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16 Commits

Author SHA1 Message Date
Behdad Esfahbod 8c0aa486f3 [Indic] Allow two Nuktas per consonant 
Uniscribe allows up to two nuktas per consonant and one per matra. It does so
indepent of whether the consonant already has a nukta in it.  Tests:

        * U+0916,U+093C,U+0941
        * U+0959,U+093C,U+0941
        * U+0916,U+093C,U+093C,U+0941
        * U+0959,U+093C,U+093C,U+0941
        * U+0916,U+093C,U+093C,U+093C,U+0941
        * U+0959,U+093C,U+093C,U+093C,U+0941
        * 915,93c,93c,,94d,U+0916,U+093C,U+093C,U+093e,93c,93c
 2012-05-11 18:13:42 +02:00
Behdad Esfahbod 3399a06e70 [Indic] Fix U+0952 and similar classification to match Uniscribe 
See comments.
 2012-05-11 17:54:26 +02:00
Behdad Esfahbod ff24d1081a [Indic] Don't use syllable serial value 0 2012-05-11 17:07:08 +02:00
Behdad Esfahbod 4be46bade2 [Indic] Fix state machine to backtrack 2012-05-11 14:39:01 +02:00
Behdad Esfahbod cee7187447 [Indic] Move syllable tracking from Indic to generic layer 
This is to incorporate it into GSUB/GPOS processing.
 2012-05-11 11:41:39 +02:00
Behdad Esfahbod 86e5dd386a [Indic] Don't give up syllable parsing upon junk 2012-05-09 18:57:37 +02:00
Behdad Esfahbod ef24cc8c8e [Indic] Towards multi-cluster syllables and final reordering 2012-05-09 18:10:20 +02:00
Behdad Esfahbod 9ceca3aeb1 Fix ragel regexp in vowel-based syllable 
As reported by datao zhang on the mailing list.
 2012-04-16 21:05:51 -04:00
Behdad Esfahbod b870afcd1b Rewrite ragel expression to better match the one on MS spec 
https://www.microsoft.com/typography/otfntdev/devanot/shaping.aspx
 2012-04-16 21:05:11 -04:00
Behdad Esfahbod d4cc44716c Move code around, in prep for Thai/Lao shaper 2012-04-07 21:52:28 -04:00
Behdad Esfahbod 461b9b6347 Fix cluster formation in Indic 
Makes number of failures against Uniscribe with hi_IN dictionary from
OO.o to go down from 6334 to 4290.  Not bad for a one-line change!

Mozilla Bug 729626 - ASAN: heap-buffer-overflow HTML
 2012-03-01 18:11:19 -08:00
Behdad Esfahbod 743807a3ce [Indic] Apply Indic features 
Find the base consonant and apply basic Indic features accordingly.
Nothing complete, but does something for now.  Specifically:
no Ra handling right now, and no ZWJ/ZWNJ.

Number of failing shape-complex tests goes from 174 down to 125.

Next: reorder matras.
 2011-07-29 16:46:09 -04:00
Behdad Esfahbod 76f76812ac Shuffle code around, remove shape_plan from complex shapers 2011-07-07 22:25:25 -04:00
Behdad Esfahbod d69d5ceaa0 [Indic] Well, at least finding syllables works now :) 
Still not much there.
 2011-07-04 12:56:38 -04:00
Behdad Esfahbod c7fe56a1d5 [Indic] Some of the basic features are global; Mark them so 2011-06-24 19:05:34 -04:00
Behdad Esfahbod 867361c3ad [indic] Add syllable recognition state machine 
Using an incredible tool called Ragel.
 2011-06-17 18:35:46 -04:00