From a98e39374d34d3fdd205d7f3c4c53b7e92363a9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrg=20Lehni?= <juerg@scratchdisk.com>
Date: Sun, 24 Feb 2013 15:41:06 -0800
Subject: [PATCH] Make PaperScript work again with latest Acorn.js

---
 src/core/PaperScript.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/core/PaperScript.js b/src/core/PaperScript.js
index 121201a1..427d38fb 100644
--- a/src/core/PaperScript.js
+++ b/src/core/PaperScript.js
@@ -142,7 +142,9 @@ var PaperScript = this.PaperScript = new function() {
 				if (Array.isArray(value)) {
 					for (var i = 0, l = value.length; i < l; i++)
 						walkAst(value[i]);
-				} else if (Base.isPlainObject(value)) {
+				} else if (value && typeof value === 'object') {
+					// We cannot use Base.isPlainObject() for these since
+					// Acorn.js uses its own internal prototypes now.
 					walkAst(value);
 				}
 			}