If you don't want that comma, you can do without the cases: 
sub list {
    join ", " => @_ [0 .. $#_ - 2],
                 join " and " => @_ [grep {$_ >= 0} $#_ - 1, $#_]
}

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Abigail

In reply to Re: Format a list with commas and by Abigail-II
in thread Format a list with commas and "and" by merlyn

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