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From: Marcin Borkowski <mbork@mbork.pl>
To: Michael Heerdegen <michael_heerdegen@web.de>
Cc: help-gnu-emacs@gnu.org
Subject: Re: How to temporarily show an image in an Emacs buffer?
Date: Sun, 12 Mar 2023 08:46:38 +0100	[thread overview]
Message-ID: <87356a4dk1.fsf@mbork.pl> (raw)
In-Reply-To: <87zg8i4p3l.fsf@web.de>


On 2023-03-12, at 04:37, Michael Heerdegen <michael_heerdegen@web.de> wrote:

> Marcin Borkowski <mbork@mbork.pl> writes:
>
>> I didn't experiment with this, but I'm afraid that interlacing changes
>> to the buffer done by the user (when recording undo changes) and by the
>> Elisp code (while `buffer-undo-list' is bound to `t') may result in
>> undoing being impossible.
>
> Yes, what is allowed is very limited.  AFAIU anything changing any
> positions is already very bad (undo positions are numbers, not markers).

Thanks, that confirms my reservations, and shows that overlays are the
way to go.

Best,

-- 
Marcin Borkowski
http://mbork.pl



  reply	other threads:[~2023-03-12  7:46 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-08  4:53 How to temporarily show an image in an Emacs buffer? Marcin Borkowski
2023-03-08  5:23 ` Marcin Borkowski
2023-03-08  6:19   ` Ruijie Yu via Users list for the GNU Emacs text editor
2023-03-08 16:01     ` Marcin Borkowski
2023-03-08 16:41   ` Michael Heerdegen
2023-03-11  8:14     ` Marcin Borkowski
2023-03-12  3:37       ` Michael Heerdegen
2023-03-12  7:46         ` Marcin Borkowski [this message]
2023-03-08 13:38 ` Eli Zaretskii
2023-03-08 16:00   ` Marcin Borkowski
2023-03-13  8:29     ` Jean Louis
2023-03-13  9:27       ` Marcin Borkowski
2023-04-01 15:57       ` Marcin Borkowski
2023-03-10 16:26 ` Stefan Monnier via Users list for the GNU Emacs text editor
2023-03-11  8:15   ` Marcin Borkowski

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