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Changelog:
Release Overview
The features for this release include support of CLDR 28 and Unicode 8.0.
For more details, including migration issues, see below.
Common Changes
CLDR 28: For details of the many changes in CLDR, see CLDR 28.
Unicode data updated to Unicode 8.0: 41 new emoji characters, 5,771 new ideographs for Chinese/Japanese/Korean, 6 new scripts, improved character properties data, etc.
ICU data size reduced by about 7.2% (1.8MB) via sharing string values across resource bundles. [#11537]
DateIntervalFormat now handles intervals with seconds, and sets FieldPosition more consistently. [#11706, #11726]
DateFormat::createInstanceForSkeleton() caches DateFormat patterns rather than DateTimePatternGenerator instances, for better performance (for cache hits) and lower heap memory consumption. [#11780]
StringSearch (based on collation) defaults to matches on normalization boundaries rather than grapheme cluster boundaries, which yields more matches on Indic text. [#11750]
RuleBasedNumberFormat (spelled-out numbers) now handles rounding (Java only), infinity, NaN. [#11653, #11760, #8223]
Most of the old Normalizer/unorm.h had been replaced by (and reimplemented via) Normalizer2, and is now deprecated. [#7303]
COLON has been withdrawn as a date pattern character corresponding to the date field [UDAT_]TIME_SEPARATOR_FIELD; there is currently no pattern character corresponding to that field. [#11773]
Support for locale key "cf" to specify currency format style, and interaction with NumberFormat values for UNumberFormatStyle: [#11787]
For NumberFormat style UNUM_CURRENCY / CURRENCYSTYLE, the default is "standard" currency style (typically using minus sign for negative numbers), but the new locale key "cf" may be used with values "standard" or "account" to specify currency format style ("account" indicates accounting style, often using parentheses for negative numbers).
For other NumberFormat styles, the locale key "cf" is ignored (they override the locale preference):
UNUM_CURRENCY_ISO / ISOCURRENCYSTYLE
UNUM_CURRENCY_PLURAL / PLURALCURRENCYSTYLE
UNUM_CURRENCY_ACCOUNTING / ACCOUNTINGCURRENCYSTYLE
UNUM_CASH_CURRENCY / CASHCURRENCYSTYLE
A new NumberFormat style is availble to explicitly specify standard style, ignoring the the locale key "cf"
UNUM_CURRENCY_STANDARD / STANDARDCURRENCYSTYLE
ICU4C Specific Changes
C API support for CompactDecimalFormat via UNumberFormatStyle additions: UNUM_DECIMAL_COMPACT_SHORT, UNUM_DECIMAL_COMPACT_LONG [#11693]
Larger UnicodeString object stores more characters inside the object without heap allocation; the UnicodeString object size is now build-time-configurable. [#11551]
On 64-bit machines, increase from object size 40 bytes with 15 internal UChars to a new default of 64 bytes with 27 UChars.
Some C++ classes now have swap() and moveFrom() methods, and support C++11 move semantics on compilers that support them. [#10086]
UnicodeString, LocalPointer, LocalArray
DecimalFormat code refactored to fix bugs, improve maintainability, and improve performance. [#10458]
New FilteredBreakIterator suppresses certain segment boundaries. For example, it can suppress the sentence boundary in the middle of "Mr. Smith". [#11248]
The internal, shared cache has been changed from unbounded to bounded. [#11767]
For [U]BreakIterator with type UBRK_SENTENCE, the locale key "ss" can now be used with value "standard" to specify that standard sentence break suppression data should be used, or with value "none" to indicate that no break suppression data should be used (the default). [#11770]
Collator: first-time startup time improved 20% due to precalculated unsafe-backward table [#11886]
A number of memory leaks and buffer overruns have been fixed based on static code analysis, mostly in data build tools
The features for this release include support of CLDR 27 (with a major cleanup of region locales, among many other improvements), formatting for scientific notation ("1.2 × 10³"), an update to Unicode 7.0 data for spoof-checking, narrow AM/PM markers ("7:45p"), and various performance enhancements. For C/C++, there are new methods for flexible dates ("Nov 10", or "Sept 2015"), named capture groups for regular expressions, formatting of compound units ("3.5 meters per second"), new C wrappers, and independent timezone resource loading. ICU4J has been improved and tested for using ICU4C data and for running on Android.
Data from the CLDR 25 release: Many bug fixes
Time zone data: 2014b, including post CLDR 25 time zone data update to CLDR.
U+20BD Ruble Sign added (from Unicode 7.0, otherwise ICU 53 still uses Unicode 6.3)
MeasureFormat API for new units in CLDR 24
Hoisted setContext/getContext from SimpleDateFormat to DateFormat, implement context-sensitive capitalization of relative dates
Added setContext/getContext methods to NumberFormat (and unum_setContext/unum_getContext for UNumberFormat), implement context-sensitive number formatting (for RBNF spellout)
Improved lenient date parsing consistency between ICU4C and ICU4J, add finer-grained control of date parsing leniency
Fixed numeric rounding in TimeUnitFormat
Fixes to Unicode 6.3 bidirectional algorithm implementations to behave exactly like reference implementations
Improved UTF-16 charset detection
Collation code re-implemented
Many bugs fixed, some enhancements implemented (link for ticket query)
Passes full UCA conformance tests now
Updated to UCA 6.3/CLDR 24 root collation
Performance: C++ UTF-8 and Java string comparisons significantly faster (very small reduction for C++ UTF-16)
Collation data size (uncompressed) reduced from 4.48MB (ICU 52) to 2.62MB
New data format, removed empty files, fixed genrb bug
More APIs function when collation rule strings have been omitted from the data files (e.g., getTailoredSet())
Java Collator.compare(Object, Object) now works with CharSequence, not just String
Java Collator base class (does not apply to RuleBasedCollator instances): getters for strength, decomposition mode, and locales return hardcoded default values; their setters do nothing
Rule syntax and semantics tightened and improved, matching LDML 25 Collation Rule Syntax
In particular, rule chains now must start with a reset.
Setting of variableTop deprecated, and not supported in rule syntax any more
Replaced by the new maxVariable setting; see LDML 25 Collation Settings
Accounting format supported in NumberFormat
RelativeDateTimeFormatter class for formatting relative times such as "3 weeks ago" or "next Tuesday."
Updated Spoof Checker for Unicode Security Standard version 6.3.
Unicode 6.3: New bidi control codes, new Bidi_Class property values, two new bidi "bracket" properties; for other property value changes see the UAX 44 summary.
The bidi algorithm implementation has also been updated to support the new properties and to match the updated algorithm in the Unicode 6.3 version of UAX 9.
Note: ICU 52 still uses collation root data based on Unicode Collation Algorithm 6.2 (UCA 6.2). (However, ICU 52 does use CLDR 24 collation tailoring data.)
CLDR 24: Improved coverage for top 70+ languages, fractional plural rules and forms, many new measurement units, major simplification of collation rule syntax, preliminary version of European Ordering Rules, new relative fields such as “last Sunday” and “now”, and much more.
Time zone data: 2013g.
Support new variants of Islamic calendar:
"islamic-umalqura": Umm al-Qura.
"islamic-tbla": Tabular (fixed intercalary years), with astronomical epoch.
Made Calendar getDayOfWeekType behave as documented.
New API for converting between Windows time zone ID and IANA tz database ID.
Technology Preview: New API for more granular control of DateFormat parse leniency.
DateTimePatternGenerator:
Support recently-added time zone pattern characters O, X, x and updated support for V, Z.
Support newly-defined skeleton character ‘J’ to generate preferred hour cycle without any day period indicator (such as AM/PM for h).
Implement support for plurals that depend on displayed fractional values.
MessageFormat and currency formatting etc. select appropriate plural forms for values with decimal digits (after the decimal point).
Segmentation:
Add dictionary-based word & line break for Lao.
As "DSO_LIBDIR" is now always set (and must be always set because of all
the changes that refer to it) we cannot use it to check for the Cygwin
case anymore. Instead check whether "OPSYS" is (not) equal to "Cygwin".
Bug fixes:
* fix for enumset.h not being installed on Windows
* zOS pkgdata fix
* Test fixes
* Region enumeration fix
* make stable sort faster
* host failures for DateFormatTest
* LayoutEngine security patches (see above)
* ubrk fix for word_POSIX infinite loop
* fix memory leak/crash in LayoutEngine
* fix header guard typo in layout/TibetanReordering.h
Common Changes
==============
CLDR 23: Collation tailorings put native script first; non-Gregorian calendar formats are more consistent; much improved data for Armenian (hy), Georgian (ka), Mongolian (mn), and Welsh (cy); …
Time zone data: 2013b
Date format/parse now supports CLDR short weekday names ("EEEEEE", "cccccc").
Support DisplayContext for date formatting, locale display names.
DateTimePatternGenerator behavior is now much more consistent between C and J.
Support new timezone pattern characters in LDML spec: X+, x+, O, OOOO, V, VV, VVV.
Updated SpoofChecker for v5 of UTS39.
AlphabeticIndex enhancements:
New thread-safe ImmutableIndex sub-API
Build an index for a custom Collator.
Make data-driven for Chinese collations.
New API for CLDR script metadata.
ICU4C Specific Changes
======================
Support for “dangi” Korean luni-solar calendar (already in ICU4J).
Add CompactDecimalFormat (already in ICU4J).
Add TerritoryContainment APIs (already in ICU4J).
UnicodeString default constructor and destructor now inline.
Layout engine now supports 'morx' tables.
Fixed some ICU 50 regressions:
Affixes set with e.g. DecimalFormat::setPositivePrefix were ignored for parse.
UNUM_PARSE_INT_ONLY no longer handled grouping separator.
Add ucal_getTimeZoneID.
The C++ AlphabeticIndex implementation is now on par with Java, including full support for all Chinese collation tailorings.
U8_NEXT() and similar low-level macros now support NUL-terminated UTF-8 strings.
New macros like U8_NEXT_OR_FFFD() return U+FFFD for an ill-formed sequence.
Conversion: New "good one-way" mapping type, for example for Variation Selector sequences.
Also bump PKGREVISION for a few packages using it.
The packages I did this for:
net/yaz
lang/parrot
misc/openoffice3 (where I noticed the run-time failure due to missing shared library)
www/webkit-gtk
sysutils/open-vm-tools
inputmethod/ibus-qt
I didn't do this recursively or for all packages using icu
since I didn't know if they used the shared library directly,
some use was optional. The list of packages I didn't touch:
devel/devhelp
databases/idzebra
databases/sqlite3
devel/gnustep-base/
finance/gnucash
games/openttd
graphics/shotwell
lang/mono
meta-pkgs/boost
misc/calibre
misc/libreoffice
news/tin
textproc/php-intl
www/deforaos-surfer
www/epiphany
www/liferea-current
www/midori
* 9306 Layout Engine changes for harfbuzz integration
* 9677 Affixes set with e.g. DecimalFormat::setPositivePrefix now ignored for parse
* 9714 OS/400 test failures
* 9728 Fail building icu4c with mingw-w64
* 9737 Locale::GetDefault() in locid.cpp is not thread-safe
* 9771 Updated Currency from/to data (CLDR 5470)
* 9748 Visual Studio 2010/2012 issues
* 9780 UNUM_PARSE_INT_ONLY no longer handles grouping sep
* 9783 New Turkish Lira symbol
* 9789 Date format parsing problem with new CLDR data
* 9793 Currency data integration issue with CLDR 5470 changes
* 9801 UCONFIG_NO_CONVERSION test failure
* 9802 No data test failure
* Unicode 6.2: Turkish Lira Sign, improved word & line segmentation (BreakIterator) for symbols
* CLDR 22.1: Data coverage & quality improved across all major languages; new short width type for weekday names; new zhuyin (Bopomofo) collation for Chinese; improved data for CompactDecimalFormat & RBNF
* Time zone data: 2012h
* Ordinal-number support in MessageFormat & PluralRules
* Deprecate setLocale(locale) in PluralFormat
* Dictionary-based break iterators (word segmentation):
* Support Chinese & Japanese, use more compact dictionary format, port all but Khmer support to Java
* Update Khmer dictionary
* Change Java util.ListFormat to text.ListFormatter and other updates, use CLDR data, port to C++
* Add updated IBM-eucJP and IBM-5233 converter
* Improve number formatting performance
* C++ GenderInfo: Effective combined gender of a list of people's genders (ported from Java)
* Thread safety support cannot be removed (see the Readme)
* Default compilers: Clang is now used if available (see the Readme)
* C++ Collator API cleanup, subclassing-API-breaking changes (see the Readme)
* Add option to genrb tool for writing java resource bundle files
* Time zone format APIs
* 9242 ICU4C fails to parse pattern containing EEE properly whilst ICU4J parses it successfully
* 9258 Number format performance
* 9283 uregex_open fails for look-behind assertion + case-insensitive
* 9284 Date format roundtrip test failure
* 9295 HPPA endianness detection
* 9313 Problem building ICU4C with Cygwin/MSVC
* 9332 Linux s390 endianness detection
* 9336 Problem building ICU4C 49.1.1 on zOS
