Re: [Chicken-hackers] Bug shadowing syntactic keyword

[Marijn Schouten (hkBst)]

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John Cowan wrote:
> Thomas Bushnell BSG scripsit:
> 
>> But if we try "begin" as the formal, it fails interestingly:
>> ((lambda (begin) (begin 1 2 3)) (lambda args args))
>>   => ((1 2 3))
>>
>> And if we try "define" as the formal, we get a spinning infinite loop of
>> some kind:
>> ((lambda (define) (define 1 2 3)) (lambda args args))
>>   => never returns
> 
> Yes.  In effect, the primitive syntax indicators of R5RS are reserved
> words in Chicken 3.  Chicken 4 does not have this bug, and it is
> overridden if you load any of the macro packages into Chicken 3.
> 

this bug also still exists in chicken-4.0:

$ csi

CHICKEN
(c)2008-2009 The Chicken Team
(c)2000-2007 Felix L. Winkelmann
Version 4.0.0 - SVN rev. 13887
linux-unix-gnu-x86-64 [ 64bit manyargs dload ptables applyhook ]
compiled 2009-04-06 on hakbak (Linux)

#;1> ((lambda (begin) (begin 1 2 3)) (lambda args args))
((1 2 3))

Marijn

- --
If you cannot read my mind, then listen to what I say.

Marijn Schouten (hkBst), Gentoo Lisp project, Gentoo ML
<http://www.gentoo.org/proj/en/lisp/>, #gentoo-{lisp,ml} on FreeNode
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