From 6642eae6a00165f1583347492bf3eb396e8df41b Mon Sep 17 00:00:00 2001
From: C?dric Krier <ced@b2ck.com>
Date: Fri, 15 May 2015 15:29:07 +0200
Subject: [PATCH] Fix is_leaf test

instanceof String doesn't work, we must use typeof
---
 src/common.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common.js b/src/common.js
index 800a997..b1819bb 100644
--- a/src/common.js
+++ b/src/common.js
@@ -1931,7 +1931,7 @@
         is_leaf: function(expression) {
             return ((expression instanceof Array) &&
                 (expression.length > 2) &&
-                (expression[1] instanceof String));
+                (typeof expression[1] == 'string'));
         },
         eval_leaf: function(part, context, boolop) {
             if (boolop === undefined) {