Something

on *:TEXT:!blacklist*:#: {
  if ($nick ishop $chan) || ($nick isop $chan)  {
    if ($readini(blacklist.ini,$chan,$address($2,2))) { /notice $nick $2 12Is already in the blacklist
    }
    else {
      .writeini blacklist.ini $network $chan $address($2,2) $2
      /notice $nick 4 $2 12has been added to my blacklist
      ban -ku600 $chan $address($2,2)
      /notice $2 12You are now not welcome on this channel!
    }
  }
}
on *:JOIN:#: {
  if ($readini(blacklist.ini,$chan,$address($2,2))) {
    ban -ku600 $chan $nick
    /msg $chan 4 $nick 12was found in my blacklist and is not welcome on $chan
    /notice $nick 12you have received a 410 min ban 12DO NOT COME BACK you are blacklisted on this channel
  }
}
on *:TEXT:!delblack*:#: {
  if ($nick isop $chan) || ($nick ishop $chan) {
    if ($readini(blacklist.ini,$chan,$address($2,2))) {
      .remini blacklist.ini $network $chan $address($2,2) $2
      /notice $nick 4 $2 12has been removed from blacklist
      /mode $chan -b $address($2,2)
      /notice $2 12You have been unblacklisted by $nick please come back to $chan
    } 
  }
}