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-rw-r--r--XMonad/Prompt.hs12
1 files changed, 7 insertions, 5 deletions
diff --git a/XMonad/Prompt.hs b/XMonad/Prompt.hs
index 2548a56..0ae657e 100644
--- a/XMonad/Prompt.hs
+++ b/XMonad/Prompt.hs
@@ -216,10 +216,12 @@ class XPrompt t where
completionFunction :: t -> ComplFunction
completionFunction t = \_ -> return ["Completions for " ++ (showXPrompt t) ++ " could not be loaded"]
- -- | When the prompt has multiple modes, this function is called
- -- when the user picked an item from the autocompletion list.
- -- The first argument is the autocompleted item's text.
- -- The second argument is the query made by the user (written in the prompt's buffer).
+ -- | When the prompt has multiple modes (created with mkXPromptWithModes), this function is called
+ -- when the user picks an item from the autocompletion list.
+ -- The first argument is the prompt (or mode) on which the item was picked
+ -- The first string argument is the autocompleted item's text.
+ -- The second string argument is the query made by the user (written in the prompt's buffer).
+ -- See XMonad/Actions/Launcher.hs for a usage example.
modeAction :: t -> String -> String -> X ()
modeAction _ _ _ = return ()
@@ -434,7 +436,7 @@ mkXPromptWithModes modes conf = do
XPMultipleModes ms -> let
action = modeAction $ W.focus ms
in action (command st') $ (fromMaybe "" $ highlightedCompl st')
- _ -> return () --This should never happen, we are creating a prompt with multiple modes, so its operationMode should have been constructed with XPMultipleMode
+ _ -> error "The impossible occurred: This prompt runs with multiple modes but they could not be found." --we are creating a prompt with multiple modes, so its operationMode should have been constructed with XPMultipleMode
else
return ()