[HarfBuzz] Hangul Shaper (was Re: an issue regarding discrepancy between Korean and Unicode standards

[Dohyun Kim]

http://ktug.org/~nomos/harfbuzz-hangul/hangulshaper.pdf

Regards,

2013/4/17 Behdad Esfahbod <behdad at behdad.org>:
> Ok, given how confusing this thread has become, please create a Google Doc,
> and write down what you think the HarfBuzz Hangul shaper should do.  Modify it
> as much as you want, but keep it as short as possible.  Please make the doc
> commentable by the public, and send the link here.
>
> Thanks,
> behdad
>
> On 13-04-16 10:10 AM, Dohyun Kim wrote:
>> 2013/4/16 Dohyun Kim <nomosnomos at gmail.com>:
>>> 2013/4/15 Dohyun Kim <nomosnomos at gmail.com>:
>>>>
>>>> The behavior of new Uniscribe is quote confusing and seems to be
>>>> inconsistant on some points.  I cannot describe concisely what it
>>>> does.  But it is evident that it renders correctly only those input
>>>> sequence which is compliant to KS X 1026-1.
>>>>
>>>
>>> OK.  My guess about the behavior of new Uniscribe:
>>>
>>> 1.  demarcate syllable blocks according to KS X 1026-1
>>>
>>>    - between L and L, V and V, T and T, or L and T (these are illegal string)
>>>    - between V and L, T and L, or M and L (these are legal break point)
>>>    - between Jamo and non-Jamo character including Hangul syllables
>>>    - but not between L and V, V and T, T and M, V and M, LVT and M, LV and M.
>>
>> Oh, I have left out one stunning thing.  I really dislike this sort of behavior:
>>
>>    - The Jamo sequence of <L V T> is divided into <L | V | T>, if
>> equivalent <LVT> syllable exists.
>>    - Likewise, <L V> sequence is divided into <L | V>, if it is not
>> followed by T and equivalent <LV> syllable exists.
>>
>>>
>>> where LVT and LV are Hangul syllables; L, V, and T are Jamos; M means
>>> Hangul tone marks (U+302E or U+302F)
>>>
>>> 2.  reorder Hangul tone marks
>>>
>>>     - if syllable block is well-formed, move M from the last to the
>>> first of the cluster.
>>>     - if syllable is not well-formed, Uniscribe does not move M.
>>> Instead, U+25CC is inserted after M.
>>>
>>> where "well-formed" means <LVT>, <LV>, <L V T>, or <L V>.
>>>
>>
>> --
>> Dohyun Kim
>> College of Law, Dongguk University
>> Seoul, Republic of Korea
>>
>
> --
> behdad
> http://behdad.org/



-- 
Dohyun Kim
College of Law, Dongguk University
Seoul, Republic of Korea