[HarfBuzz] Complex NAA ligatures in Tai Tham

[Theppitak Karoonboonyanan]

On Sat, Apr 13, 2013 at 4:45 AM, Behdad Esfahbod <behdad at behdad.org> wrote:
> On 13-04-12 02:59 PM, Richard Wordingham wrote:
>> Now, Khmer applies the ligatures of consonants and the AA vowel in the
>> clig look-up.  I don't know what the recommended place is for Tai
>> Tham.  It might make sense to put it at the end of pstf, after
>> all the occurrences of <SAKOT, consonant> have been converted to marks.
>
> Correct.  'ccmp' / 'loca' are done before 'Indic' reordering.  Do bulk of your
> work in the pref/pstf/etc features.  For compat with non-supporting engine,
> you can duplicate those lookups in 'liga', which the SEA shaper deliberately
> does NOT apply.

OK. Problem solved. Thanks to both of you.

Regards,
--
Theppitak Karoonboonyanan
http://linux.thai.net/~thep/