Currently Glyphs uses its own syntax, and feaLib supports the proposed AFDKO syntax. I don’t really care which syntax is used, but I want something that works with both feaLib and feaKit. I’d even settle for Glyphs parsing but ignoring the syntax that FontTools supports.
How do you parse and ignore at the same time?
Parse the syntax but don’t actually compile it into the font (assuming compiling is the harder part). But all I really care about is Glyphs not showing syntax errors, I compile the fonts externally.
We’ll have a look.