模块:No globals

此模块的文档可以在模块:No globals/doc创建

脚本错误：Lua错误：无法创建进程：proc_open(/dev/null): Failed to open stream: Operation not permitted

local mt = getmetatable(_G) or {}
function mt.__index (t, k)
	if k ~= 'arg' then
		error('Tried to read nil global ' .. tostring(k), 2)
	end
	return nil
end
function mt.__newindex(t, k, v)
	if k ~= 'arg' then
		error('Tried to write global ' .. tostring(k), 2)
	end
	rawset(t, k, v)
end
setmetatable(_G, mt)