Always serialize the DOM in one way.

www/pad/main.js

@@ -44,6 +44,16 @@ define([
         return true;
     };
 
+    /* catch `type="_moz"` before it goes over the wire */
+    var brFilter = function (hj) {
+        if (hj[1].type === '_moz') { hj[1].type = undefined; }
+        return hj;
+    };
+
+    var stringifyDOM = function (dom) {
+        return JSON.stringify(Hyperjson.fromDOM(dom, isNotMagicLine, brFilter));
+    };
+
     var andThen = function (Ckeditor) {
         /*  This is turned off because we prefer that the channel name
             be chosen by the server, not generated by the client.
@@ -189,7 +199,7 @@ define([
 
             var realtimeOptions = {
                 // provide initialstate...
-                initialState: JSON.stringify(Hyperjson.fromDOM(inner, isNotMagicLine)),
+                initialState: stringifyDOM(inner) || '{}',
 
                 // the websocket URL
                 websocketURL: Config.websocketURL,
@@ -241,8 +251,7 @@ define([
                 // Build a new stringified Chainpad hyperjson without metadata to compare with the one build from the dom
                 shjson = JSON.stringify(hjson);
 
-                var hjson2 = Hyperjson.fromDOM(inner);
-                var shjson2 = JSON.stringify(hjson2);
+                var shjson2 = stringifyDOM(inner);
                 if (shjson2 !== shjson) {
                     console.error("shjson2 !== shjson");
                     module.realtimeInput.patchText(shjson2);
@@ -283,12 +292,6 @@ define([
 
             var rti = module.realtimeInput = realtimeInput.start(realtimeOptions);
 
-            /* catch `type="_moz"` before it goes over the wire */
-            var brFilter = function (hj) {
-                if (hj[1].type === '_moz') { hj[1].type = undefined; }
-                return hj;
-            };
-
             /*  It's incredibly important that you assign 'rti.onLocal'
                 It's used inside of realtimeInput to make sure that all changes
                 make it into chainpad.