Yeah, John likes it but he's not sure if it will take off or not. We haven't merged to tip with the tcl tree and we have some issues to resolve: - not thread

Yeah, John likes it but he's not sure if it will take off or not. We haven't merged to tip with the tcl tree and we have some issues to resolve: - not thread safe, it assumes one tcl thread - we stole a bit from the ref count integer to implement "undef" and the tcl core isn't thrilled with that - we default to pcre (but have the old stuff for compat, you can switch at run time) - we broke a bunch of tests (mostly pcre related)