grammar parsers

I want to made a simple programming language, what should I use for parsing:

1. lex + yacc
2. lemon
3. parsec
4. other (what?)

>>13
scripting language on top of Common Lisp
That makes a lot more sense when the host language is unusable, like C or C++. If you find Common Lisp clunky as a command line, why don't you just write a less drastic library for the capabilities you need?