From: "Mattias Engdegård" <mattiase@acm.org>
To: Alan Mackenzie <acm@muc.de>
Cc: Lars Ingebrigtsen <larsi@gnus.org>, 25706@debbugs.gnu.org
Subject: bug#25706: 26.0.50; Slow C file fontification
Date: Thu, 3 Dec 2020 15:03:27 +0100 [thread overview]
Message-ID: <BFB6C808-847B-458D-B077-D69B2AFA8007@acm.org> (raw)
In-Reply-To: <X8jCdwtyCY6F2Y6E@ACM>
3 dec. 2020 kl. 11.48 skrev Alan Mackenzie <acm@muc.de>:
> I've found it. There was a "harmless" c-backward-syntactic-ws invocation
> in c-determine-limit. This macro moves back over syntactic whitespace,
> which includes macros. So this was going back all the way to BOB, from
> which we scanned forward again.
Not bad. Now Emacs starts becoming usable for real code!
I can confirm a big subjective improvement on several big preprocessor-heavy files, and measurements agree.
> It now takes me just under 6 minutes to (time-scroll) through the entire
> buffer, compared with a previous hour. As already mentioned, it is still
> slightly more sluggish near the end of the buffer than near the start.
Is that with or without my regexp patch?
It looks like there may be more regexp improvements possible. We can take a closer look later on, when the running time is less dominated by other issues.
next prev parent reply other threads:[~2020-12-03 14:03 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-13 18:20 bug#25706: 26.0.50; Slow C file fontification Sujith
2020-11-30 11:26 ` Lars Ingebrigtsen
2020-11-30 11:37 ` Lars Ingebrigtsen
2020-11-30 12:46 ` Mattias Engdegård
2020-11-30 12:49 ` Lars Ingebrigtsen
2020-11-30 16:27 ` Eli Zaretskii
2020-11-30 16:38 ` Alan Mackenzie
2020-11-30 16:53 ` Mattias Engdegård
2020-11-30 17:04 ` Mattias Engdegård
2020-12-01 5:48 ` Ravine Var
2020-12-01 13:34 ` Mattias Engdegård
2020-12-01 9:29 ` Alan Mackenzie
2020-12-01 9:44 ` martin rudalics
2020-12-01 10:07 ` Alan Mackenzie
2020-12-01 9:21 ` Alan Mackenzie
2020-12-01 12:03 ` Mattias Engdegård
2020-12-01 12:57 ` Alan Mackenzie
2020-12-01 14:07 ` Mattias Engdegård
2020-12-01 15:27 ` Alan Mackenzie
2020-12-01 18:59 ` Mattias Engdegård
2020-12-02 10:15 ` Alan Mackenzie
[not found] ` <X8dpQeGaDD1w3kXX@ACM>
2020-12-02 15:06 ` Mattias Engdegård
2020-12-03 10:48 ` Alan Mackenzie
2020-12-03 14:03 ` Mattias Engdegård [this message]
2020-12-04 21:04 ` Alan Mackenzie
[not found] ` <X8qkcokfZGbaK5A2@ACM>
2020-12-05 15:20 ` Mattias Engdegård
2020-12-08 18:42 ` Alan Mackenzie
[not found] ` <X8/JG7eD7SfkEimH@ACM>
2020-12-08 19:32 ` Mattias Engdegård
2020-12-09 7:31 ` Ravine Var
2020-12-09 7:47 ` Ravine Var
2020-12-10 8:08 ` Alan Mackenzie
2020-12-09 18:46 ` Alan Mackenzie
[not found] ` <X9Ebn7hKnG/vpDcZ@ACM>
2020-12-09 20:04 ` Eli Zaretskii
2020-12-09 20:32 ` Alan Mackenzie
2020-12-10 17:02 ` Ravine Var
2020-12-10 20:02 ` Alan Mackenzie
2020-12-11 10:55 ` Ravine Var
2020-12-12 15:34 ` Alan Mackenzie
[not found] ` <X9TjCeydJaE2mpK8@ACM>
2020-12-14 7:20 ` Ravine Var
2020-12-14 11:44 ` Alan Mackenzie
2020-12-15 4:01 ` Ravine Var
2020-12-15 12:27 ` Alan Mackenzie
2020-12-09 17:00 ` Mattias Engdegård
2020-12-10 12:26 ` Alan Mackenzie
2020-11-30 18:30 ` Alan Mackenzie
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