numbered_to_accented() should add apostrophes before syllables that start with vowels. Apostrophes aren't needed with numbered pinyin (even though they probably technically should have them), but when converting to diacritic pinyin, they should definitely be there.
numbered_to_accented()should add apostrophes before syllables that start with vowels. Apostrophes aren't needed with numbered pinyin (even though they probably technically should have them), but when converting to diacritic pinyin, they should definitely be there.