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fun String.toRegex(): Regex {
    return Regex(Pattern.compile(this))
}

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fun String.toRegex() =
  Regex(Pattern.compile(this))

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// Two backslashes
"""\\p{InLatin}{4,}"""

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// One backslash
"""\p{InLatin}{4,}"""

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\p{IsLatin}(\p{IsLatin})\1*(?!\1)\p{IsLatin}\p{IsLatin}+

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// Examine text looking for matches
WORD_REGEX.matcher(text).results()
  .forEach(match -> {
    // Second letter
    final var start = match.start() + 1;
    // Penultimate letter
    final var end = match.end() - 1;
    final var length = end - start;
    // ... shuffling stuff ...
  }

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// Examine text looking for matches
WORD_REGEX.findAll(text)
  .forEach { match ->
    // Define range of inner letters
    val range: IntRange =
      match.range.first + 1
        until match.range.last
    // ... shuffling stuff ...
  }

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// Shuffle inner letter array
for (var i = start; i < end; i++) {
  // Choose a random index in region
  final var rndIdx =
    start + random.nextInt(length);
  // Swap current/random chars
  final var save = result[rndIdx];
  result[rndIdx] = result[i];
  result[i] = save;
}

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// Shuffle inner letter array
for (i in range) {
  // Choose a random index in region
  val rndIdx: Int = range.random()
  // Swap current/random chars
  result[rndIdx] = result[i].also {
    result[i] = result[rndIdx]
  }
}

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// Java
do {
  // ... shuffling stuff...
  // Ensure shuffling took place!
  } while(IntStream.range(start, end)
      .allMatch(i ->
        result[i] == text.charAt(i)
  }));