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Re: [Scheme-reports] [r6rs-discuss] redefining eqv? Peter Kourzanov (22 Dec 2010 20:32 UTC)
Re: [Scheme-reports] [r6rs-discuss] redefining eqv? Thomas Bushnell, BSG (22 Dec 2010 21:02 UTC)
Re: [Scheme-reports] [r6rs-discuss] redefining eqv? Eli Barzilay (22 Dec 2010 23:37 UTC)
Re: [r6rs-discuss] [Scheme-reports] Scheme pattern matching: the case for (case) Andre van Tonder (22 Dec 2010 20:52 UTC)
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Re: [Scheme-reports] [r6rs-discuss] Bigloo Peter Kourzanov (22 Dec 2010 20:35 UTC)
Re: [Scheme-reports] [r6rs-discuss] Bigloo Thomas Bushnell, BSG (22 Dec 2010 21:01 UTC)
Re: [Scheme-reports] [r6rs-discuss] returning back to pattern matching Thomas Bushnell, BSG (22 Dec 2010 21:55 UTC)
Re: [Scheme-reports] [r6rs-discuss] returning back to pattern matching Thomas Bushnell, BSG (23 Dec 2010 19:47 UTC)
Re: [Scheme-reports] [r6rs-discuss] returning back to pattern matching Thomas Bushnell, BSG (24 Dec 2010 00:53 UTC)
Re: [r6rs-discuss] [Scheme-reports] Scheme pattern matching: the case for (case) Andre van Tonder 22 Dec 2010 20:51 UTC 
On Wed, 22 Dec 2010, Eli Barzilay wrote:

> An hour ago, Peter Kourzanov wrote:
>> And now do:
>>
>> (define eqv? equal?)
>> (newline)
>> (write (case "asd" (("asd") #t)))
>> (newline)
>>
>> You'll find Tinyscheme, Minischeme, MIT, Scheme48/SCSH included in
>> your list. Ypsilon and Stalin exhibit this behaviour for strings,
>> but not for more structured data like vectors.
>
> This is a *very* different issue -- R5RS systems make it a core
> feature that you can change builtin functions like that, with all
> references to them changing too.

No, it doesn't.  R5RS forbids this, so the above systems are not even R5RS
compliant.

Andre

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