docs: warps of type as mesh envelopes on their saved grid

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/file-format-parity.md

@@ -1,6 +1,6 @@
 # File format parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (`.ai` and EPS import: stroked type keeps its stroke's cap, join and miter limit from the text document, #6472; `.ai` save: type in a variable font's named instance names its design-space setting, #6388; `.ai` and EPS import: envelopes of type open live where they draw as their drawn art and the layers with them draw as the page, #3179; `.ai` and EPS import: a note for type in an envelope, #3179; `.ai` and EPS import: the live envelope and warped type check sees white art; PDF import: DeviceN images of one ink or of process plates keep their inks, #6348; `.ai` import: images in a spot ink's Separation space keep their ink, #6350; PDF import: Separation images keep their ink, #6314; PDF editable import preserves authored ActualText once, including empty/nested spans and authored ordering (#6165); cross-line/style layout remains approximate; scores and estimates unchanged; PDF marked-text export (#6309): compatible glyphs stay on one layout line with per-glyph offsets; scores and estimates unchanged; PDF import: image masks open colorized by the color they are painted in, #6313; EPS and `.ai` editing data: a ligature the page names by a private-use glyph matches its text object; EPS import: CIDFonts only named, over a Unicode CMap, set as live type; EPS import: CMap mappings to base-font codes and glyph names; EPS import: CID-keyed fonts in FontSets (CFF) draw their glyphs; EPS import: `kshow` procedures kern live type; EPS import: embedded Type 1 fonts' glyphs and widths; EPS import: CID-keyed fonts draw their glyphs; EPS import: Type 42 fonts' characters and widths from the font they carry, show operators' spacing kept as tracking; EPS import: an image decoder's own buffers stop counting against the memory budget once it is decoded; EPS import: sampled functions interpolate between their samples; `.ai` and EPS type from the text document keeps its tab stops; it keeps auto leading and hyphenation options, and may show more of the file's last lines in an area frame; `.ai` and EPS import: Art brushes in the older form of their objects come into the Brushes panel; EPS import: gradients drawn as abutting strips come in as one gradient, without seams; EPS import: composite fonts draw their Type 42 glyphs; SVG import: filter and mask regions clip, #5876, #5875; SVG import: Gaussian blurs keep `color-interpolation-filters`, #5877; PDF and `.ai` export: objects' URLs as links, #5785; SVG import: `color-interpolation="linearRGB"` gradients, #5878; `.ai` import: paths with a Calligraphic brush open brushed, #372) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (`.ai` and EPS import: warps of type open as mesh envelopes on their saved grid, #3179; `.ai` and EPS import: stroked type keeps its stroke's cap, join and miter limit from the text document, #6472; `.ai` save: type in a variable font's named instance names its design-space setting, #6388; `.ai` and EPS import: envelopes of type open live where they draw as their drawn art and the layers with them draw as the page, #3179; `.ai` and EPS import: a note for type in an envelope, #3179; `.ai` and EPS import: the live envelope and warped type check sees white art; PDF import: DeviceN images of one ink or of process plates keep their inks, #6348; `.ai` import: images in a spot ink's Separation space keep their ink, #6350; PDF import: Separation images keep their ink, #6314; PDF editable import preserves authored ActualText once, including empty/nested spans and authored ordering (#6165); cross-line/style layout remains approximate; scores and estimates unchanged; PDF marked-text export (#6309): compatible glyphs stay on one layout line with per-glyph offsets; scores and estimates unchanged; PDF import: image masks open colorized by the color they are painted in, #6313; EPS and `.ai` editing data: a ligature the page names by a private-use glyph matches its text object; EPS import: CIDFonts only named, over a Unicode CMap, set as live type; EPS import: CMap mappings to base-font codes and glyph names; EPS import: CID-keyed fonts in FontSets (CFF) draw their glyphs; EPS import: `kshow` procedures kern live type; EPS import: embedded Type 1 fonts' glyphs and widths; EPS import: CID-keyed fonts draw their glyphs; EPS import: Type 42 fonts' characters and widths from the font they carry, show operators' spacing kept as tracking; EPS import: an image decoder's own buffers stop counting against the memory budget once it is decoded; EPS import: sampled functions interpolate between their samples; `.ai` and EPS type from the text document keeps its tab stops; it keeps auto leading and hyphenation options, and may show more of the file's last lines in an area frame; `.ai` and EPS import: Art brushes in the older form of their objects come into the Brushes panel; EPS import: gradients drawn as abutting strips come in as one gradient, without seams; EPS import: composite fonts draw their Type 42 glyphs; SVG import: filter and mask regions clip, #5876, #5875; SVG import: Gaussian blurs keep `color-interpolation-filters`, #5877; PDF and `.ai` export: objects' URLs as links, #5785; SVG import: `color-interpolation="linearRGB"` gradients, #5878; `.ai` import: paths with a Calligraphic brush open brushed, #372) · **Target:** Adobe Illustrator 2026 (30.x)
 
 Every format Illustrator opens, places, saves or exports, against VectorCraft's format table (`FORMATS`,
 `OPEN_EXTS`, `PLACE_EXTS` in `crates/engine/src/cmd/fileio/formats.rs`). Illustrator's list comes from its public
@@ -339,6 +339,7 @@ Stop opacity on translated artboards remains outside this regression coverage.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-10 | minor | `.ai` and EPS import: a warp of type (an envelope made with a warp around type) whose own warp, VectorCraft's, doesn't draw as its drawn art is tried again as a mesh envelope on the warp grid the file saves, with the same drawn-art check, budget and page comparison as #6421: where it passes, the type is editable and keeps the file's shape, and the warp's settings (style, bend) are lost. Type in an envelope with Distort Appearance on and strokes is also tried mapped from its box with strokes. A mesh bent far round (its end columns leaning more than halfway over) now reads the way it runs, not turned a quarter round. Tests `tests_native::a_warp_of_type_opens_as_a_mesh_on_its_saved_grid_and_keeps_its_shape_when_its_text_changes`, `a_warp_of_stroked_type_maps_from_its_bounds_with_strokes_where_its_drawn_art_does`, `a_warp_of_type_without_a_saved_grid_keeps_its_drawn_art`, `ai::tests::a_mesh_envelope_bent_far_round_opens_the_way_it_runs` (part of #3179) |
 | 2026-11-11 | minor | `.ai` and EPS import: type stroked in the text document keeps its stroke's cap, join and miter limit (keys 61, 62 and 64 of its character attributes, numbered as PostScript's `setlinecap` and `setlinejoin`: 0 butt or miter, 1 round, 2 projecting or bevel). They were left at a miter join with a limit of 10 whatever the file said, so type the file strokes with round joins, or with the usual limit of 4 or less, drew spikes at its sharp corners, some many points long. In users' files, used locally and never committed, the page strokes the type with the cap, join and miter limit these keys give; no file had a bevel join, which is read by the same numbering. A value that isn't one of theirs keeps the default, a miter limit past 500 is 500, and type without a stroke keeps the defaults. Dashes are not read: no file had dashed type to tell which keys hold them. Tests `ate::tests::a_run_keeps_its_stroke_cap_join_and_miter_limit`, `tests_native::stroked_type_keeps_its_cap_join_and_miter_limit`; scores unchanged |
 | 2026-11-10 | minor | `.ai` and EPS import: an envelope of type (a warp, a mesh or a top object around type) kept its drawn art, its type hidden, because the type is laid out from the text document only after the layers are read. It now waits for that: its text slots get their type, and where VectorCraft's own envelope of that type draws as the drawn art the file saves (the same check and budget as other envelopes, seen on white and on black), it opens live in the drawn art's place, its type editable in Edit Contents, and the hidden copy goes. As with other live envelopes, the layers with one are then compared with the page, which weighs the envelope as the art it draws (not as type laid out again, which the comparison allows more for), and when they don't draw as it the drawn art and the hidden type are put back. Layers used though they don't draw as the page (the editing data trusted, or the objects that differ coming in as the page's art) leave envelopes of type their drawn art and hidden type too. A `.ai` whose layers would open alone, without its PDF part, imports the PDF part to compare them with, and should they still not draw as it, or should no envelope of type open live, they open alone as before, with the envelopes' drawn art. Type in a font that isn't available, slots without type of their own (threaded, bound to a text or a visibility variable, a wrap object, type a look draws), envelopes in a symbol's or a pattern's art, and envelopes that draw differently keep their drawn art, with the note (#3179). Tests `tests_native::an_envelope_of_type_that_draws_as_its_drawn_art_opens_live`, `an_envelope_of_type_that_draws_apart_from_its_drawn_art_keeps_it`, `an_envelope_of_white_type_that_draws_apart_from_its_drawn_art_keeps_it`, `an_envelope_of_type_waits_on_the_page_of_layers_that_would_open_alone`, `an_envelope_of_type_that_draws_apart_from_the_page_does_not_open_live`, `trusted_layers_that_draw_apart_from_the_page_leave_an_envelope_of_type_its_drawn_art`, `layers_with_objects_that_come_in_as_the_page_art_leave_an_envelope_of_type_its_drawn_art`, `an_envelope_of_type_bound_to_a_visibility_variable_keeps_its_drawn_art` |
 | 2026-11-10 | minor | `.ai` save: a variable font's record in the text document's font set names the type's place in the font's design space (`/4`, each `fvar` axis as 16.16 fixed: the named instance's setting, or the run's own Variable Font setting) and the font's version (`/5`). Without them, type in a named instance such as Bold opened at the font's default instance in the app that opens the file. Two settings of one font are now two fonts of the set; a static font's record is unchanged. The record's form comes from the public report in #6388. Test `ai_editing::tests::variable_font_instances_name_their_design_space` (#6388) |