Re: Redisplay resets vscroll when window start changes

[Stefan Monnier]

>> I'm still not sure how/why line-move should affect vscroll.
> Because it needs to handle the case of scrolling through a very tall
> image.
[...]
>> Would there be a way to distinguish the case where line-move can return
>> a correct result without changing vscroll, from the case where it does
>> require changing vscroll in order to find its answer?
> I don't think I understand the question.

The question can be rephrased as: could `line-move` only reset vscroll
in the case where we're scrolling through a very tall image?


        Stefan