GNU bug report logs - #44818
Say "Consider switching so-long mode on" when detecting long line files

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Package: emacs;

Reported by: Devon Sean McCullough <Devon2020 <at> jovi.net>

Date: Mon, 23 Nov 2020 12:40:02 UTC

Severity: minor

Merged with 44809

Found in version 27.0.91

Fixed in version 29.1

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

Bug is archived. No further changes may be made.

Full log

Message #63 received at 44818 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: rms <at> gnu.org
Cc: Emacs-hacker2018 <at> jovi.net, 44818 <at> debbugs.gnu.org
Subject: Re: bug#44818: 27.0.91; wedged
Date: Wed, 02 Dec 2020 17:00:03 +0200

> From: Richard Stallman <rms <at> gnu.org>
> Date: Tue, 01 Dec 2020 23:32:05 -0500
> Cc: 44818 <at> debbugs.gnu.org
> 
> I wonder if it is possible to detect that a single line has taken too
> long, and set a flag to truncate long lines in that buffer.
> Perhaps set truncate-lines.

That could be too drastic: Emacs becomes painfully slow long after the
number of characters exceeds 80 or 130 or 250 or any other reasonable
line width.  So setting truncate-lines would hide too much from the
view.

Also, setting truncate-lines does not make Emacs fast in all cases,
when very long lines are involved.
This bug report was last modified 2 years and 301 days ago.

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