<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'>Hi : Sorry to reply so late because I need check the font license. Unfortunately, I can't send the font to all because license issue. I also try to find some similar free font, but I can't find (the font used to test based on new tag bng2). I start to dig the issue through code now, the first case I list here is clear. For 0.9.5 version, the code look like below (hb-ot-shape-complex-indic.cc, function: initial_reordering_consonant_syllable()): ... /* Reph */ for (unsigned int i = start; i < end && info[i].indic_position() == POS_RA_TO_BECOME_REPH; i++) info[i].mask |= indic_plan->mask_array[RPHF]; /* Pre-base */ mask = indic_plan->mask_array[HALF]; for (unsigned int i = start; i < base; i++) { if (info[i].indic_category() == OT_Ra && info[i + 1].indic_category() == OT_H && i > start) { info[i].mask &= ~mask; info[i + 1].mask &= ~mask; info[i].mask |= indic_plan->mask_array[BLWF]; info[i + 1].mask |= indic_plan->mask_array[BLWF]; } else info[i].mask |= mask; } .... 0.9.14 version: /* Pre-base */ mask = indic_plan->mask_array[HALF]; for (unsigned int i = start; i < base; i++) info[i].mask |= mask; /* Base */ mask = 0; if (base < end) info[base].mask |= mask; /* Post-base */ mask = indic_plan->mask_array[BLWF] | indic_plan->mask_array[ABVF] | indic_plan->mask_array[PSTF]; for (unsigned int i = base + 1; i < end; i++) info[i].mask |= mask; From the code, we can see blwf feature never applied those consonant before base character in new version. According to MS spec: <a href="http://www.microsoft.com/typography/OpenTypeDev/bengali/intro.htm">http://www.microsoft.com/typography/OpenTypeDev/bengali/intro.htm</a>, blwf feature should be applied before half feature. so that is the reason. I will continue to dig more for other cases. Br, Dean ---------------------------------------- > Date: Mon, 6 May 2013 10:14:42 +0100 > From: jfkthame@googlemail.com > To: dataozhang@hotmail.com > CC: harfbuzz@lists.freedesktop.org > Subject: Re: [HarfBuzz] Regression test Bengali (0.9.5 VS 0.9.14) > > On 6/5/13 09:58, datao zhang wrote:> Hi all: > > > > After compare harfbuzz output (0.9.5 and 0.9.14), I find 5 main > > differences. It seems that some change are not expected. Please argue > > if you have different opinion. > > Please state exactly what font you're using, so that others can test and > reproduce your results. Thanks. > > > > > 1. স্ব্য়ং sa,virama,ba,virama,ya,nukta,anusvara > > > > In 0.9.14 version, (sa,virama,ba) not form ligature. please refer > > to attachement 1.png > > > > 2. রেকর্ডিং‌এর ra,_e,ka,ra,virama,dda,_i,anusvara,zwnj,e,ra > > > > In 0.9.14 version, the top of (_i) is too long, it should align > > with vertical stem of dda . please refer to attachement 2.png > > > > 3. আশ্র্য় aa,sha,virama,ra,virama,ya,nukta > > > > In 0.9.14 version, (sha,virama,ra) not form ligature, please refer > > to attachment 3.png > > 4. ক্রমান্ব্য়ে ka,virama,ra,ma,_aa,na,virama,ba,virama,ya,nukta,_e > > > > In 0.9.14 version, (na,virama,ba) not form ligature and the matra > > (_e) should be before (ya,nukta), after (virama). please refer to > > attachment 4.png > > > > 5. প্র্য়োজন। pa,virama,ra,virama,ya,nukta,_o,ja,na,danda > > > > In 0.9.14 version, (pa, virama,ra) not form ligature. please refer > > to attachment 5.png > > > > > > > > > > > > Br, > > Dean > > > > > > _______________________________________________ > > HarfBuzz mailing list > > HarfBuzz@lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/harfbuzz > > > </div></body> </html>