#
# Copyright (C) 2002-2003, International Business Machines Corporation and others.
# All Rights Reserved.
#
# file: count_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.
# The names are those from TR29.
#
$CR = \u000d;
$LF = \u000a;
$Control = [[[:Zl:] [:Zp:] [:Cc:] [:Cf:]] - $TheZWSP];
$Extend = [[:Grapheme_Extend = TRUE:]];
####################################################################################
#
# Word Break Rules. Definitions and Rules specific to word break begin Here.
#
####################################################################################
$Format = [[:Cf:] - $TheZWSP];
# Rule 3: Treat a grapheme cluster as if it were a single character.
# Hangul Syllables are easier to deal with here than they are in Grapheme Clusters
# because we don't need to find the boundaries between adjacent syllables -
# they won't be word boundaries.
#
#
# "Extended" definitions. Grapheme Cluster + Format Chars, treated like the base char.
#
$ALetterEx = $ALetter $Extend*;
$KatakanaEx = $Katakana $Extend*;
$FormatEx = $Format $Extend*;
#
# Numbers. Rules 8, 11, 12 form the TR.
#
#
# Words. Alpha-numerics. Rule 5, 6, 7, 9, 10
# - must include at least one letter.
# - may include both letters and numbers.
# - may include MidLetter, MidNumber punctuation.
#
$LetterSequence = $ALetterEx ($FormatEx* $ALetterEx)*; # rules #6, #7
$LetterSequence {200};
#
# Do not break between Katakana. Rule #13.
#
$KatakanaEx ($FormatEx* $KatakanaEx)* {300};
[:Hiragana:] $Extend* {300};
#
# Ideographic Characters. Stand by themselves as words.
# Separated from the "Everything Else" rule, below, only so that they
# can be tagged with a return value. TODO: is this what we want?
#
# [:IDEOGRAPHIC:] $Extend* {400};
#
# Everything Else, with no tag.
# Non-Control chars combine with $Extend (combining) chars.
# Controls are do not.
#
[^$Control [:Ideographic:]] $Extend*;
$CR $LF;
#
# Reverse Rules. Back up over any of the chars that can group together.
# (Reverse rules do not need to be exact; they can back up too far,
# but must back up at least enough, and must stop on a boundary.)
#
# NonStarters are the set of all characters that can appear at the 2nd - nth position of
# a word. (They may also be the first.) The reverse rule skips over these, until it
# reaches something that can only be the start (and probably only) char in a "word".
# A space or punctuation meets the test.
#
$NonStarters = [$ALetter $Katakana $Extend $Format];
#!.*;
! ($NonStarters* | \n \r) .;
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