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Graduate API for Date::added() and Date::until()

C-calendarComponent: CalendarsComponent: Calendars

S-mediumSize: Less than a week (larger bug fix or enhancement)Size: Less than a week (larger bug fix or enhancement)

U-temporalUser: Temporal and V8User: Temporal and V8

Status: Open.

#3964 In unicode-org/icu4x;

· hsivonen opened on Aug 29, 2023

Reconsider shape of DateDuration

C-calendarComponent: CalendarsComponent: Calendars

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

Status: Open.

#7059 In unicode-org/icu4x;

· sffc opened on Oct 9, 2025

Introduce a validated Month type

C-calendarComponent: CalendarsComponent: Calendars

Status: Open.

#7149 In unicode-org/icu4x;

· robertbastian opened on Oct 23, 2025

Date::try_new_hebrew, try_new_chinese, and try_new_dangi should take month codes

C-calendarComponent: CalendarsComponent: Calendars

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

S-smallSize: One afternoon (small bug fix or enhancement)Size: One afternoon (small bug fix or enhancement)

Status: Open.

#7043 In unicode-org/icu4x;

· sffc opened on Oct 7, 2025

Have a better API changelog

Status: Open.

#7153 In unicode-org/icu4x;

· Manishearth opened on Oct 23, 2025

Improved changelog procedure

Status: Open.

#7154 In unicode-org/icu4x;

· Manishearth opened on Oct 23, 2025

add enumerated property NumericType to icu_properties

Status: Open (in progress).

unicode-org/icu4xnumber 7157

#7157 In unicode-org/icu4x;

· m4rch3n1ng opened on Oct 23, 2025

Graduate Date::from_fields

C-calendarComponent: CalendarsComponent: Calendars

U-temporalUser: Temporal and V8User: Temporal and V8

Status: Open.

#7161 In unicode-org/icu4x;

· Manishearth opened on Oct 23, 2025

Add more tests around DateDuration

C-calendarComponent: CalendarsComponent: Calendars

U-temporalUser: Temporal and V8User: Temporal and V8

Status: Open.

#7078 In unicode-org/icu4x;

· sffc opened on Oct 13, 2025

Consider narrower error type between try_new_from_codes and try_from_fields

C-calendarComponent: CalendarsComponent: Calendars

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

Status: Open.

#7010 In unicode-org/icu4x;

· sffc opened on Oct 1, 2025

Add FFI for collator sort keys

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

Status: Open.

#7177 In unicode-org/icu4x;

· Manishearth opened on Oct 27, 2025

Stabilize CollationKeySink

Status: Open.

#7178 In unicode-org/icu4x;

· Manishearth opened on Oct 27, 2025

Improve testing of simulated astronomical calendar invariants

C-calendarComponent: CalendarsComponent: Calendars

milestone-non-blockingThese issues are in a milestone, but do not block the milestone (and can be removed if necessary)These issues are in a milestone, but do not block the milestone (and can be removed if necessary)

Status: Open.

#7121 In unicode-org/icu4x;

· sffc opened on Oct 18, 2025

Behavior of Date::try_new_added with large durations

C-calendarComponent: CalendarsComponent: Calendars

U-temporalUser: Temporal and V8User: Temporal and V8

Status: Open.

#7207 In unicode-org/icu4x;

· Manishearth opened on Oct 31, 2025

Retire <code>icu_harfbuzz</code> crate

Status: Open.

#7210 In unicode-org/icu4x;

· robertbastian opened on Nov 3, 2025

Decide on potentially per-calendar behavior near extreme date values

C-calendarComponent: CalendarsComponent: Calendars

discuss-priorityDiscuss at the next ICU4X meetingDiscuss at the next ICU4X meeting

Status: Open.

#7076 In unicode-org/icu4x;

· Manishearth opened on Oct 13, 2025

<code>Date::day_of_week</code> is a bad name

C-calendarComponent: CalendarsComponent: Calendars

Status: Open.

#7228 In unicode-org/icu4x;

· robertbastian opened on Nov 7, 2025

[Date]TimeFormatter constructors don't take hour12 override

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

S-smallSize: One afternoon (small bug fix or enhancement)Size: One afternoon (small bug fix or enhancement)

T-coreType: Required functionalityType: Required functionality

U-ecma402User: ECMA-402 compatibilityUser: ECMA-402 compatibility

Status: Open.

#3881 In unicode-org/icu4x;

· hsivonen opened on Aug 17, 2023

Define traits for Unicode and ECMA 402 APIs

C-metaComponent: Relating to ICU4X as a wholeComponent: Relating to ICU4X as a whole

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

T-enhancementType: Nice-to-have but not requiredType: Nice-to-have but not required

U-ecma402User: ECMA-402 compatibilityUser: ECMA-402 compatibility

Status: Open.

#20 In unicode-org/icu4x;

· filmil opened on Mar 27, 2020

Finish compact decimal formatting

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

U-ecma402User: ECMA-402 compatibilityUser: ECMA-402 compatibility

Status: Open.

#3647 In unicode-org/icu4x;

· sffc opened on Jul 7, 2023

Support ECMA-402 NumberFormat-compatible engineering number formatting

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

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

discuss-triagedThe stakeholders for this issue have been identified and it can be discussed out-of-bandThe stakeholders for this issue have been identified and it can be discussed out-of-band

U-ecma402User: ECMA-402 compatibilityUser: ECMA-402 compatibility

Status: Open.

#3984 In unicode-org/icu4x;

· hsivonen opened on Aug 31, 2023

Compact decimal should retain 2 significant digits for small numbers

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

T-bugType: Bad behavior, security, privacyType: Bad behavior, security, privacy

U-ecma402User: ECMA-402 compatibilityUser: ECMA-402 compatibility

Status: Open.

#4241 In unicode-org/icu4x;

· sffc opened on Oct 30, 2023

Proposal for Compact Decimal Types

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

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

S-smallSize: One afternoon (small bug fix or enhancement)Size: One afternoon (small bug fix or enhancement)

Status: Open.

#5835 In unicode-org/icu4x;

· younies opened on Nov 18, 2024

CompactDecimalFormatter::format_fixed_decimal should preserve small fractional numbers

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

T-bugType: Bad behavior, security, privacyType: Bad behavior, security, privacy

U-ecma402User: ECMA-402 compatibilityUser: ECMA-402 compatibility

Status: Open.

#6678 In unicode-org/icu4x;

· sffc opened on Jun 16, 2025

Make a ZeroTrie dense data optimization

A-performanceArea: Performance (CPU, Memory)Area: Performance (CPU, Memory)

C-dnamesComponent: Language/Region/... Display NamesComponent: Language/Region/... Display Names

C-zerovecComponent: Yoke, ZeroVec, DataBakeComponent: Yoke, ZeroVec, DataBake

Status: Open.

#6920 In unicode-org/icu4x;

· sffc opened on Sep 5, 2025