From: Barry Margolin <barmar@alum.mit.edu>
To: help-gnu-emacs@gnu.org
Subject: Re: Reverting but keeping undo
Date: Thu, 30 May 2013 14:45:09 -0400 [thread overview]
Message-ID: <barmar-58AB2F.14450930052013@news.eternal-september.org> (raw)
In-Reply-To: mailman.699.1369939338.22516.help-gnu-emacs@gnu.org
In article <mailman.699.1369939338.22516.help-gnu-emacs@gnu.org>,
Michael Heerdegen <michael_heerdegen@web.de> wrote:
> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>
> > > `revert-buffer' discards undo history.
> >
> > FWIW, I just installed a patch in Emacs's trunk which makes that
> > revert-buffer doesn't discard undo history any more.
>
> I wonder how that works. Generally, the undo history belongs to a
> buffer content different from the content after reverting. Does your
> patch prevent surprises like "undoing" changes that were never made to
> the newly read-in buffer content?
Maybe the first thing in the undo history is the revert itself. So when
you undo, you get back the version of the buffer before reverting, and
further undoes then operate on that content.
--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
next prev parent reply other threads:[~2013-05-30 18:45 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-15 10:38 Reverting but keeping undo Óscar Fuentes
2013-05-16 5:29 ` W. Greenhouse
2013-05-16 15:10 ` Óscar Fuentes
2013-05-29 1:52 ` Stefan Monnier
2013-05-29 3:09 ` Drew Adams
2013-05-29 3:27 ` Dmitry Gutov
2013-05-29 5:13 ` Drew Adams
2013-05-29 12:26 ` Dmitry Gutov
2013-05-29 13:55 ` Drew Adams
2013-05-29 15:21 ` Dmitry Gutov
2013-05-29 16:33 ` Drew Adams
2013-05-29 17:51 ` Dmitry Gutov
[not found] ` <mailman.605.1369845207.22516.help-gnu-emacs@gnu.org>
2013-05-29 18:42 ` Dan Espen
2013-05-29 13:48 ` Stefan Monnier
[not found] ` <mailman.562.1369804408.22516.help-gnu-emacs@gnu.org>
2013-05-29 13:25 ` Dan Espen
2013-05-29 16:26 ` Drew Adams
2013-05-30 18:48 ` Michael Heerdegen
2013-05-30 18:41 ` Michael Heerdegen
2013-05-30 19:19 ` Óscar Fuentes
2013-05-30 21:26 ` Stefan Monnier
2013-05-30 22:05 ` Michael Heerdegen
[not found] ` <mailman.728.1369951538.22516.help-gnu-emacs@gnu.org>
2013-05-30 23:59 ` Dan Espen
2013-05-31 0:58 ` Stefan Monnier
[not found] ` <mailman.738.1369961954.22516.help-gnu-emacs@gnu.org>
2013-05-31 1:21 ` Dan Espen
2013-05-31 2:28 ` Drew Adams
2013-05-31 16:05 ` Michael Heerdegen
2013-05-31 18:29 ` Óscar Fuentes
[not found] ` <mailman.767.1370016367.22516.help-gnu-emacs@gnu.org>
2013-05-31 17:22 ` Dan Espen
2013-05-31 18:08 ` Barry Margolin
[not found] ` <mailman.699.1369939338.22516.help-gnu-emacs@gnu.org>
2013-05-30 18:45 ` Barry Margolin [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-05-31 16:49 Barry OReilly
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