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pdfcraft/docs
xullul 7634ac8064 M7: address review of grouped Thai text preparation
Add:
- Report text grouped more than eight levels deep instead of leaving it
  silently grouped, and refuse forms whose resource-naming operators carry
  surplus operands, which would otherwise lose nested artwork when inlined.
- Return the applied preparation's own counts from Session::prepare_text, so
  text_prepare no longer reports a separate preview's.
- Shape a THSarabunPSK program that has its own Thai mark positioning by that
  layout, in its own codes. A span the subsets can't show in place is shaped
  whole, Latin rows included, by a complete program of the same face and style,
  such as a CFF face from Load font.

Change:
- Expand only forms that show text, directly or through nested forms; image-
  and vector-only forms stay grouped and uncounted. Match a Do's raw resource
  name bytes, and refuse RGB-blended groups on pages naming no blending space.
- Check the recovered THSarabunPSK map and the Windows PUA alternates glyph by
  glyph against the subset's advances, leave dropped glyphs unmapped, and
  insert the repair after the last endcmap.
- Shape a Thai run split across same-face subsets cluster by cluster and skip
  subset glyphs that are empty. Take the legacy path only for programs in the
  legacy glyph order, needing only the glyphs the new text uses.
- Require GPOS mark/mkmk in the script and language system HarfRust selects.
- Match same-face candidates by weight and slant from the name, descriptor
  weight or a non-zero ItalicAngle; the Italic flag alone is ignored, as
  exporters set it on upright faces. Never complete bold or italic text with
  the Regular bundled Thai face.
- Name the missing character, or the unavailable builtin:thai choice, in errors.

Chores:
- Document text_prepare's fields, builtin:thai, the app's refusal reporting
  limits and the new routing; extend the text-edit parity evidence. Tests that
  need craft-fonts now say they skipped instead of returning silently.

Validation: with and without craft-fonts, fonts 105 (+3 build-input), edit
465, engine 482 (+28 integration) and automation 50 + 352 passed; editor flows
248 passed. Formatting, strict Clippy, layers, assets and parity passed; the
wasm check was not run locally. Each new regression failed with its fix
reverted. Real-PDF edits on Royal Gazette 26288 kept their source fonts.
2026-11-07 15:59:38 +07:00
..
2026-10-27 20:52:31 +00:00