From 6d55bab4c87c244af7515fbe4b54b615b56cf4a8 Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Wed, 24 Sep 2014 15:26:38 -0600
Subject: [PATCH] Fix CommandRegistry::get/restoreSnapshot
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I didn’t realize that deepClone was not handling functions correctly.
I’ve implemented clone manually to the exact depth needed instead.
---
 src/command-registry.coffee | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/command-registry.coffee b/src/command-registry.coffee
index abeaa155e..c97534398 100644
--- a/src/command-registry.coffee
+++ b/src/command-registry.coffee
@@ -152,12 +152,17 @@ class CommandRegistry
     @handleCommandEvent(eventWithTarget)
 
   getSnapshot: ->
-    _.deepClone(@listenersByCommandName)
+    snapshot = {}
+    for commandName, listeners of @listenersByCommandName
+      snapshot[commandName] = listeners.slice()
+    snapshot
 
   restoreSnapshot: (snapshot) ->
     rootNode = @getRootNode()
     @setRootNode(null) # clear listeners for current commands
-    @listenersByCommandName = _.deepClone(snapshot)
+    @listenersByCommandName = {}
+    for commandName, listeners of snapshot
+      @listenersByCommandName[commandName] = listeners.slice()
     @setRootNode(rootNode) # restore listeners for commands in snapshot
 
   handleCommandEvent: (originalEvent) =>