Part of #372: SVG import names the one layer from the root element

Other editors export a document with a single layer without a layer group:
the layer's name goes on the root <svg> (id, or data-name) and its art sits
directly inside. Such a file opened as "Layer 1"; now its one layer takes the
root's name. Files whose top-level groups are the layers are unchanged, and an
Inkscape root's generated id (with inkscape:version) isn't taken as a name.

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

ROADMAP.md

@@ -145,7 +145,7 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
 - **Transparency:** opacity masks (clip/invert/disable/link), exported as SVG `<mask>` and PDF soft masks.
 - **Advanced art:** live Blends (steps/distance/smooth colour, editable spine, anchor-targeted Blend tool, faithful interpolation, knockout), Envelope Distort (warp/mesh/top object, Reset, full Envelope Options, mesh handles, Edit Contents; type, images, symbols, gradients, patterns and appearance distorted everywhere), Liquify tools with options and pen pressure, Puppet Warp with rotating pins, Perspective Grid with presets, movable planes and projected type (choosing a perspective tool shows the grid; Hide Grid hides it with the tool still chosen), Gradient Mesh, Shape Builder (stroke-only open paths and lines cut the regions they cross and enclose regions of their own; filled open paths count as closed; erase mode while Alt/Option is held: a minus pointer, red highlights of what will go, a click or drag deletes the regions touched, the pieces of open lines and the edges (outline pieces between the points where paths meet, opening their paths there) it passes over, one undo step, `shapeBuilder.merge {erase}` and `shapeBuilder.regions` edges over MCP), Live Paint (every path an edge, open lines included), Image Trace (12 presets, colour layers traced in parallel; a trace past two million anchor points or an image over 64 megapixels is refused with advice rather than running out of memory, and a selection too large to outline shows its bounds (#525); Object › Image Trace › Make and Make and Expand trace at once with the Default preset, #543; with an image selected the Control bar and the Properties panel show Image Trace, whose arrow traces with any preset, Mask (`object.maskImage`: a clipping path on the image's outline, selected so its handles crop), Crop Image and Embed or Unembed in place of Fill and Stroke; with an Image Trace object selected, its Preset (choosing another traces again), the Image Trace panel and Expand, plus Release in Properties; the View modes are not done), pattern swatches with pattern editing mode, live Repeat (radial/grid/mirror).
 - **Paint and appearance (M3):**
-  - **Swatches:** names follow the colour model and are unique; Swatch Options (process/spot, Global, Gray/RGB/HSB/CMYK/Web, live preview); editing a global or spot swatch recolours every linked fill, stroke and text run in one undo step; multi-select and delete with confirmation; New Swatch and New Color Group dialogs (a group from the selected artwork's colours); swatches in colour groups convert, separate and count like any other. The Swatches panel selects ranges and whole groups, has a find field, and drags swatches to reorder, regroup or paint art; Add Used Colors, Select All Unused, Merge, Ungroup and Sort by Kind; a CMYK document keeps applied colours in CMYK. Swatch libraries: nine generated colour libraries and five gradient libraries in a library panel, saved and loaded as `.vcswatches`, `.gpl` or CSS. Tints of global and spot colours ("Name 40%") stay linked and separate as a percentage of their plate. Spot colours can be defined in Lab (Spot Colors options). A built-in [Registration] swatch prints on every plate.
+  - **Swatches:** names follow the colour model and are unique; Swatch Options (process/spot, Global, Gray/RGB/HSB/CMYK/Web, live preview); editing a global or spot swatch recolours every linked fill, stroke and text run in one undo step; multi-select and delete with confirmation; New Swatch and New Color Group dialogs (a group from the selected artwork's colours); swatches in colour groups convert, separate and count like any other. The Swatches panel selects ranges and whole groups, has a find field, and drags swatches to reorder, regroup or paint art; Add Used Colors, Select All Unused, Merge, Ungroup and Sort by Kind; a CMYK document keeps applied colours in CMYK. Swatch libraries: nine generated colour libraries and five gradient libraries in a library panel, saved as `.vcswatches`, `.gpl` or CSS, and loaded from `.vcswatches`, `.gpl` and swatch exchange (`.ase`) files (RGB, CMYK, Lab and Gray; global, spot and process; groups). Tints of global and spot colours ("Name 40%") stay linked and separate as a percentage of their plate. Spot colours can be defined in Lab (Spot Colors options). A built-in [Registration] swatch prints on every plate.
   - **Colour:** a Color Picker (colour field, H/S/B/R/G/B channel slider, HSB/RGB/Lab/CMYK fields, hex, web-only snapping, out-of-gamut correction); the Color panel follows each colour's own model and Alt-click paints the other proxy; proxies look through groups and show "?" for mixed paint; Invert, Complement, Apply Last Color (`,`) and Apply Last Gradient (`.`) keep the colour model; every paint command feeds the recent colours. The Color Guide has 21 harmony rules, Steps and Variation options and Limit to Library. Adjust Color Balance (its Global mode shifts tints) and Saturate preview live; Edit Colors and Recolor also reach meshes, images and patterns. Recolor Artwork has colour reduction, five recolour methods, presets, Limit to Library, a colour-wheel Edit tab and Edit Color Group; a local Color Themes panel saves five-colour themes. Fill/Stroke chips open swatch and mixer popovers (the Properties panel has the Control bar's Fill and Stroke chips, Stroke link and weight spinner, with nothing selected too), panels have Illustrator's Window menu keys (Align Shift+F7, Transform Shift+F8, Pathfinder Cmd+Shift+F9, Layers F7, Character Cmd+T…; every panel can be given one in Edit › Keyboard Shortcuts), and Eyedropper Options pick up and apply chosen attributes (Alt and Shift+Alt, image pixels). Fills and strokes can overprint (Attributes panel, Overprint Black options), and CMYK documents blend in inks on screen, in PDF and when flattening. Document Color Mode converts the art, symbols, pattern tiles and swatches through the colour settings: Gray stays Gray, RGB greys separate into four-colour greys and a rich black as Illustrator does, or go on the black plate only with `grays: "black"` (also for `document.open {colorMode}`).
   - **Gradients:** lossless, validated gradient params; gradients follow rotate, reflect, shear, non-uniform scale and distortions; the Gradient tool edits the fill or stroke of the active proxy, type included; an interactive on-canvas annotator (move, length/angle, rotate, add/move/delete/duplicate stops, midpoints, a stop popover, Delete and arrow keys). The Gradient panel has the Fill/Stroke proxy, a gradient-swatch dropdown with Save to Swatches, midpoint locations, Alt-drag to copy or swap stops, swatch drops on the ramp and a stop eyedropper; copied appearances and graphic styles place gradients on each target's own bounds; gradient handles snap and honour Constrain Angle. Gradient stops stay linked to global and spot swatches. Freeform gradients (points and lines) are edited on the canvas; radial gradients have an extent ellipse, an aspect handle and an off-centre focal point (SVG `fx`/`fy`, PDF two-point radials). A stroke's gradient runs within, along or across it. Object ▸ Expand turns gradients into N objects or a gradient mesh.
   - **Strokes:** one stroke-geometry module shared by the canvas, SVG, PDF and Outline Stroke; dotted lines (zero-length dashes draw dots or squares); arrowheads with hollow outlines, tip-on-end or extend-past-end alignment and one opacity for line and head. SVG and PDF export arrowheads, width profiles, brushes and aligned strokes exactly as the canvas draws them; Outline Stroke and the live Outline Stroke effect outline every stroke item as drawn (dashes, heads, profiles, alignment); dashes can be fitted to corners and path ends; width profiles carry through dashes, and their corners take the join. The Stroke panel edits type's character strokes, follows the stroke units (its weight presets are round values in that unit: `0.25 mm`, `0.0625 in`, `1 px`, #426; fields show four decimals in mm, cm and inches, three in points), shows mixed values blank and opens from the Control bar. A width profile library, thirty more arrowheads, and Width Point Edit with multi-select and discontinuous points. Visual bounds and clicks cover the whole painted stroke. Scale Strokes & Effects, Scale Corners and Use Preview Bounds work everywhere, and new art inherits stroke options, a graphic style or the whole last appearance.
@@ -158,7 +158,7 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
 - **Fonts:** a font is found by any of its names (family and style in every language of its name table, legacy family/style pairs, PostScript name), so documents from other apps open with the font they name; Find Font and `text.fonts` say for each font whether it was found exactly, by another name, substituted or missing, and how many glyphs are missing. PDF and `.ai` import brings Japanese text back as live type: CID fonts without a ToUnicode map read through the standard CMaps, vertical columns (WMode 1) as vertical type, letter spacing as tracking; a glyph is live type only when the installed font (in the closest style of its family) draws the same glyph, and text in a font that isn't installed comes in as live type shown in the fallback font until the font is installed (exports that draw it — PDF, EPS, EMF/WMF, raster, SVG outlines or embedded fonts — warn that they wrote the fallback font; `textAs: outlines` keeps the PDF's embedded glyphs).
 - **Files (M4):**
   - `.vectorcraft` (lossless JSON, compressed, atomic saves, save down to v1), Save As with a format chooser, Save a Copy, Revert, templates, Data Recovery after a crash (browser tabs hold their copies with Web Locks too, so a background tab's copies are never taken for a crash's, and a tab repairs copies another removed when it resumes: #367), background save and export. The desktop app writes its warnings and errors (graphics adapter, a lost graphics device, panics the guard recovered from) to standard error and to `logs/vectorcraft.log` next to the preferences, the two previous runs kept and each file capped at 16 MiB, so a launch without a terminal still leaves something to attach to a bug report (#465).
-  - SVG/SVGZ in and out with SVG Options, Preserve Editing, symbols, filters, rich text and physical units (SVG type under a transform or `viewBox` scale opens at the size it draws at, the scale moved into its size, leading, baseline shift and strokes, a stretch, skew or rotation kept as its transform: #396; a top-level group with a clip path, such as a clipped Inkscape layer, opens as a layer with a clipping mask, its name kept: #420; hidden objects written hidden on Save and `convert`, and `data-*` attributes kept as the objects' own data: #522; top-level groups open as layers named from `data-name`, else the id, also when one more group (a transform on all the art, a `<switch>`) wraps them, hidden ones hidden; nested groups stay groups, except the sublayers VectorCraft writes, marked `data-vc-layer`, and Inkscape sublayers, which open as sublayers in their layer's colour: #372); PDF and PDF-compatible `.ai` in and out (layers, with hidden ones kept hidden with their art and nested ones as sublayers, on pages of up to 64 million operators, art whose layer can't be told going to a hidden, non-printing layer rather than showing or printing: #419; strokes kept live, a fill and a stroke of one outline as one object; a type object's stroke written as each glyph's outline stroked back on the type, so it stays one editable object; lines wrapped in a frame (each wrapped line ending in a space, one left edge, leading and font) back as one area type object, left aligned or justified with its paragraph spacing, where laying it out breaks the lines where the file does; glyphs set apart by gaps wider than a space (a barcode's digit groups) keeping their places; layers stacked as the pages mark them even when one first paints on a later page, art ending a layer's marked content or a clip closing in a later layer kept in its own layer, and layers with no art kept empty: #508; masks, editable text with type set along a curve coming back as type on a path, each artboard's art on its own page only, an `.ai`'s white page under its layers left out rather than coming in as art, spot colours, presets, security, marks and bleed, ICC output intents, raster effects, subset fonts, PDF/X, PDF layers, overprint, page thumbnails, fast web view, PDF 1.3). CMYK images keep their ink amounts from PDF import (and from placed CMYK TIFFs) to PDF export: a CMYK JPEG passes through unchanged, others stay CMYK (DeviceCMYK, or ICC-based CMYK in PDF/X-3/X-4) unless the Output settings convert them; the canvas shows them through the working CMYK profile (#320).
+  - SVG/SVGZ in and out with SVG Options, Preserve Editing, symbols, filters, rich text and physical units (SVG type under a transform or `viewBox` scale opens at the size it draws at, the scale moved into its size, leading, baseline shift and strokes, a stretch, skew or rotation kept as its transform: #396; a top-level group with a clip path, such as a clipped Inkscape layer, opens as a layer with a clipping mask, its name kept: #420; hidden objects written hidden on Save and `convert`, and `data-*` attributes kept as the objects' own data: #522; top-level groups open as layers named from `data-name`, else the id, also when one more group (a transform on all the art, a `<switch>`) wraps them, hidden ones hidden, and a file whose art sits loose under a root `<svg>` with an id (or `data-name`), as one-layer exports write it, opens with its one layer named from it; nested groups stay groups, except the sublayers VectorCraft writes, marked `data-vc-layer`, and Inkscape sublayers, which open as sublayers in their layer's colour: #372); PDF and PDF-compatible `.ai` in and out (layers, with hidden ones kept hidden with their art and nested ones as sublayers, on pages of up to 64 million operators, art whose layer can't be told going to a hidden, non-printing layer rather than showing or printing: #419; strokes kept live, a fill and a stroke of one outline as one object; a type object's stroke written as each glyph's outline stroked back on the type, so it stays one editable object; lines wrapped in a frame (each wrapped line ending in a space, one left edge, leading and font) back as one area type object, left aligned or justified with its paragraph spacing, where laying it out breaks the lines where the file does; glyphs set apart by gaps wider than a space (a barcode's digit groups) keeping their places; layers stacked as the pages mark them even when one first paints on a later page, art ending a layer's marked content or a clip closing in a later layer kept in its own layer, and layers with no art kept empty: #508; masks, editable text with type set along a curve coming back as type on a path, each artboard's art on its own page only, an `.ai`'s white page under its layers left out rather than coming in as art, spot colours, presets, security, marks and bleed, ICC output intents, raster effects, subset fonts, PDF/X, PDF layers, overprint, page thumbnails, fast web view, PDF 1.3). CMYK images keep their ink amounts from PDF import (and from placed CMYK TIFFs) to PDF export: a CMYK JPEG passes through unchanged, others stay CMYK (DeviceCMYK, or ICC-based CMYK in PDF/X-3/X-4) unless the Output settings convert them; the canvas shows them through the working CMYK profile (#320).
   - EPS and DXF in and out, EMF/WMF in and out; PNG (with PNG-8), JPEG, WebP, GIF, TIFF, BMP, Targa and layered PSD export. EPS import runs a PostScript Level 3 interpreter written from the PostScript Language Reference: resource categories and `resourceforall`, local and global VM (`currentglobal`/`setglobal`/`gcheck`), `clipsave`/`cliprestore`, subarrays and substrings that share storage, the standard dictionaries in `systemdict`, `dictstack`, `internaldict`, executable filters and strings, `load` by any key, `//name` immediate names, `token`, `execform`, user paths, `cshow`, `rootfont`, `cachestatus`, colour rendering and halftone queries, file `status` and data read with `flushfile`, and `pdfmark` marks dropped (Discord feedback, #466, #469, #474). Masked images (`ImageType 3` in its three interleavings) and reusable streams are read, and an image's several data sources are read in turn, as the reference defines (procedures that read one file get their own rows: such images came in banded, #498). `restore` puts dictionaries back as they were at the `save`, so programs that count their saves in a dictionary read to their end (part of #505). Tiling patterns come in as pattern swatches, uncoloured ones too; Type 3 fonts' glyphs as their outlines, spaced by `ashow`/`widthshow`/`xshow`/`kshow`; mesh and function-based shadings (types 1, 4–7) as gradient meshes; sampled functions (type 0) and Flate/LZW predictors are read. It is tested with programs written from the specification in the ways common generators use these features; Inkscape/cairo EPS files open as vectors. When a file's PostScript still can't be read, it opens as its TIFF preview, its Windows metafile preview (as vectors) or its EPSI preview, and the warning (in the status bar, `document.open`/`app.open`/MCP `open_file` replies and `vectorcraft-cli info`) names the error, the operator that raised it and the procedures it ran in. Legacy PostScript `.ai` files (Illustrator 3–8, written with the prolog that defines their operators) keep their groups and nested groups (`u` … `U`), between and inside clipping groups; EPS and EMF/WMF import nest clips (and groups) at most 128 deep, so a hostile file can't exhaust the stack. DXF TEXT justified Fit or Aligned spans its two points (stretched, or scaled as a whole).
   - Placed documents: File › Place of a `.vectorcraft` file links to it by default (`file.place`'s `link`): one locked object showing an artboard of the document (or its art's bounds), read the way placing it without Link reads it, its symbols, patterns and images kept apart from the document's; without Link (or from bytes, not a file) it is an editable copy as before. It stays vectors in every output (SVG, PDF, EPS, EMF, DXF), and so do placed documents inside it, read from their own files up to 8 levels deep (documents that place each other stop there). On screen they draw from bitmaps cached per file and zoom step, shared by every copy and made in the background (a placeholder until ready), so a sheet of them redraws in about a millisecond; exports and prints draw them exactly. Like linked images, a save keeps only a preview of each (JPEG when opaque) unless Include Linked Files; output, and zooming past the preview, read the file again, falling back to the preview with a warning when it is gone or changed. Saves for older versions write them as plain art. Links check, update, relink, Update Links on open, Link Info (the artboard's size), Placement Options, Break Link (also Embed, Object › Expand: the editable copy placing without Link gives, its resources joining the document), Edit Original (the document in a new tab) and the Links panel cover them; saving a document updates the open documents that place it. The native format (v4) keeps data of 8 KB or more after the JSON instead of base64 in it.
   - Place and the Links panel, Package, File Info, Print with print presets, PostScript output and print tiling, slices and Save for Web, Export for Screens and Asset Export, CSS Properties, PNG/PDF/SVG/text clipboard flavours; files copied in a file manager paste as art (SVG, PDF, EMF/WMF, bitmaps) on every desktop platform, and Linux/Wayland reads the compositor's clipboard (#398); on Linux the Paste menu checks the clipboard off the UI thread, so an X11 owner that never answers can't freeze the window (#510); screenshots and other copied pictures paste as embedded images at the view centre everywhere, the web included (#457).

contributors/people.toml

@@ -31,3 +31,7 @@ sync_github_name = true
 
 [people.omd0]
 sync_github_name = true
+
+[people.dotCooCoo]
+real_name = "Robert Lee"
+sync_github_name = true

crates/color/src/palette_io.rs

@@ -1,6 +1,9 @@
 //! Swatch library files: the native `.vcswatches` JSON (colour models, global, spot, gradients
 //! and colour groups exactly), `.gpl` palettes (8-bit RGB; colour groups as `# Group:` comment
-//! headers) and CSS custom properties (written only).
+//! headers) and CSS custom properties (written only). Swatch exchange files (`.ase`) are read
+//! only ([`read_bytes`]).
+
+use std::collections::{HashMap, HashSet};
 
 use serde::{Deserialize, Serialize};
 
@@ -58,6 +61,15 @@ struct NativeFile {
 const NATIVE_FORMAT: &str = "vcswatches";
 const GPL_HEADER: &str = "GIMP Palette";
 const GPL_GROUP: &str = "# Group:";
+const ASE_SIGNATURE: &[u8] = b"ASEF";
+const ASE_GROUP_START: u16 = 0xC001;
+const ASE_GROUP_END: u16 = 0xC002;
+const ASE_COLOR: u16 = 0x0001;
+/// The most colors and groups read from one `.ase` file.
+const ASE_MAX_ENTRIES: usize = 100_000;
+/// The most UTF-16 code units of a name that are kept.
+const ASE_MAX_NAME: usize = 1024;
+const ASE_CUT_SHORT: &str = "the swatch exchange file is cut short";
 
 /// Write `lib` in `format`. Pattern swatches (their tiles live in a document) and None are left
 /// out; `.gpl` keeps solid colours only, as 8-bit RGB.
@@ -199,16 +211,34 @@ pub fn sniff(text: &str) -> bool {
     t.starts_with(GPL_HEADER) || (t.starts_with('{') && t.contains(NATIVE_FORMAT))
 }
 
+/// Read the bytes of a library file: a swatch exchange `.ase` file, else a `.vcswatches` or
+/// `.gpl` library ([`read`]). `name` names it when the file doesn't.
+pub fn read_bytes(bytes: &[u8], name: &str) -> Result<SwatchLibrary, String> {
+    if bytes.starts_with(ASE_SIGNATURE) {
+        return read_ase(bytes, name);
+    }
+    read(&String::from_utf8_lossy(bytes), name)
+}
+
+/// Are `bytes` a library [`read_bytes`] understands? Text that isn't valid UTF-8 is checked as
+/// [`read_bytes`] reads it, with the invalid bytes replaced (its first KiB is enough).
+pub fn sniff_bytes(bytes: &[u8]) -> bool {
+    bytes.starts_with(ASE_SIGNATURE)
+        || std::str::from_utf8(bytes).is_ok_and(sniff)
+        || sniff(&String::from_utf8_lossy(bytes.get(..1024).unwrap_or(bytes)))
+}
+
 /// `.gpl`: `Name:` names the library, `# Group: name` starts a colour group, other `#` lines and
-/// headers (`Columns:`) are skipped, as are lines that aren't `r g b [name]`. Unnamed colours are
-/// named by their values; repeated names get a number.
+/// headers (`Columns:`) are skipped, as are lines that aren't `r g b [name]`. Unnamed colors are
+/// named by their values and unnamed groups "Color Group"; a name a color or group already has gets
+/// a number ([`UniqueNames`]).
 fn read_gpl(text: &str, fallback: &str) -> SwatchLibrary {
     let mut lib = SwatchLibrary { name: fallback.into(), ..Default::default() };
-    let mut names: Vec<String> = vec![];
+    let mut names = UniqueNames::default();
     for line in text.lines().skip(1) {
         let line = line.trim();
         if let Some(g) = line.strip_prefix(GPL_GROUP) {
-            lib.groups.push(SwatchGroup { name: g.trim().to_string(), swatches: vec![] });
+            lib.groups.push(SwatchGroup { name: names.unique(group_name(g)), swatches: vec![] });
             continue;
         }
         if let Some(n) = line.strip_prefix("Name:") {
@@ -221,9 +251,7 @@ fn read_gpl(text: &str, fallback: &str) -> SwatchLibrary {
         let [r, g, b] = rgb[..] else { continue };
         let rest = words[3..].join(" ");
         let base = if rest.is_empty() { format!("R={r} G={g} B={b}") } else { rest };
-        let name = (1..).map(|i| if i == 1 { base.clone() } else { format!("{base} {i}") }).find(|n| !names.contains(n)).unwrap_or(base);
-        names.push(name.clone());
-        let w = Swatch { name, paint: Paint::solid(Color::rgb8(r, g, b)), global: false, spot: false };
+        let w = Swatch { name: names.unique(base), paint: Paint::solid(Color::rgb8(r, g, b)), global: false, spot: false };
         match lib.groups.last_mut() {
             Some(grp) => grp.swatches.push(w),
             None => lib.swatches.push(w),
@@ -232,6 +260,184 @@ fn read_gpl(text: &str, fallback: &str) -> SwatchLibrary {
     lib
 }
 
+/// `.ase`, from public descriptions of the format: the layout from
+/// <https://www.selapa.net/swatches/colors/fileformats.php>, the component ranges from
+/// <https://github.com/nsfmc/swatch>. After the signature come, big-endian, a `u16` major (1) and
+/// minor version, a `u32` block count and the blocks, each a `u16` type, a `u32` body length and
+/// the body. A group start's body is a name. A color's body is a name, a four-character model
+/// (`RGB `, `CMYK`, `LAB `, `Gray`), its components as `f32` (3, 4, 3 and 1 of them) and a `u16`
+/// color type (0 global, 1 spot, 2 process). RGB, CMYK and gray components run from 0 to 1 (a
+/// gray level of 1 is white), Lab lightness from 0 to 1 and a and b from −128 to 127. A lightness
+/// above 1 is read as L* itself. A name is a `u16` count of UTF-16 code units, the terminating zero
+/// included, then the units.
+///
+/// Color groups become groups: a group start inside an open group ends that group, and a group
+/// left open ends with the file. Blocks of other types and colors in other models are skipped.
+/// Unnamed colors are named by their values and unnamed groups "Color Group"; a name a color or
+/// group already has gets a number ([`UniqueNames`]). A truncated file, a major version other than
+/// 1 or more than [`ASE_MAX_ENTRIES`] colors and groups is an error.
+fn read_ase(bytes: &[u8], fallback: &str) -> Result<SwatchLibrary, String> {
+    let mut data = AseData(bytes);
+    data.bytes(ASE_SIGNATURE.len())?;
+    let (major, minor) = (data.u16()?, data.u16()?);
+    if major != 1 {
+        return Err(format!("swatch exchange version {major}.{minor} isn't supported (only 1.x)"));
+    }
+    let blocks = data.u32()?;
+    let mut lib = SwatchLibrary { name: fallback.into(), ..Default::default() };
+    let mut names = UniqueNames::default();
+    let (mut in_group, mut entries) = (false, 0usize);
+    for _ in 0..blocks {
+        let kind = data.u16()?;
+        let len = usize::try_from(data.u32()?).unwrap_or(usize::MAX);
+        let mut body = AseData(data.bytes(len)?);
+        if matches!(kind, ASE_GROUP_START | ASE_COLOR) {
+            entries += 1;
+            if entries > ASE_MAX_ENTRIES {
+                return Err(format!("the swatch exchange file holds more than {ASE_MAX_ENTRIES} colors and groups"));
+            }
+        }
+        match kind {
+            ASE_GROUP_START => {
+                lib.groups.push(SwatchGroup { name: names.unique(group_name(&body.name()?)), swatches: vec![] });
+                in_group = true;
+            }
+            ASE_GROUP_END => in_group = false,
+            ASE_COLOR => {
+                let Some(mut w) = ase_swatch(&mut body)? else { continue };
+                w.name = names.unique(std::mem::take(&mut w.name));
+                match lib.groups.last_mut().filter(|_| in_group) {
+                    Some(g) => g.swatches.push(w),
+                    None => lib.swatches.push(w),
+                }
+            }
+            // Other blocks are skipped.
+            _ => {}
+        }
+    }
+    Ok(lib)
+}
+
+/// The swatch of an `.ase` color block, `None` for a model other than RGB, CMYK, Lab and Gray.
+/// Components are clamped to their ranges.
+fn ase_swatch(body: &mut AseData) -> Result<Option<Swatch>, String> {
+    let name = body.name()?;
+    let unit = |v: f32| v.clamp(0.0, 1.0);
+    let color = match &body.array::<4>()? {
+        b"RGB " => {
+            let [r, g, b] = [body.f32()?, body.f32()?, body.f32()?];
+            Color::rgb(unit(r), unit(g), unit(b))
+        }
+        b"CMYK" => {
+            let [c, m, y, k] = [body.f32()?, body.f32()?, body.f32()?, body.f32()?];
+            Color::cmyk(unit(c), unit(m), unit(y), unit(k))
+        }
+        // Lightness is stored as a fraction of 100. Some writers store L* itself, which shows as a
+        // value above 1.
+        b"LAB " => {
+            let [l, a, b] = [body.f32()?, body.f32()?, body.f32()?];
+            let l = if l > 1.0 { l.min(100.0) } else { unit(l) * 100.0 };
+            Color::lab(l, a.clamp(-128.0, 127.0), b.clamp(-128.0, 127.0))
+        }
+        // A gray level (1 is white); a gray color holds its ink.
+        b"Gray" => Color::gray(1.0 - unit(body.f32()?)),
+        _ => return Ok(None),
+    };
+    // Some writers leave the color type out, which makes a process color.
+    let kind = if body.0.len() >= 2 { body.u16()? } else { 2 };
+    // Spot colors are global.
+    let (global, spot) = match kind {
+        0 => (true, false),
+        1 => (true, true),
+        _ => (false, false),
+    };
+    let name = if name.is_empty() { value_name(color) } else { name };
+    Ok(Some(Swatch { name, paint: Paint::solid(color), global, spot }))
+}
+
+/// A color's values in its own model, as new swatches are named ("C=10 M=20 Y=30 K=0",
+/// "R=255 G=128 B=0", "Gray K=40", "L=52 a=70 b=-30").
+fn value_name(c: Color) -> String {
+    let pct = |v: f32| (v * 100.0).round();
+    let byte = |v: f32| (v * 255.0).round();
+    match c {
+        Color::Cmyk { c, m, y, k } => format!("C={} M={} Y={} K={}", pct(c), pct(m), pct(y), pct(k)),
+        Color::Rgb { r, g, b } => format!("R={} G={} B={}", byte(r), byte(g), byte(b)),
+        Color::Gray { k } => format!("Gray K={}", pct(k)),
+        // `+ 0.0` turns a rounded -0 into 0.
+        Color::Lab { l, a, b } => format!("L={} a={} b={}", l.round() + 0.0, a.round() + 0.0, b.round() + 0.0),
+    }
+}
+
+/// `.ase` data, read field by field; reading past its end is an error.
+struct AseData<'a>(&'a [u8]);
+
+impl<'a> AseData<'a> {
+    fn bytes(&mut self, n: usize) -> Result<&'a [u8], String> {
+        let (head, rest) = self.0.split_at_checked(n).ok_or(ASE_CUT_SHORT)?;
+        self.0 = rest;
+        Ok(head)
+    }
+    fn array<const N: usize>(&mut self) -> Result<[u8; N], String> {
+        let (head, rest) = self.0.split_first_chunk::<N>().ok_or(ASE_CUT_SHORT)?;
+        self.0 = rest;
+        Ok(*head)
+    }
+    fn u16(&mut self) -> Result<u16, String> {
+        self.array().map(u16::from_be_bytes)
+    }
+    fn u32(&mut self) -> Result<u32, String> {
+        self.array().map(u32::from_be_bytes)
+    }
+    /// A component; one that isn't a finite number reads as 0.
+    fn f32(&mut self) -> Result<f32, String> {
+        let v = f32::from_be_bytes(self.array()?);
+        Ok(if v.is_finite() { v } else { 0.0 })
+    }
+    /// A name up to its terminating zero, trimmed. A block that ends before it has no name.
+    fn name(&mut self) -> Result<String, String> {
+        if self.0.is_empty() {
+            return Ok(String::new());
+        }
+        let n = usize::from(self.u16()?);
+        let (units, _) = self.bytes(n * 2)?.as_chunks::<2>();
+        let units: Vec<u16> = units.iter().take(ASE_MAX_NAME).map(|u| u16::from_be_bytes(*u)).take_while(|&u| u != 0).collect();
+        Ok(String::from_utf16_lossy(&units).trim().to_string())
+    }
+}
+
+/// A group's name as a file gives it, trimmed; "Color Group" when it has none.
+fn group_name(name: &str) -> String {
+    let name = name.trim();
+    if name.is_empty() { "Color Group".into() } else { name.to_string() }
+}
+
+/// The swatch and group names a reader has handed out. Swatches and color groups share one set of
+/// names, as in a document, and a name already taken gets the first free number ("Black 2").
+#[derive(Default)]
+struct UniqueNames {
+    taken: HashSet<String>,
+    /// The last number tried for each repeated name.
+    last: HashMap<String, usize>,
+}
+
+impl UniqueNames {
+    fn unique(&mut self, base: String) -> String {
+        if self.taken.insert(base.clone()) {
+            return base;
+        }
+        // Each pass tries the next number, and only finitely many names are taken.
+        let n = self.last.entry(base.clone()).or_insert(1);
+        loop {
+            *n += 1;
+            let name = format!("{base} {n}");
+            if self.taken.insert(name.clone()) {
+                return name;
+            }
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -294,6 +500,11 @@ mod tests {
         assert_eq!(names, ["Sky Blue", "R=10 G=20 B=30", "Black", "Black 2"]);
         assert_eq!(lib.swatches[0].paint.color(), Some(Color::rgb8(0, 128, 255)));
         assert_eq!(read("GIMP Palette\n1 2 3 x\n", "Fallback").unwrap().name, "Fallback");
+        // Colors and groups share names; an unnamed group is "Color Group".
+        let lib = read("GIMP Palette\n0 0 0 Black\n# Group: Black\n1 1 1 Black\n# Group:\n", "x").unwrap();
+        let groups: Vec<(&str, Vec<&str>)> =
+            lib.groups.iter().map(|g| (g.name.as_str(), g.swatches.iter().map(|w| w.name.as_str()).collect())).collect();
+        assert_eq!(groups, [("Black 2", vec!["Black 3"]), ("Color Group", vec![])]);
     }
 
     #[test]
@@ -321,4 +532,117 @@ mod tests {
         assert!(text.contains("--red: #000000;") && text.contains("--red-2: #000000;"));
         assert!(read(&text, "x").is_err(), "CSS is written only");
     }
+
+    /// A swatch exchange file of `blocks` (type, body).
+    fn ase(blocks: &[(u16, Vec<u8>)]) -> Vec<u8> {
+        let mut out = b"ASEF\0\x01\0\0".to_vec();
+        out.extend((blocks.len() as u32).to_be_bytes());
+        for (kind, body) in blocks {
+            out.extend(kind.to_be_bytes());
+            out.extend((body.len() as u32).to_be_bytes());
+            out.extend(body);
+        }
+        out
+    }
+
+    /// A name as `.ase` stores it.
+    fn ase_name(name: &str) -> Vec<u8> {
+        let units: Vec<u16> = name.encode_utf16().chain([0]).collect();
+        let mut out = (units.len() as u16).to_be_bytes().to_vec();
+        out.extend(units.iter().flat_map(|u| u.to_be_bytes()));
+        out
+    }
+
+    /// A color block: name, model, components and color type.
+    fn ase_color(name: &str, model: &[u8; 4], values: &[f32], kind: u16) -> (u16, Vec<u8>) {
+        let mut body = ase_name(name);
+        body.extend(model);
+        body.extend(values.iter().flat_map(|v| v.to_be_bytes()));
+        body.extend(kind.to_be_bytes());
+        (ASE_COLOR, body)
+    }
+
+    #[test]
+    fn ase_reads_color_models_kinds_and_groups() {
+        let bytes = ase(&[
+            ase_color("Sky", b"RGB ", &[0.0, 0.5, 1.0], 0),
+            ase_color("Ink", b"CMYK", &[1.0, 0.5, 0.0, 0.2], 1),
+            (ASE_GROUP_START, ase_name("Neutrals")),
+            ase_color("Mist", b"Gray", &[0.75], 2),
+            ase_color("Clay", b"LAB ", &[0.5, 20.0, -30.0], 2),
+            (ASE_GROUP_END, vec![]),
+            ase_color("Paper", b"RGB ", &[1.0, 1.0, 1.0], 2),
+        ]);
+        assert!(sniff_bytes(&bytes));
+        let sw = |name: &str, color, global, spot| Swatch { name: name.into(), paint: Paint::solid(color), global, spot };
+        let expected = SwatchLibrary {
+            name: "Brand".into(),
+            swatches: vec![
+                sw("Sky", Color::rgb(0.0, 0.5, 1.0), true, false),
+                sw("Ink", Color::cmyk(1.0, 0.5, 0.0, 0.2), true, true),
+                sw("Paper", Color::WHITE, false, false),
+            ],
+            groups: vec![SwatchGroup {
+                name: "Neutrals".into(),
+                swatches: vec![sw("Mist", Color::gray(0.25), false, false), sw("Clay", Color::lab(50.0, 20.0, -30.0), false, false)],
+            }],
+        };
+        assert_eq!(read_bytes(&bytes, "Brand").unwrap(), expected, "named after the file; 0 global, 1 spot, 2 process");
+        // A lightness above 1 is L* itself.
+        let deep = read_bytes(&ase(&[ase_color("Deep", b"LAB ", &[53.0, 20.0, -30.0], 2)]), "x").unwrap();
+        assert_eq!(deep.swatches[0].paint.color(), Some(Color::lab(53.0, 20.0, -30.0)));
+        // Text libraries read through the same call, also when they aren't valid UTF-8.
+        assert!(sniff_bytes(b"GIMP Palette\n1 2 3 x\n") && !sniff_bytes(b"ASE") && !sniff_bytes(&[0xff, 0xfe, 0]));
+        assert_eq!(read_bytes(b"GIMP Palette\n1 2 3 x\n", "F").unwrap().swatches.len(), 1);
+        let latin1 = b"GIMP Palette\n1 2 3 Caf\xe9\n";
+        assert!(sniff_bytes(latin1));
+        assert_eq!(read_bytes(latin1, "F").unwrap().swatches.len(), 1);
+    }
+
+    #[test]
+    fn ase_names_unnamed_and_repeated_entries_and_skips_other_blocks() {
+        let mut untyped = ase_color("Plain", b"RGB ", &[0.2, 0.4, 0.6], 2);
+        untyped.1.truncate(untyped.1.len() - 2);
+        let bytes = ase(&[
+            ase_color("Café 🎨", b"RGB ", &[1.0, 0.0, 0.0], 2),
+            ase_color("", b"CMYK", &[0.1, 0.2, 0.3, 0.0], 2),
+            ase_color(" Red ", b"RGB ", &[2.0, -1.0, f32::NAN], 0),
+            ase_color("Red", b"Gray", &[0.0], 2),
+            untyped,
+            ase_color("Hue", b"HSB ", &[0.1, 0.2, 0.3], 2),
+            (0x0042, vec![1, 2, 3]),
+            (ASE_GROUP_END, vec![]),
+            (ASE_GROUP_START, ase_name("")),
+            (ASE_GROUP_START, ase_name("Red")),
+            ase_color("Red", b"Gray", &[1.0], 2),
+        ]);
+        let lib = read_bytes(&bytes, "x").unwrap();
+        let names: Vec<&str> = lib.swatches.iter().map(|w| w.name.as_str()).collect();
+        assert_eq!(names, ["Café 🎨", "C=10 M=20 Y=30 K=0", "Red", "Red 2", "Plain"], "an HSB color and an unknown block are skipped");
+        assert_eq!(lib.swatches[2].paint.color(), Some(Color::rgb(1.0, 0.0, 0.0)), "clamped, NaN read as 0");
+        assert!(lib.swatches[2].global && !lib.swatches[4].global, "without a color type: process");
+        // A group start ends the open group, and groups and colors share names.
+        let groups: Vec<(&str, Vec<&str>)> =
+            lib.groups.iter().map(|g| (g.name.as_str(), g.swatches.iter().map(|w| w.name.as_str()).collect())).collect();
+        assert_eq!(groups, [("Color Group", vec![]), ("Red 3", vec!["Red 4"])]);
+        assert_eq!(lib.groups[1].swatches[0].paint.color(), Some(Color::gray(0.0)), "gray level 1 is white");
+    }
+
+    #[test]
+    fn damaged_ase_files_are_errors() {
+        let good = ase(&[(ASE_GROUP_START, ase_name("G")), ase_color("Sky", b"RGB ", &[0.0, 0.5, 1.0], 0)]);
+        assert_eq!(read_bytes(&good, "x").unwrap().len(), 1);
+        for n in ASE_SIGNATURE.len()..good.len() {
+            assert!(read_bytes(&good[..n], "x").is_err(), "cut at {n}");
+        }
+        let mut v2 = good.clone();
+        v2[5] = 2;
+        assert!(read_bytes(&v2, "x").unwrap_err().contains("2.0"), "version 2.0");
+        // Too many colors, or too many groups (empty group starts take 6 bytes each).
+        let colors: Vec<(u16, Vec<u8>)> = (0..=ASE_MAX_ENTRIES).map(|_| ase_color("Gray", b"Gray", &[0.5], 2)).collect();
+        assert!(read_bytes(&ase(&colors), "x").unwrap_err().contains("more than"));
+        let groups: Vec<(u16, Vec<u8>)> = (0..=ASE_MAX_ENTRIES).map(|_| (ASE_GROUP_START, vec![])).collect();
+        assert!(read_bytes(&ase(&groups), "x").unwrap_err().contains("more than"));
+        assert_eq!(read_bytes(&ase(&groups[1..]), "x").unwrap().groups.len(), ASE_MAX_ENTRIES, "up to the limit");
+    }
 }

crates/engine/src/cmd/stylelib.rs

@@ -70,8 +70,8 @@ pub fn specs() -> Vec<CommandSpec> {
 
 impl LibraryFile for StyleLibrary {
     const EXTS: &'static [&'static str] = &[STYLES_EXT];
-    fn read(text: &str, stem: &str) -> std::result::Result<Self, String> {
-        style_libs::read(text, stem)
+    fn read(bytes: &[u8], stem: &str) -> std::result::Result<Self, String> {
+        style_libs::read(&String::from_utf8_lossy(bytes), stem)
     }
     fn name(&self) -> &str {
         &self.name

crates/engine/src/cmd/swatchlib.rs

@@ -69,7 +69,7 @@ pub fn specs() -> Vec<CommandSpec> {
             "Other Library…",
             ["Window", "Swatch Libraries"],
             None,
-            "{path? | data?: file text | dataBase64?, name?: file name (default: the path's)} load a .vcswatches or .gpl library, or the swatches of any document VectorCraft opens (see document.formats), for the library panel (Window → Swatch Libraries lists it until the app quits) → {library: id, name, count}",
+            "{path? | data?: file text | dataBase64?, name?: file name (default: the path's)} load a .vcswatches, .gpl or .ase (swatch exchange) library, or the swatches of any document VectorCraft opens (see document.formats), for the library panel (Window → Swatch Libraries lists it until the app quits) → {library: id, name, count}",
             always,
             load
         ),
@@ -98,23 +98,24 @@ struct Extra<L> {
 pub trait LibraryFile: Sized {
     /// The extensions of its files (lower case).
     const EXTS: &'static [&'static str];
-    /// Read a library file whose name without the extension is `stem` (an unnamed library's name).
-    fn read(text: &str, stem: &str) -> std::result::Result<Self, String>;
+    /// Read the bytes of a library file whose name without the extension is `stem` (an unnamed
+    /// library's name).
+    fn read(bytes: &[u8], stem: &str) -> std::result::Result<Self, String>;
     fn name(&self) -> &str;
 }
 
 impl LibraryFile for SwatchLibrary {
     const EXTS: &'static [&'static str] = LIBRARY_EXTS;
-    fn read(text: &str, stem: &str) -> std::result::Result<Self, String> {
-        palette_io::read(text, stem)
+    fn read(bytes: &[u8], stem: &str) -> std::result::Result<Self, String> {
+        palette_io::read_bytes(bytes, stem)
     }
     fn name(&self) -> &str {
         &self.name
     }
 }
 
-/// The extensions of library files [`palette_io::read`] reads.
-pub const LIBRARY_EXTS: &[&str] = &["vcswatches", "gpl"];
+/// The extensions of library files [`palette_io::read_bytes`] reads.
+pub const LIBRARY_EXTS: &[&str] = &["vcswatches", "gpl", "ase"];
 
 impl<L: LibraryFile> Libraries<L> {
     pub fn user_dir(&self) -> Option<&str> {
@@ -133,7 +134,7 @@ impl<L: LibraryFile> Libraries<L> {
         let Some(dir) = self.user_dir.clone() else { return };
         for path in library_files(&dir, L::EXTS) {
             let file = file_name(&path);
-            let Some(lib) = read_file(&path).ok().and_then(|b| L::read(&String::from_utf8_lossy(&b), stem(&file)).ok()) else { continue };
+            let Some(lib) = read_file(&path).ok().and_then(|b| L::read(&b, stem(&file)).ok()) else { continue };
             let info = LibraryInfo { id: format!("user/{file}"), name: lib.name().to_string(), category: "user" };
             self.extra.push(Extra { info, path: Some(path), lib: Arc::new(lib) });
         }
@@ -351,12 +352,11 @@ fn load(s: &mut Session, p: &Value) -> Result<Value> {
     const C: &str = "swatch.library.load";
     let (info, lib) = s.swatch_libraries.load(p, C, |bytes, file| {
         // A library file, or a document whose swatches become the library.
-        match std::str::from_utf8(bytes).ok().filter(|t| palette_io::sniff(t)) {
-            Some(t) => palette_io::read(t, stem(file)).map_err(|e| bad(C, e)),
-            None => {
-                let doc = super::fileio::load(file, bytes).map_err(|e| bad(C, e.to_string()))?.doc;
-                document_library(&doc, &[], stem(file).to_string(), C)
-            }
+        if palette_io::sniff_bytes(bytes) {
+            palette_io::read_bytes(bytes, stem(file)).map_err(|e| bad(C, e))
+        } else {
+            let doc = super::fileio::load(file, bytes).map_err(|e| bad(C, e.to_string()))?.doc;
+            document_library(&doc, &[], stem(file).to_string(), C)
         }
     })?;
     Ok(json!({"library": info.id, "name": info.name, "count": lib.len()}))
@@ -417,12 +417,17 @@ fn add(s: &mut Session, p: &Value) -> Result<Value> {
     } else {
         s.edit("Add to Swatches", |d, _| {
             let mut out = vec![];
+            // Each library group goes into one document group: the group of that name the document
+            // already had, or one made here.
+            let before = d.swatch_groups.len();
+            let mut placed: Vec<(&str, usize)> = vec![];
             for (group, w) in fresh {
                 let name = d.free_swatch_name(&w.name);
                 let sw = Swatch { name: name.clone(), ..(*w).clone() };
                 match group {
                     Some(g) => {
-                        let i = match d.swatch_groups.iter().position(|x| x.name == *g) {
+                        let found = placed.iter().find(|(n, _)| *n == g).map(|&(_, i)| i);
+                        let i = match found.or_else(|| d.swatch_groups.iter().take(before).position(|x| x.name == *g)) {
                             Some(i) => i,
                             None => {
                                 let name = d.free_swatch_name(g);
@@ -430,6 +435,9 @@ fn add(s: &mut Session, p: &Value) -> Result<Value> {
                                 d.swatch_groups.len() - 1
                             }
                         };
+                        if found.is_none() {
+                            placed.push((g, i));
+                        }
                         d.swatch_groups[i].swatches.push(sw);
                     }
                     None => d.swatches.push(sw),

crates/engine/src/tests_swatchlib.rs

@@ -197,6 +197,74 @@ fn another_documents_swatches_load_as_a_library() {
     assert!(s.execute("swatch.library.load", &json!({"data": "hello", "name": "x.txt"})).is_err());
 }
 
+#[test]
+fn swatch_exchange_files_load_add_and_list_as_user_libraries() {
+    let bytes = vectorcraft_testkit::ase::sample();
+    let mut s = session();
+    let r = run(&mut s, "swatch.library.load", json!({"dataBase64": vectorcraft_format::base64_encode(&bytes), "name": "Brand.ase"}));
+    assert_eq!((r["library"].as_str(), r["name"].as_str(), r["count"].as_u64()), (Some("loaded/Brand.ase"), Some("Brand"), Some(4)));
+    let g = run(&mut s, "swatch.library.get", json!({"library": r["library"]}));
+    let swatches = g["swatches"].as_array().unwrap();
+    let kinds: Vec<(&str, bool, bool)> =
+        swatches.iter().map(|w| (w["name"].as_str().unwrap(), w["global"].as_bool().unwrap(), w["spot"].as_bool().unwrap())).collect();
+    assert_eq!(kinds, [("Sky", true, false), ("Ink", true, true), ("Mist", false, false), ("Clay", false, false)]);
+    assert_eq!(swatches[3]["color"], json!({"model": "lab", "l": 50.0, "a": 20.0, "b": -30.0}));
+    // Added to the document, the spot color stays a spot color and the group stays a color group.
+    run(&mut s, "swatch.library.add", json!({"library": r["library"]}));
+    let d = doc(&s);
+    assert!(d.swatch("Ink").is_some_and(|w| w.spot && w.global));
+    assert_eq!(d.swatch_groups.iter().find(|g| g.name == "Neutrals").map(|g| g.swatches.len()), Some(2));
+    // A damaged file is an error from the swatch exchange reader, not from the document loader.
+    let cut = vectorcraft_format::base64_encode(&bytes[..bytes.len() - 1]);
+    let e = s.execute("swatch.library.load", &json!({"dataBase64": cut, "name": "Cut.ase"})).unwrap_err().to_string();
+    assert!(e.contains("cut short"), "{e}");
+    // `.ase` files in the user library folder are User Defined libraries.
+    let dir = temp_dir("ase");
+    std::fs::create_dir_all(&dir).unwrap();
+    std::fs::write(dir.join("Brand.ase"), &bytes).unwrap();
+    s.swatch_libraries.set_user_dir(Some(dir.to_string_lossy().to_string()));
+    let list = run(&mut s, "swatch.library.list", json!({}));
+    let user: Vec<(&str, u64)> = list["libraries"]
+        .as_array()
+        .unwrap()
+        .iter()
+        .filter(|l| l["category"] == "user")
+        .map(|l| (l["id"].as_str().unwrap(), l["count"].as_u64().unwrap()))
+        .collect();
+    assert_eq!(user, [("user/Brand.ase", 4)]);
+    let _ = std::fs::remove_dir_all(dir);
+}
+
+#[test]
+fn a_library_group_stays_one_group_when_a_swatch_has_its_name() {
+    use vectorcraft_testkit::ase::{Block, ase};
+    let mut s = session();
+    assert!(doc(&s).swatch("Blue").is_some(), "a new document has a swatch named Blue");
+    let bytes = ase(&[
+        Block::GroupStart("Blue"),
+        Block::Color("Deep", b"RGB ", &[0.0, 0.0, 0.4], 2),
+        Block::Color("Pale", b"RGB ", &[0.6, 0.7, 1.0], 2),
+        Block::GroupEnd,
+        Block::GroupStart("Blue 2"),
+        Block::Color("Frost", b"RGB ", &[0.9, 0.95, 1.0], 2),
+        Block::GroupEnd,
+    ]);
+    let r = run(&mut s, "swatch.library.load", json!({"dataBase64": vectorcraft_format::base64_encode(&bytes), "name": "Blues.ase"}));
+    run(&mut s, "swatch.library.add", json!({"library": r["library"]}));
+    let groups: Vec<(&str, Vec<&str>)> =
+        doc(&s).swatch_groups.iter().map(|g| (g.name.as_str(), g.swatches.iter().map(|w| w.name.as_str()).collect())).collect();
+    assert!(groups.contains(&("Blue 2", vec!["Deep", "Pale"])), "{groups:?}");
+    assert!(groups.contains(&("Blue 2 2", vec!["Frost"])), "the library's own Blue 2 stays apart: {groups:?}");
+}
+
+#[test]
+fn text_libraries_sent_as_bytes_load_when_they_are_not_valid_utf8() {
+    let mut s = session();
+    let latin1 = vectorcraft_format::base64_encode(b"GIMP Palette\n237 28 36 Rouge fonc\xe9\n");
+    let r = run(&mut s, "swatch.library.load", json!({"dataBase64": latin1, "name": "Rouge.gpl"}));
+    assert_eq!(r["count"], 1);
+}
+
 #[test]
 fn gradient_libraries_are_listed_and_gradient_swatches_rename_and_take_new_gradients() {
     let mut s = session();

crates/engine/tests/import_fuzz.rs

@@ -1,5 +1,5 @@
 //! Untrusted files never crash the app: garbage, truncated, mutated and hostile SVG, PDF and DXF input,
-//! mutated raster images placed with File → Place, and swatch (`.vcswatches`, `.gpl`), graphic style (`.vcstyles`) and flattener preset
+//! mutated raster images placed with File → Place, and swatch (`.vcswatches`, `.gpl`, `.ase`), graphic style (`.vcstyles`) and flattener preset
 //! (`.vcflattener`) libraries, and native files (compressed, damaged, saved for older versions),
 //! must load as an error or as a document that then renders and exports, without a panic; nor may
 //! bitmaps, PDF and text pasted from other apps, nor EMF and WMF pictures (damaged files, records
@@ -529,12 +529,21 @@ fn saved(cmd: &str, params: Value) -> String {
     rich_session().execute(cmd, &params).unwrap()["data"].as_str().unwrap().to_string()
 }
 
+/// `r`, after failing the case if the command panicked. The engine's guard reports a panic as
+/// `EngineError::Internal`.
+fn no_panic(r: Result<Value, vectorcraft_engine::EngineError>) -> Result<Value, vectorcraft_engine::EngineError> {
+    if let Err(vectorcraft_engine::EngineError::Internal { cmd, msg }) = &r {
+        panic!("{cmd} panicked: {msg}");
+    }
+    r
+}
+
 /// Library file `data` loaded with `load`; what it holds is then used on the rich document
 /// (`then`, given the load's result), which renders and exports.
 fn survive_library(what: &str, load: &str, data: &str, then: impl FnOnce(&mut vectorcraft_engine::Session, &Value)) -> Result<(), TestCaseError> {
     survive(what, || {
         let mut s = rich_session();
-        let r = s.execute(load, &json!({"data": data, "name": "fuzz"})).ok()?;
+        let r = no_panic(s.execute(load, &json!({"data": data, "name": "fuzz"}))).ok()?;
         then(&mut s, &r);
         Some((*s.doc().ok()?.doc).clone())
     })
@@ -542,27 +551,55 @@ fn survive_library(what: &str, load: &str, data: &str, then: impl FnOnce(&mut ve
 
 fn swatches(what: &str, data: &str) -> Result<(), TestCaseError> {
     survive_library(what, "swatch.library.load", data, |s, r| {
-        let _ = s.execute("swatch.library.add", &json!({"library": r["library"], "apply": "fill"}));
+        let _ = no_panic(s.execute("swatch.library.add", &json!({"library": r["library"], "apply": "fill"})));
     })
 }
 
 fn styles(what: &str, data: &str) -> Result<(), TestCaseError> {
     survive_library(what, "graphicStyle.loadLibrary", data, |s, r| {
-        let _ = s.execute("select.all", &json!({}));
-        let _ = s.execute("graphicStyle.addFromLibrary", &json!({"library": r["library"], "apply": true}));
+        let _ = no_panic(s.execute("select.all", &json!({})));
+        let _ = no_panic(s.execute("graphicStyle.addFromLibrary", &json!({"library": r["library"], "apply": true})));
     })
 }
 
 fn flattener_presets(what: &str, data: &str) -> Result<(), TestCaseError> {
     survive_library(what, "flattener.presets.import", data, |s, r| {
-        let _ = s.execute("select.all", &json!({}));
+        let _ = no_panic(s.execute("select.all", &json!({})));
         if let Some(name) = r["imported"].get(0) {
-            let _ = s.execute("flattener.preview", &json!({"preset": name, "highlight": "allAffected"}));
-            let _ = s.execute("object.flattenTransparency", &json!({"preset": name, "lineArtPpi": 36, "gradientPpi": 36}));
+            let _ = no_panic(s.execute("flattener.preview", &json!({"preset": name, "highlight": "allAffected"})));
+            let _ = no_panic(s.execute("object.flattenTransparency", &json!({"preset": name, "lineArtPpi": 36, "gradientPpi": 36})));
         }
     })
 }
 
+/// Swatch exchange (`.ase`) bytes loaded as a swatch library, then added to the rich document.
+fn swatch_exchange(what: &str, bytes: &[u8]) -> Result<(), TestCaseError> {
+    survive(what, || {
+        let mut s = rich_session();
+        let load = json!({"dataBase64": vectorcraft_format::base64_encode(bytes), "name": "fuzz.ase"});
+        let r = no_panic(s.execute("swatch.library.load", &load)).ok()?;
+        let _ = no_panic(s.execute("swatch.library.add", &json!({"library": r["library"], "apply": "fill"})));
+        Some((*s.doc().ok()?.doc).clone())
+    })
+}
+
+/// A random swatch exchange block (type, body). The body holds a name, a color model when the block
+/// is a color, and random bytes for the rest.
+fn arb_ase_block() -> impl Strategy<Value = (u16, Vec<u8>)> {
+    let kind = prop::sample::select(vec![0xC001u16, 0xC002, 0x0001, 0x0042]);
+    let model = prop::sample::select(vec![*b"RGB ", *b"CMYK", *b"LAB ", *b"Gray", *b"HSB "]);
+    (kind, "[ -~]{0,8}", model, prop::collection::vec(any::<u8>(), 0..24)).prop_map(|(kind, name, model, rest)| {
+        let units: Vec<u16> = name.encode_utf16().chain([0]).collect();
+        let mut body = (units.len() as u16).to_be_bytes().to_vec();
+        body.extend(units.iter().flat_map(|u| u.to_be_bytes()));
+        if kind == 0x0001 {
+            body.extend(model);
+        }
+        body.extend(rest);
+        (kind, body)
+    })
+}
+
 /// Characters that break JSON and GPL palettes.
 fn arb_edit() -> impl Strategy<Value = (usize, char)> {
     (0usize..20_000, prop::sample::select(vec!['{', '}', '[', ']', '"', ':', ',', '-', '9', 'e', '.', ' ', '\n', '#', 'n', 'x', '\t']))
@@ -596,6 +633,32 @@ proptest! {
         let text = saved("flattener.presets.export", json!({"names": ["high", "medium", "low"]}));
         flattener_presets("mutated flattener presets", &mutate_text(&text, cut, &edits))?;
     }
+
+    #[test]
+    fn swatch_exchange_garbage_never_panics(blocks in prop::collection::vec(arb_ase_block(), 0..12), tail in prop::collection::vec(any::<u8>(), 0..16)) {
+        let mut bytes = b"ASEF\0\x01\0\0".to_vec();
+        bytes.extend((blocks.len() as u32).to_be_bytes());
+        for (kind, body) in &blocks {
+            bytes.extend(kind.to_be_bytes());
+            bytes.extend((body.len() as u32).to_be_bytes());
+            bytes.extend(body);
+        }
+        bytes.extend(tail);
+        swatch_exchange("swatch exchange garbage", &bytes)?;
+    }
+
+    #[test]
+    fn mutated_swatch_exchange_files_never_panic(cut in prop::option::of(0usize..200), edits in prop::collection::vec((0usize..200, any::<u8>()), 0..12)) {
+        let mut bytes = vectorcraft_testkit::ase::sample();
+        for (at, b) in edits {
+            let n = bytes.len();
+            bytes[at % n] = b;
+        }
+        if let Some(cut) = cut {
+            bytes.truncate(cut);
+        }
+        swatch_exchange("mutated swatch exchange file", &bytes)?;
+    }
 }
 
 /// A small image of each raster format Place reads, with resolution metadata where it has some.
@@ -704,8 +767,8 @@ proptest! {
 fn pdf_presets(what: &str, data: &str) -> Result<(), TestCaseError> {
     survive_library(what, "pdf.preset.import", data, |s, r| {
         for name in r["imported"].as_array().into_iter().flatten() {
-            let _ = s.execute("document.exportPdf", &json!({"preset": name}));
-            let _ = s.execute("document.save", &json!({"format": "ai", "preset": name}));
+            let _ = no_panic(s.execute("document.exportPdf", &json!({"preset": name})));
+            let _ = no_panic(s.execute("document.save", &json!({"format": "ai", "preset": name})));
         }
     })
 }
@@ -1219,14 +1282,14 @@ proptest! {
 /// each one imported.
 fn print_presets(what: &str, data: &str) -> Result<(), TestCaseError> {
     survive_library(what, "print.presets.import", data, |s, r| {
-        let list = s.execute("print.presets.list", &json!({})).unwrap_or_default();
+        let list = no_panic(s.execute("print.presets.list", &json!({}))).unwrap_or_default();
         for name in r["imported"].as_array().into_iter().flatten() {
             let Some(p) = list["presets"].as_array().into_iter().flatten().find(|p| &p["name"] == name) else { continue };
             let settings = json!({ "settings": p["settings"] });
-            let pages = s.execute("print.preview", &settings).ok().and_then(|v| v["pages"].as_u64());
-            let _ = s.execute("print.setup", &settings);
+            let pages = no_panic(s.execute("print.preview", &settings)).ok().and_then(|v| v["pages"].as_u64());
+            let _ = no_panic(s.execute("print.setup", &settings));
             if pages.is_some_and(|n| n <= 8) {
-                let _ = s.execute("file.print", &settings);
+                let _ = no_panic(s.execute("file.print", &settings));
             }
         }
     })
@@ -1256,9 +1319,11 @@ proptest! {
 fn perspective_presets(what: &str, data: &str) -> Result<(), TestCaseError> {
     survive_library(what, "perspective.presets.import", data, |s, r| {
         for name in r["imported"].as_array().into_iter().flatten() {
-            let _ = s.execute("perspective.grid.preset", &json!({"name": name}));
-            let _ = s.execute("perspective.grid.define", &json!({"name": name, "gridline": 3}));
-            let _ = s.execute("perspective.draw", &json!({"command": "shape.rectangle", "params": {"x": 300, "y": 400, "width": 40, "height": 30}}));
+            let _ = no_panic(s.execute("perspective.grid.preset", &json!({"name": name})));
+            let _ = no_panic(s.execute("perspective.grid.define", &json!({"name": name, "gridline": 3})));
+            let _ = no_panic(
+                s.execute("perspective.draw", &json!({"command": "shape.rectangle", "params": {"x": 300, "y": 400, "width": 40, "height": 30}})),
+            );
         }
     })
 }

crates/svg/src/import.rs

@@ -33,6 +33,7 @@ pub(crate) fn import(svg: &str, opts: &ImportOptions) -> Result<(Document, Vec<S
     let xml = roxmltree::Document::parse_with_options(svg, roxmltree::ParsingOptions { allow_dtd: true, ..Default::default() })
         .map_err(|e| SvgError::Parse(e.to_string()))?;
     let units = RootUnits::of(xml.root_element());
+    let root_name = root_layer_name(xml.root_element());
     let mut warnings = found.warnings;
     let (src, slots) = text::prepare(svg, &xml, units.dpi, &mut warnings);
     let files = found.files;
@@ -141,11 +142,17 @@ pub(crate) fn import(svg: &str, opts: &ImportOptions) -> Result<(Document, Vec<S
             im.doc.layers.push(Arc::new(l));
         }
     } else {
+        // An export of a one-layer document names the layer on the root element, its art (groups
+        // among it) loose inside: the one layer takes that name.
         let children = im.children(top, base);
-        if let Some(l) = im.doc.layers.first_mut()
-            && let Some(ch) = Arc::make_mut(l).children_mut()
-        {
-            *ch = children;
+        if let Some(l) = im.doc.layers.first_mut() {
+            let l = Arc::make_mut(l);
+            if let Some(ch) = l.children_mut() {
+                *ch = children;
+            }
+            if root_name.is_some() {
+                l.name = root_name;
+            }
         }
     }
     if !im.sublayer_groups.is_empty() {
@@ -163,6 +170,13 @@ pub(crate) const SUBLAYER: &str = "data-vc-layer";
 /// The Inkscape namespace (its layers and their labels).
 const INKSCAPE: &str = "http://www.inkscape.org/namespaces/inkscape";
 
+/// The layer name on root element `root` (`<svg id="Main">`, or its `data-name`), as exports of
+/// one-layer documents write it. An Inkscape root's id (`svg8`) is one Inkscape made up, not a name.
+fn root_layer_name(root: XNode) -> Option<String> {
+    let id = root.attribute("id").filter(|_| root.attribute((INKSCAPE, "version")).is_none());
+    root.attribute("data-name").or(id).map(str::trim).filter(|n| !n.is_empty()).map(str::to_string)
+}
+
 /// Is element `g` a `<g>` marked as a layer ([`SUBLAYER`])? Only one with an id counts: the id (or
 /// the label beside it) is its name.
 fn marked_layer(g: XNode) -> bool {

crates/svg/tests/symbols_layers.rs

@@ -1,7 +1,8 @@
 //! Symbols export as one `<symbol>` def and a `<use>` per instance (instances the def can't stand
 //! for get their own art), hidden layers and objects are kept hidden when asked and come back
 //! hidden with their `data-*` attributes, clipped layers come in as clipping layers, layers and
-//! sublayers keep their names and nesting, and the editing data notices edits made elsewhere.
+//! sublayers keep their names and nesting (a one-layer file's from its root element), and the
+//! editing data notices edits made elsewhere.
 // Integration tests: unwrapping and panicking on failure is fine here, unlike in shipped code (AGENTS.md › Robustness).
 #![allow(clippy::unwrap_used, clippy::expect_used, clippy::panic)]
 
@@ -482,6 +483,25 @@ fn sublayers_round_trip() {
     );
 }
 
+#[test]
+fn a_root_element_names_the_one_layer() {
+    // A one-layer document exported with its art loose under the root, which carries the name.
+    let svg = r##"<svg version="1.1" id="Main" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 300">
+  <rect x="20" y="50" width="120" height="60" style="fill:none;stroke:#000;stroke-width:4"/>
+  <g id="HiddenSub" style="display:none;"><circle cx="45" cy="175" r="25"/></g>
+</svg>"##;
+    assert_eq!(outline(&import(svg).unwrap()), ["Layer Main", "  Path", "  Group HiddenSub (hidden)", "    Path"]);
+    // `data-name` when the id can't hold the name.
+    let named = svg.replace("id=\"Main\"", "id=\"Main_Art\" data-name=\"Main Art\"");
+    assert_eq!(import(&named).unwrap().layers[0].name.as_deref(), Some("Main Art"));
+    let names = |svg: &str| import(svg).unwrap().layers.iter().map(|l| l.name.clone().unwrap()).collect::<Vec<_>>();
+    // Not when the groups at the top are the layers.
+    assert_eq!(names(&svg.replace("<rect", "<g id=\"Art\"><rect").replace("stroke-width:4\"/>", "stroke-width:4\"/></g>")), ["Art", "HiddenSub"]);
+    // Nor from the id Inkscape gives its root.
+    let inkscape = svg.replace("id=\"Main\"", "id=\"svg8\" xmlns:inkscape=\"http://www.inkscape.org/namespaces/inkscape\" inkscape:version=\"1.3\"");
+    assert_eq!(names(&inkscape), ["Layer 1"]);
+}
+
 #[test]
 fn marked_groups_are_sublayers_only_in_layers() {
     // Inkscape marks its layers and sublayers; one marked group in a plain group stays a group.

crates/testkit/src/ase.rs

@@ -0,0 +1,61 @@
+//! Hand-written swatch exchange (`.ase`) files for swatch library tests: version 1.0, big-endian,
+//! with colors in each model and color type, and color groups.
+
+/// One block of a swatch exchange file.
+#[derive(Clone, Debug)]
+pub enum Block<'a> {
+    /// A color group starts (its name).
+    GroupStart(&'a str),
+    /// The open color group ends.
+    GroupEnd,
+    /// A color: its name, model (`b"RGB "`, `b"CMYK"`, `b"LAB "` or `b"Gray"`), components and
+    /// color type (0 global, 1 spot, 2 process).
+    Color(&'a str, &'a [u8; 4], &'a [f32], u16),
+}
+
+/// A name: a `u16` count of UTF-16 code units, the terminating zero included, then the units.
+fn name(out: &mut Vec<u8>, name: &str) {
+    let units: Vec<u16> = name.encode_utf16().chain([0]).collect();
+    out.extend(u16::try_from(units.len()).unwrap().to_be_bytes());
+    out.extend(units.iter().flat_map(|u| u.to_be_bytes()));
+}
+
+/// A swatch exchange file of `blocks`.
+pub fn ase(blocks: &[Block]) -> Vec<u8> {
+    let mut out = b"ASEF\0\x01\0\0".to_vec();
+    out.extend(u32::try_from(blocks.len()).unwrap().to_be_bytes());
+    for b in blocks {
+        let mut body = vec![];
+        let kind: u16 = match b {
+            Block::GroupStart(n) => {
+                name(&mut body, n);
+                0xC001
+            }
+            Block::GroupEnd => 0xC002,
+            Block::Color(n, model, values, kind) => {
+                name(&mut body, n);
+                body.extend(*model);
+                body.extend(values.iter().flat_map(|v| v.to_be_bytes()));
+                body.extend(kind.to_be_bytes());
+                0x0001
+            }
+        };
+        out.extend(kind.to_be_bytes());
+        out.extend(u32::try_from(body.len()).unwrap().to_be_bytes());
+        out.extend(body);
+    }
+    out
+}
+
+/// A library of four colors: "Sky" (global RGB) and "Ink" (spot CMYK), then the group "Neutrals"
+/// of the process colors "Mist" (Gray, 25% ink) and "Clay" (Lab 50, 20, −30).
+pub fn sample() -> Vec<u8> {
+    ase(&[
+        Block::Color("Sky", b"RGB ", &[0.0, 0.5, 1.0], 0),
+        Block::Color("Ink", b"CMYK", &[1.0, 0.5, 0.0, 0.2], 1),
+        Block::GroupStart("Neutrals"),
+        Block::Color("Mist", b"Gray", &[0.75], 2),
+        Block::Color("Clay", b"LAB ", &[0.5, 20.0, -30.0], 2),
+        Block::GroupEnd,
+    ])
+}

crates/testkit/src/lib.rs

@@ -10,6 +10,7 @@
 //! - [`raster`]: rendering helpers and image comparison with a perceptual tolerance.
 //! - [`geom`]: geometry assertions (approximate equality, curve sampling, Hausdorff distance).
 //! - [`pdf`]: hand-written PDF files (page boxes, colour spaces, encryption) for import tests.
+//! - [`ase`]: hand-written swatch exchange (`.ase`) files for swatch library tests.
 //!
 //! This crate may only be used as a dev-dependency (enforced by `cargo xtask layers`).
 // Test support only (a dev-dependency of every crate that uses it): a failed setup or assertion
@@ -18,6 +19,7 @@
 #![allow(clippy::unwrap_used, clippy::expect_used, clippy::panic)]
 #![forbid(unsafe_code)]
 
+pub mod ase;
 pub mod fixtures;
 pub mod geom;
 pub mod invariants;

crates/ui-egui/src/io.rs

@@ -43,6 +43,8 @@ pub fn open_bytes(app: &mut VectorcraftApp, name: &str, bytes: &[u8], path: Opti
     if swatches || ext == vectorcraft_doc::style_libs::STYLES_EXT {
         let p = match path {
             Some(path) => serde_json::json!({ "path": path }),
+            // `.ase` swatch libraries are binary.
+            None if swatches => serde_json::json!({"name": name, "dataBase64": vectorcraft_format::base64_encode(bytes)}),
             None => serde_json::json!({"name": name, "data": String::from_utf8_lossy(bytes)}),
         };
         let load = if swatches { crate::panels::swatches::load_library } else { crate::panels::graphic_styles::load_library };

crates/ui-egui/src/menus.rs

@@ -346,7 +346,7 @@ pub const UI_COMMANDS: &[(&str, &str, &str, &str)] = &[
         "window.swatchLibrary.other",
         "Other Library…",
         "",
-        "{path?} (default: pick a file) load a .vcswatches or .gpl library, or another document's swatches (engine: swatch.library.load), and open it in the library panel",
+        "{path?} (default: pick a file) load a .vcswatches, .gpl or .ase library, or another document's swatches (engine: swatch.library.load), and open it in the library panel",
     ),
     (
         "ui.saveSwatchLibrary",

crates/ui-egui/src/panels/library_panel.rs

@@ -616,4 +616,16 @@ mod tests {
         }
         assert!(!builtin_library(&open.id) && builtin_library(vectorcraft_engine::cmd::swatchlib::DOCUMENT_SWATCHES));
     }
+
+    #[test]
+    fn swatch_exchange_files_without_a_path_open_in_the_library_panel() {
+        // A file opened on the web has no path; open_bytes passes its bytes as dataBase64.
+        let mut app = app();
+        crate::io::open_bytes(&mut app, "Brand.ase", &vectorcraft_testkit::ase::sample(), None).unwrap();
+        let open = app.ui.library_panel.clone().unwrap();
+        assert_eq!(open.id, "loaded/Brand.ase");
+        let (_, lib) = SwatchLibraries::get(&app, &open.id).unwrap();
+        assert_eq!((lib.len(), lib.groups.len()), (4, 1));
+        assert_eq!(app.session.documents().len(), 1, "not opened as a document");
+    }
 }

docs/control-protocol.md

@@ -154,7 +154,7 @@ Clicking a swatch there runs `swatch.library.add {library, names: [name], apply}
 one with Alt), so one undo step adds and applies it; Shift/Cmd-clicks select swatches and colour groups for
 Add to Swatches.
 `window.swatchLibrary.other {path?}` loads a library file (or another document's swatches) and opens it there;
-opening a `.vcswatches` or `.gpl` file with `app.open` does the same. `ui.saveSwatchLibrary {names?}` opens the
+opening a `.vcswatches`, `.gpl` or `.ase` file with `app.open` does the same. `ui.saveSwatchLibrary {names?}` opens the
 `saveSwatchLibrary` dialog (fields `name`, `format`: `vcswatches`/`gpl`/`css`, `user`: save to the user library
 folder, `selectedOnly` with `names`); `ui.dialog.confirm` runs `swatch.library.save` (to a file it asks for a path).
 

docs/development.md

@@ -239,7 +239,7 @@ web build has no net at all.
 Untrusted input has property tests that must never panic:
 
 - `crates/engine/tests/import_fuzz.rs`: garbage, hostile and mutated SVG and PDF, and swatch
-  (`.vcswatches`, `.gpl`), graphic style (`.vcstyles`) and flattener preset (`.vcflattener`)
+  (`.vcswatches`, `.gpl`, `.ase`), graphic style (`.vcstyles`) and flattener preset (`.vcflattener`)
   libraries, loaded and used, then rendered and exported.
 - `crates/engine/tests/command_sweep.rs`: every command with junk parameters.
 - `crates/format/tests/prop_format.rs`: garbage and mutated `.vectorcraft` files.

docs/mcp.md

@@ -740,7 +740,9 @@ swatch in the library panel does). `swatch.resetDefaults {replace?}` brings back
 as a library (`.vcswatches` keeps colour models, global, spot, gradients and colour groups; `.gpl` is 8-bit RGB;
 CSS writes custom properties); without `path` it returns `{data}`, and `user: true` saves into the user library
 folder of the desktop app (listed as category `user`, User Defined). `swatch.library.load {path? | data? |
-dataBase64?, name?}` loads a `.vcswatches` or `.gpl` file, or another document's swatches, as a library to add from.
+dataBase64?, name?}` loads a `.vcswatches`, `.gpl` or swatch exchange (`.ase`) file, or another document's swatches,
+as a library to add from. From an `.ase` file it reads RGB, CMYK, Lab and Gray colors as global, spot or process
+swatches and keeps their color groups.
 
 ## Graphic style libraries