14,061
edits
(add) |
(add) |
||
(One intermediate revision by the same user not shown) | |||
Line 1: | Line 1: | ||
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) |