Type: Thai, Lao, Khmer and Myanmar lines break between words

These scripts don't separate words with spaces, and lines only broke at spaces, hyphens and CJK characters, so a Thai paragraph in area type ran on to the next space (or was cut wherever it overflowed). Each paragraph's glyphs now carry the word ends ICU4X's line segmenter finds in text of those scripts (its dictionaries on the desktop, its far smaller LSTM models on the web), and a line may break after them as after a space. Other text keeps its own breaks, and clusters (a consonant with its vowel and tone marks) still never split. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Merge pull request #1187 from storytold/docs/type-parity-status
2026-10-11 19:31:37 +07:00 · 2026-10-11 19:30:25 +07:00
7 changed files with 138 additions and 4 deletions
@@ -1860,11 +1860,32 @@ checksum = "d56e28588da92eee5c3201a6eff33fabdd49b62269c8938d4ff050ce4d900deb"
 dependencies = [
 "displaydoc",
 "litemap",
+ "serde",
 "tinystr",
 "writeable",
 "zerovec",
 ]

+[[package]]
+name = "icu_locale_fallback"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "251af8e57c9400e3eb58242fe5b8b1152b2a64fdf4cf632f923c38ccee6f2fa9"
+dependencies = [
+ "icu_locale_core",
+ "icu_locale_fallback_data",
+ "icu_provider",
+ "potential_utf",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locale_fallback_data"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "decf2a22ec8fa68f1a0c1129a3f8583f8f8bc24e8b9ccbe98ead99f62a4dc3a8"
+
 [[package]]
 name = "icu_normalizer"
 version = "2.3.0"
@@ -1914,6 +1935,8 @@ checksum = "d27bbb9d3abbefac45d55f647c9de1d44aafcd1186eb91879afef17c396c3e73"
 dependencies = [
 "displaydoc",
 "icu_locale_core",
+ "serde",
+ "stable_deref_trait",
 "writeable",
 "yoke",
 "zerofrom",
@@ -1921,6 +1944,29 @@ dependencies = [
 "zerovec",
 ]

+[[package]]
+name = "icu_segmenter"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82d07aafccd67af15d02512a6adf5896fbc5ed00f2e99b471d2efa14016db3db"
+dependencies = [
+ "core_maths",
+ "icu_collections",
+ "icu_locale_fallback",
+ "icu_provider",
+ "icu_segmenter_data",
+ "potential_utf",
+ "smallvec",
+ "utf8_iter",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_segmenter_data"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae293c039020f9ec10710af98d29ce6aa2051486638b49c9a6409f3b4a9e98ad"
+
 [[package]]
 name = "idna"
 version = "1.1.0"
@@ -3152,6 +3198,8 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d83eb9bc6d8e5cf568e7a1101d60ee05e81ed50ea106026f3d18deeb046d7661"
 dependencies = [
+ "serde_core",
+ "writeable",
 "zerovec",
 ]

@@ -4133,6 +4181,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1e27c91459209c2986af3dcf603a5a74a4368754ce37414f59acc971167f643"
 dependencies = [
 "displaydoc",
+ "serde_core",
 "zerovec",
 ]

@@ -4806,6 +4855,7 @@ name = "vectorcraft-text"
 version = "0.9.0"
 dependencies = [
 "harfrust 0.13.3",
+ "icu_segmenter",
 "kurbo 0.13.1",
 "log",
 "skrifa 0.47.0",
@@ -6184,6 +6234,7 @@ dependencies = [
 "displaydoc",
 "yoke",
 "zerofrom",
+ "zerovec",
 ]

 [[package]]
@@ -6192,6 +6243,7 @@ version = "0.11.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bb0464e17806c1d976d5cba29399c7f08e516e279e2ba493f63123b5fca67dd8"
 dependencies = [
+ "serde",
 "yoke",
 "zerofrom",
 "zerovec-derive",
@@ -127,7 +127,7 @@ Ranked; detail in [docs/roadmap.md](docs/roadmap.md) and [docs/gaps.md](docs/gap

 | Date | What landed |
 |---|---|
-| 2026-10-11 | Effect › Brush Strokes: Accented Edges, Angled Strokes, Crosshatch, Dark Strokes, Ink Outlines, Spatter, Sprayed Strokes, Sumi-e (G2). Command parameters from agents and files checked before anything changes (paint, place, cuts, dashes, crop, asset ids, anchors, paths, distort; #984–#999); command dialogs keep whole numbers whole, so Create Object Mosaic takes the tiles typed (#1000); stepper arrows take Shift (×10) and Ctrl/Cmd (÷10) like the arrow keys (#991). Exports and Rasterize supersample Art Optimized edges, so shapes meeting edge to edge leave no seam (#983). Character and paragraph styles take leading, kerning, mojikumi and the other attributes left out at their defaults (#1001). Drawing, typing and pasting with no layer shown and unlocked is refused instead of adding art to a hidden or locked layer (#1002). MCP `add_text` gives type on or in a path the colour asked for (#1003). MCP `screenshot` of a connected app renders the artboard asked for (#1004). `vectorcraft-cli run` ends quietly when its reader closes early (#1005). Select › All on Active Artboard selects on the artboard made active, not always the first (#1006). Reverse Gradient keeps off-centre midpoints, mirrored (#1007). A polar grid with no radial dividers draws none (#1008). Use Precise Cursors also covers the Pen's join pointer (#1009). SVGs with one absolute and one unitless root side import at their size, unstretched (#1010). DXF US survey inches, yards and miles open at their size and name (#1011). A file placed into a document with no other links follows its first change even while the app sits idle (#1031). PDF import keeps the style a font name says when the file doesn't embed the font (#1023). Shift selects ruler guides and art together, and Delete removes both (#1022). Open filled paths are hit by their fill on every side, the rotate cursor bows around the corner it is at, the flip icons match their flips, the Color Picker previews on the selection, and Properties › Transform reaches Scale Corners and Scale Strokes & Effects (#1036). Offset Path and the other booleans finish on outlines where the sweep used to loop until memory ran out (linesweeper 0.5, #1028). Floating panel groups stack into sets that move together, collapse to their tabs and dock as extra dock columns that scroll (#1020). Ruler guides live on layers: listed in the Layers panel, shown, hidden, locked, duplicated, merged and deleted with their layer, and moved between layers (#1021). A `.ai` whose editing data uses global process colours (`Xk`/`XK`) or pattern fills keeps its sublayers: the colours come in as global swatches at their tint, the patterns as pattern swatches (#1025). A `.ai` in PostScript form opens through its layers, read from the program itself, also when it names the prolog defining its operators without including it, as Rhino and other CAD apps write it (#1027). A fill or stroke chosen while the Type tool has characters selected colours just those characters (#1063). Scaled type shows its scaled font size, leading, baseline shift and horizontal scale in the Character panel, and a size typed there is the size you get (#1034). Character panel menu › Proportional Metrics sets Japanese and Chinese full-width glyphs on the font's proportional widths in horizontal type (#966). Align, Distribute, Move, Arrange, Lock, Hide, Ungroup and other Object commands that would change nothing no longer record an undo step or mark the document changed (#1060). Spot colours defined in Lab open with their Lab values from `.ai` and PDF files, instead of as wrong RGB colours or their CMYK equivalents (#1032). Build scripts leave a generated source they wouldn't change untouched, so the next build doesn't compile most of the workspace again where file times lose their sub-second part (#1051). A fill colour recolours the gradient mesh point last clicked with the Mesh tool or Direct Selection, and a Mesh tool click on a mesh's point selects that mesh (#1052). The All Tools drawer stays two tools wide instead of filling a wide window (#1054). Text Wrap's Make, Release and Options refuse a list of object ids with a malformed or unknown id instead of skipping it (#1055). A freeform gradient line with a malformed point index is refused instead of being shortened to the indices that are valid (#1056). The Corners dialog (`ui.corners`) refuses a malformed object id or a listed anchor that isn't a corner instead of editing the selection or the other corners (#1057). New View refuses a centre that isn't exactly [x, y] and a rotation that isn't a number, instead of trimming the one and saving the other as 0° (#1058). The command sweeps try junk scale, spacing and artboard values too, which they had skipped since before those bugs were fixed (#1059). EPS and PostScript `arc` and `arcn` with huge angles no longer hang the import, and an arc whose angles are whole turns apart is empty, as the PostScript reference defines it (#1062). Align and DisLine truncated
+| 2026-10-11 | Effect › Brush Strokes: Accented Edges, Angled Strokes, Crosshatch, Dark Strokes, Ink Outlines, Spatter, Sprayed Strokes, Sumi-e (G2). Command parameters from agents and files checked before anything changes (paint, place, cuts, dashes, crop, asset ids, anchors, paths, distort; #984–#999); command dialogs keep whole numbers whole, so Create Object Mosaic takes the tiles typed (#1000); stepper arrows take Shift (×10) and Ctrl/Cmd (÷10) like the arrow keys (#991). Exports and Rasterize supersample Art Optimized edges, so shapes meeting edge to edge leave no seam (#983). Character and paragraph styles take leading, kerning, mojikumi and the other attributes left out at their defaults (#1001). Drawing, typing and pasting with no layer shown and unlocked is refused instead of adding art to a hidden or locked layer (#1002). MCP `add_text` gives type on or in a path the colour asked for (#1003). MCP `screenshot` of a connected app renders the artboard asked for (#1004). `vectorcraft-cli run` ends quietly when its reader closes early (#1005). Select › All on Active Artboard selects on the artboard made active, not always the first (#1006). Reverse Gradient keeps off-centre midpoints, mirrored (#1007). A polar grid with no radial dividers draws none (#1008). Use Precise Cursors also covers the Pen's join pointer (#1009). SVGs with one absolute and one unitless root side import at their size, unstretched (#1010). DXF US survey inches, yards and miles open at their size and name (#1011). A file placed into a document with no other links follows its first change even while the app sits idle (#1031). PDF import keeps the style a font name says when the file doesn't embed the font (#1023). Shift selects ruler guides and art together, and Delete removes both (#1022). Open filled paths are hit by their fill on every side, the rotate cursor bows around the corner it is at, the flip icons match their flips, the Color Picker previews on the selection, and Properties › Transform reaches Scale Corners and Scale Strokes & Effects (#1036). Offset Path and the other booleans finish on outlines where the sweep used to loop until memory ran out (linesweeper 0.5, #1028). Floating panel groups stack into sets that move together, collapse to their tabs and dock as extra dock columns that scroll (#1020). Ruler guides live on layers: listed in the Layers panel, shown, hidden, locked, duplicated, merged and deleted with their layer, and moved between layers (#1021). A `.ai` whose editing data uses global process colours (`Xk`/`XK`) or pattern fills keeps its sublayers: the colours come in as global swatches at their tint, the patterns as pattern swatches (#1025). A `.ai` in PostScript form opens through its layers, read from the program itself, also when it names the prolog defining its operators without including it, as Rhino and other CAD apps write it (#1027). A fill or stroke chosen while the Type tool has characters selected colours just those characters (#1063). Scaled type shows its scaled font size, leading, baseline shift and horizontal scale in the Character panel, and a size typed there is the size you get (#1034). Character panel menu › Proportional Metrics sets Japanese and Chinese full-width glyphs on the font's proportional widths in horizontal type (#966). Align, Distribute, Move, Arrange, Lock, Hide, Ungroup and other Object commands that would change nothing no longer record an undo step or mark the document changed (#1060). Spot colours defined in Lab open with their Lab values from `.ai` and PDF files, instead of as wrong RGB colours or their CMYK equivalents (#1032). Build scripts leave a generated source they wouldn't change untouched, so the next build doesn't compile most of the workspace again where file times lose their sub-second part (#1051). A fill colour recolours the gradient mesh point last clicked with the Mesh tool or Direct Selection, and a Mesh tool click on a mesh's point selects that mesh (#1052). The All Tools drawer stays two tools wide instead of filling a wide window (#1054). Text Wrap's Make, Release and Options refuse a list of object ids with a malformed or unknown id instead of skipping it (#1055). A freeform gradient line with a malformed point index is refused instead of being shortened to the indices that are valid (#1056). The Corners dialog (`ui.corners`) refuses a malformed object id or a listed anchor that isn't a corner instead of editing the selection or the other corners (#1057). New View refuses a centre that isn't exactly [x, y] and a rotation that isn't a number, instead of trimming the one and saving the other as 0° (#1058). The command sweeps try junk scale, spacing and artboard values too, which they had skipped since before those bugs were fixed (#1059). EPS and PostScript `arc` and `arcn` with huge angles no longer hang the import, and an arc whose angles are whole turns apart is empty, as the PostScript reference defines it (#1062). Align and DisLine truncated
 | 2026-10-10 | Initial live Revolve (Effect › 3D and Materials, #846, #605), in its own `three-d` crate. Progress docs re-measured and restructured to the craftrules standard (this page, `docs/target-app-parity.md`, `gaps.md`, `ui-parity.md`, the format, hardware, localization, effects and type checklists). Same day: v0.8.0; Effect › Distort, Pixelate and Texture filters (13); German interface; Variables (data merge); Graph Type value axes and tick marks; restart when the first frame never reaches the screen (#964) |
 | 2026-10-09 | Radial Blur, Smart Blur, Unsharp Mask (gap 2 begins); 340 commits, the busiest day |
 | 2026-10-08 | v0.5.0–v0.7.0; community contributions: Pen and shape-tool modifiers, Layers, Artboards, Japanese composition, Hebrew/Arabic type, interface languages, saved selections |
@@ -21,6 +21,10 @@ subsetter = { version = "0.2", default-features = false, features = ["variable-f
 unicode-bidi = "0.3.18"
 unicode-general-category = "1"
 unicode-script = "0.5"
+# Word boundaries in scripts written without spaces between words (Thai, Lao, Khmer, Myanmar), where
+# lines may break: ICU4X's line segmenter (Unicode-3.0, as icu_properties already in the build),
+# with its dictionaries on the desktop and its far smaller LSTM models on the web.
+icu_segmenter = "2.3"
 # Grapheme clusters (a Thai consonant with its vowel and tone marks, an accented letter, an emoji
 # sequence) for caret movement; MIT OR Apache-2.0, already in the build.
 unicode-segmentation = "1.13"
@@ -13,7 +13,8 @@ use crate::composer::{Breakpoint, Params, compose};
 use crate::fontdb::FontDb;
 use crate::hyphen::hyphen_points;
 use crate::shape::{
-    Punct, SGlyph, Tcy, cap_x_heights, hyphen_glyph, is_cjk, no_line_end, no_line_start, punct, shape_range, soft_line_start, style_metrics,
+    Punct, SGlyph, Tcy, cap_x_heights, hyphen_glyph, is_cjk, mark_word_ends, no_line_end, no_line_start, punct, shape_range, soft_line_start,
+    style_metrics,
 };
 use crate::{Composer, FirstBaseline, InlineGlyph, LayoutOptions, LineInfo, OtFeatures, PositionedGlyph, TextLayout, VerticalAlign};

@@ -1184,6 +1185,7 @@ mod wrapping_tests {
                ch,
                tcy: None,
                inline: None,
+                word_end: false,
                lead: 0.0,
                proportional: false,
                vpal: None,
@@ -1442,6 +1444,8 @@ fn flow(cx: &mut Ctx<'_>, paras: &[Range<usize>], t: &TextObject, regions: Optio
        let bidi = para_bidi(text.get(pr.clone()).unwrap_or_default(), para.direction);
        let rtl = is_rtl(bidi.as_ref());
        let mut sg = cx.shape_para(pr.clone(), bidi.as_ref());
+        // Thai, Lao, Khmer and Myanmar break lines between words, not at spaces.
+        mark_word_ends(text.get(pr.clone()).unwrap_or_default(), pr.start, &mut sg);
        // Japanese composition: consecutive punctuation shares one half-em space.
        let compressed = if para.mojikumi == Mojikumi::LineEndHalf { compress_punctuation(&mut sg) } else { vec![] };
        // …and a quarter em between Japanese and Latin text.
@@ -59,6 +59,9 @@ pub(crate) struct SGlyph {
    pub level: Level,
    /// An inline graphic ([`vectorcraft_doc::TextRun::inline`]) standing in for a glyph.
    pub inline: Option<InlineBox>,
+    /// A word of a script written without spaces (Thai, Lao, Khmer, Myanmar) ends after the
+    /// glyph's cluster, so a line may break there ([`mark_word_ends`]).
+    pub word_end: bool,
 }

 /// How `vpal` moves an upright glyph in vertical type and changes its length down the column, in
@@ -102,7 +105,7 @@ impl SGlyph {
    }
    /// A line may break after this glyph.
    pub fn break_after(&self) -> bool {
-        self.is_space() || matches!(self.ch, '-' | '\u{2010}' | '\u{2013}' | '\u{2014}' | '/' | SOFT_HYPHEN) || is_cjk(self.ch)
+        self.is_space() || self.word_end || matches!(self.ch, '-' | '\u{2010}' | '\u{2013}' | '\u{2014}' | '/' | SOFT_HYPHEN) || is_cjk(self.ch)
    }
    /// A soft (discretionary) hyphen: invisible unless a line breaks after it.
    pub fn is_soft_hyphen(&self) -> bool {
@@ -232,6 +235,34 @@ pub(crate) fn punct(c: char) -> Option<Punct> {
    }
 }

+/// Is `c` of a script written without spaces between words, whose line breaks need a model of its
+/// words: Thai, Lao, Khmer or Myanmar (UAX #14's class SA)?
+pub(crate) fn is_unspaced_script(c: char) -> bool {
+    matches!(c.script(), Script::Thai | Script::Lao | Script::Khmer | Script::Myanmar)
+}
+
+/// Mark the glyphs of `sg` (shaped from `text`, which starts at byte `start` of the text the
+/// glyphs index) after which a word of Thai, Lao, Khmer or Myanmar ends: where a line may break in
+/// text without spaces between words. The words come from ICU4X's line segmenter (its LSTM models
+/// for those scripts); other text keeps its own breaks.
+pub(crate) fn mark_word_ends(text: &str, start: usize, sg: &mut [SGlyph]) {
+    // The dictionaries on the desktop (the most accurate, a few megabytes); the far smaller LSTM
+    // models on the web.
+    #[cfg(not(target_arch = "wasm32"))]
+    static SEGMENTER: std::sync::LazyLock<icu_segmenter::LineSegmenterBorrowed<'static>> =
+        std::sync::LazyLock::new(|| icu_segmenter::LineSegmenter::new_dictionary(Default::default()));
+    #[cfg(target_arch = "wasm32")]
+    static SEGMENTER: std::sync::LazyLock<icu_segmenter::LineSegmenterBorrowed<'static>> =
+        std::sync::LazyLock::new(|| icu_segmenter::LineSegmenter::new_auto(Default::default()));
+    if !text.chars().any(is_unspaced_script) {
+        return;
+    }
+    let breaks: Vec<usize> = SEGMENTER.segment_str(text).map(|b| b + start).collect();
+    for g in sg.iter_mut().filter(|g| g.inline.is_none() && is_unspaced_script(g.ch)) {
+        g.word_end = breaks.binary_search(&(g.byte + g.len)).is_ok();
+    }
+}
+
 pub(crate) fn is_cjk(c: char) -> bool {
    matches!(c as u32, 0x2E80..=0x9FFF | 0xAC00..=0xD7AF | 0xF900..=0xFAFF | 0xFF00..=0xFFEF | 0x20000..=0x2FFFF)
 }
@@ -446,6 +477,7 @@ fn inline_glyph(face: &Arc<FontFace>, st: &CharStyle, art: &InlineArt, run: usiz
        // RTL text like any other glyph once the line is reordered.
        level,
        inline: Some(InlineBox { art: drawn, xf }),
+        word_end: false,
    }
 }

@@ -614,6 +646,7 @@ fn shape_segment(text: &str, context: &Range<usize>, seg: &Segment, feats: &OtFe
            vpal: vpal.get(gi).copied().flatten(),
            level: *level,
            inline: None,
+            word_end: false,
        });
    }
 }
@@ -728,3 +728,42 @@ fn burasagari_leaves_latin_commas_and_full_stops_inside_the_line() {
        }
    }
 }
+
+/// Thai is written without spaces between words: area type breaks its lines between words (as a
+/// model of Thai words finds them), never inside a word nor before a vowel or tone mark.
+#[test]
+fn thai_lines_break_between_words() {
+    let text = "สวัสดีครับ ภาษาไทยง่ายนิดเดียว";
+    // Narrower than the shortest words: each line holds one word.
+    let l = layout(db(), &area(text, style(12.0), Rect::new(0.0, 0.0, 70.0, 2000.0), Justify::Left));
+    let lines: Vec<&str> = l.lines.iter().map(|ln| &text[ln.start..ln.end]).collect();
+    assert!(lines.len() >= 3, "{lines:?}");
+    // Its words: สวัสดี ครับ, ภาษา ไทย ง่าย นิดเดียว ("hello", "the Thai language is very easy").
+    let words = ["สวัสดี", "ครับ ", "ภาษา", "ไทย", "ง่าย", "นิดเดียว"];
+    let ends: Vec<usize> = words
+        .iter()
+        .scan(0, |at, w| {
+            *at += w.len();
+            Some(*at)
+        })
+        .collect();
+    assert_eq!(ends.last(), Some(&text.len()));
+    for ln in &l.lines {
+        assert!(ends.contains(&ln.end), "a line ends inside a word: {lines:?}");
+    }
+    for w in l.lines.windows(2) {
+        assert_eq!(w[0].end, w[1].start, "lines tile the text");
+    }
+    let mark = |c: char| matches!(c, '\u{0E31}' | '\u{0E34}'..='\u{0E3A}' | '\u{0E47}'..='\u{0E4E}');
+    assert!(lines.iter().all(|s| s.chars().next().is_some_and(|c| !mark(c))), "a line starts with a mark: {lines:?}");
+}
+
+/// The desktop's dictionaries keep loanwords whole that a smaller model splits: โปรแกรม
+/// ("program").
+#[test]
+fn thai_loanwords_stay_whole() {
+    let text = "ยินดีต้อนรับสู่โปรแกรมวาดภาพเวกเตอร์";
+    let l = layout(db(), &area(text, style(12.0), Rect::new(0.0, 0.0, 70.0, 2000.0), Justify::Left));
+    let lines: Vec<&str> = l.lines.iter().map(|ln| &text[ln.start..ln.end]).collect();
+    assert!(lines.contains(&"โปรแกรม"), "{lines:?}");
+}
@@ -1,6 +1,6 @@
 # Type parity

-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-11 · **Change:** minor (the caret steps over whole clusters such as Thai consonants with their marks; Thai typed in a font without Thai falls back to a font made for Thai; earlier: Proportional Metrics in vertical type, `vpal`, #966) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-11 · **Change:** minor (Thai, Lao, Khmer and Myanmar lines break between words; the caret steps over whole clusters such as Thai consonants with their marks; Thai typed in a font without Thai falls back to a font made for Thai; earlier: Proportional Metrics in vertical type, `vpal`, #966) · **Target:** Adobe Illustrator 2026 (30.x)

 Type is Illustrator's largest single area by use (weight 13 of 105 across "Type core" and "Type advanced" in
 [target-app-parity.md](target-app-parity.md)). This checklist lists the features one by one. Status is from the
@@ -41,6 +41,7 @@ against Illustrator's public documentation; **estimated** unless noted.
 | Touch Type tool | missing | listed in the toolbar, not implemented |
 | Retype (identify fonts in outlines/images) | missing | Illustrator's uses a cloud model |
 | Snap to Glyph | missing | menu stub |
+| Thai, Lao, Khmer, Myanmar: shaping (marks, reordering), lines broken between words | done | words found by ICU4X's line segmenter: dictionaries on the desktop, LSTM models on the web |
 | Middle Eastern: bidirectional layout, Paragraph Direction | done | |
 | Middle Eastern: Character Direction, digit types, kashidas, Middle Eastern composers, split caret | missing | |
 | CJK: input methods (marked text, candidate window) | done | |
@@ -53,6 +54,7 @@ against Illustrator's public documentation; **estimated** unless noted.

 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-11 | minor | Thai, Lao, Khmer and Myanmar text breaks its lines between words (ICU4X line segmenter) instead of only at spaces; score unchanged (estimated) |
 | 2026-10-11 | minor | The Type tool's arrows and Delete move by grapheme cluster, never between a Thai consonant and its vowel or tone marks; score unchanged (estimated) |
 | 2026-10-11 | minor | Thai (Lao, Khmer, Myanmar) missing from the font in use falls back to an installed font made for the script instead of whichever face covering it loaded first; score unchanged (estimated) |
 | 2026-10-11 | minor | Proportional Metrics done: `palt` in horizontal type, `vpal` in vertical type (#966, #1082); ruby and manual tate-chu-yoko still missing |