GNU bug report logs - #12867
24.3.50; easy-to-repro crash involving mode line

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Package: emacs;

Reported by: "Drew Adams" <drew.adams <at> oracle.com>

Date: Mon, 12 Nov 2012 03:53:01 UTC

Severity: normal

Found in version 24.3.50

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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From: martin rudalics <rudalics <at> gmx.at>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 12867 <at> debbugs.gnu.org
Subject: bug#12867: 24.3.50; easy-to-repro crash involving mode line
Date: Tue, 13 Nov 2012 09:22:20 +0100

> FWIW, I recently added such a cache (in Elisp) to nlinum.el, and on my
> test case (largish file with C-v/M-v style scrolling) the difference was
> very significant (but the previous code had no cache at all, not even
> base_line_pos).

So we now already have a syntax-ppss cache and a nlinum cache.  Couldn't
we maintain one cache per buffer, updated by one and the same algorithm?
That algorithm would parse syntax when requested, for example, by
font-locking.  Newlines would be always parsed.  Cache invalidation
would happen as present.

martin
This bug report was last modified 12 years and 242 days ago.

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