On Tue, Jun 5, 2018 at 12:58 PM, Behdad Esfahbod <[email protected]> wrote:
> Hey, > > Something I quickly spotted: > > """ > "Ra,Halant" sequences that occur elsewhere in the syllable may take on a > below-base form (called "Rakaar" in Devanagari and most other scripts, and > called "Raphala" in Bengali). > """ > > That should be Halant,Ra. > > Gah. I thought I had caught all those. Fixed now; thanks! Nate On Tue, Jun 5, 2018, 7:43 AM Nathan Willis <[email protected]> wrote: > >> Hi everyone, >> >> I've been working on a set of specification-like documents that describe >> how OpenType Layout works, specifically for shaping complex scripts. It's >> not quite complete yet, but we'd appreciate any and all feedback that the >> community can provide. >> >> The repository is here: https://github.com/n8willis/ >> opentype-shaping-documents/ >> >> As the resident README says, the starting points that we'd currently >> suggest people look at are >> >> - The Indic scripts, which you can get to from here: >> https://github.com/n8willis/opentype-shaping-documents/ >> blob/master/opentype-shaping-indic-general.md >> - The Arabic-and-related scripts (N'Ko, Syriac, Mongolian): >> https://github.com/n8willis/opentype-shaping-documents/ >> blob/master/opentype-shaping-arabic-general.md >> - Hangul: https://github.com/n8willis/opentype-shaping-documents/ >> blob/master/opentype-shaping-hangul.md >> >> A couple of the others are more-or-less complete, although I'm waiting on >> some question-loops to close with people I've privately been bugging with >> my questions. That includes Myanmar and Tibetan. >> >> I would definitely stay away from the Thai/Lao doc, which is in major >> churn, and Hebrew, which hopefully lands shortly. >> >> >> In any case, the goal here is to bridge the gap left by Microsoft's >> "Developing OpenType fonts for Script X" pages, which only offer some >> details aimed at font designers, and the OpenType/Unicode specs. >> >> It's targeting developers who have to implement script shaping. It's >> based primarily on the HarfBuzz codebase, plus whatever is known about >> Uniscribe, plus dissecting a lot of fonts. If there's anything that is >> wrong, or is unclear, or is missing, please open an issue or a PR or just >> tell me! >> >> That goes for the illustrations as well as the text; sometimes it can be >> tough to tease out an illustration that highlights one specific GSUB >> feature, when in reality they are meant to work together. >> >> Your feedback and help is appreciated! >> >> Nate >> >> -- >> nathan.p.willis >> [email protected] <http://identi.ca/n8> >> _______________________________________________ >> HarfBuzz mailing list >> [email protected] >> https://lists.freedesktop.org/mailman/listinfo/harfbuzz >> > -- nathan.p.willis 325.480.4729 [email protected] <http://identi.ca/n8>
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