From: Eli Zaretskii <eliz@gnu.org>
To: Markus Triska <triska@metalevel.at>
Cc: 34038@debbugs.gnu.org
Subject: bug#34038: 26.1; set-window-start sometimes fails to set window start
Date: Fri, 11 Jan 2019 09:03:55 +0200 [thread overview]
Message-ID: <83sgxzhe04.fsf@gnu.org> (raw)
In-Reply-To: <m2ftu05lqv.fsf@metalevel.at> (message from Markus Triska on Thu, 10 Jan 2019 20:57:28 +0100)
> From: Markus Triska <triska@metalevel.at>
> Date: Thu, 10 Jan 2019 20:57:28 +0100
>
> 1) inserts several (i.e, window-height) lines into the buffer
> 2) sets window point to p, which is point after (1)
> 3) WAITS FOR A KEY PRESS (please press a key at this point)
> 4) erases and restores the buffer contents
> 5) sets window point to p, the same point as in (2)
>
> However, in many invocations (please try it repeatedly if necessary),
> the visible portion of the buffer unexpectedly differs between (3) and
> after the whole procedure.
>
> In other words, when Emacs waits for a key press, a different portion of
> the buffer is visible compared to after you press a key, even though
> window-start is set to the same position in both cases.
>
> Is there a way to reliably set the window-start in such situations?
I think this happens because you call set-window-start with last
argument non-nil. Doing that tells the display engine that the
window-start point is just a suggestion, not a hard requirement.
next prev parent reply other threads:[~2019-01-11 7:03 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 19:57 bug#34038: 26.1; set-window-start sometimes fails to set window start Markus Triska
2019-01-11 7:03 ` Eli Zaretskii [this message]
2019-01-11 12:20 ` Markus Triska
2019-01-11 13:36 ` Eli Zaretskii
2019-01-11 14:31 ` Markus Triska
2019-01-11 15:10 ` martin rudalics
2019-01-11 17:45 ` Markus Triska
2019-01-11 19:07 ` Eli Zaretskii
2019-01-12 8:12 ` martin rudalics
2019-01-12 13:25 ` Markus Triska
2019-01-12 13:53 ` Eli Zaretskii
2019-01-12 14:12 ` martin rudalics
2019-01-12 19:08 ` Markus Triska
2019-01-12 20:28 ` Eli Zaretskii
2019-01-11 21:23 ` Alan Mackenzie
2019-01-12 8:13 ` martin rudalics
2019-01-12 18:22 ` Alan Mackenzie
2019-01-12 20:29 ` Eli Zaretskii
2019-01-12 20:42 ` Alan Mackenzie
2019-01-13 3:30 ` Eli Zaretskii
2019-01-13 7:32 ` Markus Triska
2019-01-13 8:40 ` martin rudalics
2019-01-13 11:32 ` Eli Zaretskii
2019-01-13 13:40 ` martin rudalics
2019-01-13 15:21 ` Eli Zaretskii
2019-03-24 10:35 ` Markus Triska
2019-03-24 17:28 ` Eli Zaretskii
2019-03-24 19:56 ` Markus Triska
2019-03-28 16:21 ` Eli Zaretskii
2019-03-29 7:16 ` Markus Triska
2019-03-29 8:29 ` Eli Zaretskii
2019-04-06 8:23 ` Eli Zaretskii
[not found] <<m2ftu05lqv.fsf@metalevel.at>
[not found] ` <<83sgxzhe04.fsf@gnu.org>
2019-01-11 16:37 ` Drew Adams
2019-01-11 16:49 ` Eli Zaretskii
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