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

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From: Mattias Engdegård <mattias.engdegard <at> gmail.com>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 72830 <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>, Juri Linkov <juri <at> linkov.net>
Subject: bug#72830: Big rectangular selections are slow
Date: Thu, 29 Aug 2024 12:22:08 +0200

[Message part 1 (text/plain, inline)]

29 aug. 2024 kl. 05.56 skrev Michael Heerdegen <michael_heerdegen <at> web.de>:

> My idea would be: highlight from or up to "rectangle point" maximally
> (window-height) lines.

Here I was digging into the redisplay code in the hope of finding an obscure hook to subvert, and you turn up and give us the obvious, simple and correct solution right away. Thank you, Michael!

The patch below is crude but seems to work. Please give it a try.
If the original recipe is still stuttering, try setting `select-active-regions` to nil.

[rect-highlight.diff (application/octet-stream, attachment)]

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