GNU bug report logs - #59786
Allowing arbitrary expressions in cl-labels

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Message #16 received at 59786 <at> debbugs.gnu.org (full text, mbox):

From: Sean Whitton <spwhitton <at> spwhitton.name>
To: 59786 <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#59786: Allowing arbitrary expressions in cl-labels
Date: Sun, 15 Jan 2023 10:11:54 -0700

Hello,

On Fri 02 Dec 2022 at 02:44PM -05, Stefan Monnier wrote:

> After I introduced this in `cl-flet` it was pointed out that it was an
> incompatible change since BODY... can be the empty list.  Another option
> is to use a syntax like:
>
>     (FUNC = EXP)           the new new syntax
>
> which should not suffer from such incompatibility since ARGS should
> never be of the form `=`.

I'm usually in support adding new capabilities to existing macros, but
in this case, the cost of using an equals sign is rather high.
How about just defining a new macro fletrec that works this way, like
letrec but for function cells?  That would seem like it would address
your usecase.

-- 
Sean Whitton

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