[cl-gd-announce] New version 0.4.5 (Was: cl-gd:make-stream-fn)

[Edi Weitz]

[Cc to mailing list]

On Tue, 15 Mar 2005 19:49:56 +0100, "Walter C. Pelissero" <walter at pelissero.de> wrote:

> I'm trying your cl-gd with PAServe and stumbled in a minor glitch in
> MAKE-STREAM-FN.  The COND first checks for:
>
>   (subtypep (stream-element-type stream) '(unsigned-byte 8))
>
> and then
>
>   (subtypep (stream-element-type stream) 'character)
>
> Which both fail miserably at least on CMUCL with *HTML-STREAM* as
> STREAM.  The reason is that:
>
> (stream-element-type *HTML-STREAM*) => '(OR CHARACTER (UNSIGNED-BYTE 8))
>
> (subtypep '(or character (unsigned-byte 8)) 'character) => NIL T
>
> (subtypep '(or character (unsigned-byte 8)) '(unsigned-byte 8)) => NIL T
>
> Apparently changing the order of the operands, makes the COND work
> as expected, although, as far as I understand, the semantic of
> subtypep isn't respected.

No, I think CMUCL is right.  This was a thinko in my code.

Thanks for the report, I've uploaded a new version which fixes this.

Cheers,
Edi.