One problem I see is that 'undef' is an array of one element.

You should return an empty list: (). That will be treated as false by all conditionals (if unless while until).

--Stevie-O 
$"=$,,$_=q>|\p4<6 8p<M/_|<('=>
.q>.<4-KI<l|2$<6%s!<qn#F<>;$,
.=pack'N*',"@{[unpack'C*',$_]
}"for split/</;$_=$,,y[A-Z a-z]
         {}cd;print lc

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In reply to Re: sub returning undef by Stevie-O
in thread sub returning undef by Scarborough

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