Someone

on *:TEXT:!setgreet*:#: { 
  set %nickgreet [ $+ [ $address($nick,2) ] ] $2- 
  notice $nick Your greet has now been set to: $2- 
}
on *:TEXT:!delgreet*:#: { 
  unset %nickgreet [ $+ [ $nick ] ]
  notice $nick Your greet has now been deleted 
}
on *:JOIN:#: { 
  if (%nickgreet [ $+ [ $address($nick,2) ] ]) {
    msg # $chr(91) $+ $nick $+ $chr(93) %nickgreet [ $+ [ $address($nick,2) ] ]
  }
}