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From: martin rudalics <rudalics@gmx.at>
To: Markus Triska <triska@metalevel.at>, Eli Zaretskii <eliz@gnu.org>
Cc: 34038@debbugs.gnu.org
Subject: bug#34038: 26.1; set-window-start sometimes fails to set window start
Date: Fri, 11 Jan 2019 16:10:45 +0100	[thread overview]
Message-ID: <5C38B1F5.7040205@gmx.at> (raw)
In-Reply-To: <8736pz8dus.fsf@metalevel.at>

 > I agree. However, that is not what I was requesting. What I need for my
 > use case is to reliably restore a configuration that I know is possible
 > to display on the grounds that it has already been displayed before. Is
 > there any way to do this, or could this please be provided?

 From you snippet I guess the following should do that.

     (progn
       (goto-char (point-max))
       (insert "\n")
       (dotimes (x (window-height))
         (insert (format "%s\n" x)))
       (redisplay)
       (let ((scroll-margin 1)
	    (b (buffer-string))
	    (s (window-start))
	    (p (point)))
         (read-key "Please press a key to continue.")
         (erase-buffer)
         (insert b)
         (set-window-point nil p)
         (set-window-start nil s)))

The crucial idiom is provided by the last two forms.  Restore window's
point first and then its start position (although any order should do
in your case).

martin





  reply	other threads:[~2019-01-11 15:10 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
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 [this message]
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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