From 98240e03ca298c400d29699293a0cc88de51017d Mon Sep 17 00:00:00 2001
From: Don Stewart <dons@galois.com>
Date: Sat, 22 Mar 2008 05:16:54 +0100
Subject: comments

darcs-hash:20080322041654-cba2c-a02ffa00d03a515c00ba04f7efd0281982769e22
---
 XMonad/Core.hs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/XMonad/Core.hs b/XMonad/Core.hs
index a25b47e..1603034 100644
--- a/XMonad/Core.hs
+++ b/XMonad/Core.hs
@@ -270,7 +270,8 @@ class Show (layout a) => LayoutClass layout a where
     --
     -- Layouts which do not need access to the 'X' monad to decide how
     -- to handle messages should implement 'pureMessage' instead of
-    -- 'handleMessage'.
+    -- 'handleMessage' (this restricts the risk of error, and makes
+    -- testing much easier).
     handleMessage :: layout a -> SomeMessage -> X (Maybe (layout a))
     handleMessage l  = return . pureMessage l
 
-- 
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