bug#33328: 27.0.50; Extend Emacs bug report

[Glenn Morris]

Michael Albinus wrote:

>> Sorry for the slow reply, but given the hash from emacs-repository-version,
>> doesn't a command like "git name-rev HASH" give you this information,
>> without you needing to store extra information in the Emacs binary?
>
> Anything goes of course, but is it really a problem? A short string
> shouldn't hurt.

The code to implement this doesn't seem that small, and seems redundant
to me.

http://lists.gnu.org/r/emacs-diffs/2018-11/msg00072.html

> I use this kind of information also in Tramp (see variable
> tramp-repository-branch), and it would be an additional burden always to
> use call-process for just opening a new debug buffer.

I meant, when you get a bug report, if you care which branch it came
from, and it isn't obvious from the version number, just use
git name-rev to find out. You will presumably be looking at the git log
anyway for debugging.