[warn] src/library/scala/util/matching/Regex.scala:62:41: Variable year undefined in comment for class Regex in class Regex
[warn]  *    case date(year, month, day) => s"$year was a good year for PLs."
[warn]                                         ^
[warn] src/library/scala/util/matching/Regex.scala:81:33: Variable year undefined in comment for class Regex in class Regex
[warn]  *    case date(year, _*) => s"$year was a good year for PLs."
[warn]                                 ^
[warn] src/library/scala/util/matching/Regex.scala:132:48: Variable d undefined in comment for class Regex in class Regex
[warn]  *    if (mi.group(1).toInt < 1960) println(s"$d: An oldie but goodie.")
[warn]                                                ^
[warn] src/library/scala/util/matching/Regex.scala:176:96: Variable c undefined in comment for class Regex in class Regex
[warn]  *  val months      = (0 to 11).map { i => val c = Calendar.getInstance; c.set(2014, i, 1); f"$c%tb" }
[warn]                                                                                                ^
[warn] src/library/scala/util/matching/Regex.scala:177:81: Variable months(m.toInt - 1) undefined in comment for class Regex in class Regex
[warn]  *  val reformatted = date.replaceAllIn(dates, _ match { case date(y,m,d) => f"${months(m.toInt - 1)} $d, $y" })
[warn]                                                                                 ^
[warn] src/library/scala/util/matching/Regex.scala:177:104: Variable d undefined in comment for class Regex in class Regex
[warn]  *  val reformatted = date.replaceAllIn(dates, _ match { case date(y,m,d) => f"${months(m.toInt - 1)} $d, $y" })
[warn]                                                                                                        ^
[warn] src/library/scala/util/matching/Regex.scala:177:108: Variable y undefined in comment for class Regex in class Regex