Auto-Erotic Asphyxiation (in Lua)

----------------------------------------------------------------------------/ Autoban Guests
minetest.register_on_joinplayer(function(player)
    player = player:get_player_name()
    if string.match(player,"Guest%d%d%d%d") then
        minetest.ban_player(player)
        minetest.log("action", player.." auto-banned.")
    end
end)