diff -r a58f7f809fa5 -r bbb43c5b753a mercurial/match.py
--- a/mercurial/match.py	Tue Dec 17 01:16:59 2024 -0500
+++ b/mercurial/match.py	Tue Dec 17 01:18:54 2024 -0500
@@ -1736,8 +1736,7 @@
     syntax = b'relre:'
     patterns = []
 
-    fp = open(filepath, 'rb')
-    if True:
+    with open(filepath, 'rb') as fp:
         for lineno, line in enumerate(fp, start=1):
             if b"#" in line:
                 global _commentre
@@ -1779,5 +1778,5 @@
                 patterns.append((linesyntax + line, lineno, line))
             else:
                 patterns.append(linesyntax + line)
-    fp.close()
+
     return patterns