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From: Richard M Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: multi-threaded Emacs
Date: Wed, 10 Dec 2008 13:18:46 -0500
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To: Stefan Monnier <monnier@IRO.UMontreal.CA>
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In-reply-to: <jwvbpvlxhpy.fsf-monnier+emacs@gnu.org> (message from Stefan
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    I think if `yield' is called in accept-process-output and read_char, the
    remaining places where `yield' might be needed will be fairly few.

That sort of thing could be enough for the thread-per-terminal job.
It would also be good for specially written parallel programs.
But that's as far as it would go.