bug#70386: 30.0.50; (recenter 0 t) does not put point on top of the window

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@posteo.net>
> Date: Sun, 14 Apr 2024 16:33:48 +0000
> 
> Consider the following reproducer:
> 
> 1. emacs -Q
> 2. Insert the following into scratch buffer and put point at "recenter"

Which "recenter": the one in the comment or the one in (recenter 0 t) ?

> (progn
>   (require 'pixel-scroll)
>   (pixel-scroll-precision-interpolate
>    (* -1 (line-pixel-height)
>       (max 0 (- (count-screen-lines (window-start) (point)) 2)))
>    nil 1)
>   ;; Call original recenter for final adjustment.
>   (recenter 0 t))
> 
> 3. M-x eval-buffer
> 4. Observe that scroll is not set to line 0, despite calling `recenter'

I don't think I understand what you mean by "scroll is not set to line
0".  Please explain in more detail what you expected to happen (and
why), and what did happen.