Ticket #8777 undelegate by namespace

src/event.js

@@ -1027,6 +1027,14 @@ jQuery.each(["live", "die"], function( i, name ) {
 			return this;
 		}
 
+		if ( name === "die" && !types &&
+					origSelector && origSelector[0] === "." ) {
+
+			context.unbind( origSelector );
+
+			return this;
+		}
+
 		if ( jQuery.isFunction( data ) ) {
 			fn = data;
 			data = undefined;
@@ -1184,3 +1192,4 @@ jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblcl
 });
 
 })( jQuery );
+

test/unit/event.js

@@ -1956,6 +1956,27 @@ test("delegate with submit", function() {
 	jQuery(document).undelegate();
 });
 
+test("undelegate() with only namespaces", function(){
+	expect(2);
+
+	var $delegate = jQuery("#liveHandlerOrder"),
+			count = 0;
+
+	$delegate.delegate("a", "click.ns", function(e) {
+		count++;
+	});
+
+	jQuery("a", $delegate).eq(0).trigger("click.ns");
+
+	equals( count, 1, "delegated click.ns");
+
+	$delegate.undelegate(".ns");
+
+	jQuery("a", $delegate).eq(1).trigger("click.ns");
+
+	equals( count, 1, "no more .ns after undelegate");
+});
+
 test("Non DOM element events", function() {
 	expect(1);
 
@@ -2027,3 +2048,4 @@ test("event properties", function() {
 	}).click();
 });
 */
+