Merge remote-tracking branch 'upstream/main' into fix/aligned-lines-trailing-tracking

# Conflicts:
#	docs/file-format-parity.md

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: centred and right-aligned lines of tracked type are aligned without the tracking after their last character, as the file's page aligns them, #6610; `.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)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (`.ai` and EPS import: centred and right-aligned lines of tracked type are aligned without the tracking after their last character, as the file's page aligns them, #6610; `.ai` and EPS import: an envelope saved in Edit Contents whose mesh lies away from its drawn art by a move opens live on that art, #6570; `.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
@@ -340,6 +340,7 @@ Stop opacity on translated artboards remains outside this regression coverage.
 | Date | Change | Summary |
 |---|---|---|
 | 2026-11-11 | minor | `.ai` and EPS import, and what SVG export, PDF export and `.ai` save draw: centred and right-aligned lines of tracked type are aligned without the tracking after their last character, as a `.ai`'s own page aligns them (see type-parity.md, same date). In 224 users' files (used locally, never committed), 63 render differently: 54 closer to the page, 7 further, 1 alike and 1 that couldn't be compared; among them the median share of pixels that differ from the page went from 4.4% to 1.0%. Of the 7: one now opens from its layers instead of its PDF part (they differ from the page by less than the import's 5% limit now; type note 3.8%); one has a centred line whose spacing inside it differs from the page's, which now centres on the page's line while half of it no longer lies on the page's glyphs (type note 1.4% to 2.4%); five moved by less than 0.05 of a percentage point, in type the page draws in other glyphs. The type note shows a smaller share in 6 files; 2 more envelopes of type open live (129 to 131, none fewer in any file). SVG import: `text-anchor` aligns a line's advance, which ends after its last character's letter spacing, so a centred or right-aligned letter-spaced line moves back by half or all of it and stays where a reader draws it; SVG export, which anchors lines so, reads back unchanged (test `import_text::anchored_letter_spaced_lines_stay_where_a_reader_draws_them`). Affinity import: centred or right-aligned tracked artistic text moves by half or all of its last character's tracking, as layout now aligns it (unverified against Affinity, whose files we don't have), and differently aligned paragraphs line up by the widths layout aligns them by (`affinity_features::artistic_text_aligns_its_lines_within_the_longest`). Scores and estimates unchanged. (#6610) |
+| 2026-11-11 | minor | `.ai` and EPS import: while an envelope's contents are edited, the editing data keeps its mesh (a mesh's, a top object's or a warp's grid) in its dictionary, and in some files that mesh lies away from the drawn art by a move, the contents with the drawn art, as if the mesh hadn't followed the envelope when it moved: the envelope drew its contents elsewhere and kept its drawn art. A mesh or top object saved in Edit Contents (or a warp of type tried on its saved grid) whose mesh draws the contents as large as the drawn art, within half a point over width and height together, but further from it than that, is now tried again, after every other way and with one more of the import's checks, with its mesh moved by as far as the drawn art's box lies from the box of what it draws; it opens live there where it then draws as the drawn art. In users' files, used locally and never committed, only envelopes saved in Edit Contents draw elsewhere than their drawn art, and nothing in their dictionaries says by how much they moved. Tests `ai::tests::an_envelope_in_edit_contents_whose_mesh_stayed_behind_opens_live_on_its_drawn_art`, `tests_native::a_warp_of_type_in_edit_contents_whose_grid_stayed_behind_opens_on_its_drawn_art` (#6570) |
 | 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. |