bug#46320: 27.1; bugs about scrolling buffer with images

[Lars Ingebrigtsen]

ynyaaa@gmail.com writes:

> In this report, font size is important.
> If font size differs, window size or image size should be changed.
> But I can not find the relations.
> The cases below are tested with emacs -Q.
> In my environment, the font used by 'emacs -Q' is 
> harfbuzz:-outline-Courier New-normal-normal-normal-mono-13-*-*-*-c-*-iso8859-1
> and (frame-char-height) => 16.

I don't have this font installed...

[...]

> (2)unable to scroll up
> Evaluate the form below and type C-v repeatedly, the buffer never scroll
> up to the end of the buffer. Once in three times, the buffer scrolls
> down and the line 2 is displayed at the top of the window.

... and I'm unable to reproduce this problem (on Emacs 27.1 and Emacs
28), but I think there's a good chance that this has also been fixed by
Eli's fixes in this area.  Would it be possible for you to test this in
Emacs 28?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no