From b56801d27f75534a49bb2661b89193f7228d8677 Mon Sep 17 00:00:00 2001
From: Christopher De Cairos <christopherd@mozillafoundation.org>
Date: Wed, 29 May 2013 15:02:00 -0400
Subject: [PATCH] Bug 871700 - filter out duplicate tags

---
 routes/make.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/routes/make.js b/routes/make.js
index 16258a4..91d1a83 100644
--- a/routes/make.js
+++ b/routes/make.js
@@ -35,7 +35,9 @@ module.exports = function( makeCtor, env ) {
       if ( field in body ) {
         // arrays need to be concatenated to avoid overwriting elements in the original.
         if ( Array.isArray( make[ field ] ) ) {
-          make[ field ] = make[ field ].concat( body[ field ] );
+          make[ field ] = make[ field ].concat( body[ field ] ).filter(function( tag, pos, arr ) {
+            return arr.indexOf( tag ) === pos;
+          });
         } else {
           make[ field ] = body[ field ];
         }