From: Eli Zaretskii <eliz@gnu.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: rudalics@gmx.at, dancol@dancol.org, emacs-devel@gnu.org
Subject: Re: Can we make set_point_both less expensive?
Date: Mon, 23 Mar 2015 17:31:40 +0200 [thread overview]
Message-ID: <834mpbspb7.fsf@gnu.org> (raw)
In-Reply-To: <jwvvbhssnf3.fsf-monnier+emacs@gnu.org>
> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: rudalics@gmx.at, dancol@dancol.org, emacs-devel@gnu.org
> Date: Sun, 22 Mar 2015 18:23:24 -0400
>
> >> It's right after an incomplete redisplay, and right before the
> >> next redisplay. I count this as still "before redisplay" since it's
> >> immediately followed by redisplay.
> > It is "during redisplay" in the sense that the position of cursor was
> > not yet finalized, and you already move it, perhaps for no good
> > reason.
>
> I don't deny it can be described differently. I.e. sometimes it
> happens during redisplay, sometimes it happens in a sit-for, sometimes
> it happens at the end of a command. But always it happens right
> before a redisplay.
I don't understand what you are trying to say. Every single moment in
Emacs is before _some_ redisplay, that's true, but I don't believe you
meant that.
Otherwise, running the function before redisplay finished its job and
returned after marking the window up-to-day is bound to catch
incorrect position of point/cursor sometimes.
> > Ah, I misunderstood your question. The answer for your question is
> > "abort redisplay cycle after moving point out of intangible".
>
> In which case you risk inf-looping (and hence need to detect/prevent
> it), same as with pre-redisplay-function.
No, because the code to abort redisplay was written long ago and is
well tested, by time if nothing else.
next prev parent reply other threads:[~2015-03-23 15:31 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-15 19:53 Can we make set_point_both less expensive? Daniel Colascione
2015-03-16 3:02 ` Stefan Monnier
2015-03-16 3:32 ` Daniel Colascione
2015-03-16 12:49 ` Stefan Monnier
2015-03-16 16:24 ` Eli Zaretskii
2015-03-16 17:42 ` Stefan Monnier
2015-03-16 18:03 ` Artur Malabarba
2015-03-16 3:48 ` Eli Zaretskii
2015-03-16 12:47 ` Stefan Monnier
2015-03-16 16:23 ` Eli Zaretskii
2015-03-16 17:36 ` Stefan Monnier
2015-03-16 18:05 ` Eli Zaretskii
2015-03-16 18:18 ` Daniel Colascione
2015-03-16 18:27 ` Eli Zaretskii
2015-03-16 18:31 ` Daniel Colascione
2015-03-16 19:42 ` Eli Zaretskii
2015-03-16 20:43 ` Daniel Colascione
2015-03-16 20:48 ` Lennart Borgman
2015-03-16 20:53 ` Daniel Colascione
2015-03-16 22:00 ` Stefan Monnier
2015-03-17 7:08 ` Eli Zaretskii
[not found] ` <<5507408D.1040104@dancol.org>
[not found] ` <<83h9tkyucg.fsf@gnu.org>
2015-03-17 15:11 ` Drew Adams
2015-03-16 18:57 ` Stefan Monnier
2015-03-17 10:25 ` martin rudalics
2015-03-17 15:38 ` Stefan Monnier
2015-03-17 19:27 ` martin rudalics
2015-03-17 21:37 ` Stefan Monnier
2015-03-18 7:36 ` martin rudalics
2015-03-18 12:55 ` Stefan Monnier
2015-03-18 19:05 ` martin rudalics
2015-03-18 19:24 ` Stefan Monnier
2015-03-19 7:51 ` martin rudalics
2015-03-19 13:41 ` Stefan Monnier
2015-03-20 8:08 ` martin rudalics
2015-03-20 14:14 ` Stefan Monnier
2015-03-20 14:20 ` Lennart Borgman
2015-03-20 14:32 ` Eli Zaretskii
2015-03-20 14:48 ` martin rudalics
2015-03-20 15:08 ` Eli Zaretskii
2015-03-20 17:57 ` Stefan Monnier
2015-03-20 20:52 ` Eli Zaretskii
2015-03-20 21:50 ` Stefan Monnier
2015-03-21 7:32 ` Eli Zaretskii
2015-03-21 9:58 ` martin rudalics
2015-03-21 10:43 ` Eli Zaretskii
2015-03-21 12:30 ` martin rudalics
2015-03-21 12:45 ` Eli Zaretskii
2015-03-20 19:53 ` martin rudalics
2015-03-20 21:19 ` Eli Zaretskii
2015-03-20 21:53 ` Stefan Monnier
2015-03-21 7:38 ` Eli Zaretskii
2015-03-21 9:59 ` martin rudalics
2015-03-21 10:46 ` Eli Zaretskii
2015-03-21 10:56 ` Eli Zaretskii
2015-03-21 12:31 ` martin rudalics
2015-03-21 14:03 ` Stefan Monnier
2015-03-21 14:44 ` Eli Zaretskii
2015-03-21 17:28 ` Stefan Monnier
2015-03-21 18:28 ` Eli Zaretskii
2015-03-21 22:14 ` Stefan Monnier
2015-03-22 14:11 ` martin rudalics
2015-03-22 22:25 ` Stefan Monnier
2015-03-21 13:59 ` Stefan Monnier
2015-03-21 14:35 ` Stefan Monnier
2015-03-21 14:47 ` Eli Zaretskii
2015-03-21 17:10 ` Stefan Monnier
2015-03-21 17:14 ` Eli Zaretskii
2015-03-21 22:12 ` Stefan Monnier
2015-03-22 3:34 ` Eli Zaretskii
2015-03-22 13:58 ` Stefan Monnier
2015-03-22 17:41 ` Eli Zaretskii
2015-03-22 22:23 ` Stefan Monnier
2015-03-23 15:31 ` Eli Zaretskii [this message]
2015-03-23 19:27 ` Stefan Monnier
2015-03-23 19:28 ` Stefan Monnier
2015-03-23 19:39 ` Eli Zaretskii
2015-03-23 21:37 ` Stefan Monnier
2015-03-21 14:42 ` Eli Zaretskii
2015-03-21 9:58 ` martin rudalics
2015-03-21 14:10 ` Stefan Monnier
2015-03-21 9:58 ` martin rudalics
2015-03-21 10:42 ` Eli Zaretskii
2015-03-21 12:30 ` martin rudalics
2015-03-21 12:45 ` Eli Zaretskii
2015-03-20 17:59 ` Stefan Monnier
2015-03-20 19:53 ` martin rudalics
2015-03-17 14:29 ` Richard Stallman
2015-03-17 15:15 ` Yuri Khan
2015-03-17 15:33 ` Eli Zaretskii
2015-03-18 12:00 ` Richard Stallman
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