Since then, I've been programming commercially in Scheme, then Common Lisp, for a number of years.
My computing experience covers interpreters and compilers, Artificial Intelligence, Speech Processing, Telecommunications, document processing and a few other things. Mainly R&D and systems programming.
I have recently developed and released my own Lisp dialect and environment (Emblem), as the substrate of a completely new language system (Full Metal Jacket) which I am developing. I presented a paper on this at the International Lisp Conference 2003.
Most of my non-Lisping is in C. I also have significant experience in Bash, Prolog, Pascal, Java, and various assembly languages.