Functions (procs) and other state are not shared between interpreters. So they do need to be reinitialised in each thread. This is not hard to do though. The me

Functions (procs) and other state are not shared between interpreters. So they do need to be reinitialised in each thread. This is not hard to do though. The messages which can be passed between threads can be arbitrary scripts to be executed in the target interpreter, such as proc definitions.