Lisp interpreter

From an old interview with Richard Stallman, via comp.lang.lisp:

LinuxCare: Wasn't the LISP interpreter written using lex and yacc?

Stallman: No, absolutely not. There's no reason to use lex and yacc to write a LISP interpreter. The syntax is so simple you don't need it. You'd just be making things harder.

Oops, I never got the memo - a while back I wrote a Lisp interpreter using the venerable old tools. Now is as good a time as any to release the interpreter in the wild -- here it is.