From: "Basil L. Contovounesios" <contovob@tcd.ie>
To: akater <nuclearspace@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: defmacro with built-in gensym declaration and initialization
Date: Wed, 20 Jan 2021 13:46:16 +0000 [thread overview]
Message-ID: <87turbiuvr.fsf@tcd.ie> (raw)
In-Reply-To: <87bldk6n2l.fsf@gmail.com> (akater's message of "Wed, 20 Jan 2021 08:15:46 +0000")
akater <nuclearspace@gmail.com> writes:
> I suggest extending ~defmacro~ to support ~&gensym~ keyword in its
> lambda list, for convenient declaration and initialization of gensyms.
[...]
> This ~&gensym~ facility eliminates the need for ~with-gensyms~ and
> ~once-only~ in cases when gensyms are created unconditionally by macro
> function (in Common Lisp parlance).
IMO, this minor convenience is insufficient motivation for
conflating/complicating a macro's global arglist, i.e. its arity,
calling convention, etc., with utilities for its local body. Is there
some other motivation? Am I missing something?
Why not provide handy gensym/once-only local conveniences for macro
authors instead (some of which already exist in one form or another,
e.g. macroexp-let2, inline-letevals, and org-with-gensyms)?
Thanks,
--
Basil
next prev parent reply other threads:[~2021-01-20 13:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-20 8:15 defmacro with built-in gensym declaration and initialization akater
2021-01-20 13:46 ` Basil L. Contovounesios [this message]
2021-01-20 15:09 ` Stefan Monnier
2021-01-20 16:47 ` Robin Tarsiger
2021-01-20 19:28 ` akater
2021-01-20 20:55 ` Basil L. Contovounesios
2021-01-21 19:34 ` akater
2021-01-21 20:50 ` Stefan Monnier
2021-01-21 20:50 ` Basil L. Contovounesios
2021-01-21 21:05 ` Stefan Monnier
2021-01-21 21:23 ` Basil L. Contovounesios
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