Deeper in the MUD

So, my MUD proxy is basically good enough to use, now. I called it Urchin.

It supports triggers and aliases, at the moment. You can reload the config files while running, and thhe aliases/triggers can be self-referential (mostly).

I'm not super jazzed about the config file format. Right now it's just a text file with a lame regexable format.

What I'd really like, is the ability to include raw ocaml in the aliases so that you can do complex computations and stuff, but that will require some work to get there.