GNU bug report logs - #16377
Undo Tree regression: (error "Unrecognized entry in undo list undo-tree-canary")

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Package: emacs;

Reported by: Barry OReilly <gundaetiapo <at> gmail.com>

Date: Tue, 7 Jan 2014 00:33:02 UTC

Severity: normal

Merged with 16523

Done: Barry OReilly <gundaetiapo <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #30 received at 16377 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Toby Cubitt <toby-dated-1391619923.a57a98 <at> dr-qubit.org>
Cc: 16377 <at> debbugs.gnu.org, gundaetiapo <at> gmail.com
Subject: Re: bug#16377: Undo Tree regression: (error "Unrecognized entry in
 undo list undo-tree-canary")
Date: Wed, 22 Jan 2014 13:56:12 -0500

> Are there circumstances in which `primitive-undo' doesn't add to
> `buffer-undo-list'?

Of course: if there are no changes until the next undo boundary, then
primitive-undo just doesn't do anything other than pop that
undo boundary.
And primitive-undo doesn't add any boundary, so it can end up with no
change at all to buffer-undo-list.


        Stefan
This bug report was last modified 8 years and 12 days ago.

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