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Changelog

Unreleased

ICU4X 2.0 is ICU4X's new major release. Many things have changed, we recommend going through the full changelog for 2.0, 2.0-beta1, and 2.0-beta2 to understand the changes fully.

Some major changes worth highlighting:

  • Most locale-dependent APIs now take type-safe "preferences" objects instead of locales.

    • Preference bags are often built from a locale, but they can also be built manually or merged from other sources.
    • Preference bags are taken by value, so most call sites will need to change from &locale.into() to locale.into() or (&locale).into()

  • The datetime formatting APIs have been completely redesigned for better data usage and performance. We recommend looking at the new API and using it from the ground up, rather than replacing API calls one at a time.

  • Components

    • General
      • ...
    • icu_calendar
      • Rename Islamic calendars to Hijri (unicode-org#6214)
      • Collapse IslamicCivil into IslamicTabular (unicode-org#6384)
      • Rename IslamicObservational to IslamicSimulated
      • Rename wrap_calendar_in_* APIs to as_borrowed, into_ref_counted, into_atomic_ref_counted (unicode-org#6392)
    • icu_collections
      • Remove some panics from CodePointTrie, which should no longer pull in panic machinery even with arithmetic panics enabled for lookup (unicode-org#6204)
    • icu_datetime

  • Data model and providers

    • icu_experimental
      • dimension
        • units
    • General
      • ...
    • icu_provider
    • icu_provider_fs

  • Utils

    • General
      • ...
    • calendrical_calculations

icu4x 2.0-beta2

icu4x 2.0-beta1

icu4x 1.5.x

  • icu_calendar
    • (1.5.1) Fix Japanese calendar Gregorian era year 0 (unicode-org#4968)
    • (1.5.2) Enforce C,packed, not just packed, on ULE types, fixing for incoming changes to repr(Rust) (unicode-org#5049)
  • icu_datetime
  • icu_casemap
    • (1.5.1) Enforce C,packed, not just packed, on ULE types, fixing for incoming changes to repr(Rust) (unicode-org#5049)
  • icu_capi
    • (1.5.1) Fix situations in which libc_alloc is specified as a dependency (unicode-org#5119)
  • icu_properties
    • (1.5.1) Enforce C,packed, not just packed, on ULE types, fixing for incoming changes to repr(Rust) (unicode-org#5049)
  • zerovec
    • (0.10.3) Fix size regression by making twox-hash dep no_std (unicode-org#5007)
    • (0.10.3) Enforce C,packed, not just packed, on ULE types, fixing for incoming changes to repr(Rust) (unicode-org#5049)
    • (0.10.4) Enforce C,packed on OptionVarULE (unicode-org#5143)
  • zerovec_derive
    • (0.10.3) Enforce C,packed, not just packed, on ULE types, fixing for incoming changes to repr(Rust) (unicode-org#5049) icu_*_data
    • (1.5.1) Add build.rs to workspace includes (unicode-org#6356)

icu4x 1.5 (May 28, 2024)

  • Components
    • General
    • icu_calendar
    • icu_collections
    • icu_normalizer
      • Make UTS 46 normalization non-experimental (#4712)
    • icu_datetime
      • Experimental "neo" datetime formatter with support for semantic skeleta and fine-grained data slicing (unicode-org#1317, unicode-org#3347)
      • Writeable and Display implementations now don't return fmt::Errors that don't originate from the fmt::Write anymore (#4732, #4851, #4863)
      • Make CldrCalendar trait sealed except with experimental feature (unicode-org#4392)
      • FormattedDateTime and FormattedZonedDateTime now implement Clone and Copy (unicode-org#4476)
    • icu_experimental
      • New home for all experimental components. This supersedes the published icu_compactdecimal, icu_displaynames, icu_relativetime, icu_transliterate, and icu_unicodeset_parse crates (#4564)
      • New experimental component personnames (#4050)
      • New experimental component dimension
        • Added CurrencyFormatter, which can format any currency based on the locale and the width (short and narrow are supported for now).
      • New experimental component units (#4605)
        • Added UnitsConverter, which can convert any single or compound units (such as meter and square-meter-per-second) to any compatible single or compound units.
    • icu_locid
      • Added total_cmp functions to Locale and other types to make them easier to use in BTreeSet (unicode-org#4608)
    • icu_locid_transform
    • icu_plurals
    • icu_properties
    • icu_segmenter
    • icu_timezone
  • Data model and providers
    • icu_datagen
      • Add new API structure to DatagenDriver to better express the different aspects of FallbackMode (unicode-org#4629)
      • Datagen shows elapsed time for keys that are slow to generate (unicode-org#4469)
      • Datagen performance improvement by caching supported locales (unicode-org#4470)
      • Never use fallback for baked segmentation data (unicode-org#4510)
      • Propagate extension keywords and auxiliary keys to explicit locales (unicode-org#4533)
      • Add baked data macros to generate IterableDataProvider (#4800, #4868)
      • Add an option to generate data from an existing DataProvider, instead of from sources (#4814)
      • Implement DeduplicationStrategy::RetainBaseLanguages (unicode-org#4836)
    • icu_provider
      • (Small breakage) DataPayload::new_owned() is no longer const, this was a mistake (unicode-org#4456)
      • Add NeverMarker to allow for DataProvider bounds that never return data (unicode-org#4186)
      • Add BoundProvider to allow temporal separation between key and request (unicode-org#4877)
      • Add DataPayloadOr for more efficient memory layout to reduce stack size (unicode-org#4463)
    • icu_provider_blob
  • FFI:
  • Utilities

icu4x 1.4.x

icu4x 1.4 (Nov 16, 2023)

icu4x 1.3.x

Some crates received additional 1.3.x patch releases:

icu4x 1.3.2 (Oct 4, 2023)

1.3.2 was released to clean up the range dependency on zerovec deliberately introduced in 1.3.0. It includes all previous 1.3.x changes

icu4x 1.3.1

A subset of crates received a 1.3.1 patch release, to incorporate documentation fixes (unicode-org#4096, unicode-org#4097, unicode-org#4099, unicode-org#4101). These crates were: icu_calendar, icu_casemap, icu_datetime, icu_locid_transform, icu_provider.

icu4x 1.3 (Sep 25, 2023)

  • General
    • All updated crates:
    • Components now have the option to use compiled_data, an efficient default set of data baked in to the component. This is now recommended over using a data provider unless you have specific needs driving it.
  • Data model and providers
  • Components:
    • Cross component:
      • All component crates now have a default compiled_data feature that enables constructors that do not require data providers, instead using data compiled into the library
    • icu_calendar
      • Support for new non-Gregorian calendars: Persian (Solar Hijri), ROC, Hebrew, Chinese, Korean (Dangi), and Islamic (civil, observational, tabular, and Umm al-Qura). Lunar calendars are not yet fully optimized.
      • Add Ord and PartialOrd to icu_calendar types (unicode-org#3468)
      • Add cyclic year to FormattableYear (unicode-org#3581)
    • icu_casemap
      • Newly stabilized crate
    • icu_collator
      • No additional changes
    • icu_collections
    • icu_datetime
      • Formatting for the new calendars added in icu_calendar
        • Includes preview formatting for Chinese and Korean with cyclic years and leap months
      • Hardening of edge cases surrounding the Calendar trait
      • TimeZoneFormatter::load_*_format functions:
        • Those with a provider argument gain an equivalent TimeZoneFormatter::load_*_format gated by compiled_data
        • Those without a provider argument renamed to TimeZoneFormatter::include_*_format with deprecation warning
    • icu_decimal
      • No additional changes
    • icu_list
      • No additional changes
    • icu_locid
      • Declarative macros are now re-exported from their own modules; old exports are deprecated; for example, use icu::locid::extensions::unicode::value now works, instead of use icu::locid::extensions_unicode_value
    • icu_locid_transform
      • New home of LocaleFallbacker and fallback module previously found in icu_provider_adapters
      • New LocaleDirectionality to access the right-to-left status of locales
    • icu_normalizer
      • No additional changes
    • icu_plurals
      • No additional changes
    • icu_properties
      • Compiled data functions added to sets and maps without load_ prefix: icu::properties::sets::basic_emoji()
    • icu_segmenter
    • icu_timezone
      • New IanaToBcp47Mapper for converting between IANA time zone names and BCP-47 time zone names (unicode-org#2909)
  • Utils:
  • FFI:
    • Feature support
      • Case mapping exports:
        • ICU4XCaseMapper
        • ICU4XCaseMapCloser
        • ICU4XTitlecaseMapper
        • ICU4XTrailingCase
      • Other new exports:
        • ICU4XCodePointSetBuilder
        • ICU4XLocaleDirection
        • ICU4XLocaleDirectionality
        • ICU4XLocaleFallbackSupplement
        • ICU4XIanaToBcp47Mapper
      • Enum variants added for calendar types and errors
    • C++
  • Experimental:
    • bies
      • No additional changes
    • icu_compactdecimal
    • displaynames
      • New VariantDisplayNames for accessing display names of locale variant subtags (unicode-org#3461)
      • LocaleDisplayNamesFormatter now supports full UTS 35 language identifier formatting (unicode-org#3587)
    • harfbuzz
      • No additional changes
    • ixdtf
      • No additional changes
    • relativetime
      • No additional changes
    • transliterate: New crate: 0.1.0
    • unicodeset_parse: New crate: 0.1.0
    • zerotrie: New crate: 0.1.0

icu4x 1.2.x (Apr 17, 2023)

Note: A subset of crates received patch releases in the 1.2 stream.

  • databake: 0.1.5

    • Fixed #3356, adding allow for clippy false-positives

  • icu_capi 1.2.1

    • Fixed #3344, buffer_provider feature accidentally pulling in extra crates

  • icu_capi 1.2.2

    • Use intptr_t instead of ssize_t for portability (diplomat #326)

  • icu_datagen 1.2.1

    • Fixed #3339, incorrect Cargo features

  • icu_datagen 1.2.3

    • Fixed #3355, adding MSRV annotations to generated code
    • Fixed #3369, making datagen call rustfmt directly instead of using the rust-format dependency

  • icu_datagen 1.2.4

    • Remove dependency on clap's "cargo" feature to better support non-Cargo users (#3388)

  • icu_datagen 1.2.5

    • Remove runtime dependency on segmenter data pulled from the cargo cache (#3391)

  • icu_locid_transform 1.2.1

    • Fixed #3332, missing +?Sized bound

  • icu_segmenter 1.2.1

    • Fixed #3341, incorrect results on some strings with mixed scripts

  • icu_provider 1.2.1

    • Do not autoenable postcard/use-std (#3376)

  • icu_datetime 1.2.1

    • Remove superfluous JapaneseEraV1 provider bounds on TypedZonedDateTimeFormatter #3379

icu4x 1.2 (Apr 13, 2023)

  • General
    • All updated crates:
      • Add missing Debug impls (#3206)
      • Update Rust edition to 2021 (#3075)
      • Internal clippy fixes
      • Unless otherwise specified, all crate updates are to version 1.2.
      • Out-of-cycle releases do not get their own changelog entries, so some entries may span multiple patch or pre-1.0 minor versions.
  • Data model and providers
    • icu_provider:
      • Add support for silencing expected DataErrors (#3262)
      • Removing dhat dependency (#3138)
      • Make trait DataMarker: 'static (#3137)
    • icu_datagen: (includes patch updates 1.1.1 and 1.1.2)
      • (lib) Add Out::Baked and BakedOptions; deprecate Out::Module (#3130)
      • (cli) Bump clap to 4.0, move to using derive (#3149)
      • Pare down datagen deps (#3160)
      • Support changes from CLDR 43 (#3182, #3201, #3204, #3205)
      • Add support for complemented range iterators (#3198)
      • Using byte string literals in databake (#3040)\
      • Datagen support for all new component features
      • (performance) Less ZeroMap mutation in datagen (#3098)
    • icu_provider_adapters: No other changes
    • icu_provider_blob: No other changes
    • icu_provider_fs:
      • Remove sha2 dep (#3160)
    • icu_provider_macros: No other changes
  • Components:
    • Cross component: No additional cross-component changes
    • icu_calendar
      • Document the bounds of IsoSecond, Minute and Hour (#3156)
    • icu_collator: No other changes
    • icu_collections:
      • Add to_u32 for TrieValue (#3222)
      • Add CPT::try_alloc_map_value (#3207)
      • Add support for coalescing range iterators (#3198)
      • Allow inversion lists to be built from ranges that include char::MAX (#3203)
    • icu_datetime: No other changes
    • icu_decimal
      • Add From<GroupingStrategy> for FixedDecimalFormatterOptions (#3045)
    • icu_list
      • ListJoinerPattern::from_parts_unchecked() is now from_parts() and panics when necessary (#3052)
    • icu_locid
      • Reduce size of internal ShortVec abstraction (#3200)
      • Use Box in place of Vec in ShortVec (#3220)
    • icu_locid_transform
      • The default set of likely subtags is now only the subset of languages that have a basic or greater CLDR coverage level; the full set is much larger in CLDR 43 and can be accessed via new constructors (#3148, #3158, #3197)
    • icu_normalizer: No other changes
    • icu_plurals: No other changes
    • icu_properties
      • Add ability to obtain enumerated property value names from enum values (#3222, #3276)
      • Add ability to obtain enumerated property values from their names (#3103, #3152)
      • Add support for runtime-selected property lookup (#3169)
      • Add support for complemented range iterators (#3198)
      • Support data for Bidi properties with combined data structure (#3026, #3258)
    • icu_segmenter
      • Graduated from experimental
      • Add "auto" feature, enable "lstm" feature, establish new data key structure, improve error handling, and revise word and line segmenter constructors (#3010, #3267, #3270)
      • Rename icu_segmenter enums (#3285)
      • Allow access to rule status via word_type in WordSegmenter and over FFI (#3139, #3275)
      • Upgrade segmenter to Unicode 15.0.0 (#3273)
      • Return a line break at index 0 (#3289)
      • Improve the LSTM code and data model to be zero copy, improve error handling, be future-proof, and vectorize more operations (#3210, #3217, #3233, #3250, #3254, #3264, #3291)
      • Remove ndarray dependency (#3192)
      • Silencing expected DataErrors (#3262)
      • Fix SB10 rule (#3126)
      • Polished docs and examples
    • icu_timezone: No other changes
  • Utils:
  • crlify: No change (still at 1.0.1)
  • databake: 1.1.3 -> 1.1.4
    • Using byte string literals in databake (#3040)
  • deduplicating_array: 0.1.3 -> 0.1.4
  • fixed_decimal: 0.5.2 -> 0.5.3
  • litemap: 0.6.1 -> 0.7.0
    • Move FromIterator impl to new StoreFromIterable trait, allowing constructing LiteMaps with different backing stores (#3220)
  • pattern: 0.1.3 -> 0.1.4
  • tinystr: No change (still at 0.7.1)
  • tzif: No change (still at 0.2.1)
  • writeable: 0.5.1 -> 0.5.2
  • yoke: 0.7.0 -> 0.7.1
  • yoke-derive: 0.7.0 -> 0.7.1
  • zerofrom: 0.1.1 -> 0.1.2
  • zerofrom-derive: 0.1.1 -> 0.1.2
  • zerovec: 0.9.2 -> 0.9.4
    • Add initial ZeroHashMap (#2579)
    • Add ZeroSlice::get_as_array() (#3192)
    • Add range dep of yoke to zerovec (#3089)
  • zerovec-derive: 0.9.2 -> 0.9.4
    • Add #[zerovec::derive(Hash)] (#2579)
    • Avoid using derive on autogenerated packed types (#3069)
  • FFI:
    • Feature support
      • Property value-to-name mappings (#3196)
      • UnicodeSets (including exemplar chars) (#3177)
      • Runtime-selected property lookup (#3169)
      • Property lookup ranges and GeneralCategoryGroup (#3230)
      • LocaleExpander: Add extended and non-extended constructors (#3197)
      • Fill in BreakIterator API (#3275)
      • Bidi reorder_visual (#3183)
      • (experimental) Strongly typed display names API (#3190, #3188)
    • Add feature slicing to icu_capi (#3216)
    • Better FFI provider ownership (#3140)
  • Experimental:
    • bies: 0.2.0 -> 0.2.1
    • icu_casemap: 0.7.1 -> 0.7.2
    • icu_compactdecimal: 0.1.0 -> 0.2.0
    • Support configurable grouping separators in CompactDecimalFormatter (#3045)
    • icu_displaynames: 0.8.0 -> 0.10.0
      • Add ScriptDisplayNames (#3317)
      • Add LanguageDisplayNames with support for variants (#3058, #3113)
      • Add stronger typing (#3190)
    • icu_harfbuzz: New experimental port: Harfbuzz integration for ICU4X (v0.1.0)
    • icu_relativetime: 0.1.0 -> 0.1.1

icu4x 1.1 (Jan 26, 2023)

  • icu_calendar

    • Fix bug in simple_week_of() around unit size (#2951)
    • Fix math in calendar (#2714)
    • Add div_rem_euclid and use it in icu_calendar (#2704)
    • Fix Time::from_minute_with_remainder_days to handle negatives (#2643) (#2702)
    • doc improvements

  • icu_casemap

    • doc improvements

  • icu_collator

    • doc improvements

  • icu_collections

    • Add APIs for returning exemplar characters data (#2812)
    • Readable JSON inversion lists (#2855)
    • Add UnicodeSet that supports strings (#2796)
    • Add documentation on CodePointTrie details and perf considerations (#2717)

  • icu_codepointtrie_builder

    • internal improvements

  • icu_datetime

    • internal and doc improvements

  • icu_decimal

    • internal and doc improvements

  • icu_displaynames

    • DisplayNames fixes (#2918)
    • Rename Territory -> Region for display names component (#2895)
    • Transformer code for Language display names (#2871)
    • Adding a function to get display name for a region. (#2816)
    • Transformer code for display names component. (#2635)
    • doc improvements

  • icu_list

    • Untangling list provider from logic and fixing big endian safety bug (#2994)
    • Not allocating Writeables for regex evaluation (#2991)
    • doc improvements

  • icu_locid

    • Reject duplicated extensions (#2893)
    • More borrowing in locid's write_to_string (#2693)
    • doc improvements

  • icu_locid_transform

    • Clean up dependency specifications so serde isn't pulled in by default (#2696)
    • doc improvements

  • icu_normalizer

    • internal and doc improvements

  • icu_plurals

    • doc improvements

  • icu_properties

    • Add APIs for returning exemplar characters data (#2812)
    • Add API and testdata for Basic_Emoji property (#2802)
    • Add UnicodeSet that supports strings (#2796)
    • Update Script property value enums (#2787)
    • doc improvements

  • icu_segmenter

    • Make metacrate features more specific (#2932)
    • Remove serde dependency from segmenter with lstm feature. (#2904)
    • Simplify construction of grapheme cluster break iterators (#2870)
    • Store grapheme cluster payload instead of grapheme cluster segmenter. (#2864)
    • #[no_std] for LSTM segmenter (#2845)
    • icu_segmenter: enforce clippy::indexing_slicing. (#2325)
    • Use GraphemeClusterSegmenter in DictionarySegmenter and LstmSegmenter (#2716)
    • Rename *BreakSegmenter to *Segmenter (#2707)
    • Remove unnecessary language check for East Asian language (SA property) (#2705)
    • internal and doc improvements

  • icu_timezone

    • Adds a bytes parsing API for GMTOffset for CustomTimeZone and FFI (#2943, #2955)
    • doc improvements

  • icu_provider_adapters

    • Add more inner_mut functions in icu_provider_adapters (#2987)
    • Fix error propagation in MultiForkByErrorProvider (#2986)
    • Add mutation methods to MultiForkByErrorProvider (#2972)

  • icu_provider_blob

    • internal and doc improvements

  • icu_provider

    • Setting correct DataError for .as_deserializing(), .as_downcasting() (#2993)
    • doc improvements

  • icu_datagen

    • Removing experimental feature from datagen (#3005)
    • Fixing Spanish list regex (#2989)
    • Datagen CLI improvements (#2950)
    • Some reexports for datagen (#2958)
    • Databake improvements (#2906)
    • Exclude certain collations by default and add option to include them (#2789)
    • Allowing no keys in datagen CLI (#2731)
    • Fixing baked datagen for no keys and keys with no data (#2698)
    • Internal and doc improvements

  • icu_provider_fs

    • internal and doc improvements

  • icu_testdata

    • stabilized metadata
    • doc improvements
    • CLDR 42 and ICU 72 data

  • bies

    • Bumped writeable version

  • databake

    • Doc improvements

  • fixed_decimal

    • Treat strings starting with a decimal point as valid in FixedDecimal::from_str() (#2937)
    • The actual formatting part of compact decimal formatting (#2898)
    • Allow noncompact CompactDecimal (#2889)
    • CompactDecimal and ScientificDecimal (#2847)
    • doc improvements

  • icu_pattern

    • internal improvements

  • litemap

    • internal and doc improvements

  • tinystr

    • Add std feature and Error impl for TinyStrError (#3009)
    • internal and doc improvements

  • tzif

    • internal and doc improvements

  • writeable

    • Using core integer log when available (#3015)
    • usize and isize implementation
    • internal and doc improvements

  • yoke

    • Add prove_covariance_manually guard for CoerceUnsized (#2936)
    • Allow clippy::forget_copy in derive(Yokeable) impl (#2775)
    • Fix soundness issue in Yoke::attach_to_cart() around implied bounds #2949

  • zerovec

    • ZeroMap2d cursors

Bug fixes in 1.0.x

icu_collator 1.0.1

  • Made case level setting actually take effect (#2892)

icu4x 1.0 (Sept 27, 2022)

  • General
    • Update license to Unicode-DFS-2016 (#2303)
    • Major improvements to documentation, bechmarks, and examples
    • Various performance and codesize improvements
    • FFI for all non-experimental components
  • Data model and providers
    • Polished baked data provider (#2098, #2126, #2147)
    • Data key extraction from binary (#1950)
    • Add LocaleFallbacker with locale fallback algorithm (#2036, #2115, #2186, #2567)
    • Making DataProvider: Sync + Send (#1853)
    • Update to Postcard 1.0 (#2037, #2091, #2438)
    • De-duplication in BlobDataProvider (#2062)
    • Move map_project to closures (#2185)
    • Renaming of many traits and functions in icu_provider (#2207, #2222, #2223)
    • Passing DataLocale by reference (#2224)
    • Fix feature specification in provider/fs (#2527)
    • Rename DataKey methods and return DataKeyPath (#2565)
    • Add some useful data provider impls; refactor AnyPayloadProvider (#2564)
    • Removing StaticDataProvider (#2582)
    • Removing InvariantDataProvider (#2159)
    • Renaming load_payload, load_resource (#2222)
    • Renaming DataOptions to DataLocale (#2223)
    • Use an abstract predicate function in ForkByKeyProvider (#2249)
    • Add UnvalidatedStr and use it in LocaleFallbackParentsV1 (#2502)
    • Add some useful data provider impls; refactor AnyPayloadProvider (#2564)
  • Components:
    • Cross component:
      • Format to Formatter rename (#2184)
      • Uniform constructor style across all components, see #2573 (#2293, #2305, #2309, #2316, #2318, #2326, #2327, #2329, #2330, #2332, #2333, #2334)
      • Remove format_to_writes (#2528)
      • Make error enums more consistent (#2649)
      • More Copy arguments (#2654)
    • calendar
      • Emit month codes from calendars (#2053)
      • Add Date::new_from_codes(); fix up per-calendar constructor functions (#2255)
      • Fix iso-to-fixed conversion (#1898)
      • Ethiopic calendars (#1831, #1902)
      • Replace hour/minute/second constructors new_unchecked() with getter number() (#1922)
      • Improve and rename types::Year/types::Month (#2157)
      • Add japanext calendar (#2181)
      • Replace unbounded arithmetic for calendar numeric types with bounded arithmetic. (#2273)
      • Make Japanext its own calendar type (#2311)
      • Pick default calendar based off of locale in AnyCalendar
      • Make offset_date handle wraparounds for months (#2373)
      • Hide duration stuff, rename IncludedInAnyCalendar (#2426)
      • week_of refactoring (#2462)
      • Fix arithmetic in Indian calendar (#2479)
      • Infallible from_minutes_since_local_unix_epoch() (#2646)
    • collator
      • New component (#1706)
      • Validate the length of last_primaries (#1916)
      • Use a higher numeric value for Strength::Identical (#1942)
      • Move and unescape collator and normalizer tests (#1943)
      • Tweak CollationMetadataV1 documentation and dead code (#1914)
      • GIGO fix-ups for the normalizer and the collator (#1931)
      • split_first_u16/split_first_u24 -> split_first (#2459)
      • Create options bag for CollatorOptions (#2475)
      • Clean up FFFD magic numbers in Collator with REPLACEMENT_CHAR (#2496)
      • Add traditional spanish and plumbing to make it work (#2497)
    • collections
      • New component (#2294, #2323, #2328, #2336)
      • Rename CodePointSet to CodePointInversionList (#2230)
      • Allow CodePointTrie to determine error_value at runtime from data (#2301)
      • Use GIGO with debug assertion in Char16Trie (#2537)
    • datetime
      • Formatting for AnyCalendars (#1987, #2146)
      • Renaming DateTimeFormatter (etc) to TypedDateTimeFormatter and AnyDateTimeFormatter to DateTimeFormatter (#2298)
      • DateFormatter cleanups (#2304)
      • Remove Calendar type parameter from TimeFormat (#2282)
      • Class Hierarchy for DateTimeFormat (split into DateFormat, TimeFormat, etc) (#2133)
      • Making time_granularity public (#1867)
      • Add fractional seconds support to components bag (#1873)
      • Use FixedDecimalFormat in DateTimeFormat (#1952)
      • Include module name to disambiguate Pattern (#1889)
      • Use month codes in formatting (#2071)
      • Split date and time data keys. (#2093)
      • Move Formatted[Zoned]DateTime over to preextracting the date time input info (#2138, #2205)
      • Remove MockZonedDateTime (#2231)
      • Add an offset_fallback field in TimeZoneFormatV1 (#2253)
      • Remove HourCycle from the public Lengths API (#2331)
      • Move mock datetime parsing code to test modules (#2436)
      • Stop returning error on mismatched locale and type calendar (#2477)
      • Change default length to medium (#2596)
      • Make expect_pattern GIGO (#2650)
    • decimal
      • Don't panic on invalid grouping sizes (#2042)
      • Remove signum and sign display options (#2070)
      • Add numbering system support (#2246)
    • list
      • ListStyle -> ListLength and add _with_length (#2628)
    • locid
      • Add remove() for vertical fallback (#1992)
      • Update Locale and LanguageIdentifier comparison functions to strict_cmp() and normalizing_eq() (#2020)
      • normalizing_eq(), strict_cmp() for LSRV subtags (#2048)
      • Add strict_cmp_iter() (#2111, #2114)
      • Removing auto-derived Ord impl for Locale/LangId (#2142)
      • Enable locale macro to support single unicode key value pair extension (#2382)
      • Reducing locid_id API surface (#2484)
      • private::Key and other::Key to ::Subtag (#2632)
    • locid_transform
      • Rename from icu::locale_canonicalizer (#2381)
      • LocaleCanonicalizer/LocaleExpander refactor (#2338)
    • normalizer
      • Promoted from experimental (#2058)
      • Add ComposingNormalizer for NFC, NFKC, and UTS 46 (#2039)
      • GIGO fix-ups for the normalizer and the collator (#1931)
      • Add support for NFKD and the decomposed counterpart of UTS 46 without ignored and disallowed (#1967)
      • Simplify Hangul composition (#2200)
      • Make sink-writing normalization methods non-experimental (#2201)
      • Uses tries instead of inversion lists for normalization data (#2235)
      • Consolidate the two auxiliary tries to the main NFD trie (#2371)
      • Use char instead of U24 in normalizer data (#2481)
      • Make NFKD and UTS 46 data store only the difference form NFD (#1984)
    • plurals
      • Rename select() to category_for() for PluralRules (#2287)
      • Use From instead of TryFrom for signed integers (#2593)
      • from_tr35_string -> get_for_cldr_string (#2633)
      • Make PluralOperands fields private, add static constructor (#2598)
    • properties
      • Better properties return values (#2112, #1990, #2277, #2555)
      • Move properties data over to an (extensible) enum (#2140)
      • Renaming unicode property data struct names (#2198)
    • timezone
      • New component, split from datetime (#2265)
      • Add time period metazone to TimeZonesProvider (#1961)
      • Convert metazone period from string to i32 (#2085)
      • Improvements to MetaZoneCalculator (#2274)
      • Add TimeVariant wrapper (#2289)
      • TimeVariant -> ZoneVariant with a few more docs (#2427)
      • Assorted TimeZone fixes (#2478)
  • Utils:
  • crlify: No updates
  • databake:
    • Moved over from crabbake (#2068)
    • Some databake improvements (#2150)
    • Using static LiteMaps in databake (#2264)
  • deduplicating_array: No updates
  • fixed_decimal:
    • Switch FixedDecimal to a trivaluate sign (#2025)
    • Remove negate (#2060)
    • Improve integer operations (#1924)
    • Add FixedDecimal::concatenate_right() (#1953)
    • Implement ceil(), floor() and truncate() functions (#1923)
    • Define "magnitude" and introduce "position" concept (#1981)
    • Support for rounding modes (#2000, #2100, #2104, #2261)
    • Make multiply_pow10)_ be infallible (#2285)
  • litemap:
    • Remove serde_json dep from zeromap/litemap and align features (#1939)
    • LiteMap of &'a [(K, V)] (#2242)
    • Enable ShortVec as a backend for LiteMap (#2356)
  • pattern: No updates
  • tinystr:
    • Make Option<TinyAsciiStr> be the same size as TinyAsciiStr (#2430)
  • tzif:
    • New crate (#2019)
    • Parse POSIX time-zone strings using Combine (#1973)
    • Parse TZif binary files using Combine (#1999)
  • writeable:
    • Rename write_len (#2529)
  • yoke:
    • Deprecate yoke's badly methods (#1930)
    • Rename Yoke::project() functions to ::map_project() (#1955)
    • Remove stable_deref_trait/alloc from yoke's default feature set (#2094)
    • Move map_project() to closures (#2185)
  • zerofrom: No updates
  • zerovec:
    • Make VarZeroVec format configurable (#2306)
    • Add FlexZeroVec (#1790)
    • Add NicheBytes trait and NichedOptionULE (#2501)
    • Turn ZeroVec into a struct for optimization (#2599, #2622)
    • Improve performance of VarZeroVec::deserialize and add provider benches (#2603)
    • Add array impl for ZeroMapKV (#1875)
    • Remove lifetime from ZeroVecLike (#1901)
    • ZeroVecLike cleanup (#2024)
    • Remove serde_json dep from zeromap/litemap and align features (#1939)
    • Make various ZeroVec methods const (#1976)
    • Refactor ZeroMap2d and add get_by functions (#1876)
    • Add more zerovec impls for usize and FlexZeroVec (#2023)
    • Change charULE from 4 bytes to 3 bytes (#2015)
    • More impls in zerovec crate (#2054)
    • Add binary search and other utilities to FlexZeroVec (#2284)
    • Remove KeyError and rename get() to get_2d() (#2279)
    • EncodeAsVarULE for Cow (#2376)
    • Add ExactSizeIterator for FlexZeroVec::iter_*() (#2580)
    • Add permutation to ZVL containers (#2605)
  • FFI:
    • All non-experimental components now covered by FFI
    • Add FFI error strategy (#2045)
    • Configurable DataProvider FFI (#2526)
  • Experimental:
    • bies:
    • casemapping:
    • segmenter:
      • Expose RuleBreakIterator as a public interface (#2408)
      • Merge segmenter_lstm with segmenter (#2087)
      • Use CodePointTrie in Segmenter (#1839)
      • Move language detection to language.rs (#1689)
      • Simplify function in rule_segmenter (#1880)
      • Use dictionary segmenter for word. (#1936)
      • Remove std dependency from segmenter_lstm. (#2064)
      • Add Lao and Khmer LSTM models (#2120)
      • Use multiple dictionaries for line/word segmenter. (#2209)
      • Add a feature option not to use unicode-segmentation (#2212)
      • Remove two char types in line segmenter and polish utf8 iterator naming (#2269)

icu4x 0.6.0 (May 9, 2022)

  • General data model
    • Non-exhaustive errors for locid, calendar, decimal, plurals (#1792, #1793)
    • Rename "serialize" feature to "serde" (#1797)
    • Turn all errors into Copy types (#1657)
  • Components
    • calendar:
      • Coptic, Indian and Ethiopian calendars (#1660, #1715, #1779)
      • Calendar arithmetic (#1614)
    • datetime:
      • Formatting for fractional seconds (#1813, #1801)
      • Support for day of week in month ('F') (#1770)
      • Custom fallbacking for TimeZoneFormatter (#1591)
      • Support for week-of-month (#1468)
      • Bug fix to get_best_available_format_pattern skeleton matching logic (#1549)
    • decimal: No updates
    • locale_canonicalizer:
      • ZeroCopy support (#1760, #1777)
    • locid:
      • Simplified language representation (#1695)
      • Region, Script and Variant subtags ULE (#1696)
    • plurals:
      • Update data model to use ZeroVec (#1240)
    • properties:
      • Bidi support (#1716, #1784)
  • Utilities
    • codepointtrie:
      • Use 0 for error value for Rust out-of-bounds for primitive trie value types (#1804)
    • crlify: New util for line ending conversions
    • deduplicating_array: No updates
    • fixed_decimal:
      • Improvements to FixedDecimal f64 APIs (#1718)
    • litemap:
      • Pluggable LiteMap backends (#1769)
    • pattern: No updates
    • uniset: No updates
    • writeable: No updates
    • yoke: No updates
    • zerofrom: No updates
    • zerovec:
      • ZeroVec derive improvements (#1780)
      • Support non-Ord values in ZeroMap (#1743)
      • Add OptionULE and OptionVarULE (#1736)
      • Rename ZeroVec::from_slice and add new method for const-constructed ZeroSlice (#1728)
      • Treat ZeroMap sort order as an optional invariant (#1727)
      • Add ZeroMap::get_copied_by (#1722)
      • Generalize PairULE to support longer tuples (#1721)
      • Add more AsULE impls for primitives (#1672)
      • Add cast methods to ZeroVec and ZeroSlice (#1651)
      • Add RawBytesULE::slice_from_byte_slice (#1648)
      • Create façades for ZeroVec types, hide internal code organization modules (#1629)
      • Add zerovec::skip_kv and zerovec::skip_ord attributes, as well as generalized attribute handling framework (#1613)
      • Rename as_unaligned to to_unaligned (#1619)
  • FFI:
    • Updating to Diplomat 0.3
    • Making testdata an optional FFI dep (#1820)
    • Split out capi targets: make separate freertos, staticlib, and cdylib crates as targets (#1747)
  • Experimental:
    • crabbake: Initial version of baked data provider (#1825)
    • segmenter:
      • Support production-ready data provider for segmenters (#1652)
      • Implement dictionary based segmenter for line segmenter. (#1644)
      • Wire DataProvider into UAX29 segmenters (#1627)
      • Move UAX#14 defines to line.toml (#1568)
      • Add segmenter factories to generate UAX29 iterators (#1602)

icu4x 0.5.0 (Jan 31, 2022)

  • General data model
    • DataPayload no longer needs a lifetime (#1297, #1279)
    • Re-write DataKey (#1511)
    • Rewrite ErasedDataProvider as AnyProvider (#1495)
    • Add EitherProvider and rename IterableDataProviderCore to IterableProvider (#1455)
    • Change DataRequest to be borrowed in BufferProvider (#1416)
    • Replace SerdeDeDataProvider with BufferProvider (#1369, #1384)
  • Components
    • calendar:
      • Julian, Japanese, and Buddhist calendars (#1351, #1394, #1305)
      • DateTimeFormat integration (#1339)
      • Bugfix around arithmetic (#1352)
    • datetime:
      • Week-of-year support (#1206)
      • DateTimeFormat::resolve_components() (#1362)
      • Era formatting (#1346)
      • TimeZoneFormatterConfig (#1256)
      • New data model for organizing calendar data (#1300)
      • Bugfix around missing localized strings in time zone data (#1405)
    • decimal: No updates
    • locale_canonicalizer:
      • Bugfix in maximization (#1171)
      • Update data model to use LiteMap (#1275)
    • locid: No updates
    • plurals:
      • Update data model to use ZeroVec (#1240)
    • properties:
      • Rename resource key category for properties (#1406)
      • Rename enums for General_Category (#1355)
      • Implement the Canonical_Combining_Class property (#1347)
      • Implement Script_Extensions property (#1353)
      • Add General_Category predicate functions (#1310)
      • Implement Grapheme_Cluster_Break, Word_Break, and Sentence_Break Unicode properties (#1233)
  • Utilities
    • codepointtrie: No changes
    • deduplicating_array: New utility for efficient serialized representation of data with duplicates
    • fixed_decimal:
      • Padding and truncation APIs (#1482, #1507, #1195)
      • Add double-to-decimal via ryū (#1217)
      • Handle exponents in FixedDecimal::from_str() (#1265)
    • litemap:
      • Add LiteMap::get_indexed() and LiteMap::find_index()
      • Handle serialization of tuples (etc) in litemaps (#1306)
    • pattern: No updates
    • uniset: No updates
    • writeable:
      • Adding parts functionality to Writeable (#1438)
      • Change Writeable::writeable_to_string to return a Cow (#1452)
      • Implementing Writeable for all integers (#1408)
      • Making writeable::LengthHint a range (#1400)
      • Simplifying assert_writeable_parts_eq and assert_writeable_eq (#1522, #1399)
    • yoke:
      • Remove Yokeable::Output from ZeroCopyFrom trait (#1499)
      • Add EitherCart (#1484)
      • Remove attach_to_option_cart() (#1348)
      • Homogenize yoke generic impls to always work with Yokeable, add OwnedYokeable (#1302)
    • zerovec:
      • Move over to a model where the vector types deref to ZeroSlice and VarZeroSlice (#1418, #1371)
      • Simplify ZeroVec/VarZeroVec error handling, consolidate ULEError type (#1389)
      • Simplify ZeroMapKV (#1334)
      • Add ZeroMap2d, a two-dimensional zero-copy map (#1432)
      • Add borrowed-only version of ZeroMap (#1238)
      • Add various helper functions to zerovec (#1430)
      • Rename PlainOldULE to RawBytesULE (#1413)
      • Improve EncodeAsVarULE (#1385)
      • Add EncodeAsVarULE for ZeroVec (#1274, #1407)
      • Various trait impls (#1332, #1330, #1328, #1287)
      • Document ULE alignment guarantee; update all impls with checklists (#1294)
      • Fix PairULE validation function (#1266)
  • FFI:
    • Updating to the latest Diplomat
    • Add FFI for constructing Data Structs, including decimal data structs (#1497)
    • Add padding/truncation to FFI (#1501)
    • Add FFI for constructing fixed decimals from float (#1483)
    • Properties FFI (#1269)
  • Experimental:
    • New ListFormatter experiment
    • More progress on segmentation experiment

icu4x 0.4.0 (November 1, 2021)

  • Updated to CLDR 40 (#1216)
  • Functional Unicode property APIs and data; moved to new crate icu_properties (#148)
  • DateTimeFormat optimization: memory usage cut by two-thirds and perf improved by 40% (#519)
  • BlobDataProvider allowing for dynamic, asynchronous data loading (#1084)
  • Major upgrades to the zerovec utility crate and new benchmarks for ZeroMap (#1082, #1087)
  • Initial support for time zones in DateTimeFormat components bag (#845)
  • Bug fixes in LocaleCanicalizer (#1189, etc.)
  • Week of month/year arithmetic (#918)
  • Major improvements on code size across FFI (#962)
  • Iterations on ICU4X Segmenter (#1045, #1165, etc.)
  • Experimental ListFormatter (#1053)
  • ICU4X now requires Rust 1.56 (#1201)

icu4x 0.3.0 (July 29, 2021)

  • Static data provider without filesystem dependency (#78)
  • Infrastructure around zero-copy deserialization, including ZeroVec and Yoke (#652, #667)
  • Most ICU4X components support no_std (#812)
  • Hour cycle preferences are used by DateTimeFormat (#671)
  • Skeleton matching supports additional field widths (#584)
  • Add canonicalize method to LocaleCanonicalizer (#747)
  • Added range iterator on UnicodeSet (#836)
  • Add PluralRules::categories() function (#789)
  • Consolidated data generation tool into new binary icu4x-datagen

icu4x 0.2.0 (April 29, 2021)

  • Updated CLDR to 39 (#640)
  • Initial release of:
    • icu_decimal (#590)
    • icu_locale_canonicalizer (#417)
  • DateTimeFormat gets support for
    • day periods (#435)
    • time zones (#418)
    • components bag (#481)
  • UnicodeSet gets preliminary support for L3a subset (#478)
  • PluralRules support E operand (#407)
  • New utilities:
    • Writeable
    • ZeroVec
    • LiteMap
    • FixedDecimal
    • Pattern
  • Early prototype of C API - icu_capi

icu4x 0.1.0 (October 15, 2020)

  • Initial release of ICU4X.
  • Initial release of:
    • icu
    • icu_locid
    • icu_plurals
    • icu_datetime
    • icu_uniset
    • icu_provider
    • icu_provider_fs
    • icu_provider_cldr
    • icu_testdata
    • icu4x_ecma402
    • fixed_decimal