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From: | dalanicolai |
Subject: | Re: Question about weird vscroll behavior |
Date: | Sun, 5 Nov 2023 17:36:26 +0100 |
M-: (window-vscroll nil t)
> From: dalanicolai <dalanicolai@gmail.com>
> Date: Sun, 5 Nov 2023 16:49:04 +0100
>
> It works when I simply load my Emacs configuration, but for some
> reason it does not work when I start from emacs -Q.
>
> Although I guess vscroll should be working on lines smaller than the
> screen, just for testing I now display 3 'spaces' and then try to set
> vscroll as follows:
>
> (progn
> (pop-to-buffer "example")
> (dotimes (i 3)
> (let ((o (make-overlay (point)
> (progn (insert " ")
> (point)))))
> (insert "\n")
> (overlay-put o 'display `(space . (:width (600) :height (800))))
> (overlay-put o 'face (list :background (pcase (% i 3)
> (0 "red")
> (1 "green")
> (2 "blue"))))))
> (goto-char (point-min))
>
> (set-window-vscroll nil 300 t))
>
> I have tested it on Emacs 29.1 and 28.3.
>
> I wonder if this is a bug, or if I am missing something. Could you
> please evaluate the above code starting from emacs -Q, and confirm
> this is a bug (or tell me what I am missing)?
Works for me in "emacs -Q".
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