Re: Redisplay problems?

[Eli Zaretskii]

> From: Stefan <address@hidden>
> Cc: address@hidden,  address@hidden,  address@hidden,  address@hidden,  
> address@hidden
> Date: Sat, 22 Mar 2014 09:49:56 -0400
> 
> > Once again, redisplaying a set of windows needs (a) to compute their
> > desired matrices, and (b) compare them against the current matrices,
> > and deliver the differences to the glass.  The 'redisplay' flag takes
> > care of (a), but if there are no current matrices we can trust,
> > there's no way to perform (b).
> 
> But luckily, we can trust the current matrices.

Sometimes we can, sometimes we can't.

(I no longer understand what situation are we talking about.)