[HarfBuzz] A problem in thai shaper
behdad at behdad.org
Mon Apr 16 18:08:49 PDT 2012
Thanks for the email. My comments inline.
On 04/13/2012 09:41 AM, datao zhang wrote
> So I think for the new Thai shaper, the valid composition of “consonant [1
> mandatory]+ diacritic vowel [1 optional] + tone mark [1 optional] “ should be
> set as same cluster.
I would guess that our generic layer will already take care of this based on
canonical combining categories? Do you have a test case that you want to see
> Problem 2:
> When there is no consonant exist, the dotted circle should be inserted as base
> character. The logic should be the first step for the shaping engine to find
> the invalid combing marks. Refer to
Right. We do not handle invalid combining marks yet. That's something I want
to do at some point but it's not high priority.
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