[HarfBuzz] [BUG] commit b85800f9de8976a7418ef9df467d3080c6ab0199

[Behdad Esfahbod]

Next time, try to put a couple lines of problem description...

On 09/06/2012 10:11 PM, Harshula wrote:
> On Fri, 2012-08-31 at 16:21 -0700, Behdad Esfahbod wrote:
> 
>> commit b85800f9de8976a7418ef9df467d3080c6ab0199
>> Author: Behdad Esfahbod <behdad at behdad.org>
>> Date:   Fri Aug 31 18:12:01 2012 -0400
>>
>>     [Indic] Implement dotted-circle insertion for broken clusters
>>     
>>     No panic, we reeally insert dotted circle when it's absolutely broken.
>>     
>>     Fixes most of the dotted-circle cases against Uniscribe. (for Devanagari
>>     fixes 80% of them, for Khmer 70%; the rest look like Uniscribe being
>>     really bogus...)
>>     
>>     I had to make a decision.  Apparently Uniscribe adds one dotted circle
>>     to each broken character.  I tried that, but that goes wrong easily with
>>     split matras.  So I made it add only one dotted circle to an entire
>>     broken syllable tail.  As in: "if there was a dotted circle here, this
>>     would have formed a correct cluster."  That works better for split
>>     stuff, and I like it more.
> 
> <snip>
> 
>> --- a/src/hb-ot-shape-complex-indic-machine.rl
>> +++ b/src/hb-ot-shape-complex-indic-machine.rl
>> @@ -75,12 +75,14 @@ halant_or_matra_group = (final_halant_group | matra_group{0,4});
>>  consonant_syllable =	Repha? (cn.halant_group){0,4} cn A? halant_or_matra_group? syllable_tail;
>>  vowel_syllable =	reph? V.n? (ZWJ | (halant_group.cn){0,4} halant_or_matra_group? syllable_tail);
>>  standalone_cluster =	reph? place_holder.n? (halant_group.cn){0,4} halant_or_matra_group? syllable_tail;
>> +broken_cluster =	n? (halant_group.cn){0,4} halant_or_matra_group syllable_tail;
>>  other =			any;
> 
> reproducer string: ක්‍රා
> reproducer font: FreeSerif.ttf
> 
> Working before commit b85800f9de8976a7418ef9df467d3080c6ab0199:
> 
> FreeSerif.ttf:
> [ka_sinh=0+915|rak1.sinh=0|aa2_sinh=0+336]
> 
> lklug.hj.ttf:
> [uni0D9A.vatu=0+913|uni0DCF=0+356]
> 
> Bug after commit b85800f9de8976a7418ef9df467d3080c6ab0199:
> 
> FreeSerif.ttf:
> [ka_sinh=0+915|rak1.sinh=0|dottedcircle=0+809|aa2_sinh=0+336]
> 
> lklug.hj.ttf:
> [uni0D9A.vatu=0+913|uni0DCF=0+356]
> 
> Visible bug after commit 2bd9fe359839a653f7caae534bf768af1735f155:
> 
> FreeSerif.ttf:
> [ka_sinh=0+915|rak1.sinh=0|space=0|aa2_sinh=0+336]
> 
> lklug.hj.ttf:
> [uni0D9A.vatu=0+913|uni0DCF=0+356]
> 
> cya,
> #
> 
>