GNU bug report logs - #25706
26.0.50; Slow C file fontification

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Packages: cc-mode, emacs;

Reported by: Sujith <m.sujith <at> gmail.com>

Date: Mon, 13 Feb 2017 18:41:01 UTC

Severity: normal

Tags: moreinfo

Found in version 26.0.50

Done: Alan Mackenzie <acm <at> muc.de>

Bug is archived. No further changes may be made.

Full log

Message #35 received at 25706 <at> debbugs.gnu.org (full text, mbox):

From: Mattias Engdegård <mattiase <at> acm.org>
To: Alan Mackenzie <acm <at> muc.de>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 25706 <at> debbugs.gnu.org
Subject: Re: bug#25706: 26.0.50; Slow C file fontification
Date: Mon, 30 Nov 2020 18:04:56 +0100

[Message part 1 (text/plain, inline)]
> Actually, it's the underscores!

Found it. Suggested fix attached.

It can be improved: at least one pair of regexp group brackets can be removed, but I didn't dare doing so because I wasn't sure if it would throw some group numbers off by one.

Alan, please, let's work together and remove unnecessary capture groups from the regexps! Even XEmacs regexps support non-capturing brackets, \(?:...\), and they save time, regexp stack space, and reduce the hassle of computing the 'regexp depth' everywhere.


[cc-underscores.diff (application/octet-stream, attachment)]
This bug report was last modified 4 years and 213 days ago.

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