[HarfBuzz] application of hangul *jmo features to broken syllables

[Behdad Esfahbod]

Jonathan,

Also, since you seem to be digging this, can you please put a test file
together of all the various syllable structures (old and new, precomposed,
decomposed, and half-composed), with and without tone marks / L/V placeholders?

Cheers,
behdad

On 14-01-06 10:44 PM, Jonathan Kew wrote:
> The Hangul shaper should NOT apply the *jmo features to glyphs that are not
> part of a properly-structured Korean syllable.
> 
> Some examples of current behavior:
> 
> [GOOD: complete LVT sequence, proper features applied]
> hb-unicode-encode 1101,1161,11f0 | hb-shape UnBatang_0613.ttf
> [uni1101.ljmo01=0+1024|uni1161.vjmo01=1+0|uni11F0.tjmo01=2+0]
> 
> [GOOD: lone L does not have features applied]
> hb-unicode-encode 1101 | hb-shape UnBatang_0613.ttf
> [uni1101=0+1024]
> 
> [GOOD: LT without V is not valid, don't apply features]
> hb-unicode-encode 1101,11f0 | hb-shape UnBatang_0613.ttf
> [uni1101=0+1024|uni11F0=1+0]
> 
> [GOOD: lone T, don't apply features]
> hb-unicode-encode 11f0 | hb-shape UnBatang_0613.ttf
> [uni11F0=0+0]
> 
> [BAD: lone V, shouldn't apply vjmo]
> hb-unicode-encode 1161 | hb-shape UnBatang_0613.ttf
> [uni1161.vjmo02=0+0]
> 
> [BAD: VT pair without L is not valid, shouldn't apply *jmo]
> hb-unicode-encode 1161,11f0 | hb-shape UnBatang_0613.ttf
> [uni1161.vjmo01=0+0|uni11F0.tjmo01=1+0]
> 
> Note the last two examples; these are incorrect, IMO. In both these cases,
> Uniscribe does not apply the *jmo features.
> 
> JK
> 

-- 
behdad
http://behdad.org/