GNU bug report logs - #60467
30.0.50; primitive-undo: Changes to be undone by function different from announced

Previous Next

Full log

Message #145 received at 60467 <at> debbugs.gnu.org (full text, mbox):

From: sbaugh <at> catern.com
To: 60467 <at> debbugs.gnu.org
Cc: frederic.giquel <at> laposte.net, Gregory Heytings <gregory <at> heytings.org>,
 acm <at> muc.de, yantar92 <at> posteo.net, monnier <at> iro.umontreal.ca
Subject: Re: bug#60467: 30.0.50; primitive-undo: Changes to be undone by
 function different from announced
Date: Tue, 04 Jul 2023 00:03:05 +0000 (UTC)

Incidentally, this bug has an easy reproduction in emacs -Q on Emacs 29
and before:

(with-temp-buffer
  (insert "foo")
  (setq-local buffer-undo-list nil
              comment-start    ";")
  (comment-line 1))

which produces the "combine-change-calls: buffer-undo-list broken"
warning.  This is easy to trigger in practice: simply open a file
already containing text, and comment a line as your first action.

Anyway, this was also fixed by Stefan's change 977630b5285809a57e50,
* lisp/subr.el (combine-change-calls-1): Fix bug#60467

(I send this email just because I spent some time tracking this down
only to find it was already fixed.  Maybe my smallish reproducer will
somehow be helpful to someone...)

Previous Next

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