diff -r 803b7569c9ea -r 5fe0b880200e mercurial/windows.py
--- a/mercurial/windows.py	Sat Sep 29 02:02:35 2018 -0400
+++ b/mercurial/windows.py	Tue Sep 25 21:16:12 2018 -0400
@@ -519,6 +519,9 @@
     If gid is None, return the name of the current group."""
     return None
 
+def readlink(pathname):
+    return pycompat.fsencode(os.readlink(pycompat.fsdecode(pathname)))
+
 def removedirs(name):
     """special version of os.removedirs that does not remove symlinked
     directories or junction points if they actually contain files"""