[HarfBuzz] hb_shape API failing for MAC default Indic MT and Sangam MN fonts

[Behdad Esfahbod]

Or try with HarfBuzz master, as I just finished implementing morx/kerx last
night. ;)

On Thu, Oct 11, 2018 at 7:14 AM, Muthu Nedumaran <fontwork at murasu.com>
wrote:

> The MN fonts prior to macOS Mojave do not include OpenType tables.  They
> only had AAT.  Try it on Mojave.
>
> ~ MUTHU
>
> On 11Oct, 2018, at 6:09 PM, Vijendra Singh <visingh at quark.com> wrote:
>
> Hi All,
>
> I am using Harfbuzz 1.7.6 for Indic languages in my application but failed
> to get correct result from hb_shape API for all MAC default Indic MT and MN
> fonts like- Devanagari MT and Devanagari Sangam MN fonts.
>
> e.g- Input buffer is-
>    प+त+्+र+क+ा+र   द+ि+स+ं+ब+र   स+े  म+य+ा+ं+म+ा+र
>
> Resulting output is-
> <image001.png>
>
> whereas it should be like-
>      पत्रकार दिसंबर से मयांमार
>
> It seems that issue is in glyph substitution and glyph positioning.
> Similar issue is also in Chrome if we render the above text with these
> fonts but it is rendering fine in application like- MAC TextEdit and
> Safari with these fonts.
>
> Kindly suggest whether the issue is in hb_shape API or in the fonts or I
> have to do something at my end to get desire result.
>
> Thanks,
> Vijendra Singh
>
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-- 
behdad
http://behdad.org/
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