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From: Tomas Hlavaty <tom@logand.com>
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Subject: Re: named-let
Date: Mon, 11 Jan 2021 23:51:48 +0100
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Cc: emacs-devel@gnu.org, Zhu Zihao <all_but_last@163.com>,
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To: Andrea Corallo <akrl@sdf.org>
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On Mon 11 Jan 2021 at 22:40, Andrea Corallo <akrl@sdf.org> wrote:
> As a side note, the native compiler supports that also for regular
> functions when compiling at speed 3 (not much tested tho :)

Which Emacs version has native compiler available?

How does one specify speed 3?  Is that like in Common Lisp (declare
(optimize (speed 3)))?