Re: [PATCH] Adding with-gensyms and once-only to subr-x

[Sean Whitton]

Hello,

On Mon 11 Apr 2022 at 12:48pm -04, Stefan Monnier wrote:

>> Lately I have been finding myself wanting with-gensyms and once-only,
>> two classic macro-writing macros, available in core Elisp.  (There is
>> already org-with-gensyms, but it's not in the least bit Org-specific.)
>
> I think `once-only` is what we (well, I) called `macroexp-let2`.

Ah, thank you for the pointer.

(macroexp-let2* nil ((foo foo) (bar bar)) FORMS)

is quite a bit more verbose than (once-only (foo bar) FORMS), however.
So I would be inclined to keep once-only, though reimplemented in terms
of macroexp-let2*.  Does that sound reasonable?

-- 
Sean Whitton