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  1. or download this
    use absolutify;
    use English qw( -no_match_vars );
    use Readonly qw( Readonly );
    Readonly my $FOO => 12345;
    print "foo: $FOO\nprogram: $PROGRAM_NAME\n";
    
  2. or download this
    use absolutify;
    use English ();
    use Readonly ();
    Readonly::Readonly my $FOO => 12345;
    print "foo: $FOO\nprogram: $English::PROGRAM_NAME\n";
    
  3. or download this
    package absolutify;
    
    use Filter::Simple;
    ...
    }
    
    1;