I mean, I read some of the code and it looks like a Smalltalk with an sexpr syntax. But it also seems to have free-floating functions as well unbound from an object/class scope. Also seems to have a mix of class-based and prototype-based inheritance. Why do you say Tcl?

Overall I would have loved to have had this programming language available to me as a general purpose language in the 80s and early 90s.