GNU bug report logs - #17498
24.4.50; This function has a compiler macro `yes--cmacro'.

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Package: emacs;

Reported by: Leo Liu <sdl.web <at> gmail.com>

Date: Thu, 15 May 2014 15:07:02 UTC

Severity: minor

Found in version 24.4.50

Done: Leo Liu <sdl.web <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #8 received at 17498 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Leo Liu <sdl.web <at> gmail.com>
Cc: 17498 <at> debbugs.gnu.org
Subject: Re: bug#17498: 24.4.50;
 This function has a compiler macro `yes--cmacro'.
Date: Thu, 15 May 2014 15:43:11 -0400

> ;;;; BEGIN
> (defun yes ()
>   )
> (when nil
>   (cl-define-compiler-macro yes (&rest _)))
> ;;;; END

> ,----[ C-h f yes RET ]
> | yes is a Lisp function.
> | 
> | (yes)
> | 
> | This function has a compiler macro `yes--cmacro'.
> | 
> | Not documented.
> | 
> | [back]
> `----

> how is it possible? the compiler macro is defined at macro expansion
> time?

Pretty much, yes.  That's because the compiler macro is likely to be
needed/useful while compiling the rest of the file (before it gets
loaded).


        Stefan
This bug report was last modified 11 years and 13 days ago.

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