--- filelist.py 2010-10-19 11:42:08.177458300 -0700
+++ filelist.py 2010-10-19 12:03:45.204957600 -0700
@@ -347,7 +347,7 @@
         # ditch end of pattern character
         empty_pattern = glob_to_re('')
         prefix_re = (glob_to_re(prefix))[:-len(empty_pattern)]
-        pattern_re = "^" + os.path.join(prefix_re, ".*" + pattern_re)
+        pattern_re = "^" + prefix_re + re.escape(os.path.sep) + ".*" + pattern_re
     else:                               # no prefix -- respect anchor flag
         if anchor:
             pattern_re = "^" + pattern_re