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

[Stefan Monnier]

> ;;;; 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