This should be fine and produce the literal list (quasiquote ((unquote a))). Currently, the quasiquoting engine doesn't understand nesting, so the outer quasiquote tries to evaluate the thing inside the inner comma.
Adding blocks-bootstrapping tag. We can technically work around it, but the macros get a lot easier to write if we don't have to worry about this issue.
Oh boy.
This should be fine and produce the literal list
(quasiquote ((unquote a)))
. Currently, the quasiquoting engine doesn't understand nesting, so the outer quasiquote tries to evaluate the thing inside the inner comma.