> +compile

$ copy-file changes/A2.scala src/main/scala/A.scala
-> +compile

$ copy-file changes/B3.scala src/main/scala/B.scala
> +compile

$ delete src/main/scala/B.scala
-> +compile

$ copy-file changes/B3.scala src/main/scala/B.scala
> +compile

$ copy-file changes/B4.scala src/main/scala/B.scala
-> +compile

$ copy-file changes/B3.scala src/main/scala/B.scala
> +compile

$ copy-file changes/B5.scala src/main/scala/B.scala
-> +compile

$ copy-file changes/B3.scala src/main/scala/B.scala
> +compile