GNU bug report logs - #70386
30.0.50; (recenter 0 t) does not put point on top of the window

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Message #92 received at 70386 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Ihor Radchenko <yantar92 <at> posteo.net>
Cc: luangruo <at> yahoo.com, 70386 <at> debbugs.gnu.org
Subject: Re: bug#70386: 30.0.50; (recenter 0 t) does not put point on top of
 the window
Date: Sun, 12 May 2024 12:19:40 +0300

> From: Ihor Radchenko <yantar92 <at> posteo.net>
> Cc: luangruo <at> yahoo.com, 70386 <at> debbugs.gnu.org
> Date: Sun, 12 May 2024 07:19:51 +0000
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> > It is still very much unpredictable: sometimes shows the last line at
> > the window's top, sometimes doesn't.
> 
> Let's try a slightly different recipe:
> 
> 1. emacs -Q
> 2. Insert
> (progn
>   (require 'pixel-scroll)
>   (pixel-scroll-precision-interpolate
>    (* -1 (line-pixel-height)) nil 1)
>   (recenter 0 t))
> 3. Move point to "progn"
> 4. M-x eval-buffer

Still unpredictable.  Sometimes point ends up on progn with
window-start being 1 as at the beginning, sometimes I see the
"recenter" line at the top line with point at EOB (i.e. below that
line).

Why do you think some minor modifications of the recipe should affect
the results?

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