DB<102> scalar (a..d)
 => "1E0"

  DB<103> sub tst {a..d}

  DB<104> tst()
 => ("a", "b", "c", "d")

  DB<105> scalar tst()
 => "1E0"

  DB<106> scalar ("a", "b", "c", "d")
 => "d"

  DB<107> sub tst { @{[a..d]} }

  DB<108> scalar tst()
 => 4