bug#22083: 25.0.50; hg: adding tag enhances the rev, modeline does not reflect

[Eli Zaretskii]

> Cc: 22083@debbugs.gnu.org, oub@mat.ucm.es
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Fri, 4 Dec 2015 19:54:25 +0200
> 
> >> 'git describe' output can be fairly long (e.g. 1.11.0-55-gegegege)
> >
> > We could lose the gegegege part.
> 
> gegegege can be immediately useful (one can pass it to 'git show', etc). 
> It's the preceding part that doesn't look particularly useful to me.

If the SHA1 sum is deemed more important, we can only show that.

> > There's nothing else in Git that's comparable to a revision number, I
> > think.
> 
> That's only if you expect the revision identifier to be a number. I 
> don't see a lot of reasons to do that.

The only reason is to be compatible with other VCSes.