Re: 'struct window' cleanup #2

[Eli Zaretskii]

> Date: Tue, 26 Jun 2012 13:06:52 +0400
> From: Dmitry Antipov <address@hidden>
> Cc: Stefan Monnier <address@hidden>,
>       Emacs development discussions <address@hidden>
> 
> On 06/26/2012 11:26 AM, martin rudalics wrote:
> 
> > Indeed.  Looks like a hack to detect whether the window still shows the
> > same buffer.  Anyway, window_end_pos and window_end_vpos are the more
> > promising candidates (if Eli agrees).  Can you see whether the part
> >
> >        /* When splitting windows or for new windows, it happens that
> >       redisplay is called with a nil window_end_vpos or one being
> >       larger than the window.  This should really be fixed in
> >       window.c.  I don't have this on my list, now, so we do
> >       approximately the same as the old redisplay code.  --gerd.  */
> >        && INTEGERP (w->window_end_vpos)
> >
> > in xdisp.c still makes sense?  IIUC window_end_vpos is always an
> > integer.
> 
> Hmmm... I'll try, although xdisp.c looks like a nightmare
> and I haven't yet tried to understand how it works :-).

I'm hacking xdisp.c intensively for 3 years, and I still get surprised
from time to time.