ToDo

Language Spec.

* package or access control for global variables
* named arguments like foo(nation:="german" or nation: "german").
* method to retrieve argument information (need new C API)
* multiple return values, yield values.  maybe imcompatible
* cascading method invocation.

Hacking Interpreter

* non-blocking open (e.g. named pipe) for thread
* avoid blocking with gethostbyname/gethostbyaddr
* objectify interpreters
* remove rb_eval() recursions
* syntax tree -> bytecode ???
* scrambled script, or script filter

Extension Libraries

* mod_ruby, FastCGI ruby
* InterBase module
* ptk.rb pTk wrapper that is compatible to tk.rb

Ruby Libraries

* CGI.rb
* httplib.rb, urllib.rb, nttplib.rb, etc.
* format like perl's

Tools

* extension library maker like XS or SWIG
* freeze or undump to bundle everything

Misc

* translate README.EXT fully into English
* publish Ruby books