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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: How to add pseudo vector types
Date: Tue, 20 Jul 2021 19:48:00 +0300
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Cc: cpitclaudel@gmail.com, monnier@iro.umontreal.ca, emacs-devel@gnu.org
To: Stephen Leake <stephen_leake@stephe-leake.org>
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In-Reply-To: <86a6mh54ko.fsf@stephe-leake.org> (message from Stephen Leake on
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> From: Stephen Leake <stephen_leake@stephe-leake.org>
> Date: Tue, 20 Jul 2021 09:32:23 -0700
> Cc: Clément Pit-Claudel <cpitclaudel@gmail.com>,
>  emacs-devel@gnu.org
> 
> Computing fontification and indentation must be synchronous.

I wouldn't say "must", but going async on them certainly brings in a
lot more complexity, and we should avoid that unless it's REALLY
needed.