Re: Making Emacs Lisp easier to debug

[Eli Zaretskii]

> Date: Sat, 11 Nov 2023 11:04:01 +0000
> Cc: emacs-devel@gnu.org
> From: Alan Mackenzie <acm@muc.de>
> 
> :-)  I really meant has anybody looked into making redisplay reentrant.

Good luck with that!

(I also don't understand why you think this will help with font-lock,
nor even how it would work in general, should it be possible.
Re-entering redisplay in the middle of a redisplay cycle means that
the outer redisplay didn't finish preparing the glyph matrices, and
what do you want the inner redisplay to do in such a case?)