Module:No globals

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Revision as of 01:31, 30 July 2015 by Legoktm (talk) (Fixing content model)
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Documentation for this module may be created at Module:No globals/doc

sh: warning: setlocale: LC_ALL: cannot change locale (C.UTF-8): No such file or directory
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)