60 lines
4.3 KiB
Markdown
60 lines
4.3 KiB
Markdown
# Localization parity with PowerPoint
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> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** major (created; string count measured from source, PowerPoint's localizations read from its bundle) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
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DeckCraft's interface is English only today: strings are literals in the UI and engine code, with
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no catalog and no language switch. Requests: #15 (follow the system language), #30 and PR #34
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(Ukrainian, open). Dimension score: **~8% ready** (estimated: English complete, slide-text script
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support partly there), **55–90 h** to parity plus native-speaker review.
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## How the numbers are measured
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- **UI strings:** ~1,050 user-visible string literals (measured 2026-10-10: distinct
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capitalized literals in `crates/ui-egui/src`, `crates/engine/src/cmd` and `crates/model/src`,
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including the 226 command labels). A catalog will refine the count; until then percentages are
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against this figure.
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- **Script support** is about slide text (what users type and import), separately from the UI:
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bidi and shaping live in `crates/text` (UAX #9, HarfRust, UAX #14 line breaking).
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- **PowerPoint's languages:** `Contents/Resources/*.lproj` in PowerPoint 16.113.4: ar, cs, da, de,
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el, en, en_GB, es, es_MX, fi, fr, fr_CA, he, hu, id, it, ja, ko, nl, no, pl, pt (Brazil), pt_PT,
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ru, sk, sv, th, tr, zh_CN, zh_TW (26 languages). PowerPoint for **Mac** has no Hindi or Vietnamese
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UI; PowerPoint for Windows has both.
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## The twelve key languages
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| Language | Code | UI strings translated | Dialogs / tooltips / help | Script support (slide text) | Native review | Status | PowerPoint for Mac UI | Hours to full |
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|---|---|---|---|---|---|---|---|---|
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| English | en | ~1,050 / ~1,050 (100%) | yes / yes / no help | full | yes | **full** | yes | 0 |
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| Simplified Chinese (Mandarin) | zh-Hans | 0 (0%) | no | renders with system CJK fonts (asset policy excludes Noto CJK from builds); UAX #14 breaking; **no IME composition**; no true vertical layout | no | none | yes | 6–10 (incl. IME) |
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| Spanish | es | 0 (0%) | no | full (Latin) | no | none | yes (es, es-MX) | 3–5 |
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| Hindi | hi | 0 (0%) | no | Devanagari shaping through HarfRust, untested; no bundled Devanagari font | no | none | **no** (Windows only) | 4–7 |
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| Arabic | ar | 0 (0%) | no | bidi, contextual shaping, kashida justification, RTL bullets and caret (#4); **UI not mirrored**; browser export shows boxes (#81) | no | none | yes | 10–16 (incl. UI mirroring) |
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| French | fr | 0 (0%) | no | full (Latin) | no | none | yes (fr, fr-CA) | 3–5 |
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| Portuguese | pt | 0 (0%) | no | full (Latin) | no | none | yes (pt-BR, pt-PT) | 3–5 |
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| Indonesian | id | 0 (0%) | no | full (Latin) | no | none | yes | 3–5 |
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| Japanese | ja | 0 (0%) | no | renders with system or craft-fonts Japanese faces; no IME composition; vertical text is rotated, not laid out vertically | no | none | yes | 4–7 |
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| German | de | 0 (0%) | no | full (Latin) | no | none | yes | 3–5 |
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| Korean | ko | 0 (0%) | no | system Hangul fonts; no IME composition | no | none | yes | 4–7 |
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| Vietnamese | vi | 0 (0%) | no | stacked diacritics through HarfRust | no | none | **no** (Windows only) | 3–5 |
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Other languages shipped: **0** (Ukrainian is in review as PR #34). PowerPoint for Mac ships 16 more
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than the twelve above: Czech, Danish, Greek, Finnish, Hebrew, Hungarian, Italian, Dutch, Norwegian,
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Polish, Russian, Slovak, Swedish, Thai, Turkish and Traditional Chinese.
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Per-language hours assume the infrastructure exists: **8–14 h** once for a string catalog (copy a
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sibling app's approach, e.g. EffectCraft's menu and panel catalogs), a language setting that follows
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the system (#15), plural and number formatting, and an `xtask` check that every key has a
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translation. IME composition (3–6 h) is counted once, under Simplified Chinese.
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## Proofing languages
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PowerPoint checks spelling in dozens of languages and lets each run carry a proofing language.
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DeckCraft keeps `a:rPr/@lang` on round trip but its spelling check is a small English list of
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common misspellings (`crates/engine/src/cmd/review.rs`); see [gaps.md](gaps.md#proofing-spelling-thesaurus-autocorrect).
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## Revision history
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| Date | Change | Summary |
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| 2026-10-10 | major | Created: twelve-language table, ~1,050 UI strings measured, PowerPoint for Mac's 26 languages from its bundle |
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