<unk> in parse_hyp_and_timestamp

[RuslanSel]

In parse_hyp_and_timestamp()
after tokens = sp.id_to_piece(res.hyps[i]) I have such tokens:
▁', '', '-', 'mo', 'du', 'le',
then words = sp.decode_pieces(tokens).split() gives me two words instead of one
'⁇', '-module'
but time = parse_timestamp(tokens, time) treats these tokens like one word, and then
assert len(time) == len(words), (len(time), len(words))
AssertionError: (1, 2)

Thanks in advance.

[csukuangfj]

@yaozengwei Could you have a look?