[apple/icu.git] / icuSources / data / brkitr / line_normal_fi.txt

# Copyright (c) 2002-2015  International Business Machines Corporation and
# others. All Rights Reserved.
#
#  file:  line_normal_fi.txt
#
#         Line Breaking Rules
#         Implement default line breaking as defined by 
#         Unicode Standard Annex #14 Revision 29 for Unicode 6.2
#         http://www.unicode.org/reports/tr14/
#         tailored as noted in 2nd paragraph below..
#
#         TODO:  Rule LB 8 remains as it was in Unicode 5.2
#         This is only because of a limitation of ICU break engine implementation,
#         not because the older behavior is desirable.
#
#         This tailors the line break behavior both for Finnish and to correpond to CSS
#         line-break=normal (BCP47 -u-lb-normal) as defined for languages other than 
#         Chinese & Japanese.
#         It sets characters of class CJ to behave like ID.

#
#  Character Classes defined by TR 14.
#

!!chain;
!!LBCMNoChain;


!!lookAheadHardBreak;
#
#  !!lookAheadHardBreak    Described here because it is (as yet) undocumented elsewhere
#                          and only used for the line break rules.
#
#           It is used in the implementation of rule LB 10
#           which says to treat any combining mark that is not attached to a base
#           character as if it were of class AL  (alphabetic).
#
#           The problem occurs in the reverse rules.
#
#           Consider a sequence like, with correct breaks as shown
#               LF  ID  CM  AL  AL
#                  ^       ^       ^
#           Then consider the sequence without the initial ID (ideographic)
#                 LF  CM  AL  AL
#                    ^           ^
#           Our CM, which in the first example was attached to the ideograph,
#           is now unattached, becomes an alpha, and joins in with the other
#           alphas.
#
#           When iterating forwards, these sequences do not present any problems
#           When iterating backwards, we need to look ahead when encountering
#           a CM to see whether it attaches to something further on or not.
#           (Look-ahead in a reverse rule is looking towards the start)
#
#           If the CM is unattached, we need to force a break.
#
#           !!lookAheadHardBreak forces the run time state machine to
#           stop immediately when a look ahead rule ( '/' operator) matches,
#           and set the match position to that of the look-ahead operator,
#           no matter what other rules may be in play at the time.
#
#           See rule LB 19 for an example.
#

$AI = [:LineBreak =  Ambiguous:];
$AL = [:LineBreak =  Alphabetic:];
$BA = [[:LineBreak =  Break_After:] - [\u2010]];
$HH = [\u2010];
$BB = [:LineBreak =  Break_Before:];
$BK = [:LineBreak =  Mandatory_Break:];
$B2 = [:LineBreak =  Break_Both:];
$CB = [:LineBreak =  Contingent_Break:];
$CJ = [:LineBreak =  Conditional_Japanese_Starter:];
$CL = [:LineBreak =  Close_Punctuation:];
$CM = [:LineBreak =  Combining_Mark:];
$CP = [:LineBreak =  Close_Parenthesis:];
$CR = [:LineBreak =  Carriage_Return:];
$EX = [:LineBreak =  Exclamation:];
$GL = [:LineBreak =  Glue:];
$HL = [:LineBreak =  Hebrew_Letter:];
$HY = [:LineBreak =  Hyphen:];
$H2 = [:LineBreak =  H2:];
$H3 = [:LineBreak =  H3:];
$ID = [[:LineBreak =  Ideographic:] $CJ];
$IN = [:LineBreak =  Inseperable:];
$IS = [:LineBreak =  Infix_Numeric:];
$JL = [:LineBreak =  JL:];
$JV = [:LineBreak =  JV:];
$JT = [:LineBreak =  JT:];
$LF = [:LineBreak =  Line_Feed:];
$NL = [:LineBreak =  Next_Line:];
$NS = [:LineBreak =  Nonstarter:];
$NU = [:LineBreak =  Numeric:];
$OP = [:LineBreak =  Open_Punctuation:];
$PO = [:LineBreak =  Postfix_Numeric:];
$PR = [:LineBreak =  Prefix_Numeric:];
$QU = [:LineBreak =  Quotation:];
$RI = [:LineBreak =  Regional_Indicator:];
$SA = [:LineBreak =  Complex_Context:];
$SG = [:LineBreak =  Surrogate:];
$SP = [:LineBreak =  Space:];
$SY = [:LineBreak =  Break_Symbols:];
$WJ = [:LineBreak =  Word_Joiner:];
$XX = [:LineBreak =  Unknown:];
$ZW = [:LineBreak =  ZWSpace:];

# Special character classes for people & body part emoji:
# Subsets of $CM:
$ZWJ = \u200D;
$EmojiVar = \uFE0F;
# The following are subsets of $ID
$EmojiForSeqs = [\u2764 \U0001F441 \U0001F466-\U0001F469 \U0001F48B \U0001F5E8];
$EmojiForMods = [\u261D \u26F9 \u270A-\u270D \U0001F385 \U0001F3C3-\U0001F3C4 \U0001F3CA-\U0001F3CB \U0001F442-\U0001F443 \U0001F446-\U0001F450 \U0001F466-\U0001F469 \U0001F46E-\U0001F478 \U0001F47C \U0001F481-\U0001F483 \U0001F485-\U0001F487 \U0001F4AA \U0001F575 \U0001F590 \U0001F595 \U0001F596 \U0001F645-\U0001F647 \U0001F64B-\U0001F64F \U0001F6A3 \U0001F6B4-\U0001F6B6 \U0001F6C0 \U0001F918];
$EmojiMods = [\U0001F3FB-\U0001F3FF];

#   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.

$dictionary = [:LineBreak = Complex_Context:];

#
#  Rule LB1.  By default, treat AI  (characters with ambiguous east Asian width),
#                               SA  (South East Asian: Thai, Lao, Khmer)
#                               SG  (Unpaired Surrogates)
#                               XX  (Unknown, unassigned)
#                         as $AL  (Alphabetic)
#
$ALPlus = [$AL $AI $SA $SG $XX];

#
#  Combining Marks.   X $CM*  behaves as if it were X.  Rule LB6.
#
$ALcm = $ALPlus $CM*;
$BAcm = $BA $CM*;
$HHcm = $HH $CM*;
$BBcm = $BB $CM*;
$B2cm = $B2 $CM*;
$CLcm = $CL $CM*;
$CPcm = $CP $CM*;
$EXcm = $EX $CM*;
$GLcm = $GL $CM*;
$HLcm = $HL $CM*;
$HYcm = $HY $CM*;
$H2cm = $H2 $CM*;
$H3cm = $H3 $CM*;
$IDcm = $ID $CM*;
$INcm = $IN $CM*;
$IScm = $IS $CM*;
$JLcm = $JL $CM*;
$JVcm = $JV $CM*;
$JTcm = $JT $CM*;
$NScm = $NS $CM*;
$NUcm = $NU $CM*;
$OPcm = $OP $CM*;
$POcm = $PO $CM*;
$PRcm = $PR $CM*;
$QUcm = $QU $CM*;
$RIcm = $RI $CM*;
$SYcm = $SY $CM*;
$WJcm = $WJ $CM*;

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

!!forward;

#
#  Each class of character can stand by itself as an unbroken token, with trailing combining stuff
#
$ALPlus $CM+;
$BA $CM+;
$HH $CM+;
$BB $CM+;
$B2 $CM+;
$CL $CM+;
$CP $CM+;
$EX $CM+;
$GL $CM+;
$HL $CM+;
$HY $CM+;
$H2 $CM+;
$H3 $CM+;
$ID $CM+;
$IN $CM+;
$IS $CM+;
$JL $CM+;
$JV $CM+;
$JT $CM+;
$NS $CM+;
$NU $CM+;
$OP $CM+;
$PO $CM+;
$PR $CM+;
$QU $CM+;
$RI $CM+;
$SY $CM+;
$WJ $CM+;

#
# CAN_CM  is the set of characters that may combine with CM combining chars.
#         Note that Linebreak UAX 14's concept of a combining char and the rules
#         for what they can combine with are _very_ different from the rest of Unicode.
#
#         Note that $CM itself is left out of this set.  If CM is needed as a base
#         it must be listed separately in the rule.
#
$CAN_CM  = [^$SP $BK $CR $LF $NL $ZW $CM];       # Bases that can   take CMs
$CANT_CM = [ $SP $BK $CR $LF $NL $ZW $CM];       # Bases that can't take CMs

#
# AL_FOLLOW  set of chars that can unconditionally follow an AL
#            Needed in rules where stand-alone $CM s are treated as AL.
#            Chaining is disabled with CM because it causes other failures,
#            so for this one case we need to manually list out longer sequences.
#
$AL_FOLLOW_NOCM = [$BK $CR $LF $NL $ZW $SP];
$AL_FOLLOW_CM   = [$CL $CP $EX $HL $IS $SY $WJ $GL $OP $QU $BA $HH $HY $NS $IN $NU $ALPlus];
$AL_FOLLOW      = [$AL_FOLLOW_NOCM $AL_FOLLOW_CM];


#
#  Rule LB 4, 5    Mandatory (Hard) breaks.
#
$LB4Breaks    = [$BK $CR $LF $NL];
$LB4NonBreaks = [^$BK $CR $LF $NL];
$CR $LF {100};

#
#  LB 6    Do not break before hard line breaks.
#
$LB4NonBreaks?  $LB4Breaks {100};    # LB 5  do not break before hard breaks.
$CAN_CM $CM*    $LB4Breaks {100};
$CM+            $LB4Breaks {100};

# LB 7         x SP
#              x ZW
$LB4NonBreaks [$SP $ZW];
$CAN_CM $CM*  [$SP $ZW];
$CM+          [$SP $ZW];

#
# LB 8         Break after zero width space
#              TODO:  ZW SP* <break>
#              An engine change is required to write the reverse rule for this.
#              For now, leave the Unicode 5.2 rule, ZW <break>
#
$LB8Breaks    = [$LB4Breaks $ZW];
$LB8NonBreaks = [[$LB4NonBreaks] - [$ZW]];


# Special forward rule for people & body part emoji:
# don't break $ZWJ from subsequent $EmojiForSeqs
$EmojiForSeqs $EmojiVar? $EmojiMods? $ZWJ $EmojiForSeqs;

# LB 9     Combining marks.      X   $CM needs to behave like X, where X is not $SP, $BK $CR $LF $NL 
#                                $CM not covered by the above needs to behave like $AL   
#                                See definition of $CAN_CM.

$CAN_CM $CM+;                   #  Stick together any combining sequences that don't match other rules.
$CM+;

#
# LB 11  Do not break before or after WORD JOINER & related characters.
#
$CAN_CM $CM*  $WJcm;
$LB8NonBreaks $WJcm;
$CM+          $WJcm;

$WJcm $CANT_CM;
$WJcm $CAN_CM $CM*;

#
# LB 12  Do not break after NBSP and related characters.
#         GL  x
#
$GLcm $CAN_CM $CM*;
$GLcm $CANT_CM;
 
#
# LB 12a  Do not break before NBSP and related characters ...
#            [^SP BA HY] x GL
#
[[$LB8NonBreaks] - [$SP $BA $HH $HY]] $CM* $GLcm;
$CM+ GLcm;


#
# LB 13   Don't break before ']' or '!' or ';' or '/', even after spaces.
#
$LB8NonBreaks $CL;
$CAN_CM $CM*  $CL;
$CM+          $CL;              # by rule 10, stand-alone CM behaves as AL

$LB8NonBreaks $CP;
$CAN_CM $CM*  $CP;
$CM+          $CP;              # by rule 10, stand-alone CM behaves as AL

$LB8NonBreaks $EX;
$CAN_CM $CM*  $EX;
$CM+          $EX;              # by rule 10, stand-alone CM behaves as AL

$LB8NonBreaks $IS;
$CAN_CM $CM*  $IS;
$CM+          $IS;              # by rule 10, stand-alone CM behaves as AL

$LB8NonBreaks $SY;
$CAN_CM $CM*  $SY;
$CM+          $SY;              # by rule 10, stand-alone CM behaves as AL


#
# LB 14  Do not break after OP, even after spaces
#
$OPcm $SP* $CAN_CM $CM*;
$OPcm $SP* $CANT_CM;

$OPcm $SP+ $CM+ $AL_FOLLOW?;    # by rule 10, stand-alone CM behaves as AL

# LB 15
$QUcm $SP* $OPcm;

# LB 16
($CLcm | $CPcm) $SP* $NScm;

# LB 17
$B2cm $SP* $B2cm;

#
# LB 18  Break after spaces.
#
$LB18NonBreaks = [$LB8NonBreaks - [$SP]];
$LB18Breaks    = [$LB8Breaks $SP];


# LB 19
#         x QU
$LB18NonBreaks $CM* $QUcm;
$CM+                $QUcm;

#         QU  x
$QUcm .?;
$QUcm $LB18NonBreaks $CM*;    # Don't let a combining mark go onto $CR, $BK, etc.
                              #  TODO:  I don't think this rule is needed.


# LB 20
#        <break>  $CB
#        $CB   <break>

$LB20NonBreaks = [$LB18NonBreaks - $CB];

# LB 20.09 added rule for Finnish tailoring
# LB 21        x   (BA | HY | NS)
#           BB x
#
$LB20NonBreaks $CM* ($BAcm | $HHcm | $HYcm | $NScm) / $AL; 
$LB20NonBreaks $CM* ($BAcm | $HHcm | $HYcm | $NScm); 
($HY | $HH) $AL;

$BBcm [^$CB];                                  #  $BB  x
$BBcm $LB20NonBreaks $CM*;

# LB 21a Don't break after Hebrew + Hyphen
#   HL (HY | BA) x
#  
$HLcm ($HYcm | $BAcm | $HHcm) [^$CB]?;

# LB 21b (forward) Don't break between SY and HL
# (break between HL and SY already disallowed by LB 13 above)
$SYcm $HLcm;

# LB 22
($ALcm | $HLcm) $INcm;
$CM+     $INcm;     #  by rule 10, any otherwise unattached CM behaves as AL
$IDcm    $INcm;
$INcm    $INcm;
$NUcm    $INcm;


# $LB 23
$IDcm  $POcm;
$ALcm  $NUcm;       # includes $LB19
$HLcm  $NUcm;
$CM+   $NUcm;       # Rule 10, any otherwise unattached CM behaves as AL
$NUcm  $ALcm;
$NUcm  $HLcm;

#
# LB 24
#
$PRcm $IDcm;
$PRcm ($ALcm | $HLcm);
$POcm ($ALcm | $HLcm);

#
# LB 25   Numbers.
#
($PRcm | $POcm)? ($OPcm | $HYcm)? $NUcm ($NUcm | $SYcm | $IScm)* ($CLcm | $CPcm)? ($PRcm | $POcm)?;

# LB 26  Do not break a Korean syllable
#
$JLcm ($JLcm | $JVcm | $H2cm | $H3cm);
($JVcm | $H2cm) ($JVcm | $JTcm);
($JTcm | $H3cm) $JTcm;

# LB 27  Treat korean Syllable Block the same as ID  (don't break it)
($JLcm | $JVcm | $JTcm | $H2cm | $H3cm) $INcm;
($JLcm | $JVcm | $JTcm | $H2cm | $H3cm) $POcm;
$PRcm ($JLcm | $JVcm | $JTcm | $H2cm | $H3cm);


# LB 28   Do not break between alphabetics
#
($ALcm | $HLcm) ($ALcm | $HLcm);
$CM+ ($ALcm | $HLcm);      # The $CM+ is from rule 10, an unattached CM is treated as AL

# LB 29
$IScm ($ALcm | $HLcm);

# LB 30
($ALcm | $HLcm | $NUcm) $OPcm;
$CM+ $OPcm;         # The $CM+ is from rule 10, an unattached CM is treated as AL.          
$CPcm ($ALcm | $HLcm | $NUcm);

# LB 30a  Do not break between regional indicators.
$RIcm $RIcm;

# Special forward rule for people & body part emoji:
# don't break between relevant emoji and $EmojiMods
$EmojiForMods $EmojiVar? $EmojiMods;

#
#  Reverse Rules.
#
## -------------------------------------------------

!!reverse;

$CM+ $ALPlus;
$CM+ $BA;
$CM+ $HH;
$CM+ $BB;
$CM+ $B2;
$CM+ $CL;
$CM+ $CP;
$CM+ $EX;
$CM+ $GL;
$CM+ $HL;
$CM+ $HY;
$CM+ $H2;
$CM+ $H3;
$CM+ $ID;
$CM+ $IN;
$CM+ $IS;
$CM+ $JL;
$CM+ $JV;
$CM+ $JT;
$CM+ $NS;
$CM+ $NU;
$CM+ $OP;
$CM+ $PO;
$CM+ $PR;
$CM+ $QU;
$CM+ $RI;
$CM+ $SY;
$CM+ $WJ;
$CM+;


#
#  Sequences of the form  (shown forwards)
#      [CANT_CM]  <break>  [CM]  [whatever]
#  The CM needs to behave as an AL
#
$AL_FOLLOW $CM+ / (
          [$BK $CR $LF $NL $ZW {eof}] |
          $SP+ $CM+ $SP |
          $SP+ $CM* ([^$OP $CM $SP] | [$AL {eof}]));   # if LB 14 will match, need to surpress this break.
                                               #  LB14 says    OP SP* x .        
                                               #    becomes    OP SP* x AL
                                               #    becomes    OP SP* x CM+ AL_FOLLOW
                                               #
                                               # Further note:  the $AL in [$AL {eof}] is only to work around
                                               #                a rule compiler bug which complains about
                                               #                empty sets otherwise.
          
#
#  Sequences of the form  (shown forwards)
#      [CANT_CM]  <break> [CM]  <break>  [PR]
#  The CM needs to behave as an AL
#  This rule is concerned about getting the second of the two <breaks> in place.
#

[$PR   ] / $CM+ [$BK $CR $LF $NL $ZW $SP {eof}];


# LB 4, 5, 5

$LB4Breaks [$LB4NonBreaks-$CM];
$LB4Breaks $CM+ $CAN_CM;
$LF $CR;


# LB 7         x SP
#              x ZW
[$SP $ZW] [$LB4NonBreaks-$CM];
[$SP $ZW] $CM+ $CAN_CM;

# LB 8 ZW SP* <break>
#     TODO: to implement this, we need more than one look-ahead hard break in play at a time.
#           Requires an engine enhancement.
#   / $SP* $ZW

# Special reverse rule for people & body part emoji:
# don't break $ZWJ from subsequent $EmojiForSeqs
$EmojiForSeqs $ZWJ $EmojiMods? $EmojiVar? $EmojiForSeqs;

# LB 9,10  Combining marks.
#    X   $CM needs to behave like X, where X is not $SP or controls.
#    $CM not covered by the above needs to behave like $AL
# Stick together any combining sequences that don't match other rules.
$CM+ $CAN_CM;


# LB 11
$CM* $WJ $CM* $CAN_CM;
$CM* $WJ      [$LB8NonBreaks-$CM];

     $CANT_CM $CM* $WJ;
$CM* $CAN_CM  $CM* $WJ;

# LB 12a
#      [^SP BA HY] x GL
#
$CM* $GL $CM* [$LB8NonBreaks-[$CM $SP $BA $HH $HY]];

# LB 12
#     GL  x
#
$CANT_CM $CM* $GL;
$CM* $CAN_CM $CM* $GL;


# LB 13
$CL $CM+ $CAN_CM;
$CP $CM+ $CAN_CM;
$EX $CM+ $CAN_CM;
$IS $CM+ $CAN_CM;
$SY $CM+ $CAN_CM;

$CL [$LB8NonBreaks-$CM];
$CP [$LB8NonBreaks-$CM];
$EX [$LB8NonBreaks-$CM];
$IS [$LB8NonBreaks-$CM];
$SY [$LB8NonBreaks-$CM];

# Rule 13 & 14 taken together for an edge case.
#   Match this, shown forward
#     OP SP+  ($CM+ behaving as $AL) (CL | CP | EX | IS | IY)
#   This really wants to chain at the $CM+ (which is acting as an $AL)
#   except for $CM chaining being disabled.
[$CL $CP $EX $IS $SY] $CM+ $SP+ $CM* $OP;  

# LB 14    OP SP* x
#
$CM* $CAN_CM    $SP* $CM* $OP;
     $CANT_CM   $SP* $CM* $OP;
$AL_FOLLOW? $CM+  $SP $SP* $CM* $OP;     #  by LB 10, behaves like $AL_FOLLOW? $AL $SP* $CM* $OP
     
     $AL_FOLLOW_NOCM $CM+ $SP+ $CM* $OP;
$CM* $AL_FOLLOW_CM   $CM+ $SP+ $CM* $OP;
$SY $CM $SP+ $OP;   # TODO:  Experiment.  Remove.


# LB 15
$CM* $OP $SP* $CM* $QU;

# LB 16
$CM* $NS $SP* $CM* ($CL | $CP);

# LB 17
$CM* $B2 $SP* $CM* $B2;

# LB 18  break after spaces
#        Nothing explicit needed here.


#
# LB 19
#
$CM* $QU $CM* $CAN_CM;                                #   . x QU
$CM* $QU      $LB18NonBreaks;


$CM* $CAN_CM  $CM* $QU;                               #   QU x .
     $CANT_CM $CM* $QU;
     
#
#  LB 20  Break before and after CB.
#         nothing needed here.
#

# LB 20.09 added rule for Finnish tailoring
$AL ($HY | $HH) / $SP;

# LB 21
$CM* ($BA | $HH | $HY | $NS) $CM* [$LB20NonBreaks-$CM];     #  . x (BA | HY | NS)

$CM* [$LB20NonBreaks-$CM] $CM* $BB;                   #  BB x .
[^$CB] $CM* $BB;                                      # 

# LB21a
[^$CB] $CM* ($HY | $BA | $HH) $CM* $HL;

# LB21b (reverse)
$CM* $HL $CM* $SY;

# LB 22
$CM* $IN $CM* ($ALPlus | $HL);
$CM* $IN $CM* $ID;
$CM* $IN $CM* $IN;
$CM* $IN $CM* $NU;

# LB 23
$CM* $PO $CM* $ID;
$CM* $NU $CM* ($ALPlus | $HL);
$CM* ($ALPlus | $HL) $CM* $NU;

# LB 24
$CM* $ID $CM* $PR;
$CM* ($ALPlus | $HL) $CM* $PR;
$CM* ($ALPlus | $HL) $CM* $PO;


# LB 25
($CM* ($PR | $PO))? ($CM* ($CL | $CP))? ($CM* ($NU | $IS | $SY))* $CM* $NU ($CM* ($OP | $HY))? ($CM* ($PR | $PO))?;

# LB 26
$CM* ($H3 | $H2 | $JV | $JL) $CM* $JL;
$CM* ($JT | $JV) $CM* ($H2 | $JV);
$CM* $JT $CM* ($H3 | $JT);

# LB 27
$CM* $IN $CM* ($H3 | $H2 | $JT | $JV | $JL);
$CM* $PO $CM* ($H3 | $H2 | $JT | $JV | $JL);
$CM* ($H3 | $H2 | $JT | $JV | $JL) $CM* $PR;

# LB 28
$CM* ($ALPlus | $HL) $CM* ($ALPlus | $HL);


# LB 29
$CM* ($ALPlus | $HL) $CM* $IS;

# LB 30
$CM* $OP $CM* ($ALPlus | $HL | $NU);
$CM* ($ALPlus | $HL | $NU) $CM* $CP;

# LB 30a
$CM* $RI $CM* $RI;

# Special reverse rule for people & body part emoji:
# don't break between relevant emoji and $EmojiMods
$EmojiMods $EmojiVar? $EmojiForMods;

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

!!safe_reverse;

# LB 9
$CM+ [^$CM $BK $CR $LF $NL $ZW $SP];
$CM+ $SP / .;

# LB 14
$SP+ $CM* $OP;

# LB 15
$SP+ $CM* $QU;

# LB 16
$SP+ $CM* ($CL | $CP);

# LB 17
$SP+ $CM* $B2;

# LB 21
$CM* ($HY | $BA | $HH) $CM* $HL;

# LB 25
($CM* ($IS | $SY))+ $CM* $NU;
($CL | $CP) $CM* ($NU | $IS | $SY);

# For dictionary-based break
$dictionary $dictionary;

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

!!safe_forward;

# Skip forward over all character classes that are involved in
#   rules containing patterns with possibly more than one char
#   of context.
#
#  It might be slightly more efficient to have specific rules
#  instead of one generic one, but only if we could
#  turn off rule chaining.  We don't want to move more
#  than necessary.
#
[$CM $OP $QU $CL $CP $B2 $PR $HY $BA $SP $dictionary]+ [^$CM $OP $QU $CL $CP $B2 $PR $HY $BA $dictionary];
$dictionary $dictionary;
Commit	Line	Data
08b89b0a A	1	# Copyright (c) 2002-2015 International Business Machines Corporation and
	2	# others. All Rights Reserved.
	3	#
	4	# file: line_normal_fi.txt
	5	#
	6	# Line Breaking Rules
	7	# Implement default line breaking as defined by
	8	# Unicode Standard Annex #14 Revision 29 for Unicode 6.2
	9	# http://www.unicode.org/reports/tr14/
	10	# tailored as noted in 2nd paragraph below..
	11	#
	12	# TODO: Rule LB 8 remains as it was in Unicode 5.2
	13	# This is only because of a limitation of ICU break engine implementation,
	14	# not because the older behavior is desirable.
	15	#
	16	# This tailors the line break behavior both for Finnish and to correpond to CSS
	17	# line-break=normal (BCP47 -u-lb-normal) as defined for languages other than
	18	# Chinese & Japanese.
	19	# It sets characters of class CJ to behave like ID.
	20
	21	#
	22	# Character Classes defined by TR 14.
	23	#
	24
	25	!!chain;
	26	!!LBCMNoChain;
	27
	28
	29	!!lookAheadHardBreak;
	30	#
	31	# !!lookAheadHardBreak Described here because it is (as yet) undocumented elsewhere
	32	# and only used for the line break rules.
	33	#
	34	# It is used in the implementation of rule LB 10
	35	# which says to treat any combining mark that is not attached to a base
	36	# character as if it were of class AL (alphabetic).
	37	#
	38	# The problem occurs in the reverse rules.
	39	#
	40	# Consider a sequence like, with correct breaks as shown
	41	# LF ID CM AL AL
	42	# ^ ^ ^
	43	# Then consider the sequence without the initial ID (ideographic)
	44	# LF CM AL AL
	45	# ^ ^
	46	# Our CM, which in the first example was attached to the ideograph,
	47	# is now unattached, becomes an alpha, and joins in with the other
	48	# alphas.
	49	#
	50	# When iterating forwards, these sequences do not present any problems
	51	# When iterating backwards, we need to look ahead when encountering
	52	# a CM to see whether it attaches to something further on or not.
	53	# (Look-ahead in a reverse rule is looking towards the start)
	54	#
	55	# If the CM is unattached, we need to force a break.
	56	#
	57	# !!lookAheadHardBreak forces the run time state machine to
	58	# stop immediately when a look ahead rule ( '/' operator) matches,
	59	# and set the match position to that of the look-ahead operator,
	60	# no matter what other rules may be in play at the time.
	61	#
	62	# See rule LB 19 for an example.
	63	#
	64
65	$AI = [:LineBreak = Ambiguous:];
66	$AL = [:LineBreak = Alphabetic:];
67	$BA = [[:LineBreak = Break_After:] - [\u2010]];
68	$HH = [\u2010];
69	$BB = [:LineBreak = Break_Before:];
70	$BK = [:LineBreak = Mandatory_Break:];
71	$B2 = [:LineBreak = Break_Both:];
72	$CB = [:LineBreak = Contingent_Break:];
73	$CJ = [:LineBreak = Conditional_Japanese_Starter:];
74	$CL = [:LineBreak = Close_Punctuation:];
75	$CM = [:LineBreak = Combining_Mark:];
76	$CP = [:LineBreak = Close_Parenthesis:];
77	$CR = [:LineBreak = Carriage_Return:];
78	$EX = [:LineBreak = Exclamation:];
79	$GL = [:LineBreak = Glue:];
80	$HL = [:LineBreak = Hebrew_Letter:];
81	$HY = [:LineBreak = Hyphen:];
82	$H2 = [:LineBreak = H2:];
83	$H3 = [:LineBreak = H3:];
84	$ID = [[:LineBreak = Ideographic:] $CJ];
85	$IN = [:LineBreak = Inseperable:];
86	$IS = [:LineBreak = Infix_Numeric:];
87	$JL = [:LineBreak = JL:];
88	$JV = [:LineBreak = JV:];
89	$JT = [:LineBreak = JT:];
90	$LF = [:LineBreak = Line_Feed:];
91	$NL = [:LineBreak = Next_Line:];
92	$NS = [:LineBreak = Nonstarter:];
93	$NU = [:LineBreak = Numeric:];
94	$OP = [:LineBreak = Open_Punctuation:];
95	$PO = [:LineBreak = Postfix_Numeric:];
96	$PR = [:LineBreak = Prefix_Numeric:];
97	$QU = [:LineBreak = Quotation:];
98	$RI = [:LineBreak = Regional_Indicator:];
99	$SA = [:LineBreak = Complex_Context:];
100	$SG = [:LineBreak = Surrogate:];
101	$SP = [:LineBreak = Space:];
102	$SY = [:LineBreak = Break_Symbols:];
103	$WJ = [:LineBreak = Word_Joiner:];
104	$XX = [:LineBreak = Unknown:];
105	$ZW = [:LineBreak = ZWSpace:];
106
107	# Special character classes for people & body part emoji:
108	# Subsets of $CM:
109	$ZWJ = \u200D;
110	$EmojiVar = \uFE0F;
111	# The following are subsets of $ID
b801cf36	112	$EmojiForSeqs = [\u2764 \U0001F441 \U0001F466-\U0001F469 \U0001F48B \U0001F5E8];
a961784b	113	$EmojiForMods = [\u261D \u26F9 \u270A-\u270D \U0001F385 \U0001F3C3-\U0001F3C4 \U0001F3CA-\U0001F3CB \U0001F442-\U0001F443 \U0001F446-\U0001F450 \U0001F466-\U0001F469 \U0001F46E-\U0001F478 \U0001F47C \U0001F481-\U0001F483 \U0001F485-\U0001F487 \U0001F4AA \U0001F575 \U0001F590 \U0001F595 \U0001F596 \U0001F645-\U0001F647 \U0001F64B-\U0001F64F \U0001F6A3 \U0001F6B4-\U0001F6B6 \U0001F6C0 \U0001F918];
08b89b0a A	114	$EmojiMods = [\U0001F3FB-\U0001F3FF];
	115
	116	# Dictionary character set, for triggering language-based break engines. Currently
	117	# limited to LineBreak=Complex_Context. Note that this set only works in Unicode
	118	# 5.0 or later as the definition of Complex_Context was corrected to include all
	119	# characters requiring dictionary break.
	120
	121	$dictionary = [:LineBreak = Complex_Context:];
	122
	123	#
	124	# Rule LB1. By default, treat AI (characters with ambiguous east Asian width),
	125	# SA (South East Asian: Thai, Lao, Khmer)
	126	# SG (Unpaired Surrogates)
	127	# XX (Unknown, unassigned)
	128	# as $AL (Alphabetic)
	129	#
	130	$ALPlus = [$AL $AI $SA $SG $XX];
	131
	132	#
	133	# Combining Marks. X $CM* behaves as if it were X. Rule LB6.
	134	#
	135	$ALcm = $ALPlus $CM*;
	136	$BAcm = $BA $CM*;
	137	$HHcm = $HH $CM*;
	138	$BBcm = $BB $CM*;
	139	$B2cm = $B2 $CM*;
	140	$CLcm = $CL $CM*;
	141	$CPcm = $CP $CM*;
	142	$EXcm = $EX $CM*;
	143	$GLcm = $GL $CM*;
	144	$HLcm = $HL $CM*;
	145	$HYcm = $HY $CM*;
	146	$H2cm = $H2 $CM*;
	147	$H3cm = $H3 $CM*;
	148	$IDcm = $ID $CM*;
	149	$INcm = $IN $CM*;
	150	$IScm = $IS $CM*;
	151	$JLcm = $JL $CM*;
	152	$JVcm = $JV $CM*;
	153	$JTcm = $JT $CM*;
	154	$NScm = $NS $CM*;
	155	$NUcm = $NU $CM*;
	156	$OPcm = $OP $CM*;
	157	$POcm = $PO $CM*;
	158	$PRcm = $PR $CM*;
	159	$QUcm = $QU $CM*;
	160	$RIcm = $RI $CM*;
	161	$SYcm = $SY $CM*;
	162	$WJcm = $WJ $CM*;
	163
	164	## -------------------------------------------------
	165
	166	!!forward;
	167
	168	#
	169	# Each class of character can stand by itself as an unbroken token, with trailing combining stuff
	170	#
	171	$ALPlus $CM+;
	172	$BA $CM+;
	173	$HH $CM+;
	174	$BB $CM+;
	175	$B2 $CM+;
	176	$CL $CM+;
	177	$CP $CM+;
178	$EX $CM+;
179	$GL $CM+;
180	$HL $CM+;
181	$HY $CM+;
182	$H2 $CM+;
183	$H3 $CM+;
184	$ID $CM+;
185	$IN $CM+;
186	$IS $CM+;
187	$JL $CM+;
188	$JV $CM+;
189	$JT $CM+;
190	$NS $CM+;
191	$NU $CM+;
192	$OP $CM+;
193	$PO $CM+;
194	$PR $CM+;
195	$QU $CM+;
196	$RI $CM+;
197	$SY $CM+;
198	$WJ $CM+;
199
200	#
201	# CAN_CM is the set of characters that may combine with CM combining chars.
202	# Note that Linebreak UAX 14's concept of a combining char and the rules
203	# for what they can combine with are _very_ different from the rest of Unicode.
204	#
205	# Note that $CM itself is left out of this set. If CM is needed as a base
206	# it must be listed separately in the rule.
207	#
208	$CAN_CM = [^$SP $BK $CR $LF $NL $ZW $CM]; # Bases that can take CMs
209	$CANT_CM = [ $SP $BK $CR $LF $NL $ZW $CM]; # Bases that can't take CMs
210
211	#
212	# AL_FOLLOW set of chars that can unconditionally follow an AL
213	# Needed in rules where stand-alone $CM s are treated as AL.
214	# Chaining is disabled with CM because it causes other failures,
215	# so for this one case we need to manually list out longer sequences.
216	#
217	$AL_FOLLOW_NOCM = [$BK $CR $LF $NL $ZW $SP];
218	$AL_FOLLOW_CM = [$CL $CP $EX $HL $IS $SY $WJ $GL $OP $QU $BA $HH $HY $NS $IN $NU $ALPlus];
219	$AL_FOLLOW = [$AL_FOLLOW_NOCM $AL_FOLLOW_CM];
220
221
222	#
223	# Rule LB 4, 5 Mandatory (Hard) breaks.
224	#
225	$LB4Breaks = [$BK $CR $LF $NL];
226	$LB4NonBreaks = [^$BK $CR $LF $NL];
227	$CR $LF {100};
228
229	#
230	# LB 6 Do not break before hard line breaks.
231	#
232	$LB4NonBreaks? $LB4Breaks {100}; # LB 5 do not break before hard breaks.
233	$CAN_CM $CM* $LB4Breaks {100};
234	$CM+ $LB4Breaks {100};
235
236	# LB 7 x SP
237	# x ZW
238	$LB4NonBreaks [$SP $ZW];
239	$CAN_CM $CM* [$SP $ZW];
240	$CM+ [$SP $ZW];
241
242	#
243	# LB 8 Break after zero width space
244	# TODO: ZW SP* <break>
245	# An engine change is required to write the reverse rule for this.
246	# For now, leave the Unicode 5.2 rule, ZW <break>
247	#
248	$LB8Breaks = [$LB4Breaks $ZW];
249	$LB8NonBreaks = [[$LB4NonBreaks] - [$ZW]];
250
251
252	# Special forward rule for people & body part emoji:
253	# don't break $ZWJ from subsequent $EmojiForSeqs
254	$EmojiForSeqs $EmojiVar? $EmojiMods? $ZWJ $EmojiForSeqs;
255
256	# LB 9 Combining marks. X $CM needs to behave like X, where X is not $SP, $BK $CR $LF $NL
257	# $CM not covered by the above needs to behave like $AL
258	# See definition of $CAN_CM.
259
260	$CAN_CM $CM+; # Stick together any combining sequences that don't match other rules.
261	$CM+;
262
263	#
264	# LB 11 Do not break before or after WORD JOINER & related characters.
265	#
266	$CAN_CM $CM* $WJcm;
267	$LB8NonBreaks $WJcm;
268	$CM+ $WJcm;
269
270	$WJcm $CANT_CM;
271	$WJcm $CAN_CM $CM*;
272
273	#
274	# LB 12 Do not break after NBSP and related characters.
275	# GL x
276	#
277	$GLcm $CAN_CM $CM*;
278	$GLcm $CANT_CM;
279
280	#
281	# LB 12a Do not break before NBSP and related characters ...
282	# [^SP BA HY] x GL
283	#
284	[[$LB8NonBreaks] - [$SP $BA $HH $HY]] $CM* $GLcm;
285	$CM+ GLcm;
286
287
288
289	#
290	# LB 13 Don't break before ']' or '!' or ';' or '/', even after spaces.
291	#
292	$LB8NonBreaks $CL;
293	$CAN_CM $CM* $CL;
294	$CM+ $CL; # by rule 10, stand-alone CM behaves as AL
295
296	$LB8NonBreaks $CP;
297	$CAN_CM $CM* $CP;
298	$CM+ $CP; # by rule 10, stand-alone CM behaves as AL
299
300	$LB8NonBreaks $EX;
301	$CAN_CM $CM* $EX;
302	$CM+ $EX; # by rule 10, stand-alone CM behaves as AL
303
304	$LB8NonBreaks $IS;
305	$CAN_CM $CM* $IS;
306	$CM+ $IS; # by rule 10, stand-alone CM behaves as AL
307
308	$LB8NonBreaks $SY;
309	$CAN_CM $CM* $SY;
310	$CM+ $SY; # by rule 10, stand-alone CM behaves as AL
311
312
313	#
314	# LB 14 Do not break after OP, even after spaces
315	#
316	$OPcm $SP* $CAN_CM $CM*;
317	$OPcm $SP* $CANT_CM;
318
319	$OPcm $SP+ $CM+ $AL_FOLLOW?; # by rule 10, stand-alone CM behaves as AL
320
321	# LB 15
322	$QUcm $SP* $OPcm;
323
324	# LB 16
325	($CLcm \| $CPcm) $SP* $NScm;
326
327	# LB 17
328	$B2cm $SP* $B2cm;
329
330	#
331	# LB 18 Break after spaces.
332	#
333	$LB18NonBreaks = [$LB8NonBreaks - [$SP]];
334	$LB18Breaks = [$LB8Breaks $SP];
335
336
337	# LB 19
338	# x QU
339	$LB18NonBreaks $CM* $QUcm;
340	$CM+ $QUcm;
341
342	# QU x
343	$QUcm .?;
344	$QUcm $LB18NonBreaks $CM*; # Don't let a combining mark go onto $CR, $BK, etc.
345	# TODO: I don't think this rule is needed.
346
347
348	# LB 20
349	# <break> $CB
350	# $CB <break>
351
352	$LB20NonBreaks = [$LB18NonBreaks - $CB];
353
354	# LB 20.09 added rule for Finnish tailoring
355	# LB 21 x (BA \| HY \| NS)
356	# BB x
357	#
358	$LB20NonBreaks $CM* ($BAcm \| $HHcm \| $HYcm \| $NScm) / $AL;
359	$LB20NonBreaks $CM* ($BAcm \| $HHcm \| $HYcm \| $NScm);
360	($HY \| $HH) $AL;
361
362	$BBcm [^$CB]; # $BB x
363	$BBcm $LB20NonBreaks $CM*;
364
365	# LB 21a Don't break after Hebrew + Hyphen
366	# HL (HY \| BA) x
367	#
368	$HLcm ($HYcm \| $BAcm \| $HHcm) [^$CB]?;
369
370	# LB 21b (forward) Don't break between SY and HL
371	# (break between HL and SY already disallowed by LB 13 above)
372	$SYcm $HLcm;
373
374	# LB 22
375	($ALcm \| $HLcm) $INcm;
376	$CM+ $INcm; # by rule 10, any otherwise unattached CM behaves as AL
377	$IDcm $INcm;
378	$INcm $INcm;
379	$NUcm $INcm;
380
381
382	# $LB 23
383	$IDcm $POcm;
384	$ALcm $NUcm; # includes $LB19
385	$HLcm $NUcm;
386	$CM+ $NUcm; # Rule 10, any otherwise unattached CM behaves as AL
387	$NUcm $ALcm;
388	$NUcm $HLcm;
389
390	#
391	# LB 24
392	#
393	$PRcm $IDcm;
394	$PRcm ($ALcm \| $HLcm);
395	$POcm ($ALcm \| $HLcm);
396
397	#
398	# LB 25 Numbers.
399	#
400	($PRcm \| $POcm)? ($OPcm \| $HYcm)? $NUcm ($NUcm \| $SYcm \| $IScm)* ($CLcm \| $CPcm)? ($PRcm \| $POcm)?;
401
402	# LB 26 Do not break a Korean syllable
403	#
404	$JLcm ($JLcm \| $JVcm \| $H2cm \| $H3cm);
405	($JVcm \| $H2cm) ($JVcm \| $JTcm);
406	($JTcm \| $H3cm) $JTcm;
407
408	# LB 27 Treat korean Syllable Block the same as ID (don't break it)
409	($JLcm \| $JVcm \| $JTcm \| $H2cm \| $H3cm) $INcm;
410	($JLcm \| $JVcm \| $JTcm \| $H2cm \| $H3cm) $POcm;
411	$PRcm ($JLcm \| $JVcm \| $JTcm \| $H2cm \| $H3cm);
412
413
414	# LB 28 Do not break between alphabetics
415	#
416	($ALcm \| $HLcm) ($ALcm \| $HLcm);
417	$CM+ ($ALcm \| $HLcm); # The $CM+ is from rule 10, an unattached CM is treated as AL
418
419	# LB 29
420	$IScm ($ALcm \| $HLcm);
421
422	# LB 30
423	($ALcm \| $HLcm \| $NUcm) $OPcm;
424	$CM+ $OPcm; # The $CM+ is from rule 10, an unattached CM is treated as AL.
425	$CPcm ($ALcm \| $HLcm \| $NUcm);
426
427	# LB 30a Do not break between regional indicators.
428	$RIcm $RIcm;
429
430	# Special forward rule for people & body part emoji:
431	# don't break between relevant emoji and $EmojiMods
432	$EmojiForMods $EmojiVar? $EmojiMods;
433
434	#
435	# Reverse Rules.
436	#
437	## -------------------------------------------------
438
439	!!reverse;
440
441	$CM+ $ALPlus;
442	$CM+ $BA;
443	$CM+ $HH;
444	$CM+ $BB;
445	$CM+ $B2;
446	$CM+ $CL;
447	$CM+ $CP;
448	$CM+ $EX;
449	$CM+ $GL;
450	$CM+ $HL;
451	$CM+ $HY;
452	$CM+ $H2;
453	$CM+ $H3;
454	$CM+ $ID;
455	$CM+ $IN;
456	$CM+ $IS;
457	$CM+ $JL;
458	$CM+ $JV;
459	$CM+ $JT;
460	$CM+ $NS;
461	$CM+ $NU;
462	$CM+ $OP;
463	$CM+ $PO;
464	$CM+ $PR;
465	$CM+ $QU;
466	$CM+ $RI;
467	$CM+ $SY;
468	$CM+ $WJ;
469	$CM+;
470
471
472	#
473	# Sequences of the form (shown forwards)
474	# [CANT_CM] <break> [CM] [whatever]
475	# The CM needs to behave as an AL
476	#
477	$AL_FOLLOW $CM+ / (
478	[$BK $CR $LF $NL $ZW {eof}] \|
479	$SP+ $CM+ $SP \|
480	$SP+ $CM* ([^$OP $CM $SP] \| [$AL {eof}])); # if LB 14 will match, need to surpress this break.
481	# LB14 says OP SP* x .
482	# becomes OP SP* x AL
483	# becomes OP SP* x CM+ AL_FOLLOW
484	#
485	# Further note: the $AL in [$AL {eof}] is only to work around
486	# a rule compiler bug which complains about
487	# empty sets otherwise.
488
489	#
490	# Sequences of the form (shown forwards)
491	# [CANT_CM] <break> [CM] <break> [PR]
492	# The CM needs to behave as an AL
493	# This rule is concerned about getting the second of the two <breaks> in place.
494	#
495
496	[$PR ] / $CM+ [$BK $CR $LF $NL $ZW $SP {eof}];
497
498
499
500	# LB 4, 5, 5
501
502	$LB4Breaks [$LB4NonBreaks-$CM];
503	$LB4Breaks $CM+ $CAN_CM;
504	$LF $CR;
505
506
507	# LB 7 x SP
508	# x ZW
509	[$SP $ZW] [$LB4NonBreaks-$CM];
510	[$SP $ZW] $CM+ $CAN_CM;
511
512	# LB 8 ZW SP* <break>
513	# TODO: to implement this, we need more than one look-ahead hard break in play at a time.
514	# Requires an engine enhancement.
515	# / $SP* $ZW
516
517	# Special reverse rule for people & body part emoji:
518	# don't break $ZWJ from subsequent $EmojiForSeqs
519	$EmojiForSeqs $ZWJ $EmojiMods? $EmojiVar? $EmojiForSeqs;
520
521	# LB 9,10 Combining marks.
522	# X $CM needs to behave like X, where X is not $SP or controls.
523	# $CM not covered by the above needs to behave like $AL
524	# Stick together any combining sequences that don't match other rules.
525	$CM+ $CAN_CM;
526
527
528	# LB 11
529	$CM* $WJ $CM* $CAN_CM;
530	$CM* $WJ [$LB8NonBreaks-$CM];
531
532	$CANT_CM $CM* $WJ;
533	$CM* $CAN_CM $CM* $WJ;
534
535	# LB 12a
536	# [^SP BA HY] x GL
537	#
538	$CM* $GL $CM* [$LB8NonBreaks-[$CM $SP $BA $HH $HY]];
539
540	# LB 12
541	# GL x
542	#
543	$CANT_CM $CM* $GL;
544	$CM* $CAN_CM $CM* $GL;
545
546
547	# LB 13
548	$CL $CM+ $CAN_CM;
549	$CP $CM+ $CAN_CM;
550	$EX $CM+ $CAN_CM;
551	$IS $CM+ $CAN_CM;
552	$SY $CM+ $CAN_CM;
553
554	$CL [$LB8NonBreaks-$CM];
555	$CP [$LB8NonBreaks-$CM];
556	$EX [$LB8NonBreaks-$CM];
557	$IS [$LB8NonBreaks-$CM];
558	$SY [$LB8NonBreaks-$CM];
559
560	# Rule 13 & 14 taken together for an edge case.
561	# Match this, shown forward
562	# OP SP+ ($CM+ behaving as $AL) (CL \| CP \| EX \| IS \| IY)
563	# This really wants to chain at the $CM+ (which is acting as an $AL)
564	# except for $CM chaining being disabled.
565	[$CL $CP $EX $IS $SY] $CM+ $SP+ $CM* $OP;
566
567	# LB 14 OP SP* x
568	#
569	$CM* $CAN_CM $SP* $CM* $OP;
570	$CANT_CM $SP* $CM* $OP;
571	$AL_FOLLOW? $CM+ $SP $SP* $CM* $OP; # by LB 10, behaves like $AL_FOLLOW? $AL $SP* $CM* $OP
572
573	$AL_FOLLOW_NOCM $CM+ $SP+ $CM* $OP;
574	$CM* $AL_FOLLOW_CM $CM+ $SP+ $CM* $OP;
575	$SY $CM $SP+ $OP; # TODO: Experiment. Remove.
576
577
578
579	# LB 15
580	$CM* $OP $SP* $CM* $QU;
581
582	# LB 16
583	$CM* $NS $SP* $CM* ($CL \| $CP);
584
585	# LB 17
586	$CM* $B2 $SP* $CM* $B2;
587
588	# LB 18 break after spaces
589	# Nothing explicit needed here.
590
591
592	#
593	# LB 19
594	#
595	$CM* $QU $CM* $CAN_CM; # . x QU
596	$CM* $QU $LB18NonBreaks;
597
598
599	$CM* $CAN_CM $CM* $QU; # QU x .
600	$CANT_CM $CM* $QU;
601
602	#
603	# LB 20 Break before and after CB.
604	# nothing needed here.
605	#
606
607	# LB 20.09 added rule for Finnish tailoring
608	$AL ($HY \| $HH) / $SP;
609
610	# LB 21
611	$CM* ($BA \| $HH \| $HY \| $NS) $CM* [$LB20NonBreaks-$CM]; # . x (BA \| HY \| NS)
612
613	$CM* [$LB20NonBreaks-$CM] $CM* $BB; # BB x .
614	[^$CB] $CM* $BB; #
615
616	# LB21a
617	[^$CB] $CM* ($HY \| $BA \| $HH) $CM* $HL;
618
619	# LB21b (reverse)
620	$CM* $HL $CM* $SY;
621
622	# LB 22
623	$CM* $IN $CM* ($ALPlus \| $HL);
624	$CM* $IN $CM* $ID;
625	$CM* $IN $CM* $IN;
626	$CM* $IN $CM* $NU;
627
628	# LB 23
629	$CM* $PO $CM* $ID;
630	$CM* $NU $CM* ($ALPlus \| $HL);
631	$CM* ($ALPlus \| $HL) $CM* $NU;
632
633	# LB 24
634	$CM* $ID $CM* $PR;
635	$CM* ($ALPlus \| $HL) $CM* $PR;
636	$CM* ($ALPlus \| $HL) $CM* $PO;
637
638
639	# LB 25
640	($CM* ($PR \| $PO))? ($CM* ($CL \| $CP))? ($CM* ($NU \| $IS \| $SY))* $CM* $NU ($CM* ($OP \| $HY))? ($CM* ($PR \| $PO))?;
641
642	# LB 26
643	$CM* ($H3 \| $H2 \| $JV \| $JL) $CM* $JL;
644	$CM* ($JT \| $JV) $CM* ($H2 \| $JV);
645	$CM* $JT $CM* ($H3 \| $JT);
646
647	# LB 27
648	$CM* $IN $CM* ($H3 \| $H2 \| $JT \| $JV \| $JL);
649	$CM* $PO $CM* ($H3 \| $H2 \| $JT \| $JV \| $JL);
650	$CM* ($H3 \| $H2 \| $JT \| $JV \| $JL) $CM* $PR;
651
652	# LB 28
653	$CM* ($ALPlus \| $HL) $CM* ($ALPlus \| $HL);
654
655
656	# LB 29
657	$CM* ($ALPlus \| $HL) $CM* $IS;
658
659	# LB 30
660	$CM* $OP $CM* ($ALPlus \| $HL \| $NU);
661	$CM* ($ALPlus \| $HL \| $NU) $CM* $CP;
662
663	# LB 30a
664	$CM* $RI $CM* $RI;
665
666	# Special reverse rule for people & body part emoji:
667	# don't break between relevant emoji and $EmojiMods
668	$EmojiMods $EmojiVar? $EmojiForMods;
669
670	## -------------------------------------------------
671
672	!!safe_reverse;
673
674	# LB 9
675	$CM+ [^$CM $BK $CR $LF $NL $ZW $SP];
676	$CM+ $SP / .;
677
678	# LB 14
679	$SP+ $CM* $OP;
680
681	# LB 15
682	$SP+ $CM* $QU;
683
684	# LB 16
685	$SP+ $CM* ($CL \| $CP);
686
687	# LB 17
688	$SP+ $CM* $B2;
689
690	# LB 21
691	$CM* ($HY \| $BA \| $HH) $CM* $HL;
692
693	# LB 25
694	($CM* ($IS \| $SY))+ $CM* $NU;
695	($CL \| $CP) $CM* ($NU \| $IS \| $SY);
696
697	# For dictionary-based break
698	$dictionary $dictionary;
699
700	## -------------------------------------------------
701
702	!!safe_forward;
703
704	# Skip forward over all character classes that are involved in
705	# rules containing patterns with possibly more than one char
706	# of context.
707	#
708	# It might be slightly more efficient to have specific rules
709	# instead of one generic one, but only if we could
710	# turn off rule chaining. We don't want to move more
711	# than necessary.
712	#
713	[$CM $OP $QU $CL $CP $B2 $PR $HY $BA $SP $dictionary]+ [^$CM $OP $QU $CL $CP $B2 $PR $HY $BA $dictionary];
714	$dictionary $dictionary;
715