From d1b5f70bc9f9dcda1544b88b42ecc25f7f7aa1c7 Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Wed, 9 Mar 2022 01:33:31 +0530
Subject: [cleanup] Refactor `__init__.py` (#2570)

* Split `__init__` code into multiple functions
* Clean up validation code by grouping similar types of options
* Expose `parse_options` to third parties
---
 yt_dlp/utils.py | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'yt_dlp/utils.py')

diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index d2a9303c7..10a9a72ff 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -3603,6 +3603,9 @@ def match_str(filter_str, dct, incomplete=False):
 
 
 def match_filter_func(filter_str):
+    if filter_str is None:
+        return None
+
     def _match_func(info_dict, *args, **kwargs):
         if match_str(filter_str, info_dict, *args, **kwargs):
             return None
-- 
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