--- old/src/jdk/nashorn/internal/runtime/options/OptionTemplate.java	2013-05-27 18:52:58.219622474 +0530
+++ new/src/jdk/nashorn/internal/runtime/options/OptionTemplate.java	2013-05-27 18:52:58.143622095 +0530
@@ -152,6 +152,9 @@
         case "timezone":
             this.defaultValue = TimeZone.getDefault().getID();
             break;
+        case "locale":
+            this.defaultValue = Locale.getDefault().toLanguageTag();
+            break;
         default:
             break;
         }