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

From: Eli Zaretskii <[email-masked]>
Date: Sat, 10 Jun 2023 09:01:37 +0300

> Date: Fri, 9 Jun 2023 22:27:37 +0200
> Cc: [email-masked], [email-masked]
> From: Jens Schmidt <[email-masked]>
> 
> emacs -Q (from emacs-29)
> <visit git-controlled file, say README>
> 
> ;; current buffer equals README
> C-x v l
> ;; current buffer equals *vc-change-log*
> C-h v vc-parent-buffer
> => #<buffer README>
> 
> ;; current buffer equals *vc-change-log*
> C-x v l
> C-h v vc-parent-buffer
> => #<buffer *vc-change-log*>
> 
> ;; current buffer equals *vc-change-log*
> C-x v l
> ;; git log of whole repository is displayed, not of README

Thanks for the explanations.

> Not all VC commands expose this problem.

Why do you think it's a problem?  I can justify this behavior, at
least in some use cases.