Just to point out, for those who have never heard of it, you can learn a lot about parsing, pattern matching, grammars, and term rewriting from TXL, which is de

Just to point out, for those who have never heard of it, you can learn a lot about parsing, pattern matching, grammars, and term rewriting from TXL, which is definitely a Perlis language. http://txl.ca http://txl.ca http://en.wikipedia.org/wiki/TXL_(programming_language) http://en.wikipedia.org/wiki/TXL_(programming_language)