel-obby-replace-in-string'
+	instead of `obby-replace-in-string'
+	* obby/rudel-obby-client.el
+	(rudel-obby-connection::rudel-state-change): required by
+	`rudel-sentinel-dispatch'
+	(rudel-obby-connection::rudel-subscribe-to): do not touch slot
+	`subscribed'
+	(rudel-obby-connection::rudel-obby/obby_sync_doclist_document):
+	retrieve subscribed users and add to `subscribed' slot
+	(rudel-obby-connection::rudel-obby/obby_document_create): add
+	document owner to `subscribed' slot
+	(rudel-obby-connection::rudel-obby/obby_document/subscribe): add
+	user to `subscribed' slot
+	(rudel-obby-connection::rudel-obby/obby_document/unsubscribe):
+	remove user from `subscribed' slot
+	* rudel.el (rudel-document): added slot `subscribed' which
+	contains a list of subscribed users
+	(rudel-subscribe): do not use `rudel-unsubscribed-documents';
+	instead list all documents for now
+	(rudel-publish-buffer): add self to `subscribed' slot
+
+	* rudel-util.el (rudel-state-change): cleanup; added comments
+
+	* rudel-mode.el (rudel-minor-keymap): Fixed invalid menu
+	definition
+
+	* obby/rudel-obby.el (whole file): moved class
+	`rudel-obby-connection' and related methods into file
+	`rudel-obby-client.el'
+	(rudel-obby-backend): added capability `track-subscriptions'
+	(rudel-obby-backend::rudel-connect): require `rudel-obby-client'
+	before constructing the connection object
+	* obby/rudel-obby-client.el (new file): moved class
+	`rudel-obby-connection' and related methods into this file
+
+2008-12-29  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* rudel.el (rudel-connection::rudel-change-color-): new method
+	handles color changes
+	(rudel-change-color): added basic implementation, which checks the
+	backend, asks the user for a new color and calls the connection
+	object
+
+	* rudel-util.el (rudel-socket-owner::rudel-state-change): called
+	when the state of the connection changes
+	(rudel-socket-owner::rudel-close): called when the connection is
+	closed
+	(rudel-sentinel-dispatch): the argument is a message, not the
+	actual state, the state is retrieved with `process-state'
+
+	* rudel-speedbar.el (whole file): cleanup; improved comments
+
+	* rudel-mode.el (whole file): improved comments
+	(rudel-read-{backend, document}): moved to rudel-interactive.el
+	(rudel-minor-keymap): added key binding for `rudel-change-color';
+	added `options' menu item
+
+	* rudel-interactive.el (whole file): user interaction functions
+	used by all Rudel components
+
+	* rudel-util.el (whole file): utility functions used by all Rudel
+	components
+
+	* rudel.el (whole file): improved comments
+	(rudel-backend::make-document): new function create an appropriate
+	document object for the backend
+	(rudel-session::rudel-end): added documentation string
+	(rudel-session::rudel-add-user): added documentation string
+	(rudel-session::rudel-remove-user): added documentation string
+	(rudel-session::rudel-remove-document): new method; remove
+	document from session
+	(rudel-connection::rudel-publish): new function; called when a
+	buffer is published
+	(rudel-connection::rudel-unsubscribe-from): new function; called
+	when a subscription is canceled
+	(class rudel-user): added documentation strings
+	(class rudel-document): added documentation strings
+	(rudel-document::rudel-attach-to-buffer): add to
+	`after-change-functions' hook only for the buffer in question;
+	added some comments
+	(rudel-document::rudel-detach-from-buffer): cleanup
+	(rudel-document::rudel-remote-insert): added comments
+	(rudel-document::rudel-remote-delete): added comments
+	(rudel-handle-buffer-change): added comments
+	(rudel-choose-backend): added comments
+	(rudel-end-session): additional error check
+	(rudel-subscribe): call `rudel-unsubscribed-documents' when
+	completing document name; added comments
+	(rudel-unpublish-buffer): call `rudel-detach-from-buffer' and
+	`rudel-unsubscribe-from'; added comments
+
+	* obby/rudel-obby.el (whole file): improved comments
+	(rudel-obby-backend::rudel-ask-connect-info): removed :override
+	tag; added comments
+	(rudel-obby-backend::rudel-connect): removed :override tag; use
+	`make-network-process' instead of `open-network-stream' and attach
+	filter and sentinel right away; removed some debug code
+	(rudel-obby-backend::rudel-disconnect): removed :override tag
+	(rudel-obby-backend::rudel-subscribe-to): removed :override tag
+	(rudel-obby-backend::rudel-local-insert): removed :override tag
+	(rudel-obby-backend::rudel-local-delete): removed :override tag
+	(rudel-obby-backend::rudel-make-document): new method; creates a
+	new rudel-obby-document object
+	(rudel-obby-backend::rudel-available-document-id): obtains an
+	unused document id, which can be assigned to a new document
+	(class rudel-obby-connection): removed useless `host' and `port'
+	slots
+	(rudel-obby-connection::rudel-receive): removed some debug code
+	(rudel-obby-connection::rudel-send): removed some debug code
+	(rudel-obby-connection::rudel-obby/net6_client_join): fixed syntax
+	error
+	(class rudel-obby-user): added accessors for slots `client-id' and
+	`user-id'
+	(rudel-obby-user::eieio-speedbar-description): removed :override
+	tag
+	(rudel-obby-user::eieio-speedbar-object-buttonname): removed
+	:override tag
+	(class rudel-obby-document): added accessors and documentation for
+	slot `id'
+	(rudel-obby-document::eieio-speedbar-object-buttonname): removed
+	:override tag
+	(rudel-obby-replace-in-string): new function; replace a set of
+	patterns in a string
+	(rudel-obby-escape-string): new function; replace obby control
+	characters with their escape sequences
+	(rudel-obby-unescape-string): new function; inverse of
+	`rudel-obby-escape-string'
+	(rudel-obby-parse-color): added documentation
+	(rudel-obby-format-color): added documentation
+	(rudel-obby-assemble-message): properly escape message components
+	(rudel-obby-parse-message): properly unescape message components
+
+	* README (whole file): some initial notes
+	* INSTALL (whole file): some initial notes
+
+2008-12-02  Jan Moringen  <scymtym@users.sourceforge.net>
+
+	* obby (directory): new directory for files belonging to the obby
+	backend
+	* rudel-obby.el (whole file): moved to `obby' directory
+	* obby/rudel-obby.el (whole file): moved here from parent
+	directory
+
+	* Changelog (whole file): renamed to `ChangeLog?'
+	* ChangeLog? (whole file): fixed name
+
+	* INSTALL (whole file): added
+
+	* rudel.el (whole file): fixed some comments, removed some test
+	code
+	(rudel-version): new variable; global Rudel version
+	(rudel-sessions): removed; we only allow one session for now
+	(rudel-session): cleaned up
+	(rudel-session::rudel-end): cleaned up; added some comments
+	(rudel-session::rudel-add-user): cosmetic changes
+	(rudel-session::rudel-remove-user): cosmetic changes
+	(rudel-session::rudel-find-user): cosmetic changes
+	(rudel-session::rudel-add-document): cosmetic changes
+	(rudel-session::rudel-find-document): cosmetic changes
+	(rudel-backend::rudel-connect): improved documentation string
+	(rudel-backend::rudel-ask-host-info): renamed from
+	`rudel-ask-listen-info'
+	(rudel-backend::rudel-host): renamed from `rudel-listen'
+	(rudel-document::rudel-attach-to-buffer): cosmetic changes
+	(rudel-document::rudel-remote-insert): cleaned up
+	(rudel-document::rudel-remote-delete): cleaned up
+	(rudel-load-backends): cosmetic changes
+	(rudel-choose-backend): fixed message display
+	(rudel-host-session): improved documentation string
+	(rudel-change-color): raise an error since this is not yet
+	implemented
+	(rudel-subscribe): added comments
+	(rudel-unpublish-buffer): raise an error if the buffer has not
+	been published
+
+	* rudel.el (whole file): cleanup up some obsolete code
diff --git a/emacs.d/lisp/rudel/INSTALL b/emacs.d/lisp/rudel/INSTALL
new file mode 100644
index 0000000..2555d09
--- /dev/null
+++ b/emacs.d/lisp/rudel/INSTALL
@@ -0,0 +1,58 @@
+* REQUIREMENTS
+
+  Rudel is developed and tested only with GNU Emacs and therefore
+  unlikely to run on other Emacs variants like XEmacs.
+
+  To use Rudel, the following software is required:
+
+** GNU Emacs 22 or above
+   Rudel should work with recent versions of GNU Emacs starting from
+   version 22. Older versions of GNU Emacs or XEmacs may or not work
+   but are not actively tested.
+
+** Collection of Emacs Development Environment Tools (CEDET)
+   Cedet contains the object system Eieio, which is used in Rudel's
+   object-oriented implementation. Cedet can be obtained from
+   http://cedet.sourceforge.net/
+
+   IMPORTANT: It is necessary to use at least the 1.0pre6 version of
+   CEDET since it fixes a serious problem in the object system Eieio.
+
+   As of October 2009, Eieio is included in GNU Emacs. If you are
+   using a version built since then, you do not have to install it
+   yourself.
+
+** GnuTLS (optional)
+   Connections to Gobby servers require the gnutls-cli program.
+
+** Avahi (optional)
+   The Avahi daemon (http://avahi.org) is required for automatic
+   session discovery and advertising.
+
+   A version of GNU Emacs with Zeroconf support (GNU Emacs 23 or
+   above) is required to talk to the Avahi daemon.
+
+* INSTALLING
+
+  To install Rudel, download a released version or the current
+  development version from http://sourceforge.net/projects/rudel/ and
+  place the code in any directory you like.
+
+  Once Eieio (see CEDET in the REQUIREMENTS section above) is
+  installed, add the following to your personal Emacs configuration:
+
+  (load-file "/PATH/TO/RUDEL/rudel-loaddefs.el")
+
+  This will set Rudel up to be loaded on demand when one of the
+  commands `rudel-join-session', `rudel-host-session' or
+  `global-rudel-minor-mode' is invoked.
+
+* COMPILING
+
+  In order to achieve better performance, Emacs can byte-compile the
+  Rudel code. This can be done by opening rudel-compile.el in Emacs
+  and invoking M-x eval-buffer.
+
+Local variables:
+mode: org
+end:
diff --git a/emacs.d/lisp/rudel/Project.ede b/emacs.d/lisp/rudel/Project.ede
new file mode 100644
index 0000000..ff3a264
--- /dev/null
+++ b/emacs.d/lisp/rudel/Project.ede
@@ -0,0 +1,24 @@
+;; Object rudel
+;; EDE project file.
+(ede-proj-project "rudel"
+  :name "rudel"
+  :version "0.3"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp-autoloads "autoloads"
+    :name "autoloads"
+    :path ""
+    :autoload-file "rudel-loaddefs.el"
+    :autoload-dirs '("." "jupiter" "obby" "wave" "zeroconf")
+    )
+   (ede-proj-target-elisp "compile"
+    :name "rudel"
+    :path ""
+    :source '("rudel.el" "rudel-util.el" "rudel-mode.el" "rudel-interactive.el" "rudel-overlay.el" "rudel-speedbar.el" "rudel-operators.el" "rudel-operations.el" "rudel-compat.el" "rudel-tls.el" "rudel-errors.el" "rudel-state-machine.el" "rudel-backend.el" "rudel-protocol.el" "rudel-session-initiation.el" "rudel-icons.el" "rudel-hooks.el" "rudel-transport.el" "rudel-chat.el")
+    )
+   )
+  :mailinglist "rudel-devel@lists.sourceforge.net"
+  :web-site-url "http://rudel.sourceforge.net/"
+  :web-site-directory "/scymtym,rudel@web.sourceforge.net:/home/groups/r/ru/rudel/htdocs"
+  :configuration-variables 'nil
+  )
diff --git a/emacs.d/lisp/rudel/README b/emacs.d/lisp/rudel/README
new file mode 100644
index 0000000..aeacba7
--- /dev/null
+++ b/emacs.d/lisp/rudel/README
@@ -0,0 +1,88 @@
+* INTRODUCTION
+
+  Rudel is collaborative editing environment for GNU Emacs. Its
+  purpose is to share buffers with other users in order to edit the
+  contents of those buffers collaboratively. Rudel supports multiple
+  backends to enable communication with other collaborative editors
+  using different protocols, though currently Obby (for use with the
+  Gobby editor) is the only fully-functional one.
+
+  Since Rudel is not an application, but an extension to Emacs, it is
+  not started and used like most applications (not even Emacs
+  applications like Gnus). Rudel mostly works in the background to
+  change the behavior of the set of Emacs buffers for which it has
+  been activated.
+
+  The user interface consists of a set of key bindings, a menu entry
+  and some visual status indicators, which are added to the text and
+  mode line of buffers for which Rudel has been activated.
+
+* GETTING STARTED
+
+  Assuming Rudel has already been installed and auto loading has been
+  set up, a global Rudel mode can be enabled as follows:
+
+  : M-x global-rudel-minor-mode
+
+  This will enabled Rudel's key bindings and menu entry.
+
+** JOINING A SESSION
+
+   : M-x rudel-join-session [ C-c c j ]
+
+   Depending on the installed Rudel backends, system environment and
+   configuration, a number of questions will be asked, followed by an
+   attempt to join session described by your answers.
+
+   A typical example of the questions asked when joining a session may
+   look like this:
+
+   Server: localhost RET
+   Port (default 6522): RET
+   Username: jan RET
+   Color: light sky blue RET
+   Use Encryption (y or n): n RET
+   Global Password: RET
+   User Password: RET
+
+   IMPORTANT: For sessions using the obby backend (like in the example
+   above), the following restriction has to be taken into account:
+   + When the server is Rudel inside an Emacs process:
+     Encryption cannot be used currently in this case. Consequently
+     the answer to the `Use Encryption (y or n):' prompt above has to
+     be `n RET'.
+   + When the server is a Gobby process:
+     Gobby only supports encrypted connections. So the answer has to
+     be `y RET' is this case.
+
+   It is possible to configure frequently used sessions using the
+   customization options `rudel-configured-sessions'. When one or more
+   sessions are configured, `rudel-join-session' will provide choices
+   like "my-configured-session", ... and "ask-protocol". Selecting
+   "ask-protocol" invokes the behavior described above. Selecting one
+   of the configured sessions connects to that session without asking
+   for all the data.
+
+** HOSTING A SESSION
+
+   : M-x rudel-host-session [ C-c c h ]
+
+   Note that the session starts out without any participating users
+   (This is sometimes referred to as being a dedicated server). If you
+   want to participate in the session you host, you have to join it as
+   described above.
+
+* KNOWN ISSUES
+
+   + Publishing eshell buffers will cause your session to be
+     disconnected since eshell disables the hooks that Rudel uses to
+     catch changes to the buffer. As a workaround, you can use M-x
+     ansi-term or another terminal emulator.
+
+* LICENSE
+
+  Rudel is licensed under the same terms as GNU Emacs.
+
+Local variables:
+mode: org
+end:
diff --git a/emacs.d/lisp/rudel/TODO b/emacs.d/lisp/rudel/TODO
new file mode 100644
index 0000000..e5e4bf4
--- /dev/null
+++ b/emacs.d/lisp/rudel/TODO
@@ -0,0 +1,436 @@
+* Future
+** NEW Handle messages spanning multiple frames
+   + Component :: beep-transport
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** NEW Operation log can grow beyond all bounds (#37)
+   + Component :: obby-general
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   When no remote operations are received, the log of local operation
+   is not reset and therefore grows beyond all bounds.
+** NEW Terminating sessions does not work (#47)
+   + Component :: rudel-general
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   There is a menu entry for terminating sessions which are hosted by
+   Rudel, but it does not do anything.
+** NEW Rename document message is not understood (#7)
+   + Component :: obby-client
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** NEW Rename document message is not understood (#8)
+   + Component :: obby-backend
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** TODO Notification mechanism
+   + Component :: user-interface
+   + Type :: task
+   + Reporter :: jan
+   + Type :: task
+   + Assigned ::
+** TODO SubEthaEdit client functionality
+   + Component :: subethaedit-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Show cursor positions of other users (#5)
+   + Component :: rudel-user-interface
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+** TODO Some kind of server log buffer (#11)
+   + Component :: rudel-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+   It would be nice to log server events. This could be done in a
+   separate buffer or using a dedicated mechanism like
+   rudel-notification.
+** TODO Backends should be able to offer additional menu items (#14)
+   + Component :: rudel-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+** TODO Obby session can be protected by passwords (#15)
+   + Component :: obby-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+** TODO Obby users can protect their accounts with passwords (#16)
+   + Component :: obby-general
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+   The Gobby implementation is in obby/inc/server_buffer.hpp:851
+** TODO Zeroconf session notification (#52)
+   + Component :: zeroconf
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+   Watch interesting Zeroconf services and use `rudel-notify` if new
+   services are discovered
+** TODO State machine diagram (#59)
+   + Component :: obby-client
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO State machine diagram (#60)
+   + Component :: obby-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Send key presses as chat messages (#61)
+   + Component :: rudel-general
+   + Type :: task
+   + Reporter :: Jan
+   + Assigned ::
+   Sending key presses as chat messages could be really useful for
+   somebody something using rudel.
+** STARTED BEEP transport
+   + Component :: beep-transport
+   + Type :: task
+   + Reporter :: jan
+   + Assigned :: jan
+** STARTED Reference manual (#46)
+   + Component :: documentation
+   + Type :: task
+   + Reporter :: jan
+   + Assigned :: jan
+   In addition to the `README`, a proper reference manual would be
+   nice. At some point, complete info documentation may be
+   desirable. Docbook seems to be the best approach since we get (at
+   least):
+   + Pdf
+   + Html
+   + Info
+
+
+* Milestone rudel-0.4
+** TODO Telepathy transport
+   + Component :: telepathy-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+
+* Milestone rudel-0.3
+** TODO Multiple username/password attempts in one login attempt
+   + Component :: rudel-general
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Infinote client functionality
+   + Component :: infinote-backend
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** TODO Support for trees of documents
+   + Component :: rudel-general
+   + Type :: task
+   + Reporter :: jan
+   + Assigned ::
+** NEW Get rid of error calls in the server (#58)
+   + Component :: obby-backend
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   It makes no sense to call `error` when something goes wrong in
+   server code that is called from the process filter. Instead, we
+   should try to recover.
+** NEW Global mode line publish state mode does not work for all new buffers (#55)
+   + Component :: rudel-user-interface
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+   `global-mode-line-publish-state-mode` is define using
+   `define-globalized-mode`. This seems to only enabled the associated
+   minor mode for buffers create by `find-file` and after major mode
+   changes. The minor mode is not activated for buffers create by
+   `create-buffer`. Since this is used when subscribing to documents,
+   this is a problem.
+** NEW Handle net6_encryption_info messages (#57)
+   + Component :: obby-backend
+   + Type :: defect
+   + Reporter :: jan
+   + Assigned ::
+** TODO Only read color hue, not complete colors (#53)
+   + Component :: rudel-user-interface
+   + Type :: enhancement
+   + Reporter :: jan
+   + Assigned ::
+   Taking control over saturation and value away from the user makes
+   it impossible to choose unreadable colors.
+
+
+* Milestone rudel-0.2
+** DONE Use state pattern (#18)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Server buffers go out of sync when multi-byte characters are used (#56)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Terminate connections properly when something goes wrong (#51)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Removing documents does not work (#45)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Search list of offline users when new users log in (#44)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Reference card (#2)
+   + Component :: documentation
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE ode-line indicator of buffer status (#6)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Author overlay face may not exist (#54)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Visualization of user status (#9)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Update overlays when users change colors (#23)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Allow to toggle display of author overlays (#33)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Update file headers (#50)
+   + Component :: documentation
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: trivial
+   + Reporter :: jan
+** DONE Proper Zeroconf support (#21)
+   + Component :: zeroconf
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Add discovery component (#22)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Define initialize-instance with slots or &rest slots? (#49)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: major
+   + Reporter :: jan
+** DONE Use oref to get object names (#24)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Overlays should be removed when a buffer is detached from its document (#39)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Unsafe use of (call-next-method) (#48)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Handle `net6_login_failed' message (#10)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Add debug hints to macros (#43)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Use state pattern (#17)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Use with-parsed-arguments (#40)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+
+
+* Milestone rudel-0.1
+** FIXED User names and colors are not checked for conflicts (#12)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Write some html for rudel.sourceforge.net (#27)
+   + Component :: www
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: major
+   + Reporter :: jan
+** INVALID Repeated publishing leads to multiple document instances (#30)
+   + Component :: obby-backend
+   + Resolution :: invalid
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Document suffixes are not handled properly (#42)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Fix license texts (#32)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: trivial
+   + Reporter :: jan
+** WONTFIX Overlays break on last character (#29)
+   + Component :: rudel-user-interface
+   + Resolution :: worksforme
+   + Type :: defect
+   + Priority :: minor
+   + Reporter :: jan
+** FIXED Encodings are not handled in obby backend (#1)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Major mode changes break subscribed buffers (#19)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Editing in overwrite mode breaks synchronization (#35)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Yanking produces insertion and immediate deletion of the region (#36)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Documents with identical names but distinct suffixes map to same buffer (#41)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Killing a buffer does not detach it from its document (#38)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** INVALID Rudel client crashes Gobby (#25)
+   + Component :: obby-general
+   + Resolution :: invalid
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Add screenshot of session with Gobby (#20)
+   + Component :: www
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: trivial
+   + Reporter :: jan
+** DONE Replace 't with t (#34)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Operations of type jupiter-compound cannot be applied to buffers
+   (#31)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+** DONE Do not sync any chunks when buffer is empty (#28)
+   + Component :: obby-backend
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: minor
+   + Reporter :: jan
+** DONE Implement Jupiter algorithm (#13)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: major
+   + Reporter :: jan
+** DONE Replace email address (#26)
+   + Component :: rudel-general
+   + Resolution :: fixed
+   + Type :: task
+   + Priority :: major
+   + Reporter :: jan
+** FIXED Mark contributions using overlays (#4)
+   + Component :: rudel-user-interface
+   + Resolution :: fixed
+   + Type :: enhancement
+   + Priority :: major
+   + Reporter :: jan
+** FIXED When a user leaves and joins a second user object is created (#3)
+   + Component :: obby-general
+   + Resolution :: fixed
+   + Type :: defect
+   + Priority :: major
+   + Reporter :: jan
+
+Local variables:
+mode: org
+end:
diff --git a/emacs.d/lisp/rudel/doc/.svn/all-wcprops b/emacs.d/lisp/rudel/doc/.svn/all-wcprops
new file mode 100644
index 0000000..28e96e7
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/.svn/all-wcprops
@@ -0,0 +1,23 @@
+K 25
+svn:wc:ra_dav:version-url
+V 37
+/svnroot/rudel/!svn/ver/399/trunk/doc
+END
+card.pdf
+K 25
+svn:wc:ra_dav:version-url
+V 46
+/svnroot/rudel/!svn/ver/396/trunk/doc/card.pdf
+END
+Project.ede
+K 25
+svn:wc:ra_dav:version-url
+V 49
+/svnroot/rudel/!svn/ver/297/trunk/doc/Project.ede
+END
+card.tex
+K 25
+svn:wc:ra_dav:version-url
+V 46
+/svnroot/rudel/!svn/ver/399/trunk/doc/card.tex
+END
diff --git a/emacs.d/lisp/rudel/doc/.svn/entries b/emacs.d/lisp/rudel/doc/.svn/entries
new file mode 100644
index 0000000..5128808
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/.svn/entries
@@ -0,0 +1,130 @@
+10
+
+dir
+545
+https://rudel.svn.sourceforge.net/svnroot/rudel/trunk/doc
+https://rudel.svn.sourceforge.net/svnroot/rudel
+
+
+
+2009-10-10T00:39:48.026786Z
+399
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+694b31df-dcbb-44e8-af88-74c7ea918228
+
+card.pdf
+file
+
+
+
+
+2009-11-18T14:01:45.000000Z
+2df6dba381ea9728a9850132f09a68af
+2009-10-10T00:38:34.122289Z
+396
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+68211
+
+Project.ede
+file
+
+
+
+
+2009-11-18T14:01:45.000000Z
+7b9a11f15f24e39437250456cd11bae7
+2009-10-03T01:25:19.588187Z
+297
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+408
+
+card.tex
+file
+
+
+
+
+2009-11-18T14:01:45.000000Z
+be52a552897987dec702a9a2eee7d347
+2009-10-10T00:39:48.026786Z
+399
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+9459
+
diff --git a/emacs.d/lisp/rudel/doc/.svn/text-base/Project.ede.svn-base b/emacs.d/lisp/rudel/doc/.svn/text-base/Project.ede.svn-base
new file mode 100644
index 0000000..0348d84
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/.svn/text-base/Project.ede.svn-base
@@ -0,0 +1,20 @@
+;; Object doc
+;; EDE project file.
+(ede-proj-project "rudel/doc"
+  :name "doc"
+  :file "Project.ede"
+  :targets (list
+   (ede-proj-target-makefile-miscelaneous "card.pdf"
+    :name "card.pdf"
+    :path ""
+    :source '("card.tex")
+    :rules (list
+     (ede-makefile-rule "pdftex"
+      :target "card.pdf"
+      :dependencies "card.tex"
+      :rules '("pdftex -t landscape $<")
+      )
+     )
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/doc/.svn/text-base/card.pdf.svn-base b/emacs.d/lisp/rudel/doc/.svn/text-base/card.pdf.svn-base
new file mode 100644
index 0000000..60ddf36
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/.svn/text-base/card.pdf.svn-base
diff --git a/emacs.d/lisp/rudel/doc/.svn/text-base/card.tex.svn-base b/emacs.d/lisp/rudel/doc/.svn/text-base/card.tex.svn-base
new file mode 100644
index 0000000..8be513d
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/.svn/text-base/card.tex.svn-base
@@ -0,0 +1,329 @@
+%% card.tex --- Reference Card for Rudel 0.2
+%
+% Copyright (c) 1987, 1992 Free Software Foundation, Inc.
+% Copyright (c) 2009 Jan Moringen
+%
+% Author: Stephen Gildea <gildea@erl.mit.edu> (refcard.tex format)
+%         Dave Gillespie <daveg@synaptics.com> (Calc reference card)
+%         Jan Moringen <scymtym@users.sourceforge.net> (Rudel)
+%
+% This file is part of Rudel.
+%
+% Rudel is free software: you can redistribute it and/or modify it
+% under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Rudel is distributed in the hope that it will be useful, but
+% WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+% General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+%% Commentary:
+%
+% The format for this file is adapted from the GNU Emacs reference
+% card version 1.9, by Stephen Gildea and the GNU Calc reference card
+% by Dave Gillespie.
+%
+% This file is intended to be processed by plain TeX.
+% Typical command to format: pdftex -t landscape card.tex
+% Typical command to print:  tex card.tex
+%                            dvips -t landscape card.dvi
+
+
+%% Constants
+%
+
+\def\versionnumber{0.2}
+\def\versiondate{September 2009}
+\def\year{2009}
+
+\def\copyrightnotice{
+\vskip 1ex plus 2 fill\begingroup\small
+\centerline{Copyright \copyright\ \year\ Jan Moringen}
+\centerline{written by Jan Moringen}
+\centerline{for Rudel version \versionnumber\ (\versiondate)}
+
+Permission is granted to make and distribute copies of
+this card provided the copyright notice and this permission notice
+are preserved on all copies.
+
+%For copies of the GNU Emacs Calc manual, write to the Free Software
+%Foundation, Inc., 675 Massachusetts Ave, Cambridge MA 02139.
+
+\endgroup}
+
+
+
+%% Header
+%
+
+% make \bye not \outer so that the \def\bye in the \else clause below
+% can be scanned without complaint.
+\def\bye{\par\vfill\supereject\end}
+
+\newdimen\intercolumnskip
+\newbox\columna
+\newbox\columnb
+
+\def\scaledmag#1{ scaled \magstep #1}
+
+% This format was designed by Stephen Gildea in October 1986.
+\hsize 3.2in
+\vsize 7.95in
+\hoffset -.75in
+\voffset -.745in
+\font\titlefont=cmbx10 \scaledmag2
+\font\headingfont=cmbx10 \scaledmag1
+\font\subheadingfont=cmbx10 \scaledmag0
+\font\smallfont=cmr6
+\font\smallsy=cmsy6
+\font\eightrm=cmr8
+\font\eightbf=cmbx8
+\font\eightit=cmti8
+\font\eighttt=cmtt8
+\font\eightsy=cmsy8
+\textfont0=\eightrm
+\textfont2=\eightsy
+\font\notefont=cmti7
+\def\rm{\eightrm}
+\def\bf{\eightbf}
+\def\it{\eightit}
+\def\tt{\eighttt}
+\normalbaselineskip=.8\normalbaselineskip
+\normallineskip=.8\normallineskip
+\normallineskiplimit=.8\normallineskiplimit
+\normalbaselines\rm		%make definitions take effect
+
+\let\maxcolumn=c
+\nopagenumbers
+
+\intercolumnskip=.46in
+\def\abc{a}
+\output={%
+  % This next line is useful when designing the layout.
+  %\immediate\write16{Column \folio\abc\space starts with \firstmark}
+  \if \maxcolumn\abc \multicolumnformat \global\def\abc{a}
+  \else\if a\abc
+  \global\setbox\columna\columnbox \global\def\abc{b}
+  %% in case we never use \columnb (two-column mode)
+  \global\setbox\columnb\hbox to -\intercolumnskip{}
+  \else
+  \global\setbox\columnb\columnbox \global\def\abc{c}\fi\fi}
+
+\def\multicolumnformat{\shipout\vbox{\makeheadline
+  \hbox{\box\columna\hskip\intercolumnskip
+  \box\columnb\hskip\intercolumnskip\columnbox}
+  \makefootline}\advancepageno}
+\def\columnbox{\leftline{\pagebody}}
+
+\def\bye{\par\vfill\supereject
+  \if a\abc \else\null\vfill\eject\fi
+  \if a\abc \else\null\vfill\eject\fi
+  \end}
+
+% we won't be using math mode much, so redefine some of the characters
+% we might want to talk about
+\catcode`\^=12
+\catcode`\_=12
+
+\chardef\\=`\\
+\chardef\{=`\{
+\chardef\}=`\}
+
+\parindent 0pt
+\parskip 1ex plus .5ex minus .5ex
+
+\def\small{\smallfont\textfont2=\smallsy\baselineskip=.8\baselineskip}
+
+\outer\def\newcolumn{\vfill\eject}
+
+\outer\def\title#1{{\titlefont\centerline{#1}}\vskip 1ex plus .5ex}
+
+\outer\def\section#1{\par\filbreak
+  \vskip 3ex plus 2ex minus 2ex {\headingfont #1}\mark{#1}%
+  \vskip 2ex plus 1ex minus 1.5ex}
+
+\outer\def\subsection#1{\par\filbreak
+  \vskip 3ex plus 2ex minus 2ex {\subheadingfont #1}\mark{#1}%
+  \vskip 2ex plus 1ex minus 1.5ex}
+
+\newdimen\keyindent
+
+\def\beginindentedkeys{\keyindent=1em}
+\def\endindentedkeys{\keyindent=0em}
+\endindentedkeys
+
+\def\paralign{\vskip\parskip\halign}
+
+\def\<#1>{$\langle${\rm #1}$\rangle$}
+
+\def\kbd#1{{\tt#1}\null} %\null so not an abbrev even if period follows
+
+\def\key#1#2{\leavevmode\hbox to \hsize{\vtop
+  {\hsize=.75\hsize\rightskip=1em
+  \hskip\keyindent\relax#1}\kbd{#2}\hfil}}
+
+\newbox\metaxbox
+\setbox\metaxbox\hbox{\kbd{M-x }}
+\newdimen\metaxwidth
+\metaxwidth=\wd\metaxbox
+
+% Redefine to make spaces a bit smaller
+\let\wkbd=\kbd
+\def\kbd#1{{\spaceskip=.37em\tt#1}\null}
+
+\def\wkey#1#2{\leavevmode\hbox to \hsize{\vtop
+  {\hsize=.75\hsize\rightskip=1em
+  \hskip\keyindent\relax#1}\wkbd{#2}\hfil}}
+
+\def\ccc{C-c\ c\ }
+\def\,{{\rm ,\hskip.55em}\ignorespaces}
+\def\lesssectionskip{\vskip-1.5ex}
+
+\def\iline#1{\par\line{\hskip1em\relax #1\hfill}\par}
+
+\font\eighti=cmmi8
+\textfont1=\eighti
+
+
+%% Document
+%
+
+\title{Rudel Reference Card}\vskip-1ex
+\centerline{\tt http://rudel.sourceforge.net}\vskip1ex
+\centerline{(for Rudel version \versionnumber\ of \versiondate)}
+
+\section{Key Bindings}
+
+\lesssectionskip
+{\notefont All key bindings are only available when the global Rudel
+minor mode is active. See ``Minor Modes'' below.}
+
+\subsection{Hosting and Joining}
+
+\wkey{Join a Rudel session}{\ccc j}
+\wkey{Leave a Rudel session}{\ccc e}
+
+\wkey{Host a Rudel session}{\ccc h}
+
+\subsection{In a Session}
+
+The following commands are available once a Rudel session has been
+joined:
+
+\key{Change color}{\ccc c}
+
+\key{Create and publish document for buffer}{\ccc p}
+\key{Subscribe to a document}{\ccc s}
+
+The following commands are only available if the current buffer has an
+associated document (achieved by publishing or subscribing):
+
+\key{Detach buffer from document (unsubscribe)}{\ccc u}
+
+\section{Minor Modes}
+
+\subsection{Global Rudel Minor Mode}
+
+The global Rudel minor mode global-rudel-minor-mode is responsible for
+installing the Rudel menu and keymap.
+
+\subsection{Participants in Header Line}
+
+The mode ({\tt rudel-header-subscriptions-minor-mode}) shows
+subscribed users in the header line of the buffer.
+
+The associated global mode ({\tt global-rudel-header-subscriptions
+mode}) turns the mode on or off in all suitable buffers.
+
+\subsection{Buffer Status in Mode Line}
+
+The mode ({\tt rudel-mode-line-publish-state-minor-mode}) shows the
+publication state of the buffer in its mode line ({\tt P}: published,
+{\tt -}: not published)
+
+The associated global mode ({\tt
+global-rudel-mode-line-publish-state-mode}) turns the mode on or off
+in all suitable buffers.
+
+\eject
+
+\section{Backends}
+
+\lesssectionskip
+In Rudel, various kinds of backends are used to provide multiple
+pluggable implementations of functionalities like communication
+protocols, network transport, session initiation and parts of the user
+interface.
+
+\subsection{Protocol}
+
+{\bf Obby}
+
+This backend implements the obby protocol used by the Gobby
+collaborative editor until (including) version 4.9.
+
+\subsection{Session Initiation}
+
+{\bf Configured Sessions}
+
+Frequently used sessions can be configured permanently using the {\tt
+rudel-configured-sessions} customization variable. When there are
+configured sessions, connecting to one of these session is offered
+when joining a session using \kbd{\ccc j}.
+
+{\bf Zeroconf}
+
+The Zeroconf backends discovers collaboration sessions which are
+advertised using, well Zeroconf. Currently, it works for Rudel (obby
+backend) and Obby servers. When there are Zeroconf-advertised
+sessions, using \kbd{\ccc j} to join a session will display these
+sessions.
+
+\section{Examples}
+
+\subsection{Joining a Session with the obby backend}
+
+{\bf Without Zeroconf Discovery}
+
+\kbd{\ccc j}\hfil\break
+{\tt Server: }{\it SERVER} \kbd{RET}\hfil\break
+{\tt Port (default 6522): } \kbd{RET}\hfil\break
+{\tt Username: }{\it NAME} \kbd{RET}\hfil\break
+{\tt Color: }{\it COLOR} \kbd{RET}\hfil\break
+{\notefont (use bright colors like yellow)}\hfil\break
+{\it When connecting to a Rudel server:}\hfil\break
+-\hskip2ex {\tt Use Encryption (yes or no): }{\it NO} \kbd{RET}\hfil\break
+{\it When connecting to a Gobby server:}\hfil\break
+-\hskip2ex {\tt Use Encryption (yes or no): }{\it YES} \kbd{RET}\hfil\break
+{\tt Global Password: }{\it PASSWORD} \kbd{RET}\hfil\break
+{\it This password controls access to the session; just \kbd{RET} for
+none}\hfil\break
+{\tt User Password: }{\it PASSWORD} \kbd{RET}\hfil\break
+{\it This password prevents name stealing; just \kbd{RET} for
+none}\hfil\break
+
+{\bf With Zeroconf Discovery}
+
+\kbd{\ccc j}\hfil\break
+{\tt Choose Session: }Zeroconf advertised session {\it
+"NAME"}\kbd{RET}\hfil\break
+{\notefont (Note: by choosing "ask-protocol" here, you can still get the
+above behavior)}\hfil\break
+{\tt Username: }{\it NAME} \kbd{RET}\hfil\break
+{\tt Color: }{\it COLOR} \kbd{RET}\hfil\break
+{\tt Global Password: }{\it PASSWORD} \kbd{RET}\hfil\break
+{\tt User Password: }{\it PASSWORD} \kbd{RET}\hfil
+
+\copyrightnotice
+
+\bye
+
+% Local variables:
+% mode: plain-TeX; eval: (tex-pdf-mode);
+% End:
diff --git a/emacs.d/lisp/rudel/doc/Project.ede b/emacs.d/lisp/rudel/doc/Project.ede
new file mode 100644
index 0000000..0348d84
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/Project.ede
@@ -0,0 +1,20 @@
+;; Object doc
+;; EDE project file.
+(ede-proj-project "rudel/doc"
+  :name "doc"
+  :file "Project.ede"
+  :targets (list
+   (ede-proj-target-makefile-miscelaneous "card.pdf"
+    :name "card.pdf"
+    :path ""
+    :source '("card.tex")
+    :rules (list
+     (ede-makefile-rule "pdftex"
+      :target "card.pdf"
+      :dependencies "card.tex"
+      :rules '("pdftex -t landscape $<")
+      )
+     )
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/doc/card.pdf b/emacs.d/lisp/rudel/doc/card.pdf
new file mode 100644
index 0000000..60ddf36
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/card.pdf
diff --git a/emacs.d/lisp/rudel/doc/card.tex b/emacs.d/lisp/rudel/doc/card.tex
new file mode 100644
index 0000000..8be513d
--- /dev/null
+++ b/emacs.d/lisp/rudel/doc/card.tex
@@ -0,0 +1,329 @@
+%% card.tex --- Reference Card for Rudel 0.2
+%
+% Copyright (c) 1987, 1992 Free Software Foundation, Inc.
+% Copyright (c) 2009 Jan Moringen
+%
+% Author: Stephen Gildea <gildea@erl.mit.edu> (refcard.tex format)
+%         Dave Gillespie <daveg@synaptics.com> (Calc reference card)
+%         Jan Moringen <scymtym@users.sourceforge.net> (Rudel)
+%
+% This file is part of Rudel.
+%
+% Rudel is free software: you can redistribute it and/or modify it
+% under the terms of the GNU General Public License as published by
+% the Free Software Foundation, either version 3 of the License, or
+% (at your option) any later version.
+%
+% Rudel is distributed in the hope that it will be useful, but
+% WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+% General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+%% Commentary:
+%
+% The format for this file is adapted from the GNU Emacs reference
+% card version 1.9, by Stephen Gildea and the GNU Calc reference card
+% by Dave Gillespie.
+%
+% This file is intended to be processed by plain TeX.
+% Typical command to format: pdftex -t landscape card.tex
+% Typical command to print:  tex card.tex
+%                            dvips -t landscape card.dvi
+
+
+%% Constants
+%
+
+\def\versionnumber{0.2}
+\def\versiondate{September 2009}
+\def\year{2009}
+
+\def\copyrightnotice{
+\vskip 1ex plus 2 fill\begingroup\small
+\centerline{Copyright \copyright\ \year\ Jan Moringen}
+\centerline{written by Jan Moringen}
+\centerline{for Rudel version \versionnumber\ (\versiondate)}
+
+Permission is granted to make and distribute copies of
+this card provided the copyright notice and this permission notice
+are preserved on all copies.
+
+%For copies of the GNU Emacs Calc manual, write to the Free Software
+%Foundation, Inc., 675 Massachusetts Ave, Cambridge MA 02139.
+
+\endgroup}
+
+
+
+%% Header
+%
+
+% make \bye not \outer so that the \def\bye in the \else clause below
+% can be scanned without complaint.
+\def\bye{\par\vfill\supereject\end}
+
+\newdimen\intercolumnskip
+\newbox\columna
+\newbox\columnb
+
+\def\scaledmag#1{ scaled \magstep #1}
+
+% This format was designed by Stephen Gildea in October 1986.
+\hsize 3.2in
+\vsize 7.95in
+\hoffset -.75in
+\voffset -.745in
+\font\titlefont=cmbx10 \scaledmag2
+\font\headingfont=cmbx10 \scaledmag1
+\font\subheadingfont=cmbx10 \scaledmag0
+\font\smallfont=cmr6
+\font\smallsy=cmsy6
+\font\eightrm=cmr8
+\font\eightbf=cmbx8
+\font\eightit=cmti8
+\font\eighttt=cmtt8
+\font\eightsy=cmsy8
+\textfont0=\eightrm
+\textfont2=\eightsy
+\font\notefont=cmti7
+\def\rm{\eightrm}
+\def\bf{\eightbf}
+\def\it{\eightit}
+\def\tt{\eighttt}
+\normalbaselineskip=.8\normalbaselineskip
+\normallineskip=.8\normallineskip
+\normallineskiplimit=.8\normallineskiplimit
+\normalbaselines\rm		%make definitions take effect
+
+\let\maxcolumn=c
+\nopagenumbers
+
+\intercolumnskip=.46in
+\def\abc{a}
+\output={%
+  % This next line is useful when designing the layout.
+  %\immediate\write16{Column \folio\abc\space starts with \firstmark}
+  \if \maxcolumn\abc \multicolumnformat \global\def\abc{a}
+  \else\if a\abc
+  \global\setbox\columna\columnbox \global\def\abc{b}
+  %% in case we never use \columnb (two-column mode)
+  \global\setbox\columnb\hbox to -\intercolumnskip{}
+  \else
+  \global\setbox\columnb\columnbox \global\def\abc{c}\fi\fi}
+
+\def\multicolumnformat{\shipout\vbox{\makeheadline
+  \hbox{\box\columna\hskip\intercolumnskip
+  \box\columnb\hskip\intercolumnskip\columnbox}
+  \makefootline}\advancepageno}
+\def\columnbox{\leftline{\pagebody}}
+
+\def\bye{\par\vfill\supereject
+  \if a\abc \else\null\vfill\eject\fi
+  \if a\abc \else\null\vfill\eject\fi
+  \end}
+
+% we won't be using math mode much, so redefine some of the characters
+% we might want to talk about
+\catcode`\^=12
+\catcode`\_=12
+
+\chardef\\=`\\
+\chardef\{=`\{
+\chardef\}=`\}
+
+\parindent 0pt
+\parskip 1ex plus .5ex minus .5ex
+
+\def\small{\smallfont\textfont2=\smallsy\baselineskip=.8\baselineskip}
+
+\outer\def\newcolumn{\vfill\eject}
+
+\outer\def\title#1{{\titlefont\centerline{#1}}\vskip 1ex plus .5ex}
+
+\outer\def\section#1{\par\filbreak
+  \vskip 3ex plus 2ex minus 2ex {\headingfont #1}\mark{#1}%
+  \vskip 2ex plus 1ex minus 1.5ex}
+
+\outer\def\subsection#1{\par\filbreak
+  \vskip 3ex plus 2ex minus 2ex {\subheadingfont #1}\mark{#1}%
+  \vskip 2ex plus 1ex minus 1.5ex}
+
+\newdimen\keyindent
+
+\def\beginindentedkeys{\keyindent=1em}
+\def\endindentedkeys{\keyindent=0em}
+\endindentedkeys
+
+\def\paralign{\vskip\parskip\halign}
+
+\def\<#1>{$\langle${\rm #1}$\rangle$}
+
+\def\kbd#1{{\tt#1}\null} %\null so not an abbrev even if period follows
+
+\def\key#1#2{\leavevmode\hbox to \hsize{\vtop
+  {\hsize=.75\hsize\rightskip=1em
+  \hskip\keyindent\relax#1}\kbd{#2}\hfil}}
+
+\newbox\metaxbox
+\setbox\metaxbox\hbox{\kbd{M-x }}
+\newdimen\metaxwidth
+\metaxwidth=\wd\metaxbox
+
+% Redefine to make spaces a bit smaller
+\let\wkbd=\kbd
+\def\kbd#1{{\spaceskip=.37em\tt#1}\null}
+
+\def\wkey#1#2{\leavevmode\hbox to \hsize{\vtop
+  {\hsize=.75\hsize\rightskip=1em
+  \hskip\keyindent\relax#1}\wkbd{#2}\hfil}}
+
+\def\ccc{C-c\ c\ }
+\def\,{{\rm ,\hskip.55em}\ignorespaces}
+\def\lesssectionskip{\vskip-1.5ex}
+
+\def\iline#1{\par\line{\hskip1em\relax #1\hfill}\par}
+
+\font\eighti=cmmi8
+\textfont1=\eighti
+
+
+%% Document
+%
+
+\title{Rudel Reference Card}\vskip-1ex
+\centerline{\tt http://rudel.sourceforge.net}\vskip1ex
+\centerline{(for Rudel version \versionnumber\ of \versiondate)}
+
+\section{Key Bindings}
+
+\lesssectionskip
+{\notefont All key bindings are only available when the global Rudel
+minor mode is active. See ``Minor Modes'' below.}
+
+\subsection{Hosting and Joining}
+
+\wkey{Join a Rudel session}{\ccc j}
+\wkey{Leave a Rudel session}{\ccc e}
+
+\wkey{Host a Rudel session}{\ccc h}
+
+\subsection{In a Session}
+
+The following commands are available once a Rudel session has been
+joined:
+
+\key{Change color}{\ccc c}
+
+\key{Create and publish document for buffer}{\ccc p}
+\key{Subscribe to a document}{\ccc s}
+
+The following commands are only available if the current buffer has an
+associated document (achieved by publishing or subscribing):
+
+\key{Detach buffer from document (unsubscribe)}{\ccc u}
+
+\section{Minor Modes}
+
+\subsection{Global Rudel Minor Mode}
+
+The global Rudel minor mode global-rudel-minor-mode is responsible for
+installing the Rudel menu and keymap.
+
+\subsection{Participants in Header Line}
+
+The mode ({\tt rudel-header-subscriptions-minor-mode}) shows
+subscribed users in the header line of the buffer.
+
+The associated global mode ({\tt global-rudel-header-subscriptions
+mode}) turns the mode on or off in all suitable buffers.
+
+\subsection{Buffer Status in Mode Line}
+
+The mode ({\tt rudel-mode-line-publish-state-minor-mode}) shows the
+publication state of the buffer in its mode line ({\tt P}: published,
+{\tt -}: not published)
+
+The associated global mode ({\tt
+global-rudel-mode-line-publish-state-mode}) turns the mode on or off
+in all suitable buffers.
+
+\eject
+
+\section{Backends}
+
+\lesssectionskip
+In Rudel, various kinds of backends are used to provide multiple
+pluggable implementations of functionalities like communication
+protocols, network transport, session initiation and parts of the user
+interface.
+
+\subsection{Protocol}
+
+{\bf Obby}
+
+This backend implements the obby protocol used by the Gobby
+collaborative editor until (including) version 4.9.
+
+\subsection{Session Initiation}
+
+{\bf Configured Sessions}
+
+Frequently used sessions can be configured permanently using the {\tt
+rudel-configured-sessions} customization variable. When there are
+configured sessions, connecting to one of these session is offered
+when joining a session using \kbd{\ccc j}.
+
+{\bf Zeroconf}
+
+The Zeroconf backends discovers collaboration sessions which are
+advertised using, well Zeroconf. Currently, it works for Rudel (obby
+backend) and Obby servers. When there are Zeroconf-advertised
+sessions, using \kbd{\ccc j} to join a session will display these
+sessions.
+
+\section{Examples}
+
+\subsection{Joining a Session with the obby backend}
+
+{\bf Without Zeroconf Discovery}
+
+\kbd{\ccc j}\hfil\break
+{\tt Server: }{\it SERVER} \kbd{RET}\hfil\break
+{\tt Port (default 6522): } \kbd{RET}\hfil\break
+{\tt Username: }{\it NAME} \kbd{RET}\hfil\break
+{\tt Color: }{\it COLOR} \kbd{RET}\hfil\break
+{\notefont (use bright colors like yellow)}\hfil\break
+{\it When connecting to a Rudel server:}\hfil\break
+-\hskip2ex {\tt Use Encryption (yes or no): }{\it NO} \kbd{RET}\hfil\break
+{\it When connecting to a Gobby server:}\hfil\break
+-\hskip2ex {\tt Use Encryption (yes or no): }{\it YES} \kbd{RET}\hfil\break
+{\tt Global Password: }{\it PASSWORD} \kbd{RET}\hfil\break
+{\it This password controls access to the session; just \kbd{RET} for
+none}\hfil\break
+{\tt User Password: }{\it PASSWORD} \kbd{RET}\hfil\break
+{\it This password prevents name stealing; just \kbd{RET} for
+none}\hfil\break
+
+{\bf With Zeroconf Discovery}
+
+\kbd{\ccc j}\hfil\break
+{\tt Choose Session: }Zeroconf advertised session {\it
+"NAME"}\kbd{RET}\hfil\break
+{\notefont (Note: by choosing "ask-protocol" here, you can still get the
+above behavior)}\hfil\break
+{\tt Username: }{\it NAME} \kbd{RET}\hfil\break
+{\tt Color: }{\it COLOR} \kbd{RET}\hfil\break
+{\tt Global Password: }{\it PASSWORD} \kbd{RET}\hfil\break
+{\tt User Password: }{\it PASSWORD} \kbd{RET}\hfil
+
+\copyrightnotice
+
+\bye
+
+% Local variables:
+% mode: plain-TeX; eval: (tex-pdf-mode);
+% End:
diff --git a/emacs.d/lisp/rudel/icons/.svn/all-wcprops b/emacs.d/lisp/rudel/icons/.svn/all-wcprops
new file mode 100644
index 0000000..74d10a4
--- /dev/null
+++ b/emacs.d/lisp/rudel/icons/.svn/all-wcprops
@@ -0,0 +1,41 @@
+K 25
+svn:wc:ra_dav:version-url
+V 39
+/svnroot/rudel/!svn/ver/271/trunk/icons
+END
+connected.svg
+K 25
+svn:wc:ra_dav:version-url
+V 53
+/svnroot/rudel/!svn/ver/271/trunk/icons/connected.svg
+END
+disconnected.svg
+K 25
+svn:wc:ra_dav:version-url
+V 56
+/svnroot/rudel/!svn/ver/271/trunk/icons/disconnected.svg
+END
+person.svg
+K 25
+svn:wc:ra_dav:version-url
+V 50
+/svnroot/rudel/!svn/ver/271/trunk/icons/person.svg
+END
+plaintext.svg
+K 25
+svn:wc:ra_dav:version-url
+V 53
+/svnroot/rudel/!svn/ver/271/trunk/icons/plaintext.svg
+END
+encrypted.svg
+K 25
+svn:wc:ra_dav:version-url
+V 53
+/svnroot/rudel/!svn/ver/271/trunk/icons/encrypted.svg
+END
+document.svg
+K 25
+svn:wc:ra_dav:version-url
+V 52
+/svnroot/rudel/!svn/ver/271/trunk/icons/document.svg
+END
diff --git a/emacs.d/lisp/rudel/icons/.svn/entries b/emacs.d/lisp/rudel/icons/.svn/entries
new file mode 100644
index 0000000..066c288
--- /dev/null
+++ b/emacs.d/lisp/rudel/icons/.svn/entries
@@ -0,0 +1,232 @@
+10
+
+dir
+545
+https://rudel.svn.sourceforge.net/svnroot/rudel/trunk/icons
+https://rudel.svn.sourceforge.net/svnroot/rudel
+
+
+
+2009-10-03T01:13:36.139341Z
+271
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+
+
+
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+
+
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+
+694b31df-dcbb-44e8-af88-74c7ea918228
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+
+
+
+
+2009-11-18T14:01:46.000000Z
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+file
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+
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+
+2009-11-18T14:01:46.000000Z
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+
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+
+2009-11-18T14:01:46.000000Z
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diff --git a/emacs.d/lisp/rudel/icons/.svn/text-base/connected.svg.svn-base b/emacs.d/lisp/rudel/icons/.svn/text-base/connected.svg.svn-base
new file mode 100644
index 0000000..3777037
--- /dev/null
+++ b/emacs.d/lisp/rudel/icons/.svn/text-base/connected.svg.svn-base
@@ -0,0 +1,2479 @@
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+<!-- Created with Inkscape (http://www.inkscape.org/) -->
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+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="16"
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+   sodipodi:version="0.32"
+   inkscape:version="0.46"
+   sodipodi:docbase="/home/dobey/Projects/gnome-icon-theme/scalable/status"
+   sodipodi:docname="connected.svg"
+   inkscape:output_extension="org.inkscape.output.svg.inkscape"
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diff --git a/emacs.d/lisp/rudel/icons/.svn/text-base/disconnected.svg.svn-base b/emacs.d/lisp/rudel/icons/.svn/text-base/disconnected.svg.svn-base
new file mode 100644
index 0000000..5a8de65
--- /dev/null
+++ b/emacs.d/lisp/rudel/icons/.svn/text-base/disconnected.svg.svn-base
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new file mode 100644
index 0000000..8c32cc6
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index 0000000..9abbb02
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diff --git a/emacs.d/lisp/rudel/jupiter/.svn/text-base/Project.ede.svn-base b/emacs.d/lisp/rudel/jupiter/.svn/text-base/Project.ede.svn-base
new file mode 100644
index 0000000..275d1ed
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/.svn/text-base/Project.ede.svn-base
@@ -0,0 +1,14 @@
+;; Object rudel/jupiter
+;; EDE project file.
+(ede-proj-project "rudel/jupiter"
+  :name "jupiter"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp "jupiter"
+    :name "jupiter"
+    :path ""
+    :source '("jupiter.el" "jupiter-operation.el" "jupiter-insert.el" "jupiter-delete.el" "jupiter-compound.el" "jupiter-nop.el")
+    :aux-packages '("rudel")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-compound.el.svn-base b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-compound.el.svn-base
new file mode 100644
index 0000000..789bbc2
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-compound.el.svn-base
@@ -0,0 +1,89 @@
+;;; jupiter-compound.el --- Jupiter compound operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, compound
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-compound' implements a compound operation comprised
+;; of a number of child operations.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-compound
+;;
+
+(defclass jupiter-compound (jupiter-operation)
+  ((children :initarg  :children
+	     :type     list
+	     :initform nil
+	     :documentation
+	     ""))
+  "Objects of this class are operations, which are composed of a
+number of child operation.")
+
+;; TODO this has side effects. It can only be called once
+(defmethod rudel-apply ((this jupiter-compound) object)
+  "Apply THIS to BUFFER by applying the child operation."
+  (with-slots (children) this
+    (let ((child (first children))
+	  (rest  (rest  children)))
+      ;; Apply all child operations
+      (while child
+	(rudel-apply child object)
+	;; For each applied child operation, transform remaining
+	;; operation with the applied operation.
+	(dolist (next rest)
+	  (setf next (jupiter-transform child next)))
+	;; Advance to next child operation.
+	(setq child (first rest)
+	      rest  (rest rest)))))
+  )
+
+(defmethod jupiter-transform ((this jupiter-compound) other)
+  "Transform OTHER using the child operations of THIS."
+  (with-slots (children) this
+    (dolist (child children) ;; TODO reverse children?
+      (setq other (jupiter-transform child other)))
+    other))
+
+(defmethod object-print ((this jupiter-compound) &rest strings)
+  "Add number of children to string representation of THIS."
+  (with-slots (children) this
+    (call-next-method
+     this
+     (format " children %d" (length children)))))
+
+(provide 'jupiter-compound)
+;;; jupiter-compound.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-delete.el.svn-base b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-delete.el.svn-base
new file mode 100644
index 0000000..db2e985
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-delete.el.svn-base
@@ -0,0 +1,176 @@
+;;; jupiter-delete.el --- Jupiter delete operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, delete
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-delete' implements a delete operation for the
+;; Jupiter algorithm.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-operations)
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-delete
+;;
+
+(defclass jupiter-delete (jupiter-operation
+			  rudel-delete-op)
+  ()
+  "Objects of this class represent deletions in buffers.")
+
+(defmethod jupiter-transform ((this jupiter-delete) other)
+  "Transform other using THIS.
+OTHER is destructively modified or replaced."
+  (cond
+
+   ;;
+   ;; Transform an insert operation
+   ;;
+   ((jupiter-insert-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)) other
+	(cond
+	 ;;
+	 ;; <other>
+	 ;;         <this>
+	 ;;
+	 ((<= other-to this-from))
+
+	 ;;        <other>
+	 ;; <this>
+	 ((> other-from this-to)
+	  (decf other-from this-length))
+
+	 ;;   <other>
+	 ;; <  this  >
+	 ((and (> other-from this-from) (< other-to this-to))
+	  (setq other-from this-from))
+	 )))
+    )
+
+   ;;
+   ;; Transform a delete operation
+   ;;
+   ((jupiter-delete-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)) other
+	(cond
+
+	 ;;        <other>
+	 ;; <this>
+	 ;; OTHER deleted a region after the region deleted by
+	 ;; THIS. Therefore OTHER has to be shifted by the length of
+	 ;; the deleted region.
+	 ((> other-from this-to)
+	  (decf other-from this-length)
+	  (decf other-to   this-length))
+
+	 ;; <other>
+	 ;;         <this>
+	 ;; OTHER deleted a region before the region affected by
+	 ;; THIS. That is not affected by THIS operation.
+	 ((<= other-to this-from))
+
+	 ;; <  other  >
+	 ;;   <this>
+	 ((and (>= other-from this-from) (>= other-to this-to))
+	  (decf other-to this-length))
+
+	 ;; <other>
+	 ;;    <this>
+	 ((and (< other-from this-from) (< other-to this-to))
+	  (decf other-to (- other-to this-to)))
+
+	 ;;    <other>
+	 ;; <this>
+	 ;; The region deleted by OTHER overlaps with the region
+	 ;; deleted by THIS, such that a part of the region of this is
+	 ;; before the region of OTHER. The first part of the region
+	 ;; deleted by OTHER has already been deleted. Therefore, the
+	 ;; start of OTHER has to be shifted by the length of the
+	 ;; overlap.
+	 ((and (< other-from this-to) (> other-to this-to))
+	  (setq other-from this-from)
+	  (incf other-to   (+ other-from (- other-to this-to))))
+
+	 ;;   <other>
+	 ;; <  this   >
+	 ;; The region deleted by OTHER is completely contained in
+	 ;; the region affected by THIS. Therefore, OTHER must not
+	 ;; be executed.
+	 ((and (>= other-from this-from) (<= other-to this-to))
+	  (setq other (jupiter-nop "nop")))
+
+	 (t (error "logic error in (jupiter-transform (x jupiter-delete) (y jupiter-delete))"))
+	 ))))
+
+   ;;
+   ;; Transform a compound operation
+   ;;
+   ((jupiter-compound-p other) ;; TODO encapsulation violation
+    (with-slots (children) other
+      (dolist (child children)
+	(setf child (jupiter-transform this child)))))
+
+   ;;
+   ;; Transform a nop operation
+   ;;
+   ((jupiter-nop-p other))
+
+   ;; TODO this is for debugging
+   (t (error "Cannot transform operation of type `%s'"
+	     (object-class other))))
+  other)
+
+(defmethod object-print ((this jupiter-delete) &rest strings)
+  "Add from, to and length to string representation of THIS."
+  (with-slots (from to length) this
+    (call-next-method
+     this
+     (format " from %d" from)
+     (format " to %d" to)
+     (format " length %d" length)))
+  )
+
+(provide 'jupiter-delete)
+;;; jupiter-delete.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-insert.el.svn-base b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-insert.el.svn-base
new file mode 100644
index 0000000..339270e
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-insert.el.svn-base
@@ -0,0 +1,165 @@
+;;; jupiter-insert.el --- Jupiter insert operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, insert
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-insert' implements an insert operation for the
+;; Jupiter algorithm.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-operations)
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-insert
+;;
+
+(defclass jupiter-insert (jupiter-operation
+			  rudel-insert-op)
+  ()
+  "Objects of this class represent insertions into buffers.")
+
+(defmethod jupiter-transform ((this jupiter-insert) other)
+  "Transform OTHER using THIS."
+  (cond
+
+   ;;
+   ;; Transform an insert operation
+   ;;
+   ((jupiter-insert-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)
+		 (this-data   :data)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)
+		   (other-data   :data)) other
+	(cond
+	 ;;
+	 ;; <other>
+	 ;;         <this>
+	 ;; No need to do anything in this case.
+	 ;; ((< other-from this-from))
+
+	 ;;
+	 ;;        <other>
+	 ;; <this>
+	 ;;
+	 ((> other-from this-from)
+	  (incf other-from this-length))
+
+	 ;;
+	 ;; <other>
+	 ;; <this>
+	 ;; OTHER inserted at the same start position as we did. Since
+	 ;; the situation is symmetric in the location properties of
+	 ;; OTHER and THIS, we use the inserted data to construct an
+	 ;; ordering.
+	 ((= other-from this-from)
+	  (when (string< this-data other-data)
+	    (incf other-from this-length)))))))
+
+   ;;
+   ;; Transform a delete operation
+   ;;
+   ((jupiter-delete-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)) other
+	(cond
+
+	 ;;
+	 ;; <other>
+	 ;;         <this>
+	 ;; just keep OTHER
+
+	 ;;
+	 ;; <other> and   <other> and        <other>
+	 ;; <this>      <this>        <this>
+	 ((>= other-from this-from)
+	  (incf other-from this-length)
+	  (incf other-to   this-length))
+
+	 ;;
+	 ;; <  other  >
+	 ;;   <this>
+	 ;; OTHER deleted a region that includes the point at which THIS
+	 ;; inserted in its interior. OTHER has to be split into one
+	 ;; deletion before and one delete after the inserted data.
+	 ((and (< other-from this-from) (> other-to this-to))
+	  (setq other
+		(jupiter-compound "compound"
+	         :children (list (jupiter-delete "delete-left"
+				  :from other-from
+				  :to   this-from)
+				 (jupiter-delete "delete-right"
+				  :from this-to
+				  :to   (+ other-to this-length))))))
+	 ))))
+
+   ;;
+   ;; Transform a compound operation
+   ;;
+   ((jupiter-compound-p other) ;; TODO encapsulation violation
+    (with-slots (children) other
+      (dolist (child children)
+	(setf child (jupiter-transform this child)))))
+
+   ;;
+   ;; Transform a nop operation
+   ;;
+   ((jupiter-nop-p other))
+
+   ;; TODO this is for debugging
+   (t (error "Cannot transform operation of type `%s'"
+	     (object-class other))))
+  other)
+
+(defmethod object-print ((this jupiter-insert) &rest strings)
+  "Add from, to, length and data to string representation of THIS."
+  (with-slots (from to length data) this
+    (call-next-method
+     this
+     (format " from %d" from)
+     (format " to %d" to)
+     (format " length %d" length)
+     (format " data \"%s\"" data)))
+  )
+
+(provide 'jupiter-insert)
+;;; jupiter-insert.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-nop.el.svn-base b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-nop.el.svn-base
new file mode 100644
index 0000000..e0f4a5c
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-nop.el.svn-base
@@ -0,0 +1,59 @@
+;;; jupiter-nop.el --- Jupiter no operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, nop
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-nop' implements a no-operation for the Jupiter
+;; algorithm.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-nop
+;;
+
+(defclass jupiter-nop (jupiter-operation)
+  ()
+  "Operation, which does not change anything.")
+
+(defmethod rudel-apply ((this jupiter-nop) object)
+  "Applying THIS does not change OBJECT.")
+
+(defmethod jupiter-transform ((this jupiter-nop) other)
+  "Transforming OTHER with THIS simply returns OTHER."
+  other)
+
+(provide 'jupiter-nop)
+;;; jupiter-nop.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-operation.el.svn-base b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-operation.el.svn-base
new file mode 100644
index 0000000..bc91fee
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter-operation.el.svn-base
@@ -0,0 +1,61 @@
+;;; jupiter-operation.el --- Operation base class for jupiter algorithm
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Jupiter, operation, base
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; The class jupiter-operation is a base class for Jupiter operation
+;; classes.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-operations)
+
+
+;;; Class jupiter-operation
+;;
+
+(defclass jupiter-operation (rudel-operation)
+  ()
+  "Objects of derived classes represent operations, which change documents.
+Objects can transform each other to produce sequences of
+operations, which produce identical changes than permutations of
+the same operations."
+  :abstract t)
+
+;; This one really could use multiple dispatch
+(defgeneric jupiter-transform ((this jupiter-operation) other)
+  "Transform OTHER such that the effect of applying it after THIS are equal to applying OTHER before THIS unmodified.
+In general, OTHER is destructively modified or replaced.")
+
+(provide 'jupiter-operation)
+;;; jupiter-operation.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter.el.svn-base b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter.el.svn-base
new file mode 100644
index 0000000..d285041
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/.svn/text-base/jupiter.el.svn-base
@@ -0,0 +1,135 @@
+;;; jupiter.el --- An implementation of the Jupiter algorithm
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, jupiter, algorithm, distributed, integrity
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains an implementation of the jupiter algorithm,
+;; which ensures the synchronization of data shared between multiple
+;; peers despite differences in network latency.
+;;
+;; This implementation is partly based on the implementation used in
+;; the obby library <http://gobby.0x539.de/trac/>. Note, however, that
+;; the details of the implementations differ.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'jupiter-operation)
+(require 'jupiter-insert)
+(require 'jupiter-delete)
+(require 'jupiter-compound)
+(require 'jupiter-nop)
+
+
+;;; Class jupiter-context
+;;
+
+(defclass jupiter-context ()
+  ((local-revision  :initarg  :local-revision
+		    :type     (integer 0)
+		    :initform 0
+		    :documentation
+		    "Revision number of the local data.")
+   (remote-revision :initarg  :remote-revision
+		    :type     (integer 0)
+		    :initform 0
+		    :documentation
+		    "Revision number of the remote data.")
+   (local-log       :initarg  :local-log
+		    :type     list
+		    :initform nil
+		    :documentation
+		    "List of local operations, that have not been
+acknowledged by the remote side."))
+  "Objects of this class store the state of one side of a
+concurrent modification activity, which is synchronized using the
+jupiter algorithm.")
+
+(defmethod jupiter-local-operation ((this jupiter-context) operation)
+  "Store OPERATION in the operation log of THIS and increase local revision count."
+  (with-slots (local-revision local-log) this
+    (push (cons local-revision operation) local-log)
+    (incf local-revision)))
+
+(defmethod jupiter-remote-operation ((this jupiter-context)
+				     local-revision remote-revision
+				     operation)
+  "Transform OPERATION with revisions LOCAL-REVISION and REMOTE-REVISION using the local operations stored in THIS.
+LOCAL-REVISION is the local revision of THIS context, the remote
+site is referring to."
+  (let ((transformed-operation operation))
+    (with-slots ((this-remote-revision :remote-revision)
+		 local-log) this
+
+      ;; Discard stored local operations which are older than the
+      ;; local revision to which the remote site refers.
+      (setq local-log (delete-if
+		       (lambda (revision) (< revision local-revision))
+		       local-log
+		       :key 'car))
+
+      ;; Transform the operation
+      (mapc
+       (lambda (log-operation)
+
+	 ;; Transform the remote operation using the stored operation.
+	 (setq transformed-operation
+	       (jupiter-transform (cdr log-operation)
+				  transformed-operation))
+
+	 ;; Transform the stored operation using the already
+	 ;; transformed remote operation.
+	 (setf (cdr log-operation)
+	       (jupiter-transform transformed-operation
+				  (cdr log-operation))))
+       (reverse local-log))
+
+      ;; Increase remote revision
+      (incf this-remote-revision))
+    ;; The transformed operation is the result of the computation.
+    transformed-operation)
+  )
+
+(defmethod object-print ((this jupiter-context) &rest strings)
+  "Add revisions and log length to string representation of THIS."
+  (with-slots (local-revision remote-revision local-log) this
+    (call-next-method
+     this
+     (format " local %d" local-revision)
+     (format " remote %d" remote-revision)
+     (format " log-items %d" (length local-log)))))
+
+(provide 'jupiter)
+;;; jupiter.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/Project.ede b/emacs.d/lisp/rudel/jupiter/Project.ede
new file mode 100644
index 0000000..275d1ed
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/Project.ede
@@ -0,0 +1,14 @@
+;; Object rudel/jupiter
+;; EDE project file.
+(ede-proj-project "rudel/jupiter"
+  :name "jupiter"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp "jupiter"
+    :name "jupiter"
+    :path ""
+    :source '("jupiter.el" "jupiter-operation.el" "jupiter-insert.el" "jupiter-delete.el" "jupiter-compound.el" "jupiter-nop.el")
+    :aux-packages '("rudel")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/jupiter/jupiter-compound.el b/emacs.d/lisp/rudel/jupiter/jupiter-compound.el
new file mode 100644
index 0000000..789bbc2
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/jupiter-compound.el
@@ -0,0 +1,89 @@
+;;; jupiter-compound.el --- Jupiter compound operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, compound
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-compound' implements a compound operation comprised
+;; of a number of child operations.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-compound
+;;
+
+(defclass jupiter-compound (jupiter-operation)
+  ((children :initarg  :children
+	     :type     list
+	     :initform nil
+	     :documentation
+	     ""))
+  "Objects of this class are operations, which are composed of a
+number of child operation.")
+
+;; TODO this has side effects. It can only be called once
+(defmethod rudel-apply ((this jupiter-compound) object)
+  "Apply THIS to BUFFER by applying the child operation."
+  (with-slots (children) this
+    (let ((child (first children))
+	  (rest  (rest  children)))
+      ;; Apply all child operations
+      (while child
+	(rudel-apply child object)
+	;; For each applied child operation, transform remaining
+	;; operation with the applied operation.
+	(dolist (next rest)
+	  (setf next (jupiter-transform child next)))
+	;; Advance to next child operation.
+	(setq child (first rest)
+	      rest  (rest rest)))))
+  )
+
+(defmethod jupiter-transform ((this jupiter-compound) other)
+  "Transform OTHER using the child operations of THIS."
+  (with-slots (children) this
+    (dolist (child children) ;; TODO reverse children?
+      (setq other (jupiter-transform child other)))
+    other))
+
+(defmethod object-print ((this jupiter-compound) &rest strings)
+  "Add number of children to string representation of THIS."
+  (with-slots (children) this
+    (call-next-method
+     this
+     (format " children %d" (length children)))))
+
+(provide 'jupiter-compound)
+;;; jupiter-compound.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/jupiter-delete.el b/emacs.d/lisp/rudel/jupiter/jupiter-delete.el
new file mode 100644
index 0000000..db2e985
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/jupiter-delete.el
@@ -0,0 +1,176 @@
+;;; jupiter-delete.el --- Jupiter delete operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, delete
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-delete' implements a delete operation for the
+;; Jupiter algorithm.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-operations)
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-delete
+;;
+
+(defclass jupiter-delete (jupiter-operation
+			  rudel-delete-op)
+  ()
+  "Objects of this class represent deletions in buffers.")
+
+(defmethod jupiter-transform ((this jupiter-delete) other)
+  "Transform other using THIS.
+OTHER is destructively modified or replaced."
+  (cond
+
+   ;;
+   ;; Transform an insert operation
+   ;;
+   ((jupiter-insert-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)) other
+	(cond
+	 ;;
+	 ;; <other>
+	 ;;         <this>
+	 ;;
+	 ((<= other-to this-from))
+
+	 ;;        <other>
+	 ;; <this>
+	 ((> other-from this-to)
+	  (decf other-from this-length))
+
+	 ;;   <other>
+	 ;; <  this  >
+	 ((and (> other-from this-from) (< other-to this-to))
+	  (setq other-from this-from))
+	 )))
+    )
+
+   ;;
+   ;; Transform a delete operation
+   ;;
+   ((jupiter-delete-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)) other
+	(cond
+
+	 ;;        <other>
+	 ;; <this>
+	 ;; OTHER deleted a region after the region deleted by
+	 ;; THIS. Therefore OTHER has to be shifted by the length of
+	 ;; the deleted region.
+	 ((> other-from this-to)
+	  (decf other-from this-length)
+	  (decf other-to   this-length))
+
+	 ;; <other>
+	 ;;         <this>
+	 ;; OTHER deleted a region before the region affected by
+	 ;; THIS. That is not affected by THIS operation.
+	 ((<= other-to this-from))
+
+	 ;; <  other  >
+	 ;;   <this>
+	 ((and (>= other-from this-from) (>= other-to this-to))
+	  (decf other-to this-length))
+
+	 ;; <other>
+	 ;;    <this>
+	 ((and (< other-from this-from) (< other-to this-to))
+	  (decf other-to (- other-to this-to)))
+
+	 ;;    <other>
+	 ;; <this>
+	 ;; The region deleted by OTHER overlaps with the region
+	 ;; deleted by THIS, such that a part of the region of this is
+	 ;; before the region of OTHER. The first part of the region
+	 ;; deleted by OTHER has already been deleted. Therefore, the
+	 ;; start of OTHER has to be shifted by the length of the
+	 ;; overlap.
+	 ((and (< other-from this-to) (> other-to this-to))
+	  (setq other-from this-from)
+	  (incf other-to   (+ other-from (- other-to this-to))))
+
+	 ;;   <other>
+	 ;; <  this   >
+	 ;; The region deleted by OTHER is completely contained in
+	 ;; the region affected by THIS. Therefore, OTHER must not
+	 ;; be executed.
+	 ((and (>= other-from this-from) (<= other-to this-to))
+	  (setq other (jupiter-nop "nop")))
+
+	 (t (error "logic error in (jupiter-transform (x jupiter-delete) (y jupiter-delete))"))
+	 ))))
+
+   ;;
+   ;; Transform a compound operation
+   ;;
+   ((jupiter-compound-p other) ;; TODO encapsulation violation
+    (with-slots (children) other
+      (dolist (child children)
+	(setf child (jupiter-transform this child)))))
+
+   ;;
+   ;; Transform a nop operation
+   ;;
+   ((jupiter-nop-p other))
+
+   ;; TODO this is for debugging
+   (t (error "Cannot transform operation of type `%s'"
+	     (object-class other))))
+  other)
+
+(defmethod object-print ((this jupiter-delete) &rest strings)
+  "Add from, to and length to string representation of THIS."
+  (with-slots (from to length) this
+    (call-next-method
+     this
+     (format " from %d" from)
+     (format " to %d" to)
+     (format " length %d" length)))
+  )
+
+(provide 'jupiter-delete)
+;;; jupiter-delete.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/jupiter-insert.el b/emacs.d/lisp/rudel/jupiter/jupiter-insert.el
new file mode 100644
index 0000000..339270e
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/jupiter-insert.el
@@ -0,0 +1,165 @@
+;;; jupiter-insert.el --- Jupiter insert operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, insert
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-insert' implements an insert operation for the
+;; Jupiter algorithm.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-operations)
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-insert
+;;
+
+(defclass jupiter-insert (jupiter-operation
+			  rudel-insert-op)
+  ()
+  "Objects of this class represent insertions into buffers.")
+
+(defmethod jupiter-transform ((this jupiter-insert) other)
+  "Transform OTHER using THIS."
+  (cond
+
+   ;;
+   ;; Transform an insert operation
+   ;;
+   ((jupiter-insert-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)
+		 (this-data   :data)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)
+		   (other-data   :data)) other
+	(cond
+	 ;;
+	 ;; <other>
+	 ;;         <this>
+	 ;; No need to do anything in this case.
+	 ;; ((< other-from this-from))
+
+	 ;;
+	 ;;        <other>
+	 ;; <this>
+	 ;;
+	 ((> other-from this-from)
+	  (incf other-from this-length))
+
+	 ;;
+	 ;; <other>
+	 ;; <this>
+	 ;; OTHER inserted at the same start position as we did. Since
+	 ;; the situation is symmetric in the location properties of
+	 ;; OTHER and THIS, we use the inserted data to construct an
+	 ;; ordering.
+	 ((= other-from this-from)
+	  (when (string< this-data other-data)
+	    (incf other-from this-length)))))))
+
+   ;;
+   ;; Transform a delete operation
+   ;;
+   ((jupiter-delete-p other)
+    (with-slots ((this-from   :from)
+		 (this-to     :to)
+		 (this-length :length)) this
+      (with-slots ((other-from   :from)
+		   (other-to     :to)
+		   (other-length :length)) other
+	(cond
+
+	 ;;
+	 ;; <other>
+	 ;;         <this>
+	 ;; just keep OTHER
+
+	 ;;
+	 ;; <other> and   <other> and        <other>
+	 ;; <this>      <this>        <this>
+	 ((>= other-from this-from)
+	  (incf other-from this-length)
+	  (incf other-to   this-length))
+
+	 ;;
+	 ;; <  other  >
+	 ;;   <this>
+	 ;; OTHER deleted a region that includes the point at which THIS
+	 ;; inserted in its interior. OTHER has to be split into one
+	 ;; deletion before and one delete after the inserted data.
+	 ((and (< other-from this-from) (> other-to this-to))
+	  (setq other
+		(jupiter-compound "compound"
+	         :children (list (jupiter-delete "delete-left"
+				  :from other-from
+				  :to   this-from)
+				 (jupiter-delete "delete-right"
+				  :from this-to
+				  :to   (+ other-to this-length))))))
+	 ))))
+
+   ;;
+   ;; Transform a compound operation
+   ;;
+   ((jupiter-compound-p other) ;; TODO encapsulation violation
+    (with-slots (children) other
+      (dolist (child children)
+	(setf child (jupiter-transform this child)))))
+
+   ;;
+   ;; Transform a nop operation
+   ;;
+   ((jupiter-nop-p other))
+
+   ;; TODO this is for debugging
+   (t (error "Cannot transform operation of type `%s'"
+	     (object-class other))))
+  other)
+
+(defmethod object-print ((this jupiter-insert) &rest strings)
+  "Add from, to, length and data to string representation of THIS."
+  (with-slots (from to length data) this
+    (call-next-method
+     this
+     (format " from %d" from)
+     (format " to %d" to)
+     (format " length %d" length)
+     (format " data \"%s\"" data)))
+  )
+
+(provide 'jupiter-insert)
+;;; jupiter-insert.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/jupiter-nop.el b/emacs.d/lisp/rudel/jupiter/jupiter-nop.el
new file mode 100644
index 0000000..e0f4a5c
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/jupiter-nop.el
@@ -0,0 +1,59 @@
+;;; jupiter-nop.el --- Jupiter no operation
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: jupiter, operation, nop
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Class `jupiter-nop' implements a no-operation for the Jupiter
+;; algorithm.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'jupiter-operation)
+
+
+;;; Class jupiter-nop
+;;
+
+(defclass jupiter-nop (jupiter-operation)
+  ()
+  "Operation, which does not change anything.")
+
+(defmethod rudel-apply ((this jupiter-nop) object)
+  "Applying THIS does not change OBJECT.")
+
+(defmethod jupiter-transform ((this jupiter-nop) other)
+  "Transforming OTHER with THIS simply returns OTHER."
+  other)
+
+(provide 'jupiter-nop)
+;;; jupiter-nop.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/jupiter-operation.el b/emacs.d/lisp/rudel/jupiter/jupiter-operation.el
new file mode 100644
index 0000000..bc91fee
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/jupiter-operation.el
@@ -0,0 +1,61 @@
+;;; jupiter-operation.el --- Operation base class for jupiter algorithm
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Jupiter, operation, base
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; The class jupiter-operation is a base class for Jupiter operation
+;; classes.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-operations)
+
+
+;;; Class jupiter-operation
+;;
+
+(defclass jupiter-operation (rudel-operation)
+  ()
+  "Objects of derived classes represent operations, which change documents.
+Objects can transform each other to produce sequences of
+operations, which produce identical changes than permutations of
+the same operations."
+  :abstract t)
+
+;; This one really could use multiple dispatch
+(defgeneric jupiter-transform ((this jupiter-operation) other)
+  "Transform OTHER such that the effect of applying it after THIS are equal to applying OTHER before THIS unmodified.
+In general, OTHER is destructively modified or replaced.")
+
+(provide 'jupiter-operation)
+;;; jupiter-operation.el ends here
diff --git a/emacs.d/lisp/rudel/jupiter/jupiter.el b/emacs.d/lisp/rudel/jupiter/jupiter.el
new file mode 100644
index 0000000..d285041
--- /dev/null
+++ b/emacs.d/lisp/rudel/jupiter/jupiter.el
@@ -0,0 +1,135 @@
+;;; jupiter.el --- An implementation of the Jupiter algorithm
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, jupiter, algorithm, distributed, integrity
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains an implementation of the jupiter algorithm,
+;; which ensures the synchronization of data shared between multiple
+;; peers despite differences in network latency.
+;;
+;; This implementation is partly based on the implementation used in
+;; the obby library <http://gobby.0x539.de/trac/>. Note, however, that
+;; the details of the implementations differ.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'jupiter-operation)
+(require 'jupiter-insert)
+(require 'jupiter-delete)
+(require 'jupiter-compound)
+(require 'jupiter-nop)
+
+
+;;; Class jupiter-context
+;;
+
+(defclass jupiter-context ()
+  ((local-revision  :initarg  :local-revision
+		    :type     (integer 0)
+		    :initform 0
+		    :documentation
+		    "Revision number of the local data.")
+   (remote-revision :initarg  :remote-revision
+		    :type     (integer 0)
+		    :initform 0
+		    :documentation
+		    "Revision number of the remote data.")
+   (local-log       :initarg  :local-log
+		    :type     list
+		    :initform nil
+		    :documentation
+		    "List of local operations, that have not been
+acknowledged by the remote side."))
+  "Objects of this class store the state of one side of a
+concurrent modification activity, which is synchronized using the
+jupiter algorithm.")
+
+(defmethod jupiter-local-operation ((this jupiter-context) operation)
+  "Store OPERATION in the operation log of THIS and increase local revision count."
+  (with-slots (local-revision local-log) this
+    (push (cons local-revision operation) local-log)
+    (incf local-revision)))
+
+(defmethod jupiter-remote-operation ((this jupiter-context)
+				     local-revision remote-revision
+				     operation)
+  "Transform OPERATION with revisions LOCAL-REVISION and REMOTE-REVISION using the local operations stored in THIS.
+LOCAL-REVISION is the local revision of THIS context, the remote
+site is referring to."
+  (let ((transformed-operation operation))
+    (with-slots ((this-remote-revision :remote-revision)
+		 local-log) this
+
+      ;; Discard stored local operations which are older than the
+      ;; local revision to which the remote site refers.
+      (setq local-log (delete-if
+		       (lambda (revision) (< revision local-revision))
+		       local-log
+		       :key 'car))
+
+      ;; Transform the operation
+      (mapc
+       (lambda (log-operation)
+
+	 ;; Transform the remote operation using the stored operation.
+	 (setq transformed-operation
+	       (jupiter-transform (cdr log-operation)
+				  transformed-operation))
+
+	 ;; Transform the stored operation using the already
+	 ;; transformed remote operation.
+	 (setf (cdr log-operation)
+	       (jupiter-transform transformed-operation
+				  (cdr log-operation))))
+       (reverse local-log))
+
+      ;; Increase remote revision
+      (incf this-remote-revision))
+    ;; The transformed operation is the result of the computation.
+    transformed-operation)
+  )
+
+(defmethod object-print ((this jupiter-context) &rest strings)
+  "Add revisions and log length to string representation of THIS."
+  (with-slots (local-revision remote-revision local-log) this
+    (call-next-method
+     this
+     (format " local %d" local-revision)
+     (format " remote %d" remote-revision)
+     (format " log-items %d" (length local-log)))))
+
+(provide 'jupiter)
+;;; jupiter.el ends here
diff --git a/emacs.d/lisp/rudel/obby/.svn/all-wcprops b/emacs.d/lisp/rudel/obby/.svn/all-wcprops
new file mode 100644
index 0000000..1794a33
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/all-wcprops
@@ -0,0 +1,53 @@
+K 25
+svn:wc:ra_dav:version-url
+V 38
+/svnroot/rudel/!svn/ver/468/trunk/obby
+END
+rudel-obby-client.el
+K 25
+svn:wc:ra_dav:version-url
+V 59
+/svnroot/rudel/!svn/ver/397/trunk/obby/rudel-obby-client.el
+END
+rudel-obby-state.el
+K 25
+svn:wc:ra_dav:version-url
+V 58
+/svnroot/rudel/!svn/ver/330/trunk/obby/rudel-obby-state.el
+END
+Project.ede
+K 25
+svn:wc:ra_dav:version-url
+V 50
+/svnroot/rudel/!svn/ver/215/trunk/obby/Project.ede
+END
+rudel-obby.el
+K 25
+svn:wc:ra_dav:version-url
+V 52
+/svnroot/rudel/!svn/ver/397/trunk/obby/rudel-obby.el
+END
+rudel-obby-debug.el
+K 25
+svn:wc:ra_dav:version-url
+V 58
+/svnroot/rudel/!svn/ver/318/trunk/obby/rudel-obby-debug.el
+END
+rudel-obby-server.el
+K 25
+svn:wc:ra_dav:version-url
+V 59
+/svnroot/rudel/!svn/ver/356/trunk/obby/rudel-obby-server.el
+END
+rudel-obby-errors.el
+K 25
+svn:wc:ra_dav:version-url
+V 59
+/svnroot/rudel/!svn/ver/319/trunk/obby/rudel-obby-errors.el
+END
+rudel-obby-util.el
+K 25
+svn:wc:ra_dav:version-url
+V 57
+/svnroot/rudel/!svn/ver/468/trunk/obby/rudel-obby-util.el
+END
diff --git a/emacs.d/lisp/rudel/obby/.svn/entries b/emacs.d/lisp/rudel/obby/.svn/entries
new file mode 100644
index 0000000..2d21fc4
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/entries
@@ -0,0 +1,300 @@
+10
+
+dir
+545
+https://rudel.svn.sourceforge.net/svnroot/rudel/trunk/obby
+https://rudel.svn.sourceforge.net/svnroot/rudel
+
+
+
+2009-10-16T01:48:03.160288Z
+468
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+694b31df-dcbb-44e8-af88-74c7ea918228
+
+rudel-obby-client.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+9cb0ae63b9f86199be36f208feb51b26
+2009-10-10T00:39:13.745463Z
+397
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+30971
+
+rudel-obby-state.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+f7a018739f96fe975da0ab4cc112e7e4
+2009-10-03T01:58:59.186010Z
+330
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+4955
+
+Project.ede
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+a99a4bf5a1243e8bd25e87d74b02db1d
+2009-10-03T00:45:44.545055Z
+215
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+388
+
+rudel-obby.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+af5ba069b2183fac68261ba2d34f199d
+2009-10-10T00:39:13.745463Z
+397
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+15453
+
+rudel-obby-debug.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+915461ef0b7ccb7dbad60a69aa973389
+2009-10-03T01:56:22.854481Z
+318
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+3300
+
+rudel-obby-server.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+cd9ab22e9a8d09b558693edfc7b5505a
+2009-10-03T02:08:53.322972Z
+356
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+24935
+
+rudel-obby-errors.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+72c6c1dfe7ec7b8a95d5808d439088dd
+2009-10-03T01:56:39.182216Z
+319
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+1839
+
+rudel-obby-util.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+991ece971eaeba3b86359fc05a410b9d
+2009-10-16T01:48:03.160288Z
+468
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+9523
+
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/Project.ede.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/Project.ede.svn-base
new file mode 100644
index 0000000..53d2422
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/Project.ede.svn-base
@@ -0,0 +1,14 @@
+;; Object rudel/obby
+;; EDE project file.
+(ede-proj-project "rudel/obby"
+  :name "obby"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp "obby"
+    :name "obby"
+    :path ""
+    :source '("rudel-obby.el" "rudel-obby-util.el" "rudel-obby-client.el" "rudel-obby-server.el" "rudel-obby-errors.el" "rudel-obby-state.el")
+    :aux-packages '("rudel" "jupiter")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-client.el.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-client.el.svn-base
new file mode 100644
index 0000000..5c192db
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-client.el.svn-base
@@ -0,0 +1,973 @@
+;;; rudel-obby-client.el --- Client functions of the Rudel obby backend
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, client
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the client part of the obby backend.
+
+
+;;; History:
+;;
+;; 0.2 - State machine.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'jupiter)
+
+(require 'rudel-state-machine)
+(require 'rudel-operations)
+(require 'rudel-chat)
+
+(require 'rudel-obby-errors)
+(require 'rudel-obby-util)
+(require 'rudel-obby-state)
+
+
+;;; Class rudel-obby-client-state-new
+;;
+
+(defclass rudel-obby-client-state-new
+  (rudel-obby-client-connection-state)
+  ()
+  "Start state of newly established connections.")
+
+(defmethod rudel-obby/obby_welcome
+  ((this rudel-obby-client-state-new) version)
+  "Handle obby 'welcome' message."
+  ;; Examine announced protocol version.
+  (with-parsed-arguments ((version number))
+    (message "Received Obby welcome message (version %d)" version))
+  ;; Start encryption handshake
+  'encryption-negotiate)
+
+
+;;; Class rudel-obby-client-state-encryption-negotiate
+;;
+
+(defclass rudel-obby-client-state-encryption-negotiate
+  (rudel-obby-client-connection-state)
+  ()
+  "Start state of the encryption handshake.")
+
+(defmethod rudel-obby/net6_encryption
+  ((this rudel-obby-client-state-encryption-negotiate) value)
+  "Handle net6 'encryption' message."
+  (rudel-send this "net6_encryption_ok")
+  'encryption-start)
+
+
+;;; Class rudel-obby-client-connection-encryption-start
+;;
+
+(defclass rudel-obby-client-state-encryption-start
+  (rudel-obby-client-connection-state)
+  ()
+  "Second state of the encryption handshake.")
+
+(defmethod rudel-obby/net6_encryption_begin
+  ((this rudel-obby-client-state-encryption-start))
+  "Handle net6 'encryption_begin' message."
+  ;; Start TLS encryption for the connection.
+  (with-slots (connection) this
+    (with-slots (socket) connection
+      (when (rudel-process-object socket :supports-tls)
+	(rudel-tls-start-tls socket)
+	(sit-for 1))))
+
+  ;; The connection is now established
+  'joining)
+
+(defmethod rudel-obby/net6_encryption_failed
+  ((this rudel-obby-client-state-encryption-start))
+  "Handle net6 'encryption_failed' message."
+  ;; The connection is now established; without encryption though
+  'joining)
+
+
+;;; Class rudel-obby-client-state-joining
+;;
+
+(defclass rudel-obby-client-state-joining
+  (rudel-obby-client-connection-state)
+  ()
+  "First state after the connection has been properly set up.")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-joining))
+  "When entering this state, send a login request."
+  ;; Send login request with username and color. This can easily fail
+  ;; (resulting in response 'net6_login_failed') if the username or
+  ;; color is already taken.
+  (with-slots (info) (oref this connection)
+    (let ((username        (plist-get info :username))
+	  (color           (plist-get info :color))
+	  (global-password (plist-get info :global-password))
+	  (user-password   (plist-get info :user-password)))
+      (apply #'rudel-send
+	     this
+	     "net6_client_login"
+	     username (rudel-obby-format-color color)
+	     (append (when global-password
+		       (list global-password))
+		     (when (and global-password user-password)
+		       (list user-password))))))
+  nil)
+
+(defmethod rudel-obby/obby_sync_init
+  ((this rudel-obby-client-state-joining) count)
+  "Handle obby 'sync_init' message."
+  ;; Switch to 'synching' state, passing the number of synchronization
+  ;; items.
+  (with-parsed-arguments ((count number))
+    (list 'session-synching count)))
+
+(defmethod rudel-obby/net6_login_failed
+  ((this rudel-obby-client-state-joining) reason)
+  "Handle net6 'login_failed' message."
+  (with-parsed-arguments ((reason number))
+    (with-slots (connection) this
+      (let ((error-data
+	     (cond
+	      ;; Invalid username
+	      ((= reason rudel-obby-error-username-invalid)
+	       (cons 'rudel-obby-username-invalid nil))
+	      ;; Username in use
+	      ((= reason rudel-obby-error-username-in-use)
+	       (cons 'rudel-obby-username-in-use nil))
+	      ;; Color in use
+	      ((= reason rudel-obby-error-color-in-use)
+	       (cons 'rudel-obby-color-in-use nil))
+	      ;; Wrong global password
+	      ((= reason rudel-obby-error-wrong-global-password)
+	       (cons 'rudel-obby-wrong-global-password nil))
+	      ;; Wrong user password
+	      ((= reason rudel-obby-error-wrong-user-password)
+	       (cons 'rudel-obby-wrong-user-password nil))
+	      ;; Otherwise, signal a generic join error
+	      (t (cons 'rudel-join-error nil)))))
+
+	;; Switch to 'join-failed' state, pass the error data.
+	(list 'join-failed error-data))))
+  )
+
+
+;;; Class rudel-obby-client-state-join-failed
+;;
+
+(defclass rudel-obby-client-state-join-failed
+  (rudel-obby-client-connection-state)
+  ((error-symbol :initarg :error-symbol
+		 :type    symbol
+		 :documentation
+		 "Error symbol describing the reason for the
+login failure.")
+   (error-data   :initarg :error-data
+		 :type    list
+		 :documentation
+		 "Additional error data describing the login
+failure."))
+  "State for failed login attempts.")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-join-failed)
+			error)
+  "When the state is entered, store the error data passed in ERROR."
+  (with-slots (error-symbol error-data) this
+    (setq error-symbol (car error)
+	  error-data   (cdr error)))
+  nil)
+
+
+;;; Class rudel-obby-client-state idle
+;;
+
+(defclass rudel-obby-client-state-idle
+  (rudel-obby-client-connection-state
+   rudel-obby-document-handler)
+  ()
+  "Default state of the connection.")
+
+(defmethod rudel-obby/net6_client_join
+  ((this rudel-obby-client-state-idle)
+   client-id name encryption user-id color)
+  "Handle net6 'client_join' message."
+  (with-parsed-arguments ((client-id number)
+			  (user-id   number)
+			  (color     color))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'eq #'rudel-id)))
+	  (if user
+	      ;; If we have such a user object, update its state.
+	      (with-slots ((client-id1  client-id)
+			   (color1      color)
+			   connected
+			   (encryption1 encryption)) user
+		(setq client-id1  client-id
+		      color1      color
+		      connected   t
+		      encryption1 (string= encryption "1"))
+
+		;; Run the change hook of the user object.
+		(object-run-hook-with-args user 'change-hook))
+	    ;; Otherwise, create a new user object.
+	    (let ((user (rudel-obby-user
+			 name
+			 :client-id  client-id
+			 :user-id    user-id
+			 :connected  t
+			 :encryption (string= encryption "1")
+			 :color      color)))
+	      (rudel-add-user session user))))))
+    (message "Client joined: %s %s" name color))
+  nil)
+
+(defmethod rudel-obby/net6_client_part
+  ((this rudel-obby-client-state-idle) client-id)
+  "Handle net6 'client_part' message."
+  ;; Find the user object, associated to the client id. Remove the
+  ;; client id and change the user's state to disconnected.
+  (with-parsed-arguments ((client-id number))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session client-id
+				     #'eql #'rudel-client-id)))
+	  (if user
+	      (with-slots (client-id connected) user
+		;; Set slot values.
+		(setq client-id nil
+		      connected nil)
+
+		;; Run the change hook of the user object.
+		(object-run-hook-with-args user 'change-hook))
+	    (display-warning
+	     '(rudel obby)
+	     (format "Cannot find user for client id: %d"
+		     client-id)
+	     :warning))))))
+  nil)
+
+(defmethod rudel-obby/obby_user_colour
+  ((this rudel-obby-client-state-idle) user-id color)
+  "Handle obby 'user_colour' message."
+  (with-parsed-arguments ((user-id number)
+			  (color   color))
+    ;; Find user object and set color.
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+	  (with-slots ((name :object-name) (color1 :color)) user
+	    ;; Set color in user object.
+	    (setq color1 color)
+
+	    ;; Run the change hook of the user object.
+	    (object-run-hook-with-args user 'change-hook)
+
+	    ;; Update overlays.
+	    (rudel-overlay-set-face-attributes
+	     (rudel-overlay-make-face-symbol 'author name)
+	     color1))))))
+  nil)
+
+(defmethod rudel-obby/obby_document_create
+  ((this rudel-obby-client-state-idle)
+   owner-id doc-id name suffix encoding)
+  "Handle obby 'document_create' message."
+  (with-parsed-arguments ((owner-id number)
+			  (doc-id   number)
+			  (suffix   number)
+			  (encoding coding-system))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((owner (rudel-find-user session owner-id
+				      #'= #'rudel-id)))
+	  (rudel-add-document session (rudel-obby-document
+				       name
+				       :subscribed (list owner)
+				       :id         doc-id
+				       :owner-id   owner-id
+				       :suffix     suffix))))
+      (message "New document: %s" name)))
+  nil)
+
+(defmethod rudel-obby/obby_document_remove
+  ((this rudel-obby-client-state-idle) doc-id)
+  "Handle obby 'document_remove' message."
+  (with-parsed-arguments ((doc-id document-id))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((document (rudel-find-document
+			 session doc-id
+			 #'equal #'rudel-both-ids)))
+	  (if document
+	      (progn
+		(rudel-remove-document session document)
+		(with-slots ((name :object-name)) document
+		  (message "Document removed: %s" name)))
+	    (display-warning
+	     '(rudel obby)
+	     (format "Document not found: %s" doc-id)
+	     :warning))))))
+  nil)
+
+(defmethod rudel-obby/obby_document/rename
+  ((this rudel-obby-client-state-idle)
+   document user new-name new-suffix)
+  "Handle obby 'rename' submessage of the 'obby_document' message."
+  (with-parsed-arguments ((new-suffix number))
+    (with-slots ((name :object-name) suffix) document
+      (setq name   new-name
+	    suffix new-suffix)))
+  nil)
+
+(defmethod rudel-obby/obby_document/subscribe
+  ((this rudel-obby-client-state-idle)
+   document user-id)
+  "Handle 'subscribe' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id number))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+	  (rudel-add-user document user)))))
+  nil)
+
+(defmethod rudel-obby/obby_document/unsubscribe
+  ((this rudel-obby-client-state-idle)
+   document user-id)
+  "Handle 'unsubscribe' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id number))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+	  (rudel-remove-user document user)))))
+  nil)
+
+(defmethod rudel-obby/obby_document/record
+  ((this rudel-obby-client-state-idle)
+   document user-id local-revision remote-revision
+   action &rest arguments)
+  "Handle 'record' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id         number)
+			  (local-revision  number)
+			  (remote-revision number))
+    ;; Locate the user.
+    (let ((user (with-slots (connection) this
+		  (with-slots (session) connection
+		    (rudel-find-user session user-id
+				     #'= #'rudel-id)))))
+      (if user
+	  (condition-case error
+	      ;; Try to dispatch
+	      (rudel-dispatch
+	       this "rudel-obby/obby_document/record/" action
+	       (append (list document user local-revision remote-revision)
+		       arguments))
+	    ;; Warn if we failed to locate or execute the
+	    ;; method. Return nil in this case, so we remain in the
+	    ;; current state.
+	    (rudel-dispatch-error
+	     (progn
+	       (display-warning
+		'(rudel obby)
+		(format "%s: no method (%s: %s): `%s:%s'; arguments: %s"
+			(object-print this) (car error) (cdr error)
+			"rudel-obby/obby_document/record/" action arguments)
+		:debug)
+		nil)))
+	;; If we did not find the user, warn.
+	(progn
+	  (display-warning
+	   '(rudel obby)
+	   (format "User not found: %d" user-id)
+	   :warning)
+	  nil))))
+  )
+
+(defmethod rudel-obby/obby_document/record/ins
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision
+   position data)
+  "Handle 'ins' submessage of 'record' submessage of obby 'document' message."
+  (with-parsed-arguments ((position number))
+    (let ((operation (jupiter-insert
+		      (format "insert-%d-%d"
+			      remote-revision local-revision)
+		      :from position
+		      :data data)))
+      (with-slots (connection) this
+	(rudel-remote-operation connection
+				document user
+				remote-revision local-revision
+				operation))))
+  nil)
+
+(defmethod rudel-obby/obby_document/record/del
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision
+   position length)
+  "Handle 'del' submessage of 'record' submessage of obby 'document' message."
+  (with-parsed-arguments ((position number)
+			  (length   number))
+    (let ((operation (jupiter-delete
+		      (format "delete-%d-%d"
+			      remote-revision local-revision)
+		      :from position
+		      :to   (+ position length))))
+      (with-slots (connection) this
+	(rudel-remote-operation connection
+				document user
+				remote-revision local-revision
+				operation))))
+  nil)
+
+(defmethod rudel-obby/obby_document/record/split
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision
+   &rest operations)
+  "Handle 'split' submessage of 'record' submessage of obby 'document' message."
+  (let ((operation (rudel-message->operation
+		    (cons "split" operations)
+		    local-revision remote-revision)))
+    (with-slots (connection) this
+      (rudel-remote-operation connection
+			      document user
+			      remote-revision local-revision
+			      operation)))
+  nil)
+
+(defmethod rudel-obby/obby_document/record/noop
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision)
+  "Handle 'noop' submessage of 'record' submessage of obby 'document' message."
+  (let ((operation (jupiter-nop
+		    (format "nop-%d-%d"
+			    remote-revision local-revision))))
+    (with-slots (connection) this
+      (rudel-remote-operation connection
+			      document user
+			      remote-revision local-revision
+			      operation)))
+  nil)
+
+(defmethod rudel-obby/obby_message ((this rudel-obby-client-state-idle)
+				    sender text)
+  "Handle obby 'message' message"
+  (with-parsed-arguments ((sender number))
+    (with-slots (session) (oref this :connection)
+      (let ((sender (rudel-find-user session sender #'eq #'rudel-id)))
+	(rudel-chat-dispatch-message sender text))))
+  nil)
+
+
+;;; Class rudel-obby-client-state-session-synching
+;;
+
+(defclass rudel-obby-client-state-session-synching
+  (rudel-obby-client-connection-state)
+  ((all-items       :initarg  :all-items
+		    :type     (integer 0)
+		    :documentation
+		    "Total number of synchronization items expected
+		    to receive from the server.")
+   (remaining-items :initarg  :remaining-items
+		    :type     (integer 0)
+		    :documentation
+		    "Number of synchronization items not yet
+		    received from the server.")
+   (have-self       :initarg  :have-self
+		    :type     boolean
+		    :documentation
+		    "Flag that remembers, whether the session has
+		    a 'self' user object."))
+  "State used for synching session data.")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-session-synching)
+			num-items)
+  "When entering state, store number of expected items."
+  (with-slots (all-items remaining-items have-self) this
+    (setq all-items       num-items
+	  remaining-items num-items
+	  have-self       nil))
+  nil)
+
+(defmethod rudel-obby/net6_client_join
+  ((this rudel-obby-client-state-session-synching)
+   client-id name encryption user-id color)
+  "Handle net6 'client_join' message."
+  (with-parsed-arguments ((client-id number)
+			  (user-id   number)
+			  (color     color))
+    (with-slots (connection remaining-items have-self) this
+      (with-slots (session) connection
+	;; Construct user object and add it to the session.
+	(let ((user (rudel-obby-user
+		     name
+		     :client-id  client-id
+		     :user-id    user-id
+		     :connected  t
+		     :encryption (string= encryption "1")
+		     :color      color)))
+	  (rudel-add-user session user)
+
+	  ;; The first user object describes the user of this client.
+	  (unless have-self
+	    (with-slots (self) session
+	      (setq self      user
+		    have-self t)))))
+
+      ;; Decrease number of not yet received synchronization items.
+      (decf remaining-items)))
+  nil)
+
+(defmethod rudel-obby/obby_sync_usertable_user
+  ((this rudel-obby-client-state-session-synching) user-id name color)
+  "Handle obby 'sync_usertable_user' message."
+  (with-parsed-arguments ((user-id number)
+			  (color   color))
+    (with-slots (connection remaining-items) this
+      (with-slots (session) connection
+	(rudel-add-user session (rudel-obby-user
+				 name
+				 :user-id    user-id
+				 :connected  nil
+				 :color      color)))
+
+      ;; Decrease number of not yet received synchronization items.
+      (decf remaining-items)))
+  nil)
+
+(defmethod rudel-obby/obby_sync_doclist_document
+  ((this rudel-obby-client-state-session-synching)
+   owner-id doc-id name suffix encoding &rest subscribed-user-ids)
+  "Handle obby 'sync_doclist_document' message."
+  (with-parsed-arguments ((doc-id   number)
+			  (owner-id number)
+			  (suffix   number)
+			  (encoding coding-system))
+    (with-slots (connection remaining-items) this
+      (with-slots (session) connection
+	;; Retrieve the subscribed users
+	(let ((subscribed-users
+	       (mapcar
+		(lambda (user-id)
+		  (with-parsed-arguments ((user-id number))
+		    (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+		subscribed-user-ids)))
+
+	  ;; Make a new document with the list of subscribed users.
+	  (rudel-add-document session (rudel-obby-document
+				       name
+				       :subscribed subscribed-users
+				       :id         doc-id
+				       :owner-id   owner-id
+				       :suffix     suffix))))
+
+      ;; Decrease number of not yet received synchronization items.
+      (decf remaining-items)))
+  nil)
+
+(defmethod rudel-obby/obby_sync_final
+  ((this rudel-obby-client-state-session-synching))
+  "Handle obby 'sync_final' message."
+  'idle)
+
+(defmethod object-print ((this rudel-obby-client-state-session-synching)
+			 &rest strings)
+  "Append number of remaining items to string representation."
+  (with-slots (remaining-items) this
+    (call-next-method this (format " remaining: %d" remaining-items))))
+
+
+;;; Class rudel-obby-client-state-subscribing
+;;
+
+(defclass rudel-obby-client-state-subscribing
+  (rudel-obby-client-connection-state
+   rudel-obby-document-handler)
+  ((document :initarg :document
+	     :type    rudel-obby-document-child
+	     :documentation
+	     ""))
+  "")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-subscribing)
+			user document)
+  "When entering this state, send a subscription request to the server."
+  (with-slots ((document1 :document)) this
+    (setq document1 document)
+
+    (with-slots ((doc-id :id) owner-id) document1
+      (with-slots (user-id) user
+	(rudel-send this "obby_document"
+		    (format "%x %x" owner-id doc-id)
+		    "subscribe"
+		    (format "%x" user-id)))))
+  nil)
+
+(defmethod rudel-obby/obby_document/sync_init
+  ((this rudel-obby-client-state-subscribing)
+   document num-bytes)
+  "Handle obby 'sync_init' message."
+  (with-parsed-arguments ((num-bytes number))
+    (with-slots (documents) this
+      (if (= num-bytes 0)
+	  'idle
+	(list 'document-synching document num-bytes))))
+  )
+
+
+;;; Class rudel-obby-client-state-document-synching
+;;
+
+(defclass rudel-obby-client-state-document-synching
+  (rudel-obby-client-connection-state
+   rudel-obby-document-handler)
+  ((document        :initarg  :document
+		    :type     rudel-obby-document-child
+		    :documentation
+		    "")
+   (all-bytes       :initarg  :all-bytes
+		    :type     (integer 0)
+		    :documentation
+		    "")
+   (remaining-bytes :initarg  :remaining-bytes
+		    :type     (integer 0)
+		    :documentation
+		    ""))
+  "")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-document-synching)
+			document num-bytes)
+  ""
+  (with-slots ((document1 :document) all-bytes remaining-bytes) this
+    (setq document1       document
+	  all-bytes       num-bytes
+	  remaining-bytes num-bytes))
+  nil)
+
+(defmethod rudel-obby/obby_document/sync_chunk
+  ((this rudel-obby-client-state-document-synching)
+   document data user-id)
+  "Handle obby 'sync_chunk' message."
+  (with-parsed-arguments ((user-id number))
+    (with-slots (connection remaining-bytes) this
+      (with-slots (session) connection
+	(let* ((user      (unless (zerop user-id)
+			    (rudel-find-user session user-id
+					     #'= #'rudel-id)))
+	       (operation (rudel-insert-op "bulk-insert"
+					   :from nil
+					   :data data)))
+	  (rudel-remote-operation document user operation)))
+
+      ;; After all bytes are transferred, go back to idle state.
+      (decf remaining-bytes (string-bytes data))
+      (if (= remaining-bytes 0)
+	  'idle
+	nil)))
+  )
+
+(defmethod object-print ((this rudel-obby-client-state-document-synching)
+			 &rest strings)
+  "Append number of remaining items to string representation."
+  (with-slots (remaining-bytes) this
+    (call-next-method this (format " remaining: %d" remaining-bytes))))
+
+
+;;; Class rudel-obby-client-state-they-finalized
+;;
+
+(defclass rudel-obby-client-state-they-finalized
+  (rudel-obby-client-connection-state)
+  ()
+  "State used to indicate that the connection was closed by the peer.")
+
+
+;;; Client connection states.
+;;
+
+(defvar rudel-obby-client-connection-states
+  '((new                  . rudel-obby-client-state-new)
+    (encryption-negotiate . rudel-obby-client-state-encryption-negotiate)
+    (encryption-start     . rudel-obby-client-state-encryption-start)
+    (joining              . rudel-obby-client-state-joining)
+    (join-failed          . rudel-obby-client-state-join-failed)
+    (idle                 . rudel-obby-client-state-idle)
+    (session-synching     . rudel-obby-client-state-session-synching)
+    (subscribing          . rudel-obby-client-state-subscribing)
+    (document-synching    . rudel-obby-client-state-document-synching)
+    (they-finalized       . rudel-obby-client-state-they-finalized))
+  "Name symbols and classes of connection states.")
+
+
+;;; Class rudel-obby-connection
+;;
+
+(defclass rudel-obby-connection (rudel-obby-socket-owner
+				 rudel-connection
+				 rudel-state-machine)
+  ((info     :initarg :info
+	     :type    list
+	     :documentation
+	     "Stores connection information for later use.")
+   (contexts :initarg :contexts
+	     :type    hash-table
+	     :documentation
+	     "Contains jupiter context objects for all
+documents."))
+  "Class rudel-obby-connection ")
+
+(defmethod initialize-instance ((this rudel-obby-connection) &rest slots)
+  ;; Initialize slots of THIS
+  (when (next-method-p)
+    (call-next-method))
+
+  ;; Create a new hash-table object to hold jupiter contexts
+  ;; associated to documents.
+  (with-slots (contexts) this
+    (setq contexts (make-hash-table :test #'equal)))
+
+  ;; Register states.
+  (rudel-register-states this rudel-obby-client-connection-states)
+  )
+
+(defmethod rudel-register-state ((this rudel-obby-connection)
+				 symbol state)
+  "Register SYMBOL and STATE and set connection slot of STATE."
+  ;; Associate THIS connection to STATE.
+  (oset state :connection this)
+
+  ;; Register STATE.
+  (when (next-method-p)
+    (call-next-method))
+  )
+
+(defmethod rudel-disconnect ((this rudel-obby-connection))
+  ""
+  (when (next-method-p)
+    (call-next-method)))
+
+(defmethod rudel-close ((this rudel-obby-connection))
+  ""
+  ;; Move the state machine into an error state.
+  (rudel-switch this 'they-finalized)
+
+  ;; Terminate the session.
+  (with-slots (session) this
+    (rudel-end session)))
+
+(defmethod rudel-find-context ((this rudel-obby-connection) document)
+  "Return the jupiter context associated to DOCUMENT in THIS connection."
+  (with-slots (contexts) this
+    (gethash (oref document :id) contexts)))
+
+(defmethod rudel-add-context ((this rudel-obby-connection) document)
+  "Add a jupiter context for DOCUMENT to THIS connection."
+  (with-slots (contexts) this
+    (with-slots ((doc-name :object-name) (doc-id :id)) document
+      (puthash doc-id
+	       (jupiter-context (format "%s" doc-name))
+	       contexts)))
+  )
+
+(defmethod rudel-remove-context ((this rudel-obby-connection) document)
+  "Remove the jupiter context associated to DOCUMENT from THIS connection."
+  (with-slots (contexts) this
+    (remhash (oref document :id) contexts)))
+
+(defmethod rudel-message ((this rudel-obby-connection) message)
+  "Dispatch MESSAGE to the current state of THIS object.
+If the state has no suitable method, generate a warning, but do
+nothing else."
+  ;; Dispatch message to state.
+  (rudel-accept this message))
+
+(defmethod rudel-change-color- ((this rudel-obby-connection) color)
+  ""
+  (rudel-send this "obby_user_colour"
+	      (rudel-obby-format-color color)))
+
+(defmethod rudel-publish ((this rudel-obby-connection) document)
+  ""
+  ;; Create a new jupiter context for DOCUMENT.
+  (rudel-add-context this document)
+
+  ;; Announce the new document to the server.
+  (with-slots ((name :object-name) id buffer) document
+    (rudel-send this "obby_document_create"
+		(format "%x" id)
+		name
+		"UTF-8"
+		(with-current-buffer buffer
+		  (buffer-string))))
+  )
+
+(defmethod rudel-unpublish ((this rudel-obby-connection) document)
+  "Remove DOCUMENT from the obby session THIS is connected to."
+  ;; Request removal of DOCUMENT.
+  (with-slots ((doc-id :id) owner-id) document
+      (rudel-send this "obby_document_remove"
+		  (format "%x %x" owner-id doc-id)))
+
+  ;; Remove the jupiter context for DOCUMENT.
+  (rudel-remove-context this document)
+  )
+
+(defmethod rudel-subscribe-to ((this rudel-obby-connection) document)
+  ""
+  ;; Create a new jupiter context for DOCUMENT.
+  (rudel-add-context this document)
+
+  ;; Switch to subscribing state and wait until the state goes back to
+  ;; idle.
+  (with-slots (session) this
+    (with-slots (self) session
+      (rudel-switch this 'subscribing self document)))
+
+  (lexical-let ((reporter (make-progress-reporter "Subscribing " 0.0 1.0)))
+    (flet ((display-progress (state)
+	     (cond
+	      ;; Syncing document content, we can provide detailed progress.
+	      ((and (consp state)
+		    (eq (car state) 'document-synching))
+	       (with-slots (all-bytes remaining-bytes) (cdr state)
+		 (progress-reporter-force-update
+		  reporter
+		  (- 1.0 (/ (float remaining-bytes) (float all-bytes)))
+		  (format "Subscribing (%s) " (car state)))))
+
+	      ;; For other states, we just spin.
+	      ((consp state)
+	       (progress-reporter-force-update
+	        reporter 0.5
+	        (format "Subscribing (%s) " (car state))))
+
+	      ;; Done
+	      (t
+	       (progress-reporter-force-update reporter 1.0 "Subscribing ")
+	       (progress-reporter-done reporter)))))
+      (rudel-state-wait this '(idle) '(they-finalized) #'display-progress)))
+
+  ;; We receive a notification of our own subscription from the
+  ;; server. Consequently we do not add SELF to the list of subscribed
+  ;; users of DOCUMENT.
+  )
+
+(defmethod rudel-unsubscribe-from ((this rudel-obby-connection) document)
+  ""
+  ;; Delete the jupiter context for DOCUMENT.
+  (rudel-remove-context this document)
+
+  ;; Announce the end of our subscription to the server.
+  (with-slots (session) this
+    (with-slots (user-id) (oref session :self)
+      (with-slots ((doc-id :id) owner-id) document
+	(rudel-send this "obby_document"
+		    (format "%x %x" owner-id doc-id)
+		    "unsubscribe"
+		    (format "%x" user-id)))))
+
+  ;; We receive a notification of the end of our own subscription from
+  ;; the server. Consequently we do not remove SELF from the list of
+  ;; subscribed users of DOCUMENT.
+  )
+
+(defmethod rudel-local-insert ((this rudel-obby-connection)
+			       document position data)
+  ""
+  (rudel-local-operation
+   this
+   document
+   (jupiter-insert "insert" :from position :data data)))
+
+(defmethod rudel-local-delete ((this rudel-obby-connection)
+			       document position length)
+  ""
+  (rudel-local-operation
+   this
+   document
+   (jupiter-delete "delete" :from position :to (+ position length))))
+
+(defmethod rudel-local-operation ((this rudel-obby-connection)
+				  document operation)
+  "Handle OPERATION performed on DOCUMENT by sending a message through THIS connection."
+  ;; Convert character positions in OPERATION to byte positions, since
+  ;; the obby protocol works with byte positions, but Emacs uses
+  ;; character positions.
+  (with-slots (buffer) document
+    (rudel-obby-char->byte operation buffer))
+
+  ;; Find jupiter context for DOCUMENT.
+  (let ((context (rudel-find-context this document)))
+
+    ;; Notify the server of the operation.
+    (with-slots (owner-id (doc-id :id)) document
+      (with-slots (local-revision remote-revision) context
+	(apply #'rudel-send
+	       this
+	       "obby_document"
+	       (format "%x %x" owner-id doc-id)
+	       "record"
+	       (format "%x" local-revision)
+	       (format "%x" remote-revision)
+	       (rudel-operation->message operation))))
+
+      ;; Submit the operation to the jupiter context.
+      (jupiter-local-operation context operation))
+  )
+
+(defmethod rudel-remote-operation ((this rudel-obby-connection)
+				   document user
+				   remote-revision local-revision
+				   operation)
+  "Handle OPERATION received through THIS connection performed by USER on DOCUMENT."
+  (let* (;; Find jupiter context for DOCUMENT.
+	 (context     (rudel-find-context this document))
+	 ;; And transform the operation.
+	 (transformed (jupiter-remote-operation
+		       context
+		       remote-revision local-revision
+		       operation)))
+
+    ;; Convert byte positions in OPERATION to character positions,
+    ;; since the obby protocol works with byte positions, but Emacs
+    ;; uses character positions.
+    (with-slots (buffer) document
+      (rudel-obby-byte->char transformed buffer))  ;; TODO operation's responsibility?
+
+    ;; Apply the transformed operation to the document.
+    (rudel-remote-operation document user transformed))
+  )
+
+(provide 'rudel-obby-client)
+;;; rudel-obby-client.el ends here
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-debug.el.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-debug.el.svn-base
new file mode 100644
index 0000000..8f5f168
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-debug.el.svn-base
@@ -0,0 +1,122 @@
+;;; rudel-obby-debug.el --- Debugging functions for obby backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, debugging
+;; X-RCS: $Id:$
+;;
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Debugging functions for the obby backend.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-debug)
+
+(require 'rudel-obby-util)
+
+
+;;; Variables
+;;
+
+(defvar rudel-obby-debug-old-state nil
+  "Saves state of state machines across one function call.")
+
+
+;;; Functions
+;;
+
+(defmethod rudel-send :before ((this rudel-obby-socket-owner)
+			       name &rest arguments)
+  "Print NAME and ARGUMENTS to debug stream."
+  (let ((message (apply #'rudel-obby-assemble-message
+			name arguments)))
+
+    (with-slots (socket) this
+      (rudel-debug-stream-insert
+       (rudel-debug-stream-name socket)
+       :sent
+       (concat  (substring message 0 (min (length message) 100))
+		(when (> (length message) 100)
+		  "..."))
+       (append (list name) arguments))))
+    )
+
+(defmethod rudel-receive :before ((this rudel-obby-socket-owner) data)
+  "Print DATA to debug stream."
+  (with-slots (socket) this
+    (rudel-debug-stream-insert
+     (rudel-debug-stream-name socket)
+     :received
+     (concat (substring data 0 (min (length data) 100))
+	     (when (> (length data) 100)
+	       "..."))))
+  )
+
+(defmethod rudel-message :before ((this rudel-obby-socket-owner)
+				  message)
+  "Print DATA to debug stream."
+  (let ((data (apply #'rudel-obby-assemble-message message)))
+
+    (with-slots (socket) this
+      (rudel-debug-stream-insert
+       (rudel-debug-stream-name socket)
+       :received-processed
+       (concat (substring data 0 (min (length data) 100))
+	       (when (> (length data) 100)
+		 "..."))
+       message)
+      ))
+  )
+
+(defmethod rudel-switch :before ((this rudel-obby-socket-owner)
+				 state &rest arguments)
+  "Store name of STATE for later printing."
+  (with-slots (state) this
+    (setq rudel-obby-debug-old-state
+	  (if state
+	      (object-name-string state)
+	    "#start")))
+  )
+
+(defmethod rudel-switch :after ((this rudel-obby-socket-owner)
+				state &rest arguments)
+  "Print STATE and ARGUMENTS to debug stream."
+  (with-slots (socket state) this
+    (let ((old-state rudel-obby-debug-old-state)
+	  (new-state (object-name-string state)))
+      (unless (string= old-state new-state)
+	(rudel-debug-stream-insert
+	 (rudel-debug-stream-name socket)
+	 :special
+	 (if arguments
+	     (format "%s -> %s %s" old-state new-state arguments)
+	   (format "%s -> %s" old-state new-state))))))
+  )
+
+(provide 'rudel-obby-debug)
+;;; rudel-obby-debug.el ends here
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-errors.el.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-errors.el.svn-base
new file mode 100644
index 0000000..689d4a8
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-errors.el.svn-base
@@ -0,0 +1,65 @@
+;;; rudel-obby-errors.el --- Error data used in the obby Rudel backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, errors
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains definitions of error conditions and numeric
+;; error codes used in the Rudel obby backend.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+
+;;; Obby protocol error codes
+;;
+
+(defconst rudel-obby-error-username-invalid #x0001
+  "Error code for invalid username.")
+
+(defconst rudel-obby-error-username-in-use #x0002
+  "Error code for username already in use.")
+
+(defconst rudel-obby-error-color-in-use #x0100
+  "Error code for color already in use.")
+
+(defconst rudel-obby-error-wrong-global-password #x0101
+  "Error code for wrong global password.")
+
+(defconst rudel-obby-error-wrong-user-password #x0102
+  "Error code for wrong user password.")
+
+(defconst rudel-obby-error-protocol-version-mismatch #x0103
+  "Error code for protocol version mismatch.")
+
+(defconst rudel-obby-error-not-encrypted  #x0104
+  "Error code for not encrypted.")
+
+(provide 'rudel-obby-errors)
+;;; rudel-obby-errors.el ends here
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-server.el.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-server.el.svn-base
new file mode 100644
index 0000000..5bf1158
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-server.el.svn-base
@@ -0,0 +1,798 @@
+;;; rudel-obby-server.el --- Server component of the Rudel obby backend
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, server
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the server part of the obby backend for Rudel.
+;;
+;; It is implemented using one state machine (class
+;; `rudel-obby-client') for each client connection. These state
+;; machines have the following states:
+;;
+;; + new                  `rudel-obby-server-state-new'
+;; + encryption-negotiate `rudel-obby-server-state-encryption-negotiate'
+;; + before-join          `rudel-obby-server-state-before-join'
+;; + idle                 `rudel-obby-server-state-idle'
+
+
+;;; History:
+;;
+;; 0.2 - State machine.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'jupiter)
+
+(require 'rudel-state-machine)
+
+(require 'rudel-obby-errors)
+(require 'rudel-obby-util)
+(require 'rudel-obby-state)
+
+
+;;; Class rudel-obby-server-state-new
+;;
+
+(defclass rudel-obby-server-state-new
+  (rudel-obby-server-connection-state)
+  ()
+  "State in which new connections start out.")
+
+(defmethod rudel-enter ((this rudel-obby-server-state-new))
+  "Sends welcome messages to the client and starts the session
+timeout timer."
+  ;; Send greeting sequence to the client.
+  (rudel-send this
+	      "obby_welcome"
+	      (number-to-string rudel-obby-protocol-version))
+
+  ;; Switch to encryption negotiation state.
+  'encryption-negotiate)
+
+
+;;; Class rudel-obby-server-state-encryption-negotiate
+;;
+
+(defclass rudel-obby-server-state-encryption-negotiate
+  (rudel-obby-server-connection-state)
+  ()
+  "Encryption negotiation state.")
+
+(defmethod rudel-enter ((this rudel-obby-server-state-encryption-negotiate))
+  "Send net6 'encryption' message requesting to not enable encryption."
+  (rudel-send this "net6_encryption" "0")
+  nil)
+
+(defmethod rudel-obby/net6_encryption_ok
+  ((this rudel-obby-server-state-encryption-negotiate))
+  "Handle net6 'encryption_ok' message.
+Even if the client requests an encrypted connection, we cancel
+the negotiation."
+  (rudel-send this "net6_encryption_failed")
+  'before-join)
+
+(defmethod rudel-obby/net6_encryption_failed
+  ((this rudel-obby-server-state-encryption-negotiate))
+  "Handle net6 'encryption_failed' message.
+No action has to be taken, since the client simply proceeds after
+failed encryption negotiation."
+  'before-join)
+
+
+;;; Class rudel-obby-server-state-before-join
+;;
+
+(defclass rudel-obby-server-state-before-join
+  (rudel-obby-server-connection-state)
+  ()
+  "Waiting for client request joining the session.")
+
+(defmethod rudel-obby/net6_client_login
+  ((this rudel-obby-server-state-before-join) username color
+   &optional global-password user-password)
+  "Handle net6 'client_login' message."
+  (with-parsed-arguments ((color color))
+    (with-slots (server
+		 (client-id :id)
+		 user
+		 encryption) (oref this :connection)
+      ;; Make sure USERNAME and COLOR are valid.
+      (let ((error (rudel-check-username-and-color
+		    server username color)))
+	(if error
+	    ;; If USERNAME or COLOR are invalid, send the error code
+	    ;; to the client and stay in the current state.
+	    (progn
+	      (rudel-send this
+			  "net6_login_failed"
+			  (format "%x" error))
+	      nil)
+
+	  ;; Create a user object for this client and add it to the
+	  ;; server.
+	  (setq user (rudel-make-user
+		      server
+		      username client-id color encryption))
+	  (rudel-add-user server user)
+
+	  ;; Broadcast the join event to all clients (including the
+	  ;; new one).
+	  (with-slots ((name :object-name) color (user-id :user-id)) user
+	    (rudel-broadcast this (list 'exclude (oref this :connection))
+			     "net6_client_join"
+			     (format "%x" client-id)
+			     name
+			     "0"
+			     (format "%x" user-id)
+			     (rudel-obby-format-color color)))
+
+	  ;; Get the new client up to date:
+	  ;; - transmit user list
+	  ;;   - connected users
+	  ;;   - disconnected users
+	  ;; - transmit document list
+	  (with-slots (users clients documents) server
+	    ;; Send number of synchronization items: sum of numbers of
+	    ;; offline users and documents.
+	    (let ((number-of-items (+ (length users) (length documents))))
+	      (rudel-send this
+			  "obby_sync_init"
+			  (format "%x" number-of-items)))
+
+	    ;; Transmit list of connected users.
+	    (dolist (client clients)
+	      (with-slots ((client-id :id) user) client
+		(when user
+		  (with-slots ((name    :object-name)
+			       color
+			       (user-id :user-id)) user
+		    (rudel-send this
+				"net6_client_join"
+				(format "%x" client-id)
+				name
+				"0"
+				(format "%x" user-id)
+				(rudel-obby-format-color color))))))
+
+	    ;; Transmit list of disconnected users.
+	    (let ((offline-users (remove-if #'rudel-connected users)))
+	      (dolist (user offline-users)
+		(with-slots ((name :object-name) user-id color) user
+		  (rudel-send this
+			      "obby_sync_usertable_user"
+			      (format "%x" user-id)
+			      name
+			      (rudel-obby-format-color color)))))
+
+	    ;; Transmit document list
+	    (dolist (document documents)
+	      (with-slots ((name      :object-name)
+			   (doc-id    :id)
+			   owner-id
+			   suffix
+			   subscribed) document
+		(apply #'rudel-send
+		       this
+		       "obby_sync_doclist_document"
+		       (format "%x" owner-id)
+		       (format "%x" doc-id)
+		       name
+		       (format "%x" suffix)
+		       "UTF-8"
+		       (mapcar
+			(lambda (user1) ;; TODO we could use `user' here, but there is a bug in cl
+			  (format "%x" (rudel-id user1)))
+			subscribed)))))
+
+	  (rudel-send this "obby_sync_final")
+	  'idle))))
+  )
+
+
+;;; Class rudel-obby-server-state-idle
+;;
+
+(defclass rudel-obby-server-state-idle
+  (rudel-obby-server-connection-state)
+  ()
+  "Idle state of a server connection.
+
+The connection enters this state when all setup work is finished,
+the client has joined the session and no operation is in
+progress. In this state, the connection waits for new messages
+from the client that initiate operations. Simple (which means
+stateless in this case) operations are performed without leaving
+the idle state.")
+
+(defmethod rudel-obby/obby_user_colour
+  ((this rudel-obby-server-state-idle) color-)
+  "Handle obby 'user_colour' message.
+This method is called when the connected user requests a change
+of her color to COLOR."
+  (with-parsed-arguments ((color- color))
+    (with-slots (user) (oref this :connection)
+      (with-slots (color (user-id :user-id)) user
+	;; Set color slot value.
+	(setq color color-)
+
+	;; Run change hook.
+	(object-run-hook-with-args user 'change-hook)
+
+	(rudel-broadcast this (list 'exclude (oref this :connection))
+			 "obby_user_colour"
+			 (format "%x" user-id)
+			 (rudel-obby-format-color color)))))
+  nil)
+
+(defmethod rudel-obby/obby_document_create
+  ((this rudel-obby-server-state-idle)
+   doc-id name encoding content)
+  "Handle obby 'document_create' message."
+  (with-parsed-arguments ((doc-id   number)
+			  (encoding coding-system))
+    (with-slots (user server) (oref this :connection)
+      (with-slots ((user-id :user-id)) user
+	;; Create a (hidden) buffer for the new document.
+	(let* ((buffer         (get-buffer-create
+				(generate-new-buffer-name
+				 (concat " *"  name "*"))))
+	       ;; Create the new document object
+	       (document       (rudel-obby-document
+				name
+				:buffer     buffer
+				:subscribed (list user)
+				:id         doc-id
+				:owner-id   user-id
+				:suffix     1)))
+
+	  ;; Initialize the buffer's content
+	  (with-current-buffer buffer
+	    (insert content))
+
+	  (with-slots (suffix) document
+	    ;; Determine an appropriate suffix to provide an unique
+	    ;; name for the new document.
+	    (while (rudel-find-document server
+					(if (= suffix 1)
+					    name
+					  (format "%s<%d>" name suffix))
+					#'string= #'rudel-unique-name)
+	      (incf suffix))
+
+	    ;; Add the document to the server's document list
+	    (rudel-add-document server document)
+
+	    ;; Maybe notify the creating client of the changed suffix.
+	    (unless (= suffix 1)
+	      (rudel-send this
+			  "obby_document"
+			  (format "%x %x" user-id doc-id)
+			  "rename"
+			  (format "%x" user-id)
+			  name
+			  (format "%x" suffix)))
+
+	    ;; Notify other clients of the new document
+	    (rudel-broadcast this (list 'exclude  (oref this :connection))
+			     "obby_document_create"
+			     (format "%x" user-id)
+			     (format "%x" doc-id)
+			     name
+			     (format "%x" suffix)
+			     (upcase (symbol-name encoding))))
+
+	  ;; Add a jupiter context for (THIS DOCUMENT).
+	  (rudel-add-context server (oref this :connection) document))))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document
+  ((this rudel-obby-server-state-idle) doc-id action &rest arguments)
+  "Handle obby 'document' messages."
+  (with-parsed-arguments ((doc-id document-id))
+    ;; Locate the document based on owner id and document id
+    (let ((document (with-slots (server) (oref this :connection)
+		      (rudel-find-document server doc-id
+					   #'equal #'rudel-both-ids))))
+      (rudel-obby-dispatch this action
+			   (append (list document) arguments)
+			   "rudel-obby/obby_document/")))
+  )
+
+(defmethod rudel-obby/obby_document/subscribe
+  ((this rudel-obby-server-state-idle) document user-id)
+  "Handle 'subscribe' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id number))
+    (let ((user (with-slots (server) (oref this :connection)
+		  (rudel-find-user server user-id
+				   #'= #'rudel-id))))
+      (with-slots (owner-id (doc-id :id) subscribed buffer) document
+
+	;; Track subscription, handle duplicate subscription requests.
+	(when (memq user subscribed)
+	  (error "User `%s' already subscribed to document `%s'"
+		 (object-name user) (object-name document)))
+	(rudel-add-user document user)
+
+	;; Synchronize the buffer content to the client.
+	(with-current-buffer buffer
+	  ;; Send overall buffer size
+	  (rudel-send this
+		      "obby_document"
+		      (format "%x %x" owner-id doc-id)
+		      "sync_init"
+		      (format "%x" (1- (position-bytes (point-max)))))
+
+	  ;; Send buffer chunks with author ids
+	  (dolist (chunk (rudel-chunks document))
+	    (multiple-value-bind (from to author) chunk
+	      (let ((string (buffer-substring (+ from 1) (+ to 1))))
+		(rudel-send this
+			    "obby_document"
+			    (format "%x %x" owner-id doc-id)
+			    "sync_chunk"
+			    string
+			    (format "%x"
+				    (if author
+					(oref author :user-id)
+				      0)))))))
+
+	;; Notify clients of the new subscription (including our own
+	;; client, who requested the subscription).
+	(with-slots ((user-id :user-id)) user
+	  (rudel-broadcast this nil
+			   "obby_document"
+			   (format "%x %x" owner-id doc-id)
+			   "subscribe"
+			   (format "%x" user-id)))))
+
+    ;; Add a jupiter context for (THIS document).
+    (with-slots (server) (oref this :connection)
+      (rudel-add-context server (oref this :connection) document))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document/unsubscribe
+  ((this rudel-obby-server-state-idle) document user-id)
+  "Handle 'unsubscribe' submessage of 'obby_document' message."
+  (with-parsed-arguments ((user-id number))
+    (let ((user (with-slots (server) (oref this :connection)
+		  (rudel-find-user server user-id
+				   #'= #'rudel-id))))
+      (with-slots (owner-id (doc-id :id) subscribed) document
+
+	;; Track subscription, handle invalid unsubscribe requests
+	(unless (memq user subscribed)
+	  (error "User `%s' not subscribed to document `%s'"
+		 (object-name user) (object-name document)))
+	(rudel-remove-user document user)
+
+	;; Notify clients of the canceled subscription (including our
+	;; own client, who requested being unsubscribed).
+	(with-slots ((user-id :user-id)) user
+	  (rudel-broadcast this nil
+			   "obby_document"
+			   (format "%x %x" owner-id doc-id)
+			   "unsubscribe"
+			   (format "%x" user-id))))
+
+      ;; Remove jupiter context for (THIS DOCUMENT).
+      (with-slots (server) (oref this :connection)
+	(rudel-remove-context server (oref this :connection) document)))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document/record
+  ((this rudel-obby-server-state-idle)
+   document local-revision remote-revision action &rest arguments)
+  "Handle 'record' submessages of 'obby_document' message."
+  (with-parsed-arguments ((local-revision  number)
+			  (remote-revision number))
+    ;; Dispatch to specialized operation handlers.
+    (rudel-obby-dispatch
+     this action
+     (append (list document local-revision remote-revision)
+	     arguments)
+     "rudel-obby/obby_document/record/"))
+  )
+
+(defmethod rudel-obby/obby_document/record/ins
+  ((this rudel-obby-server-state-idle)
+   document local-revision remote-revision position data)
+  "Handle 'ins' submessage of 'record' submessages of 'obby_document' message."
+  (with-parsed-arguments ((position number))
+    ;; Construct the operation object and process it.
+    (rudel-remote-operation
+     (oref this :connection) document
+     remote-revision local-revision
+     (jupiter-insert
+      (format "insert-%d-%d"
+	      remote-revision local-revision)
+      :from position
+      :data data))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document/record/del
+  ((this rudel-obby-server-state-idle)
+   document local-revision remote-revision position length)
+  "Handle 'del' submessage of 'record' submessages of 'obby_document' message."
+  (with-parsed-arguments ((position number)
+			  (length   number))
+    ;; Construct the operation object and process it.
+    (rudel-remote-operation
+     (oref this :connection) document
+     remote-revision local-revision
+     (jupiter-delete
+      (format "delete-%d-%d"
+	      remote-revision local-revision)
+      :from position
+      :to   (+ position length)))
+    nil)
+  )
+
+
+;;; Client connection states.
+;;
+
+(defvar rudel-obby-server-connection-states
+  '((new                  . rudel-obby-server-state-new)
+    (encryption-negotiate . rudel-obby-server-state-encryption-negotiate)
+    (before-join          . rudel-obby-server-state-before-join)
+    (idle                 . rudel-obby-server-state-idle))
+  "Name symbols and classes of connection states.")
+
+
+;;; Class rudel-obby-client
+;;
+
+(defclass rudel-obby-client (rudel-obby-socket-owner
+			     rudel-state-machine)
+  ((server     :initarg  :server
+	       :type     rudel-obby-server
+	       :documentation
+	       "")
+   (id         :initarg  :id
+	       :type     integer
+	       :accessor rudel-id
+	       :documentation
+	       "")
+   (user       :initarg  :user
+	       :type     (or rudel-obby-user null)
+	       :initform nil
+	       :documentation
+	       "")
+   (encryption :initarg  :encryption
+	       :type     boolean
+	       :documentation
+	       ""))
+  "Each object of this class represents one client, that is
+connected to the server. This object handles all direct
+communication with the client, while broadcast messages are
+handled by the server.")
+
+(defmethod initialize-instance ((this rudel-obby-client) &rest slots)
+  "Initialize slots of THIS and register state machine states."
+  ;; Initialize slots of THIS
+  (when (next-method-p)
+    (call-next-method))
+
+  ;; Register states.
+  (rudel-register-states this rudel-obby-server-connection-states)
+  )
+
+(defmethod rudel-register-state ((this rudel-obby-client) symbol state)
+  "Register SYMBOL and STATE and set connection slot of STATE."
+  ;; Associate THIS connection to STATE.
+  (oset state :connection this)
+
+  ;; Register STATE.
+  (call-next-method))
+
+(defmethod rudel-end ((this rudel-obby-client))
+  ""
+  (rudel-disconnect this))
+
+(defmethod rudel-close ((this rudel-obby-client))
+  ""
+  (with-slots (server) this
+    (rudel-remove-client server this)))
+
+(defmethod rudel-message ((this rudel-obby-client) message)
+  "Dispatch MESSAGE to the active state of THIS state machine."
+  ;; Dispatch message to state
+  (rudel-accept this message))
+
+(defmethod rudel-broadcast ((this rudel-obby-client)
+			    receivers name &rest arguments)
+  "Broadcast message NAME with arguments ARGUMENTS to RECEIVERS."
+  (with-slots (server) this
+    (apply #'rudel-broadcast server receivers name arguments)))
+
+(defmethod rudel-remote-operation ((this rudel-obby-client)
+				   document
+				   local-revision remote-revision
+				   operation)
+  "Execute and relay OPERATION on DOCUMENT."
+  (with-slots (server user) this
+    ;; Transform OPERATION and find clients that need to receive
+    ;; notifications.
+    (let* ((context     (rudel-find-context server this document))
+	   (transformed (jupiter-remote-operation
+			 context
+			 local-revision remote-revision
+			 operation))
+	   (receivers   (rudel-subscribed-clients-not-self
+			 this document)))
+
+      ;; Relay change notification to other clients. We use
+      ;; TRANSFORMED before the byte -> char conversion which is what
+      ;; the receivers expect.
+      (with-slots (user-id) user
+	(with-slots (owner-id (doc-id :id)) document
+	  ;; Construct and send messages to all receivers individually
+	  ;; since the contents of the messages depends on the state
+	  ;; of the jupiter context associated the respective
+	  ;; receiver.
+	  (dolist (receiver receivers)
+
+	    ;; Find the jupiter context for RECEIVER and use its
+	    ;; revision information.
+	    (let ((context (rudel-find-context server receiver document)))
+	      ;; Construct and send one message.
+	      (with-slots (local-revision remote-revision) context
+		(apply #'rudel-send
+		       receiver
+		       "obby_document"
+		       (format "%x %x" owner-id doc-id)
+		       "record"
+		       (format "%x" user-id)
+		       (format "%x" local-revision)
+		       (format "%x" remote-revision)
+		       (rudel-operation->message transformed)))
+
+	      ;; Submit the operation to the jupiter context.
+	      (jupiter-local-operation context transformed)))))
+
+      ;; Incorporate change into DOCUMENT (the server-side
+      ;; document). We have to convert bytes -> chars before we can do
+      ;; this.
+      (with-slots (buffer) document
+	(rudel-obby-byte->char transformed buffer))
+
+      (rudel-remote-operation document user transformed)))
+  )
+
+(defmethod rudel-subscribed-clients-not-self ((this rudel-obby-client)
+					      document)
+  "Return a list of clients subscribed to DOCUMENT excluding THIS."
+  (with-slots (clients) (oref this :server)
+    (with-slots (subscribed) document
+      (remove-if
+       (lambda (client)
+	 (with-slots (user) client
+	   (or (eq client this)
+	       (not (memq user subscribed)))))
+       clients)))
+  )
+
+
+;;; Class rudel-obby-server
+;;
+
+(defclass rudel-obby-server (rudel-server-session
+			     rudel-socket-owner)
+  ((clients        :initarg  :clients
+		   :type     list
+		   :initform nil
+		   :documentation
+		   "")
+   (next-client-id :initarg  :next-client-id
+		   :type     integer
+		   :initform 1
+		   :documentation
+		   "")
+   (next-user-id   :initarg  :next-user-id
+		   :type     integer
+		   :initform 1
+		   :documentation
+		   "")
+   (contexts       :initarg  :contexts
+		   :type     hash-table
+		   :documentation
+		   ""))
+  "Class rudel-obby-server ")
+
+(defmethod initialize-instance ((this rudel-obby-server) &rest slots)
+  ""
+  (when (next-method-p)
+    (call-next-method))
+
+  (with-slots (contexts) this
+    (setq contexts (make-hash-table :test 'equal))))
+
+(defmethod rudel-end ((this rudel-obby-server))
+  ""
+  (rudel-disconnect this))
+
+(defmethod rudel-broadcast ((this rudel-obby-server)
+			    receivers name &rest arguments)
+  "Send a message of type NAME with arguments ARGUMENTS to RECEIVERS.
+
+RECEIVERS can be a object derived from rudel-obby-client, a list
+of such objects or a list with car 'exclude and cdr a list of
+such objects derived from rudel-obby-client."
+  ;; Construct list of receivers.
+  (let ((receiver-list
+	 (cond
+	  ;; If RECEIVERS is nil, the message should be broadcast to
+	  ;; all clients.
+	  ((null receivers) (oref this :clients))
+	  ;; If RECEIVERS is a (non-empty) list of rudel-obby-client
+	  ;; (or derived) objects, treat it as a list of receivers.
+	  ((and (listp receivers)
+		(rudel-obby-client-child-p (car receivers)))
+	   receivers)
+	  ;; If RECEIVERS is a (non-empty) list with cdr equal to
+	  ;; 'exclude treat it as a list of receivers to exclude.
+	  ((and (listp receivers)
+		(eq (car receivers) 'exclude))
+	   (with-slots (clients) this
+	     (set-difference clients (cdr receivers)
+			     :key #'rudel-id)))
+	  ;; If RECEIVERS is a single rudel-obby-client (or derived)
+	  ;; object, send the message to that client.
+	  ((rudel-obby-client-child-p receivers)
+	   (list receivers))
+	  ;;
+	  (t (signal 'wrong-type-argument (type-of receivers))))))
+
+    ;; Send message to receivers.
+    (dolist (receiver receiver-list)
+      (apply #'rudel-send receiver name arguments)))
+  )
+
+(defmethod rudel-make-user ((this rudel-obby-server)
+			    name client-id color encryption)
+  ""
+  (with-slots (next-user-id) this
+    (let ((user (rudel-obby-user name
+                 :color      color
+		 :client-id  client-id
+		 :user-id    next-user-id
+		 :connected  t
+		 :encryption encryption)))
+      (incf next-user-id)
+      user))
+  )
+
+(defmethod rudel-check-username-and-color ((this rudel-obby-server)
+					   username color)
+  "Check whether USERNAME and COLOR are valid.
+USERNAME must not be empty and must not be used by another
+user. COLOR has to be sufficiently different from used colors."
+  (cond
+   ;; The empty user name is not allowed
+   ((string= username "")
+    rudel-obby-error-username-invalid)
+
+   ;; Make sure the user name is not already in use.
+   ((rudel-find-user this username
+		     #'string= #'object-name-string)
+    rudel-obby-error-username-in-use)
+
+   ;; Make sure the color is sufficiently dissimilar to all used
+   ;; colors.
+   ((rudel-find-user this color
+		     (lambda (left right)
+		       (< (color-distance left right) 20000)) ;; TODO constant
+		     #'rudel-color)
+    rudel-obby-error-color-in-use))
+  )
+
+(defmethod rudel-add-client ((this rudel-obby-server)
+			     client-socket)
+  ""
+  (with-slots (next-client-id clients) this
+    (let ((client (rudel-obby-client (process-name client-socket)
+		   :server     this
+		   :socket     client-socket
+		   :id         next-client-id
+		   :encryption nil)))
+      (push client clients))
+    (incf next-client-id))
+  )
+
+(defmethod rudel-remove-client ((this rudel-obby-server)
+				client)
+  ""
+  (with-slots ((client-id :id) user) client
+    ;; Broadcast the part event to all remaining clients.
+    (rudel-broadcast this (list 'exclude client)
+		     "net6_client_part"
+		     (format "%x" client-id))
+
+    ;; If the client has an associated user object, set the status of
+    ;; the user object to offline.
+    (when user
+      ;; Set slot value.
+      (with-slots (connected) user
+	(setq connected nil))
+
+      ;; Run change hook.
+      (object-run-hook-with-args user 'change-hook)))
+
+  (object-remove-from-list this :clients client)
+  )
+
+(defmethod rudel-find-context ((this rudel-obby-server) client document)
+  "Return the jupiter context associated to (CLIENT DOCUMENT) in THIS."
+  (with-slots (contexts) this
+    (gethash (rudel-obby-context-key client document) contexts)))
+
+(defmethod rudel-add-context ((this rudel-obby-server) client document)
+  "Add a jupiter context for (CLIENT DOCUMENT) to THIS."
+  (with-slots (contexts) this
+    (with-slots ((client-id :id)) client
+      (with-slots ((doc-name :object-name)) document
+	(puthash
+	 (rudel-obby-context-key client document)
+	 (jupiter-context (format "%d-%s" client-id doc-name))
+	 contexts))))
+  )
+
+(defmethod rudel-remove-context ((this rudel-obby-server) client document)
+  "Remove the jupiter context associated to (CLIENT DOCUMENT) from THIS."
+  (with-slots (contexts) this
+    (remhash
+     (rudel-obby-context-key client document)
+     contexts)))
+
+(defun rudel-obby-context-key (client document)
+  "Generate hash key based on CLIENT and DOCUMENT."
+  (with-slots ((client-id :id)) client
+    (with-slots ((doc-id :id)) document
+      (list client-id doc-id))))
+
+(defmethod object-print ((this rudel-obby-server) &rest strings)
+  "Print THIS with number of clients."
+  (with-slots (clients) this
+    (apply #'call-next-method
+	   this
+	   (format " clients: %d"
+		   (length clients))
+	   strings))
+  )
+
+(provide 'rudel-obby-server)
+;;; rudel-obby-server.el ends here
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-state.el.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-state.el.svn-base
new file mode 100644
index 0000000..a190967
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-state.el.svn-base
@@ -0,0 +1,169 @@
+;;; rudel-obby-state.el --- Base class for states used in the obby backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, state machine
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a base class for finite state machine states
+;; used in the obby backend.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-util)
+(require 'rudel-state-machine)
+
+(require 'rudel-obby-util)
+
+
+;;; Class rudel-obby-state
+;;
+
+(defclass rudel-obby-state (rudel-state)
+  ((connection :initarg :connection
+	       :type    rudel-obby-socket-owner
+	       :documentation
+	       "Connection object that uses the state."))
+  "Base class for state classes used in the obby backend."
+  :abstract t)
+
+(defmethod rudel-enter ((this rudel-obby-state))
+  "Default behavior is doing nothing when entering a state."
+  nil)
+
+(defmethod rudel-leave ((this rudel-obby-state))
+  "Default behavior is doing nothing when leaving a state.")
+
+(defmethod rudel-accept ((this rudel-obby-state) message)
+  "Dispatch to appropriate handler based on MESSAGE.
+Display a warning if no such handler is found."
+  ;; Try to dispatch to the correct message handler. If there is none,
+  ;; warn.
+  (let ((name      (car message))
+	(arguments (cdr message)))
+    (condition-case error
+	;; Try to dispatch
+	(rudel-dispatch this "rudel-obby/" name arguments)
+      ;; Warn if we failed to locate or execute the method. Return nil
+      ;; in this case, so we remain in the current state.
+      (rudel-dispatch-error
+       (progn
+	 (display-warning
+	  '(rudel obby)
+	  (format "%s: no method (%s: %s): `%s/%s'; arguments: %s"
+		  (object-print this) (car error) (cdr error)
+		  "rudel-obby" name arguments)
+	  :debug)
+	 nil))))
+  )
+
+(defmethod rudel-send ((this rudel-obby-state) &rest args)
+  "Send ARGS through the connection associated with THIS."
+  (with-slots (connection) this
+    (apply #'rudel-send connection args)))
+
+
+;;; Class rudel-obby-client-connection-state
+;;
+
+(defclass rudel-obby-client-connection-state (rudel-obby-state)
+  ()
+  "Base class for state classes used by obby client connections."
+  :abstract t)
+
+(defmethod rudel-obby/net6_ping ((this rudel-obby-client-connection-state))
+  "Handle net6 'ping' message."
+  (rudel-send this "net6_pong")
+  nil)
+
+
+;;; Class rudel-obby-server-connection-state
+;;
+
+(defclass rudel-obby-server-connection-state (rudel-obby-state)
+  ()
+  "Base class for server connection states."
+  :abstract t)
+
+(defmethod rudel-broadcast ((this rudel-obby-server-connection-state)
+			    receivers name &rest arguments)
+  "Broadcast message NAME with arguments ARGUMENTS to RECEIVERS."
+  (with-slots (connection) this
+    (apply #'rudel-broadcast connection receivers name arguments)))
+
+
+;;; Class rudel-obby-document-handler
+;;
+
+(defclass rudel-obby-document-handler ()
+  ()
+  "Mixin class that provides ability to process submessages of
+  obby 'document' messages.")
+
+(defmethod rudel-obby/obby_document
+  ((this rudel-obby-document-handler) doc-id action &rest arguments)
+  "Handle obby 'document' message family."
+  ;; Try to dispatch to the correct message handler. If there is none,
+  ;; warn.
+  (with-parsed-arguments ((doc-id document-id))
+    ;; Locate the document based on owner id and document id.
+    (let ((document (with-slots (connection) this
+		      (with-slots (session) connection
+			(rudel-find-document session doc-id
+					     #'equal #'rudel-both-ids)))))
+      (if document
+	  (condition-case error
+	      ;; Try to dispatch
+	      (rudel-dispatch this "rudel-obby/obby_document/" action
+			      (cons document arguments))
+	    ;; Warn if we failed to locate or execute the
+	    ;; method. Return nil in this case, so we remain in the
+	    ;; current state.
+	    (rudel-dispatch-error
+	     (progn
+	       (display-warning
+		'(rudel obby)
+		(format "%s: no method (%s: %s): `%s:%s'; arguments: %s"
+			(object-print this) (car error) (cdr error)
+			"rudel-obby/obby_document/" action arguments)
+		:debug)
+	       nil)))
+	;; If we did not find the document, warn.
+	(progn
+	  (display-warning
+	   '(rudel obby)
+	   (format "Document not found: %s" doc-id)
+	   :debug)
+	  nil))))
+  )
+
+(provide 'rudel-obby-state)
+;;; rudel-obby-state.el ends here
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-util.el.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-util.el.svn-base
new file mode 100644
index 0000000..faefe70
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby-util.el.svn-base
@@ -0,0 +1,314 @@
+;;; rudel-obby-util.el --- Miscellaneous functions for the Rudel obby backend
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, miscellaneous
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;;
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel)
+(require 'rudel-util)
+
+(require 'jupiter)
+
+
+;;; Class rudel-obby-socket-owner
+;;
+
+(defclass rudel-obby-socket-owner (rudel-socket-owner)
+  ((buffer :initarg  :buffer
+	   :type     (or null string)
+	   :initform nil
+	   :documentation
+	   "Stores message fragments until complete messages can
+be assembled."))
+  "This class adds functions for sending and receiving obby
+messages to the base class rudel-socket-owner.")
+
+(defmethod rudel-send ((this rudel-obby-socket-owner)
+		       name &rest arguments)
+  "Send obby message NAME with arguments ARGUMENTS through the socket associated to THIS."
+  (with-slots (socket) this
+    (rudel-obby-send socket name arguments)))
+
+(defmethod rudel-receive ((this rudel-obby-socket-owner) data)
+  "Reassemble lines in DATA received on the socket associated with THIS and call message handler."
+  ;; Assemble fragmented lines.
+  (with-slots (buffer) this
+    (rudel-assemble-line-fragments data buffer))
+
+  ;; Process all available lines.
+  (rudel-loop-lines data line
+    ;; `rudel-message' has to dispatch message to an appropriate
+    ;; handler.
+    (let ((message (rudel-obby-parse-message line)))
+      (rudel-message this message)))
+  )
+
+(defgeneric rudel-message ((this rudel-obby-socket-owner) message)
+  "Called when a message arrives.
+Should be implemented in derived classes.")
+
+
+;;; Message serialization
+;;
+
+(defgeneric rudel-operation->message ((this jupiter-operation))
+  "Generate a list obby message components from THIS operation.")
+
+(defmethod rudel-operation->message ((this jupiter-insert))
+  "Serialize THIS insert operation."
+  (with-slots (from data) this
+    (list "ins" (format "%x" from) data)))
+
+(defmethod rudel-operation->message ((this jupiter-delete))
+  "Serialize THIS delete operation."
+  (with-slots (from length) this
+    (list "del" (format "%x" from) (format "%x" length))))
+
+(defmethod rudel-operation->message ((this jupiter-compound))
+  "Serialize THIS compound operation."
+  (with-slots (children) this
+    (apply #'append
+	   (list "split" )
+	   (mapcar #'rudel-operation->message children))))
+
+(defmethod rudel-operation->message ((this jupiter-nop))
+  "Serialize THIS nop operation."
+  (list "nop"))
+
+(defun rudel-message->operation (message local-revision remote-revision)
+  "Construct an operation object from MESSAGE and LOCAL-REVISION and REMOTE-REVISION.
+LOCAL-REVISION and REMOTE-REVISION are only used in the
+construction of the name of the new operation. "
+  (let ((type (car message)))
+    (cond
+
+     ;; Insert operation
+     ((string= type "ins")
+      (let ((position-numeric (string-to-number (nth 1 message) 16))
+	    (data             (nth 2 message)))
+	(jupiter-insert
+	 (format "insert-%d-%d"
+		 remote-revision local-revision)
+	 :from position-numeric
+	 :data data)))
+
+     ;; Delete operation
+     ((string= type "del")
+      (let ((position-numeric (string-to-number (nth 1 message) 16))
+	    (length-numeric   (string-to-number (nth 2 message) 16)))
+	(jupiter-delete
+	 (format "delete-%d-%d"
+		 remote-revision local-revision)
+	 :from position-numeric
+	 :to   (+ position-numeric length-numeric))))
+
+     ;; Compound operation
+     ((string= type "split")
+      (let* ((rest   (cdr message))
+	     (offset (position-if
+		       (lambda (item)
+			 (member* item '("ins" "del" "nop")
+				  :test #'string=))
+		       rest
+		       :start 1))
+	     (first  (subseq rest 0 offset))
+	     (second (subseq rest offset)))
+	(jupiter-compound
+	 (format "compound-%d-%d"
+		 remote-revision local-revision)
+	 :children
+	 (list (rudel-message->operation
+		first local-revision remote-revision)
+	       (rudel-message->operation
+		second local-revision remote-revision)))))
+
+     ;; No operation
+     ((string= type "nop")
+      (jupiter-nop
+       (format "nop-%d-%d"
+	       remote-revision local-revision)))
+
+     ;; Unknown operation type
+     (t (error "Unknown document record type: `%s'" type))))
+  )
+
+
+;;; Character <-> byte position conversion
+;;
+
+(defgeneric rudel-obby-char->byte ((this jupiter-operation) buffer)
+  "Convert character positions and lengths in THIS to bytes.")
+
+(defmethod rudel-obby-char->byte ((this jupiter-insert) buffer)
+  "Convert character positions and lengths in THIS insert to bytes."
+  (with-slots (from) this
+    (with-current-buffer buffer
+      (setq from (- (position-bytes (+ from 1)) 1)))))
+
+(defmethod rudel-obby-char->byte ((this jupiter-delete) buffer)
+ "Convert character positions and lengths in THIS delete to bytes."
+  (with-slots (from to length) this
+    (let ((old-from (+ from 1))
+	  (old-to   (+ to   1)))
+      (with-current-buffer buffer
+	(destructuring-bind (change-from change-to string)
+	    rudel-buffer-change-workaround-data
+	  (setq from   (- (position-bytes old-from) 1)
+		length (string-bytes
+			(substring string
+				   (- old-from change-from)
+				   (- old-to   change-from))))))))
+  )
+
+(defmethod rudel-obby-char->byte ((this jupiter-compound) buffer)
+  "Convert character positions and lengths in THIS compound to bytes.."
+  (with-slots (children) this
+    (mapc
+     (lambda (child)
+       (rudel-obby-char->byte child buffer))
+     children))
+  )
+
+(defmethod rudel-obby-char->byte ((this jupiter-nop) buffer)
+  "Nothing to convert if THIS is a nop.")
+
+(defgeneric rudel-obby-byte->char ((this jupiter-operation) buffer)
+  "Convert byte positions and lengths in THIS to character positions.")
+
+(defmethod rudel-obby-byte->char ((this jupiter-insert) buffer)
+  "Convert byte positions and lengths in THIS insert to character positions."
+  (with-slots (from) this
+    (with-current-buffer buffer
+      (setq from (- (byte-to-position (+ from 1)) 1)))))
+
+(defmethod rudel-obby-byte->char ((this jupiter-delete) buffer)
+  "Convert byte positions and lengths in THIS delete to character positions."
+  (with-slots (from to length) this
+    (let ((old-from   from)
+	  (old-length length))
+      (with-current-buffer buffer
+	(setq from (- (byte-to-position (+ old-from 1)) 1)
+	      to   (- (byte-to-position (+ old-from old-length 1)) 1)))))
+  )
+
+(defmethod rudel-obby-byte->char ((this jupiter-compound) buffer)
+  "Convert byte positions and lengths in THIS compound to character positions."
+  (with-slots (children) this
+    (mapc
+     (lambda (child)
+       (rudel-obby-byte->char child buffer))
+     children))
+  )
+
+(defmethod rudel-obby-byte->char ((this jupiter-nop) buffer)
+  "Nothing to convert if THIS is a nop.")
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-obby-dispatch (object name arguments &optional prefix)
+  "Call method starting with PREFIX and ending in NAME of OBJECT with ARGUMENTS.
+When PREFIX is not specified, \"rudel-obby/\" is used."
+  ;; Default prefix.
+  (unless prefix
+    (setq prefix "rudel-obby/"))
+
+  ;; Construct a matching symbol.
+  (let ((method (intern-soft (concat prefix name))))
+    ;; If we found a suitable method, run it; Otherwise warn and do
+    ;; nothing.
+    (unless (and method
+		 (condition-case error
+		     ;; Try to call METHOD. If successful, always
+		     ;; return t.
+		     (progn
+		       (apply method object arguments)
+		       t)
+		   ;; Warn only when the condition is
+		   ;; 'no-method-definition' and refers to METHOD,
+		   ;; otherwise continue unwinding.
+		   (no-method-definition
+		    (if (eq method (cadr error))
+			nil
+		      (signal (car error) (cdr error))))))
+      (display-warning
+       '(rudel obby)
+       (format "%s: in context `%s': no method: `%s'; arguments: %s"
+	       (object-name-string object) prefix name arguments)
+       :debug)))
+  )
+
+(defmacro with-parsed-arguments (specs &rest forms)
+  "Execute FORMS with variable bindings according to SPECS.
+SPECS is structured as follows:
+SPECS   ::= (BINDING*)
+BINDING ::= (VAR TYPE)
+VAR is a symbol and TYPE is one of number, color, document-id and
+coding-system."
+  (declare (indent 1)
+	   (debug (listp &rest form)))
+  (let ((bindings
+	 (mapcar
+	  (lambda (spec)
+	    (destructuring-bind (var type) spec
+	      (list var
+		    (case type
+		      ;; Number
+		      (number
+		       `(string-to-number ,var 16))
+		      ;; Color
+		      (color
+		       `(rudel-obby-parse-color ,var))
+		      ;; Document Id
+		      (document-id
+		       `(mapcar
+			 (lambda (string)
+			   (string-to-number string 16))
+			 (split-string ,var " " t)))
+		      ;; Coding System
+		      (coding-system
+		       `(rudel-get-coding-system (downcase ,var)))))))
+	  specs)))
+    `(let (,@bindings)
+       ,@forms))
+  )
+
+(provide 'rudel-obby-util)
+;;; rudel-obby-util.el ends here
diff --git a/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby.el.svn-base b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby.el.svn-base
new file mode 100644
index 0000000..a09c0d3
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/.svn/text-base/rudel-obby.el.svn-base
@@ -0,0 +1,488 @@
+;;; rudel-obby.el --- An obby backend for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, implementation
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a Rudel protocol backend, which implements the
+;; obby protocol (used by the Gobby collaborative editor until version
+;; 0.5).
+
+
+;;; History:
+;;
+;; 0.2 - Refactored client and server to employ state machine.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel)
+(require 'rudel-backend)
+(require 'rudel-protocol)
+(require 'rudel-util)
+(require 'rudel-icons)
+(require 'rudel-compat) ;; for `read-color' replacement
+
+
+;;; Constants
+;;
+
+(defconst rudel-obby-version '(0 2)
+  "Version of the obby backend for Rudel.")
+
+(defconst rudel-obby-protocol-version 8
+  "Version of the obby protocol this library understands.")
+
+(defvar rudel-obby-long-message-threshold 32768
+  "Threshold for message size, above which messages are sent in
+multiple chunks.")
+
+(defvar rudel-obby-long-message-chunk-size 16384
+  "Chunk size used, when chunking long messages.")
+
+
+;;; Class rudel-obby-backend
+;;
+
+;;;###autoload
+(defclass rudel-obby-backend (rudel-protocol-backend)
+  ((capabilities :initform '(join host
+			     change-color
+			     track-subscriptions)))
+  "Main class of the Rudel obby backend. Creates obby client
+connections and creates obby servers.")
+
+(defmethod initialize-instance ((this rudel-obby-backend) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-obby-version))
+
+(defmethod rudel-ask-connect-info ((this rudel-obby-backend) &optional info)
+  "Ask user for the information required to connect to an obby server."
+  ;; Read server host and port.
+  (let ((host            (or (and info (plist-get info :host))
+			     (read-string "Server: ")))
+	(port            (or (and info (plist-get info :port))
+			     (read-number "Port: " 6522)))
+	;; Read desired username and color
+	(username        (or (and info (plist-get info :username))
+			     (read-string "Username: " user-login-name)))
+	(color           (or (and info (plist-get info :color))
+			     (read-color  "Color: " t)))
+	(encryption      (if (and info (member :encryption info))
+			     (plist-get info :encryption)
+			   (y-or-n-p "Use encryption? ")))
+	(global-password (if (and info (member :global-password info))
+			     (plist-get info :global-password)
+			   (read-string "Global password: " "")))
+	(user-password   (if (and info (member :user-password info))
+			     (plist-get info :user-password)
+			   (read-string "User password: " ""))))
+    (append (list :host            host
+		  :port            port
+		  :username        username
+		  :color           color
+		  :encryption      encryption
+		  :global-password (unless (string= global-password "")
+				     global-password)
+		  :user-password   (unless (string= user-password "")
+				     user-password))
+	    info))
+  )
+
+(defmethod rudel-connect ((this rudel-obby-backend) info)
+  "Connect to an obby server using the information INFO.
+Return the connection object."
+  ;; Before we start, load the client functionality.
+  (require 'rudel-obby-client)
+
+  ;; Create the network process
+  (let* ((session    (plist-get info :session))
+	 (host       (plist-get info :host))
+	 (port       (plist-get info :port))
+	 (encryption (plist-get info :encryption))
+	 ;; Create the network process
+	 (socket     (funcall
+		      (if encryption
+			  (progn
+			    (require 'rudel-tls)
+			    #'rudel-tls-make-process)
+			#'make-network-process)
+		      :name     host
+		      :host     host
+		      :service  port
+		      ;; Install connection filter to redirect data to
+		      ;; the connection object
+		      :filter   #'rudel-filter-dispatch
+		      ;; Install connection sentinel to redirect state
+		      ;; changes to the connection object
+		      :sentinel #'rudel-sentinel-dispatch
+		      ;; Do not start receiving immediately since the
+		      ;; filter function is not yet setup properly.
+		      :stop     t))
+	 (connection (rudel-obby-connection
+		      host
+		      :session session
+		      :socket  socket
+		      :info    info)))
+
+    ;; Now start receiving and wait until the basic session setup is
+    ;; complete.
+    (continue-process socket)
+
+    ;; Wait for the connection to reach one of the states idle,
+    ;; join-failed and they-finalized.
+    (condition-case error
+	(lexical-let ((reporter (make-progress-reporter "Joining ")))
+	  (flet ((display-progress (state)
+	           (cond
+		    ;; For all states, just spin.
+		    ((consp state)
+		     (progress-reporter-force-update
+                      reporter nil (format "Joining (%s)" (car state))))
+
+		    ;; Done
+		    (t
+		     (progress-reporter-force-update reporter nil "Joining ")
+		     (progress-reporter-done reporter)))))
+
+	    (rudel-state-wait connection
+			      '(idle) '(join-failed they-finalized)
+			      #'display-progress)))
+
+      (rudel-entered-error-state
+       (destructuring-bind (symbol . state) (cdr error)
+	 (if (eq (rudel-find-state connection 'join-failed) state)
+	     (with-slots (error-symbol error-data) state
+	       (signal 'rudel-join-error
+		       (append (list error-symbol) error-data)))
+	   (signal 'rudel-join-error nil)))))
+
+    ;; The connection is now usable; return it.
+    connection)
+  )
+
+(defmethod rudel-ask-host-info ((this rudel-obby-backend))
+  "Ask user for information required to host an obby session."
+  (let ((port (read-number "Port: " 6522)))
+    (list :port port)))
+
+(defmethod rudel-host ((this rudel-obby-backend) info)
+  "Host an obby session using the information INFO.
+Return the created server."
+  ;; Before we start, we load the server functionality.
+  (require 'rudel-obby-server)
+
+  ;; Create the network process.
+  (let* ((port   (plist-get info :port))
+	 ;; Make a server socket
+	 (socket (make-network-process
+		  :name     "obby-server"
+		  :host     "0.0.0.0"
+		  :service  port
+		  :server   t
+		  :filter   #'rudel-filter-dispatch
+		  :sentinel #'rudel-sentinel-dispatch
+		  ;;
+		  :log
+		  (lambda (server-process client-process message)
+		    (let ((server (rudel-process-object server-process)))
+		      (rudel-add-client server client-process)))))
+	 ;; Construct server object.
+	 (server (rudel-obby-server "obby-server"
+				    :backend this
+				    :socket  socket)))
+
+    ;; Return the constructed server.
+    server)
+  )
+
+(defmethod rudel-make-document ((this rudel-obby-backend)
+				name session)
+  "Make a new document in SESSION named NAME.
+Return the new document."
+  ;; Find an unused document id and create a document with that id.
+  (let ((id (rudel-available-document-id this session)))
+    (with-slots (user-id) (oref session :self)
+      (rudel-obby-document name
+			   :session  session
+			   :id       id
+			   :owner-id user-id
+			   :suffix   1)))
+  )
+
+(defmethod rudel-available-document-id ((this rudel-obby-backend)
+					session)
+  "Return a document id, which is not in use in SESSION."
+  ;; Look through some candidates until an unused id is hit.
+  (let* ((used-ids (with-slots (documents) session
+		     (mapcar 'rudel-id documents)))
+	 (test-ids (number-sequence 0 (length used-ids))))
+    (car (sort (set-difference test-ids used-ids) '<)))
+  )
+
+
+;;; Class rudel-obby-user
+;;
+
+(defclass rudel-obby-user (rudel-user)
+  ((client-id  :initarg  :client-id
+	       :type     (or null integer) ;; We allow nil instead of making
+	       :accessor rudel-client-id   ;; the slot unbound, to be able to
+	       :initform nil               ;; search with test `rudel-client-id
+	       :documentation              ;; without headaches
+	       "Id of the client connection, which the user used to log in.
+The value is an integer, if the user is connected, and nil
+otherwise.")
+   (user-id    :initarg  :user-id
+	       :type     integer
+	       :accessor rudel-id
+	       :documentation
+	       "")
+   (connected  :initarg  :connected
+	       :type     boolean
+	       :accessor rudel-connected
+	       :documentation
+	       "")
+   (encryption :initarg  :encryption ;; TODO maybe we should use unbound when the user is not connected
+	       :type     boolean
+	       :documentation
+	       ""))
+  "Class rudel-obby-user ")
+
+(defmethod eieio-speedbar-description ((this rudel-obby-user))
+  "Provide a speedbar description for THIS."
+  (let ((connected  (oref this :connected))
+	(encryption (if (slot-boundp this :encryption)
+			(oref this :encryption)
+		      nil)))
+    (format "User %s (%s, %s)" (object-name-string this)
+	    (if connected  "Online" "Offline")
+	    (if encryption "Encryption" "Plain")))
+  )
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-obby-user))
+  "Return a string to use as a speedbar button for THIS."
+  (rudel-display-string this))
+
+(defmethod rudel-display-string ((this rudel-obby-user)
+				 &optional use-images align)
+  "Return a textual representation of THIS for user interface stuff."
+  (with-slots (connected color) this
+    (let ((encryption  (and (slot-boundp this :encryption)
+			    (oref this :encryption)))
+	  (name-string (call-next-method)))
+      (concat
+       ;; Name bit
+       (cond
+	((numberp align) (format (format "%-%ds" align) name-string))
+	((eq align t)    (format "%-12s" name-string))
+	(t		name-string))
+
+       ;; Connection status bit
+       (apply
+	#'propertize
+	(if connected "c" "-")
+	'help-echo (format (if connected
+			       "%s is connected"
+			     "%s is not connected")
+			   name-string)
+	'face      (list :background color)
+	(when use-images
+	  (list 'display (if connected
+			     rudel-icon-connected
+			   rudel-icon-disconnected))))
+
+       ;; Encryption bit
+       (apply
+	#'propertize
+	(if encryption "e" "-")
+	'help-echo (format (if encryption
+			       "%s's connection is encrypted"
+			     "%s's connection is not encrypted")
+			   name-string)
+	'face      (list :background color)
+	(when use-images
+	  (list 'display (if encryption
+			     rudel-icon-encrypted
+			   rudel-icon-plaintext)))))))
+  )
+
+
+;;; Class rudel-obby-document
+;;
+
+(defclass rudel-obby-document (rudel-document)
+  ((id       :initarg  :id
+	     :type     integer
+	     :accessor rudel-id
+	     :documentation
+	     "The id of this document.
+The id has to be unique only with respect to the other documents
+owned by the owner.")
+   (owner-id :initarg  :owner-id
+	     :type     integer
+	     :documentation
+	     "")
+   (suffix   :initarg  :suffix
+	     :type     integer
+	     :documentation
+	     "A counter used to distinguish identically named
+documents."))
+  "Objects of the class rudel-obby-document represent shared
+documents in obby sessions.")
+
+(defmethod rudel-both-ids ((this rudel-obby-document))
+  "Return a list consisting of document and owner id of THIS document."
+  (with-slots ((doc-id :id) owner-id) this
+    (list owner-id doc-id)))
+
+(defmethod rudel-unique-name ((this rudel-obby-document))
+  "Generate a unique name for THIS based on the name and the suffix."
+  (with-slots (suffix) this
+    (concat (when (next-method-p)
+	      (call-next-method))
+	    (when (> suffix 1)
+	      (format "<%d>" suffix))))
+  )
+
+(defmethod eieio-speedbar-description ((this rudel-obby-document))
+  "Construct a description for from the name of document object THIS."
+  (format "Document %s" (object-name-string this)))
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-obby-document))
+  "Return a string to use as a speedbar button for OBJECT."
+  (with-slots (subscribed) this
+    (format "%-12s %s" (object-name-string this)
+	    (if subscribed "s" "-")))
+  )
+
+
+;;; Obby message functions
+;;
+
+(defun rudel-obby-replace-in-string (string replacements)
+  "Replace elements of REPLACEMENTS in STRING.
+REPLACEMENTS is a list of conses whose car is the pattern and
+whose cdr is the replacement for the pattern."
+  (let ((result string))
+    (dolist (replacement replacements)
+      (let ((from (car replacement))
+	    (to   (cdr replacement)))
+	(setq result (replace-regexp-in-string
+		      from to result nil t))))
+    result)
+  )
+
+(defun rudel-obby-escape-string (string)
+  "Replace meta characters in STRING with their escape sequences."
+  (rudel-obby-replace-in-string
+   string
+   '(("\\\\" . "\\b") ("\n" . "\\n") (":" . "\\d")))
+  )
+
+(defun rudel-obby-unescape-string (string)
+  "Replace escaped versions of obby meta characters in STRING with the actual meta characters."
+  (rudel-obby-replace-in-string
+   string
+   '(("\\\\n" . "\n") ("\\\\d" . ":") ("\\\\b" . "\\")))
+  )
+
+(defun rudel-obby-parse-color (color)
+  "Parse the obby color string COLOR into an Emacs color."
+  (let* ((color-numeric (string-to-number color 16))
+	 (color-string  (format "#%04X%04X%04X"
+				(lsh (logand #xff0000 color-numeric) -08)
+				(lsh (logand #x00ff00 color-numeric) -00)
+				(lsh (logand #x0000ff color-numeric)  08))))
+    color-string)
+  )
+
+(defun rudel-obby-format-color (color)
+  "Format the Emacs color COLOR as obby color string."
+  (multiple-value-bind (red green blue) (color-values color)
+    (format "%02x%02x%02x" (lsh red -8) (lsh green -8) (lsh blue -8))))
+
+(defun rudel-obby-assemble-message (name &rest arguments)
+  ""
+  (concat (mapconcat
+	   (lambda (part)
+	     (if (and (not (null part)) (stringp part))
+		 (rudel-obby-escape-string part)
+	       part))
+	   (cons name arguments) ":")
+	  "\n")
+  )
+
+(defun rudel-obby-parse-message (message)
+  "Split MESSAGE at `:' and unescape resulting parts.
+
+The terminating `\n' should be removed from MESSAGE before
+calling this function."
+  (mapcar #'rudel-obby-unescape-string (split-string message ":")))
+
+(defun rudel-obby-send (socket name arguments)
+  "Send an obby message NAME with arguments ARGUMENTS through SOCKET."
+  ;; First, assemble the message string.
+  (let ((message (apply #'rudel-obby-assemble-message
+			name arguments)))
+    (if (>= (length message) rudel-obby-long-message-threshold)
+	;; For huge messages, chunk the message data and transmit the
+	;; chunks
+	(let ((total    (/ (length message)
+			   rudel-obby-long-message-chunk-size))
+	      (current  0)
+	      (reporter (make-progress-reporter "Sending data " 0.0 1.0)))
+	  (rudel-loop-chunks message chunk rudel-obby-long-message-chunk-size
+	    (progress-reporter-update reporter (/ (float current) total))
+	    (process-send-string socket chunk)
+	    (incf current))
+	  (progress-reporter-done reporter))
+      ;; Send small messages in one chunk
+      (process-send-string socket message)))
+  )
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'protocol)
+		   'obby 'rudel-obby-backend)
+
+;;;###autoload
+(eval-after-load 'rudel-zeroconf
+  '(rudel-zeroconf-register-service "_lobby._tcp" 'obby))
+
+(provide 'rudel-obby)
+;;; rudel-obby.el ends here
diff --git a/emacs.d/lisp/rudel/obby/Project.ede b/emacs.d/lisp/rudel/obby/Project.ede
new file mode 100644
index 0000000..53d2422
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/Project.ede
@@ -0,0 +1,14 @@
+;; Object rudel/obby
+;; EDE project file.
+(ede-proj-project "rudel/obby"
+  :name "obby"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp "obby"
+    :name "obby"
+    :path ""
+    :source '("rudel-obby.el" "rudel-obby-util.el" "rudel-obby-client.el" "rudel-obby-server.el" "rudel-obby-errors.el" "rudel-obby-state.el")
+    :aux-packages '("rudel" "jupiter")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/obby/rudel-obby-client.el b/emacs.d/lisp/rudel/obby/rudel-obby-client.el
new file mode 100644
index 0000000..5c192db
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/rudel-obby-client.el
@@ -0,0 +1,973 @@
+;;; rudel-obby-client.el --- Client functions of the Rudel obby backend
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, client
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the client part of the obby backend.
+
+
+;;; History:
+;;
+;; 0.2 - State machine.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'jupiter)
+
+(require 'rudel-state-machine)
+(require 'rudel-operations)
+(require 'rudel-chat)
+
+(require 'rudel-obby-errors)
+(require 'rudel-obby-util)
+(require 'rudel-obby-state)
+
+
+;;; Class rudel-obby-client-state-new
+;;
+
+(defclass rudel-obby-client-state-new
+  (rudel-obby-client-connection-state)
+  ()
+  "Start state of newly established connections.")
+
+(defmethod rudel-obby/obby_welcome
+  ((this rudel-obby-client-state-new) version)
+  "Handle obby 'welcome' message."
+  ;; Examine announced protocol version.
+  (with-parsed-arguments ((version number))
+    (message "Received Obby welcome message (version %d)" version))
+  ;; Start encryption handshake
+  'encryption-negotiate)
+
+
+;;; Class rudel-obby-client-state-encryption-negotiate
+;;
+
+(defclass rudel-obby-client-state-encryption-negotiate
+  (rudel-obby-client-connection-state)
+  ()
+  "Start state of the encryption handshake.")
+
+(defmethod rudel-obby/net6_encryption
+  ((this rudel-obby-client-state-encryption-negotiate) value)
+  "Handle net6 'encryption' message."
+  (rudel-send this "net6_encryption_ok")
+  'encryption-start)
+
+
+;;; Class rudel-obby-client-connection-encryption-start
+;;
+
+(defclass rudel-obby-client-state-encryption-start
+  (rudel-obby-client-connection-state)
+  ()
+  "Second state of the encryption handshake.")
+
+(defmethod rudel-obby/net6_encryption_begin
+  ((this rudel-obby-client-state-encryption-start))
+  "Handle net6 'encryption_begin' message."
+  ;; Start TLS encryption for the connection.
+  (with-slots (connection) this
+    (with-slots (socket) connection
+      (when (rudel-process-object socket :supports-tls)
+	(rudel-tls-start-tls socket)
+	(sit-for 1))))
+
+  ;; The connection is now established
+  'joining)
+
+(defmethod rudel-obby/net6_encryption_failed
+  ((this rudel-obby-client-state-encryption-start))
+  "Handle net6 'encryption_failed' message."
+  ;; The connection is now established; without encryption though
+  'joining)
+
+
+;;; Class rudel-obby-client-state-joining
+;;
+
+(defclass rudel-obby-client-state-joining
+  (rudel-obby-client-connection-state)
+  ()
+  "First state after the connection has been properly set up.")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-joining))
+  "When entering this state, send a login request."
+  ;; Send login request with username and color. This can easily fail
+  ;; (resulting in response 'net6_login_failed') if the username or
+  ;; color is already taken.
+  (with-slots (info) (oref this connection)
+    (let ((username        (plist-get info :username))
+	  (color           (plist-get info :color))
+	  (global-password (plist-get info :global-password))
+	  (user-password   (plist-get info :user-password)))
+      (apply #'rudel-send
+	     this
+	     "net6_client_login"
+	     username (rudel-obby-format-color color)
+	     (append (when global-password
+		       (list global-password))
+		     (when (and global-password user-password)
+		       (list user-password))))))
+  nil)
+
+(defmethod rudel-obby/obby_sync_init
+  ((this rudel-obby-client-state-joining) count)
+  "Handle obby 'sync_init' message."
+  ;; Switch to 'synching' state, passing the number of synchronization
+  ;; items.
+  (with-parsed-arguments ((count number))
+    (list 'session-synching count)))
+
+(defmethod rudel-obby/net6_login_failed
+  ((this rudel-obby-client-state-joining) reason)
+  "Handle net6 'login_failed' message."
+  (with-parsed-arguments ((reason number))
+    (with-slots (connection) this
+      (let ((error-data
+	     (cond
+	      ;; Invalid username
+	      ((= reason rudel-obby-error-username-invalid)
+	       (cons 'rudel-obby-username-invalid nil))
+	      ;; Username in use
+	      ((= reason rudel-obby-error-username-in-use)
+	       (cons 'rudel-obby-username-in-use nil))
+	      ;; Color in use
+	      ((= reason rudel-obby-error-color-in-use)
+	       (cons 'rudel-obby-color-in-use nil))
+	      ;; Wrong global password
+	      ((= reason rudel-obby-error-wrong-global-password)
+	       (cons 'rudel-obby-wrong-global-password nil))
+	      ;; Wrong user password
+	      ((= reason rudel-obby-error-wrong-user-password)
+	       (cons 'rudel-obby-wrong-user-password nil))
+	      ;; Otherwise, signal a generic join error
+	      (t (cons 'rudel-join-error nil)))))
+
+	;; Switch to 'join-failed' state, pass the error data.
+	(list 'join-failed error-data))))
+  )
+
+
+;;; Class rudel-obby-client-state-join-failed
+;;
+
+(defclass rudel-obby-client-state-join-failed
+  (rudel-obby-client-connection-state)
+  ((error-symbol :initarg :error-symbol
+		 :type    symbol
+		 :documentation
+		 "Error symbol describing the reason for the
+login failure.")
+   (error-data   :initarg :error-data
+		 :type    list
+		 :documentation
+		 "Additional error data describing the login
+failure."))
+  "State for failed login attempts.")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-join-failed)
+			error)
+  "When the state is entered, store the error data passed in ERROR."
+  (with-slots (error-symbol error-data) this
+    (setq error-symbol (car error)
+	  error-data   (cdr error)))
+  nil)
+
+
+;;; Class rudel-obby-client-state idle
+;;
+
+(defclass rudel-obby-client-state-idle
+  (rudel-obby-client-connection-state
+   rudel-obby-document-handler)
+  ()
+  "Default state of the connection.")
+
+(defmethod rudel-obby/net6_client_join
+  ((this rudel-obby-client-state-idle)
+   client-id name encryption user-id color)
+  "Handle net6 'client_join' message."
+  (with-parsed-arguments ((client-id number)
+			  (user-id   number)
+			  (color     color))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'eq #'rudel-id)))
+	  (if user
+	      ;; If we have such a user object, update its state.
+	      (with-slots ((client-id1  client-id)
+			   (color1      color)
+			   connected
+			   (encryption1 encryption)) user
+		(setq client-id1  client-id
+		      color1      color
+		      connected   t
+		      encryption1 (string= encryption "1"))
+
+		;; Run the change hook of the user object.
+		(object-run-hook-with-args user 'change-hook))
+	    ;; Otherwise, create a new user object.
+	    (let ((user (rudel-obby-user
+			 name
+			 :client-id  client-id
+			 :user-id    user-id
+			 :connected  t
+			 :encryption (string= encryption "1")
+			 :color      color)))
+	      (rudel-add-user session user))))))
+    (message "Client joined: %s %s" name color))
+  nil)
+
+(defmethod rudel-obby/net6_client_part
+  ((this rudel-obby-client-state-idle) client-id)
+  "Handle net6 'client_part' message."
+  ;; Find the user object, associated to the client id. Remove the
+  ;; client id and change the user's state to disconnected.
+  (with-parsed-arguments ((client-id number))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session client-id
+				     #'eql #'rudel-client-id)))
+	  (if user
+	      (with-slots (client-id connected) user
+		;; Set slot values.
+		(setq client-id nil
+		      connected nil)
+
+		;; Run the change hook of the user object.
+		(object-run-hook-with-args user 'change-hook))
+	    (display-warning
+	     '(rudel obby)
+	     (format "Cannot find user for client id: %d"
+		     client-id)
+	     :warning))))))
+  nil)
+
+(defmethod rudel-obby/obby_user_colour
+  ((this rudel-obby-client-state-idle) user-id color)
+  "Handle obby 'user_colour' message."
+  (with-parsed-arguments ((user-id number)
+			  (color   color))
+    ;; Find user object and set color.
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+	  (with-slots ((name :object-name) (color1 :color)) user
+	    ;; Set color in user object.
+	    (setq color1 color)
+
+	    ;; Run the change hook of the user object.
+	    (object-run-hook-with-args user 'change-hook)
+
+	    ;; Update overlays.
+	    (rudel-overlay-set-face-attributes
+	     (rudel-overlay-make-face-symbol 'author name)
+	     color1))))))
+  nil)
+
+(defmethod rudel-obby/obby_document_create
+  ((this rudel-obby-client-state-idle)
+   owner-id doc-id name suffix encoding)
+  "Handle obby 'document_create' message."
+  (with-parsed-arguments ((owner-id number)
+			  (doc-id   number)
+			  (suffix   number)
+			  (encoding coding-system))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((owner (rudel-find-user session owner-id
+				      #'= #'rudel-id)))
+	  (rudel-add-document session (rudel-obby-document
+				       name
+				       :subscribed (list owner)
+				       :id         doc-id
+				       :owner-id   owner-id
+				       :suffix     suffix))))
+      (message "New document: %s" name)))
+  nil)
+
+(defmethod rudel-obby/obby_document_remove
+  ((this rudel-obby-client-state-idle) doc-id)
+  "Handle obby 'document_remove' message."
+  (with-parsed-arguments ((doc-id document-id))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((document (rudel-find-document
+			 session doc-id
+			 #'equal #'rudel-both-ids)))
+	  (if document
+	      (progn
+		(rudel-remove-document session document)
+		(with-slots ((name :object-name)) document
+		  (message "Document removed: %s" name)))
+	    (display-warning
+	     '(rudel obby)
+	     (format "Document not found: %s" doc-id)
+	     :warning))))))
+  nil)
+
+(defmethod rudel-obby/obby_document/rename
+  ((this rudel-obby-client-state-idle)
+   document user new-name new-suffix)
+  "Handle obby 'rename' submessage of the 'obby_document' message."
+  (with-parsed-arguments ((new-suffix number))
+    (with-slots ((name :object-name) suffix) document
+      (setq name   new-name
+	    suffix new-suffix)))
+  nil)
+
+(defmethod rudel-obby/obby_document/subscribe
+  ((this rudel-obby-client-state-idle)
+   document user-id)
+  "Handle 'subscribe' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id number))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+	  (rudel-add-user document user)))))
+  nil)
+
+(defmethod rudel-obby/obby_document/unsubscribe
+  ((this rudel-obby-client-state-idle)
+   document user-id)
+  "Handle 'unsubscribe' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id number))
+    (with-slots (connection) this
+      (with-slots (session) connection
+	(let ((user (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+	  (rudel-remove-user document user)))))
+  nil)
+
+(defmethod rudel-obby/obby_document/record
+  ((this rudel-obby-client-state-idle)
+   document user-id local-revision remote-revision
+   action &rest arguments)
+  "Handle 'record' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id         number)
+			  (local-revision  number)
+			  (remote-revision number))
+    ;; Locate the user.
+    (let ((user (with-slots (connection) this
+		  (with-slots (session) connection
+		    (rudel-find-user session user-id
+				     #'= #'rudel-id)))))
+      (if user
+	  (condition-case error
+	      ;; Try to dispatch
+	      (rudel-dispatch
+	       this "rudel-obby/obby_document/record/" action
+	       (append (list document user local-revision remote-revision)
+		       arguments))
+	    ;; Warn if we failed to locate or execute the
+	    ;; method. Return nil in this case, so we remain in the
+	    ;; current state.
+	    (rudel-dispatch-error
+	     (progn
+	       (display-warning
+		'(rudel obby)
+		(format "%s: no method (%s: %s): `%s:%s'; arguments: %s"
+			(object-print this) (car error) (cdr error)
+			"rudel-obby/obby_document/record/" action arguments)
+		:debug)
+		nil)))
+	;; If we did not find the user, warn.
+	(progn
+	  (display-warning
+	   '(rudel obby)
+	   (format "User not found: %d" user-id)
+	   :warning)
+	  nil))))
+  )
+
+(defmethod rudel-obby/obby_document/record/ins
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision
+   position data)
+  "Handle 'ins' submessage of 'record' submessage of obby 'document' message."
+  (with-parsed-arguments ((position number))
+    (let ((operation (jupiter-insert
+		      (format "insert-%d-%d"
+			      remote-revision local-revision)
+		      :from position
+		      :data data)))
+      (with-slots (connection) this
+	(rudel-remote-operation connection
+				document user
+				remote-revision local-revision
+				operation))))
+  nil)
+
+(defmethod rudel-obby/obby_document/record/del
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision
+   position length)
+  "Handle 'del' submessage of 'record' submessage of obby 'document' message."
+  (with-parsed-arguments ((position number)
+			  (length   number))
+    (let ((operation (jupiter-delete
+		      (format "delete-%d-%d"
+			      remote-revision local-revision)
+		      :from position
+		      :to   (+ position length))))
+      (with-slots (connection) this
+	(rudel-remote-operation connection
+				document user
+				remote-revision local-revision
+				operation))))
+  nil)
+
+(defmethod rudel-obby/obby_document/record/split
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision
+   &rest operations)
+  "Handle 'split' submessage of 'record' submessage of obby 'document' message."
+  (let ((operation (rudel-message->operation
+		    (cons "split" operations)
+		    local-revision remote-revision)))
+    (with-slots (connection) this
+      (rudel-remote-operation connection
+			      document user
+			      remote-revision local-revision
+			      operation)))
+  nil)
+
+(defmethod rudel-obby/obby_document/record/noop
+  ((this rudel-obby-client-state-idle)
+   document user local-revision remote-revision)
+  "Handle 'noop' submessage of 'record' submessage of obby 'document' message."
+  (let ((operation (jupiter-nop
+		    (format "nop-%d-%d"
+			    remote-revision local-revision))))
+    (with-slots (connection) this
+      (rudel-remote-operation connection
+			      document user
+			      remote-revision local-revision
+			      operation)))
+  nil)
+
+(defmethod rudel-obby/obby_message ((this rudel-obby-client-state-idle)
+				    sender text)
+  "Handle obby 'message' message"
+  (with-parsed-arguments ((sender number))
+    (with-slots (session) (oref this :connection)
+      (let ((sender (rudel-find-user session sender #'eq #'rudel-id)))
+	(rudel-chat-dispatch-message sender text))))
+  nil)
+
+
+;;; Class rudel-obby-client-state-session-synching
+;;
+
+(defclass rudel-obby-client-state-session-synching
+  (rudel-obby-client-connection-state)
+  ((all-items       :initarg  :all-items
+		    :type     (integer 0)
+		    :documentation
+		    "Total number of synchronization items expected
+		    to receive from the server.")
+   (remaining-items :initarg  :remaining-items
+		    :type     (integer 0)
+		    :documentation
+		    "Number of synchronization items not yet
+		    received from the server.")
+   (have-self       :initarg  :have-self
+		    :type     boolean
+		    :documentation
+		    "Flag that remembers, whether the session has
+		    a 'self' user object."))
+  "State used for synching session data.")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-session-synching)
+			num-items)
+  "When entering state, store number of expected items."
+  (with-slots (all-items remaining-items have-self) this
+    (setq all-items       num-items
+	  remaining-items num-items
+	  have-self       nil))
+  nil)
+
+(defmethod rudel-obby/net6_client_join
+  ((this rudel-obby-client-state-session-synching)
+   client-id name encryption user-id color)
+  "Handle net6 'client_join' message."
+  (with-parsed-arguments ((client-id number)
+			  (user-id   number)
+			  (color     color))
+    (with-slots (connection remaining-items have-self) this
+      (with-slots (session) connection
+	;; Construct user object and add it to the session.
+	(let ((user (rudel-obby-user
+		     name
+		     :client-id  client-id
+		     :user-id    user-id
+		     :connected  t
+		     :encryption (string= encryption "1")
+		     :color      color)))
+	  (rudel-add-user session user)
+
+	  ;; The first user object describes the user of this client.
+	  (unless have-self
+	    (with-slots (self) session
+	      (setq self      user
+		    have-self t)))))
+
+      ;; Decrease number of not yet received synchronization items.
+      (decf remaining-items)))
+  nil)
+
+(defmethod rudel-obby/obby_sync_usertable_user
+  ((this rudel-obby-client-state-session-synching) user-id name color)
+  "Handle obby 'sync_usertable_user' message."
+  (with-parsed-arguments ((user-id number)
+			  (color   color))
+    (with-slots (connection remaining-items) this
+      (with-slots (session) connection
+	(rudel-add-user session (rudel-obby-user
+				 name
+				 :user-id    user-id
+				 :connected  nil
+				 :color      color)))
+
+      ;; Decrease number of not yet received synchronization items.
+      (decf remaining-items)))
+  nil)
+
+(defmethod rudel-obby/obby_sync_doclist_document
+  ((this rudel-obby-client-state-session-synching)
+   owner-id doc-id name suffix encoding &rest subscribed-user-ids)
+  "Handle obby 'sync_doclist_document' message."
+  (with-parsed-arguments ((doc-id   number)
+			  (owner-id number)
+			  (suffix   number)
+			  (encoding coding-system))
+    (with-slots (connection remaining-items) this
+      (with-slots (session) connection
+	;; Retrieve the subscribed users
+	(let ((subscribed-users
+	       (mapcar
+		(lambda (user-id)
+		  (with-parsed-arguments ((user-id number))
+		    (rudel-find-user session user-id
+				     #'= #'rudel-id)))
+		subscribed-user-ids)))
+
+	  ;; Make a new document with the list of subscribed users.
+	  (rudel-add-document session (rudel-obby-document
+				       name
+				       :subscribed subscribed-users
+				       :id         doc-id
+				       :owner-id   owner-id
+				       :suffix     suffix))))
+
+      ;; Decrease number of not yet received synchronization items.
+      (decf remaining-items)))
+  nil)
+
+(defmethod rudel-obby/obby_sync_final
+  ((this rudel-obby-client-state-session-synching))
+  "Handle obby 'sync_final' message."
+  'idle)
+
+(defmethod object-print ((this rudel-obby-client-state-session-synching)
+			 &rest strings)
+  "Append number of remaining items to string representation."
+  (with-slots (remaining-items) this
+    (call-next-method this (format " remaining: %d" remaining-items))))
+
+
+;;; Class rudel-obby-client-state-subscribing
+;;
+
+(defclass rudel-obby-client-state-subscribing
+  (rudel-obby-client-connection-state
+   rudel-obby-document-handler)
+  ((document :initarg :document
+	     :type    rudel-obby-document-child
+	     :documentation
+	     ""))
+  "")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-subscribing)
+			user document)
+  "When entering this state, send a subscription request to the server."
+  (with-slots ((document1 :document)) this
+    (setq document1 document)
+
+    (with-slots ((doc-id :id) owner-id) document1
+      (with-slots (user-id) user
+	(rudel-send this "obby_document"
+		    (format "%x %x" owner-id doc-id)
+		    "subscribe"
+		    (format "%x" user-id)))))
+  nil)
+
+(defmethod rudel-obby/obby_document/sync_init
+  ((this rudel-obby-client-state-subscribing)
+   document num-bytes)
+  "Handle obby 'sync_init' message."
+  (with-parsed-arguments ((num-bytes number))
+    (with-slots (documents) this
+      (if (= num-bytes 0)
+	  'idle
+	(list 'document-synching document num-bytes))))
+  )
+
+
+;;; Class rudel-obby-client-state-document-synching
+;;
+
+(defclass rudel-obby-client-state-document-synching
+  (rudel-obby-client-connection-state
+   rudel-obby-document-handler)
+  ((document        :initarg  :document
+		    :type     rudel-obby-document-child
+		    :documentation
+		    "")
+   (all-bytes       :initarg  :all-bytes
+		    :type     (integer 0)
+		    :documentation
+		    "")
+   (remaining-bytes :initarg  :remaining-bytes
+		    :type     (integer 0)
+		    :documentation
+		    ""))
+  "")
+
+(defmethod rudel-enter ((this rudel-obby-client-state-document-synching)
+			document num-bytes)
+  ""
+  (with-slots ((document1 :document) all-bytes remaining-bytes) this
+    (setq document1       document
+	  all-bytes       num-bytes
+	  remaining-bytes num-bytes))
+  nil)
+
+(defmethod rudel-obby/obby_document/sync_chunk
+  ((this rudel-obby-client-state-document-synching)
+   document data user-id)
+  "Handle obby 'sync_chunk' message."
+  (with-parsed-arguments ((user-id number))
+    (with-slots (connection remaining-bytes) this
+      (with-slots (session) connection
+	(let* ((user      (unless (zerop user-id)
+			    (rudel-find-user session user-id
+					     #'= #'rudel-id)))
+	       (operation (rudel-insert-op "bulk-insert"
+					   :from nil
+					   :data data)))
+	  (rudel-remote-operation document user operation)))
+
+      ;; After all bytes are transferred, go back to idle state.
+      (decf remaining-bytes (string-bytes data))
+      (if (= remaining-bytes 0)
+	  'idle
+	nil)))
+  )
+
+(defmethod object-print ((this rudel-obby-client-state-document-synching)
+			 &rest strings)
+  "Append number of remaining items to string representation."
+  (with-slots (remaining-bytes) this
+    (call-next-method this (format " remaining: %d" remaining-bytes))))
+
+
+;;; Class rudel-obby-client-state-they-finalized
+;;
+
+(defclass rudel-obby-client-state-they-finalized
+  (rudel-obby-client-connection-state)
+  ()
+  "State used to indicate that the connection was closed by the peer.")
+
+
+;;; Client connection states.
+;;
+
+(defvar rudel-obby-client-connection-states
+  '((new                  . rudel-obby-client-state-new)
+    (encryption-negotiate . rudel-obby-client-state-encryption-negotiate)
+    (encryption-start     . rudel-obby-client-state-encryption-start)
+    (joining              . rudel-obby-client-state-joining)
+    (join-failed          . rudel-obby-client-state-join-failed)
+    (idle                 . rudel-obby-client-state-idle)
+    (session-synching     . rudel-obby-client-state-session-synching)
+    (subscribing          . rudel-obby-client-state-subscribing)
+    (document-synching    . rudel-obby-client-state-document-synching)
+    (they-finalized       . rudel-obby-client-state-they-finalized))
+  "Name symbols and classes of connection states.")
+
+
+;;; Class rudel-obby-connection
+;;
+
+(defclass rudel-obby-connection (rudel-obby-socket-owner
+				 rudel-connection
+				 rudel-state-machine)
+  ((info     :initarg :info
+	     :type    list
+	     :documentation
+	     "Stores connection information for later use.")
+   (contexts :initarg :contexts
+	     :type    hash-table
+	     :documentation
+	     "Contains jupiter context objects for all
+documents."))
+  "Class rudel-obby-connection ")
+
+(defmethod initialize-instance ((this rudel-obby-connection) &rest slots)
+  ;; Initialize slots of THIS
+  (when (next-method-p)
+    (call-next-method))
+
+  ;; Create a new hash-table object to hold jupiter contexts
+  ;; associated to documents.
+  (with-slots (contexts) this
+    (setq contexts (make-hash-table :test #'equal)))
+
+  ;; Register states.
+  (rudel-register-states this rudel-obby-client-connection-states)
+  )
+
+(defmethod rudel-register-state ((this rudel-obby-connection)
+				 symbol state)
+  "Register SYMBOL and STATE and set connection slot of STATE."
+  ;; Associate THIS connection to STATE.
+  (oset state :connection this)
+
+  ;; Register STATE.
+  (when (next-method-p)
+    (call-next-method))
+  )
+
+(defmethod rudel-disconnect ((this rudel-obby-connection))
+  ""
+  (when (next-method-p)
+    (call-next-method)))
+
+(defmethod rudel-close ((this rudel-obby-connection))
+  ""
+  ;; Move the state machine into an error state.
+  (rudel-switch this 'they-finalized)
+
+  ;; Terminate the session.
+  (with-slots (session) this
+    (rudel-end session)))
+
+(defmethod rudel-find-context ((this rudel-obby-connection) document)
+  "Return the jupiter context associated to DOCUMENT in THIS connection."
+  (with-slots (contexts) this
+    (gethash (oref document :id) contexts)))
+
+(defmethod rudel-add-context ((this rudel-obby-connection) document)
+  "Add a jupiter context for DOCUMENT to THIS connection."
+  (with-slots (contexts) this
+    (with-slots ((doc-name :object-name) (doc-id :id)) document
+      (puthash doc-id
+	       (jupiter-context (format "%s" doc-name))
+	       contexts)))
+  )
+
+(defmethod rudel-remove-context ((this rudel-obby-connection) document)
+  "Remove the jupiter context associated to DOCUMENT from THIS connection."
+  (with-slots (contexts) this
+    (remhash (oref document :id) contexts)))
+
+(defmethod rudel-message ((this rudel-obby-connection) message)
+  "Dispatch MESSAGE to the current state of THIS object.
+If the state has no suitable method, generate a warning, but do
+nothing else."
+  ;; Dispatch message to state.
+  (rudel-accept this message))
+
+(defmethod rudel-change-color- ((this rudel-obby-connection) color)
+  ""
+  (rudel-send this "obby_user_colour"
+	      (rudel-obby-format-color color)))
+
+(defmethod rudel-publish ((this rudel-obby-connection) document)
+  ""
+  ;; Create a new jupiter context for DOCUMENT.
+  (rudel-add-context this document)
+
+  ;; Announce the new document to the server.
+  (with-slots ((name :object-name) id buffer) document
+    (rudel-send this "obby_document_create"
+		(format "%x" id)
+		name
+		"UTF-8"
+		(with-current-buffer buffer
+		  (buffer-string))))
+  )
+
+(defmethod rudel-unpublish ((this rudel-obby-connection) document)
+  "Remove DOCUMENT from the obby session THIS is connected to."
+  ;; Request removal of DOCUMENT.
+  (with-slots ((doc-id :id) owner-id) document
+      (rudel-send this "obby_document_remove"
+		  (format "%x %x" owner-id doc-id)))
+
+  ;; Remove the jupiter context for DOCUMENT.
+  (rudel-remove-context this document)
+  )
+
+(defmethod rudel-subscribe-to ((this rudel-obby-connection) document)
+  ""
+  ;; Create a new jupiter context for DOCUMENT.
+  (rudel-add-context this document)
+
+  ;; Switch to subscribing state and wait until the state goes back to
+  ;; idle.
+  (with-slots (session) this
+    (with-slots (self) session
+      (rudel-switch this 'subscribing self document)))
+
+  (lexical-let ((reporter (make-progress-reporter "Subscribing " 0.0 1.0)))
+    (flet ((display-progress (state)
+	     (cond
+	      ;; Syncing document content, we can provide detailed progress.
+	      ((and (consp state)
+		    (eq (car state) 'document-synching))
+	       (with-slots (all-bytes remaining-bytes) (cdr state)
+		 (progress-reporter-force-update
+		  reporter
+		  (- 1.0 (/ (float remaining-bytes) (float all-bytes)))
+		  (format "Subscribing (%s) " (car state)))))
+
+	      ;; For other states, we just spin.
+	      ((consp state)
+	       (progress-reporter-force-update
+	        reporter 0.5
+	        (format "Subscribing (%s) " (car state))))
+
+	      ;; Done
+	      (t
+	       (progress-reporter-force-update reporter 1.0 "Subscribing ")
+	       (progress-reporter-done reporter)))))
+      (rudel-state-wait this '(idle) '(they-finalized) #'display-progress)))
+
+  ;; We receive a notification of our own subscription from the
+  ;; server. Consequently we do not add SELF to the list of subscribed
+  ;; users of DOCUMENT.
+  )
+
+(defmethod rudel-unsubscribe-from ((this rudel-obby-connection) document)
+  ""
+  ;; Delete the jupiter context for DOCUMENT.
+  (rudel-remove-context this document)
+
+  ;; Announce the end of our subscription to the server.
+  (with-slots (session) this
+    (with-slots (user-id) (oref session :self)
+      (with-slots ((doc-id :id) owner-id) document
+	(rudel-send this "obby_document"
+		    (format "%x %x" owner-id doc-id)
+		    "unsubscribe"
+		    (format "%x" user-id)))))
+
+  ;; We receive a notification of the end of our own subscription from
+  ;; the server. Consequently we do not remove SELF from the list of
+  ;; subscribed users of DOCUMENT.
+  )
+
+(defmethod rudel-local-insert ((this rudel-obby-connection)
+			       document position data)
+  ""
+  (rudel-local-operation
+   this
+   document
+   (jupiter-insert "insert" :from position :data data)))
+
+(defmethod rudel-local-delete ((this rudel-obby-connection)
+			       document position length)
+  ""
+  (rudel-local-operation
+   this
+   document
+   (jupiter-delete "delete" :from position :to (+ position length))))
+
+(defmethod rudel-local-operation ((this rudel-obby-connection)
+				  document operation)
+  "Handle OPERATION performed on DOCUMENT by sending a message through THIS connection."
+  ;; Convert character positions in OPERATION to byte positions, since
+  ;; the obby protocol works with byte positions, but Emacs uses
+  ;; character positions.
+  (with-slots (buffer) document
+    (rudel-obby-char->byte operation buffer))
+
+  ;; Find jupiter context for DOCUMENT.
+  (let ((context (rudel-find-context this document)))
+
+    ;; Notify the server of the operation.
+    (with-slots (owner-id (doc-id :id)) document
+      (with-slots (local-revision remote-revision) context
+	(apply #'rudel-send
+	       this
+	       "obby_document"
+	       (format "%x %x" owner-id doc-id)
+	       "record"
+	       (format "%x" local-revision)
+	       (format "%x" remote-revision)
+	       (rudel-operation->message operation))))
+
+      ;; Submit the operation to the jupiter context.
+      (jupiter-local-operation context operation))
+  )
+
+(defmethod rudel-remote-operation ((this rudel-obby-connection)
+				   document user
+				   remote-revision local-revision
+				   operation)
+  "Handle OPERATION received through THIS connection performed by USER on DOCUMENT."
+  (let* (;; Find jupiter context for DOCUMENT.
+	 (context     (rudel-find-context this document))
+	 ;; And transform the operation.
+	 (transformed (jupiter-remote-operation
+		       context
+		       remote-revision local-revision
+		       operation)))
+
+    ;; Convert byte positions in OPERATION to character positions,
+    ;; since the obby protocol works with byte positions, but Emacs
+    ;; uses character positions.
+    (with-slots (buffer) document
+      (rudel-obby-byte->char transformed buffer))  ;; TODO operation's responsibility?
+
+    ;; Apply the transformed operation to the document.
+    (rudel-remote-operation document user transformed))
+  )
+
+(provide 'rudel-obby-client)
+;;; rudel-obby-client.el ends here
diff --git a/emacs.d/lisp/rudel/obby/rudel-obby-debug.el b/emacs.d/lisp/rudel/obby/rudel-obby-debug.el
new file mode 100644
index 0000000..8f5f168
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/rudel-obby-debug.el
@@ -0,0 +1,122 @@
+;;; rudel-obby-debug.el --- Debugging functions for obby backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, debugging
+;; X-RCS: $Id:$
+;;
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Debugging functions for the obby backend.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-debug)
+
+(require 'rudel-obby-util)
+
+
+;;; Variables
+;;
+
+(defvar rudel-obby-debug-old-state nil
+  "Saves state of state machines across one function call.")
+
+
+;;; Functions
+;;
+
+(defmethod rudel-send :before ((this rudel-obby-socket-owner)
+			       name &rest arguments)
+  "Print NAME and ARGUMENTS to debug stream."
+  (let ((message (apply #'rudel-obby-assemble-message
+			name arguments)))
+
+    (with-slots (socket) this
+      (rudel-debug-stream-insert
+       (rudel-debug-stream-name socket)
+       :sent
+       (concat  (substring message 0 (min (length message) 100))
+		(when (> (length message) 100)
+		  "..."))
+       (append (list name) arguments))))
+    )
+
+(defmethod rudel-receive :before ((this rudel-obby-socket-owner) data)
+  "Print DATA to debug stream."
+  (with-slots (socket) this
+    (rudel-debug-stream-insert
+     (rudel-debug-stream-name socket)
+     :received
+     (concat (substring data 0 (min (length data) 100))
+	     (when (> (length data) 100)
+	       "..."))))
+  )
+
+(defmethod rudel-message :before ((this rudel-obby-socket-owner)
+				  message)
+  "Print DATA to debug stream."
+  (let ((data (apply #'rudel-obby-assemble-message message)))
+
+    (with-slots (socket) this
+      (rudel-debug-stream-insert
+       (rudel-debug-stream-name socket)
+       :received-processed
+       (concat (substring data 0 (min (length data) 100))
+	       (when (> (length data) 100)
+		 "..."))
+       message)
+      ))
+  )
+
+(defmethod rudel-switch :before ((this rudel-obby-socket-owner)
+				 state &rest arguments)
+  "Store name of STATE for later printing."
+  (with-slots (state) this
+    (setq rudel-obby-debug-old-state
+	  (if state
+	      (object-name-string state)
+	    "#start")))
+  )
+
+(defmethod rudel-switch :after ((this rudel-obby-socket-owner)
+				state &rest arguments)
+  "Print STATE and ARGUMENTS to debug stream."
+  (with-slots (socket state) this
+    (let ((old-state rudel-obby-debug-old-state)
+	  (new-state (object-name-string state)))
+      (unless (string= old-state new-state)
+	(rudel-debug-stream-insert
+	 (rudel-debug-stream-name socket)
+	 :special
+	 (if arguments
+	     (format "%s -> %s %s" old-state new-state arguments)
+	   (format "%s -> %s" old-state new-state))))))
+  )
+
+(provide 'rudel-obby-debug)
+;;; rudel-obby-debug.el ends here
diff --git a/emacs.d/lisp/rudel/obby/rudel-obby-errors.el b/emacs.d/lisp/rudel/obby/rudel-obby-errors.el
new file mode 100644
index 0000000..689d4a8
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/rudel-obby-errors.el
@@ -0,0 +1,65 @@
+;;; rudel-obby-errors.el --- Error data used in the obby Rudel backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, errors
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains definitions of error conditions and numeric
+;; error codes used in the Rudel obby backend.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+
+;;; Obby protocol error codes
+;;
+
+(defconst rudel-obby-error-username-invalid #x0001
+  "Error code for invalid username.")
+
+(defconst rudel-obby-error-username-in-use #x0002
+  "Error code for username already in use.")
+
+(defconst rudel-obby-error-color-in-use #x0100
+  "Error code for color already in use.")
+
+(defconst rudel-obby-error-wrong-global-password #x0101
+  "Error code for wrong global password.")
+
+(defconst rudel-obby-error-wrong-user-password #x0102
+  "Error code for wrong user password.")
+
+(defconst rudel-obby-error-protocol-version-mismatch #x0103
+  "Error code for protocol version mismatch.")
+
+(defconst rudel-obby-error-not-encrypted  #x0104
+  "Error code for not encrypted.")
+
+(provide 'rudel-obby-errors)
+;;; rudel-obby-errors.el ends here
diff --git a/emacs.d/lisp/rudel/obby/rudel-obby-server.el b/emacs.d/lisp/rudel/obby/rudel-obby-server.el
new file mode 100644
index 0000000..5bf1158
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/rudel-obby-server.el
@@ -0,0 +1,798 @@
+;;; rudel-obby-server.el --- Server component of the Rudel obby backend
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, server
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the server part of the obby backend for Rudel.
+;;
+;; It is implemented using one state machine (class
+;; `rudel-obby-client') for each client connection. These state
+;; machines have the following states:
+;;
+;; + new                  `rudel-obby-server-state-new'
+;; + encryption-negotiate `rudel-obby-server-state-encryption-negotiate'
+;; + before-join          `rudel-obby-server-state-before-join'
+;; + idle                 `rudel-obby-server-state-idle'
+
+
+;;; History:
+;;
+;; 0.2 - State machine.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'jupiter)
+
+(require 'rudel-state-machine)
+
+(require 'rudel-obby-errors)
+(require 'rudel-obby-util)
+(require 'rudel-obby-state)
+
+
+;;; Class rudel-obby-server-state-new
+;;
+
+(defclass rudel-obby-server-state-new
+  (rudel-obby-server-connection-state)
+  ()
+  "State in which new connections start out.")
+
+(defmethod rudel-enter ((this rudel-obby-server-state-new))
+  "Sends welcome messages to the client and starts the session
+timeout timer."
+  ;; Send greeting sequence to the client.
+  (rudel-send this
+	      "obby_welcome"
+	      (number-to-string rudel-obby-protocol-version))
+
+  ;; Switch to encryption negotiation state.
+  'encryption-negotiate)
+
+
+;;; Class rudel-obby-server-state-encryption-negotiate
+;;
+
+(defclass rudel-obby-server-state-encryption-negotiate
+  (rudel-obby-server-connection-state)
+  ()
+  "Encryption negotiation state.")
+
+(defmethod rudel-enter ((this rudel-obby-server-state-encryption-negotiate))
+  "Send net6 'encryption' message requesting to not enable encryption."
+  (rudel-send this "net6_encryption" "0")
+  nil)
+
+(defmethod rudel-obby/net6_encryption_ok
+  ((this rudel-obby-server-state-encryption-negotiate))
+  "Handle net6 'encryption_ok' message.
+Even if the client requests an encrypted connection, we cancel
+the negotiation."
+  (rudel-send this "net6_encryption_failed")
+  'before-join)
+
+(defmethod rudel-obby/net6_encryption_failed
+  ((this rudel-obby-server-state-encryption-negotiate))
+  "Handle net6 'encryption_failed' message.
+No action has to be taken, since the client simply proceeds after
+failed encryption negotiation."
+  'before-join)
+
+
+;;; Class rudel-obby-server-state-before-join
+;;
+
+(defclass rudel-obby-server-state-before-join
+  (rudel-obby-server-connection-state)
+  ()
+  "Waiting for client request joining the session.")
+
+(defmethod rudel-obby/net6_client_login
+  ((this rudel-obby-server-state-before-join) username color
+   &optional global-password user-password)
+  "Handle net6 'client_login' message."
+  (with-parsed-arguments ((color color))
+    (with-slots (server
+		 (client-id :id)
+		 user
+		 encryption) (oref this :connection)
+      ;; Make sure USERNAME and COLOR are valid.
+      (let ((error (rudel-check-username-and-color
+		    server username color)))
+	(if error
+	    ;; If USERNAME or COLOR are invalid, send the error code
+	    ;; to the client and stay in the current state.
+	    (progn
+	      (rudel-send this
+			  "net6_login_failed"
+			  (format "%x" error))
+	      nil)
+
+	  ;; Create a user object for this client and add it to the
+	  ;; server.
+	  (setq user (rudel-make-user
+		      server
+		      username client-id color encryption))
+	  (rudel-add-user server user)
+
+	  ;; Broadcast the join event to all clients (including the
+	  ;; new one).
+	  (with-slots ((name :object-name) color (user-id :user-id)) user
+	    (rudel-broadcast this (list 'exclude (oref this :connection))
+			     "net6_client_join"
+			     (format "%x" client-id)
+			     name
+			     "0"
+			     (format "%x" user-id)
+			     (rudel-obby-format-color color)))
+
+	  ;; Get the new client up to date:
+	  ;; - transmit user list
+	  ;;   - connected users
+	  ;;   - disconnected users
+	  ;; - transmit document list
+	  (with-slots (users clients documents) server
+	    ;; Send number of synchronization items: sum of numbers of
+	    ;; offline users and documents.
+	    (let ((number-of-items (+ (length users) (length documents))))
+	      (rudel-send this
+			  "obby_sync_init"
+			  (format "%x" number-of-items)))
+
+	    ;; Transmit list of connected users.
+	    (dolist (client clients)
+	      (with-slots ((client-id :id) user) client
+		(when user
+		  (with-slots ((name    :object-name)
+			       color
+			       (user-id :user-id)) user
+		    (rudel-send this
+				"net6_client_join"
+				(format "%x" client-id)
+				name
+				"0"
+				(format "%x" user-id)
+				(rudel-obby-format-color color))))))
+
+	    ;; Transmit list of disconnected users.
+	    (let ((offline-users (remove-if #'rudel-connected users)))
+	      (dolist (user offline-users)
+		(with-slots ((name :object-name) user-id color) user
+		  (rudel-send this
+			      "obby_sync_usertable_user"
+			      (format "%x" user-id)
+			      name
+			      (rudel-obby-format-color color)))))
+
+	    ;; Transmit document list
+	    (dolist (document documents)
+	      (with-slots ((name      :object-name)
+			   (doc-id    :id)
+			   owner-id
+			   suffix
+			   subscribed) document
+		(apply #'rudel-send
+		       this
+		       "obby_sync_doclist_document"
+		       (format "%x" owner-id)
+		       (format "%x" doc-id)
+		       name
+		       (format "%x" suffix)
+		       "UTF-8"
+		       (mapcar
+			(lambda (user1) ;; TODO we could use `user' here, but there is a bug in cl
+			  (format "%x" (rudel-id user1)))
+			subscribed)))))
+
+	  (rudel-send this "obby_sync_final")
+	  'idle))))
+  )
+
+
+;;; Class rudel-obby-server-state-idle
+;;
+
+(defclass rudel-obby-server-state-idle
+  (rudel-obby-server-connection-state)
+  ()
+  "Idle state of a server connection.
+
+The connection enters this state when all setup work is finished,
+the client has joined the session and no operation is in
+progress. In this state, the connection waits for new messages
+from the client that initiate operations. Simple (which means
+stateless in this case) operations are performed without leaving
+the idle state.")
+
+(defmethod rudel-obby/obby_user_colour
+  ((this rudel-obby-server-state-idle) color-)
+  "Handle obby 'user_colour' message.
+This method is called when the connected user requests a change
+of her color to COLOR."
+  (with-parsed-arguments ((color- color))
+    (with-slots (user) (oref this :connection)
+      (with-slots (color (user-id :user-id)) user
+	;; Set color slot value.
+	(setq color color-)
+
+	;; Run change hook.
+	(object-run-hook-with-args user 'change-hook)
+
+	(rudel-broadcast this (list 'exclude (oref this :connection))
+			 "obby_user_colour"
+			 (format "%x" user-id)
+			 (rudel-obby-format-color color)))))
+  nil)
+
+(defmethod rudel-obby/obby_document_create
+  ((this rudel-obby-server-state-idle)
+   doc-id name encoding content)
+  "Handle obby 'document_create' message."
+  (with-parsed-arguments ((doc-id   number)
+			  (encoding coding-system))
+    (with-slots (user server) (oref this :connection)
+      (with-slots ((user-id :user-id)) user
+	;; Create a (hidden) buffer for the new document.
+	(let* ((buffer         (get-buffer-create
+				(generate-new-buffer-name
+				 (concat " *"  name "*"))))
+	       ;; Create the new document object
+	       (document       (rudel-obby-document
+				name
+				:buffer     buffer
+				:subscribed (list user)
+				:id         doc-id
+				:owner-id   user-id
+				:suffix     1)))
+
+	  ;; Initialize the buffer's content
+	  (with-current-buffer buffer
+	    (insert content))
+
+	  (with-slots (suffix) document
+	    ;; Determine an appropriate suffix to provide an unique
+	    ;; name for the new document.
+	    (while (rudel-find-document server
+					(if (= suffix 1)
+					    name
+					  (format "%s<%d>" name suffix))
+					#'string= #'rudel-unique-name)
+	      (incf suffix))
+
+	    ;; Add the document to the server's document list
+	    (rudel-add-document server document)
+
+	    ;; Maybe notify the creating client of the changed suffix.
+	    (unless (= suffix 1)
+	      (rudel-send this
+			  "obby_document"
+			  (format "%x %x" user-id doc-id)
+			  "rename"
+			  (format "%x" user-id)
+			  name
+			  (format "%x" suffix)))
+
+	    ;; Notify other clients of the new document
+	    (rudel-broadcast this (list 'exclude  (oref this :connection))
+			     "obby_document_create"
+			     (format "%x" user-id)
+			     (format "%x" doc-id)
+			     name
+			     (format "%x" suffix)
+			     (upcase (symbol-name encoding))))
+
+	  ;; Add a jupiter context for (THIS DOCUMENT).
+	  (rudel-add-context server (oref this :connection) document))))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document
+  ((this rudel-obby-server-state-idle) doc-id action &rest arguments)
+  "Handle obby 'document' messages."
+  (with-parsed-arguments ((doc-id document-id))
+    ;; Locate the document based on owner id and document id
+    (let ((document (with-slots (server) (oref this :connection)
+		      (rudel-find-document server doc-id
+					   #'equal #'rudel-both-ids))))
+      (rudel-obby-dispatch this action
+			   (append (list document) arguments)
+			   "rudel-obby/obby_document/")))
+  )
+
+(defmethod rudel-obby/obby_document/subscribe
+  ((this rudel-obby-server-state-idle) document user-id)
+  "Handle 'subscribe' submessage of obby 'document' message."
+  (with-parsed-arguments ((user-id number))
+    (let ((user (with-slots (server) (oref this :connection)
+		  (rudel-find-user server user-id
+				   #'= #'rudel-id))))
+      (with-slots (owner-id (doc-id :id) subscribed buffer) document
+
+	;; Track subscription, handle duplicate subscription requests.
+	(when (memq user subscribed)
+	  (error "User `%s' already subscribed to document `%s'"
+		 (object-name user) (object-name document)))
+	(rudel-add-user document user)
+
+	;; Synchronize the buffer content to the client.
+	(with-current-buffer buffer
+	  ;; Send overall buffer size
+	  (rudel-send this
+		      "obby_document"
+		      (format "%x %x" owner-id doc-id)
+		      "sync_init"
+		      (format "%x" (1- (position-bytes (point-max)))))
+
+	  ;; Send buffer chunks with author ids
+	  (dolist (chunk (rudel-chunks document))
+	    (multiple-value-bind (from to author) chunk
+	      (let ((string (buffer-substring (+ from 1) (+ to 1))))
+		(rudel-send this
+			    "obby_document"
+			    (format "%x %x" owner-id doc-id)
+			    "sync_chunk"
+			    string
+			    (format "%x"
+				    (if author
+					(oref author :user-id)
+				      0)))))))
+
+	;; Notify clients of the new subscription (including our own
+	;; client, who requested the subscription).
+	(with-slots ((user-id :user-id)) user
+	  (rudel-broadcast this nil
+			   "obby_document"
+			   (format "%x %x" owner-id doc-id)
+			   "subscribe"
+			   (format "%x" user-id)))))
+
+    ;; Add a jupiter context for (THIS document).
+    (with-slots (server) (oref this :connection)
+      (rudel-add-context server (oref this :connection) document))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document/unsubscribe
+  ((this rudel-obby-server-state-idle) document user-id)
+  "Handle 'unsubscribe' submessage of 'obby_document' message."
+  (with-parsed-arguments ((user-id number))
+    (let ((user (with-slots (server) (oref this :connection)
+		  (rudel-find-user server user-id
+				   #'= #'rudel-id))))
+      (with-slots (owner-id (doc-id :id) subscribed) document
+
+	;; Track subscription, handle invalid unsubscribe requests
+	(unless (memq user subscribed)
+	  (error "User `%s' not subscribed to document `%s'"
+		 (object-name user) (object-name document)))
+	(rudel-remove-user document user)
+
+	;; Notify clients of the canceled subscription (including our
+	;; own client, who requested being unsubscribed).
+	(with-slots ((user-id :user-id)) user
+	  (rudel-broadcast this nil
+			   "obby_document"
+			   (format "%x %x" owner-id doc-id)
+			   "unsubscribe"
+			   (format "%x" user-id))))
+
+      ;; Remove jupiter context for (THIS DOCUMENT).
+      (with-slots (server) (oref this :connection)
+	(rudel-remove-context server (oref this :connection) document)))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document/record
+  ((this rudel-obby-server-state-idle)
+   document local-revision remote-revision action &rest arguments)
+  "Handle 'record' submessages of 'obby_document' message."
+  (with-parsed-arguments ((local-revision  number)
+			  (remote-revision number))
+    ;; Dispatch to specialized operation handlers.
+    (rudel-obby-dispatch
+     this action
+     (append (list document local-revision remote-revision)
+	     arguments)
+     "rudel-obby/obby_document/record/"))
+  )
+
+(defmethod rudel-obby/obby_document/record/ins
+  ((this rudel-obby-server-state-idle)
+   document local-revision remote-revision position data)
+  "Handle 'ins' submessage of 'record' submessages of 'obby_document' message."
+  (with-parsed-arguments ((position number))
+    ;; Construct the operation object and process it.
+    (rudel-remote-operation
+     (oref this :connection) document
+     remote-revision local-revision
+     (jupiter-insert
+      (format "insert-%d-%d"
+	      remote-revision local-revision)
+      :from position
+      :data data))
+    nil)
+  )
+
+(defmethod rudel-obby/obby_document/record/del
+  ((this rudel-obby-server-state-idle)
+   document local-revision remote-revision position length)
+  "Handle 'del' submessage of 'record' submessages of 'obby_document' message."
+  (with-parsed-arguments ((position number)
+			  (length   number))
+    ;; Construct the operation object and process it.
+    (rudel-remote-operation
+     (oref this :connection) document
+     remote-revision local-revision
+     (jupiter-delete
+      (format "delete-%d-%d"
+	      remote-revision local-revision)
+      :from position
+      :to   (+ position length)))
+    nil)
+  )
+
+
+;;; Client connection states.
+;;
+
+(defvar rudel-obby-server-connection-states
+  '((new                  . rudel-obby-server-state-new)
+    (encryption-negotiate . rudel-obby-server-state-encryption-negotiate)
+    (before-join          . rudel-obby-server-state-before-join)
+    (idle                 . rudel-obby-server-state-idle))
+  "Name symbols and classes of connection states.")
+
+
+;;; Class rudel-obby-client
+;;
+
+(defclass rudel-obby-client (rudel-obby-socket-owner
+			     rudel-state-machine)
+  ((server     :initarg  :server
+	       :type     rudel-obby-server
+	       :documentation
+	       "")
+   (id         :initarg  :id
+	       :type     integer
+	       :accessor rudel-id
+	       :documentation
+	       "")
+   (user       :initarg  :user
+	       :type     (or rudel-obby-user null)
+	       :initform nil
+	       :documentation
+	       "")
+   (encryption :initarg  :encryption
+	       :type     boolean
+	       :documentation
+	       ""))
+  "Each object of this class represents one client, that is
+connected to the server. This object handles all direct
+communication with the client, while broadcast messages are
+handled by the server.")
+
+(defmethod initialize-instance ((this rudel-obby-client) &rest slots)
+  "Initialize slots of THIS and register state machine states."
+  ;; Initialize slots of THIS
+  (when (next-method-p)
+    (call-next-method))
+
+  ;; Register states.
+  (rudel-register-states this rudel-obby-server-connection-states)
+  )
+
+(defmethod rudel-register-state ((this rudel-obby-client) symbol state)
+  "Register SYMBOL and STATE and set connection slot of STATE."
+  ;; Associate THIS connection to STATE.
+  (oset state :connection this)
+
+  ;; Register STATE.
+  (call-next-method))
+
+(defmethod rudel-end ((this rudel-obby-client))
+  ""
+  (rudel-disconnect this))
+
+(defmethod rudel-close ((this rudel-obby-client))
+  ""
+  (with-slots (server) this
+    (rudel-remove-client server this)))
+
+(defmethod rudel-message ((this rudel-obby-client) message)
+  "Dispatch MESSAGE to the active state of THIS state machine."
+  ;; Dispatch message to state
+  (rudel-accept this message))
+
+(defmethod rudel-broadcast ((this rudel-obby-client)
+			    receivers name &rest arguments)
+  "Broadcast message NAME with arguments ARGUMENTS to RECEIVERS."
+  (with-slots (server) this
+    (apply #'rudel-broadcast server receivers name arguments)))
+
+(defmethod rudel-remote-operation ((this rudel-obby-client)
+				   document
+				   local-revision remote-revision
+				   operation)
+  "Execute and relay OPERATION on DOCUMENT."
+  (with-slots (server user) this
+    ;; Transform OPERATION and find clients that need to receive
+    ;; notifications.
+    (let* ((context     (rudel-find-context server this document))
+	   (transformed (jupiter-remote-operation
+			 context
+			 local-revision remote-revision
+			 operation))
+	   (receivers   (rudel-subscribed-clients-not-self
+			 this document)))
+
+      ;; Relay change notification to other clients. We use
+      ;; TRANSFORMED before the byte -> char conversion which is what
+      ;; the receivers expect.
+      (with-slots (user-id) user
+	(with-slots (owner-id (doc-id :id)) document
+	  ;; Construct and send messages to all receivers individually
+	  ;; since the contents of the messages depends on the state
+	  ;; of the jupiter context associated the respective
+	  ;; receiver.
+	  (dolist (receiver receivers)
+
+	    ;; Find the jupiter context for RECEIVER and use its
+	    ;; revision information.
+	    (let ((context (rudel-find-context server receiver document)))
+	      ;; Construct and send one message.
+	      (with-slots (local-revision remote-revision) context
+		(apply #'rudel-send
+		       receiver
+		       "obby_document"
+		       (format "%x %x" owner-id doc-id)
+		       "record"
+		       (format "%x" user-id)
+		       (format "%x" local-revision)
+		       (format "%x" remote-revision)
+		       (rudel-operation->message transformed)))
+
+	      ;; Submit the operation to the jupiter context.
+	      (jupiter-local-operation context transformed)))))
+
+      ;; Incorporate change into DOCUMENT (the server-side
+      ;; document). We have to convert bytes -> chars before we can do
+      ;; this.
+      (with-slots (buffer) document
+	(rudel-obby-byte->char transformed buffer))
+
+      (rudel-remote-operation document user transformed)))
+  )
+
+(defmethod rudel-subscribed-clients-not-self ((this rudel-obby-client)
+					      document)
+  "Return a list of clients subscribed to DOCUMENT excluding THIS."
+  (with-slots (clients) (oref this :server)
+    (with-slots (subscribed) document
+      (remove-if
+       (lambda (client)
+	 (with-slots (user) client
+	   (or (eq client this)
+	       (not (memq user subscribed)))))
+       clients)))
+  )
+
+
+;;; Class rudel-obby-server
+;;
+
+(defclass rudel-obby-server (rudel-server-session
+			     rudel-socket-owner)
+  ((clients        :initarg  :clients
+		   :type     list
+		   :initform nil
+		   :documentation
+		   "")
+   (next-client-id :initarg  :next-client-id
+		   :type     integer
+		   :initform 1
+		   :documentation
+		   "")
+   (next-user-id   :initarg  :next-user-id
+		   :type     integer
+		   :initform 1
+		   :documentation
+		   "")
+   (contexts       :initarg  :contexts
+		   :type     hash-table
+		   :documentation
+		   ""))
+  "Class rudel-obby-server ")
+
+(defmethod initialize-instance ((this rudel-obby-server) &rest slots)
+  ""
+  (when (next-method-p)
+    (call-next-method))
+
+  (with-slots (contexts) this
+    (setq contexts (make-hash-table :test 'equal))))
+
+(defmethod rudel-end ((this rudel-obby-server))
+  ""
+  (rudel-disconnect this))
+
+(defmethod rudel-broadcast ((this rudel-obby-server)
+			    receivers name &rest arguments)
+  "Send a message of type NAME with arguments ARGUMENTS to RECEIVERS.
+
+RECEIVERS can be a object derived from rudel-obby-client, a list
+of such objects or a list with car 'exclude and cdr a list of
+such objects derived from rudel-obby-client."
+  ;; Construct list of receivers.
+  (let ((receiver-list
+	 (cond
+	  ;; If RECEIVERS is nil, the message should be broadcast to
+	  ;; all clients.
+	  ((null receivers) (oref this :clients))
+	  ;; If RECEIVERS is a (non-empty) list of rudel-obby-client
+	  ;; (or derived) objects, treat it as a list of receivers.
+	  ((and (listp receivers)
+		(rudel-obby-client-child-p (car receivers)))
+	   receivers)
+	  ;; If RECEIVERS is a (non-empty) list with cdr equal to
+	  ;; 'exclude treat it as a list of receivers to exclude.
+	  ((and (listp receivers)
+		(eq (car receivers) 'exclude))
+	   (with-slots (clients) this
+	     (set-difference clients (cdr receivers)
+			     :key #'rudel-id)))
+	  ;; If RECEIVERS is a single rudel-obby-client (or derived)
+	  ;; object, send the message to that client.
+	  ((rudel-obby-client-child-p receivers)
+	   (list receivers))
+	  ;;
+	  (t (signal 'wrong-type-argument (type-of receivers))))))
+
+    ;; Send message to receivers.
+    (dolist (receiver receiver-list)
+      (apply #'rudel-send receiver name arguments)))
+  )
+
+(defmethod rudel-make-user ((this rudel-obby-server)
+			    name client-id color encryption)
+  ""
+  (with-slots (next-user-id) this
+    (let ((user (rudel-obby-user name
+                 :color      color
+		 :client-id  client-id
+		 :user-id    next-user-id
+		 :connected  t
+		 :encryption encryption)))
+      (incf next-user-id)
+      user))
+  )
+
+(defmethod rudel-check-username-and-color ((this rudel-obby-server)
+					   username color)
+  "Check whether USERNAME and COLOR are valid.
+USERNAME must not be empty and must not be used by another
+user. COLOR has to be sufficiently different from used colors."
+  (cond
+   ;; The empty user name is not allowed
+   ((string= username "")
+    rudel-obby-error-username-invalid)
+
+   ;; Make sure the user name is not already in use.
+   ((rudel-find-user this username
+		     #'string= #'object-name-string)
+    rudel-obby-error-username-in-use)
+
+   ;; Make sure the color is sufficiently dissimilar to all used
+   ;; colors.
+   ((rudel-find-user this color
+		     (lambda (left right)
+		       (< (color-distance left right) 20000)) ;; TODO constant
+		     #'rudel-color)
+    rudel-obby-error-color-in-use))
+  )
+
+(defmethod rudel-add-client ((this rudel-obby-server)
+			     client-socket)
+  ""
+  (with-slots (next-client-id clients) this
+    (let ((client (rudel-obby-client (process-name client-socket)
+		   :server     this
+		   :socket     client-socket
+		   :id         next-client-id
+		   :encryption nil)))
+      (push client clients))
+    (incf next-client-id))
+  )
+
+(defmethod rudel-remove-client ((this rudel-obby-server)
+				client)
+  ""
+  (with-slots ((client-id :id) user) client
+    ;; Broadcast the part event to all remaining clients.
+    (rudel-broadcast this (list 'exclude client)
+		     "net6_client_part"
+		     (format "%x" client-id))
+
+    ;; If the client has an associated user object, set the status of
+    ;; the user object to offline.
+    (when user
+      ;; Set slot value.
+      (with-slots (connected) user
+	(setq connected nil))
+
+      ;; Run change hook.
+      (object-run-hook-with-args user 'change-hook)))
+
+  (object-remove-from-list this :clients client)
+  )
+
+(defmethod rudel-find-context ((this rudel-obby-server) client document)
+  "Return the jupiter context associated to (CLIENT DOCUMENT) in THIS."
+  (with-slots (contexts) this
+    (gethash (rudel-obby-context-key client document) contexts)))
+
+(defmethod rudel-add-context ((this rudel-obby-server) client document)
+  "Add a jupiter context for (CLIENT DOCUMENT) to THIS."
+  (with-slots (contexts) this
+    (with-slots ((client-id :id)) client
+      (with-slots ((doc-name :object-name)) document
+	(puthash
+	 (rudel-obby-context-key client document)
+	 (jupiter-context (format "%d-%s" client-id doc-name))
+	 contexts))))
+  )
+
+(defmethod rudel-remove-context ((this rudel-obby-server) client document)
+  "Remove the jupiter context associated to (CLIENT DOCUMENT) from THIS."
+  (with-slots (contexts) this
+    (remhash
+     (rudel-obby-context-key client document)
+     contexts)))
+
+(defun rudel-obby-context-key (client document)
+  "Generate hash key based on CLIENT and DOCUMENT."
+  (with-slots ((client-id :id)) client
+    (with-slots ((doc-id :id)) document
+      (list client-id doc-id))))
+
+(defmethod object-print ((this rudel-obby-server) &rest strings)
+  "Print THIS with number of clients."
+  (with-slots (clients) this
+    (apply #'call-next-method
+	   this
+	   (format " clients: %d"
+		   (length clients))
+	   strings))
+  )
+
+(provide 'rudel-obby-server)
+;;; rudel-obby-server.el ends here
diff --git a/emacs.d/lisp/rudel/obby/rudel-obby-state.el b/emacs.d/lisp/rudel/obby/rudel-obby-state.el
new file mode 100644
index 0000000..a190967
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/rudel-obby-state.el
@@ -0,0 +1,169 @@
+;;; rudel-obby-state.el --- Base class for states used in the obby backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, state machine
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a base class for finite state machine states
+;; used in the obby backend.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-util)
+(require 'rudel-state-machine)
+
+(require 'rudel-obby-util)
+
+
+;;; Class rudel-obby-state
+;;
+
+(defclass rudel-obby-state (rudel-state)
+  ((connection :initarg :connection
+	       :type    rudel-obby-socket-owner
+	       :documentation
+	       "Connection object that uses the state."))
+  "Base class for state classes used in the obby backend."
+  :abstract t)
+
+(defmethod rudel-enter ((this rudel-obby-state))
+  "Default behavior is doing nothing when entering a state."
+  nil)
+
+(defmethod rudel-leave ((this rudel-obby-state))
+  "Default behavior is doing nothing when leaving a state.")
+
+(defmethod rudel-accept ((this rudel-obby-state) message)
+  "Dispatch to appropriate handler based on MESSAGE.
+Display a warning if no such handler is found."
+  ;; Try to dispatch to the correct message handler. If there is none,
+  ;; warn.
+  (let ((name      (car message))
+	(arguments (cdr message)))
+    (condition-case error
+	;; Try to dispatch
+	(rudel-dispatch this "rudel-obby/" name arguments)
+      ;; Warn if we failed to locate or execute the method. Return nil
+      ;; in this case, so we remain in the current state.
+      (rudel-dispatch-error
+       (progn
+	 (display-warning
+	  '(rudel obby)
+	  (format "%s: no method (%s: %s): `%s/%s'; arguments: %s"
+		  (object-print this) (car error) (cdr error)
+		  "rudel-obby" name arguments)
+	  :debug)
+	 nil))))
+  )
+
+(defmethod rudel-send ((this rudel-obby-state) &rest args)
+  "Send ARGS through the connection associated with THIS."
+  (with-slots (connection) this
+    (apply #'rudel-send connection args)))
+
+
+;;; Class rudel-obby-client-connection-state
+;;
+
+(defclass rudel-obby-client-connection-state (rudel-obby-state)
+  ()
+  "Base class for state classes used by obby client connections."
+  :abstract t)
+
+(defmethod rudel-obby/net6_ping ((this rudel-obby-client-connection-state))
+  "Handle net6 'ping' message."
+  (rudel-send this "net6_pong")
+  nil)
+
+
+;;; Class rudel-obby-server-connection-state
+;;
+
+(defclass rudel-obby-server-connection-state (rudel-obby-state)
+  ()
+  "Base class for server connection states."
+  :abstract t)
+
+(defmethod rudel-broadcast ((this rudel-obby-server-connection-state)
+			    receivers name &rest arguments)
+  "Broadcast message NAME with arguments ARGUMENTS to RECEIVERS."
+  (with-slots (connection) this
+    (apply #'rudel-broadcast connection receivers name arguments)))
+
+
+;;; Class rudel-obby-document-handler
+;;
+
+(defclass rudel-obby-document-handler ()
+  ()
+  "Mixin class that provides ability to process submessages of
+  obby 'document' messages.")
+
+(defmethod rudel-obby/obby_document
+  ((this rudel-obby-document-handler) doc-id action &rest arguments)
+  "Handle obby 'document' message family."
+  ;; Try to dispatch to the correct message handler. If there is none,
+  ;; warn.
+  (with-parsed-arguments ((doc-id document-id))
+    ;; Locate the document based on owner id and document id.
+    (let ((document (with-slots (connection) this
+		      (with-slots (session) connection
+			(rudel-find-document session doc-id
+					     #'equal #'rudel-both-ids)))))
+      (if document
+	  (condition-case error
+	      ;; Try to dispatch
+	      (rudel-dispatch this "rudel-obby/obby_document/" action
+			      (cons document arguments))
+	    ;; Warn if we failed to locate or execute the
+	    ;; method. Return nil in this case, so we remain in the
+	    ;; current state.
+	    (rudel-dispatch-error
+	     (progn
+	       (display-warning
+		'(rudel obby)
+		(format "%s: no method (%s: %s): `%s:%s'; arguments: %s"
+			(object-print this) (car error) (cdr error)
+			"rudel-obby/obby_document/" action arguments)
+		:debug)
+	       nil)))
+	;; If we did not find the document, warn.
+	(progn
+	  (display-warning
+	   '(rudel obby)
+	   (format "Document not found: %s" doc-id)
+	   :debug)
+	  nil))))
+  )
+
+(provide 'rudel-obby-state)
+;;; rudel-obby-state.el ends here
diff --git a/emacs.d/lisp/rudel/obby/rudel-obby-util.el b/emacs.d/lisp/rudel/obby/rudel-obby-util.el
new file mode 100644
index 0000000..faefe70
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/rudel-obby-util.el
@@ -0,0 +1,314 @@
+;;; rudel-obby-util.el --- Miscellaneous functions for the Rudel obby backend
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, miscellaneous
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;;
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel)
+(require 'rudel-util)
+
+(require 'jupiter)
+
+
+;;; Class rudel-obby-socket-owner
+;;
+
+(defclass rudel-obby-socket-owner (rudel-socket-owner)
+  ((buffer :initarg  :buffer
+	   :type     (or null string)
+	   :initform nil
+	   :documentation
+	   "Stores message fragments until complete messages can
+be assembled."))
+  "This class adds functions for sending and receiving obby
+messages to the base class rudel-socket-owner.")
+
+(defmethod rudel-send ((this rudel-obby-socket-owner)
+		       name &rest arguments)
+  "Send obby message NAME with arguments ARGUMENTS through the socket associated to THIS."
+  (with-slots (socket) this
+    (rudel-obby-send socket name arguments)))
+
+(defmethod rudel-receive ((this rudel-obby-socket-owner) data)
+  "Reassemble lines in DATA received on the socket associated with THIS and call message handler."
+  ;; Assemble fragmented lines.
+  (with-slots (buffer) this
+    (rudel-assemble-line-fragments data buffer))
+
+  ;; Process all available lines.
+  (rudel-loop-lines data line
+    ;; `rudel-message' has to dispatch message to an appropriate
+    ;; handler.
+    (let ((message (rudel-obby-parse-message line)))
+      (rudel-message this message)))
+  )
+
+(defgeneric rudel-message ((this rudel-obby-socket-owner) message)
+  "Called when a message arrives.
+Should be implemented in derived classes.")
+
+
+;;; Message serialization
+;;
+
+(defgeneric rudel-operation->message ((this jupiter-operation))
+  "Generate a list obby message components from THIS operation.")
+
+(defmethod rudel-operation->message ((this jupiter-insert))
+  "Serialize THIS insert operation."
+  (with-slots (from data) this
+    (list "ins" (format "%x" from) data)))
+
+(defmethod rudel-operation->message ((this jupiter-delete))
+  "Serialize THIS delete operation."
+  (with-slots (from length) this
+    (list "del" (format "%x" from) (format "%x" length))))
+
+(defmethod rudel-operation->message ((this jupiter-compound))
+  "Serialize THIS compound operation."
+  (with-slots (children) this
+    (apply #'append
+	   (list "split" )
+	   (mapcar #'rudel-operation->message children))))
+
+(defmethod rudel-operation->message ((this jupiter-nop))
+  "Serialize THIS nop operation."
+  (list "nop"))
+
+(defun rudel-message->operation (message local-revision remote-revision)
+  "Construct an operation object from MESSAGE and LOCAL-REVISION and REMOTE-REVISION.
+LOCAL-REVISION and REMOTE-REVISION are only used in the
+construction of the name of the new operation. "
+  (let ((type (car message)))
+    (cond
+
+     ;; Insert operation
+     ((string= type "ins")
+      (let ((position-numeric (string-to-number (nth 1 message) 16))
+	    (data             (nth 2 message)))
+	(jupiter-insert
+	 (format "insert-%d-%d"
+		 remote-revision local-revision)
+	 :from position-numeric
+	 :data data)))
+
+     ;; Delete operation
+     ((string= type "del")
+      (let ((position-numeric (string-to-number (nth 1 message) 16))
+	    (length-numeric   (string-to-number (nth 2 message) 16)))
+	(jupiter-delete
+	 (format "delete-%d-%d"
+		 remote-revision local-revision)
+	 :from position-numeric
+	 :to   (+ position-numeric length-numeric))))
+
+     ;; Compound operation
+     ((string= type "split")
+      (let* ((rest   (cdr message))
+	     (offset (position-if
+		       (lambda (item)
+			 (member* item '("ins" "del" "nop")
+				  :test #'string=))
+		       rest
+		       :start 1))
+	     (first  (subseq rest 0 offset))
+	     (second (subseq rest offset)))
+	(jupiter-compound
+	 (format "compound-%d-%d"
+		 remote-revision local-revision)
+	 :children
+	 (list (rudel-message->operation
+		first local-revision remote-revision)
+	       (rudel-message->operation
+		second local-revision remote-revision)))))
+
+     ;; No operation
+     ((string= type "nop")
+      (jupiter-nop
+       (format "nop-%d-%d"
+	       remote-revision local-revision)))
+
+     ;; Unknown operation type
+     (t (error "Unknown document record type: `%s'" type))))
+  )
+
+
+;;; Character <-> byte position conversion
+;;
+
+(defgeneric rudel-obby-char->byte ((this jupiter-operation) buffer)
+  "Convert character positions and lengths in THIS to bytes.")
+
+(defmethod rudel-obby-char->byte ((this jupiter-insert) buffer)
+  "Convert character positions and lengths in THIS insert to bytes."
+  (with-slots (from) this
+    (with-current-buffer buffer
+      (setq from (- (position-bytes (+ from 1)) 1)))))
+
+(defmethod rudel-obby-char->byte ((this jupiter-delete) buffer)
+ "Convert character positions and lengths in THIS delete to bytes."
+  (with-slots (from to length) this
+    (let ((old-from (+ from 1))
+	  (old-to   (+ to   1)))
+      (with-current-buffer buffer
+	(destructuring-bind (change-from change-to string)
+	    rudel-buffer-change-workaround-data
+	  (setq from   (- (position-bytes old-from) 1)
+		length (string-bytes
+			(substring string
+				   (- old-from change-from)
+				   (- old-to   change-from))))))))
+  )
+
+(defmethod rudel-obby-char->byte ((this jupiter-compound) buffer)
+  "Convert character positions and lengths in THIS compound to bytes.."
+  (with-slots (children) this
+    (mapc
+     (lambda (child)
+       (rudel-obby-char->byte child buffer))
+     children))
+  )
+
+(defmethod rudel-obby-char->byte ((this jupiter-nop) buffer)
+  "Nothing to convert if THIS is a nop.")
+
+(defgeneric rudel-obby-byte->char ((this jupiter-operation) buffer)
+  "Convert byte positions and lengths in THIS to character positions.")
+
+(defmethod rudel-obby-byte->char ((this jupiter-insert) buffer)
+  "Convert byte positions and lengths in THIS insert to character positions."
+  (with-slots (from) this
+    (with-current-buffer buffer
+      (setq from (- (byte-to-position (+ from 1)) 1)))))
+
+(defmethod rudel-obby-byte->char ((this jupiter-delete) buffer)
+  "Convert byte positions and lengths in THIS delete to character positions."
+  (with-slots (from to length) this
+    (let ((old-from   from)
+	  (old-length length))
+      (with-current-buffer buffer
+	(setq from (- (byte-to-position (+ old-from 1)) 1)
+	      to   (- (byte-to-position (+ old-from old-length 1)) 1)))))
+  )
+
+(defmethod rudel-obby-byte->char ((this jupiter-compound) buffer)
+  "Convert byte positions and lengths in THIS compound to character positions."
+  (with-slots (children) this
+    (mapc
+     (lambda (child)
+       (rudel-obby-byte->char child buffer))
+     children))
+  )
+
+(defmethod rudel-obby-byte->char ((this jupiter-nop) buffer)
+  "Nothing to convert if THIS is a nop.")
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-obby-dispatch (object name arguments &optional prefix)
+  "Call method starting with PREFIX and ending in NAME of OBJECT with ARGUMENTS.
+When PREFIX is not specified, \"rudel-obby/\" is used."
+  ;; Default prefix.
+  (unless prefix
+    (setq prefix "rudel-obby/"))
+
+  ;; Construct a matching symbol.
+  (let ((method (intern-soft (concat prefix name))))
+    ;; If we found a suitable method, run it; Otherwise warn and do
+    ;; nothing.
+    (unless (and method
+		 (condition-case error
+		     ;; Try to call METHOD. If successful, always
+		     ;; return t.
+		     (progn
+		       (apply method object arguments)
+		       t)
+		   ;; Warn only when the condition is
+		   ;; 'no-method-definition' and refers to METHOD,
+		   ;; otherwise continue unwinding.
+		   (no-method-definition
+		    (if (eq method (cadr error))
+			nil
+		      (signal (car error) (cdr error))))))
+      (display-warning
+       '(rudel obby)
+       (format "%s: in context `%s': no method: `%s'; arguments: %s"
+	       (object-name-string object) prefix name arguments)
+       :debug)))
+  )
+
+(defmacro with-parsed-arguments (specs &rest forms)
+  "Execute FORMS with variable bindings according to SPECS.
+SPECS is structured as follows:
+SPECS   ::= (BINDING*)
+BINDING ::= (VAR TYPE)
+VAR is a symbol and TYPE is one of number, color, document-id and
+coding-system."
+  (declare (indent 1)
+	   (debug (listp &rest form)))
+  (let ((bindings
+	 (mapcar
+	  (lambda (spec)
+	    (destructuring-bind (var type) spec
+	      (list var
+		    (case type
+		      ;; Number
+		      (number
+		       `(string-to-number ,var 16))
+		      ;; Color
+		      (color
+		       `(rudel-obby-parse-color ,var))
+		      ;; Document Id
+		      (document-id
+		       `(mapcar
+			 (lambda (string)
+			   (string-to-number string 16))
+			 (split-string ,var " " t)))
+		      ;; Coding System
+		      (coding-system
+		       `(rudel-get-coding-system (downcase ,var)))))))
+	  specs)))
+    `(let (,@bindings)
+       ,@forms))
+  )
+
+(provide 'rudel-obby-util)
+;;; rudel-obby-util.el ends here
diff --git a/emacs.d/lisp/rudel/obby/rudel-obby.el b/emacs.d/lisp/rudel/obby/rudel-obby.el
new file mode 100644
index 0000000..a09c0d3
--- /dev/null
+++ b/emacs.d/lisp/rudel/obby/rudel-obby.el
@@ -0,0 +1,488 @@
+;;; rudel-obby.el --- An obby backend for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, backend, implementation
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a Rudel protocol backend, which implements the
+;; obby protocol (used by the Gobby collaborative editor until version
+;; 0.5).
+
+
+;;; History:
+;;
+;; 0.2 - Refactored client and server to employ state machine.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel)
+(require 'rudel-backend)
+(require 'rudel-protocol)
+(require 'rudel-util)
+(require 'rudel-icons)
+(require 'rudel-compat) ;; for `read-color' replacement
+
+
+;;; Constants
+;;
+
+(defconst rudel-obby-version '(0 2)
+  "Version of the obby backend for Rudel.")
+
+(defconst rudel-obby-protocol-version 8
+  "Version of the obby protocol this library understands.")
+
+(defvar rudel-obby-long-message-threshold 32768
+  "Threshold for message size, above which messages are sent in
+multiple chunks.")
+
+(defvar rudel-obby-long-message-chunk-size 16384
+  "Chunk size used, when chunking long messages.")
+
+
+;;; Class rudel-obby-backend
+;;
+
+;;;###autoload
+(defclass rudel-obby-backend (rudel-protocol-backend)
+  ((capabilities :initform '(join host
+			     change-color
+			     track-subscriptions)))
+  "Main class of the Rudel obby backend. Creates obby client
+connections and creates obby servers.")
+
+(defmethod initialize-instance ((this rudel-obby-backend) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-obby-version))
+
+(defmethod rudel-ask-connect-info ((this rudel-obby-backend) &optional info)
+  "Ask user for the information required to connect to an obby server."
+  ;; Read server host and port.
+  (let ((host            (or (and info (plist-get info :host))
+			     (read-string "Server: ")))
+	(port            (or (and info (plist-get info :port))
+			     (read-number "Port: " 6522)))
+	;; Read desired username and color
+	(username        (or (and info (plist-get info :username))
+			     (read-string "Username: " user-login-name)))
+	(color           (or (and info (plist-get info :color))
+			     (read-color  "Color: " t)))
+	(encryption      (if (and info (member :encryption info))
+			     (plist-get info :encryption)
+			   (y-or-n-p "Use encryption? ")))
+	(global-password (if (and info (member :global-password info))
+			     (plist-get info :global-password)
+			   (read-string "Global password: " "")))
+	(user-password   (if (and info (member :user-password info))
+			     (plist-get info :user-password)
+			   (read-string "User password: " ""))))
+    (append (list :host            host
+		  :port            port
+		  :username        username
+		  :color           color
+		  :encryption      encryption
+		  :global-password (unless (string= global-password "")
+				     global-password)
+		  :user-password   (unless (string= user-password "")
+				     user-password))
+	    info))
+  )
+
+(defmethod rudel-connect ((this rudel-obby-backend) info)
+  "Connect to an obby server using the information INFO.
+Return the connection object."
+  ;; Before we start, load the client functionality.
+  (require 'rudel-obby-client)
+
+  ;; Create the network process
+  (let* ((session    (plist-get info :session))
+	 (host       (plist-get info :host))
+	 (port       (plist-get info :port))
+	 (encryption (plist-get info :encryption))
+	 ;; Create the network process
+	 (socket     (funcall
+		      (if encryption
+			  (progn
+			    (require 'rudel-tls)
+			    #'rudel-tls-make-process)
+			#'make-network-process)
+		      :name     host
+		      :host     host
+		      :service  port
+		      ;; Install connection filter to redirect data to
+		      ;; the connection object
+		      :filter   #'rudel-filter-dispatch
+		      ;; Install connection sentinel to redirect state
+		      ;; changes to the connection object
+		      :sentinel #'rudel-sentinel-dispatch
+		      ;; Do not start receiving immediately since the
+		      ;; filter function is not yet setup properly.
+		      :stop     t))
+	 (connection (rudel-obby-connection
+		      host
+		      :session session
+		      :socket  socket
+		      :info    info)))
+
+    ;; Now start receiving and wait until the basic session setup is
+    ;; complete.
+    (continue-process socket)
+
+    ;; Wait for the connection to reach one of the states idle,
+    ;; join-failed and they-finalized.
+    (condition-case error
+	(lexical-let ((reporter (make-progress-reporter "Joining ")))
+	  (flet ((display-progress (state)
+	           (cond
+		    ;; For all states, just spin.
+		    ((consp state)
+		     (progress-reporter-force-update
+                      reporter nil (format "Joining (%s)" (car state))))
+
+		    ;; Done
+		    (t
+		     (progress-reporter-force-update reporter nil "Joining ")
+		     (progress-reporter-done reporter)))))
+
+	    (rudel-state-wait connection
+			      '(idle) '(join-failed they-finalized)
+			      #'display-progress)))
+
+      (rudel-entered-error-state
+       (destructuring-bind (symbol . state) (cdr error)
+	 (if (eq (rudel-find-state connection 'join-failed) state)
+	     (with-slots (error-symbol error-data) state
+	       (signal 'rudel-join-error
+		       (append (list error-symbol) error-data)))
+	   (signal 'rudel-join-error nil)))))
+
+    ;; The connection is now usable; return it.
+    connection)
+  )
+
+(defmethod rudel-ask-host-info ((this rudel-obby-backend))
+  "Ask user for information required to host an obby session."
+  (let ((port (read-number "Port: " 6522)))
+    (list :port port)))
+
+(defmethod rudel-host ((this rudel-obby-backend) info)
+  "Host an obby session using the information INFO.
+Return the created server."
+  ;; Before we start, we load the server functionality.
+  (require 'rudel-obby-server)
+
+  ;; Create the network process.
+  (let* ((port   (plist-get info :port))
+	 ;; Make a server socket
+	 (socket (make-network-process
+		  :name     "obby-server"
+		  :host     "0.0.0.0"
+		  :service  port
+		  :server   t
+		  :filter   #'rudel-filter-dispatch
+		  :sentinel #'rudel-sentinel-dispatch
+		  ;;
+		  :log
+		  (lambda (server-process client-process message)
+		    (let ((server (rudel-process-object server-process)))
+		      (rudel-add-client server client-process)))))
+	 ;; Construct server object.
+	 (server (rudel-obby-server "obby-server"
+				    :backend this
+				    :socket  socket)))
+
+    ;; Return the constructed server.
+    server)
+  )
+
+(defmethod rudel-make-document ((this rudel-obby-backend)
+				name session)
+  "Make a new document in SESSION named NAME.
+Return the new document."
+  ;; Find an unused document id and create a document with that id.
+  (let ((id (rudel-available-document-id this session)))
+    (with-slots (user-id) (oref session :self)
+      (rudel-obby-document name
+			   :session  session
+			   :id       id
+			   :owner-id user-id
+			   :suffix   1)))
+  )
+
+(defmethod rudel-available-document-id ((this rudel-obby-backend)
+					session)
+  "Return a document id, which is not in use in SESSION."
+  ;; Look through some candidates until an unused id is hit.
+  (let* ((used-ids (with-slots (documents) session
+		     (mapcar 'rudel-id documents)))
+	 (test-ids (number-sequence 0 (length used-ids))))
+    (car (sort (set-difference test-ids used-ids) '<)))
+  )
+
+
+;;; Class rudel-obby-user
+;;
+
+(defclass rudel-obby-user (rudel-user)
+  ((client-id  :initarg  :client-id
+	       :type     (or null integer) ;; We allow nil instead of making
+	       :accessor rudel-client-id   ;; the slot unbound, to be able to
+	       :initform nil               ;; search with test `rudel-client-id
+	       :documentation              ;; without headaches
+	       "Id of the client connection, which the user used to log in.
+The value is an integer, if the user is connected, and nil
+otherwise.")
+   (user-id    :initarg  :user-id
+	       :type     integer
+	       :accessor rudel-id
+	       :documentation
+	       "")
+   (connected  :initarg  :connected
+	       :type     boolean
+	       :accessor rudel-connected
+	       :documentation
+	       "")
+   (encryption :initarg  :encryption ;; TODO maybe we should use unbound when the user is not connected
+	       :type     boolean
+	       :documentation
+	       ""))
+  "Class rudel-obby-user ")
+
+(defmethod eieio-speedbar-description ((this rudel-obby-user))
+  "Provide a speedbar description for THIS."
+  (let ((connected  (oref this :connected))
+	(encryption (if (slot-boundp this :encryption)
+			(oref this :encryption)
+		      nil)))
+    (format "User %s (%s, %s)" (object-name-string this)
+	    (if connected  "Online" "Offline")
+	    (if encryption "Encryption" "Plain")))
+  )
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-obby-user))
+  "Return a string to use as a speedbar button for THIS."
+  (rudel-display-string this))
+
+(defmethod rudel-display-string ((this rudel-obby-user)
+				 &optional use-images align)
+  "Return a textual representation of THIS for user interface stuff."
+  (with-slots (connected color) this
+    (let ((encryption  (and (slot-boundp this :encryption)
+			    (oref this :encryption)))
+	  (name-string (call-next-method)))
+      (concat
+       ;; Name bit
+       (cond
+	((numberp align) (format (format "%-%ds" align) name-string))
+	((eq align t)    (format "%-12s" name-string))
+	(t		name-string))
+
+       ;; Connection status bit
+       (apply
+	#'propertize
+	(if connected "c" "-")
+	'help-echo (format (if connected
+			       "%s is connected"
+			     "%s is not connected")
+			   name-string)
+	'face      (list :background color)
+	(when use-images
+	  (list 'display (if connected
+			     rudel-icon-connected
+			   rudel-icon-disconnected))))
+
+       ;; Encryption bit
+       (apply
+	#'propertize
+	(if encryption "e" "-")
+	'help-echo (format (if encryption
+			       "%s's connection is encrypted"
+			     "%s's connection is not encrypted")
+			   name-string)
+	'face      (list :background color)
+	(when use-images
+	  (list 'display (if encryption
+			     rudel-icon-encrypted
+			   rudel-icon-plaintext)))))))
+  )
+
+
+;;; Class rudel-obby-document
+;;
+
+(defclass rudel-obby-document (rudel-document)
+  ((id       :initarg  :id
+	     :type     integer
+	     :accessor rudel-id
+	     :documentation
+	     "The id of this document.
+The id has to be unique only with respect to the other documents
+owned by the owner.")
+   (owner-id :initarg  :owner-id
+	     :type     integer
+	     :documentation
+	     "")
+   (suffix   :initarg  :suffix
+	     :type     integer
+	     :documentation
+	     "A counter used to distinguish identically named
+documents."))
+  "Objects of the class rudel-obby-document represent shared
+documents in obby sessions.")
+
+(defmethod rudel-both-ids ((this rudel-obby-document))
+  "Return a list consisting of document and owner id of THIS document."
+  (with-slots ((doc-id :id) owner-id) this
+    (list owner-id doc-id)))
+
+(defmethod rudel-unique-name ((this rudel-obby-document))
+  "Generate a unique name for THIS based on the name and the suffix."
+  (with-slots (suffix) this
+    (concat (when (next-method-p)
+	      (call-next-method))
+	    (when (> suffix 1)
+	      (format "<%d>" suffix))))
+  )
+
+(defmethod eieio-speedbar-description ((this rudel-obby-document))
+  "Construct a description for from the name of document object THIS."
+  (format "Document %s" (object-name-string this)))
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-obby-document))
+  "Return a string to use as a speedbar button for OBJECT."
+  (with-slots (subscribed) this
+    (format "%-12s %s" (object-name-string this)
+	    (if subscribed "s" "-")))
+  )
+
+
+;;; Obby message functions
+;;
+
+(defun rudel-obby-replace-in-string (string replacements)
+  "Replace elements of REPLACEMENTS in STRING.
+REPLACEMENTS is a list of conses whose car is the pattern and
+whose cdr is the replacement for the pattern."
+  (let ((result string))
+    (dolist (replacement replacements)
+      (let ((from (car replacement))
+	    (to   (cdr replacement)))
+	(setq result (replace-regexp-in-string
+		      from to result nil t))))
+    result)
+  )
+
+(defun rudel-obby-escape-string (string)
+  "Replace meta characters in STRING with their escape sequences."
+  (rudel-obby-replace-in-string
+   string
+   '(("\\\\" . "\\b") ("\n" . "\\n") (":" . "\\d")))
+  )
+
+(defun rudel-obby-unescape-string (string)
+  "Replace escaped versions of obby meta characters in STRING with the actual meta characters."
+  (rudel-obby-replace-in-string
+   string
+   '(("\\\\n" . "\n") ("\\\\d" . ":") ("\\\\b" . "\\")))
+  )
+
+(defun rudel-obby-parse-color (color)
+  "Parse the obby color string COLOR into an Emacs color."
+  (let* ((color-numeric (string-to-number color 16))
+	 (color-string  (format "#%04X%04X%04X"
+				(lsh (logand #xff0000 color-numeric) -08)
+				(lsh (logand #x00ff00 color-numeric) -00)
+				(lsh (logand #x0000ff color-numeric)  08))))
+    color-string)
+  )
+
+(defun rudel-obby-format-color (color)
+  "Format the Emacs color COLOR as obby color string."
+  (multiple-value-bind (red green blue) (color-values color)
+    (format "%02x%02x%02x" (lsh red -8) (lsh green -8) (lsh blue -8))))
+
+(defun rudel-obby-assemble-message (name &rest arguments)
+  ""
+  (concat (mapconcat
+	   (lambda (part)
+	     (if (and (not (null part)) (stringp part))
+		 (rudel-obby-escape-string part)
+	       part))
+	   (cons name arguments) ":")
+	  "\n")
+  )
+
+(defun rudel-obby-parse-message (message)
+  "Split MESSAGE at `:' and unescape resulting parts.
+
+The terminating `\n' should be removed from MESSAGE before
+calling this function."
+  (mapcar #'rudel-obby-unescape-string (split-string message ":")))
+
+(defun rudel-obby-send (socket name arguments)
+  "Send an obby message NAME with arguments ARGUMENTS through SOCKET."
+  ;; First, assemble the message string.
+  (let ((message (apply #'rudel-obby-assemble-message
+			name arguments)))
+    (if (>= (length message) rudel-obby-long-message-threshold)
+	;; For huge messages, chunk the message data and transmit the
+	;; chunks
+	(let ((total    (/ (length message)
+			   rudel-obby-long-message-chunk-size))
+	      (current  0)
+	      (reporter (make-progress-reporter "Sending data " 0.0 1.0)))
+	  (rudel-loop-chunks message chunk rudel-obby-long-message-chunk-size
+	    (progress-reporter-update reporter (/ (float current) total))
+	    (process-send-string socket chunk)
+	    (incf current))
+	  (progress-reporter-done reporter))
+      ;; Send small messages in one chunk
+      (process-send-string socket message)))
+  )
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'protocol)
+		   'obby 'rudel-obby-backend)
+
+;;;###autoload
+(eval-after-load 'rudel-zeroconf
+  '(rudel-zeroconf-register-service "_lobby._tcp" 'obby))
+
+(provide 'rudel-obby)
+;;; rudel-obby.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-backend.el b/emacs.d/lisp/rudel/rudel-backend.el
new file mode 100644
index 0000000..79cfef6
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-backend.el
@@ -0,0 +1,305 @@
+;;; rudel-backend.el --- A generic backend management mechanism for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, backend, factory
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a generic mechanism that handles registration,
+;; query and instantiation of Rudel backends for any number of
+;; functional categories.
+;;
+;; The class and collaboration design is as follows: for each
+;; category, which is identified by a symbol, there is a factory
+;; object (an instance of `rudel-backend-factory') that is responsible
+;; for creating backend objects of the category.  Examples of
+;; categories are 'transport', 'protocol' and 'session-initiation'.
+;; In addition to creating backend object, factories also allow
+;; querying backends based on desired capabilities and load backend
+;; implementations only when required.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+
+;;; Class rudel-backend
+;;
+
+(defclass rudel-backend ()
+  ((version      :initarg  :version
+		 :type     list
+		 :documentation
+		 "A list of the form (MAJOR MINOR [MICRO
+WHATEVER*]) describing the version of the backend.")
+   (capabilities :initarg  :capabilities
+		 :type     list
+		 :initform nil
+		 :documentation
+		 "A list of symbols, or lists whose car is a
+symbol, that each describe one capability of the backend."))
+  "Base class for backend classes."
+  :abstract t)
+
+(defmethod rudel-capable-of-p ((this rudel-backend) capability)
+  "Return t if the backend THIS is capable of CAPABILITY."
+  (with-slots (capabilities) this
+    (member capability capabilities)))
+
+
+;;; Class rudel-backend-factory
+;;
+
+(defclass rudel-backend-factory ()
+  ((backends  :initarg   :backends
+	      :type       hash-table
+	      :documentation
+	      "Mapping of symbolic names to classes (prior to
+instantiation) or objects (after instantiation) for all backends
+known to the factory object.")
+   (factories :type       hash-table
+	      :allocation :class
+	      :documentation
+	      "Mapping of backend categories to responsible
+factory objects."))
+  "Factory class that holds an object for each known backend
+category. Objects manage backend implementation for one backend
+category each.")
+(oset-default rudel-backend-factory factories
+	      (make-hash-table :test #'eq))
+
+(defmethod initialize-instance ((this rudel-backend-factory) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+  (oset this :backends (make-hash-table :test #'eq)))
+
+;;;###autoload
+(defmethod rudel-get-factory :static ((this rudel-backend-factory)
+				      category)
+  "Return the factory responsible for CATEGORY.
+If there is no responsible factory, create one and return it."
+  (with-slots (factories) this
+    (or (gethash category factories)
+	(puthash category (rudel-backend-factory category) factories)))
+  )
+
+;;;###autoload
+(defmethod rudel-add-backend ((this rudel-backend-factory)
+			      name class &optional replace)
+  "Add factory class CLASS with name NAME to THIS.
+if REPLACE is non-nil, replace a registered implementation of the
+same name."
+  (with-slots (backends) this
+    (when (or (not (gethash name backends))
+	      replace)
+      (puthash name class backends))))
+
+(defmethod rudel-get-backend ((this rudel-backend-factory) name)
+  "Return backend object for name NAME or nil if there is none.
+The returned backend is of the form (NAME . OBJECT).
+
+Backends are loaded, if necessary."
+  ;; Load all available backends
+  (rudel-load-backends this)
+
+  ;; Find the backend and return it.
+  (with-slots (backends) this
+    (let ((backend (gethash name backends)))
+      (when backend
+	(cons name backend))))
+  )
+
+(defmethod rudel-all-backends ((this rudel-backend-factory))
+  "Return a list of all backends registered with THIS.
+Each list element is of the form (NAME . CLASS-OR-OBJECT)."
+  (let ((backend-list))
+    (with-slots (backends) this
+      (maphash (lambda (name class)
+		 (push (cons name class) backend-list))
+	       backends))
+    backend-list)
+  )
+
+(defmethod rudel-suitable-backends ((this rudel-backend-factory) predicate)
+  "Return a list of backends which satisfy PREDICATE.
+Each list element is of the form (NAME . OBJECT).
+Backends are loaded, if necessary."
+  ;; Load all available backends
+  (rudel-load-backends this)
+
+  ;; Retrieve and return all backends, possibly filtering the list
+  ;; using PREDICATE.
+  (if predicate
+      (remove-if-not
+       (lambda (cell)
+	 (and (object-p (cdr cell))
+	      (funcall predicate (cdr cell))))
+       (rudel-all-backends this))
+    (rudel-all-backends this))
+  )
+
+(defmethod rudel-load-backends ((this rudel-backend-factory))
+  "Load backends in THIS factory if necessary.
+Loading errors are not reported explicitly, but can be detected
+by checking for backends that still are classes rather than
+objects."
+  ;; Map lambda that loads unloaded backends over all backends. Store
+  ;; objects back after loading.
+  (with-slots (backends) this
+    (maphash
+     (lambda (name class)
+       (unless (object-p class)
+	 (condition-case error
+	     (puthash name (make-instance
+			    class (symbol-name name)) backends)
+	   (error (display-warning
+		   '(rudel backend)
+		   (format "Could not load backend `%s': %s"
+			   name
+			   (error-message-string error))
+		   :warning)))))
+	 backends))
+  )
+
+
+;;; High-level frontend functions
+;;
+
+(defsubst rudel-backend-cons-p (cell)
+  "Check whether CELL is a cons of a backend name and object."
+  (and (consp cell)
+       (symbolp (car cell))
+       (object-p (cdr cell))))
+
+;;;###autoload
+(defun rudel-backend-get (category name)
+  "A shortcut for getting backend NAME of category CATEGORY.
+The returned backend is of the form (NAME . OBJECT)."
+  (rudel-get-backend (rudel-backend-get-factory category) name))
+
+;;;###autoload
+(defun rudel-backend-get-factory (category)
+  "A shortcut for getting the factory object for CATEGORY."
+  (rudel-get-factory rudel-backend-factory category))
+
+(defun rudel-backend-suitable-backends (category predicate)
+  "Return backends from category CATEGORY that satisfy PREDICATE.
+Each list element is of the form (NAME . OBJECT)."
+  (rudel-suitable-backends
+   (rudel-backend-get-factory category)
+   predicate))
+
+(defun rudel-backend-choose (category &optional predicate)
+  "Choose a backend from CATEGORY satisfying PREDICATE automatically or by asking the user.
+The returned backend is of the form (NAME . CLASS-OR-OBJECT)."
+  (let ((backends (rudel-backend-suitable-backends
+		   category predicate)))
+    (unless backends
+      (error "No backends available"))
+
+    (if (= (length backends) 1)
+	;; If there is only one backend, we can choose that one right
+	;; away displaying a message to avoid confusing the user.
+	(let ((backend (nth 0 backends)))
+	  (message "Using backend `%s'" (symbol-name (car backend)))
+	  (sit-for 0.5)
+	  backend)
+
+      ;; When we have more than one backend, we have to ask the user,
+      ;; which one she wants.
+      (require 'rudel-interactive)
+      (rudel-read-backend backends nil 'object)))
+  )
+
+
+;;; User interaction functions
+;;
+
+(defun rudel-backend-dump (&optional load)
+  "Create display information about backends in a buffer.
+If LOAD is non-nil, load all backends before display. This makes
+available information available for the backends"
+  (interactive "p")
+  (save-excursion
+    ;; Setup a new buffer.
+    (set-buffer (get-buffer-create "*Rudel Backends*"))
+    (erase-buffer)
+    (set-window-buffer nil (current-buffer))
+    (maphash
+     (lambda (category factory)
+       ;; Load backends if requested.
+       (unless (zerop load)
+	 (rudel-load-backends factory))
+
+       ;; Insert header for this category.
+       (insert (propertize
+		(format "Category %s\n" category)
+		'face 'bold))
+       (insert (apply #'format
+		      "  %-20s %-6s %-7s %s\n"
+		      (mapcar
+		       (lambda (header)
+			 (propertize header 'face 'italic))
+		       '("name" "loaded" "version" "capabilities"))))
+
+       ;; Insert all backends provided by this factory.
+       (dolist (backend (rudel-all-backends factory))
+	 (insert (format "  %-20s %-6s %-7s (%s)\n"
+			 (propertize
+			  (symbol-name (car backend))
+			  'face 'font-lock-type-face)
+			 (propertize
+			  (prin1-to-string (object-p (cdr backend)))
+			  'face 'font-lock-variable-name-face)
+			 (propertize
+			  (if (object-p (cdr backend))
+			      (mapconcat #'prin1-to-string
+					 (oref (cdr backend) :version)
+					 ".")
+			    "?")
+			  'face 'font-lock-constant-face)
+			 (propertize
+			  (if (object-p (cdr backend))
+			      (mapconcat #'prin1-to-string
+					 (oref (cdr backend) :capabilities)
+					 " ")
+			    "?")
+			  'face 'font-lock-constant-face))))
+
+       ;; One empty line between backend categories.
+       (insert "\n"))
+     (oref rudel-backend-factory factories)))
+  )
+
+(provide 'rudel-backend)
+;;; rudel-backend.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-chat.el b/emacs.d/lisp/rudel/rudel-chat.el
new file mode 100644
index 0000000..c7e992f
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-chat.el
@@ -0,0 +1,103 @@
+;;; rudel-chat.el --- Handling of chat messages
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, chat, message
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains some functions that deal with incoming chat
+;; messages. Backends that support receiving chat message should
+;; dispatch them using `rudel-chat-dispatch-message'. Chat messages
+;; will be processed in a customizable way from there.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+
+;;; Customization
+;;
+
+(defcustom rudel-chat-handler-function #'rudel-chat-handle-buffer
+  "A function that is called when chat messages arrive."
+  :group 'rudel
+  :type  '(choice (const :tag "Display messages in the echo area"
+			 rudel-chat-handle-message)
+		  (const :tag "Log messages into a buffer"
+			 rudel-chat-handle-buffer)
+		  (function :tag "Other function"))
+  )
+
+
+;;; Variables and constants
+;;
+
+(defconst rudel-chat-buffer-name "*rudel-chat-log*"
+  "Name of the buffer into which received chat message should be
+inserted.")
+
+
+;;; Interface functions
+;;
+
+(defun rudel-chat-dispatch-message (sender message)
+  "Dispatch SENDER and MESSAGE to customizable handler function."
+  (funcall rudel-chat-handler-function sender message))
+
+
+;;; Handler functions
+;;
+
+(defun rudel-chat-handle-message (sender text)
+  "Display SENDER and MESSAGE in the echo area."
+  (message "%s says: %s"
+	   (rudel-chat-format-sender sender)
+	   text))
+
+(defun rudel-chat-handle-buffer (sender text)
+  "Insert SENDER and MESSAGE in a buffer."
+  (let ((buffer (or (get-buffer rudel-chat-buffer-name)
+		    (pop-to-buffer rudel-chat-buffer-name))))
+    (with-current-buffer buffer
+      (goto-char (point-min))
+      (insert (format "%s: %s\n"
+		      (rudel-chat-format-sender sender)
+		      text))))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-chat-format-sender (user)
+  "Format USER handling nil values."
+  (if user
+      (object-name-string user)
+    "<unknown sender>"))
+
+(provide 'rudel-chat)
+;;; rudel-chat.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-compat.el b/emacs.d/lisp/rudel/rudel-compat.el
new file mode 100644
index 0000000..630496c
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-compat.el
@@ -0,0 +1,158 @@
+;;; rudel-compat.el --- Compatibility code for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;; Copyright (C) 2009 Phil Hagelberg
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;;         Phil Hagelberg <phil@enigma>
+;; Keywords: rudel, compatibility
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains compatibility code required to make Rudel work
+;; with different versions of Emacs.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(unless (fboundp 'read-color)
+  (defun read-color (prompt &rest ignored)
+    "Poor man's read color without completion.
+You have to take care to only enter valid color names."
+    (read-string prompt)))
+
+
+;;; Spinner Progress Reporter
+;;
+
+(unless (functionp 'progress-reporter-spin)
+  (defvar progress-spinner-values ["-" "\\" "|" "/"])
+
+  (defsubst progress-reporter-update (reporter &optional value)
+  "Report progress of an operation in the echo area.
+
+The first parameter, REPORTER, should be the result of a call to
+`make-progress-reporter'. For reporters for which the max value
+is known, the second argument determines the actual progress of
+operation; it must be between MIN-VALUE and MAX-VALUE as passed
+to `make-progress-reporter'.
+
+However, if the change since last echo area update is too small
+or not enough time has passed, then do nothing (see
+`make-progress-reporter' for details).
+
+In this case, this function is very inexpensive, you need not
+care how often you call it."
+  (if (progress-reporter-spinner-p reporter)
+      (progress-reporter-spin reporter)
+    (when (>= value (car reporter))
+      (progress-reporter-do-update reporter value))))
+
+    (defun make-progress-reporter (message &optional min-value max-value
+                                           current-value min-change min-time)
+      "Return progress reporter object to be used with `progress-reporter-update'.
+
+MESSAGE is shown in the echo area.  When at least 1% of operation
+is complete, the exact percentage will be appended to the
+MESSAGE.  When you call `progress-reporter-done', word \"done\"
+is printed after the MESSAGE.  You can change MESSAGE of an
+existing progress reporter with `progress-reporter-force-update'.
+
+If provided, MIN-VALUE and MAX-VALUE designate starting (0%
+complete) and final (100% complete) states of operation.  The
+latter should be larger; if this is not the case, then simply
+negate all values.  Optional CURRENT-VALUE specifies the progress
+by the moment you call this function.  You should omit it or set
+it to nil in most cases since it defaults to MIN-VALUE.
+
+Optional MIN-CHANGE determines the minimal change in percents to
+report (default is 1%.)  Optional MIN-TIME specifies the minimal
+time before echo area updates (default is 0.2 seconds.)  If
+`float-time' function is not present, then time is not tracked
+at all.  If OS is not capable of measuring fractions of seconds,
+then this parameter is effectively rounded up.
+
+If MIN-VALUE and MAX-VALUE are unknown, they may be omitted to
+return a \"pulsing\" progress reporter."
+      (unless min-time
+        (setq min-time 0.2))
+      (let ((reporter
+             (cons min-value ;; Force a call to `message' now
+                   (vector (if (and (fboundp 'float-time)
+                                    (>= min-time 0.02))
+                               (float-time) nil)
+                           (or min-value 0)
+                           max-value
+                           message
+                           (if min-change (max (min min-change 50) 1) 1)
+                           min-time))))
+        (progress-reporter-update reporter (or current-value min-value))
+        reporter))
+
+    (defun progress-reporter-force-update (reporter &optional value new-message)
+        "Report progress of an operation in the echo area unconditionally.
+
+First two parameters are the same as for
+`progress-reporter-update'.  Optional NEW-MESSAGE allows you to
+change the displayed message."
+        (let ((parameters (cdr reporter)))
+          (when new-message
+            (aset parameters 3 new-message))
+          (when (aref parameters 0)
+            (aset parameters 0 (float-time)))
+          (if (progress-reporter-spinner-p reporter)
+              (progress-reporter-spin reporter)
+            (progress-reporter-do-update reporter value))))
+
+      (defun progress-reporter-spinner-p (reporter)
+        "Return t if REPORTER has an unknown max value."
+        (null (aref (cdr reporter) 2)))
+
+      (defun progress-reporter-spin (reporter)
+        "Advance indicator of spinning REPORTER."
+        (let* ((parameters (cdr reporter))
+               (index      (+ (aref parameters 1) 1)))
+          (aset parameters 1 index)
+          (let ((message-log-max nil)) ; No logging
+            (message "%s %s"
+                     (aref progress-spinner-values (mod index 4))
+                     (aref parameters 3))))))
+
+(unless (functionp 'string-match-p)
+  (defsubst string-match-p (regexp string &optional start)
+    "Same as `string-match' except this function does not change the match data"
+    (let ((inhibit-changing-match-data t))
+      (string-match regexp string start))))
+
+(defun rudel-get-coding-system (name)
+  (if (functionp 'coding-system-from-name)
+      (coding-system-from-name name)
+    ;; May need to try a little harder here for Emacs 22 depending on
+    ;; what kind of encoding names are given us.
+    (intern name)))
+
+(provide 'rudel-compat)
+;;; rudel-compat.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-compile.el b/emacs.d/lisp/rudel/rudel-compile.el
new file mode 100644
index 0000000..aeba765
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-compile.el
@@ -0,0 +1,46 @@
+;;; rudel-compile.el --- Byte-compile Rudel
+;;
+;; Copyright (C) 2009 Phil Hagelberg
+;;
+;; Author: Phil Hagelberg <phil@enigma>
+;; Keywords: Rudel, compile
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Press M-x eval-buffer to byte-compile Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(let ((rudel-dir (file-name-directory
+		  (or (buffer-file-name) load-file-name))))
+  ;; Adjust load path for compilation.
+  (dolist (dir '("." "jupiter" "obby" "zeroconf"))
+    (let ((d (concat rudel-dir "/" dir)))
+      (add-to-list 'load-path d)))
+
+  ;; Byte compile everything.
+  (byte-recompile-directory rudel-dir 0))
diff --git a/emacs.d/lisp/rudel/rudel-debug.el b/emacs.d/lisp/rudel/rudel-debug.el
new file mode 100644
index 0000000..747bf68
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-debug.el
@@ -0,0 +1,215 @@
+;;; rudel-debug.el --- Debugging functions for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, debugging
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Debugging functions for Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'data-debug)
+(require 'eieio-datadebug)
+
+(require 'rudel-util)
+
+
+;;; Customization
+;;
+
+(defgroup rudel-debug nil
+  "Customization options related to Rudel's debugging functions."
+  :group 'rudel)
+
+(defface rudel-debug-sent-data-face
+  '((default (:background "orange")))
+  "Face used for sent data."
+  :group 'rudel-debug)
+
+(defface rudel-debug-received-data-face
+  '((default (:background "light sky blue")))
+  "Face used for received (but not yet processed) data."
+  :group 'rudel-debug)
+
+(defface rudel-debug-received-processed-data-face
+  '((default (:background "DeepSkyBlue1")))
+  "Face used for received data after processing."
+  :group 'rudel-debug)
+
+(defface rudel-debug-state-face
+  '((default (:background "light gray")))
+  "Face used when indicating state changes."
+  :group 'rudel-debug)
+
+(defface rudel-debug-special-face
+  '((default (:background "light sea green")))
+  "Face used for additional information."
+  :group 'rudel-debug)
+
+(defvar rudel-debug-tag-faces
+  '((:sent               . (rudel-debug-sent-data-face               "<  "))
+    (:received           . (rudel-debug-received-data-face           ">  "))
+    (:received-processed . (rudel-debug-received-processed-data-face ">> "))
+    (:state              . (rudel-debug-state-face                   "|  "))
+    (:special            . (rudel-debug-special-face                 ";  ")))
+  "Associate tag to faces and prefixes.")
+
+
+;;; Data debug functions
+;;
+
+(defun rudel-adebug-session ()
+  "Analyze current session in data debug buffer."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-current-buffer (data-debug-new-buffer "RUDEL-SESSION")
+    (data-debug-insert-thing rudel-current-session "# " "")))
+
+(defun rudel-adebug-server (server)
+  "Analyze server in data debug buffer."
+  (interactive)
+
+  (with-current-buffer (data-debug-new-buffer "RUDEL-SERVER")
+    (data-debug-insert-thing server "# " "")))
+
+
+;;; Advice stuff
+;;
+
+(defadvice rudel-join-session (after rudel-debug last activate)
+  "Run data-debug inspection on newly created session objects."
+  (require 'rudel-debug)
+  (rudel-adebug-session))
+
+(defadvice rudel-host-session (after rudel-debug last activate)
+  "Run data-debug inspection on newly created server objects."
+  (require 'rudel-debug)
+  (rudel-adebug-server ad-return-value))
+
+
+;;; Network functions
+;;
+
+(defun rudel-suspend-session-socket ()
+  "Suspend the socket associated to the current session."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-slots (connection) rudel-current-session
+    (with-slots (socket) connection
+      (stop-process socket))))
+
+(defun rudel-resume-session-socket ()
+  "Resume the socket associated to the current session."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-slots (connection) rudel-current-session
+    (with-slots (socket) connection
+      (continue-process socket))))
+
+
+;;; Reset functions
+;;
+
+(defun rudel-kill-processes ()
+  "TODO"
+  (interactive)
+  (mapc #'delete-process (process-list)))
+
+(defun rudel-reset ()
+  "TODO"
+  (interactive)
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (when rudel-buffer-document
+	(setq rudel-buffer-document nil))))
+  (rudel-kill-processes)
+  (setq rudel-current-session nil))
+
+
+;;; Socket debugging
+;;
+
+(defmethod rudel-state-change :before ((this rudel-socket-owner)
+				       state message)
+  "Print STATE and MESSAGE to debug stream."
+  (with-slots (socket) this
+    (rudel-debug-stream-insert
+     (rudel-debug-stream-name socket)
+     :state
+     (format "connection state changed to %s: \"%s\""
+	     (upcase (symbol-name state))
+	     ;; MESSAGE ends with a newline; remove it
+	     (substring message 0 -1))))
+  )
+
+
+;;; Utility functions
+;;
+
+(defun rudel-debug-stream-name (socket)
+  "Return debug stream name for SOCKET."
+  (process-name socket))
+
+(defun rudel-debug-stream-insert (stream tag data &optional object)
+  "Insert DATA and possibly OBJECT into stream using TAG as style."
+  (let* ((buffer-name (format "*%s stream*" stream))
+	 (buffer      (or (get-buffer buffer-name)
+			  (data-debug-new-buffer buffer-name)))
+	 (appearance (cdr (assoc tag rudel-debug-tag-faces)))
+	 (face       (when appearance
+		       (or (nth 0 appearance)
+			   'default)))
+	 (prefix     (or (nth 1 appearance)
+			 "")))
+    (save-excursion
+      (set-buffer buffer)
+      (goto-char 0)
+      (insert prefix
+	      (propertize data 'face face)
+	      (if (string= (substring data -1) "\n")
+		  "" "\n"))
+      (when object
+	(data-debug-insert-thing object prefix ""))))
+    )
+
+(provide 'rudel-debug)
+;;; rudel-debug.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-errors.el b/emacs.d/lisp/rudel/rudel-errors.el
new file mode 100644
index 0000000..9811511
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-errors.el
@@ -0,0 +1,66 @@
+;;; rudel-errors.el --- Error data used in Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, errors, conditions
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; The following condition hierarchy is defined:
+;;
+;; error
+;; +- rudel-error
+;;    +- rudel-join-error
+;;    +- rudel-host-error
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+;; rudel-join-error
+
+(intern "rudel-join-error")
+
+(put 'rudel-join-error 'error-conditions
+     '(error
+       rudel-error rudel-join-error))
+
+(put 'rudel-join-error 'error-message
+     "Could not join session")
+
+;; rudel-host-error
+
+(intern "rudel-host-error")
+
+(put 'rudel-host-error 'error-conditions
+     '(error
+       rudel-error rudel-host-error))
+
+(put 'rudel-host-error 'error-message
+     "Could not host session")
+
+(provide 'rudel-errors)
+;;; rudel-errors.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-hooks.el b/emacs.d/lisp/rudel/rudel-hooks.el
new file mode 100644
index 0000000..0cc9a3e
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-hooks.el
@@ -0,0 +1,252 @@
+;;; rudel-hooks.el --- Hooks for Rudel events
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, hook
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains all global hooks (as opposed to hooks provided
+;; by individual objects) provided by Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+
+;;; Hook variables
+;;
+
+(defvar rudel-session-start-hook nil
+  "This hook is run when a new session is started.
+The only argument is the session object.")
+
+(defvar rudel-session-end-hook nil
+  "This hook is run when a session ends.
+The only argument is the session object.")
+
+(defvar rudel-session-add-user-hook nil
+  "This hook is run when a user is added to a session.
+The arguments are the session and the user.")
+
+(defvar rudel-session-remove-user-hook nil
+  "This hook is run when a user is removed from a session.
+The arguments are the session and the user.")
+
+(defvar rudel-session-add-document-hook nil
+  "This hook is run when a document is added to a session.
+The arguments are the session and the document.")
+
+(defvar rudel-session-remove-document-hook nil
+  "This hook is run when a document is removed from a session.
+The arguments are the session and the document.")
+
+
+(defvar rudel-user-change-hook nil
+  "This hooks is run when a user object changes.
+The only argument is the user object.")
+
+
+(defvar rudel-document-attach-hook nil
+  "This hook is run when a document is attached to a buffer.
+The arguments are the document and the buffer.")
+
+(defvar rudel-document-detach-hook nil
+  "This hook is run when document is detached from its buffer.
+The arguments are the document and the buffer.")
+
+
+;;; Handlers
+;;
+
+(defun rudel-hooks--session-start (session)
+  "Watch SESSION for added/removed users and documents."
+  ;; Install handlers for the hooks of the session.
+  (with-slots (users documents) session
+
+    ;; Watch for session end.
+    (object-add-hook session 'end-hook
+		     #'rudel-hooks--session-end)
+
+    ;; Watch all users in the session.
+    (dolist (user users)
+      (rudel-hooks--session-add-user session user))
+
+    ;; Watch session for added/removed users.
+    (object-add-hook
+     session 'add-user-hook
+     #'rudel-hooks--session-add-user)
+    (object-add-hook
+     session 'remove-user-hook
+     #'rudel-hooks--session-remove-user)
+
+    ;; Watch all documents in the session.
+    (dolist (document documents)
+      (rudel-hooks--session-add-document session document))
+
+    ;; Watch session for added/removed documents.
+    (object-add-hook
+     session 'add-document-hook
+     #'rudel-hooks--session-add-document)
+    (object-add-hook
+     session 'remove-document-hook
+     #'rudel-hooks--session-remove-document))
+  )
+
+(defun rudel-hooks--session-end (session)
+  "Stop watching SESSION for added/removed users and documents."
+  ;; Remove handlers from the session.
+  (with-slots (users documents) session
+
+    ;; Stop watching for session end.
+    (object-remove-hook session 'end-hook
+			#'rudel-hooks--session-end)
+
+    ;; Stop watching all users in the session.
+    (dolist (user users)
+      (rudel-hooks--session-remove-user session user))
+
+    ;; Stop watching session for added/removed users.
+    (object-remove-hook
+     session 'add-user-hook
+     #'rudel-hooks--session-add-user)
+    (object-remove-hook
+     session 'remove-user-hook
+     #'rudel-hooks--session-remove-user)
+
+    ;; Stop watching all documents in the session.
+    (dolist (document documents)
+      (rudel-hooks--session-remove-document session document))
+
+    ;; Stop watching session for added/removed documents.
+    (object-remove-hook
+     session 'add-document-hook
+     #'rudel-hooks--session-add-document)
+    (object-remove-hook
+     session 'remove-document-hook
+     #'rudel-hooks--session-remove-document))
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-end-hook session)
+  )
+
+(defun rudel-hooks--session-add-user (session user)
+  "Watch USER for changes and run `rudel-session-add-user-hook'."
+  ;; Watch USER.
+  (object-add-hook user 'change-hook #'rudel-hooks--user-change)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-add-user-hook session user))
+
+(defun rudel-hooks--session-remove-user (session user)
+  "Stop watching USER and run `rudel-session-remove-user-hook'"
+  ;; Stop watching USER.
+  (object-remove-hook user 'change-hook #'rudel-hooks--user-change)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-remove-user-hook
+		      session user))
+
+(defun rudel-hooks--session-add-document (session document)
+  "Watch DOCUMENT and run `rudel-session-add-document-hook'."
+  ;; Watch document for attach/detach.
+  (object-add-hook document 'attach-hook
+		   #'rudel-hooks--document-attach)
+  (object-add-hook document 'detach-hook
+		   #'rudel-hooks--document-detach)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-add-document-hook
+		      session document)
+  )
+
+(defun rudel-hooks--session-remove-document (session document)
+  "Stop watching DOCUMENT and run `rudel-session-remove-document-hook'."
+  ;; Stop watching DOCUMENT for attach/detach.
+  (object-remove-hook
+   document 'attach-hook #'rudel-hooks--document-attach)
+  (object-remove-hook
+   document 'detach-hook #'rudel-hooks--document-detach)
+
+  ;; Run the hook.
+  (run-hook-with-args 'rudel-session-remove-document-hook
+		      session document)
+  )
+
+
+(defun rudel-hooks--user-change (user)
+  "Run `rudel-user-change-hook' with argument USER."
+  (run-hook-with-args 'rudel-user-change-hook user))
+
+
+(defun rudel-hooks--document-attach (document buffer)
+  "Run `rudel-document-attach-hook' with arguments DOCUMENT and BUFFER."
+  (run-hook-with-args 'rudel-document-attach-hook
+		      document buffer))
+
+(defun rudel-hooks--document-detach (document buffer)
+  "Run `rudel-document-detach-hook' with arguments DOCUMENT and BUFFER."
+  (run-hook-with-args 'rudel-document-detach-hook
+		      document buffer))
+
+
+;;; Initialization
+;;
+
+(defun rudel-hooks--install-handlers ()
+  "Install handlers for session start/end."
+  ;; Install handlers for already started sessions.
+  (when (boundp 'rudel-current-session)
+    (mapc
+     #'rudel-hooks--session-start
+     (when rudel-current-session
+       (list rudel-current-session))))
+
+  ;; Watch for session start/end.
+  (add-hook 'rudel-session-start-hook
+	    #'rudel-hooks--session-start)
+  )
+
+(defun rudel-hooks--uninstall-handlers ()
+  "Uninstall handlers for session start/end."
+  ;; Stop watching session start/end.
+  (remove-hook 'rudel-session-start-hook
+	       #'rudel-hooks--session-start)
+
+  ;; Uninstall handlers for already started sessions.
+  (when (boundp 'rudel-current-session)
+    (mapc
+     #'rudel-hooks--session-end
+     (when rudel-current-session
+       (list rudel-current-session))))
+  )
+
+(rudel-hooks--install-handlers)
+
+(provide 'rudel-hooks)
+;;; rudel-hooks.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-icons.el b/emacs.d/lisp/rudel/rudel-icons.el
new file mode 100644
index 0000000..9bb35b5
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-icons.el
@@ -0,0 +1,90 @@
+;;; rudel-icons.el --- Icons used by Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, icons
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file loads all icons used in Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'image)
+
+
+;;; Image constants
+;;
+
+(defconst rudel-icons-image-formats '(svg png)
+  "Image formats to try (in that order) when loading Rudel icons.")
+
+(defconst rudel-icons-directory
+  (file-name-as-directory
+   (concat (file-name-directory
+	    (locate-library "rudel-icons.el"))
+	   "icons"))
+  "Directory that holds Rudel icon files.")
+
+
+;;; Helper macro
+;;
+
+(defmacro rudel-defimage (name &optional docstring)
+  "Load image from Rudel icon directory and define image named NAME.
+Optional argument DOCSTRING is the documentation string to
+associate with the image."
+  (declare (doc-string 2))
+  (let ((icon  (intern (format "rudel-icon-%s" name)))
+	(specs (mapcar
+		(lambda (type)
+		  `(:type   ,type
+		    :ascent center
+		    :mask   heuristic
+		    :file   ,(concat rudel-icons-directory
+				     name "." (symbol-name type))))
+		rudel-icons-image-formats)))
+    `(defimage ,icon
+       (,@specs)
+       ,(or docstring
+	    (format "%s icon." (capitalize name)))))
+  )
+
+
+;;; Image definitions
+;;
+
+(rudel-defimage "person")
+(rudel-defimage "document")
+(rudel-defimage "connected")
+(rudel-defimage "disconnected")
+(rudel-defimage "plaintext")
+(rudel-defimage "encrypted")
+
+(provide 'rudel-icons)
+;;; rudel-icons.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-interactive.el b/emacs.d/lisp/rudel/rudel-interactive.el
new file mode 100644
index 0000000..5dda752
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-interactive.el
@@ -0,0 +1,181 @@
+;;; rudel-interactive.el --- User interaction functions for Rudel.
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, user, interface, interaction
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Functions for user interactions commonly used in Rudel components.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'rudel-compat) ;; for `read-color' replacement
+
+
+;;; Function for reading Rudel objects from the user.
+;;
+
+(defun rudel-read-backend (backends &optional prompt return)
+  "Read a backend name from BACKENDS and return that name or the actual backend depending on RETURN.
+If RETURN is 'object, return the backend object which is of the
+form (NAME . CLASS-OR-OBJECT); Otherwise return the name as
+string."
+  (unless prompt
+    (setq prompt "Backend: "))
+  (let* ((backend-names (mapcar (lambda (cell)
+				  (symbol-name (car cell)))
+				backends))
+	 (backend-name  (completing-read prompt backend-names nil t)))
+    (cond
+     ((eq return 'object)
+       (assoc (intern backend-name) backends))
+     (t backend-name)))
+  )
+
+(defun rudel-read-session (sessions &optional prompt return)
+  "Read a session name from SESSIONS and return that name or the session info depending on RETURN.
+If PROMPT is non-nil use as prompt string.
+If RETURN is 'object, return the session object; Otherwise return
+the name as string."
+  (unless prompt
+    (setq prompt "Session: "))
+  ;; For presentation and identification of sessions, use the :name
+  ;; property.
+  (flet ((to-string (session)
+		    (if (rudel-backend-cons-p session)
+			(symbol-name (car session))
+		      (plist-get session :name))))
+    ;; Read a session by name, then return that name or the
+    ;; corresponding session info.
+    (let ((session-name (completing-read prompt
+					 (mapcar #'to-string sessions)
+					 nil t)))
+      (cond
+       ((eq return 'object)
+	(find session-name sessions
+	      :key  #'to-string :test #'string=))
+       (t session-name))))
+  )
+
+(defun rudel-read-user-name ()
+  "Read a username.
+The default is taken from `rudel-default-username'."
+  (read-string "Username: " rudel-default-username))
+
+(defun rudel-read-user-color ()
+  "Read a color."
+  (read-color "Color: " t))
+
+(defun rudel-read-user (&optional users prompt return)
+  "Read a user name from USERS and return that name or the actual user depending on RETURN.
+If USERS is nil, use the user list of `rudel-current-session'.
+If RETURN. is 'object, return the user object; Otherwise return
+the name as string."
+  ;; If no user list is provided, the user list of the current session
+  ;; is used.
+  (unless users
+    (if rudel-current-session
+	(setq users (oref rudel-current-session :users))
+      (error "No user list and no active Rudel session")))
+  (unless prompt
+    (setq prompt "User: "))
+  ;; Construct a list of user name, read a name with completion and
+  ;; return a user name of object.
+  (let* ((user-names (mapcar 'object-name-string users))
+	 (user-name  (completing-read prompt user-names nil t)))
+    (cond
+     ((eq return 'object)
+      (find user-name users
+	    :test 'string= :key 'object-name-string))
+     (t user-name)))
+  )
+
+(defun rudel-read-document (&optional documents prompt return)
+  "Read a document name from DOCUMENTS and return that name or the actual document depending on RETURN.
+If RETURN. is 'object, return the backend object; Otherwise
+return the name as string."
+  (unless documents
+    (if rudel-current-session
+	(setq documents (oref rudel-current-session :documents))
+      (error "No document list and no active Rudel session")))
+  (unless documents
+    (error "No documents")) ; TODO error is a bit harsh
+  (unless prompt
+    (setq prompt "Document: "))
+
+  ;; Construct list of names, read one name and return that name or
+  ;; the named object.
+  (let* ((document-names (mapcar #'rudel-unique-name documents))
+	 (document-name  (completing-read prompt document-names nil t)))
+    (cond
+     ((eq return 'object)
+      (find document-name documents
+	    :test #'string= :key #'rudel-unique-name))
+     (t document-name)))
+  )
+
+
+;;; Buffer allocation functions
+;;
+
+(defun rudel-allocate-buffer-clear-existing (name)
+  "When the requested buffer NAME exists, clear its contents and use it."
+  (let ((buffer (get-buffer name)))
+    (if buffer
+	(progn
+	  ;; Ask the user whether it is OK to erase the contents of
+	  ;; the buffer.
+	  (unless (yes-or-no-p (format
+				"Buffer `%s' already exists; Erase contents? "
+				name))
+	    (error "Buffer `%s' already exists" name)) ;; TODO throw or signal; not error
+	  ;; When the buffer is attached to a different document, ask
+	  ;; whether it is OK to detach the buffer.
+	  (let ((document (rudel-buffer-document buffer)))
+	    (unless (or (not document)
+			(yes-or-no-p (format
+				      "Buffer `%s' is attached to the document `%s'; Detach? "
+				      name
+				      (rudel-unique-name document))))
+	      (error "Buffer `%s' already attached to a document" name)))
+	  ;; Delete buffer contents; maybe detach buffer first.
+	  (when (rudel-buffer-has-document-p buffer)
+	    (rudel-unpublish-buffer buffer))
+	  (with-current-buffer buffer
+	    (erase-buffer)))
+      (setq buffer (get-buffer-create name)))
+    buffer)
+  )
+
+(defun rudel-allocate-buffer-make-unique (name)
+  "When the requested buffer NAME exists, create another buffer."
+  (get-buffer-create (generate-new-buffer-name name)))
+
+(provide 'rudel-interactive)
+;;; rudel-interactive.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-loaddefs.el b/emacs.d/lisp/rudel/rudel-loaddefs.el
new file mode 100644
index 0000000..9de8708
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-loaddefs.el
@@ -0,0 +1,23 @@
+;;; rudel-loaddefs.el
+
+(autoload 'rudel-join-session "rudel" "Start a collaborative Rudel session" t)
+(autoload 'rudel-host-session "rudel" "Host a collaborative Rudel session" t)
+(autoload 'rudel-speedbar "rudel-speedbar"
+  "Show connected users and documents for the Rudel session in speedbar" t)
+(autoload 'global-rudel-minor-mode "rudel-mode"
+  "Bindings for rudel session-level commands" t)
+
+(global-set-key (kbd "C-c c j") 'rudel-join-session)
+
+(setq rudel-dir (file-name-directory (or (buffer-file-name) load-file-name)))
+
+(dolist (dir '("." "jupiter" "obby" "zeroconf"))
+  (add-to-list 'load-path (concat rudel-dir "/" dir)))
+
+(eval-after-load 'rudel
+  '(progn (global-rudel-minor-mode)
+          (require 'rudel-obby)
+          (when (require 'zeroconf nil t)
+            (require 'rudel-zeroconf))))
+
+(provide 'rudel-loaddefs)
\ No newline at end of file
diff --git a/emacs.d/lisp/rudel/rudel-mode.el b/emacs.d/lisp/rudel/rudel-mode.el
new file mode 100644
index 0000000..182188a
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-mode.el
@@ -0,0 +1,621 @@
+;;; rudel-mode.el --- Global and buffer-local Rudel minor modes
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, mode
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the following global and buffer-local Rudel
+;; minor modes:
+;;
+;; + `rudel-header-subscriptions-minor-mode': Display subscribed users
+;;   and their respective status in the header line
+;; + `rudel-mode-line-publish-state-minor-mode': Display publication
+;;   state of buffers in their mode lines
+;; + `global-rudel-minor-mode': Installs a keymap and a Rudel menu
+
+
+;;; History:
+;;
+;; 0.4 - Display buffer publication state in mode line.
+;;
+;; 0.3 - Display subscriptions in header line.
+;;
+;; 0.2 - Use define-minor-mode.
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'easy-mmode)
+(require 'easymenu)
+
+(require 'rudel)
+(require 'rudel-hooks)
+
+
+;;; Customization Options
+;;
+
+(defcustom rudel-header-subscriptions-use-images t
+  "Use images when displaying subscribed users in header-line."
+  :group 'rudel
+  :type  'boolean
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-header-subscriptions--options-changed))))
+
+(defcustom rudel-header-subscriptions-separator " "
+  "String used to separate indicator strings of subscribed users."
+  :group 'rudel
+  :type  'string
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-header-subscriptions--options-changed))))
+
+(defcustom rudel-mode-line-publish-state-unpublished-string "-"
+  "String used to indicate not published state in the mode line."
+  :group 'rudel
+  :type  'string
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-mode-line-publish-state--options-changed))))
+
+(defcustom rudel-mode-line-publish-state-published-string "P"
+  "String used to indicate published state in the mode line."
+  :group 'rudel
+  :type  'string
+  :set   (lambda (symbol value)
+	   (set-default symbol value)
+	   (when (featurep 'rudel-mode)
+	     (rudel-mode-line-publish-state--options-changed))))
+
+(dolist (v '(rudel-header-subscriptions-use-images
+             rudel-header-subscriptions-separator
+             rudel-mode-line-publish-state-unpublished-string
+             rudel-mode-line-publish-state-published-string))
+  (put v 'save-local-variable t))
+
+
+;;; Header line subscriptions helper functions
+;;
+
+(defun rudel-header-subscriptions--make-format (document)
+  "Return a Lisp object usable as `header-line-format' generated from DOCUMENT."
+  (with-slots (subscribed) document
+    (mapconcat
+     (lambda (user)
+       (rudel-display-string
+	user rudel-header-subscriptions-use-images))
+     subscribed rudel-header-subscriptions-separator)))
+
+(defun rudel-header-subscriptions--update-from-document (document)
+  "Update header-line of the buffer attached to DOCUMENT."
+  (with-slots (buffer) document
+    (when buffer
+      (with-current-buffer buffer
+	(setq header-line-format
+	      (rudel-header-subscriptions--make-format document))
+	(force-mode-line-update)))))
+
+(defun rudel-header-subscriptions--update-from-buffer ()
+  "Update header-line of the current buffer from associated document."
+  (setq header-line-format
+	(when (rudel-buffer-document)
+	  (rudel-header-subscriptions--make-format
+	   (rudel-buffer-document))))
+  (force-mode-line-update))
+
+(defun rudel-header-subscriptions--options-changed ()
+  "Update headers in buffers that have header subscriptions mode enabled."
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (when rudel-header-subscriptions-minor-mode
+	(rudel-header-subscriptions--update-from-buffer)))))
+
+
+;;; Header line indication of users' status and activities
+;;
+
+(defun rudel-header-subscriptions--user-change (document user)
+  "Update header line after USER changed."
+  ;; Update the header line to reflect the changes to USER.
+  (rudel-header-subscriptions--update-from-document document))
+
+(defun rudel-header-subscriptions--add-user (document user)
+  "Start monitoring USER and update header line."
+  ;; Monitor USER.
+  (lexical-let ((document document))
+    (object-add-hook user 'change-hook
+		     (lambda (user)
+		       (rudel-header-subscriptions--user-change
+			document user))))
+
+  ;; Update the header line once to get the user added.
+  (rudel-header-subscriptions--update-from-document document)
+  )
+
+(defun rudel-header-subscriptions--remove-user (document user)
+  "Stop monitoring USER and update header line."
+  ;; TODO Stop monitoring USER.
+  ;; (object-remove-hook user 'change-hook
+
+  ;; Update the header line once to get the user removed.
+  (rudel-header-subscriptions--update-from-document document)
+  )
+
+;;;###autoload
+(define-minor-mode rudel-header-subscriptions-minor-mode
+  "Toggle Rudel header subscriptions minor mode.
+
+This mode displays users subscribed to the document associated
+with the buffer in the header-line. Depending on the kind of
+session, additional information like connection status,
+encryption or activity indication may be displayed with each
+user.
+
+If ARG is null, toggle Rudel header subscriptions mode.
+If ARG is a number greater than zero, turn on Rudel header
+subscriptions mode; otherwise, turn it off."
+  :init-value nil
+  :group      'rudel
+  (cond
+   ;; Emacs session is not interactive
+   (noninteractive
+    (setq rudel-header-subscriptions-minor-mode nil))
+
+   ;; Mode is being enabled and the buffer has an attached document.
+   ((and rudel-header-subscriptions-minor-mode
+	 (rudel-buffer-document))
+    (let ((document (rudel-buffer-document)))
+
+      ;; Monitor all users that already are subscribed to the
+      ;; document.
+      (with-slots (subscribed) document
+	(dolist (user subscribed)
+	  (rudel-header-subscriptions--add-user document user)))
+
+      ;; Monitor future (un)subscribe events.
+      (object-add-hook document 'subscribe-hook
+		       #'rudel-header-subscriptions--add-user)
+      (object-add-hook document 'unsubscribe-hook
+		       #'rudel-header-subscriptions--remove-user))
+
+    ;; Update header line.
+    (rudel-header-subscriptions--update-from-buffer))
+
+   ;; Mode is being disabled, but the buffer has an attached document.
+   ((and (not rudel-header-subscriptions-minor-mode)
+	 (rudel-buffer-document))
+    (let ((document (rudel-buffer-document)))
+
+      ;; Stop monitoring all users that are subscribed to the
+      ;; document.
+      (with-slots (subscribed) document
+	(dolist (user subscribed)
+	  (rudel-header-subscriptions--remove-user document user)))
+
+      ;; Stop monitoring (un)subscribe events.
+      (object-remove-hook document 'subscribe-hook
+			  #'rudel-header-subscriptions--add-user)
+      (object-remove-hook document 'unsubscribe-hook
+			  #'rudel-header-subscriptions--remove-user))
+
+    ;; Reset header line to default format.
+    (setq header-line-format default-header-line-format)
+    (force-mode-line-update)) ;; TODO remove all handlers
+
+   ;; No buffer document
+   (t
+    ;; Ensure the mode is disabled.
+    (setq rudel-header-subscriptions-minor-mode nil)
+
+    ;; Reset header line to default format.
+    (setq header-line-format default-header-line-format)
+    (force-mode-line-update)))
+  )
+
+
+;;; Global header subscriptions mode
+;;
+
+;; Tracking stuff for the global mode
+
+(defun rudel-header-subscriptions--attach (document buffer)
+  "Activate header subscriptions mode for BUFFER."
+  (with-current-buffer buffer
+    (rudel-header-subscriptions-minor-mode 1)))
+
+(defun rudel-header-subscriptions--detach (document buffer)
+  "Deactivate header subscriptions mode for BUFFER."
+  (with-current-buffer buffer
+    (rudel-header-subscriptions-minor-mode 0)))
+
+(defun rudel-header-subscriptions--add-document (session document)
+  "Watch DOCUMENT for attach/detach events."
+  ;; When document is attached to a buffer, turn the mode on.
+  (with-slots (buffer) document
+    (when buffer
+      (rudel-header-subscriptions--attach document buffer)))
+
+  ;; Watch document for attaching and detaching.
+  (object-add-hook
+   document 'attach-hook #'rudel-header-subscriptions--attach)
+  (object-add-hook
+   document 'detach-hook #'rudel-header-subscriptions--detach))
+
+(defun rudel-header-subscriptions--remove-document (session document)
+  "Stop watching DOCUMENT for attach/detach events."
+  ;; When document is attached to a buffer, turn the mode off.
+  (with-slots (buffer) document
+    (when buffer
+      (rudel-header-subscriptions--detach document buffer)))
+
+  ;; Stop watching document for attaching and detaching.
+  (object-remove-hook
+   document 'attach-hook #'rudel-header-subscriptions--attach)
+  (object-remove-hook
+   document 'detach-hook #'rudel-header-subscriptions--detach))
+
+(defun rudel-header-subscriptions--session-start (session)
+  "Watch SESSION documents and watch for added/removed documents."
+  ;; Watch all documents in the session.
+  (with-slots (documents) session
+    (dolist (document documents)
+      (rudel-header-subscriptions--add-document session document)))
+
+  ;; Watch session for added/removed documents.
+  (object-add-hook
+   session 'add-document-hook
+   #'rudel-header-subscriptions--add-document)
+  (object-add-hook
+   session 'remove-document-hook
+   #'rudel-header-subscriptions--remove-document)
+  )
+
+(defun rudel-header-subscriptions--session-end (session)
+  "Stop watching SESSION for added/removed documents."
+  ;; Stop watching all documents in the session.
+  (with-slots (documents) session
+    (dolist (document documents)
+      (rudel-header-subscriptions--remove-document session document)))
+
+  ;; Stop watching session for added/removed documents.
+  (object-remove-hook
+   session 'add-document-hook
+   #'rudel-header-subscriptions--add-document)
+  (object-remove-hook
+   session 'remove-document-hook
+   #'rudel-header-subscriptions--remove-document)
+  )
+
+;;;###autoload
+(define-globalized-minor-mode global-rudel-header-subscriptions-mode
+  rudel-header-subscriptions-minor-mode
+  rudel-header-subscriptions-minor-mode
+  :group 'rudel)
+
+(defadvice global-rudel-header-subscriptions-mode
+  (around track-subscriptions activate)
+  "Start/stop tracking subscriptions when the mode is (de)activated."
+  (let ((value ad-do-it))
+    (if value
+
+	;; Add handlers to session start and end hooks and run the
+	;; start handler on already started sessions.
+	(progn
+
+	  ;; Go through all existing sessions.
+	  (mapc #'rudel-header-subscriptions--session-start
+		(when rudel-current-session
+		  (list rudel-current-session)))
+
+	  ;; Watch for new/ended sessions.
+	  (add-hook 'rudel-session-start-hook
+		    #'rudel-header-subscriptions--session-start)
+	  (add-hook 'rudel-session-end-hook
+		    #'rudel-header-subscriptions--session-end))
+
+      ;; Remove handlers from session start and end hooks and run the
+      ;; end handler on active sessions.
+      (mapc #'rudel-header-subscriptions--session-end
+	    (when rudel-current-session
+	      (list rudel-current-session)))
+
+      (remove-hook 'rudel-session-start-hook
+		   #'rudel-header-subscriptions--session-start)
+      (remove-hook 'rudel-session-end-hook
+		   #'rudel-header-subscriptions--session-end)))
+  )
+
+
+;;; Mode line indication of buffer state
+;;
+
+(defvar rudel-mode-line-publish-state-string
+  (propertize
+   "-"
+   'mouse-face 'mode-line-highlight
+   'help-echo  "Buffer is not published")
+  "Contains a mode line fragment indicating the publication state
+of the buffer.")
+(make-variable-buffer-local 'rudel-mode-line-publish-state-string)
+(put 'rudel-mode-line-publish-state-string 'risky-local-variable t)
+
+(defun rudel-mode-line-publish-state--add-indicator-to-mode-line ()
+  "Add Rudel publish state indicator to mode line."
+  (let* ((new-format      (copy-list mode-line-format))
+         (format-rest     (nthcdr
+                           (position 'mode-line-modified mode-line-format)
+                           new-format))
+         (format-rest-cdr (cdr format-rest)))
+    (setcdr format-rest (cons 'rudel-mode-line-publish-state-string
+			      format-rest-cdr))
+    (setq mode-line-format new-format))
+  (force-mode-line-update))
+
+(defun rudel-mode-line-publish-state--remove-indicator-from-mode-line ()
+  "Remove Rudel publish state indicator from mode line."
+  (let ((format-rest (nthcdr
+		      (position 'mode-line-remote mode-line-format)
+		      mode-line-format)))
+    ;; Only change the mode line if our indicator is present.
+    (when (eq (second format-rest) 'rudel-mode-line-publish-state-string)
+      (setcdr format-rest (cddr format-rest))
+      (force-mode-line-update))))
+
+(defun rudel-mode-line-publish-state--update-string ()
+  "Update variable `rudel-mode-line-publish-state-string'."
+  ;; Update `rudel-mode-line-publish-state-string' with appropriate
+  ;; propertized indicator string.
+  (setq rudel-mode-line-publish-state-string
+	(cond
+	 ((rudel-buffer-document)
+	  (propertize
+	   rudel-mode-line-publish-state-published-string
+	   'mouse-face 'mode-line-highlight
+	   'help-echo  "Buffer is published"))
+	 (t
+	  (propertize
+	   rudel-mode-line-publish-state-unpublished-string
+	   'mouse-face 'mode-line-highlight
+	   'help-echo  "Buffer is not published"))))
+
+  ;; Update the mode line.
+  (force-mode-line-update)
+  )
+
+(defun rudel-mode-line-publish-state--document-attach (document buffer)
+  "Handle attaching of DOCUMENT to BUFFER.
+When `rudel-mode-line-publish-state-minor-mode' is enabled in
+BUFFER, update the state string."
+  ;; Only act when BUFFER has the minor mode enabled.
+  (with-current-buffer buffer
+    (when rudel-mode-line-publish-state-minor-mode
+      ;; Update the mode line.
+      (rudel-mode-line-publish-state--update-string)
+
+      ;; Watch for detaching of DOCUMENT from BUFFER.
+      (object-add-hook
+       document 'detach-hook
+       #'rudel-mode-line-publish-state--document-detach)))
+  )
+
+(defun rudel-mode-line-publish-state--document-detach (document buffer)
+  "Handle detaching of DOCUMENT from BUFFER."
+  ;; Update the mode line of BUFFER.
+  (with-current-buffer buffer
+    (rudel-mode-line-publish-state--update-string))
+
+  ;; Stop watching for detaching of DOCUMENT from BUFFER. It (or a
+  ;; different document) has to attach again first, before the next
+  ;; detaching can occur.
+  (object-remove-hook
+   document 'detach-hook
+   #'rudel-mode-line-publish-state--document-detach)
+  )
+
+(defun rudel-mode-line-publish-state--options-changed ()
+  "Update mode lines in buffers that have mode line publish state mode enabled."
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (when rudel-mode-line-publish-state-minor-mode
+	(rudel-mode-line-publish-state--update-string)))))
+
+;;;###autoload
+(define-minor-mode rudel-mode-line-publish-state-minor-mode
+  "Toggle Rudel mode line publish state minor mode.
+
+This mode displays an indicator of the buffer's state with
+respect to an associated Rudel document in the mode line. If the
+buffer has an attached document, the string \"P\" is displayed
+after the remote file indicator. Otherwise, the string \"-\" is
+displayed.
+
+If ARG is null, toggle Rudel mode line publish state minor mode.
+If ARG is a number greater than zero, turn on Rudel minor mode
+line publish state mode; otherwise, turn it off."
+  :init-value nil
+  :group      'rudel
+  (cond
+   ;; Emacs session is not interactive
+   (noninteractive
+    (setq rudel-mode-line-publish-state-minor-mode nil))
+
+   ;; Mode is enabled
+   (rudel-mode-line-publish-state-minor-mode
+    ;; Extend and update the mode line, no matter whether the buffer
+    ;; has a document or not.
+    (rudel-mode-line-publish-state--add-indicator-to-mode-line)
+    (rudel-mode-line-publish-state--update-string)
+
+    ;; Watch document, if available or attach events, when a document
+    ;; is not available.
+    (let ((document (rudel-buffer-document)))
+      (if document
+	  ;; Handle detaching of the document from the buffer.
+	  (object-add-hook
+	   document 'detach-hook
+	   #'rudel-mode-line-publish-state--document-detach)
+	;; Handle attaching of documents to buffers. We use the global
+	;; hook here, installing the handler twice is prevented by
+	;; `add-hook'.
+	(add-hook 'rudel-document-attach-hook
+		  #'rudel-mode-line-publish-state--document-attach))))
+
+   ;; Mode is disabled
+   (t
+    ;; Maybe stop watching for the document detaching from the buffer.
+    (let ((document (rudel-buffer-document)))
+      (when document
+	(object-remove-hook
+	 document 'detach-hook
+	 #'rudel-mode-line-publish-state--document-detach)))
+
+    ;; Remove the indicator from the mode line.
+    (rudel-mode-line-publish-state--remove-indicator-from-mode-line)))
+  )
+
+
+;;; Global mode line publish state mode
+;;
+
+;;;###autoload
+(define-globalized-minor-mode global-rudel-mode-line-publish-state-mode
+  rudel-mode-line-publish-state-minor-mode
+  rudel-mode-line-publish-state-minor-mode
+  :group 'rudel)
+
+
+;;; Global Rudel mode, menu and keymap
+;;
+
+(defvar rudel-minor-keymap
+  (let ((map     (make-sparse-keymap))
+	(sub-map (make-sparse-keymap)))
+    ;; Define sub keymap
+    (define-key sub-map "j" #'rudel-join-session)
+    (define-key sub-map "h" #'rudel-host-session)
+    (define-key sub-map "e" #'rudel-end-session)
+
+    (define-key sub-map "c" #'rudel-change-color)
+
+    (define-key sub-map "p" #'rudel-publish-buffer)
+    (define-key sub-map "u" #'rudel-unpublish-buffer)
+    (define-key sub-map "s" #'rudel-subscribe)
+
+    ;; Bind the sub keymap into map
+    (define-key map "\C-cc" sub-map)
+    map)
+  "Keymap used in Rudel minor mode.")
+
+(when rudel-minor-keymap
+  (easy-menu-define
+    rudel-minor-menu rudel-minor-keymap "Rudel Minor Mode Menu"
+    '("Rudel"
+      [ "Join Session"             rudel-join-session
+	                           (not rudel-current-session) ]
+      [ "Leave Session"            rudel-end-session
+	                           rudel-current-session ]
+      "---"
+      [ "Host a Session"           rudel-host-session
+	                           t ]
+      "---"
+      [ "Change Color"             rudel-change-color
+	                           (and rudel-current-session
+					(rudel-capable-of-p
+					 (oref rudel-current-session :backend)
+					 'change-color)) ] ; TODO bulky
+      "---"
+      [ "Publish current Buffer"   rudel-publish-buffer
+	                           (and rudel-current-session
+					(not (rudel-buffer-has-document-p))) ]
+      [ "Unpublish current Buffer" rudel-unpublish-buffer
+	                           (rudel-buffer-has-document-p) ]
+      [ "Subscribe to Document"    rudel-subscribe
+	                           rudel-current-session ]
+      "---"
+      [ "Rudel Overview"           rudel-speedbar
+	                           t ]
+      "---"
+      ( "Options"
+	[ "Highlight Contributions in Authors' Colors"
+	  (lambda ()
+	    (interactive)
+	    (setq rudel-overlay-author-display
+		  (not rudel-overlay-author-display))
+	    (rudel-overlay-options-changed))
+	  :style    toggle
+	  :selected rudel-overlay-author-display ]
+	( "Show subscribed Users"
+	  [ "In this Buffer"
+	    rudel-header-subscriptions-minor-mode
+	    :style    toggle
+	    :selected rudel-header-subscriptions-minor-mode ]
+	  [ "Globally"
+	    global-rudel-header-subscriptions-mode
+	    :style    toggle
+	    :selected global-rudel-header-subscriptions-mode ] )
+	( "Show Status in mode line"
+	  [ "In this Buffer"
+	    rudel-mode-line-publish-state-minor-mode
+	    :style    toggle
+	    :selected rudel-mode-line-publish-state-minor-mode ]
+	  [ "Globally"
+	    global-rudel-mode-line-publish-state-mode
+	    :style    toggle
+	    :selected global-rudel-mode-line-publish-state-mode ] ) ) )
+    )
+  )
+
+;;;###autoload
+(define-minor-mode global-rudel-minor-mode
+  "Toggle global Rudel minor mode (No modeline indicator).
+
+If ARG is null, toggle global Rudel mode.
+If ARG is a number greater than zero, turn on global Rudel mode;
+otherwise, turn it off."
+  :init-value nil
+  :keymap     rudel-minor-keymap
+  :global     t
+  :group      'rudel
+  (cond
+   ;; Emacs session is not interactive
+   (noninteractive
+    (setq global-rudel-minor-mode nil))
+
+   ;; Mode is enabled
+   (global-rudel-minor-mode
+    )
+
+   ;; Mode is disabled
+   (t
+    ))
+  )
+
+(provide 'rudel-mode)
+;;; rudel-mode.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-operations.el b/emacs.d/lisp/rudel/rudel-operations.el
new file mode 100644
index 0000000..3637303
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-operations.el
@@ -0,0 +1,133 @@
+;;; rudel-operations.el --- Rudel domain operations
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, operations
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains classes representing operations like insertions
+;; and deletions, that are import for Rudel's domain of collaborative
+;; editing.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+
+;;; Class rudel-operation
+;;
+
+(defclass rudel-operation ()
+  ()
+  "Abstract base class for operations."
+  :abstract t)
+
+(defgeneric rudel-apply ((this rudel-operation) object)
+  "Apply the change represented by THIS to OBJECT.")
+
+
+;;; Class rudel-insert-op
+;;
+
+;; TODO should be rudel-insert but there is a method of the same name
+(defclass rudel-insert-op (rudel-operation)
+  ((from :initarg :from
+	 :type    (or null (integer 0))
+	 :documentation
+	 "Start of the region affected by this operation or
+nil. nil means end of buffer")
+   (data :initarg :data
+	 :type    string
+	 :documentation
+	 "The inserted string."))
+  "Objects of this class represent insertion operations.")
+
+(defmethod rudel-apply ((this rudel-insert-op) object)
+  "Apply THIS to OBJECT by inserting the associated data."
+  (with-slots (from data) this
+    (rudel-insert object from data)))
+
+(defmethod slot-missing ((this rudel-insert-op)
+			 slot-name operation &optional new-value)
+  "Simulate read-only slots :length and :to."
+  (cond
+   ;; Slot :length
+   ((and (or (eq slot-name :length)
+	     (eq slot-name 'length))
+	 (eq operation 'oref))
+    (with-slots (data) this
+      (length data)))
+   ;; Slot :to
+   ((and (or (eq slot-name :to)
+	     (eq slot-name 'to))
+	 (eq operation 'oref))
+    (with-slots (from length) this
+      (+ from length)))
+   ;; Call next method
+   (t (call-next-method)))
+  )
+
+
+;;; Class rudel-delete-op
+;;
+
+;; TODO should be rudel-delete but there is a method of the same name
+(defclass rudel-delete-op (rudel-operation)
+  ((from :initarg :from
+	 :type    (integer 0)
+	 :documentation
+	 "Start of the region affected by this operation.")
+   (to   :initarg :to
+	 :type    (integer 0)
+	 :documentation
+	 "End of the region affected by this operation."))
+  "Objects of this class represent deletion operations.")
+
+(defmethod rudel-apply ((this rudel-delete-op) object)
+  "Apply THIS to OBJECT by deleting the associated region."
+  (with-slots (from length) this
+    (rudel-delete object from length)))
+
+(defmethod slot-missing ((this rudel-delete-op)
+			 slot-name operation &optional new-value)
+  "Simulate slot :length"
+  (cond
+   ;; Slot :length
+   ((or (eq slot-name :length)
+	(eq slot-name 'length))
+    (with-slots (from to) this
+      (if (eq operation 'oref)
+	  (- to from)
+	(setq to (+ from new-value)))))
+   ;; Call next method
+   (t (call-next-method)))
+  )
+
+(provide 'rudel-operations)
+;;; rudel-operations.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-operators.el b/emacs.d/lisp/rudel/rudel-operators.el
new file mode 100644
index 0000000..e51982e
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-operators.el
@@ -0,0 +1,172 @@
+;;; rudel-operators.el --- Sets of modification operators for Rudel objects
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, operators
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Collections of operations on specific objects are collected into
+;; classes. Current there are
+;;
+;; - rudel-document-operators: realize operations on document objects
+;;
+;; - rudel-connection-operators: realize operations on connection
+;;   objects
+;;
+;; - rudel-overlay-operators: realize operations by altering the
+;;   overlays of buffer objects
+;;
+;; - rudel-hook-operators: realize operations by calling hooks
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-overlay)
+
+
+;;; Class rudel-document-operators
+;;
+
+(defclass rudel-document-operators ()
+  ((document :initarg  :document
+	     :type     rudel-document-child
+	     :documentation
+	     "Document to which modification operators are
+applied."))
+  "Provides operation methods which modify an associated document.")
+
+(defmethod rudel-insert ((this rudel-document-operators) position data)
+  "Insert DATA at POSITION into the document attached to THIS."
+  (with-slots (document) this
+    (rudel-insert document position data)))
+
+(defmethod rudel-delete ((this rudel-document-operators) position length)
+  "Delete a region of LENGTH characters at POSITION from the document attached to THIS."
+  (with-slots (document) this
+    (rudel-delete document position length)))
+
+
+;;; Class rudel-connection-operators
+;;
+
+(defclass rudel-connection-operators ()
+  ((connection :initarg :connection
+	       :type    rudel-connection-child
+	       :documentation
+	       "Connection on which the operations are
+performed.")
+   (document   :initarg :document
+	       :type    rudel-document-child
+	       :documentation
+	       "Document object to which operations refer."))
+  "Provides operation methods which affect an associated
+connection.")
+
+(defmethod rudel-insert ((this rudel-connection-operators) position data)
+  "Notify the connection associated to THIS of the insertion of DATA at POSITION."
+  (with-slots (connection document) this
+    (rudel-local-insert connection document position data)))
+
+(defmethod rudel-delete ((this rudel-connection-operators) position length)
+  "Notify the connection associated to THIS of a deletion of LENGTH at POSITION."
+  (with-slots (connection document) this
+    (rudel-local-delete connection document position length)))
+
+
+;;; Class rudel-overlay-operators
+;;
+
+(defclass rudel-overlay-operators ()
+  ((document :initarg  :document
+	     :type     rudel-document-child
+	     :documentation
+	     "The document to the overlays of which the
+operations are applied")
+   (user     :initarg  :user
+	     :type     rudel-user-child
+	     :documentation
+	     "The user object associated to operations."))
+  "Provides operation methods which affect the overlays of a
+buffer.")
+
+(defmethod rudel-insert ((this rudel-overlay-operators) position data)
+  "Update the overlays associated to THIS to incorporate an insertion of DATA at POSITION."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+
+      ;; Since we inserted something, (point-max) is at least the
+      ;; length of the insertion + 1. So we can safely subtract the
+      ;; length of the insertion and 1.
+      (unless position
+	(with-current-buffer buffer
+	  (setq position (- (point-max) (length data) 1))))
+	
+
+      (rudel-update-author-overlay-after-insert
+       buffer (+ position 1) (length data) user)))
+  )
+
+(defmethod rudel-delete ((this rudel-overlay-operators) position length)
+  "Update the overlays associated to THIS to incorporate a deletion of LENGTH at POSITION."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+      (rudel-update-author-overlay-after-delete
+       buffer (+ position 1) length user))))
+
+
+;;; Class rudel-hook-operators
+;;
+
+(defclass rudel-hook-operators ()
+  ((document :initarg  :document
+	     :type     rudel-document-child
+	     :documentation
+	     "The document object to which operations refer.")   
+   (user     :initarg  :user
+	     :type     rudel-user-child
+	     :documentation
+	     "The user object associated to operations."))
+  "Provides operation methods which cause corresponding hooks to
+be called.")
+
+(defmethod rudel-insert ((this rudel-hook-operators) position data)
+  "Call insert hook associated to THIS with POSITION and DATA."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+      (run-hook-with-args 'rudel-insert-hook buffer user position data))))
+
+(defmethod rudel-delete ((this rudel-hook-operators) position length)
+  "Call delete hook associated to THIS with POSITION and LENGTH."
+  (with-slots (document user) this
+    (with-slots (buffer) document
+      (run-hook-with-args 'rudel-delete-hook buffer user position length))))
+
+(provide 'rudel-operators)
+;;; rudel-operators.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-overlay.el b/emacs.d/lisp/rudel/rudel-overlay.el
new file mode 100644
index 0000000..093afdf
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-overlay.el
@@ -0,0 +1,275 @@
+;;; rudel-overlay.el --- Overlay functions for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, overlay
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'custom)
+
+(eval-when-compile
+  (require 'cl))
+
+
+;;; Rudel overlay faces
+;;
+
+(defcustom rudel-overlay-author-display t
+  "Indicate authorship by setting text color to user color."
+  :group   'rudel
+  :type    'boolean
+  :set     (lambda (symbol value)
+	     (set-default symbol value)
+	     (when (featurep 'rudel-overlay)
+	       (rudel-overlay-options-changed))))
+
+(put 'rudel-overlay-author-display 'safe-local-variable t)
+
+(defface rudel-author-overlay-face
+  '((default (:background "black")))
+  "*Face used to highlight contributions according to their authors.
+Attributes involving color are not applied literally. Instead the
+color is replaced with the color associated with the respective
+author."
+  :group 'rudel)
+
+
+;;; General overlay functions
+;;
+
+(defun rudel-overlay-p (overlay)
+  "Non-nil if OVERLAY is a Rudel overlay."
+  (overlay-get overlay :rudel))
+
+(defun rudel-overlay-length (overlay)
+  "Distance between end and start of OVERLAY."
+  (- (overlay-end overlay) (overlay-start overlay)))
+
+(defun rudel-overlay-user (overlay)
+  "User object associated to OVERLAY."
+  (overlay-get overlay :user))
+
+(defun rudel-overlays (&optional predicate)
+  "Return a list of Rudel-related overlays or overlays satisfying PREDICATE.
+If PREDICATE is non-nil returned overlays satisfy PREDICATES;
+Otherwise all Rudel-related overlays are returned."
+  (unless predicate
+    (setq predicate #'rudel-overlay-p))
+
+  (let* ((overlay-lists (overlay-lists))
+	 (overlays      (append (car overlay-lists)
+				(cdr overlay-lists))))
+    (remove-if-not predicate overlays))
+  )
+
+(defun rudel-overlays-at (position &optional predicate)
+  "Return a list of Rudel-related overlays at POSITION.
+If PREDICATE is non-nil returned overlays satisfy PREDICATES;
+Otherwise all Rudel-related overlays are returned."
+  (unless predicate
+    (setq predicate #'rudel-overlay-p))
+  (remove-if-not predicate (overlays-at position)))
+
+(defun rudel-overlays-in (start end &optional predicate)
+  "Return a list of Rudel-related overlays in the range START to END.
+If PREDICATE is non-nil returned overlays satisfy PREDICATES;
+Otherwise all Rudel-related overlays are returned."
+  (unless predicate
+    (setq predicate #'rudel-overlay-p))
+  (remove-if-not predicate (overlays-in start end)))
+
+(defun rudel-overlays-remove-all ()
+  "Remove all Rudel overlays from the current buffer."
+  (mapc #'delete-overlay (rudel-overlays)))
+
+
+;;; Author overlay
+;;
+
+(defun rudel-author-overlay-p (overlay)
+  "Predicate for author overlays."
+  (eq (overlay-get overlay :rudel) 'author))
+
+(defun rudel-author-overlays ()
+  "Return the list of author overlays in the current buffer."
+  (rudel-overlays #'rudel-author-overlay-p))
+
+(defun rudel-author-overlay-at (position &optional author)
+  ""
+  (let ((overlays (rudel-overlays-at
+		   position #'rudel-author-overlay-p)))
+    ;; There can only be one rudel overlay at any given position
+    (when overlays
+      (when (or (not author)
+		(eq (rudel-overlay-user (car overlays)) author))
+	(car overlays))))
+  )
+
+(defun rudel-author-overlays-in (start end &optional author)
+  ""
+  (rudel-overlays-in
+   start end
+   (lambda (overlay)
+     (and (rudel-overlay-p overlay)
+	  (or (not author)
+	      (eq (rudel-overlay-user overlay) author)))))
+  )
+
+(defun rudel-make-author-overlay (buffer from to author)
+  "Make and return an overlay for the range FROM to TO in BUFFER suitable for contributions by AUTHOR.
+AUTHOR has to be an object of type rudel-user-child."
+  (let ((overlay (make-overlay from to buffer t)))
+    (rudel-overlay-author-set-properties overlay author)
+    overlay))
+
+(defun rudel-overlay-author-set-properties (overlay author)
+  "Set properties of OVERLAY according to slots of AUTHOR.
+AUTHOR has to be an object of type rudel-user-child."
+  (with-slots ((name :object-name) color) author
+    (overlay-put overlay :rudel     'author)
+    (overlay-put overlay :user      author)
+    (overlay-put overlay 'face      (when rudel-overlay-author-display
+				      (rudel-overlay-make-face
+				       (rudel-overlay-make-face-symbol
+					'author name)
+				       'rudel-author-overlay-face
+				       color)))
+    (overlay-put overlay 'help-echo (when rudel-overlay-author-display
+				      (format "Written by %s" name))))
+  )
+
+(defun rudel-overlay-author-update (overlay)
+  "Update properties of OVERLAY from its attached user object."
+  (let ((author (rudel-overlay-user overlay)))
+    (rudel-overlay-author-set-properties overlay author)))
+
+
+;;; Update functions for author overlays
+;;
+
+(defun rudel-update-author-overlay-after-insert (buffer position length author)
+  "Update author overlays in BUFFER to incorporate an insertion of length LENGTH at POSITION by AUTHOR.
+POSITION refers to an Emacs buffer position.
+AUTHOR has to be an object of type rudel-author-child."
+  (when author
+    (with-current-buffer buffer
+      (let* ((end    (+ position length))
+	     (before (when (> position 1)
+		       (rudel-author-overlay-at (- position 1) author)))
+	     (at     (rudel-author-overlay-at position))
+	     (after  (when (< end (point-max))
+		       (rudel-author-overlay-at (+ end 1) author))))
+	(cond
+	 ;; If there is an overlay, we have to split it unless the
+	 ;; author is AUTHOR or we are on its boundary.
+	 (at
+	  (unless (eq (rudel-overlay-user at) author)
+	    (let* ((on-start (= (overlay-start at) position))
+		   (on-end   (= (- (overlay-end at) 1) position))
+		   (before (unless on-start
+			     (if on-end at (copy-overlay at))))
+		   (after  (unless on-end at)))
+	      (when before
+		(move-overlay before (overlay-start before) position))
+	      (when after
+		(move-overlay after end (overlay-end after)))
+	      (rudel-make-author-overlay buffer position end author))))
+	 ;; There is no overlay under the insert, but there are
+	 ;; overlays of the same author immediately before and after
+	 ;; the insert. We merge these two into one large overlay
+	 ;; including the insert.
+	 ((and before after)
+	  (let ((end (overlay-end after)))
+	    (delete-overlay after)
+	    (move-overlay before (overlay-start before) end)))
+	 ;; If there is an overlay of the same author before the
+	 ;; insert, we extend it.
+	 (before
+	  (move-overlay before (overlay-start before) end))
+	 ;; If there is an overlay of the same author after the
+	 ;; insert, we extend it.
+	 (after
+	  (move-overlay after position (overlay-end after)))
+	 ;; If there are no overlays at all, we create a suitable one.
+	 (t
+	  (rudel-make-author-overlay buffer position end author))))))
+  )
+
+(defun rudel-update-author-overlay-after-delete (buffer position length author)
+  "Update author overlays in BUFFER to incorporate a deletion of length LENGTH at POSITION by AUTHOR.
+POSITION refers to an Emacs buffer position.
+AUTHOR has to be an object of type rudel-author-child."
+  (with-current-buffer buffer
+    (mapc
+     (lambda (overlay)
+       (when (zerop (rudel-overlay-length overlay))
+	 (delete-overlay overlay)))
+     (rudel-author-overlays-in position position)))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-overlay-make-face-symbol (category name)
+  "Allocate a symbol for a face for CATEGORY and NAME."
+  (intern (format "rudel-%s-overlay-%s-face"
+		  (if (stringp category)
+		      category
+		    (symbol-name category))
+		  name)))
+
+(defun rudel-overlay-make-face (face template color)
+  "Copy TEMPLATE to FACE and replace color attributes with COLOR.
+TEMPLATE has to be a face. FACE can be nil or a face. In the
+latter case, FACE is returned unmodified."
+  (unless (facep face)
+    (make-face face)
+    (copy-face template face)
+    (rudel-overlay-set-face-attributes face color))
+  face)
+
+(defun rudel-overlay-set-face-attributes (face color)
+  "Set color-related attributes of FACE with respect to COLOR."
+  (when (facep face)
+    (dolist (property '(:foreground :background :underline :overline))
+      (unless (eq (face-attribute face property) 'unspecified)
+	(set-face-attribute face nil property color)))))
+
+(defun rudel-overlay-options-changed ()
+  "Update Rudel overlays after a change of customization options."
+  (dolist (buffer (buffer-list))
+    (with-current-buffer buffer
+      (mapc #'rudel-overlay-author-update (rudel-overlays)))))
+
+(provide 'rudel-overlay)
+;;; rudel-overlay.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-protocol.el b/emacs.d/lisp/rudel/rudel-protocol.el
new file mode 100644
index 0000000..c60718c
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-protocol.el
@@ -0,0 +1,83 @@
+;;; rudel-protocol.el --- Interface implemented by Rudel protocol backends
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, backend, protocol
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the interface for Rudel protocol backends.  This
+;; interface consists of the following functions:
+;;
+;; + joining sessions
+;;   + `rudel-ask-join-info'
+;;   + `rudel-join'
+;; + hosting sessions
+;;   + `rudel-ask-host-info'
+;;   + `rudel-host'
+;; + factory functions
+;;   + `rudel-make-document'
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-backend)
+
+
+;;; Class rudel-protocol-backend
+;;
+
+(defclass rudel-protocol-backend (rudel-backend)
+  ()
+  "Interface implemented by protocol backends."
+  :abstract t)
+
+(defgeneric rudel-ask-join-info ((this rudel-protocol-backend))
+  "Retrieve information for joining a session from user.
+Return a property list that contains the collected information.")
+
+(defgeneric rudel-join ((this rudel-protocol-backend) info)
+  "Create a new connection according to the data in the property list INFO.
+Implementations can rely on the fact that the property :session
+contains the `rudel-session' object to which the new connection
+will be associated.")
+
+(defgeneric rudel-ask-host-info ((this rudel-protocol-backend))
+  "Retrieve information for hosting a session from user.
+Return a property list that contains the collected information.")
+
+(defgeneric rudel-host ((this rudel-protocol-backend) info)
+  "Create a new session according to the property list INFO.")
+
+(defgeneric rudel-make-document ((this rudel-protocol-backend)
+				 name session)
+  "Create a new document object named NAME for SESSION.")
+
+(provide 'rudel-protocol)
+;;; rudel-protocol.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-session-initiation.el b/emacs.d/lisp/rudel/rudel-session-initiation.el
new file mode 100644
index 0000000..395ab07
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-session-initiation.el
@@ -0,0 +1,352 @@
+;;; rudel-session-initiation.el --- Session discovery and advertising functions
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, session, initiation, service, discovery, advertising
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Interfaces for session initiation and discovery.
+;;
+;; The central interface is
+;; `rudel-session-initiation-backend'. Backends implementing this
+;; interface can provide methods to discover sessions, to advertise
+;; sessions, or both.
+;;
+;; The client programming interface consists of a priority which is
+;; one of:
+;;
+;; + `primary'
+;; + `fallback'
+;;
+;; and the following functions:
+;;
+;; + `rudel-session-initiation-discover'
+;; + `rudel-session-initiation-advertise'
+;; + `rudel-session-initiation-withdraw'
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel-backend)
+
+
+;;; Customization options
+;;
+
+(defcustom rudel-configured-sessions nil
+  "List of configured sessions.
+
+Each session is described as a plist (a list of keys and values
+see Info node `(elisp)Property Lists'). Keys are specified using
+keywords and look like this: :host, :username, :color. Values are
+mostly strings, but symbols and numbers are possible as well.
+
+The following keys are required for any session:
+
+* :name    (string)
+* :backend (string or symbol)
+
+Other keys are optional and depend on the selected
+backend. Required keys for which no value is specified will be
+prompted for when selecting the session. The values of the :name
+properties have to be distinct for all configured sessions.
+
+Additional keys required by most backends:
+
+* :host     (string)
+* :port     (number)
+* :username (string)
+* :color    (string)
+
+Here is a complete example of customized values for the obby
+backend:
+
+* :name            \"sonian\"
+* :backend         obby
+* :host            \"sobby\"
+* :port            6522
+* :encryption      t
+* :username        \"phil\"
+* :color           \"white\"
+* :global-password \"\"             (this means \"no password\")
+* :user-password   \"\"
+
+The programmatic equivalent looks like this:
+
+(add-to-list 
+ 'rudel-configured-sessions
+ (list :name            \"myserver\"
+       :backend         'obby
+       :host            \"my.sobby-server.net\"
+       :username        user-login-name
+       ;; Use M-x list-colors-display to see color choices.
+       :color           \"white\"
+       :encryption      t 
+       :port            6522
+       ;; empty string means no password
+       :global-password \"\"
+       :user-password   \"\"))"
+  :group 'rudel
+  :type  '(repeat :tag "Connections"
+		  (plist :tag "Connection"
+			 :options ((:name     string)
+				   (:backend  symbol)
+				   (:username string)
+				   (:color    color))))
+  )
+
+
+;;; Variables and constants
+;;
+
+(defvar rudel-session-discovered-hook nil
+  "This hook is run when collaboration sessions are discovered.")
+
+(defvar rudel-session-vanished-hook nil
+  "This hook is run when previously discovered collaboration
+session disappear.")
+
+
+;;; Class rudel-session-initiation-backend
+;;
+
+(defclass rudel-session-initiation-backend (rudel-backend)
+  ((priority :initarg  :priority
+	     :type     symbol
+	     :accessor rudel-priority
+	     :documentation
+	     "Priority of the session initiation method
+implemented by this backend. Has to be either 'primary or
+'fallback"))
+  "Interface implemented by session initiation backends."
+  :abstract t)
+
+(defgeneric rudel-discover ((this rudel-session-initiation-backend))
+  "Return a list of discovered sessions.
+Each list element is a connect info property list. See
+`rudel-join-session' for a description of the format of this
+list.
+
+The presence of an implementation of this generic function should
+be indicated by the presence of the 'discover' capability.")
+
+(defgeneric rudel-advertise ((this rudel-session-initiation-backend) info)
+  "Advertise session described by INFO.
+INFO is a connect info property list. See `rudel-host-session'
+for a description of the format of this list.
+
+The presence of an implementation of this generic function should
+be indicated by the presence of the 'advertise' capability.")
+
+
+;;; Client programming interface functions.
+;;
+
+(defun rudel-session-initiation-suitable-backends (capability)
+  "Return primary and fallback backends that have CAPABILITY.
+The returned list is of the form (PRIMARY FALLBACK), where
+PRIMARY and FALLBACK are lists of backends of the respective
+priority."
+  (let* (;; Select all backends, which can discover sessions
+	 (suitable-backends (rudel-backend-suitable-backends
+			     'session-initiation
+			     (lambda (backend)
+			       (rudel-capable-of-p backend capability))))
+	 ;; Select primary backends
+	 (primary-backends  (remove*
+			     'fallback suitable-backends
+			     :key (lambda (backend)
+				    (rudel-priority (cdr backend)))))
+	 ;; Select fallback backends
+	 (fallback-backends (remove*
+			     'primary suitable-backends
+			     :key (lambda (backend)
+				    (rudel-priority (cdr backend))))))
+    (list primary-backends fallback-backends))
+  )
+
+(defun rudel-session-initiation-discover (&optional backend-name)
+  "Return a list of session using BACKEND-NAME when non-nil.
+BACKEND-NAME is a symbol. When it is non-nil, only the specified
+backend is used to discover session.
+
+The returned list is of the form (INFO-1 ... INFO-N FALLBACK-1
+... FALLBACK-M) where INFO-I are connect info property lists (see
+`rudel-join-session') and FALLBACK-I are conses of the form (NAME
+. CLASS-OR-OBJECT) that specify fallback backends."
+  (multiple-value-bind (primary-backends fallback-backends)
+      (rudel-session-initiation-suitable-backends 'discover)
+    ;; Retrieve session list from primary backend and fall back to
+    ;; fallback backends if the list is empty.
+    (if backend-name
+	(let ((backend (find backend-name fallback-backends :key #'car)))
+	  (rudel-discover (cdr backend)))
+      (let ((primary-results
+	     (remove-if #'null
+			(apply #'append
+			       (mapcar #'rudel-discover
+				       (mapcar #'cdr primary-backends))))))
+	(append primary-results fallback-backends))))
+  )
+
+(defun rudel-session-initiation-advertise (info)
+  "Advertise the session described by INFO.
+INFO is a connect info property list. See `rudel-host-session'
+for a description of the format of this list.
+
+Primary backends are tried first. If none succeeds, fallback
+backends are tried.
+
+The result is non-nil if at least one backend was able to
+advertise the session."
+  (multiple-value-bind (primary-backends fallback-backends)
+      (rudel-session-initiation-suitable-backends 'advertise)
+    (or ;; Try to advertise the session using primary backends.
+        (some (mapcar (lambda (backend)
+			(rudel-advertise backend info))
+		      (mapcar #'cdr primary-backends)))
+	;; When the primary backends fail, try to advertise the
+	;; session using fallback backends
+	(some (mapcar (lambda (backend)
+			(rudel-advertise backend info))
+		      (mapcar #'cdr fallback-backends)))))
+  )
+
+
+;;; Class rudel-ask-protocol-backend
+;;
+
+(defconst rudel-ask-protocol-version '(0 1)
+  "Version of the ask-protocol backend for Rudel.")
+
+;;;###autoload
+(defclass rudel-ask-protocol-backend (rudel-session-initiation-backend)
+  ((capabilities :initform (discover))
+   (priority     :initform fallback))
+  "This fallback backend can \"discover\" sessions by letting the
+user select a suitable backend and asking for connect information
+required by the chosen backend.")
+
+(defmethod initialize-instance ((this rudel-ask-protocol-backend)
+				&rest slots)
+  "Set backend version."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-ask-protocol-version))
+
+(defmethod rudel-discover ((this rudel-ask-protocol-backend))
+  "\"Discover\" sessions by asking the user about the backend to use and the connect info."
+  (let ((backend (rudel-backend-choose
+		  'protocol
+		  (lambda (backend)
+		    (rudel-capable-of-p backend 'join)))))
+    (list (append (list :name    "asked"
+			:backend backend)
+		  (rudel-ask-connect-info (cdr backend)))))
+  )
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'session-initiation)
+		   'ask-protocol 'rudel-ask-protocol-backend)
+
+
+;;; Class rudel-configured-sessions-backend
+;;
+
+(defconst rudel-configured-sessions-version '(0 1)
+  "Version of the configured-sessions backend for Rudel.")
+
+;;;###autoload
+(defclass rudel-configured-sessions-backend
+  (rudel-session-initiation-backend)
+  ((capabilities :initform (discover))
+   (priority     :initform primary))
+  "This fallback backend can \"discover\" sessions the user has
+configured using customization.")
+
+(defmethod initialize-instance ((this rudel-configured-sessions-backend)
+				&rest slots)
+  "Set backend version."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-configured-sessions-version))
+
+(defmethod rudel-discover ((this rudel-configured-sessions-backend))
+  "\"Discover\" sessions the has configured."
+  ;; Iterate over all configured sessions in order to make
+  ;; adjustments.
+  (mapcar #'rudel-session-initiation-adjust-info
+	  rudel-configured-sessions))
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'session-initiation)
+		   'configured-sessions 'rudel-configured-sessions-backend)
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-session-initiation-adjust-info (info)
+  "Resolve arguments that need resolving in INFO."
+  ;; Start with a new, empty property list.
+  (let ((adjusted-info)
+	(key   (car  info))
+	(value (cadr info))
+	(rest  info))
+    ;; Iterate over all properties in INFO.
+    (while rest
+      (setq rest (cddr rest))
+      (cond
+       ;; Resolve backend arguments.
+       ((eq key :backend)
+	(let ((backend (rudel-backend-get 'protocol
+					  (if (stringp value)
+					      (intern value)
+					    value))))
+	  (push backend adjusted-info)
+	  (push key     adjusted-info)))
+       ;; Keep other arguments unmodified.
+       (t
+	(push value adjusted-info)
+	(push key   adjusted-info)))
+      ;; Advance to next key value pair.
+      (setq key   (car  rest)
+	    value (cadr rest)))
+    ;; Return the transformed session information.
+    adjusted-info)
+  )
+
+(provide 'rudel-session-initiation)
+;;; rudel-session-initiation.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-speedbar.el b/emacs.d/lisp/rudel/rudel-speedbar.el
new file mode 100644
index 0000000..8c2caa8
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-speedbar.el
@@ -0,0 +1,214 @@
+;;; rudel-speedbar.el --- Speedbar rendering of Rudel objects
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, collaboration, speedbar
+;; X-RCS: $Id: rudel-speedbar.el,v 1.32 2008/10/10 21:47:28 zappo Exp $
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+;;; Commentary:
+;;
+;; This implements rendering of Rudel objects in speedbar.
+
+
+;;;  History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'speedbar)
+(require 'eieio-speedbar)
+
+
+;;; Class rudel-user methods
+;;
+
+(defmethod eieio-speedbar-description ((this rudel-user))
+  "Provide a speedbar description for OBJ."
+  (format "User %s" (object-name-string this)))
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-user))
+  "Return a string to use as a speedbar button for OBJECT."
+  (format "%s" (object-name-string this)))
+
+
+;;; Class rudel-document methods
+;;
+
+(defmethod eieio-speedbar-description ((this rudel-document))
+  "Construct a description for from the name of document object THIS."
+  (format "Document %s" (object-name-string this)))
+
+(defmethod eieio-speedbar-object-buttonname ((this rudel-document))
+  "Return a string to use as a speedbar button for OBJECT."
+  (rudel-unique-name this))
+
+;;; Speedbar support mode
+;;
+(defun rudel-speedbar-make-map ()
+  "Make the generic object based speedbar keymap."
+  (speedbar-make-specialized-keymap))
+
+(defvar rudel-speedbar-key-map
+  (rudel-speedbar-make-map)
+  "A Generic object based speedbar display keymap.")
+
+(defvar rudel-speedbar-menu
+  '([ "Compile" rudel-speedbar-compile-line t])
+  "Menu part in easymenu format used in speedbar while browsing objects.")
+
+(defun rudel-speedbar-toplevel-buttons (dir)
+  "Return a list of objects to display in speedbar.
+Argument DIR is the directory from which to derive the list of objects."
+  (when rudel-current-session
+    (with-slots (users documents) rudel-current-session
+      (append users documents))))
+
+(eieio-speedbar-create 'rudel-speedbar-make-map
+		       'rudel-speedbar-key-map
+		       'rudel-speedbar-menu
+		       "Collaboration Session"
+		       'rudel-speedbar-toplevel-buttons)
+
+;;;###autoload
+(defun rudel-speedbar ()
+  "Show connected users and available documents of Rudel session in speedbar."
+  (interactive)
+  (speedbar-frame-mode 1)
+  (speedbar-change-initial-expansion-list "Collaboration Session")
+  (speedbar-get-focus))
+
+;;; Speedbar Project Methods
+;;
+;; (defun rudel-find-nearest-file-line ()
+;;   "Go backwards until we find a file."
+;;   (save-excursion
+;;     (beginning-of-line)
+;;     (looking-at "^\\([0-9]+\\):")
+;;     (let ((depth (string-to-number (match-string 1))))
+;;       (while (not (re-search-forward "[]] [^ ]"
+;; 				     (save-excursion (end-of-line)
+;; 						     (point))
+;; 				     t))
+;; 	(re-search-backward (format "^%d:" (1- depth)))
+;; 	(setq depth (1- depth)))
+;;       (speedbar-line-token))))
+;;
+;; (defmethod eieio-speedbar-derive-line-path ((obj rudel-session) &optional depth)
+;;   "Return the path to OBJ.
+;; Optional DEPTH is the depth we start at."
+;;   "session" ;(file-name-directory (oref obj file))
+;;   )
+;;
+;; (defmethod eieio-speedbar-derive-line-path ((obj rudel-session) &optional depth)
+;;   "Return the path to OBJ.
+;; Optional DEPTH is the depth we start at."
+;;   (let ((proj (rudel-target-parent obj)))
+;;     ;; Check the type of line we are currently on.
+;;     ;; If we are on a child, we need a file name too.
+;;     (save-excursion
+;;       (let ((lt (speedbar-line-token)))
+;; 	(if (or (eieio-object-p lt) (stringp lt))
+;; 	    (eieio-speedbar-derive-line-path proj)
+;; 	  ;; a child element is a token.  Do some work to get a filename too.
+;; 	  (concat (eieio-speedbar-derive-line-path proj)
+;; 		  (rudel-find-nearest-file-line)))))))
+;;
+;; (defmethod eieio-speedbar-description ((obj rudel-session))
+;;   "Provide a speedbar description for OBJ."
+;;   "bla") ;(rudel-description obj))
+;;
+;;
+;; (defmethod eieio-speedbar-object-buttonname ((object rudel-project))
+;;   "Return a string to use as a speedbar button for OBJECT."
+;;   (if (rudel-parent-project object)
+;;       (rudel-name object)
+;;     (concat (rudel-name object) " " (oref object version))))
+;;
+;;
+;; (defmethod eieio-speedbar-object-children ((this rudel-project))
+;;   "Return the list of speedbar display children for THIS."
+;;   (condition-case nil
+;;       (with-slots (subproj targets) this
+;; 	(append subproj targets))
+;;     (error nil)))
+;;
+;;
+;; ;;; Generic file management for TARGETS
+;; ;;
+;; (defun rudel-file-find (text token indent)
+;;   "Find the file TEXT at path TOKEN.
+;; INDENT is the current indentation level."
+;;   (speedbar-find-file-in-frame
+;;    (expand-file-name token (speedbar-line-directory indent)))
+;;   (speedbar-maybee-jump-to-attached-frame))
+;;
+;; (defun rudel-create-tag-buttons (filename indent)
+;;   "Create the tag buttons associated with FILENAME at INDENT."
+;;   (let* ((lst (speedbar-fetch-dynamic-tags filename)))
+;;     ;; if no list, then remove expando button
+;;     (if (not lst)
+;; 	(speedbar-change-expand-button-char ??)
+;;       (speedbar-with-writable
+;; 	;; We must do 1- because indent was already incremented.
+;; 	(speedbar-insert-generic-list (1- indent)
+;; 				      lst
+;; 				      'rudel-tag-expand
+;; 				      'rudel-tag-find)))))
+;;
+;; (defun rudel-tag-expand (text token indent)
+;;   "Expand a tag sublist.  Imenu will return sub-lists of specialized tag types.
+;; Etags does not support this feature.  TEXT will be the button
+;; string.  TOKEN will be the list, and INDENT is the current indentation
+;; level."
+;;   (cond ((string-match "+" text)	;we have to expand this file
+;; 	 (speedbar-change-expand-button-char ?-)
+;; 	 (speedbar-with-writable
+;; 	   (save-excursion
+;; 	     (end-of-line) (forward-char 1)
+;; 	     (speedbar-insert-generic-list indent token
+;; 					   'rudel-tag-expand
+;; 					   'rudel-tag-find))))
+;; 	((string-match "-" text)	;we have to contract this node
+;; 	 (speedbar-change-expand-button-char ?+)
+;; 	 (speedbar-delete-subblock indent))
+;; 	(t (error "Ooops...  not sure what to do")))
+;;   (speedbar-center-buffer-smartly))
+;;
+;; (defun rudel-tag-find (text token indent)
+;;   "For the tag TEXT in a file TOKEN, goto that position.
+;; INDENT is the current indentation level."
+;;   (let ((file (rudel-find-nearest-file-line)))
+;;     (speedbar-find-file-in-frame file)
+;;     (save-excursion (speedbar-stealthy-updates))
+;;     ;; Reset the timer with a new timeout when cliking a file
+;;     ;; in case the user was navigating directories, we can cancel
+;;     ;; that other timer.
+;; ;    (speedbar-set-timer speedbar-update-speed)
+;;     (goto-char token)
+;;     (run-hooks 'speedbar-visiting-tag-hook)
+;;     ;;(recenter)
+;;     (speedbar-maybee-jump-to-attached-frame)
+;;     ))
+
+(provide 'rudel-speedbar)
+
+;;; rudel-speedbar.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-state-machine.el b/emacs.d/lisp/rudel/rudel-state-machine.el
new file mode 100644
index 0000000..d96bcc7
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-state-machine.el
@@ -0,0 +1,331 @@
+;;; rudel-state-machine.el --- A simple state machine for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, FSM
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This is a simple implementation of a finite state machine
+;; (FSM). The is modeled by rudel-state-machine class, objects of
+;; which contain state objects of classes derived from
+;; rudel-state. There are no explicit transition rules, since states
+;; specify their successors.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel-errors)
+(require 'rudel-compat) ;; for pulsing progress reporter
+
+
+;;; Errors related to the state machine
+;;
+
+;; rudel-state-error
+
+(intern "rudel-state-error")
+
+(put 'rudel-state-error 'error-conditions
+     '(error
+       rudel-error rudel-state-error))
+
+(put 'rudel-state-error 'error-message
+     "Invalid state or state transition")
+
+;; rudel-invalid-successor-state
+
+(intern "rudel-invalid-successor-state")
+
+(put 'rudel-invalid-successor-state 'error-conditions
+     '(error
+       rudel-error rudel-state-error rudel-invalid-successor-state))
+
+(put 'rudel-invalid-successor-state 'error-message
+     "Invalid successor state in state transition")
+
+;; rudel-entered-error-state
+
+(intern "rudel-entered-error-state")
+
+(put 'rudel-entered-error-state 'error-conditions
+     '(error
+       rudel-error rudel-state-error rudel-entered-error-state))
+
+(put 'rudel-entered-error-state 'error-message
+     "Transition to error state")
+
+;; rudel-no-start-state
+
+(intern "rudel-no-start-state")
+
+(put 'rudel-no-start-state 'error-conditions
+     '(error
+       rudel-error rudel-state-error rudel-no-start-state))
+
+(put 'rudel-no-start-state 'error-message
+     "No start state specified for state machine")
+
+
+;;; Class rudel-state
+;;
+
+(defclass rudel-state ()
+  ()
+  "A state that can be used in state machines."
+  :abstract t)
+
+(defgeneric rudel-accept ((this rudel-state) &rest arguments)
+  "Executed when the machine receives an event while in state THIS.")
+
+(defgeneric rudel-enter ((this rudel-state) &rest arguments)
+  "Executed when the machine switches to state THIS.")
+
+(defgeneric rudel-leave ((this rudel-state))
+  "Executed when the machine leaves state THIS.")
+
+
+;;; Class rudel-state-machine
+;;
+
+(defclass rudel-state-machine ()
+  ((states :initarg  :states
+	   :type     list ;; alist
+	   :initform nil
+	   :documentation
+	   "A list (NAME . STATE) conses where NAME is a symbol
+and STATE is an object of a class derived from rudel-state.")
+   (state  :initarg  :state
+	   :type     rudel-state-child
+	   :documentation
+	   "The current state of the machine."))
+  "A finite state machine.")
+
+(defmethod initialize-instance :after ((this rudel-state-machine)
+				       &rest slots)
+  "Set current state of THIS to a proper initial value.
+If a start state is specified in the arguments to the
+constructor, that state is used. If there is no such state, the
+list of states is search for a state named start. If that fails
+as well, the first state in the state list is used."
+  (with-slots (states) this
+    ;; Find a suitable start state and switch to it.
+    (let ((start (or (plist-get slots :start)
+		     (car (assoc 'start states))
+		     (when (length states)
+		       (car (nth 0 states))))))
+      (unless start
+	(signal 'rudel-no-start-state nil))
+      ;; Make start state the current state and call send an enter
+      ;; message.
+      (let ((start (cdr (assoc start states))))
+	(oset this :state start)
+	(rudel--switch-to-return-value
+	 this start (rudel-enter start)))))
+  )
+
+(defmethod rudel-find-state ((this rudel-state-machine) name)
+  "Return state object for symbol NAME."
+  (with-slots (states) this
+    (cdr (assoc name states))))
+
+(defmethod rudel-register-state ((this rudel-state-machine) name state)
+  "Register STATE and its NAME with THIS state machine."
+  (object-add-to-list this :states (cons name state) t))
+
+(defmethod rudel-register-states ((this rudel-state-machine) states)
+  "Register STATES with THIS state machine.
+STATES is a list of cons cells whose car is a symbol - the name
+of the state - and whose cdr is a class."
+  (dolist (symbol-and-state states)
+    (destructuring-bind (name . class) symbol-and-state
+      (rudel-register-state
+       this name (make-instance class (symbol-name name)))))
+  )
+
+(defmethod rudel-current-state ((this rudel-state-machine) &optional object)
+  "Return name and, optionally, state object of the current state of THIS.
+If OBJECT is non-nil, (NAME . OBJECT) is returned. Otherwise,
+just NAME."
+  (with-slots (states state) this
+    (let ((state-symbol (car (find state states :key #'cdr :test #'eq))))
+      (if object
+	  (cons state-symbol state)
+	state-symbol)))
+  )
+
+(defmethod rudel-accept ((this rudel-state-machine) &rest arguments)
+  "Process an event described by ARGUMENTS."
+  (with-slots (state) this
+    ;; Let the current state decide which state is next.
+    (let ((next (apply #'rudel-accept state arguments)))
+      (cond
+       ;; If NEXT is nil, a symbol or a state object, we switch states
+       ;; without passing any data.
+       ((or (null next) (symbolp next) (rudel-state-child-p next))
+	(rudel-switch this next))
+
+       ;; If NEXT is a list, it contains the symbol of the successor
+       ;; state and additional data.
+       ((listp next)
+	(apply #'rudel-switch this next))
+
+       ;; Other types cannot be processed.
+       (t
+	(signal 'wrong-type-argument (list (type-of next)))))))
+  )
+
+(defmethod rudel-switch ((this rudel-state-machine) next
+			 &rest arguments)
+  "Leave current state and switch to state NEXT.
+ARGUMENTS are passed to the `rudel-enter' method of the successor
+state."
+  (with-slots (states state) this
+    (cond
+     ;; When NEXT is a state object, use it.
+     ((rudel-state-child-p next))
+
+     ;; When NEXT is nil, stay in the current state.
+     ((null next)
+      (setq next state))
+
+     ;; When NEXT is a symbol (but not nil), look up the corresponding
+     ;; state. Signal an error, if there is none.
+     ((symbolp next)
+      (let ((next-state (assoc next states)))
+	(unless next-state
+	  (signal 'rudel-invalid-successor-state
+		  (list next '<- state)))
+	(setq next (cdr next-state))))
+
+     ;; Other types cannot be processed.
+     (t
+      (signal 'wrong-type-argument (list (type-of next)))))
+
+    ;; Unless the successor state is equal to the current state, leave
+    ;; the current state and switch to the successor.
+    (if (and (eq state next)
+	     (null arguments))
+	;; Return state
+	state
+      ;; Notify (old) current state.
+      (rudel-leave state)
+      ;; Update current state.
+      (setq state next)
+      ;; Notify (new) current state. Using the call's value as next
+      ;; state is a bit dangerous since a long sequence of immediate
+      ;; state switches could exhaust the stack.
+      (rudel--switch-to-return-value
+       this state (apply #'rudel-enter state arguments))))
+  )
+
+(defmethod rudel--switch-to-return-value ((this rudel-state-machine)
+					  state next)
+  "Switch from STATE to the next state indicated by NEXT.
+STATE is the current state.
+NEXT can nil, a list or a `rudel-state' object."
+  (cond
+   ;; Remain in current state.
+   ((null next)
+    state)
+   ;; NEXT contains next state and arguments to pass to it when
+   ;; switching.
+   ((listp next)
+    (apply #'rudel-switch this next))
+   ;; Otherwise NEXT is a `rudel-state' object.
+   (t
+    (rudel-switch this next)))
+  )
+
+(defmethod object-print ((this rudel-state-machine) &rest strings)
+  "Add current state to the string representation of THIS."
+  (if (slot-boundp this 'state)
+      (with-slots (state) this
+	(apply #'call-next-method
+	       this
+	       (format " state: %s"
+		       (object-name-string state))
+	       strings))
+    (call-next-method this " state: #start"))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-state-wait (machine success-states
+			 &optional error-states callback)
+  "Repeatedly call CALLBACK until MACHINE is in a state in SUCCESS-STATES or ERROR-STATES.
+MACHINE should be of type rudel-state-machine-child or at least
+have a method `rudel-get-state'.
+
+SUCCESS-STATES and ERROR-STATES are lists which contain the
+names (as symbols) of success and error states respectively.
+This function does not return when MACHINE enters states not in
+SUCCESS-STATES or ERROR-STATES. As a result, a deadlock can occur
+when MACHINE deadlocks or cycles through states not in either
+list infinitely.
+
+When non-nil, CALLBACK has to be a function that accepts one
+argument of the form (SYMBOL . STATE) where SYMBOL is the name
+symbol of the current state and STATE is the state object."
+  ;; Wait until MACHINE enter a state in SUCCESS-STATES or
+  ;; ERROR-STATES.
+  (let ((result
+	 (catch 'state-wait
+	   (while t
+	     ;; Retrieve current state.
+	     (destructuring-bind (symbol . state)
+		 (rudel-current-state machine t)
+
+	       ;; Check against success and error states.
+	       (when (memq symbol success-states)
+		 (throw 'state-wait (cons 'success (cons symbol state))))
+	       (when (memq symbol error-states)
+		 (throw 'state-wait (cons 'error   (cons symbol state))))
+
+	       ;; Update progress indicator and sleep.
+	       (when callback
+		 (funcall callback (cons symbol state)))
+	       (sleep-for 0.05))))))
+    (when callback
+      (funcall callback t))
+
+    ;; If MACHINE ended up in an error state, signal
+    (unless (eq (car result) 'success)
+      (signal 'rudel-entered-error-state (cdr result)))
+    ;; Return state
+    (cdr result))
+  )
+
+(provide 'rudel-state-machine)
+;;; rudel-state-machine.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-tls.el b/emacs.d/lisp/rudel/rudel-tls.el
new file mode 100644
index 0000000..a770851
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-tls.el
@@ -0,0 +1,201 @@
+;;; rudel-tls.el --- Start TLS protocol.
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, TLS, encryption, starttls, gnutls
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This contains a simple implementation of the so calls Start TLS
+;; protocol, which means enabling TLS encryption for an existing
+;; network connection.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'format-spec)
+
+(require 'rudel)
+(require 'rudel-util)
+
+
+;;; Customization
+;;
+
+(defcustom rudel-tls-client-program
+  "gnutls-cli"
+  "The gnutls client program to use for encrypted connections."
+  :group 'rudel
+  :type  'file)
+
+(defcustom rudel-tls-client-arguments
+  "--starttls --kx ANON_DH --port %p %h"
+  "Arguments passed to the gnutls client program."
+  :group 'rudel
+  :type  'string)
+
+
+;;; TLS functions
+;;
+
+(defun rudel-tls-make-process (&rest args)
+  "Make a network process with keyword arguments ARGS.
+This function works similar to `make-network-process'. Supported
+keyword arguments are :name (ignore), :host, :port, :filter
+and :sentinel. The returned process object is suitable for
+start-TLS. Once the enclosing protocol indicates TLS encryption
+should start, `rudel-tls-start-tls' can be called to enabled TLS
+for the network connection."
+  (let* ((host      (plist-get args :host)) ;; TODO clumsy
+	 (port      (plist-get args :service))
+	 (filter    (plist-get args :filter))
+	 (sentinel  (plist-get args :sentinel))
+	 ;; Compile the command to start the TLS binary.
+	 (arguments (format-spec rudel-tls-client-arguments
+				 (format-spec-make
+				  ?h host
+				  ?p (number-to-string port))))
+	 ;; Start the TLS program.
+	 (process (apply #'start-process
+			 (format "*tls-%s*" host) nil
+			 rudel-tls-client-program
+			 (split-string arguments " "))))
+
+    ;; Store filter function and attach proxy filter to handle TLS
+    ;; handshake.
+    (when filter
+      (rudel-set-process-object process filter :old-filter))
+    (set-process-filter process #'rudel-tls-wait-init)
+
+    ;; Attach sentinel function.
+    (when sentinel
+      (set-process-sentinel process sentinel))
+
+    ;; Mark the process as supporting TLS encryption
+    (rudel-set-process-object process t :supports-tls)
+
+    process)
+  )
+
+(defun rudel-tls-start-tls (process)
+  "Enable TLS encryption for the network connection PROCESS.
+This only works if PROCESS has been created by
+`rudel-tls-make-process'."
+  ;; Save current filter function.
+  (rudel-set-process-object
+   process (process-filter process) :old-filter)
+  ;; Install TLS handshake filter function and signal program to start
+  ;; TLS handshake.
+  (message "tls-start-tls: switching to \"handshake\" filter")
+  (set-process-filter process #'rudel-tls-wait-handshake)
+  (signal-process process 'sigalrm)
+  )
+
+(defun rudel-tls-wait-init (process data)
+  "Is installed as process filter on PROCESS until gnutls is done printing messages."
+  ;; Retrieve complete lines.
+  (let ((buffer (rudel-process-object process :buffer)))
+    (rudel-assemble-line-fragments data buffer)
+    (rudel-set-process-object process buffer :buffer))
+
+  (let ((client-data)
+	(old-filter (rudel-process-object process :old-filter))
+	(client-mode))
+
+    ;; Assemble lines that were not generated by gnutls. It is very
+    ;; brittle to wait for last line of gnutls output like, but it
+    ;; cannot be helped.
+    (rudel-loop-lines data line
+      (if client-mode
+	  (setq client-data (concat client-data line "\n"))
+	(when (string-match-p "- Simple Client Mode.*" line)
+	  (setq client-mode t))))
+
+    ;; When there are any lines not generated by gnutls,
+    ;; initialization is over. Process the data and install the old
+    ;; filter function.
+    (when client-data
+      (funcall old-filter process client-data))
+    (when client-mode
+      (message "tls-wait-init: switching back to old filter")
+      (set-process-filter process old-filter)))
+  )
+
+(defun rudel-tls-wait-handshake (process data)
+  "Is installed as process filter on PROCESS while gnutls is doing the TLS handshake."
+  ;; Retrieve complete lines.
+  (let ((buffer (rudel-process-object process :buffer)))
+    (rudel-assemble-line-fragments data buffer)
+    (rudel-set-process-object process buffer :buffer))
+
+  (let ((client-data)
+	(old-filter  (rudel-process-object process :old-filter))
+	(client-mode))
+
+    ;; Assemble lines that were not generated by gnutls. It is very
+    ;; brittle to wait for last line of gnutls output like, but it
+    ;; cannot be helped.
+    (rudel-loop-lines data line
+      (if client-mode
+	  (setq client-data (concat client-data line "\n"))
+	(when (string-match-p "- Compression.*" line)
+	  (setq client-mode t))))
+
+    ;; When there are any lines not generated by gnutls, handshake is
+    ;; over. Process the data and install `established' filter
+    ;; function.
+    (when client-data
+      (funcall old-filter process client-data))
+    (when client-mode
+      (message "tls-wait-handshake: switching to \"established\" filter")
+      (set-process-filter process #'rudel-tls-established)
+      (rudel-set-process-object process t :encryption)))
+  )
+
+(defun rudel-tls-established (process data)
+  "Is installed as process filter on PROCESS after gnutls has established TLS encryption."
+  ;; Retrieve complete lines.
+  (let ((buffer (rudel-process-object process :buffer)))
+    (rudel-assemble-line-fragments data buffer)
+    (rudel-set-process-object process buffer :buffer))
+
+  (let ((client-data)
+	(old-filter (rudel-process-object process :old-filter)))
+
+    ;; Assemble lines that were not generated by gnutls.
+    (rudel-loop-lines data line
+      (unless (string-match-p "- Peer has closed the GNUTLS connection" line)
+	(setq client-data (concat client-data line "\n"))))
+
+    ;; When there are any lines not generated by gnutls, pass those to
+    ;; the old filter function.
+    (when client-data
+      (funcall old-filter process client-data)))
+  )
+
+(provide 'rudel-tls)
+;;; rudel-tls.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-transport.el b/emacs.d/lisp/rudel/rudel-transport.el
new file mode 100644
index 0000000..8f0b21d
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-transport.el
@@ -0,0 +1,72 @@
+;;; rudel-transport.el --- Rudel transport interface and backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, backend, transport
+;; X-RCS: $Id:$
+;;
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains the interface for Rudel transport backends.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-backend)
+
+
+;;; Class rudel-transport
+;;
+
+(defclass rudel-transport ()
+  ()
+  "Interface for transport objects.")
+
+(defgeneric rudel-transport-send ((this rudel-transport) data)
+  "Send DATA through THIS transport object.")
+
+(defgeneric rudel-transport-set-handler ((this rudel-transport)
+					 handler)
+  "Install HANDLER as dispatcher for messages received by THIS.")
+
+
+;;; Class rudel-transport-backend
+;;
+
+(defclass rudel-transport-backend (rudel-backend)
+  ()
+  "Interface implemented by transport backends."
+  :abstract t)
+
+(defgeneric rudel-make-connection ((this rudel-transport-backend) info)
+  "Create a transport object according to INFO.")
+
+(defgeneric rudel-wait-for-connections ((this rudel-transport-backend)
+					info)
+  "Create a transport object according to INFO.")
+
+(provide 'rudel-transport)
+;;; rudel-transport.el ends here
diff --git a/emacs.d/lisp/rudel/rudel-util.el b/emacs.d/lisp/rudel/rudel-util.el
new file mode 100644
index 0000000..12a967c
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel-util.el
@@ -0,0 +1,261 @@
+;;; rudel-util.el --- Miscellaneous functions for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, miscellaneous, util
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains miscellaneous functions for Rudel.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+
+(require 'rudel-errors)
+
+
+;;; Errors
+;;
+
+;; rudel-dispatch-error
+
+(intern "rudel-dispatch-error")
+
+(put 'rudel-dispatch-error 'error-conditions
+     '(error
+       rudel-error rudel-dispatch-error))
+
+(put 'rudel-dispatch-error 'error-message
+     "Could not dispatch message to handler")
+
+
+;;; Class rudel-hook-object
+;;
+
+(defclass rudel-hook-object ()
+  ()
+  "Mixin for classes that offer one or more hooks for each of
+their objects.
+
+This idiom is usually called something like signal/slot or
+event/subscription, but for Emacs, the notion of hooks seems more
+appropriate."
+  :abstract t)
+
+(defmethod object-add-hook ((this rudel-hook-object)
+			    hook function &optional append)
+  "Add FUNCTION to HOOK for THIS.
+If APPEND is non-nil FUNCTION becomes the last element in the
+list of hooks."
+  (let ((value (slot-value this hook)))
+    (unless (member function value)
+      (set-slot-value this hook
+		      (if append (append value (list function))
+			(cons function value)))))
+  )
+
+(defmethod object-remove-hook ((this rudel-hook-object)
+			       hook function)
+  "Remove FUNCTION from HOOK for THIS."
+  (set-slot-value this hook
+		  (remove function (slot-value this hook))))
+
+(defmethod object-run-hook-with-args ((this rudel-hook-object)
+				      hook &rest arguments)
+  "Run HOOK of THIS with arguments ARGUMENTS."
+  (let ((hook (slot-value this hook)))
+    (apply #'run-hook-with-args 'hook this arguments)))
+
+
+;;; Class rudel-socket-owner
+;;
+
+(defclass rudel-socket-owner ()
+  ((socket :initarg :socket
+	   :type    process
+	   :documentation
+	   "The process object representing the socket through
+which the communication happens."))
+  "Class rudel-socket-owner ")
+
+(defmethod initialize-instance :after ((this rudel-socket-owner)
+				       &rest slots)
+  "Attach THIS to as process object of our socket."
+  ;; Attach to our socket.
+  (with-slots (socket) this
+    (rudel-set-process-object socket this))
+  )
+
+(defmethod rudel-disconnect ((this rudel-socket-owner))
+  "Disconnect the network connection owned by THIS."
+  (with-slots (socket) this
+    (delete-process socket)))
+
+(defmethod rudel-state-change ((this rudel-socket-owner) state message)
+  "Called when the state of THIS changes to STATE.
+MESSAGE is the message emitted when the state transition
+occurred."
+  (with-slots (socket) this
+    (case state
+      ;; Nothing to do here.
+      (run
+       nil)
+
+      ;; Dispatch events which indicate the termination of the
+      ;; connection to `rudel-close'.
+      ((closed failed exit)
+       (rudel-close this))))
+  )
+
+(defmethod rudel-close ((this rudel-socket-owner))
+  "Called when the connection associated to THIS is closed.")
+
+
+;;; Networking helper functions and macros
+;;
+
+(defun rudel-process-object (process &optional key)
+  "Return the object attached to PROCESS using identifier KEY."
+  (unless key
+    (setq key :object))
+  (get (intern (process-name process)) key))
+
+(defun rudel-set-process-object (process object &optional key)
+  "Set object attached to PROCESS using identifier KEY to OBJECT."
+  (unless key
+    (setq key :object))
+  (put (intern (process-name process)) key object))
+
+(defun rudel-filter-dispatch (process data)
+  "Call `rudel-receive' method of object attached to PROCESS with DATA."
+  (let ((object (rudel-process-object process)))
+    (rudel-receive object data)))
+
+(defun rudel-sentinel-dispatch (process message)
+  "Call `rudel-state-change' method of the object attached to PROCESS with state and MESSAGE."
+  (let ((object (rudel-process-object process))
+	(state  (process-status process)))
+    (rudel-state-change object state message)))
+
+
+;;; Fragmentation and assembling functions.
+;;
+
+(defmacro rudel-assemble-line-fragments (data storage)
+  "Find an return complete lines in DATA, store excess data in STORAGE.
+If STORAGE is non-nil when calling, consider content as leftover
+data from last and concatenate with DATA before processing."
+  (declare (debug (form form)))
+  (let ((index (make-symbol "index")))
+    `(progn
+       ;; If there are stored fragments, append them to the new data.
+       (when ,storage
+	 (setq ,data    (concat ,storage ,data))
+	 (setq ,storage nil))
+       ;; Try to find a line break in the augmented data.
+       (let ((,index (position ?\n ,data :from-end t)))
+	 (unless (and ,index (eq ,index (- (length ,data) 1)))
+	   (setq ,storage (if ,index
+			      (substring ,data (+ ,index 1))
+			    ,data))
+	   (setq ,data    (when ,index
+			    (substring ,data 0 (+ ,index 1))))))
+       ,data))
+  )
+
+(defmacro rudel-loop-lines (data var &rest forms)
+  "Execute FROMS with VAR subsequently bound to all lines in DATA."
+  (declare (indent 2)
+	   (debug (form symbolp &rest form)))
+  (let ((lines (make-symbol "lines")))
+    `(when ,data
+       (let ((,lines (split-string ,data "\n" t)))
+	 (dolist (,var ,lines)
+	   (progn ,@forms)))))
+  )
+
+(defmacro rudel-loop-chunks (data var size &rest forms)
+  "Execute FROMS in a loop with VAR bound to chunks of DATA of SIZE.
+Unless (zerop (mod (length data) size) 0) the final chunk is
+truncated. The expression SIZE is evaluated in each loop unless
+it is a number."
+  (declare (indent 3)
+	   (debug (form symbolp numberp &rest form)))
+  ;; If we got a constant number as SIZE, we can check right away.
+  (when (and (numberp size) (<= size 0))
+    (error "Size should be positive"))
+
+  (let ((rest   (make-symbol "rest"))
+	(amount (make-symbol "amount"))
+	;; If SIZE has to be evaluated, we have to check at runtime.
+	(check  (unless (numberp size)
+		  `((when (<= ,size 0)
+		      (error "Size should be positive"))))))
+    `(progn
+       ,@check
+       (let ((,rest ,data)
+	     (,var)
+	     (,amount))
+	 (while (not (string= ,rest ""))
+	   (setq ,amount (min (length ,rest) ,size)
+		 ,var    (substring ,rest 0 ,amount)
+		 ,rest   (substring ,rest ,amount))
+	   (progn ,@forms)))))
+  )
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-dispatch (object prefix name arguments)
+  "Call method (concat PREFIX NAME) of OBJECT with ARGUMENTS.
+If no such method can be found, the condition
+rudel-dispatch-error is signalled."
+  ;; Construct a matching symbol.
+  (let* ((method (intern-soft (concat prefix name))))
+    ;; If we found a suitable method, run it; Otherwise signal.
+    (unless method
+      (signal 'rudel-dispatch-error 'method-symbol-unbound))
+    (condition-case error
+	;; Try to call METHOD. This can still fail when METHOD is not
+	;; defined for the class of OBJECT.
+	(apply method object arguments)
+      ;; Only handle a condition 'no-method-definition' that refers to
+      ;; METHOD, otherwise continue unwinding.
+      (no-method-definition
+       (if (eq method (cadr error))
+	   (signal 'rudel-dispatch-error 'no-method-for-object)
+	 (signal (car error) (cdr error))))))
+  )
+
+(provide 'rudel-util)
+;;; rudel-util.el ends here
diff --git a/emacs.d/lisp/rudel/rudel.el b/emacs.d/lisp/rudel/rudel.el
new file mode 100644
index 0000000..88603fa
--- /dev/null
+++ b/emacs.d/lisp/rudel/rudel.el
@@ -0,0 +1,1012 @@
+;;; rudel.el --- A collaborative editing framework for Emacs
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: rudel, collaboration
+;; URL: http://rudel.sourceforge.net/
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Rudel is a framework for collaborative editing in Emacs.  Its
+;; architecture allows communication with arbitrary collaborative
+;; editors.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'eieio)
+(require 'eieio-base)
+
+(require 'eieio-speedbar) ;; TODO required for now
+
+(require 'rudel-util)
+(require 'rudel-backend)
+(require 'rudel-session-initiation)
+(require 'rudel-operations)
+(require 'rudel-operators)
+(require 'rudel-overlay)
+(require 'rudel-hooks)
+(require 'rudel-interactive) ;; for `rudel-read-backend',
+			     ;; `rudel-read-document',
+			     ;; `rudel-read-session'
+(require 'rudel-icons)
+(require 'rudel-compat) ;; for `read-color' replacement
+
+
+;;; Global variables
+;;
+
+(defconst rudel-version '(0 3)
+  "Version of the Rudel framework.")
+
+(defvar rudel-current-session nil
+  "Global object representing the current Rudel session.
+nil if there is no active session.")
+
+(defvar rudel-buffer-document nil
+  "Buffer-local variable which holds the Rudel document associated with the buffer.")
+(make-variable-buffer-local 'rudel-buffer-document)
+(put 'rudel-buffer-document 'permanent-local t)
+
+(defvar rudel-buffer-change-workaround-data nil
+  "Buffer-local variable which holds change data that could not be accessed otherwise.
+It would be nice to find another way to do this.")
+(make-variable-buffer-local 'rudel-buffer-change-workaround-data)
+(put 'rudel-buffer-change-workaround-data 'permanent-local t)
+
+
+;;; Customization
+;;
+
+(defgroup rudel nil
+  "Rudel collaborative editing framework."
+  :group 'applications)
+
+(defcustom rudel-allocate-buffer-function
+  'rudel-allocate-buffer-clear-existing
+  "A function used to find or create buffers to associate to documents.
+The function is called with the document name as the sole
+argument and has to return a buffer object which will be attached
+to the document in question."
+  :group   'rudel
+  :type    '(choice (const :tag "Clear content of existing buffer"
+			   rudel-allocate-buffer-clear-existing )
+		    (const :tag "Create a new uniquely named buffer"
+			   rudel-allocate-buffer-make-unique )
+		    (function :tag "Other function"))
+  :require 'rudel-interactive)
+
+(defcustom rudel-default-username (user-login-name)
+  "*"
+  :group 'rudel
+  :type  '(string))
+
+
+;;; Class rudel-session
+;;
+
+(defclass rudel-session (rudel-hook-object)
+  ((backend              :initarg  :backend
+			 :type     rudel-backend-child
+			 :documentation
+			 "The backend used by this session.")
+   (users                :initarg  :users
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "The list of users participating in this
+session.")
+   (documents            :initarg  :documents
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This list of documents available in
+this session.")
+   ;; Hooks
+   (end-hook             :initarg  :end-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "")
+   (add-user-hook        :initarg  :add-user-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a user gets added
+to the session.
+The arguments are the session and the user object.")
+   (remove-user-hook     :initarg  :remove-user-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a user gets
+removed from the session.
+The arguments are the session and the user object.")
+   (add-document-hook    :initarg  :add-document-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a document gets
+added to the session.
+The arguments are the session and the document object.")
+   (remove-document-hook :initarg  :remove-document-hook
+			 :type     list
+			 :initform nil
+			 :documentation
+			 "This hook is run when a document gets
+removed from the session.
+The arguments are the session and the document object."))
+  "This class serves as a base class for rudel-client-session and
+rudel-server-session. Consequently, it consists of slots common
+to client and server sessions."
+  :abstract t)
+
+(defmethod rudel-end ((this rudel-session))
+  "Terminate THIS session performing all necessary cleanup."
+  ;; Run the hook.
+  (object-run-hook-with-args this 'end-hook))
+
+(defmethod rudel-add-user ((this rudel-session) user)
+  "Add USER to the user list of THIS session.
+
+Runs object hook (see `rudel-hook-object') `add-user-hook' with
+arguments THIS and USER."
+  ;; Add USER to list.
+  (object-add-to-list this :users user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'add-user-hook user))
+
+(defmethod rudel-remove-user ((this rudel-session) user)
+  "Remove USER from the user list of THIS session.
+
+Runs object hook (see `rudel-hook-object') `remove-user-hook'
+with arguments THIS and USER."
+  ;; Remove USER from list.
+  (object-remove-from-list this :users user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'remove-user-hook user))
+
+(defmethod rudel-find-user ((this rudel-session)
+			    which &optional test key)
+  "Find user WHICH in the user list.
+WHICH is compared to the result of KEY using TEST."
+  (unless test
+    (setq test #'string=))
+  (unless key
+    (setq key #'object-name-string))
+  (with-slots (users) this
+    (find which users :key key :test test))
+  )
+
+(defmethod rudel-add-document ((this rudel-session) document)
+  ""
+  (unless (slot-boundp document :session)
+    (oset document :session this))
+
+  ;; Add DOCUMENT to the list of documents in THIS session.
+  (object-add-to-list this :documents document)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'add-document-hook document))
+
+(defmethod rudel-remove-document ((this rudel-session) document)
+  "Remove DOCUMENT from THIS session, detaching it if necessary."
+  ;; Detach document from its buffer when necessary.
+  (when (rudel-attached-p document)
+    (rudel-detach-from-buffer document))
+
+  ;; Remove DOCUMENT from the list of documents in THIS session.
+  (object-remove-from-list this :documents document)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'remove-document-hook document))
+
+(defmethod rudel-find-document ((this rudel-session)
+				which &optional test key)
+  "Find document WHICH in the document list.
+WHICH is compared to the result of KEY using TEST."
+  (unless test
+    (setq test #'string=))
+  (unless key
+    (setq key #'object-name-string))
+  (with-slots (documents) this
+    (find which documents :key key :test test))
+  )
+
+(defmethod rudel-unsubscribed-documents ((this rudel-session))
+  ""
+  (unless (slot-boundp this :self)
+    (error "Cannot find unsubscribed documents unless slot self is bound"))
+  (with-slots (documents self) this
+    (remove-if
+     (lambda (document)
+       (with-slots (subscribed) document
+	 (memq self subscribed)))
+       documents))
+  )
+
+
+;;; Class rudel-client-session
+;;
+(defclass rudel-client-session (rudel-session)
+  ((connection :initarg  :connection
+	       :type     (or null rudel-connection-child)
+	       :initform nil
+	       :documentation
+	       "The connection used for communication by this
+session.")
+   (self       :initarg  :self
+	       :type     rudel-user-child
+	       :documentation
+	       "Points into USERS to the user object representing
+the local user"))
+  "Objects represent a collaborative editing session from a
+client perspective.")
+
+(defmethod rudel-end ((this rudel-client-session))
+  ;; Clean everything up
+  (with-slots (connection users documents) this
+    ;; Detach all documents from their buffers
+    (mapc #'rudel-detach-from-buffer documents)
+
+    ;; Terminate the connection
+    (when connection
+      (condition-case nil
+	  (rudel-disconnect connection)
+	(error nil))))
+
+  ;;
+  (when (next-method-p)
+    (call-next-method))
+  )
+
+
+;;; Class rudel-server-session
+;;
+
+(defclass rudel-server-session (rudel-session)
+  ()
+  "Class rudel-server-session "
+  :abstract t)
+
+
+;;; Class rudel-connection
+;;
+
+(defclass rudel-connection ()
+  ((session :initarg :session
+	    :type    rudel-session-child
+	    :documentation
+	    ""))
+  "This abstract class defines the interface implementations of
+client protocols have to obey."
+  :abstract t)
+
+(defgeneric rudel-disconnect ((this rudel-connection))
+  "Close the connection.")
+
+(defgeneric rudel-change-color- ((this rudel-connection) color) ;; TODO name
+  "")
+
+(defgeneric rudel-publish ((this rudel-connection) document)
+  "")
+
+(defgeneric rudel-subscribe-to ((this rudel-connection) document)
+  "")
+
+(defgeneric rudel-unsubscribe-from ((this rudel-connection) document) ; TODO name should be rudel-unsubscribe
+  "")
+
+(defgeneric rudel-local-insert ((this rudel-connection))
+  "")
+
+(defgeneric rudel-local-delete ((this rudel-connection))
+  "")
+
+(defgeneric rudel-remote-insert ((this rudel-connection))
+  "")
+
+(defgeneric rudel-remote-delete ((this rudel-connection))
+  "")
+
+
+;;; Class rudel-user
+;;
+
+(defclass rudel-user (eieio-named
+		      eieio-speedbar-file-button
+		      rudel-hook-object)
+  ((color       :initarg  :color
+		:accessor rudel-color
+		:documentation
+		"Color used to indicate ownership or authorship
+by the user. Examples includes text written by the user or the
+user name itself.")
+   (change-hook :initarg  :change-hook
+		:type     list
+		:initform nil
+		:documentation
+		"This hook is run when this user object
+changes."))
+  "Objects of this class represent users participating in
+collaborative editing session. Note that a participating user
+does not have to be connected to the session at any given time."
+  :abstract t)
+
+(defmethod rudel-display-string ((this rudel-user)
+				 &optional use-images align)
+  "Return a textual representation of THIS for user interface stuff."
+  (with-slots ((name :object-name) color) this
+    (propertize
+     (concat
+      (when use-images
+	(propertize "*" 'display rudel-icon-person))
+      name)
+     'face (list :background color)))
+  )
+
+
+;;; Class rudel-document
+;;
+
+(defclass rudel-document (eieio-named
+			  eieio-speedbar-file-button
+			  rudel-hook-object)
+  ((session          :initarg  :session
+		     :type     rudel-session
+		     :documentation
+		     "")
+   (buffer           :initarg  :buffer
+		     :type     (or null buffer)
+		     :initform nil
+		     :documentation
+		     "")
+   (subscribed       :initarg  :subscribed
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "")
+   ;; Hooks
+   (subscribe-hook   :initarg  :subscribe-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when a user subscribes to
+this document object.")
+   (unsubscribe-hook :initarg  :unsubscribe-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when a user unsubscribes
+from this document object.")
+   (attach-hook      :initarg  :attach-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when a buffer is attached
+to this document object.")
+   (detach-hook      :initarg  :detach-hook
+		     :type     list
+		     :initform nil
+		     :documentation
+		     "This hook is run when the attached buffer
+is detached from this document object."))
+  "This class represents a document, which participants of a
+collaborative editing session can subscribe to."
+  :abstract t)
+
+(defmethod rudel-unique-name ((this rudel-document))
+  "Returns a suggested name for the buffer attached to THIS document."
+  (object-name-string this))
+
+(defmethod rudel-suggested-buffer-name ((this rudel-document))
+  "Returns a suggested name for the buffer attached to THIS document."
+  (rudel-unique-name this))
+
+(defmethod rudel-attached-p ((this rudel-document))
+  (with-slots (buffer) this
+    buffer))
+
+(defmethod rudel-attach-to-buffer ((this rudel-document) buffer)
+  "Attach THIS document to BUFFER"
+  (with-slots ((doc-buffer :buffer)) this
+    ;; Set buffer slot of THIS to BUFFER and associated THIS with
+    ;; BUFFER.
+    (setq doc-buffer buffer)
+    (rudel-set-buffer-document this buffer)
+
+    (with-current-buffer doc-buffer
+      ;; Add the handler function for buffer changes to the buffer's
+      ;; change hook.
+      (add-hook 'after-change-functions
+		#'rudel-handle-buffer-change
+		nil t)
+
+      ;; Store change data before the change a done. This is necessary
+      ;; because the number of bytes (not characters) cannot otherwise
+      ;; be recovered after a deletion.
+      (add-hook 'before-change-functions
+		#'rudel-buffer-change-workaround
+		nil t)
+
+      ;; Add a handler to the kill-buffer hook to unsubscribe from the
+      ;; document when the buffer gets killed.
+      (add-hook 'kill-buffer-hook
+		#'rudel-unpublish-buffer
+		nil t)
+
+      ;;
+      (add-hook 'change-major-mode-hook
+		#'rudel-handle-major-mode-change
+		nil t))
+
+    ;; Run the hook.
+    (object-run-hook-with-args this 'attach-hook doc-buffer))
+  )
+
+(defmethod rudel-detach-from-buffer ((this rudel-document))
+  "Detach document THIS from its buffer.
+Do nothing, if THIS is not attached to any buffer."
+  (with-slots (buffer) this
+    (let ((buffer-save buffer))
+
+      ;; Only try to detach from BUFFER, if it is non-nil. BUFFER can
+      ;; be nil, if the user did not subscribe to the document, or
+      ;; unsubscribed after subscribing.
+      (when buffer
+
+	(with-current-buffer buffer
+	  ;; Remove our handler function from the kill-buffer hook.
+	  (remove-hook 'kill-buffer-hook
+		       #'rudel-unpublish-buffer
+		       t)
+
+	  ;; Remove our handler function from the after-change hook.
+	  (remove-hook 'after-change-functions
+		       #'rudel-handle-buffer-change
+		       t)
+
+	  ;; Remove our handler function from the before-change hook.
+	  (remove-hook 'before-change-functions
+		       #'rudel-buffer-change-workaround
+		       t)
+
+	  ;; Remove all overlays.
+	  (rudel-overlays-remove-all)
+
+	  ;; Remove the major mode change handler.
+	  (remove-hook 'change-major-mode-hook
+		       #'rudel-handle-major-mode-change
+		       t))
+
+	;; Unset buffer slot of THIS and delete association of THIS with
+	;; BUFFER.
+	(rudel-set-buffer-document nil buffer)
+	(setq buffer nil))
+
+      ;; Run the hook.
+      (object-run-hook-with-args this 'detach-hook buffer-save)))
+  )
+
+(defmethod rudel-add-user ((this rudel-document) user)
+  "Add USER to the list of subscribed users of THIS.
+
+Runs object hook (see `rudel-hook-object') `subscribe-hook' with
+arguments THIS and USER."
+  ;; Add USER to list.
+  (object-add-to-list this :subscribed user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'subscribe-hook user))
+
+(defmethod rudel-remove-user ((this rudel-document) user)
+  "Remove USER from the list of subscribed users of THIS.
+
+Runs object hook (see `rudel-hook-object') `unsubscribe-hook'
+with arguments THIS and USER."
+  ;; Remove USER from list.
+  (object-remove-from-list document :subscribed user)
+
+  ;; Run the hook.
+  (object-run-hook-with-args this 'unsubscribe-hook user))
+
+(defmethod rudel-insert ((this rudel-document) position data)
+  "Insert DATA at POSITION into the buffer attached to THIS.
+When POSITION is nil `point-max' is used to determine the
+insertion position.
+Modification hooks are disabled during the insertion."
+  (with-slots (buffer) this
+    (save-excursion
+      (set-buffer buffer)
+
+      (unless position
+	(setq position (- (point-max) 1)))
+
+      (let ((inhibit-modification-hooks t))
+	(goto-char (+ position 1))
+	(insert data))))
+  )
+
+(defmethod rudel-delete ((this rudel-document) position length)
+  "Delete a region of LENGTH character at POSITION from the buffer attached to THIS.
+Modification hooks are disabled during the insertion."
+  (with-slots (buffer) this
+    (save-excursion
+      (set-buffer buffer)
+
+      (let ((inhibit-modification-hooks t))
+	(delete-region (+ position 1) (+ position length 1)))))
+  )
+
+(defmethod rudel-local-operation ((this rudel-document) operation)
+  "Apply the local operation OPERATION to THIS."
+  (with-slots (session buffer) this
+    (with-slots (connection (user :self)) session
+      (dolist (operators (list
+
+			   ;; Update overlays
+			   (rudel-overlay-operators
+			    "overlay-operators"
+			    :document this
+			    :user     user)
+
+			   ;; Notify connection
+			   (rudel-connection-operators
+			    "connection-operators"
+			    :connection connection
+			    :document   this)))
+
+	;; Apply the operation using each set of operators
+	(rudel-apply operation operators))))
+  )
+
+(defmethod rudel-remote-operation ((this rudel-document) user operation)
+  "Apply the remote operation OPERATION performed by USER to THIS."
+  (dolist (operators (append
+
+		       ;; Update buffer contents
+		       (list (rudel-document-operators
+			      "document-operators"
+			      :document this))
+
+		       ;; Update overlays
+		       (when user
+			 (list (rudel-overlay-operators
+				"overlay-operators"
+				:document this
+				:user     user)))))
+
+    ;; Apply the operation using each set of operators
+    (rudel-apply operation operators))
+  )
+
+(defmethod rudel-chunks ((this rudel-document))
+  "Return a list of text chunks of the associated buffer.
+Each element in the chunk is a list structured like this (START
+END AUTHOR). START and END are numbers, AUTHOR is of type (or
+null rudel-user-child)."
+  (with-slots (buffer) this
+    ;; Extract buffer string and a list of chunks partitioning the
+    ;; string according to the respective author (or nil).
+    (with-current-buffer buffer
+      (let ((string         (buffer-string)) ;; TODO no-properties?
+	    (overlay-chunks (mapcar
+			     (lambda (overlay)
+			       (list (- (overlay-start overlay) 1)
+				     (- (overlay-end   overlay) 1)
+				     (rudel-overlay-user overlay)))
+			     (sort* (rudel-author-overlays)
+				    '< :key 'overlay-start)))
+	    (last)
+	    (augmented-chunks))
+
+	;; Iterate through the list of chunks to find gaps between
+	;; chunks (also before the first) and insert entries with
+	;; author nil accordingly.
+	(dolist (chunk overlay-chunks)
+	  (when (or (and (not last)
+			 (> (nth 0 chunk) 0))
+		    (and last
+			 (/= (nth 1 last)
+			     (nth 0 chunk))))
+	    (push (list (if last (nth 1 last) 0)
+			(nth 0 chunk)
+			nil)
+		  augmented-chunks))
+	  (push chunk augmented-chunks)
+	  (setq last chunk))
+
+	;; If there is text after the last chunk, create another one
+	;; with author nil. If there were no chunks at all, this chunk
+	;; can also cover the whole buffer string.
+	(when (or (and (not last)
+		       (/= (length string) 0))
+		  (and last
+		       (/= (nth 1 last) (length string))))
+	  (push (list (if last (nth 1 last) 0)
+		      (length string)
+		      nil)
+		augmented-chunks))
+
+	;; Sort chunks according to the start position.
+	(sort* augmented-chunks '< :key 'car))))
+  )
+
+
+;;; Buffer-related functions
+;;
+
+(defun rudel-buffer-has-document-p (&optional buffer)
+  "Return non-nil if a document object is attached to BUFFER.
+If BUFFER is nil, use the current buffer."
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (buffer-local-value 'rudel-buffer-document buffer))
+
+(defun rudel-buffer-document (&optional buffer)
+  "Return the document object attached to BUFFER.
+If BUFFER is nil, use the current buffer."
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (buffer-local-value 'rudel-buffer-document buffer))
+
+(defun rudel-set-buffer-document (document &optional buffer)
+  "Associate BUFFER to DOCUMENT.
+If DOCUMENT is nil, make it not associated to any buffer.
+If BUFFER is nil, use the current buffer."
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (with-current-buffer buffer
+    (setq rudel-buffer-document document)))
+
+(defun rudel-handle-buffer-change (from to length)
+  "Handle buffer change at range FROM to TO with length LENGTH by relaying them to the document object of the buffer.
+See after-change-functions for more information."
+  (when (rudel-buffer-has-document-p)
+    (let ((document (rudel-buffer-document))
+	  (text)) ; TODO with-rudel-buffer-document?
+      (cond
+       ;; The change was an insert
+       ((and (/= from to)
+	     (zerop length))
+	(with-slots (buffer) document
+	  (with-current-buffer buffer
+	    (setq text (buffer-substring-no-properties from to)))
+	  (rudel-local-operation document
+				 (rudel-insert-op
+				  "insert"
+				  :from (- from 1)
+				  :data text))))
+
+       ;; The change was a delete
+       ((and (= from to)
+	     (not (zerop length)))
+	(rudel-local-operation document
+			       (rudel-delete-op
+				"delete"
+				:from   (- from 1)
+				:length length)))
+
+       ;; The operation was neither an insert nor a delete. This seems
+       ;; to mean that the region has changed arbitrarily. The only
+       ;; option we have is sending a delete and corresponding insert
+       ;; message that emulate the change.
+       (t
+	(with-slots (buffer) document
+	  (with-current-buffer buffer
+	    (setq text (buffer-substring-no-properties from to)))
+	  (rudel-local-operation document
+				 (rudel-delete-op
+				  "delete"
+				  :from   (- from 1)
+				  :length length))
+	  (rudel-local-operation document
+				 (rudel-insert-op
+				  "insert"
+				  :from (- from 1)
+				  :data text)))))))
+  )
+
+(defun rudel-buffer-change-workaround (from to)
+  (when (/= from to)
+    (setq rudel-buffer-change-workaround-data
+	  (list from to
+		(buffer-substring-no-properties from to)))))
+
+
+;;; Protection against major mode changes
+;;
+
+(defvar rudel-mode-changed-buffers nil
+  "List of buffers that may need to be repaired after a major
+  mode change.")
+
+(defun rudel-handle-major-mode-change ()
+  "Store the current buffer to repair damage done by major mode change.
+
+Note: The way this works is inspired by mode-local.el by David
+Ponce and Eric M. Ludlam."
+  ;; Store the buffer for later repair.
+  (add-to-list 'rudel-mode-changed-buffers (current-buffer))
+
+  ;; Schedule `rudel-after-major-mode-change' to run after the
+  ;; command, that caused the major mode change.
+  (add-hook 'post-command-hook
+	    #'rudel-after-major-mode-change)
+  )
+
+(defun rudel-after-major-mode-change ()
+  "Repair damage done by major mode changes.
+As a function in `post-command-hook', this is run after there was
+a `major-mode' change.
+
+Note: The way this works is inspired by mode-local.el by David
+Ponce and Eric M. Ludlam."
+  ;; Remove this function from `post-command-hook'.
+  (remove-hook 'post-command-hook
+	       #'rudel-after-major-mode-change)
+
+  ;; Repair all buffers affected by the major mode change.
+  (dolist (buffer rudel-mode-changed-buffers)
+    (let ((document (buffer-local-value 'rudel-buffer-document
+					buffer)))
+      (rudel-attach-to-buffer document buffer)))
+  )
+
+
+;;; Interactive functions
+;;
+
+;;;###autoload
+(defun rudel-join-session (info)
+  "Join the collaborative editing session described by INFO.
+INFO is a property list that describes the collaborative editing
+session in terms of properties like :host, :port
+and :encryption. The particular properties and their respective
+meanings depend on the used backend.
+
+When called interactively, all data required to join a session
+will be prompted for."
+  (interactive
+   ;; Try the discover method of session initiation backends to find
+   ;; available sessions.
+   (list
+    (let ((info)
+	  (session-initiation-backend))
+      (while (not info)
+	(message "Discovering Sessions ...")
+	(let* ((sessions   (rudel-session-initiation-discover
+			    session-initiation-backend))
+	       (maybe-info (if (= (length sessions) 1)
+				 (car sessions)
+			       (rudel-read-session
+				sessions "Choose Session: " 'object))))
+	  (if (rudel-backend-cons-p maybe-info)
+	      (setq session-initiation-backend (car maybe-info))
+	    (setq info maybe-info))))
+    info)))
+
+  ;; First, create the session object.
+  (let* ((backend    (cdr (plist-get info :backend)))
+	 (session    (rudel-client-session
+		      (plist-get info :name)
+		      :backend backend))
+	 (connection))
+    ;; Give the backend a chance to collect remaining connect
+    ;; info. For session initiation methods like Zeroconf, we have the
+    ;; _connection_ info, but are still missing the username and
+    ;; stuff.
+    (setq info (rudel-ask-connect-info backend info))
+
+    ;; Add the session object to the connect information.
+    (plist-put info :session session)
+
+    ;; Ask BACKEND to connect using INFO. Do not catch errors since
+    ;; the error messages are probably the best feedback we can give.
+    (setq connection (rudel-connect backend info))
+
+    ;; Set the connection slot of the session object and store it
+    ;; globally.
+    (oset session :connection connection)
+    (setq rudel-current-session session)
+
+    ;; Reset the global session variable when the session ends.
+    (object-add-hook session 'end-hook
+		     (lambda (session)
+		       (setq rudel-current-session nil)))
+
+    ;; Run the hook.
+    (run-hook-with-args 'rudel-session-start-hook session))
+  )
+
+;;;###autoload
+(defun rudel-host-session ()
+  "Host a collaborative editing session.
+All data required to host a session will be prompted for
+interactively."
+  (interactive)
+  ;; If necessary, ask the user for the backend we should use.
+  (let* ((backend (cdr (rudel-backend-choose
+			'protocol
+			(lambda (backend)
+			  (rudel-capable-of-p backend 'host)))))
+	 (info    (rudel-ask-host-info backend))
+	 (server))
+
+    ;; Try to create the server
+    (condition-case error-data
+	(setq server (rudel-host backend info))
+      ('error
+       (error "Could not host session using backend `%s' with %s: %s"
+	      (object-name-string backend)
+	      info
+	      (car error-data))))
+    server))
+
+;;;###autoload
+(defun rudel-end-session ()
+  "End the current collaborative editing session."
+  (interactive)
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  ;; Actually end the session.
+  (rudel-end rudel-current-session)
+  )
+
+;;;###autoload
+(defun rudel-change-color ()
+  "Change the color associated with the local user.
+Not all backends support this operation."
+  (interactive)
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (with-slots (backend connection self) rudel-current-session
+    ;; Make sure the backend can change colors.
+    (unless (rudel-capable-of-p backend 'change-color)
+      (error "Backend `%s' cannot change colors"
+	     (object-name-string backend)))
+
+    (with-slots ((name :object-name) color) self
+      ;; Ask the user for a new color.
+      (setq color (read-color "New Color: " t))
+
+      ;; Tell the connection to announce the change and change it in
+      ;; our user object.
+      (rudel-change-color- connection color)
+
+      ;; Run the change hook.
+      (object-run-hook-with-args self 'change-hook)
+
+      ;; Update overlay color.
+      (rudel-overlay-set-face-attributes
+       (rudel-overlay-make-face-symbol 'author name)
+       color)))
+  )
+
+;;;###autoload
+(defun rudel-subscribe (document)
+  "Subscribe to DOCUMENT offered by a peer in a collaborative editing session.
+When called interactively, DOCUMENT is prompted for interactively."
+  (interactive
+   (list (progn
+	   ;; We have to retrieve the document list from an active
+	   ;; session.
+	   (unless rudel-current-session
+	     (error "No active Rudel session"))
+	   ;; Select unsubscribed documents.
+	   (let ((documents (rudel-unsubscribed-documents
+			     rudel-current-session)))
+	     ;; Already subscribed to all documents. This is an error.
+	     (when (null documents)
+	       (error "No unsubscribed documents"))
+	     ;; Read an unsubscribed document.
+	     (rudel-read-document documents nil 'object)))))
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  ;; Create a new buffer and attach the document to it.
+  (let* ((name   (rudel-suggested-buffer-name document))
+	 (buffer (funcall rudel-allocate-buffer-function name)))
+    (rudel-attach-to-buffer document buffer)
+
+    (let ((connection (oref (oref document :session) :connection)))
+      (rudel-subscribe-to connection document))
+
+    ;; Show the new buffer.
+    (set-window-buffer nil buffer))
+  )
+
+;;;###autoload
+(defun rudel-publish-buffer (&optional buffer)
+  "Make the BUFFER available for subscription to peers in a collaborative editing session.
+If BUFFER is nil, the current buffer is used."
+  (interactive (list nil))
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (with-current-buffer buffer
+    (when (rudel-buffer-has-document-p)
+      (error "Buffer already published or subscribed"))) ; TODO keep this?
+
+  ;;
+  (with-slots (backend connection self) rudel-current-session
+    (let ((document (rudel-make-document backend
+					 (buffer-name buffer)
+					 rudel-current-session)))
+      (rudel-add-document rudel-current-session document)
+
+      (rudel-attach-to-buffer document buffer)
+      (object-add-to-list document :subscribed self)
+
+      (rudel-publish connection document)))
+  )
+
+;;;###autoload
+(defun rudel-unpublish-buffer (&optional buffer)
+  "Deny peers access to BUFFER in a collaborative editing session.
+If BUFFER is nil, the current is used."
+  (interactive)
+
+  ;; Make sure we have a session.
+  (unless rudel-current-session
+    (error "No active Rudel session"))
+
+  (unless buffer
+    (setq buffer (current-buffer)))
+
+  (with-current-buffer buffer
+    (unless (rudel-buffer-has-document-p)
+      (error "Buffer is not published")))
+
+  ;;
+  (with-slots (connection) rudel-current-session
+    (let ((document (rudel-buffer-document buffer)))
+      (rudel-detach-from-buffer document)
+
+      (rudel-unsubscribe-from connection document)))
+  )
+
+(provide 'rudel)
+;;; rudel.el ends here
diff --git a/emacs.d/lisp/rudel/telepathy/.svn/all-wcprops b/emacs.d/lisp/rudel/telepathy/.svn/all-wcprops
new file mode 100644
index 0000000..e89bd10
--- /dev/null
+++ b/emacs.d/lisp/rudel/telepathy/.svn/all-wcprops
@@ -0,0 +1,11 @@
+K 25
+svn:wc:ra_dav:version-url
+V 43
+/svnroot/rudel/!svn/ver/301/trunk/telepathy
+END
+rudel-telepathy.el
+K 25
+svn:wc:ra_dav:version-url
+V 62
+/svnroot/rudel/!svn/ver/301/trunk/telepathy/rudel-telepathy.el
+END
diff --git a/emacs.d/lisp/rudel/telepathy/.svn/entries b/emacs.d/lisp/rudel/telepathy/.svn/entries
new file mode 100644
index 0000000..ee21fde
--- /dev/null
+++ b/emacs.d/lisp/rudel/telepathy/.svn/entries
@@ -0,0 +1,62 @@
+10
+
+dir
+545
+https://rudel.svn.sourceforge.net/svnroot/rudel/trunk/telepathy
+https://rudel.svn.sourceforge.net/svnroot/rudel
+
+
+
+2009-10-03T01:27:08.697881Z
+301
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+694b31df-dcbb-44e8-af88-74c7ea918228
+
+rudel-telepathy.el
+file
+
+
+
+
+2009-11-18T14:01:46.000000Z
+d4713da73fb5f147e0c7afcbcdb269b9
+2009-10-03T01:27:08.697881Z
+301
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+1882
+
diff --git a/emacs.d/lisp/rudel/telepathy/.svn/text-base/rudel-telepathy.el.svn-base b/emacs.d/lisp/rudel/telepathy/.svn/text-base/rudel-telepathy.el.svn-base
new file mode 100644
index 0000000..3d41643
--- /dev/null
+++ b/emacs.d/lisp/rudel/telepathy/.svn/text-base/rudel-telepathy.el.svn-base
@@ -0,0 +1,76 @@
+;;; rudel-telepathy.el --- A telepathy backend for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, telepathy, backend
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a Rudel backend which realizes session
+;; initiation and transport of Rudel data through freedesktop's
+;; Telepathy framework.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-backend)
+(require 'rudel-transport)
+
+
+;;; Constants
+;;
+
+(defconst rudel-telepathy-version '(0 1)
+  "Version of the telepathy backend for Rudel.")
+
+
+;;;  Class rudel-telepathy-backend
+;;
+
+(defclass rudel-telepathy-backend (rudel-transport-backend)
+  ((capabilities :initform '()))
+  "Class rudel-telepathy-backend ")
+
+(defmethod initialize-instance ((this rudel-telepathy-backend) &rest slots)
+  "Initialize slots of THIS according to SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-telepathy-version))
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'transport)
+		   'telepathy 'rudel-telepathy-backend)
+
+(provide 'rudel-telepathy)
+;;; rudel-telepathy.el ends here
diff --git a/emacs.d/lisp/rudel/telepathy/rudel-telepathy.el b/emacs.d/lisp/rudel/telepathy/rudel-telepathy.el
new file mode 100644
index 0000000..3d41643
--- /dev/null
+++ b/emacs.d/lisp/rudel/telepathy/rudel-telepathy.el
@@ -0,0 +1,76 @@
+;;; rudel-telepathy.el --- A telepathy backend for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, telepathy, backend
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a Rudel backend which realizes session
+;; initiation and transport of Rudel data through freedesktop's
+;; Telepathy framework.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-backend)
+(require 'rudel-transport)
+
+
+;;; Constants
+;;
+
+(defconst rudel-telepathy-version '(0 1)
+  "Version of the telepathy backend for Rudel.")
+
+
+;;;  Class rudel-telepathy-backend
+;;
+
+(defclass rudel-telepathy-backend (rudel-transport-backend)
+  ((capabilities :initform '()))
+  "Class rudel-telepathy-backend ")
+
+(defmethod initialize-instance ((this rudel-telepathy-backend) &rest slots)
+  "Initialize slots of THIS according to SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-telepathy-version))
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'transport)
+		   'telepathy 'rudel-telepathy-backend)
+
+(provide 'rudel-telepathy)
+;;; rudel-telepathy.el ends here
diff --git a/emacs.d/lisp/rudel/wave/.svn/all-wcprops b/emacs.d/lisp/rudel/wave/.svn/all-wcprops
new file mode 100644
index 0000000..5430a3f
--- /dev/null
+++ b/emacs.d/lisp/rudel/wave/.svn/all-wcprops
@@ -0,0 +1,17 @@
+K 25
+svn:wc:ra_dav:version-url
+V 38
+/svnroot/rudel/!svn/ver/345/trunk/wave
+END
+Project.ede
+K 25
+svn:wc:ra_dav:version-url
+V 50
+/svnroot/rudel/!svn/ver/291/trunk/wave/Project.ede
+END
+rudel-wave.el
+K 25
+svn:wc:ra_dav:version-url
+V 52
+/svnroot/rudel/!svn/ver/291/trunk/wave/rudel-wave.el
+END
diff --git a/emacs.d/lisp/rudel/wave/.svn/entries b/emacs.d/lisp/rudel/wave/.svn/entries
new file mode 100644
index 0000000..537adf3
--- /dev/null
+++ b/emacs.d/lisp/rudel/wave/.svn/entries
@@ -0,0 +1,96 @@
+10
+
+dir
+545
+https://rudel.svn.sourceforge.net/svnroot/rudel/trunk/wave
+https://rudel.svn.sourceforge.net/svnroot/rudel
+
+
+
+2009-10-03T02:03:51.626714Z
+345
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+694b31df-dcbb-44e8-af88-74c7ea918228
+
+Project.ede
+file
+
+
+
+
+2009-11-18T14:01:45.000000Z
+74bbb6356abac34a5aa8305ff84a2631
+2009-10-03T01:23:04.047285Z
+291
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+265
+
+rudel-wave.el
+file
+
+
+
+
+2009-11-18T14:01:45.000000Z
+b53a8ef79d48d009a10a0b013e2c69a5
+2009-10-03T01:23:04.047285Z
+291
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+1833
+
diff --git a/emacs.d/lisp/rudel/wave/.svn/text-base/Project.ede.svn-base b/emacs.d/lisp/rudel/wave/.svn/text-base/Project.ede.svn-base
new file mode 100644
index 0000000..af39c6f
--- /dev/null
+++ b/emacs.d/lisp/rudel/wave/.svn/text-base/Project.ede.svn-base
@@ -0,0 +1,14 @@
+;; Object rudel/wave
+;; EDE project file.
+(ede-proj-project "rudel/wave"
+  :name "wave"
+  :file "Project.ede"
+  :targets (list
+   (ede-proj-target-elisp "wave"
+    :name "wave"
+    :path ""
+    :source '("rudel-wave.el")
+    :aux-packages '("rudel")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/wave/.svn/text-base/rudel-wave.el.svn-base b/emacs.d/lisp/rudel/wave/.svn/text-base/rudel-wave.el.svn-base
new file mode 100644
index 0000000..f8e0555
--- /dev/null
+++ b/emacs.d/lisp/rudel/wave/.svn/text-base/rudel-wave.el.svn-base
@@ -0,0 +1,77 @@
+;;; rudel-wave.el --- A Wave backend for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, Wave protocol, backend
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a Rudel protocol backend, which implements the
+;; Wave client protocol.
+
+
+;;; History:
+;;
+;; 0.1 - Initial version
+
+
+;;; Code:
+;;
+
+(require 'rudel-backend)
+(require 'rudel-protocol)
+
+
+;;; Constants
+;;
+
+(defconst rudel-wave-version '(0 1)
+  "Version of the wave backend for Rudel.")
+
+
+;;; Class rudel-wave-backend
+;;
+
+;;;###autoload
+(defclass rudel-wave-backend (rudel-protocol-backend)
+  ((capabilities :initform '(join
+			     chat
+			     track-subscriptions)))
+  "Main class of the Rudel Wave backend. Creates wave client
+connections.")
+
+(defmethod initialize-instance ((this rudel-wave-backend) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-wave-version))
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'protocol)
+		   'wave 'rudel-wave-backend)
+
+(provide 'rudel-wave)
+;;; rudel-wave.el ends here
diff --git a/emacs.d/lisp/rudel/wave/Project.ede b/emacs.d/lisp/rudel/wave/Project.ede
new file mode 100644
index 0000000..af39c6f
--- /dev/null
+++ b/emacs.d/lisp/rudel/wave/Project.ede
@@ -0,0 +1,14 @@
+;; Object rudel/wave
+;; EDE project file.
+(ede-proj-project "rudel/wave"
+  :name "wave"
+  :file "Project.ede"
+  :targets (list
+   (ede-proj-target-elisp "wave"
+    :name "wave"
+    :path ""
+    :source '("rudel-wave.el")
+    :aux-packages '("rudel")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/wave/rudel-wave.el b/emacs.d/lisp/rudel/wave/rudel-wave.el
new file mode 100644
index 0000000..f8e0555
--- /dev/null
+++ b/emacs.d/lisp/rudel/wave/rudel-wave.el
@@ -0,0 +1,77 @@
+;;; rudel-wave.el --- A Wave backend for Rudel
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, Wave protocol, backend
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; This file contains a Rudel protocol backend, which implements the
+;; Wave client protocol.
+
+
+;;; History:
+;;
+;; 0.1 - Initial version
+
+
+;;; Code:
+;;
+
+(require 'rudel-backend)
+(require 'rudel-protocol)
+
+
+;;; Constants
+;;
+
+(defconst rudel-wave-version '(0 1)
+  "Version of the wave backend for Rudel.")
+
+
+;;; Class rudel-wave-backend
+;;
+
+;;;###autoload
+(defclass rudel-wave-backend (rudel-protocol-backend)
+  ((capabilities :initform '(join
+			     chat
+			     track-subscriptions)))
+  "Main class of the Rudel Wave backend. Creates wave client
+connections.")
+
+(defmethod initialize-instance ((this rudel-wave-backend) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-wave-version))
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'protocol)
+		   'wave 'rudel-wave-backend)
+
+(provide 'rudel-wave)
+;;; rudel-wave.el ends here
diff --git a/emacs.d/lisp/rudel/zeroconf/.svn/all-wcprops b/emacs.d/lisp/rudel/zeroconf/.svn/all-wcprops
new file mode 100644
index 0000000..f660614
--- /dev/null
+++ b/emacs.d/lisp/rudel/zeroconf/.svn/all-wcprops
@@ -0,0 +1,17 @@
+K 25
+svn:wc:ra_dav:version-url
+V 42
+/svnroot/rudel/!svn/ver/345/trunk/zeroconf
+END
+Project.ede
+K 25
+svn:wc:ra_dav:version-url
+V 54
+/svnroot/rudel/!svn/ver/260/trunk/zeroconf/Project.ede
+END
+rudel-zeroconf.el
+K 25
+svn:wc:ra_dav:version-url
+V 60
+/svnroot/rudel/!svn/ver/260/trunk/zeroconf/rudel-zeroconf.el
+END
diff --git a/emacs.d/lisp/rudel/zeroconf/.svn/entries b/emacs.d/lisp/rudel/zeroconf/.svn/entries
new file mode 100644
index 0000000..3ab3d1c
--- /dev/null
+++ b/emacs.d/lisp/rudel/zeroconf/.svn/entries
@@ -0,0 +1,96 @@
+10
+
+dir
+545
+https://rudel.svn.sourceforge.net/svnroot/rudel/trunk/zeroconf
+https://rudel.svn.sourceforge.net/svnroot/rudel
+
+
+
+2009-10-03T02:03:51.626714Z
+345
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+694b31df-dcbb-44e8-af88-74c7ea918228
+
+Project.ede
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+5d5760fd4535be2a6e18cc9c42334b05
+2009-10-03T01:06:09.107570Z
+260
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+286
+
+rudel-zeroconf.el
+file
+
+
+
+
+2009-11-18T14:01:44.000000Z
+deed32ca24d718009bd1137e49439fc0
+2009-10-03T01:06:09.107570Z
+260
+scymtym
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+7370
+
diff --git a/emacs.d/lisp/rudel/zeroconf/.svn/text-base/Project.ede.svn-base b/emacs.d/lisp/rudel/zeroconf/.svn/text-base/Project.ede.svn-base
new file mode 100644
index 0000000..7bee2d0
--- /dev/null
+++ b/emacs.d/lisp/rudel/zeroconf/.svn/text-base/Project.ede.svn-base
@@ -0,0 +1,14 @@
+;; Object rudel/obby
+;; EDE project file.
+(ede-proj-project "rudel/zeroconf"
+  :name "zeroconf"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp "zeroconf"
+    :name "zeroconf"
+    :path ""
+    :source '("rudel-zeroconf.el")
+    :aux-packages '("rudel")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/zeroconf/.svn/text-base/rudel-zeroconf.el.svn-base b/emacs.d/lisp/rudel/zeroconf/.svn/text-base/rudel-zeroconf.el.svn-base
new file mode 100644
index 0000000..01ffc0d
--- /dev/null
+++ b/emacs.d/lisp/rudel/zeroconf/.svn/text-base/rudel-zeroconf.el.svn-base
@@ -0,0 +1,253 @@
+;;; rudel-zeroconf.el --- Zeroconf support for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, service, discovery, advertising, zeroconf,
+;;           rendezvous, avahi
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Zeroconf session discovery and advertising for Rudel. The main
+;; class `rudel-zeroconf-backend' implements discovery and advertising
+;; for registered service types. Service types are registered by
+;; adding an element of the form (SERVICE BACKEND) to the
+;; `rudel-zeroconf-service-types'. BACKEND is the symbol of the
+;; protocol backend and SERVICE is the string used as service type in
+;; the Zeroconf record (example: '("_lobby._tcp" obby)).
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl)) ;; first, second
+
+(require 'zeroconf)
+
+(require 'rudel-backend)
+(require 'rudel-session-initiation)
+
+
+;;; Constants and global variables
+;;
+
+(defconst rudel-zeroconf-version '(0 1)
+  "Version of the Zeroconf backend for Rudel.")
+
+(defvar rudel-zeroconf-service-types nil
+  "Service types used by Rudel backends.
+Each element is of the form (SERVICE BACKEND).")
+
+
+;;; Accessors and manipulators for the service list
+;;
+
+(defalias 'rudel-zeroconf-service-type 'first
+  "Return type of service.")
+
+(defalias 'rudel-zeroconf-service-backend 'second
+  "Return backend associated with service type.")
+
+(defun rudel-zeroconf-service (key which)
+  "Return the Zeroconf service type used by BACKEND."
+  (find which rudel-zeroconf-service-types
+	:key key :test (if (eq key 'rudel-zeroconf-service-type)
+			   #'string= #'eq)))
+
+;;;###autoload
+(defun rudel-zeroconf-register-service (type backend)
+  "Add an entry for TYPE with BACKEND to the list of service types.
+BACKEND is the name of the protocol backend handling the service
+type TYPE."
+  (push (list type backend)
+	rudel-zeroconf-service-types))
+
+
+;;; Initialization
+;;
+
+(message "Initializing Zeroconf ...")
+(zeroconf-init)
+
+
+;;; Class rudel-zeroconf-backend
+;;
+
+;;;###autoload
+(defclass rudel-zeroconf-backend (rudel-session-initiation-backend)
+  ((capabilities :initform (discover advertise))
+   (priority     :initform primary))
+  "")
+
+(defmethod initialize-instance ((this rudel-zeroconf-backend) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-zeroconf-version))
+
+(defmethod rudel-discover ((this rudel-zeroconf-backend))
+  "Return a list of session information property lists for Zeroconf-advertised sessions."
+  (mapcar
+   #'rudel-zeroconf-service->plist
+   (remove-if
+    #'null
+    (mapcar
+     #'zeroconf-resolve-service
+     (apply
+      #'append
+      (mapcar
+       #'rudel-zeroconf-services
+       (mapcar #'rudel-zeroconf-service-backend
+	       rudel-zeroconf-service-types))))))
+  )
+
+(defmethod rudel-advertise ((this rudel-session-initiation-backend) info)
+  "Use Zeroconf to advertise the session described by INFO to other users."
+  (let ((name    (plist-get info :name))
+	(backend (plist-get info :backend))
+	(host    (plist-get info :host))
+	(port    (plist-get info :port))
+	(data    (plist-get info :data)))
+    (when backend
+      (apply #'rudel-zeroconf-publish
+	     backend name host port data)))
+  t)
+
+(defmethod rudel-withdraw ((this rudel-session-initiation-backend))
+  "Withdraw Zeroconf record."
+  (error "Not implemented, yet"))
+
+
+;;; Zeroconf wrapper functions
+;;
+
+(defun rudel-zeroconf-services (backend)
+  "List Zeroconf services for BACKEND."
+  (zeroconf-list-services
+   (rudel-zeroconf-service-type
+    (rudel-zeroconf-service
+     #'rudel-zeroconf-service-backend backend))))
+
+(defun rudel-zeroconf-services-present-p (backend)
+  "Check whether there are Zeroconf services for BACKEND."
+  (rudel-zeroconf-services backend))
+
+(defun rudel-zeroconf-publish (backend name host port &rest data)
+  "Publish BACKEND service NAME for HOST and PORT."
+  ;; Try to find the service entry for the protocol backend and
+  ;; publish the service if an entry is found.
+  (let ((service (rudel-zeroconf-service
+		  #'rudel-zeroconf-service-backend backend)))
+    (when service
+      (zeroconf-publish-service
+       name
+       (rudel-zeroconf-service-type service)
+       "local"
+       (concat host ".local")
+       port
+       "" ; address
+       (mapcar
+	(lambda (item)
+	  (concat (car item) "=" (cdr item)))
+	data)
+       )))
+  )
+
+(defun rudel-zeroconf-withdraw (backend name)
+  "Withdraw service NAME for BACKEND."
+  (error "Not implemented, yet"))
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-zeroconf-service->plist (service)
+  "Convert a Zeroconf service record to an info property list."
+  (let* ((type         (zeroconf-service-type service))
+	 (data         (rudel-zeroconf-parse-txt-record
+			(zeroconf-service-txt service)))
+	 (service-type (rudel-zeroconf-service
+			#'rudel-zeroconf-service-type type)))
+    ;; Construct information property list.
+    (list
+     :name       (format "Zeroconf advertised session \"%s\""
+			 (zeroconf-service-name service))
+     :backend    (rudel-backend-get
+		  'protocol
+		  (rudel-zeroconf-service-backend service-type))
+     :host       (zeroconf-service-host service)
+     :port       (zeroconf-service-port service)
+     ;; Encryption defaults to yes to be compatible with Gobby.
+     :encryption (or (not (member :encryption data))
+		     (string= (plist-get data :encryption)
+			      "yes"))))
+  )
+
+(defun rudel-zeroconf-parse-txt-record (record)
+  "Parse RECORD into a property list of keys and values."
+  (apply #'append
+	 (mapcar
+	  (lambda (entry)
+	    (multiple-value-bind (key value) (split-string entry "=")
+	      (list (intern (concat ":" key))
+		    value)))
+	  record))
+  )
+
+
+;;; User interaction
+;;
+
+(defun rudel-zeroconf-read-service (backend)
+  "Retrieve services for BACKEND and read one from user."
+  ;; First, find all matching services for the backend.
+  (let* ((services         (rudel-zeroconf-services backend))
+	 ;; Read one of the names of these services.
+	 (service-name     (completing-read
+			    "Service: "
+			    (mapcar #'zeroconf-service-name services)
+			    nil t))
+	 ;; Retrieve and resolve the selected service object.
+	 (service          (find service-name services
+				 :key  #'zeroconf-service-name
+				 :test #'string=))
+	 (service-resolved (zeroconf-resolve-service service)))
+    ;; Return host and port
+    (list (zeroconf-service-host service-resolved)
+	  (zeroconf-service-port service-resolved)))
+  )
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'session-initiation)
+		   'zeroconf 'rudel-zeroconf-backend)
+
+(provide 'rudel-zeroconf)
+;;; rudel-zeroconf.el ends here
diff --git a/emacs.d/lisp/rudel/zeroconf/Project.ede b/emacs.d/lisp/rudel/zeroconf/Project.ede
new file mode 100644
index 0000000..7bee2d0
--- /dev/null
+++ b/emacs.d/lisp/rudel/zeroconf/Project.ede
@@ -0,0 +1,14 @@
+;; Object rudel/obby
+;; EDE project file.
+(ede-proj-project "rudel/zeroconf"
+  :name "zeroconf"
+  :file "Project.ede"
+  :targets (list 
+   (ede-proj-target-elisp "zeroconf"
+    :name "zeroconf"
+    :path ""
+    :source '("rudel-zeroconf.el")
+    :aux-packages '("rudel")
+    )
+   )
+  )
diff --git a/emacs.d/lisp/rudel/zeroconf/rudel-zeroconf.el b/emacs.d/lisp/rudel/zeroconf/rudel-zeroconf.el
new file mode 100644
index 0000000..01ffc0d
--- /dev/null
+++ b/emacs.d/lisp/rudel/zeroconf/rudel-zeroconf.el
@@ -0,0 +1,253 @@
+;;; rudel-zeroconf.el --- Zeroconf support for Rudel
+;;
+;; Copyright (C) 2008, 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, service, discovery, advertising, zeroconf,
+;;           rendezvous, avahi
+;; X-RCS: $Id:$
+;;
+;; This file is part of Rudel.
+;;
+;; Rudel is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; Rudel is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with Rudel. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Zeroconf session discovery and advertising for Rudel. The main
+;; class `rudel-zeroconf-backend' implements discovery and advertising
+;; for registered service types. Service types are registered by
+;; adding an element of the form (SERVICE BACKEND) to the
+;; `rudel-zeroconf-service-types'. BACKEND is the symbol of the
+;; protocol backend and SERVICE is the string used as service type in
+;; the Zeroconf record (example: '("_lobby._tcp" obby)).
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(eval-when-compile
+  (require 'cl)) ;; first, second
+
+(require 'zeroconf)
+
+(require 'rudel-backend)
+(require 'rudel-session-initiation)
+
+
+;;; Constants and global variables
+;;
+
+(defconst rudel-zeroconf-version '(0 1)
+  "Version of the Zeroconf backend for Rudel.")
+
+(defvar rudel-zeroconf-service-types nil
+  "Service types used by Rudel backends.
+Each element is of the form (SERVICE BACKEND).")
+
+
+;;; Accessors and manipulators for the service list
+;;
+
+(defalias 'rudel-zeroconf-service-type 'first
+  "Return type of service.")
+
+(defalias 'rudel-zeroconf-service-backend 'second
+  "Return backend associated with service type.")
+
+(defun rudel-zeroconf-service (key which)
+  "Return the Zeroconf service type used by BACKEND."
+  (find which rudel-zeroconf-service-types
+	:key key :test (if (eq key 'rudel-zeroconf-service-type)
+			   #'string= #'eq)))
+
+;;;###autoload
+(defun rudel-zeroconf-register-service (type backend)
+  "Add an entry for TYPE with BACKEND to the list of service types.
+BACKEND is the name of the protocol backend handling the service
+type TYPE."
+  (push (list type backend)
+	rudel-zeroconf-service-types))
+
+
+;;; Initialization
+;;
+
+(message "Initializing Zeroconf ...")
+(zeroconf-init)
+
+
+;;; Class rudel-zeroconf-backend
+;;
+
+;;;###autoload
+(defclass rudel-zeroconf-backend (rudel-session-initiation-backend)
+  ((capabilities :initform (discover advertise))
+   (priority     :initform primary))
+  "")
+
+(defmethod initialize-instance ((this rudel-zeroconf-backend) &rest slots)
+  "Initialize slots of THIS with SLOTS."
+  (when (next-method-p)
+    (call-next-method))
+
+  (oset this :version rudel-zeroconf-version))
+
+(defmethod rudel-discover ((this rudel-zeroconf-backend))
+  "Return a list of session information property lists for Zeroconf-advertised sessions."
+  (mapcar
+   #'rudel-zeroconf-service->plist
+   (remove-if
+    #'null
+    (mapcar
+     #'zeroconf-resolve-service
+     (apply
+      #'append
+      (mapcar
+       #'rudel-zeroconf-services
+       (mapcar #'rudel-zeroconf-service-backend
+	       rudel-zeroconf-service-types))))))
+  )
+
+(defmethod rudel-advertise ((this rudel-session-initiation-backend) info)
+  "Use Zeroconf to advertise the session described by INFO to other users."
+  (let ((name    (plist-get info :name))
+	(backend (plist-get info :backend))
+	(host    (plist-get info :host))
+	(port    (plist-get info :port))
+	(data    (plist-get info :data)))
+    (when backend
+      (apply #'rudel-zeroconf-publish
+	     backend name host port data)))
+  t)
+
+(defmethod rudel-withdraw ((this rudel-session-initiation-backend))
+  "Withdraw Zeroconf record."
+  (error "Not implemented, yet"))
+
+
+;;; Zeroconf wrapper functions
+;;
+
+(defun rudel-zeroconf-services (backend)
+  "List Zeroconf services for BACKEND."
+  (zeroconf-list-services
+   (rudel-zeroconf-service-type
+    (rudel-zeroconf-service
+     #'rudel-zeroconf-service-backend backend))))
+
+(defun rudel-zeroconf-services-present-p (backend)
+  "Check whether there are Zeroconf services for BACKEND."
+  (rudel-zeroconf-services backend))
+
+(defun rudel-zeroconf-publish (backend name host port &rest data)
+  "Publish BACKEND service NAME for HOST and PORT."
+  ;; Try to find the service entry for the protocol backend and
+  ;; publish the service if an entry is found.
+  (let ((service (rudel-zeroconf-service
+		  #'rudel-zeroconf-service-backend backend)))
+    (when service
+      (zeroconf-publish-service
+       name
+       (rudel-zeroconf-service-type service)
+       "local"
+       (concat host ".local")
+       port
+       "" ; address
+       (mapcar
+	(lambda (item)
+	  (concat (car item) "=" (cdr item)))
+	data)
+       )))
+  )
+
+(defun rudel-zeroconf-withdraw (backend name)
+  "Withdraw service NAME for BACKEND."
+  (error "Not implemented, yet"))
+
+
+;;; Miscellaneous functions
+;;
+
+(defun rudel-zeroconf-service->plist (service)
+  "Convert a Zeroconf service record to an info property list."
+  (let* ((type         (zeroconf-service-type service))
+	 (data         (rudel-zeroconf-parse-txt-record
+			(zeroconf-service-txt service)))
+	 (service-type (rudel-zeroconf-service
+			#'rudel-zeroconf-service-type type)))
+    ;; Construct information property list.
+    (list
+     :name       (format "Zeroconf advertised session \"%s\""
+			 (zeroconf-service-name service))
+     :backend    (rudel-backend-get
+		  'protocol
+		  (rudel-zeroconf-service-backend service-type))
+     :host       (zeroconf-service-host service)
+     :port       (zeroconf-service-port service)
+     ;; Encryption defaults to yes to be compatible with Gobby.
+     :encryption (or (not (member :encryption data))
+		     (string= (plist-get data :encryption)
+			      "yes"))))
+  )
+
+(defun rudel-zeroconf-parse-txt-record (record)
+  "Parse RECORD into a property list of keys and values."
+  (apply #'append
+	 (mapcar
+	  (lambda (entry)
+	    (multiple-value-bind (key value) (split-string entry "=")
+	      (list (intern (concat ":" key))
+		    value)))
+	  record))
+  )
+
+
+;;; User interaction
+;;
+
+(defun rudel-zeroconf-read-service (backend)
+  "Retrieve services for BACKEND and read one from user."
+  ;; First, find all matching services for the backend.
+  (let* ((services         (rudel-zeroconf-services backend))
+	 ;; Read one of the names of these services.
+	 (service-name     (completing-read
+			    "Service: "
+			    (mapcar #'zeroconf-service-name services)
+			    nil t))
+	 ;; Retrieve and resolve the selected service object.
+	 (service          (find service-name services
+				 :key  #'zeroconf-service-name
+				 :test #'string=))
+	 (service-resolved (zeroconf-resolve-service service)))
+    ;; Return host and port
+    (list (zeroconf-service-host service-resolved)
+	  (zeroconf-service-port service-resolved)))
+  )
+
+
+;;; Autoloading
+;;
+
+;;;###autoload
+(rudel-add-backend (rudel-backend-get-factory 'session-initiation)
+		   'zeroconf 'rudel-zeroconf-backend)
+
+(provide 'rudel-zeroconf)
+;;; rudel-zeroconf.el ends here
diff --git a/emacs.elc b/emacs.elc
index 103c6d3..bfdf0ad 100644
--- a/emacs.elc
+++ b/emacs.elc