--- a/mercurial/windows.py	Fri Dec 16 21:09:40 2011 +0900
+++ b/mercurial/windows.py	Fri Dec 16 21:09:41 2011 +0900
@@ -131,8 +131,11 @@
 def normpath(path):
     return pconvert(os.path.normpath(path))
 
+encodinglower = None
+encodingupper = None
+
 def normcase(path):
-    return path.upper()
+    return encodingupper(path)
 
 def realpath(path):
     '''