Stuff

on *:TEXT:!part*:#: {
  if ($2 == $me) {
    if ($nick isop $chan) {
      if ($nick($chan,0) >= 5 && runescript !ison $chan) { part $chan requested by $nick
      }
      else goto stay
    }
    else goto stay
  }
  :stay
  notice $nick sorry but either you are not an op or there are 5 or less in the channel and runescript is in the channel and if I leave runescript will part as well.
}