bug#5846: 23.1.95.1 problems with mercurial commands in *VC Annotate* buffer on Windows

[Andy Moreton]

On Sat 17 Apr 2010, Chong Yidong wrote:

>> In GNU Emacs 23.1.95.1 (i386-mingw-nt5.1.2600)
>>
>> Using Mercurial from TortoiseHg 0.9, which contains Mercurial-1.4,
>> Python-2.5.4, PyGTK-2.12.1, GTK-2.16.1
>>
>> Start emacs with "c:\emacs\23.1.95\bin\emacs -Q"
>> Open a file from a mercurial repository
>> Type "C-x v g" to annotate the file
>>
>> In the *VC Annotate* buffer:
>> 1) Type "l" (vc-annotate-show-log-revision-at-line)
>>    The Hg command runs, but the *vc-change-log* buffer is empty
>>
>> 2) Type "f" (vc-annotate-find-revision-at-line)
>>    Emacs displays a message "Cannot open load file: vc-nil"
>
> It looks like this is the same bug as the one just fixed in
>
>   http://debbugs.gnu.org/cgi/bugreport.cgi?bug=5960
>
> You can find the patch there, and it will be included in the next
> pretest.
>
> Thanks for the bug report.

I've rebuilt emacs from the emacs-23 branch today, and the problems are
still there. In addition, the modeline display shows "Hg-" suggesting that
emacs is not correctly detecting the working revision of the file.

    AndyM