So if they had included an already existing language, Perl would probably have been the best bet. Embedding Perl was (and is) painful. Tcl would have been easi

So if they had included an already existing language, Perl would probably have been the best bet. Embedding Perl was (and is) painful. Tcl would have been easier. Sandboxing would have been more difficult. Auditing all of Perl 5's operations for the possibility of escaping that sandbox is a huge task.