Mine

on *:TEXT:!av*:#: {
  if ($nick isop $chan) {
    set %av [ $+ [ $chan ] ] [ $+ [ $2 ] ]
    mode $chan +v $2
    msg $chan $2 has been added to auto voice list
  }

}
on *:JOIN:#: {
  if (%av [ $+ [ $chan ] ] [ $+ [ $nick ] ] == $chan$nick) {
    mode $chan +v $nick
  }
}