I'm not sure I'll implement this previous thing. I'm still trying to encourage writing scripts, and 4.0 will make that a whole lot easier. Like, the above match thing would translate to something like:

const UA_SOMETHING: iocaine.matcher.Substrings = iocaine.matcher.Substrings.new(
["fooBot", "blahblablah.ai"]
);

fn decision(request: Request, response: Response) {
if UA_SOMETHING.matches(request.user-agent()) {
response.tag(nsoe.scores, "something");
}
dep.nsoe.decision(request, response);
}

Or something along those lines. Yes, a bit more verbose, but not by much. And I could maybe make it a tiny bit simpler (at the cost of a runtime lookup):

const UA_SOMETHING: iocaine.matcher.Substrings = iocaine.matcher.Substrings.new(
["fooBot", "blahblablah.ai"]
);
const _ignored: () = dep.nsoe.register_header_check("user-agent")
.substrings_from(UA_SOMETHING)
.tag("something")
.score(1.0)
.register();

fn decision(request: Request, response: Response) {
dep.nsoe.decision(request, response);
}