else -> return i
    }
  }
  return endIndex
}

/**
 * Decrements [endIndex] until `input[endIndex - 1]` is not ASCII whitespace. Stops at [startIndex].
 */
internal fun String.indexOfLastNonAsciiWhitespace(
  startIndex: Int = 0,
  endIndex: Int = length,
): Int {
  for (i in endIndex - 1 downTo startIndex) {
    when (this[i]) {
      '\t', '\n', '\u000C', '\r', ' ' -> Unit
      else -> return i + 1