Already over two years ago, using GPT4, I experimented with code generation using a relatively unknown dialect of Lisp for which there are few online materials or discussions. Yet, the results were good. The LLM slightly hallucinated between that dialect and Scheme and Common Lisp, but corrected itself when instructed clearly. When given a verbal description of a macro that is available in the dialect, it was able to refactor the code to take advantage of it.