GNU bug report logs - #57816
28.2; Renaming a help buffer from help-mode-hook

Previous Next

Full log

View this message in rfc822 format

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Damien Cassou <damien <at> cassou.me>
Cc: 57816 <at> debbugs.gnu.org
Subject: bug#57816: 28.2; Renaming a help buffer from help-mode-hook
Date: Fri, 16 Sep 2022 13:51:26 +0200

Damien Cassou <damien <at> cassou.me> writes:

> In GNU Emacs 28.2, I would like to automatically rename help buffers so
> their name reflect their content. For example, I want *Help: car*
> instead of just *Help* for the help buffer of `car'. Unfortunately,
> adding #'rename-buffer to `help-mode-hook' doesn't work as this results
> in 2 buffers instead of just one:
>
>   emacs --batch -Q \
>     --eval "(add-hook 'help-mode-hook (lambda () (rename-buffer \"*foo*\")))" \
>     --eval "(describe-function #'describe-function)" \
>     --eval "(prin1 (cons (get-buffer \"*Help*\") (get-buffer \"*foo*\")))"
>
> prints
>
>   (#<buffer *Help*> . #<buffer *foo*>)
>
> After the "rename", there is still a buffer with the old name. Is there
> a more correct way to do this?

I can reproduce this in Emacs 28.2, but not in Emacs 29, so it looks
like this has been fixed already.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.