normalize paths via normcase() before comparing or adding to seen set.

moonsikpark · moonsikpark · commit 1f8656ec692b · 2024-03-19T13:51:41.000+09:00
diff --git a/Lib/ntpath.py b/Lib/ntpath.py
@@ -709,7 +709,7 @@ def _getfinalpathname_nonstrict(path):
                 try:
                     # The OS could not resolve this path fully, so we attempt
                     # to follow the link ourselves. If we succeed, keep running the loop.
-                    new_path = _readlink_deep(path, seen)
+                    new_path = normcase(_readlink_deep(path, seen))
                     if new_path in seen:
                         return join(new_path, tail) if tail else new_path
                     else:
