function handleMUCMessage(msg)
	print(tostring(getmetatable(msg.room).__index), tostring(mt), tostring(mt.roomhandle), tostring(mt.roomhandle.send));
	local command, param = msg.body:match("^!([%a%-%_]+)%s?(.*)$");
	if msg.ishistory then return; end
	if not rooms[msg.room] then print("Huh? Not in this room..."); end
	if command and type(commands[command]) == "function" then
		local ret = commands[command](msg, param);
		if type(ret) == "string" then
			if #ret < 512 then
				msg.room:send(ret); -- SendMUCMessage(msg.room, ret);
			else
				msg.room:send("[Too long]");
			end
		end
	elseif command and type(sandbox[command]) == "function" then
		local is_admin = IsFromBotAdmin(msg);
		local success, result = eval(string.format("sandbox[%q](%q);",command, param) , { allow_functions = false, data = { room = is_admin and setmetatable({}, { __index = rooms[msg.room], __newindex = function () error("Sorry, the room info is read-only"); end}) } });
		msg.room:send(result);
	elseif command and type(sandbox[command]) ~= "table" and type(sandbox[command]) ~= "function" and type(sandbox[command]) ~= "userdata" then
		msg.room:send(tostring(sandbox[command]));
	elseif msg.nick ~= rooms[msg.room].mynick then
		local ret = MatchPattern(msg);
		if ret then SendMUCMessage(msg.room, ret); end
	end
end