Re: The unwarranted scrolling assumption

[Eli Zaretskii]

> From: Lennart Borgman <address@hidden>
> Date: Fri, 18 Jun 2010 19:31:30 +0200
> Cc: address@hidden
> 
> +  if ((w->current_matrix->begv != b->begv) || (w->current_matrix->zv != 
> b->zv))
> +    b->clip_changed = 1;

You cannot safely use w->current_matrix if w->window_end_valid is nil.

And if you add that test, you will end up with exactly the same code
that was there originally.

IOW, we still need to find out why reconsider_clip_changes fails to
reset the clip_changed flag.