From: ludo@gnu.org (Ludovic Courtès)
To: Stefan Israelsson Tampe <stefan.itampe@gmail.com>
Cc: guile-devel@gnu.org
Subject: Re: Enhancement to the syntax system?
Date: Tue, 10 Jul 2012 17:22:36 +0200 [thread overview]
Message-ID: <87hatftzcz.fsf@gnu.org> (raw)
In-Reply-To: <CAGua6m2G+ZTKxdczsX+8JCP1qe9wWfK7p_2oHgY27D-=rkE=OA@mail.gmail.com> (Stefan Israelsson Tampe's message of "Tue, 10 Jul 2012 15:35:27 +0200")
Hi,
Stefan Israelsson Tampe <stefan.itampe@gmail.com> skribis:
> racket:
> (define-for-syntax (f x) #`(let ((x 1)) #,x))
>> (define-syntax (g x) (syntax-case x ()((_ y) #`(let ((x y)) #,(f #'x))))
> )
>> (g 4)
> 4
>
> In guile,
> scheme@(guile-user)> (define (f x) #`(let ((x 1)) #,x))
> scheme@(guile-user)> (define-syntax g (lambda (x) (syntax-case x () ((_ y)
> #`(let ((x y)) #,(f #'x))))))
> scheme@(guile-user)> (g 4)
> $1 = 1
> !
>
> I much prefer rackets version here. I will file a bug report and also try
> to understand what spec that racket is following!
Aaah, indeed, that’s a “better” outcome! :-)
Ludo’.
next prev parent reply other threads:[~2012-07-10 15:22 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-30 15:22 Enhancement to the syntax system? Stefan Israelsson Tampe
2012-07-02 19:28 ` Ludovic Courtès
2012-07-02 20:43 ` Stefan Israelsson Tampe
2012-07-02 22:41 ` Ludovic Courtès
2012-07-03 14:37 ` Stefan Israelsson Tampe
2012-07-03 21:33 ` Ludovic Courtès
2012-07-03 21:52 ` Stefan Israelsson Tampe
2012-07-04 7:47 ` Marijn
2012-07-04 8:04 ` Stefan Israelsson Tampe
2012-07-09 15:52 ` Ludovic Courtès
2012-07-09 17:40 ` Stefan Israelsson Tampe
2012-07-10 8:24 ` Ludovic Courtès
2012-07-10 13:35 ` Stefan Israelsson Tampe
2012-07-10 14:34 ` Marijn
2012-07-10 14:51 ` [racket-dev] " Eli Barzilay
[not found] ` <20476.16781.257276.194149-a5nvgYPMCZcx/1z6v04GWfZ8FUJU4vz8@public.gmane.org>
2012-07-10 15:03 ` Matthew Flatt
2012-07-10 15:26 ` [racket-dev] " Ludovic Courtès
2012-07-10 15:44 ` Stefan Israelsson Tampe
2012-07-10 17:47 ` Stefan Israelsson Tampe
2012-07-10 16:48 ` Eli Barzilay
2014-05-03 21:29 ` Marijn Schouten (hkBst)
2012-07-10 15:44 ` Ryan Culpepper
2012-07-10 15:22 ` Ludovic Courtès [this message]
2012-07-10 7:36 ` Stefan Israelsson Tampe
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