From c5145cedb2c46fa17592305e4b5b14de9774a887 Mon Sep 17 00:00:00 2001
From: Ingvar Stepanyan <me@rreverser.com>
Date: Sun, 26 Oct 2014 23:14:26 +0200
Subject: [PATCH] Fix no-options case for acorn.

---
 acorn.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acorn.js b/acorn.js
index adf467542e..ea4121ec88 100644
--- a/acorn.js
+++ b/acorn.js
@@ -137,7 +137,7 @@
   function setOptions(opts) {
     options = {};
     for (var opt in defaultOptions)
-      options[opt] = has(opts, opt) ? opts[opt] : defaultOptions[opt];
+      options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt];
     sourceFile = options.sourceFile || null;
     if (isArray(options.onToken)) {
       var tokens = options.onToken;