bug#33328: 27.0.50; Extend Emacs bug report

[Achim Gratz]

Eli Zaretskii writes:
>> It is quite useless to ask which branch a given commit is on, since it
>> could be on any number of branches, only some of which might be shared
>> between your repo and the repo of the reporter.
>
> In general, yes.  But not in Emacs development, not with public
> development branches anyway.

You'd have to make a stipulation that the bug report must be made from
"public" branches only.  I don't think that'll work.  It's possible to
ask for the upstream branch that commit was in, which works until there
are intermediate clones used (i.e. the parent repo must be the public
one for it to work):

~/lisp/emacs-master> git branch -r --contains d2a07b9
  origin/feature/tramp-thread-safe
  origin/master
  origin/scratch/accurate-warning-pos

So as long as you keep your own repo just one level away from the public
one, the commit is all you need to determine which branches it was
possibly on, but you still can't tell which exact branch was actually
checked out (if any tracking branches even existed at the local repo)
for any particular bug report.


Regards,
Achim.
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