From 7d4111ed14848c3e72d55d47f11cd7e9fadea403 Mon Sep 17 00:00:00 2001
From: Philipp Hagemeister <phihag@phihag.de>
Date: Sun, 23 Nov 2014 10:49:19 +0100
Subject: Provide guidance when called with a YouTube ID starting with a dash.

Reported at https://news.ycombinator.com/item?id=8648121
---
 youtube_dl/compat.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'youtube_dl/compat.py')

diff --git a/youtube_dl/compat.py b/youtube_dl/compat.py
index 9d33a8ec5..549206534 100644
--- a/youtube_dl/compat.py
+++ b/youtube_dl/compat.py
@@ -3,6 +3,7 @@ from __future__ import unicode_literals
 import getpass
 import optparse
 import os
+import re
 import subprocess
 import sys
 
@@ -174,7 +175,10 @@ try:
     from shlex import quote as shlex_quote
 except ImportError:  # Python < 3.3
     def shlex_quote(s):
-        return "'" + s.replace("'", "'\"'\"'") + "'"
+        if re.match(r'^[-_\w./]+$', s):
+            return s
+        else:
+            return "'" + s.replace("'", "'\"'\"'") + "'"
 
 
 def compat_ord(c):
-- 
cgit v1.2.3