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  1. or download this
    use 5.010;  # needs:  \gn  (*SKIP)  (*FAIL)

...
done_testing();

exit;
  2. or download this
    c:\@Work\Perl\monks\Anonymous Monk\1213014>perl only_double_letters_2.
+pl
#
...
1..38
ok 39 - no warnings
1..39