GNU bug report logs - #63622
lisp/progmodes/python.el: performance regression introduced by multiline font-lock

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Message #44 received at 63622 <at> debbugs.gnu.org (full text, mbox):

From: Ruijie Yu <ruijie <at> netyu.xyz>
To: kobarity <kobarity <at> gmail.com>
Cc: Tom Gillespie <tgbugs <at> gmail.com>, Eli Zaretskii <eliz <at> gnu.org>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>, 63622 <at> debbugs.gnu.org
Subject: Re: bug#63622: lisp/progmodes/python.el: performance regression
 introduced by multiline font-lock
Date: Wed, 24 May 2023 07:41:52 +0800

On May 23, 2023, at 23:46, kobarity <kobarity <at> gmail.com> wrote:
> 
> The performance problem in the example shown by Tom can be resolved by
> modifying the above code as follows:
> 
>          (re (concat "[uU]?[rR]?"
>                      (rx (or "\"\"\"" "\"" "'''" "'")))))

I didn’t read the context for this snippet, but isn’t it sufficient to match for only one single-quote and double-quote, instead of also matching for the triple (multiline) counterparts? 

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