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| 1 # Copyright (c) 2002-2013 International Business Machines Corporation and | |
| 2 # others. All Rights Reserved. | |
| 3 # | |
| 4 # file: line_ja.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 # | |
| 11 # TODO: Rule LB 8 remains as it was in Unicode 5.2 | |
| 12 # This is only because of a limitation of ICU break engine implementatio
n, | |
| 13 # not because the older behavior is desirable. | |
| 14 | |
| 15 # | |
| 16 # Character Classes defined by TR 14. | |
| 17 # | |
| 18 | |
| 19 !!chain; | |
| 20 !!LBCMNoChain; | |
| 21 | |
| 22 | |
| 23 !!lookAheadHardBreak; | |
| 24 # | |
| 25 # !!lookAheadHardBreak Described here because it is (as yet) undocumented el
sewhere | |
| 26 # and only used for the line break rules. | |
| 27 # | |
| 28 # It is used in the implementation of rule LB 10 | |
| 29 # which says to treat any combining mark that is not attached to a bas
e | |
| 30 # character as if it were of class AL (alphabetic). | |
| 31 # | |
| 32 # The problem occurs in the reverse rules. | |
| 33 # | |
| 34 # Consider a sequence like, with correct breaks as shown | |
| 35 # LF ID CM AL AL | |
| 36 # ^ ^ ^ | |
| 37 # Then consider the sequence without the initial ID (ideographic) | |
| 38 # LF CM AL AL | |
| 39 # ^ ^ | |
| 40 # Our CM, which in the first example was attached to the ideograph, | |
| 41 # is now unattached, becomes an alpha, and joins in with the other | |
| 42 # alphas. | |
| 43 # | |
| 44 # When iterating forwards, these sequences do not present any problems | |
| 45 # When iterating backwards, we need to look ahead when encountering | |
| 46 # a CM to see whether it attaches to something further on or not. | |
| 47 # (Look-ahead in a reverse rule is looking towards the start) | |
| 48 # | |
| 49 # If the CM is unattached, we need to force a break. | |
| 50 # | |
| 51 # !!lookAheadHardBreak forces the run time state machine to | |
| 52 # stop immediately when a look ahead rule ( '/' operator) matches, | |
| 53 # and set the match position to that of the look-ahead operator, | |
| 54 # no matter what other rules may be in play at the time. | |
| 55 # | |
| 56 # See rule LB 19 for an example. | |
| 57 # | |
| 58 | |
| 59 $AI = [:LineBreak = Ambiguous:]; | |
| 60 $AL = [:LineBreak = Alphabetic:]; | |
| 61 $BA = [:LineBreak = Break_After:]; | |
| 62 $BB = [:LineBreak = Break_Before:]; | |
| 63 $BK = [:LineBreak = Mandatory_Break:]; | |
| 64 $B2 = [:LineBreak = Break_Both:]; | |
| 65 $CB = [:LineBreak = Contingent_Break:]; | |
| 66 $CJ = [:LineBreak = Conditional_Japanese_Starter:]; | |
| 67 $CL = [:LineBreak = Close_Punctuation:]; | |
| 68 $CM = [:LineBreak = Combining_Mark:]; | |
| 69 $CP = [:LineBreak = Close_Parenthesis:]; | |
| 70 $CR = [:LineBreak = Carriage_Return:]; | |
| 71 $EX = [:LineBreak = Exclamation:]; | |
| 72 $GL = [:LineBreak = Glue:]; | |
| 73 $HL = [:LineBreak = Hebrew_Letter:]; | |
| 74 $HY = [:LineBreak = Hyphen:]; | |
| 75 $H2 = [:LineBreak = H2:]; | |
| 76 $H3 = [:LineBreak = H3:]; | |
| 77 $ID = [[:LineBreak = Ideographic:] $CJ]; | |
| 78 $IN = [:LineBreak = Inseperable:]; | |
| 79 $IS = [:LineBreak = Infix_Numeric:]; | |
| 80 $JL = [:LineBreak = JL:]; | |
| 81 $JV = [:LineBreak = JV:]; | |
| 82 $JT = [:LineBreak = JT:]; | |
| 83 $LF = [:LineBreak = Line_Feed:]; | |
| 84 $NL = [:LineBreak = Next_Line:]; | |
| 85 $NS = [:LineBreak = Nonstarter:]; | |
| 86 $NU = [:LineBreak = Numeric:]; | |
| 87 $OP = [:LineBreak = Open_Punctuation:]; | |
| 88 $PO = [:LineBreak = Postfix_Numeric:]; | |
| 89 $PR = [:LineBreak = Prefix_Numeric:]; | |
| 90 $QU = [:LineBreak = Quotation:]; | |
| 91 $RI = [:LineBreak = Regional_Indicator:]; | |
| 92 $SA = [:LineBreak = Complex_Context:]; | |
| 93 $SG = [:LineBreak = Surrogate:]; | |
| 94 $SP = [:LineBreak = Space:]; | |
| 95 $SY = [:LineBreak = Break_Symbols:]; | |
| 96 $WJ = [:LineBreak = Word_Joiner:]; | |
| 97 $XX = [:LineBreak = Unknown:]; | |
| 98 $ZW = [:LineBreak = ZWSpace:]; | |
| 99 | |
| 100 # Dictionary character set, for triggering language-based break engines. Curre
ntly | |
| 101 # limited to LineBreak=Complex_Context. Note that this set only works in Unico
de | |
| 102 # 5.0 or later as the definition of Complex_Context was corrected to include a
ll | |
| 103 # characters requiring dictionary break. | |
| 104 | |
| 105 $dictionary = [:LineBreak = Complex_Context:]; | |
| 106 | |
| 107 # | |
| 108 # Rule LB1. By default, treat AI (characters with ambiguous east Asian width)
, | |
| 109 # SA (South East Asian: Thai, Lao, Khmer) | |
| 110 # SG (Unpaired Surrogates) | |
| 111 # XX (Unknown, unassigned) | |
| 112 # as $AL (Alphabetic) | |
| 113 # | |
| 114 $ALPlus = [$AL $AI $SA $SG $XX]; | |
| 115 | |
| 116 # | |
| 117 # Combining Marks. X $CM* behaves as if it were X. Rule LB6. | |
| 118 # | |
| 119 $ALcm = $ALPlus $CM*; | |
| 120 $BAcm = $BA $CM*; | |
| 121 $BBcm = $BB $CM*; | |
| 122 $B2cm = $B2 $CM*; | |
| 123 $CLcm = $CL $CM*; | |
| 124 $CPcm = $CP $CM*; | |
| 125 $EXcm = $EX $CM*; | |
| 126 $GLcm = $GL $CM*; | |
| 127 $HLcm = $HL $CM*; | |
| 128 $HYcm = $HY $CM*; | |
| 129 $H2cm = $H2 $CM*; | |
| 130 $H3cm = $H3 $CM*; | |
| 131 $IDcm = $ID $CM*; | |
| 132 $INcm = $IN $CM*; | |
| 133 $IScm = $IS $CM*; | |
| 134 $JLcm = $JL $CM*; | |
| 135 $JVcm = $JV $CM*; | |
| 136 $JTcm = $JT $CM*; | |
| 137 $NScm = $NS $CM*; | |
| 138 $NUcm = $NU $CM*; | |
| 139 $OPcm = $OP $CM*; | |
| 140 $POcm = $PO $CM*; | |
| 141 $PRcm = $PR $CM*; | |
| 142 $QUcm = $QU $CM*; | |
| 143 $RIcm = $RI $CM*; | |
| 144 $SYcm = $SY $CM*; | |
| 145 $WJcm = $WJ $CM*; | |
| 146 | |
| 147 ## ------------------------------------------------- | |
| 148 | |
| 149 !!forward; | |
| 150 | |
| 151 # | |
| 152 # Each class of character can stand by itself as an unbroken token, with traili
ng combining stuff | |
| 153 # | |
| 154 $ALPlus $CM+; | |
| 155 $BA $CM+; | |
| 156 $BB $CM+; | |
| 157 $B2 $CM+; | |
| 158 $CL $CM+; | |
| 159 $CP $CM+; | |
| 160 $EX $CM+; | |
| 161 $GL $CM+; | |
| 162 $HL $CM+; | |
| 163 $HY $CM+; | |
| 164 $H2 $CM+; | |
| 165 $H3 $CM+; | |
| 166 $ID $CM+; | |
| 167 $IN $CM+; | |
| 168 $IS $CM+; | |
| 169 $JL $CM+; | |
| 170 $JV $CM+; | |
| 171 $JT $CM+; | |
| 172 $NS $CM+; | |
| 173 $NU $CM+; | |
| 174 $OP $CM+; | |
| 175 $PO $CM+; | |
| 176 $PR $CM+; | |
| 177 $QU $CM+; | |
| 178 $RI $CM+; | |
| 179 $SY $CM+; | |
| 180 $WJ $CM+; | |
| 181 | |
| 182 # | |
| 183 # CAN_CM is the set of characters that may combine with CM combining chars. | |
| 184 # Note that Linebreak UAX 14's concept of a combining char and the rules | |
| 185 # for what they can combine with are _very_ different from the rest of U
nicode. | |
| 186 # | |
| 187 # Note that $CM itself is left out of this set. If CM is needed as a ba
se | |
| 188 # it must be listed separately in the rule. | |
| 189 # | |
| 190 $CAN_CM = [^$SP $BK $CR $LF $NL $ZW $CM]; # Bases that can take CMs | |
| 191 $CANT_CM = [ $SP $BK $CR $LF $NL $ZW $CM]; # Bases that can't take CMs | |
| 192 | |
| 193 # | |
| 194 # AL_FOLLOW set of chars that can unconditionally follow an AL | |
| 195 # Needed in rules where stand-alone $CM s are treated as AL. | |
| 196 # Chaining is disabled with CM because it causes other failures, | |
| 197 # so for this one case we need to manually list out longer sequences. | |
| 198 # | |
| 199 $AL_FOLLOW_NOCM = [$BK $CR $LF $NL $ZW $SP]; | |
| 200 $AL_FOLLOW_CM = [$CL $CP $EX $HL $IS $SY $WJ $GL $OP $QU $BA $HY $NS $IN $NU $
ALPlus]; | |
| 201 $AL_FOLLOW = [$AL_FOLLOW_NOCM $AL_FOLLOW_CM]; | |
| 202 | |
| 203 | |
| 204 # | |
| 205 # Rule LB 4, 5 Mandatory (Hard) breaks. | |
| 206 # | |
| 207 $LB4Breaks = [$BK $CR $LF $NL]; | |
| 208 $LB4NonBreaks = [^$BK $CR $LF $NL]; | |
| 209 $CR $LF {100}; | |
| 210 | |
| 211 # | |
| 212 # LB 6 Do not break before hard line breaks. | |
| 213 # | |
| 214 $LB4NonBreaks? $LB4Breaks {100}; # LB 5 do not break before hard breaks. | |
| 215 $CAN_CM $CM* $LB4Breaks {100}; | |
| 216 $CM+ $LB4Breaks {100}; | |
| 217 | |
| 218 # LB 7 x SP | |
| 219 # x ZW | |
| 220 $LB4NonBreaks [$SP $ZW]; | |
| 221 $CAN_CM $CM* [$SP $ZW]; | |
| 222 $CM+ [$SP $ZW]; | |
| 223 | |
| 224 # | |
| 225 # LB 8 Break after zero width space | |
| 226 # TODO: ZW SP* <break> | |
| 227 # An engine change is required to write the reverse rule for this. | |
| 228 # For now, leave the Unicode 5.2 rule, ZW <break> | |
| 229 # | |
| 230 $LB8Breaks = [$LB4Breaks $ZW]; | |
| 231 $LB8NonBreaks = [[$LB4NonBreaks] - [$ZW]]; | |
| 232 | |
| 233 | |
| 234 # LB 9 Combining marks. X $CM needs to behave like X, where X is not
$SP, $BK $CR $LF $NL | |
| 235 # $CM not covered by the above needs to behave li
ke $AL | |
| 236 # See definition of $CAN_CM. | |
| 237 | |
| 238 $CAN_CM $CM+; # Stick together any combining sequences that d
on't match other rules. | |
| 239 $CM+; | |
| 240 | |
| 241 # | |
| 242 # LB 11 Do not break before or after WORD JOINER & related characters. | |
| 243 # | |
| 244 $CAN_CM $CM* $WJcm; | |
| 245 $LB8NonBreaks $WJcm; | |
| 246 $CM+ $WJcm; | |
| 247 | |
| 248 $WJcm $CANT_CM; | |
| 249 $WJcm $CAN_CM $CM*; | |
| 250 | |
| 251 # | |
| 252 # LB 12 Do not break after NBSP and related characters. | |
| 253 # GL x | |
| 254 # | |
| 255 $GLcm $CAN_CM $CM*; | |
| 256 $GLcm $CANT_CM; | |
| 257 | |
| 258 # | |
| 259 # LB 12a Do not break before NBSP and related characters ... | |
| 260 # [^SP BA HY] x GL | |
| 261 # | |
| 262 [[$LB8NonBreaks] - [$SP $BA $HY]] $CM* $GLcm; | |
| 263 $CM+ GLcm; | |
| 264 | |
| 265 | |
| 266 | |
| 267 # | |
| 268 # LB 13 Don't break before ']' or '!' or ';' or '/', even after spaces. | |
| 269 # | |
| 270 $LB8NonBreaks $CL; | |
| 271 $CAN_CM $CM* $CL; | |
| 272 $CM+ $CL; # by rule 10, stand-alone CM behaves as AL | |
| 273 | |
| 274 $LB8NonBreaks $CP; | |
| 275 $CAN_CM $CM* $CP; | |
| 276 $CM+ $CP; # by rule 10, stand-alone CM behaves as AL | |
| 277 | |
| 278 $LB8NonBreaks $EX; | |
| 279 $CAN_CM $CM* $EX; | |
| 280 $CM+ $EX; # by rule 10, stand-alone CM behaves as AL | |
| 281 | |
| 282 $LB8NonBreaks $IS; | |
| 283 $CAN_CM $CM* $IS; | |
| 284 $CM+ $IS; # by rule 10, stand-alone CM behaves as AL | |
| 285 | |
| 286 $LB8NonBreaks $SY; | |
| 287 $CAN_CM $CM* $SY; | |
| 288 $CM+ $SY; # by rule 10, stand-alone CM behaves as AL | |
| 289 | |
| 290 | |
| 291 # | |
| 292 # LB 14 Do not break after OP, even after spaces | |
| 293 # | |
| 294 $OPcm $SP* $CAN_CM $CM*; | |
| 295 $OPcm $SP* $CANT_CM; | |
| 296 | |
| 297 $OPcm $SP+ $CM+ $AL_FOLLOW?; # by rule 10, stand-alone CM behaves as AL | |
| 298 | |
| 299 # LB 15 | |
| 300 $QUcm $SP* $OPcm; | |
| 301 | |
| 302 # LB 16 | |
| 303 ($CLcm | $CPcm) $SP* $NScm; | |
| 304 | |
| 305 # LB 17 | |
| 306 $B2cm $SP* $B2cm; | |
| 307 | |
| 308 # | |
| 309 # LB 18 Break after spaces. | |
| 310 # | |
| 311 $LB18NonBreaks = [$LB8NonBreaks - [$SP]]; | |
| 312 $LB18Breaks = [$LB8Breaks $SP]; | |
| 313 | |
| 314 | |
| 315 # LB 19 | |
| 316 # x QU | |
| 317 $LB18NonBreaks $CM* $QUcm; | |
| 318 $CM+ $QUcm; | |
| 319 | |
| 320 # QU x | |
| 321 $QUcm .?; | |
| 322 $QUcm $LB18NonBreaks $CM*; # Don't let a combining mark go onto $CR, $BK, etc
. | |
| 323 # TODO: I don't think this rule is needed. | |
| 324 | |
| 325 | |
| 326 # LB 20 | |
| 327 # <break> $CB | |
| 328 # $CB <break> | |
| 329 | |
| 330 $LB20NonBreaks = [$LB18NonBreaks - $CB]; | |
| 331 | |
| 332 # LB 21 x (BA | HY | NS) | |
| 333 # BB x | |
| 334 # | |
| 335 $LB20NonBreaks $CM* ($BAcm | $HYcm | $NScm); | |
| 336 | |
| 337 $BBcm [^$CB]; # $BB x | |
| 338 $BBcm $LB20NonBreaks $CM*; | |
| 339 | |
| 340 # LB 21a Don't break after Hebrew + Hyphen | |
| 341 # HL (HY | BA) x | |
| 342 # | |
| 343 $HLcm ($HYcm | $BAcm) [^$CB]?; | |
| 344 | |
| 345 # LB 21b (forward) Don't break between SY and HL | |
| 346 # (break between HL and SY already disallowed by LB 13 above) | |
| 347 $SYcm $HLcm; | |
| 348 | |
| 349 # LB 22 | |
| 350 ($ALcm | $HLcm) $INcm; | |
| 351 $CM+ $INcm; # by rule 10, any otherwise unattached CM behaves as AL | |
| 352 $IDcm $INcm; | |
| 353 $INcm $INcm; | |
| 354 $NUcm $INcm; | |
| 355 | |
| 356 | |
| 357 # $LB 23 | |
| 358 $IDcm $POcm; | |
| 359 $ALcm $NUcm; # includes $LB19 | |
| 360 $HLcm $NUcm; | |
| 361 $CM+ $NUcm; # Rule 10, any otherwise unattached CM behaves as AL | |
| 362 $NUcm $ALcm; | |
| 363 $NUcm $HLcm; | |
| 364 | |
| 365 # | |
| 366 # LB 24 | |
| 367 # | |
| 368 $PRcm $IDcm; | |
| 369 $PRcm ($ALcm | $HLcm); | |
| 370 $POcm ($ALcm | $HLcm); | |
| 371 | |
| 372 # | |
| 373 # LB 25 Numbers. | |
| 374 # | |
| 375 ($PRcm | $POcm)? ($OPcm | $HYcm)? $NUcm ($NUcm | $SYcm | $IScm)* ($CLcm | $CPcm)
? ($PRcm | $POcm)?; | |
| 376 | |
| 377 # LB 26 Do not break a Korean syllable | |
| 378 # | |
| 379 $JLcm ($JLcm | $JVcm | $H2cm | $H3cm); | |
| 380 ($JVcm | $H2cm) ($JVcm | $JTcm); | |
| 381 ($JTcm | $H3cm) $JTcm; | |
| 382 | |
| 383 # LB 27 Treat korean Syllable Block the same as ID (don't break it) | |
| 384 ($JLcm | $JVcm | $JTcm | $H2cm | $H3cm) $INcm; | |
| 385 ($JLcm | $JVcm | $JTcm | $H2cm | $H3cm) $POcm; | |
| 386 $PRcm ($JLcm | $JVcm | $JTcm | $H2cm | $H3cm); | |
| 387 | |
| 388 | |
| 389 # LB 28 Do not break between alphabetics | |
| 390 # | |
| 391 ($ALcm | $HLcm) ($ALcm | $HLcm); | |
| 392 $CM+ ($ALcm | $HLcm); # The $CM+ is from rule 10, an unattached CM is treat
ed as AL | |
| 393 | |
| 394 # LB 29 | |
| 395 $IScm ($ALcm | $HLcm); | |
| 396 | |
| 397 # LB 30 | |
| 398 ($ALcm | $HLcm | $NUcm) $OPcm; | |
| 399 $CM+ $OPcm; # The $CM+ is from rule 10, an unattached CM is treated as A
L. | |
| 400 $CPcm ($ALcm | $HLcm | $NUcm); | |
| 401 | |
| 402 # LB 30a Do not break between regional indicators. | |
| 403 $RIcm $RIcm; | |
| 404 | |
| 405 # | |
| 406 # Reverse Rules. | |
| 407 # | |
| 408 ## ------------------------------------------------- | |
| 409 | |
| 410 !!reverse; | |
| 411 | |
| 412 $CM+ $ALPlus; | |
| 413 $CM+ $BA; | |
| 414 $CM+ $BB; | |
| 415 $CM+ $B2; | |
| 416 $CM+ $CL; | |
| 417 $CM+ $CP; | |
| 418 $CM+ $EX; | |
| 419 $CM+ $GL; | |
| 420 $CM+ $HL; | |
| 421 $CM+ $HY; | |
| 422 $CM+ $H2; | |
| 423 $CM+ $H3; | |
| 424 $CM+ $ID; | |
| 425 $CM+ $IN; | |
| 426 $CM+ $IS; | |
| 427 $CM+ $JL; | |
| 428 $CM+ $JV; | |
| 429 $CM+ $JT; | |
| 430 $CM+ $NS; | |
| 431 $CM+ $NU; | |
| 432 $CM+ $OP; | |
| 433 $CM+ $PO; | |
| 434 $CM+ $PR; | |
| 435 $CM+ $QU; | |
| 436 $CM+ $RI; | |
| 437 $CM+ $SY; | |
| 438 $CM+ $WJ; | |
| 439 $CM+; | |
| 440 | |
| 441 | |
| 442 # | |
| 443 # Sequences of the form (shown forwards) | |
| 444 # [CANT_CM] <break> [CM] [whatever] | |
| 445 # The CM needs to behave as an AL | |
| 446 # | |
| 447 $AL_FOLLOW $CM+ / ( | |
| 448 [$BK $CR $LF $NL $ZW {eof}] | | |
| 449 $SP+ $CM+ $SP | | |
| 450 $SP+ $CM* ([^$OP $CM $SP] | [$AL {eof}])); # if LB 14 will match, ne
ed to surpress this break. | |
| 451 # LB14 says OP SP* x .
| |
| 452 # becomes OP SP* x AL | |
| 453 # becomes OP SP* x CM+ AL_F
OLLOW | |
| 454 # | |
| 455 # Further note: the $AL in [$AL
{eof}] is only to work around | |
| 456 # a rule compiler
bug which complains about | |
| 457 # empty sets other
wise. | |
| 458 | |
| 459 # | |
| 460 # Sequences of the form (shown forwards) | |
| 461 # [CANT_CM] <break> [CM] <break> [PR] | |
| 462 # The CM needs to behave as an AL | |
| 463 # This rule is concerned about getting the second of the two <breaks> in place. | |
| 464 # | |
| 465 | |
| 466 [$PR ] / $CM+ [$BK $CR $LF $NL $ZW $SP {eof}]; | |
| 467 | |
| 468 | |
| 469 | |
| 470 # LB 4, 5, 5 | |
| 471 | |
| 472 $LB4Breaks [$LB4NonBreaks-$CM]; | |
| 473 $LB4Breaks $CM+ $CAN_CM; | |
| 474 $LF $CR; | |
| 475 | |
| 476 | |
| 477 # LB 7 x SP | |
| 478 # x ZW | |
| 479 [$SP $ZW] [$LB4NonBreaks-$CM]; | |
| 480 [$SP $ZW] $CM+ $CAN_CM; | |
| 481 | |
| 482 # LB 8 ZW SP* <break> | |
| 483 # TODO: to implement this, we need more than one look-ahead hard break in pl
ay at a time. | |
| 484 # Requires an engine enhancement. | |
| 485 # / $SP* $ZW | |
| 486 | |
| 487 # LB 9,10 Combining marks. | |
| 488 # X $CM needs to behave like X, where X is not $SP or controls. | |
| 489 # $CM not covered by the above needs to behave like $AL | |
| 490 # Stick together any combining sequences that don't match other rules. | |
| 491 $CM+ $CAN_CM; | |
| 492 | |
| 493 | |
| 494 # LB 11 | |
| 495 $CM* $WJ $CM* $CAN_CM; | |
| 496 $CM* $WJ [$LB8NonBreaks-$CM]; | |
| 497 | |
| 498 $CANT_CM $CM* $WJ; | |
| 499 $CM* $CAN_CM $CM* $WJ; | |
| 500 | |
| 501 # LB 12a | |
| 502 # [^SP BA HY] x GL | |
| 503 # | |
| 504 $CM* $GL $CM* [$LB8NonBreaks-[$CM $SP $BA $HY]]; | |
| 505 | |
| 506 # LB 12 | |
| 507 # GL x | |
| 508 # | |
| 509 $CANT_CM $CM* $GL; | |
| 510 $CM* $CAN_CM $CM* $GL; | |
| 511 | |
| 512 | |
| 513 # LB 13 | |
| 514 $CL $CM+ $CAN_CM; | |
| 515 $CP $CM+ $CAN_CM; | |
| 516 $EX $CM+ $CAN_CM; | |
| 517 $IS $CM+ $CAN_CM; | |
| 518 $SY $CM+ $CAN_CM; | |
| 519 | |
| 520 $CL [$LB8NonBreaks-$CM]; | |
| 521 $CP [$LB8NonBreaks-$CM]; | |
| 522 $EX [$LB8NonBreaks-$CM]; | |
| 523 $IS [$LB8NonBreaks-$CM]; | |
| 524 $SY [$LB8NonBreaks-$CM]; | |
| 525 | |
| 526 # Rule 13 & 14 taken together for an edge case. | |
| 527 # Match this, shown forward | |
| 528 # OP SP+ ($CM+ behaving as $AL) (CL | CP | EX | IS | IY) | |
| 529 # This really wants to chain at the $CM+ (which is acting as an $AL) | |
| 530 # except for $CM chaining being disabled. | |
| 531 [$CL $CP $EX $IS $SY] $CM+ $SP+ $CM* $OP; | |
| 532 | |
| 533 # LB 14 OP SP* x | |
| 534 # | |
| 535 $CM* $CAN_CM $SP* $CM* $OP; | |
| 536 $CANT_CM $SP* $CM* $OP; | |
| 537 $AL_FOLLOW? $CM+ $SP $SP* $CM* $OP; # by LB 10, behaves like $AL_FOLLOW? $
AL $SP* $CM* $OP | |
| 538 | |
| 539 $AL_FOLLOW_NOCM $CM+ $SP+ $CM* $OP; | |
| 540 $CM* $AL_FOLLOW_CM $CM+ $SP+ $CM* $OP; | |
| 541 $SY $CM $SP+ $OP; # TODO: Experiment. Remove. | |
| 542 | |
| 543 | |
| 544 | |
| 545 # LB 15 | |
| 546 $CM* $OP $SP* $CM* $QU; | |
| 547 | |
| 548 # LB 16 | |
| 549 $CM* $NS $SP* $CM* ($CL | $CP); | |
| 550 | |
| 551 # LB 17 | |
| 552 $CM* $B2 $SP* $CM* $B2; | |
| 553 | |
| 554 # LB 18 break after spaces | |
| 555 # Nothing explicit needed here. | |
| 556 | |
| 557 | |
| 558 # | |
| 559 # LB 19 | |
| 560 # | |
| 561 $CM* $QU $CM* $CAN_CM; # . x QU | |
| 562 $CM* $QU $LB18NonBreaks; | |
| 563 | |
| 564 | |
| 565 $CM* $CAN_CM $CM* $QU; # QU x . | |
| 566 $CANT_CM $CM* $QU; | |
| 567 | |
| 568 # | |
| 569 # LB 20 Break before and after CB. | |
| 570 # nothing needed here. | |
| 571 # | |
| 572 | |
| 573 # LB 21 | |
| 574 $CM* ($BA | $HY | $NS) $CM* [$LB20NonBreaks-$CM]; # . x (BA | HY | NS) | |
| 575 | |
| 576 $CM* [$LB20NonBreaks-$CM] $CM* $BB; # BB x . | |
| 577 [^$CB] $CM* $BB; # | |
| 578 | |
| 579 # LB21a | |
| 580 [^$CB] $CM* ($HY | $BA) $CM* $HL; | |
| 581 | |
| 582 # LB21b (reverse) | |
| 583 $CM* $HL $CM* $SY; | |
| 584 | |
| 585 # LB 22 | |
| 586 $CM* $IN $CM* ($ALPlus | $HL); | |
| 587 $CM* $IN $CM* $ID; | |
| 588 $CM* $IN $CM* $IN; | |
| 589 $CM* $IN $CM* $NU; | |
| 590 | |
| 591 # LB 23 | |
| 592 $CM* $PO $CM* $ID; | |
| 593 $CM* $NU $CM* ($ALPlus | $HL); | |
| 594 $CM* ($ALPlus | $HL) $CM* $NU; | |
| 595 | |
| 596 # LB 24 | |
| 597 $CM* $ID $CM* $PR; | |
| 598 $CM* ($ALPlus | $HL) $CM* $PR; | |
| 599 $CM* ($ALPlus | $HL) $CM* $PO; | |
| 600 | |
| 601 | |
| 602 # LB 25 | |
| 603 ($CM* ($PR | $PO))? ($CM* ($CL | $CP))? ($CM* ($NU | $IS | $SY))* $CM* $NU ($CM*
($OP | $HY))? ($CM* ($PR | $PO))?; | |
| 604 | |
| 605 # LB 26 | |
| 606 $CM* ($H3 | $H2 | $JV | $JL) $CM* $JL; | |
| 607 $CM* ($JT | $JV) $CM* ($H2 | $JV); | |
| 608 $CM* $JT $CM* ($H3 | $JT); | |
| 609 | |
| 610 # LB 27 | |
| 611 $CM* $IN $CM* ($H3 | $H2 | $JT | $JV | $JL); | |
| 612 $CM* $PO $CM* ($H3 | $H2 | $JT | $JV | $JL); | |
| 613 $CM* ($H3 | $H2 | $JT | $JV | $JL) $CM* $PR; | |
| 614 | |
| 615 # LB 28 | |
| 616 $CM* ($ALPlus | $HL) $CM* ($ALPlus | $HL); | |
| 617 | |
| 618 | |
| 619 # LB 29 | |
| 620 $CM* ($ALPlus | $HL) $CM* $IS; | |
| 621 | |
| 622 # LB 30 | |
| 623 $CM* $OP $CM* ($ALPlus | $HL | $NU); | |
| 624 $CM* ($ALPlus | $HL | $NU) $CM* $CP; | |
| 625 | |
| 626 # LB 30a | |
| 627 $CM* $RI $CM* $RI; | |
| 628 | |
| 629 ## ------------------------------------------------- | |
| 630 | |
| 631 !!safe_reverse; | |
| 632 | |
| 633 # LB 9 | |
| 634 $CM+ [^$CM $BK $CR $LF $NL $ZW $SP]; | |
| 635 $CM+ $SP / .; | |
| 636 | |
| 637 # LB 14 | |
| 638 $SP+ $CM* $OP; | |
| 639 | |
| 640 # LB 15 | |
| 641 $SP+ $CM* $QU; | |
| 642 | |
| 643 # LB 16 | |
| 644 $SP+ $CM* ($CL | $CP); | |
| 645 | |
| 646 # LB 17 | |
| 647 $SP+ $CM* $B2; | |
| 648 | |
| 649 # LB 21 | |
| 650 $CM* ($HY | $BA) $CM* $HL; | |
| 651 | |
| 652 # LB 25 | |
| 653 ($CM* ($IS | $SY))+ $CM* $NU; | |
| 654 ($CL | $CP) $CM* ($NU | $IS | $SY); | |
| 655 | |
| 656 # For dictionary-based break | |
| 657 $dictionary $dictionary; | |
| 658 | |
| 659 ## ------------------------------------------------- | |
| 660 | |
| 661 !!safe_forward; | |
| 662 | |
| 663 # Skip forward over all character classes that are involved in | |
| 664 # rules containing patterns with possibly more than one char | |
| 665 # of context. | |
| 666 # | |
| 667 # It might be slightly more efficient to have specific rules | |
| 668 # instead of one generic one, but only if we could | |
| 669 # turn off rule chaining. We don't want to move more | |
| 670 # than necessary. | |
| 671 # | |
| 672 [$CM $OP $QU $CL $CP $B2 $PR $HY $BA $SP $dictionary]+ [^$CM $OP $QU $CL $CP $B2
$PR $HY $BA $dictionary]; | |
| 673 $dictionary $dictionary; | |
| 674 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1621843002:
ICU 56 update step 1 (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/icu.git@561