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  1. or download this
        use Filter::Handle qw/subs/;
        Filter \*STDOUT, sub { "Foo: @_\n" };
        print "Bar";
        UnFilter \*STDOUT;
    
  2. or download this
    Deep recursion on subroutine "Filter::Handle::PRINT" at .../lib/Filter
    +/Handle.pm line 51.
    Segmentation fault (core dumped)
    
  3. or download this
    Not a GLOB reference at .../lib/Filter/Handle.pm line 50.
        (in cleanup) Not a GLOB reference at .../lib/Filter/Handle.pm line
    + 25 during global destruction.