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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Toby Cubitt <toby-dated-1391619923.a57a98@dr-qubit.org>
Cc: 16377@debbugs.gnu.org, gundaetiapo@gmail.com
Subject: bug#16377: Undo Tree regression: (error "Unrecognized entry in undo list undo-tree-canary")
Date: Wed, 22 Jan 2014 13:56:12 -0500	[thread overview]
Message-ID: <jwv7g9rzw20.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <20140122170518.GA19716@c3po> (Toby Cubitt's message of "Wed, 22 Jan 2014 17:05:18 +0000")

> 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





  reply	other threads:[~2014-01-22 18:56 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-07  0:32 bug#16377: Undo Tree regression: (error "Unrecognized entry in undo list undo-tree-canary") Barry OReilly
2014-01-07  4:14 ` Toby Cubitt
2014-01-22  3:23   ` Barry OReilly
2014-01-22 17:08     ` bug#16523: " Toby Cubitt
2014-01-08  3:37 ` bug#16377: " Toby Cubitt
2014-01-22  0:05   ` Barry OReilly
     [not found]     ` <20140122141701.GA6728@c3po>
2014-01-22 15:26       ` Barry OReilly
2014-01-22 17:05         ` Toby Cubitt
2014-01-22 18:56           ` Stefan Monnier [this message]
2014-01-22 21:30             ` Toby Cubitt
2017-07-06  0:33 ` Keith David Bershatsky
2017-07-06  5:01 ` Keith David Bershatsky
2017-07-06  5:35   ` Stefan Monnier
2017-07-06  6:25 ` Keith David Bershatsky
2017-07-06  9:02   ` Toby Cubitt
2017-07-06  9:47     ` Toby Cubitt

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