Re: [HarfBuzz] script segmentation

2018-02-15 Thread Martin Hosken
Dear Richard, I would reply to my own message, but that never comes back to me. Thank you (NOT) Google. So here goes. I've started a discussion document here: https://github.com/OpenType/opentype-layout/blob/master/docs/script_segmentation.md. Please feel free to interact with it. If you are

Re: [HarfBuzz] script segmentation

2018-02-15 Thread Richard Wordingham
On Wed, 14 Feb 2018 11:01:55 +0700 Martin Hosken wrote: > 1. Do we have a standard algorithm for this? Well, the obvious fix is a per-block default script, just as some unassigned characters have a default property of AL or R. The problem comes with Indic scripts, though a

[HarfBuzz] script segmentation

2018-02-13 Thread Martin Hosken
Dear All, One problem I am facing as we add characters to Unicode, is that if a character is added to a block, it doesn't necessarily mean that an existing application will keep that character in the same run as other characters in the same script of that block. This means the app is broken