In the following code example when one tries to import the Regex type

object X

class Y {

  ")"

  val r: Regex
}

this is the result:

import scala.util.matching.Regex

object X

(class Y {

  ")"

  val r: Regex
}

This problem occurs only in a very specific situation. Not only there needs to be a closing parenthesis in a string after the definition of the class, there also has to be another definition between the class and the point where the import is added, in this case it is a simple object definition (comments/other imports don't seem to be a problem).

Another problem, which is probably related to this, occurs when the string with the parentheses is before the class definition:

object X

")"

class Y {

  val r: Regex
}

In this case it is a compilation error anyway, but the result is even more awkward:

import scala.util.matching.Regex

object X

"

"

class Y {

  val r: Regex
}

object DummyObject
 
class WrongFormatting {
  def importHere = LinkedHashSet("(")
  ()
}

import scala.collection.mutable.LinkedHashSet

object DummyObject
 
class WrongFormatting {
  def importHere = LinkedHashSet("(")
  ())
}

import java.lang.String

object O1

trait Bug1 {
  ")"
}

import java.lang.String

object Bug2 {
  ")"
}

object O2

object X

")"

class Y {

  val r: Regex
}