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From: Michael Heerdegen <michael_heerdegen@web.de>
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Subject: Re: A strange issue with buffer-undo-list
Date: Wed, 24 Feb 2021 01:43:22 +0100
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Marcin Borkowski <mbork@mbork.pl> writes:

> Is there a way to get the "state" of the change group to only cancel
> it if it was not finished?

I think yes, it's called `atomic-change-group' - see how that macro is
implemented.

Michael.