TomUviandClaude Opus 5
3ad73df76a
153 posts under the SwiftUI tag, plus wwdc25 and wwdc26. Filtering them against what our code actually contains turned up one real defect and a short list worth keeping. The defect is plurals. A checkout screen renders "\(count) coupons", whose Czech translation is the single form "%lld kupónů" — so it says "1 kupónů" and "3 kupónů", wrong for every count below five. The article that surfaced it recommends inflect:, which covers English, Spanish and six others but not Czech, the language that needs three forms rather than two. Plural variations in the String Catalog are the fix for us; the entry says so rather than repeating the article's advice. Two entries are filed against a future rather than now: swipe action buttons draw their titles from iOS 26, which will surprise us the day we add a custom one, and a Form inside a sheet covers the glass behind it, which starts to matter if the payment sheet ever gets a medium detent. The rest is recorded as swept and skipped, with reasons — including that Core Spotlight and the search tab are things we already do correctly, and that three posts are covered better by the skills shipping inside Xcode. A sweep that leaves no trace of what it rejected gets repeated. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
53 lines
2.0 KiB
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53 lines
2.0 KiB
Markdown
# Localization
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## Plurals: inflection is not enough for Czech
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**What it is.** SwiftUI parses an inflection attribute inside a `Text`
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literal and applies Foundation's grammar agreement, so the noun follows
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the number without any manual branching:
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```swift
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Text("You read ^[\(bookCount) book](inflect: true) this year!")
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```
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**Language support is the catch.** It shipped for English and Spanish in
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iOS 15, and iOS 18 added German, French, Italian, Portuguese, Hindi and
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Korean. **Czech is not on that list**, and Czech is exactly the language
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that needs it: 1 kupón, 2–4 kupóny, 5+ kupónů — three forms where English
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has two.
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**What it found in our code.** A real bug, not a nicety:
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```swift
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Text("\(activeCoupons.count) coupons") // CardDetailView, checkout screen
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```
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The Czech translation in the catalogue is a single string, `%lld kupónů`,
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so the app renders "1 kupónů" and "3 kupónů" — wrong for every count
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except five and up. It sits on the checkout screen, which is the screen
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people actually look at in a shop.
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**The fix for us** is plural variations in the String Catalog rather than
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`inflect:`. Xcode's "Vary by Plural" writes a `variations.plural` block
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with `one` / `few` / `many` / `other`, and Czech uses all of them:
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| category | counts | Czech |
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|---|---|---|
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| one | 1 | 1 kupón |
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| few | 2–4 | 3 kupóny |
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| many | fractions | 1,5 kupónu |
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| other | 0, 5+ | 5 kupónů |
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Worth auditing every interpolated count in the UI at the same time; a
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count wrapped in parentheses — "Send unsent receipts (3)" — dodges the
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problem entirely and is a reasonable fallback where a plural form would
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be awkward.
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**Step forward?** Yes, and overdue. This is the kind of defect that never
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shows up in a test and that a Czech speaker notices immediately.
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**Source.** Natalia Panferova, "Handle plurals in SwiftUI Text views with
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inflection", nilcoalescing.com, 13 Jan 2025. Read 18 Aug 2026. The article
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is about `inflect:`; the Czech conclusion is ours, from checking which
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languages that API actually covers.
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