Make sure regular settings object is set as context for all Ajax requests, if...

Make sure regular settings object is set as context for all Ajax requests, if none is specified. Fixes #5838.

src/ajax.js

@@ -530,7 +530,7 @@ jQuery.extend({
 	handleError: function( s, xhr, status, e ) {
 		// If a local callback was specified, fire it
 		if ( s.error ) {
-			s.error.call( s.context || window, xhr, status, e );
+			s.error.call( s.context || s, xhr, status, e );
 		}
 
 		// Fire the global callback

test/unit/ajax.js

@@ -95,7 +95,7 @@ test("jQuery.ajax() - abort", function() {
 });
 
 test("Ajax events with context", function() {
-	expect(6);
+	expect(14);
 	
 	stop();
 	var context = document.createElement("div");
@@ -104,8 +104,16 @@ test("Ajax events with context", function() {
 		equals( this, context, e.type );
 	}
 
-	function callback(){
-		equals( this, context, "context is preserved on callback" );
+	function callback(msg){
+		return function(){
+			equals( this, context, "context is preserved on callback " + msg );
+		};
+	}
+
+	function nocallback(msg){
+		return function(){
+			equals( typeof this.url, "string", "context is settings on callback " + msg );
+		};
 	}
 	
 	jQuery('#foo').add(context)
@@ -116,20 +124,36 @@ test("Ajax events with context", function() {
 
 	jQuery.ajax({
 		url: url("data/name.html"),
-		beforeSend: callback,
-		success: callback,
-		error: callback,
+		beforeSend: callback("beforeSend"),
+		success: callback("success"),
+		error: callback("error"),
 		complete:function(){
-			callback.call(this);
-			setTimeout(proceed, 300);
+			callback("complete").call(this);
+
+			jQuery.ajax({
+				url: url("data/404.html"),
+				context: context,
+				beforeSend: callback("beforeSend"),
+				error: callback("error"),
+				complete: function(){
+					callback("complete").call(this);
+
+					jQuery('#foo').add(context).unbind();
+
+					jQuery.ajax({
+						url: url("data/404.html"),
+						beforeSend: nocallback("beforeSend"),
+						error: nocallback("error"),
+						complete: function(){
+							nocallback("complete").call(this);
+							start();
+						}
+					});
+				}
+			});
 		},
 		context:context
 	});
-	
-	function proceed(){
-		jQuery('#foo').add(context).unbind();
-		start();
-	}
 });
 
 test("jQuery.ajax() - disabled globals", function() {