GNU bug report logs - #52147
Eager macro-expansion is not performed in `eval-and-compile' functions

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From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Paul Pogonyshev <pogonyshev <at> gmail.com>
Cc: 52147 <at> debbugs.gnu.org
Subject: bug#52147: Eager macro-expansion is not performed in `eval-and-compile' functions
Date: Sun, 28 Nov 2021 11:30:20 +0100

Hello Paul,

> (eval-and-compile
>   (defun my-func-eac (what)
>     (my-macro what)))
>
> (defun my-func-normal (what)
>   (my-macro what))
>
> (print (symbol-function 'my-func-eac))
> (print (symbol-function 'my-func-normal))
>
> `eval-and-compile' is advertised in Elisp manual to make
> byte-compilation of certain macros without prior loading
> possible. Looks strange that at the same time it can worsen
> performance of non-byte-compiled code.

Is the issue you want to draw attention to that an interpreted
`eval-and-compile' form doesn't macroexpand its body?

Michael.

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