On latest version of jquery without this change the buttons would remain disabled

fatdude · fatdude · commit bf9e35f0fcdd · 2012-03-01T16:28:09.000Z
diff --git a/jquery.markedit.js b/jquery.markedit.js
@@ -908,7 +908,7 @@
 
         $(buttons).each(function(){
             $(this).removeClass('ui-state-disabled');
-            $(this).attr('disabled', '');
+            $(this).removeAttr('disabled');
         });
 
     };
