From 08db5463cd72d5e812d3266bc7f5c6fb0ce2fdb3 Mon Sep 17 00:00:00 2001
From: cousteau <cousteaulecommandant@users.noreply.github.com>
Date: Fri, 14 Aug 2015 20:34:02 +0200
Subject: [PATCH] Fix behavior with unavailable formatters

Turns out defaultdict and str.format(**d) don't work well together; using string.Formatter().vformat() instead.
My bad.
---
 youtube_dl/YoutubeDL.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index ef4677dd1..35931d6bc 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -17,6 +17,7 @@ import os
 import platform
 import re
 import shutil
+import string
 import subprocess
 import socket
 import sys
@@ -570,7 +571,7 @@ class YoutubeDL(object):
             tmpl = compat_expanduser(outtmpl)
             # Backwards compatibility fix (deprecated): %(foo)s -> {foo}, %% -> %
             tmpl = re.sub(r'(?<!%)((?:%)*)\1%\(([^)]*)\)s', r'\1{\2}', tmpl).replace('%%','%')
-            filename = sanitize_path(tmpl.format(**template_dict))
+            filename = sanitize_path(string.Formatter().vformat(tmpl, None, template_dict))
             # Temporary fix for #4787
             # 'Treat' all problem characters by passing filename through preferredencoding
             # to workaround encoding issues with subprocess on python2 @ Windows