;;;; A node the macro built has no line; the leaves it built it from keep
;;;; theirs.
;;;;
;;;; flip does not splice a body, it assembles a new list out of its two
;;;; arguments. That list is the macro's own -- it is reported at the call --
;;;; while nosuchname inside it is the author's form, spliced through
;;;; untouched, and is reported where it is written.
(defmacro flip [a b]
  `(~b ~a))

(defn g [x i32] i32 x)

(defn main [] i32
  (flip
    nosuchname
    g)
  0)