GNU bug report logs - #40007
28.0.50; Emacs gets very slow when displaying a long line

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Package: emacs;

Reported by: Jan Synacek <jsynacek <at> redhat.com>

Date: Tue, 10 Mar 2020 09:49:02 UTC

Severity: normal

Merged with 3219, 4123, 9589, 13675, 15555, 18530, 22143, 24523, 30457, 32523

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: Pieter van Oostrum <pieter-l <at> vanoostrum.org>
To: Jan Synacek <jsynacek <at> redhat.com>
Cc: 40007 <at> debbugs.gnu.org
Subject: bug#40007: 28.0.50; Emacs gets very slow when displaying a long line
Date: Tue, 10 Mar 2020 11:46:22 +0100

Jan Synacek <jsynacek <at> redhat.com> writes:

> 1) emacs -Q
> 2) M-x shell
> 3) execute a program that displays a single line, about ~193000
> characters long
>
> I accidentaly wrote a scheme program that dumped an entire file as a
> single line, about 193k characters long, into the shell buffer. Emacs'
> reponse latency becomes *very* slow, especially when navigating the
> point over the long line.
>
Use so-long-mode.
-- 
Pieter van Oostrum
www: http://pieter.vanoostrum.org/
PGP key: [8DAE142BE17999C4]
This bug report was last modified 2 years and 299 days ago.

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