microsoft / font-tools

Font tools to support development of OpenType fonts.
MIT License
57 stars 14 forks source link

USE override for Tulu-Tigalari #17

Closed NorbertLindenberg closed 1 day ago

NorbertLindenberg commented 2 years ago

The UTC has approved proposal L2/22-031 to encode the Tulu-Tigalari script in a future version of the Unicode Standard. Pages 22-23 of the proposal discuss the need to override the Indic syllabic category of the Tulu-Tigalari Virama with the value Bindu.

Please implement that override when the future version arrives.

virtualvinodh commented 1 year ago

This also includes an override for Tulu-Tigalari Virama as explained on page 24.

We suggest a USE override for the Looped Virama by assigning it the value of 'Consonant Modifier'.

V

xadxura commented 2 weeks ago

@virtualvinodh, @NorbertLindenberg is the following what you expect?:

113CE ; Bindu # Mn TULU-TIGALARI SIGN VIRAMA 113CF ; Nukta # Mc TULU-TIGALARI SIGN LOOPED VIRAMA

NorbertLindenberg commented 1 week ago

Looks like what Dr Vinodh prescribed.

NorbertLindenberg commented 2 days ago

Turns out that the override for 113CF doesn't work: It creates a CONS_MOD with InPC=Right, which the USE doesn't support. Tulu-Tigalari already has a CONS_MOD with InPC=Bottom, 113D2, so just overriding 113CF with that value doesn't work either.