findForeignLetterPrevious method

bool findForeignLetterPrevious(
  1. int index
)

Implementation

bool findForeignLetterPrevious(int index) {
  if (index < 0) return false;
  final foreign = ['w', 'f', 'k', 'K', 'c', 'z', 'H', 'R', 'L', 'Z', 'C'];
  for (int i = index; i >= 0; i--) {
    final letter = latin[i];
    if (foreign.contains(letter)) return true;
  }
  return false;
}