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Re: gv-exander for 'list'


From: Michael Heerdegen
Subject: Re: gv-exander for 'list'
Date: Wed, 20 Mar 2019 19:15:51 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Stefan Monnier <address@hidden> writes:

> > I mean that something like
> >
> > (cl-letf (((list a) (list 1)))
> >   a)
> >
> > errors unless variable a is already bound.
>
> Oh, right, that too.

Ok, then let's forget the idea.

BTW, in

> + (funcall do `(list ,@(mapcar #'car getters+setters))
> +          (lambda (v)
> +            (macroexp-let2 macroexp-copyable-p v v
> +              (macroexp-progn
> +               (mapcar (lambda (x) (funcall (cdr x) `(pop ,v)))
> +                       getters+setters))))))))

is there a trick to avoid the redundant macroexp-progn in such a
situation?  macroexp-let2 only accept a body as &rest, but since it's a
macro I can't `apply' it.


Thanks,

Michael.



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