Problems with scrolling large images.

[Lute Kamstra]

When I display an image in a window and the image is taller than the
window, scrolling down with next-line doesn't work well near the
bottom of the image.  Each C-n scrolls the image a little bit, but the
last C-n (the one just before the C-n that gives an error because the
end of the buffer is reached) has a strange effect.  Instead of
showing the bottom part of the image, Emacs show me the top part of
the image.  Doing a subsequent C-p shows me the bottom part of the
image again.

Lute.


PS.  Some months ago, my Gnus group buffer (a text buffer) behaved
     similarly, but I can't reproduce that anymore.