icu/icu4c/source/data/brkitr/rules/word.txt - nest-cam/4320010/icu - Git at Google

 #
 # Copyright (C) 2002-2016, International Business Machines Corporation
 # and others. All Rights Reserved.
 #
 # file:  word.txt
 #
 # ICU Word Break Rules
 #      See Unicode Standard Annex #29.
 #      These rules are based on UAX #29 Revision 27 for Unicode Version 8.0
 #      with additions from L2/16-011R3 for Emoji sequences.
 #
 # 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.
 #

 $E_Base = [\u261D\u26F9\u270A-\u270D\U0001F385\U0001F3C3-\U0001F3C4\U0001F3CA-\U0001F3CB\U0001F442-\U0001F443\U0001F446-\U0001F450\U0001F466-\U0001F469\U0001F46E\U0001F470-\U0001F478\U0001F47C\U0001F481-\U0001F483\U0001F485-\U0001F487\U0001F4AA\U0001F575\U0001F590\U0001F595-\U0001F596\U0001F645-\U0001F647\U0001F64B-\U0001F64F\U0001F6A3\U0001F6B4-\U0001F6B6\U0001F6C0\U0001F918];
 $E_Modifier = [\U0001F3FB-\U0001F3FF];
 $ZWJ = [\u200D];
 $GAZ = [\U0001F466-\U0001F469\U0001F48B\U0001F5E8\u2764];

 $CR                 = [\p{Word_Break = CR}];
 $LF                 = [\p{Word_Break = LF}];
 $Newline            = [\p{Word_Break = Newline} ];
 $Extend             = [[\p{Word_Break = Extend}][:Block=Tags:]];
 $Regional_Indicator = [\p{Word_Break = Regional_Indicator}];
 $Format             = [[\p{Word_Break = Format}] - [:Block=Tags:]];
 $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}];
 $MidNumLet          = [\p{Word_Break = MidNumLet}];
 $MidLetter          = [\p{Word_Break = MidLetter}];
 $MidNum             = [\p{Word_Break = MidNum}];
 $Numeric            = [\p{Word_Break = Numeric}];
 $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];
 $dictionaryCJK  = [$KanaKanji $HangulSyllable];
 $dictionary     = [$ComplexContext $dictionaryCJK];

 # leave CJK scripts out of ALetterPlus
 $ALetterPlus  = [$ALetter-$dictionaryCJK [$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 | $ZWJ)*;
 $Hebrew_LetterEx      = $Hebrew_Letter      ($Extend |  $Format | $ZWJ)*;
 $ALetterEx            = $ALetterPlus        ($Extend |  $Format | $ZWJ)*;
 $Single_QuoteEx       = $Single_Quote       ($Extend |  $Format | $ZWJ)*;
 $Double_QuoteEx       = $Double_Quote       ($Extend |  $Format | $ZWJ)*;
 $MidNumLetEx          = $MidNumLet          ($Extend |  $Format | $ZWJ)*;
 $MidLetterEx          = $MidLetter          ($Extend |  $Format | $ZWJ)*;
 $MidNumEx             = $MidNum             ($Extend |  $Format | $ZWJ)*;
 $NumericEx            = $Numeric            ($Extend |  $Format | $ZWJ)*;
 $ExtendNumLetEx       = $ExtendNumLet       ($Extend |  $Format | $ZWJ)*;
 $Regional_IndicatorEx = $Regional_Indicator ($Extend |  $Format | $ZWJ)*;

 $Ideographic    = [\p{Ideographic}];
 $HiraganaEx     = $Hiragana     ($Extend |  $Format | $ZWJ)*;
 $IdeographicEx  = $Ideographic  ($Extend |  $Format | $ZWJ)*;

 ## -------------------------------------------------

 !!forward;


 # Rule 3 - CR x LF
 #
 $CR $LF;

 # Rule 3c   ZWJ x GAZ.  Preceeds WB4, so no intervening Extend chars allowed.
 #
 $ZWJ $GAZ;


 # 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 | $ZWJ)+;

 $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};    #

 $E_Base ($Extend | $Format | $ZWJ)*;
 $E_Modifier ($Extend | $Format | $ZWJ)*;
 $GAZ ($Extend | $Format | $ZWJ)*;

 #
 # 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};

 # 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
 #    Pairs of Regional Indicators stay together.
 #    With rule chaining disabled by ^, this rule will match exactly two of them.
 #    No other rule begins with a Regional_Indicator, so chaining cannot extend the match.
 #
 ^$Regional_IndicatorEx $Regional_IndicatorEx;

 # special handling for CJK characters: chain for later dictionary segmentation
 $HangulSyllable $HangulSyllable {200};
 $KanaKanji $KanaKanji {400}; # different rule status if both kana and kanji found

 # rule 13d
 #    E_Base x E_Modifier
 #
 ($E_Base | $GAZ) ($Format | $Extend | $ZWJ)* $E_Modifier;


 ## -------------------------------------------------

 !!reverse;

 $BackHebrew_LetterEx      = ($Format | $Extend | $ZWJ)* $Hebrew_Letter;
 $BackALetterEx            = ($Format | $Extend | $ZWJ)* $ALetterPlus;
 $BackSingle_QuoteEx       = ($Format | $Extend | $ZWJ)* $Single_Quote;
 $BackDouble_QuoteEx       = ($Format | $Extend | $ZWJ)* $Double_Quote;
 $BackMidNumLetEx          = ($Format | $Extend | $ZWJ)* $MidNumLet;
 $BackNumericEx            = ($Format | $Extend | $ZWJ)* $Numeric;
 $BackMidNumEx             = ($Format | $Extend | $ZWJ)* $MidNum;
 $BackMidLetterEx          = ($Format | $Extend | $ZWJ)* $MidLetter;
 $BackKatakanaEx           = ($Format | $Extend | $ZWJ)* $Katakana;
 $BackHiraganaEx           = ($Format | $Extend | $ZWJ)* $Hiragana;
 $BackExtendNumLetEx       = ($Format | $Extend | $ZWJ)* $ExtendNumLet;
 $BackRegional_IndicatorEx = ($Format | $Extend | $ZWJ)* $Regional_Indicator;

 # rule 3
 $LF $CR;

 # Rule 3c   ZWJ x GAZ.  Preceeds WB4, so no intervening Extend chars allowed.
 #
 $GAZ $ZWJ;

 # rule 4
 ($Format | $Extend | $ZWJ)*  [^$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;

 # rules 13 a/b
 #
 $BackExtendNumLetEx ($BackALetterEx | $BackHebrew_LetterEx | $BackNumericEx | $BackKatakanaEx | $BackExtendNumLetEx);
 ($BackALetterEx | $BackHebrew_LetterEx | $BackNumericEx | $BackKatakanaEx) $BackExtendNumLetEx;

 # rule 13c

 ^$BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
         ($Format | $Extend | $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];
 ^$BackRegional_IndicatorEx $BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
         ($Format | $Extend | $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];

 $GAZ $ZWJ $BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
         ($Format | $Extend | $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];
 $GAZ $ZWJ $BackRegional_IndicatorEx $BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
         ($Format | $Extend | $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];

 # special handling for CJK characters: chain for later dictionary segmentation
 $HangulSyllable $HangulSyllable;
 $KanaKanji $KanaKanji; #different rule status if both kanji and kana found

 # rule 13d

 $E_Modifier ($Format | $Extend | $ZWJ)* ($E_Base | $GAZ);


 ## -------------------------------------------------

 !!safe_reverse;

 # rule 3
 ($Extend | $Format | $ZWJ)+ .?;

 # rule 6
 ($MidLetter | $MidNumLet | $Single_Quote) ($BackALetterEx | $BackHebrew_LetterEx);

 # rule 7b
 $Double_Quote $BackHebrew_LetterEx;


 # rule 11
 ($MidNum | $MidNumLet | $Single_Quote) $BackNumericEx;

 # rule 13c
 $BackRegional_IndicatorEx*;

 # For dictionary-based break
 $dictionary $dictionary;

 ## -------------------------------------------------

 !!safe_forward;

 # rule 4
 ($Extend | $Format | $ZWJ)+ .?;

 # rule 6
 ($MidLetterEx | $MidNumLetEx | $Single_QuoteEx) ($ALetterEx | $Hebrew_LetterEx);

 # rule 7b
 $Double_QuoteEx $Hebrew_LetterEx;

 # rule 11
 ($MidNumEx | $MidNumLetEx | $Single_QuoteEx) $NumericEx;

 # rule 13c
 $Regional_IndicatorEx*;

 # For dictionary-based break
 $dictionary $dictionary;
	#
	# Copyright (C) 2002-2016, International Business Machines Corporation
	# and others. All Rights Reserved.
	#
	# file: word.txt
	#
	# ICU Word Break Rules
	# See Unicode Standard Annex #29.
	# These rules are based on UAX #29 Revision 27 for Unicode Version 8.0
	# with additions from L2/16-011R3 for Emoji sequences.
	#
	# 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.
	#

	$E_Base = [\u261D\u26F9\u270A-\u270D\U0001F385\U0001F3C3-\U0001F3C4\U0001F3CA-\U0001F3CB\U0001F442-\U0001F443\U0001F446-\U0001F450\U0001F466-\U0001F469\U0001F46E\U0001F470-\U0001F478\U0001F47C\U0001F481-\U0001F483\U0001F485-\U0001F487\U0001F4AA\U0001F575\U0001F590\U0001F595-\U0001F596\U0001F645-\U0001F647\U0001F64B-\U0001F64F\U0001F6A3\U0001F6B4-\U0001F6B6\U0001F6C0\U0001F918];
	$E_Modifier = [\U0001F3FB-\U0001F3FF];
	$ZWJ = [\u200D];
	$GAZ = [\U0001F466-\U0001F469\U0001F48B\U0001F5E8\u2764];

	$CR = [\p{Word_Break = CR}];
	$LF = [\p{Word_Break = LF}];
	$Newline = [\p{Word_Break = Newline} ];
	$Extend = [[\p{Word_Break = Extend}][:Block=Tags:]];
	$Regional_Indicator = [\p{Word_Break = Regional_Indicator}];
	$Format = [[\p{Word_Break = Format}] - [:Block=Tags:]];
	$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}];
	$MidNumLet = [\p{Word_Break = MidNumLet}];
	$MidLetter = [\p{Word_Break = MidLetter}];
	$MidNum = [\p{Word_Break = MidNum}];
	$Numeric = [\p{Word_Break = Numeric}];
	$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];
	$dictionaryCJK = [$KanaKanji $HangulSyllable];
	$dictionary = [$ComplexContext $dictionaryCJK];

	# leave CJK scripts out of ALetterPlus
	$ALetterPlus = [$ALetter-$dictionaryCJK [$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 \| $ZWJ)*;
	$Hebrew_LetterEx = $Hebrew_Letter ($Extend \| $Format \| $ZWJ)*;
	$ALetterEx = $ALetterPlus ($Extend \| $Format \| $ZWJ)*;
	$Single_QuoteEx = $Single_Quote ($Extend \| $Format \| $ZWJ)*;
	$Double_QuoteEx = $Double_Quote ($Extend \| $Format \| $ZWJ)*;
	$MidNumLetEx = $MidNumLet ($Extend \| $Format \| $ZWJ)*;
	$MidLetterEx = $MidLetter ($Extend \| $Format \| $ZWJ)*;
	$MidNumEx = $MidNum ($Extend \| $Format \| $ZWJ)*;
	$NumericEx = $Numeric ($Extend \| $Format \| $ZWJ)*;
	$ExtendNumLetEx = $ExtendNumLet ($Extend \| $Format \| $ZWJ)*;
	$Regional_IndicatorEx = $Regional_Indicator ($Extend \| $Format \| $ZWJ)*;

	$Ideographic = [\p{Ideographic}];
	$HiraganaEx = $Hiragana ($Extend \| $Format \| $ZWJ)*;
	$IdeographicEx = $Ideographic ($Extend \| $Format \| $ZWJ)*;

	## -------------------------------------------------

	!!forward;


	# Rule 3 - CR x LF
	#
	$CR $LF;

	# Rule 3c ZWJ x GAZ. Preceeds WB4, so no intervening Extend chars allowed.
	#
	$ZWJ $GAZ;


	# 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 \| $ZWJ)+;

	$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}; #

	$E_Base ($Extend \| $Format \| $ZWJ)*;
	$E_Modifier ($Extend \| $Format \| $ZWJ)*;
	$GAZ ($Extend \| $Format \| $ZWJ)*;

	#
	# 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};

	# 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
	# Pairs of Regional Indicators stay together.
	# With rule chaining disabled by ^, this rule will match exactly two of them.
	# No other rule begins with a Regional_Indicator, so chaining cannot extend the match.
	#
	^$Regional_IndicatorEx $Regional_IndicatorEx;

	# special handling for CJK characters: chain for later dictionary segmentation
	$HangulSyllable $HangulSyllable {200};
	$KanaKanji $KanaKanji {400}; # different rule status if both kana and kanji found

	# rule 13d
	# E_Base x E_Modifier
	#
	($E_Base \| $GAZ) ($Format \| $Extend \| $ZWJ)* $E_Modifier;


	## -------------------------------------------------

	!!reverse;

	$BackHebrew_LetterEx = ($Format \| $Extend \| $ZWJ)* $Hebrew_Letter;
	$BackALetterEx = ($Format \| $Extend \| $ZWJ)* $ALetterPlus;
	$BackSingle_QuoteEx = ($Format \| $Extend \| $ZWJ)* $Single_Quote;
	$BackDouble_QuoteEx = ($Format \| $Extend \| $ZWJ)* $Double_Quote;
	$BackMidNumLetEx = ($Format \| $Extend \| $ZWJ)* $MidNumLet;
	$BackNumericEx = ($Format \| $Extend \| $ZWJ)* $Numeric;
	$BackMidNumEx = ($Format \| $Extend \| $ZWJ)* $MidNum;
	$BackMidLetterEx = ($Format \| $Extend \| $ZWJ)* $MidLetter;
	$BackKatakanaEx = ($Format \| $Extend \| $ZWJ)* $Katakana;
	$BackHiraganaEx = ($Format \| $Extend \| $ZWJ)* $Hiragana;
	$BackExtendNumLetEx = ($Format \| $Extend \| $ZWJ)* $ExtendNumLet;
	$BackRegional_IndicatorEx = ($Format \| $Extend \| $ZWJ)* $Regional_Indicator;

	# rule 3
	$LF $CR;

	# Rule 3c ZWJ x GAZ. Preceeds WB4, so no intervening Extend chars allowed.
	#
	$GAZ $ZWJ;

	# rule 4
	($Format \| $Extend \| $ZWJ)* [^$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;

	# rules 13 a/b
	#
	$BackExtendNumLetEx ($BackALetterEx \| $BackHebrew_LetterEx \| $BackNumericEx \| $BackKatakanaEx \| $BackExtendNumLetEx);
	($BackALetterEx \| $BackHebrew_LetterEx \| $BackNumericEx \| $BackKatakanaEx) $BackExtendNumLetEx;

	# rule 13c

	^$BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
	($Format \| $Extend \| $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];
	^$BackRegional_IndicatorEx $BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
	($Format \| $Extend \| $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];

	$GAZ $ZWJ $BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
	($Format \| $Extend \| $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];
	$GAZ $ZWJ $BackRegional_IndicatorEx $BackRegional_IndicatorEx / ($BackRegional_IndicatorEx $BackRegional_IndicatorEx)*
	($Format \| $Extend \| $ZWJ)* [[^$Regional_Indicator $Format $Extend $ZWJ] {eof}];

	# special handling for CJK characters: chain for later dictionary segmentation
	$HangulSyllable $HangulSyllable;
	$KanaKanji $KanaKanji; #different rule status if both kanji and kana found

	# rule 13d

	$E_Modifier ($Format \| $Extend \| $ZWJ)* ($E_Base \| $GAZ);



	## -------------------------------------------------

	!!safe_reverse;

	# rule 3
	($Extend \| $Format \| $ZWJ)+ .?;

	# rule 6
	($MidLetter \| $MidNumLet \| $Single_Quote) ($BackALetterEx \| $BackHebrew_LetterEx);

	# rule 7b
	$Double_Quote $BackHebrew_LetterEx;


	# rule 11
	($MidNum \| $MidNumLet \| $Single_Quote) $BackNumericEx;

	# rule 13c
	$BackRegional_IndicatorEx*;

	# For dictionary-based break
	$dictionary $dictionary;

	## -------------------------------------------------

	!!safe_forward;

	# rule 4
	($Extend \| $Format \| $ZWJ)+ .?;

	# rule 6
	($MidLetterEx \| $MidNumLetEx \| $Single_QuoteEx) ($ALetterEx \| $Hebrew_LetterEx);

	# rule 7b
	$Double_QuoteEx $Hebrew_LetterEx;

	# rule 11
	($MidNumEx \| $MidNumLetEx \| $Single_QuoteEx) $NumericEx;

	# rule 13c
	$Regional_IndicatorEx*;

	# For dictionary-based break
	$dictionary $dictionary;