DB<125> @a=()

  DB<126>  @a  = (@a || ( 1..3 ));
 => (1, 2, 3)

  DB<127>  @a  = (@a || ( 4..6 ));
 => 3

##</code><code>##

  DB<138> @a=()

  DB<139> @a = (4..6) if !@a
 => (4, 5, 6)

  DB<140> @a=()

  DB<141>  @a  = @a ? @a : ( 1..6 ) ;
 => (1, 2, 3, 4, 5, 6)

  DB<142>  @a  = @a ? @a : ( 42 ) ;
 => (1, 2, 3, 4, 5, 6)

  DB<143> @a = (4..6) if !@a
 => ""

  DB<144> \@a
 => [1, 2, 3, 4, 5, 6]