[Gretl-devel] typename() with non-existent input

Hello, the help text for the (relatively recent) typename() function says:  "If the argument does not identify an object the string null is returned." - But I'm actually getting an error instead of a string output, like with all other functions (apart from exists()). Is the help text outdated or the implementation buggy? Or --as always-- am I missing something? thanks sven