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 #1414 received at 56682 <at> debbugs.gnu.org (full text, mbox):

From: Gregory Heytings <gregory <at> heytings.org>
To: Dmitry Gutov <dgutov <at> yandex.ru>
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: Sun, 14 Aug 2022 17:54:03 +0000

[Message part 1 (text/plain, inline)]
>> If the conclusion is, after some reasonable effort, that there is no 
>> way to make syntax-ppss significantly faster in one way or another in 
>> such cases, and that there is no way to make font locking reasonably 
>> accurate even when it doesn't have access to the whole buffer, it might 
>> make sense to provide user options to fine-tune the behavior.  But we 
>> are not there yet.
>
> Both conclusions lead to removing the applications of narrowing from 
> handle_fontified_prop.
>

I have seen no effort whatsoever to make syntax-ppss significantly faster 
in one way or another.
This bug report was last modified 2 years and 8 days ago.

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