[CatMtKing]

It's disingenuous to claim a DSL is part of the language syntax. E.g. I would not consider the regex formatting specification as Python syntax. I mean, if we follow that line of thought, it's like saying Jinja is Python syntax.

[Avshalom]

If you're going to need to teach it for students to read and write programs in the wild than it's irrelevant whether it's 'part of the language syntax' or the ecosystem's syntax. 'Loop' is another one.

Lisp as an idea has a simple syntax but Common Lisp isn't even close to that platonic ideal.