Module:Log globals

local mt = getmetatable(_G) or {}

local function print(val) if type(val) == "table" then local printout = {} local i = 1 for k, v in pairs(val) do			table.insert(printout, ("[%s] = %s"):format(tostring(k), tostring(v)) ) i = i + 1 if i > 5 then table.insert(printout, "...") break end end printout = { table.concat(printout, ", ") } table.insert(printout, 1, "{") table.insert(printout, "}") return table.concat(printout) elseif type(val) == "string" then return '"' .. val .. '"' else return tostring(val) end end

mt.__newindex = function (self, key, value) if key ~= "arg" then mw.log("Global variable " .. print(key) .. " was set to "			.. print(value) .. " somewhere:",			debug.traceback("", 2)) end return rawset(self, key, value) end

mt.__index = function (self, key) if key ~= "arg" then mw.log("Nil global variable " .. print(key) .. " was read somewhere:",			debug.traceback("", 2)) end return rawget(self, key) end

setmetatable(_G, mt)