* Copyright (C) 2016 and later: Unicode, Inc. and others.
* License & terms of use: http://www.unicode.org/copyright.html
* Copyright (C) 2004-2016, International Business Machines
* Corporation and others.  All Rights Reserved.
*
*   file name:  changes.txt
*   encoding:   US-ASCII
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2004may06
*   created by: Markus W. Scherer

* change log for Unicode updates

For an overview, see https://unicode-org.github.io/icu/processes/unicode-update

Notes:

This log includes several command lines as used in the update process.
Some of them include a console prompt with the present working directory (pwd) followed by a $ sign.
Use a console window that is set to that directory, or cd to there,
and then paste the command that follows the $ sign.

Most command lines use environment variables to make them more portable across versions
and machine configurations. When you set up a console window, copy & paste the `export` commands
from near the top of the current section before pasting tool command lines.
Adjust the environment variables to the current version and your machine setup.
(The command lines are currently as used on Linux.)

Syntax of this file:

`***` - section heading
`*` - sub heading
`-` - 1st level bullet
`+` - 2nd level bullet
`=` - 1st level bullet
`->` - "the previous things leads to...", OR a 2nd level bullet/item

---------------------------------------------------------------------------- ***

* New ISO 15924 script codes

Normally, add new script codes as part of a Unicode update.
See https://unicode-org.github.io/icu/processes/release/tasks/standards#update-script-code-enums
and see the change logs below.

---------------------------------------------------------------------------- ***

TODO: Run gencolusb for Unicode updates.
- https://github.com/markusicu/icu/blob/main/icu4c/source/tools/gencolusb/README.md
- until ICU-12062 is done

---------------------------------------------------------------------------- ***

Unicode 17.0 update for ICU 78

https://www.unicode.org/versions/Unicode17.0.0/
https://www.unicode.org/versions/beta-17.0.0.html
https://www.unicode.org/Public/draft/
https://www.unicode.org/reports/uax-proposed-updates.html
https://www.unicode.org/reports/tr44/tr44-35.html

https://unicode-org.atlassian.net/browse/ICU-23038 Unicode 17
https://unicode-org.atlassian.net/browse/CLDR-18283 BRS Unicode 17

* Command-line environment setup

Markus:

export UNIDATA_ROOT=~/unidata
export UNICODE_DATA=$UNIDATA_ROOT/uni17/final
export CLDR_SRC=~/cldr/uni/src
export ICU_ROOT=~/icu/uni
export ICU_SRC=$ICU_ROOT/src
export ICU_OUT=$ICU_ROOT/dbg
export ICUDT=icudt78b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_OUT/icu4c/lib
export UNICODE_TOOLS=~/unitools/mine/src

Elango:

export UNIDATA_ROOT=~/oss/unidata
export UNICODE_DATA=$UNIDATA_ROOT/uni17/final
export CLDR_SRC=~/oss/cldr/mine/src
export ICU_ROOT=~/oss/icu
export ICU_SRC=$ICU_ROOT
export ICU_OUT=$ICU_ROOT
export ICUDT=icudt78b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_OUT/icu4c/lib
export UNICODE_TOOLS=~/oss/unicodetools/mine/src

*** Unicode version numbers
- icu4c/source/data/makedata.mak
- icu4c/source/common/unicode/uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

*** Configure: Build Unicode data for ICU4J
- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
    so that the makefiles see the new version number.
- FYI: The option that adds the additional Unicode data files for ICU4J is
    ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data
- Markus's version:
  cd $ICU_OUT/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data CXXFLAGS="-DU_USING_ICU_NAMESPACE=0 -Wimplicit-fallthrough" CPPFLAGS="-DU_NO_DEFAULT_INCLUDE_UTF_HEADERS=1 -fsanitize=bounds" LDFLAGS=-fsanitize=bounds ../../src/icu4c/source/runConfigureICU --enable-debug --disable-release Linux/clang --prefix=/usr/local/google/home/mscherer/icu/mine/inst/icu4c > config.out 2>&1 ; tail config.out
- Elango's version (diff default C++ compiler & in-source build paths):
  cd $ICU_OUT/icu4c/source
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data CXXFLAGS="-DU_USING_ICU_NAMESPACE=0 -Wimplicit-fallthrough" CPPFLAGS="-DU_NO_DEFAULT_INCLUDE_UTF_HEADERS=1 -fsanitize=bounds" LDFLAGS=-fsanitize=bounds ./runConfigureICU --enable-debug --disable-release Linux/gcc --prefix=/usr/local/google/home/elango/oss/icu/icu4c > config.out 2>&1 ; tail config.out

*** data files & enums & parser code

* download files
- same as for the early Unicode Tools setup and data refresh:
  https://github.com/unicode-org/unicodetools/blob/main/docs/index.md
  https://github.com/unicode-org/unicodetools/blob/main/docs/inputdata.md
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + use an FTP client; anonymous FTP from www.unicode.org at /Public/draft
  + subfolders: emoji, idna, security, ucd, uca
  + for pre-release (alpha, beta) data files:
    ~ if one of us produces the alpha.zip or beta.zip collection of data files for publication,
      then we can use its contents directly (no FTP from unicode.org necessary)
    ~ otherwise download from https://www.unicode.org/Public/draft/
    ~ you can omit or discard the charts/ and ucdxml/ files/folders
    ~ you can omit or discard ucd/UCD.zip & ucd/Unihan.zip & security/*.zip
  + alternate way of fetching files, if available:
    copy the files from a Unicode Tools workspace that is up to date with
    https://github.com/unicode-org/unicodetools
    and which might at this point be *ahead* of "Public"
    ~ before the Unicode release copy files from "dev" subfolders, for example
      https://github.com/unicode-org/unicodetools/tree/main/unicodetools/data/ucd/dev
  + for final-release data files, the source of truth is the files in
    https://www.unicode.org/Public/(version)

* process and/or copy files
- cd $ICU_SRC/tools/unicode
    py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
      py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile
    e.g.
      py/preparseucd.py $UNICODE_DATA --only_ppucd /tmp/ppucd.txt

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values: [('blk', {'Tangut_Components_Sup', 'Misc_Symbols_Sup', 'CJK_Ext_J', 'Tai_Yo', 'Chisoi', 'Sharada_Sup', 'Beria_Erfe', 'Tolong_Siki', 'Sidetic'}), ('jg', {'Thin_Noon'}), ('lb', {'HH'}), ('sc', {'Chis', 'Sidt', 'Tols', 'Berf', 'Tayo'})]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    (cd $UNIDATA_ROOT && diff -u uni16/final/UCD/ucd/PropertyValueAliases.txt uni17/beta/ucd/PropertyValueAliases.txt | egrep '^[-+][a-zA-Z]')
    +age; 17.0                             ; V17_0
    +blk; Beria_Erfe                       ; Beria_Erfe
    +blk; Chisoi                           ; Chisoi
    +blk; CJK_Ext_J                        ; CJK_Unified_Ideographs_Extension_J
    +blk; Misc_Symbols_Sup                 ; Miscellaneous_Symbols_Supplement
    +blk; Sharada_Sup                      ; Sharada_Supplement
    +blk; Sidetic                          ; Sidetic
    +blk; Tai_Yo                           ; Tai_Yo
    +blk; Tangut_Components_Sup            ; Tangut_Components_Supplement
    +blk; Tolong_Siki                      ; Tolong_Siki
    +jg ; Thin_Noon                        ; Thin_Noon
    +lb ; HH                               ; Unambiguous_Hyphen
    +sc ; Berf                             ; Beria_Erfe
    +sc ; Chis                             ; Chisoi
    +sc ; Sidt                             ; Sidetic
    +sc ; Tayo                             ; Tai_Yo
    +sc ; Tols                             ; Tolong_Siki
  + copy new API constants from the preparseucd.py output into the .h/.java files,
    add/adjust comments, wrap lines, and set numeric values
  + (ignore Age: no API constants for that)
  + Block:
      uchar.h before UBLOCK_COUNT,
      UCharacter.UnicodeBlock IDs before COUNT,
      UCharacter.UnicodeBlock objects before INVALID_CODE
  + Script: uscript.h & com.ibm.icu.lang.UScript
  + for new scripts: fix expectedLong names
      in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
  + Indic_Syllabic_Category: uchar.h & UCharacter.IndicSyllabicCategory
  + Note: preparseucd.py does not write constants for values of every property.
    Add some manually, or write more generator code.
  + after adding new API constants, run preparseucd.py again

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* build ICU
  to make sure that there are no syntax errors

  $ICU_OUT/icu4c$ echo;echo; date; make -j20 tests &> out.txt ; tail -n 30 out.txt ; date

* Bazel build process

See https://unicode-org.github.io/icu/processes/unicode-update#bazel-build-process
for an overview and for setup instructions.

Consider running `bazelisk --version` outside of the $ICU_SRC folder
to find out the latest `bazel` version, and
copying that version number into the $ICU_SRC/.bazeliskrc config file.
(Revert if you find incompatibilities, or, better, update our build & config files.)

* TODO:
  Error when upgrading from Bazel 7.2.1 to Bazel 8.2.1:
    ERROR: Skipping '//icu4c/source/tools/gennorm2': error loading package 'icu4c/source/tools/gennorm2': Unable to find package for @@[unknown repo 'rules_cc' requested from @@]//cc:defs.bzl: The repository '@@[unknown repo 'rules_cc' requested from @@]' could not be resolved: No repository visible as '@rules_cc' from main repository. Was the repository introduced in WORKSPACE? The WORKSPACE file is disabled by default in Bazel 8 (late 2024) and will be removed in Bazel 9 (late 2025), please migrate to Bzlmod. See https://bazel.build/external/migration.
  Need to revisit!

* generate data files

- remember to define the environment variables
  (see the start of the section for this Unicode version)
- cd $ICU_SRC
- optional but not necessary:
    bazelisk clean
      or even
    bazelisk clean --expunge
- build/bootstrap/generate new files:
    icu4c/source/data/unidata/generate.sh

* NOTE: propsVectorsTrie_index in uprops.icu / uchar_props_data.h
  (and a bit of propsVectors)
  increased by some 22kB, probably mostly due to the revised Identifier_Type data,
  especially for Unified_Ideograph characters.

* run & fix ICU4C tests
- Note: Some of the collation data and test data will be updated below,
  so at this time we might get some collation test failures.
  Ignore these for now.
- Some properties are hardcoded in the ICU libraries because they apply to
  few characters or ranges, and are not expected to change often.
  They are tested at least in C++ intltest (e.g., against ppucd.txt).
  If these tests fail, then update the implementation and the tests.
- Robin or Andy helps with RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools,
  and a tool-tailored version goes into CLDR, see
    https://github.com/unicode-org/unicodetools/blob/main/docs/uca/index.md

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt; adjust boundaries as needed, e.g., for new currency symbols
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/collate/src/test/resources/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- update CollationFCD.java:
  copy & paste the initializers of lcccIndex[] etc.
  from
    $ICU_SRC/icu4c/source/i18n/collationfcd.cpp
  to
    $ICU_SRC/icu4j/main/collate/src/main/java/com/ibm/icu/impl/coll/CollationFCD.java
- generate data files, as above (generate.sh), now to pick up new collation data
- rebuild ICU4C (make clean, make check, as usual)

* Unihan collators
    https://github.com/unicode-org/unicodetools/blob/main/docs/unihan.md
- run Unicode Tools GenerateUnihanCollators & GenerateUnihanCollatorFiles,
  check CLDR diffs, copy to CLDR, test CLDR, ... as documented there
- generate ICU zh collation data
    Follow the tools/cldr/cldr-to-icu/README.md file.
  + setup:
    export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
        (didn't work without setting JAVA_HOME,
         nor with the Google default of /usr/local/buildtools/java/jdk
         [Google security limitations in the XML parser])
    export PATH=$JAVA_HOME/bin:$PATH
    export TOOLS_ROOT=$ICU_SRC/tools
    export ICU_DIR=$ICU_SRC
    export CLDR_DIR=$CLDR_SRC
    export CLDR_DATA_DIR=$CLDR_DIR
        (pointing to the "raw" data, not cldr-staging/.../production should be ok for the relevant files)
  + build & run Java code
    Follow the instructions in the TLDR section of the cldr-to-icu/README.md file.
    In TLDR "Run the conversion tool" add parameters to generate only the files we need:
      java -jar target/cldr-to-icu-1.0-SNAPSHOT-jar-with-dependencies.jar --outDir=/tmp/icu --outputTypes=coll,transforms --localeIdFilter='zh.*' --dontGenCode
  + diff
    cd $ICU_SRC
    meld icu4c/source/data/coll/zh.txt /tmp/icu/coll/zh.txt
    meld icu4c/source/data/translit/Hani_Latn.txt /tmp/icu/translit/Hani_Latn.txt
  + copy into the source tree
    cd $ICU_SRC
    cp /tmp/icu/coll/zh.txt icu4c/source/data/coll/zh.txt
    cp /tmp/icu/translit/Hani_Latn.txt icu4c/source/data/translit/Hani_Latn.txt
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_OUT/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    NOTE: If you get the error "No rule to make target 'out/build/icudt70l/uprops.icu'",
    you need to reconfigure with unicore data; see the "configure" line above.
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudata
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudata
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt78l.dat ./out/icu4j/icudt78b.dat -s ./out/build/icudt78l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudata
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudata/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudata/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudata/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudata/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudata"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudata/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudata/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the binary data files into the ICU4J tree
    cd $ICU_OUT/icu4c/data/out/icu4j
    cp -v com/ibm/icu/impl/data/icudata/coll/* $ICU_SRC/icu4j/main/collate/src/main/resources/com/ibm/icu/impl/data/icudata/coll
    cp -v com/ibm/icu/impl/data/icudata/brkitr/* $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata/brkitr
    cp -v com/ibm/icu/impl/data/icudata/confusables.cfu $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata
    cp -v com/ibm/icu/impl/data/icudata/*.nrm $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata
    cd com/ibm/icu/impl/data/icudata/
    ls *.icu | egrep -v "cnvalias.icu" | awk '{print "cp " $0 " $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata";}' | sh
- The procedure above is very conservative:
  It refreshes only the parts of the ICU4J data that we think are affected by a Unicode data update.
  It avoids dealing with any other discrepancies
  between the source and generated data files.
  *If* instead we wanted to refresh *all* of the ICU4J data from ICU4C:
      $ICU_OUT/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example:
    ~/unitools/mine/src$ diff -u unicodetools/data/ucd/16.0.0/extracted/DerivedGeneralCategory.txt unicodetools/data/ucd/dev/extracted/DerivedGeneralCategory.txt | grep '; Nd' | egrep '^\+'
    -->
      +11DE0..11DE9  ; Nd #  [10] TOLONG SIKI DIGIT ZERO..TOLONG SIKI DIGIT NINE
      +16DA0..16DA9  ; Nd #  [10] CHISOI DIGIT ZERO..CHISOI DIGIT NINE
  --> https://github.com/unicode-org/cldr/pull/4726
      (FYI: Chisoi was later removed from Unicode 17)

*** merge the Unicode update branch back onto the main branch
- make sure that changes to Unicode tools are checked in:
  https://github.com/unicode-org/unicodetools

---------------------------------------------------------------------------- ***

Unicode 16.0 update for ICU 76

https://www.unicode.org/versions/Unicode16.0.0/
https://www.unicode.org/versions/beta-16.0.0.html
https://www.unicode.org/Public/draft/
https://www.unicode.org/reports/uax-proposed-updates.html
https://www.unicode.org/reports/tr44/tr44-33.html

https://unicode-org.atlassian.net/browse/ICU-22707 Unicode 16
https://unicode-org.atlassian.net/browse/CLDR-17226 BRS Unicode 16

https://github.com/unicode-org/unicodetools/pull/774 delete the RecommendedSetGenerator

https://github.com/unicode-org/unicodetools/issues/492 adjust cldr/*BreakTest generation for Unicode 15.1

* Command-line environment setup

Markus:

export UNIDATA_ROOT=~/unidata
export UNICODE_DATA=$UNIDATA_ROOT/uni16/final
export CLDR_SRC=~/cldr/uni/src
export ICU_ROOT=~/icu/uni
export ICU_SRC=$ICU_ROOT/src
export ICU_OUT=$ICU_ROOT/dbg
export ICUDT=icudt76b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_OUT/icu4c/lib
export UNICODE_TOOLS=~/unitools/mine/src

Elango:

export UNIDATA_ROOT=~/oss/unidata
export UNICODE_DATA=$UNIDATA_ROOT/uni16/final
export CLDR_SRC=~/oss/cldr/mine/src
export ICU_ROOT=~/oss/icu
export ICU_SRC=$ICU_ROOT
export ICU_OUT=$ICU_ROOT
export ICUDT=icudt76b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_OUT/icu4c/lib
export UNICODE_TOOLS=~/oss/unicodetools/mine/src

*** Unicode version numbers
- icu4c/source/data/makedata.mak
- icu4c/source/common/unicode/uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

*** Configure: Build Unicode data for ICU4J
- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
    so that the makefiles see the new version number.
- FYI: The option that adds the additional Unicode data files for ICU4J is
    ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data
- Markus's version:
  cd $ICU_OUT/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data CXXFLAGS="-DU_USING_ICU_NAMESPACE=0 -Wimplicit-fallthrough" CPPFLAGS="-DU_NO_DEFAULT_INCLUDE_UTF_HEADERS=1 -fsanitize=bounds" LDFLAGS=-fsanitize=bounds ../../src/icu4c/source/runConfigureICU --enable-debug --disable-release Linux/clang --prefix=/usr/local/google/home/mscherer/icu/mine/inst/icu4c > config.out 2>&1 ; tail config.out
- Elango's version (diff default C++ compiler & in-source build paths):
  cd $ICU_OUT/icu4c/source
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data CXXFLAGS="-DU_USING_ICU_NAMESPACE=0 -Wimplicit-fallthrough" CPPFLAGS="-DU_NO_DEFAULT_INCLUDE_UTF_HEADERS=1 -fsanitize=bounds" LDFLAGS=-fsanitize=bounds ./runConfigureICU --enable-debug --disable-release Linux/gcc --prefix=/usr/local/google/home/elango/oss/icu/icu4c > config.out 2>&1 ; tail config.out

*** data files & enums & parser code

* download files
- same as for the early Unicode Tools setup and data refresh:
  https://github.com/unicode-org/unicodetools/blob/main/docs/index.md
  https://github.com/unicode-org/unicodetools/blob/main/docs/inputdata.md
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + use an FTP client; anonymous FTP from www.unicode.org at /Public/draft etc.
  + subfolders: emoji, idna, security, ucd, uca
  + for pre-release (alpha, beta) data files:
    ~ if one of us produces the alpha.zip or beta.zip collection of data files for publication,
      then we can use its contents directly (no FTP from unicode.org necessary)
    ~ otherwise download from https://www.unicode.org/Public/draft/
    ~ you can omit or discard the UCD/charts/ and UCD/ucdxml/ files/folders
    ~ you can omit or discard UCD/ucd/Unihan.zip
  + alternate way of fetching files, if available:
    copy the files from a Unicode Tools workspace that is up to date with
    https://github.com/unicode-org/unicodetools
    and which might at this point be *ahead* of "Public"
    ~ before the Unicode release copy files from "dev" subfolders, for example
      https://github.com/unicode-org/unicodetools/tree/main/unicodetools/data/ucd/dev
  + for final-release data files, the source of truth is the files in
    https://www.unicode.org/Public/(version) [=UCD],
    https://www.unicode.org/Public/UCA/(version),
    https://www.unicode.org/Public/idna/(version),
    etc.
- get the CLDR version of GraphemeBreakTest.txt from CLDR (if it has been updated there already)
  or from the UCD/cldr/ output folder of the Unicode Tools:
  From Unicode 12/CLDR 35/ICU 64 to Unicode 15.0/CLDR 43/ICU 73,
  CLDR used modified grapheme break rules.
  This might happen again.
  + To check in the Unicode Tools workspace:
    ~/unitools/mine/Generated$ meld UCD/16.0.0/auxiliary/*GraphemeBreakTest.txt UCD/16.0.0/cldr/GraphemeBreakTest-cldr.txt
  + If different, and after copying into CLDR:
    cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt icu4c/source/test/testdata
  or
    cp ~/unitools/mine/Generated/UCD/16.0.0/cldr/GraphemeBreakTest-cldr.txt icu4c/source/test/testdata/GraphemeBreakTest.txt
    cp ~/unitools/mine/Generated/UCD/16.0.0/cldr/GraphemeBreakTest-cldr.txt $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    cp ~/unitools/mine/Generated/UCD/16.0.0/cldr/GraphemeBreakTest-cldr.html $CLDR_SRC/common/properties/segments/GraphemeBreakTest.html
  + We may need CLDR versions of WordBreakTest.txt and LineBreakTest.txt
    unless Unicode 16 and CLDR 46 eliminate their differences:
    unicodetools issue #492

* process and/or copy files
- cd $ICU_SRC/tools/unicode
    py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
      py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile
    e.g.
      py/preparseucd.py $UNICODE_DATA --only_ppucd /tmp/ppucd.txt

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values:
    [('blk', {'Garay', 'Tulu_Tigalari', 'Todhri', 'Sunuwar', 'Egyptian_Hieroglyphs_Ext_A', 'Kirat_Rai', 'Symbols_For_Legacy_Computing_Sup', 'Myanmar_Ext_C', 'Ol_Onal', 'Gurung_Khema'}),
    ('sc', {'Gara', 'Onao', 'Todr', 'Krai', 'Tutg', 'Sunu', 'Gukh'}),
    ('InSC', {'Reordering_Killer'})]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    (cd $UNIDATA_ROOT && diff -u uni15.1/final/ucd/PropertyValueAliases.txt uni16/alpha/UCD/ucd/PropertyValueAliases.txt | egrep '^[-+][a-zA-Z]')
    +age; 16.0                             ; V16_0
    +blk; Egyptian_Hieroglyphs_Ext_A       ; Egyptian_Hieroglyphs_Extended_A
    +blk; Garay                            ; Garay
    +blk; Gurung_Khema                     ; Gurung_Khema
    +blk; Kirat_Rai                        ; Kirat_Rai
    +blk; Myanmar_Ext_C                    ; Myanmar_Extended_C
    +blk; Ol_Onal                          ; Ol_Onal
    +blk; Sunuwar                          ; Sunuwar
    +blk; Symbols_For_Legacy_Computing_Sup ; Symbols_For_Legacy_Computing_Supplement
    +blk; Todhri                           ; Todhri
    +blk; Tulu_Tigalari                    ; Tulu_Tigalari
    +InSC; Reordering_Killer               ; Reordering_Killer
    -jg ; Teh_Marbuta_Goal                 ; Hamza_On_Heh_Goal
    +jg ; Teh_Marbuta_Goal                 ; Teh_Marbuta_Goal                 ; Hamza_On_Heh_Goal
    +sc ; Gara                             ; Garay
    +sc ; Gukh                             ; Gurung_Khema
    +sc ; Krai                             ; Kirat_Rai
    +sc ; Onao                             ; Ol_Onal
    +sc ; Sunu                             ; Sunuwar
    +sc ; Todr                             ; Todhri
    +sc ; Tutg                             ; Tulu_Tigalari
  + copy new API constants from the preparseucd.py output into the .h/.java files,
    add/adjust comments, wrap lines, and set numeric values
  + (ignore Age: no API constants for that)
  + Block: uchar.h before UBLOCK_COUNT,
      UCharacter.UnicodeBlock IDs, UCharacter.UnicodeBlock objects
  + Script: uscript.h & com.ibm.icu.lang.UScript
  + for new scripts: fix expectedLong names
      in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
  + Indic_Syllabic_Category: uchar.h & UCharacter.IndicSyllabicCategory
  + after adding new API constants, run preparseucd.py again

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* build ICU
  to make sure that there are no syntax errors

  $ICU_OUT/icu4c$ echo;echo; date; make -j20 tests &> out.txt ; tail -n 30 out.txt ; date

* Bazel build process

See https://unicode-org.github.io/icu/processes/unicode-update#bazel-build-process
for an overview and for setup instructions.

Consider running `bazelisk --version` outside of the $ICU_SRC folder
to find out the latest `bazel` version, and
copying that version number into the $ICU_SRC/.bazeliskrc config file.
(Revert if you find incompatibilities, or, better, update our build & config files.)

* generate data files

- remember to define the environment variables
  (see the start of the section for this Unicode version)
- cd $ICU_SRC
- optional but not necessary:
    bazelisk clean
      or even
    bazelisk clean --expunge
- build/bootstrap/generate new files:
    icu4c/source/data/unidata/generate.sh

* run & fix ICU4C tests
- Note: Some of the collation data and test data will be updated below,
  so at this time we might get some collation test failures.
  Ignore these for now.
- Some properties are hardcoded in the ICU libraries because they apply to
  few characters or ranges, and are not expected to change often.
  They are tested at least in C++ intltest (e.g., against ppucd.txt).
  If these tests fail, then update the implementation and the tests.
- update CLDR GraphemeBreakTest.txt
  (see the download section above about this file)
    cd ~/unitools/mine/Generated
    cp UCD/16.0.0/cldr/GraphemeBreakTest-cldr.txt $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    cp UCD/16.0.0/cldr/GraphemeBreakTest-cldr.html $CLDR_SRC/common/properties/segments/GraphemeBreakTest.html
    cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt $ICU_SRC/icu4c/source/test/testdata
- Robin or Andy helps with RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools,
  and a tool-tailored version goes into CLDR, see
    https://github.com/unicode-org/unicodetools/blob/main/docs/uca/index.md

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/collate/src/test/resources/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- update CollationFCD.java:
  copy & paste the initializers of lcccIndex[] etc.
  from
    $ICU_SRC/icu4c/source/i18n/collationfcd.cpp
  to
    $ICU_SRC/icu4j/main/collate/src/main/java/com/ibm/icu/impl/coll/CollationFCD.java
- generate data files, as above (generate.sh), now to pick up new collation data
- rebuild ICU4C (make clean, make check, as usual)

* Unihan collators
    https://github.com/unicode-org/unicodetools/blob/main/docs/unihan.md
- run Unicode Tools GenerateUnihanCollators & GenerateUnihanCollatorFiles,
  check CLDR diffs, copy to CLDR, test CLDR, ... as documented there
- generate ICU zh collation data
    WARNING: outdated, don't do this, follow the tools/cldr/cldr-to-icu/README.md file!
    --- Old text from here:
    instructions inspired by
    https://github.com/unicode-org/icu/blob/main/tools/cldr/cldr-to-icu/README.txt and
    https://github.com/unicode-org/icu/blob/main/icu4c/source/data/cldr-icu-readme.txt
  + setup:
    export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
        (didn't work without setting JAVA_HOME,
         nor with the Google default of /usr/local/buildtools/java/jdk
         [Google security limitations in the XML parser])
    export TOOLS_ROOT=$ICU_SRC/tools
    export CLDR_DIR=$CLDR_SRC
    export CLDR_DATA_DIR=$CLDR_DIR
        (pointing to the "raw" data, not cldr-staging/.../production should be ok for the relevant files)
    cd "$TOOLS_ROOT/cldr/lib"
    ./install-cldr-jars.sh "$CLDR_DIR"
  + generate the files we need
    cd "$TOOLS_ROOT/cldr/cldr-to-icu"
    ant -f build-icu-data.xml -DoutDir=/tmp/icu -DoutputTypes=coll,transforms -DlocaleIdFilter='zh.*'
  + diff
    cd $ICU_SRC
    meld icu4c/source/data/coll/zh.txt /tmp/icu/coll/zh.txt
    meld icu4c/source/data/translit/Hani_Latn.txt /tmp/icu/translit/Hani_Latn.txt
  + copy into the source tree
    cd $ICU_SRC
    cp /tmp/icu/coll/zh.txt icu4c/source/data/coll/zh.txt
    cp /tmp/icu/translit/Hani_Latn.txt icu4c/source/data/translit/Hani_Latn.txt
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_OUT/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    NOTE: If you get the error "No rule to make target 'out/build/icudt70l/uprops.icu'",
    you need to reconfigure with unicore data; see the "configure" line above.
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt76b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt76b
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt76l.dat ./out/icu4j/icudt76b.dat -s ./out/build/icudt76l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt76b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt76b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt76b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt76b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt76b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt76b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt76b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt76b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the binary data files into the ICU4J tree
    cd $ICU_OUT/icu4c/data/out/icu4j
    cp -v com/ibm/icu/impl/data/icudata/coll/* $ICU_SRC/icu4j/main/collate/src/main/resources/com/ibm/icu/impl/data/icudata/coll
    cp -v com/ibm/icu/impl/data/icudata/brkitr/* $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata/brkitr
    cp -v com/ibm/icu/impl/data/icudata/confusables.cfu $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata
    cp -v com/ibm/icu/impl/data/icudata/*.nrm $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata
    cd com/ibm/icu/impl/data/icudata/
    ls *.icu | egrep -v "cnvalias.icu" | awk '{print "cp " $0 " $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/icudata";}' | sh
- The procedure above is very conservative:
  It refreshes only the parts of the ICU4J data that we think are affected by a Unicode data update.
  It avoids dealing with any other discrepancies
  between the source and generated data files.
  *If* instead we wanted to refresh *all* of the ICU4J data from ICU4C:
      $ICU_OUT/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/UCD/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example:
    ~/unitools/mine/src$ diff -u unicodetools/data/ucd/15.1.0/extracted/DerivedGeneralCategory.txt unicodetools/data/ucd/dev/extracted/DerivedGeneralCategory.txt | grep '; Nd' | egrep '^\+'
    -->
      +10D40..10D49  ; Nd #  [10] GARAY DIGIT ZERO..GARAY DIGIT NINE
      +116D0..116E3  ; Nd #  [20] MYANMAR PAO DIGIT ZERO..MYANMAR EASTERN PWO KAREN DIGIT NINE
      +11BF0..11BF9  ; Nd #  [10] SUNUWAR DIGIT ZERO..SUNUWAR DIGIT NINE
      +16130..16139  ; Nd #  [10] GURUNG KHEMA DIGIT ZERO..GURUNG KHEMA DIGIT NINE
      +16D70..16D79  ; Nd #  [10] KIRAT RAI DIGIT ZERO..KIRAT RAI DIGIT NINE
      +1CCF0..1CCF9  ; Nd #  [10] OUTLINED DIGIT ZERO..OUTLINED DIGIT NINE
      +1E5F1..1E5FA  ; Nd #  [10] OL ONAL DIGIT ZERO..OL ONAL DIGIT NINE
  --> https://github.com/unicode-org/cldr/pull/3658

*** merge the Unicode update branch back onto the main branch
- make sure that changes to Unicode tools are checked in:
  https://github.com/unicode-org/unicodetools

---------------------------------------------------------------------------- ***

Unicode 15.1 update for ICU 74

https://www.unicode.org/versions/Unicode15.1.0/
https://www.unicode.org/versions/beta-15.1.0.html
https://www.unicode.org/Public/draft/
https://www.unicode.org/reports/uax-proposed-updates.html
https://www.unicode.org/reports/tr44/tr44-31.html

https://unicode-org.atlassian.net/browse/ICU-22404 Unicode 15.1
https://unicode-org.atlassian.net/browse/CLDR-16669 BRS Unicode 15.1

https://github.com/unicode-org/unicodetools/issues/492 adjust cldr/*BreakTest generation for Unicode 15.1

* Command-line environment setup

Markus:

export UNIDATA_ROOT=~/unidata
export UNICODE_DATA=$UNIDATA_ROOT/uni15.1/final
export CLDR_SRC=~/cldr/uni/src
export ICU_ROOT=~/icu/uni
export ICU_SRC=$ICU_ROOT/src
export ICU_OUT=$ICU_ROOT/dbg
export ICUDT=icudt74b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_OUT/icu4c/lib
export UNICODE_TOOLS=~/unitools/mine/src

Elango:

export UNIDATA_ROOT=~/oss/unidata
export UNICODE_DATA=$UNIDATA_ROOT/uni15.1/snapshot
export CLDR_SRC=~/oss/cldr/mine/src
export ICU_ROOT=~/oss/icu
export ICU_SRC=$ICU_ROOT
export ICU_OUT=$ICU_ROOT
export ICUDT=icudt74b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_OUT/icu4c/lib
export UNICODE_TOOLS=~/oss/unicodetools/mine/src

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

*** Configure: Build Unicode data for ICU4J
- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
    so that the makefiles see the new version number.
  cd $ICU_OUT/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data ../../../doconfig-clang-dbg.sh

*** data files & enums & parser code

* download files
- same as for the early Unicode Tools setup and data refresh:
  https://github.com/unicode-org/unicodetools/blob/main/docs/index.md
  https://github.com/unicode-org/unicodetools/blob/main/docs/inputdata.md
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + new since Unicode 15.1:
    for the pre-release (alpha, beta) data files,
    download all of https://www.unicode.org/Public/draft/
    (you can omit or discard the UCD/charts/ and UCD/ucdxml/ files/folders)
  + if one of us produces the alpha.zip or beta.zip collection of data files for publication,
    then we can use its contents directly (no FTP from unicode.org necessary)
  + for final-release data files, the source of truth are the files in
    https://www.unicode.org/Public/(version) [=UCD],
    https://www.unicode.org/Public/UCA/(version),
    https://www.unicode.org/Public/idna/(version),
    etc.
  + use an FTP client; anonymous FTP from www.unicode.org at /Public/draft etc.
  + subfolders: emoji, idna, security, ucd, uca
  + whichever way you download the files:
    ~ inside ucd: extract Unihan.zip to "here" (.../UCD/ucd/Unihan/*.txt), delete Unihan.zip
    ~ split Unihan into single-property files
      ~/unitools/mine/src$ py/splitunihan.py $UNICODE_DATA/UCD/ucd/Unihan
    ~ FYI: for updating ICU, we do not actually need Unihan.zip contents
  + alternate way of fetching files, if available:
    copy the files from a Unicode Tools workspace that is up to date with
    https://github.com/unicode-org/unicodetools
    and which might at this point be *ahead* of "Public"
    ~ before the Unicode release copy files from "dev" subfolders, for example
      https://github.com/unicode-org/unicodetools/tree/main/unicodetools/data/ucd/dev
- get the CLDR version of GraphemeBreakTest.txt from CLDR (if it has been updated there already)
    or from the UCD/cldr/ output folder of the Unicode Tools:
    From Unicode 12/CLDR 35/ICU 64 to Unicode 15.0/CLDR 43/ICU 73,
    CLDR used modified grapheme break rules.
    This might happen again.
  cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt icu4c/source/test/testdata
    or
  cp ~/unitools/mine/Generated/UCD/15.1.0/cldr/GraphemeBreakTest-cldr.txt icu4c/source/test/testdata/GraphemeBreakTest.txt
  cp ~/unitools/mine/Generated/UCD/15.1.0/cldr/GraphemeBreakTest-cldr.txt $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
  cp ~/unitools/mine/Generated/UCD/15.1.0/cldr/GraphemeBreakTest-cldr.html $CLDR_SRC/common/properties/segments/GraphemeBreakTest.html
  + Done: figure out whether we need a CLDR version of LineBreakTest.txt:
    unicodetools issue #492
    We should have had one, and instead rbbitst.cpp has "known issue" exception.
    Unicode 16 and CLDR 46 might get back to having the same behavior.
- cp -v $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA
  + done in ICU 76: modify preparseucd.py to copy this file

* Note: Since Unicode 15.1, data files are no longer published with version suffixes
  even during the alpha or beta.
  Thus we no longer need steps & tools to remove those suffixes.
  (remove this note next time)

* process and/or copy files
- cd $ICU_SRC/tools/unicode
  py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values: [('blk', {'CJK_Ext_I'}), ('lb', {'VF', 'VI', 'AS', 'AK', 'AP'})]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    cd $UNIDATA_ROOT
    $ diff -u uni15.0/ucd/PropertyValueAliases.txt uni15.1/snapshot/UCD/ucd/PropertyValueAliases.txt | egrep '^[-+][a-zA-Z]'
    +age; 15.1                             ; V15_1
    +blk; CJK_Ext_I                        ; CJK_Unified_Ideographs_Extension_I
    +IDSU; N                               ; No                               ; F                                ; False
    +IDSU; Y                               ; Yes                              ; T                                ; True
    +ID_Compat_Math_Continue; N            ; No                               ; F                                ; False
    +ID_Compat_Math_Continue; Y            ; Yes                              ; T                                ; True
    +ID_Compat_Math_Start; N               ; No                               ; F                                ; False
    +ID_Compat_Math_Start; Y               ; Yes                              ; T                                ; True
    +lb ; AK                               ; Aksara
    +lb ; AP                               ; Aksara_Prebase
    +lb ; AS                               ; Aksara_Start
    +lb ; VF                               ; Virama_Final
    +lb ; VI                               ; Virama
  -> add new blocks to uchar.h before UBLOCK_COUNT
    use long property names for enum constants,
    for the trailing comment get the block start code point: diff old & new Blocks.txt
    cd $UNIDATA_ROOT
    $ diff -u uni15.0/ucd/Blocks.txt uni15.1/snapshot/UCD/ucd/Blocks.txt | egrep '^[-+][0-9A-Z]'
    +2EBF0..2EE4F; CJK Unified Ideographs Extension I
    (ignore blocks whose end code point changed)
  -> add new blocks to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add new blocks to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
  -> add new line break values to uchar.h & UCharacter.LineBreak

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* build ICU
  to make sure that there are no syntax errors

  $ICU_OUT/icu4c$ echo;echo; date; make -j7 tests &> out.txt ; tail -n 30 out.txt ; date

* update spoof checker UnicodeSet initializers:
    inclusionPat & recommendedPat in i18n/uspoof.cpp
    INCLUSION & RECOMMENDED in SpoofChecker.java
- make sure that the Unicode Tools tree contains the latest security data files
- go to Unicode Tools org.unicode.text.tools.RecommendedSetGenerator
- run the tool (no special environment variables needed)
  cd $UNICODE_TOOLS
  mvn -s ~/.m2/settings.xml compile exec:java -Dexec.mainClass="org.unicode.text.tools.RecommendedSetGenerator" \ 
      -Dexec.args="" -am -pl unicodetools  -DCLDR_DIR=$(cd ../../../cldr/mine/src ; pwd) -DUNICODETOOLS_REPO_DIR=$(pwd)
- copy & paste from the Console output into the .cpp & .java files

* check hardcoded IDS_Unary_Operator
- new in Unicode 15.1, hardcoded because trivial, and unlikely to change
- check that it has not changed:
    (cd $UNICODE_DATA && grep -r --include=PropList.txt IDS_Unary_Operator)
- if it has changed, then update the implementation and the tests
- Since ICU 75, this property is tested in C++ intltest against ppucd.txt.

* check hardcoded ID_Compat_Math_Start & ID_Compat_Math_Continue
- new in Unicode 15.1, hardcoded because trivial, and unlikely to change
- check that they have not changed:
    (cd $UNICODE_DATA && grep -r --include=PropList.txt ID_Compat_Math)
- if they have changed, then update the implementation and the tests
- Since ICU 75, these properties are tested in C++ intltest against ppucd.txt.

* Bazel build process

See https://unicode-org.github.io/icu/processes/unicode-update#bazel-build-process
for an overview and for setup instructions.

Consider running `bazelisk --version` outside of the $ICU_SRC folder
to find out the latest `bazel` version, and
copying that version number into the $ICU_SRC/.bazeliskrc config file.
(Revert if you find incompatibilities, or, better, update our build & config files.)

* generate data files

- remember to define the environment variables
  (see the start of the section for this Unicode version)
- cd $ICU_SRC
- optional but not necessary:
    bazelisk clean
      or even
    bazelisk clean --expunge
- build/bootstrap/generate new files:
    icu4c/source/data/unidata/generate.sh

* Since Unicode 15.1, the UTS #46 data derivation no longer looks at the decompositions (NFD).
  These characters are now just valid, no longer disallowed_STD3_valid.
  Remove special handling of U+2260, U+226E, U+226F (isNonASCIIDisallowedSTD3Valid())
  from uts46.cpp & UTS46.java,
  and special test code from uts46test.cpp & UTS46Test.java.
  (remove this section next time)

* run & fix ICU4C tests
- Note: Some of the collation data and test data will be updated below,
  so at this time we might get some collation test failures.
  Ignore these for now.
- fix Unicode Tools class Segmenter to generate correct *BreakTest.txt files
- update CLDR GraphemeBreakTest.txt
    cd ~/unitools/mine/Generated
    cp UCD/15.1.0/cldr/GraphemeBreakTest-cldr.txt $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    cp UCD/15.1.0/cldr/GraphemeBreakTest-cldr.html $CLDR_SRC/common/properties/segments/GraphemeBreakTest.html
    cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt $ICU_SRC/icu4c/source/test/testdata
- Robin or Andy helps with RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools,
  and a tool-tailored version goes into CLDR, see
    https://github.com/unicode-org/unicodetools/blob/main/docs/uca/index.md

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- generate data files, as above (generate.sh), now to pick up new collation data
- update CollationFCD.java:
  copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java
- rebuild ICU4C (make clean, make check, as usual)

* Unihan collators
    https://github.com/unicode-org/unicodetools/blob/main/docs/unihan.md
- run Unicode Tools GenerateUnihanCollators & GenerateUnihanCollatorFiles,
  check CLDR diffs, copy to CLDR, test CLDR, ... as documented there
- generate ICU zh collation data
    instructions inspired by
    https://github.com/unicode-org/icu/blob/main/tools/cldr/cldr-to-icu/README.txt and
    https://github.com/unicode-org/icu/blob/main/icu4c/source/data/cldr-icu-readme.txt
  + setup:
    export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
        (didn't work without setting JAVA_HOME,
         nor with the Google default of /usr/local/buildtools/java/jdk
         [Google security limitations in the XML parser])
    export TOOLS_ROOT=$ICU_SRC/tools
    export CLDR_DIR=$CLDR_SRC
    export CLDR_DATA_DIR=$CLDR_DIR
        (pointing to the "raw" data, not cldr-staging/.../production should be ok for the relevant files)
    cd "$TOOLS_ROOT/cldr/lib"
    ./install-cldr-jars.sh "$CLDR_DIR"
  + generate the files we need
    cd "$TOOLS_ROOT/cldr/cldr-to-icu"
    ant -f build-icu-data.xml -DoutDir=/tmp/icu -DoutputTypes=coll,transforms -DlocaleIdFilter='zh.*'
  + diff
    cd $ICU_SRC
    meld icu4c/source/data/coll/zh.txt /tmp/icu/coll/zh.txt
    meld icu4c/source/data/translit/Hani_Latn.txt /tmp/icu/translit/Hani_Latn.txt
  + copy into the source tree
    cd $ICU_SRC
    cp /tmp/icu/coll/zh.txt icu4c/source/data/coll/zh.txt
    cp /tmp/icu/translit/Hani_Latn.txt icu4c/source/data/translit/Hani_Latn.txt
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_OUT/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    NOTE: If you get the error "No rule to make target 'out/build/icudt70l/uprops.icu'",
    you need to reconfigure with unicore data; see the "configure" line above.
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt74b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt74b
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt74l.dat ./out/icu4j/icudt74b.dat -s ./out/build/icudt74l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt74b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt74b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt74b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt74b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt74b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt74b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt74b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt74b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the binary data files into the ICU4J tree
    cd $ICU_OUT/icu4c/data/out/icu4j
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/$ICUDT/coll
    cp -v com/ibm/icu/impl/data/$ICUDT/brkitr/* $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp -v com/ibm/icu/impl/data/$ICUDT/confusables.cfu $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/*.nrm $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/$ICUDT
    cd com/ibm/icu/impl/data/$ICUDT/
    ls *.icu | egrep -v "cnvalias.icu" | awk '{print "cp " $0 " $ICU_SRC/icu4j/main/core/src/main/resources/com/ibm/icu/impl/data/$ICUDT";}' | sh
- The procedure above is very conservative:
  It refreshes only the parts of the ICU4J data that we think are affected by a Unicode data update.
  It avoids dealing with any other discrepancies
  between the source and generated data files.
  *If* instead we wanted to refresh *all* of the ICU4J data from ICU4C:
      $ICU_OUT/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/UCD/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/core/src/test/resources/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example:
    ~/icu/mine/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt > /tmp/icu/nv4-15.txt
    ~/icu/uni/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt > /tmp/icu/nv4-15.1.txt
    ~/icu/uni/src$ diff -u /tmp/icu/nv4-15.txt /tmp/icu/nv4-15.1.txt
    -->
    (empty this time)
  or:
    ~/unitools/mine/src$ diff -u unicodetools/data/ucd/15.0.0/extracted/DerivedGeneralCategory.txt unicodetools/data/ucd/dev/extracted/DerivedGeneralCategory.txt | grep '; Nd' | egrep '^\+'
    -->
    (empty this time)
  Unicode 15.1:
    (none this time)

*** merge the Unicode update branch back onto the main branch
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- if there is a merge conflict in icudata.jar, here is one way to deal with it:
  +   remove icudata.jar from the commit so that rebasing is trivial
  + ~/icu/uni/src$ git restore --source=main icu4j/main/shared/data/icudata.jar
  + ~/icu/uni/src$ git commit -a --amend
  +   switch to main, pull updates, switch back to the dev branch
  + ~/icu/uni/src$ git rebase main
  +   rebuild icudata.jar
  + ~/icu/uni/src$ git commit -a --amend
  + ~/icu/uni/src$ git push -f
- make sure that changes to Unicode tools are checked in:
  https://github.com/unicode-org/unicodetools

---------------------------------------------------------------------------- ***

CLDR 43 root collation update for ICU 73

Partial update only for the root collation.
See
- https://unicode-org.atlassian.net/browse/CLDR-15946
  Treat quote marks as equivalent when strength=UCOL_PRIMARY
- https://github.com/unicode-org/cldr/pull/2691
  CLDR-15946 make fancy quotes primary-equal to ASCII fallbacks
- https://github.com/unicode-org/cldr/pull/2833
  CLDR-15946 make fancy quotes secondary-different from each other

The related changes to tailorings were already integrated in an earlier PR for
https://unicode-org.atlassian.net/browse/ICU-22220 ICU 73rc BRS.

This update is for the root collation,
which is handled by different tools than the locale data updates.

* Command-line environment setup

export UNICODE_DATA=~/unidata/uni15/20220830
export CLDR_SRC=~/cldr/uni/src
export ICU_ROOT=~/icu/uni
export ICU_SRC=$ICU_ROOT/src
export ICUDT=icudt73b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** Configure: Build Unicode data for ICU4J
  cd $ICU_ROOT/dbg/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data ../../../doconfig-clang-dbg.sh

* Bazel build process

See https://unicode-org.github.io/icu/processes/unicode-update#bazel-build-process
for an overview and for setup instructions.

Consider running `bazelisk --version` outside of the $ICU_SRC folder
to find out the latest `bazel` version, and
copying that version number into the $ICU_SRC/.bazeliskrc config file.
(Revert if you find incompatibilities, or, better, update our build & config files.)

* generate data files

- remember to define the environment variables
  (see the start of the section for this Unicode version)
- cd $ICU_SRC
- optional but not necessary:
    bazelisk clean
      or even
    bazelisk clean --expunge
- build/bootstrap/generate new files:
    icu4c/source/data/unidata/generate.sh

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools,
  and a tool-tailored version goes into CLDR, see
    https://github.com/unicode-org/unicodetools/blob/main/docs/uca/index.md

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- generate data files, as above (generate.sh), now to pick up new collation data
- rebuild ICU4C (make clean, make check, as usual)

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    NOTE: If you get the error "No rule to make target 'out/build/icudt70l/uprops.icu'",
    you need to reconfigure with unicore data; see the "configure" line above.
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt73b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt73b
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt73l.dat ./out/icu4j/icudt73b.dat -s ./out/build/icudt73l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt73b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt73b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt73b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt73b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt73b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt73b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt73b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt73b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT
- new for ICU 73: also copy the binary data files directly into the ICU4J tree
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* $ICU_SRC/icu4j/maven-build/maven-icu4j-datafiles/src/main/resources/com/ibm/icu/impl/data/$ICUDT/coll

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** merge the Unicode update branch back onto the main branch
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- if there is a merge conflict in icudata.jar, here is one way to deal with it:
  +   remove icudata.jar from the commit so that rebasing is trivial
  + ~/icu/uni/src$ git restore --source=main icu4j/main/shared/data/icudata.jar
  + ~/icu/uni/src$ git commit -a --amend
  +   switch to main, pull updates, switch back to the dev branch
  + ~/icu/uni/src$ git rebase main
  +   rebuild icudata.jar
  + ~/icu/uni/src$ git commit -a --amend
  + ~/icu/uni/src$ git push -f
- make sure that changes to Unicode tools are checked in:
  https://github.com/unicode-org/unicodetools

---------------------------------------------------------------------------- ***

Unicode 15.0 update for ICU 72

https://www.unicode.org/versions/Unicode15.0.0/
https://www.unicode.org/versions/beta-15.0.0.html
https://www.unicode.org/Public/15.0.0/ucd/
https://www.unicode.org/reports/uax-proposed-updates.html
https://www.unicode.org/reports/tr44/tr44-29.html

https://unicode-org.atlassian.net/browse/ICU-21980 Unicode 15
https://unicode-org.atlassian.net/browse/CLDR-15516 Unicode 15
https://unicode-org.atlassian.net/browse/CLDR-15253 Unicode 15 script metadata (in CLDR 41)

* Command-line environment setup

export UNICODE_DATA=~/unidata/uni15/20220830
export CLDR_SRC=~/cldr/uni/src
export ICU_ROOT=~/icu/uni
export ICU_SRC=$ICU_ROOT/src
export ICUDT=icudt72b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
    so that the makefiles see the new version number.
  cd $ICU_ROOT/dbg/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data ../../../doconfig-clang-dbg.sh

*** data files & enums & parser code

* download files
- same as for the early Unicode Tools setup and data refresh:
  https://github.com/unicode-org/unicodetools/blob/main/docs/index.md
  https://github.com/unicode-org/unicodetools/blob/main/docs/inputdata.md
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + subfolders: emoji, idna, security, ucd, uca
  + old way of fetching files: from the "Public" area on unicode.org
    ~ inside ucd: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip
    ~ split Unihan into single-property files
      ~/unitools/mine/src$ py/splitunihan.py $UNICODE_DATA/ucd/Unihan
  + new way of fetching files, if available:
    copy the files from a Unicode Tools workspace that is up to date with
    https://github.com/unicode-org/unicodetools
    and which might at this point be *ahead* of "Public"
    ~ before the Unicode release copy files from "dev" subfolders, for example
      https://github.com/unicode-org/unicodetools/tree/main/unicodetools/data/ucd/dev
  + get GraphemeBreakTest-cldr.txt from $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    or from the UCD/cldr/ output folder of the Unicode Tools:
    Since Unicode 12/CLDR 35/ICU 64 CLDR uses modified break rules.
  cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt icu4c/source/test/testdata
    or
  cp ~/unitools/mine/Generated/UCD/15.0.0/cldr/GraphemeBreakTest-cldr.txt icu4c/source/test/testdata/GraphemeBreakTest.txt

* for manual diffs and for Unicode Tools input data updates:
  remove version suffixes from the file names
    ~$ unidata/desuffixucd.py $UNICODE_DATA
  (see https://github.com/unicode-org/unicodetools/blob/main/docs/inputdata.md)

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

- cp -v $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values: [('blk', {'Nag_Mundari', 'CJK_Ext_H', 'Kawi', 'Kaktovik_Numerals', 'Devanagari_Ext_A', 'Arabic_Ext_C', 'Cyrillic_Ext_D'}), ('sc', {'Nagm', 'Kawi'})]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    ~/unidata$ diff -u uni14/20210922/ucd/PropertyValueAliases.txt uni15/beta/ucd/PropertyValueAliases.txt | egrep '^[-+][a-zA-Z]'
    +age; 15.0                             ; V15_0
    +blk; Arabic_Ext_C                     ; Arabic_Extended_C
    +blk; CJK_Ext_H                        ; CJK_Unified_Ideographs_Extension_H
    +blk; Cyrillic_Ext_D                   ; Cyrillic_Extended_D
    +blk; Devanagari_Ext_A                 ; Devanagari_Extended_A
    +blk; Kaktovik_Numerals                ; Kaktovik_Numerals
    +blk; Kawi                             ; Kawi
    +blk; Nag_Mundari                      ; Nag_Mundari
    +sc ; Kawi                             ; Kawi
    +sc ; Nagm                             ; Nag_Mundari
  -> add new blocks to uchar.h before UBLOCK_COUNT
    use long property names for enum constants,
    for the trailing comment get the block start code point: diff old & new Blocks.txt
    ~/unidata$ diff -u uni14/20210922/ucd/Blocks.txt uni15/beta/ucd/Blocks.txt | egrep '^[-+][0-9A-Z]'
    +10EC0..10EFF; Arabic Extended-C
    +11B00..11B5F; Devanagari Extended-A
    +11F00..11F5F; Kawi
    -13430..1343F; Egyptian Hieroglyph Format Controls
    +13430..1345F; Egyptian Hieroglyph Format Controls
    +1D2C0..1D2DF; Kaktovik Numerals
    +1E030..1E08F; Cyrillic Extended-D
    +1E4D0..1E4FF; Nag Mundari
    +31350..323AF; CJK Unified Ideographs Extension H
    (ignore blocks whose end code point changed)
  -> add new blocks to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add new blocks to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
  -> add new scripts to uscript.h & com.ibm.icu.lang.UScript
    Eclipse find     USCRIPT_([^ ]+) *= ([0-9]+),(/.+)
            replace  public static final int \1 = \2; \3
  -> for new scripts: fix expectedLong names in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* build ICU
  to make sure that there are no syntax errors

  $ICU_ROOT/dbg/icu4c$ echo;echo; date; make -j7 tests &> out.txt ; tail -n 30 out.txt ; date

* update spoof checker UnicodeSet initializers:
    inclusionPat & recommendedPat in i18n/uspoof.cpp
    INCLUSION & RECOMMENDED in SpoofChecker.java
- make sure that the Unicode Tools tree contains the latest security data files
- go to Unicode Tools org.unicode.text.tools.RecommendedSetGenerator
- run the tool (no special environment variables needed)
- copy & paste from the Console output into the .cpp & .java files

* Bazel build process

See https://unicode-org.github.io/icu/processes/unicode-update#bazel-build-process
for an overview and for setup instructions.

Consider running `bazelisk --version` outside of the $ICU_SRC folder
to find out the latest `bazel` version, and
copying that version number into the $ICU_SRC/.bazeliskrc config file.
(Revert if you find incompatibilities, or, better, update our build & config files.)

* generate data files

- remember to define the environment variables
  (see the start of the section for this Unicode version)
- cd $ICU_SRC
- optional but not necessary:
    bazelisk clean
- build/bootstrap/generate new files:
    icu4c/source/data/unidata/generate.sh

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
    ~/unitools/mine/src$ grep disallowed_STD3_valid unicodetools/data/idna/dev/IdnaMappingTable.txt
- Unicode 6.0..15.0: U+2260, U+226E, U+226F
- nothing new in this Unicode version, no test file to update

* run & fix ICU4C tests
- Note: Some of the collation data and test data will be updated below,
  so at this time we might get some collation test failures.
  Ignore these for now.
- fix Unicode Tools class Segmenter to generate correct *BreakTest.txt files
  (no rule changes in Unicode 15)
- update CLDR GraphemeBreakTest.txt
    cd ~/unitools/mine/Generated
    cp UCD/15.0.0/cldr/GraphemeBreakTest-cldr.txt $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    cp UCD/15.0.0/cldr/GraphemeBreakTest-cldr.html $CLDR_SRC/common/properties/segments/GraphemeBreakTest.html
    cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt $ICU_SRC/icu4c/source/test/testdata
- Andy helps with RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools,
  and a tool-tailored version goes into CLDR, see
    https://github.com/unicode-org/unicodetools/blob/main/docs/uca/index.md

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- generate data files, as above (generate.sh), now to pick up new collation data
- update CollationFCD.java:
  copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java
- rebuild ICU4C (make clean, make check, as usual)

* Unihan collators
    https://github.com/unicode-org/unicodetools/blob/main/docs/unihan.md
- run Unicode Tools GenerateUnihanCollators & GenerateUnihanCollatorFiles,
  check CLDR diffs, copy to CLDR, test CLDR, ... as documented there
- generate ICU zh collation data
    instructions inspired by
    https://github.com/unicode-org/icu/blob/main/tools/cldr/cldr-to-icu/README.txt and
    https://github.com/unicode-org/icu/blob/main/icu4c/source/data/cldr-icu-readme.txt
  + setup:
    export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
        (didn't work without setting JAVA_HOME,
         nor with the Google default of /usr/local/buildtools/java/jdk
         [Google security limitations in the XML parser])
    export TOOLS_ROOT=~/icu/uni/src/tools
    export CLDR_DIR=~/cldr/uni/src
    export CLDR_DATA_DIR=~/cldr/uni/src
        (pointing to the "raw" data, not cldr-staging/.../production should be ok for the relevant files)
    cd "$TOOLS_ROOT/cldr/lib"
    ./install-cldr-jars.sh "$CLDR_DIR"
  + generate the files we need
    cd "$TOOLS_ROOT/cldr/cldr-to-icu"
    ant -f build-icu-data.xml -DoutDir=/tmp/icu -DoutputTypes=coll,transforms -DlocaleIdFilter='zh.*'
  + diff
    cd $ICU_SRC
    meld icu4c/source/data/coll/zh.txt /tmp/icu/coll/zh.txt
    meld icu4c/source/data/translit/Hani_Latn.txt /tmp/icu/translit/Hani_Latn.txt
  + copy into the source tree
    cd $ICU_SRC
    cp /tmp/icu/coll/zh.txt icu4c/source/data/coll/zh.txt
    cp /tmp/icu/translit/Hani_Latn.txt icu4c/source/data/translit/Hani_Latn.txt
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    NOTE: If you get the error "No rule to make target 'out/build/icudt70l/uprops.icu'",
    you need to reconfigure with unicore data; see the "configure" line above.
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt72b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt72b
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt72l.dat ./out/icu4j/icudt72b.dat -s ./out/build/icudt72l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt72b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt72b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt72b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt72b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt72b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt72b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt72b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt72b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp -v com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp -v com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp -v com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example:
    ~/icu/mine/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt > /tmp/icu/nv4-14.txt
    ~/icu/uni/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt > /tmp/icu/nv4-15.txt
    ~/icu/uni/src$ diff -u /tmp/icu/nv4-14.txt /tmp/icu/nv4-15.txt
    -->
    +cp;11F54;-Alpha;gc=Nd;InSC=Number;lb=NU;na=KAWI DIGIT FOUR;nt=De;nv=4;SB=NU;WB=NU;-XIDS
    +cp;1E4F4;-Alpha;gc=Nd;-IDS;lb=NU;na=NAG MUNDARI DIGIT FOUR;nt=De;nv=4;SB=NU;WB=NU;-XIDS
  or:
    ~/unitools/mine/src$ diff -u unicodetools/data/ucd/14.0.0-Update/extracted/DerivedGeneralCategory.txt unicodetools/data/ucd/dev/extracted/DerivedGeneralCategory.txt | grep '; Nd' | egrep '^\+'
    -->
    +11F50..11F59  ; Nd #  [10] KAWI DIGIT ZERO..KAWI DIGIT NINE
    +1E4F0..1E4F9  ; Nd #  [10] NAG MUNDARI DIGIT ZERO..NAG MUNDARI DIGIT NINE
  Unicode 15:
    kawi 11F50..11F59 Kawi
    nagm 1E4F0..1E4F9 Nag Mundari
    https://github.com/unicode-org/cldr/pull/2041

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- if there is a merge conflict in icudata.jar, here is one way to deal with it:
  +   remove icudata.jar from the commit so that rebasing is trivial
  + ~/icu/uni/src$ git restore --source=main icu4j/main/shared/data/icudata.jar
  + ~/icu/uni/src$ git commit -a --amend
  +   switch to main, pull updates, switch back to the dev branch
  + ~/icu/uni/src$ git rebase main
  +   rebuild icudata.jar
  + ~/icu/uni/src$ git commit -a --amend
  + ~/icu/uni/src$ git push -f
- make sure that changes to Unicode tools are checked in:
  https://github.com/unicode-org/unicodetools

---------------------------------------------------------------------------- ***

Unicode 14.0 update for ICU 70

https://www.unicode.org/versions/Unicode14.0.0/
https://www.unicode.org/versions/beta-14.0.0.html
https://www.unicode.org/Public/14.0.0/ucd/
https://www.unicode.org/reports/uax-proposed-updates.html
https://www.unicode.org/reports/tr44/tr44-27.html

https://unicode-org.atlassian.net/browse/CLDR-14801
https://unicode-org.atlassian.net/browse/ICU-21635

* Command-line environment setup

export UNICODE_DATA=~/unidata/uni14/20210903
export CLDR_SRC=~/cldr/uni/src
export ICU_ROOT=~/icu/uni
export ICU_SRC=$ICU_ROOT/src
export ICUDT=icudt70b
export ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
export ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
    so that the makefiles see the new version number.
  cd $ICU_ROOT/dbg/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data ../../../doconfig-clang-dbg.sh

*** data files & enums & parser code

* download files
- same as for the early Unicode Tools setup and data refresh:
  https://github.com/unicode-org/unicodetools/blob/main/docs/index.md
  https://github.com/unicode-org/unicodetools/blob/main/docs/inputdata.md
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + subfolders: emoji, idna, security, ucd, uca
  + inside ucd: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip
  + split Unihan into single-property files
    ~/unitools/mine/src$ py/splitunihan.py $UNICODE_DATA/ucd/Unihan
  + get GraphemeBreakTest-cldr.txt from $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    or from the UCD/cldr/ output folder of the Unicode Tools:
    Since Unicode 12/CLDR 35/ICU 64 CLDR uses modified break rules.
  cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt icu4c/source/test/testdata
    or
  cp ~/unitools/mine/Generated/UCD/d19/cldr/GraphemeBreakTest-cldr-14.0.0d19.txt icu4c/source/test/testdata/GraphemeBreakTest.txt

* for manual diffs and for Unicode Tools input data updates:
  remove version suffixes from the file names
    ~$ unidata/desuffixucd.py $UNICODE_DATA
  (see https://github.com/unicode-org/unicodetools/blob/main/docs/inputdata.md)

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

- cp -v $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values:
    [(u'blk', set([u'Toto', u'Tangsa', u'Cypro_Minoan', u'Arabic_Ext_B', u'Vithkuqi', u'Old_Uyghur', u'Latin_Ext_F', u'UCAS_Ext_A', u'Kana_Ext_B', u'Ethiopic_Ext_B', u'Latin_Ext_G', u'Znamenny_Music'])),
    (u'jg', set([u'Vertical_Tail', u'Thin_Yeh'])),
    (u'sc', set([u'Toto', u'Ougr', u'Vith', u'Tnsa', u'Cpmn']))]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    ~/unidata$ diff -u uni13/20200304/ucd/PropertyValueAliases.txt uni14/20210609/ucd/PropertyValueAliases.txt | egrep '^[-+][a-zA-Z]'
    +age; 14.0                             ; V14_0
    +blk; Arabic_Ext_B                     ; Arabic_Extended_B
    +blk; Cypro_Minoan                     ; Cypro_Minoan
    +blk; Ethiopic_Ext_B                   ; Ethiopic_Extended_B
    +blk; Kana_Ext_B                       ; Kana_Extended_B
    +blk; Latin_Ext_F                      ; Latin_Extended_F
    +blk; Latin_Ext_G                      ; Latin_Extended_G
    +blk; Old_Uyghur                       ; Old_Uyghur
    +blk; Tangsa                           ; Tangsa
    +blk; Toto                             ; Toto
    +blk; UCAS_Ext_A                       ; Unified_Canadian_Aboriginal_Syllabics_Extended_A
    +blk; Vithkuqi                         ; Vithkuqi
    +blk; Znamenny_Music                   ; Znamenny_Musical_Notation
    +jg ; Thin_Yeh                         ; Thin_Yeh
    +jg ; Vertical_Tail                    ; Vertical_Tail
    +sc ; Cpmn                             ; Cypro_Minoan
    +sc ; Ougr                             ; Old_Uyghur
    +sc ; Tnsa                             ; Tangsa
    +sc ; Toto                             ; Toto
    +sc ; Vith                             ; Vithkuqi
  -> add new blocks to uchar.h before UBLOCK_COUNT
    use long property names for enum constants,
    for the trailing comment get the block start code point: diff old & new Blocks.txt
    ~/unidata$ diff -u uni13/20200304/ucd/Blocks.txt uni14/20210609/ucd/Blocks.txt | egrep '^[-+][0-9A-Z]'
    +0870..089F; Arabic Extended-B
    +10570..105BF; Vithkuqi
    +10780..107BF; Latin Extended-F
    +10F70..10FAF; Old Uyghur
    -11700..1173F; Ahom
    +11700..1174F; Ahom
    +11AB0..11ABF; Unified Canadian Aboriginal Syllabics Extended-A
    +12F90..12FFF; Cypro-Minoan
    +16A70..16ACF; Tangsa
    -18D00..18D8F; Tangut Supplement
    +18D00..18D7F; Tangut Supplement
    +1AFF0..1AFFF; Kana Extended-B
    +1CF00..1CFCF; Znamenny Musical Notation
    +1DF00..1DFFF; Latin Extended-G
    +1E290..1E2BF; Toto
    +1E7E0..1E7FF; Ethiopic Extended-B
    (ignore blocks whose end code point changed)
  -> add new blocks to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add new blocks to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
  -> add new scripts to uscript.h & com.ibm.icu.lang.UScript
    Eclipse find     USCRIPT_([^ ]+) *= ([0-9]+),(/.+)
            replace  public static final int \1 = \2; \3
  -> for new scripts: fix expectedLong names in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
  -> add new joining groups to uchar.h & UCharacter.JoiningGroup

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* build ICU
  to make sure that there are no syntax errors

  $ICU_ROOT/dbg/icu4c$ echo;echo; date; make -j7 tests &> out.txt ; tail -n 30 out.txt ; date

* update spoof checker UnicodeSet initializers:
    inclusionPat & recommendedPat in i18n/uspoof.cpp
    INCLUSION & RECOMMENDED in SpoofChecker.java
- make sure that the Unicode Tools tree contains the latest security data files
- go to Unicode Tools org.unicode.text.tools.RecommendedSetGenerator
- run the tool (no special environment variables needed)
- copy & paste from the Console output into the .cpp & .java files

* Bazel build process

See https://unicode-org.github.io/icu/processes/unicode-update#bazel-build-process
for an overview and for setup instructions.

Consider running `bazelisk --version` outside of the $ICU_SRC folder
to find out the latest `bazel` version, and
copying that version number into the $ICU_SRC/.bazeliskrc config file.
(Revert if you find incompatibilities, or, better, update our build & config files.)

* generate data files

- remember to define the environment variables
  (see the start of the section for this Unicode version)
- cd $ICU_SRC
- optional but not necessary:
    bazelisk clean
- build/bootstrap/generate new files:
    icu4c/source/data/unidata/generate.sh

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..14.0: U+2260, U+226E, U+226F
- nothing new in this Unicode version, no test file to update

* run & fix ICU4C tests
- fix Unicode Tools class Segmenter to generate correct *BreakTest.txt files
- update CLDR GraphemeBreakTest.txt
    cd ~/unitools/mine/Generated
    cp UCD/d22d/cldr/GraphemeBreakTest-cldr.txt $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    cp UCD/d22d/cldr/GraphemeBreakTest-cldr.html $CLDR_SRC/common/properties/segments/GraphemeBreakTest.html
    cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt $ICU_SRC/icu4c/source/test/testdata
- Andy helps with RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools,
  and a tool-tailored version goes into CLDR, see
    https://github.com/unicode-org/unicodetools/blob/main/docs/uca/index.md

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- generate data files, as above (generate.sh), now to pick up new collation data
- update CollationFCD.java:
  copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java
- rebuild ICU4C (make clean, make check, as usual)

* Unihan collators
    https://github.com/unicode-org/unicodetools/blob/main/docs/unihan.md
- run Unicode Tools GenerateUnihanCollators & GenerateUnihanCollatorFiles,
  check CLDR diffs, copy to CLDR, test CLDR, ... as documented there
- generate ICU zh collation data
    instructions inspired by
    https://github.com/unicode-org/icu/blob/main/tools/cldr/cldr-to-icu/README.txt and
    https://github.com/unicode-org/icu/blob/main/icu4c/source/data/cldr-icu-readme.txt
  + setup:
    export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
        (didn't work without setting JAVA_HOME,
         nor with the Google default of /usr/local/buildtools/java/jdk
         [Google security limitations in the XML parser])
    export TOOLS_ROOT=~/icu/uni/src/tools
    export CLDR_DIR=~/cldr/uni/src
    export CLDR_DATA_DIR=~/cldr/uni/src
        (pointing to the "raw" data, not cldr-staging/.../production should be ok for the relevant files)
    cd "$TOOLS_ROOT/cldr/lib"
    ./install-cldr-jars.sh "$CLDR_DIR"
  + generate the files we need
    cd "$TOOLS_ROOT/cldr/cldr-to-icu"
    ant -f build-icu-data.xml -DoutDir=/tmp/icu -DoutputTypes=coll,transforms -DlocaleIdFilter='zh.*'
  + diff
    cd $ICU_SRC
    meld icu4c/source/data/coll/zh.txt /tmp/icu/coll/zh.txt
    meld icu4c/source/data/translit/Hani_Latn.txt /tmp/icu/translit/Hani_Latn.txt
  + copy into the source tree
    cd $ICU_SRC
    cp /tmp/icu/coll/zh.txt icu4c/source/data/coll/zh.txt
    cp /tmp/icu/translit/Hani_Latn.txt icu4c/source/data/translit/Hani_Latn.txt
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    NOTE: If you get the error "No rule to make target 'out/build/icudt70l/uprops.icu'",
    you need to reconfigure with unicore data; see the "configure" line above.
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt70b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt70b
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt70l.dat ./out/icu4j/icudt70b.dat -s ./out/build/icudt70l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt70b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt70b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt70b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt70b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt70b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt70b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt70b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt70b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp -v com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp -v com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp -v com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example:
    ~/icu/mine/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt > /tmp/icu/nv4-13.txt
    ~/icu/uni/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt > /tmp/icu/nv4-14.txt
    ~/icu/uni/src$ diff -u /tmp/icu/nv4-13.txt /tmp/icu/nv4-14.txt
    -->
    +cp;16AC4;-Alpha;gc=Nd;-IDS;lb=NU;na=TANGSA DIGIT FOUR;nt=De;nv=4;SB=NU;WB=NU;-XIDS
  Unicode 14:
    tnsa 16AC0..16AC9 Tangsa
    https://github.com/unicode-org/cldr/pull/1326

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools are checked in:
  https://github.com/unicode-org/unicodetools

---------------------------------------------------------------------------- ***

Unicode 13.0 update for ICU 66

https://www.unicode.org/versions/Unicode13.0.0/
https://www.unicode.org/versions/beta-13.0.0.html
https://www.unicode.org/Public/13.0.0/ucd/
https://www.unicode.org/reports/uax-proposed-updates.html
https://www.unicode.org/reports/tr44/tr44-25.html

https://unicode-org.atlassian.net/browse/CLDR-13387
https://unicode-org.atlassian.net/browse/ICU-20893

* Command-line environment setup

UNICODE_DATA=~/unidata/uni13/20200212
CLDR_SRC=~/cldr/uni/src
ICU_ROOT=~/icu/uni
ICU_SRC=$ICU_ROOT/src
ICUDT=icudt66b
ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
    so that the makefiles see the new version number.
  cd $ICU_ROOT/dbg/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data ../../../doconfig-clang-dbg.sh

*** data files & enums & parser code

* download files
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + subfolders: emoji, idna, security, ucd, uca
  + inside ucd: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip
  + split Unihan into single-property files
    ~/unitools/trunk/src$ py/splitunihan.py $UNICODE_DATA/ucd/Unihan
  + get GraphemeBreakTest-cldr.txt from $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt
    or from the ucd/cldr/ output folder of the Unicode Tools:
    Since Unicode 12/CLDR 35/ICU 64 CLDR uses modified break rules.
  cp $CLDR_SRC/common/properties/segments/GraphemeBreakTest.txt icu4c/source/test/testdata

* for manual diffs and for Unicode Tools input data updates:
  remove version suffixes from the file names
    ~$ unidata/desuffixucd.py $UNICODE_DATA
  (see https://sites.google.com/site/unicodetools/inputdata)

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

- cp -v $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values:
    [(u'blk', set([u'Symbols_For_Legacy_Computing', u'Dives_Akuru', u'Yezidi',
        u'Tangut_Sup', u'CJK_Ext_G', u'Khitan_Small_Script', u'Chorasmian', u'Lisu_Sup'])),
    (u'sc', set([u'Chrs', u'Diak', u'Kits', u'Yezi'])),
    (u'InPC', set([u'Top_And_Bottom_And_Left']))]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    blk; Chorasmian                       ; Chorasmian
    blk; CJK_Ext_G                        ; CJK_Unified_Ideographs_Extension_G
    blk; Dives_Akuru                      ; Dives_Akuru
    blk; Khitan_Small_Script              ; Khitan_Small_Script
    blk; Lisu_Sup                         ; Lisu_Supplement
    blk; Symbols_For_Legacy_Computing     ; Symbols_For_Legacy_Computing
    blk; Tangut_Sup                       ; Tangut_Supplement
    blk; Yezidi                           ; Yezidi
  -> add to uchar.h before UBLOCK_COUNT
    use long property names for enum constants,
    for the trailing comment get the block start code point: diff old & new Blocks.txt
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2

    sc ; Chrs                             ; Chorasmian
    sc ; Diak                             ; Dives_Akuru
    sc ; Kits                             ; Khitan_Small_Script
    sc ; Yezi                             ; Yezidi
  -> uscript.h & com.ibm.icu.lang.UScript
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

    InPC; Top_And_Bottom_And_Left         ; Top_And_Bottom_And_Left
  -> uchar.h enum UIndicPositionalCategory & UCharacter.java IndicPositionalCategory

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* build ICU (make install)
  to make sure that there are no syntax errors, and
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; date; make -j7 install &> out.txt ; tail -n 30 out.txt ; date

* update spoof checker UnicodeSet initializers:
    inclusionPat & recommendedPat in i18n/uspoof.cpp
    INCLUSION & RECOMMENDED in SpoofChecker.java
- make sure that the Unicode Tools tree contains the latest security data files
- go to Unicode Tools org.unicode.text.tools.RecommendedSetGenerator
- update the hardcoded version number there in the DIRECTORY path
- run the tool (no special environment variables needed)
- copy & paste from the Console output into the .cpp & .java files

* generate normalization data files
  cd $ICU_ROOT/dbg/icu4c
  bin/gennorm2 -o $ICU_SRC/icu4c/source/common/norm2_nfc_data.h -s $ICU4C_UNIDATA/norm2 nfc.txt --csource
  bin/gennorm2 -o $ICU4C_DATA_IN/nfc.nrm     -s $ICU4C_UNIDATA/norm2 nfc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc.nrm    -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc_cf.nrm -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/uts46.nrm   -s $ICU4C_UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install &> out.txt ; tail -n 30 out.txt ; date

* build Unicode tools using CMake+make

$ICU_SRC/tools/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /usr/local/google/home/mscherer/icu/mine/inst/icu4c)
# Location of the ICU4C source tree.
set(ICU4C_SRC_DIR /usr/local/google/home/mscherer/icu/uni/src/icu4c)

  $ICU_ROOT/dbg$
    mkdir -p tools/unicode/c
    cd tools/unicode/c

  $ICU_ROOT/dbg/tools/unicode/c$
    cmake ../../../../src/tools/unicode/c
    make

* generate core properties data files
  $ICU_ROOT/dbg/tools/unicode/c$
    genprops/genprops $ICU_SRC/icu4c
- tool failure:
    genprops: Script_Extensions indexes overflow bit field
    genprops: error parsing or setting values from ppucd.txt line 32696 - U_BUFFER_OVERFLOW_ERROR
  -> uprops.icu data file format :
     add two more bits to store a script code or Script_Extensions index
  -> generator code, C++ & Java runtime, uprops.icu format version 7.7
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..13.0: U+2260, U+226E, U+226F
- nothing new in this Unicode version, no test file to update

* run & fix ICU4C tests
- fix Unicode Tools class Segmenter to generate correct *BreakTest.txt files
- Andy helps with RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools, see
    https://sites.google.com/site/unicodetools/home#TOC-UCA
  diff the main mapping file, look for bad changes
  (for example, more bytes per weight for common characters)
    ~/svn.unitools/trunk$ sed -r -f ~/cldr/uni/src/tools/scripts/uca/blankweights.sed ../Generated/UCA/13.0.0/CollationAuxiliary/FractionalUCA.txt > ../frac-13.0.txt
    ~/svn.unitools/trunk$ meld ../frac-12.1.txt ../frac-13.0.txt

- CLDR root data files are checked into $CLDR_SRC/common/uca/
    cp (Unicode Tools UCA generated)/CollationAuxiliary/* $CLDR_SRC/common/uca/

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- run genuca
  $ICU_ROOT/dbg/tools/unicode/c$
    genuca/genuca --hanOrder implicit $ICU_SRC/icu4c && \
    genuca/genuca --hanOrder radical-stroke $ICU_SRC/icu4c
- rebuild ICU4C

* Unihan collators
    https://sites.google.com/site/unicodetools/unihan
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollators
  with VM arguments
    -ea
    -DSVN_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools/trunk
    -DOTHER_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools
    -DUCD_DIR=/usr/local/google/home/mscherer/svn.unitools/trunk/data
    -DCLDR_DIR=/usr/local/google/home/mscherer/cldr/uni/src
    -DUVERSION=13.0.0
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollatorFiles
  with the same arguments
- check CLDR diffs
    cd $CLDR_SRC
    meld common/collation/zh.xml ../Generated/cldr/han/replace/zh.xml
    meld common/transforms/Han-Latin.xml ../Generated/cldr/han/replace/Han-Latin.xml
- copy to CLDR
    cd $CLDR_SRC
    cp ../Generated/cldr/han/replace/zh.xml common/collation/zh.xml
    cp ../Generated/cldr/han/replace/Han-Latin.xml common/transforms/Han-Latin.xml
- run CLDR unit tests, commit to CLDR
- generate ICU zh collation data: run CLDR
    org.unicode.cldr.icu.NewLdml2IcuConverter
  with program arguments
    -t collation
    -s /usr/local/google/home/mscherer/cldr/uni/src/common/collation
    -m /usr/local/google/home/mscherer/cldr/uni/src/common/supplemental
    -d /usr/local/google/home/mscherer/icu/uni/src/icu4c/source/data/coll
    -p /usr/local/google/home/mscherer/icu/uni/src/icu4c/source/data/xml/collation
    zh
  and VM arguments
    -ea
    -DCLDR_DIR=/usr/local/google/home/mscherer/cldr/uni/src
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt66b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt66b
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt66l.dat ./out/icu4j/icudt66b.dat -s ./out/build/icudt66l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt66b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt66b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt66b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt66b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt66b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt66b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt66b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt66b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp -v com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp -v com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp -v com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example, look for
    ~/icu/uni/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt
    in new blocks (Blocks.txt)
  Unicode 13:
    diak 11950..11959 Dives_Akuru

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools are checked in:
  http://www.unicode.org/utility/trac/log/trunk/unicodetools

---------------------------------------------------------------------------- ***

Unicode 12.1 update for ICU 64.2

** This is an abbreviated update with one new character for the new
** Japanese era expected to start on 2019-May-01: U+32FF SQUARE ERA NAME REIWA
https://en.wikipedia.org/wiki/Reiwa_period

http://www.unicode.org/versions/Unicode12.1.0/

ICU-20497 Unicode 12.1

cldrbug 11978: Unicode 12.1

* Command-line environment setup

UNICODE_DATA=~/unidata/uni121/20190403
CLDR_SRC=~/svn.cldr/uni
ICU_ROOT=~/icu/uni
ICU_SRC=$ICU_ROOT/src
ICUDT=icudt64b
ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
    so that the makefiles see the new version number.
  cd $ICU_ROOT/dbg/icu4c
  ICU_DATA_BUILDTOOL_OPTS=--include_uni_core_data ../../../doconfig-clang-dbg.sh

*** data files & enums & parser code

* download files
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + subfolders: emoji, idna, security, ucd, uca
  + inside ucd: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip

* for manual diffs and for Unicode Tools input data updates:
  remove version suffixes from the file names
    ~$ unidata/desuffixucd.py $UNICODE_DATA
  (see https://sites.google.com/site/unicodetools/inputdata)

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

- cp -v $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; date; make -j7 install &> out.txt ; tail -n 30 out.txt ; date

* update spoof checker UnicodeSet initializers:
    inclusionPat & recommendedPat in uspoof.cpp
    INCLUSION & RECOMMENDED in SpoofChecker.java
- make sure that the Unicode Tools tree contains the latest security data files
- go to Unicode Tools org.unicode.text.tools.RecommendedSetGenerator
- update the hardcoded version number there in the DIRECTORY path
- run the tool (no special environment variables needed)
- copy & paste from the Console output into the .cpp & .java files

* generate normalization data files
  cd $ICU_ROOT/dbg/icu4c
  bin/gennorm2 -o $ICU_SRC/icu4c/source/common/norm2_nfc_data.h -s $ICU4C_UNIDATA/norm2 nfc.txt --csource
  bin/gennorm2 -o $ICU4C_DATA_IN/nfc.nrm     -s $ICU4C_UNIDATA/norm2 nfc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc.nrm    -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc_cf.nrm -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/uts46.nrm   -s $ICU4C_UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install &> out.txt ; tail -n 30 out.txt ; date

* build Unicode tools using CMake+make

$ICU_SRC/tools/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /usr/local/google/home/mscherer/icu/mine/inst/icu4c)
# Location of the ICU4C source tree.
set(ICU4C_SRC_DIR /usr/local/google/home/mscherer/icu/uni/src/icu4c)

  $ICU_ROOT/dbg$
    mkdir -p tools/unicode/c
    cd tools/unicode/c

  $ICU_ROOT/dbg/tools/unicode/c$
    cmake ../../../../src/tools/unicode/c
    make

* generate core properties data files
  $ICU_ROOT/dbg/tools/unicode/c$
    genprops/genprops $ICU_SRC/icu4c
    genuca/genuca --hanOrder implicit $ICU_SRC/icu4c && \
    genuca/genuca --hanOrder radical-stroke $ICU_SRC/icu4c
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..12.1: U+2260, U+226E, U+226F
- nothing new in this Unicode version, no test file to update

* run & fix ICU4C tests
- Andy handles RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools, see
    https://sites.google.com/site/unicodetools/home#TOC-UCA
  diff the main mapping file, look for bad changes
  (for example, more bytes per weight for common characters)
    ~/svn.unitools/trunk$ sed -r -f ~/svn.cldr/uni/tools/scripts/uca/blankweights.sed ../Generated/UCA/12.1.0/CollationAuxiliary/FractionalUCA.txt > ../frac-12.1.txt
    ~/svn.unitools/trunk$ meld ../frac-12.txt ../frac-12.1.txt

- CLDR root data files are checked into $CLDR_SRC/common/uca/
    cp (Unicode Tools UCA generated)/CollationAuxiliary/* $CLDR_SRC/common/uca/

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp -v $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp -v $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp -v $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp -v $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp -v $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- run genuca, see command line above
- rebuild ICU4C

* Unihan collators
    https://sites.google.com/site/unicodetools/unihan
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollators
  with VM arguments
    -ea
    -DSVN_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools/trunk
    -DOTHER_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools
    -DUCD_DIR=/usr/local/google/home/mscherer/svn.unitools/trunk/data
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni
    -DUVERSION=12.1.0
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollatorFiles
  with the same arguments
- check CLDR diffs
    cd $CLDR_SRC
    meld common/collation/zh.xml ../Generated/cldr/han/replace/zh.xml
    meld common/transforms/Han-Latin.xml ../Generated/cldr/han/replace/Han-Latin.xml
- copy to CLDR
    cd $CLDR_SRC
    cp ../Generated/cldr/han/replace/zh.xml common/collation/zh.xml
    cp ../Generated/cldr/han/replace/Han-Latin.xml common/transforms/Han-Latin.xml
- run CLDR unit tests, commit to CLDR
- generate ICU zh collation data: run CLDR
    org.unicode.cldr.icu.NewLdml2IcuConverter
  with program arguments
    -t collation
    -s /usr/local/google/home/mscherer/svn.cldr/uni/common/collation
    -m /usr/local/google/home/mscherer/svn.cldr/uni/common/supplemental
    -d /usr/local/google/home/mscherer/icu/uni/src/icu4c/source/data/coll
    -p /usr/local/google/home/mscherer/icu/uni/src/icu4c/source/data/xml/collation
    zh
  and VM arguments
    -ea
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    make[1]: Entering directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt64b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt64b
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt64l.dat ./out/icu4j/icudt64b.dat -s ./out/build/icudt64l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt64b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt64b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt64b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt64b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt64b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt64b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt64b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt64b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp -v com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp -v com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp -v com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp -v confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp -v BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp -v $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example, look for
    ~/icu/uni/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt
    in new blocks (Blocks.txt)
  Unicode 12: using Unicode 12 CLDR ticket #11478
    hmnp 1E140..1E149 Nyiakeng_Puachue_Hmong
    wcho 1E2F0..1E2F9 Wancho
  Unicode 11: using Unicode 11 CLDR ticket #10978
    rohg 10D30..10D39 Hanifi_Rohingya
    gong 11DA0..11DA9 Gunjala_Gondi
  Earlier: CLDR tickets specific to adding new numbering systems.
  Unicode 10: http://unicode.org/cldr/trac/ticket/10219
  Unicode 9: http://unicode.org/cldr/trac/ticket/9692

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools are checked in:
  http://www.unicode.org/utility/trac/log/trunk/unicodetools

---------------------------------------------------------------------------- ***

Unicode 12.0 update for ICU 64

http://www.unicode.org/versions/Unicode12.0.0/
http://unicode.org/versions/beta-12.0.0.html
https://www.unicode.org/review/pri389/
http://www.unicode.org/reports/uax-proposed-updates.html
http://www.unicode.org/reports/tr44/tr44-23.html

ICU-20203 Unicode 12

ICU-20111 move text layout properties data into a data file

cldrbug 11478: Unicode 12
Accidentally used ^/trunk instead of ^/branches/markus/uni12

* Command-line environment setup

UNICODE_DATA=~/unidata/uni12/20190309
CLDR_SRC=~/svn.cldr/uni
ICU_ROOT=~/icu/uni
ICU_SRC=$ICU_ROOT/src
ICUDT=icudt63b
ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
  so that the makefiles see the new version number.

*** data files & enums & parser code

* download files
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + subfolders: emoji, idna, security, ucd, uca
  + inside ucd: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip

* for manual diffs and for Unicode Tools input data updates:
  remove version suffixes from the file names
    ~$ unidata/desuffixucd.py $UNICODE_DATA
  (see https://sites.google.com/site/unicodetools/inputdata)

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

- cp $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; date; make -j7 install &> out.txt ; tail -n 30 out.txt ; date

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values:
    [(u'blk', set([u'Symbols_And_Pictographs_Ext_A', u'Elymaic',
        u'Ottoman_Siyaq_Numbers', u'Nandinagari', u'Nyiakeng_Puachue_Hmong',
        u'Small_Kana_Ext', u'Egyptian_Hieroglyph_Format_Controls', u'Wancho', u'Tamil_Sup'])),
    (u'sc', set([u'Nand', u'Wcho', u'Elym', u'Hmnp']))]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    blk; Egyptian_Hieroglyph_Format_Controls; Egyptian_Hieroglyph_Format_Controls
    blk; Elymaic                          ; Elymaic
    blk; Nandinagari                      ; Nandinagari
    blk; Nyiakeng_Puachue_Hmong           ; Nyiakeng_Puachue_Hmong
    blk; Ottoman_Siyaq_Numbers            ; Ottoman_Siyaq_Numbers
    blk; Small_Kana_Ext                   ; Small_Kana_Extension
    blk; Symbols_And_Pictographs_Ext_A    ; Symbols_And_Pictographs_Extended_A
    blk; Tamil_Sup                        ; Tamil_Supplement
    blk; Wancho                           ; Wancho
  -> add to uchar.h
    use long property names for enum constants,
    for the trailing comment get the block start code point: diff old & new Blocks.txt
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \3

    sc ; Elym                             ; Elymaic
    sc ; Hmnp                             ; Nyiakeng_Puachue_Hmong
    sc ; Nand                             ; Nandinagari
    sc ; Wcho                             ; Wancho
  -> uscript.h & com.ibm.icu.lang.UScript
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* update spoof checker UnicodeSet initializers:
    inclusionPat & recommendedPat in uspoof.cpp
    INCLUSION & RECOMMENDED in SpoofChecker.java
- make sure that the Unicode Tools tree contains the latest security data files
- go to Unicode Tools org.unicode.text.tools.RecommendedSetGenerator
- update the hardcoded version number there in the DIRECTORY path
- run the tool (no special environment variables needed)
- copy & paste from the Console output into the .cpp & .java files

* generate normalization data files
  cd $ICU_ROOT/dbg/icu4c
  bin/gennorm2 -o $ICU_SRC/icu4c/source/common/norm2_nfc_data.h -s $ICU4C_UNIDATA/norm2 nfc.txt --csource
  bin/gennorm2 -o $ICU4C_DATA_IN/nfc.nrm     -s $ICU4C_UNIDATA/norm2 nfc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc.nrm    -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc_cf.nrm -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/uts46.nrm   -s $ICU4C_UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install &> out.txt ; tail -n 30 out.txt ; date

* build Unicode tools using CMake+make

$ICU_SRC/tools/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /usr/local/google/home/mscherer/icu/mine/inst/icu4c)
# Location of the ICU4C source tree.
set(ICU4C_SRC_DIR /usr/local/google/home/mscherer/icu/uni/src/icu4c)

  $ICU_ROOT/dbg$
    mkdir -p tools/unicode/c
    cd tools/unicode/c

  $ICU_ROOT/dbg/tools/unicode/c$
    cmake ../../../../src/tools/unicode/c
    make

* generate core properties data files
  $ICU_ROOT/dbg/tools/unicode/c$
    genprops/genprops $ICU_SRC/icu4c
    genuca/genuca --hanOrder implicit $ICU_SRC/icu4c && \
    genuca/genuca --hanOrder radical-stroke $ICU_SRC/icu4c
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..12.0: U+2260, U+226E, U+226F
- nothing new in this Unicode version, no test file to update

* run & fix ICU4C tests
- update test of default bidi classes:
  Bidi range \U0001ED00-\U0001ED4F changes default from R to AL,
  see diffs in DerivedBidiClass.txt
  + /tsutil/cucdtst/TestUnicodeData enumDefaultsRange() defaultBidi[]
  + UCharacterTest.java TestIteration() defaultBidi[]
- Andy handles RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools, see
    https://sites.google.com/site/unicodetools/home#TOC-UCA
  diff the main mapping file, look for bad changes
  (for example, more bytes per weight for common characters)
    ~/svn.unitools/trunk$ sed -r -f ~/svn.cldr/uni/tools/scripts/uca/blankweights.sed ../Generated/UCA/12.0.0/CollationAuxiliary/FractionalUCA.txt > ../frac-12.txt
    ~/svn.unitools/trunk$ meld ../frac-11.txt ../frac-12.txt

- CLDR root data files are checked into $CLDR_SRC/common/uca/
    cp (Unicode Tools UCA generated)/CollationAuxiliary/* $CLDR_SRC/common/uca/

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- run genuca, see command line above;
  deal with
    Error: Unknown script for first-primary sample character U+119CE on line 29233 of /usr/local/google/home/mscherer/icu/uni/src/icu4c/source/data/unidata/FractionalUCA.txt:
    FDD1 119CE;	[71 CD 02, 05, 05]	# Nandinagari first primary (compressible)
        (add the character to genuca.cpp sampleCharsToScripts[])
  + This time, I added code to genuca.cpp to use uscript_getSampleUnicodeString(script)
    and cache its values.
    Works as long as the script metadata is updated before the collation data.
- rebuild ICU4C

* Unihan collators
    https://sites.google.com/site/unicodetools/unihan
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollators
  with VM arguments
    -ea
    -DSVN_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools/trunk
    -DOTHER_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools
    -DUCD_DIR=/usr/local/google/home/mscherer/svn.unitools/trunk/data
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni
    -DUVERSION=12.0.0
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollatorFiles
  with the same arguments
- check CLDR diffs
    cd $CLDR_SRC
    meld common/collation/zh.xml ../Generated/cldr/han/replace/zh.xml
    meld common/transforms/Han-Latin.xml ../Generated/cldr/han/replace/Han-Latin.xml
- copy to CLDR
    cd $CLDR_SRC
    cp ../Generated/cldr/han/replace/zh.xml common/collation/zh.xml
    cp ../Generated/cldr/han/replace/Han-Latin.xml common/transforms/Han-Latin.xml
- run CLDR unit tests, commit to CLDR
- generate ICU zh collation data: run CLDR
    org.unicode.cldr.icu.NewLdml2IcuConverter
  with program arguments
    -t collation
    -s /usr/local/google/home/mscherer/svn.cldr/uni/common/collation
    -m /usr/local/google/home/mscherer/svn.cldr/uni/common/supplemental
    -d /usr/local/google/home/mscherer/icu/uni/src/icu4c/source/data/coll
    -p /usr/local/google/home/mscherer/icu/uni/src/icu4c/source/data/xml/collation
    zh
  and VM arguments
    -ea
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt63l
    echo timestamp > uni-core-data
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt63b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt63b
    echo pnames.icu uprops.icu ucase.icu ubidi.icu nfc.nrm > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt63l.dat ./out/icu4j/icudt63b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt63l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt63b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt63b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt63b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt63b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt63b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt63b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt63b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt63b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/icu/uni/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp -v com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp -v com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp -v com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp -v com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  for example, look for
    ~/icu/uni/src$ egrep ';gc=Nd.+;nv=4' icu4c/source/data/unidata/ppucd.txt
    in new blocks (Blocks.txt)
  Unicode 12: using Unicode 12 CLDR ticket #11478
    hmnp 1E140..1E149 Nyiakeng_Puachue_Hmong
    wcho 1E2F0..1E2F9 Wancho
  Unicode 11: using Unicode 11 CLDR ticket #10978
    rohg 10D30..10D39 Hanifi_Rohingya
    gong 11DA0..11DA9 Gunjala_Gondi
  Earlier: CLDR tickets specific to adding new numbering systems.
  Unicode 10: http://unicode.org/cldr/trac/ticket/10219
  Unicode 9: http://unicode.org/cldr/trac/ticket/9692

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools are checked in:
  http://www.unicode.org/utility/trac/log/trunk/unicodetools

---------------------------------------------------------------------------- ***

ICU 63 addition of ICU support of text layout properties InPC, InSC, vo

* Command-line environment setup

UNICODE_DATA=~/unidata/uni11/20180609
CLDR_SRC=~/svn.cldr/uni
ICU_ROOT=~/icu/mine
ICU_SRC=$ICU_ROOT/src
ICUDT=icudt62b
ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** Links

https://unicode-org.atlassian.net/browse/ICU-8966 InPC & InSC
https://unicode-org.atlassian.net/browse/ICU-12850 vo

*** data files & enums & parser code

* API additions
- for each of the three new enumerated properties
  + uchar.h: add the enum UProperty constant UCHAR_<long prop name>
  + uchar.h: update UCHAR_INT_LIMIT
  + uchar.h: add the enum U<long prop name>
    with constants U_<short prop name>_<long value name>
  + UProperty.java: add the constant <long prop name>
  + UProperty.java: update INT_LIMIT
  + UCharacter.java: add the interface <long prop name>
    with constants <long value name>

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + It also writes tools/unicode/c/genprops/pnames_data.h with property and value
    names and aliases.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

* preparseucd.py changes
- add new property short names (uppercase) to _prop_and_value_re
  so that ParseUCharHeader() parses the new enum constants

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install > out.txt 2>&1 ; tail -n 30 out.txt ; date

* build Unicode tools using CMake+make

$ICU_SRC/tools/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /usr/local/google/home/mscherer/icu/mine/inst/icu4c)
# Location of the ICU4C source tree.
set(ICU4C_SRC_DIR /usr/local/google/home/mscherer/icu/mine/src/icu4c)

  $ICU_ROOT/dbg$
    mkdir -p tools/unicode/c
    cd tools/unicode/c

  $ICU_ROOT/dbg/tools/unicode/c$
    cmake ../../../../../src/tools/unicode/c
    make

* generate core properties data files
  $ICU_ROOT/dbg/tools/unicode/c$
    genprops/genprops $ICU_SRC/icu4c
- rebuild ICU (make install) & tools

* write data for runtime, hardcoded for now
- add genprops/layoutpropsbuilder.cpp with pieces from sibling files
- generate new icu4c/source/common/ulayout_props_data.h
- for each of the three new enumerated properties
  + int property max value
  + small, 8-bit UCPTrie
    (A small 16-bit trie with bit fields for these three properties
    is very nearly the same size as the sum of the three.)

* wire into C++
- uprops.cpp: #include ulayout_props_data.h
- uprops.cpp: add getInPC() etc. functions
- uprops.cpp: add lines to intProps[], include max values
- uprops.h: add UPropertySource constants
- uprops.cpp: add uprops_addPropertyStarts(src)
- uniset_props.cpp: add to UnicodeSet_initInclusion()
- intltest/ucdtest.cpp: write unit tests

* update Java data files
- refresh just the pnames.icu file with the new property [value] names, just to be safe
- see $ICU_SRC/icu4c/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    cp com/ibm/icu/impl/data/$ICUDT/pnames.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* wire into Java
- UCharacterProperty.java: add new SRC_INPC etc. constants as in C++
- UCharacterProperty.java: for each new property
  + create a nested class to hold its CodePointTrie
  + initialize it from a string literal
  + paste in the initializer printed by genprops
  + add a new IntProperty object to the intProps[] array
  + use the correct max int value for each property, also printed by genprops
- UCharacterProperty.java: add ulayout_addPropertyStarts(src, set)
- UnicodeSet.java: add to getInclusions()
- UCharacterTest.java: write unit tests

---------------------------------------------------------------------------- ***

Unicode 11.0 update for ICU 62

http://www.unicode.org/versions/Unicode11.0.0/
http://unicode.org/versions/beta-11.0.0.html
https://www.unicode.org/review/pri372/
http://www.unicode.org/reports/uax-proposed-updates.html
http://www.unicode.org/reports/tr44/tr44-21.html

* Command-line environment setup

UNICODE_DATA=~/unidata/uni11/20180521
CLDR_SRC=~/svn.cldr/uni
ICU_ROOT=~/svn.icu/uni
ICU_SRC=$ICU_ROOT/src
ICUDT=icudt61b
ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** ICU Trac

- ticket:13630: Unicode 11
- ^/branches/markus/uni11

*** CLDR Trac

- cldrbug 10978: Unicode 11
- ^/branches/markus/uni11

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
  so that the makefiles see the new version number.

*** data files & enums & parser code

* download files
- mkdir -p $UNICODE_DATA
- download Unicode files into $UNICODE_DATA
  + subfolders: emoji, idna, security, ucd, uca
  + inside ucd: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip

* for manual diffs and for Unicode Tools input data updates:
  remove version suffixes from the file names
    ~$ unidata/desuffixucd.py $UNICODE_DATA
  (see https://sites.google.com/site/unicodetools/inputdata)

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

- cp $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install > out.txt 2>&1 ; tail -n 30 out.txt ; date

* preparseucd.py changes
- fix other errors
    NameError: unknown property Extended_Pictographic
  -> add Extended_Pictographic binary property
  -> add new short names for all Emoji properties

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values:
    [(u'blk', set([u'Georgian_Ext', u'Hanifi_Rohingya', u'Medefaidrin', u'Sogdian', u'Makasar',
                   u'Old_Sogdian', u'Dogra', u'Gunjala_Gondi', u'Chess_Symbols', u'Mayan_Numerals',
                   u'Indic_Siyaq_Numbers'])),
     (u'jg', set([u'Hanifi_Rohingya_Kinna_Ya', u'Hanifi_Rohingya_Pa'])),
     (u'sc', set([u'Medf', u'Sogd', u'Dogr', u'Rohg', u'Maka', u'Sogo', u'Gong'])),
     (u'GCB', set([u'LinkC', u'Virama'])),
     (u'WB', set([u'WSegSpace']))]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    blk; Chess_Symbols                    ; Chess_Symbols
    blk; Dogra                            ; Dogra
    blk; Georgian_Ext                     ; Georgian_Extended
    blk; Gunjala_Gondi                    ; Gunjala_Gondi
    blk; Hanifi_Rohingya                  ; Hanifi_Rohingya
    blk; Indic_Siyaq_Numbers              ; Indic_Siyaq_Numbers
    blk; Makasar                          ; Makasar
    blk; Mayan_Numerals                   ; Mayan_Numerals
    blk; Medefaidrin                      ; Medefaidrin
    blk; Old_Sogdian                      ; Old_Sogdian
    blk; Sogdian                          ; Sogdian
  -> add to uchar.h
    use long property names for enum constants,
    for the trailing comment get the block start code point: diff old & new Blocks.txt
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2

    GCB; LinkC                            ; LinkingConsonant
    GCB; Virama                           ; Virama
  -> uchar.h & UCharacter.GraphemeClusterBreak
  -> these two later removed again: http://www.unicode.org/L2/L2018/18115.htm#155-A76

    InSC; Consonant_Initial_Postfixed     ; Consonant_Initial_Postfixed
  -> ignore: ICU does not yet support this property

    jg ; Hanifi_Rohingya_Kinna_Ya         ; Hanifi_Rohingya_Kinna_Ya
    jg ; Hanifi_Rohingya_Pa               ; Hanifi_Rohingya_Pa
  -> uchar.h & UCharacter.JoiningGroup

    sc ; Dogr                             ; Dogra
    sc ; Gong                             ; Gunjala_Gondi
    sc ; Maka                             ; Makasar
    sc ; Medf                             ; Medefaidrin
    sc ; Rohg                             ; Hanifi_Rohingya
    sc ; Sogd                             ; Sogdian
    sc ; Sogo                             ; Old_Sogdian
  -> uscript.h & com.ibm.icu.lang.UScript
  -> Nushu had been added already
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

    WB ; WSegSpace                        ; WSegSpace
  -> uchar.h & UCharacter.WordBreak

* New short names for emoji properties
- see UTS #51
- short names set in preparseucd.py

* New properties
- boolean emoji property Extended_Pictographic
  -> added in preparseucd.py
  -> uchar.h & UProperty.java
- misc. property Equivalent_Unified_Ideograph (EqUIdeo)
  as shown in PropertyValueAliases.txt
  -> ignore for now

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* update spoof checker UnicodeSet initializers:
    inclusionPat & recommendedPat in uspoof.cpp
    INCLUSION & RECOMMENDED in SpoofChecker.java
- make sure that the Unicode Tools tree contains the latest security data files
- go to Unicode Tools org.unicode.text.tools.RecommendedSetGenerator
- update the hardcoded version number there in the DIRECTORY path
- run the tool (no special environment variables needed)
- copy & paste from the Console output into the .cpp & .java files

* generate normalization data files
  cd $ICU_ROOT/dbg/icu4c
  bin/gennorm2 -o $ICU_SRC/icu4c/source/common/norm2_nfc_data.h -s $ICU4C_UNIDATA/norm2 nfc.txt --csource
  bin/gennorm2 -o $ICU4C_DATA_IN/nfc.nrm     -s $ICU4C_UNIDATA/norm2 nfc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc.nrm    -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc_cf.nrm -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/uts46.nrm   -s $ICU4C_UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install > out.txt 2>&1 ; tail -n 30 out.txt ; date

* build Unicode tools using CMake+make

$ICU_SRC/tools/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /usr/local/google/home/mscherer/svn.icu/trunk/inst/icu4c)
# Location of the ICU4C source tree.
set(ICU4C_SRC_DIR /usr/local/google/home/mscherer/svn.icu/uni/src/icu4c)

  $ICU_ROOT/dbg$
    mkdir -p tools/unicode/c
    cd tools/unicode/c

  $ICU_ROOT/dbg/tools/unicode/c$
    cmake ../../../../src/tools/unicode/c
    make

* generate core properties data files
  $ICU_ROOT/dbg/tools/unicode/c$
    genprops/genprops $ICU_SRC/icu4c
    genuca/genuca --hanOrder implicit $ICU_SRC/icu4c
    genuca/genuca --hanOrder radical-stroke $ICU_SRC/icu4c
- rebuild ICU (make install) & tools

* Fix case props
    genprops error: casepropsbuilder: too many exceptions words
    genprops error: failure finalizing the data - U_BUFFER_OVERFLOW_ERROR
- With the addition of Georgian Mtavruli capital letters,
  there are now too many simple case mappings with big mapping deltas
  that yield uncompressible exceptions.
- Changing the data structure (now formatVersion 4),
  adding one bit for no-simple-case-folding (for Cherokee), and
  one optional slot for a big delta (for most faraway mappings),
  together with another bit for whether that is negative.
  This makes most Cherokee & Georgian etc. case mappings compressible,
  reducing the number of exceptions words.
- Further changes to gain one more bit for the exceptions index,
  for future growth. Details see casepropsbuilder.cpp.

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..11.0: U+2260, U+226E, U+226F
- nothing new in this Unicode version, no test file to update

* run & fix ICU4C tests
- Andy handles RBBI & spoof check test failures

- Errors in char.txt, word.txt, word_POSIX.txt like
    createRuleBasedBreakIterator: ICU Error "U_BRK_RULE_EMPTY_SET"  at line 46, column 16
  because \p{Grapheme_Cluster_Break = EBG} and \p{Word_Break = EBG} are empty.
  -> Temporary(!) workaround: Add an arbitrary code point to these sets to make them
     not empty, just to get ICU building.
  -> Intermediate workaround: Remove $E_Base_GAZ and other now-unused variables
     and properties together with the rules that used them (GB 10, WB 14).
  -> Andy adjusts the rule sets further to sync with
     Unicode 11 grapheme, word, and line break spec changes.

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools, see
    https://sites.google.com/site/unicodetools/home#TOC-UCA
  diff the main mapping file, look for bad changes
  (for example, more bytes per weight for common characters)
    ~/svn.unitools/trunk$ sed -r -f ~/svn.cldr/uni/tools/scripts/uca/blankweights.sed ../Generated/uca/11.0.0/CollationAuxiliary/FractionalUCA.txt > ../frac-11.txt
    ~/svn.unitools/trunk$ meld ../frac-10.txt ../frac-11.txt

- CLDR root data files are checked into $CLDR_SRC/common/uca/
    cp (Unicode Tools UCA generated)/CollationAuxiliary/* $CLDR_SRC/common/uca/

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- run genuca, see command line above;
  deal with
    Error: Unknown script for first-primary sample character U+1180B on line 28649 of /usr/local/google/home/mscherer/svn.icu/uni/src/icu4c/source/data/unidata/FractionalUCA.txt:
    FDD1 1180B;	[71 CC 02, 05, 05]	# Dogra first primary (compressible)
        (add the character to genuca.cpp sampleCharsToScripts[])
  + look up the USCRIPT_ code for the new sample characters
    (should be obvious from the comment in the error output)
  + *add* mappings to sampleCharsToScripts[], do not replace them
    (in case the script sample characters flip-flop)
  + insert new scripts in DUCET script order, see the top_byte table
    at the beginning of FractionalUCA.txt
- rebuild ICU4C

* Unihan collators
    https://sites.google.com/site/unicodetools/unihan
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollators
  with VM arguments
    -ea
    -DSVN_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools/trunk
    -DOTHER_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools
    -DUCD_DIR=/usr/local/google/home/mscherer/svn.unitools/trunk/data
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni
    -DUVERSION=11.0.0
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollatorFiles
  with the same arguments
- check CLDR diffs
    cd $CLDR_SRC
    meld common/collation/zh.xml ../Generated/cldr/han/replace/zh.xml
    meld common/transforms/Han-Latin.xml ../Generated/cldr/han/replace/Han-Latin.xml
- copy to CLDR
    cd $CLDR_SRC
    cp ../Generated/cldr/han/replace/zh.xml common/collation/zh.xml
    cp ../Generated/cldr/han/replace/Han-Latin.xml common/transforms/Han-Latin.xml
- run CLDR unit tests, commit to CLDR
- generate ICU zh collation data: run CLDR
    org.unicode.cldr.icu.NewLdml2IcuConverter
  with program arguments
    -t collation
    -s /usr/local/google/home/mscherer/svn.cldr/uni/common/collation
    -m /usr/local/google/home/mscherer/svn.cldr/uni/common/supplemental
    -d /usr/local/google/home/mscherer/svn.icu/uni/src/icu4c/source/data/coll
    -p /usr/local/google/home/mscherer/svn.icu/uni/src/icu4c/source/data/xml/collation
    zh
  and VM arguments
    -ea
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt61l
    echo timestamp > uni-core-data
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt61b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt61b
    echo pnames.icu uprops.icu ucase.icu ubidi.icu nfc.nrm > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt61l.dat ./out/icu4j/icudt61b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt61l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt61b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt61b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt61b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt61b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt61b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt61b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt61b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt61b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory '/usr/local/google/home/mscherer/svn.icu/uni/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp BidiCharacterTest.txt BidiTest.txt IdnaTestV2.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and add to CLDR
  Unicode 11: using Unicode 11 CLDR ticket #10978
    rohg 10D30..10D39 Hanifi_Rohingya
    gong 11DA0..11DA9 Gunjala_Gondi
  Earlier: CLDR tickets specific to adding new numbering systems.
  Unicode 10: http://unicode.org/cldr/trac/ticket/10219
  Unicode 9: http://unicode.org/cldr/trac/ticket/9692

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools are checked in:
  http://www.unicode.org/utility/trac/log/trunk/unicodetools

---------------------------------------------------------------------------- ***

Unicode 10.0 update for ICU 60

http://www.unicode.org/versions/Unicode10.0.0/
http://www.unicode.org/versions/beta-10.0.0.html
http://blog.unicode.org/2017/03/unicode-100-beta-review.html
http://www.unicode.org/review/pri350/
http://www.unicode.org/reports/uax-proposed-updates.html
http://www.unicode.org/reports/tr44/tr44-19.html

* Command-line environment setup

UNICODE_DATA=~/unidata/uni10/20170605
CLDR_SRC=~/svn.cldr/uni10
ICU_ROOT=~/svn.icu/uni10
ICU_SRC=$ICU_ROOT/src
ICUDT=icudt60b
ICU4C_DATA_IN=$ICU_SRC/icu4c/source/data/in
ICU4C_UNIDATA=$ICU_SRC/icu4c/source/data/unidata
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/icu4c/lib

*** ICU Trac

- ticket:12985: Unicode 10
- ticket:13061: undo hacks from emoji 5.0 update
- ticket:13062: add Emoji_Component property
- ^/branches/markus/uni10

*** CLDR Trac

- cldrbug 10055: Unicode 10
- cldrbug 9882: Unicode 10 script metadata
- cldrbug 10219: numbering systems for Unicode 10

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
  so that the makefiles see the new version number.

*** data files & enums & parser code

* download files
- mkdir -p $UNICODE_DATA
- download Unicode 10.0 files into $UNICODE_DATA
  + subfolders: ucd, uca, idna, security
  + inside ucd: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip
- download emoji 5.0 files into $UNICODE_DATA/emoji

* for manual diffs: remove version suffixes from the file names
  ~$ unidata/desuffixucd.py $UNICODE_DATA
  (see https://sites.google.com/site/unicodetools/inputdata)

* process and/or copy files
- $ICU_SRC/tools/unicode$ py/preparseucd.py $UNICODE_DATA $ICU_SRC
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
  + For debugging, and tweaking how ppucd.txt is written,
    the tool has an --only_ppucd option:
    py/preparseucd.py $UNICODE_DATA --only_ppucd path/to/ppucd/outputfile

- cp $UNICODE_DATA/security/confusables.txt $ICU4C_UNIDATA

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install > out.txt 2>&1 ; tail -n 30 out.txt ; date

* preparseucd.py changes
- remove or add new Unicode scripts from/to the
  only-in-ISO-15924 list according to the error messages:
    ValueError: remove ['Nshu'] from _scripts_only_in_iso15924
  -> adjust _scripts_only_in_iso15924 as indicated
- fix other errors
    Exception: no default values (@missing lines) for some Catalog or Enumerated properties: [u'vo'] 
  -> add vo=Vertical_Orientation to _ignored_properties
  -> later removed again, parsing the file, even though we do not yet store data for runtime use

* new constants for new property values
- preparseucd.py error:
    ValueError: missing uchar.h enum constants for some property values:
    [(u'blk', set([u'Zanabazar_Square', u'Nushu', u'CJK_Ext_F',
                   u'Kana_Ext_A', u'Syriac_Sup', u'Masaram_Gondi', u'Soyombo'])),
     (u'jg', set([u'Malayalam_Bha', u'Malayalam_Llla', u'Malayalam_Nya', u'Malayalam_Lla',
                  u'Malayalam_Nga', u'Malayalam_Ssa', u'Malayalam_Tta', u'Malayalam_Ra',
                  u'Malayalam_Nna', u'Malayalam_Ja', u'Malayalam_Nnna'])),
     (u'sc', set([u'Soyo', u'Gonm', u'Zanb']))]
  = PropertyValueAliases.txt new property values (diff old & new .txt files)
    blk; CJK_Ext_F                        ; CJK_Unified_Ideographs_Extension_F
    blk; Kana_Ext_A                       ; Kana_Extended_A
    blk; Masaram_Gondi                    ; Masaram_Gondi
    blk; Nushu                            ; Nushu
    blk; Soyombo                          ; Soyombo
    blk; Syriac_Sup                       ; Syriac_Supplement
    blk; Zanabazar_Square                 ; Zanabazar_Square
  -> add to uchar.h
    use long property names for enum constants,
    for the trailing comment get the block start code point: diff old & new Blocks.txt
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2

    jg ; Malayalam_Bha                    ; Malayalam_Bha
    jg ; Malayalam_Ja                     ; Malayalam_Ja
    jg ; Malayalam_Lla                    ; Malayalam_Lla
    jg ; Malayalam_Llla                   ; Malayalam_Llla
    jg ; Malayalam_Nga                    ; Malayalam_Nga
    jg ; Malayalam_Nna                    ; Malayalam_Nna
    jg ; Malayalam_Nnna                   ; Malayalam_Nnna
    jg ; Malayalam_Nya                    ; Malayalam_Nya
    jg ; Malayalam_Ra                     ; Malayalam_Ra
    jg ; Malayalam_Ssa                    ; Malayalam_Ssa
    jg ; Malayalam_Tta                    ; Malayalam_Tta
  -> uchar.h & UCharacter.JoiningGroup

    sc ; Gonm                             ; Masaram_Gondi
    sc ; Nshu                             ; Nushu
    sc ; Soyo                             ; Soyombo
    sc ; Zanb                             ; Zanabazar_Square
  -> uscript.h & com.ibm.icu.lang.UScript
  -> Nushu had been added already
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

* New properties as shown in PropertyValueAliases.txt changes
- boolean Emoji_Component from emoji 5
  -> uchar.h & UProperty.java
- boolean
    # Regional_Indicator (RI)

    RI ; N                                ; No                               ; F                                ; False
    RI ; Y                                ; Yes                              ; T                                ; True
  -> uchar.h & UProperty.java
  -> single immutable range, to be hardcoded
- boolean
    # Prepended_Concatenation_Mark (PCM)

    PCM; N                                ; No                               ; F                                ; False
    PCM; Y                                ; Yes                              ; T                                ; True
  -> was new in Unicode 9
  -> uchar.h & UProperty.java
- enumerated
    # Vertical_Orientation (vo)

    vo ; R                                ; Rotated
    vo ; Tr                               ; Transformed_Rotated
    vo ; Tu                               ; Transformed_Upright
    vo ; U                                ; Upright
  -> only pre-parsed for now, but not yet stored for runtime use

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  $ICU_SRC/tools/unicode$ py/parsescriptmetadata.py $ICU_SRC/icu4c/source/common/unicode/uscript.h $CLDR_SRC/common/properties/scriptMetadata.txt

* generate normalization data files
  cd $ICU_ROOT/dbg/icu4c
  bin/gennorm2 -o $ICU_SRC/icu4c/source/common/norm2_nfc_data.h -s $ICU4C_UNIDATA/norm2 nfc.txt --csource
  bin/gennorm2 -o $ICU4C_DATA_IN/nfc.nrm     -s $ICU4C_UNIDATA/norm2 nfc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc.nrm    -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/nfkc_cf.nrm -s $ICU4C_UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
  bin/gennorm2 -o $ICU4C_DATA_IN/uts46.nrm   -s $ICU4C_UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install > out.txt 2>&1 ; tail -n 30 out.txt ; date

* build Unicode tools using CMake+make

$ICU_SRC/tools/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /usr/local/google/home/mscherer/svn.icu/trunk/inst/icu4c)
# Location of the ICU4C source tree.
set(ICU4C_SRC_DIR /usr/local/google/home/mscherer/svn.icu/uni10/src/icu4c)

  $ICU_ROOT/dbg/tools/unicode/c$
    cmake ../../../../src/tools/unicode/c
    make

* generate core properties data files
  $ICU_ROOT/dbg/tools/unicode/c$
    genprops/genprops $ICU_SRC/icu4c
    genuca/genuca --hanOrder implicit $ICU_SRC/icu4c
    genuca/genuca --hanOrder radical-stroke $ICU_SRC/icu4c
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..10.0: U+2260, U+226E, U+226F
- nothing new in this Unicode version, no test file to update

* run & fix ICU4C tests
- Andy handles RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools, see
  https://sites.google.com/site/unicodetools/home#TOC-UCA
- CLDR root data files are checked into $CLDR_SRC/common/uca/
    cp (Unicode Tools UCA generated)/CollationAuxiliary/* $CLDR_SRC/common/uca/

- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp $CLDR_SRC/common/uca/FractionalUCA_SHORT.txt $ICU4C_UNIDATA/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp $ICU4C_UNIDATA/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp $CLDR_SRC/common/uca/UCA_Rules_SHORT.txt $ICU4C_UNIDATA/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU4C_UNIDATA/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp $CLDR_SRC/common/uca/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp $CLDR_SRC/common/uca/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC/icu4c/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp $ICU_SRC/icu4c/source/test/testdata/CollationTest_*.txt $ICU_SRC/icu4j/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC/icu4c/source/data/coll/root.txt

- run genuca, see command line above;
  deal with
    Error: Unknown script for first-primary sample character U+11D10 on line 28117 of /usr/local/google/home/mscherer/svn.icu/uni10/src/icu4c/source/data/unidata/FractionalUCA.txt:
    FDD1 11D10;     [70 D5 02, 05, 05]      # Masaram_Gondi first primary (compressible)
        (add the character to genuca.cpp sampleCharsToScripts[])
  + look up the USCRIPT_ code for the new sample characters
    (should be obvious from the comment in the error output)
  + *add* mappings to sampleCharsToScripts[], do not replace them
    (in case the script sample characters flip-flop)
  + insert new scripts in DUCET script order, see the top_byte table
    at the beginning of FractionalUCA.txt
- rebuild ICU4C

* Unihan collators
    https://sites.google.com/site/unicodetools/unihan
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollators
  with VM arguments
    -ea
    -DSVN_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools/trunk
    -DOTHER_WORKSPACE=/usr/local/google/home/mscherer/svn.unitools
    -DUCD_DIR=/usr/local/google/home/mscherer/svn.unitools/trunk/data
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni10
    -DUVERSION=10.0.0
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollatorFiles
  with the same arguments
- check CLDR diffs
    cd $CLDR_SRC
    meld common/collation/zh.xml ../Generated/cldr/han/replace/zh.xml
    meld common/transforms/Han-Latin.xml ../Generated/cldr/han/replace/Han-Latin.xml
- copy to CLDR
    cd $CLDR_SRC
    cp ../Generated/cldr/han/replace/zh.xml common/collation/zh.xml
    cp ../Generated/cldr/han/replace/Han-Latin.xml common/transforms/Han-Latin.xml
- run CLDR unit tests, commit to CLDR
- generate ICU zh collation data: run CLDR
    org.unicode.cldr.icu.NewLdml2IcuConverter
  with program arguments
    -t collation
    -s /usr/local/google/home/mscherer/svn.cldr/uni10/common/collation
    -m /usr/local/google/home/mscherer/svn.cldr/uni10/common/supplemental
    -d /usr/local/google/home/mscherer/svn.icu/uni10/src/icu4c/source/data/coll
    -p /usr/local/google/home/mscherer/svn.icu/uni10/src/icu4c/source/data/xml/collation
    zh
  and VM arguments
    -ea
    -DCLDR_DIR=/usr/local/google/home/mscherer/svn.cldr/uni10
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt60l
    echo timestamp > uni-core-data
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt60b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt60b
    echo pnames.icu uprops.icu ucase.icu ubidi.icu nfc.nrm > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt60l.dat ./out/icu4j/icudt60b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt60l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt60b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt60b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt60b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt60b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt60b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt60b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt60b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt60b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/usr/local/google/home/mscherer/svn.icu/uni10/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd $ICU_ROOT/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf $ICU_SRC/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar $ICU_SRC/icu4j/main/shared/data
or
- $ICU_ROOT/dbg/icu4c$ make ICU4J_ROOT=$ICU_SRC/icu4j icu4j-data-install

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC/icu4c/source/data/unidata
    cp confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp BidiCharacterTest.txt BidiTest.txt IdnaTest.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp $UNICODE_DATA/ucd/CompositionExclusions.txt $ICU_SRC/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** CLDR numbering systems
- look for new sets of decimal digits (gc=ND & nv=4) and submit a CLDR ticket
  Unicode 10: http://unicode.org/cldr/trac/ticket/10219
  Unicode 9: http://unicode.org/cldr/trac/ticket/9692

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools are checked in:
  http://www.unicode.org/utility/trac/log/trunk/unicodetools

---------------------------------------------------------------------------- ***

Emoji 5.0 update for ICU 59
- ICU 59 mostly remains on Unicode 9.0
- except updates bidi and segmentation data to Unicode 10 beta

First run of tools on combined icu4c/icu4j/tools trunk after svn repository reorg.

* Command-line environment setup

ICU_ROOT=~/svn.icu/trunk
ICU_SRC_DIR=$ICU_ROOT/src
ICU4C_SRC_DIR=$ICU_SRC_DIR/icu4c
ICUDT=icudt59b
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/lib
SRC_DATA_IN=$ICU4C_SRC_DIR/source/data/in
UNIDATA=$ICU4C_SRC_DIR/source/data/unidata

*** ICU Trac

- ticket:12900: take Emoji 5.0 properties data into ICU 59 once it's released
- changes directly on trunk

*** data files & enums & parser code

* download files

- download Unicode 9.0 files into a uni90e50 folder: ucd, idna, security (skip uca)
- download emoji 5.0 beta files into the same uni90e50 folder
- download Unicode 10.0 beta files: ucd
  + copy Unicode 10 bidi files to the uni90e50/ucd folder:
    BidiBrackets.txt
    BidiCharacterTest.txt
    BidiMirroring.txt
    BidiTest.txt
    extracted/DerivedBidiClass.txt
  + copy Unicode 10 segmentation files to the uni90e50/ucd folder:
    LineBreak.txt
    auxiliary/*

* preparseucd.py changes
- adjust for combined trunks
- write new copyright lines
- ignore new Emoji_Component property for now

* process and/or copy files
- ~/svn.icu/trunk/src/tools/unicode$ py/preparseucd.py ~/unidata/uni90e50/20170322 $ICU_SRC_DIR
  + This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.

- cp ~/unidata/uni90e50/20170322/security/confusables.txt $UNIDATA

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg/icu4c$ echo;echo; make -j7 install > out.txt 2>&1 ; tail -n 30 out.txt ; date

* build Unicode tools using CMake+make

~/svn.icu/trunk/src/tools/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /usr/local/google/home/mscherer/svn.icu/trunk/inst/icu4c)
# Location of the ICU4C source tree.
set(ICU4C_SRC_DIR /usr/local/google/home/mscherer/svn.icu/trunk/src/icu4c)

  ~/svn.icu/trunk/dbg/tools/unicode/c$
    cmake ../../../../src/tools/unicode/c
    make

* generate core properties data files
  ~/svn.icu/trunk/dbg/tools/unicode/c$
    genprops/genprops $ICU4C_SRC_DIR
- rebuild ICU (make install) & tools

* run & fix ICU4C tests
- Andy handles RBBI & spoof check test failures

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/trunk/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt59l
    echo timestamp > uni-core-data
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt59b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt59b
    echo pnames.icu uprops.icu ucase.icu ubidi.icu nfc.nrm > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt59l.dat ./out/icu4j/icudt59b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt59l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt59b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt59b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt59b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt59b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt59b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt59b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt59b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt59b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/usr/local/google/home/mscherer/svn.icu/trunk/dbg/icu4c/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd ~/svn.icu/trunk/dbg/icu4c/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf ~/svn.icu/trunk/src/icu4j/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/trunk/dbg/icu4c$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu/trunk/src/icu4j/main/shared/data
or
- ~/svn.icu/trunk/dbg/icu4c$ make ICU4J_ROOT=~/svn.icu/trunk/src/icu4j icu4j-data-install

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU4C_SRC_DIR/source/data/unidata
    cp confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt ~/svn.icu/trunk/src/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp BidiCharacterTest.txt BidiTest.txt ~/svn.icu/trunk/src/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp ~/unidata/uni90e50/20170322/ucd/CompositionExclusions.txt ~/svn.icu/trunk/src/icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

---------------------------------------------------------------------------- ***

Unicode 9.0 update for ICU 58

* Command-line environment setup

ICU_ROOT=~/svn.icu/trunk
ICU_SRC_DIR=$ICU_ROOT/src
ICUDT=icudt58b
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/lib
SRC_DATA_IN=$ICU_SRC_DIR/source/data/in
UNIDATA=$ICU_SRC_DIR/source/data/unidata

http://www.unicode.org/review/pri323/  -- beta review
http://www.unicode.org/reports/uax-proposed-updates.html
http://www.unicode.org/versions/beta-9.0.0.html
http://www.unicode.org/versions/Unicode9.0.0/
http://www.unicode.org/reports/tr44/tr44-17.html

*** ICU Trac

- ticket:12526: integrate Unicode 9
- C++ ^/icu/branches/markus/uni90, ^/icu/branches/markus/uni90b
- Java ^/icu4j/branches/markus/uni90, ^/icu4j/branches/markus/uni90b

*** CLDR Trac

- cldrbug 9414: UCA 9
- ^/branches/markus/uni90 at r11518 from trunk at r11517

- cldrbug 8745: Unicode 9.0 script metadata

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
  so that the makefiles see the new version number.

*** data files & enums & parser code

* file preparation

- download UCD & IDNA files
- make sure that the Unicode data folder passed into preparseucd.py
  includes a copy of the latest IdnaMappingTable.txt (can be in some subfolder)
- only for manual diffs: remove version suffixes from the file names
  ~/unidata/uni70/20140403$ ../../desuffixucd.py .
  (see https://sites.google.com/site/unicodetools/inputdata)
- only for manual diffs: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip
- ~/svn.icutools/trunk/src/unicode$ py/preparseucd.py ~/unidata/uni90/20160603 $ICU_SRC_DIR ~/svn.icutools/trunk/src
- This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.

- also: from http://unicode.org/Public/security/9.0.0/ download new confusables.txt
  and copy to $UNIDATA
    cp ~/unidata/uni90/20160603/security/confusables.txt $UNIDATA

* preparseucd.py changes
- remove or add new Unicode scripts from/to the
  only-in-ISO-15924 list according to the error messages:
    ValueError: remove ['Tang'] from _scripts_only_in_iso15924
    ValueError: sc = Hanb (uchar.h USCRIPT_HAN_WITH_BOPOMOFO) not in the UCD
    ValueError: sc = Jamo (uchar.h USCRIPT_JAMO) not in the UCD
    ValueError: sc = Zsye (uchar.h USCRIPT_SYMBOLS_EMOJI) not in the UCD
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
- DerivedNumericValues.txt new numeric values
    0D58          ; 0.00625 ; ; 1/160 # No       MALAYALAM FRACTION ONE ONE-HUNDRED-AND-SIXTIETH
    0D59          ; 0.025 ; ; 1/40 # No       MALAYALAM FRACTION ONE FORTIETH
    0D5A          ; 0.0375 ; ; 3/80 # No       MALAYALAM FRACTION THREE EIGHTIETHS
    0D5B          ; 0.05 ; ; 1/20 # No       MALAYALAM FRACTION ONE TWENTIETH
    0D5D          ; 0.15 ; ; 3/20 # No       MALAYALAM FRACTION THREE TWENTIETHS
  -> change uprops.h, corepropsbuilder.cpp/encodeNumericValue(),
     uchar.c, UCharacterProperty.java
     to support a new series of values
- adjust preparseucd.py for Tangut algorithmic names
  in ppucd.txt:
    algnamesrange;17000..187EC;han;CJK UNIFIED IDEOGRAPH-
  ->
    algnamesrange;17000..187EC;han;TANGUT IDEOGRAPH-
- avoid block-compressing most String/Miscellaneous property values,
  triggered by genprops not coping with a multi-code point Case_Folding on
    block;1C80..1C8F;...;Cased;cf=0442;CWCF;...
  keep block-compressing empty-string mappings NFKC_CF="" for tags and variation selectors

* PropertyAliases.txt changes
- 1 new property PCM=Prepended_Concatenation_Mark
  Ignore: Only useful for layout engines.
  Ok to list in ppucd.txt.

* PropertyValueAliases.txt new property values
    blk; Adlam                            ; Adlam
    blk; Bhaiksuki                        ; Bhaiksuki
    blk; Cyrillic_Ext_C                   ; Cyrillic_Extended_C
    blk; Glagolitic_Sup                   ; Glagolitic_Supplement
    blk; Ideographic_Symbols              ; Ideographic_Symbols_And_Punctuation
    blk; Marchen                          ; Marchen
    blk; Mongolian_Sup                    ; Mongolian_Supplement
    blk; Newa                             ; Newa
    blk; Osage                            ; Osage
    blk; Tangut                           ; Tangut
    blk; Tangut_Components                ; Tangut_Components
  -> add to uchar.h
    use long property names for enum constants
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2

    GCB; EB                               ; E_Base
    GCB; EBG                              ; E_Base_GAZ
    GCB; EM                               ; E_Modifier
    GCB; GAZ                              ; Glue_After_Zwj
    GCB; ZWJ                              ; ZWJ
  -> uchar.h & UCharacter.GraphemeClusterBreak

    jg ; African_Feh                      ; African_Feh
    jg ; African_Noon                     ; African_Noon
    jg ; African_Qaf                      ; African_Qaf
  -> uchar.h & UCharacter.JoiningGroup

    lb ; EB                               ; E_Base
    lb ; EM                               ; E_Modifier
    lb ; ZWJ                              ; ZWJ
  -> uchar.h & UCharacter.LineBreak

    sc ; Adlm                             ; Adlam
    sc ; Bhks                             ; Bhaiksuki
    sc ; Marc                             ; Marchen
    sc ; Newa                             ; Newa
    sc ; Osge                             ; Osage
    sc ; Tang                             ; Tangut
  -> all of them had been added already to uscript.h & com.ibm.icu.lang.UScript

    WB ; EB                               ; E_Base
    WB ; EBG                              ; E_Base_GAZ
    WB ; EM                               ; E_Modifier
    WB ; GAZ                              ; Glue_After_Zwj
    WB ; ZWJ                              ; ZWJ
  -> uchar.h & UCharacter.WordBreak

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  ~/svn.icutools/trunk/src/unicode$ py/parsescriptmetadata.py $ICU_SRC_DIR/source/common/unicode/uscript.h ~/svn.cldr/trunk/common/properties/scriptMetadata.txt

* generate normalization data files
  cd $ICU_ROOT/dbg
  bin/gennorm2 -o $ICU_SRC_DIR/source/common/norm2_nfc_data.h -s $UNIDATA/norm2 nfc.txt --csource
  bin/gennorm2 -o $SRC_DATA_IN/nfc.nrm     -s $UNIDATA/norm2 nfc.txt
  bin/gennorm2 -o $SRC_DATA_IN/nfkc.nrm    -s $UNIDATA/norm2 nfc.txt nfkc.txt
  bin/gennorm2 -o $SRC_DATA_IN/nfkc_cf.nrm -s $UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
  bin/gennorm2 -o $SRC_DATA_IN/uts46.nrm   -s $UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg$ echo;echo;make -j5 install > out.txt 2>&1 ; tail -n 30 out.txt

* build Unicode tools using CMake+make

~/svn.icutools/trunk/src/unicode/c/icudefs.txt:

  # Location (--prefix) of where ICU was installed.
  set(ICU_INST_DIR /home/mscherer/svn.icu/trunk/inst)
  # Location of the ICU source tree.
  set(ICU_SRC_DIR /home/mscherer/svn.icu/trunk/src)

  ~/svn.icutools/trunk/dbg/unicode/c$
    cmake ../../../src/unicode/c
    make

* generate core properties data files
  ~/svn.icutools/trunk/dbg/unicode/c$
    genprops/genprops $ICU_SRC_DIR
    genuca/genuca --hanOrder implicit $ICU_SRC_DIR
    genuca/genuca --hanOrder radical-stroke $ICU_SRC_DIR
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..9.0: U+2260, U+226E, U+226F
- nothing new in 9.0, no test file to update

* run & fix ICU4C tests
- Andy handles RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools, see
  https://sites.google.com/site/unicodetools/home#TOC-UCA
- CLDR root data files are checked into (CLDR UCA branch)/common/uca/
    cp (UCA generated)/CollationAuxiliary/* ~/svn.cldr/trunk/common/uca/

- cd (CLDR UCA branch)/common/uca/
- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
    cp FractionalUCA_SHORT.txt $ICU_SRC_DIR/source/data/unidata/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp $ICU_SRC_DIR/source/data/unidata/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp UCA_Rules_SHORT.txt $ICU_SRC_DIR/source/data/unidata/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU_SRC_DIR/source/data/unidata/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC_DIR/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC_DIR/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp $ICU_SRC_DIR/source/test/testdata/CollationTest_*.txt ~/svn.icu4j/trunk/src/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC_DIR/source/data/coll/root.txt

- run genuca, see command line above;
  deal with
    Error: Unknown script for first-primary sample character U+104B5 on line 32599 of /home/mscherer/svn.icu/trunk/src/source/data/unidata/FractionalUCA.txt:
    FDD1 104B5;     [75 B8 02, 05, 05]      # Osage first primary (compressible)
        (add the character to genuca.cpp sampleCharsToScripts[])
  + look up the USCRIPT_ code for the new sample characters
    (should be obvious from the comment in the error output)
  + *add* mappings to sampleCharsToScripts[], do not replace them
    (in case the script sample characters flip-flop)
  + insert new scripts in DUCET script order, see the top_byte table
    at the beginning of FractionalUCA.txt
- rebuild ICU4C

* Unihan collators
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollators
  with VM arguments
    -DSVN_WORKSPACE=/home/mscherer/svn.unitools/trunk
    -DOTHER_WORKSPACE=/home/mscherer/svn.unitools
    -DUCD_DIR=/home/mscherer/svn.unitools/trunk/data
    -DCLDR_DIR=/home/mscherer/svn.cldr/trunk
    -DUVERSION=9.0.0
    -ea
- run Unicode Tools
    org.unicode.draft.GenerateUnihanCollatorFiles
  with the same arguments
- check CLDR diffs
    cd ~/svn.cldr/trunk
    meld common/collation/zh.xml ../Generated/cldr/han/replace/zh.xml
    meld common/transforms/Han-Latin.xml ../Generated/cldr/han/replace/Han-Latin.xml
- copy to CLDR
    cd ~/svn.cldr/trunk
    cp ../Generated/cldr/han/replace/zh.xml common/collation/zh.xml
    cp ../Generated/cldr/han/replace/Han-Latin.xml common/transforms/Han-Latin.xml
- commit to CLDR
- generate ICU zh collation data: run CLDR
    org.unicode.cldr.icu.NewLdml2IcuConverter
  with program arguments
    -t collation
    -s /home/mscherer/svn.cldr/trunk/common/collation
    -m /home/mscherer/svn.cldr/trunk/common/supplemental
    -d /home/mscherer/svn.icu/trunk/src/source/data/coll
    -p /home/mscherer/svn.icu/trunk/src/source/data/xml/collation
    zh
  and VM arguments
    -DCLDR_DIR=/home/mscherer/svn.cldr/trunk
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/trunk/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt58l
    echo timestamp > uni-core-data
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt58b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt58b
    echo pnames.icu uprops.icu ucase.icu ubidi.icu nfc.nrm > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt58l.dat ./out/icu4j/icudt58b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt58l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt58b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt58b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt58b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt58b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt58b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt58b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt58b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt58b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/home/mscherer/svn.icu/trunk/dbg/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd ~/svn.icu/trunk/dbg/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uvf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/trunk/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu4j/trunk/src/main/shared/data
or
- ~/svn.icu/trunk/dbg$ make ICU4J_ROOT=~/svn.icu4j/trunk/src icu4j-data-install

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC_DIR/source/data/unidata
    cp confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp BidiCharacterTest.txt BidiTest.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp ~/unidata/uni90/20160603/ucd/CompositionExclusions.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** LayoutEngine script information

* Run icu4j-tools: com.ibm.icu.dev.tool.layout.ScriptNameBuilder.
  This generates LEScripts.h, LELanguages.h, ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp
  in the working directory.

  (It also generates ScriptRunData.cpp, which is no longer needed.)

  It also reads and regenerates tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptAndLanguages
  (a plain text file)
  which maps ICU versions to the numbers of script/language constants
  that were added then.
  (This mapping is probably obsolete since we do not print "@stable ICU xy" any more.)

  The generated files have a current copyright date and "@deprecated" statement.

* Review changes, fix Java tool if necessary, and copy to ICU4C
  cd ~/svn.icu4j/trunk/src
  meld $ICU_SRC_DIR/source/layout tools/misc/src/com/ibm/icu/dev/tool/layout
  cp tools/misc/src/com/ibm/icu/dev/tool/layout/*.h $ICU_SRC_DIR/source/layout
  cp tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptAndLanguageTags.cpp $ICU_SRC_DIR/source/layout

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools & ICU tools are checked in
  http://www.unicode.org/utility/trac/log/trunk/unicodetools
  http://bugs.icu-project.org/trac/log/tools/trunk

---------------------------------------------------------------------------- ***

New script codes early in ICU 58: https://unicode-org.atlassian.net/browse/ICU-11764

Adding
- new scripts in Unicode 9: Adlm, Bhks, Marc, Newa, Osge
- new combination/alias codes: Hanb, Jamo
  - used in CLDR 29 and in spoof checker
- new Z* code: Zsye

Add new codes to uscript.h & UScript.java, see Unicode update logs.
  -> com.ibm.icu.lang.UScript
    find     USCRIPT_([^ ]+) *= ([0-9]+),(.+)
    replace  public static final int \1 = \2; \3

Manually edit ppucd.txt and icutools:unicode/c/genprops/pnames_data.h,
add new script codes.
"Long" script names only where established in Unicode 9 PropertyValueAliases.txt.

Note: If we have to run preparseucd.py again before the Unicode 9 update,
then we need to manually keep/restore the new script codes.

ICU_ROOT=~/svn.icu/trunk
ICU_SRC_DIR=$ICU_ROOT/src
ICUDT=icudt57b
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/lib
SRC_DATA_IN=$ICU_SRC_DIR/source/data/in
UNIDATA=$ICU_SRC_DIR/source/data/unidata

Adjust unicode/c/genprops/*builder.cpp for #ifndef/#ifdef changes in _data.h files,
see https://unicode-org.atlassian.net/browse/ICU-12141

make install, then icutools cmake & make, then
~/svn.icutools/trunk/dbg/unicode/c$ make && genprops/genprops $ICU_SRC_DIR

Generate Java data as usual, only update pnames.icu & uprops.icu.

*** LayoutEngine script information

* Run icu4j-tools: com.ibm.icu.dev.tool.layout.ScriptNameBuilder.
  This generates LEScripts.h, LELanguages.h, ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp
  in the working directory.

  (It also generates ScriptRunData.cpp, which is no longer needed.)

  It also reads and regenerates tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptAndLanguages
  (a plain text file)
  which maps ICU versions to the numbers of script/language constants
  that were added then.
  (This mapping is probably obsolete since we do not print "@stable ICU xy" any more.)

  The generated files have a current copyright date and "@deprecated" statement.

* Review changes, fix Java tool if necessary, and copy to ICU4C
  cd ~/svn.icu4j/trunk/src
  meld $ICU_SRC_DIR/source/layout tools/misc/src/com/ibm/icu/dev/tool/layout
  cp tools/misc/src/com/ibm/icu/dev/tool/layout/*.h $ICU_SRC_DIR/source/layout
  cp tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptAndLanguageTags.cpp $ICU_SRC_DIR/source/layout

---------------------------------------------------------------------------- ***

Emoji properties added in ICU 57: https://unicode-org.atlassian.net/browse/ICU-11802

Edit preparseucd.py to add & parse new properties.
They share the UCD property namespace but are not listed in PropertyAliases.txt.

Add emoji-data.txt to the input files, from http://www.unicode.org/Public/emoji/
Initial data from emoji/2.0/

ICU_ROOT=~/svn.icu/trunk
ICU_SRC_DIR=$ICU_ROOT/src
ICUDT=icudt56b
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/lib
SRC_DATA_IN=$ICU_SRC_DIR/source/data/in
UNIDATA=$ICU_SRC_DIR/source/data/unidata

Add binary-property constants to uchar.h enum UProperty & UProperty.java.

~/svn.icutools/trunk/src/unicode$ py/preparseucd.py ~/unidata/uni80/20151217 $ICU_SRC_DIR ~/svn.icutools/trunk/src
(Needs to be run after uchar.h additions, so that the new properties can be picked up by genprops.)

Data structure: uprops.h/.cpp, corepropsbuilder.cpp, UCharacterProperty.java

make install, then icutools cmake & make, then
~/svn.icutools/trunk/dbg/unicode/c$ make && genprops/genprops $ICU_SRC_DIR

Generate Java data as usual, only update pnames.icu & uprops.icu.

---------------------------------------------------------------------------- ***

Unicode 8.0 update for ICU 56

* Command-line environment setup

ICU_ROOT=~/svn.icu/trunk
ICU_SRC_DIR=$ICU_ROOT/src
ICUDT=icudt56b
export LD_LIBRARY_PATH=$ICU_ROOT/dbg/lib
SRC_DATA_IN=$ICU_SRC_DIR/source/data/in
UNIDATA=$ICU_SRC_DIR/source/data/unidata

http://www.unicode.org/review/pri297/  -- beta review
http://www.unicode.org/reports/uax-proposed-updates.html
http://unicode.org/versions/beta-8.0.0.html
http://www.unicode.org/versions/Unicode8.0.0/
http://www.unicode.org/reports/tr44/tr44-15.html

*** ICU Trac

- ticket:11574: Unicode 8
- C++ branches/markus/uni80 at r37351 from trunk at r37343
- Java branches/markus/uni80 at r37352 from trunk at r37338

*** CLDR Trac

- cldrbug 8311: UCA 8
- branches/markus/uni80 at r11518 from trunk at r11517

- cldrbug 8109: Unicode 8.0 script metadata
- cldrbug 8418: Updated segmentation for Unicode 8.0

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
  so that the makefiles see the new version number.

*** data files & enums & parser code

* file preparation

- download UCD & IDNA files
- make sure that the Unicode data folder passed into preparseucd.py
  includes a copy of the latest IdnaMappingTable.txt (can be in some subfolder)
- only for manual diffs: remove version suffixes from the file names
  ~/unidata/uni70/20140403$ ../../desuffixucd.py .
  (see https://sites.google.com/site/unicodetools/inputdata)
- only for manual diffs: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip
- ~/svn.icutools/trunk/src/unicode$ py/preparseucd.py ~/unidata/uni80/20150415 $ICU_SRC_DIR ~/svn.icutools/trunk/src
- This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.

- also: from http://unicode.org/Public/security/8.0.0/ download new
  confusables.txt & confusablesWholeScript.txt
  and copy to $UNIDATA
    ~/unidata$ cp uni80/20150415/security/confusables.txt $UNIDATA
    ~/unidata$ cp uni80/20150415/security/confusablesWholeScript.txt $UNIDATA

* initial preparseucd.py changes
- remove new Unicode scripts from the
  only-in-ISO-15924 list according to the error message:
    ValueError: remove ['Ahom', 'Hatr', 'Hluw', 'Hung', 'Mult', 'Sgnw']
    from _scripts_only_in_iso15924
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
- property and file name change:
    IndicMatraCategory -> IndicPositionalCategory
- UnicodeData.txt unusual numeric values (improper fractions)
    109F6;MEROITIC CURSIVE FRACTION ONE TWELFTH;No;0;R;;;;1/12;N;;;;;
    109F7;MEROITIC CURSIVE FRACTION TWO TWELFTHS;No;0;R;;;;2/12;N;;;;;
    109F8;MEROITIC CURSIVE FRACTION THREE TWELFTHS;No;0;R;;;;3/12;N;;;;;
    109F9;MEROITIC CURSIVE FRACTION FOUR TWELFTHS;No;0;R;;;;4/12;N;;;;;
    109FA;MEROITIC CURSIVE FRACTION FIVE TWELFTHS;No;0;R;;;;5/12;N;;;;;
    109FB;MEROITIC CURSIVE FRACTION SIX TWELFTHS;No;0;R;;;;6/12;N;;;;;
    109FC;MEROITIC CURSIVE FRACTION SEVEN TWELFTHS;No;0;R;;;;7/12;N;;;;;
    109FD;MEROITIC CURSIVE FRACTION EIGHT TWELFTHS;No;0;R;;;;8/12;N;;;;;
    109FE;MEROITIC CURSIVE FRACTION NINE TWELFTHS;No;0;R;;;;9/12;N;;;;;
    109FF;MEROITIC CURSIVE FRACTION TEN TWELFTHS;No;0;R;;;;10/12;N;;;;;
  -> change preparseucd.py to map them to proper fractions (e.g., 1/6)
     which are listed in DerivedNumericValues.txt;
     keeps storage in data file simple

* PropertyValueAliases.txt changes
- 10 new Block (blk) values:
    blk; Ahom                             ; Ahom
    blk; Anatolian_Hieroglyphs            ; Anatolian_Hieroglyphs
    blk; Cherokee_Sup                     ; Cherokee_Supplement
    blk; CJK_Ext_E                        ; CJK_Unified_Ideographs_Extension_E
    blk; Early_Dynastic_Cuneiform         ; Early_Dynastic_Cuneiform
    blk; Hatran                           ; Hatran
    blk; Multani                          ; Multani
    blk; Old_Hungarian                    ; Old_Hungarian
    blk; Sup_Symbols_And_Pictographs      ; Supplemental_Symbols_And_Pictographs
    blk; Sutton_SignWriting               ; Sutton_SignWriting
  -> add to uchar.h
    use long property names for enum constants
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
- 6 new Script (sc) values:
    sc ; Ahom                             ; Ahom
    sc ; Hatr                             ; Hatran
    sc ; Hluw                             ; Anatolian_Hieroglyphs
    sc ; Hung                             ; Old_Hungarian
    sc ; Mult                             ; Multani
    sc ; Sgnw                             ; SignWriting
  -> all of them had been added already to uscript.h & com.ibm.icu.lang.UScript

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  ~/svn.icutools/trunk/src/unicode$ py/parsescriptmetadata.py $ICU_SRC_DIR/source/common/unicode/uscript.h ~/svn.cldr/trunk/common/properties/scriptMetadata.txt

* generate normalization data files
  cd $ICU_ROOT/dbg
  bin/gennorm2 -o $ICU_SRC_DIR/source/common/norm2_nfc_data.h -s $UNIDATA/norm2 nfc.txt --csource
  bin/gennorm2 -o $SRC_DATA_IN/nfc.nrm     -s $UNIDATA/norm2 nfc.txt
  bin/gennorm2 -o $SRC_DATA_IN/nfkc.nrm    -s $UNIDATA/norm2 nfc.txt nfkc.txt
  bin/gennorm2 -o $SRC_DATA_IN/nfkc_cf.nrm -s $UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
  bin/gennorm2 -o $SRC_DATA_IN/uts46.nrm   -s $UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

  $ICU_ROOT/dbg$ echo;echo;make -j5 install > out.txt 2>&1 ; tail -n 20 out.txt

* build Unicode tools using CMake+make

~/svn.icutools/trunk/src/unicode/c/icudefs.txt:

  # Location (--prefix) of where ICU was installed.
  set(ICU_INST_DIR /home/mscherer/svn.icu/trunk/inst)
  # Location of the ICU source tree.
  set(ICU_SRC_DIR /home/mscherer/svn.icu/trunk/src)

  ~/svn.icutools/trunk/dbg/unicode/c$ cmake ../../../src/unicode/c
  ~/svn.icutools/trunk/dbg/unicode/c$ make

* generate core properties data files
- ~/svn.icutools/trunk/dbg/unicode/c$ genprops/genprops $ICU_SRC_DIR
- ~/svn.icutools/trunk/dbg/unicode/c$ genuca/genuca --hanOrder implicit $ICU_SRC_DIR
- ~/svn.icutools/trunk/dbg/unicode/c$ genuca/genuca --hanOrder radical-stroke $ICU_SRC_DIR
- rebuild ICU (make install) & tools
- run genuca again (see step above) so that it picks up the new nfc.nrm
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..8.0: U+2260, U+226E, U+226F
- nothing new in 8.0, no test file to update

* run & fix ICU4C tests
- bad Cherokee case folding due to difference in fallbacks:
  UCD case folding falls back to no mapping,
  ICU runtime case folding falls back to lowercasing;
  fixed casepropsbuilder.cpp to generate scf mappings to self
  when there is an slc mapping but no scf
- Andy handles RBBI & spoof check test failures

* collation: CLDR collation root, UCA DUCET

- UCA DUCET goes into Mark's Unicode tools, see
  https://sites.google.com/site/unicodetools/home#TOC-UCA
- CLDR root data files are checked into (CLDR UCA branch)/common/uca/
- cd (CLDR UCA branch)/common/uca/
- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
  cp FractionalUCA_SHORT.txt $ICU_SRC_DIR/source/data/unidata/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    cp $ICU_SRC_DIR/source/data/unidata/UCARules.txt /tmp/UCARules-old.txt
    (note removing the underscore before "Rules")
    cp UCA_Rules_SHORT.txt $ICU_SRC_DIR/source/data/unidata/UCARules.txt
- restore TODO diffs in UCARules.txt
    meld /tmp/UCARules-old.txt $ICU_SRC_DIR/source/data/unidata/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  from the CLDR root files (..._CLDR_..._SHORT.txt)
    cp CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC_DIR/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC_DIR/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp $ICU_SRC_DIR/source/test/testdata/CollationTest_*.txt ~/svn.icu4j/trunk/src/main/tests/collate/src/com/ibm/icu/dev/data
- if CLDR common/uca/unihan-index.txt changes, then update
  CLDR common/collation/root.xml <collation type="private-unihan">
  and regenerate (or update in parallel) $ICU_SRC_DIR/source/data/coll/root.txt
- run genuca, see command line above;
  deal with
    Error: Unknown script for first-primary sample character U+07d8 on line 23005 of /home/mscherer/svn.icu/trunk/src/source/data/unidata/FractionalUCA.txt
        (add the character to genuca.cpp sampleCharsToScripts[])
  + look up the script for the new sample characters
    (e.g., in FractionalUCA.txt)
  + *add* mappings to sampleCharsToScripts[], do not replace them
    (in case the script sample characters flip-flop)
  + insert new scripts in DUCET script order, see the top_byte table
    at the beginning of FractionalUCA.txt
- rebuild ICU4C

* run & fix ICU4C tests, now with new CLDR collation root data
- run all tests with the collation test data *_SHORT.txt or the full files
  (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test
- fixed bug in CollationWeights::getWeightRanges()
  exposed by new data and CollationTest::TestRootElements

* update Java data files
- refresh just the UCD/UCA-related/derived files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/trunk/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt56l
    echo timestamp > uni-core-data
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt56b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt56b
    echo pnames.icu uprops.icu ucase.icu ubidi.icu nfc.nrm > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt56l.dat ./out/icu4j/icudt56b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt56l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt56b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt56b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt56b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt56b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt56b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt56b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt56b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt56b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/home/mscherer/svn.icu/trunk/dbg/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files,
  and then refresh ICU4J
    cd ~/svn.icu/trunk/dbg/data/out/icu4j
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cp com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/trunk/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu4j/trunk/src/main/shared/data
or
- ~/svn.icu/trunk/dbg$ make ICU4J_ROOT=~/svn.icu4j/trunk/src icu4j-data-install

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC_DIR/source/data/unidata
    cp confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp BidiCharacterTest.txt BidiTest.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp ~/unidata/uni80/20150415/ucd/CompositionExclusions.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode

* run & fix ICU4J tests

*** LayoutEngine script information

* ICU 56: Modify ScriptIDModuleWriter.java to not output @stable tags any more,
  because the layout engine was deprecated in ICU 54.
  Modify ScriptIDModuleWriter.java and ScriptTagModuleWriter.java
  to write lines that we used to add manually.

* Run icu4j-tools: com.ibm.icu.dev.tool.layout.ScriptNameBuilder.
  This generates LEScripts.h, LELanguages.h, ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp
  in the working directory.

  (It also generates ScriptRunData.cpp, which is no longer needed.)

  It also reads and regenerates tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptAndLanguages
  (a plain text file)
  which maps ICU versions to the numbers of script/language constants
  that were added then.
  (This mapping is probably obsolete since we do not print "@stable ICU xy" any more.)

  The generated files have a current copyright date and "@deprecated" statement.

* Review changes, fix Java tool if necessary, and copy to ICU4C
  cd ~/svn.icu4j/trunk/src
  meld $ICU_SRC_DIR/source/layout tools/misc/src/com/ibm/icu/dev/tool/layout
  cp tools/misc/src/com/ibm/icu/dev/tool/layout/*.h $ICU_SRC_DIR/source/layout
  cp tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptAndLanguageTags.cpp $ICU_SRC_DIR/source/layout

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C
- make sure that changes to Unicode tools & ICU tools are checked in
  http://www.unicode.org/utility/trac/log/trunk/unicodetools
  http://bugs.icu-project.org/trac/log/tools/trunk

---------------------------------------------------------------------------- ***

Unicode 7.0 update for ICU 54

http://www.unicode.org/review/pri271/  -- beta review
http://www.unicode.org/reports/uax-proposed-updates.html
http://www.unicode.org/versions/beta-7.0.0.html#notable_issues
http://www.unicode.org/reports/tr44/tr44-13.html

*** ICU Trac

- ticket 10821: Unicode 7.0, UCA 7.0
- C++ branches/markus/uni70 at r35584 from trunk at r35580
- Java branches/markus/uni70 at r35587 from trunk at r35545

*** CLDR Trac

- ticket 7195: UCA 7.0 CLDR root collation
- branches/markus/uni70 at r10062 from trunk at r10061

- ticket 6762: script metadata for Unicode 7.0 new scripts

*** Unicode version numbers
- makedata.mak
- uchar.h
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
  so that the makefiles see the new version number.

*** data files & enums & parser code

* file preparation

- download UCD & IDNA files
- make sure that the Unicode data folder passed into preparseucd.py
  includes a copy of the latest IdnaMappingTable.txt (can be in some subfolder)
- only for manual diffs: remove version suffixes from the file names
  ~/unidata/uni70/20140403$ ../../desuffixucd.py .
  (see https://sites.google.com/site/unicodetools/inputdata)
- only for manual diffs: extract Unihan.zip to "here" (.../ucd/Unihan/*.txt), delete Unihan.zip
- ~/svn.icutools/trunk/src/unicode$ py/preparseucd.py ~/unidata/uni70/20140403 $ICU_SRC_DIR ~/svn.icutools/trunk/src
- This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
- Restore TODO diffs in source/data/unidata/UCARules.txt
    cd $ICU_SRC_DIR
    meld ../../trunk/src/source/data/unidata/UCARules.txt source/data/unidata/UCARules.txt
- Restore ICU patches for ticket #10176 in source/test/testdata/LineBreakTest.txt

- also: from http://unicode.org/Public/security/7.0.0/ download new
  confusables.txt & confusablesWholeScript.txt
  and copy to $ICU_ROOT/src/source/data/unidata/

* initial preparseucd.py changes
- remove new Unicode scripts from the
  only-in-ISO-15924 list according to the error message:
    ValueError: remove ['Hmng', 'Lina', 'Perm', 'Mani', 'Phlp', 'Bass',
                        'Dupl', 'Elba', 'Gran', 'Mend', 'Narb', 'Nbat', 'Palm',
                        'Sind', 'Wara', 'Mroo', 'Khoj', 'Tirh', 'Aghb', 'Mahj']
    from _scripts_only_in_iso15924
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
- NamesList.txt now has a heading with a non-ASCII character
  + keep ppucd.txt in platform charset, rather than changing tool/test parsers
  + escape non-ASCII characters in heading comments
- gets Unicode copyright line from PropertyAliases.txt which is currently still at 2013
  + get the copyright from the first file whose copyright line contains the current year

* PropertyValueAliases.txt changes
- 32 new Block (blk) values:
    blk; Bassa_Vah                        ; Bassa_Vah
    blk; Caucasian_Albanian               ; Caucasian_Albanian
    blk; Coptic_Epact_Numbers             ; Coptic_Epact_Numbers
    blk; Diacriticals_Ext                 ; Combining_Diacritical_Marks_Extended
    blk; Duployan                         ; Duployan
    blk; Elbasan                          ; Elbasan
    blk; Geometric_Shapes_Ext             ; Geometric_Shapes_Extended
    blk; Grantha                          ; Grantha
    blk; Khojki                           ; Khojki
    blk; Khudawadi                        ; Khudawadi
    blk; Latin_Ext_E                      ; Latin_Extended_E
    blk; Linear_A                         ; Linear_A
    blk; Mahajani                         ; Mahajani
    blk; Manichaean                       ; Manichaean
    blk; Mende_Kikakui                    ; Mende_Kikakui
    blk; Modi                             ; Modi
    blk; Mro                              ; Mro
    blk; Myanmar_Ext_B                    ; Myanmar_Extended_B
    blk; Nabataean                        ; Nabataean
    blk; Old_North_Arabian                ; Old_North_Arabian
    blk; Old_Permic                       ; Old_Permic
    blk; Ornamental_Dingbats              ; Ornamental_Dingbats
    blk; Pahawh_Hmong                     ; Pahawh_Hmong
    blk; Palmyrene                        ; Palmyrene
    blk; Pau_Cin_Hau                      ; Pau_Cin_Hau
    blk; Psalter_Pahlavi                  ; Psalter_Pahlavi
    blk; Shorthand_Format_Controls        ; Shorthand_Format_Controls
    blk; Siddham                          ; Siddham
    blk; Sinhala_Archaic_Numbers          ; Sinhala_Archaic_Numbers
    blk; Sup_Arrows_C                     ; Supplemental_Arrows_C
    blk; Tirhuta                          ; Tirhuta
    blk; Warang_Citi                      ; Warang_Citi
  -> add to uchar.h
    use long property names for enum constants
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
- 28 new Joining_Group (jg) values:
    jg ; Manichaean_Aleph                 ; Manichaean_Aleph
    jg ; Manichaean_Ayin                  ; Manichaean_Ayin
    jg ; Manichaean_Beth                  ; Manichaean_Beth
    jg ; Manichaean_Daleth                ; Manichaean_Daleth
    jg ; Manichaean_Dhamedh               ; Manichaean_Dhamedh
    jg ; Manichaean_Five                  ; Manichaean_Five
    jg ; Manichaean_Gimel                 ; Manichaean_Gimel
    jg ; Manichaean_Heth                  ; Manichaean_Heth
    jg ; Manichaean_Hundred               ; Manichaean_Hundred
    jg ; Manichaean_Kaph                  ; Manichaean_Kaph
    jg ; Manichaean_Lamedh                ; Manichaean_Lamedh
    jg ; Manichaean_Mem                   ; Manichaean_Mem
    jg ; Manichaean_Nun                   ; Manichaean_Nun
    jg ; Manichaean_One                   ; Manichaean_One
    jg ; Manichaean_Pe                    ; Manichaean_Pe
    jg ; Manichaean_Qoph                  ; Manichaean_Qoph
    jg ; Manichaean_Resh                  ; Manichaean_Resh
    jg ; Manichaean_Sadhe                 ; Manichaean_Sadhe
    jg ; Manichaean_Samekh                ; Manichaean_Samekh
    jg ; Manichaean_Taw                   ; Manichaean_Taw
    jg ; Manichaean_Ten                   ; Manichaean_Ten
    jg ; Manichaean_Teth                  ; Manichaean_Teth
    jg ; Manichaean_Thamedh               ; Manichaean_Thamedh
    jg ; Manichaean_Twenty                ; Manichaean_Twenty
    jg ; Manichaean_Waw                   ; Manichaean_Waw
    jg ; Manichaean_Yodh                  ; Manichaean_Yodh
    jg ; Manichaean_Zayin                 ; Manichaean_Zayin
    jg ; Straight_Waw                     ; Straight_Waw
  -> uchar.h & UCharacter.JoiningGroup
- 23 new Script (sc) values:
    sc ; Aghb                             ; Caucasian_Albanian
    sc ; Bass                             ; Bassa_Vah
    sc ; Dupl                             ; Duployan
    sc ; Elba                             ; Elbasan
    sc ; Gran                             ; Grantha
    sc ; Hmng                             ; Pahawh_Hmong
    sc ; Khoj                             ; Khojki
    sc ; Lina                             ; Linear_A
    sc ; Mahj                             ; Mahajani
    sc ; Mani                             ; Manichaean
    sc ; Mend                             ; Mende_Kikakui
    sc ; Modi                             ; Modi
    sc ; Mroo                             ; Mro
    sc ; Narb                             ; Old_North_Arabian
    sc ; Nbat                             ; Nabataean
    sc ; Palm                             ; Palmyrene
    sc ; Pauc                             ; Pau_Cin_Hau
    sc ; Perm                             ; Old_Permic
    sc ; Phlp                             ; Psalter_Pahlavi
    sc ; Sidd                             ; Siddham
    sc ; Sind                             ; Khudawadi
    sc ; Tirh                             ; Tirhuta
    sc ; Wara                             ; Warang_Citi
  -> uscript.h (many were added before)
    comment "Mende Kikakui" for USCRIPT_MENDE
    add USCRIPT_KHUDAWADI, make USCRIPT_SINDHI an alias
  -> com.ibm.icu.lang.UScript
    find     USCRIPT_([^ ]+) *= ([0-9]+),(.+)
    replace  public static final int \1 = \2; \3
- 6 new script codes from ISO 15924 http://www.unicode.org/iso15924/codechanges.html
  (added 2012-11-01)
    Ahom        338     Ahom
    Hatr        127     Hatran
    Mult        323     Multani
  (added 2013-10-12)
    Modi        324     Modi
    Pauc        263     Pau Cin Hau
    Sidd        302     Siddham
  -> uscript.h (some overlap with additions from Unicode)
  -> com.ibm.icu.lang.UScript
    find     USCRIPT_([^ ]+) *= ([0-9]+),(.+)
    replace  public static final int \1 = \2; \3
  -> add Ahom, Hatr, Mult to preparseucd.py _scripts_only_in_iso15924
  -> add to expectedLong and expectedShort names in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

* update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
    (not strictly necessary for NOT_ENCODED scripts)
  ~/svn.icutools/trunk/src/unicode$ py/parsescriptmetadata.py $ICU_SRC_DIR/source/common/unicode/uscript.h ~/svn.cldr/trunk/common/properties/scriptMetadata.txt

* generate normalization data files
- cd $ICU_ROOT/dbg
- export LD_LIBRARY_PATH=$ICU_ROOT/dbg/lib
- SRC_DATA_IN=$ICU_SRC_DIR/source/data/in
- UNIDATA=$ICU_SRC_DIR/source/data/unidata
- bin/gennorm2 -o $ICU_SRC_DIR/source/common/norm2_nfc_data.h -s $UNIDATA/norm2 nfc.txt --csource
- bin/gennorm2 -o $SRC_DATA_IN/nfc.nrm     -s $UNIDATA/norm2 nfc.txt
- bin/gennorm2 -o $SRC_DATA_IN/nfkc.nrm    -s $UNIDATA/norm2 nfc.txt nfkc.txt
- bin/gennorm2 -o $SRC_DATA_IN/nfkc_cf.nrm -s $UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
- bin/gennorm2 -o $SRC_DATA_IN/uts46.nrm   -s $UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

~/svn.icu/uni70/dbg$ echo;echo;make -j5 install > out.txt 2>&1 ; tail -n 20 out.txt

* build Unicode tools using CMake+make

~/svn.icutools/trunk/src/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /home/mscherer/svn.icu/uni70/inst)
# Location of the ICU source tree.
set(ICU_SRC_DIR /home/mscherer/svn.icu/uni70/src)

~/svn.icutools/trunk/dbg/unicode/c$ cmake ../../../src/unicode/c
~/svn.icutools/trunk/dbg/unicode/c$ make

* genprops work
- new code point range for Joining_Group values: 10AC0..10AFF Manichaean
  + add second array of Joining_Group values for at most 10800..10FFF
    icutools: unicode/c/genprops/bidipropsbuilder.cpp
    icu: source/common/ubidi_props.h/.c/_data.h
    icu4j: main/classes/core/src/com/ibm/icu/impl/UBiDiProps.java

* generate core properties data files
- ~/svn.icutools/trunk/dbg/unicode/c$ genprops/genprops $ICU_SRC_DIR
- ~/svn.icutools/trunk/dbg/unicode/c$ genuca/genuca $ICU_SRC_DIR
- rebuild ICU (make install) & tools
- run genuca again (see step above) so that it picks up the new nfc.nrm
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..7.0: U+2260, U+226E, U+226F
- nothing new in 7.0, no test file to update

* run & fix ICU4C tests

* update Java data files
- refresh just the UCD-related files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/uni70/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt53l
    echo timestamp > uni-core-data
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt53b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt53b
    echo pnames.icu ubidi.icu ucase.icu uprops.icu > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt53l.dat ./out/icu4j/icudt53b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt53l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt53b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt53b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt53b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt53b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt53b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt53b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt53b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt53b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/home/mscherer/svn.icu/uni70/dbg/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files
    ICUDT=icudt54b
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
    cd ~/svn.icu/uni70/dbg/data/out/icu4j
    cp com/ibm/icu/impl/data/$ICUDT/confusables.cfu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    rm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/cnvalias.icu
    cp com/ibm/icu/impl/data/$ICUDT/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT
    cp com/ibm/icu/impl/data/$ICUDT/coll/*.icu /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    cp com/ibm/icu/impl/data/$ICUDT/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/brkitr
- refresh ICU4J
    ~/svn.icu/uni70/dbg/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT

* update CollationFCD.java
  + copy & paste the initializers of lcccIndex[] etc. from
    ICU4C/source/i18n/collationfcd.cpp to
    ICU4J/main/classes/collate/src/com/ibm/icu/impl/coll/CollationFCD.java

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd $ICU_SRC_DIR/source/data/unidata
    cp confusables.txt confusablesWholeScript.txt NormalizationCorrections.txt NormalizationTest.txt SpecialCasing.txt UnicodeData.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cd ../../test/testdata
    cp BidiCharacterTest.txt BidiTest.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode
    cp ~/unidata/uni70/20140409/ucd/CompositionExclusions.txt ~/svn.icu4j/trunk/src/main/tests/core/src/com/ibm/icu/dev/data/unicode

* UCA

- download UCA files (mostly allkeys.txt) from http://www.unicode.org/Public/UCA/<beta version>/
- run desuffixucd.py (see https://sites.google.com/site/unicodetools/inputdata)
- update the input files for Mark's UCA tools, in ~/svn.unitools/trunk/data/uca/7.0.0/
- run Mark's UCA Main: https://sites.google.com/site/unicodetools/home#TOC-UCA
- output files are in ~/svn.unitools/Generated/uca/7.0.0/
- review data; compare files, use blankweights.sed or similar
  ~/svn.unitools$ sed -r -f blankweights.sed Generated/uca/7.0.0/CollationAuxiliary/FractionalUCA.txt > frac-7.0.txt
- cd ~/svn.unitools/Generated/uca/7.0.0/
- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
  cp CollationAuxiliary/FractionalUCA_SHORT.txt $ICU_SRC_DIR/source/data/unidata/FractionalUCA.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
    (note removing the underscore before "Rules")
    cp CollationAuxiliary/UCA_Rules_SHORT.txt $ICU_SRC_DIR/source/data/unidata/UCARules.txt
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  with output from Mark's Unicode tools (..._CLDR_..._SHORT.txt)
    cp CollationAuxiliary/CollationTest_CLDR_NON_IGNORABLE_SHORT.txt $ICU_SRC_DIR/source/test/testdata/CollationTest_NON_IGNORABLE_SHORT.txt
    cp CollationAuxiliary/CollationTest_CLDR_SHIFTED_SHORT.txt $ICU_SRC_DIR/source/test/testdata/CollationTest_SHIFTED_SHORT.txt
    cp $ICU_SRC_DIR/source/test/testdata/CollationTest_*.txt ~/svn.icu4j/trunk/src/main/tests/collate/src/com/ibm/icu/dev/data
- run genuca, see command line above
- rebuild ICU4C
- refresh ICU4J collation data:
  (subset of instructions above for properties data refresh, except copies all coll/*)
    ICUDT=icudt54b
    ~/svn.icu/uni70/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    ~/svn.icu/uni70/dbg$ mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    ~/svn.icu/uni70/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/$ICUDT/coll/* /tmp/icu4j/com/ibm/icu/impl/data/$ICUDT/coll
    ~/svn.icu/uni70/dbg/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/$ICUDT
- run all tests with the *_SHORT.txt or the full files (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test
- copy all output from Mark's UCA tool to unicode.org for review & staging by Ken & editors
- copy most of ~/svn.unitools/Generated/uca/7.0.0/CollationAuxiliary/* to CLDR branch
  ~/svn.unitools$ cp Generated/uca/7.0.0/CollationAuxiliary/* ~/svn.cldr/trunk/common/uca/

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/uni70/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu4j/trunk/src/main/shared/data
or
- ~/svn.icu/uni70/dbg$ make ICU4J_ROOT=~/svn.icu4j/trunk/src icu4j-data-install

* run & fix ICU4J tests

*** LayoutEngine script information

(For details see the Unicode 5.2 change log below.)

* Run icu4j-tools: com.ibm.icu.dev.tool.layout.ScriptNameBuilder.
  This generates LEScripts.h, LELanguages.h, ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp
  in the working directory.
  (It also generates ScriptRunData.cpp, which is no longer needed.)

  The generated files have a current copyright date and "@stable" statement.
  ICU 54: Fixed tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptIDModuleWriter.java
  for "born stable" Unicode API constants, and to stop parsing ICU version numbers
  which may not contain dots any more.

- diff current <icu>/source/layout files vs. generated ones
    ~/svn.icu4j/trunk/src$ meld $ICU_SRC_DIR/source/layout tools/misc/src/com/ibm/icu/dev/tool/layout
  review and manually merge desired changes;
  fix gratuitous changes, incorrect @draft/@stable and missing aliases;
  Unicode-derived script codes should be "born stable" like constants in uchar.h, uscript.h etc.
- if you just copy the above files, then
  fix mixed line endings, review the diffs as above and restore changes to API tags etc.;
  manually re-add the "Indic script xyz v.2" tags in ScriptAndLanguageTags.h

*** API additions
- send notice to icu-design about new born-@stable API (enum constants etc.)

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C

---------------------------------------------------------------------------- ***

Unicode 6.3 update

http://www.unicode.org/review/pri249/  -- beta review
http://www.unicode.org/reports/uax-proposed-updates.html
http://www.unicode.org/versions/beta-6.3.0.html#notable_issues
http://www.unicode.org/reports/tr44/tr44-11.html

*** ICU Trac

- ticket 10128: update ICU to Unicode 6.3 beta
- ticket 10168: update ICU to Unicode 6.3 final
- C++ branches/markus/uni63 at r33552 from trunk at r33551
- Java branches/markus/uni63 at r33550 from trunk at r33553

- ticket 10142: implement Unicode 6.3 bidi algorithm additions

*** Unicode version numbers
- makedata.mak
- uchar.h
  (configure.in & configure: have been modified to extract the version from uchar.h)
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

- Run ICU4C "configure" _after_ updating the Unicode version number in uchar.h
  so that the makefiles see the new version number.

*** data files & enums & parser code

* file preparation

- download UCD, UCA & IDNA files
- make sure that the Unicode data folder passed into preparseucd.py
  includes a copy of the latest IdnaMappingTable.txt (can be in some subfolder)
- modify preparseucd.py:
  parse new file BidiBrackets.txt
  with new properties bpb=Bidi_Paired_Bracket and bpt=Bidi_Paired_Bracket_Type
- ~/svn.icutools/trunk/src/unicode$ py/preparseucd.py ~/unidata/uni63/20130425 ~/svn.icu/uni63/src ~/svn.icutools/trunk/src
- This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
- Check test file diffs for previously commented-out, known-failing data lines;
  probably need to keep those commented out.

* PropertyAliases.txt changes
- 1 new Enumerated Property
  bpt                      ; Bidi_Paired_Bracket_Type
  -> uchar.h & UProperty.java & UCharacter.BidiPairedBracketType
  -> ubidi_props.h & .c & UBiDiProps.java
  -> remember to write the max value at UBIDI_MAX_VALUES_INDEX
  -> uprops.cpp
  -> change ubidi.icu format version from 2.0 to 2.1
- 1 new Miscellaneous Property
  bpb                      ; Bidi_Paired_Bracket
  -> uchar.h & UProperty.java
  -> ppucd.h & .cpp

* PropertyValueAliases.txt changes
- 3 Bidi_Paired_Bracket_Type (bpt) values:
  bpt; c                                ; Close
  bpt; n                                ; None
  bpt; o                                ; Open
  -> uchar.h & UCharacter.BidiPairedBracketType
  -> ubidi_props.h & .c & UBiDiProps.java
  -> change ubidi.icu format version from 2.0 to 2.1
- 4 new Bidi_Class (bc) values:
  bc ; FSI                              ; First_Strong_Isolate
  bc ; LRI                              ; Left_To_Right_Isolate
  bc ; RLI                              ; Right_To_Left_Isolate
  bc ; PDI                              ; Pop_Directional_Isolate
  -> uchar.h & UCharacterEnums.ECharacterDirection
  -> until the bidi code gets updated,
     Roozbeh suggests mapping the new bc values to ON (Other_Neutral)
- 3 new Word_Break (WB) values:
  WB ; HL                               ; Hebrew_Letter
  WB ; SQ                               ; Single_Quote
  WB ; DQ                               ; Double_Quote
  -> uchar.h & UCharacter.WordBreak
  -> first time Word_Break numeric constants exceed 4 bits (now 17 values)
- 2 new script codes from ISO 15924 http://www.unicode.org/iso15924/codechanges.html
  (added 2012-10-16)
  Aghb  239     Caucasian Albanian
  Mahj  314     Mahajani
  -> uscript.h
  -> com.ibm.icu.lang.UScript
    find     USCRIPT_([^ ]+) *= ([0-9]+),(.+)
    replace  public static final int \1 = \2;\3
  -> preparseucd.py _scripts_only_in_iso15924
  -> add to expectedLong and expectedShort names in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
  -> update Script metadata: SCRIPT_PROPS[] in uscript_props.cpp & UScript.ScriptMetadata
     (not strictly necessary for NOT_ENCODED scripts)

* generate normalization data files
- ~/svn.icu/uni63/dbg$ export LD_LIBRARY_PATH=~/svn.icu/uni63/dbg/lib
- ~/svn.icu/uni63/dbg$ SRC_DATA_IN=~/svn.icu/uni63/src/source/data/in
- ~/svn.icu/uni63/dbg$ UNIDATA=~/svn.icu/uni63/src/source/data/unidata
- ~/svn.icu/uni63/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfc.nrm     -s $UNIDATA/norm2 nfc.txt
- ~/svn.icu/uni63/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfkc.nrm    -s $UNIDATA/norm2 nfc.txt nfkc.txt
- ~/svn.icu/uni63/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfkc_cf.nrm -s $UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
- ~/svn.icu/uni63/dbg$ bin/gennorm2 -o $SRC_DATA_IN/uts46.nrm   -s $UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.

~/svn.icu/uni63/dbg$ echo;echo;make -j5 install > out.txt 2>&1 ; tail -n 20 out.txt

* build Unicode tools using CMake+make

~/svn.icutools/trunk/src/unicode/c/icudefs.txt:

# Location (--prefix) of where ICU was installed.
set(ICU_INST_DIR /home/mscherer/svn.icu/uni63/inst)
# Location of the ICU source tree.
set(ICU_SRC_DIR /home/mscherer/svn.icu/uni63/src)

~/svn.icutools/trunk/dbg/unicode/c$ cmake ../../../src/unicode/c
~/svn.icutools/trunk/dbg/unicode/c$ make

* generate core properties data files
- ~/svn.icutools/trunk/dbg/unicode/c$ genprops/genprops ~/svn.icu/uni63/src
- ~/svn.icutools/trunk/dbg/unicode/c$ genuca/genuca -i ~/svn.icu/uni63/dbg/data/out/build/icudt52l ~/svn.icu/uni63/src
- rebuild ICU (make install) & tools
- run genuca again (see step above) so that it picks up the new case mappings and nfc.nrm
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..6.3: U+2260, U+226E, U+226F
- nothing new in 6.3, no test file to update

* update Java data files
- refresh just the UCD-related files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/uni63/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt52l
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt52b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt52b
    echo pnames.icu ubidi.icu ucase.icu uprops.icu > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt52l.dat ./out/icu4j/icudt52b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt52l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt52b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt52b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt52b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt52b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt52b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt52b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt52b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt52b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/home/mscherer/svn.icu/uni63/dbg/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt52b/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt52b/brkitr
    ~/svn.icu/uni63/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt52b/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt52b
    ~/svn.icu/uni63/dbg/data/out/icu4j$ rm /tmp/icu4j/com/ibm/icu/impl/data/icudt52b/cnvalias.icu
    ~/svn.icu/uni63/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt52b/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/icudt52b
    ~/svn.icu/uni63/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt52b/coll/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt52b/coll
    ~/svn.icu/uni63/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt52b/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/icudt52b/brkitr
- refresh ICU4J
    ~/svn.icu/uni63/dbg/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt52b

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode

* UCA -- mostly skipped for ICU 52 / Unicode 6.3, except update coll/* files

- get output from Mark's tools; look in http://www.unicode.org/Public/UCA/<beta version>/
- CLDR root files for ICU are in CollationAuxiliary.zip; unpack that
- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
  (note removing the underscore before "Rules")
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  with output from Mark's Unicode tools (..._CLDR_..._SHORT.txt)
- check test file diffs for previously commented-out, known-failing data lines;
  probably need to keep those commented out
- check FractionalUCA.txt for manual changes of lead bytes from IMPLICIT to Hani
- run genuca, see command line above
- rebuild ICU4C
- refresh ICU4J collation data:
  (subset of instructions above for properties data refresh, except copies all coll/*)
    ~/svn.icu/uni63/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    ~/svn.icu/uni63/dbg$ mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt52b/coll
    ~/svn.icu/uni63/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt52b/coll/* /tmp/icu4j/com/ibm/icu/impl/data/icudt52b/coll
    ~/svn.icu/uni63/dbg/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt52b
- run all tests with the *_SHORT.txt or the full files (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* test ICU, fix test code where necessary

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/uni63/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu4j/trunk/src/main/shared/data
or
- ~/svn.icu/uni63/dbg$ make ICU4J_ROOT=~/svn.icu4j/trunk/src icu4j-data-install

*** LayoutEngine script information
- skipped for Unicode 6.3: no new scripts

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C

---------------------------------------------------------------------------- ***

Unicode 6.2 update

http://www.unicode.org/review/pri230/
http://www.unicode.org/versions/beta-6.2.0.html
http://www.unicode.org/reports/tr44/tr44-9.html#Unicode_6.2.0
http://www.unicode.org/review/pri227/  Changes to Script Extensions Property Values
http://www.unicode.org/review/pri228/  Changing some common characters from Punctuation to Symbol
http://www.unicode.org/review/pri229/  Linebreaking Changes for Pictographic Symbols
http://www.unicode.org/reports/tr46/tr46-8.html  IDNA
http://unicode.org/Public/idna/6.2.0/

*** ICU Trac

- ticket 9515: Unicode 6.2: final ICU update

- ticket 9514: UCA 6.2: fix UCARules.txt

- ticket 9437: update ICU to Unicode 6.2
- C++ branches/markus/uni62 at r32050 from trunk at r32041
- Java branches/markus/uni62 at r32068 from trunk at r32066

*** Unicode version numbers
- makedata.mak
- uchar.h
  (configure.in & configure: have been modified to extract the version from uchar.h)
- com.ibm.icu.util.VersionInfo
- com.ibm.icu.dev.test.lang.UCharacterTest.VERSION_

*** data files & enums & parser code

* file preparation

- download UCD, UCA & IDNA files
- make sure that the Unicode data folder passed into preparseucd.py
  includes a copy of the latest IdnaMappingTable.txt (can be in some subfolder)
- modify preparseucd.py: NamesList.txt is now in UTF-8
- ~/svn.icu/tools/trunk/src/unicode$ py/preparseucd.py ~/uni62/20120816 ~/svn.icu/uni62/src ~/svn.icu/tools/trunk/src
- This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
- Check test file diffs for previously commented-out, known-failing data lines;
  probably need to keep those commented out.

* PropertyValueAliases.txt changes
- 1 new Line_Break (lb) value:
  lb ; RI                               ; Regional_Indicator
  -> uchar.h & UCharacter.LineBreak
- 1 new Word_Break (WB) value:
  WB ; RI                               ; Regional_Indicator
  -> uchar.h & UCharacter.WordBreak
- 1 new Grapheme_Cluster_Break (GCB) value:
  GCB; RI                               ; Regional_Indicator
  -> uchar.h & UCharacter.GraphemeClusterBreak

* 3 new numeric values
  The new value -1, which was really supposed to be NaN but that would have required
  new UnicodeData.txt syntax, can already be represented as a "fraction" of -1/1,
  but encodeNumericValue() in corepropsbuilder.cpp had to be fixed.
    cp;12456;na=CUNEIFORM NUMERIC SIGN NIGIDAMIN;nv=-1
    cp;12457;na=CUNEIFORM NUMERIC SIGN NIGIDAESH;nv=-1
  The two new values 216000 and 432000 require an addition to the encoding of numeric values.
    cp;12432;na=CUNEIFORM NUMERIC SIGN SHAR2 TIMES GAL PLUS DISH;nv=216000
    cp;12433;na=CUNEIFORM NUMERIC SIGN SHAR2 TIMES GAL PLUS MIN;nv=432000
  -> uprops.h, uchar.c & UCharacterProperty.java
  -> cucdtst.c & UCharacterTest.java

* generate normalization data files
- ~/svn.icu/uni62/dbg$ export LD_LIBRARY_PATH=~/svn.icu/uni62/dbg/lib
- ~/svn.icu/uni62/dbg$ SRC_DATA_IN=~/svn.icu/uni62/src/source/data/in
- ~/svn.icu/uni62/dbg$ UNIDATA=~/svn.icu/uni62/src/source/data/unidata
- ~/svn.icu/uni62/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfc.nrm     -s $UNIDATA/norm2 nfc.txt
- ~/svn.icu/uni62/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfkc.nrm    -s $UNIDATA/norm2 nfc.txt nfkc.txt
- ~/svn.icu/uni62/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfkc_cf.nrm -s $UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
- ~/svn.icu/uni62/dbg$ bin/gennorm2 -o $SRC_DATA_IN/uts46.nrm   -s $UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.
* build Unicode tools using CMake+make

* generate core properties data files
- ~/svn.icu/tools/trunk/dbg/unicode$ c/genprops/genprops ~/svn.icu/uni62/src
- in initial bootstrapping, change the UCA version
  in source/data/unidata/FractionalUCA.txt to match the new Unicode version
- ~/svn.icu/tools/trunk/dbg/unicode$ c/genuca/genuca -i ~/svn.icu/uni62/dbg/data/out/build/icudt50l ~/svn.icu/uni62/src
- rebuild ICU (make install) & tools
  + if genrb fails to build coll/root.res with an U_INVALID_FORMAT_ERROR,
    check if the UCA version in FractionalUCA.txt matches the new Unicode version
    (see step above)
- run genuca again (see step above) so that it picks up the new case mappings and nfc.nrm
- rebuild ICU (make install) & tools

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..6.2: U+2260, U+226E, U+226F
- nothing new in 6.2, no test file to update

* update Java data files
- refresh just the UCD-related files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/uni62/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt50l
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt50b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt50b
    echo pnames.icu ubidi.icu ucase.icu uprops.icu > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt50l.dat ./out/icu4j/icudt50b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt50l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt50b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt50b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt50b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt50b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt50b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt50b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt50b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt50b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/home/mscherer/svn.icu/uni62/dbg/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt50b/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt50b/brkitr
    ~/svn.icu/uni62/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt50b/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt50b
    ~/svn.icu/uni62/dbg/data/out/icu4j$ rm /tmp/icu4j/com/ibm/icu/impl/data/icudt50b/cnvalias.icu
    ~/svn.icu/uni62/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt50b/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/icudt50b
    ~/svn.icu/uni62/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt50b/coll/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt50b/coll
    ~/svn.icu/uni62/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt50b/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/icudt50b/brkitr
- refresh ICU4J
    ~/svn.icu/uni62/dbg/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt50b

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode

* UCA

- get output from Mark's tools; look in http://www.unicode.org/Public/UCA/<beta version>/
- CLDR root files for ICU are in CollationAuxiliary.zip; unpack that
- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
  (note removing the underscore before "Rules")
- update (ICU4C)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  with output from Mark's Unicode tools (..._CLDR_..._SHORT.txt)
- check test file diffs for previously commented-out, known-failing data lines;
  probably need to keep those commented out
- check FractionalUCA.txt for manual changes of lead bytes from IMPLICIT to Hani
- run genuca, see command line above
- rebuild ICU4C
- refresh ICU4J collation data:
  (subset of instructions above for properties data refresh, except copies all coll/*)
    ~/svn.icu/uni62/bld$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    ~/svn.icu/uni62/bld$ mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt50b/coll
    ~/svn.icu/uni62/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt50b/coll/* /tmp/icu4j/com/ibm/icu/impl/data/icudt50b/coll
    ~/svn.icu/uni62/bld/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt50b
- run all tests with the *_SHORT.txt or the full files (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* test ICU, fix test code where necessary

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/uni62/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu4j/trunk/src/main/shared/data
or
- ~/svn.icu/uni62/dbg$ make ICU4J_ROOT=~/svn.icu4j/trunk/src icu4j-data-install

*** LayoutEngine script information
- skipped for Unicode 6.2: no new scripts

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C

---------------------------------------------------------------------------- ***

Future Unicode update

Tools simplified since the Unicode 6.1 update. See
- https://icu.unicode.org/design/props/ppucd
- http://bugs.icu-project.org/trac/wiki/Markus/ReviewTicket8972

* Unicode version numbers
- icutools/unicode/makedefs.sh was deleted, so one fewer place for version & path updates

* file preparation
- ucdcopy.py, idna2nrm.py and genpname/preparse.pl replaced by preparseucd.py:
- ~/svn.icu/tools/trunk/src/unicode$ py/preparseucd.py ~/uni61/20120118 ~/svn.icu/trunk/src ~/svn.icu/tools/trunk/src
- This writes files (especially ppucd.txt) to the ICU4C unidata and testdata subfolders.
- Check test file diffs for previously commented-out, known-failing data lines;
  probably need to keep those commented out.

* PropertyValueAliases.txt changes
- Script codes that are in ISO 15924 but not in Unicode are now listed in
  preparseucd.py, in the _scripts_only_in_iso15924 variable.
  If there are new ISO codes, then add them.
  If Unicode adds some of them, then remove them from the .py variable.

* UnicodeData.txt changes
- No more manual changes for CJK ranges for algorithmic names;
  those are now written to ppucd.txt and genprops reads them from there.

* generate core properties data files (makeprops.sh was deleted)
- ~/svn.icu/tools/trunk/dbg/unicode$ c/genprops/genprops ~/svn.icu/trunk/src

* no more manual updates of source/data/unidata/norm2/nfkc_cf.txt
- it is now generated by preparseucd.py

* no more separate idna2nrm.py run and manual copying to generate source/data/unidata/norm2/uts46.txt
- it is now generated by preparseucd.py
- make sure that the Unicode data folder passed into preparseucd.py
  includes a copy of http://www.unicode.org/Public/idna/6.1.0/IdnaMappingTable.txt
  (can be in some subfolder)

* generate normalization data files
- ~/svn.icu/trunk/dbg$ export LD_LIBRARY_PATH=~/svn.icu/trunk/dbg/lib
- ~/svn.icu/trunk/dbg$ SRC_DATA_IN=~/svn.icu/trunk/src/source/data/in
- ~/svn.icu/trunk/dbg$ UNIDATA=~/svn.icu/trunk/src/source/data/unidata
- ~/svn.icu/trunk/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfc.nrm     -s $UNIDATA/norm2 nfc.txt
- ~/svn.icu/trunk/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfkc.nrm    -s $UNIDATA/norm2 nfc.txt nfkc.txt
- ~/svn.icu/trunk/dbg$ bin/gennorm2 -o $SRC_DATA_IN/nfkc_cf.nrm -s $UNIDATA/norm2 nfc.txt nfkc.txt nfkc_cf.txt
- ~/svn.icu/trunk/dbg$ bin/gennorm2 -o $SRC_DATA_IN/uts46.nrm   -s $UNIDATA/norm2 nfc.txt uts46.txt

* build ICU (make install)
* build Unicode tools using CMake+make

* new way to call genuca (makeuca.sh was deleted)
- ~/svn.icu/tools/trunk/dbg/unicode$ c/genuca/genuca -i ~/svn.icu/trunk/dbg/data/out/build/icudt49l ~/svn.icu/trunk/src

---------------------------------------------------------------------------- ***

Unicode 6.1 update

*** ICU Trac

- ticket 8995 final update to Unicode 6.1
- ticket 8994 regenerate source/layout/CanonData.cpp

- ticket 8961 support Unicode "Age" value *names*
- ticket 8963 support multiple character name aliases & types

- ticket 8827 "update ICU to Unicode 6.1"
- C++ branches/markus/uni61 at r30864 from trunk at r30843
- Java branches/markus/uni61 at r30865 from trunk at r30863

*** Unicode version numbers
- makedata.mak
- uchar.h
  (configure.in & configure: have been modified to extract the version from uchar.h)
- com.ibm.icu.util.VersionInfo
- icutools/unicode/makedefs.sh
  + also review & update other definitions in that file,
    e.g. the ICU version in this path: BLD_DATA_FILES=$ICU_BLD/data/out/build/icudt49l

*** data files & enums & parser code

* file preparation

~/svn.icu/tools/trunk/src/unicode/c/genprops/misc$ ./ucdcopy.py ~/uni61/20111205/ucd ~/uni61/processed
- This prepares both unidata and testdata files in respective output subfolders.
- Check test file diffs for previously commented-out, known-failing data lines;
  probably need to keep those commented out.

* PropertyValueAliases.txt changes
- 11 new block names:
  Arabic_Extended_A
  Arabic_Mathematical_Alphabetic_Symbols
  Chakma
  Meetei_Mayek_Extensions
  Meroitic_Cursive
  Meroitic_Hieroglyphs
  Miao
  Sharada
  Sora_Sompeng
  Sundanese_Supplement
  Takri
  -> add to uchar.h
  -> add to UCharacter.UnicodeBlock IDs
    Eclipse find     UBLOCK_([^ ]+) = ([0-9]+), (/.+)
            replace  public static final int \1_ID = \2; \3
  -> add to UCharacter.UnicodeBlock objects
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
- 1 new Joining_Group (jg) value:
  Rohingya_Yeh
  -> uchar.h & UCharacter.JoiningGroup
- 2 new Line_Break (lb) values:
  CJ=Conditional_Japanese_Starter
  HL=Hebrew_Letter
  -> uchar.h & UCharacter.LineBreak
- 7 new scripts:
  sc ; Cakm      ; Chakma
  sc ; Merc      ; Meroitic_Cursive
  sc ; Mero      ; Meroitic_Hieroglyphs
  sc ; Plrd      ; Miao
  sc ; Shrd      ; Sharada
  sc ; Sora      ; Sora_Sompeng
  sc ; Takr      ; Takri
  -> remove these from SyntheticPropertyValueAliases.txt
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
- 2 new script codes from ISO 15924 http://www.unicode.org/iso15924/codechanges.html
  (added 2011-06-21)
  Khoj        322     Khojki
  Tirh        326     Tirhuta
    and another one added 2011-12-09
  Hluw        080     Anatolian Hieroglyphs (Luwian Hieroglyphs, Hittite Hieroglyphs)
  -> uscript.h
  -> com.ibm.icu.lang.UScript
    find     USCRIPT_([^ ]+) *= ([0-9]+),(.+)
    replace  public static final int \1 = \2;\3
  -> SyntheticPropertyValueAliases.txt
  -> add to expectedLong and expectedShort names in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

* UnicodeData.txt changes
- the last Unihan code point changes from U+9FCB to U+9FCC
  search for both 9FCB (end) and 9FCC (limit) (regex 9FC[BC], case-insensitive)
  + do change gennames.c
  + do change swapCJK() in ucol.cpp & ImplicitCEGenerator.java

* DerivedBidiClass.txt changes
- 2 new default-AL blocks:
#     Arabic Extended-A: U+08A0  -  U+08FF  (was default-R)
#     Arabic Mathematical Alphabetic Symbols:
#                       U+1EE00  - U+1EEFF  (was default-R)
- 2 new default-R blocks:
#     Meroitic Hieroglyphs:
#                        U+10980 - U+1099F
#     Meroitic Cursive:  U+109A0 - U+109FF
  -> should be picked up by the explicit data in the file

* NameAliases.txt changes
- from
    # Each line has two fields
    # First field: Code point
    # Second field: Alias
- to
    # Each line has three fields, as described here:
    #
    # First field:  Code point
    # Second field: Alias
    # Third field:  Type
- Also, the file previously allowed multiple aliases but only now does it
  actually provide multiple, even multiple of the same type. For example,
    FEFF;BYTE ORDER MARK;alternate
    FEFF;BOM;abbreviation
    FEFF;ZWNBSP;abbreviation
- This breaks our gennames parser, unames.icu data structure, and API.
  Fix gennames to only pick up "correction" aliases.
  New ticket #8963 for further changes.

* run genpname/preparse.pl (on Linux)
  + cd ~/svn.icu/tools/trunk/src/unicode/c/genpname
  + make sure that data.h is writable
  + perl preparse.pl ~/svn.icu/trunk/src > out.txt
  + preparse.pl shows no errors, out.txt Info and Warning lines look ok

* build ICU (make install)
  so that the tools build can pick up the new definitions from the installed header files.
* build Unicode tools (at least genpname) using CMake+make

* run genpname
  (builds both pnames.icu and propname_data.h)
- ~/svn.icu/tools/trunk/bld/unicode/c$ genpname/genpname -v -d ~/svn.icu/trunk/src/source/data/in
- ~/svn.icu/tools/trunk/bld/unicode/c$ genpname/genpname -v -d ~/svn.icu/trunk/src/source/common --csource

* build ICU (make install)
* build Unicode tools using CMake+make

* update source/data/unidata/norm2/nfkc_cf.txt
- follow the instructions in nfkc_cf.txt for updating it from DerivedNormalizationProps.txt

* update source/data/unidata/norm2/uts46.txt
- download http://www.unicode.org/Public/idna/6.1.0/IdnaMappingTable.txt
  to ~/svn.icu/tools/trunk/src/unicode/py
- adjust idna2nrm.py to remove "; NV8": For UTS #46, we do not care about "not valid in IDNA2008".
- ~/svn.icu/tools/trunk/src/unicode/py$ ./idna2nrm.py
- ~/svn.icu/tools/trunk/src/unicode/py$ cp uts46.txt ~/svn.icu/trunk/src/source/data/unidata/norm2

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0..6.1: U+2260, U+226E, U+226F
- nothing new in 6.1, no test file to update

* generate core properties data files
- in initial bootstrapping, change the UCA version
  in source/data/unidata/FractionalUCA.txt to match the new Unicode version
- ~/svn.icu/tools/trunk/src/unicode$ ./makeprops.sh ~/svn.icu/trunk/src ~/svn.icu/trunk/bld
- rebuild ICU & tools
  + if genrb fails to build coll/root.res with an U_INVALID_FORMAT_ERROR,
    check if the UCA version in FractionalUCA.txt matches the new Unicode version
    (see step above)
- run makeuca.sh so that genuca picks up the new case mappings and nfc.nrm:
  ~/svn.icu/tools/trunk/src/unicode$ ./makeuca.sh ~/svn.icu/trunk/src ~/svn.icu/trunk/bld
- rebuild ICU & tools

* update Java data files
- refresh just the UCD-related files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/trunk/bld$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt49l
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt49b
    mkdir -p ./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt49b
    echo pnames.icu ubidi.icu ucase.icu uprops.icu > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt49l.dat ./out/icu4j/icudt49b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt49l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt49b
    mv ./out/icu4j/"com/ibm/icu/impl/data/icudt49b/zoneinfo64.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt49b/metaZones.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt49b/timezoneTypes.res" ./out/icu4j/"com/ibm/icu/impl/data/icudt49b/windowsZones.res" "./out/icu4j/tzdata/com/ibm/icu/impl/data/icudt49b"
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt49b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
    jar cf ./out/icu4j/icutzdata.jar -C ./out/icu4j/tzdata com/ibm/icu/impl/data/icudt49b/
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icutzdata.jar /tmp/icu4j/main/shared/data
    make[1]: Leaving directory `/home/mscherer/svn.icu/trunk/bld/data'
- copy the big-endian Unicode data files to another location,
  separate from the other data files
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt49b/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt49b/brkitr
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt49b/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt49b
    ~/svn.icu/trunk/bld/data/out/icu4j$ rm /tmp/icu4j/com/ibm/icu/impl/data/icudt49b/cnvalias.icu
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt49b/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/icudt49b
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt49b/coll/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt49b/coll
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt49b/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/icudt49b/brkitr
- refresh ICU4J
    ~/svn.icu/trunk/bld/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt49b

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode

* test ICU so far, fix test code where necessary
- temporarily ignore collation issues that look like UCA/UCD mismatches,
  until UCA data is updated

* UCA

- get output from Mark's tools; look in
    http://www.unicode.org/Public/UCA/6.1.0/CollationAuxiliary-<dev. version>.txt
- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
  (note removing the underscore before "Rules")
- update (ICU)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  with output from Mark's Unicode tools (..._CLDR_..._SHORT.txt)
- check test file diffs for previously commented-out, known-failing data lines;
  probably need to keep those commented out
- check FractionalUCA.txt for manual changes of lead bytes from IMPLICIT to Hani
- run makeuca.sh:
  ~/svn.icu/tools/trunk/src/unicode$ ./makeuca.sh ~/svn.icu/trunk/src ~/svn.icu/trunk/bld
- rebuild ICU4C
- refresh ICU4J collation data:
  (subset of instructions above for properties data refresh, except copies all coll/*)
    ~/svn.icu/trunk/bld$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    ~/svn.icu/trunk/bld$ mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt49b/coll
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt49b/coll/* /tmp/icu4j/com/ibm/icu/impl/data/icudt49b/coll
    ~/svn.icu/trunk/bld/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt49b
- run all tests with the *_SHORT.txt or the full files (the full ones have comments, useful for debugging)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/trunk/bld$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu4j/trunk/src/main/shared/data
or
- ~/svn.icu/trunk/bld$ make ICU4J_ROOT=~/svn.icu4j/trunk/src icu4j-data-install

*** LayoutEngine script information

(For details see the Unicode 5.2 change log below.)

* Run icu4j-tools: com.ibm.icu.dev.tool.layout.ScriptNameBuilder.
  This generates LEScripts.h, LELanguages.h, ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp
  in the working directory.
  (It also generates ScriptRunData.cpp, which is no longer needed.)

  The generated files have a current copyright date and "@draft" statement.

- diff current <icu>/source/layout files vs. generated ones
    ~/svn.icu4j/trunk/src$ kdiff3 ~/svn.icu/trunk/src/source/layout tools/misc/src/com/ibm/icu/dev/tool/layout
  review and manually merge desired changes;
  fix gratuitous changes, incorrect @draft and missing aliases;
  Unicode-derived script codes should be "born stable" like constants in uchar.h, uscript.h etc.
- if you just copy the above files, then
  fix mixed line endings, review the diffs as above and restore changes to API tags etc.;
  manually re-add the "Indic script xyz v.2" tags in ScriptAndLanguageTags.h

*** merge the Unicode update branches back onto the trunk
- do not merge the icudata.jar and testdata.jar,
  instead rebuild them from merged & tested ICU4C

---------------------------------------------------------------------------- ***

ICU 4.8 (no Unicode update, just new script codes)

* 9 new script codes from ISO 15924 http://www.unicode.org/iso15924/codechanges.html
  (added 2010-12-21)
    Afak    439     Afaka
    Jurc    510     Jurchen
    Mroo    199     Mro, Mru
    Nshu    499     Nüshu
    Shrd    319     Sharada, Śāradā
    Sora    398     Sora Sompeng
    Takr    321     Takri, Ṭākrī, Ṭāṅkrī
    Tang    520     Tangut
    Wole    480     Woleai
  -> uscript.h
  -> com.ibm.icu.lang.UScript
    find     USCRIPT_([^ ]+) *= ([0-9]+),(.+)
    replace  public static final int \1 = \2;\3
  -> genpname/SyntheticPropertyValueAliases.txt
  -> add to expectedLong and expectedShort names in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java

* run genpname/preparse.pl (on Linux)
  + cd ~/svn.icu/tools/trunk/src/unicode/c/genpname
  + make sure that data.h is writable
  + perl preparse.pl ~/svn.icu/trunk/src > out.txt
  + preparse.pl shows no errors, out.txt Info and Warning lines look ok

* rebuild Unicode tools (at least genpname) using make
- You might first need to "make install" ICU so that the tools build can pick
  up the new definitions from the installed header files.

* run genpname
  (builds both pnames.icu and propname_data.h)
- ~/svn.icu/tools/trunk/bld/unicode/c$ genpname/genpname -v -d ~/svn.icu/trunk/src/source/data/in
- ~/svn.icu/tools/trunk/bld/unicode/c$ genpname/genpname -v -d ~/svn.icu/trunk/src/source/common --csource
- rebuild ICU & tools

* run genprops
- ~/svn.icu/tools/trunk/bld/unicode/c$ genprops/genprops -d ~/svn.icu/trunk/src/source/data/in -s ~/svn.icu/trunk/src/source/data/unidata -i ~/svn.icu/trunk/dbg/data/out/build/icudt48l -u 6.0
- ~/svn.icu/tools/trunk/bld/unicode/c$ genprops/genprops -d ~/svn.icu/trunk/src/source/common --csource -s ~/svn.icu/trunk/src/source/data/unidata -i ~/svn.icu/trunk/dbg/data/out/build/icudt48l -u 6.0
- rebuild ICU & tools

* update Java data files
- refresh just the UCD-related files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/trunk/dbg$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- copy the big-endian Unicode data files to another location,
  separate from the other data files
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt48b
    ~/svn.icu/trunk/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt48b/pnames.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt48b
    ~/svn.icu/trunk/dbg/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt48b/uprops.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt48b
- refresh ICU4J
    ~/svn.icu/trunk/dbg/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt48b

* should have updated the layout engine script codes but forgot

---------------------------------------------------------------------------- ***

Unicode 6.0 update

*** related ICU Trac tickets

7264 Unicode 6.0 Update

*** Unicode version numbers
- makedata.mak
- uchar.h
  (configure.in & configure: have been modified to extract the version from uchar.h)
- com.ibm.icu.util.VersionInfo

*** data files & enums & parser code

* file preparation

~/svn.icu/tools/trunk/src/unicode/c/genprops/misc$ ./ucdcopy.py ~/uni60/20100720/ucd ~/uni60/processed
- This now prepares both unidata and testdata files in respective output subfolders.

* PropertyAliases.txt changes
- new Script_Extensions property defined in the new ScriptExtensions.txt file
  but not listed in PropertyAliases.txt; reported to unicode.org;
  -> added to tools/trunk/src/unicode/c/genpname/SyntheticPropertyAliases.txt
    scx; Script_Extensions
  -> uchar.h with new UProperty section
  -> com.ibm.icu.lang.UProperty, parallel with uchar.h

* PropertyValueAliases.txt changes
- 12 new block names:
  Alchemical_Symbols
  Bamum_Supplement
  Batak
  Brahmi
  CJK_Unified_Ideographs_Extension_D
  Emoticons
  Ethiopic_Extended_A
  Kana_Supplement
  Mandaic
  Miscellaneous_Symbols_And_Pictographs
  Playing_Cards
  Transport_And_Map_Symbols
  -> add to uchar.h
  -> add to UCharacter.UnicodeBlock
    Eclipse find     UBLOCK_([^ ]+) = [0-9]+, (/.+)
            replace  public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
- Joining_Group (jg) values:
  Teh_Marbuta_Goal becomes the new canonical value for the old Hamza_On_Heh_Goal which becomes an alias
  -> uchar.h & UCharacter.JoiningGroup
- 3 new scripts:
  sc ; Batk      ; Batak
  sc ; Brah      ; Brahmi
  sc ; Mand      ; Mandaic
  -> remove these from SyntheticPropertyValueAliases.txt
  -> add alias USCRIPT_MANDAIC to USCRIPT_MANDAEAN
  -> fix expectedLong names in cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
- 13 new script codes from ISO 15924 http://www.unicode.org/iso15924/codechanges.html
  (added 2009-11-11..2010-07-18)
  Bass        259     Bassa Vah
  Dupl        755     Duployan shortand
  Elba        226     Elbasan
  Gran        343     Grantha
  Kpel        436     Kpelle
  Loma        437     Loma
  Mend        438     Mende
  Merc        101     Meroitic Cursive
  Narb        106     Old North Arabian
  Nbat        159     Nabataean
  Palm        126     Palmyrene
  Sind        318     Sindhi
  Wara        262     Warang Citi
  -> uscript.h
  -> com.ibm.icu.lang.UScript
    find     USCRIPT_([^ ]+) *= ([0-9]+),(.+)
    replace  public static final int \1 = \2;\3
  -> SyntheticPropertyValueAliases.txt
  -> add to expectedLong and expectedShort names in cintltst/cucdapi.c/TestUScriptCodeAPI()
      and in com.ibm.icu.dev.test.lang.TestUScript.java
- ISO 15924 name change
  Mero        100     Meroitic Hieroglyphs (was Meroitic)
  -> add new alias USCRIPT_MEROITIC_HIEROGLYPHS to USCRIPT_MEROITIC
- property value alias added for Cham, was already moved out of SyntheticPropertyValueAliases.txt

* UnicodeData.txt changes
- new CJK block:
  2B740;<CJK Ideograph Extension D, First>;Lo;0;L;;;;;N;;;;;
  2B81D;<CJK Ideograph Extension D, Last>;Lo;0;L;;;;;N;;;;;
  -> add to tools/trunk/src/unicode/c/gennames/gennames.c, with new ucdVersion

* build Unicode tools using CMake+make

* run genpname/preparse.pl (on Linux)
  + cd ~/svn.icu/tools/trunk/src/unicode/c/genpname
  + make sure that data.h is writable
  + perl preparse.pl ~/svn.icu/trunk/src > out.txt
  + preparse.pl shows no errors, out.txt Info and Warning lines look ok

* rebuild Unicode tools (at least genpname) using make
- You might first need to "make install" ICU so that the tools build can pick
  up the new definitions from the installed header files.

* run genpname
- ~/svn.icu/tools/trunk/bld/unicode$ c/genpname/genpname -v -d ~/svn.icu/trunk/src/source/data/in
- rebuild ICU & tools

* update source/data/unidata/norm2/nfkc_cf.txt
- follow the instructions in nfkc_cf.txt for updating it from DerivedNormalizationProps.txt

* update source/data/unidata/norm2/uts46.txt
- download http://www.unicode.org/Public/idna/6.0.0/IdnaMappingTable.txt
  to ~/svn.icu/tools/trunk/src/unicode/py
- adjust idna2nrm.py to handle new disallowed_STD3_valid and disallowed_STD3_mapped values
- ~/svn.icu/tools/trunk/src/unicode/py$ ./idna2nrm.py
- ~/svn.icu/tools/trunk/src/unicode/py$ cp uts46.txt ~/svn.icu/trunk/src/source/data/unidata/norm2

* update uts46test.cpp and UTS46Test.java if there are new characters that are equivalent to
  sequences with non-LDH ASCII (that is, their decompositions contain '=' or similar)
- grep IdnaMappingTable.txt or uts46.txt for "disallowed_STD3_valid" on non-ASCII characters
- Unicode 6.0: U+2260, U+226E, U+226F

* generate core properties data files
- ~/svn.icu/tools/trunk/src/unicode$ ./makeprops.sh ~/svn.icu/trunk/src ~/svn.icu/trunk/bld
- rebuild ICU & tools
- run makeuca.sh so that genuca picks up the new nfc.nrm:
  ~/svn.icu/tools/trunk/src/unicode$ ./makeuca.sh ~/svn.icu/trunk/src ~/svn.icu/trunk/bld
- rebuild ICU & tools

* implement new Script_Extensions property (provisional)
- parser & generator: genprops & uprops.icu
- uscript.h, uprops.h, uchar.c, uniset_props.cpp and others, plus cintltst/cucdapi.c & intltest/usettest.cpp
- UScript.java, UCharacterProperty.java, UnicodeSet.java, TestUScript.java, UnicodeSetTest.java

* switch ubidi.icu, ucase.icu and uprops.icu from UTrie to UTrie2
- (one-time change)
- genbidi/gencase/genprops tools changes
- re-run makeprops.sh (see above)
- UCharacterProperty.java, UCharacterTypeIterator.java,
  UBiDiProps.java, UCaseProps.java, and several others with minor changes;
  UCharacterPropertyReader.java deleted and its code folded into UCharacterProperty.java

* update Java data files
- refresh just the UCD-related files, just to be safe
- see (ICU4C)/source/data/icu4j-readme.txt
- mkdir /tmp/icu4j
- ~/svn.icu/trunk/bld$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
  output:
    ...
    Unicode .icu files built to ./out/build/icudt45l
    mkdir -p ./out/icu4j/com/ibm/icu/impl/data/icudt45b
    echo ubidi.icu ucase.icu uprops.icu > ./out/icu4j/add.txt
    LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg ./out/tmp/icudt45l.dat ./out/icu4j/icudt45b.dat -a ./out/icu4j/add.txt -s ./out/build/icudt45l -x '*' -tb -d ./out/icu4j/com/ibm/icu/impl/data/icudt45b
    jar cf ./out/icu4j/icudata.jar -C ./out/icu4j com/ibm/icu/impl/data/icudt45b
    mkdir -p /tmp/icu4j/main/shared/data
    cp ./out/icu4j/icudata.jar /tmp/icu4j/main/shared/data
- copy the big-endian Unicode data files to another location,
  separate from the other data files
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt45b/coll
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt45b/brkitr
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt45b/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt45b
    ~/svn.icu/trunk/bld/data/out/icu4j$ rm /tmp/icu4j/com/ibm/icu/impl/data/icudt45b/cnvalias.icu
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt45b/*.nrm /tmp/icu4j/com/ibm/icu/impl/data/icudt45b
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt45b/coll/*.icu /tmp/icu4j/com/ibm/icu/impl/data/icudt45b/coll
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt45b/brkitr/* /tmp/icu4j/com/ibm/icu/impl/data/icudt45b/brkitr
- refresh ICU4J
    ~/svn.icu/trunk/bld/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt45b

* refresh Java test .txt files
- copy new .txt files into ICU4J's main/tests/core/src/com/ibm/icu/dev/data/unicode

* un-hardcode normalization skippable (NF*_Inert) test data
- removes one manual step from the Unicode upgrade, and removes dependency on one of Mark's tools

* copy updated break iterator test files
- now handled by early ucdcopy.py and
  copying the uni60/processed/testdata files to ~/svn.icu/trunk/src/source/test/testdata
  (old instructions:
   copy from (Unicode 6.0)/ucd/auxiliary/*BreakTest-6....txt
   to ~/svn.icu/trunk/src/source/test/testdata)
- they are not used in ICU4J

* UCA

- get output from Mark's tools; look in
    http://www.unicode.org/~book/incoming/mark/uca6.0.0/
    http://www.macchiato.com/unicode/utc/additional-uca-files
    http://www.unicode.org/Public/UCA/6.0.0/
    http://www.unicode.org/~mdavis/uca/
- update source/data/unidata/FractionalUCA.txt with FractionalUCA_SHORT.txt
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt
- update Han-implicit ranges for new CJK extensions:
  swapCJK() in ucol.cpp & ImplicitCEGenerator.java
- genuca: allow bytes 02 for U+FFFE, new merge-sort character;
  do not add it into invuca so that tailoring primary-after an ignorable works
- genuca: permit space between [variable top] bytes
- ucol.cpp: treat noncharacters like unassigned rather than ignorable
- run makeuca.sh:
  ~/svn.icu/tools/trunk/src/unicode$ ./makeuca.sh ~/svn.icu/trunk/src ~/svn.icu/trunk/bld
- rebuild ICU4C
- refresh ICU4J collation data:
  (subset of instructions above for properties data refresh, except copies all coll/*)
    ~/svn.icu/trunk/bld$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
    mkdir -p /tmp/icu4j/com/ibm/icu/impl/data/icudt45b/coll
    ~/svn.icu/trunk/bld/data/out/icu4j$ cp com/ibm/icu/impl/data/icudt45b/coll/* /tmp/icu4j/com/ibm/icu/impl/data/icudt45b/coll
    ~/svn.icu/trunk/bld/data/out/icu4j$ jar uf ~/svn.icu4j/trunk/src/main/shared/data/icudata.jar -C /tmp/icu4j com/ibm/icu/impl/data/icudt45b
- update (ICU)/source/test/testdata/CollationTest_*.txt
  and (ICU4J)/main/tests/collate/src/com/ibm/icu/dev/data/CollationTest_*.txt
  with output from Mark's Unicode tools
- run all tests with the *_SHORT.txt or the full files (the full ones have comments)
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

* When refreshing all of ICU4J data from ICU4C
- ~/svn.icu/trunk/bld$ make ICU4J_ROOT=/tmp/icu4j icu4j-data-install
- cp /tmp/icu4j/main/shared/data/icudata.jar ~/svn.icu4j/trunk/src/main/shared/data
or
- ~/svn.icu/trunk/bld$ make ICU4J_ROOT=~/svn.icu4j/trunk/src icu4j-data-install

*** LayoutEngine script information

(For details see the Unicode 5.2 change log below.)

* Run ICU4J com.ibm.icu.dev.tool.layout.ScriptNameBuilder. This generates LEScripts.h, LELanguages.h,
ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp in the working directory. (It also generates
ScriptRunData.cpp, which is no longer needed.)

The generated files have a current copyright date and "@draft" statement.

* copy the above files into <icu>/source/layout, replacing the old files.
* fix mixed line endings
* review the diffs and fix incorrect @draft and missing aliases;
  Unicode-derived script codes should be "born stable" like constants in uchar.h, uscript.h etc.
* manually re-add the "Indic script xyz v.2" tags in ScriptAndLanguageTags.h

---------------------------------------------------------------------------- ***

Unicode 5.2 update

*** related ICU Trac tickets

7084 Unicode 5.2

7167 verify collation bytes
7235 Java test NAME_ALIAS
7236 Java DerivedCoreProperties.txt test
7237 Java BidiTest.txt
7238 UTrie2 in core unidata
7239 test for tailoring gaps
7240 Java fix CollationMiscTest
7243 update layout engine for Unicode 5.2

*** Unicode version numbers
- makedata.mak
- uchar.h
- configure.in & configure
- update ucdVersion in gennames.c if an algorithmic range changes

*** data files & enums & parser code

* file preparation

python source\tools\genprops\misc\ucdcopy.py "C:\Documents and Settings\mscherer\My Documents\unicode\ucd\5.2.0" C:\svn\icuproj\icu\trunk\source\data\unidata
- includes finding files regardless of version numbers,
  copying them, and performing the equivalent processing of the
  ucdstrip and ucdmerge tools on the desired set of files

* notes on changes
- PropertyAliases.txt
  moved from numeric to enumerated:
    ccc       ; Canonical_Combining_Class
  new string properties:
    NFKC_CF   ; NFKC_Casefold
    Name_Alias; Name_Alias
  new binary properties:
    Cased     ; Cased
    CI        ; Case_Ignorable
    CWCF      ; Changes_When_Casefolded
    CWCM      ; Changes_When_Casemapped
    CWKCF     ; Changes_When_NFKC_Casefolded
    CWL       ; Changes_When_Lowercased
    CWT       ; Changes_When_Titlecased
    CWU       ; Changes_When_Uppercased
  new CJK Unihan properties (not supported by ICU)
- PropertyValueAliases.txt
  new block names
  new scripts
  one script code change:
    sc ; Qaai      ; Inherited
    ->
    sc ; Zinh      ; Inherited                        ; Qaai
  new Line_Break (lb) value:
    lb ; CP        ; Close_Parenthesis
  new Joining_Group (jg) values: Farsi_Yeh, Nya
  other new values:
    ccc; 214; ATA  ; Attached_Above
- DerivedBidiClass.txt
  new default-R range: U+1E800 - U+1EFFF
- UnicodeData.txt
  all of the ISO comments are gone
  new CJK block end:
    9FC3;<CJK Ideograph, Last> -> 9FCB;<CJK Ideograph, Last>
  new CJK block:
    2A700;<CJK Ideograph Extension C, First>;Lo;0;L;;;;;N;;;;;
    2B734;<CJK Ideograph Extension C, Last>;Lo;0;L;;;;;N;;;;;

* genpname
- run preparse.pl
  + cd \svn\icuproj\icu\trunk\source\tools\genpname
  + make sure that data.h is writable
  + perl preparse.pl \svn\icuproj\icu\trunk > out.txt
  + preparse.pl complains with errors like the following:
      Error: sc:Egyp already set to Egyptian_Hieroglyphs, cannot set to Egyp at preparse.pl line 1322, <GEN6> line 34.
    This is because ICU 4.0 had scripts from ISO 15924 which are now
    added to Unicode 5.2, and the Perl script shows a conflict between SyntheticPropertyValueAliases.txt
    and PropertyValueAliases.txt.
    -> Removed duplicate script entries from SyntheticPropertyValueAliases.txt:
       Egyp, Java, Lana, Mtei, Orkh, Armi, Avst, Kthi, Phli, Prti, Samr, Tavt
  + preparse.pl complains with errors about block names missing from uchar.h; add them

* uchar.h & uscript.h & uprops.h & uprops.c & genprops
- new block & script values
  + 26 new blocks
    copy new blocks from Blocks.txt
    MS VC++ 2008 regular expression:
      find "^{[0-9A-F]+}\.\.{[0-9A-F]+}; {[A-Z].+}$"
      replace with "    UBLOCK_\3 = 172, /*[\1]*/"
  + several new script values already added in ICU 4.0 for ISO 15924 coverage
    (removed from SyntheticPropertyValueAliases.txt, see genpname notes above)
  + 3 new script values added for ISO 15924 and Unicode 5.2 coverage
  + 1 new script value added for ISO 15924 coverage (not in Unicode 5.2)
    (added to SyntheticPropertyValueAliases.txt)
- new Joining Group (JG) values: Farsi_Yeh, Nya
- new Line_Break (lb) value:
    lb ; CP        ; Close_Parenthesis

* hardcoded Unihan range end/limit
- Unihan range end moves from 9FC3 to 9FCB
  search for both 9FC3 (end) and 9FC4 (limit) (regex 9FC[34], case-insensitive)
  + do change gennames.c

* Compare definitions of new binary properties with what we used to use
  in algorithms, to see if the definitions changed.
- Verified that definitions for Cased and Case_Ignorable are unchanged.
  The gencase tool now parses the newly public Case_Ignorable values
  in case the definition changes in the future.

* uchar.c & uprops.h & uprops.c & genprops
- new numeric values that didn't exist in Unicode data before:
    1/7, 1/9, 1/10, 3/10, 1/16, 3/16
  the ones with denominators >9 cannot be supported by uprops.icu formatVersion 5,
  therefore redesign the encoding of numeric types and values for formatVersion 6;
  design for simple numbers up to at least 144 ("one gross"),
  large values up to at least 10^20,
  and fractions with numerators -1..17 and denominators 1..16
  to cover current and expected future values
  (e.g., more Han numeric values, Meroitic twelfths)

* reimplement Hangul_Syllable_Type for new Jamo characters
- the old code assumed that all Jamo characters are in the 11xx block
- Unicode 5.2 fills holes there and adds new Jamo characters in
    A960..A97F; Hangul Jamo Extended-A
  and in
    D7B0..D7FF; Hangul Jamo Extended-B
- Hangul_Syllable_Type can be trivially derived from a subset of
  Grapheme_Cluster_Break values

* build Unicode data source code for hardcoding core data
C:\svn\icuproj\icu\trunk\source\data>NMAKE /f makedata.mak ICUMAKE=\svn\icuproj\icu\trunk\source\data\ CFG=x86\release uni-core-data

ICU data make path is \svn\icuproj\icu\trunk\source\data\
ICU root path is \svn\icuproj\icu\trunk
Information: cannot find "ucmlocal.mk". Not building user-additional converter files.
Information: cannot find "brklocal.mk". Not building user-additional break iterator files.
Information: cannot find "reslocal.mk". Not building user-additional resource bundle files.
Information: cannot find "collocal.mk". Not building user-additional resource bundle files.
Information: cannot find "rbnflocal.mk". Not building user-additional resource bundle files.
Information: cannot find "trnslocal.mk". Not building user-additional transliterator files.
Information: cannot find "misclocal.mk". Not building user-additional miscellaenous files.
Information: cannot find "spreplocal.mk". Not building user-additional stringprep files.
Creating data file for Unicode Property Names
Creating data file for Unicode Character Properties
Creating data file for Unicode Case Mapping Properties
Creating data file for Unicode BiDi/Shaping Properties
Creating data file for Unicode Normalization
Unicode .icu files built to "\svn\icuproj\icu\trunk\source\data\out\build\icudt43l"
Unicode .c source files built to "\svn\icuproj\icu\trunk\source\data\out\tmp"

- copy the .c source files to C:\svn\icuproj\icu\trunk\source\common
  and rebuild the common library

*** UCA

- update FractionalUCA.txt with new canonical closure (output from Mark's Unicode tools)
- update source/data/unidata/UCARules.txt with UCA_Rules_SHORT.txt from Mark's Unicode tools
- update source/test/testdata/CollationTest_*.txt with output from Mark's Unicode tools
[ Begin obsolete instructions:
  Starting with UCA 5.2, we use the CollationTest_*_SHORT.txt files not the *_STUB.txt files.
    - generate the source/test/testdata/CollationTest_*_STUB.txt files via source/tools/genuca/genteststub.py
      on Windows:
        python C:\svn\icuproj\icu\trunk\source\tools\genuca\genteststub.py CollationTest_NON_IGNORABLE_SHORT.txt CollationTest_NON_IGNORABLE_STUB.txt
        python C:\svn\icuproj\icu\trunk\source\tools\genuca\genteststub.py CollationTest_SHIFTED_SHORT.txt CollationTest_SHIFTED_STUB.txt
  End obsolete instructions]
- run all tests with the *_SHORT.txt or the full files (the full ones have comments)
  not just the *_STUB.txt files
- note on intltest: if collate/UCAConformanceTest fails, then
  utility/MultithreadTest/TestCollators will fail as well;
  fix the conformance test before looking into the multi-thread test

*** Implement Cased & Case_Ignorable properties
- via UProperty; call ucase.h functions ucase_getType() and ucase_getTypeOrIgnorable()
- Problem: These properties should be disjoint, but aren't
- UTC 2009nov decision: skip all Case_Ignorable regardless of whether they are Cased or not
- change ucase.icu to be able to store any combination of Cased and Case_Ignorable

*** Implement Changes_When_Xyz properties
- without stored data

*** Implement Name_Alias property
- add it as another name field in unames.icu
- make it available via u_charName() and UCharNameChoice and
- consider it in u_charFromName()

*** Break iterators

* Update break iterator rules to new UAX versions and new property values
* Update source/test/testdata/<boundary>Test.txt files from <unicode.org ucd>/ucd/auxiliary

*** new BidiTest file
- review format and data
- copy BidiTest.txt to source/test/testdata
- write test code using this data
- fix ICU code where it fails the conformance test

*** Java
- generally, find and update code corresponding to C/C++
- UCharacter.UnicodeBlock constants:
  a) add an _ID integer per new block, update COUNT
  b) add a class instance per new block
     Visual Studio regex:
        find            UBLOCK_{[^ ]+} = [0-9]+, {/.+}
        replace with    public static final UnicodeBlock \1 = new UnicodeBlock("\1", \1_ID); \2
- CHAR_NAME_ALIAS -> UCharacter.getNameAlias() and getCharFromNameAlias()

- port test changes to Java

*** LayoutEngine script information

(For comparison, see the Unicode 5.1 update: http://bugs.icu-project.org/trac/changeset/23833)

* Run ICU4J com.ibm.icu.dev.tool.layout.ScriptNameBuilder. This generates LEScripts.h, LELanguages.h,
ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp in the working directory. (It also generates
ScriptRunData.cpp, which is no longer needed.)

The generated files have a current copyright date and "@draft" statement.

-> Eric Mader wrote in email on 20090930:
    "I think the tool has been modified to update @draft to @stable for
     older scripts and to add @draft for new scripts.
     (I worked with an intern on this last year.)
     You should check the output after you run it."

* copy the above files into <icu>/source/layout, replacing the old files.
* fix mixed line endings
* review the diffs and fix incorrect @draft and missing aliases
* manually re-add the "Indic script xyz v.2" tags in ScriptAndLanguageTags.h

Add new default entries to the indicClassTables array in <icu>/source/layout/IndicClassTables.cpp
and the complexTable array in <icu>/source/layoutex/ParagraphLayout.cpp. (This step should be automated...)

-> Eric Mader wrote in email on 20090930:
    "This is just a matter of making sure that all the per-script tables have
     entries for any new scripts that were added.
     If any new Indic characters were added, then the class tables in
     IndicClassTables.cpp should be updated to reflect this.
     John Emmons should know how to do this if it's required."

* rebuild the layout and layoutex libraries.

*** Documentation
- Update User Guide
  + Jamo_Short_Name, sfc->scf, binary property value aliases

---------------------------------------------------------------------------- ***

Unicode 5.1 update

*** related ICU Trac tickets

5696 Update to Unicode 5.1

*** Unicode version numbers
- makedata.mak
- uchar.h
- configure.in & configure
- update ucdVersion in gennames.c if an algorithmic range changes

*** data files & enums & parser code

* file preparation
- ucdstrip:
    DerivedCoreProperties.txt
    DerivedNormalizationProps.txt
    NormalizationTest.txt
    PropList.txt
    Scripts.txt
    GraphemeBreakProperty.txt
    SentenceBreakProperty.txt
    WordBreakProperty.txt
- ucdstrip and ucdmerge:
    EastAsianWidth.txt
    LineBreak.txt

* my ucd2unidata.bat (needs to be updated each time with UCD and file version numbers)
copy 5.1.0\ucd\BidiMirroring.txt ..\unidata\
copy 5.1.0\ucd\Blocks.txt ..\unidata\
copy 5.1.0\ucd\CaseFolding.txt ..\unidata\
copy 5.1.0\ucd\DerivedAge.txt ..\unidata\
copy 5.1.0\ucd\extracted\DerivedBidiClass.txt ..\unidata\
copy 5.1.0\ucd\extracted\DerivedJoiningGroup.txt ..\unidata\
copy 5.1.0\ucd\extracted\DerivedJoiningType.txt ..\unidata\
copy 5.1.0\ucd\extracted\DerivedNumericValues.txt ..\unidata\
copy 5.1.0\ucd\NormalizationCorrections.txt ..\unidata\
copy 5.1.0\ucd\PropertyAliases.txt ..\unidata\
copy 5.1.0\ucd\PropertyValueAliases.txt ..\unidata\
copy 5.1.0\ucd\SpecialCasing.txt ..\unidata\
copy 5.1.0\ucd\UnicodeData.txt ..\unidata\

ucdstrip < 5.1.0\ucd\DerivedCoreProperties.txt > ..\unidata\DerivedCoreProperties.txt
ucdstrip < 5.1.0\ucd\DerivedNormalizationProps.txt > ..\unidata\DerivedNormalizationProps.txt
ucdstrip < 5.1.0\ucd\NormalizationTest.txt > ..\unidata\NormalizationTest.txt
ucdstrip < 5.1.0\ucd\PropList.txt > ..\unidata\PropList.txt
ucdstrip < 5.1.0\ucd\Scripts.txt > ..\unidata\Scripts.txt
ucdstrip < 5.1.0\ucd\auxiliary\GraphemeBreakProperty.txt > ..\unidata\GraphemeBreakProperty.txt
ucdstrip < 5.1.0\ucd\auxiliary\SentenceBreakProperty.txt > ..\unidata\SentenceBreakProperty.txt
ucdstrip < 5.1.0\ucd\auxiliary\WordBreakProperty.txt > ..\unidata\WordBreakProperty.txt
ucdstrip < 5.1.0\ucd\EastAsianWidth.txt | ucdmerge > ..\unidata\EastAsianWidth.txt
ucdstrip < 5.1.0\ucd\LineBreak.txt | ucdmerge > ..\unidata\LineBreak.txt

* genpname
- run preparse.pl
  + cd \svn\icuproj\icu\uni51\source\tools\genpname
  + make sure that data.h is writable
  + perl preparse.pl \svn\icuproj\icu\uni51 > out.txt
  + preparse.pl complains with errors like the following:
      Error: sc:Cari already set to Carian, cannot set to Cari at preparse.pl line 1308, <GEN6> line 30.
    This is because ICU 3.8 had scripts from ISO 15924 which are now
    added to Unicode 5.1, and the script shows a conflict between SyntheticPropertyValueAliases.txt
    and PropertyValueAliases.txt.
    -> Removed duplicate script entries from SyntheticPropertyValueAliases.txt:
       Cari, Cham, Kali, Lepc, Lyci, Lydi, Olck, Rjng, Saur, Sund, Vaii
  + PropertyValueAliases.txt now explicitly contains values for boolean properties:
      N/Y, No/Yes, F/T, False/True
    -> Added N/No and Y/Yes to preparse.pl function read_PropertyValueAliases.
       It will use further values from the file if present.

* uchar.h & uscript.h & uprops.h & uprops.c & genprops
- new block & script values
  + 17 new blocks
  + 11 new script values already added in ICU 3.8 for ISO 15924 coverage
    (removed from SyntheticPropertyValueAliases.txt)
  + 14 new script values added for ISO 15924 coverage (not in Unicode 5.1)
    (added to SyntheticPropertyValueAliases.txt)
- uprops.icu (uprops.h) only provides 7 bits for script codes.
  In ICU 4.0 there are USCRIPT_CODE_LIMIT=130 script codes now.
  There is none above 127 yet which is the script code for an
  assigned Unicode character, so ICU 4.0 uprops.icu does not store any
  script code values greater than 127.
  However, it does need to store the maximum script value=USCRIPT_CODE_LIMIT-1=129
  in a parallel bit field, and that overflows now.
  Also, future values >=128 would be incompatible anyway.
  uprops.h is modified to move around several of the bit fields
  in the properties vector words, and now uses 8 bits for the script code.
  Two other bit fields also grow to accommodate future growth:
  Block (current count: 172) grows from 8 to 9 bits,
  and Word_Break grows from 4 to 5 bits.
- renamed property Simple_Case_Folding (sfc->scf)
  + nothing to be done: handled as normal alias
- new property JSN Jamo_Short_Name
  + no new API: only contributes to the Name property
- new Grapheme_Cluster_Break (GCB) value: SM=SpacingMark
- new Joining Group (JG) value: Burushashki_Yeh_Barree
- new Sentence_Break (SB) values:
    SB ; CR        ; CR
    SB ; EX        ; Extend
    SB ; LF        ; LF
    SB ; SC        ; SContinue
- new Word_Break (WB) values:
    WB ; CR        ; CR
    WB ; Extend    ; Extend
    WB ; LF        ; LF
    WB ; MB        ; MidNumLet

* Further changes in the 2008-02-29 update:
- Default_Ignorable_Code_Point: The new file removes Cc, Cs, noncharacters from DICP
  because they should not normally be invisible.
- new Joining Group (JG) value Burushashki_Yeh_Barree was renamed to Burushaski_Yeh_Barree (one 'h' removed)
- new Grapheme_Cluster_Break (GCB) value: PP=Prepend
- new Word_Break (WB) value: NL=Newline

* hardcoded Unihan range end/limit (see Unicode 4.1 update for comparison)
- Unihan range end moves from 9FBB to 9FC3
  search for both 9FBB (end) and 9FBC (limit) (regex 9FB[BC], case-insensitive)
  + do change gennames.c

* build Unicode data source code for hardcoding core data
C:\svn\icuproj\icu\uni51\source\data>NMAKE /f makedata.mak ICUMAKE=\svn\icuproj\icu\uni51\source\data\ CFG=debug uni-core-data

ICU data make path is \svn\icuproj\icu\uni51\source\data\
ICU root path is \svn\icuproj\icu\uni51
Information: cannot find "ucmlocal.mk". Not building user-additional converter files.
Information: cannot find "brklocal.mk". Not building user-additional break iterator files.
Information: cannot find "reslocal.mk". Not building user-additional resource bundle files.
Information: cannot find "collocal.mk". Not building user-additional resource bundle files.
Information: cannot find "rbnflocal.mk". Not building user-additional resource bundle files.
Information: cannot find "trnslocal.mk". Not building user-additional transliterator files.
Information: cannot find "misclocal.mk". Not building user-additional miscellaenous files.
Creating data file for Unicode Character Properties
Creating data file for Unicode Case Mapping Properties
Creating data file for Unicode BiDi/Shaping Properties
Creating data file for Unicode Normalization
Unicode .icu files built to "\svn\icuproj\icu\uni51\source\data\out\build\icudt39l"
Unicode .c source files built to "\svn\icuproj\icu\uni51\source\data\out\tmp"

- copy the .c source files to C:\svn\icuproj\icu\uni51\source\common
  and rebuild the common library

*** Break iterators

* Update break iterator rules to new UAX versions and new property values

*** UCA

* update FractionalUCA.txt and UCARules.txt with new canonical closure

*** Test suites
- Test that APIs using Unicode property value aliases (like UnicodeSet)
  support all of the boolean values N/Y, No/Yes, F/T, False/True
  -> TestBinaryValues() tests in both cintltst and intltest

*** LayoutEngine script information
* Run ICU4J com.ibm.icu.dev.tool.layout.ScriptNameBuilder. This generates LEScripts.h, LELanguage.h,
ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp in the working directory. (it also generates
ScriptRunData.cpp, which is no longer needed.)

The generated files have a current copyright date and "@draft" statement.

* copy the above files into <icu>/source/layout, replacing the old files.

Add new default entries to the indicClassTables array in <icu>/source/layout/IndicClassTables.cpp
and the complexTable array in <icu>/source/layoutex/ParagraphLayout.cpp. (This step should be automated...)

* rebuild the layout and layoutex libraries.

*** Documentation
- Update User Guide
  + Jamo_Short_Name, sfc->scf, binary property value aliases

---------------------------------------------------------------------------- ***

Unicode 5.0 update

*** related Jitterbugs

5084 RFE: Update to Unicode 5.0

*** data files & enums & parser code

* file preparation
- ucdstrip:
    DerivedCoreProperties.txt
    DerivedNormalizationProps.txt
    NormalizationTest.txt
    PropList.txt
    Scripts.txt
    GraphemeBreakProperty.txt
    SentenceBreakProperty.txt
    WordBreakProperty.txt
- ucdstrip and ucdmerge:
    EastAsianWidth.txt
    LineBreak.txt

* my ucd2unidata.bat (needs to be updated each time with UCD and file version numbers)
copy 5.0.0\ucd\BidiMirroring.txt ..\unidata\
copy 5.0.0\ucd\Blocks.txt ..\unidata\
copy 5.0.0\ucd\CaseFolding.txt ..\unidata\
copy 5.0.0\ucd\DerivedAge.txt ..\unidata\
copy 5.0.0\ucd\extracted\DerivedBidiClass.txt ..\unidata\
copy 5.0.0\ucd\extracted\DerivedJoiningGroup.txt ..\unidata\
copy 5.0.0\ucd\extracted\DerivedJoiningType.txt ..\unidata\
copy 5.0.0\ucd\extracted\DerivedNumericValues.txt ..\unidata\
copy 5.0.0\ucd\NormalizationCorrections.txt ..\unidata\
copy 5.0.0\ucd\PropertyAliases.txt ..\unidata\
copy 5.0.0\ucd\PropertyValueAliases.txt ..\unidata\
copy 5.0.0\ucd\SpecialCasing.txt ..\unidata\
copy 5.0.0\ucd\UnicodeData.txt ..\unidata\

ucdstrip < 5.0.0\ucd\DerivedCoreProperties.txt > ..\unidata\DerivedCoreProperties.txt
ucdstrip < 5.0.0\ucd\DerivedNormalizationProps.txt > ..\unidata\DerivedNormalizationProps.txt
ucdstrip < 5.0.0\ucd\NormalizationTest.txt > ..\unidata\NormalizationTest.txt
ucdstrip < 5.0.0\ucd\PropList.txt > ..\unidata\PropList.txt
ucdstrip < 5.0.0\ucd\Scripts.txt > ..\unidata\Scripts.txt
ucdstrip < 5.0.0\ucd\auxiliary\GraphemeBreakProperty.txt > ..\unidata\GraphemeBreakProperty.txt
ucdstrip < 5.0.0\ucd\auxiliary\SentenceBreakProperty.txt > ..\unidata\SentenceBreakProperty.txt
ucdstrip < 5.0.0\ucd\auxiliary\WordBreakProperty.txt > ..\unidata\WordBreakProperty.txt
ucdstrip < 5.0.0\ucd\EastAsianWidth.txt | ucdmerge > ..\unidata\EastAsianWidth.txt
ucdstrip < 5.0.0\ucd\LineBreak.txt | ucdmerge > ..\unidata\LineBreak.txt

* update FractionalUCA.txt and UCARules.txt with new canonical closure

* genpname
- run preparse.pl
  + make sure that data.h is writable
  + perl preparse.pl \cvs\oss\icu > out.txt

* uchar.h & uscript.h & uprops.h & uprops.c & genprops
- new block & script values
  + script values already added in ICU 3.6 because all of ISO 15924 is now covered

* build Unicode data source code for hardcoding core data
C:\cvs\oss\icu\source\data>NMAKE /f makedata.mak ICUMAKE=\cvs\oss\icu\source\data\ CFG=debug uni-core-data

ICU data make path is \cvs\oss\icu\source\data\
ICU root path is \cvs\oss\icu
Information: cannot find "ucmlocal.mk". Not building user-additional converter files.
[etc.]
Creating data file for Unicode Character Properties
Creating data file for Unicode Case Mapping Properties
Creating data file for Unicode BiDi/Shaping Properties
Creating data file for Unicode Normalization
Unicode .icu files built to "\cvs\oss\icu\source\data\out\build\icudt35l"
Unicode .c source files built to "\cvs\oss\icu\source\data\out\tmp"

- copy the .c source files to C:\cvs\oss\icu\source\common
  and rebuild the common library

*** Unicode version numbers
- makedata.mak
- uchar.h
- configure.in

*** LayoutEngine script information
* Run ICU4J com.ibm.icu.dev.tool.layout.ScriptNameBuilder. This generates LEScripts.h, LELanguage.h,
ScriptAndLanguageTags.h and ScriptAndLanguageTags.cpp in the working directory. (it also generates
ScriptRunData.cpp, which is no longer needed.)

The generated files have a current copyright date and "@draft" statement.

* copy the above files into <icu>/source/layout, replacing the old files.

Add new default entries to the indicClassTables array in <icu>/source/layout/IndicClassTables.cpp
and the complexTable array in <icu>/source/layoutex/ParagraphLayout.cpp. (This step should be automated...)

* rebuild the layout and layoutex libraries.

---------------------------------------------------------------------------- ***

Unicode 4.1 update

*** related Jitterbugs

4332 RFE: Update to Unicode 4.1
4157 RBBI, TR29 4.1 updates

*** data files & enums & parser code

* file preparation
- ucdstrip:
    DerivedCoreProperties.txt
    DerivedNormalizationProps.txt
    NormalizationTest.txt
    GraphemeBreakProperty.txt
    SentenceBreakProperty.txt
    WordBreakProperty.txt
- ucdstrip and ucdmerge:
    EastAsianWidth.txt
    LineBreak.txt

* add new files to the repository
    GraphemeBreakProperty.txt
    SentenceBreakProperty.txt
    WordBreakProperty.txt

* update FractionalUCA.txt and UCARules.txt with new canonical closure

* genpname
- handle new enumerated properties in sub read_uchar
- run preparse.pl

* uchar.h & uscript.h & uprops.h & uprops.c & genprops
- new binary properties
  + Pattern_Syntax
  + Pattern_White_Space
- new enumerated properties
  + Grapheme_Cluster_Break
  + Sentence_Break
  + Word_Break
- new block & script & line break values

* gencase
- case-ignorable changes
  see http://www.unicode.org/versions/Unicode4.1.0/#CaseMods
  now: (D47a) Word_Break=MidLetter or Mn, Me, Cf, Lm, Sk

*** Unicode version numbers
- makedata.mak
- uchar.h
- configure.in

*** tests
- verify that u_charMirror() round-trips
- test all new properties and some new values of old properties

*** other code

* hardcoded Unihan range end/limit
- Unihan range end moves from 9FA5 to 9FBB
  search for both 9FA5 (end) and 9FA6 (limit) (regex 9FA[56], case-insensitive)
  + do not modify BOCU/BOCSU code because that would change the encoding
    and break binary compatibility!
  + similarly, do not change the GB 18030 range data (ucnvmbcs.c),
    NamePrepProfile.txt
  + ignore trietest.c: test data is arbitrary
  + ignore tstnorm.cpp: test optimization, not important
  + ignore collation: 9FA[56] only appears in comments; swapCJK() uses the whole block up to 9FFF
  + do change line_th.txt and word_th.txt
    by replacing hardcoded ranges with the new property values
  + do change gennames.c

source\data\brkitr\line_th.txt(229):        \u33E0-\u33FE \u3400-\u4DB5 \u4E00-\u9FA5 \uA000-\uA48C \uA490-\uA4C6
source\data\brkitr\word_th.txt(23):        \u33E0-\u33FE \u3400-\u4DB5 \u4E00-\u9FA5 \uA000-\uA48C \uA490-\uA4C6
source\tools\gennames\gennames.c(971):        0x4e00, 0x9fa5,

* case mappings
- compare new special casing context conditions with previous ones
  see http://www.unicode.org/versions/Unicode4.1.0/#CaseMods

* genpname
- consider storing only the short name if it is the same as the long name

*** other reviews
- UAX #29 changes (grapheme/word/sentence breaks)
- UAX #14 changes (line breaks)
- Pattern_Syntax & Pattern_White_Space

---------------------------------------------------------------------------- ***

Unicode 4.0.1 update

*** related Jitterbugs

3170 RFE: Update to Unicode 4.0.1
3171 Add new Unicode 4.0.1 properties
3520 use Unicode 4.0.1 updates for break iteration

*** data files & enums & parser code

* file preparation
- ucdstrip: DerivedNormalizationProps.txt, NormalizationTest.txt, DerivedCoreProperties.txt
- ucdstrip and ucdmerge: EastAsianWidth.txt, LineBreak.txt

* file fixes
- fix UnicodeData.txt general categories of Ethiopic digits Nd->No
  according to PRI #26
  http://www.unicode.org/review/resolved-pri.html#pri26
- undone again because no corrigendum in sight;
  instead modified tests to not check consistency on this for Unicode 4.0.1

* ucdterms.txt
- update from http://www.unicode.org/copyright.html
  formatted for plain text

* uchar.h & uprops.h & uprops.c & genprops
- add UBLOCK_CYRILLIC_SUPPLEMENT because the block is renamed
- add U_LB_INSEPARABLE due to a spelling fix
  + put short name comment only on line with new constant
    for genpname perl script parser
- new binary properties
  + STerm
  + Variation_Selector

* genpname
- fix genpname perl script so that it doesn't choke on more than 2 names per property value
- perl script: correctly calculate the maximum number of fields per row

* uscript.h
- new script code Hrkt=Katakana_Or_Hiragana

* gennorm.c track changes in DerivedNormalizationProps.txt
- "FNC" -> "FC_NFKC"
- single field "NFD_NO" -> two fields "NFD_QC; N" etc.

* genprops/props2.c track changes in DerivedNumericValues.txt
- changed from 3 columns to 2, dropping the numeric type
  + assume that the type is always numeric for Han characters,
    and that only those are added in addition to what UnicodeData.txt lists

*** Unicode version numbers
- makedata.mak
- uchar.h
- configure.in

*** tests
- update test of default bidi classes according to PRI #28
  /tsutil/cucdtst/TestUnicodeData
  http://www.unicode.org/review/resolved-pri.html#pri28
- bidi tests: change exemplar character for ES depending on Unicode version
- change hardcoded expected property values where they change

*** other code

* name matching
- read UCD.html

* scripts
- use new Hrkt=Katakana_Or_Hiragana

* ZWJ & ZWNJ
- are now part of combining character sequences
- break iteration used to assume that LB classes did not overlap; now they do for ZWJ & ZWNJ
