From ff64a8340cfd2d82ded628b7f904ca539e786025 Mon Sep 17 00:00:00 2001
From: gorhill <rhill@raymondhill.net>
Date: Wed, 18 Jan 2017 13:35:10 -0500
Subject: [PATCH] code review: only built-in assets are candidates for removal
 when updating assets.json

---
 src/js/assets.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/js/assets.js b/src/js/assets.js
index f4daf8f28..42211c33a 100644
--- a/src/js/assets.js
+++ b/src/js/assets.js
@@ -352,9 +352,12 @@ var updateAssetSourceRegistry = function(json) {
 
     getAssetSourceRegistry(function(oldDict) {
         var assetKey;
-        // Remove obsolete entries
+        // Remove obsolete entries (only those which were built-in).
         for ( assetKey in oldDict ) {
-            if ( newDict[assetKey] === undefined ) {
+            if (
+                newDict[assetKey] === undefined &&
+                oldDict[assetKey].submitter === undefined
+            ) {
                 unregisterAssetSource(assetKey);
             }
         }