Alain, If I understand your fix correctly, you want to interpret NIL immediately as an empty array. Before, NIL was interpreted as a boolean, no ? What would be best ? In CL, this very convenient fact (false == empty list) is a problem when you want auto typing of arguments. Any other opinions ? Sven On 21 Dec 2005, at 05:09, Alain.Picard@memetrics.com wrote:

Hi Sven!

...

I note that empty arrays and empty lists are not treated similarly, to wit:

This definition of encode-xml-rpc-value fixes the problem I just reported:

(defun encode-xml-rpc-value (arg stream) (write-string "<value>" stream) (cond ((null arg) (encode-xml-rpc-array arg stream)) ((or (stringp arg) (symbolp arg)) (write-string "<string>" stream) (print-string-xml (string arg) stream) (write-string "</string>" stream)) ((integerp arg) (format stream "<int>~d</int>" arg)) ((floatp arg) (format stream "<double>~f</double>" arg)) ((or (null arg) (eq arg t)) (write-string "<boolean>" stream) (write-string (if arg 1 0) stream) (write-string "</boolean>" stream)) ((and (arrayp arg) (= (array-rank arg) 1) (subtypep (array-element-type arg) '(unsigned-byte 8))) (write-string "<base64>" stream) (encode-base64-bytes arg stream) (write-string "</base64>" stream)) ((xml-rpc-time-p arg) (write-string "<dateTime.iso8601>" stream) (universal-time->iso8601 (xml-rpc-time-universal-time arg) stream) (write-string "</dateTime.iso8601>" stream)) ((xml-literal-p arg) (write-string (xml-literal-content arg) stream)) ((or (listp arg) (vectorp arg)) (encode-xml-rpc-array arg stream)) ((xml-rpc-struct-p arg) (encode-xml-rpc-struct arg stream)) ;; add generic method call (t (error "cannot encode ~s" arg))) (write-string "</value>" stream))

Cheers, --ap