diff --git a/src/traversing.js b/src/traversing.js
index d78884798..669c70a50 100644
--- a/src/traversing.js
+++ b/src/traversing.js
@@ -1,3 +1,24 @@
+jQuery.winnow = function( elements, qualifier, keep ) {
+	if(jQuery.isFunction( qualifier )) {
+		return jQuery.grep(elements, function(elem, i) {
+			return !!qualifier.call( elem, i ) === keep;
+		});
+	} else if( qualifier.nodeType ) {
+		return jQuery.grep(elements, function(elem, i) {
+			return (elem === qualifier) === keep;
+		})
+	} else if( typeof qualifier === "string" ) {
+		var filtered = jQuery.grep(elements, function(elem) { return elem.nodeType === 1 });
+
+		if(isSimple.test( qualifier )) return jQuery.multiFilter(qualifier, filtered, !keep);
+		else qualifier = jQuery.multiFilter( qualifier, elements );
+	}
+
+	return jQuery.grep(elements, function(elem, i) {
+		return (jQuery.inArray( elem, qualifier ) >= 0) === keep;
+	});
+}
+
 jQuery.fn.extend({
 	find: function( selector ) {
 		var ret = this.pushStack( "", "find", selector ), length = 0;
@@ -22,16 +43,12 @@ jQuery.fn.extend({
 		return ret;
 	},
 
-	filter: function( selector ) {
-		return this.pushStack(
-			jQuery.isFunction( selector ) &&
-			jQuery.grep(this, function(elem, i){
-				return selector.call( elem, i );
-			}) ||
+	not: function( selector ) {
+		return this.pushStack( jQuery.winnow(this, selector, false), "not", selector);
+	},
 
-			jQuery.multiFilter( selector, jQuery.grep(this, function(elem){
-				return elem.nodeType === 1;
-			}) ), "filter", selector );
+	filter: function( selector ) {
+		return this.pushStack( jQuery.winnow(this, selector, true), "filter", selector );
 	},
 
 	closest: function( selector ) {
@@ -51,20 +68,6 @@ jQuery.fn.extend({
 		});
 	},
 
-	not: function( selector ) {
-		if ( typeof selector === "string" )
-			// test special case where just one selector is passed in
-			if ( isSimple.test( selector ) )
-				return this.pushStack( jQuery.multiFilter( selector, this, true ), "not", selector );
-			else
-				selector = jQuery.multiFilter( selector, this );
-
-		var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
-		return this.filter(function() {
-			return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
-		});
-	},
-
 	add: function( selector ) {
 		return this.pushStack( jQuery.unique( jQuery.merge(
 			this.get(),
diff --git a/test/unit/traversing.js b/test/unit/traversing.js
index bbadf52d2..f585d9ca4 100644
--- a/test/unit/traversing.js
+++ b/test/unit/traversing.js
@@ -51,12 +51,11 @@ test("is(String)", function() {
 	ok( jQuery('#en').is('[lang="de"] , [lang="en"]'), 'Comma-seperated; Check for lang attribute: Expect en or de' );
 });
 
-test("filter()", function() {
-	expect(6);
+test("filter(Selector)", function() {
+	expect(5);
 	isSet( jQuery("#form input").filter(":checked").get(), q("radio2", "check1"), "filter(String)" );
 	isSet( jQuery("p").filter("#ap, #sndp").get(), q("ap", "sndp"), "filter('String, String')" );
 	isSet( jQuery("p").filter("#ap,#sndp").get(), q("ap", "sndp"), "filter('String,String')" );
-	isSet( jQuery("p").filter(function() { return !jQuery("a", this).length }).get(), q("sndp", "first"), "filter(Function)" );
 
 	// using contents will get comments regular, text, and comment nodes
 	var j = jQuery("#nonnodes").contents();
@@ -64,6 +63,33 @@ test("filter()", function() {
 	equals( j.filter("[name]").length, 0, "Check node,textnode,comment to filter the one span" );
 });
 
+test("filter(Function)", function() {
+	expect(1);
+
+	isSet( jQuery("p").filter(function() { return !jQuery("a", this).length }).get(), q("sndp", "first"), "filter(Function)" );
+});
+
+test("filter(Element)", function() {
+	expect(1);
+
+	var element = document.getElementById("text1");
+	isSet( jQuery("#form input").filter(element).get(), q("text1"), "filter(Element)" );
+});
+
+test("filter(Array)", function() {
+	expect(1);
+
+	var elements = [ document.getElementById("text1") ];
+	isSet( jQuery("#form input").filter(elements).get(), q("text1"), "filter(Element)" );
+});
+
+test("filter(jQuery)", function() {
+	expect(1);
+
+	var elements = jQuery("#text1");
+	isSet( jQuery("#form input").filter(elements).get(), q("text1"), "filter(Element)" );
+})
+
 test("closest()", function() {
 	expect(6);
 	isSet( jQuery("body").closest("body").get(), q("body"), "closest(body)" );
@@ -75,24 +101,42 @@ test("closest()", function() {
 	isSet( jQuery("div").closest("body:first div:last").get(), q("fx-tests"), "closest(body:first div:last)" );
 });
 
-test("not()", function() {
-	expect(11);
+test("not(Selector)", function() {
+	expect(7);
 	equals( jQuery("#main > p#ap > a").not("#google").length, 2, "not('selector')" );
-	equals( jQuery("#main > p#ap > a").not(document.getElementById("google")).length, 2, "not(DOMElement)" );
 	isSet( jQuery("p").not(".result").get(), q("firstp", "ap", "sndp", "en", "sap", "first"), "not('.class')" );
 	isSet( jQuery("p").not("#ap, #sndp, .result").get(), q("firstp", "en", "sap", "first"), "not('selector, selector')" );
-	isSet( jQuery("p").not(jQuery("#ap, #sndp, .result")).get(), q("firstp", "en", "sap", "first"), "not(jQuery)" );
-	equals( jQuery("p").not(document.getElementsByTagName("p")).length, 0, "not(Array-like DOM collection)" );
 	isSet( jQuery("#form option").not("option.emptyopt:contains('Nothing'),[selected],[value='1']").get(), q("option1c", "option1d", "option2c", "option3d", "option3e" ), "not('complex selector')");
 
-	var selects = jQuery("#form select");
-	isSet( selects.not( selects[1] ), q("select1", "select3"), "filter out DOM element");
-
 	isSet( jQuery('#ap *').not('code'), q("google", "groups", "anchor1", "mark"), "not('tag selector')" );
 	isSet( jQuery('#ap *').not('code, #mark'), q("google", "groups", "anchor1"), "not('tag, ID selector')" );
-	isSet( jQuery('#ap *').not('#mark, code'), q("google", "groups", "anchor1"), "not('ID, tag selector')"); 
+	isSet( jQuery('#ap *').not('#mark, code'), q("google", "groups", "anchor1"), "not('ID, tag selector')");
 });
 
+test("not(Element)", function() {
+	expect(1);
+
+	var selects = jQuery("#form select");
+	isSet( selects.not( selects[1] ), q("select1", "select3"), "filter out DOM element");
+});
+
+test("not(Function)", function() {
+	isSet( jQuery("p").not(function() { return jQuery("a", this).length }).get(), q("sndp", "first"), "not(Function)" );
+});
+
+test("not(Array)", function() {
+	expect(2);
+
+	equals( jQuery("#main > p#ap > a").not(document.getElementById("google")).length, 2, "not(DOMElement)" );
+	equals( jQuery("p").not(document.getElementsByTagName("p")).length, 0, "not(Array-like DOM collection)" );
+});
+
+test("not(jQuery)", function() {
+	expect(1);
+
+	isSet( jQuery("p").not(jQuery("#ap, #sndp, .result")).get(), q("firstp", "en", "sap", "first"), "not(jQuery)" );
+})
+
 test("andSelf()", function() {
 	expect(4);
 	isSet( jQuery("#en").siblings().andSelf().get(), q("sndp", "sap","en"), "Check for siblings and self" );
@@ -154,16 +198,16 @@ test("prev([String])", function() {
 
 test("slice()", function() {
 	expect(6);
-	
+
 	var $links = jQuery("#ap a");
-	
+
 	isSet( $links.slice(1,2), q("groups"), "slice(1,2)" );
 	isSet( $links.slice(1), q("groups", "anchor1", "mark"), "slice(1)" );
 	isSet( $links.slice(0,3), q("google", "groups", "anchor1"), "slice(0,3)" );
 	isSet( $links.slice(-1), q("mark"), "slice(-1)" );
 
 	isSet( $links.eq(1), q("groups"), "eq(1)" );
-	
+
 	isSet( $links.eq('2'), q("anchor1"), "eq('2')" );
 });