repl breaks multiple val definiton syntax`

[DarkDimius]

taken from: http://scalapuzzlers.com/#pzzlr-017

class C
val x1,x2 = new C
val y1@y2 = new C
println(x1 == x2)
println(y1 == y2)

This code works in dotc, but does not work in repl:

scala> val x1,x2 = new C
scala> val y1@y2 = new C
scala> println(x1 == x2)
        ^
println(x1 == x2)
<console>:8: error: not found: x1