bug#19341: Change Log mode filling of multi-line file lists

[Eli Zaretskii <eliz@gnu.org>]

> From: Glenn Morris <rgm@gnu.org>
> Cc: 19341@debbugs.gnu.org
> Date: Wed, 10 Dec 2014 22:41:43 -0500
> 
> Eli Zaretskii wrote:
> >> But Change Log mode fills such lines as:
> >> 
> >>     * file1, file2, file3, file4, file5, file6, file7, file8, file9,
> >>     file10, file11:
> >> 
> >> Please could it use the former format.
> >
> > It does neither.  It does this instead:
> >
> > 	* file1:
> >
> > 	* file2:
> >
> > 	* file3:
> 
> Really?
> 
> You type:
> 
>      * file1, file2, file3, ...
> 
> and auto-fill gives you the format you quote?

Well, if you just type manually a bunch of file names, how is Emacs to
know they are file names?  You can format it any way you like, it's
just text as far as Emacs is concerned.

The format I show above is produced by "C-x 4 a" and friends, when you
type that command in several buffers one after the other.

> But that's not really relevant AFAICS, since it's not the format I
> asked for.

How do you expect Emacs to distinguish between a list of files and
arbitrary text, in your scenario?  You only want it to do that
for files, right?