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[ttLib] scale-upem should not scale vsindex

See original GitHub issue

Same as https://github.com/fonttools/fonttools/issues/2840#issuecomment-1267434947 and not a bad font. In visit all ops are sent to _cff_scale, but vsindex should be skipped. Otherwise we scale the index and get index out of range. If I skip scaling vsindex here I don’t get an error…

            for op, args in commands:
                if op == 'vsindex':
                    continue
                _cff_scale(visitor, args)

Issue Analytics

  • State:closed
  • Created 10 months ago
  • Comments:9 (5 by maintainers)

github_iconTop GitHub Comments

1reaction
punchcuttercommented, Nov 17, 2022

Ok, I tried to edit and make a PR with the iOS app for the first time. I think it worked.

0reactions
khaledhosnycommented, Nov 17, 2022

Some Type 1 and CFF fonts use it to encode fractional numbers, CFF does not need this but I think it was carried over from Type 1 fonts.

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