From 2c9273a86ce7009c0391f574c290259987786b8c Mon Sep 17 00:00:00 2001
From: Matthew Hodgson <matthew@matrix.org>
Date: Wed, 11 Nov 2015 02:00:51 +0100
Subject: [PATCH] avoid the initial sync from clobbering the location bar

---
 src/vector/index.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/vector/index.js b/src/vector/index.js
index 87cbd0b661..115d1de921 100644
--- a/src/vector/index.js
+++ b/src/vector/index.js
@@ -99,13 +99,15 @@ var lastLoadedScreen = null;
 
 // This will be called whenever the SDK changes screens,
 // so a web page can update the URL bar appropriately.
-var onNewScreen = function(screen) {
+var onNewScreen = function(screen, onlyIfBlank) {
     if (!loaded) {
         lastLoadedScreen = screen;
     } else {
-        var hash = '#/' + screen;
-        lastLocationHashSet = hash;
-        window.location.hash = hash;
+        if (!onlyIfBlank || !window.location.hash) {
+            var hash = '#/' + screen;
+            lastLocationHashSet = hash;
+            window.location.hash = hash;
+        }
     }
 }