From c17f589ec99e8309e813a4081eed47f39a0c6120 Mon Sep 17 00:00:00 2001
From: Rick Waldron <waldron.rick@gmail.com>
Date: Mon, 16 May 2011 10:38:36 -0400
Subject: [PATCH] Landing pull request 377. Check custom data !=
 null(undefined), allows zero; Fixes #9285.

More Details:
 - https://github.com/jquery/jquery/pull/377
 - http://bugs.jquery.com/ticket/9285
---
 src/event.js       |  2 +-
 test/unit/event.js | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/event.js b/src/event.js
index 2bed0904..d2d57d67 100644
--- a/src/event.js
+++ b/src/event.js
@@ -345,7 +345,7 @@ jQuery.event = {
 		event.target = elem;
 
 		// Clone any incoming data and prepend the event, creating the handler arg list
-		data = data ? jQuery.makeArray( data ) : [];
+		data = data != null ? jQuery.makeArray( data ) : [];
 		data.unshift( event );
 
 		var cur = elem,
diff --git a/test/unit/event.js b/test/unit/event.js
index 13877e01..f71c7b29 100644
--- a/test/unit/event.js
+++ b/test/unit/event.js
@@ -14,6 +14,26 @@ test("null or undefined handler", function() {
 	} catch (e) {}
 });
 
+test("bind(),live(),delegate() with non-null,defined data", function() {
+
+	expect(3);
+
+	var handler = function( event, data ) {
+				equal( data, 0, "non-null, defined data (zero) is correctly passed" );
+			};
+
+	jQuery("#foo").bind("foo", handler);
+	jQuery("#foo").live("foo", handler);
+	jQuery("div").delegate("#foo", "foo", handler);
+
+	jQuery("#foo").trigger("foo", 0);
+
+	jQuery("#foo").unbind("foo", handler);
+	jQuery("#foo").die("foo", handler);
+	jQuery("div").undelegate("#foo", "foo");
+
+});
+
 test("bind(), with data", function() {
 	expect(4);
 	var handler = function(event) {