Fonts: restore missing strokes in hint-reliant Chinese fonts (#2389)

Co-authored-by: xyz9516 <19662679+xyz9516@users.noreply.github.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

ROADMAP.md

@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~15 points (60% → 75% ready for real work) and ~150–230 h away
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (Ctrl+wheel zoom no longer scrolls the document, #1743; previously trivial: progress log: Turkish case mapping in AutoCorrect, #1923; previously trivial: a mouse drag on a table leaves the view where it is, #1738; previously trivial: progress log: Hebrew field results and smart quotes, #1670; previously trivial: Backspace removes a selected table, rows or columns, #1844; previously trivial: progress log: mixed Hebrew/Latin text keeps its order in Word, #1543; previously trivial: progress log: web typing in non-Latin text no longer repeats, #1480; previously trivial: progress log: font family caches bounded and math font lookups follow font changes, #1354; previously trivial: `-->` AutoCorrect replacement, #2223; previously trivial: numbered headings, #1793; previously trivial: Navigation Find exposes Results, #2096; previously trivial: progress log: Columns on selected text, #2024; previously trivial: progress log: legacy outline, shadow, emboss and imprint text effects drawn, #2534; previously trivial: progress log: Indonesian proofing, #498; previously trivial: progress log: DOCX glossary documents (building blocks); previously trivial: progress log: Read Mode keeps the keyboard and shows whole, unobscured columns, #1772); previously trivial: progress log: font list entries of tall-ascent fonts no longer cut off, #2570); previously trivial: progress log: Split Cells and Convert Text to Table dialogs follow the Word check, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout fills the window width, #1876; previously trivial: progress log: Different First Page headers reachable from page 1, #2826; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717); previously trivial: progress log: web preferences kept between visits, #2132; previously trivial: progress log: undrawable private-use list bullets show the level's default bullet, #1683); previously trivial: table style editor formats every part, #714; previously trivial: VML freeforms read and kept on save; previously trivial: progress log: consistent preferred cell widths; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: progress log: grouped `flowChartOr` shapes draw their circle and crossing spokes; previously trivial: progress log: copies keep their formatting in other programs, #1523; previously trivial: progress log: privacy options on save, #1062; previously trivial: progress log: equation pictures in theme colours on Windows, #1002; previously trivial: symbol fonts, #776; previously trivial: the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (hint-reliant CJK outlines; previously trivial: Ctrl+wheel zoom no longer scrolls the document, #1743; previously trivial: progress log: Turkish case mapping in AutoCorrect, #1923; previously trivial: a mouse drag on a table leaves the view where it is, #1738; previously trivial: progress log: Hebrew field results and smart quotes, #1670; previously trivial: Backspace removes a selected table, rows or columns, #1844; previously trivial: progress log: mixed Hebrew/Latin text keeps its order in Word, #1543; previously trivial: progress log: web typing in non-Latin text no longer repeats, #1480; previously trivial: progress log: font family caches bounded and math font lookups follow font changes, #1354; previously trivial: `-->` AutoCorrect replacement, #2223; previously trivial: numbered headings, #1793; previously trivial: Navigation Find exposes Results, #2096; previously trivial: progress log: Columns on selected text, #2024; previously trivial: progress log: legacy outline, shadow, emboss and imprint text effects drawn, #2534; previously trivial: progress log: Indonesian proofing, #498; previously trivial: progress log: DOCX glossary documents (building blocks); previously trivial: progress log: Read Mode keeps the keyboard and shows whole, unobscured columns, #1772); previously trivial: progress log: font list entries of tall-ascent fonts no longer cut off, #2570); previously trivial: progress log: Split Cells and Convert Text to Table dialogs follow the Word check, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout fills the window width, #1876; previously trivial: progress log: Different First Page headers reachable from page 1, #2826; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717); previously trivial: progress log: web preferences kept between visits, #2132; previously trivial: progress log: undrawable private-use list bullets show the level's default bullet, #1683); previously trivial: table style editor formats every part, #714; previously trivial: VML freeforms read and kept on save; previously trivial: progress log: consistent preferred cell widths; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: progress log: grouped `flowChartOr` shapes draw their circle and crossing spokes; previously trivial: progress log: copies keep their formatting in other programs, #1523; previously trivial: progress log: privacy options on save, #1062; previously trivial: progress log: equation pictures in theme colours on Windows, #1002; previously trivial: symbol fonts, #776; previously trivial: the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 > **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-17 · **Change:** trivial (progress log: pasted blockquotes are indented paragraphs, #1270; previously trivial: progress log: print-area strings translated in every catalog; previously trivial: progress log: comments readable in the dark theme, #2045; previously trivial: progress log: ODT sections, #1379; previously trivial: progress log: table deletes, Change Case and Unlink Fields respect Track Changes and locked content controls, #1329; previously trivial: progress log: rounded rectangle corners, #1476; previously trivial: progress log: Save As type list, #1399; previously trivial: progress log: privacy options on save, #1062; previously trivial: progress log: equation pictures in theme colours on Windows, #1002; previously trivial: symbol fonts, #776; previously trivial: the save prompt answers from the keyboard, #861; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw tab ink, #307, and Draw Table and Eraser, #303, landed: catalog 402/434; previously minor: readiness table with hours per audience; full number back to the additive weighted sum, 60%; mainstream and essentials numbers added; alpha gate checked; previously major: full re-measure against Word for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 > **Printing update:** 2026-10-12 · direct desktop printing through craft-print; details below.
 
@@ -137,6 +137,7 @@ Ranked, to beta (detail and remaining milestones in [docs/roadmap.md](docs/roadm
 - 2026-10-15: Find opens Navigation on Results; editing the query restores Results after manual Headings/Pages navigation. Typed and selected-text searches retain document contents (#2096).
 
 | Date | What landed |
+| 2026-10-16 | Hint-reliant CJK fonts execute TrueType contour assembly; Windows DFKai-SB no longer loses strokes. Synthetic local-font regression; no font binaries bundled. |
 | 2026-10-16 | Ctrl/⌘+wheel only zooms: a coast or wheel notch still gliding no longer scrolls the page on top of the zoom, which keeps the page point under the pointer (#1743). |
 | 2026-10-15 | AutoCorrect follows Turkish and Azerbaijani case mapping: `istanbul` → `İstanbul`, `ılık` → `Ilık`, `İNgilizce` → `İngilizce` with no combining dot (#1923) |
 | 2026-10-16 | Releasing a table drag with the mouse (column or row border, move handle, selection areas) leaves the view where it is instead of scrolling back to the caret (#1738) |
@@ -473,6 +474,7 @@ Ranked, to beta (detail and remaining milestones in [docs/roadmap.md](docs/roadm
 | 2026-10-15 | trivial | Progress log: Backspace removes a selected table, rows or columns (#1844) |
 | 2026-10-16 | trivial | Progress log: Hebrew field results and smart quotes (#1670) |
 | 2026-10-16 | trivial | Progress log: Ctrl+wheel zoom no longer scrolls the document (#1743) |
+| 2026-10-16 | trivial | Hint-reliant CJK fonts execute TrueType contour assembly; Windows DFKai-SB no longer loses strokes. Synthetic local-font regression; no font binaries bundled. |
 | 2026-10-14 | trivial | Progress log: row table border exceptions |
 | 2026-10-12 | minor | Czech proofing review: short-word splits rank after deletion, NOSUGGEST excludes suggestions while accepting typed forms, affix comments apply only to headers, ratios keep spaces and repeated-word messages use Czech quotes; synthetic engine end-to-end and latency checks |
 | 2026-10-12 | minor | Czech spelling from the installed Hunspell dictionary, runtime-table suggestions and generic checks; Czech interface writes cs-CZ documents; no Czech hyphenation patterns bundled; estimates unchanged |

crates/fonts/src/fontdb.rs

@@ -7,7 +7,7 @@ use std::sync::{Arc, Mutex, RwLock};
 
 use kurbo::BezPath;
 use skrifa::instance::{Location, LocationRef, Size};
-use skrifa::outline::{DrawSettings, OutlinePen};
+use skrifa::outline::{DrawSettings, Engine, HintingInstance, HintingOptions, OutlinePen, Target};
 use skrifa::raw::FileRef;
 use skrifa::string::StringId;
 use skrifa::{GlyphId, MetadataProvider};
@@ -84,6 +84,8 @@ pub struct FontFace {
     pub instance: Option<harfrust::ShaperInstance>,
     /// Basic Multilingual Plane coverage bitset, built on first use.
     bmp: std::sync::OnceLock<Box<[u64]>>,
+    // Some legacy CJK fonts assemble their contours with TrueType instructions.
+    outline_hinter: std::sync::OnceLock<Option<HintingInstance>>,
 }
 
 /// A cheap `Copy` handle to a face. Faces are never unloaded, so the handle lives for the rest of
@@ -177,7 +179,28 @@ impl FontFace {
         if let Some(f) = self.skrifa()
             && let Some(g) = f.outline_glyphs().get(GlyphId::new(gid))
         {
-            let _ = g.draw(DrawSettings::unhinted(Size::unscaled(), self.location()), &mut pen);
+            let hinter = self.outline_hinter.get_or_init(|| {
+                let outlines = f.outline_glyphs();
+                if !outlines.require_interpreter() {
+                    return None;
+                }
+                // At UPEM pixels, hinted coordinates remain in font units. This
+                // executes contour assembly without tying the cache to view zoom.
+                HintingInstance::new(
+                    &outlines,
+                    Size::new(self.upem as f32),
+                    self.location(),
+                    HintingOptions { engine: Engine::Interpreter, target: Target::Mono },
+                )
+                .map_err(|e| log::warn!("Cannot initialize outline interpreter for {}: {e}", self.family))
+                .ok()
+            });
+            let settings =
+                hinter.as_ref().map_or_else(|| DrawSettings::unhinted(Size::unscaled(), self.location()), |h| DrawSettings::hinted(h, false));
+            if let Err(e) = g.draw(settings, &mut pen) {
+                log::warn!("Cannot draw glyph {gid} in {}: {e}", self.family);
+                return BezPath::new();
+            }
         }
         pen.0
     }
@@ -862,6 +885,7 @@ fn make_face(bytes: FontBytes, index: u32, family: String, style: String, legacy
         bytes,
         index,
         bmp: std::sync::OnceLock::new(),
+        outline_hinter: std::sync::OnceLock::new(),
     })
 }
 
@@ -1761,6 +1785,26 @@ mod tests_sysfonts;
 
 #[cfg(test)]
 mod tests {
+    #[test]
+    #[ignore = "requires a locally licensed kaiu.ttf; set WORDCRAFT_TEST_KAI_FONT"]
+    fn kai_contours_include_complete_character_body() {
+        use kurbo::Shape;
+        let path = std::env::var_os("WORDCRAFT_TEST_KAI_FONT").expect("set WORDCRAFT_TEST_KAI_FONT");
+        let db = super::FontDb::with_font_dirs(vec![]);
+        db.set_system_fallback(false);
+        assert!(db.add_font(std::fs::read(path).unwrap()) > 0);
+        let face = db.face("DFKai-SB", "Regular");
+        assert_eq!(face.family, "DFKai-SB");
+        for ch in ['中', '文', '契', '約'] {
+            let outline = face.glyph_outline(face.glyph_for(ch));
+            let bounds = outline.bounding_box();
+            eprintln!("{ch}: {bounds:?}, upem={}", face.upem);
+            assert!(bounds.width() > face.upem * 0.5, "{ch}: missing horizontal strokes");
+            assert!(bounds.height() > face.upem * 0.5, "{ch}: missing vertical strokes");
+            assert!(std::sync::Arc::ptr_eq(&db.outline(&face, face.glyph_for(ch)), &db.outline(&face, face.glyph_for(ch))));
+        }
+    }
+
     use super::*;
 
     #[test]

docs/gaps.md

@@ -1,6 +1,6 @@
 # Where WordCraft falls short of Word
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (numbered headings, #1793; previously trivial: legacy outline, shadow, emboss and imprint text effects drawn, #2534; previously trivial: #8 narrowed: Indonesian proofing from the installed Hunspell dictionary, #498; previously trivial: glossary/building blocks closed; previously trivial: Split Cells and Convert Text to Table follow the Word check, #2592; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717); previously trivial: #29: a copied equation also goes in the MathML clipboard formats, #1297; previously trivial: VML freeforms read and kept on save; previously trivial: consistent preferred cell widths; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: floating-table overlap ignores empty line-break lines; previously trivial: copies keep their formatting on the clipboard as HTML, #1523; previously trivial: sample-text formulas on Enter, #1067; previously trivial: #29: copied equations as MathML, OMML open as #1297, #816; previously trivial: the Font list no longer keeps every previewed font in memory, #848; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw Table and Eraser landed, #303; previously minor: beta distance restated: ~15 points, ~150–230 h; previously: first version; every known shortfall from the 2026-10-10 re-measure, ranked) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-18 · **Change:** trivial (hint-reliant CJK outlines; previously trivial: numbered headings, #1793; previously trivial: legacy outline, shadow, emboss and imprint text effects drawn, #2534; previously trivial: #8 narrowed: Indonesian proofing from the installed Hunspell dictionary, #498; previously trivial: glossary/building blocks closed; previously trivial: Split Cells and Convert Text to Table follow the Word check, #2592; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717); previously trivial: #29: a copied equation also goes in the MathML clipboard formats, #1297; previously trivial: VML freeforms read and kept on save; previously trivial: consistent preferred cell widths; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: floating-table overlap ignores empty line-break lines; previously trivial: copies keep their formatting on the clipboard as HTML, #1523; previously trivial: sample-text formulas on Enter, #1067; previously trivial: #29: copied equations as MathML, OMML open as #1297, #816; previously trivial: the Font list no longer keeps every previewed font in memory, #848; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handle drag on the page, #217; previously trivial: formatting revisions landed, #41; previously trivial: Draw Table and Eraser landed, #303; previously minor: beta distance restated: ~15 points, ~150–230 h; previously: first version; every known shortfall from the 2026-10-10 re-measure, ranked) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 
 > **Printing update:** 2026-10-12 · direct desktop printing through craft-print; details below.
 
@@ -40,7 +40,7 @@ Document renaming: desktop renaming requires a filesystem that supports hard lin
 | 14 | **`.doc` can't be written; Word 6/95 files refused** | | `crates/docbin` is read-only | Users exchanging files with old Word or legacy systems | 25–40 | [file-format-parity.md](file-format-parity.md) |
 | 15 | **References depth**: no EndNote/Mendeley desktop integration (bibliography sources are saved in DOCX, #790; Zotero landed, #189) | | #790 stores sources in `customXml` and reads them back; `crates/zotero` | Students and researchers | 3–6 | [target-app-parity.md](target-app-parity.md) |
 | 16 | **Right-to-left completeness**: kashida, RTL in HTML/ODT/RTF; six still-open older RTL bug reports to re-verify after #207 (#211, #199, #66, #63, #48, #19; #215 is closed). RTL tables and sections landed (#362); PDF export's Hebrew and Arabic text copies and searches as whole words (#1383) | | [layout-parity.md](layout-parity.md) | Arabic, Persian, Hebrew writers | 7–11 | [layout-parity.md](layout-parity.md) |
-| 17 | **East Asian typography**: Asian Typography options (Phonetic Guide landed, #288; Enclose Characters landed, #297; document grid landed, #391; vertical text landed, #491) | | `para.asianTypography` is live (Paragraph dialog Asian Typography tab, #323) and no East Asian item is left in the catalog's missing list; the remaining depth is not measured | Chinese, Japanese and Korean documents | 11–19 | [layout-parity.md](layout-parity.md) |
+| 17 | **East Asian typography**: hint-reliant DFKai-SB contours repaired (local Windows regression; no readiness estimate change); Asian Typography options (Phonetic Guide landed, #288; Enclose Characters landed, #297; document grid landed, #391; vertical text landed, #491) | | `para.asianTypography` is live (Paragraph dialog Asian Typography tab, #323) and no East Asian item is left in the catalog's missing list; the remaining depth is not measured | Chinese, Japanese and Korean documents | 11–19 | [layout-parity.md](layout-parity.md) |
 | 19 | **RTF and ODT depth**: notes, comments, revisions (RTF and ODT insertions and deletions done), sections (RTF import done, #1378; RTF export and ODT left), RTL. ODT sections landed on import (#1379): page-style changes and columned `text:section`s | | ~2,100 (RTF) and ~1,600 (ODT) lines in `crates/formats`; RTF code pages (#896) and page setup (#902), ODT page setup (#829) landed; open PRs: RTF notes and comments (#1056), ODT notes and comments (#1057), ODT headers and footers (#873) | Users exchanging with LibreOffice or older tools | 18–27 | [file-format-parity.md](file-format-parity.md) |
 | 18 | **Screen-reader access** to the document canvas: exposed, not yet tried with real screen readers | | The canvas describes paragraphs, headings, lists, tables, links, pictures and the caret to AccessKit (#488), tested headlessly; Windows Magnifier follows the caret, onto a new line too (#1119); no NVDA, VoiceOver or Orca run yet | Blind and low-vision users; public-sector procurement | 3–6 | [ui-parity.md](ui-parity.md) |
 | 20 | **Performance on large real-world documents** unmeasured (500+ pages, many pictures) | | Only the 188-page sample benchmark; scrolling a 1,096-page one-table document went from ~600 ms to ~2–5 ms a frame (#811), but opening it still lays out for seconds | Thesis and book authors | 10–20 | [layout-parity.md](layout-parity.md) |
@@ -101,6 +101,7 @@ The Language dialog reads effective character formatting, including document def
 | 2026-10-16 | trivial | #8 narrowed: Indonesian proofing (id-ID spelling from the installed Hunspell dictionary, generic checks, #498) |
 | 2026-10-16 | trivial | Legacy outline, shadow, emboss and imprint text effects drawn (#2534) |
 | 2026-10-15 | trivial | Numbered headings (#1793): heading-linked Multilevel List presets; numbering keeps heading styles. Not a ranked gap; style gallery previews without numbers remain |
+| 2026-10-16 | trivial | Hint-reliant CJK fonts execute TrueType contour assembly; Windows DFKai-SB no longer loses strokes. Synthetic local-font regression; no font binaries bundled. |
 | 2026-10-14 | trivial | Row table border exceptions fixed; other row table exceptions remain unsupported |
 | 2026-10-12 | minor | Czech proofing review: short-word splits rank after deletion, NOSUGGEST excludes suggestions while accepting typed forms, affix comments apply only to headers, ratios keep spaces and repeated-word messages use Czech quotes; synthetic engine end-to-end and latency checks |
 | 2026-10-12 | minor | Czech spelling from the installed Hunspell dictionary, runtime-table suggestions and generic checks; Czech interface writes cs-CZ documents; no Czech hyphenation patterns bundled; estimates unchanged |

docs/layout-parity.md

@@ -1,6 +1,6 @@
 # Layout and pagination parity with Microsoft Word
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-17 · **Change:** trivial (positional tabs go to the margins or indents, #2367; previously trivial: field results with right-to-left text read right to left, #1670; previously trivial: a list bullet no installed font can draw shows the level's default bullet, #1683; previously trivial: a missing Thai font is drawn in one Thai face for the whole run, #1549; previously trivial: the caret after spaces hanging past the margin stays at the margin, #2146; previously trivial: covered black-circle fallback before UI sans; previously trivial: resolved split-cell continuation top insets; previously trivial: Symbol PCL6 alias uses Symbol encoding; previously trivial: exact full font names select their installed face; previously trivial: Arial Unicode MS uses proportional fallbacks; previously trivial: DrawingML outline dashes, including zero-width paths; previously trivial: consistent cell widths override a stale table grid; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: floating-table overlap ignores empty line-break lines; previously trivial: paragraph spacing adds up when the document turns HTML auto spacing off; previously trivial: an inherited footer sizes its percentage tables by its own section; previously trivial: an empty section mark stays on a full page; previously trivial: a fitting row with less room than its minimum height moves on whole; oversized rows still split; previously trivial: text past an exact-height row is cut off; previously trivial: a list number stays with text after a leading page break; previously trivial: a bookmark after a page break takes no line; previously trivial: a page break followed by a page break before or a next-page section starts one page; previously trivial: All Caps and Small Caps draw ß as SS, #1581; previously trivial: justified vertical page alignment, #1320; previously trivial: page numbers restart at 0; previously trivial: a list label moves with its first line when the paragraph is centred or end-aligned (#1159); previously trivial: PAGE fields in a paragraph split across pages show the page they are on, #1352; previously trivial: a dragged floating object anchors in the column it lands in, #884; previously trivial: a paragraph ending on a page with footnotes keeps its space after above the separator, #1116; previously trivial: symbol-font text drawn as Unicode symbols, #776; previously trivial: large-table scrolling measured and fixed, #811; previously trivial: text boxes use their own margins; Resize shape to fit text never cuts text, #743; previously trivial: complex-script shaping and Myanmar line breaking, #604; previously trivial: body page totals, table-cell footnotes and bookmark link pages fixed, #450 #451 #455; previously major: first version; line breaking, pagination and object placement checked against Word's behaviour from the layout source on origin/main) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-17 · **Change:** trivial (hint-reliant CJK outlines; previously trivial: positional tabs go to the margins or indents, #2367; previously trivial: field results with right-to-left text read right to left, #1670; previously trivial: a list bullet no installed font can draw shows the level's default bullet, #1683; previously trivial: a missing Thai font is drawn in one Thai face for the whole run, #1549; previously trivial: the caret after spaces hanging past the margin stays at the margin, #2146; previously trivial: covered black-circle fallback before UI sans; previously trivial: resolved split-cell continuation top insets; previously trivial: Symbol PCL6 alias uses Symbol encoding; previously trivial: exact full font names select their installed face; previously trivial: Arial Unicode MS uses proportional fallbacks; previously trivial: DrawingML outline dashes, including zero-width paths; previously trivial: consistent cell widths override a stale table grid; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: page-break-only list paragraphs hide their labels; previously trivial: floating-table overlap ignores empty line-break lines; previously trivial: paragraph spacing adds up when the document turns HTML auto spacing off; previously trivial: an inherited footer sizes its percentage tables by its own section; previously trivial: an empty section mark stays on a full page; previously trivial: a fitting row with less room than its minimum height moves on whole; oversized rows still split; previously trivial: text past an exact-height row is cut off; previously trivial: a list number stays with text after a leading page break; previously trivial: a bookmark after a page break takes no line; previously trivial: a page break followed by a page break before or a next-page section starts one page; previously trivial: All Caps and Small Caps draw ß as SS, #1581; previously trivial: justified vertical page alignment, #1320; previously trivial: page numbers restart at 0; previously trivial: a list label moves with its first line when the paragraph is centred or end-aligned (#1159); previously trivial: PAGE fields in a paragraph split across pages show the page they are on, #1352; previously trivial: a dragged floating object anchors in the column it lands in, #884; previously trivial: a paragraph ending on a page with footnotes keeps its space after above the separator, #1116; previously trivial: symbol-font text drawn as Unicode symbols, #776; previously trivial: large-table scrolling measured and fixed, #811; previously trivial: text boxes use their own margins; Resize shape to fit text never cuts text, #743; previously trivial: complex-script shaping and Myanmar line breaking, #604; previously trivial: body page totals, table-cell footnotes and bookmark link pages fixed, #450 #451 #455; previously major: first version; line breaking, pagination and object placement checked against Word's behaviour from the layout source on origin/main) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 
 A document only "opens correctly" if its pages break where Word breaks them: the same lines, the
 same page count, footnotes and pictures on the same pages. This checklist covers line breaking,
@@ -19,6 +19,7 @@ font can't match Word's metrics.
 | Feature | State | Evidence / gap | Hours |
 |---|---|---|---|
 | 2026-10-16 | trivial | Split-cell content retains its resolved top margin and border band on continuation pages, matching original Word Mac16.113.2 controls. Synthetic regressions cover margins, borders, line spacing and image frames. |
+| Hint-reliant CJK glyph outlines (DFKai-SB / 標楷體) | 🟡 | Required TrueType interpreter runs at units-per-em size; local Windows glyph-bounds regression and synthetic DOCX page/window comparison pass. Other platforms and hint-reliant families remain unmeasured; no native Word comparison. | — |
 | Line breaking (UAX #14 with Word's exceptions: no break after `/`) | ✅ | `layout::tests::no_line_break_right_after_a_slash` | — |
 | Justification, Word 2013+ space shrinking (compat mode 15) | ✅ | #109 | — |
 | Spaces at the end of a line hang past the right margin instead of wrapping; the caret after them stays at the margin, in the body and in headers and footers | ✅ | `layout::tests::caret_after_hanging_spaces_stays_at_the_margin` (#2146): a letter typed after them wraps to the next line | — |
@@ -192,6 +193,7 @@ Theme-inherited dash styles, line caps, ink and open freeform strokes are not co
 | 2026-10-15 | trivial | A list bullet no installed font can draw (a private-use code) shows the level's default bullet instead of an icon from an unrelated font (#1683) |
 | 2026-10-16 | trivial | Field results (STYLEREF, REF, PAGE text…) with right-to-left text are reordered like ordinary text, so a Hebrew heading in a header reads correctly (#1670) |
 | 2026-10-16 | trivial | Positional tabs (`w:ptab`) are laid out at the margins or indents they name, not at the next tab stop (#2367) |
+| 2026-10-16 | trivial | Hint-reliant CJK fonts execute TrueType contour assembly; Windows DFKai-SB no longer loses strokes. Synthetic local-font regression; no font binaries bundled. |
 | 2026-10-14 | trivial | Row table border exceptions draw without leaking into other rows |
 | 2026-10-14 | trivial | Consistent cell widths override a stale table grid |
 | 2026-10-14 | trivial | Paragraphs inside complex-field instructions take no flow height; empty result paragraphs keep their line. |