Check in word_ja.txt for Android.

source/data/brkitr/word_ja.txt

+#
+# Copyright (C) 2002-2013, International Business Machines Corporation 
+# and others. All Rights Reserved.
+#
+# file:  word_ja.txt
+#
+# ICU Word Break Rules
+#      See Unicode Standard Annex #29.
+#      These rules are based on UAX #29 Revision 22 for Unicode Version 6.3
+#
+# Note:  Updates to word.txt will usually need to be merged into
+#        word_POSIX.txt also.
+
+##############################################################################
+#
+#  Character class definitions from TR 29
+#
+##############################################################################
+
+!!chain;
+
+
+#
+#  Character Class Definitions.
+#
+
+$CR                 = [\p{Word_Break = CR}];
+$LF                 = [\p{Word_Break = LF}];
+$Newline            = [\p{Word_Break = Newline}];
+$Extend             = [\p{Word_Break = Extend}];
+$Regional_Indicator = [\p{Word_Break = Regional_Indicator}];
+$Format             = [\p{Word_Break = Format}];
+$Katakana           = [\p{Word_Break = Katakana}];
+$Hebrew_Letter      = [\p{Word_Break = Hebrew_Letter}];
+$ALetter            = [\p{Word_Break = ALetter}];
+$Single_Quote       = [\p{Word_Break = Single_Quote}];
+$Double_Quote       = [\p{Word_Break = Double_Quote}];
+# Remove two full stop characters from $MidNumLet and add them to $MidNum
+# to break a hostname into its components at the cost of breaking
+# 'e.g.' and 'i.e.' as well.
+# $MidNumLet is used in rules 6/7 (rules of our interest) and rules 11/12.
+# Because it's OR'd with $MidNum in rules 11/12, rules 11/12 are not affected
+# while rules 6/7 are reverted to the old behavior we want.
+$MidNumLet    = [[\p{Word_Break = MidNumLet}] - [\u002E \uFF0E]];
+$MidLetter          = [\p{Word_Break = MidLetter}];
+$MidNum       = [\p{Word_Break = MidNum}[\u002E \uFF0E]];
+$Numeric      = [\p{Word_Break = Numeric}[\uff10-\uff19]]; #includes fullwidth digits
+$ExtendNumLet       = [\p{Word_Break = ExtendNumLet}];
+
+$Han                = [:Han:];
+$Hiragana           = [:Hiragana:];
+
+
+#   Dictionary character set, for triggering language-based break engines. Currently
+#   limited to LineBreak=Complex_Context. Note that this set only works in Unicode
+#   5.0 or later as the definition of Complex_Context was corrected to include all
+#   characters requiring dictionary break.
+
+$Control        = [\p{Grapheme_Cluster_Break = Control}];
+$HangulSyllable = [\uac00-\ud7a3];
+$ComplexContext = [:LineBreak = Complex_Context:];
+$KanaKanji      = [$Han $Hiragana $Katakana];
+$dictionary     = [$ComplexContext];
+
+$ALetterPlus  = [$ALetter [$ComplexContext-$Extend-$Control]];
+
+
+#
+#  Rules 4    Ignore Format and Extend characters, 
+#             except when they appear at the beginning of a region of text.
+#
+# TODO: check if handling of katakana in dictionary makes rules incorrect/void
+$KatakanaEx           = $Katakana           ($Extend |  $Format)*;
+$Hebrew_LetterEx      = $Hebrew_Letter      ($Extend |  $Format)*;
+$ALetterEx            = $ALetterPlus        ($Extend |  $Format)*;
+$Single_QuoteEx       = $Single_Quote       ($Extend |  $Format)*;
+$Double_QuoteEx       = $Double_Quote       ($Extend |  $Format)*;
+$MidNumLetEx          = $MidNumLet          ($Extend |  $Format)*;
+$MidLetterEx          = $MidLetter          ($Extend |  $Format)*;
+$MidNumEx             = $MidNum             ($Extend |  $Format)*;
+$NumericEx            = $Numeric            ($Extend |  $Format)*;
+$ExtendNumLetEx       = $ExtendNumLet       ($Extend |  $Format)*;
+$Regional_IndicatorEx = $Regional_Indicator ($Extend |  $Format)*;
+
+$Ideographic    = [\p{Ideographic} [\u3005 \u3007 \u303B]];
+$HiraganaEx     = $Hiragana     ($Extend |  $Format)*;
+$IdeographicEx  = $Ideographic  ($Extend |  $Format)*;
+
+## -------------------------------------------------
+
+!!forward;
+
+
+# Rule 3 - CR x LF
+#
+$CR $LF;
+
+# Rule 4 - ignore Format and Extend characters, except when they appear at the beginning
+#          of a region of Text.   The rule here comes into play when the start of text
+#          begins with a group of Format chars, or with a "word" consisting of a single
+#          char that is not in any of the listed word break categories followed by
+#          format char(s), or is not a CJK dictionary character.
+[^$CR $LF $Newline]? ($Extend |  $Format)+;
+
+$NumericEx {100};
+$ALetterEx {200};
+$HangulSyllable {200};
+$Hebrew_LetterEx{200};
+$KatakanaEx {400};       # note:  these status values override those from rule 5
+$HiraganaEx {400};       #        by virtue of being numerically larger.
+$IdeographicEx {400};    #
+
+#
+# rule 5
+#    Do not break between most letters.
+#
+($ALetterEx | $Hebrew_LetterEx)  ($ALetterEx | $Hebrew_LetterEx) {200};
+
+# rule 6 and 7
+($ALetterEx | $Hebrew_LetterEx) ($MidLetterEx | $MidNumLetEx | $Single_QuoteEx) ($ALetterEx | $Hebrew_LetterEx) {200};
+
+# rule 7a
+$Hebrew_LetterEx $Single_QuoteEx {200};
+
+# rule 7b and 7c
+$Hebrew_LetterEx $Double_QuoteEx $Hebrew_LetterEx {200};
+
+# rule 8
+
+$NumericEx $NumericEx {100};
+
+# rule 9
+
+($ALetterEx | $Hebrew_LetterEx) $NumericEx {200};
+
+# rule 10
+
+$NumericEx ($ALetterEx | $Hebrew_LetterEx) {200};
+
+# rule 11 and 12 
+
+$NumericEx ($MidNumEx | $MidNumLetEx | $Single_QuoteEx) $NumericEx {100};
+
+# rule 13
+# to be consistent with $KanaKanji $KanaKanhi, changed
+# from 300 to 400.
+# See also TestRuleStatus in intltest/rbbiapts.cpp
+$KatakanaEx  $KatakanaEx {400};
+$HiraganaEx  $HiraganaEx {400};
+$IdeographicEx  $IdeographicEx {400};
+
+# rule 13a/b
+
+$ALetterEx       $ExtendNumLetEx {200};    #  (13a)
+$Hebrew_LetterEx $ExtendNumLetEx {200};    #  (13a)
+$NumericEx       $ExtendNumLetEx {100};    #  (13a)
+$KatakanaEx      $ExtendNumLetEx {400};    #  (13a)
+$ExtendNumLetEx  $ExtendNumLetEx {200};    #  (13a)
+
+$ExtendNumLetEx  $ALetterEx      {200};    #  (13b)
+$ExtendNumLetEx  $Hebrew_Letter  {200};    #  (13b)
+$ExtendNumLetEx  $NumericEx      {100};    #  (13b)
+$ExtendNumLetEx  $KatakanaEx     {400};    #  (13b)
+
+# rule 13c
+
+$Regional_IndicatorEx $Regional_IndicatorEx;
+
+## -------------------------------------------------
+
+!!reverse;
+
+$BackHebrew_LetterEx      = ($Format | $Extend)* $Hebrew_Letter;
+$BackALetterEx            = ($Format | $Extend)* $ALetterPlus;
+$BackSingle_QuoteEx       = ($Format | $Extend)* $Single_Quote;
+$BackDouble_QuoteEx       = ($Format | $Extend)* $Double_Quote;
+$BackMidNumLetEx          = ($Format | $Extend)* $MidNumLet;
+$BackNumericEx            = ($Format | $Extend)* $Numeric;
+$BackMidNumEx             = ($Format | $Extend)* $MidNum;
+$BackMidLetterEx          = ($Format | $Extend)* $MidLetter;
+$BackKatakanaEx           = ($Format | $Extend)* $Katakana;
+$BackHiraganaEx           = ($Format | $Extend)* $Hiragana;
+$BackIdeographicEx        = ($Format | $Extend)* $Ideographic;
+$BackExtendNumLetEx       = ($Format | $Extend)* $ExtendNumLet;
+$BackRegional_IndicatorEx = ($Format | $Extend)* $Regional_Indicator;
+
+# rule 3
+$LF $CR;
+
+# rule 4
+($Format | $Extend)*  [^$CR $LF $Newline]?;
+
+# rule 5
+
+($BackALetterEx | $BackHebrew_LetterEx) ($BackALetterEx | $BackHebrew_LetterEx);
+
+# rule 6 and 7
+
+($BackALetterEx | $BackHebrew_LetterEx) ($BackMidLetterEx | $BackMidNumLetEx | $BackSingle_QuoteEx) ($BackALetterEx | $BackHebrew_LetterEx);
+
+# rule 7a
+$BackSingle_QuoteEx $BackHebrew_LetterEx;
+
+# Rule 7b and 7c
+$BackHebrew_LetterEx $BackDouble_QuoteEx $BackHebrew_LetterEx;
+
+# rule 8
+
+$BackNumericEx $BackNumericEx;
+
+# rule 9
+
+$BackNumericEx ($BackALetterEx | $BackHebrew_LetterEx);
+
+# rule 10
+
+($BackALetterEx | $BackHebrew_LetterEx) $BackNumericEx;
+
+# rule 11 and 12
+
+$BackNumericEx ($BackMidNumEx | $BackMidNumLetEx | $BackSingle_QuoteEx) $BackNumericEx;
+
+# rule 13
+
+$BackKatakanaEx $BackKatakanaEx;
+$BackHiraganaEx $BackHiraganaEx;
+$BackIdeographicEx $BackIdeographicEx;
+
+# rules 13 a/b
+#
+$BackExtendNumLetEx ($BackALetterEx | $BackHebrew_LetterEx | $BackNumericEx | $BackKatakanaEx | $BackExtendNumLetEx);
+($BackALetterEx | $BackHebrew_LetterEx | $BackNumericEx | $BackKatakanaEx) $BackExtendNumLetEx; 
+
+# rule 13c
+
+$BackRegional_IndicatorEx $BackRegional_IndicatorEx;
+
+## -------------------------------------------------
+
+!!safe_reverse;
+
+# rule 3
+($Extend | $Format)+ .?;
+
+# rule 6
+($MidLetter | $MidNumLet | $Single_Quote) ($BackALetterEx | $BackHebrew_LetterEx);
+
+# rule 7b
+$Double_Quote $BackHebrew_LetterEx;
+
+
+# rule 11
+($MidNum | $MidNumLet | $Single_Quote) $BackNumericEx;
+
+# For dictionary-based break
+$dictionary $dictionary;
+
+## -------------------------------------------------
+
+!!safe_forward;
+
+# rule 4
+($Extend | $Format)+ .?;
+
+# rule 6
+($MidLetterEx | $MidNumLetEx | $Single_QuoteEx) ($ALetterEx | $Hebrew_LetterEx);
+
+# rule 7b
+$Double_QuoteEx $Hebrew_LetterEx;
+
+# rule 11
+($MidNumEx | $MidNumLetEx | $Single_QuoteEx) $NumericEx;
+
+# For dictionary-based break
+$dictionary $dictionary;