Backing out commit #6507 - causes too many problems.

src/traversing.js

@@ -53,12 +53,11 @@ jQuery.fn.extend({
 
 	closest: function( selector ) {
 		var pos = jQuery.expr.match.POS.test( selector ) ? jQuery(selector) : null,
-			closer = 0,
-			context = this.context;
+			closer = 0;
 
 		return this.map(function(){
 			var cur = this;
-			while ( cur && cur.ownerDocument && cur !== context ) {
+			while ( cur && cur.ownerDocument ) {
 				if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) ) {
 					jQuery.data(cur, "closest", closer);
 					return cur;

test/unit/traversing.js

@@ -91,7 +91,7 @@ test("filter(jQuery)", function() {
 })
 
 test("closest()", function() {
-	expect(9);
+	expect(6);
 	isSet( jQuery("body").closest("body").get(), q("body"), "closest(body)" );
 	isSet( jQuery("body").closest("html").get(), q("html"), "closest(html)" );
 	isSet( jQuery("body").closest("div").get(), [], "closest(div)" );
@@ -99,12 +99,6 @@ test("closest()", function() {
 
 	isSet( jQuery("div:eq(1)").closest("div:first").get(), [], "closest(div:first)" );
 	isSet( jQuery("div").closest("body:first div:last").get(), q("fx-tests"), "closest(body:first div:last)" );
-
-	// Test .closest() limited by the context
-	var jq = jQuery("#nothiddendivchild", document.body);
-	isSet( jq.closest("html").get(), [], "Context limited." );
-	isSet( jq.closest("body").get(), [], "Context limited." );
-	isSet( jq.closest("#nothiddendiv").get(), q("nothiddendiv"), "Context not reached." );
 });
 
 test("not(Selector)", function() {