From 9bb3494ce99889e05a7333e38e4da9579ce6af8e Mon Sep 17 00:00:00 2001
From: Timo Tijhof <krinklemail@gmail.com>
Date: Mon, 18 Jun 2012 04:42:24 +0200
Subject: [PATCH] Fix #11925, Pass eventHandle to special.teardown. Closes
 gh-831.

* Added unit test to confirm.
  The third assertion fails without the fix in ./src/event.js
---
 src/event.js       |  2 +-
 test/unit/event.js | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/event.js b/src/event.js
index 6f7252489..33610fd6f 100644
--- a/src/event.js
+++ b/src/event.js
@@ -181,7 +181,7 @@ jQuery.event = {
 			// Remove generic event handler if we removed something and no more handlers exist
 			// (avoids potential for endless recursion during removal of special event handlers)
 			if ( eventType.length === 0 && origCount !== eventType.length ) {
-				if ( !special.teardown || special.teardown.call( elem, namespaces ) === false ) {
+				if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
 					jQuery.removeEvent( elem, type, elemData.handle );
 				}
 
diff --git a/test/unit/event.js b/test/unit/event.js
index a3ba04d8d..401d3e9bf 100644
--- a/test/unit/event.js
+++ b/test/unit/event.js
@@ -1382,6 +1382,21 @@ test("Submit event can be stopped (#11049)", function() {
 	form.remove();
 });
 
+test("on(beforeunload) creates/deletes window property instead of adding/removing event listener", function() {
+	expect(3);
+
+	equal( window.onbeforeunload, null, "window property is null/undefined up until now" );
+
+	var handle = function () {};
+	jQuery(window).on( "beforeunload", handle );
+
+	equal( typeof window.onbeforeunload, "function", "window property is set to a function");
+
+	jQuery(window).off( "beforeunload", handle );
+
+	equal( window.onbeforeunload, null, "window property has been unset to null/undefined" );
+})
+
 test("jQuery.Event( type, props )", function() {
 
 	expect(5);