Lisp::String for strings while numbers are plain scalars.  This might
also be an Lisp::Reader option.

Implement conditional special forms.

Implement macros.

Pretty-Printer version of Lisp::Printer::print

Reading '#<...>' is an error

Full character recognition ?^c ?\M-a ?\C-M-a (also in strings)

Figure out how to call perl builtins in array context from Lisp.

Complete binding of perl builtins.

Tie some symbols to perl variables.  (setq _ 10)

() and nil represented as undef ??

Documentation
