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

Previous Next

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

View this message in rfc822 format

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: bug#25706: 26.0.50; Slow C file fontification
Date: Tue, 1 Dec 2020 15:07:02 +0100

1 dec. 2020 kl. 13.57 skrev Alan Mackenzie <acm <at> muc.de>:

> Just something I threw together a few years ago, and use regularly on
> xdisp.c to check nothing's gone seriously slow/see how well my latest
> optimisation has worked.

Thank you, good, I just wanted to know that we are measuring the same thing!

> How much time does this regexp change save on a "normal" file, such as
> src/xdisp.c?

Not much, but clearly measurable -- about 1.5 % (scrolling benchmark).

What can be done for big files that mainly consist of preprocessor definitions?
This bug report was last modified 4 years and 213 days ago.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.