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googlefonts / fontc

Where in we pursue oxidizing (context: https://github.com/googlefonts/oxidize) fontmake.

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.glyphs parsing failures

cmyr opened this issue · comments

commented

After running fontc on ~480 fonts hosted by google fonts, a full ~100 of them failed to compile due to errors while parsing .glyphs files.

  • the majority of these (74) relate to unknown/legacy glyph categories, like "Uppercase" and "Smallcaps" (which I think are now subcategories?) As well as "Other" (which we should parse?) and the empty string, which we should treat as no category.
  • 21 of these are "Oops this parser is just broken"
  • 2 of these are 'unexpected character' during parsing
  • 1 of these is 'Unknown escape code'.

so the first of these should be easy enough to solve, and the others are tbd (but I'm optimistic)

commented

Two requests:

  1. Document how to run on lots of fonts on the root index, it's a useful tool
  2. Capture specific examples, e.g. clone this repo and build this file. Ideally the crater-esque run would report that.
commented

Did you happen to run ttx_diff on the ~380 that did compile? - would be very interested in our starting position for both how many compile and how many pass so we can see the improvement over time.