From 77ffa957010fb7fe19433633223317d1147dd080 Mon Sep 17 00:00:00 2001
From: Philipp Hagemeister <phihag@phihag.de>
Date: Sun, 30 Mar 2014 07:15:14 +0200
Subject: [jsinterp] Better error messages

---
 youtube_dl/jsinterp.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/youtube_dl/jsinterp.py b/youtube_dl/jsinterp.py
index 129a4027b..449482d3c 100644
--- a/youtube_dl/jsinterp.py
+++ b/youtube_dl/jsinterp.py
@@ -99,9 +99,12 @@ class JSInterpreter(object):
 
     def extract_function(self, funcname):
         func_m = re.search(
-            r'function ' + re.escape(funcname) +
+            (r'(?:function %s|%s\s*=\s*function)' % (
+                re.escape(funcname), re.escape(funcname))) +
             r'\((?P<args>[a-z,]+)\){(?P<code>[^}]+)}',
             self.code)
+        if func_m is None:
+            raise ExtractorError('Could not find JS function %r' % funcname)
         argnames = func_m.group('args').split(',')
 
         def resf(args):
-- 
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