1 files changed, 19 insertions, 0 deletions
diff --git a/toolkit/locales/gen_multilocale.py b/toolkit/locales/gen_multilocale.py
new file mode 100644
index 0000000000..14e8c80cb2
--- /dev/null
+++ b/toolkit/locales/gen_multilocale.py
@@ -0,0 +1,19 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from __future__ import print_function, unicode_literals
+
+import sys
+
+
+def main(output, *locales):
+    locales = list(locales)
+    if "en-US" not in locales:
+        locales.append("en-US")
+
+    print(",".join(locales), file=output)
+
+
+if __name__ == "__main__":
+    main(sys.stdout, *sys.argv[1:])