}
    i += Character.charCount(codePoint)
  }

  // Fast path: no characters in [pos..limit) required encoding.
  return substring(pos, limit)
}

internal fun Buffer.writePercentDecoded(
  encoded: String,
  pos: Int,
  limit: Int,
  plusIsSpace: Boolean,
) {
  var codePoint: Int
  var i = pos
  while (i < limit) {
    codePoint = encoded.codePointAt(i)