Re: What makes set-window-buffer slow?

[Alan Mackenzie]

Hello, Clément.

On Thu, Jun 23, 2016 at 01:45:56PM -0400, Clément Pit--Claudel wrote:
> Thanks for this suggestion! I probably have to investigate why
> redisplay is slow, then; that's bound to be rather tricky :/

Redisplay is NOT slow.  It's written in C and is heavily optimised.

> Is there a reason for set-window-buffer to trigger redisplay if the window 
> was already displaying that same buffer?

I can't answer your exact question, but should redisplay get triggered
in these circumstances, its optimisations would ensure that the reusable
part of the display would, in fact, get reused.

> Clément.

-- 
Alan Mackenzie (Nuremberg, Germany).