highlight {
  var %x = 1
  while (%x <= $nick(#,0)) {
    var %highlight = %highlight $iif(%x == $nick(#,0),and) $+($nick(#,%x),$iif(%x < $nick(#,0),$iif(%x != $calc($nick(#,0) - 1),$chr(44)),$chr(46))))
    inc %x
  }
  msg # hi %highlight
}