Just a simple console session:
>> "Zażółć"[0,3] => "Za\305" >> "Zażółć"[0,4] => "Zaż" >> "Zażółć".length => 10
OK, it quite works with Chars class:
>> "Zażółć".chars[0,3].to_s => "Zaż" >> "Zażółć".chars[0,4].to_s => "Zażó" >> "Zażółć".chars.length => 6
Not the most elegant solution, but works.
