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From: Marcin Borkowski <mbork@mbork.pl>
To: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: Is there a way to know if this-command altered the buffer?
Date: Wed, 12 May 2021 05:33:30 +0200	[thread overview]
Message-ID: <87tun8wrqt.fsf@mbork.pl> (raw)

Hi all,

I want to run some function in a certain hook.  This function will
update some info displayed using an overlay.  The info depends on the
buffer contents and is pretty expensive to compute, so I'd like to only
display it if the buffer really changed.

Is there a way to know if `this-command' actually changed the buffer (as
opposed to e.g. point motion)?

TIA,

-- 
Marcin Borkowski
http://mbork.pl



             reply	other threads:[~2021-05-12  3:33 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-12  3:33 Marcin Borkowski [this message]
2021-05-12  4:27 ` Is there a way to know if this-command altered the buffer? Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-12  5:39   ` Marcin Borkowski

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