[jQuery] Did I get *all* of the XPath plugin?

Is this all I need to add to my external .js library to fully include
the Xpath plugin?

/*
 * Simple XPath Compatibility Plugin for jQuery 1.1
 * By John Resig
 * Dual licensed under MIT and GPL.
 */

(function(jQuery){

        var find = jQuery.find;

        jQuery.find = function(selector, context){

                // Convert the root / into a different context
                if ( !selector.indexOf("/") ) {
                        context = context.documentElement;
                        selector = selector.replace(/^\/\w*/, "");
                        if ( !selector )
                                return [ context ];
                }

                // Convert // to " "
                selector = selector.replace(/\/\//g, " ");

                // Convert / to >
                selector = selector.replace(/\//g, ">");

                // Naively convert [elem] into :has(elem)
                selector = selector.replace(/\[([EMAIL PROTECTED])\]/g, 
function(m, selector){
                        return ":has(" + selector + ")";
                });

                // Naively convert /.. into a new set of expressions
                if ( selector.indexOf(">..") >= 0 ) {
                        var parts = selector.split(/>\.\.>?/g);
                        var cur = jQuery(parts[0], context);

                        for ( var i = 1; i < parts.length; i++ )
                                cur = cur.parent(parts[i]);

                        return cur.get();
                }

                return find(selector, context);
        };

})(jQuery);