Add Emoji properties

source/data/unidata/changes.txt

Index: source/data/unidata/changes.txt
diff --git a/source/data/unidata/changes.txt b/source/data/unidata/changes.txt
index 5febb0745ed01768dab97de15ec55234a8b37cfb..2060212970786a73d5a0ede4964126b24665fbf7 100644
--- a/source/data/unidata/changes.txt
+++ b/source/data/unidata/changes.txt
@@ -1,4 +1,4 @@
-* Copyright (C) 2004-2015, International Business Machines
+* Copyright (C) 2004-2016, International Business Machines
 * Corporation and others.  All Rights Reserved.
 *
 *   file name:  changes.txt
@@ -45,6 +45,35 @@ Khitan scripts will be encoded later.
 
 ---------------------------------------------------------------------------- ***
 
+Emoji properties added in ICU 57: http://bugs.icu-project.org/trac/ticket/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