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my $title = "​கோப்பு& +#8203;பெயர்"; open XXX, ">:encoding(UTF-8)", "c:/$title\.xml"; close (XXX);
$title = encode("UTF-16LE", "​கோப் +;பு​பெயர்"); open XXX, ">:encoding(UTF-8)", "c:/$title\.xml"; close (XXX);