Did anything ever become of the lispy language that was being built using Ion as its homoiconic syntax? I'm afraid I can't recall what it was called. Fusion maybe?
I built a system in my previous team where clients can register "filters" described in Fusion. My system, which was a source of a lot of different notifications, would then run these filters and only send those notifications that passed the filters. It became very popular very quickly because of the easy on-boarding and the fact that clients not get only a fraction of the messages they were interested in. I just checked the Java implementation, it seems to be still active and get commits.
Yeah, Fusion was the name. Last I heard, they discontinued it, saying essentially "If you really want a full Lisp, there's already Clojure." S-exps continued to be used in Ion for embedded 1-liners but they only supported a handful of operators, not a full language.
