Github user liancheng commented on the pull request:
https://github.com/apache/spark/pull/11931#issuecomment-200812076
@cloud-fan ASCII code of `CTRL-D` is 4. I tried to add a dummy test case in
`ReplSuite` as follows and it works:
```scala
test("foo") {
val output = runInterpreter("local",
""":paste
|val a = 1
|println(a)
""".stripMargin + 4.toChar.toString
)
println(
s"""###################
|$output
|###################
""".stripMargin)
}
```
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