GNU bug report logs - #15771
24.3.50; M-q on comment lines marks the buffer modified when it shouldn't

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From: Jambunathan K <kjambunathan <at> gmail.com>
To: 15771 <at> debbugs.gnu.org
Subject: bug#15771: 24.3.50; M-q on comment lines marks the buffer modified when it shouldn't
Date: Thu, 31 Oct 2013 22:50:09 +0530

[Message part 1 (text/plain, inline)]

Here is the recipe.

C-x C-f comment.el RET 
M < 
M q 
C-x C-s 
M q 
M-x diff-buffer-with-file RET C-x C-f comment.el RET 

Here is what the diff produces.  When there are no differences, why is
the buffer marked as modified?

--8<---------------cut here---------------start------------->8---
diff -pub --label /home/kjambunathan/comment.el --label \#\<buffer\ comment.el\> /home/kjambunathan/comment.el /tmp/buffer-content-2444dnM

Diff finished (no differences).  Thu Oct 31 22:45:13 2013
--8<---------------cut here---------------end--------------->8---

[comment.el (application/emacs-lisp, attachment)]

[Message part 3 (text/plain, inline)]

----------------------------------------------------------------

In GNU Emacs 24.3.50.4 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
 of 2013-10-30 on debian-6.05
Bzr revision: 114868 rgm <at> gnu.org-20131030102316-8vif7u6ecyo3yieg
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
System Description:	Debian GNU/Linux 6.0.5 (squeeze)

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