if ( nsPrefix == NULL && nsURI == NULL ) {
            /* special case: empty namespace */
            if ( (ns = xmlSearchNs(node->doc, node, NULL)) &&
                 ( ns->href && xmlStrlen( ns->href ) != 0 ) ) {
                /* won't take it */
                RETVAL = 0;
            } else if ( flag ) {
                /* no namespace */
                xmlSetNs(node, NULL);
                RETVAL = 1;
            } else {
                RETVAL = 0;
            }
        }