From: "Clément Pit-Claudel" <cpitclaudel@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
Subject: Re: How can I undo a change from a modification-hook?
Date: Wed, 26 Apr 2017 09:45:50 -0400 [thread overview]
Message-ID: <87fd6638-f46a-95f2-8b70-f271f5daeb63@gmail.com> (raw)
In-Reply-To: <jwvshkvcqik.fsf-monnier+gmane.emacs.devel@gnu.org>
> Technically you can, but it's a bit messy and will likely not be
> 100% reliable. Personally, in your case, I wouldn't bother doing it,
> but here's how I'd do it otherwise:
Thanks for the answer! The context is Proof General: it's very annoying that running whitespace-cleanup retracts what looks like arbitrary sections of the buffer.
On 2017-04-26 08:26, Stefan Monnier wrote:
> [ and while
> you're there, check that the beg/end/len is within the announces
> beg/end stashed earlier, and if it's not just don't do anything
> since it means the stash buffer-undo-list is likely unrelated. ]
This part worries me. Could you clarify when this would happen?
Not doing anything is risky, because it puts the buffer in an inconsistent state wrt the subprocess :/
Thanks!
next prev parent reply other threads:[~2017-04-26 13:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-26 7:02 How can I undo a change from a modification-hook? Clément Pit--Claudel
2017-04-26 12:26 ` Stefan Monnier
2017-04-26 13:45 ` Clément Pit-Claudel [this message]
2017-04-26 13:52 ` Stefan Monnier
2017-04-26 14:23 ` Clément Pit-Claudel
2017-04-26 14:51 ` Stefan Monnier
2017-04-26 16:38 ` Clément Pit-Claudel
2017-04-26 18:43 ` Stefan Monnier
2017-04-26 19:02 ` Clément Pit-Claudel
2017-04-27 12:48 ` Stefan Monnier
2017-04-27 12:58 ` Clément Pit-Claudel
2017-04-27 17:36 ` Stefan Monnier
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