diff -r 136ab89d61cb -r 75ea27f1711d mercurial/posix.py
--- a/mercurial/posix.py	Tue Mar 31 23:30:19 2015 -0700
+++ b/mercurial/posix.py	Wed Apr 01 00:29:22 2015 -0700
@@ -311,6 +311,9 @@
 
         return encoding.upper(path)
 
+    normcasespec = encoding.normcasespecs.other
+    normcasefallback = normcase
+
     # Cygwin translates native ACLs to POSIX permissions,
     # but these translations are not supported by native
     # tools, so the exec bit tends to be set erroneously.