Re: The unwarranted scrolling assumption

[Eli Zaretskii <eliz@gnu.org>]

> From: Lennart Borgman <lennart.borgman@gmail.com>
> Date: Sat, 19 Jun 2010 19:22:43 +0200
> Cc: cyd@stupidchicken.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org
> 
> On Sat, Jun 19, 2010 at 6:05 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> >> From: Lennart Borgman <lennart.borgman@gmail.com>
> >> Date: Sat, 19 Jun 2010 16:20:58 +0200
> >> Cc: cyd@stupidchicken.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org
> >>
> >> > Please try this patch after reverting yours, and see if the problem
> >> > you were trying to solve is gone.
> >>
> >>
> >> I am sure it does not.
> >
> > Could you please humor me by trying?
> 
> 
> I think misread this as if you tried to solve the original problem
> with this patch. Did you try to solve the original problem or another
> problem?

The problem I tried to solve was the one you reported at the beginning
of this thread: evaluate this:

    (setq scroll-preserve-screen-position 'always
	  scroll-conservatively           most-positive-fixnum
	  scroll-step                     0)

and then visit window.c and press and hold the <down> arrow key.  You
said that sometimes you see display being recentered, i.e. you see the
cursor near the middle of the window, instead of it being at the last
screen line.

David Engster reported the same symptoms with the above settings.
(David also used redisplay-dont-pause set to t, but I don't see
recentering with that customization, either, when I use the current
trunk.)

> What exactly what you want me to test?

I would like you to try the above recipe in "emacs -Q", and tell me if
you still see recentering.

TIA