GNU bug report logs - #15555
24.3; Bidirectional display very slow with long lines

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Package: emacs;

Reported by: Jerome L Quinn <jlquinn <at> us.ibm.com>

Date: Mon, 7 Oct 2013 20:25:01 UTC

Severity: normal

Merged with 3219, 4123, 9589, 13675, 18530, 22143, 24523, 30457, 32523, 40007

Found in versions 23.1, 24.2, 24.2.93, 24.3, 24.5, 26.0.91, 27.0.50, 28.0.50

Fixed in version 29.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Dmitry Antipov <dmantipov <at> yandex.ru>
Cc: 15555 <at> debbugs.gnu.org, monnier <at> iro.umontreal.ca
Subject: bug#15555: Re: bug#15555: 24.3; Bidirectional display very slow with long lines
Date: Thu, 20 Feb 2014 19:44:17 +0200

> Date: Tue, 18 Feb 2014 18:31:22 +0400
> From: Dmitry Antipov <dmantipov <at> yandex.ru>
> Cc: 15555 <at> debbugs.gnu.org
> 
> Now I'm seeing the use case where each trivial cursor movement causes
> ~100 calls to bidi_shelve_cache, and each call copies ~1.5M of data.

Starting with revision 116494, bidi_shelve_cache should be called much
less, normally just once and sometimes twice per call to
move_it_in_display_line_to.

This doesn't solve the original bug, so the cursor will occasionally
still get stuck in that 4000.txt file, but at least it will do that
with much less noise.
This bug report was last modified 2 years and 305 days ago.

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