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#
# Copyright (C) 2002-2003,
# 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 Version 4.0.0, dated 2003-04-17
#
##############################################################################
#
# Character class definitions from TR 29
#
##############################################################################
!!chain;
!!LBCMNoChain;
$Katakana = [[:Script = KATAKANA:]
[:name = KATAKANA-HIRAGANA PROLONGED SOUND MARK:]
[:name = HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK:]
[:name = HALFWIDTH KATAKANA VOICED SOUND MARK:]
[:name = HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK:]];
$ALetter = [[:Alphabetic:] [:name= HEBREW PUNCTUATION GERESH:]
- [:Ideographic:]
- $Katakana
- [:Script = Thai:]
- [:Script = Lao:]
- [:Script = Hiragana:]];
$ABaseLetter = [$ALetter - [:Grapheme_Extend = TRUE:]];
$ACMLetter = [$ALetter & [:Grapheme_Extend = TRUE:]];
$MidLetter = [[:name = APOSTROPHE:] [:name = MIDDLE DOT:]
[:name = HEBREW PUNCTUATION GERSHAYIM:]
[:name = RIGHT SINGLE QUOTATION MARK:]
[:name = HYPHENATION POINT:]];
$MidNumLet = [[:name = FULL STOP:] [:name = COLON:]];
$MidNum = [[:LineBreak = Infix_Numeric:] - $MidNumLet];
$Numeric = [:LineBreak = Numeric:];
#
# Character Class Definitions.
# The names are those from TR29.
#
$CR = \u000d;
$LF = \u000a;
$Control = [[:Zl:] [:Zp:] [:Cc:] [:Cf:]];
$Extend = [[:Grapheme_Extend = TRUE:]];
$Format = [[:Cf:]];
$Hiragana = [:Hiragana:];
$Ideographic = [:IDEOGRAPHIC:];
## -------------------------------------------------
!!forward;
$CR $LF;
# rule 3 and 4
$ALetterEx = $ALetter $Extend*;
$ABaseLetterEx = $ABaseLetter $Extend*;
$ACMLetterEx = $ACMLetter $Extend*;
$NumericEx = $Numeric $Extend*;
$MidNumEx = $MidNum $Extend*;
$MidNumLetEx = $MidNumLet $Extend*;
$MidLetterEx = $MidLetter $Extend*;
$KatakanaEx = $Katakana $Extend*;
# see character breaks
[^$Control] $Extend*;
# rule 5
$ALetterEx ($Format* $ALetterEx)* {200};
# rule 6 and 7
$MidALetterEx = ($ABaseLetterEx | $Format $ACMLetterEx);
$ALetterSeq =
$ALetterEx
(
$Format* ($MidLetterEx | $MidNumLetEx) $Format* $MidALetterEx
)*;
$MidALetterSeq =
$MidALetterEx
(
$Format* ($MidLetterEx | $MidNumLetEx) $Format* $MidALetterEx
)*;
# rule 8
$NumericEx ($Format* $NumericEx)* {100};
# rule 9
$ALetterSeq ($Format* ($NumericEx | $MidALetterSeq))* {200};
# rule 10
$NumericEx ($Format* $MidALetterSeq)+ ($Format* $NumericEx)* {200};
# rule 11 and 12
$NumericEx ($Format* ($MidNumEx | $MidNumLetEx) $Format* $NumericEx)+ {100};
# rule 13
$KatakanaEx ($Format* $KatakanaEx)* {300};
$Hiragana $Extend* {300};
$Ideographic $Extend* {400};
## -------------------------------------------------
!!reverse;
$BackALetterEx = $Extend* $ALetter;
$BackABaseLetterEx = $Extend* $ABaseLetter;
$BackACMLetterEx = $Extend* $ACMLetter;
$BackNumericEx = $Extend* $Numeric;
$BackMidNumEx = $Extend* $MidNum;
$BackMidNumLetEx = $Extend* $MidNumLet;
$BackMidLetterEx = $Extend* $MidLetter;
$BackKatakanaEx = $Extend* $Katakana;
$LF $CR;
# see character breaks
$Extend* [^$Control];
# rule 5
($BackALetterEx $Format*)* $BackABaseLetterEx;
($BackALetterEx $Format*)* $BackACMLetterEx / $Control;
# rule 6 and 7
$BackMidALetterEx = ($BackABaseLetterEx | $BackACMLetterEx $Format);
$BackALetterSeq =
(
$BackMidALetterEx $Format* ($BackMidLetterEx | $BackMidNumLetEx) $Format*
)*
$BackABaseLetterEx;
$BackMidALetterSeq =
(
$BackMidALetterEx $Format* ($BackMidLetterEx | $BackMidNumLetEx) $Format*
)*
$BackMidALetterEx;
# rule 8
$BackNumericEx $Format* $BackNumericEx;
# rule 10
(($BackNumericEx | $BackMidALetterSeq) $Format*)* $BackALetterSeq;
# to handle letter sequences ending with a combining mark
(($BackNumericEx | $BackMidALetterSeq) $Format*)*
(
$BackMidALetterEx $Format* ($BackMidLetterEx | $BackMidNumLetEx) $Format*
)*
$BackACMLetterEx / $Control;
# rule 10
($BackNumericEx $Format*)* ($BackMidALetterSeq $Format*)* $BackNumericEx;
# rule 11 and 12
$BackNumericEx $Format* ($BackMidNumEx | $BackMidNumLetEx) $Format* $BackNumericEx;
# rule 13
$BackKatakanaEx $Format* $BackKatakanaEx;
## -------------------------------------------------
!!safe_reverse;
# rule 3
$Extend+ [^$Extend];
# rule 4
$Format+ $BackABaseLetterEx;
$Format+ $BackACMLetterEx / $Control;
$Format+ $BackNumericEx;
$Format+ $BackMidLetterEx;
$Format+ $BackMidNumLetEx;
$Format+ $BackMidNumEx;
$Format+ $BackKatakanaEx;
# rule 6
($MidLetter | $MidNumLet) $Format* $BackABaseLetterEx;
($MidLetter | $MidNumLet) $Format* $BackACMLetterEx / $Control;
# rule 11
($MidNum | $MidNumLet) $Format* $BackNumericEx;
## -------------------------------------------------
!!safe_forward;
# rule 3
$Extend+;
# rule 4
$Format+ $ALetterEx;
$Format+ $NumericEx;
$Format+ $MidLetterEx;
$Format+ $MidNumLetEx;
$Format+ $MidNumEx;
$Format+ $KatakanaEx;
# rule 6
($MidLetter | $MidNumLet) $Format* $ALetterEx;
# rule 11
($MidNum | $MidNumLet) $Format* $NumericEx;