Verified directly (java.util.Locale, NSLocale, and Intl.DisplayNames
all tested outside the app) that every platform's locale data resolves
"EU" correctly on its own — "European Union" in en, "Union européenne"
in fr, "Europäische Union" in de, etc. — via CLDR, which defines "EU"
as a grouping in its own right despite it not being a real ISO 3166-1
country code. The hardcoded English fallback was based on an
assumption that was never actually verified.
Removes the special case from the shared code entirely. That required
two platform-side fixes to stop blocking "EU" from ever reaching the
platform lookup:
- JVM/Android: dropped the Locale.getISOCountries() membership guard
(which excluded "EU") in favor of detecting an unresolvable code by
getDisplayCountry() echoing it back unchanged.
- Web: jsRegionDisplayName() was hardcoding locale 'en' for
Intl.DisplayNames — changed to undefined (the browser's own locale),
matching what the other platforms already did. Without this fix,
"EU" would resolve, but only ever in English on web.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FXcrACM5sok3M1KQJ8kByy
tyiuandClaude Sonnet 5
bb4602e8fa