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Support Context Reverse Chaining etc.

Posted: Thu Aug 08, 2013 9:20 pm
by Jan Kučera
That is really great. Are there any plans to support the other substitutions, like context/reverse chaining etc.?

Re: Support Context Reverse Chaining etc.

Posted: Thu Aug 08, 2013 9:42 pm
by Bhikkhu Pesala
Hi Jan,

I moved your post to this forum where it belongs and so should get noticed.

I don't know of specific plans about what will get implemented or when, but they are working hard to improve the implementation of OpenType feature support. I think they have done very well to get this far in the first release with OpenType support.

See this post for example.

Re: Support Context Reverse Chaining etc.

Posted: Thu Sep 05, 2013 1:17 pm
by León Fridsma
We haven't had any requests before for these types of substitutions before and have not seen them in any of our test fonts either. It should be possible to simulate a "context" lookup by creating a chained context lookup, but reverse chaining context is currently not possible. In the future we might add support for these types of substitutions, but for now our priorities are to get better GPOS support and make GPOS available in the scripting engine.