Arabic support for Unicode 17.0 would be appreciated

[LornaSIL]

I don't know if Harfbuzz needs updating, or your support for Unicode 17.0 needs updating, but I'm not getting the proper rendering for an Arabic script character that was encoded in Unicode 17.0

This is the text: ࢏ ࢏࢏َ࢏

It should look like this (LibreOffice and Firefox):

In ptxPrint 3.0.38 (and 3.0.9), the characters don't shape at all:

Font Scheherazade New v4.500: https://software.sil.org/scheherazade/download/
It would be great to get this working.

[LornaSIL]

@devosb has told me "I think PTXprint is using TeX Live 2023 (on windows), so whatever version of HarfBuzz is in that version of TeX Live would not have been updated for Unicode 17."

At the encouragement of @devosb I have updated my version of TeXLive from 2025 to 2026. The above now renders correctly in XeTeX. When I do xetex --version, it says Compiled with HarfBuzz version 12.3.2; using 12.3.2

I don't know how to update my version of xetex in ptxPrint, but I suspect that's what needs updating before it will render the Unicode 17.0 characters. I hope you can do that.