--- a/mercurial/pathutil.py	Wed Dec 20 20:13:22 2023 +0100
+++ b/mercurial/pathutil.py	Tue Dec 19 21:29:34 2023 +0100
@@ -32,8 +32,7 @@
 ]
 
 
-def _lowerclean(s):
-    # type: (bytes) -> bytes
+def _lowerclean(s: bytes) -> bytes:
     return encoding.hfsignoreclean(s.lower())
 
 
@@ -72,8 +71,7 @@
         else:
             self.normcase = lambda x: x
 
-    def __call__(self, path, mode=None):
-        # type: (bytes, Optional[Any]) -> None
+    def __call__(self, path: bytes, mode: Optional[Any] = None) -> None:
         """Check the relative path.
         path may contain a pattern (e.g. foodir/**.txt)"""
 
@@ -170,8 +168,7 @@
                     raise error.Abort(msg % (path, pycompat.bytestr(prefix)))
         return True
 
-    def check(self, path):
-        # type: (bytes) -> bool
+    def check(self, path: bytes) -> bool:
         try:
             self(path)
             return True
@@ -192,8 +189,12 @@
                 self._cached = False
 
 
-def canonpath(root, cwd, myname, auditor=None):
-    # type: (bytes, bytes, bytes, Optional[pathauditor]) -> bytes
+def canonpath(
+    root: bytes,
+    cwd: bytes,
+    myname: bytes,
+    auditor: Optional[pathauditor] = None,
+) -> bytes:
     """return the canonical path of myname, given cwd and root
 
     >>> def check(root, cwd, myname):
@@ -295,8 +296,7 @@
         )
 
 
-def normasprefix(path):
-    # type: (bytes) -> bytes
+def normasprefix(path: bytes) -> bytes:
     """normalize the specified path as path prefix
 
     Returned value can be used safely for "p.startswith(prefix)",
@@ -319,8 +319,7 @@
         return path
 
 
-def finddirs(path):
-    # type: (bytes) -> Iterator[bytes]
+def finddirs(path: bytes) -> Iterator[bytes]:
     pos = path.rfind(b'/')
     while pos != -1:
         yield path[:pos]
@@ -355,8 +354,7 @@
             for f in map:
                 addpath(f)
 
-    def addpath(self, path):
-        # type: (bytes) -> None
+    def addpath(self, path: bytes) -> None:
         dirs = self._dirs
         for base in finddirs(path):
             if base.endswith(b'/'):
@@ -368,8 +366,7 @@
                 return
             dirs[base] = 1
 
-    def delpath(self, path):
-        # type: (bytes) -> None
+    def delpath(self, path: bytes) -> None:
         dirs = self._dirs
         for base in finddirs(path):
             if dirs[base] > 1:
@@ -380,8 +377,7 @@
     def __iter__(self):
         return iter(self._dirs)
 
-    def __contains__(self, d):
-        # type: (bytes) -> bool
+    def __contains__(self, d: bytes) -> bool:
         return d in self._dirs