GNU bug report logs - #33341
27.0.50; Undo log merging and change groups

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Package: emacs;

Reported by: Michael Heerdegen <michael_heerdegen <at> web.de>

Date: Sun, 11 Nov 2018 07:52:01 UTC

Severity: normal

Found in version 27.0.50

Done: Michael Heerdegen <michael_heerdegen <at> web.de>

Bug is archived. No further changes may be made.

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Message #17 received at 33341 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, 33341 <at> debbugs.gnu.org
Subject: Re: bug#33341: 27.0.50; Undo log merging and change groups
Date: Thu, 26 Nov 2020 21:26:03 +0100

Michael Heerdegen <michael_heerdegen <at> web.de> writes:

#+begin_src emacs-lisp
(defun my-test-change-groups ()
  (interactive)
  (insert "0\n")
  (let ((g (prepare-change-group)))
    (activate-change-group g)
    (insert "b\n")
    (insert "c\n")
    (cancel-change-group g)))
#+end_src

Adding an explicit `undo-boundary' call before preparing the change
group fixes the problem for me.  Should `prepare-change-group' do
something like that implicitly?

Michael.
This bug report was last modified 4 years and 172 days ago.

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