Mine

on *:JOIN:#Eski:{
  msg $chan 7***5 $chr(91) 7HOSTMASK5 $chr(93) $nick $+ 's hostmask is7 $address($nick,2)
  /whois $nick | set %nick $nick | set %chanul $chan
  if ($readini(clone.ini,IRCs,$address($nick,2))) {
    ban -ku60 $chan $nick 2 1 Minute Ban (Clone detected in channel)
  }
  else { writeini clone.ini IRCs $address($nick,2) $nick }
}

raw 319:*:{
  if (%chanul) {
    msg %chanul 12[7 $+ %nick $+ 12] is on4 $remove($3-,:)
    unset %chanul
  }
}

on *:PART:#Eski:{
  /remini clone.ini IRCs $address($nick,2)
}

on *:QUIT:{
  /remini clone.ini IRCs $address($nick,2)
}

on *:KICK:#Eski:{
  /remini clone.ini IRCs $address($knick,2)
}