[Denzel]

What you said and what I said are in agreeement, so I'm not sure I follow. "Program stored in memory in the same form in which the user enters it" makes it isomorphic. Which was exactly the point I was trying to make in response to the parent comment.

You cannot simply expose the compiler/AST data structure and call your language homoiconic because the text the user enters and the resulting AST are not isomorphic which is a necessary precondition for homoiconicism.

I may be missing something in what you said though, so please do let me know.