Re: Redisplay resets vscroll when window start changes

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Tue, 16 Nov 2021 21:38:57 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > If you are moving to another line, how would it make sense to leave
> > vscroll alone?  Or what am I missing?
> 
> Basically, if someone has the following content in a window:
> 
> AAAA
> BBBB
> CCCC
> DDDD
> EEEE
> FFFF
> GGGG
> HHHH
> 
> And point is on the first "G", while vscroll is set so that part of
> "AAAA" is obscured, he will expect moving up so that point is on the
> first "F" to not reset the vscroll.

Moving up pixelwise? that should gradually show more and more of AAAA
with each pixel movement.  How is vscroll involved here?

Or are you talking about some other kind of "moving up?