From 1d0f19614b695aba36ad0fe0f8d3d87f68733b85 Mon Sep 17 00:00:00 2001
From: Alan Xiao <alanxiao@axcdev.com>
Date: Fri, 25 Apr 2025 10:03:02 -0400
Subject: [PATCH] Update _utils.py

Remove CLOCK$ as it is a valid filename in Win10. It was reserved in NT or older systems as referenced here: https://answers.microsoft.com/en-us/windows/forum/all/folder-names/2f9bb53a-da99-45e6-90f7-50d1399842aa. Testing on Win10 VM also shows that it's possible to create files/directories with it as a name.
---
 yt_dlp/utils/_utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/yt_dlp/utils/_utils.py b/yt_dlp/utils/_utils.py
index 4a598bfb45..99a67ba61f 100644
--- a/yt_dlp/utils/_utils.py
+++ b/yt_dlp/utils/_utils.py
@@ -168,7 +168,7 @@ def IDENTITY(x):
 NUMBER_RE = r'\d+(?:\.\d+)?'
 
 WINDOWS_RESERVED_NAMES = (
-    'CON', 'CONOUT$', 'CONIN$', 'PRN', 'AUX', 'CLOCK$', 'NUL',
+    'CON', 'CONOUT$', 'CONIN$', 'PRN', 'AUX', 'NUL',
     *tuple(f'{name:s}{num:d}' for name, num in itertools.product(('COM', 'LPT'), range(10))),
     *tuple(
         f'{name:s}{ssd:s}'