Index: source/data/brkitr/rules/line_loose_cj.txt |
diff --git a/source/data/brkitr/line_loose_cj.txt b/source/data/brkitr/rules/line_loose_cj.txt |
similarity index 51% |
rename from source/data/brkitr/line_loose_cj.txt |
rename to source/data/brkitr/rules/line_loose_cj.txt |
index 9934fe3aa1d077407f538b8d3ba6a649fdf7622d..9b781f875a6dedad5e3e3e8f9b0c282b6f68372f 100644 |
--- a/source/data/brkitr/line_loose_cj.txt |
+++ b/source/data/brkitr/rules/line_loose_cj.txt |
@@ -1,13 +1,19 @@ |
-# Copyright (c) 2002-2015 International Business Machines Corporation and |
+# Copyright (C) 2016 and later: Unicode, Inc. and others. |
+# License & terms of use: http://www.unicode.org/copyright.html |
+# Copyright (c) 2002-2016 International Business Machines Corporation and |
# others. All Rights Reserved. |
# |
# file: line_loose_cj.txt |
# |
# Line Breaking Rules |
-# Implement default line breaking as defined by |
-# Unicode Standard Annex #14 Revision 34 for Unicode 8.0 |
+# Implement default line breaking as defined by |
+# Unicode Standard Annex #14 Revision 37 for Unicode 9.0 |
# http://www.unicode.org/reports/tr14/ |
-# tailored as noted in 2nd paragraph below.. |
+# |
+# Includes extensions to the handling of emoji ZWJ sequences from |
+# https://goo.gl/cluFCn |
+# |
+# 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, |
@@ -33,44 +39,6 @@ |
# |
!!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:]; |
@@ -82,9 +50,11 @@ $B2 = [:LineBreak = Break_Both:]; |
$CB = [:LineBreak = Contingent_Break:]; |
$CJ = [:LineBreak = Conditional_Japanese_Starter:]; |
$CL = [:LineBreak = Close_Punctuation:]; |
-$CM = [:LineBreak = Combining_Mark:]; |
+# $CM = [:LineBreak = Combining_Mark:]; |
$CP = [:LineBreak = Close_Parenthesis:]; |
$CR = [:LineBreak = Carriage_Return:]; |
+$EB = [[:LineBreak = EB:]\U0001F3C2\U0001F3C7\U0001F3CC\U0001F46A-\U0001F46D\U0001F46F\U0001F574\U0001F6CC]; |
+$EM = [:LineBreak = EM:]; |
$EXX = [\uFF01 \uFF1F]; |
$EX = [[:LineBreak = Exclamation:] - $EXX]; |
$GL = [:LineBreak = Glue:]; |
@@ -92,6 +62,7 @@ $HL = [:LineBreak = Hebrew_Letter:]; |
$HY = [:LineBreak = Hyphen:]; |
$H2 = [:LineBreak = H2:]; |
$H3 = [:LineBreak = H3:]; |
+# CSS Loose tailoring: CJ resolves to ID |
$ID = [[:LineBreak = Ideographic:] $CJ]; |
$IN = [:LineBreak = Inseperable:]; |
$IS = [:LineBreak = Infix_Numeric:]; |
@@ -117,100 +88,38 @@ $SY = [:LineBreak = Break_Symbols:]; |
$WJ = [:LineBreak = Word_Joiner:]; |
$XX = [:LineBreak = Unknown:]; |
$ZW = [:LineBreak = ZWSpace:]; |
+$ZWJ = [:LineBreak = ZWJ:]; |
+ |
+$EmojiNRK = [[\p{Emoji}] - [$RI \u002a\u00230-9©®™〰〽]]; |
+# Data for Extended Pictographic scraped from CLDR common/properties/ExtendedPictographic.txt, r12773 |
+$Extended_Pict = [\U0001F774-\U0001F77F\u2700-\u2701\u2703-\u2704\u270E\u2710-\u2711\u2765-\u2767\U0001F030-\U0001F093\U0001F094-\U0001F09F\U0001F10D-\U0001F10F\U0001F12F\U0001F16C-\U0001F16F\U0001F1AD-\U0001F1E5\U0001F203-\U0001F20F\U0001F23C-\U0001F23F\U0001F249-\U0001F24F\U0001F252-\U0001F2FF\U0001F7D5-\U0001F7FF\U0001F000-\U0001F003\U0001F005-\U0001F02B\U0001F02C-\U0001F02F\U0001F322-\U0001F323\U0001F394-\U0001F395\U0001F398\U0001F39C-\U0001F39D\U0001F3F1-\U0001F3F2\U0001F3F6\U0001F4FE\U0001F53E-\U0001F548\U0001F54F\U0001F568-\U0001F56E\U0001F571-\U0001F572\U0001F57B-\U0001F586\U0001F588-\U0001F589\U0001F58E-\U0001F58F\U0001F591-\U0001F594\U0001F597-\U0001F5A3\U0001F5A6-\U0001F5A7\U0001F5A9-\U0001F5B0\U0001F5B3-\U0001F5BB\U0001F5BD-\U0001F5C1\U0001F5C5-\U0001F5D0\U0001F5D4-\U0001F5DB\U0001F5DF-\U0001F5E0\U0001F5E2\U0001F5E4-\U0001F5E7\U0001F5E9-\U0001F5EE\U0001F5F0-\U0001F5F2\U0001F5F4-\U0001F5F9\u2605\u2607-\u260D\u260F-\u2610\u2612\u2616-\u2617\u2619-\u261C\u261E-\u261F\u2621\u2624-\u2625\u2627-\u2629\u262B-\u262D\u2630-\u2637\u263B-\u2647\u2654-\u265F\u2661-\u2662\u2664\u2667\u2669-\u267A\u267C-\u267E\u2680-\u2691\u2695\u2698\u269A\u269D-\u269F\u26A2-\u26A9\u26AC-\u26AF\u26B2-\u26BC\u26BF-\u26C3\u26C6-\u26C7\u26C9-\u26CD\u26D0\u26D2\u26D5-\u26E8\u26EB-\u26EF\u26F6\u26FB-\u26FC\u26FE-\u26FF\u2388\U0001FA00-\U0001FFFD\U0001F0A0-\U0001F0AE\U0001F0B1-\U0001F0BF\U0001F0C1-\U0001F0CF\U0001F0D1-\U0001F0F5\U0001F0AF-\U0001F0B0\U0001F0C0\U0001F0D0\U0001F0F6-\U0001F0FF\U0001F80C-\U0001F80F\U0001F848-\U0001F84F\U0001F85A-\U0001F85F\U0001F888-\U0001F88F\U0001F8AE-\U0001F8FF\U0001F900-\U0001F90F\U0001F91F\U0001F928-\U0001F92F\U0001F931-\U0001F932\U0001F93F\U0001F94C-\U0001F94F\U0001F95F-\U0001F97F\U0001F992-\U0001F9BF\U0001F9C1-\U0001F9FF\U0001F6C6-\U0001F6CA\U0001F6E6-\U0001F6E8\U0001F6EA\U0001F6F1-\U0001F6F2\U0001F6D3-\U0001F6DF\U0001F6ED-\U0001F6EF\U0001F6F7-\U0001F6FF]; |
+ |
+# By LB9, a ZWJ also behaves as a CM. Including it in the definition of CM avoids having to explicitly |
+# list it in the numerous rules that use CM. |
+# By LB1, SA characters with general categor of Mn or Mc also resolve to CM. |
+ |
+$CM = [[:LineBreak = Combining_Mark:] $ZWJ [$SA & [[:Mn:][:Mc:]]]]; |
# 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. |
+# limited to LineBreak=Complex_Context (SA). |
-$dictionary = [:LineBreak = Complex_Context:]; |
+$dictionary = [$SA]; |
# |
# Rule LB1. By default, treat AI (characters with ambiguous east Asian width), |
-# SA (South East Asian: Thai, Lao, Khmer) |
+# SA (Dictionary chars, excluding Mn and Mc) |
# 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 $CM*; |
-$BAXcm = $BAX $CM*; |
-$BBcm = $BB $CM*; |
-$B2cm = $B2 $CM*; |
-$CLcm = $CL $CM*; |
-$CPcm = $CP $CM*; |
-$EXcm = $EX $CM*; |
-$EXXcm = $EXX $CM*; |
-$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 $CM*; |
-$NSXcm = $NSX $CM*; |
-$NUcm = $NU $CM*; |
-$OPcm = $OP $CM*; |
-$POcm = $PO $CM*; |
-$POXcm = $POX $CM*; |
-$PRcm = $PR $CM*; |
-$PRXcm = $PRX $CM*; |
-$QUcm = $QU $CM*; |
-$RIcm = $RI $CM*; |
-$SYcm = $SY $CM*; |
-$WJcm = $WJ $CM*; |
+$ALPlus = [$AL $AI $SG $XX [$SA-[[:Mn:][:Mc:]]]]; |
+ |
## ------------------------------------------------- |
!!forward; |
# |
-# Each class of character can stand by itself as an unbroken token, with trailing combining stuff |
-# |
-$ALPlus $CM+; |
-$BA $CM+; |
-$BAX $CM+; |
-$BB $CM+; |
-$B2 $CM+; |
-$CL $CM+; |
-$CP $CM+; |
-$EX $CM+; |
-$EXX $CM+; |
-$GL $CM+; |
-$HL $CM+; |
-$HY $CM+; |
-$H2 $CM+; |
-$H3 $CM+; |
-$ID $CM+; |
-$IN $CM+; |
-$IS $CM+; |
-$JL $CM+; |
-$JV $CM+; |
-$JT $CM+; |
-$NS $CM+; |
-$NSX $CM+; |
-$NU $CM+; |
-$OP $CM+; |
-$PO $CM+; |
-$POX $CM+; |
-$PR $CM+; |
-$PRX $CM+; |
-$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. |
@@ -224,19 +133,15 @@ $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 $HY $NS $IN $NU $ALPlus]; |
-$AL_FOLLOW = [$AL_FOLLOW_NOCM $AL_FOLLOW_CM]; |
+$AL_FOLLOW = [$BK $CR $LF $NL $ZW $SP $CL $CP $EX $HL $IS $SY $WJ $GL $OP $QU $BA $HY $NS $IN $NU $PR $PO $POX $ALPlus]; |
# |
# Rule LB 4, 5 Mandatory (Hard) breaks. |
# |
$LB4Breaks = [$BK $CR $LF $NL]; |
-$LB4NonBreaks = [^$BK $CR $LF $NL]; |
+$LB4NonBreaks = [^$BK $CR $LF $NL $CM]; |
$CR $LF {100}; |
# |
@@ -244,13 +149,13 @@ $CR $LF {100}; |
# |
$LB4NonBreaks? $LB4Breaks {100}; # LB 5 do not break before hard breaks. |
$CAN_CM $CM* $LB4Breaks {100}; |
-$CM+ $LB4Breaks {100}; |
+^$CM+ $LB4Breaks {100}; |
# LB 7 x SP |
# x ZW |
$LB4NonBreaks [$SP $ZW]; |
$CAN_CM $CM* [$SP $ZW]; |
-$CM+ [$SP $ZW]; |
+^$CM+ [$SP $ZW]; |
# |
# LB 8 Break after zero width space |
@@ -261,38 +166,38 @@ $CM+ [$SP $ZW]; |
$LB8Breaks = [$LB4Breaks $ZW]; |
$LB8NonBreaks = [[$LB4NonBreaks] - [$ZW]]; |
+# LB 8a ZWJ x (ID | Extended_Pict | EmojiNRK) Emoji ZWJ sequences. |
+# |
+$ZWJ ($ID | $Extended_Pict | $EmojiNRK); |
-# 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 |
+# 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+; |
+^$CM+; |
# |
# LB 11 Do not break before or after WORD JOINER & related characters. |
# |
-$CAN_CM $CM* $WJcm; |
-$LB8NonBreaks $WJcm; |
-$CM+ $WJcm; |
+$CAN_CM $CM* $WJ; |
+$LB8NonBreaks $WJ; |
+^$CM+ $WJ; |
-$WJcm $CANT_CM; |
-$WJcm $CAN_CM $CM*; |
+$WJ $CM* .; |
# |
# LB 12 Do not break after NBSP and related characters. |
# GL x |
# |
-$GLcm $CAN_CM $CM*; |
-$GLcm $CANT_CM; |
- |
+$GL $CM* .; |
+ |
# |
# LB 12a Do not break before NBSP and related characters ... |
# [^SP BA HY] x GL |
# |
-[[$LB8NonBreaks] - [$SP $BA $BAX $HY]] $CM* $GLcm; |
-$CM+ GLcm; |
- |
+[[$LB8NonBreaks] - [$SP $BA $BAX $HY]] $CM* $GL; |
+^$CM+ $GL; |
# |
@@ -301,43 +206,43 @@ $CM+ GLcm; |
# Do not include $EXX here |
$LB8NonBreaks $CL; |
$CAN_CM $CM* $CL; |
-$CM+ $CL; # by rule 10, stand-alone CM behaves as AL |
+^$CM+ $CL; # by rule 10, stand-alone CM behaves as AL |
$LB8NonBreaks $CP; |
$CAN_CM $CM* $CP; |
-$CM+ $CP; # by rule 10, stand-alone CM behaves as AL |
+^$CM+ $CP; # by rule 10, stand-alone CM behaves as AL |
$LB8NonBreaks $EX; |
$CAN_CM $CM* $EX; |
-$CM+ $EX; # by rule 10, stand-alone CM behaves as AL |
+^$CM+ $EX; # by rule 10, stand-alone CM behaves as AL |
$LB8NonBreaks $IS; |
$CAN_CM $CM* $IS; |
-$CM+ $IS; # by rule 10, stand-alone CM behaves as AL |
+^$CM+ $IS; # by rule 10, stand-alone CM behaves as AL |
$LB8NonBreaks $SY; |
$CAN_CM $CM* $SY; |
-$CM+ $SY; # by rule 10, stand-alone CM behaves as AL |
+^$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* $CANT_CM; |
+$OP $CM* $SP* .; |
-$OPcm $SP+ $CM+ $AL_FOLLOW?; # by rule 10, stand-alone CM behaves as AL |
+$OP $CM* $SP+ $CM+ $AL_FOLLOW?; # by rule 10, stand-alone CM behaves as AL |
+ # by rule 8, CM following a SP is stand-alone. |
# LB 15 |
-$QUcm $SP* $OPcm; |
+$QU $CM* $SP* $OP; |
# LB 16 |
# Do not break between closing punctuation and $NS, even with intervening spaces |
# But DO allow a break between closing punctuation and $NSX, don't include it here |
-($CLcm | $CPcm) $SP* $NScm; |
+($CL | $CP) $CM* $SP* $NS; |
# LB 17 |
-$B2cm $SP* $B2cm; |
+$B2 $CM* $SP* $B2; |
# |
# LB 18 Break after spaces. |
@@ -348,13 +253,11 @@ $LB18Breaks = [$LB8Breaks $SP]; |
# LB 19 |
# x QU |
-$LB18NonBreaks $CM* $QUcm; |
-$CM+ $QUcm; |
+$LB18NonBreaks $CM* $QU; |
+^$CM+ $QU; |
# QU x |
-$QUcm .?; |
-$QUcm $LB18NonBreaks $CM*; # Don't let a combining mark go onto $CR, $BK, etc. |
- # TODO: I don't think this rule is needed. |
+$QU $CM* .; |
# LB 20 |
@@ -366,81 +269,96 @@ $LB20NonBreaks = [$LB18NonBreaks - $CB]; |
# LB 21 x (BA | HY | NS) |
# BB x |
# |
-# DO allow breaks here before $BAXcm and $NSXcm, so don't include them |
-$LB20NonBreaks $CM* ($BAcm | $HYcm | $NScm); |
+# DO allow breaks here before $BAX and $NSX, so don't include them |
+$LB20NonBreaks $CM* ($BA | $HY | $NS); |
+^$CM+ ($BA | $HY | $NS); |
-$BBcm [^$CB]; # $BB x |
-$BBcm $LB20NonBreaks $CM*; |
+$BB $CM* [^$CB]; # $BB x |
+$BB $CM* $LB20NonBreaks; |
# LB 21a Don't break after Hebrew + Hyphen |
# HL (HY | BA) x |
-# |
-$HLcm ($HYcm | $BAcm | $BAXcm) [^$CB]?; |
+# |
+$HL $CM* ($HY | $BA | $BAX) $CM* [^$CB]?; |
# LB 21b (forward) Don't break between SY and HL |
# (break between HL and SY already disallowed by LB 13 above) |
-$SYcm $HLcm; |
+$SY $CM* $HL; |
# LB 22 |
-($ALcm | $HLcm) $INcm; |
-$CM+ $INcm; # by rule 10, any otherwise unattached CM behaves as AL |
-$EXcm $INcm; |
-$IDcm $INcm; |
-# $INcm $INcm; # delete this rule for CSS loose |
-$NUcm $INcm; |
+($ALPlus | $HL) $CM* $IN; |
+^$CM+ $IN; # by rule 10, any otherwise unattached CM behaves as AL |
+$EX $CM* $IN; |
+($ID | $EB | $EM) $CM* $IN; |
+# $IN $CM* $IN; # delete this rule for CSS loose |
+$NU $CM* $IN; |
-# LB 23 |
+# $LB 23 |
+# |
+($ALPlus | $HL) $CM* $NU; |
+^$CM+ $NU; # Rule 10, any otherwise unattached CM behaves as AL |
+$NU $CM* ($ALPlus | $HL); |
+ |
+# LB 23a |
# Do not include $POX here |
-$IDcm $POcm; |
-$ALcm $NUcm; # includes $LB19 |
-$HLcm $NUcm; |
-$CM+ $NUcm; # Rule 10, any otherwise unattached CM behaves as AL |
-$NUcm $ALcm; |
-$NUcm $HLcm; |
+# |
+$PR $CM* ($ID | $EB | $EM); |
+($ID | $EB | $EM) $CM* $PO; |
+ |
# |
# LB 24 |
# |
# Do not include $PRX here |
-$PRcm $IDcm; |
-$PRcm ($ALcm | $HLcm); |
-($POcm | $POXcm) ($ALcm | $HLcm); |
+($PR | $PO | $POX) $CM* ($ALPlus | $HL); |
+($ALPlus | $HL) $CM* ($PR | $PO | $POX); # TODO: should this be ($PR | $PRX | $PO) |
+^$CM+ ($PR | $PO | $POX); # Rule 10, any otherwise unattached CM behaves as AL |
# |
# LB 25 Numbers. |
# |
# Here do not include $PRX at the beginning or $POX at the end |
-($PRcm | $POcm | $POXcm)? ($OPcm | $HYcm)? $NUcm ($NUcm | $SYcm | $IScm)* ($CLcm | $CPcm)? ($PRcm | $PRXcm | $POcm)?; |
+(($PR | $PO | $POX) $CM*)? (($OP | $HY) $CM*)? $NU ($CM* ($NU | $SY | $IS))* |
+ ($CM* ($CL | $CP))? ($CM* ($PR | $PRX | $PO))?; |
# LB 26 Do not break a Korean syllable |
# |
-$JLcm ($JLcm | $JVcm | $H2cm | $H3cm); |
-($JVcm | $H2cm) ($JVcm | $JTcm); |
-($JTcm | $H3cm) $JTcm; |
+$JL $CM* ($JL | $JV | $H2 | $H3); |
+($JV | $H2) $CM* ($JV | $JT); |
+($JT | $H3) $CM* $JT; |
# LB 27 Treat korean Syllable Block the same as ID (don't break it) |
# Do not include $POX or $PRX here |
-($JLcm | $JVcm | $JTcm | $H2cm | $H3cm) $INcm; |
-($JLcm | $JVcm | $JTcm | $H2cm | $H3cm) $POcm; |
-$PRcm ($JLcm | $JVcm | $JTcm | $H2cm | $H3cm); |
+($JL | $JV | $JT | $H2 | $H3) $CM* $IN; |
+($JL | $JV | $JT | $H2 | $H3) $CM* $PO; |
+$PR $CM* ($JL | $JV | $JT | $H2 | $H3); |
# LB 28 Do not break between alphabetics |
# |
-($ALcm | $HLcm) ($ALcm | $HLcm); |
-$CM+ ($ALcm | $HLcm); # The $CM+ is from rule 10, an unattached CM is treated as AL |
+($ALPlus | $HL) $CM* ($ALPlus | $HL); |
+^$CM+ ($ALPlus | $HL); # The $CM+ is from rule 10, an unattached CM is treated as AL |
# LB 29 |
-$IScm ($ALcm | $HLcm); |
+$IS $CM* ($ALPlus | $HL); |
# LB 30 |
-($ALcm | $HLcm | $NUcm) $OPcm; |
-$CM+ $OPcm; # The $CM+ is from rule 10, an unattached CM is treated as AL. |
-$CPcm ($ALcm | $HLcm | $NUcm); |
+($ALPlus | $HL | $NU) $CM* $OP; |
+^$CM+ $OP; # The $CM+ is from rule 10, an unattached CM is treated as AL. |
+$CP $CM* ($ALPlus | $HL | $NU); |
+ |
+# LB 30a Do not break between regional indicators. Break after pairs of them. |
+# Tricky interaction with LB8a: ZWJ x ID |
+$RI $CM* $RI / [[^$BK $CR $LF $NL $SP $ZW $WJ $CL $CP $EX $IS $SY $GL $QU $BA $HY $NS $CM] {eof}]; |
+$RI $CM* $RI $CM* $ZWJ / [[^$BK $CR $LF $NL $SP $ZW $WJ $CL $CP $EX $IS $SY $GL $QU $BA $HY $NS $CM $ID $Extended_Pict $EmojiNRK] {eof}]; |
+$RI $CM* $RI $CM* [$CM-$ZWJ] / [[^$BK $CR $LF $NL $SP $ZW $WJ $CL $CP $EX $IS $SY $GL $QU $BA $HY $NS $CM] {eof}]; |
+ |
+$RI $CM* $RI $CM* [$BK $CR $LF $NL $SP $ZW $WJ $CL $CP $EX $IS $SY $GL $QU $BA $HY $NS {eof}]; |
+$RI $CM* $RI $CM* $ZWJ ($ID | $Extended_Pict | $EmojiNRK); |
-# LB 30a Do not break between regional indicators. |
-$RIcm $RIcm; |
+# LB 30b Do not break between an Emoji Base and an Emoji Modifier |
+$EB $CM* $EM; |
# |
# Reverse Rules. |
@@ -449,40 +367,10 @@ $RIcm $RIcm; |
!!reverse; |
-$CM+ $ALPlus; |
-$CM+ $BA; |
-$CM+ $BAX; |
-$CM+ $BB; |
-$CM+ $B2; |
-$CM+ $CL; |
-$CM+ $CP; |
-$CM+ $EX; |
-$CM+ $EXX; |
-$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+ $NSX; |
-$CM+ $NU; |
-$CM+ $OP; |
-$CM+ $PO; |
-$CM+ $POX; |
-$CM+ $PR; |
-$CM+ $PRX; |
-$CM+ $QU; |
-$CM+ $RI; |
-$CM+ $SY; |
-$CM+ $WJ; |
-$CM+; |
+# LB 9 Combining Marks. |
+# Stick together any combining sequences that don't match other rules. |
+^$CM+ $CAN_CM?; |
# |
# Sequences of the form (shown forwards) |
@@ -493,26 +381,16 @@ $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 . |
+ # 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 $PRX ] / $CM+ [$BK $CR $LF $NL $ZW $SP {eof}]; |
- |
-# LB 4, 5, 5 |
+# LB 4, 5, 6 |
$LB4Breaks [$LB4NonBreaks-$CM]; |
$LB4Breaks $CM+ $CAN_CM; |
@@ -529,30 +407,36 @@ $LF $CR; |
# Requires an engine enhancement. |
# / $SP* $ZW |
+# LB 8a ZWJ x (ID | Extended_Pict | EmojiNRK) |
+# |
+($ID | $Extended_Pict | $EmojiNRK) $ZWJ $CM* $CAN_CM?; |
+ |
+ |
# 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+ $CAN_CM; |
+^$CM+ $CAN_CM; |
# LB 11 |
-$CM* $WJ $CM* $CAN_CM; |
-$CM* $WJ [$LB8NonBreaks-$CM]; |
+# |
+$WJ $CM* $CAN_CM; |
+$WJ [$LB8NonBreaks-$CM]; |
$CANT_CM $CM* $WJ; |
-$CM* $CAN_CM $CM* $WJ; |
+$CAN_CM $CM* $WJ; |
# LB 12a |
# [^SP BA HY] x GL |
# |
-$CM* $GL $CM* [$LB8NonBreaks-[$CM $SP $BA $BAX $HY]]; |
+$GL $CM* [$LB8NonBreaks-[$CM $SP $BA $BAX $HY]]; |
# LB 12 |
# GL x |
# |
$CANT_CM $CM* $GL; |
-$CM* $CAN_CM $CM* $GL; |
+$CAN_CM $CM* $GL; |
# LB 13 |
@@ -569,34 +453,22 @@ $EX [$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. |
- |
+. $SP* $CM* $OP; |
+$AL_FOLLOW? $CM+ $SP+ $CM* $OP; # by LB 10, behaves like $AL_FOLLOW? $AL $SP+ $CM* $OP |
# LB 15 |
-$CM* $OP $SP* $CM* $QU; |
+$OP $SP* $CM* $QU; |
# LB 16 |
# Don't include $NSX here |
-$CM* $NS $SP* $CM* ($CL | $CP); |
+$NS $SP* $CM* ($CL | $CP); |
# LB 17 |
-$CM* $B2 $SP* $CM* $B2; |
+$B2 $SP* $CM* $B2; |
# LB 18 break after spaces |
# Nothing explicit needed here. |
@@ -605,13 +477,13 @@ $CM* $B2 $SP* $CM* $B2; |
# |
# LB 19 |
# |
-$CM* $QU $CM* $CAN_CM; # . x QU |
-$CM* $QU $LB18NonBreaks; |
+$QU $CM* $CAN_CM; # . x QU |
+$QU $LB18NonBreaks; |
-$CM* $CAN_CM $CM* $QU; # QU x . |
+$CAN_CM $CM* $QU; # QU x . |
$CANT_CM $CM* $QU; |
- |
+ |
# |
# LB 20 Break before and after CB. |
# nothing needed here. |
@@ -619,35 +491,38 @@ $CM* $CAN_CM $CM* $QU; # QU x . |
# LB 21 |
# Don't include $BAX or $NSX here |
-$CM* ($BA | $HY | $NS) $CM* [$LB20NonBreaks-$CM]; # . x (BA | HY | NS) |
+($BA | $HY | $NS) $CM* [$LB20NonBreaks-$CM]; # . x (BA | HY | NS) |
-$CM* [$LB20NonBreaks-$CM] $CM* $BB; # BB x . |
-[^$CB] $CM* $BB; # |
+[$LB20NonBreaks-$CM] $CM* $BB; # BB x . |
+[^$CB] $CM* $BB; # |
# LB21a |
-[^$CB]? $CM* ($HY | $BA | $BAX) $CM* $HL; |
+[^$CM $CB]? $CM* ($HY | $BA | $BAX) $CM* $HL; |
# LB21b (reverse) |
-$CM* $HL $CM* $SY; |
+$HL $CM* $SY; |
# LB 22 |
-$CM* $IN $CM* ($ALPlus | $HL); |
-$CM* $IN $CM* $EX; |
-$CM* $IN $CM* $ID; |
-# $CM* $IN $CM* $IN; # delete this rule for CSS loose |
-$CM* $IN $CM* $NU; |
+$IN $CM* ($ALPlus | $HL); |
+$IN $CM* $EX; |
+$IN $CM* ($ID | $EB | $EM); |
+# $IN $CM* $IN; # delete this rule for CSS loose |
+$IN $CM* $NU; |
# LB 23 |
# Do not include $POX here |
-$CM* $PO $CM* $ID; |
-$CM* $NU $CM* ($ALPlus | $HL); |
-$CM* ($ALPlus | $HL) $CM* $NU; |
+$NU $CM* ($ALPlus | $HL); |
+($ALPlus | $HL) $CM* $NU; |
+ |
+# LB23a |
+# Do not include $PRX here |
+($ID | $EB | $EM) $CM* $PR; |
+$PO $CM* ($ID | $EB | $EM); |
# LB 24 |
# Do not include $PRX here |
-$CM* $ID $CM* $PR; |
-$CM* ($ALPlus | $HL) $CM* $PR; |
-$CM* ($ALPlus | $HL) $CM* ($PO | $POX); |
+($ALPlus | $HL) $CM* ($PR | $PO | $POX); |
+($PR | $PO | $POX) $CM* ($ALPlus | $HL); |
# LB 25 |
@@ -655,37 +530,56 @@ $CM* ($ALPlus | $HL) $CM* ($PO | $POX); |
($CM* ($PR | $PRX | $PO))? ($CM* ($CL | $CP))? ($CM* ($NU | $IS | $SY))* $CM* $NU ($CM* ($OP | $HY))? ($CM* ($PR | $PO | $POX))?; |
# LB 26 |
-$CM* ($H3 | $H2 | $JV | $JL) $CM* $JL; |
-$CM* ($JT | $JV) $CM* ($H2 | $JV); |
-$CM* $JT $CM* ($H3 | $JT); |
+($H3 | $H2 | $JV | $JL) $CM* $JL; |
+($JT | $JV) $CM* ($H2 | $JV); |
+$JT $CM* ($H3 | $JT); |
# LB 27 |
# Do not include $POX or $PRX here |
-$CM* $IN $CM* ($H3 | $H2 | $JT | $JV | $JL); |
-$CM* $PO $CM* ($H3 | $H2 | $JT | $JV | $JL); |
-$CM* ($H3 | $H2 | $JT | $JV | $JL) $CM* $PR; |
+$IN $CM* ($H3 | $H2 | $JT | $JV | $JL); |
+$PO $CM* ($H3 | $H2 | $JT | $JV | $JL); |
+ ($H3 | $H2 | $JT | $JV | $JL) $CM* $PR; |
# LB 28 |
-$CM* ($ALPlus | $HL) $CM* ($ALPlus | $HL); |
+($ALPlus | $HL) $CM* ($ALPlus | $HL); |
# LB 29 |
-$CM* ($ALPlus | $HL) $CM* $IS; |
+($ALPlus | $HL) $CM* $IS; |
# LB 30 |
-$CM* $OP $CM* ($ALPlus | $HL | $NU); |
-$CM* ($ALPlus | $HL | $NU) $CM* $CP; |
+$OP $CM* ($ALPlus | $HL | $NU); |
+($ALPlus | $HL | $NU) $CM* $CP; |
# LB 30a |
-$CM* $RI $CM* $RI; |
+# Pairs of Regional Indicators. |
+# The following two rules are nearly identical. The first matches only sequences with an odd number of adjacent RIs, |
+# the second with an even number. Stripping away the cruft they look like |
+# [^RI] RI / (RI RI)+ ^RI; |
+# [^RI] RI RI / (RI RI)+ ^RI; |
+# |
+# Line Loose tailoring: Don't include NSX here. |
+[{bof} $NS $HY $BA $QU $CL $CP $EX $IS $SY $WJ $GL $ZW $SP $BK $CR $LF $NL $ZWJ] $CM* $RI / ($CM* $RI $CM* $RI)+ $CM* [{eof}[^$RI $CM]]; |
+[{bof} $NS $HY $BA $QU $CL $CP $EX $IS $SY $WJ $GL $ZW $SP $BK $CR $LF $NL $ZWJ] $CM* $RI $CM* $RI / ($CM* $RI $CM* $RI)+ $CM* [{eof}[^$RI $CM]]; |
+ |
+# In general, adjacent RIs stay together. The hard-break rules, above, overide this, forcing in the boundaries between pairs. |
+$RI $CM* $RI; |
+ |
+# WJ, GL, QU, etc. are classes with rules like "WJ x " which includes "WJ x RI". |
+$RI $CM* ([$WJ $GL $QU $BB] | (($HY | $BA)$CM* $HL)); |
+ |
+ |
+# LB 30b Do not break between an Emoji Base and an Emoji Modifier |
+$EM $CM* $EB; |
+ |
## ------------------------------------------------- |
!!safe_reverse; |
# LB 9 |
-$CM+ [^$CM $BK $CR $LF $NL $ZW $SP]; |
-$CM+ $SP / .; |
+^$CM+ [^$CM $BK $CR $LF $NL $ZW $SP]; |
+^$CM+ $SP / .; |
# LB 14 |
$SP+ $CM* $OP; |
@@ -706,6 +600,9 @@ $CM* ($HY | $BA | $BAX) $CM* $HL; |
($CM* ($IS | $SY))+ $CM* $NU; |
($CL | $CP) $CM* ($NU | $IS | $SY); |
+# LB 30 |
+($CM* $RI)+; |
+ |
# For dictionary-based break |
$dictionary $dictionary; |
@@ -722,6 +619,6 @@ $dictionary $dictionary; |
# turn off rule chaining. We don't want to move more |
# than necessary. |
# |
-[$CM $OP $QU $CL $CP $B2 $PR $PRX $HY $BA $BAX $SP $dictionary]+ [^$CM $OP $QU $CL $CP $B2 $PR $PRX $HY $BA $BAX $dictionary]; |
+^[$CM $OP $QU $CL $CP $B2 $PR $PRX $HY $BA $BAX $SP $RI $ZWJ $dictionary]+ [^$CM $OP $QU $CL $CP $B2 $PR $PRX $HY $BA $BAX $RI $ZWJ $dictionary]; |
$dictionary $dictionary; |