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Consider un-deprecating the Hijri and Chinese calendar aliases or making them newtypes

C-calendarComponent: CalendarsComponent: Calendars

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

Status: Open.

#6963 In unicode-org/icu4x;

· sffc opened on Sep 19, 2025

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2.1 Blocking ⟨P1⟩

Should the Rules traits be marked UnstableSealed?

C-calendarComponent: CalendarsComponent: Calendars

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

Status: Open.

#6962 In unicode-org/icu4x;

· sffc opened on Sep 19, 2025

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2.1 Blocking ⟨P1⟩

Figure out the Rules trait as it relates to Date::from_fields

C-calendarComponent: CalendarsComponent: Calendars

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

Status: Open.

#6959 In unicode-org/icu4x;

· sffc opened on Sep 18, 2025

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2.1 Blocking ⟨P1⟩

Complete the East-Asian calendar matrix

C-calendarComponent: CalendarsComponent: Calendars

Status: Open.

#6946 In unicode-org/icu4x;

· robertbastian opened on Sep 16, 2025

Regarding retrieval of Unihan property in ICU4X

C-unicodeComponent: Props, sets, triesComponent: Props, sets, tries

Status: Open.

#6941 In unicode-org/icu4x;

· opnuub opened on Sep 13, 2025

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2.x Priority ⟨P2⟩

Add iterators over UTF/Latin1 slices that fuse a CodePointTrie lookup

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

C-collatorComponent: Collation, normalizationComponent: Collation, normalization

C-segmentationComponent: SegmentationComponent: Segmentation

C-unicodeComponent: Props, sets, triesComponent: Props, sets, tries

Status: Open.

#6925 In unicode-org/icu4x;

· hsivonen opened on Sep 8, 2025

Consider making the segmenter access CodePointTrie in a way that omits the out of range check

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

C-segmentationComponent: SegmentationComponent: Segmentation

Status: Open.

#6923 In unicode-org/icu4x;

· hsivonen opened on Sep 8, 2025

Add ability for reverse-lookup (string retrieval) in ZeroTrie

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

Status: Open.

#6922 In unicode-org/icu4x;

· sffc opened on Sep 7, 2025

Make a ZeroTrie dense data optimization

Status: Open.

#6920 In unicode-org/icu4x;

· sffc opened on Sep 5, 2025

Investigate building -u-co-unihan collations without the und-u-co-private-unihan include

A-dataArea: Data coverage or qualityArea: Data coverage or quality

C-collatorComponent: Collation, normalizationComponent: Collation, normalization

Status: Open.

#6918 In unicode-org/icu4x;

· hsivonen opened on Sep 5, 2025

Migrate to CategorizedFormatter and Remove Legacy UnitsFormatter

Status: Open.

#6900 In unicode-org/icu4x;

· younies opened on Aug 26, 2025

Review icu_properties and icu_casemap tries for perf-sensitive lookup by characters in the U+1000 to U+FFFF range

A-dataArea: Data coverage or qualityArea: Data coverage or quality

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

C-unicodeComponent: Props, sets, triesComponent: Props, sets, tries

Status: Open.

#6885 In unicode-org/icu4x;

· hsivonen opened on Aug 20, 2025

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Backlog ⟨P4⟩