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  1. or download this
    $ perl -Mv5.14 -e'use utf8; sub fée { }'

$ perl -Mv5.14 -e'no utf8; sub fée { }'
Illegal declaration of subroutine main::f at -e line 1.
  2. or download this
    $ perl -Mv5.14 -e'
   binmode STDOUT, ":encoding(UTF-8)";
...
' | od -t x1
0000000 c3 a9 0a
0000003