Random person: Do you have direct experience scripting with picolisp?
Regenaxer: Yes, the longest script I wrote until now has 990 lines and is a VI clone.
A normal person would have said "actually I wrote the damn thing and have been using it daily since last century", but Regenaxer is cool as a cucumber and focuses on the question at hand.
"Some recommendations for a lisp useful for system scripts"https://www.reddit.com/r/lisp/comments/5mxixb/comment/dcbp4ey
and also a lot of the other answers are about various forms of #scheme
so specifically that too