[HarfBuzz] HarfBuzz shaping of R2L text

[Richard Wordingham]

On Wed, 29 May 2019 22:32:12 +0300
Eli Zaretskii <eliz at gnu.org> wrote:


> Can you show an example of such a situation and what is expected from
> the correct shaping and display?  I could then see what happens in
> Emacs.

The attached files shows a rendering of <U+1A20 TAI THAM LETTER HIGH
KA, U+1A6E TAI THAM VOWEL SIGN E, U+1A63 TAI THAM VOWEL SIGN AA>; one
could equally well use <U+1000 MYANMAR LETTER KA, U+1031, U+102C>.  The
visual order (in the direction of the script, from left to right) is
<SIGN E, LETTER...KA, SIGN AA>. 

Richard.
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