From ebe832dc3777861fd20e38cf7588013e9df80e0e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaime=20Marqui=CC=81nez=20Ferra=CC=81ndiz?=
 <jaime.marquinez.ferrandiz@gmail.com>
Date: Thu, 24 Jul 2014 11:08:31 +0200
Subject: [PATCH] [jsinterp] 'reverse' modifies the array in place (fixes
 #3334)

---
 test/test_youtube_signature.py | 8 +++++++-
 youtube_dl/jsinterp.py         | 3 ++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/test/test_youtube_signature.py b/test/test_youtube_signature.py
index f0f33f1db..8f1afd432 100644
--- a/test/test_youtube_signature.py
+++ b/test/test_youtube_signature.py
@@ -62,7 +62,13 @@
         u'js',
         84,
         u'123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQ0STUVWXYZ!"#$%&\'()*+,@./:;<=>'
-    )
+    ),
+    (
+        u'https://s.ytimg.com/yts/jsbin/html5player-en_US-vfl9FYC6l.js',
+        u'js',
+        83,
+        u'123456789abcdefghijklmnopqr0tuvwxyzABCDETGHIJKLMNOPQRS>UVWXYZ!"#$%&\'()*+,-./:;<=F'
+    ),
 ]
 
 
diff --git a/youtube_dl/jsinterp.py b/youtube_dl/jsinterp.py
index 34e5307fa..95e6948ff 100644
--- a/youtube_dl/jsinterp.py
+++ b/youtube_dl/jsinterp.py
@@ -98,7 +98,8 @@ def interpret_expression(self, expr, local_vars, allow_recursion):
                 return argvals[0].join(obj)
             if member == 'reverse':
                 assert len(argvals) == 0
-                return obj[::-1]
+                obj.reverse()
+                return obj
             if member == 'slice':
                 assert len(argvals) == 1
                 return obj[argvals[0]:]