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Determines whether the given globally-accessible variable is secure. A variable in this context could be any of the basic lua types such as functions or userdata.

isSecure, taint = issecurevariable([table,] "variable")


table?Optional. Could be nil. - table to check the the key in; if omitted, defaults to the globals table (_G).
string - string key to check the taint of. Numbers will be converted to a string; other types will throw an error.


boolean - true if the table[variable] key is secure, false if it is tainted.
string?Optional. Could be nil. - name of the addon that tainted the table field; an empty string if tainted by a macro; nil if secure.


  • Also returns true, nil for keys that have never been used/defined, because nothing has tainted them yet.
  • If table[variable] == nil, and table has a metatable with __index, this function will return whether the metatable's __index[varible] is tainted. You must remove the metatable to check whether table[variable] itself is tainted.
  • Cannot be used to check taint of local variables, or non-string table keys.