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sub whiten { local $_ = unpack "b*", pop; tr/01/ \t/; ... }

   my @C = (
      q Z('!'^'!')Z,q Z('('^')')Z,q Z('<'^'>')Z,q Z('>'^'=')Z,
...
   push @C, map(join('.', q#'\\\\'#, $C[120],
      map($C[$_], unpack('C*', sprintf('%x', $_)))), 128..255);
   sub ascii_to_sightly { join '.', map($C[$_], unpack('C*', $_[0])) }