--- a/mercurial/util_win32.py	Tue Nov 28 19:11:46 2006 +0100
+++ b/mercurial/util_win32.py	Tue Nov 28 21:16:05 2006 +0100
@@ -297,3 +297,5 @@
             win32file.SetEndOfFile(self.handle)
         except pywintypes.error, err:
             raise WinIOError(err)
+
+getuser_fallback = win32api.GetUserName