Allow the user to explicitly set a content-type header even when there's no data...

diff --git a/src/ajax.js b/src/ajax.js
index 59c231c..9442608 100644 (file)
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -195,10 +195,8 @@ jQuery.extend({
        lastModified: {},
        etag: {},
 
-       ajax: function( s ) {
-               // Extend the settings, but re-extend 's' so that it can be
-               // checked again later (in the test suite, specifically)
-               s = jQuery.extend(true, {}, jQuery.ajaxSettings, s);
+       ajax: function( origSettings ) {
+               var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings);
                
                var jsonp, status, data,
                        callbackContext = s.context || window,
@@ -333,7 +331,7 @@ jQuery.extend({
                // Need an extra try/catch for cross domain requests in Firefox 3
                try {
                        // Set the correct header, if data is being sent
-                       if ( s.data ) {
+                       if ( s.data || origSettings.contentType ) {
                                xhr.setRequestHeader("Content-Type", s.contentType);
                        }