222 lines
5.0 KiB
Plaintext
222 lines
5.0 KiB
Plaintext
#
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# Copyright (C) 2002-2005, International Business Machines Corporation
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# and others. All Rights Reserved.
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#
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# file: word.txt
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#
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# ICU Word Break Rules, POSIX locale.
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# See Unicode Standard Annex #29.
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# These rules are based on Unicode Version 4.1, with
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# the modification that the ':' character is removed from the MidLetter category.
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#
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# Note: Updates to word.txt will usually need to be merged into
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# word_POSIX.txt and word_ja.txt also.
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##############################################################################
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#
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# Character class definitions from TR 29
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#
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##############################################################################
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!!chain;
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#
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# Character Class Definitions.
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#
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$Format = [\p{Word_Break = Format}];
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$Katakana = [\p{Word_Break = Katakana}];
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$ALetter = [\p{Word_Break = ALetter}];
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$MidLetter = [\p{Word_Break = MidLetter} - [ \:]];
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$MidNum = [\p{Word_Break = MidNum}];
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$Numeric = [\p{Word_Break = Numeric}];
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$ExtendNumLet = [\p{Word_Break = ExtendNumLet}];
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$CR = \u000d;
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$LF = \u000a;
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$Extend = [\p{Grapheme_Cluster_Break = Extend}];
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$Control = [\p{Grapheme_Cluster_Break = Control}];
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#
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# Rules 3 Grapheme Clusters behave like their first char.
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# Rule 4 Ignore trailing Format characters (Also see note in TR 29)
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#
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$KatakanaEx = $Katakana $Extend* $Format*;
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$ALetterEx = $ALetter $Extend* $Format*;
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$MidLetterEx = $MidLetter $Extend* $Format*;
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$MidNumEx = $MidNum $Extend* $Format*;
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$NumericEx = $Numeric $Extend* $Format*;
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$ExtendNumLetEx = $ExtendNumLet $Extend* $Format*;
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$Hiragana = [:Hiragana:];
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$Ideographic = [:IDEOGRAPHIC:];
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$HiraganaEx = $Hiragana $Extend* $Format*;
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$IdeographicEx = $Ideographic $Extend* $Format*;
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## -------------------------------------------------
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!!forward;
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# Rule 3 - don't break grapheme clusters.
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# see character breaks.
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$CR $LF $Format*;
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[^$Control $CR $LF] $Extend+ $Format*;
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[^$Control $CR $LF] $Extend* $Format+;
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# Rule 4 - ignore trailing format characters
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# For the most part, trailing formats are handled by the $<whatever>Ex
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# definitions above. The rule here comes into play when the start of text
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# begins with a group of Format chars, or with "word" consisting of a single
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# char that is not in any of the listed word break categories followed by
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# format char(s).
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.? $Format+;
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$NumericEx {100};
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$ALetterEx {200};
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$KatakanaEx {300};
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$HiraganaEx {300};
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$IdeographicEx {400};
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# rule 5
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$ALetterEx $ALetterEx {200};
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# rule 6 and 7
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$ALetterEx $MidLetterEx $ALetterEx {200};
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# rule 8
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$NumericEx $NumericEx {100};
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# rule 9
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$ALetterEx $Format* $NumericEx {200};
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# rule 10
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$NumericEx $ALetterEx {200};
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# rule 11 and 12
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$NumericEx $MidNumEx $NumericEx {100};
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# rule 13
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$KatakanaEx $KatakanaEx {300};
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# rule 13a/b
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$ALetterEx $ExtendNumLetEx {200}; # (13a)
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$NumericEx $ExtendNumLetEx {100}; # (13a)
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$KatakanaEx $ExtendNumLetEx {300}; # (13a)
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$ExtendNumLetEx $ExtendNumLetEx{200}; # (13a)
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$ExtendNumLetEx $ALetterEx {200}; # (13b)
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$ExtendNumLetEx $NumericEx {100}; # (13b)
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$ExtendNumLetEx $KatakanaEx {300}; # (13b)
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## -------------------------------------------------
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!!reverse;
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$BackALetterEx = $Format* $Extend* $ALetter;
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$BackNumericEx = $Format* $Extend* $Numeric;
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$BackMidNumEx = $Format* $Extend* $MidNum;
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$BackMidLetterEx = $Format* $Extend* $MidLetter;
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$BackKatakanaEx = $Format* $Extend* $Katakana;
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$BackExtendNumLetEx= $Format* $Extend* $ExtendNumLet;
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$Format* $LF $CR;
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# see character breaks
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$Format* $Extend* [^$Control $CR $LF];
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$Format+ .?;
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# rule 5
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$BackALetterEx $BackALetterEx;
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# rule 6 and 7
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$BackALetterEx $BackMidLetterEx $BackALetterEx;
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# rule 8
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$BackNumericEx $BackNumericEx;
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# rule 9
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$BackNumericEx $BackALetterEx;
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# rule 10
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$BackALetterEx $BackNumericEx;
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# rule 11 and 12
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$BackNumericEx $BackMidNumEx $BackNumericEx;
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# rule 13
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$BackKatakanaEx $BackKatakanaEx;
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# rules 13 a/b
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#
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($BackALetterEx | $BackNumericEx | $BackKatakanaEx | $BackExtendNumLetEx) $BackExtendNumLetEx;
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$BackExtendNumLetEx ($BackALetterEx | $BackNumericEx | $BackKatakanaEx);
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## -------------------------------------------------
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!!safe_reverse;
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# rule 3
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$Extend+ [^$Extend];
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$Format+ $Extend* [^$Extend];
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$Extend+; # comes into play when buffer _begins_ with an $Extend+.
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$Format+;
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# rule 6
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$MidLetter $BackALetterEx;
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# rule 11
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$MidNum $BackNumericEx;
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## -------------------------------------------------
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!!safe_forward;
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# rule 3
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$Extend+ $Format*;
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# rule 4
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$Extend* $Format+ $ALetterEx;
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$Extend* $Format+ $NumericEx;
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$Extend* $Format+ $MidLetterEx;
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$Extend* $Format+ $MidNumEx;
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$Extend* $Format+ $KatakanaEx;
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$Extend* $Format+ $ExtendNumLetEx;
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$Extend+ $Format* $ALetterEx;
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$Extend+ $Format* $NumericEx;
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$Extend+ $Format* $MidLetterEx;
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$Extend+ $Format* $MidNumEx;
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$Extend+ $Format* $KatakanaEx;
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$Extend+ $Format* $ExtendNumLetEx;
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# rule 6
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$MidLetterEx $ALetterEx;
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# rule 11
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$MidNumEx $NumericEx;
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