bug#47093: 27.1; deleted image remains displayed

[Eli Zaretskii]

> From: ynyaaa@gmail.com
> Date: Fri, 12 Mar 2021 19:15:04 +0900
> 
> Evaluate the form below, the deleted image remains displayed partially
> in the window.
> In my environment, (window-pixel-height)=>560, (frame-char-height)=>16.
> 
> The attached image is the screenshot of the result.
> 
> (let* ((buf (generate-new-buffer "tmp"))
>        (w 512)
>        (h 512)
>        (pbm (concat (format "P4\n%d %d\n" w h)
>                     (make-string (* (/ w 8) h) ?U))))
>   (switch-to-buffer buf)
>   (dotimes (i 50)
>     (insert-char ?X i)
>     (insert ?\n))
>   (goto-char (point-min))
>   (redisplay t)
>   (insert-image (create-image pbm 'pbm t :scale 1))
>   (redisplay t)
>   (delete-char -1))

Thanks, this is now fixed on the master branch.