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Date::try_new_gregorian should take the era as an argument

C-datetimeComponent: datetime, calendars, time zonesComponent: datetime, calendars, time zones

discussDiscuss at a future ICU4X-SC meetingDiscuss at a future ICU4X-SC meeting

Status: Open.

#7883 In unicode-org/icu4x;

· sffc opened on Apr 17, 2026

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ICU4X 3.0

Titlecase wasm demo is broken

A-ffiArea: FFI, WebAssembly, TranspilationArea: FFI, WebAssembly, Transpilation

Status: Open.

#7881 In unicode-org/icu4x;

· sffc opened on Apr 16, 2026

Test the collator fallback behavior in datagen

C-collatorComponent: Collation, normalizationComponent: Collation, normalization

T-docs-testsType: Code change outside core libraryType: Code change outside core library

Status: Open.

#7873 In unicode-org/icu4x;

· sffc opened on Apr 14, 2026

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Tech Debt Priority ⟨P2⟩

The metazone assignment for 1970-01-01 is used before 1970

C-datetimeComponent: datetime, calendars, time zonesComponent: datetime, calendars, time zones

Status: Open.

#7870 In unicode-org/icu4x;

· robertbastian opened on Apr 14, 2026

Inconsistent naming NoCalendarFormatter vs FixedCalendarDateTimeFormatter

C-datetimeComponent: datetime, calendars, time zonesComponent: datetime, calendars, time zones

Status: Open.

#7869 In unicode-org/icu4x;

· robertbastian opened on Apr 14, 2026

Should LocaleDirectionality::get perform full Add-Likely-Subtags algorithm?

C-localeComponent: Locale identifiers, BCP47Component: Locale identifiers, BCP47

Status: Open.

#7866 In unicode-org/icu4x;

· anba opened on Apr 10, 2026

LocaleExpander::maximize doesn't remove Zzzz script and ZZ region subtags before matching

C-localeComponent: Locale identifiers, BCP47Component: Locale identifiers, BCP47

Status: Open.

#7865 In unicode-org/icu4x;

· anba opened on Apr 10, 2026

jiff, chrono, and time integrations break the documented invariant of UtcOffset?

C-calendarComponent: CalendarsComponent: Calendars

Status: Open.

#7864 In unicode-org/icu4x;

· sffc opened on Apr 9, 2026

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2.3 Release ⟨P1⟩

python bindings!

A-ffiArea: FFI, WebAssembly, TranspilationArea: FFI, WebAssembly, Transpilation

C-ffi-infraComponent: Diplomat, horizontal FFIComponent: Diplomat, horizontal FFI

Status: Open.

#7862 In unicode-org/icu4x;

· markjm opened on Apr 9, 2026

Trailing case adjustment doesn't handle Dutch

U-gboardUser: GboardUser: Gboard

Status: Open.

#7861 In unicode-org/icu4x;

· Manishearth opened on Apr 9, 2026

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2.3 Release ⟨P1⟩

Implement datetime ordinal formatting

C-datetimeComponent: datetime, calendars, time zonesComponent: datetime, calendars, time zones

Status: Open.

#7860 In unicode-org/icu4x;

· sffc opened on Apr 8, 2026

2.3 Headline: Non-Unit Decimal Formatting

C-numbersComponent: Numbers, units, currenciesComponent: Numbers, units, currencies

S-epicSize: Major project (create smaller child issues)Size: Major project (create smaller child issues)

Status: Open.

#7859 In unicode-org/icu4x;

· sffc opened on Apr 8, 2026

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2.3 Release ⟨P1⟩