[HarfBuzz] Problem in complex indic

[datao zhang]

Hi:
 
 Problem about finding the vowel syllable:
 
      If the Indic shaper of Harfbuzz are following the OT specification of Microsoft, then the following rule in “hb-ot-shape-complex-indic-machine.rl” should be changed:
 
        vowel_syllable =      (Ra H)? V N? (z.H.c | ZWJ.c)? matra_group* syllable_tail %(found_vowel_syllable); =>
 
        vowel_syllable =      (Ra H)? V N? (z?.H.c | ZWJ.c)? matra_group* syllable_tail %(found_vowel_syllable);
 
please refer to http://www.microsoft.com/typography/otfntdev/devanot/shaping.aspx
 
Br,
Dean
  		 	   		  
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