Index: selector.js
===================================================================
--- selector.js	(revisione 2158)
+++ selector.js	(copia locale)
@@ -317,7 +317,7 @@
 		while ( t  && t != last ) {
 			last = t;
 
-			var p = jQuery.parse, m;
+			var p = jQuery.parse, m, f;
 
 			for ( var i = 0; p[i]; i++ ) {
 				m = p[i].exec( t );
@@ -327,9 +327,11 @@
 					t = t.substring( m[0].length );
 
 					// Re-organize the first match
-					if ( jQuery.expr[ m[1] ]._resort )
-						m = jQuery.expr[ m[1] ]._resort( m );
-
+					f = jQuery.expr[ m[1] ];
+          if ( f._resort )
+						m = f._resort( m );
+          f = jQuery.expr[ m[1] ];
+          
 					m[2] = m[2].replace(/\\/g, "");
 
 					break;
@@ -350,13 +352,13 @@
 
 			// Otherwise, find the expression to execute
 			else {
-				var f = jQuery.expr[m[1]];
+				var f1 = f;
 				if ( typeof f != "string" )
-					f = jQuery.expr[m[1]][m[2]];
+					f = f[m[2]];
 
 				// Build a custom macro to enclose it
 				eval("f = function(a,i){" +
-					( jQuery.expr[ m[1] ]._prefix || "" ) +
+					( f1._prefix || "" ) +
 					"return " + f + "}");
 
 				// Execute it against the current filter