From 946289c221b2a47b96117de40a1f78e646572c8d Mon Sep 17 00:00:00 2001
From: John McLear <john@mclear.co.uk>
Date: Mon, 8 Apr 2013 19:46:45 +0100
Subject: [PATCH 1/2] temp patch for 1652

---
 src/static/js/Changeset.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/static/js/Changeset.js b/src/static/js/Changeset.js
index b16042126..6d1845220 100644
--- a/src/static/js/Changeset.js
+++ b/src/static/js/Changeset.js
@@ -1663,12 +1663,20 @@ exports.appendATextToAssembler = function (atext, assem) {
  * @param cs {Changeset} 
  * @param pool {AtributePool}
  */
+var lastEvent = null; // This is just a temporary measure to ensure we don't send the exact same changeset twice
+// Documentation for this is available at https://github.com/ether/etherpad-lite/issues/1652
+
 exports.prepareForWire = function (cs, pool) {
+  if(cs == lastEvent){
+    throw new Error("Not sending the same event twice...");
+    return false;
+  }
   var newPool = new AttributePool();
   var newCs = exports.moveOpsToNewPool(cs, pool, newPool);
+  lastEvent = cs;
   return {
     translated: newCs,
-    pool: newPool
+   pool: newPool
   };
 };
 

From bf93500214acf94fca8d323d685d3228c0b6cab9 Mon Sep 17 00:00:00 2001
From: John McLear <john@mclear.co.uk>
Date: Mon, 8 Apr 2013 19:50:52 +0100
Subject: [PATCH 2/2] some polish for a turd

---
 src/static/js/Changeset.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/static/js/Changeset.js b/src/static/js/Changeset.js
index 6d1845220..89ac5d750 100644
--- a/src/static/js/Changeset.js
+++ b/src/static/js/Changeset.js
@@ -1669,14 +1669,13 @@ var lastEvent = null; // This is just a temporary measure to ensure we don't sen
 exports.prepareForWire = function (cs, pool) {
   if(cs == lastEvent){
     throw new Error("Not sending the same event twice...");
-    return false;
   }
   var newPool = new AttributePool();
   var newCs = exports.moveOpsToNewPool(cs, pool, newPool);
   lastEvent = cs;
   return {
     translated: newCs,
-   pool: newPool
+    pool: newPool
   };
 };