Subject: bug#13949: 24.3.50; `fill-paragraph' should not always put the buffer as modified

From: Eli Zaretskii <[email-masked]>
Date: Thu, 14 Mar 2013 20:49:06 +0200

> Date: Thu, 14 Mar 2013 19:34:40 +0100
> From: Andreas Röhler <[email-masked]>
> 
> If fill-paragraph is at stake only, store paragraph in a string at beginning and
> compare the result should be enough to reset the modify flag if justified.

It is not uncommon to have very large buffers with a single
paragraph.  What you suggest is hardly memory-efficient.