Something

on *:TEXT:!public*:#: {
  if ($nick isop $chan) {
    if ($2 == off) {
      if (!$istok($readini(botinfo.ini,n,IgnoreChannel,Channels),$chan,32)) {
        writeini botinfo.ini IgnoreChannel Channels $readini(botinfo.ini,n,IgnoreChannel,Channels) $chan
        msg $chan $c2($nick,Public commands for) $c1($nick,$chan) $c2($nick,are now) $c1($nick,off) $+ $c2($nick,.)
      }
      else {
        msg $chan $c2($nick,Public commands for) $c1($nick,$chan) $c2($nick,were already off.)
      }
    }
    elseif ($2 == on) {
      if ($istok($readini(botinfo.ini,n,IgnoreChannel,Channels),$chan,32)) {
        if ($readini(botinfo.ini,n,IgnoreChannel,Channels) == $chan) {
          remini botinfo.ini IgnoreChannel
        }
        else {
          writeini botinfo.ini IgnoreChannel Channels $remtok($readini(botinfo.ini,n,IgnoreChannel,Channels),$chan,1,32)
        }
        msg $chan $c2($nick,Public commands for) $c1($nick,$chan) $c2($nick,are now) $c1($nick,on) $+ $c2($nick,.)
      }