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Re: [Gcl-devel] Problems with TYPEP

From: Camm Maguire
Subject: Re: [Gcl-devel] Problems with TYPEP
Date: 11 Aug 2005 22:22:06 -0400
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2

Thanks!  I didn't look carefully at typep, (or anything else other
than subtypep really), so if you see anything else please let me know.

Take care,

"Paul F. Dietz" <address@hidden> writes:

> Looking over gcl_predlib.lsp, I see some problems with TYPEP:
>  >(typep nil nil)
> T
> (Remember, NIL is the empty type; NULL is the type containing NIL.)
> Also, typep-int contains this code fragment:
> (case tp
>      (cons (and (consp object) (typep-int (car object) (car i)) (typep-int 
> (cdr object) (cadr i))))
> which, on the type (CONS T), will be calling itself
> recurively on (cdr object) and nil.  That type is equivalent
> to (CONS T T).
> I'll commit a patch for this in a bit.
>       Paul
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> Gcl-devel mailing list
> address@hidden
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Camm Maguire                                            address@hidden
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah

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