.ai import: type keeps the manual kerning of its text document (#6899)

The text document reader never read a story's manual kerning, so type
kerned by hand in a .ai or EPS editing copy came in with automatic
kerning on every pair and drifted from the file's page from each kerned
pair on. Envelopes of such type drew apart from their drawn art and
kept it.

Key 8 of a story's text holds the kerning as runs of characters (key 1),
each with a value in thousandths of an em (key 0 of key 0) or empty
where the automatic kerning applies. Each character with a value now
takes it as its Kerning, the space after it, and the style runs split
where the value changes. A value that can't be read keeps the automatic
kerning, a run whose length can't be read ends the runs there, and past
65,536 runs the characters keep the automatic kerning.

- ate.rs: Story reads the runs (manual_kerning) and node() splits its
  text runs at them (Kerns), with a unit test over values, style-run
  boundaries, hostile values and the laid-out gap, and one that pins
  the limit of runs.
- tests_native.rs: an imported story with kerned and automatic runs.
- docs/file-format-parity.md: status line, mapping line, revision row.

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 (newly imported SVG/SVGZ titles are filtered and bounded without changing restored titles, #3626; `.ai` and EPS import, and what every export and `.ai` save draw: type's strokes in an envelope paint at their own weight along its bent outlines, Distort Appearance on or off, #6644; `.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)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-11 · **Change:** minor (`.ai` and EPS import: type keeps the manual kerning of its text document, #6899; newly imported SVG/SVGZ titles are filtered and bounded without changing restored titles, #3626; `.ai` and EPS import, and what every export and `.ai` save draw: type's strokes in an envelope paint at their own weight along its bent outlines, Distort Appearance on or off, #6644; `.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
@@ -56,7 +56,7 @@ private editing data. VectorCraft:
   own paints with the paint before the mask's dictionary, as the writer leaves out paint that doesn't change.
   Type from the text document keeps auto leading as auto, each line taking the paragraph's share
   (Auto Leading) of the largest type on it ([Line and character spacing](https://helpx.adobe.com/illustrator/using/line-character-spacing.html)),
-  and the paragraph's hyphenation options and tab stops. Stroked type keeps its stroke's cap, join and miter limit. Area type of one
+  and the paragraph's hyphenation options and tab stops. Stroked type keeps its stroke's cap, join and miter limit. Type keeps its manual kerning (key 8 of a story's text, thousandths of an em after a character). Area type of one
   frame whose last lines the file sets but which don't fit here (the fallback font, or a descent
   past the frame's bottom) may get a frame taller from its bottom, by its lines' deepest descent plus 0.05 pt and only when that shows more of those lines, with a warning when it does.
   RGB in the PDF page's `ICCBased` spaces keeps the file's numbers in a `.ai` (the `uncalibrated_rgb`
@@ -343,6 +343,7 @@ Stop opacity on translated artboards remains outside this regression coverage.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-12 | minor | `.ai` and EPS import: type from the text document keeps its manual kerning (#6899). Key 8 of a story's text holds it as runs of characters (key 1), each with a value (key 0 of key 0, in thousandths of an em) or empty where the automatic kerning applies; a character with a value takes it as its Kerning, the space between it and the next character ([Line and character spacing](https://helpx.adobe.com/illustrator/using/line-character-spacing.html)), of the em as its Horizontal Scale draws it, as tracking. It wasn't read, so type kerned by hand came in spaced by the font alone and drifted from the page from each kerned pair on, and envelopes of such type drew apart from their drawn art and kept it. In users' files, used locally and never committed, 48 stories in 17 of 224 files have it, and the drawn art of envelopes of such type sets each kerned gap wider or narrower by exactly that value (a heading's first pair at -140, the letters of a line at 20 to 220). Measured against each file's own page, 14 of those files draw closer (in 4 the pixels that differ go from 2.7–4.7% to under 0.6%) and 2 a little further, both where an envelope of type now opens live in place of its drawn art; envelopes of type that open live go from 154 to 159 of 203, none fewer in any file, and two notes that the type differs from the page go. A value that can't be read keeps the automatic kerning, a run whose length can't be read ends the runs there, and past 65,536 runs the characters keep the automatic kerning. `.ai` save still leaves kerning out of the editing data, so saving such a file as `.ai` again now gives the note that attributes of type are left out for type with manual kerning. Tests `ate::tests::a_story_keeps_its_manual_kerning`, `tests_native::type_keeps_its_manual_kerning`; scores unchanged |
 | 2026-11-12 | minor | Save refusal follow-up (#6146): changed format opens its Save options; unchanged format retains original options. Focused UI regressions passed, including the format-change case that failed before the fix; native panel acceptance pending. Scores and estimates unchanged. |
 | 2026-11-11 | minor | Newly imported SVG/SVGZ titles use the imported-text rules: generated Untitled names and control-only titles give the filename fallback, other control characters are removed, and titles are limited to 65,536 characters. Native and Preserve Editing titles remain unchanged (#3626). |
 | 2026-11-11 | minor | Native and Preserve Editing restores keep an existing File Info title exactly, including repeated spaces; imported-text fallback titles alone are normalized (#3626). |