From c223e7f58fb873422ce24c35d4c87eb4f0cd8ec3 Mon Sep 17 00:00:00 2001
From: Nick O'Leary <nick.oleary@gmail.com>
Date: Fri, 3 Oct 2014 14:47:23 +0100
Subject: [PATCH] Avoid writing unchanged settings

---
 red/settings.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/red/settings.js b/red/settings.js
index 4cf0b3635..4921e7c4d 100644
--- a/red/settings.js
+++ b/red/settings.js
@@ -16,6 +16,8 @@
 
 var when = require("when");
 
+var assert = require("assert");
+
 var userSettings = null;
 var globalSettings = null;
 var storage = null;
@@ -59,7 +61,13 @@ var persistentSettings = {
             throw new Error("Settings not available");
         }
         globalSettings[prop] = value;
-        return storage.saveSettings(globalSettings);
+        var current = persistentSettings.get(prop);
+        try {
+            assert.deepEqual(current,value);
+            return when.resolve();
+        } catch(err) {
+            return storage.saveSettings(globalSettings);
+        }
     },
     
     available: function() {