--- "Sukhi Venkat (TnQ)" <skvenkat at tnq.co.in> wrote: > Gora Mohanty wrote: Wed, 1 Feb 2006 06:01:05 +0000 (GMT) > > Is the specification for AAT open? Is there > > documentation available? From what little I have learnt from other > > people, > > AAT is proprietary, and poorly documented. > > > My source of knowledge: > http://en.wikipedia.org/wiki/Apple_Advanced_Typography
Yeah, but that is hardly enough to implement an AAT font, let alone a rendering engine. Nor do I see from that article a reason why this is advantageous to OpenType, something which Apple promised to support but apparently does not adequately do so. I was approached by someone who wanted to implement Indic fonts in AAT, and he uses a trial-and-error method based on copying rules from existing fonts, which is a rather laborious and error-prone method for Indic fonts. Currently, I see no reason for the open-source world to try to support AAT. [...] > The bug is actually due to a erroneous relay-effect of two > consecutive juxta-positioning that is specific to an old glyph of vowel > (ai, Unicode-BC8) which has a nice raised elephant trunk like shape (that > occurs in the word "Aanai" -meaning elephant), but this version of > the glyph which occurs with some consonants has however been phased out > in modern Tamil by rationalists (few decades back), a fact which could > be useful to fix the bug. Well, if the particular representation is still in use, the bug could be fixed. Could you submit a more complete report, including the set of Unicode input characters, a picture of the expected output, and, if possible, a picture of what you actually get from Pango, ICU, or QT? [...] > Happy to hear that Oriya is working! There are some triple-deckers in > Telugu and Kannada of Grantha origin that needs to be checked-out for > all combinations. On the whole I don't expect any major bugs in the > rendering of southern Indic scripts. It would be great if you could list these by the Unicode input sequence, and maybe someone can take a look at them. It would be even better if you would be willing to help out in putting together a comprehensive set of conjuncts, and a complete glyph repository for Tamil. Regards, Gora __________________________________________________________ Yahoo! India Matrimony: Find your partner now. Go to http://yahoo.shaadi.com
