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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.