Module:No globals

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Template:Being deleted

The functionality this module provides was added to Scribunto itself (see T209310) and should now be used as Template:Ml-lua.

See also

• Module:Log globals – adds all nil global reads/writes to the Lua log

The above documentation is transcluded from Module:No globals/doc. (edit | history)
Editors can experiment in this module's sandbox (create | mirror) and testcases (create) pages.
Subpages of this module.

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)