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

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: 52147 <at> debbugs.gnu.org, Paul Pogonyshev <pogonyshev <at> gmail.com>, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: bug#52147: Eager macro-expansion is not performed in `eval-and-compile' functions
Date: Sat, 15 Jan 2022 14:10:32 +0100

Michael Heerdegen <michael_heerdegen <at> web.de> writes:

> Well we do, a bit,
>
>   (info "(elisp) How Programs Do Loading")
>
> says that loading a file performs eager macro expansion and that does
> speed up the resulting code.  `eval', `eval-when-compile' and
> `eval-and-compile' don't perform eager macro expansion.  I don't know to
> what degree this is on purpose.  But if a macro is defined later in the
> file or in another file that has not yet been loaded this may not be
> possible anyway.

It sounds to me like things are basically working as designed.

Perhaps Stefan has some comments; added to the CCs.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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