fold((accu: Int, n: Int) =>
           if (invalid(0, x, y, (n + 48).toChar)) accu else {
             m(y)(x) = (n + 48).toChar;
             val newaccu = search(x + 1, y, f, accu);
             m(y)(x) = '0';
             newaccu}, accu, 1, 10)}

-              // For some region prefixes (COLONeol, EQUALS) only OUTDENT if COMMA at EOL
-              if canStartIndentTokens.contains(r.prefix) && !statCtdTokens.contains(r.prefix) then
+              // For region prefix COLONeol, only OUTDENT if COMMA at EOL
+              if r.prefix == COLONeol then

  def applyLens[A, B](k: B => A)(implicit e: Equal[A]): Store[A, B] @> B =
    lens(q => {
      val x = Need(q.pos)
      val y = Need(q put x.value)
      Store(b =>
        Store(w => if(e.equal(x.value, w)) b else y.value, x.value), y.value)
    })