Handle correct accent mark placed over wrong vowel

[1ec5]

From [email protected] on 2008-08-16T00:27:49Z

Examples of words in which the user entered the correct accent marks, but
at least one of them appears over the wrong vowel:

1. nứơc (expected: nước; suggested: nức)
2. tóan (expected: toán; suggested: tan, than, toan, tó an)
3. tâỷ (expected: tẩy; suggested: tâm, tân, tây, tâu, trâm) -- this is hard

Original issue: http://code.google.com/p/hunspell-spellcheck-vi/issues/detail?id=8

[1ec5]

From [email protected] on 2008-08-16T00:50:50Z

Apparently the suggestions were improved in r42 and r45 , but only for the new-style
dictionary. Under the new-style dictionary:

1. nứơc (expected: nước; suggested: nức)
2. tóan (expected: toán; suggested: toán, tân, than, toan, tó an)
3. tâỷ (expected: tẩy; suggested: tâm, tân, tây, tâu, tuỷ)

#2 now suggests the best word first.

[1ec5]

From [email protected] on 2008-08-16T00:51:16Z

Status: Started

[1ec5]

From [email protected] on 2010-09-24T09:35:53Z

With r101 and Firefox 4.0b6, we get the following:

1. nứơc (expected: nước; suggested: nuốc, nuộc, nước, nược, nức) – 3rd place
2. tóan (expected: toán; suggested: toan, toàn, toản, toán, tan) – 4th place
3. tâỷ (expected: tẩy; suggested: tay, tày, táy, tây, tầy) – not suggested

With r102 and Firefox 4.0b6, we get the following:

1. nứơc (expected: nước; suggested: nước, nược, nuốc, nuộc, nức) – 1st place
2. tóan (expected: toán; suggested: toan, toàn, toản, toán, tan) – 4th place
3. tâỷ (expected: tẩy; suggested: tây, tầy, tẩy, tấy, tay) – 3rd place