47:         my($npath) = unixify($path);
  DB<7> x $path
0  '[DIR.aaaaa]'
  DB<8> s
File::Spec::VMS::eliminate_macros(/perl_root/lib/File/Spec/VMS.pm:48):
48:         my($complex) = 0;
  DB<8> x $npath
0  "/USERS/DIR/aaaaa\c@"     # <---- What's that \c@ doing there?!