Fix broken cyrillic, originally written in windows-1251 (cp1251), but wrongly interpreted as valid UTF-8 and encoded as such.

fix_cp1251_encoded_as_utf8.rb

# Windows-1251 encoded as UTF-8
def decode_broken_cyrillic(s)
  offset = 848

  utf8_chars = s.chars.map do |char|
    if char.ord > 127
      [char.ord + offset].pack('U')
    else
      char
    end
  end

  utf8_chars.join('')
end

# Example - should print out the following:
# В такъв дух ви искаме! Вт акъв дух ви иск аме?
puts decode_broken_cyrillic 'Â òàêúâ äóõ âè èñêàìå! Âò àêúâ äóõ âè èñê àìå?'