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From: Lars Ingebrigtsen <larsi@gnus.org>
To: Aaron Jensen <aaronjensen@gmail.com>
Cc: 24048@debbugs.gnu.org, Dmitry Gutov <dgutov@yandex.ru>
Subject: bug#24048: 25.0.95; syntax-ppss can be slow
Date: Wed, 01 Dec 2021 20:47:44 +0100	[thread overview]
Message-ID: <87o860f6ov.fsf@gnus.org> (raw)
In-Reply-To: <CAHyO48xKhjqvqNgEy6fTTNyh0yDjAvhf7KtZ9DDNzr9U_J=DKQ@mail.gmail.com> (Aaron Jensen's message of "Fri, 30 Mar 2018 06:09:45 -0700")

Aaron Jensen <aaronjensen@gmail.com> writes:

> Ultimately, it seems like it may be worth reconsidering this condition:
>
> (and old-pos (< (- pos old-pos)
>     ;; The time to use syntax-begin-function and
>     ;; find PPSS is assumed to be about 2 * distance.
>     (* 2 (/ (cdr (aref syntax-ppss-stats 5))
>     (1+ (car (aref syntax-ppss-stats 5)))))))

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

This bit is now:

	(if (and old-pos (< (- pos old-pos)
			    ;; The time to use syntax-begin-function and
			    ;; find PPSS is assumed to be about 2 * distance.
			    (let ((pair (aref syntax-ppss-stats 5)))
			      (/ (* 2 (cdr pair)) (car pair)))))

I.e., the last clause is gone.  I don't know whether this affects the
issue you were seeing, though.  Is syntax-ppss still mis-caching things
for you?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





  reply	other threads:[~2021-12-01 19:47 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-21 14:29 bug#24048: 25.0.95; syntax-ppss can be slow Aaron Jensen
2016-07-25  1:16 ` Dmitry Gutov
2016-07-25  7:12   ` Aaron Jensen
2016-07-25 12:42     ` Dmitry Gutov
2016-07-25 15:08       ` Aaron Jensen
2018-03-30 13:09         ` Aaron Jensen
2021-12-01 19:47           ` Lars Ingebrigtsen [this message]
2021-12-03  2:38             ` Aaron Jensen
2021-12-03 16:26               ` Lars Ingebrigtsen
2021-12-03 17:01 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-12-04  1:31   ` Aaron Jensen
2021-12-04  2:41     ` Lars Ingebrigtsen
2021-12-04 14:40     ` Dmitry Gutov
2021-12-04 16:27       ` Aaron Jensen
2021-12-05  0:13         ` Dmitry Gutov
2021-12-05  5:06           ` Aaron Jensen

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