GNU bug report logs -
#16526
24.3.50; scroll-conservatively & c-mode regression
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Reported by: martin rudalics <rudalics <at> gmx.at>
Date: Thu, 23 Jan 2014 08:54:02 UTC
Severity: important
Found in version 24.3.50
Done: Eli Zaretskii <eliz <at> gnu.org>
Bug is archived. No further changes may be made.
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Your bug report
#16526: 24.3.50; scroll-conservatively & c-mode regression
which was filed against the emacs,cc-mode package, has been closed.
The explanation is attached below, along with your original report.
If you require more details, please reply to 16526 <at> debbugs.gnu.org.
--
16526: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16526
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems
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> Date: Thu, 06 Feb 2014 08:01:32 +0200
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: rudalics <at> gmx.at, 16526 <at> debbugs.gnu.org
>
> > Date: Wed, 5 Feb 2014 23:00:01 +0000
> > Cc: rudalics <at> gmx.at, 16526 <at> debbugs.gnu.org
> > From: Alan Mackenzie <acm <at> muc.de>
> >
> > > Do you need help in identifying what takes 11 sec in the unoptimized
> > > build to traverse a few lines?
> >
> > Thanks for the offer. I really need to get down and spend a few hours
> > investigating. I've elp'd CC Mode, and tried M-> (2 seconds) followed
> > by <PgUp> (13 seconds), and it looks like
> > c-append-lower-brace-pair-to-state-cache is taking up the time. It
> > seems it is being called too often. Maybe.
> >
> > Maybe I'll pin it down at the weekend.
>
> Thanks.
I hope Alan did something with this issue, or will in some near
future.
But either way, the original bug was fixed, so I'm closing this.
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With current trunk and emacs -Q evaluating the following form takes more
than two minutes here with builds on Windows and GNU/Linux:
(progn
(setq scroll-conservatively 101)
(find-file (concat source-directory "src/xdisp.c"))
(end-of-buffer)
(sit-for 3)
(beginning-of-buffer))
It used to take about 10 seconds before revision 116070.
martin
This bug report was last modified 11 years and 17 days ago.
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