diff -r f66fc374d2d7 -r 8ce36dba70d1 mercurial/windows.py
--- a/mercurial/windows.py	Fri May 08 15:00:07 2015 -0700
+++ b/mercurial/windows.py	Thu May 14 11:37:36 2015 +0200
@@ -139,7 +139,7 @@
     return pconvert(os.path.normpath(path))
 
 def normcase(path):
-    return encoding.upper(path)
+    return encoding.upper(path) # NTFS compares via upper()
 
 # see posix.py for definitions
 normcasespec = encoding.normcasespecs.upper