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  1. or download this
    #!/usr/bin/perl -w
                
    ...
                
    warn "About to print";                    # primitive trace statement
    print FILE "$s";
    
  2. or download this
    Layers before binmode: unix perlio encoding(iso-8859-1) utf8
    Layers after binmode: unix perlio encoding(iso-8859-1) utf8 encoding(u
    +tf-8-strict) utf8
    Layers after reset: unix perlio encoding(utf-8-strict) utf8
    About to print at /tmp/11119633.pl line 20.