GNU bug report logs - #63949
30.0.50; `vc-print-log´ does not erase buffer when called from *vc-change-log* buffer, at least for CVS logs

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Message #26 received at 63949 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Jens Schmidt <jschmidt4gnu <at> vodafonemail.de>
Cc: 63949 <at> debbugs.gnu.org, manuel <at> ledu-giraud.fr
Subject: Re: bug#63949: 30.0.50;
 `vc-print-log´ does not erase buffer when called
 from *vc-change-log* buffer, at least for CVS logs
Date: Fri, 09 Jun 2023 09:09:36 +0300

> Cc: 63949 <at> debbugs.gnu.org
> Date: Fri, 9 Jun 2023 00:10:57 +0200
> From:  Jens Schmidt via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> Caused by commit d494833d47968fcd97ba549654a259d6fb6c2eee.

Which means this was a regression in Emacs 28, and we should try to
fix it in Emacs 29.

> There is another subtle change to (most likely) that, which seems to 
> affect all backends: When calling `vc-print-log' from 
> *vc-change-buffer*, it now modifies the VC parent buffer to itself, 
> which is of course incorrect.

What do you mean by "modifies the VC parent buffer to itself"?  Do you
mean that vc-print-log makes the *vc-change-buffer* be the VC parent
buffer?  If so, why is this incorrect?

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