Khaled Hosny eb93b7688e [feaLib] Fix handled of "ignore" with unmarked glyphs
Fixes https://github.com/fonttools/fonttools/issues/2949

- If there are no marked glyphs in an "ignore" statement, issue a
  warning. The spec disallows this but makeotf allows it. It is most
likely a typo, so a warning is warranted.
- Mark the first glyph not all the glyphs, this matches makeotf.
- In asFea() always mark the input glyph.
- Udpate the tests.
2023-01-10 16:26:12 +02:00

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lookup lookup1 {
#test-fea2fea: ignore sub three' four;
ignore sub three four;
} lookup1;
lookup lookup2 {
#test-fea2fea: ignore pos three' four;
ignore pos three four;
} lookup2;
lookup lookup3 {
#test-fea2fea: ignore sub one' two, three' four;
ignore sub one two, three four;
} lookup3;
feature test {
lookup lookup1;
lookup lookup2;
lookup lookup3;
} test;