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The screenshots in #486 show exactly the characters BIZ UDPGothic (the Japanese interface face) lacks: 选项规语简户另为导 … in Simplified and 啟內另 … in Traditional, with "?" in the Inter-based medium/semibold families (no U+25FB replacement glyph) and boxes in the proportional one. That is the font chain of v0.4.0 and earlier, which embedded no Chinese face and had no installed-font fallback; v0.5.0 (#248) embeds Noto Sans CJK SC. This hardens the chain so it can't silently regress: - The installed CJK font is chosen by coverage: it is added after the embedded faces whenever they leave a CJK character of the CJK catalogs or the language names without a glyph (not only when no "Hans" face exists), and the face picked is the one mapping the most of those characters. - macOS: look inside com_apple_MobileAsset_Font<N>/<hash>.asset/AssetData (bounded, one level) where macOS 10.15+ keeps PingFang.ttc, also under /System/Library/Assets; PingFangUI.ttc as a last resort. - Test: every CJK character of the zh-hans, zh-hant and ja catalogs and the language names has a glyph in the embedded chain in all three interface weights (skips without craft-fonts; fails with a Japanese-only craft-fonts, listing exactly the characters from the screenshots). Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>
86 lines
6.8 KiB
Markdown
86 lines
6.8 KiB
Markdown
# Localization parity with Microsoft Word
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> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-11 · **Change:** minor (CJK interface font coverage, #486; previously minor: Turkish interface added; previously major: first version; catalogs measured from `crates/ui-egui/src/i18n`, Word's languages from its bundle listing) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
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Interface languages, script support and proofing per language. How translation works (catalog
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format, adding a language, clean-room rule): `crates/ui-egui/src/i18n/mod.rs`.
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**Dimension: ~25% (estimated), 80–130 h to full for the twelve key languages** plus ~50 h for the
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other ~18 languages Word ships, plus native-speaker review (human).
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## What Word ships (measured by listing the bundle)
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- **30 interface languages** (31 `.lproj` folders incl. Base): ar, cs, da, de, el, en, en-GB, es,
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es-MX, fi, fr, fr-CA, he, hu, id, it, ja, ko, nl, no, pl, pt (BR), pt-PT, ru, sk, sv, th, tr,
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zh-CN, zh-TW. Arabic and Hebrew get a mirrored interface. No Hindi or Vietnamese interface on Mac.
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- **120 proofing tools** (`SharedSupport/Proofing Tools`): spellers for ~50 languages, grammar
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checkers for ~20, hyphenators for ~16, thesauri for ~20.
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## What WordCraft ships (measured)
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- **12 interface languages**: English plus `zh-hans`, `zh-hant`, `ja`, `uk`, `es`, `pt-br`,
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Serbian `sr`/`sr-latn` (#250), Estonian `et`, Turkish `tr` and Russian `ru`. Catalogs have 1,305–1,450 entries
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each. A test (`every_tab_and_command_is_translated`) enforces that every ribbon tab, command
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label and ribbon location is translated in every language.
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- Of the 675 English strings a scan extracts from `tl!(…)` calls and command labels/locations, each
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catalog covers **661 (98%)**. Some newer dialog and pane strings (Equation tab tooltips, Zotero,
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Read Aloud, Backstage greetings) aren't wrapped in `tl!` yet, so they show in English in every
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language: the true share of visible strings is **~93–95%** (estimated).
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- Pending PRs: German (#203), Norwegian Bokmål (#208) and Nynorsk (#210), Hebrew with RTL (#20).
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- **Proofing: English only** (one dictionary, rule-based grammar, English hyphenation patterns).
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- Document scripts: shaping via HarfRust (HarfBuzz port) for every script; bidi (UAX #9) and Arabic
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shaping tested (#207); IME on all desktop platforms (winit fixes pending, #155–#164).
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## The twelve key languages
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Status: `full` = every user-visible string translated and the script renders and edits correctly;
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`partial`; `menus only`; `none`. Hours are to `full`, Opus 5.5 agent wall-clock, excluding the
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shared items below.
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| Language | Code | UI strings translated | Dialogs / tooltips / help | Script support | Native review | Status | Hours to full |
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|---|---|---|---|---|---|---|---|
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| English | en | source (100%) | ✅ | Latin ✅ | yes | **full** | 0 |
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| Simplified Chinese (Mandarin) | zh-hans | 929 entries; 98% of extracted, ~95% of visible | most; newer panes English | CJK ✅, IME ✅; Windows UI font fixed (#248); interface font chain covers every catalog character, installed CJK font after the embedded ones when it doesn't, PingFang found on macOS 12 (#486); no vertical text | no | partial | 3–5 |
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| Spanish | es | ~930; 98% / ~95% | most | Latin ✅ | no | partial | 1–2 |
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| Hindi | hi | 0 | ❌ | Devanagari shaping via HarfRust, untested; no hyphenation | no | none | 4–6 |
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| Arabic | ar | 0 | ❌ | shaping, joining, lam-alef, bidi ✅ (#207); no kashida; **no mirrored UI** | no | none | 6–8 |
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| French | fr | 0 | ❌ | Latin ✅ | no | none | 3–4 |
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| Portuguese | pt-br (pt-PT none) | ~930; 98% / ~95% (pt-BR) | most | Latin ✅ | no | partial | 2–4 (pt-BR finish + pt-PT) |
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| Indonesian | id | 0 | ❌ | Latin ✅ | no | none | 3–4 |
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| Japanese | ja | ~930; 98% / ~95% | most | CJK ✅, IME ✅; no vertical text, ruby or document grid | no | partial | 3–5 |
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| German | de | 0 (PR #203 open) | ❌ | Latin ✅ | no | none | 1–2 |
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| Korean | ko | 0 | ❌ | Hangul ✅; macOS Korean IME fixes pending (#163, #164) | no | none | 3–5 |
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| Vietnamese | vi | 0 | ❌ | Latin with stacked diacritics, untested | no | none | 3–4 |
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Other shipped languages: **7** — Traditional Chinese (`zh-hant`), Ukrainian (`uk`), Serbian
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Cyrillic and Latin (`sr`, `sr-latn`, #250), Estonian (`et`), Turkish (`tr`) and Russian (`ru`), all partial.
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Estonian uses the existing fonts, follows `et-EE` system locales, and is available in Options or
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through `ui.language` with `{"value":"et"}`. Its 1,307 entries cover the existing interface catalog.
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Estonian spelling, grammar, dates and document templates are not added by the interface catalog.
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Turkish works the same way (`tr-TR` and `tr-CY` system locales, `{"value":"tr"}`) with all 1,307
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entries. Command search folds the Turkish dotted and dotless I (`italik` finds İtalik, `YAZI TİPİ`
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finds Yazı Tipi) while English labels and ASCII command ids keep their usual matching. Turkish
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proofing is not included; terminology and checks: [`localization-tr.md`](localization-tr.md).
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## Shared work (not in the per-language hours)
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| Item | Hours | Notes |
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| Wrap the remaining English literals in `tl!` and translate them in every catalog | 4–6 | Makes the six partial languages full except script items |
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| Mirrored (right-to-left) interface for Arabic and Hebrew | 15–25 | Ribbon, panes, dialogs, rulers |
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| Vertical text, ruby, document grid (Chinese, Japanese, Korean) | counted in [layout-parity.md](layout-parity.md) | |
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| Proofing dictionaries, grammar and hyphenation for the 11 non-English key languages | 25–45 | Open dictionaries only (licence check per dictionary); issues #25, #40, #100 |
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| Native-speaker review of every catalog | human | None reviewed yet |
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## Revision history
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| Date | Change | Summary |
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| 2026-10-11 | minor | Chinese/Japanese interface fonts: a test checks every catalog character has a glyph; an installed CJK font follows the embedded faces whenever they miss one; macOS font asset folders searched for PingFang (#486) |
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| 2026-10-10 | minor | Russian interface (#300; 1,524 entries, built-in style names shown translated; covers everything the interface audit finds) |
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| 2026-10-11 | minor | Turkish interface catalog (1,307 entries), locale selection, saved preference, Turkish casing in command search and font coverage checks; catalog sizes re-counted |
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| 2026-10-11 | trivial | English spelling (#520): our supplement `assets/spelling/en-extra.txt` adds ~220 common modern words the Moby list lacks ("desktop", "download", "email"…) |
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| 2026-10-10 | minor | Estonian interface catalog, locale selection, saved preference and font coverage checks |
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| 2026-10-10 | minor | Serbian (Cyrillic and Latin) interface merged (#250) |
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| 2026-10-10 | major | First version: twelve-language table, catalog coverage measured, Word's 30 UI languages and 120 proofing tools listed |
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