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line_loose_cj.txt (15943B)


      1 # Copyright (C) 2016 and later: Unicode, Inc. and others.
      2 # License & terms of use: http://www.unicode.org/copyright.html
      3 # Copyright (c) 2002-2016  International Business Machines Corporation and
      4 # others. All Rights Reserved.
      5 #
      6 #  file:  line_loose_cj.txt
      7 #
      8 #         Line Breaking Rules
      9 #         Implement default line breaking as defined by
     10 #         Unicode Standard Annex #14 (https://www.unicode.org/reports/tr14/)
     11 #         for Unicode 14.0, with the following modification:
     12 #
     13 #         Boundaries between hyphens and following letters are suppressed when
     14 #         there is a boundary preceding the hyphen. See rule 20.9
     15 #
     16 #         This tailors the line break behavior to correspond to CSS
     17 #         line-break=loose (BCP47 -u-lb-loose) as defined for Chinese & Japanese.
     18 #         It sets characters of class CJ to behave like ID.
     19 #         In addition, it allows breaks:
     20 #         * between ID and hyphens 2010 & 2013 (as well as the rest of the HH class)
     21 #         * before 301C, 30A0 (both NS)
     22 #         * before iteration marks 3005, 303B, 309D, 309E, 30FD, 30FE (all NS)
     23 #         * between characters of LineBreak class IN such as 2026
     24 #         * before some centered punct 203C, 2047, 2048, 2049, 30FB, FF1A, FF1B,
     25 #           FF65 (all NS) and FF01, FF1F (both EX).
     26 #         * before suffix characters with LineBreak class PO and EastAsianWidth A,F,W;
     27 #           this includes: 00B0 2030 2032 2033 2035 2103 2109 FE6A FF05 FFE0
     28 #         * after prefix characters with LineBreak class PR and EastAsianWidth A,F,W;
     29 #           this includes: 00A4 00B1 20AC 2116 FE69 FF04 FFE1 FFE5 FFE6
     30 #         It allows breaking before 201C and after 201D, for zh_Hans, zh_Hant, and ja.
     31 
     32 
     33 #
     34 #  Character Classes defined by TR 14.
     35 #
     36 
     37 !!chain;
     38 !!quoted_literals_only;
     39 
     40 $AI = [:LineBreak =  Ambiguous:];
     41 $AK = [:LineBreak =  Aksara:];
     42 $AL = [:LineBreak =  Alphabetic:];
     43 $AP = [:LineBreak =  Aksara_Prebase:];
     44 $AS = [:LineBreak =  Aksara_Start:];
     45 $BA = [:LineBreak =  Break_After:];
     46 $HH = [:LineBreak =  Unambiguous_Hyphen:];
     47 $BB = [:LineBreak =  Break_Before:];
     48 $BK = [:LineBreak =  Mandatory_Break:];
     49 $B2 = [:LineBreak =  Break_Both:];
     50 $CB = [:LineBreak =  Contingent_Break:];
     51 $CJ = [:LineBreak =  Conditional_Japanese_Starter:];
     52 $CL = [[:LineBreak =  Close_Punctuation:] \u201d];
     53 # $CM = [:LineBreak =  Combining_Mark:];
     54 $CP = [:LineBreak =  Close_Parenthesis:];
     55 $CR = [:LineBreak =  Carriage_Return:];
     56 $EB = [:LineBreak =  EB:];
     57 $EM = [:LineBreak =  EM:];
     58 $EXX = [\uFF01 \uFF1F];
     59 $EX = [[:LineBreak =  Exclamation:] - $EXX];
     60 $GL = [:LineBreak =  Glue:];
     61 $HL = [:LineBreak =  Hebrew_Letter:];
     62 $HY = [:LineBreak =  Hyphen:];
     63 $H2 = [:LineBreak =  H2:];
     64 $H3 = [:LineBreak =  H3:];
     65 # CSS Loose tailoring: CJ resolves to ID
     66 $ID = [[:LineBreak =  Ideographic:] $CJ];
     67 $IN = [:LineBreak =  Inseperable:];
     68 $IS = [:LineBreak =  Infix_Numeric:];
     69 $JL = [:LineBreak =  JL:];
     70 $JV = [:LineBreak =  JV:];
     71 $JT = [:LineBreak =  JT:];
     72 $LF = [:LineBreak =  Line_Feed:];
     73 $NL = [:LineBreak =  Next_Line:];
     74 $NSX = [\u301C \u30A0 \u3005 \u303B \u309D \u309E \u30FD \u30FE \u203C \u2047 \u2048 \u2049 \u30FB \uFF1A \uFF1B \uFF65];
     75 $NS = [[:LineBreak =  Nonstarter:] - $NSX];
     76 $NU = [:LineBreak =  Numeric:];
     77 $OP = [[:LineBreak =  Open_Punctuation:] \u201c];
     78 $POX = [\u00B0 \u2030 \u2032 \u2033 \u2035 \u2103 \u2109 \uFE6A \uFF05 \uFFE0];
     79 $PO = [[:LineBreak =  Postfix_Numeric:] - $POX];
     80 $PRX = [\u00A4 \u00B1 \u20AC \u2116 \uFE69 \uFF04 \uFFE1 \uFFE5 \uFFE6];
     81 $PR = [[:LineBreak =  Prefix_Numeric:] - $PRX];
     82 $QU = [[:LineBreak =  Quotation:] - [\u201c\u201d]];
     83 $RI = [:LineBreak =  Regional_Indicator:];
     84 $SA = [:LineBreak =  Complex_Context:];
     85 $SG = [:LineBreak =  Surrogate:];
     86 $SP = [:LineBreak =  Space:];
     87 $SY = [:LineBreak =  Break_Symbols:];
     88 $VF = [:LineBreak =  Virama_Final:];
     89 $VI = [:LineBreak =  Virama:];
     90 $WJ = [:LineBreak =  Word_Joiner:];
     91 $XX = [:LineBreak =  Unknown:];
     92 $ZW = [:LineBreak =  ZWSpace:];
     93 $ZWJ = [:LineBreak = ZWJ:];
     94 
     95 $EastAsian = [\p{ea=F}\p{ea=W}\p{ea=H}];
     96 
     97 $ExtPictUnassigned = [\p{Extended_Pictographic} & \p{Cn}];
     98 
     99 # By LB9, a ZWJ also behaves as a CM. Including it in the definition of CM avoids having to explicitly
    100 #         list it in the numerous rules that use CM.
    101 # By LB1, SA characters with general categor of Mn or Mc also resolve to CM.
    102 
    103 $CM = [[:LineBreak = Combining_Mark:] $ZWJ [$SA & [[:Mn:][:Mc:]]]];
    104 $CMX = [[$CM] - [$ZWJ]];
    105 
    106 #   Dictionary character set, for triggering language-based break engines. Currently
    107 #   limited to LineBreak=Complex_Context (SA).
    108 
    109 $dictionary = [$SA];
    110 
    111 #
    112 #  Rule LB1.  By default, treat AI  (characters with ambiguous east Asian width),
    113 #                               SA  (Dictionary chars, excluding Mn and Mc)
    114 #                               SG  (Unpaired Surrogates)
    115 #                               XX  (Unknown, unassigned)
    116 #                         as $AL  (Alphabetic)
    117 #
    118 $ALPlus = [$AL $AI $SG $XX [$SA-[[:Mn:][:Mc:]]]];
    119 
    120 
    121 ## -------------------------------------------------
    122 
    123 #
    124 # CAN_CM  is the set of characters that may combine with CM combining chars.
    125 #         Note that Linebreak UAX 14's concept of a combining char and the rules
    126 #         for what they can combine with are _very_ different from the rest of Unicode.
    127 #
    128 #         Note that $CM itself is left out of this set.  If CM is needed as a base
    129 #         it must be listed separately in the rule.
    130 #
    131 $CAN_CM  = [^$SP $BK $CR $LF $NL $ZW $CM];       # Bases that can   take CMs
    132 $CANT_CM = [ $SP $BK $CR $LF $NL $ZW $CM];       # Bases that can't take CMs
    133 
    134 #
    135 # AL_FOLLOW  set of chars that can unconditionally follow an AL
    136 #            Needed in rules where stand-alone $CM s are treated as AL.
    137 #
    138 $AL_FOLLOW      = [$BK $CR $LF $NL $ZW $SP $CL $CP $EX $HL $IS $SY $WJ $GL [$OP - $EastAsian] $QU $BA $HH $HY $NS $IN $NU $PR $PO $POX $ALPlus];
    139 
    140 
    141 #
    142 #  Rule LB 4, 5    Mandatory (Hard) breaks.
    143 #
    144 $LB4Breaks    = [$BK $CR $LF $NL];
    145 $LB4NonBreaks = [^$BK $CR $LF $NL $CM];
    146 $CR $LF {100};
    147 
    148 #
    149 #  LB 6    Do not break before hard line breaks.
    150 #
    151 $LB4NonBreaks?  $LB4Breaks {100};    # LB 5  do not break before hard breaks.
    152 $CAN_CM $CM*    $LB4Breaks {100};
    153 ^$CM+           $LB4Breaks {100};
    154 
    155 # LB 7         x SP
    156 #              x ZW
    157 $LB4NonBreaks [$SP $ZW];
    158 $CAN_CM $CM*  [$SP $ZW];
    159 ^$CM+         [$SP $ZW];
    160 
    161 #
    162 # LB 8         Break after zero width space
    163 #              ZW SP* ÷
    164 #
    165 $LB8Breaks    = [$LB4Breaks $ZW];
    166 $LB8NonBreaks = [[$LB4NonBreaks] - [$ZW]];
    167 $ZW $SP* / [^$SP $ZW $LB4Breaks];
    168 
    169 # LB 8a        ZWJ x            Do not break Emoji ZWJ sequences.
    170 #
    171 $ZWJ [^$CM];
    172 
    173 # LB 9     Combining marks.      X   $CM needs to behave like X, where X is not $SP, $BK $CR $LF $NL
    174 #                                $CM not covered by the above needs to behave like $AL
    175 #                                See definition of $CAN_CM.
    176 
    177 $CAN_CM $CM+;                   #  Stick together any combining sequences that don't match other rules.
    178 ^$CM+;
    179 
    180 #
    181 # LB 11  Do not break before or after WORD JOINER & related characters.
    182 #
    183 $CAN_CM $CM*  $WJ;
    184 $LB8NonBreaks $WJ;
    185 ^$CM+         $WJ;
    186 
    187 $WJ $CM* .;
    188 
    189 #
    190 # LB 12  Do not break after NBSP and related characters.
    191 #         GL  x
    192 #
    193 $GL $CM* .;
    194 
    195 #
    196 # LB 12a  Do not break before NBSP and related characters ...
    197 #            [^SP BA HY HH] x GL
    198 #
    199 [[$LB8NonBreaks] - [$SP $BA $HY $HH]] $CM* $GL;
    200 ^$CM+ $GL;
    201 
    202 
    203 
    204 # LB 13   Don't break before ']' or '!' or '/', even after spaces.
    205 #
    206 # Do not include $EXX here
    207 $LB8NonBreaks $CL;
    208 $CAN_CM $CM*  $CL;
    209 ^$CM+         $CL;              # by rule 10, stand-alone CM behaves as AL
    210 
    211 $LB8NonBreaks $CP;
    212 $CAN_CM $CM*  $CP;
    213 ^$CM+         $CP;              # by rule 10, stand-alone CM behaves as AL
    214 
    215 $LB8NonBreaks $EX;
    216 $CAN_CM $CM*  $EX;
    217 ^$CM+         $EX;              # by rule 10, stand-alone CM behaves as AL
    218 
    219 $LB8NonBreaks $SY;
    220 $CAN_CM $CM*  $SY;
    221 ^$CM+         $SY;              # by rule 10, stand-alone CM behaves as AL
    222 
    223 
    224 #
    225 # LB 14  Do not break after OP, even after spaces
    226 #        Note subtle interaction with "SP IS /" rules in LB14a.
    227 #        This rule consumes the SP, chaining happens on the IS, effectivley overriding the  SP IS rules,
    228 #        which is the desired behavior.
    229 #
    230 $OP $CM* $SP* .;
    231 
    232 $OP $CM* $SP+ $CM+ $AL_FOLLOW?;    # by rule 10, stand-alone CM behaves as AL
    233                                   # by rule 8, CM following a SP is stand-alone.
    234 
    235 
    236 # LB 15a
    237 ($OP $CM* $SP+ | [$OP $QU $GL] $CM*) ([\p{Pi} & $QU] $CM* $SP*)+ .;
    238 ($OP $CM* $SP+ | [$OP $QU $GL] $CM*) ([\p{Pi} & $QU] $CM* $SP*)+ $SP $CM+ $AL_FOLLOW?;
    239 ^([\p{Pi} & $QU] $CM* $SP*)+ .;
    240 ^([\p{Pi} & $QU] $CM* $SP*)+ $SP $CM+ $AL_FOLLOW?;
    241 
    242 # LB 15b
    243 $LB8NonBreaks [\p{Pf} & $QU] $CM* [$SP $GL $WJ $CL $QU $CP $EX $IS $SY $BK $CR $LF $NL $ZW {eof}];
    244 $CAN_CM $CM*  [\p{Pf} & $QU] $CM* [$SP $GL $WJ $CL $QU $CP $EX $IS $SY $BK $CR $LF $NL $ZW {eof}];
    245 ^$CM+  [\p{Pf} & $QU] $CM* [$SP $GL $WJ $CL $QU $CP $EX $IS $SY $BK $CR $LF $NL $ZW {eof}];
    246 
    247 # Messy interaction: manually chain between LB 15b and LB 15a on Pf Pi.
    248 $LB8NonBreaks [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ .;
    249 $LB8NonBreaks [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ $SP $CM+ $AL_FOLLOW?;
    250 $CAN_CM $CM*  [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ .;
    251 $CAN_CM $CM*  [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ $SP $CM+ $AL_FOLLOW?;
    252 ^$CM+  [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ .;
    253 ^$CM+  [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ $SP $CM+ $AL_FOLLOW?;
    254 
    255 
    256 # LB 15c Force a break before start of a number with a leading decimal pt, e.g. " .23"
    257 #        Note: would be simpler to express as "$SP / $IS $CM* $NU;", but ICU rules have limitations.
    258 #        See issue ICU-20303
    259 
    260 
    261 $CanFollowIS = [$BK $CR $LF $NL $SP $ZW $WJ $GL $CL $CP $EX $IS $SY $QU $BA $HH $HY $NS $ALPlus $HL $IN];
    262 $SP $IS           / [^ $CanFollowIS $NU $CM];
    263 $SP $IS $CM* $CMX / [^ $CanFollowIS $NU $CM];
    264 
    265 #
    266 # LB 15d Do not break before numeric separators (IS), even after spaces.
    267 # SP IS QU is handled below as part of LB 19.
    268 
    269 [$LB8NonBreaks - $SP] $IS;
    270 $SP $IS $CM* [$CanFollowIS {eof}];
    271 $SP $IS $CM* $ZWJ [^$CM $NU];
    272 
    273 $CAN_CM $CM*  $IS;
    274 ^$CM+         $IS;              # by rule 10, stand-alone CM behaves as AL
    275 
    276 
    277 # LB 16
    278 # Do not break between closing punctuation and $NS, even with intervening spaces
    279 # But DO allow a break between closing punctuation and $NSX, don't include it here
    280 ($CL | $CP) $CM* $SP* $NS;
    281 
    282 # LB 17
    283 $B2 $CM* $SP* $B2;
    284 
    285 #
    286 # LB 18  Break after spaces.
    287 #
    288 $LB18NonBreaks = [$LB8NonBreaks - [$SP]];
    289 $LB18Breaks    = [$LB8Breaks $SP];
    290 
    291 
    292 # LB 19 and LB 19a.
    293 # Instead of implementing both as keep-together rules as in UAX #14, we have an
    294 # East_Asian_Width and General_Category-insensitive keep-together rule
    295 # equivalent to the old LB19 × QU and QU ×, and then we poke holes into it based
    296 # on context.  This avoids having to do manual chaining over multiple characters
    297 # with many other rules over multiple characters, as a keep-together LB19a would
    298 # overlap in context with at least LB14, LB15a, LB15a, LB15d, LB30a, and itself.
    299 $LB18NonBreaks $CM* $QU;
    300 ^$CM+               $QU;
    301 
    302 [$LB18NonBreaks & $EastAsian - [$OP $GL]]           / [\p{Pi} & $QU] $CM* [ $EastAsian - $CM];
    303 [$LB18NonBreaks & $EastAsian - [$OP $GL]] $CM* $CMX / [\p{Pi} & $QU] $CM* [ $EastAsian - $CM];
    304 
    305 $QU $CM* .;
    306 [$LB18NonBreaks & $EastAsian] $CM* [\p{Pf} & $QU]           / [ $EastAsian - [$NS $BA $EX $CL $IN $IS $GL $CM]];
    307 [$LB18NonBreaks & $EastAsian] $CM* [\p{Pf} & $QU] $CM* $CMX / [ $EastAsian - [$NS $BA $EX $CL $IN $IS $GL $CM]];
    308 
    309 # LB 20
    310 #        <break>  $CB
    311 #        $CB   <break>
    312 #
    313 $LB20NonBreaks = [$LB18NonBreaks - $CB];
    314 
    315 # LB 20a      Don't break between Hyphens and Letters when there is a break preceding the hyphen.
    316 #             Originally added as a Finnish tailoring, promoted to default ICU behavior (ICU-8151),
    317 #             and then to default UAX #14 behaviour (UTC-179-C32).
    318 #
    319 ^($HY | $HH) $CM* ($ALPlus | $HL);
    320 $GL $CM* ($HY | $HH) $CM* ($ALPlus | $HL ); 
    321 # Non-breaking CB from LB8a:
    322 $CB $CM* $ZWJ ($HY | $HH) $CM* ($ALPlus | $HL );
    323 # Non-breaking SP from LB14:
    324 $OP $CM* $SP+ ($HY | $HH) $CM* ($ALPlus | $HL ); 
    325 # Non-breaking SP from LB15a:
    326 ($OP $CM* $SP+ | [$OP $QU $GL] $CM*) ([\p{Pi} & $QU] $CM* $SP*)+ $SP ($HY | $HH) $CM* ($ALPlus | $HL );
    327 ^([\p{Pi} & $QU] $CM* $SP*)+ $SP ($HY | $HH) $CM* ($ALPlus | $HL );
    328 # Non-breaking SP from LB15a following LB15b:
    329 $LB8NonBreaks [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ $SP ($HY | $HH) $CM* ($ALPlus | $HL );
    330 $CAN_CM $CM*  [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ $SP ($HY | $HH) $CM* ($ALPlus | $HL );
    331 ^$CM+  [\p{Pf} & $QU] $CM* ([\p{Pi} & $QU] $CM* $SP*)+ $SP ($HY | $HH) $CM* ($ALPlus | $HL );
    332 
    333 # LB 21        x   (BA | HH | HY | NS)
    334 #           BB x
    335 #
    336 # DO allow breaks here before $NSX, so don't include it.
    337 # And DO allow breaks between ID and $HH, so split out the handling of ID and do not include $HH for them.
    338 [$LB20NonBreaks - $ID] $CM* ($BA | $HH | $HY | $NS);
    339 $ID $CM* ($BA | $HY | $NS);
    340 
    341 
    342 ^$CM+ ($BA | $HH | $HY | $NS);
    343 
    344 $BB $CM* [^$CB];                                  #  $BB  x
    345 $BB $CM* $LB20NonBreaks;
    346 
    347 # LB 21a Do not break after the hyphen in Hebrew + Hyphen + non-Hebrew
    348 #   HL (HY | HH) x [^HL]
    349 #
    350 $HL $CM* ($HY | $HH) $CM* [^$CB $HL]?;
    351 
    352 # LB 21b (forward) Don't break between SY and HL
    353 # (break between HL and SY already disallowed by LB 13 above)
    354 $SY $CM* $HL;
    355 
    356 
    357 # LB 22  Do not break before ellipses
    358 #
    359 [$LB20NonBreaks - $IN] $CM*    $IN;    # line_loose tailoring
    360 ^$CM+ $IN;
    361 
    362 
    363 # LB 23
    364 #
    365 ($ALPlus | $HL) $CM* $NU;
    366 ^$CM+  $NU;       # Rule 10, any otherwise unattached CM behaves as AL
    367 $NU $CM* ($ALPlus | $HL);
    368 
    369 # LB 23a
    370 # Do not include $POX here
    371 #
    372 $PR $CM* ($ID | $EB | $EM);
    373 ($ID | $EB | $EM) $CM*  $PO;
    374 
    375 
    376 #
    377 # LB 24
    378 #
    379 # Do not include $PRX here
    380 ($PR | $PO | $POX) $CM* ($ALPlus | $HL);
    381 ($ALPlus | $HL) $CM* ($PR | $PO | $POX);     # TODO: should this be ($PR | $PRX | $PO)
    382 ^$CM+ ($PR | $PO | $POX);       # Rule 10, any otherwise unattached CM behaves as AL
    383 
    384 #
    385 # LB 25   Numbers.
    386 #
    387 # Here do not include $PRX at the beginning or $POX at the end
    388 (($PR | $PO | $POX) $CM*)? (($OP | $HY) $CM*)? ($IS $CM*)? $NU ($CM* ($NU | $SY | $IS))*
    389    ($CM* ($CL | $CP))? ($CM* ($PR | $PRX | $PO))?;
    390 
    391 # LB 26  Do not break a Korean syllable
    392 #
    393 $JL $CM* ($JL | $JV | $H2 | $H3);
    394 ($JV | $H2) $CM* ($JV | $JT);
    395 ($JT | $H3) $CM* $JT;
    396 
    397 # LB 27  Treat korean Syllable Block the same as ID  (don't break it)
    398 # Do not include $POX or $PRX here
    399 ($JL | $JV | $JT | $H2 | $H3) $CM* $PO;
    400 $PR $CM* ($JL | $JV | $JT | $H2 | $H3);
    401 
    402 
    403 # LB 28   Do not break between alphabetics
    404 #
    405 ($ALPlus | $HL) $CM* ($ALPlus | $HL);
    406 ^$CM+ ($ALPlus | $HL);      # The $CM+ is from rule 10, an unattached CM is treated as AL
    407 
    408 #LB 28a  Do not break Orthographic syllables
    409 ($AP $CM*)? ($AS | $AK | [◌] ) ($CM* $VI $CM* ($AK | [◌] ))* ($CM* $VI | (($CM* ($AS | $AK | [◌] ) )? $CM* $VF))?;
    410 
    411 # LB 29
    412 $IS $CM* ($ALPlus | $HL);
    413 
    414 # LB 30
    415 ($ALPlus | $HL | $NU) $CM* [$OP - $EastAsian];
    416 ^$CM+ [$OP - $EastAsian];         # The $CM+ is from rule 10, an unattached CM is treated as AL.
    417 [$CP - $EastAsian] $CM* ($ALPlus | $HL | $NU);
    418 
    419 # LB 30a  Do not break between regional indicators. Break after pairs of them.
    420 #         Tricky interaction with LB8a: ZWJ x .   together with ZWJ acting like a CM.
    421 $RI $CM* $RI                 / [[^$BK $CR $LF $NL $SP $ZW $WJ $CL $CP $EX $IS $SY $GL $QU $BA $HH $HY $NS $IN $CM]];
    422 $RI $CM* $RI $CM* [$CM-$ZWJ] / [[^$BK $CR $LF $NL $SP $ZW $WJ $CL $CP $EX $IS $SY $GL $QU $BA $HH $HY $NS $IN $CM]];
    423 $RI $CM* $RI $CM* [$BK $CR $LF $NL $SP $ZW $WJ $CL $CP $EX $IS $SY $GL $QU $BA $HH $HY $NS $IN $ZWJ {eof}];
    424 # note: the preceding rule includes {eof} rather than having the last [set] term qualified with '?'
    425 #       because of the chain-out behavior difference. The rule must chain out only from the [set characters],
    426 #       not from the preceding $RI or $CM, which it would be able to do if the set were optional.
    427 
    428 # LB30b Do not break between an emoji base (or potential emoji) and an emoji modifier.
    429 $EB $CM* $EM;
    430 $ExtPictUnassigned $CM* $EM;
    431 
    432 # LB 31 Break everywhere else.
    433 #       Match a single code point if no other rule applies.
    434 .;