Regular Expression Processing Virtual Machines

Implementations, Google Go, of several different approaches to process regular 
expressions. These are based on Russ Cox's excellent article on the same 
subject. [1] The implementations are designed for learning and are being written
as teaching aids for a lecture I am giving at Case Western Reserve University's
Hacker Society.

[1] http://swtch.com/~rsc/regexp/regexp2.html