Printing out records still isn't accurate

[Ashvin-Ranjan]

When the record spans multiple lines, the pretty-print forgets the commas (oops!):

{
  code: 400
  response: "Bad Request"
  return: <object
    <mapFrom [
      ("message", <string "400: Bad Request">),
      ("code", <number 0.0>)
    ]>
  >
}