Code:
on ^*:QUIT:{
  var %i = 1
  while ($comchan($nick, %i)) {
    echo -bfrt $v1 $e.part $space(1) 15 $address($nick,5) 14 has quit4:  ( $+ $1- $+ ) $ts2
    inc %i
  }
  haltdef
}

echo -a $signature