"patch" is actually a Unix command, it comes standard with Unix. So you'd type "patch <mz.patch" in your Unix shell, inside your arc directory.
If you're running Windows, if I remember correctly patch comes with cygwin... though I'm not sure.
If you look at mz.patch you can see that it is merely adding one line to ac.scm, so if all else fails, you can edit ac.scm and add the line yourself :-)
mz.patch is a patch against pg's original arc2... I have no idea if it will work with Anarki or not.
As a note for other n00bs who want to use the mz patch on anarki, it's probably best to just manually add the one line to the ac.scm file. Running the patch will fail with an error "patch already detected". I'm no unix expert but I looked at the anarki verion and there's already extra lines added where the patch expects to place it's code line(And the "add anyway" unix prompt failed for me).
At any rate I'm now playing with your json library CatDancer. Thanks for the help along the way.
T.
I have no idea why I used ((mz integer?) v) instead of (isa v 'int) in json.arc, it sounds like it would have saved you some trouble if you hadn't needed to install the mz patch first.
