From 3acb64abd5bc83c0a1aac120415c24820c471655 Mon Sep 17 00:00:00 2001
From: TinyToweringTree <54483833+TinyToweringTree@users.noreply.github.com>
Date: Wed, 29 Jan 2020 08:47:05 +0100
Subject: [PATCH] [utils] Fix comment handling in js_to_json for Python <3.5

---
 youtube_dl/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 2ff23d231..bfd260a47 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -3984,7 +3984,7 @@ def js_to_json(code):
     # This regular expression is based on this Stack Overflow answer:
     #   https://stackoverflow.com/a/25735600
     code = re.sub(r'("(?:[^"\\]|\\[\s\S])*"|\'(?:[^\'\\]|\\[\s\S])*\')|[ \t]*//.*|[ \t]*/\*(?:[^*]|\*(?!/))*\*/',
-                  '\\1', code)
+                  lambda m: m.group(1) or '', code)
 
     def fix_kv(m):
         v = m.group(0)