Add Hebrew shaper, ported from HarfBuzz#375
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- Compose Hebrew presentation forms (FBxx range) for fonts without GPOS marks, matching `compose_hebrew`; chain compositions step by step (e.g. SHIN + SHIN_DOT + DAGESH → FB2C) instead of bailing after the first match - Reorder patah/qamats + sheva/hiriq + meteg/below mark triplet by codepoint identity, matching `reorder_marks_hebrew`'s end state for both canonical NFC input and HarfBuzz's modified-CCC pre-reorder order - Scope the `hasGposMark` gate to the Hebrew script's GPOS features instead of scanning the global featureList, matching HarfBuzz's per-script `has_gpos_mark` - Add Taamey Frank CLM fixture (GPL v2 + font exception, also used by HB) with 6 shaping tests; reorder tests now exercise real code (each fails with the function disabled)
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fontkit currently has no dedicated Hebrew shaper — Hebrew (
hebrscript) falls through toDefaultShaper. This PR ports the two Hebrew-specific behaviours from HarfBuzz'shb-ot-shaper-hebrew.cc:!has_gpos_mark(font without GPOS mark positioning), matching HarfBuzz'scompose_hebrew.reorder_marks_hebrew.Tests
Five tests added under
test/shaping.js, ported from HarfBuzz'shebrew-diacritics.tests. Test fixture is Taamey Frank CLM (GPL v2 + font-embedding exception, the same font HB uses in its test suite).Two of the tests specifically exercise the new reorder path and fail without this shaper registered.