Re: M-. vs C-h o

[Hongyi Zhao]

On Fri, Oct 22, 2021 at 2:26 PM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > From: Hongyi Zhao <hongyi.zhao@gmail.com>
> > 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 FUNCTION SEQUENCE)
>
> '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.

Thank you. Emanuel Berg has told me the following:

(info "(elisp)Writing Emacs Primitives")

HZ