Ensures dataTypeExpressions are lowercased for prefilters and transports registrations.

diff --git a/src/ajax.js b/src/ajax.js
index 383ba2b..363e9c8 100644 (file)
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -48,7 +48,7 @@ function addToPrefiltersOrTransports( structure ) {
                }
 
                if ( jQuery.isFunction( func ) ) {
-                       var dataTypes = dataTypeExpression.split( rspacesAjax ),
+                       var dataTypes = dataTypeExpression.toLowerCase().split( rspacesAjax ),
                                i = 0,
                                length = dataTypes.length,
                                dataType,
@@ -62,7 +62,7 @@ function addToPrefiltersOrTransports( structure ) {
                                // any existing element
                                placeBefore = /^\+/.test( dataType );
                                if ( placeBefore ) {
-                                       dataType = dataType.substr( 1 );
+                                       dataType = dataType.substr( 1 ) || "*";
                                }
                                list = structure[ dataType ] = structure[ dataType ] || [];
                                // then we add to the structure accordingly