1 files changed, 7 insertions, 0 deletions
diff --git a/sphinx/util/osutil.py b/sphinx/util/osutil.py
index 840655e42..d0ed42c8c 100644
--- a/sphinx/util/osutil.py
+++ b/sphinx/util/osutil.py
@@ -6,6 +6,7 @@ import os
 import re
 import shutil
 import sys
+import unicodedata
 from io import StringIO
 from os import path
 from typing import Any, Generator, Iterator, List, Optional, Type
@@ -34,6 +35,12 @@ def canon_path(nativepath: str) -> str:
     return nativepath.replace(path.sep, SEP)
 
 
+def path_stabilize(filepath: str) -> str:
+    "Normalize path separator and unicode string"
+    new_path = canon_path(filepath)
+    return unicodedata.normalize('NFC', new_path)
+
+
 def relative_uri(base: str, to: str) -> str:
     """Return a relative URL from ``base`` to ``to``."""
     if to.startswith(SEP):