in reply to Sort undef
Surprised nobody's suggested the Schwartzian transform on this one. Combined with marinersk's sentinel technique, it's a nice, simple, efficient solution.
@$ResultsFinal = map { $_->[1] } sort { $a->[0] cmp $b->[0] } map { [deaccent($_->[$OptOrderToDisplayTable]) // chr(255), $_] } @$ResultsFinal;
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