GNU bug report logs - #56682
Fix the long lines font locking related slowdowns

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Package: emacs;

Reported by: Gregory Heytings <gregory <at> heytings.org>

Date: Thu, 21 Jul 2022 18:01:01 UTC

Severity: normal

Done: Gregory Heytings <gregory <at> heytings.org>

Bug is archived. No further changes may be made.

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Message #200 received at 56682 <at> debbugs.gnu.org (full text, mbox):

From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: Gregory Heytings <gregory <at> heytings.org>
Cc: 56682 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>,
 monnier <at> iro.umontreal.ca
Subject: Re: bug#56682: Fix the long lines font locking related slowdowns
Date: Tue, 26 Jul 2022 09:08:52 +0200

Gerd Möllmann <gerd.moellmann <at> gmail.com> writes:

> Gregory Heytings <gregory <at> heytings.org> writes:
>
>> Hmmm...  After 350e97d78e, Isearch locks Emacs with
>> toggle-truncate-lines. Recipe:
>>
>> C-x C-f long-line.xml
>> C-x x t
>> C-s </
>>
>> You have to kill Emacs, C-g does not work.
>
> That's kind of funny :-):
>
> (setq isearch-lazy-highlight nil)

I eventually finishes, sort of.  The many '<' in the XML lead to a stop
every few characters for drawing highlights.  Like a train that stops at
every trash can along the tracks.  That's more stops than with
font-lock.
This bug report was last modified 2 years and 8 days ago.

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