GNU bug report logs - #72830
Big rectangular selections are slow

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Package: emacs;

Reported by: Mattias Engdegård <mattias.engdegard <at> gmail.com>

Date: Tue, 27 Aug 2024 12:41:02 UTC

Severity: normal

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Mattias Engdegård <mattias.engdegard <at> gmail.com>
Cc: 72830 <at> debbugs.gnu.org, monnier <at> iro.umontreal.ca, juri <at> linkov.net
Subject: bug#72830: Big rectangular selections are slow
Date: Tue, 27 Aug 2024 16:48:54 +0300

> Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, Juri Linkov <juri <at> linkov.net>
> From: Mattias Engdegård <mattias.engdegard <at> gmail.com>
> Date: Tue, 27 Aug 2024 14:39:37 +0200
> 
> It's a bit surprising (to me) how expensive move-to-column is. The text is all-ASCII without any complications (no long lines, properties, etc).

Does turning off auto-composition-mode help in any way?

Also, since highlighting is AFAIR implemented as overlays, it slows
down check_display_width, which I think would otherwise have moved
very fast if you say there are no properties and no overlays.
This bug report was last modified 267 days ago.

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