From 1770fd4548ba991e06854a4e2dd556fc55ddb47c Mon Sep 17 00:00:00 2001
From: Thomas Reggi <socialtr@gmail.com>
Date: Sat, 22 Aug 2015 14:50:09 -0400
Subject: [PATCH] add default empty env object

---
 lib/index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/index.js b/lib/index.js
index 6b301e8..db4b9ec 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -488,6 +488,7 @@ MarkdownIt.prototype.use = function (plugin /*, params, ... */) {
  * and then pass updated object to renderer.
  **/
 MarkdownIt.prototype.parse = function (src, env) {
+  env = (env) ? env : {}
   var state = new this.core.State(src, this, env);
 
   this.core.process(state);