bug#52231: 29.0.50; pixel-scroll-precision-mode conflicts with scroll-margin

[Yuan Fu]

> Please try now to see if the issue has been resolved, thanks.

I tried and it now works beautifully, thanks!

However, scroll-margin seems to still mess up scrolling when there are images. 
You don’t even need images taller than the window height. When there are some 
images in the window, scrolling either doesn’t take any effect (beginning of 
the video), or jerks around but doesn’t scroll down (end of the video).

Admittedly this is not a pixel-scroll-precision-mode problem: Emacs without it 
doesn’t scroll either. I suppose it is because there are too few lines in the 
window (because of images) that a scroll margin of 4 breaks scrolling. Maybe I 
should file a separate report?

pixel-scroll-image.mp4
Description: video/mp4

Thanks,
Yuan