From a0ded8c3d0cb09dc852d0772243b0705b852a878 Mon Sep 17 00:00:00 2001
From: David Greenspan <dgreenspan@alum.mit.edu>
Date: Tue, 18 Sep 2012 15:01:28 -0700
Subject: [PATCH] Fix Spark in Firefox 3.6-4

---
 packages/spark/spark.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/spark/spark.js b/packages/spark/spark.js
index 3a9d3b7cfcb..55d34e03af1 100644
--- a/packages/spark/spark.js
+++ b/packages/spark/spark.js
@@ -91,8 +91,9 @@ var notifyWatchers = function (start, end) {
 };
 
 Spark._createId = function () {
+  // Chars can't include '-' to be safe inside HTML comments.
   var chars =
-        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+_";
   var id = "";
   for (var i = 0; i < 8; i++)
     id += chars.substr(Math.floor(Meteor.random() * 64), 1);