repl eats program output

taken from http://scalapuzzlers.com/#pzzlr-013

Welcome to Scala.next (pre-alpha)  (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_45).
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scala> implicit object RomanOrdering extends Ordering[RomanNumeral] {
         def compare(a: RomanNumeral, b: RomanNumeral) = a.value compare b.value
       }
defined module RomanOrdering
scala>
scala>
val numerals = SortedSet(RomanNumeral("M", 1000), RomanNumeral("C", 100), RomanNumeral("X", 10), RomanNumeral("I", 1), RomanNumeral("D", 500), RomanNumeral("L", 50),  RomanNumeral("V", 5))
numerals: scala.collection.immutable.SortedSet[RomanNumeral] = TreeSet(RomanNumeral(I,1), RomanNumeral(V,5), RomanNumeral(X,10), RomanNumeral(L,50), RomanNumeral(C,100), RomanNumeral(D,500), RomanNumeral(

scala>
scala> println("Roman numeral symbols for 1 5 10 50 100 500 1000:")
Roman numeral symbols for 1 5 10 50 100 500 1000:
scala> for (num <- numerals; sym = num.symbol) { print(s"${sym} ") }
scala> numerals map { _.symbol } foreach { sym => print(s"${sym} ") }
scala>

The numbers were printed, but then they were swallowed by repl and replaced by scala> invitation.

[allanrenucci]

I think a very simple fix would be to print a new line after a command is interpreted

[benkobalog]

Ammonite prints an additional new line after each command. It also prints a new line for commands returning Unit values.