functionsince v0.0-3255 clojure.pprint/pprint-newlineEdit
(pprint-newline kind)

Source docstring:
Print a conditional newline to a pretty printing stream. kind specifies if the
newline is :linear, :miser, :fill, or :mandatory.

This function is intended for use when writing custom dispatch functions.

Output is sent to *out* which must be a pretty printing writer.
Source code @ clojurescript:src/main/cljs/cljs/pprint.cljs
(defn pprint-newline
  (check-enumerated-arg kind #{:linear :miser :fill :mandatory})
  (nl *out* kind))