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Re: M-. vs C-h o

From: Eli Zaretskii
Subject: Re: M-. vs C-h o
Date: Fri, 22 Oct 2021 09:25:00 +0300

> From: Hongyi Zhao <>
> Date: Fri, 22 Oct 2021 08:28:48 +0800
> So, I want to know the correspondence of the following two descriptions:
> DEFUN ("mapc", Fmapc, Smapc, 2, 2, 0,
> and

'mapc' is a "primitive", i.e. a Lisp-callable function that's
implemented in C.  I suggest to read the node "Writing Emacs
Primitives" in the ELisp manual, it will explain that to you.

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