Someone

on *:join:#: {
  %ial = $ialchan($address($nick,2),$chan,0)
  var %nick = $ialchan($address($nick,2),$chan,1)
  var %nick2 = $ialchan($address($nick,2),$chan,2)
  if (%ial > 1) {
    echo $chan $timestamp2 %in $+ $nick could be a clone ( $+ %nick / %nick2 $+ ) $+ %out
    return
  }
}