A mini Lisp in 1k lines of C with Cheney's copying garbage collector, explained. Includes over 40 built-in Lisp primitives, floating point, strings, closures with lexical scope, macros, proper tail recursion, exceptions, execution tracing, file loading, a copying garbage collector and REPL.
Why do you think that https://github.com/Robert-van-Engelen/tinylisp is a good alternative to lisp-cheney