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diff --git a/XMonad/Actions/WithAll.hs b/XMonad/Actions/WithAll.hs
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+-----------------------------------------------------------------------------
+-- |
+-- Module       : XMonad.Actions.WithAll
+-- License      : BSD3-style (see LICENSE)
+-- Stability    : unstable
+-- Portability  : unportable
+--
+-- Provides functions for performing a given action on all windows of
+-- the current workspace.
+-----------------------------------------------------------------------------
+
+module XMonad.Actions.WithAll (
+    -- * Usage
+    -- $usage
+    sinkAll, withAll,
+    withAll', killAll) where
+
+import Data.Foldable hiding (foldr)
+
+import XMonad
+import XMonad.Core
+import XMonad.Operations
+import XMonad.StackSet
+
+-- $usage
+--
+-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
+--
+-- > import XMonad.Actions.WithAll
+--
+-- then add a keybinding; for example:
+--
+--     , ((modMask x .|. shiftMask, xK_t), sinkAll)
+--
+-- For detailed instructions on editing your key bindings, see
+-- "XMonad.Doc.Extending#Editing_key_bindings".
+
+-- | Un-float all floating windows on the current workspace.
+sinkAll :: X ()
+sinkAll = withAll' sink
+
+-- | Apply a function to all windows on the current workspace.
+withAll' :: (Window -> WindowSet -> WindowSet) -> X ()
+withAll' f = windows $ \ws -> let all' = integrate' . stack . workspace . current $ ws
+                              in foldr f ws all'
+
+-- | Execute an 'X' action for each window on the current workspace.
+withAll :: (Window -> X ()) -> X()
+withAll f = withWindowSet $ \ws -> let all' = integrate' . stack . workspace . current $ ws
+                                   in forM_ all' f
+
+-- | Kill all the windows on the current workspace.
+killAll :: X()
+killAll = withAll killWindow
+\ No newline at end of file