Re: The unwarranted scrolling assumption

[Eli Zaretskii]

> From: Lennart Borgman <address@hidden>
> Date: Wed, 16 Jun 2010 23:27:33 +0200
> Cc: address@hidden, address@hidden, address@hidden
> 
> > No, it's not just to keep up.  Recentering is the generic redisplay
> > method, used as the last resort if Emacs is unable to be smarter than
> > that.
> 
> Is not that the same thing here?

Sorry, I don't understand.

> >> However I dislike the way the problem is solved. I would rather wish
> >> that the display engine instead calculated a new window start point
> >> from the input command queue. I have no idea if that is actually
> >> possible.
> >
> > I think it's impossible.  How can you guess the effect of list of
> > arbitrary input events on the display, without actually redisplaying?
> 
> In a general case this is impossible, but we know more here.

What do we know here?