Log message:
Update to 56.1
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Most of the old Normalizer/unorm.h had been replaced by (and reimplemented \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COLON has been withdrawn as a date pattern character corresponding to the \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
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Log message:
Changes 55.1:
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 à 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.
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