GNU bug report logs - #40670
28.0.50; Regression: vc-print-log doesn't work with TRAMP because vc-git isn't initialized

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Dima Kogan <dima <at> secretsauce.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; Regression: vc-print-log doesn't work with TRAMP because
 vc-git isn't initialized
Date: Thu, 16 Apr 2020 13:07:19 -0700

Hi. I'm using a bleeding-edge emacs build from git. Today.

The problem:

1. emacs -Q

2. C-x C-f /ssh:host:file

   Open any file that lives in a git repo on a remote server

3. C-x v l

   I expect to see the git log for this file, but I get an error: "File
   is not under version control". The modeline doesn't show that emacs
   recognized this as a git file. Also, the only "vc-git-..." function
   that emacs knows about at this point is vc-git-registered. Clearly
   something was supposed to initialize vc-git but that didn't happen.
   As a workaround I CAN do:

4. C-x v L

   This does work to show me the git history of this whole project. This
   loaded vc-git, so I can now go back to the earlier buffer, and C-x v
   l works now


Thanks!

Message #8 received at 40670 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Dima Kogan <dima <at> secretsauce.net>
Cc: 40670 <at> debbugs.gnu.org
Subject: Re: bug#40670: 28.0.50; Regression: vc-print-log doesn't work with
 TRAMP because vc-git isn't initialized
Date: Fri, 17 Apr 2020 15:11:48 +0200

Dima Kogan <dima <at> secretsauce.net> writes:

> Hi. I'm using a bleeding-edge emacs build from git. Today.

Hi Dima,

> The problem:
>
> 1. emacs -Q
>
> 2. C-x C-f /ssh:host:file
>
>    Open any file that lives in a git repo on a remote server
>
> 3. C-x v l
>
>    I expect to see the git log for this file, but I get an error: "File
>    is not under version control". The modeline doesn't show that emacs
>    recognized this as a git file. Also, the only "vc-git-..." function
>    that emacs knows about at this point is vc-git-registered. Clearly
>    something was supposed to initialize vc-git but that didn't happen.
>    As a workaround I CAN do:
>
> 4. C-x v L
>
>    This does work to show me the git history of this whole project. This
>    loaded vc-git, so I can now go back to the earlier buffer, and C-x v
>    l works now

Thanks for the report. I've applied git bisect. Looks like commit
76b3bd8cbb9a0a01941d9c1766c054960e4bfd97 (Improve Tramp cache for
asynchronous processes) has broken Emacs here.

Since I'm the author of that patch, I'll debug. Will report later.

> Thanks!

Best regards, Michael.

Message #11 received at 40670 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Dima Kogan <dima <at> secretsauce.net>
Cc: 40670 <at> debbugs.gnu.org
Subject: Re: bug#40670: 28.0.50; Regression: vc-print-log doesn't work with
 TRAMP because vc-git isn't initialized
Date: Tue, 21 Apr 2020 13:35:38 +0200

Michael Albinus <michael.albinus <at> gmx.de> writes:

Hi Dima,

>> The problem:
>>
>> 1. emacs -Q
>>
>> 2. C-x C-f /ssh:host:file
>>
>>    Open any file that lives in a git repo on a remote server
>>
>> 3. C-x v l
>>
>>    I expect to see the git log for this file, but I get an error: "File
>>    is not under version control". The modeline doesn't show that emacs
>>    recognized this as a git file. Also, the only "vc-git-..." function
>>    that emacs knows about at this point is vc-git-registered. Clearly
>>    something was supposed to initialize vc-git but that didn't happen.
>>    As a workaround I CAN do:
>>
>> 4. C-x v L
>>
>>    This does work to show me the git history of this whole project. This
>>    loaded vc-git, so I can now go back to the earlier buffer, and C-x v
>>    l works now
>
> Thanks for the report. I've applied git bisect. Looks like commit
> 76b3bd8cbb9a0a01941d9c1766c054960e4bfd97 (Improve Tramp cache for
> asynchronous processes) has broken Emacs here.
>
> Since I'm the author of that patch, I'll debug. Will report later.

It was a little bit tricky to understand, but I believe I've fixed it
now with commit f212daf0a96999b8c1e63217c22a86d6e1671687. Could you,
pls, check?

>> Thanks!

Best regards, Michael.

Message #18 received at 40670-done <at> debbugs.gnu.org (full text, mbox):

From: Dima Kogan <dima <at> secretsauce.net>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 40670-done <at> debbugs.gnu.org
Subject: Re: bug#40670: 28.0.50; Regression: vc-print-log doesn't work with
 TRAMP because vc-git isn't initialized
Date: Tue, 21 Apr 2020 16:28:44 -0700

Michael Albinus <michael.albinus <at> gmx.de> writes:

> It was a little bit tricky to understand, but I believe I've fixed it
> now with commit f212daf0a96999b8c1e63217c22a86d6e1671687. Could you,
> pls, check?

It works now. Thanks you very much!! I'm closing the bug.

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