--Chat Log
minetest.register_on_chat_message(function(name, message)
    chatlog, err = io.open("chatlog.txt", "a")
    if not chatlog then
        print("Could not open chatlog.txt: " .. err)
        return
    end
    msg = "<" .. name .. "> " .. message
    chatlog:write(msg)
    chatlog:close()
end)