GNU bug report logs - #25280
25.1; define-inline doesn't support &rest

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Message #31 received at 25280-done <at> debbugs.gnu.org (full text, mbox):

From: Leo Liu <sdl.web <at> gmail.com>
To: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Cc: 25280-done <at> debbugs.gnu.org
Subject: Re: bug#25280: 25.1; define-inline doesn't support &rest
Date: Thu, 29 Dec 2016 13:54:05 +0800

version: 25.2

On 2016-12-28 22:25 -0500, Stefan Monnier wrote:
>> I misunderstood no support for `,@' implied `. ,'.
>
> No: I can turn
>
>     (a b c . ,d)
>
> into
>
>     (apply #'a b c d)
>
> but doing that for
>
>     (a b ,@c d)
>
> is more cumbersome.

Thanks.

>> Good to know it is not the case.  My experiment seems to suggest that
>> inline-letevals is only needed for variables that are eval'd more than
>> once.
>
> There are cases where inline-letevals can be skipped, indeed, but
> "eval'd only once" is not quite sufficient: you also have to make sure
> it's eval'd at least once, and that the various arguments are evaluated
> in the right order and before anything else happens (to stay true to
> the behavior of a function call).

Understood.

>> In rest:
>> t2.el:4:38:Warning: reference to free variable ‘vector’
> I assume this is with an Emacs build that doesn't yet have my recent
> patch, right?

Exactly.

Leo

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