Index: Lib/mailcap.py
===================================================================
--- Lib/mailcap.py	(revision 84968)
+++ Lib/mailcap.py	(working copy)
@@ -33,10 +33,8 @@
 
 def listmailcapfiles():
     """Return a list of all mailcap files found on the system."""
-    # XXX Actually, this is Unix-specific
     if 'MAILCAPS' in os.environ:
-        str = os.environ['MAILCAPS']
-        mailcaps = str.split(':')
+        mailcaps = os.environ['MAILCAPS'].split(os.pathsep)
     else:
         if 'HOME' in os.environ:
             home = os.environ['HOME']