// NOTE: Multi-segment expanders are (at least up til Unicode 10) always the // beginning of a normalization segment (i.e. they are starters).
private func _compareStringsPathological( selfUTF16: UnsafeBufferPointer<UInt16>, otherUTF16: UnsafeBufferPointer<UInt16> ) -> _Ordering { var selfIterator = NormalizedIterator(selfUTF16) return selfIterator.compare(with: NormalizedIterator(otherUTF16) ) } (edited)
internal func _tryNormalize( _ input: UnsafeBufferPointer<UInt16>, into outputBuffer: UnsafeMutableBufferPointer<UInt16> ) -> Int? { var err = __swift_stdlib_U_ZERO_ERROR let count = __swift_stdlib_unorm2_normalize( _Normalization._nfcNormalizer, input.baseAddress._unsafelyUnwrappedUnchecked, numericCast(input.count), outputBuffer.baseAddress._unsafelyUnwrappedUnchecked, numericCast(outputBuffer.count), &err ) guard err.isSuccess else { // The output buffer needs to grow return nil } return numericCast(count) }