Fixes abort in prefilter. No global event will be fired in that case even if...

Fixes abort in prefilter. No global event will be fired in that case even if the global option is set to true. Unit test added.

src/ajax.js

@@ -388,6 +388,8 @@ jQuery.extend({
 			parts,
 			// The jqXHR state
 			state = 0,
+			// To know if global events are to be dispatched
+			fireGlobals,
 			// Loop variable
 			i,
 			// Fake xhr
@@ -529,7 +531,7 @@ jQuery.extend({
 			jqXHR.statusCode( statusCode );
 			statusCode = undefined;
 
-			if ( s.global ) {
+			if ( fireGlobals ) {
 				globalEventContext.trigger( "ajax" + ( isSuccess ? "Success" : "Error" ),
 						[ jqXHR, s, isSuccess ? success : error ] );
 			}
@@ -537,7 +539,7 @@ jQuery.extend({
 			// Complete
 			completeDeferred.resolveWith( callbackContext, [ jqXHR, statusText ] );
 
-			if ( s.global ) {
+			if ( fireGlobals ) {
 				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s] );
 				// Handle the global AJAX counter
 				if ( !( --jQuery.active ) ) {
@@ -594,6 +596,14 @@ jQuery.extend({
 		// Apply prefilters
 		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
 
+		// If request was aborted inside a prefiler, stop there
+		if ( state === 2 ) {
+			return false;
+		}
+
+		// We can fire global events as of now if asked to
+		fireGlobals = s.global;
+
 		// Uppercase the type
 		s.type = s.type.toUpperCase();
 
@@ -601,7 +611,7 @@ jQuery.extend({
 		s.hasContent = !rnoContent.test( s.type );
 
 		// Watch for a new set of requests
-		if ( s.global && jQuery.active++ === 0 ) {
+		if ( fireGlobals && jQuery.active++ === 0 ) {
 			jQuery.event.trigger( "ajaxStart" );
 		}
 
@@ -678,7 +688,7 @@ jQuery.extend({
 				// Set state as sending
 				state = jqXHR.readyState = 1;
 				// Send global event
-				if ( s.global ) {
+				if ( fireGlobals ) {
 					globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
 				}
 				// Timeout

test/unit/ajax.js

@@ -2177,6 +2177,25 @@ test("jQuery.ajax - transitive conversions", function() {
 
 });
 
+test("jQuery.ajax - abort in prefilter", function() {
+
+	expect( 1 );
+
+	jQuery.ajaxPrefilter(function( options, _, jqXHR ) {
+		if ( options.abortInPrefilter ) {
+			jqXHR.abort();
+		}
+	});
+
+	strictEqual( jQuery.ajax({
+		abortInPrefilter: true,
+		error: function() {
+			ok( false, "error callback called" );
+		}
+	}), false, "Request was properly aborted early by the prefilter" );
+
+});
+
 test("jQuery.ajax - active counter", function() {
     ok( jQuery.active == 0, "ajax active counter should be zero: " + jQuery.active );
 });