ctrlChars :: RangeSet Int
ctrlChars = foldr insertRange empty [
  (1, 32),
  (0x07f, 0x09F)
  ]
ctrlChars :: RangeSet Int
ctrlChars = foldr insertRange empty [
  (1, 32),
  (0x07f, 0x09F)
  ]
ctrlChars = foldr insertRange empty [
  (1, 32),
  (0x07f, 0x09F)
  ]