How to subset CMap subtables other than format 4?

[John Hewson]

Hi

I'm trying to subset a font with a format 6 CMap table, but RenumberingCMapTableSubsetter can only handle format 4 cmaps.

Sfntly can read the other CMap subtable formats, so why the restriction?

Thanks

John

[Stuart Gill]

John,

There is no reason that format 6 (and others) couldn't be supported other than time. It wasn't a requirement for what we were originally doing and so it wasn't. The change would be to expand the builder for the other format.

If you add a enhancement ticket to the project it would mean that the request wouldn't get lost. Even better would be the addition of such work by those using the project.

Stuart

--
You received this message because you are subscribed to the Google Groups "sfntly-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to sfntly-users...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.

[John Hewson]

Great. I'm happy to write some code to do this. Is there a process for contributing beyond just opening an issue with a patch?

Thanks

-- John

[Rolf]

Hi John,

This is maybe outside of the scope of this (because your question is posted to the sfntly group) but have you seen the recent update(s) to fonttools? https://github.com/behdad/fonttools

It has a subsetter which works pretty neat and out of the box. But again, not sure if this works for a project you might be working on and already is using sfntly.

Rolf

[Stuart Gill]

Yes, Behdad's work on fonttools is a good suggestion. The biggest difference is speed (perhaps 50ms compared to 5ms) but fonttools because of it's longer history has more complete coverage of the OpenType spec.