Difference between revisions of "Module:No globals"

307 bytes added ,  06:48, 17 June 2018
m
Reverted changes by 126.243.104.167 (talk) to last version by Legoktm
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meta>Xiplus
m (Reverted changes by 126.243.104.167 (talk) to last version by Legoktm)
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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)
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