GNU bug report logs - #16526
24.3.50; scroll-conservatively & c-mode regression

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Packages: emacs, cc-mode;

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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Message #273 received at 16526 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Alan Mackenzie <acm <at> muc.de>
Cc: 16526 <at> debbugs.gnu.org
Subject: Re: bug#16526: 24.3.50; scroll-conservatively & c-mode regression
Date: Sat, 05 Jul 2014 19:06:15 -0400

> from point-min.  When I optimised c-parse-state a few years back, I was
> under the impression that a backwards scan-lists wasn't much more
> expensive than a forwards one.  Often, this is not true.

Indeed.  Programming language syntax is designed to be parsed forward,
so parsing it backward can sometimes be surprisingly difficult.

> about adjusting c-parse-state again.  It surely wouldn't hurt for the
> documentation of open-paren-etc and scan-lists to be a bit more
> forthcoming about backwards scan-listses and what the variable _really_
> does.

I think open-paren-in-column-0-is-defun-start is on the way out, FWIW.
`syntax-ppss' makes is largely irrelevant.


        Stefan
This bug report was last modified 11 years and 16 days ago.

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