[HarfBuzz] Fwd: Properly Rendering (Tamil-)Brahmi Short E/O

[Vinodh Rajan]

>
> There is a further issue.  Is <consonant1, sign_e, virama, consonant2>
> a correct Brahmi sequence for two syllables?


Yup. Technically, it should be two syllables <c1+sign_e+virama> &  <c2>

V

On Fri, 20 Jul 2018 at 08:07, Richard Wordingham <
richard.wordingham at ntlworld.com> wrote:

> On Fri, 20 Jul 2018 00:04:07 +0200
> Vinodh Rajan <vinodh at virtualvinodh.com> wrote:
>
> > I am not sure if this is due to HB doing incorrect clustering of
> > Brahmi syllables or just incorrect
> > OT features in my font.
>
> There is a further issue.  Is <consonant1, sign_e, virama, consonant2>
> a correct Brahmi sequence for two syllables?  I suspect this will be
> split up by HarfBuzz as <consonant1, sign_e> <U25CC_glyph, virama,
> consonant2>, as seems to happen with Tai Tham.  I'm going by my Tai
> Tham font that doesn't attempt to correct the USE, Da Lekh Seri - I am
> very rushed at the moment. This would fall foul of the combination of
> virama with a consonant that needs to happen before Indic
> rearrangement.  If the correct encoding is <consonant1, sign_e, virama,
> ZWNJ, consonant2>, then my simple hack should work well.
>
> Richard.
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