Merge remote-tracking branch 'origin/main' into feat/glyph-alternates

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` save: stroked type keeps its stroke's cap, join and miter limit in the text document, #6472; `.ai` and EPS import, PDF import: tracking and manual kerning in horizontally scaled type take the Horizontal Scale, as the file's page spaces such type; `.ai` and EPS import: stroked type in an envelope maps from its glyphs grown by half its stroke, #3179; `.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)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (`.ai` save and open: layer colour presets Yellow, Magenta and Cyan keep their colour, as the `Lb` colour index now follows the file's numbering, #6502; `.ai` save: stroked type keeps its stroke's cap, join and miter limit in the text document, #6472; `.ai` and EPS import, PDF import: tracking and manual kerning in horizontally scaled type take the Horizontal Scale, as the file's page spaces such type; `.ai` and EPS import: stroked type in an envelope maps from its glyphs grown by half its stroke, #3179; `.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 |
 |---|---|---|
+| 2026-11-11 | minor | `.ai` save (PDF-compatible editing copy and legacy) and `.ai`/EPS open: a layer's `Lb` colour index follows the file's numbering, where Magenta, Cyan and Yellow are 4, 5 and 6 and `LAYER_COLORS` has Yellow, Magenta and Cyan; Yellow, Magenta and Cyan layers no longer come out as Magenta, Cyan and Yellow, and the other 24 presets are unchanged (#6502, from the index and RGB pairs in users' files). `LAYER_COLORS` keeps its order, so `.vectorcraft` files and the Layers panel don't change. Scores and estimates unchanged. |
 | 2026-11-11 | minor | `.ai` save: stroked type writes its stroke's cap, join and miter limit into the text document (keys 61, 62 and 64, as `.ai` import reads them since #6500), so they come back when the file opens again and no longer count among the attributes of type left out; a run without a stroke doesn't count them either, as they draw nothing. Tests `ai_editing::tests::type_comes_back_as_type`, `an_unstroked_run_with_a_stroke_style_loses_nothing` (follow-up to #6472) |
 | 2026-11-11 | minor | `.ai` and EPS import, PDF import, SVG export and `.ai` save: type with a Horizontal Scale other than 100% and tracking or manual kerning is spaced as a `.ai`'s own page spaces it. Layout now measures tracking and manual kerning in thousandths of the em as the scale draws it (see type-parity.md, same date); they were added at the full em, so such type drifted from the page letter by letter. A `.ai`'s page writes that type's character spacing as the tracking itself in a text space as wide as the scale, which PDF scales by it (ISO 32000-1 §9.4.4). In 224 users' files (used locally, never committed), 93 render differently. Of the 25 whose render moved by more than 1% of its pixels against the page, 23 came closer. The note on the type differing from the page shows a smaller share in 5 files (11.0% to 4.4% at most) and a larger one in 2 (by 0.2 to 0.3 points). 9 more envelopes of type open live (113 to 122 of 203, none fewer in any file), and no file switched between its layers and its PDF part. PDF import: the tracking of horizontally scaled type is the file's `Tc` in thousandths of its size (it was that times the scale), the glyphs where they were (test `tests::text_placement::character_spacing_in_horizontally_scaled_type_is_the_files_tc`). SVG export writes the letter spacing in thousandths of the font size it writes (the vertical scale), so type scaled uniformly keeps its spacing in a viewer (test `text_layout::spacing_in_uniformly_scaled_type_takes_the_scale`); tracked type scaled horizontally alone still differs a little there, as before. A `.ai` saved here writes the same values as before; VectorCraft now lays them out as the file's own PDF part draws them. Scores and estimates unchanged. |
 | 2026-11-11 | minor | `.ai` and EPS import: stroked type in an envelope with Distort Appearance is tried mapped from its glyphs grown by as far as its strokes paint along a side (half the weight of a centred stroke), without what miter joins add at corners, for a stroke on its appearance or on a group round it as well as its characters'; it was mapped from its bounds with strokes, which reach as far as a miter join may at a corner. Tests `ai::envelope::tests::stroked_type_is_tried_mapped_from_its_glyphs_grown_by_half_its_stroke`, `type_with_a_character_stroke_is_tried_mapped_from_its_bounds_with_strokes`, `a_stroke_on_a_group_of_type_grows_the_box_by_half_its_weight` (part of #3179) |