diff --git a/pub/tree/src/js/main.js b/pub/tree/src/js/main.js
index 126996dad..3af4647c4 100644
--- a/pub/tree/src/js/main.js
+++ b/pub/tree/src/js/main.js
@@ -35,6 +35,7 @@ module.exports = {
 };
 
 
+
 },{"../dispatcher/Dispatcher.coffee":13,"../persistence/TreePersistence.coffee":19}],2:[function(require,module,exports){
 var BodyComponent, CLICK, Links, TreeActions, TreeStore, a, clas, div, query, reactify, recl, ref;
 
@@ -288,6 +289,7 @@ module.exports = query({
 }));
 
 
+
 },{"../actions/TreeActions.coffee":1,"../stores/TreeStore.coffee":20,"./Async.coffee":3,"./BodyComponent.coffee":4,"./Reactify.coffee":10,"classnames":15}],3:[function(require,module,exports){
 var TreeActions, TreeStore, _load, code, div, recl, ref, span;
 
@@ -389,6 +391,7 @@ module.exports = function(queries, Child, load) {
 };
 
 
+
 },{"../actions/TreeActions.coffee":1,"../stores/TreeStore.coffee":20,"./LoadComponent.coffee":9}],4:[function(require,module,exports){
 var div, query, reactify, recl;
 
@@ -414,6 +417,7 @@ module.exports = query({
 }));
 
 
+
 },{"./Async.coffee":3,"./Reactify.coffee":10}],5:[function(require,module,exports){
 var div, recl, ref, textarea;
 
@@ -437,6 +441,7 @@ module.exports = recl({
 });
 
 
+
 },{}],6:[function(require,module,exports){
 var div, recl;
 
@@ -458,6 +463,7 @@ module.exports = {
 };
 
 
+
 },{"./CodeMirror.coffee":5,"./KidsComponent.coffee":7,"./ListComponent.coffee":8,"./SearchComponent.coffee":11,"./TocComponent.coffee":12}],7:[function(require,module,exports){
 var a, div, hr, li, query, reactify, recl, ref, ul;
 
@@ -497,6 +503,7 @@ module.exports = query({
 }));
 
 
+
 },{"./Async.coffee":3,"./Reactify.coffee":10}],8:[function(require,module,exports){
 var a, clas, div, h1, li, query, reactify, recl, ref, ul;
 
@@ -592,6 +599,7 @@ module.exports = query({
 }));
 
 
+
 },{"./Async.coffee":3,"./Reactify.coffee":10,"classnames":15}],9:[function(require,module,exports){
 var div, input, recl, ref, textarea;
 
@@ -632,6 +640,7 @@ module.exports = recl({
 });
 
 
+
 },{}],10:[function(require,module,exports){
 var Virtual, div, load, reactify, recl, ref, rele, span, walk;
 
@@ -699,6 +708,7 @@ module.exports = _.extend(reactify, {
 });
 
 
+
 },{"./LoadComponent.coffee":9}],11:[function(require,module,exports){
 var a, div, input, query, reactify, recl, ref,
   slice = [].slice;
@@ -837,6 +847,7 @@ module.exports = query({
 }));
 
 
+
 },{"./Async.coffee":3,"./Reactify.coffee":10}],12:[function(require,module,exports){
 var div, query, reactify, recl;
 
@@ -967,6 +978,7 @@ module.exports = query({
 }));
 
 
+
 },{"./Async.coffee":3,"./Reactify.coffee":10}],13:[function(require,module,exports){
 var Dispatcher;
 
@@ -988,6 +1000,7 @@ module.exports = _.extend(new Dispatcher(), {
 });
 
 
+
 },{"flux":16}],14:[function(require,module,exports){
 var rend;
 
@@ -1134,6 +1147,7 @@ $(function() {
 });
 
 
+
 },{"./actions/TreeActions.coffee":1,"./components/AnchorComponent.coffee":2,"./components/BodyComponent.coffee":4,"./components/Components.coffee":6,"./persistence/TreePersistence.coffee":19}],15:[function(require,module,exports){
 /*!
   Copyright (c) 2015 Jed Watson.
@@ -1521,7 +1535,7 @@ module.exports = {
   encode: function(obj) {
     var _encode, delim;
     delim = function(n) {
-      return ('_'.repeat(n)) || '.';
+      return Array(n + 1).join('_') || '.';
     };
     _encode = function(obj) {
       var _dep, dep, k, res, sub, v;
@@ -1554,6 +1568,7 @@ module.exports = {
 };
 
 
+
 },{}],20:[function(require,module,exports){
 var EventEmitter, MessageDispatcher, QUERIES, TreeStore, _curr, _data, _tree, clog;
 
@@ -1789,6 +1804,7 @@ TreeStore.dispatchToken = MessageDispatcher.register(function(payload) {
 module.exports = TreeStore;
 
 
+
 },{"../dispatcher/Dispatcher.coffee":13,"events":21}],21:[function(require,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
diff --git a/pub/tree/src/js/persistence/TreePersistence.coffee b/pub/tree/src/js/persistence/TreePersistence.coffee
index 7f6f17f19..becce7bea 100644
--- a/pub/tree/src/js/persistence/TreePersistence.coffee
+++ b/pub/tree/src/js/persistence/TreePersistence.coffee
@@ -3,7 +3,7 @@ module.exports =
     url = "#{window.tree.basepath(path)}.json?q=#{@encode query}"
     $.get url, {}, (data) -> if cb then cb null,data
   encode: (obj)->
-    delim = (n)-> ('_'.repeat n) || '.'
+    delim = (n)-> Array(n+1).join('_') || '.'
     _encode = (obj)->
       if typeof obj isnt 'object'
         return [0,obj]