;;;; print and println are variadic with Clojure's spacing: every argument
;;;; prints in order, a single space between each pair, println ending the
;;;; line. (println) alone is the newline; (print) alone is nothing.
;;;;
;;;; What the pins are for. The one-argument lines must be byte-identical to
;;;; what they printed before the forms went variadic — no trailing space is
;;;; the thing an eye cannot see in a diff, so every print line ends in a "|"
;;;; marker that would move if a space leaked. And the arguments are typed and
;;;; dyn in the same call: each gets the walk it would get alone, the typed
;;;; ones selected at check time and the dyn ones handed to the runtime, so
;;;; the interleaving on one line is what proves the two sinks share a buffer.

(defonce boxed dyn 21)
(defonce dlabel dyn "mid")

(defn main [] ()
  ;; println at every arity
  (println)                              ; bare newline
  (println "one")                        ; the old single-argument form, unchanged
  (println "a" "b")
  (println "x:" 5 true)
  ;; mixed machine types in one call
  (println 1 2.5 "s" false)
  ;; dyn and typed in the same call, dyn in the middle
  (println "pre" boxed "post")
  (println dlabel 7)
  ;; print: zero args is nothing, and no separator ever trails
  (print)
  (print "|")
  (print "p")
  (print "|")
  (print "q" "r" 3)
  (println "|"))