class Reline::Unicode

def self.vi_big_forward_end_word(line, byte_pointer)
  if (line.bytesize - 1) > byte_pointer
    size = get_next_mbchar_size(line, byte_pointer)
    mbchar = line.byteslice(byte_pointer, size)
    width = get_mbchar_width(mbchar)
    byte_size = size
  else
    return [0, 0]
  end
  while (line.bytesize - 1) > (byte_pointer + byte_size)
    size = get_next_mbchar_size(line, byte_pointer + byte_size)
    mbchar = line.byteslice(byte_pointer + byte_size, size)
    break if mbchar =~ /\S/
    width += get_mbchar_width(mbchar)
    byte_size += size
  end
  prev_width = width
  prev_byte_size = byte_size
  while line.bytesize > (byte_pointer + byte_size)
    size = get_next_mbchar_size(line, byte_pointer + byte_size)
    mbchar = line.byteslice(byte_pointer + byte_size, size)
    break if mbchar =~ /\s/
    prev_width = width
    prev_byte_size = byte_size
    width += get_mbchar_width(mbchar)
    byte_size += size
  end
  [prev_byte_size, prev_width]
end