1 # This set of tests is for features that are compatible with all versions of 2 # Perl >= 5.10, in non-UTF mode. It should run clean for the 8-bit, 16-bit, and 3 # 32-bit PCRE libraries, and also using the perltest.pl script. 4 5 #forbid_utf 6 #newline_default lf any anycrlf 7 #perltest 8 9 /the quick brown fox/ 10 the quick brown fox 11 What do you know about the quick brown fox? 12 \= Expect no match 13 The quick brown FOX 14 What do you know about THE QUICK BROWN FOX? 15 16 /The quick brown fox/i 17 the quick brown fox 18 The quick brown FOX 19 What do you know about the quick brown fox? 20 What do you know about THE QUICK BROWN FOX? 21 22 /abcd\t\n\r\f\a\e\071\x3b\$\\\?caxyz/ 23 abcd\t\n\r\f\a\e9;\$\\?caxyz 24 25 /a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz/ 26 abxyzpqrrrabbxyyyypqAzz 27 abxyzpqrrrabbxyyyypqAzz 28 aabxyzpqrrrabbxyyyypqAzz 29 aaabxyzpqrrrabbxyyyypqAzz 30 aaaabxyzpqrrrabbxyyyypqAzz 31 abcxyzpqrrrabbxyyyypqAzz 32 aabcxyzpqrrrabbxyyyypqAzz 33 aaabcxyzpqrrrabbxyyyypAzz 34 aaabcxyzpqrrrabbxyyyypqAzz 35 aaabcxyzpqrrrabbxyyyypqqAzz 36 aaabcxyzpqrrrabbxyyyypqqqAzz 37 aaabcxyzpqrrrabbxyyyypqqqqAzz 38 aaabcxyzpqrrrabbxyyyypqqqqqAzz 39 aaabcxyzpqrrrabbxyyyypqqqqqqAzz 40 aaaabcxyzpqrrrabbxyyyypqAzz 41 abxyzzpqrrrabbxyyyypqAzz 42 aabxyzzzpqrrrabbxyyyypqAzz 43 aaabxyzzzzpqrrrabbxyyyypqAzz 44 aaaabxyzzzzpqrrrabbxyyyypqAzz 45 abcxyzzpqrrrabbxyyyypqAzz 46 aabcxyzzzpqrrrabbxyyyypqAzz 47 aaabcxyzzzzpqrrrabbxyyyypqAzz 48 aaaabcxyzzzzpqrrrabbxyyyypqAzz 49 aaaabcxyzzzzpqrrrabbbxyyyypqAzz 50 aaaabcxyzzzzpqrrrabbbxyyyyypqAzz 51 aaabcxyzpqrrrabbxyyyypABzz 52 aaabcxyzpqrrrabbxyyyypABBzz 53 >>>aaabxyzpqrrrabbxyyyypqAzz 54 >aaaabxyzpqrrrabbxyyyypqAzz 55 >>>>abcxyzpqrrrabbxyyyypqAzz 56 \= Expect no match 57 abxyzpqrrabbxyyyypqAzz 58 abxyzpqrrrrabbxyyyypqAzz 59 abxyzpqrrrabxyyyypqAzz 60 aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz 61 aaaabcxyzzzzpqrrrabbbxyyypqAzz 62 aaabcxyzpqrrrabbxyyyypqqqqqqqAzz 63 64 /^(abc){1,2}zz/ 65 abczz 66 abcabczz 67 \= Expect no match 68 zz 69 abcabcabczz 70 >>abczz 71 72 /^(b+?|a){1,2}?c/ 73 bc 74 bbc 75 bbbc 76 bac 77 bbac 78 aac 79 abbbbbbbbbbbc 80 bbbbbbbbbbbac 81 \= Expect no match 82 aaac 83 abbbbbbbbbbbac 84 85 /^(b+|a){1,2}c/ 86 bc 87 bbc 88 bbbc 89 bac 90 bbac 91 aac 92 abbbbbbbbbbbc 93 bbbbbbbbbbbac 94 \= Expect no match 95 aaac 96 abbbbbbbbbbbac 97 98 /^(ba|b*){1,2}?bc/ 99 babc 100 bbabc 101 bababc 102 \= Expect no match 103 bababbc 104 babababc 105 106 /^\ca\cA\c[;\c:/ 107 \x01\x01\e;z 108 109 /^[ab\]cde]/ 110 athing 111 bthing 112 ]thing 113 cthing 114 dthing 115 ething 116 \= Expect no match 117 fthing 118 [thing 119 \\thing 120 121 /^[]cde]/ 122 ]thing 123 cthing 124 dthing 125 ething 126 \= Expect no match 127 athing 128 fthing 129 130 /^[^ab\]cde]/ 131 fthing 132 [thing 133 \\thing 134 \= Expect no match 135 athing 136 bthing 137 ]thing 138 cthing 139 dthing 140 ething 141 142 /^[^]cde]/ 143 athing 144 fthing 145 \= Expect no match 146 ]thing 147 cthing 148 dthing 149 ething 150 151 /^\/ 152 153 154 /^/ 155 156 157 /^[0-9]+$/ 158 0 159 1 160 2 161 3 162 4 163 5 164 6 165 7 166 8 167 9 168 10 169 100 170 \= Expect no match 171 abc 172 173 /^.*nter/ 174 enter 175 inter 176 uponter 177 178 /^xxx[0-9]+$/ 179 xxx0 180 xxx1234 181 \= Expect no match 182 xxx 183 184 /^.+[0-9][0-9][0-9]$/ 185 x123 186 x1234 187 xx123 188 123456 189 \= Expect no match 190 123 191 192 /^.+?[0-9][0-9][0-9]$/ 193 x123 194 x1234 195 xx123 196 123456 197 \= Expect no match 198 123 199 200 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/ 201 abc!pqr=apquxz.ixr.zzz.ac.uk 202 \= Expect no match 203 !pqr=apquxz.ixr.zzz.ac.uk 204 abc!=apquxz.ixr.zzz.ac.uk 205 abc!pqr=apquxz:ixr.zzz.ac.uk 206 abc!pqr=apquxz.ixr.zzz.ac.ukk 207 208 /:/ 209 Well, we need a colon: somewhere 210 \= Expect no match 211 Fail without a colon 212 213 /([\da-f:]+)$/i 214 0abc 215 abc 216 fed 217 E 218 :: 219 5f03:12C0::932e 220 fed def 221 Any old stuff 222 \= Expect no match 223 0zzz 224 gzzz 225 fed\x20 226 Any old rubbish 227 228 /^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ 229 .1.2.3 230 A.12.123.0 231 \= Expect no match 232 .1.2.3333 233 1.2.3 234 1234.2.3 235 236 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 237 1 IN SOA non-sp1 non-sp2( 238 1 IN SOA non-sp1 non-sp2 ( 239 \= Expect no match 240 1IN SOA non-sp1 non-sp2( 241 242 /^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/ 243 a. 244 Z. 245 2. 246 ab-c.pq-r. 247 sxk.zzz.ac.uk. 248 x-.y-. 249 \= Expect no match 250 -abc.peq. 251 252 /^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/ 253 *.a 254 *.b0-a 255 *.c3-b.c 256 *.c-a.b-c 257 \= Expect no match 258 *.0 259 *.a- 260 *.a-b.c- 261 *.c-a.0-c 262 263 /^(?=ab(de))(abd)(e)/ 264 abde 265 266 /^(?!(ab)de|x)(abd)(f)/ 267 abdf 268 269 /^(?=(ab(cd)))(ab)/ 270 abcd 271 272 /^[\da-f](\.[\da-f])*$/i 273 a.b.c.d 274 A.B.C.D 275 a.b.c.1.2.3.C 276 277 /^\".*\"\s*(;.*)?$/ 278 \"1234\" 279 \"abcd\" ; 280 \"\" ; rhubarb 281 \= Expect no match 282 \"1234\" : things 283 284 /^$/ 285 \ 286 \= Expect no match 287 A non-empty line 288 289 / ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/x 290 ab c 291 \= Expect no match 292 abc 293 ab cde 294 295 /(?x) ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/ 296 ab c 297 \= Expect no match 298 abc 299 ab cde 300 301 /^ a\ b[c ]d $/x 302 a bcd 303 a b d 304 \= Expect no match 305 abcd 306 ab d 307 308 /^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$/ 309 abcdefhijklm 310 311 /^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$/ 312 abcdefhijklm 313 314 /^[\w][\W][\s][\S][\d][\D][\b][\n][\c]][\022]/ 315 a+ Z0+\x08\n\x1d\x12 316 317 /^[.^$|()*+?{,}]+/ 318 .^\$(*+)|{?,?} 319 320 /^a*\w/ 321 z 322 az 323 aaaz 324 a 325 aa 326 aaaa 327 a+ 328 aa+ 329 330 /^a*?\w/ 331 z 332 az 333 aaaz 334 a 335 aa 336 aaaa 337 a+ 338 aa+ 339 340 /^a+\w/ 341 az 342 aaaz 343 aa 344 aaaa 345 aa+ 346 347 /^a+?\w/ 348 az 349 aaaz 350 aa 351 aaaa 352 aa+ 353 354 /^\d{8}\w{2,}/ 355 1234567890 356 12345678ab 357 12345678__ 358 \= Expect no match 359 1234567 360 361 /^[aeiou\d]{4,5}$/ 362 uoie 363 1234 364 12345 365 aaaaa 366 \= Expect no match 367 123456 368 369 /^[aeiou\d]{4,5}?/ 370 uoie 371 1234 372 12345 373 aaaaa 374 123456 375 376 /\A(abc|def)=(\1){2,3}\Z/ 377 abc=abcabc 378 def=defdefdef 379 \= Expect no match 380 abc=defdef 381 382 /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/ 383 abcdefghijkcda2 384 abcdefghijkkkkcda2 385 386 /(cat(a(ract|tonic)|erpillar)) \1()2(3)/ 387 cataract cataract23 388 catatonic catatonic23 389 caterpillar caterpillar23 390 391 392 /^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]/ 393 From abcd Mon Sep 01 12:33:02 1997 394 395 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/ 396 From abcd Mon Sep 01 12:33:02 1997 397 From abcd Mon Sep 1 12:33:02 1997 398 \= Expect no match 399 From abcd Sep 01 12:33:02 1997 400 401 /^12.34/s 402 12\n34 403 12\r34 404 405 /\w+(?=\t)/ 406 the quick brown\t fox 407 408 /foo(?!bar)(.*)/ 409 foobar is foolish see? 410 411 /(?:(?!foo)...|^.{0,2})bar(.*)/ 412 foobar crowbar etc 413 barrel 414 2barrel 415 A barrel 416 417 /^(\D*)(?=\d)(?!123)/ 418 abc456 419 \= Expect no match 420 abc123 421 422 /^1234(?# test newlines 423 inside)/ 424 1234 425 426 /^1234 #comment in extended re 427 /x 428 1234 429 430 /#rhubarb 431 abcd/x 432 abcd 433 434 /^abcd#rhubarb/x 435 abcd 436 437 /^(a)\1{2,3}(.)/ 438 aaab 439 aaaab 440 aaaaab 441 aaaaaab 442 443 /(?!^)abc/ 444 the abc 445 \= Expect no match 446 abc 447 448 /(?=^)abc/ 449 abc 450 \= Expect no match 451 the abc 452 453 /^[ab]{1,3}(ab*|b)/ 454 aabbbbb 455 456 /^[ab]{1,3}?(ab*|b)/ 457 aabbbbb 458 459 /^[ab]{1,3}?(ab*?|b)/ 460 aabbbbb 461 462 /^[ab]{1,3}(ab*?|b)/ 463 aabbbbb 464 465 / (?: [\040\t] | \( 466 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 467 \) )* # optional leading comment 468 (?: (?: 469 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 470 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 471 | 472 " (?: # opening quote... 473 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 474 | # or 475 \\ [^\x80-\xff] # Escaped something (something != CR) 476 )* " # closing quote 477 ) # initial word 478 (?: (?: [\040\t] | \( 479 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 480 \) )* \. (?: [\040\t] | \( 481 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 482 \) )* (?: 483 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 484 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 485 | 486 " (?: # opening quote... 487 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 488 | # or 489 \\ [^\x80-\xff] # Escaped something (something != CR) 490 )* " # closing quote 491 ) )* # further okay, if led by a period 492 (?: [\040\t] | \( 493 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 494 \) )* @ (?: [\040\t] | \( 495 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 496 \) )* (?: 497 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 498 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 499 | \[ # [ 500 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 501 \] # ] 502 ) # initial subdomain 503 (?: # 504 (?: [\040\t] | \( 505 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 506 \) )* \. # if led by a period... 507 (?: [\040\t] | \( 508 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 509 \) )* (?: 510 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 511 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 512 | \[ # [ 513 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 514 \] # ] 515 ) # ...further okay 516 )* 517 # address 518 | # or 519 (?: 520 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 521 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 522 | 523 " (?: # opening quote... 524 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 525 | # or 526 \\ [^\x80-\xff] # Escaped something (something != CR) 527 )* " # closing quote 528 ) # one word, optionally followed by.... 529 (?: 530 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] | # atom and space parts, or... 531 \( 532 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 533 \) | # comments, or... 534 535 " (?: # opening quote... 536 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 537 | # or 538 \\ [^\x80-\xff] # Escaped something (something != CR) 539 )* " # closing quote 540 # quoted strings 541 )* 542 < (?: [\040\t] | \( 543 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 544 \) )* # leading < 545 (?: @ (?: [\040\t] | \( 546 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 547 \) )* (?: 548 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 549 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 550 | \[ # [ 551 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 552 \] # ] 553 ) # initial subdomain 554 (?: # 555 (?: [\040\t] | \( 556 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 557 \) )* \. # if led by a period... 558 (?: [\040\t] | \( 559 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 560 \) )* (?: 561 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 562 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 563 | \[ # [ 564 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 565 \] # ] 566 ) # ...further okay 567 )* 568 569 (?: (?: [\040\t] | \( 570 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 571 \) )* , (?: [\040\t] | \( 572 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 573 \) )* @ (?: [\040\t] | \( 574 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 575 \) )* (?: 576 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 577 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 578 | \[ # [ 579 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 580 \] # ] 581 ) # initial subdomain 582 (?: # 583 (?: [\040\t] | \( 584 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 585 \) )* \. # if led by a period... 586 (?: [\040\t] | \( 587 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 588 \) )* (?: 589 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 590 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 591 | \[ # [ 592 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 593 \] # ] 594 ) # ...further okay 595 )* 596 )* # further okay, if led by comma 597 : # closing colon 598 (?: [\040\t] | \( 599 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 600 \) )* )? # optional route 601 (?: 602 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 603 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 604 | 605 " (?: # opening quote... 606 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 607 | # or 608 \\ [^\x80-\xff] # Escaped something (something != CR) 609 )* " # closing quote 610 ) # initial word 611 (?: (?: [\040\t] | \( 612 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 613 \) )* \. (?: [\040\t] | \( 614 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 615 \) )* (?: 616 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 617 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 618 | 619 " (?: # opening quote... 620 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 621 | # or 622 \\ [^\x80-\xff] # Escaped something (something != CR) 623 )* " # closing quote 624 ) )* # further okay, if led by a period 625 (?: [\040\t] | \( 626 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 627 \) )* @ (?: [\040\t] | \( 628 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 629 \) )* (?: 630 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 631 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 632 | \[ # [ 633 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 634 \] # ] 635 ) # initial subdomain 636 (?: # 637 (?: [\040\t] | \( 638 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 639 \) )* \. # if led by a period... 640 (?: [\040\t] | \( 641 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 642 \) )* (?: 643 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 644 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 645 | \[ # [ 646 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 647 \] # ] 648 ) # ...further okay 649 )* 650 # address spec 651 (?: [\040\t] | \( 652 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 653 \) )* > # trailing > 654 # name and address 655 ) (?: [\040\t] | \( 656 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 657 \) )* # optional trailing comment 658 /x 659 Alan Other <user\@dom.ain> 660 <user\@dom.ain> 661 user\@dom.ain 662 \"A. Other\" <user.1234\@dom.ain> (a comment) 663 A. Other <user.1234\@dom.ain> (a comment) 664 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 665 A missing angle <user\@some.where 666 \= Expect no match 667 The quick brown fox 668 669 /[\040\t]* # Nab whitespace. 670 (?: 671 \( # ( 672 [^\\\x80-\xff\n\015()] * # normal* 673 (?: # ( 674 (?: \\ [^\x80-\xff] | 675 \( # ( 676 [^\\\x80-\xff\n\015()] * # normal* 677 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 678 \) # ) 679 ) # special 680 [^\\\x80-\xff\n\015()] * # normal* 681 )* # )* 682 \) # ) 683 [\040\t]* )* # If comment found, allow more spaces. 684 # optional leading comment 685 (?: 686 (?: 687 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 688 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 689 # Atom 690 | # or 691 " # " 692 [^\\\x80-\xff\n\015"] * # normal 693 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 694 " # " 695 # Quoted string 696 ) 697 [\040\t]* # Nab whitespace. 698 (?: 699 \( # ( 700 [^\\\x80-\xff\n\015()] * # normal* 701 (?: # ( 702 (?: \\ [^\x80-\xff] | 703 \( # ( 704 [^\\\x80-\xff\n\015()] * # normal* 705 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 706 \) # ) 707 ) # special 708 [^\\\x80-\xff\n\015()] * # normal* 709 )* # )* 710 \) # ) 711 [\040\t]* )* # If comment found, allow more spaces. 712 (?: 713 \. 714 [\040\t]* # Nab whitespace. 715 (?: 716 \( # ( 717 [^\\\x80-\xff\n\015()] * # normal* 718 (?: # ( 719 (?: \\ [^\x80-\xff] | 720 \( # ( 721 [^\\\x80-\xff\n\015()] * # normal* 722 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 723 \) # ) 724 ) # special 725 [^\\\x80-\xff\n\015()] * # normal* 726 )* # )* 727 \) # ) 728 [\040\t]* )* # If comment found, allow more spaces. 729 (?: 730 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 731 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 732 # Atom 733 | # or 734 " # " 735 [^\\\x80-\xff\n\015"] * # normal 736 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 737 " # " 738 # Quoted string 739 ) 740 [\040\t]* # Nab whitespace. 741 (?: 742 \( # ( 743 [^\\\x80-\xff\n\015()] * # normal* 744 (?: # ( 745 (?: \\ [^\x80-\xff] | 746 \( # ( 747 [^\\\x80-\xff\n\015()] * # normal* 748 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 749 \) # ) 750 ) # special 751 [^\\\x80-\xff\n\015()] * # normal* 752 )* # )* 753 \) # ) 754 [\040\t]* )* # If comment found, allow more spaces. 755 # additional words 756 )* 757 @ 758 [\040\t]* # Nab whitespace. 759 (?: 760 \( # ( 761 [^\\\x80-\xff\n\015()] * # normal* 762 (?: # ( 763 (?: \\ [^\x80-\xff] | 764 \( # ( 765 [^\\\x80-\xff\n\015()] * # normal* 766 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 767 \) # ) 768 ) # special 769 [^\\\x80-\xff\n\015()] * # normal* 770 )* # )* 771 \) # ) 772 [\040\t]* )* # If comment found, allow more spaces. 773 (?: 774 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 775 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 776 | 777 \[ # [ 778 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 779 \] # ] 780 ) 781 [\040\t]* # Nab whitespace. 782 (?: 783 \( # ( 784 [^\\\x80-\xff\n\015()] * # normal* 785 (?: # ( 786 (?: \\ [^\x80-\xff] | 787 \( # ( 788 [^\\\x80-\xff\n\015()] * # normal* 789 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 790 \) # ) 791 ) # special 792 [^\\\x80-\xff\n\015()] * # normal* 793 )* # )* 794 \) # ) 795 [\040\t]* )* # If comment found, allow more spaces. 796 # optional trailing comments 797 (?: 798 \. 799 [\040\t]* # Nab whitespace. 800 (?: 801 \( # ( 802 [^\\\x80-\xff\n\015()] * # normal* 803 (?: # ( 804 (?: \\ [^\x80-\xff] | 805 \( # ( 806 [^\\\x80-\xff\n\015()] * # normal* 807 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 808 \) # ) 809 ) # special 810 [^\\\x80-\xff\n\015()] * # normal* 811 )* # )* 812 \) # ) 813 [\040\t]* )* # If comment found, allow more spaces. 814 (?: 815 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 816 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 817 | 818 \[ # [ 819 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 820 \] # ] 821 ) 822 [\040\t]* # Nab whitespace. 823 (?: 824 \( # ( 825 [^\\\x80-\xff\n\015()] * # normal* 826 (?: # ( 827 (?: \\ [^\x80-\xff] | 828 \( # ( 829 [^\\\x80-\xff\n\015()] * # normal* 830 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 831 \) # ) 832 ) # special 833 [^\\\x80-\xff\n\015()] * # normal* 834 )* # )* 835 \) # ) 836 [\040\t]* )* # If comment found, allow more spaces. 837 # optional trailing comments 838 )* 839 # address 840 | # or 841 (?: 842 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 843 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 844 # Atom 845 | # or 846 " # " 847 [^\\\x80-\xff\n\015"] * # normal 848 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 849 " # " 850 # Quoted string 851 ) 852 # leading word 853 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # "normal" atoms and or spaces 854 (?: 855 (?: 856 \( # ( 857 [^\\\x80-\xff\n\015()] * # normal* 858 (?: # ( 859 (?: \\ [^\x80-\xff] | 860 \( # ( 861 [^\\\x80-\xff\n\015()] * # normal* 862 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 863 \) # ) 864 ) # special 865 [^\\\x80-\xff\n\015()] * # normal* 866 )* # )* 867 \) # ) 868 | 869 " # " 870 [^\\\x80-\xff\n\015"] * # normal 871 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 872 " # " 873 ) # "special" comment or quoted string 874 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # more "normal" 875 )* 876 < 877 [\040\t]* # Nab whitespace. 878 (?: 879 \( # ( 880 [^\\\x80-\xff\n\015()] * # normal* 881 (?: # ( 882 (?: \\ [^\x80-\xff] | 883 \( # ( 884 [^\\\x80-\xff\n\015()] * # normal* 885 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 886 \) # ) 887 ) # special 888 [^\\\x80-\xff\n\015()] * # normal* 889 )* # )* 890 \) # ) 891 [\040\t]* )* # If comment found, allow more spaces. 892 # < 893 (?: 894 @ 895 [\040\t]* # Nab whitespace. 896 (?: 897 \( # ( 898 [^\\\x80-\xff\n\015()] * # normal* 899 (?: # ( 900 (?: \\ [^\x80-\xff] | 901 \( # ( 902 [^\\\x80-\xff\n\015()] * # normal* 903 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 904 \) # ) 905 ) # special 906 [^\\\x80-\xff\n\015()] * # normal* 907 )* # )* 908 \) # ) 909 [\040\t]* )* # If comment found, allow more spaces. 910 (?: 911 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 912 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 913 | 914 \[ # [ 915 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 916 \] # ] 917 ) 918 [\040\t]* # Nab whitespace. 919 (?: 920 \( # ( 921 [^\\\x80-\xff\n\015()] * # normal* 922 (?: # ( 923 (?: \\ [^\x80-\xff] | 924 \( # ( 925 [^\\\x80-\xff\n\015()] * # normal* 926 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 927 \) # ) 928 ) # special 929 [^\\\x80-\xff\n\015()] * # normal* 930 )* # )* 931 \) # ) 932 [\040\t]* )* # If comment found, allow more spaces. 933 # optional trailing comments 934 (?: 935 \. 936 [\040\t]* # Nab whitespace. 937 (?: 938 \( # ( 939 [^\\\x80-\xff\n\015()] * # normal* 940 (?: # ( 941 (?: \\ [^\x80-\xff] | 942 \( # ( 943 [^\\\x80-\xff\n\015()] * # normal* 944 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 945 \) # ) 946 ) # special 947 [^\\\x80-\xff\n\015()] * # normal* 948 )* # )* 949 \) # ) 950 [\040\t]* )* # If comment found, allow more spaces. 951 (?: 952 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 953 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 954 | 955 \[ # [ 956 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 957 \] # ] 958 ) 959 [\040\t]* # Nab whitespace. 960 (?: 961 \( # ( 962 [^\\\x80-\xff\n\015()] * # normal* 963 (?: # ( 964 (?: \\ [^\x80-\xff] | 965 \( # ( 966 [^\\\x80-\xff\n\015()] * # normal* 967 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 968 \) # ) 969 ) # special 970 [^\\\x80-\xff\n\015()] * # normal* 971 )* # )* 972 \) # ) 973 [\040\t]* )* # If comment found, allow more spaces. 974 # optional trailing comments 975 )* 976 (?: , 977 [\040\t]* # Nab whitespace. 978 (?: 979 \( # ( 980 [^\\\x80-\xff\n\015()] * # normal* 981 (?: # ( 982 (?: \\ [^\x80-\xff] | 983 \( # ( 984 [^\\\x80-\xff\n\015()] * # normal* 985 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 986 \) # ) 987 ) # special 988 [^\\\x80-\xff\n\015()] * # normal* 989 )* # )* 990 \) # ) 991 [\040\t]* )* # If comment found, allow more spaces. 992 @ 993 [\040\t]* # Nab whitespace. 994 (?: 995 \( # ( 996 [^\\\x80-\xff\n\015()] * # normal* 997 (?: # ( 998 (?: \\ [^\x80-\xff] | 999 \( # ( 1000 [^\\\x80-\xff\n\015()] * # normal* 1001 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1002 \) # ) 1003 ) # special 1004 [^\\\x80-\xff\n\015()] * # normal* 1005 )* # )* 1006 \) # ) 1007 [\040\t]* )* # If comment found, allow more spaces. 1008 (?: 1009 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1010 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1011 | 1012 \[ # [ 1013 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1014 \] # ] 1015 ) 1016 [\040\t]* # Nab whitespace. 1017 (?: 1018 \( # ( 1019 [^\\\x80-\xff\n\015()] * # normal* 1020 (?: # ( 1021 (?: \\ [^\x80-\xff] | 1022 \( # ( 1023 [^\\\x80-\xff\n\015()] * # normal* 1024 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1025 \) # ) 1026 ) # special 1027 [^\\\x80-\xff\n\015()] * # normal* 1028 )* # )* 1029 \) # ) 1030 [\040\t]* )* # If comment found, allow more spaces. 1031 # optional trailing comments 1032 (?: 1033 \. 1034 [\040\t]* # Nab whitespace. 1035 (?: 1036 \( # ( 1037 [^\\\x80-\xff\n\015()] * # normal* 1038 (?: # ( 1039 (?: \\ [^\x80-\xff] | 1040 \( # ( 1041 [^\\\x80-\xff\n\015()] * # normal* 1042 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1043 \) # ) 1044 ) # special 1045 [^\\\x80-\xff\n\015()] * # normal* 1046 )* # )* 1047 \) # ) 1048 [\040\t]* )* # If comment found, allow more spaces. 1049 (?: 1050 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1051 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1052 | 1053 \[ # [ 1054 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1055 \] # ] 1056 ) 1057 [\040\t]* # Nab whitespace. 1058 (?: 1059 \( # ( 1060 [^\\\x80-\xff\n\015()] * # normal* 1061 (?: # ( 1062 (?: \\ [^\x80-\xff] | 1063 \( # ( 1064 [^\\\x80-\xff\n\015()] * # normal* 1065 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1066 \) # ) 1067 ) # special 1068 [^\\\x80-\xff\n\015()] * # normal* 1069 )* # )* 1070 \) # ) 1071 [\040\t]* )* # If comment found, allow more spaces. 1072 # optional trailing comments 1073 )* 1074 )* # additional domains 1075 : 1076 [\040\t]* # Nab whitespace. 1077 (?: 1078 \( # ( 1079 [^\\\x80-\xff\n\015()] * # normal* 1080 (?: # ( 1081 (?: \\ [^\x80-\xff] | 1082 \( # ( 1083 [^\\\x80-\xff\n\015()] * # normal* 1084 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1085 \) # ) 1086 ) # special 1087 [^\\\x80-\xff\n\015()] * # normal* 1088 )* # )* 1089 \) # ) 1090 [\040\t]* )* # If comment found, allow more spaces. 1091 # optional trailing comments 1092 )? # optional route 1093 (?: 1094 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1095 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1096 # Atom 1097 | # or 1098 " # " 1099 [^\\\x80-\xff\n\015"] * # normal 1100 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1101 " # " 1102 # Quoted string 1103 ) 1104 [\040\t]* # Nab whitespace. 1105 (?: 1106 \( # ( 1107 [^\\\x80-\xff\n\015()] * # normal* 1108 (?: # ( 1109 (?: \\ [^\x80-\xff] | 1110 \( # ( 1111 [^\\\x80-\xff\n\015()] * # normal* 1112 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1113 \) # ) 1114 ) # special 1115 [^\\\x80-\xff\n\015()] * # normal* 1116 )* # )* 1117 \) # ) 1118 [\040\t]* )* # If comment found, allow more spaces. 1119 (?: 1120 \. 1121 [\040\t]* # Nab whitespace. 1122 (?: 1123 \( # ( 1124 [^\\\x80-\xff\n\015()] * # normal* 1125 (?: # ( 1126 (?: \\ [^\x80-\xff] | 1127 \( # ( 1128 [^\\\x80-\xff\n\015()] * # normal* 1129 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1130 \) # ) 1131 ) # special 1132 [^\\\x80-\xff\n\015()] * # normal* 1133 )* # )* 1134 \) # ) 1135 [\040\t]* )* # If comment found, allow more spaces. 1136 (?: 1137 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1138 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1139 # Atom 1140 | # or 1141 " # " 1142 [^\\\x80-\xff\n\015"] * # normal 1143 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1144 " # " 1145 # Quoted string 1146 ) 1147 [\040\t]* # Nab whitespace. 1148 (?: 1149 \( # ( 1150 [^\\\x80-\xff\n\015()] * # normal* 1151 (?: # ( 1152 (?: \\ [^\x80-\xff] | 1153 \( # ( 1154 [^\\\x80-\xff\n\015()] * # normal* 1155 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1156 \) # ) 1157 ) # special 1158 [^\\\x80-\xff\n\015()] * # normal* 1159 )* # )* 1160 \) # ) 1161 [\040\t]* )* # If comment found, allow more spaces. 1162 # additional words 1163 )* 1164 @ 1165 [\040\t]* # Nab whitespace. 1166 (?: 1167 \( # ( 1168 [^\\\x80-\xff\n\015()] * # normal* 1169 (?: # ( 1170 (?: \\ [^\x80-\xff] | 1171 \( # ( 1172 [^\\\x80-\xff\n\015()] * # normal* 1173 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1174 \) # ) 1175 ) # special 1176 [^\\\x80-\xff\n\015()] * # normal* 1177 )* # )* 1178 \) # ) 1179 [\040\t]* )* # If comment found, allow more spaces. 1180 (?: 1181 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1182 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1183 | 1184 \[ # [ 1185 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1186 \] # ] 1187 ) 1188 [\040\t]* # Nab whitespace. 1189 (?: 1190 \( # ( 1191 [^\\\x80-\xff\n\015()] * # normal* 1192 (?: # ( 1193 (?: \\ [^\x80-\xff] | 1194 \( # ( 1195 [^\\\x80-\xff\n\015()] * # normal* 1196 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1197 \) # ) 1198 ) # special 1199 [^\\\x80-\xff\n\015()] * # normal* 1200 )* # )* 1201 \) # ) 1202 [\040\t]* )* # If comment found, allow more spaces. 1203 # optional trailing comments 1204 (?: 1205 \. 1206 [\040\t]* # Nab whitespace. 1207 (?: 1208 \( # ( 1209 [^\\\x80-\xff\n\015()] * # normal* 1210 (?: # ( 1211 (?: \\ [^\x80-\xff] | 1212 \( # ( 1213 [^\\\x80-\xff\n\015()] * # normal* 1214 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1215 \) # ) 1216 ) # special 1217 [^\\\x80-\xff\n\015()] * # normal* 1218 )* # )* 1219 \) # ) 1220 [\040\t]* )* # If comment found, allow more spaces. 1221 (?: 1222 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1223 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1224 | 1225 \[ # [ 1226 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1227 \] # ] 1228 ) 1229 [\040\t]* # Nab whitespace. 1230 (?: 1231 \( # ( 1232 [^\\\x80-\xff\n\015()] * # normal* 1233 (?: # ( 1234 (?: \\ [^\x80-\xff] | 1235 \( # ( 1236 [^\\\x80-\xff\n\015()] * # normal* 1237 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1238 \) # ) 1239 ) # special 1240 [^\\\x80-\xff\n\015()] * # normal* 1241 )* # )* 1242 \) # ) 1243 [\040\t]* )* # If comment found, allow more spaces. 1244 # optional trailing comments 1245 )* 1246 # address spec 1247 > # > 1248 # name and address 1249 ) 1250 /x 1251 Alan Other <user\@dom.ain> 1252 <user\@dom.ain> 1253 user\@dom.ain 1254 \"A. Other\" <user.1234\@dom.ain> (a comment) 1255 A. Other <user.1234\@dom.ain> (a comment) 1256 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 1257 A missing angle <user\@some.where 1258 \= Expect no match 1259 The quick brown fox 1260 1261 /abc\0def\00pqr\000xyz\0000AB/ 1262 abc\0def\00pqr\000xyz\0000AB 1263 abc456 abc\0def\00pqr\000xyz\0000ABCDE 1264 1265 /abc\x0def\x00pqr\x000xyz\x0000AB/ 1266 abc\x0def\x00pqr\x000xyz\x0000AB 1267 abc456 abc\x0def\x00pqr\x000xyz\x0000ABCDE 1268 1269 /^[\000-\037]/ 1270 \0A 1271 \01B 1272 \037C 1273 1274 /\0*/ 1275 \0\0\0\0 1276 1277 /A\x0{2,3}Z/ 1278 The A\x0\x0Z 1279 An A\0\x0\0Z 1280 \= Expect no match 1281 A\0Z 1282 A\0\x0\0\x0Z 1283 1284 /^(cow|)\1(bell)/ 1285 cowcowbell 1286 bell 1287 \= Expect no match 1288 cowbell 1289 1290 /^\s/ 1291 \040abc 1292 \x0cabc 1293 \nabc 1294 \rabc 1295 \tabc 1296 \= Expect no match 1297 abc 1298 1299 /^a b 1300 c/x 1302 abc 1303 1304 /^(a|)\1*b/ 1305 ab 1306 aaaab 1307 b 1308 \= Expect no match 1309 acb 1310 1311 /^(a|)\1+b/ 1312 aab 1313 aaaab 1314 b 1315 \= Expect no match 1316 ab 1317 1318 /^(a|)\1?b/ 1319 ab 1320 aab 1321 b 1322 \= Expect no match 1323 acb 1324 1325 /^(a|)\1{2}b/ 1326 aaab 1327 b 1328 \= Expect no match 1329 ab 1330 aab 1331 aaaab 1332 1333 /^(a|)\1{2,3}b/ 1334 aaab 1335 aaaab 1336 b 1337 \= Expect no match 1338 ab 1339 aab 1340 aaaaab 1341 1342 /ab{1,3}bc/ 1343 abbbbc 1344 abbbc 1345 abbc 1346 \= Expect no match 1347 abc 1348 abbbbbc 1349 1350 /([^.]*)\.([^:]*):[T ]+(.*)/ 1351 track1.title:TBlah blah blah 1352 1353 /([^.]*)\.([^:]*):[T ]+(.*)/i 1354 track1.title:TBlah blah blah 1355 1356 /([^.]*)\.([^:]*):[t ]+(.*)/i 1357 track1.title:TBlah blah blah 1358 1359 /^[W-c]+$/ 1360 WXY_^abc 1361 \= Expect no match 1362 wxy 1363 1364 /^[W-c]+$/i 1365 WXY_^abc 1366 wxy_^ABC 1367 1368 /^[\x3f-\x5F]+$/i 1369 WXY_^abc 1370 wxy_^ABC 1371 1372 /^abc$/m 1373 abc 1374 qqq\nabc 1375 abc\nzzz 1376 qqq\nabc\nzzz 1377 1378 /^abc$/ 1379 abc 1380 \= Expect no match 1381 qqq\nabc 1382 abc\nzzz 1383 qqq\nabc\nzzz 1384 1385 /\Aabc\Z/m 1386 abc 1387 abc\n 1388 \= Expect no match 1389 qqq\nabc 1390 abc\nzzz 1391 qqq\nabc\nzzz 1392 1393 /\A(.)*\Z/s 1394 abc\ndef 1395 1396 /\A(.)*\Z/m 1397 \= Expect no match 1398 abc\ndef 1399 1400 /(?:b)|(?::+)/ 1401 b::c 1402 c::b 1403 1404 /[-az]+/ 1405 az- 1406 \= Expect no match 1407 b 1408 1409 /[az-]+/ 1410 za- 1411 \= Expect no match 1412 b 1413 1414 /[a\-z]+/ 1415 a-z 1416 \= Expect no match 1417 b 1418 1419 /[a-z]+/ 1420 abcdxyz 1421 1422 /[\d-]+/ 1423 12-34 1424 \= Expect no match 1425 aaa 1426 1427 /\x5c/ 1428 \\ 1429 1430 /\x20Z/ 1431 the Zoo 1432 \= Expect no match 1433 Zulu 1434 1435 /(abc)\1/i 1436 abcabc 1437 ABCabc 1438 abcABC 1439 1440 /abc$/ 1441 abc 1442 abc\n 1443 \= Expect no match 1444 abc\ndef 1445 1446 /(abc)\123/ 1447 abc\x53 1448 1449 /(abc)\223/ 1450 abc\x93 1451 1452 /(abc)\323/ 1453 abc\xd3 1454 1455 /(abc)\100/ 1456 abc\x40 1457 abc\100 1458 1459 /(abc)\1000/ 1460 abc\x400 1461 abc\x40\x30 1462 abc\1000 1463 abc\100\x30 1464 abc\100\060 1465 abc\100\60 1466 1467 /^(A)(B)(C)(D)(E)(F)(G)(H)(I)\8\9$/ 1468 ABCDEFGHIHI 1469 1470 /^[A\8B\9C]+$/ 1471 A8B9C 1472 \= Expect no match 1473 A8B9C\x00 1474 1475 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\12\123/ 1476 abcdefghijkllS 1477 1478 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12\123/ 1479 abcdefghijk\12S 1480 1481 /a{0}bc/ 1482 bc 1483 1484 /(a|(bc)){0,0}?xyz/ 1485 xyz 1486 1487 /abc[\10]de/ 1488 abc\010de 1489 1490 /abc[\1]de/ 1491 abc\1de 1492 1493 /(abc)[\1]de/ 1494 abc\1de 1495 1496 /(?s)a.b/ 1497 a\nb 1498 1499 /^([^a])([^\b])([^c]*)([^d]{3,4})/ 1500 baNOTccccd 1501 baNOTcccd 1502 baNOTccd 1503 bacccd 1504 \= Expect no match 1505 anything 1506 b\bc 1507 baccd 1508 1509 /[^a]/ 1510 Abc 1511 1512 /[^a]/i 1513 Abc 1514 1515 /[^a]+/ 1516 AAAaAbc 1517 1518 /[^a]+/i 1519 AAAaAbc 1520 1521 /[^a]+/ 1522 bbb\nccc 1523 1524 /[^k]$/ 1525 abc 1526 \= Expect no match 1527 abk 1528 1529 /[^k]{2,3}$/ 1530 abc 1531 kbc 1532 kabc 1533 \= Expect no match 1534 abk 1535 akb 1536 akk 1537 1538 /^\d{8,}\@.+[^k]$/ 1539 12345678\@a.b.c.d 1540 123456789\@x.y.z 1541 \= Expect no match 1542 12345678\@x.y.uk 1543 1234567\@a.b.c.d 1544 1545 /(a)\1{8,}/ 1546 aaaaaaaaa 1547 aaaaaaaaaa 1548 \= Expect no match 1549 aaaaaaa 1550 1551 /[^a]/ 1552 aaaabcd 1553 aaAabcd 1554 1555 /[^a]/i 1556 aaaabcd 1557 aaAabcd 1558 1559 /[^az]/ 1560 aaaabcd 1561 aaAabcd 1562 1563 /[^az]/i 1564 aaaabcd 1565 aaAabcd 1566 1567 /\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\040\041\042\043\044\045\046\047\050\051\052\053\054\055\056\057\060\061\062\063\064\065\066\067\070\071\072\073\074\075\076\077\100\101\102\103\104\105\106\107\110\111\112\113\114\115\116\117\120\121\122\123\124\125\126\127\130\131\132\133\134\135\136\137\140\141\142\143\144\145\146\147\150\151\152\153\154\155\156\157\160\161\162\163\164\165\166\167\170\171\172\173\174\175\176\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377/ 1568 \000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\040\041\042\043\044\045\046\047\050\051\052\053\054\055\056\057\060\061\062\063\064\065\066\067\070\071\072\073\074\075\076\077\100\101\102\103\104\105\106\107\110\111\112\113\114\115\116\117\120\121\122\123\124\125\126\127\130\131\132\133\134\135\136\137\140\141\142\143\144\145\146\147\150\151\152\153\154\155\156\157\160\161\162\163\164\165\166\167\170\171\172\173\174\175\176\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377 1569 1570 /P[^*]TAIRE[^*]{1,6}?LL/ 1571 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 1572 1573 /P[^*]TAIRE[^*]{1,}?LL/ 1574 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 1575 1576 /(\.\d\d[1-9]?)\d+/ 1577 1.230003938 1578 1.875000282 1579 1.235 1580 1581 /(\.\d\d((?=0)|\d(?=\d)))/ 1582 1.230003938 1583 1.875000282 1584 \= Expect no match 1585 1.235 1586 1587 /a(?)b/ 1588 ab 1589 1590 /\b(foo)\s+(\w+)/i 1591 Food is on the foo table 1592 1593 /foo(.*)bar/ 1594 The food is under the bar in the barn. 1595 1596 /foo(.*?)bar/ 1597 The food is under the bar in the barn. 1598 1599 /(.*)(\d*)/ 1600 I have 2 numbers: 53147 1601 1602 /(.*)(\d+)/ 1603 I have 2 numbers: 53147 1604 1605 /(.*?)(\d*)/ 1606 I have 2 numbers: 53147 1607 1608 /(.*?)(\d+)/ 1609 I have 2 numbers: 53147 1610 1611 /(.*)(\d+)$/ 1612 I have 2 numbers: 53147 1613 1614 /(.*?)(\d+)$/ 1615 I have 2 numbers: 53147 1616 1617 /(.*)\b(\d+)$/ 1618 I have 2 numbers: 53147 1619 1620 /(.*\D)(\d+)$/ 1621 I have 2 numbers: 53147 1622 1623 /^\D*(?!123)/ 1624 ABC123 1625 1626 /^(\D*)(?=\d)(?!123)/ 1627 ABC445 1628 \= Expect no match 1629 ABC123 1630 1631 /^[W-]46]/ 1632 W46]789 1633 -46]789 1634 \= Expect no match 1635 Wall 1636 Zebra 1637 42 1638 [abcd] 1639 ]abcd[ 1640 1641 /^[W-\]46]/ 1642 W46]789 1643 Wall 1644 Zebra 1645 Xylophone 1646 42 1647 [abcd] 1648 ]abcd[ 1649 \\backslash 1650 \= Expect no match 1651 -46]789 1652 well 1653 1654 /\d\d\/\d\d\/\d\d\d\d/ 1655 01/01/2000 1656 1657 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/ 1658 word cat dog elephant mussel cow horse canary baboon snake shark otherword 1659 \= Expect no match 1660 word cat dog elephant mussel cow horse canary baboon snake shark 1661 1662 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/ 1663 \= Expect no match 1664 word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope 1665 1666 /^(a){0,0}/ 1667 bcd 1668 abc 1669 aab 1670 1671 /^(a){0,1}/ 1672 bcd 1673 abc 1674 aab 1675 1676 /^(a){0,2}/ 1677 bcd 1678 abc 1679 aab 1680 1681 /^(a){0,3}/ 1682 bcd 1683 abc 1684 aab 1685 aaa 1686 1687 /^(a){0,}/ 1688 bcd 1689 abc 1690 aab 1691 aaa 1692 aaaaaaaa 1693 1694 /^(a){1,1}/ 1695 abc 1696 aab 1697 \= Expect no match 1698 bcd 1699 1700 /^(a){1,2}/ 1701 abc 1702 aab 1703 \= Expect no match 1704 bcd 1705 1706 /^(a){1,3}/ 1707 abc 1708 aab 1709 aaa 1710 \= Expect no match 1711 bcd 1712 1713 /^(a){1,}/ 1714 abc 1715 aab 1716 aaa 1717 aaaaaaaa 1718 \= Expect no match 1719 bcd 1720 1721 /.*\.gif/ 1722 borfle\nbib.gif\nno 1723 1724 /.{0,}\.gif/ 1725 borfle\nbib.gif\nno 1726 1727 /.*\.gif/m 1728 borfle\nbib.gif\nno 1729 1730 /.*\.gif/s 1731 borfle\nbib.gif\nno 1732 1733 /.*\.gif/ms 1734 borfle\nbib.gif\nno 1735 1736 /.*$/ 1737 borfle\nbib.gif\nno 1738 1739 /.*$/m 1740 borfle\nbib.gif\nno 1741 1742 /.*$/s 1743 borfle\nbib.gif\nno 1744 1745 /.*$/ms 1746 borfle\nbib.gif\nno 1747 1748 /.*$/ 1749 borfle\nbib.gif\nno\n 1750 1751 /.*$/m 1752 borfle\nbib.gif\nno\n 1753 1754 /.*$/s 1755 borfle\nbib.gif\nno\n 1756 1757 /.*$/ms 1758 borfle\nbib.gif\nno\n 1759 1760 /(.*X|^B)/ 1761 abcde\n1234Xyz 1762 BarFoo 1763 \= Expect no match 1764 abcde\nBar 1765 1766 /(.*X|^B)/m 1767 abcde\n1234Xyz 1768 BarFoo 1769 abcde\nBar 1770 1771 /(.*X|^B)/s 1772 abcde\n1234Xyz 1773 BarFoo 1774 \= Expect no match 1775 abcde\nBar 1776 1777 /(.*X|^B)/ms 1778 abcde\n1234Xyz 1779 BarFoo 1780 abcde\nBar 1781 1782 /(?s)(.*X|^B)/ 1783 abcde\n1234Xyz 1784 BarFoo 1785 \= Expect no match 1786 abcde\nBar 1787 1788 /(?s:.*X|^B)/ 1789 abcde\n1234Xyz 1790 BarFoo 1791 \= Expect no match 1792 abcde\nBar 1793 1794 /^.*B/ 1795 \= Expect no match 1796 abc\nB 1797 1798 /(?s)^.*B/ 1799 abc\nB 1800 1801 /(?m)^.*B/ 1802 abc\nB 1803 1804 /(?ms)^.*B/ 1805 abc\nB 1806 1807 /(?ms)^B/ 1808 abc\nB 1809 1810 /(?s)B$/ 1811 B\n 1812 1813 /^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/ 1814 123456654321 1815 1816 /^\d\d\d\d\d\d\d\d\d\d\d\d/ 1817 123456654321 1818 1819 /^[\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d]/ 1820 123456654321 1821 1822 /^[abc]{12}/ 1823 abcabcabcabc 1824 1825 /^[a-c]{12}/ 1826 abcabcabcabc 1827 1828 /^(a|b|c){12}/ 1829 abcabcabcabc 1830 1831 /^[abcdefghijklmnopqrstuvwxy0123456789]/ 1832 n 1833 \= Expect no match 1834 z 1835 1836 /abcde{0,0}/ 1837 abcd 1838 \= Expect no match 1839 abce 1840 1841 /ab[cd]{0,0}e/ 1842 abe 1843 \= Expect no match 1844 abcde 1845 1846 /ab(c){0,0}d/ 1847 abd 1848 \= Expect no match 1849 abcd 1850 1851 /a(b*)/ 1852 a 1853 ab 1854 abbbb 1855 \= Expect no match 1856 bbbbb 1857 1858 /ab\d{0}e/ 1859 abe 1860 \= Expect no match 1861 ab1e 1862 1863 /"([^\\"]+|\\.)*"/ 1864 the \"quick\" brown fox 1865 \"the \\\"quick\\\" brown fox\" 1866 1867 /.*?/g,aftertext 1868 abc 1869 1870 /\b/g,aftertext 1871 abc 1872 1873 /\b/g,aftertext 1874 abc 1875 1876 //g 1877 abc 1878 1879 /<tr([\w\W\s\d][^<>]{0,})><TD([\w\W\s\d][^<>]{0,})>([\d]{0,}\.)(.*)((<BR>([\w\W\s\d][^<>]{0,})|[\s]{0,}))<\/a><\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><\/TR>/is 1880 <TR BGCOLOR='#DBE9E9'><TD align=left valign=top>43.<a href='joblist.cfm?JobID=94 6735&Keyword='>Word Processor<BR>(N-1286)</a></TD><TD align=left valign=top>Lega lstaff.com</TD><TD align=left valign=top>CA - Statewide</TD></TR> 1881 1882 /a[^a]b/ 1883 acb 1884 a\nb 1885 1886 /a.b/ 1887 acb 1888 \= Expect no match 1889 a\nb 1890 1891 /a[^a]b/s 1892 acb 1893 a\nb 1894 1895 /a.b/s 1896 acb 1897 a\nb 1898 1899 /^(b+?|a){1,2}?c/ 1900 bac 1901 bbac 1902 bbbac 1903 bbbbac 1904 bbbbbac 1905 1906 /^(b+|a){1,2}?c/ 1907 bac 1908 bbac 1909 bbbac 1910 bbbbac 1911 bbbbbac 1912 1913 /(?!\A)x/m 1914 a\bx\n 1915 a\nx\n 1916 \= Expect no match 1917 x\nb\n 1918 1919 /(A|B)*?CD/ 1920 CD 1921 1922 /(A|B)*CD/ 1923 CD 1924 1925 /(AB)*?\1/ 1926 ABABAB 1927 1928 /(AB)*\1/ 1929 ABABAB 1930 1931 /(?<!bar)foo/ 1932 foo 1933 catfood 1934 arfootle 1935 rfoosh 1936 \= Expect no match 1937 barfoo 1938 towbarfoo 1939 1940 /\w{3}(?<!bar)foo/ 1941 catfood 1942 \= Expect no match 1943 foo 1944 barfoo 1945 towbarfoo 1946 1947 /(?<=(foo)a)bar/ 1948 fooabar 1949 \= Expect no match 1950 bar 1951 foobbar 1952 1953 /\Aabc\z/m 1954 abc 1955 \= Expect no match 1956 abc\n 1957 qqq\nabc 1958 abc\nzzz 1959 qqq\nabc\nzzz 1960 1961 "(?>.*/)foo" 1962 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo 1963 \= Expect no match 1964 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/ 1965 1966 /(?>(\.\d\d[1-9]?))\d+/ 1967 1.230003938 1968 1.875000282 1969 \= Expect no match 1970 1.235 1971 1972 /^((?>\w+)|(?>\s+))*$/ 1973 now is the time for all good men to come to the aid of the party 1974 \= Expect no match 1975 this is not a line with only words and spaces! 1976 1977 /(\d+)(\w)/ 1978 12345a 1979 12345+ 1980 1981 /((?>\d+))(\w)/ 1982 12345a 1983 \= Expect no match 1984 12345+ 1985 1986 /(?>a+)b/ 1987 aaab 1988 1989 /((?>a+)b)/ 1990 aaab 1991 1992 /(?>(a+))b/ 1993 aaab 1994 1995 /(?>b)+/ 1996 aaabbbccc 1997 1998 /(?>a+|b+|c+)*c/ 1999 aaabbbbccccd 2000 2001 /((?>[^()]+)|\([^()]*\))+/ 2002 ((abc(ade)ufh()()x 2003 2004 /\(((?>[^()]+)|\([^()]+\))+\)/ 2005 (abc) 2006 (abc(def)xyz) 2007 \= Expect no match 2008 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 2009 2010 /a(?-i)b/i 2011 ab 2012 Ab 2013 \= Expect no match 2014 aB 2015 AB 2016 2017 /(a (?x)b c)d e/ 2018 a bcd e 2019 \= Expect no match 2020 a b cd e 2021 abcd e 2022 a bcde 2023 2024 /(a b(?x)c d (?-x)e f)/ 2025 a bcde f 2026 \= Expect no match 2027 abcdef 2028 2029 /(a(?i)b)c/ 2030 abc 2031 aBc 2032 \= Expect no match 2033 abC 2034 aBC 2035 Abc 2036 ABc 2037 ABC 2038 AbC 2039 2040 /a(?i:b)c/ 2041 abc 2042 aBc 2043 \= Expect no match 2044 ABC 2045 abC 2046 aBC 2047 2048 /a(?i:b)*c/ 2049 aBc 2050 aBBc 2051 \= Expect no match 2052 aBC 2053 aBBC 2054 2055 /a(?=b(?i)c)\w\wd/ 2056 abcd 2057 abCd 2058 \= Expect no match 2059 aBCd 2060 abcD 2061 2062 /(?s-i:more.*than).*million/i 2063 more than million 2064 more than MILLION 2065 more \n than Million 2066 \= Expect no match 2067 MORE THAN MILLION 2068 more \n than \n million 2069 2070 /(?:(?s-i)more.*than).*million/i 2071 more than million 2072 more than MILLION 2073 more \n than Million 2074 \= Expect no match 2075 MORE THAN MILLION 2076 more \n than \n million 2077 2078 /(?>a(?i)b+)+c/ 2079 abc 2080 aBbc 2081 aBBc 2082 \= Expect no match 2083 Abc 2084 abAb 2085 abbC 2086 2087 /(?=a(?i)b)\w\wc/ 2088 abc 2089 aBc 2090 \= Expect no match 2091 Ab 2092 abC 2093 aBC 2094 2095 /(?<=a(?i)b)(\w\w)c/ 2096 abxxc 2097 aBxxc 2098 \= Expect no match 2099 Abxxc 2100 ABxxc 2101 abxxC 2102 2103 /(?:(a)|b)(?(1)A|B)/ 2104 aA 2105 bB 2106 \= Expect no match 2107 aB 2108 bA 2109 2110 /^(a)?(?(1)a|b)+$/ 2111 aa 2112 b 2113 bb 2114 \= Expect no match 2115 ab 2116 2117 # Perl gets this next one wrong if the pattern ends with $; in that case it 2118 # fails to match "12". 2119 2120 /^(?(?=abc)\w{3}:|\d\d)/ 2121 abc: 2122 12 2123 123 2124 \= Expect no match 2125 xyz 2126 2127 /^(?(?!abc)\d\d|\w{3}:)$/ 2128 abc: 2129 12 2130 \= Expect no match 2131 123 2132 xyz 2133 2134 /(?(?<=foo)bar|cat)/ 2135 foobar 2136 cat 2137 fcat 2138 focat 2139 \= Expect no match 2140 foocat 2141 2142 /(?(?<!foo)cat|bar)/ 2143 foobar 2144 cat 2145 fcat 2146 focat 2147 \= Expect no match 2148 foocat 2149 2150 /( \( )? [^()]+ (?(1) \) |) /x 2151 abcd 2152 (abcd) 2153 the quick (abcd) fox 2154 (abcd 2155 2156 /( \( )? [^()]+ (?(1) \) ) /x 2157 abcd 2158 (abcd) 2159 the quick (abcd) fox 2160 (abcd 2161 2162 /^(?(2)a|(1)(2))+$/ 2163 12 2164 12a 2165 12aa 2166 \= Expect no match 2167 1234 2168 2169 /((?i)blah)\s+\1/ 2170 blah blah 2171 BLAH BLAH 2172 Blah Blah 2173 blaH blaH 2174 \= Expect no match 2175 blah BLAH 2176 Blah blah 2177 blaH blah 2178 2179 /((?i)blah)\s+(?i:\1)/ 2180 blah blah 2181 BLAH BLAH 2182 Blah Blah 2183 blaH blaH 2184 blah BLAH 2185 Blah blah 2186 blaH blah 2187 2188 /((?i)blah)\s+(?m)A(?i:\1)/ 2189 blah ABLAH 2190 \= Expect no match 2191 blah aBLAH 2192 2193 /(?>a*)*/ 2194 a 2195 aa 2196 aaaa 2197 2198 /(abc|)+/ 2199 abc 2200 abcabc 2201 abcabcabc 2202 xyz 2203 2204 /([a]*)*/ 2205 a 2206 aaaaa 2207 2208 /([ab]*)*/ 2209 a 2210 b 2211 ababab 2212 aaaabcde 2213 bbbb 2214 2215 /([^a]*)*/ 2216 b 2217 bbbb 2218 aaa 2219 2220 /([^ab]*)*/ 2221 cccc 2222 abab 2223 2224 /([a]*?)*/ 2225 a 2226 aaaa 2227 2228 /([ab]*?)*/ 2229 a 2230 b 2231 abab 2232 baba 2233 2234 /([^a]*?)*/ 2235 b 2236 bbbb 2237 aaa 2238 2239 /([^ab]*?)*/ 2240 c 2241 cccc 2242 baba 2243 2244 /(?>a*)*/ 2245 a 2246 aaabcde 2247 2248 /((?>a*))*/ 2249 aaaaa 2250 aabbaa 2251 2252 /((?>a*?))*/ 2253 aaaaa 2254 aabbaa 2255 2256 /(?(?=[^a-z]+[a-z]) \d{2}-[a-z]{3}-\d{2} | \d{2}-\d{2}-\d{2} ) /x 2257 12-sep-98 2258 12-09-98 2259 \= Expect no match 2260 sep-12-98 2261 2262 /(?<=(foo))bar\1/ 2263 foobarfoo 2264 foobarfootling 2265 \= Expect no match 2266 foobar 2267 barfoo 2268 2269 /(?i:saturday|sunday)/ 2270 saturday 2271 sunday 2272 Saturday 2273 Sunday 2274 SATURDAY 2275 SUNDAY 2276 SunDay 2277 2278 /(a(?i)bc|BB)x/ 2279 abcx 2280 aBCx 2281 bbx 2282 BBx 2283 \= Expect no match 2284 abcX 2285 aBCX 2286 bbX 2287 BBX 2288 2289 /^([ab](?i)[cd]|[ef])/ 2290 ac 2291 aC 2292 bD 2293 elephant 2294 Europe 2295 frog 2296 France 2297 \= Expect no match 2298 Africa 2299 2300 /^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/ 2301 ab 2302 aBd 2303 xy 2304 xY 2305 zebra 2306 Zambesi 2307 \= Expect no match 2308 aCD 2309 XY 2310 2311 /(?<=foo\n)^bar/m 2312 foo\nbar 2313 \= Expect no match 2314 bar 2315 baz\nbar 2316 2317 /(?<=(?<!foo)bar)baz/ 2318 barbaz 2319 barbarbaz 2320 koobarbaz 2321 \= Expect no match 2322 baz 2323 foobarbaz 2324 2325 # The cases of aaaa and aaaaaa are missed out below because Perl does things 2326 # differently. We know that odd, and maybe incorrect, things happen with 2327 # recursive references in Perl, as far as 5.11.3 - see some stuff in test #2. 2328 2329 /^(a\1?){4}$/ 2330 aaaaa 2331 aaaaaaa 2332 aaaaaaaaaa 2333 \= Expect no match 2334 a 2335 aa 2336 aaa 2337 aaaaaaaa 2338 aaaaaaaaa 2339 aaaaaaaaaaa 2340 aaaaaaaaaaaa 2341 aaaaaaaaaaaaa 2342 aaaaaaaaaaaaaa 2343 aaaaaaaaaaaaaaa 2344 aaaaaaaaaaaaaaaa 2345 2346 /^(a\1?)(a\1?)(a\2?)(a\3?)$/ 2347 aaaa 2348 aaaaa 2349 aaaaaa 2350 aaaaaaa 2351 aaaaaaaaaa 2352 \= Expect no match 2353 a 2354 aa 2355 aaa 2356 aaaaaaaa 2357 aaaaaaaaa 2358 aaaaaaaaaaa 2359 aaaaaaaaaaaa 2360 aaaaaaaaaaaaa 2361 aaaaaaaaaaaaaa 2362 aaaaaaaaaaaaaaa 2363 aaaaaaaaaaaaaaaa 2364 2365 # The following tests are taken from the Perl 5.005 test suite; some of them 2366 # are compatible with 5.004, but I'd rather not have to sort them out. 2367 2368 /abc/ 2369 abc 2370 xabcy 2371 ababc 2372 \= Expect no match 2373 xbc 2374 axc 2375 abx 2376 2377 /ab*c/ 2378 abc 2379 2380 /ab*bc/ 2381 abc 2382 abbc 2383 abbbbc 2384 2385 /.{1}/ 2386 abbbbc 2387 2388 /.{3,4}/ 2389 abbbbc 2390 2391 /ab{0,}bc/ 2392 abbbbc 2393 2394 /ab+bc/ 2395 abbc 2396 \= Expect no match 2397 abc 2398 abq 2399 2400 /ab{1,}bc/ 2401 2402 /ab+bc/ 2403 abbbbc 2404 2405 /ab{1,}bc/ 2406 abbbbc 2407 2408 /ab{1,3}bc/ 2409 abbbbc 2410 2411 /ab{3,4}bc/ 2412 abbbbc 2413 2414 /ab{4,5}bc/ 2415 \= Expect no match 2416 abq 2417 abbbbc 2418 2419 /ab?bc/ 2420 abbc 2421 abc 2422 2423 /ab{0,1}bc/ 2424 abc 2425 2426 /ab?bc/ 2427 2428 /ab?c/ 2429 abc 2430 2431 /ab{0,1}c/ 2432 abc 2433 2434 /^abc$/ 2435 abc 2436 \= Expect no match 2437 abbbbc 2438 abcc 2439 2440 /^abc/ 2441 abcc 2442 2443 /^abc$/ 2444 2445 /abc$/ 2446 aabc 2447 \= Expect no match 2448 aabcd 2449 2450 /^/ 2451 abc 2452 2453 /$/ 2454 abc 2455 2456 /a.c/ 2457 abc 2458 axc 2459 2460 /a.*c/ 2461 axyzc 2462 2463 /a[bc]d/ 2464 abd 2465 \= Expect no match 2466 axyzd 2467 abc 2468 2469 /a[b-d]e/ 2470 ace 2471 2472 /a[b-d]/ 2473 aac 2474 2475 /a[-b]/ 2476 a- 2477 2478 /a[b-]/ 2479 a- 2480 2481 /a]/ 2482 a] 2483 2484 /a[]]b/ 2485 a]b 2486 2487 /a[^bc]d/ 2488 aed 2489 \= Expect no match 2490 abd 2491 abd 2492 2493 /a[^-b]c/ 2494 adc 2495 2496 /a[^]b]c/ 2497 adc 2498 a-c 2499 \= Expect no match 2500 a]c 2501 2502 /\ba\b/ 2503 a- 2504 -a 2505 -a- 2506 2507 /\by\b/ 2508 \= Expect no match 2509 xy 2510 yz 2511 xyz 2512 2513 /\Ba\B/ 2514 \= Expect no match 2515 a- 2516 -a 2517 -a- 2518 2519 /\By\b/ 2520 xy 2521 2522 /\by\B/ 2523 yz 2524 2525 /\By\B/ 2526 xyz 2527 2528 /\w/ 2529 a 2530 2531 /\W/ 2532 - 2533 \= Expect no match 2534 a 2535 2536 /a\sb/ 2537 a b 2538 2539 /a\Sb/ 2540 a-b 2541 \= Expect no match 2542 a b 2543 2544 /\d/ 2545 1 2546 2547 /\D/ 2548 - 2549 \= Expect no match 2550 1 2551 2552 /[\w]/ 2553 a 2554 2555 /[\W]/ 2556 - 2557 \= Expect no match 2558 a 2559 2560 /a[\s]b/ 2561 a b 2562 2563 /a[\S]b/ 2564 a-b 2565 \= Expect no match 2566 a b 2567 2568 /[\d]/ 2569 1 2570 2571 /[\D]/ 2572 - 2573 \= Expect no match 2574 1 2575 2576 /ab|cd/ 2577 abc 2578 abcd 2579 2580 /()ef/ 2581 def 2582 2583 /$b/ 2584 2585 /a\(b/ 2586 a(b 2587 2588 /a\(*b/ 2589 ab 2590 a((b 2591 2592 /a\\b/ 2593 a\\b 2594 2595 /((a))/ 2596 abc 2597 2598 /(a)b(c)/ 2599 abc 2600 2601 /a+b+c/ 2602 aabbabc 2603 2604 /a{1,}b{1,}c/ 2605 aabbabc 2606 2607 /a.+?c/ 2608 abcabc 2609 2610 /(a+|b)*/ 2611 ab 2612 2613 /(a+|b){0,}/ 2614 ab 2615 2616 /(a+|b)+/ 2617 ab 2618 2619 /(a+|b){1,}/ 2620 ab 2621 2622 /(a+|b)?/ 2623 ab 2624 2625 /(a+|b){0,1}/ 2626 ab 2627 2628 /[^ab]*/ 2629 cde 2630 2631 /abc/ 2632 \= Expect no match 2633 b 2634 2635 /a*/ 2636 \ 2637 2638 /([abc])*d/ 2639 abbbcd 2640 2641 /([abc])*bcd/ 2642 abcd 2643 2644 /a|b|c|d|e/ 2645 e 2646 2647 /(a|b|c|d|e)f/ 2648 ef 2649 2650 /abcd*efg/ 2651 abcdefg 2652 2653 /ab*/ 2654 xabyabbbz 2655 xayabbbz 2656 2657 /(ab|cd)e/ 2658 abcde 2659 2660 /[abhgefdc]ij/ 2661 hij 2662 2663 /^(ab|cd)e/ 2664 2665 /(abc|)ef/ 2666 abcdef 2667 2668 /(a|b)c*d/ 2669 abcd 2670 2671 /(ab|ab*)bc/ 2672 abc 2673 2674 /a([bc]*)c*/ 2675 abc 2676 2677 /a([bc]*)(c*d)/ 2678 abcd 2679 2680 /a([bc]+)(c*d)/ 2681 abcd 2682 2683 /a([bc]*)(c+d)/ 2684 abcd 2685 2686 /a[bcd]*dcdcde/ 2687 adcdcde 2688 2689 /a[bcd]+dcdcde/ 2690 \= Expect no match 2691 abcde 2692 adcdcde 2693 2694 /(ab|a)b*c/ 2695 abc 2696 2697 /((a)(b)c)(d)/ 2698 abcd 2699 2700 /[a-zA-Z_][a-zA-Z0-9_]*/ 2701 alpha 2702 2703 /^a(bc+|b[eh])g|.h$/ 2704 abh 2705 2706 /(bc+d$|ef*g.|h?i(j|k))/ 2707 effgz 2708 ij 2709 reffgz 2710 \= Expect no match 2711 effg 2712 bcdd 2713 2714 /((((((((((a))))))))))/ 2715 a 2716 2717 /((((((((((a))))))))))\10/ 2718 aa 2719 2720 /(((((((((a)))))))))/ 2721 a 2722 2723 /multiple words of text/ 2724 \= Expect no match 2725 aa 2726 uh-uh 2727 2728 /multiple words/ 2729 multiple words, yeah 2730 2731 /(.*)c(.*)/ 2732 abcde 2733 2734 /\((.*), (.*)\)/ 2735 (a, b) 2736 2737 /[k]/ 2738 2739 /abcd/ 2740 abcd 2741 2742 /a(bc)d/ 2743 abcd 2744 2745 /a[-]?c/ 2746 ac 2747 2748 /(abc)\1/ 2749 abcabc 2750 2751 /([a-c]*)\1/ 2752 abcabc 2753 2754 /(a)|\1/ 2755 a 2756 ab 2757 \= Expect no match 2758 x 2759 2760 /(([a-c])b*?\2)*/ 2761 ababbbcbc 2762 2763 /(([a-c])b*?\2){3}/ 2764 ababbbcbc 2765 2766 /((\3|b)\2(a)x)+/ 2767 aaaxabaxbaaxbbax 2768 2769 /((\3|b)\2(a)){2,}/ 2770 bbaababbabaaaaabbaaaabba 2771 2772 /abc/i 2773 ABC 2774 XABCY 2775 ABABC 2776 \= Expect no match 2777 aaxabxbaxbbx 2778 XBC 2779 AXC 2780 ABX 2781 2782 /ab*c/i 2783 ABC 2784 2785 /ab*bc/i 2786 ABC 2787 ABBC 2788 2789 /ab*?bc/i 2790 ABBBBC 2791 2792 /ab{0,}?bc/i 2793 ABBBBC 2794 2795 /ab+?bc/i 2796 ABBC 2797 2798 /ab+bc/i 2799 \= Expect no match 2800 ABC 2801 ABQ 2802 2803 /ab{1,}bc/i 2804 2805 /ab+bc/i 2806 ABBBBC 2807 2808 /ab{1,}?bc/i 2809 ABBBBC 2810 2811 /ab{1,3}?bc/i 2812 ABBBBC 2813 2814 /ab{3,4}?bc/i 2815 ABBBBC 2816 2817 /ab{4,5}?bc/i 2818 \= Expect no match 2819 ABQ 2820 ABBBBC 2821 2822 /ab??bc/i 2823 ABBC 2824 ABC 2825 2826 /ab{0,1}?bc/i 2827 ABC 2828 2829 /ab??bc/i 2830 2831 /ab??c/i 2832 ABC 2833 2834 /ab{0,1}?c/i 2835 ABC 2836 2837 /^abc$/i 2838 ABC 2839 \= Expect no match 2840 ABBBBC 2841 ABCC 2842 2843 /^abc/i 2844 ABCC 2845 2846 /^abc$/i 2847 2848 /abc$/i 2849 AABC 2850 2851 /^/i 2852 ABC 2853 2854 /$/i 2855 ABC 2856 2857 /a.c/i 2858 ABC 2859 AXC 2860 2861 /a.*?c/i 2862 AXYZC 2863 2864 /a.*c/i 2865 AABC 2866 \= Expect no match 2867 AXYZD 2868 2869 /a[bc]d/i 2870 ABD 2871 2872 /a[b-d]e/i 2873 ACE 2874 \= Expect no match 2875 ABC 2876 ABD 2877 2878 /a[b-d]/i 2879 AAC 2880 2881 /a[-b]/i 2882 A- 2883 2884 /a[b-]/i 2885 A- 2886 2887 /a]/i 2888 A] 2889 2890 /a[]]b/i 2891 A]B 2892 2893 /a[^bc]d/i 2894 AED 2895 2896 /a[^-b]c/i 2897 ADC 2898 \= Expect no match 2899 ABD 2900 A-C 2901 2902 /a[^]b]c/i 2903 ADC 2904 2905 /ab|cd/i 2906 ABC 2907 ABCD 2908 2909 /()ef/i 2910 DEF 2911 2912 /$b/i 2913 \= Expect no match 2914 A]C 2915 B 2916 2917 /a\(b/i 2918 A(B 2919 2920 /a\(*b/i 2921 AB 2922 A((B 2923 2924 /a\\b/i 2925 A\\b 2926 a\\B 2927 2928 /((a))/i 2929 ABC 2930 2931 /(a)b(c)/i 2932 ABC 2933 2934 /a+b+c/i 2935 AABBABC 2936 2937 /a{1,}b{1,}c/i 2938 AABBABC 2939 2940 /a.+?c/i 2941 ABCABC 2942 2943 /a.*?c/i 2944 ABCABC 2945 2946 /a.{0,5}?c/i 2947 ABCABC 2948 2949 /(a+|b)*/i 2950 AB 2951 2952 /(a+|b){0,}/i 2953 AB 2954 2955 /(a+|b)+/i 2956 AB 2957 2958 /(a+|b){1,}/i 2959 AB 2960 2961 /(a+|b)?/i 2962 AB 2963 2964 /(a+|b){0,1}/i 2965 AB 2966 2967 /(a+|b){0,1}?/i 2968 AB 2969 2970 /[^ab]*/i 2971 CDE 2972 2973 /([abc])*d/i 2974 ABBBCD 2975 2976 /([abc])*bcd/i 2977 ABCD 2978 2979 /a|b|c|d|e/i 2980 E 2981 2982 /(a|b|c|d|e)f/i 2983 EF 2984 2985 /abcd*efg/i 2986 ABCDEFG 2987 2988 /ab*/i 2989 XABYABBBZ 2990 XAYABBBZ 2991 2992 /(ab|cd)e/i 2993 ABCDE 2994 2995 /[abhgefdc]ij/i 2996 HIJ 2997 2998 /^(ab|cd)e/i 2999 \= Expect no match 3000 ABCDE 3001 3002 /(abc|)ef/i 3003 ABCDEF 3004 3005 /(a|b)c*d/i 3006 ABCD 3007 3008 /(ab|ab*)bc/i 3009 ABC 3010 3011 /a([bc]*)c*/i 3012 ABC 3013 3014 /a([bc]*)(c*d)/i 3015 ABCD 3016 3017 /a([bc]+)(c*d)/i 3018 ABCD 3019 3020 /a([bc]*)(c+d)/i 3021 ABCD 3022 3023 /a[bcd]*dcdcde/i 3024 ADCDCDE 3025 3026 /a[bcd]+dcdcde/i 3027 3028 /(ab|a)b*c/i 3029 ABC 3030 3031 /((a)(b)c)(d)/i 3032 ABCD 3033 3034 /[a-zA-Z_][a-zA-Z0-9_]*/i 3035 ALPHA 3036 3037 /^a(bc+|b[eh])g|.h$/i 3038 ABH 3039 3040 /(bc+d$|ef*g.|h?i(j|k))/i 3041 EFFGZ 3042 IJ 3043 REFFGZ 3044 \= Expect no match 3045 ADCDCDE 3046 EFFG 3047 BCDD 3048 3049 /((((((((((a))))))))))/i 3050 A 3051 3052 /((((((((((a))))))))))\10/i 3053 AA 3054 3055 /(((((((((a)))))))))/i 3056 A 3057 3058 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))/i 3059 A 3060 3061 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/i 3062 C 3063 3064 /multiple words of text/i 3065 \= Expect no match 3066 AA 3067 UH-UH 3068 3069 /multiple words/i 3070 MULTIPLE WORDS, YEAH 3071 3072 /(.*)c(.*)/i 3073 ABCDE 3074 3075 /\((.*), (.*)\)/i 3076 (A, B) 3077 3078 /[k]/i 3079 3080 /abcd/i 3081 ABCD 3082 3083 /a(bc)d/i 3084 ABCD 3085 3086 /a[-]?c/i 3087 AC 3088 3089 /(abc)\1/i 3090 ABCABC 3091 3092 /([a-c]*)\1/i 3093 ABCABC 3094 3095 /a(?!b)./ 3096 abad 3097 3098 /a(?=d)./ 3099 abad 3100 3101 /a(?=c|d)./ 3102 abad 3103 3104 /a(?:b|c|d)(.)/ 3105 ace 3106 3107 /a(?:b|c|d)*(.)/ 3108 ace 3109 3110 /a(?:b|c|d)+?(.)/ 3111 ace 3112 acdbcdbe 3113 3114 /a(?:b|c|d)+(.)/ 3115 acdbcdbe 3116 3117 /a(?:b|c|d){2}(.)/ 3118 acdbcdbe 3119 3120 /a(?:b|c|d){4,5}(.)/ 3121 acdbcdbe 3122 3123 /a(?:b|c|d){4,5}?(.)/ 3124 acdbcdbe 3125 3126 /((foo)|(bar))*/ 3127 foobar 3128 3129 /a(?:b|c|d){6,7}(.)/ 3130 acdbcdbe 3131 3132 /a(?:b|c|d){6,7}?(.)/ 3133 acdbcdbe 3134 3135 /a(?:b|c|d){5,6}(.)/ 3136 acdbcdbe 3137 3138 /a(?:b|c|d){5,6}?(.)/ 3139 acdbcdbe 3140 3141 /a(?:b|c|d){5,7}(.)/ 3142 acdbcdbe 3143 3144 /a(?:b|c|d){5,7}?(.)/ 3145 acdbcdbe 3146 3147 /a(?:b|(c|e){1,2}?|d)+?(.)/ 3148 ace 3149 3150 /^(.+)?B/ 3151 AB 3152 3153 /^([^a-z])|(\^)$/ 3154 . 3155 3156 /^[<>]&/ 3157 <&OUT 3158 3159 /^(a\1?){4}$/ 3160 aaaaaaaaaa 3161 \= Expect no match 3162 AB 3163 aaaaaaaaa 3164 aaaaaaaaaaa 3165 3166 /^(a(?(1)\1)){4}$/ 3167 aaaaaaaaaa 3168 \= Expect no match 3169 aaaaaaaaa 3170 aaaaaaaaaaa 3171 3172 /(?:(f)(o)(o)|(b)(a)(r))*/ 3173 foobar 3174 3175 /(?<=a)b/ 3176 ab 3177 \= Expect no match 3178 cb 3179 b 3180 3181 /(?<!c)b/ 3182 ab 3183 b 3184 b 3185 3186 /(?:..)*a/ 3187 aba 3188 3189 /(?:..)*?a/ 3190 aba 3191 3192 /^(?:b|a(?=(.)))*\1/ 3193 abc 3194 3195 /^(){3,5}/ 3196 abc 3197 3198 /^(a+)*ax/ 3199 aax 3200 3201 /^((a|b)+)*ax/ 3202 aax 3203 3204 /^((a|bc)+)*ax/ 3205 aax 3206 3207 /(a|x)*ab/ 3208 cab 3209 3210 /(a)*ab/ 3211 cab 3212 3213 /(?:(?i)a)b/ 3214 ab 3215 3216 /((?i)a)b/ 3217 ab 3218 3219 /(?:(?i)a)b/ 3220 Ab 3221 3222 /((?i)a)b/ 3223 Ab 3224 3225 /(?:(?i)a)b/ 3226 \= Expect no match 3227 cb 3228 aB 3229 3230 /((?i)a)b/ 3231 3232 /(?i:a)b/ 3233 ab 3234 3235 /((?i:a))b/ 3236 ab 3237 3238 /(?i:a)b/ 3239 Ab 3240 3241 /((?i:a))b/ 3242 Ab 3243 3244 /(?i:a)b/ 3245 \= Expect no match 3246 aB 3247 aB 3248 3249 /((?i:a))b/ 3250 3251 /(?:(?-i)a)b/i 3252 ab 3253 3254 /((?-i)a)b/i 3255 ab 3256 3257 /(?:(?-i)a)b/i 3258 aB 3259 3260 /((?-i)a)b/i 3261 aB 3262 3263 /(?:(?-i)a)b/i 3264 aB 3265 \= Expect no match 3266 Ab 3267 AB 3268 3269 /(?-i:a)b/i 3270 ab 3271 3272 /((?-i:a))b/i 3273 ab 3274 3275 /(?-i:a)b/i 3276 aB 3277 3278 /((?-i:a))b/i 3279 aB 3280 3281 /(?-i:a)b/i 3282 \= Expect no match 3283 AB 3284 Ab 3285 3286 /((?-i:a))b/i 3287 3288 /(?-i:a)b/i 3289 aB 3290 3291 /((?-i:a))b/i 3292 aB 3293 3294 /(?-i:a)b/i 3295 \= Expect no match 3296 Ab 3297 AB 3298 3299 /((?-i:a))b/i 3300 3301 /((?-i:a.))b/i 3302 \= Expect no match 3303 AB 3304 a\nB 3305 3306 /((?s-i:a.))b/i 3307 a\nB 3308 3309 /(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))/ 3310 cabbbb 3311 3312 /(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/ 3313 caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 3314 3315 /(ab)\d\1/i 3316 Ab4ab 3317 ab4Ab 3318 3319 /foo\w*\d{4}baz/ 3320 foobar1234baz 3321 3322 /x(~~)*(?:(?:F)?)?/ 3323 x~~ 3324 3325 /^a(?#xxx){3}c/ 3326 aaac 3327 3328 /^a (?#xxx) (?#yyy) {3}c/x 3329 aaac 3330 3331 /(?<![cd])b/ 3332 \= Expect no match 3333 B\nB 3334 dbcb 3335 3336 /(?<![cd])[ab]/ 3337 dbaacb 3338 3339 /(?<!(c|d))b/ 3340 3341 /(?<!(c|d))[ab]/ 3342 dbaacb 3343 3344 /(?<!cd)[ab]/ 3345 cdaccb 3346 3347 /^(?:a?b?)*$/ 3348 \ 3349 a 3350 ab 3351 aaa 3352 \= Expect no match 3353 dbcb 3354 a-- 3355 aa-- 3356 3357 /((?s)^a(.))((?m)^b$)/ 3358 a\nb\nc\n 3359 3360 /((?m)^b$)/ 3361 a\nb\nc\n 3362 3363 /(?m)^b/ 3364 a\nb\n 3365 3366 /(?m)^(b)/ 3367 a\nb\n 3368 3369 /((?m)^b)/ 3370 a\nb\n 3371 3372 /\n((?m)^b)/ 3373 a\nb\n 3374 3375 /((?s).)c(?!.)/ 3376 a\nb\nc\n 3377 a\nb\nc\n 3378 3379 /((?s)b.)c(?!.)/ 3380 a\nb\nc\n 3381 a\nb\nc\n 3382 3383 /^b/ 3384 3385 /()^b/ 3386 \= Expect no match 3387 a\nb\nc\n 3388 a\nb\nc\n 3389 3390 /((?m)^b)/ 3391 a\nb\nc\n 3392 3393 /(x)?(?(1)a|b)/ 3394 \= Expect no match 3395 a 3396 a 3397 3398 /(x)?(?(1)b|a)/ 3399 a 3400 3401 /()?(?(1)b|a)/ 3402 a 3403 3404 /()(?(1)b|a)/ 3405 3406 /()?(?(1)a|b)/ 3407 a 3408 3409 /^(\()?blah(?(1)(\)))$/ 3410 (blah) 3411 blah 3412 \= Expect no match 3413 a 3414 blah) 3415 (blah 3416 3417 /^(\(+)?blah(?(1)(\)))$/ 3418 (blah) 3419 blah 3420 \= Expect no match 3421 blah) 3422 (blah 3423 3424 /(?(?!a)a|b)/ 3425 3426 /(?(?!a)b|a)/ 3427 a 3428 3429 /(?(?=a)b|a)/ 3430 \= Expect no match 3431 a 3432 a 3433 3434 /(?(?=a)a|b)/ 3435 a 3436 3437 /(?=(a+?))(\1ab)/ 3438 aaab 3439 3440 /^(?=(a+?))\1ab/ 3441 3442 /(\w+:)+/ 3443 one: 3444 3445 /$(?<=^(a))/ 3446 a 3447 3448 /(?=(a+?))(\1ab)/ 3449 aaab 3450 3451 /^(?=(a+?))\1ab/ 3452 \= Expect no match 3453 aaab 3454 aaab 3455 3456 /([\w:]+::)?(\w+)$/ 3457 abcd 3458 xy:z:::abcd 3459 3460 /^[^bcd]*(c+)/ 3461 aexycd 3462 3463 /(a*)b+/ 3464 caab 3465 3466 /([\w:]+::)?(\w+)$/ 3467 abcd 3468 xy:z:::abcd 3469 \= Expect no match 3470 abcd: 3471 abcd: 3472 3473 /^[^bcd]*(c+)/ 3474 aexycd 3475 3476 /(>a+)ab/ 3477 3478 /(?>a+)b/ 3479 aaab 3480 3481 /([[:]+)/ 3482 a:[b]: 3483 3484 /([[=]+)/ 3485 a=[b]= 3486 3487 /([[.]+)/ 3488 a.[b]. 3489 3490 /((?>a+)b)/ 3491 aaab 3492 3493 /(?>(a+))b/ 3494 aaab 3495 3496 /((?>[^()]+)|\([^()]*\))+/ 3497 ((abc(ade)ufh()()x 3498 3499 /a\Z/ 3500 \= Expect no match 3501 aaab 3502 a\nb\n 3503 3504 /b\Z/ 3505 a\nb\n 3506 3507 /b\z/ 3508 3509 /b\Z/ 3510 a\nb 3511 3512 /b\z/ 3513 a\nb 3514 3515 /^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/ 3516 a 3517 abc 3518 a-b 3519 0-9 3520 a.b 3521 5.6.7 3522 the.quick.brown.fox 3523 a100.b200.300c 3524 12-ab.1245 3525 \= Expect no match 3526 \ 3527 .a 3528 -a 3529 a- 3530 a. 3531 a_b 3532 a.- 3533 a.. 3534 ab..bc 3535 the.quick.brown.fox- 3536 the.quick.brown.fox. 3537 the.quick.brown.fox_ 3538 the.quick.brown.fox+ 3539 3540 /(?>.*)(?<=(abcd|wxyz))/ 3541 alphabetabcd 3542 endingwxyz 3543 \= Expect no match 3544 a rather long string that doesn't end with one of them 3545 3546 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/ 3547 word cat dog elephant mussel cow horse canary baboon snake shark otherword 3548 \= Expect no match 3549 word cat dog elephant mussel cow horse canary baboon snake shark 3550 3551 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/ 3552 \= Expect no match 3553 word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope 3554 3555 /(?<=\d{3}(?!999))foo/ 3556 999foo 3557 123999foo 3558 \= Expect no match 3559 123abcfoo 3560 3561 /(?<=(?!...999)\d{3})foo/ 3562 999foo 3563 123999foo 3564 \= Expect no match 3565 123abcfoo 3566 3567 /(?<=\d{3}(?!999)...)foo/ 3568 123abcfoo 3569 123456foo 3570 \= Expect no match 3571 123999foo 3572 3573 /(?<=\d{3}...)(?<!999)foo/ 3574 123abcfoo 3575 123456foo 3576 \= Expect no match 3577 123999foo 3578 3579 /<a[\s]+href[\s]*=[\s]* # find <a href= 3580 ([\"\'])? # find single or double quote 3581 (?(1) (.*?)\1 | ([^\s]+)) # if quote found, match up to next matching 3582 # quote, otherwise match up to next space 3583 /isx 3584 <a href=abcd xyz 3585 <a href=\"abcd xyz pqr\" cats 3586 <a href=\'abcd xyz pqr\' cats 3587 3588 /<a\s+href\s*=\s* # find <a href= 3589 (["'])? # find single or double quote 3590 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 3591 # quote, otherwise match up to next space 3592 /isx 3593 <a href=abcd xyz 3594 <a href=\"abcd xyz pqr\" cats 3595 <a href = \'abcd xyz pqr\' cats 3596 3597 /<a\s+href(?>\s*)=(?>\s*) # find <a href= 3598 (["'])? # find single or double quote 3599 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 3600 # quote, otherwise match up to next space 3601 /isx 3602 <a href=abcd xyz 3603 <a href=\"abcd xyz pqr\" cats 3604 <a href = \'abcd xyz pqr\' cats 3605 3606 /((Z)+|A)*/ 3607 ZABCDEFG 3608 3609 /(Z()|A)*/ 3610 ZABCDEFG 3611 3612 /(Z(())|A)*/ 3613 ZABCDEFG 3614 3615 /((?>Z)+|A)*/ 3616 ZABCDEFG 3617 3618 /((?>)+|A)*/ 3619 ZABCDEFG 3620 3621 /a*/g 3622 abbab 3623 3624 /[[:space:]]+/ 3625 > \x09\x0a\x0c\x0d\x0b< 3626 3627 /[[:blank:]]+/ 3628 > \x09\x0a\x0c\x0d\x0b< 3629 3630 /[\s]+/ 3631 > \x09\x0a\x0c\x0d\x0b< 3632 3633 /\s+/ 3634 > \x09\x0a\x0c\x0d\x0b< 3635 3636 /ab/x 3638 ab 3639 3640 /(?!\A)x/m 3641 a\nxb\n 3642 3643 /(?!^)x/m 3644 \= Expect no match 3645 a\nxb\n 3646 3647 /abc\Qabc\Eabc/ 3648 abcabcabc 3649 3650 /abc\Q(*+|\Eabc/ 3651 abc(*+|abc 3652 3653 / abc\Q abc\Eabc/x 3654 abc abcabc 3655 \= Expect no match 3656 abcabcabc 3657 3658 /abc#comment 3659 \Q#not comment 3660 literal\E/x 3661 abc#not comment\n literal 3662 3663 /abc#comment 3664 \Q#not comment 3665 literal/x 3666 abc#not comment\n literal 3667 3668 /abc#comment 3669 \Q#not comment 3670 literal\E #more comment 3671 /x 3672 abc#not comment\n literal 3673 3674 /abc#comment 3675 \Q#not comment 3676 literal\E #more comment/x 3677 abc#not comment\n literal 3678 3679 /\Qabc\$xyz\E/ 3680 abc\\\$xyz 3681 3682 /\Qabc\E\$\Qxyz\E/ 3683 abc\$xyz 3684 3685 /\Gabc/ 3686 abc 3687 \= Expect no match 3688 xyzabc 3689 3690 /\Gabc./g 3691 abc1abc2xyzabc3 3692 3693 /abc./g 3694 abc1abc2xyzabc3 3695 3696 /a(?x: b c )d/ 3697 XabcdY 3698 \= Expect no match 3699 Xa b c d Y 3700 3701 /((?x)x y z | a b c)/ 3702 XabcY 3703 AxyzB 3704 3705 /(?i)AB(?-i)C/ 3706 XabCY 3707 \= Expect no match 3708 XabcY 3709 3710 /((?i)AB(?-i)C|D)E/ 3711 abCE 3712 DE 3713 \= Expect no match 3714 abcE 3715 abCe 3716 dE 3717 De 3718 3719 /(.*)\d+\1/ 3720 abc123abc 3721 abc123bc 3722 3723 /(.*)\d+\1/s 3724 abc123abc 3725 abc123bc 3726 3727 /((.*))\d+\1/ 3728 abc123abc 3729 abc123bc 3730 3731 # This tests for an IPv6 address in the form where it can have up to 3732 # eight components, one and only one of which is empty. This must be 3733 # an internal component. 3734 3735 /^(?!:) # colon disallowed at start 3736 (?: # start of item 3737 (?: [0-9a-f]{1,4} | # 1-4 hex digits or 3738 (?(1)0 | () ) ) # if null previously matched, fail; else null 3739 : # followed by colon 3740 ){1,7} # end item; 1-7 of them required 3741 [0-9a-f]{1,4} $ # final hex number at end of string 3742 (?(1)|.) # check that there was an empty component 3743 /ix 3744 a123::a123 3745 a123:b342::abcd 3746 a123:b342::324e:abcd 3747 a123:ddde:b342::324e:abcd 3748 a123:ddde:b342::324e:dcba:abcd 3749 a123:ddde:9999:b342::324e:dcba:abcd 3750 \= Expect no match 3751 1:2:3:4:5:6:7:8 3752 a123:bce:ddde:9999:b342::324e:dcba:abcd 3753 a123::9999:b342::324e:dcba:abcd 3754 abcde:2:3:4:5:6:7:8 3755 ::1 3756 abcd:fee0:123:: 3757 :1 3758 1: 3759 3760 /[z\Qa-d]\E]/ 3761 z 3762 a 3763 - 3764 d 3765 ] 3766 \= Expect no match 3767 b 3768 3769 /(a+)*b/ 3770 \= Expect no match 3771 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3772 3773 /(?i)reg(?:ul(?:[a]|ae)r|ex)/ 3774 REGular 3775 regulaer 3776 Regex 3777 regulr 3778 3779 /[--]+/ 3780 3781 3782 3783 3784 3785 /(?<=Z)X./ 3786 \x84XAZXB 3787 3788 /ab cd (?x) de fg/ 3789 ab cd defg 3790 3791 /ab cd(?x) de fg/ 3792 ab cddefg 3793 \= Expect no match 3794 abcddefg 3795 3796 /(?<![^f]oo)(bar)/ 3797 foobarX 3798 \= Expect no match 3799 boobarX 3800 3801 /(?<![^f])X/ 3802 offX 3803 \= Expect no match 3804 onyX 3805 3806 /(?<=[^f])X/ 3807 onyX 3808 \= Expect no match 3809 offX 3810 3811 /^/gm 3812 a\nb\nc\n 3813 \ 3814 3815 /(?<=C\n)^/gm 3816 A\nC\nC\n 3817 3818 /(?:(?(1)a|b)(X))+/ 3819 bXaX 3820 3821 /(?:(?(1)\1a|b)(X|Y))+/ 3822 bXXaYYaY 3823 bXYaXXaX 3824 3825 /()()()()()()()()()(?:(?(10)\10a|b)(X|Y))+/ 3826 bXXaYYaY 3827 3828 /[[,abc,]+]/ 3829 abc] 3830 a,b] 3831 [a,b,c] 3832 3833 /(?-x: )/x 3834 A\x20B 3835 3836 "(?x)(?-x: \s*#\s*)" 3837 A # B 3838 \= Expect no match 3839 # 3840 3841 "(?x-is)(?:(?-ixs) \s*#\s*) include" 3842 A #include 3843 \= Expect no match 3844 A#include 3845 A #Include 3846 3847 /a*b*\w/ 3848 aaabbbb 3849 aaaa 3850 a 3851 3852 /a*b?\w/ 3853 aaabbbb 3854 aaaa 3855 a 3856 3857 /a*b{0,4}\w/ 3858 aaabbbb 3859 aaaa 3860 a 3861 3862 /a*b{0,}\w/ 3863 aaabbbb 3864 aaaa 3865 a 3866 3867 /a*\d*\w/ 3868 0a 3869 a 3870 3871 /a*b *\w/x 3872 a 3873 3874 /a*b#comment 3875 *\w/x 3876 a 3877 3878 /a* b *\w/x 3879 a 3880 3881 /^\w+=.*(\\\n.*)*/ 3882 abc=xyz\\\npqr 3883 3884 /(?=(\w+))\1:/ 3885 abcd: 3886 3887 /^(?=(\w+))\1:/ 3888 abcd: 3889 3890 /^\Eabc/ 3891 abc 3892 3893 /^[\Eabc]/ 3894 a 3895 \= Expect no match 3896 E 3897 3898 /^[a-\Ec]/ 3899 b 3900 \= Expect no match 3901 - 3902 E 3903 3904 /^[a\E\E-\Ec]/ 3905 b 3906 \= Expect no match 3907 - 3908 E 3909 3910 /^[\E\Qa\E-\Qz\E]+/ 3911 b 3912 \= Expect no match 3913 - 3914 3915 /^[a\Q]bc\E]/ 3916 a 3917 ] 3918 c 3919 3920 /^[a-\Q\E]/ 3921 a 3922 - 3923 3924 /^(a()*)*/ 3925 aaaa 3926 3927 /^(?:a(?:(?:))*)*/ 3928 aaaa 3929 3930 /^(a()+)+/ 3931 aaaa 3932 3933 /^(?:a(?:(?:))+)+/ 3934 aaaa 3935 3936 /(a){0,3}(?(1)b|(c|))*D/ 3937 abbD 3938 ccccD 3939 D 3940 3941 /(a|)*\d/ 3942 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 3943 \= Expect no match 3944 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3945 3946 /(?>a|)*\d/ 3947 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 3948 \= Expect no match 3949 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3950 3951 /(?:a|)*\d/ 3952 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 3953 \= Expect no match 3954 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3955 3956 /\Z/g 3957 abc\n 3958 3959 /^(?s)(?>.*)(?<!\n)/ 3960 abc 3961 \= Expect no match 3962 abc\n 3963 3964 /^(?![^\n]*\n\z)/ 3965 abc 3966 \= Expect no match 3967 abc\n 3968 3969 /\z(?<!\n)/ 3970 abc 3971 \= Expect no match 3972 abc\n 3973 3974 /(.*(.)?)*/ 3975 abcd 3976 3977 /( (A | (?(1)0|) )* )/x 3978 abcd 3979 3980 /( ( (?(1)0|) )* )/x 3981 abcd 3982 3983 /( (?(1)0|)* )/x 3984 abcd 3985 3986 /[[:abcd:xyz]]/ 3987 a] 3988 :] 3989 3990 /[abc[:x\]pqr]/ 3991 a 3992 [ 3993 : 3994 ] 3995 p 3996 3997 /.*[op][xyz]/ 3998 \= Expect no match 3999 fooabcfoo 4000 4001 /(?(?=.*b)b|^)/ 4002 adc 4003 abc 4004 4005 /(?(?=^.*b)b|^)/ 4006 adc 4007 \= Expect no match 4008 abc 4009 4010 /(?(?=.*b)b|^)*/ 4011 adc 4012 abc 4013 4014 /(?(?=.*b)b|^)+/ 4015 adc 4016 abc 4017 4018 /(?(?=b).*b|^d)/ 4019 abc 4020 4021 /(?(?=.*b).*b|^d)/ 4022 abc 4023 4024 /^%((?(?=[a])[^%])|b)*%$/ 4025 %ab% 4026 4027 /(?i)a(?-i)b|c/ 4028 XabX 4029 XAbX 4030 CcC 4031 \= Expect no match 4032 XABX 4033 4034 /[\x00-\xff\s]+/ 4035 \x0a\x0b\x0c\x0d 4036 4037 /(abc)\1/i 4038 \= Expect no match 4039 abc 4040 4041 /(abc)\1/ 4042 \= Expect no match 4043 abc 4044 4045 /[^a]*/i 4046 12abc 4047 12ABC 4048 4049 /[^a]*+/i 4050 12abc 4051 12ABC 4052 4053 /[^a]*?X/i 4054 \= Expect no match 4055 12abc 4056 12ABC 4057 4058 /[^a]+?X/i 4059 \= Expect no match 4060 12abc 4061 12ABC 4062 4063 /[^a]?X/i 4064 12aXbcX 4065 12AXBCX 4066 BCX 4067 4068 /[^a]??X/i 4069 12aXbcX 4070 12AXBCX 4071 BCX 4072 4073 /[^a]?+X/i 4074 12aXbcX 4075 12AXBCX 4076 BCX 4077 4078 /[^a]{2,3}/i 4079 abcdef 4080 ABCDEF 4081 4082 /[^a]{2,3}?/i 4083 abcdef 4084 ABCDEF 4085 4086 /[^a]{2,3}+/i 4087 abcdef 4088 ABCDEF 4089 4090 /((a|)+)+Z/ 4091 Z 4092 4093 /(a)b|(a)c/ 4094 ac 4095 4096 /(?>(a))b|(a)c/ 4097 ac 4098 4099 /(?=(a))ab|(a)c/ 4100 ac 4101 4102 /((?>(a))b|(a)c)/ 4103 ac 4104 4105 /((?>(a))b|(a)c)++/ 4106 ac 4107 4108 /(?:(?>(a))b|(a)c)++/ 4109 ac 4110 4111 /(?=(?>(a))b|(a)c)(..)/ 4112 ac 4113 4114 /(?>(?>(a))b|(a)c)/ 4115 ac 4116 4117 /(?:(?>([ab])))+a=/aftertext 4118 =ba= 4119 4120 /(?>([ab]))+a=/aftertext 4121 =ba= 4122 4123 /((?>(a+)b)+(aabab))/ 4124 aaaabaaabaabab 4125 4126 /(?>a+|ab)+?c/ 4127 \= Expect no match 4128 aabc 4129 4130 /(?>a+|ab)+c/ 4131 \= Expect no match 4132 aabc 4133 4134 /(?:a+|ab)+c/ 4135 aabc 4136 4137 /(?(?=(a))a)/ 4138 a 4139 4140 /(?(?=(a))a)(b)/ 4141 ab 4142 4143 /^(?:a|ab)++c/ 4144 \= Expect no match 4145 aaaabc 4146 4147 /^(?>a|ab)++c/ 4148 \= Expect no match 4149 aaaabc 4150 4151 /^(?:a|ab)+c/ 4152 aaaabc 4153 4154 /(?=abc){3}abc/aftertext 4155 abcabcabc 4156 \= Expect no match 4157 xyz 4158 4159 /(?=abc)+abc/aftertext 4160 abcabcabc 4161 \= Expect no match 4162 xyz 4163 4164 /(?=abc)++abc/aftertext 4165 abcabcabc 4166 \= Expect no match 4167 xyz 4168 4169 /(?=abc){0}xyz/ 4170 xyz 4171 4172 /(?=abc){1}xyz/ 4173 \= Expect no match 4174 xyz 4175 4176 /(?=(a))?./ 4177 ab 4178 bc 4179 4180 /(?=(a))??./ 4181 ab 4182 bc 4183 4184 /^(?=(?1))?[az]([abc])d/ 4185 abd 4186 zcdxx 4187 4188 /^(?!a){0}\w+/ 4189 aaaaa 4190 4191 /(?<=(abc))?xyz/ 4192 abcxyz 4193 pqrxyz 4194 4195 /^[\g<a>]+/ 4196 ggg<<<aaa>>> 4197 \= Expect no match 4198 \\ga 4199 4200 /^[\ga]+/ 4201 gggagagaxyz 4202 4203 /^[:a[:digit:]]+/ 4204 aaaa444:::Z 4205 4206 /^[:a[:digit:]:b]+/ 4207 aaaa444:::bbbZ 4208 4209 /[:a]xxx[b:]/ 4210 :xxx: 4211 4212 /(?<=a{2})b/i 4213 xaabc 4214 \= Expect no match 4215 xabc 4216 4217 /(?<!a{2})b/i 4218 xabc 4219 \= Expect no match 4220 xaabc 4221 4222 /(?<=a\h)c/ 4223 xa c 4224 4225 /(?<=[^a]{2})b/ 4226 axxbc 4227 aAAbc 4228 \= Expect no match 4229 xaabc 4230 4231 /(?<=[^a]{2})b/i 4232 axxbc 4233 \= Expect no match 4234 aAAbc 4235 xaabc 4236 4237 /(?<=a\H)c/ 4238 abc 4239 4240 /(?<=a\V)c/ 4241 abc 4242 4243 /(?<=a\v)c/ 4244 a\nc 4245 4246 /(?(?=c)c|d)++Y/ 4247 XcccddYX 4248 4249 /(?(?=c)c|d)*+Y/ 4250 XcccddYX 4251 4252 /^(a{2,3}){2,}+a/ 4253 aaaaaaa 4254 \= Expect no match 4255 aaaaaa 4256 aaaaaaaaa 4257 4258 /^(a{2,3})++a/ 4259 \= Expect no match 4260 aaaaaa 4261 4262 /^(a{2,3})*+a/ 4263 \= Expect no match 4264 aaaaaa 4265 4266 /\H\h\V\v/ 4267 X X\x0a 4268 X\x09X\x0b 4269 \= Expect no match 4270 \xa0 X\x0a 4271 4272 /\H*\h+\V?\v{3,4}/ 4273 \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a 4274 \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a 4275 \x09\x20\xa0\x0a\x0b\x0c 4276 \= Expect no match 4277 \x09\x20\xa0\x0a\x0b 4278 4279 /\H{3,4}/ 4280 XY ABCDE 4281 XY PQR ST 4282 4283 /.\h{3,4}./ 4284 XY AB PQRS 4285 4286 /\h*X\h?\H+Y\H?Z/ 4287 >XNNNYZ 4288 > X NYQZ 4289 \= Expect no match 4290 >XYZ 4291 > X NY Z 4292 4293 /\v*X\v?Y\v+Z\V*\x0a\V+\x0b\V{2,3}\x0c/ 4294 >XY\x0aZ\x0aA\x0bNN\x0c 4295 >\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c 4296 4297 /(foo)\Kbar/ 4298 foobar 4299 4300 /(foo)(\Kbar|baz)/ 4301 foobar 4302 foobaz 4303 4304 /(foo\Kbar)baz/ 4305 foobarbaz 4306 4307 /abc\K|def\K/g,aftertext 4308 Xabcdefghi 4309 4310 /ab\Kc|de\Kf/g,aftertext 4311 Xabcdefghi 4312 4313 /(?=C)/g,aftertext 4314 ABCDECBA 4315 4316 /^abc\K/aftertext 4317 abcdef 4318 \= Expect no match 4319 defabcxyz 4320 4321 /^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-2}Z/ 4322 ababababbbabZXXXX 4323 4324 /(?<A>tom|bon)-\g{A}/ 4325 tom-tom 4326 bon-bon 4327 4328 /(^(a|b\g{-1}))/ 4329 \= Expect no match 4330 bacxxx 4331 4332 /(?|(abc)|(xyz))\1/ 4333 abcabc 4334 xyzxyz 4335 \= Expect no match 4336 abcxyz 4337 xyzabc 4338 4339 /(?|(abc)|(xyz))(?1)/ 4340 abcabc 4341 xyzabc 4342 \= Expect no match 4343 xyzxyz 4344 4345 /^X(?5)(a)(?|(b)|(q))(c)(d)(Y)/ 4346 XYabcdY 4347 4348 /^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)/ 4349 XYabcdY 4350 4351 /^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)/ 4352 XYabcdY 4353 4354 /(?'abc'\w+):\k<abc>{2}/ 4355 a:aaxyz 4356 ab:ababxyz 4357 \= Expect no match 4358 a:axyz 4359 ab:abxyz 4360 4361 /(?'abc'\w+):\g{abc}{2}/ 4362 a:aaxyz 4363 ab:ababxyz 4364 \= Expect no match 4365 a:axyz 4366 ab:abxyz 4367 4368 /^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x 4369 abd 4370 ce 4371 4372 /^(a.)\g-1Z/ 4373 aXaXZ 4374 4375 /^(a.)\g{-1}Z/ 4376 aXaXZ 4377 4378 /^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) /x 4379 abcd 4380 4381 /(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT)) 4382 (?(DEFINE) 4383 (?<NAME_PAT>[a-z]+) 4384 (?<ADDRESS_PAT>\d+) 4385 )/x 4386 metcalfe 33 4387 4388 /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/ 4389 1.2.3.4 4390 131.111.10.206 4391 10.0.0.0 4392 \= Expect no match 4393 10.6 4394 455.3.4.5 4395 4396 /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/ 4397 1.2.3.4 4398 131.111.10.206 4399 10.0.0.0 4400 \= Expect no match 4401 10.6 4402 455.3.4.5 4403 4404 /^(\w++|\s++)*$/ 4405 now is the time for all good men to come to the aid of the party 4406 \= Expect no match 4407 this is not a line with only words and spaces! 4408 4409 /(\d++)(\w)/ 4410 12345a 4411 \= Expect no match 4412 12345+ 4413 4414 /a++b/ 4415 aaab 4416 4417 /(a++b)/ 4418 aaab 4419 4420 /(a++)b/ 4421 aaab 4422 4423 /([^()]++|\([^()]*\))+/ 4424 ((abc(ade)ufh()()x 4425 4426 /\(([^()]++|\([^()]+\))+\)/ 4427 (abc) 4428 (abc(def)xyz) 4429 \= Expect no match 4430 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 4431 4432 /^([^()]|\((?1)*\))*$/ 4433 abc 4434 a(b)c 4435 a(b(c))d 4436 \= Expect no match) 4437 a(b(c)d 4438 4439 /^>abc>([^()]|\((?1)*\))*<xyz<$/ 4440 >abc>123<xyz< 4441 >abc>1(2)3<xyz< 4442 >abc>(1(2)3)<xyz< 4443 4444 /^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i 4445 1221 4446 Satanoscillatemymetallicsonatas 4447 AmanaplanacanalPanama 4448 AblewasIereIsawElba 4449 \= Expect no match 4450 Thequickbrownfox 4451 4452 /^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/ 4453 12 4454 (((2+2)*-3)-7) 4455 -12 4456 \= Expect no match 4457 ((2+2)*-3)-7) 4458 4459 /^(x(y|(?1){2})z)/ 4460 xyz 4461 xxyzxyzz 4462 \= Expect no match 4463 xxyzz 4464 xxyzxyzxyzz 4465 4466 /((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/x 4467 <> 4468 <abcd> 4469 <abc <123> hij> 4470 <abc <def> hij> 4471 <abc<>def> 4472 <abc<> 4473 \= Expect no match 4474 <abc 4475 4476 /^a+(*FAIL)/ 4477 \= Expect no match 4478 aaaaaa 4479 4480 /a+b?c+(*FAIL)/ 4481 \= Expect no match 4482 aaabccc 4483 4484 /a+b?(*PRUNE)c+(*FAIL)/ 4485 \= Expect no match 4486 aaabccc 4487 4488 /a+b?(*COMMIT)c+(*FAIL)/ 4489 \= Expect no match 4490 aaabccc 4491 4492 /a+b?(*SKIP)c+(*FAIL)/ 4493 \= Expect no match 4494 aaabcccaaabccc 4495 4496 /^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 4497 aaaxxxxxx 4498 aaa++++++ 4499 bbbxxxxx 4500 bbb+++++ 4501 cccxxxx 4502 ccc++++ 4503 dddddddd 4504 4505 /^(aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 4506 aaaxxxxxx 4507 aaa++++++ 4508 bbbxxxxx 4509 bbb+++++ 4510 cccxxxx 4511 ccc++++ 4512 dddddddd 4513 4514 /a+b?(*THEN)c+(*FAIL)/ 4515 \= Expect no match 4516 aaabccc 4517 4518 /(A (A|B(*ACCEPT)|C) D)(E)/x 4519 AB 4520 ABX 4521 AADE 4522 ACDE 4523 \= Expect no match 4524 AD 4525 4526 /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i 4527 1221 4528 Satan, oscillate my metallic sonatas! 4529 A man, a plan, a canal: Panama! 4530 Able was I ere I saw Elba. 4531 \= Expect no match 4532 The quick brown fox 4533 4534 /^((.)(?1)\2|.)$/ 4535 a 4536 aba 4537 aabaa 4538 abcdcba 4539 pqaabaaqp 4540 ablewasiereisawelba 4541 \= Expect no match 4542 rhubarb 4543 the quick brown fox 4544 4545 /(a)(?<=b(?1))/ 4546 baz 4547 \= Expect no match 4548 caz 4549 4550 /(?<=b(?1))(a)/ 4551 zbaaz 4552 \= Expect no match 4553 aaa 4554 4555 /(?<X>a)(?<=b(?&X))/ 4556 baz 4557 4558 /^(?|(abc)|(def))\1/ 4559 abcabc 4560 defdef 4561 \= Expect no match 4562 abcdef 4563 defabc 4564 4565 /^(?|(abc)|(def))(?1)/ 4566 abcabc 4567 defabc 4568 \= Expect no match 4569 defdef 4570 abcdef 4571 4572 /(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/x,dupnames 4573 a\"aaaaa 4574 b\"aaaaa 4575 \= Expect no match 4576 b\"11111 4577 4578 /(?:(?1)|B)(A(*F)|C)/ 4579 ABCD 4580 CCD 4581 \= Expect no match 4582 CAD 4583 4584 /^(?:(?1)|B)(A(*F)|C)/ 4585 CCD 4586 BCD 4587 \= Expect no match 4588 ABCD 4589 CAD 4590 BAD 4591 4592 /(?:(?1)|B)(A(*ACCEPT)XX|C)D/ 4593 AAD 4594 ACD 4595 BAD 4596 BCD 4597 BAX 4598 \= Expect no match 4599 ACX 4600 ABC 4601 4602 /(?(DEFINE)(A))B(?1)C/ 4603 BAC 4604 4605 /(?(DEFINE)((A)\2))B(?1)C/ 4606 BAAC 4607 4608 /(?<pn> \( ( [^()]++ | (?&pn) )* \) )/x 4609 (ab(cd)ef) 4610 4611 /^(?=a(*SKIP)b|ac)/ 4612 \= Expect no match 4613 ac 4614 4615 /^(?=a(*PRUNE)b)/ 4616 ab 4617 \= Expect no match 4618 ac 4619 4620 /^(?=a(*ACCEPT)b)/ 4621 ac 4622 4623 /(?>a\Kb)/ 4624 ab 4625 4626 /((?>a\Kb))/ 4627 ab 4628 4629 /(a\Kb)/ 4630 ab 4631 4632 /^a\Kcz|ac/ 4633 ac 4634 4635 /(?>a\Kbz|ab)/ 4636 ab 4637 4638 /^(?&t)(?(DEFINE)(?<t>a\Kb))$/ 4639 ab 4640 4641 /^([^()]|\((?1)*\))*$/ 4642 a(b)c 4643 a(b(c)d)e 4644 4645 /(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))/ 4646 0 4647 00 4648 0000 4649 4650 /(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))/ 4651 0 4652 00 4653 0000 4654 4655 # This one does fail, as expected, in Perl. It needs the complex item at the 4656 # end of the pattern. A single letter instead of (B|D) makes it not fail, which 4657 # I think is a Perl bug. 4658 4659 /A(*COMMIT)(B|D)/ 4660 \= Expect no match 4661 ACABX 4662 4663 # Check the use of names for failure 4664 4665 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark 4666 \= Expect no match 4667 AC 4668 CB 4669 4670 /(*MARK:A)(*SKIP:B)(C|X)/mark 4671 C 4672 \= Expect no match 4673 D 4674 4675 /^(A(*THEN:A)B|C(*THEN:B)D)/mark 4676 \= Expect no match 4677 CB 4678 4679 /^(?:A(*THEN:A)B|C(*THEN:B)D)/mark 4680 \= Expect no match 4681 CB 4682 4683 /^(?>A(*THEN:A)B|C(*THEN:B)D)/mark 4684 \= Expect no match 4685 CB 4686 4687 # This should succeed, as the skip causes bump to offset 1 (the mark). Note 4688 # that we have to have something complicated such as (B|Z) at the end because, 4689 # for Perl, a simple character somehow causes an unwanted optimization to mess 4690 # with the handling of backtracking verbs. 4691 4692 /A(*MARK:A)A+(*SKIP:A)(B|Z) | AC/x,mark 4693 AAAC 4694 4695 # Test skipping over a non-matching mark. 4696 4697 /A(*MARK:A)A+(*MARK:B)(*SKIP:A)(B|Z) | AC/x,mark 4698 AAAC 4699 4700 # Check shorthand for MARK. 4701 4702 /A(*:A)A+(*SKIP:A)(B|Z) | AC/x,mark 4703 AAAC 4704 4705 /(*:A)A+(*SKIP:A)(B|Z)/mark 4706 \= Expect no match 4707 AAAC 4708 4709 # This should succeed, as a non-existent skip name disables the skip. 4710 4711 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark 4712 AAAC 4713 4714 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC(*:B)/x,mark 4715 AAAC 4716 4717 # COMMIT at the start of a pattern should act like an anchor. Again, however, 4718 # we need the complication for Perl. 4719 4720 /(*COMMIT)(A|P)(B|P)(C|P)/ 4721 ABCDEFG 4722 \= Expect no match 4723 DEFGABC 4724 4725 # COMMIT inside an atomic group can't stop backtracking over the group. 4726 4727 /(\w+)(?>b(*COMMIT))\w{2}/ 4728 abbb 4729 4730 /(\w+)b(*COMMIT)\w{2}/ 4731 \= Expect no match 4732 abbb 4733 4734 # Check opening parens in comment when seeking forward reference. 4735 4736 /(?&t)(?#()(?(DEFINE)(?<t>a))/ 4737 bac 4738 4739 # COMMIT should override THEN. 4740 4741 /(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/ 4742 \= Expect no match 4743 yes 4744 4745 /(?>(*COMMIT)(yes|no)(*THEN)(*F))?/ 4746 \= Expect no match 4747 yes 4748 4749 /b?(*SKIP)c/ 4750 bc 4751 abc 4752 4753 /(*SKIP)bc/ 4754 \= Expect no match 4755 a 4756 4757 /(*SKIP)b/ 4758 \= Expect no match 4759 a 4760 4761 /(?P<abn>(?P=abn)xxx|)+/ 4762 xxx 4763 4764 /(?i:([^b]))(?1)/ 4765 aa 4766 aA 4767 \= Expect no match 4768 ab 4769 aB 4770 Ba 4771 ba 4772 4773 /^(?&t)*+(?(DEFINE)(?<t>a))\w$/ 4774 aaaaaaX 4775 \= Expect no match 4776 aaaaaa 4777 4778 /^(?&t)*(?(DEFINE)(?<t>a))\w$/ 4779 aaaaaaX 4780 aaaaaa 4781 4782 /^(a)*+(\w)/ 4783 aaaaX 4784 YZ 4785 \= Expect no match 4786 aaaa 4787 4788 /^(?:a)*+(\w)/ 4789 aaaaX 4790 YZ 4791 \= Expect no match 4792 aaaa 4793 4794 /^(a)++(\w)/ 4795 aaaaX 4796 \= Expect no match 4797 aaaa 4798 YZ 4799 4800 /^(?:a)++(\w)/ 4801 aaaaX 4802 \= Expect no match 4803 aaaa 4804 YZ 4805 4806 /^(a)?+(\w)/ 4807 aaaaX 4808 YZ 4809 4810 /^(?:a)?+(\w)/ 4811 aaaaX 4812 YZ 4813 4814 /^(a){2,}+(\w)/ 4815 aaaaX 4816 \= Expect no match 4817 aaa 4818 YZ 4819 4820 /^(?:a){2,}+(\w)/ 4821 aaaaX 4822 \= Expect no match 4823 aaa 4824 YZ 4825 4826 /(a|)*(?1)b/ 4827 b 4828 ab 4829 aab 4830 4831 /(a)++(?1)b/ 4832 \= Expect no match 4833 ab 4834 aab 4835 4836 /(a)*+(?1)b/ 4837 \= Expect no match 4838 ab 4839 aab 4840 4841 /(?1)(?:(b)){0}/ 4842 b 4843 4844 /(foo ( \( ((?:(?> [^()]+ )|(?2))*) \) ) )/x 4845 foo(bar(baz)+baz(bop)) 4846 4847 /(A (A|B(*ACCEPT)|C) D)(E)/x 4848 AB 4849 4850 /\A.*?(a|bc)/ 4851 ba 4852 4853 /\A.*?(?:a|bc)++/ 4854 ba 4855 4856 /\A.*?(a|bc)++/ 4857 ba 4858 4859 /\A.*?(?:a|bc|d)/ 4860 ba 4861 4862 /(?:(b))++/ 4863 beetle 4864 4865 /(?(?=(a(*ACCEPT)z))a)/ 4866 a 4867 4868 /^(a)(?1)+ab/ 4869 aaaab 4870 4871 /^(a)(?1)++ab/ 4872 \= Expect no match 4873 aaaab 4874 4875 /^(?=a(*:M))aZ/mark 4876 aZbc 4877 4878 /^(?!(*:M)b)aZ/mark 4879 aZbc 4880 4881 /(?(DEFINE)(a))?b(?1)/ 4882 backgammon 4883 4884 /^\N+/ 4885 abc\ndef 4886 4887 /^\N{1,}/ 4888 abc\ndef 4889 4890 /(?(R)a+|(?R)b)/ 4891 aaaabcde 4892 4893 /(?(R)a+|((?R))b)/ 4894 aaaabcde 4895 4896 /((?(R)a+|(?1)b))/ 4897 aaaabcde 4898 4899 /((?(R1)a+|(?1)b))/ 4900 aaaabcde 4901 4902 /((?(R)a|(?1)))*/ 4903 aaa 4904 4905 /((?(R)a|(?1)))+/ 4906 aaa 4907 4908 /a(*:any 4909 name)/mark 4910 abc 4911 4912 /(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))/ 4913 a 4914 ba 4915 bba 4916 4917 # Checking revised (*THEN) handling. 4918 4919 # Capture 4920 4921 /^.*? (a(*THEN)b) c/x 4922 \= Expect no match 4923 aabc 4924 4925 /^.*? (a(*THEN)b|(*F)) c/x 4926 aabc 4927 4928 /^.*? ( (a(*THEN)b) | (*F) ) c/x 4929 aabc 4930 4931 /^.*? ( (a(*THEN)b) ) c/x 4932 \= Expect no match 4933 aabc 4934 4935 # Non-capture 4936 4937 /^.*? (?:a(*THEN)b) c/x 4938 \= Expect no match 4939 aabc 4940 4941 /^.*? (?:a(*THEN)b|(*F)) c/x 4942 aabc 4943 4944 /^.*? (?: (?:a(*THEN)b) | (*F) ) c/x 4945 aabc 4946 4947 /^.*? (?: (?:a(*THEN)b) ) c/x 4948 \= Expect no match 4949 aabc 4950 4951 # Atomic 4952 4953 /^.*? (?>a(*THEN)b) c/x 4954 \= Expect no match 4955 aabc 4956 4957 /^.*? (?>a(*THEN)b|(*F)) c/x 4958 aabc 4959 4960 /^.*? (?> (?>a(*THEN)b) | (*F) ) c/x 4961 aabc 4962 4963 /^.*? (?> (?>a(*THEN)b) ) c/x 4964 \= Expect no match 4965 aabc 4966 4967 # Possessive capture 4968 4969 /^.*? (a(*THEN)b)++ c/x 4970 \= Expect no match 4971 aabc 4972 4973 /^.*? (a(*THEN)b|(*F))++ c/x 4974 aabc 4975 4976 /^.*? ( (a(*THEN)b)++ | (*F) )++ c/x 4977 aabc 4978 4979 /^.*? ( (a(*THEN)b)++ )++ c/x 4980 \= Expect no match 4981 aabc 4982 4983 # Possessive non-capture 4984 4985 /^.*? (?:a(*THEN)b)++ c/x 4986 \= Expect no match 4987 aabc 4988 4989 /^.*? (?:a(*THEN)b|(*F))++ c/x 4990 aabc 4991 4992 /^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c/x 4993 aabc 4994 4995 /^.*? (?: (?:a(*THEN)b)++ )++ c/x 4996 \= Expect no match 4997 aabc 4998 4999 # Condition assertion 5000 5001 /^(?(?=a(*THEN)b)ab|ac)/ 5002 ac 5003 5004 # Condition 5005 5006 /^.*?(?(?=a)a|b(*THEN)c)/ 5007 \= Expect no match 5008 ba 5009 5010 /^.*?(?:(?(?=a)a|b(*THEN)c)|d)/ 5011 ba 5012 5013 /^.*?(?(?=a)a(*THEN)b|c)/ 5014 \= Expect no match 5015 ac 5016 5017 # Assertion 5018 5019 /^.*(?=a(*THEN)b)/ 5020 aabc 5021 5022 # -------------------------- 5023 5024 /(?>a(*:m))/imsx,mark 5025 a 5026 5027 /(?>(a)(*:m))/imsx,mark 5028 a 5029 5030 /(?<=a(*ACCEPT)b)c/ 5031 xacd 5032 5033 /(?<=(a(*ACCEPT)b))c/ 5034 xacd 5035 5036 /(?<=(a(*COMMIT)b))c/ 5037 xabcd 5038 \= Expect no match 5039 xacd 5040 5041 /(?<!a(*FAIL)b)c/ 5042 xcd 5043 acd 5044 5045 /(?<=a(*:N)b)c/mark 5046 xabcd 5047 5048 /(?<=a(*PRUNE)b)c/ 5049 xabcd 5050 5051 /(?<=a(*SKIP)b)c/ 5052 xabcd 5053 5054 /(?<=a(*THEN)b)c/ 5055 xabcd 5056 5057 /(a)(?2){2}(.)/ 5058 abcd 5059 5060 /(*MARK:A)(*PRUNE:B)(C|X)/mark 5061 C 5062 \= Expect no match 5063 D 5064 5065 /(*MARK:A)(*PRUNE:B)(C|X)/mark 5066 C 5067 \= Expect no match 5068 D 5069 5070 /(*MARK:A)(*THEN:B)(C|X)/mark 5071 C 5072 \= Expect no match 5073 D 5074 5075 /(*MARK:A)(*THEN:B)(C|X)/mark,no_start_optimize 5076 C 5077 \= Expect no match 5078 D 5079 5080 /(*MARK:A)(*THEN:B)(C|X)/mark 5081 C 5082 \= Expect no match 5083 D 5084 5085 # This should fail, as the skip causes a bump to offset 3 (the skip). 5086 5087 /A(*MARK:A)A+(*SKIP)(B|Z) | AC/x,mark 5088 \= Expect no match 5089 AAAC 5090 5091 # Same 5092 5093 /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/x,mark 5094 \= Expect no match 5095 AAAC 5096 5097 /A(*:A)A+(*SKIP)(B|Z) | AC/x,mark 5098 \= Expect no match 5099 AAAC 5100 5101 # This should fail, as a null name is the same as no name. 5102 5103 /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/x,mark 5104 \= Expect no match 5105 AAAC 5106 5107 # A check on what happens after hitting a mark and them bumping along to 5108 # something that does not even start. Perl reports tags after the failures 5109 # here, though it does not when the individual letters are made into something 5110 # more complicated. 5111 5112 /A(*:A)B|XX(*:B)Y/mark 5113 AABC 5114 XXYZ 5115 \= Expect no match 5116 XAQQ 5117 XAQQXZZ 5118 AXQQQ 5119 AXXQQQ 5120 5121 /^(A(*THEN:A)B|C(*THEN:B)D)/mark 5122 AB 5123 CD 5124 \= Expect no match 5125 AC 5126 CB 5127 5128 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark 5129 AB 5130 CD 5131 \= Expect no match 5132 AC 5133 CB 5134 5135 # An empty name does not pass back an empty string. It is the same as if no 5136 # name were given. 5137 5138 /^(A(*PRUNE:)B|C(*PRUNE:B)D)/mark 5139 AB 5140 CD 5141 5142 # PRUNE goes to next bumpalong; COMMIT does not. 5143 5144 /A(*PRUNE:A)B/mark 5145 ACAB 5146 5147 # Mark names can be duplicated. 5148 5149 /A(*:A)B|X(*:A)Y/mark 5150 AABC 5151 XXYZ 5152 5153 /b(*:m)f|a(*:n)w/mark 5154 aw 5155 \= Expect no match 5156 abc 5157 5158 /b(*:m)f|aw/mark 5159 abaw 5160 \= Expect no match 5161 abc 5162 abax 5163 5164 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/x,mark 5165 AAAC 5166 5167 /(?=a(*MARK:A)b)..x/mark 5168 abxy 5169 \= Expect no match 5170 abpq 5171 5172 /(?=a(*MARK:A)b)..(*:Y)x/mark 5173 abxy 5174 \= Expect no match 5175 abpq 5176 5177 /(?=a(*PRUNE:A)b)..x/mark 5178 abxy 5179 \= Expect no match 5180 abpq 5181 5182 /(?=a(*PRUNE:A)b)..(*:Y)x/mark 5183 abxy 5184 \= Expect no match 5185 abpq 5186 5187 /(?=a(*THEN:A)b)..x/mark 5188 abxy 5189 \= Expect no match 5190 abpq 5191 5192 /(?=a(*THEN:A)b)..(*:Y)x/mark 5193 abxy 5194 \= Expect no match 5195 abpq 5196 5197 /(another)?(\1?)test/ 5198 hello world test 5199 5200 /(another)?(\1+)test/ 5201 \= Expect no match 5202 hello world test 5203 5204 /(a(*COMMIT)b){0}a(?1)|aac/ 5205 aac 5206 5207 /((?:a?)*)*c/ 5208 aac 5209 5210 /((?>a?)*)*c/ 5211 aac 5212 5213 /(?>.*?a)(?<=ba)/ 5214 aba 5215 5216 /(?:.*?a)(?<=ba)/ 5217 aba 5218 5219 /(?>.*?a)b/s 5220 aab 5221 5222 /(?>.*?a)b/ 5223 aab 5224 5225 /(?>^a)b/s 5226 \= Expect no match 5227 aab 5228 5229 /(?>.*?)(?<=(abcd)|(wxyz))/ 5230 alphabetabcd 5231 endingwxyz 5232 5233 /(?>.*)(?<=(abcd)|(wxyz))/ 5234 alphabetabcd 5235 endingwxyz 5236 5237 "(?>.*)foo" 5238 \= Expect no match 5239 abcdfooxyz 5240 5241 "(?>.*?)foo" 5242 abcdfooxyz 5243 5244 /(?:(a(*PRUNE)b)){0}(?:(?1)|ac)/ 5245 ac 5246 5247 /(?:(a(*SKIP)b)){0}(?:(?1)|ac)/ 5248 ac 5249 5250 /(?<=(*SKIP)ac)a/ 5251 \= Expect no match 5252 aa 5253 5254 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark 5255 AAAC 5256 5257 /a(*SKIP:m)x|ac(*:n)(*SKIP:n)d|ac/mark 5258 acacd 5259 5260 /A(*SKIP:m)x|A(*SKIP:n)x|AB/mark 5261 AB 5262 5263 /((*SKIP:r)d){0}a(*SKIP:m)x|ac(*:n)|ac/mark 5264 acacd 5265 5266 # Tests that try to figure out how Perl works. My hypothesis is that the first 5267 # verb that is backtracked onto is the one that acts. This seems to be the case 5268 # almost all the time, but there is one exception that is perhaps a bug. 5269 5270 # This matches "aaaac"; each PRUNE advances one character until the subject no 5271 # longer starts with 5 'a's. 5272 5273 /aaaaa(*PRUNE)b|a+c/ 5274 aaaaaac 5275 5276 # Putting SKIP in front of PRUNE makes no difference, as it is never 5277 # backtracked onto, whether or not it has a label. 5278 5279 /aaaaa(*SKIP)(*PRUNE)b|a+c/ 5280 aaaaaac 5281 5282 /aaaaa(*SKIP:N)(*PRUNE)b|a+c/ 5283 aaaaaac 5284 5285 /aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c/ 5286 aaaaaac 5287 5288 # Putting THEN in front makes no difference. 5289 5290 /aaaaa(*THEN)(*PRUNE)b|a+c/ 5291 aaaaaac 5292 5293 # However, putting COMMIT in front of the prune changes it to "no match". I 5294 # think this is inconsistent and possibly a bug. For the moment, running this 5295 # test is moved out of the Perl-compatible file. 5296 5297 /aaaaa(*COMMIT)(*PRUNE)b|a+c/ 5298 5299 # OK, lets play the same game again using SKIP instead of PRUNE. 5300 5301 # This matches "ac" because SKIP forces the next match to start on the 5302 # sixth "a". 5303 5304 /aaaaa(*SKIP)b|a+c/ 5305 aaaaaac 5306 5307 # Putting PRUNE in front makes no difference. 5308 5309 /aaaaa(*PRUNE)(*SKIP)b|a+c/ 5310 aaaaaac 5311 5312 # Putting THEN in front makes no difference. 5313 5314 /aaaaa(*THEN)(*SKIP)b|a+c/ 5315 aaaaaac 5316 5317 # In this case, neither does COMMIT. This still matches "ac". 5318 5319 /aaaaa(*COMMIT)(*SKIP)b|a+c/ 5320 aaaaaac 5321 5322 # This gives "no match", as expected. 5323 5324 /aaaaa(*COMMIT)b|a+c/ 5325 \= Expect no match 5326 aaaaaac 5327 5328 # ---- Tests using THEN ---- 5329 5330 # This matches "aaaaaac", as expected. 5331 5332 /aaaaa(*THEN)b|a+c/ 5333 aaaaaac 5334 5335 # Putting SKIP in front makes no difference. 5336 5337 /aaaaa(*SKIP)(*THEN)b|a+c/ 5338 aaaaaac 5339 5340 # Putting PRUNE in front makes no difference. 5341 5342 /aaaaa(*PRUNE)(*THEN)b|a+c/ 5343 aaaaaac 5344 5345 # Putting COMMIT in front makes no difference. 5346 5347 /aaaaa(*COMMIT)(*THEN)b|a+c/ 5348 aaaaaac 5349 5350 # End of "priority" tests 5351 5352 /aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+/ 5353 aaaaaa 5354 5355 /aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 5356 aaaaaa 5357 5358 /aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+/ 5359 aaaaaa 5360 5361 /aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 5362 aaaaaa 5363 5364 /a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c/ 5365 aaaac 5366 5367 /a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c/ 5368 aaaac 5369 5370 /aaa(*PRUNE:A)a(*SKIP:A)b|a+c/ 5371 aaaac 5372 5373 /aaa(*MARK:A)a(*SKIP:A)b|a+c/ 5374 aaaac 5375 5376 /a(*:m)a(*COMMIT)(*SKIP:m)b|a+c/mark 5377 aaaaaac 5378 5379 /.?(a|b(*THEN)c)/ 5380 ba 5381 5382 /(a(*COMMIT)b)c|abd/ 5383 abc 5384 \= Expect no match 5385 abd 5386 5387 /(?=a(*COMMIT)b)abc|abd/ 5388 abc 5389 abd 5390 5391 /(?>a(*COMMIT)b)c|abd/ 5392 abc 5393 abd 5394 5395 /a(?=b(*COMMIT)c)[^d]|abd/ 5396 abc 5397 \= Expect no match 5398 abd 5399 5400 /a(?=bc).|abd/ 5401 abd 5402 abc 5403 5404 /a(?>b(*COMMIT)c)d|abd/ 5405 \= Expect no match 5406 abceabd 5407 5408 /a(?>bc)d|abd/ 5409 abceabd 5410 5411 /(?>a(*COMMIT)b)c|abd/ 5412 abd 5413 5414 /(?>a(*COMMIT)c)d|abd/ 5415 \= Expect no match 5416 abd 5417 5418 /((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))/ 5419 ac 5420 5421 # These tests were formerly in test 2, but changes in PCRE and Perl have 5422 # made them compatible. 5423 5424 /^(a)?(?(1)a|b)+$/ 5425 \= Expect no match 5426 a 5427 5428 /(?=a\Kb)ab/ 5429 ab 5430 5431 /(?!a\Kb)ac/ 5432 ac 5433 5434 /^abc(?<=b\Kc)d/ 5435 abcd 5436 5437 /^abc(?<!b\Kq)d/ 5438 abcd 5439 5440 /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/x,mark 5441 \= Expect no match 5442 AAAC 5443 5444 /^((abc|abcx)(*THEN)y|abcd)/ 5445 abcd 5446 \= Expect no match 5447 abcxy 5448 5449 /^((yes|no)(*THEN)(*F))?/ 5450 \= Expect no match 5451 yes 5452 5453 /(A (.*) C? (*THEN) | A D) (*FAIL)/x 5454 \= Expect no match 5455 AbcdCBefgBhiBqz 5456 5457 /(A (.*) C? (*THEN) | A D) z/x 5458 \= Expect no match 5459 AbcdCBefgBhiBqz 5460 5461 /(A (.*) C? (*THEN) | A D) \s* (*FAIL)/x 5462 \= Expect no match 5463 AbcdCBefgBhiBqz 5464 5465 /(A (.*) C? (*THEN) | A D) \s* z/x 5466 \= Expect no match 5467 AbcdCBefgBhiBqz 5468 5469 /(A (.*) (?:C|) (*THEN) | A D) (*FAIL)/x 5470 \= Expect no match 5471 AbcdCBefgBhiBqz 5472 5473 /(A (.*) (?:C|) (*THEN) | A D) z/x 5474 \= Expect no match 5475 AbcdCBefgBhiBqz 5476 5477 /(A (.*) C{0,6} (*THEN) | A D) (*FAIL)/x 5478 \= Expect no match 5479 AbcdCBefgBhiBqz 5480 5481 /(A (.*) C{0,6} (*THEN) | A D) z/x 5482 \= Expect no match 5483 AbcdCBefgBhiBqz 5484 5485 /(A (.*) (CE){0,6} (*THEN) | A D) (*FAIL)/x 5486 \= Expect no match 5487 AbcdCEBefgBhiBqz 5488 5489 /(A (.*) (CE){0,6} (*THEN) | A D) z/x 5490 \= Expect no match 5491 AbcdCEBefgBhiBqz 5492 5493 /(A (.*) (CE*){0,6} (*THEN) | A D) (*FAIL)/x 5494 \= Expect no match 5495 AbcdCBefgBhiBqz 5496 5497 /(A (.*) (CE*){0,6} (*THEN) | A D) z/x 5498 \= Expect no match 5499 AbcdCBefgBhiBqz 5500 5501 /(?=a(*COMMIT)b|ac)ac|ac/ 5502 \= Expect no match 5503 ac 5504 5505 /(?=a(*COMMIT)b|(ac)) ac | (a)c/x 5506 \= Expect no match 5507 ac 5508 5509 # ---- 5510 5511 /(?(?!b(*THEN)a)bn|bnn)/ 5512 bnn 5513 5514 /(?!b(*SKIP)a)bn|bnn/ 5515 bnn 5516 5517 /(?(?!b(*SKIP)a)bn|bnn)/ 5518 bnn 5519 5520 /(?!b(*PRUNE)a)bn|bnn/ 5521 bnn 5522 5523 /(?(?!b(*PRUNE)a)bn|bnn)/ 5524 bnn 5525 5526 /(?!b(*COMMIT)a)bn|bnn/ 5527 bnn 5528 5529 /(?(?!b(*COMMIT)a)bn|bnn)/ 5530 bnn 5531 5532 /(?=b(*SKIP)a)bn|bnn/ 5533 \= Expect no match 5534 bnn 5535 5536 /(?=b(*THEN)a)bn|bnn/ 5537 bnn 5538 5539 /^(?!a(*SKIP)b)/ 5540 ac 5541 5542 /^(?!a(*SKIP)b)../ 5543 acd 5544 5545 /(?!a(*SKIP)b)../ 5546 acd 5547 5548 /^(?(?!a(*SKIP)b))/ 5549 ac 5550 5551 /^(?!a(*PRUNE)b)../ 5552 acd 5553 5554 /(?!a(*PRUNE)b)../ 5555 acd 5556 5557 /(?!a(*COMMIT)b)ac|cd/ 5558 ac 5559 5560 /\A.*?(?:a|bc)/ 5561 ba 5562 5563 /^(A(*THEN)B|C(*THEN)D)/ 5564 CD 5565 5566 /(*:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 5567 abc 5568 5569 /(*PRUNE:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 5570 abc 5571 5572 /(*SKIP:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 5573 abc 5574 5575 /(*THEN:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 5576 abc 5577 5578 /^\d*\w{4}/ 5579 1234 5580 \= Expect no match 5581 123 5582 5583 /^[^b]*\w{4}/ 5584 aaaa 5585 \= Expect no match 5586 aaa 5587 5588 /^[^b]*\w{4}/i 5589 aaaa 5590 \= Expect no match 5591 aaa 5592 5593 /^a*\w{4}/ 5594 aaaa 5595 \= Expect no match 5596 aaa 5597 5598 /^a*\w{4}/i 5599 aaaa 5600 \= Expect no match 5601 aaa 5602 5603 /(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames 5604 foofoo 5605 barbar 5606 5607 /(?<n>A)(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames 5608 AfooA 5609 AbarA 5610 \= Expect no match 5611 Afoofoo 5612 Abarbar 5613 5614 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 5615 1 IN SOA non-sp1 non-sp2( 5616 5617 /^ (?:(?<A>A)|(?'B'B)(?<A>A)) (?('A')x) (?(<B>)y)$/x,dupnames 5618 Ax 5619 BAxy 5620 5621 /^A\xZ/ 5622 A\0Z 5623 5624 /^A\o{123}B/ 5625 A\123B 5626 5627 / ^ a + + b $ /x 5628 aaaab 5629 5630 / ^ a + #comment 5631 + b $ /x 5632 aaaab 5633 5634 / ^ a + #comment 5635 #comment 5636 + b $ /x 5637 aaaab 5638 5639 / ^ (?> a + ) b $ /x 5640 aaaab 5641 5642 / ^ ( a + ) + + \w $ /x 5643 aaaab 5644 5645 /(?:a\Kb)*+/aftertext 5646 ababc 5647 5648 /(?>a\Kb)*/aftertext 5649 ababc 5650 5651 /(?:a\Kb)*/aftertext 5652 ababc 5653 5654 /(a\Kb)*+/aftertext 5655 ababc 5656 5657 /(a\Kb)*/aftertext 5658 ababc 5659 5660 /(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/ 5661 \= Expect no match 5662 acb 5663 5664 '\A(?:[^\"]++|\"(?:[^\"]*+|\"\")*+\")++' 5665 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 5666 5667 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")*+\")++' 5668 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 5669 5670 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")++\")++' 5671 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 5672 5673 '\A([^\"1]++|[\"2]([^\"3]*+|[\"4][\"5])*+[\"6])++' 5674 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 5675 5676 /^\w+(?>\s*)(?<=\w)/ 5677 test test 5678 5679 /(?P<same>a)(?P<same>b)/g,dupnames 5680 abbaba 5681 5682 /(?P<same>a)(?P<same>b)(?P=same)/g,dupnames 5683 abbaba 5684 5685 /(?P=same)?(?P<same>a)(?P<same>b)/g,dupnames 5686 abbaba 5687 5688 /(?:(?P=same)?(?:(?P<same>a)|(?P<same>b))(?P=same))+/g,dupnames 5689 bbbaaabaabb 5690 5691 /(?:(?P=same)?(?:(?P=same)(?P<same>a)(?P=same)|(?P=same)?(?P<same>b)(?P=same)){2}(?P=same)(?P<same>c)(?P=same)){2}(?P<same>z)?/g,dupnames 5692 \= Expect no match 5693 bbbaaaccccaaabbbcc 5694 5695 /(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/ 5696 acl 5697 bdl 5698 adl 5699 bcl 5700 5701 /\sabc/ 5702 \x{0b}abc 5703 5704 /[\Qa]\E]+/ 5705 aa]] 5706 5707 /[\Q]a\E]+/ 5708 aa]] 5709 5710 /A((((((((a))))))))\8B/ 5711 AaaB 5712 5713 /A(((((((((a)))))))))\9B/ 5714 AaaB 5715 5716 /A[\8\9]B/ 5717 A8B 5718 A9B 5719 5720 /(|ab)*?d/ 5721 abd 5722 xyd 5723 5724 /(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))/ 5725 1234abcd 5726 5727 /(\2|a)(\1)/ 5728 aaa 5729 5730 /(\2)(\1)/ 5731 5732 "Z*(|d*){216}" 5733 5734 "(?1)(?#?'){8}(a)" 5735 baaaaaaaaac 5736 5737 /((((((((((((x))))))))))))\12/ 5738 xx 5739 5740 /A[\8]B[\9]C/ 5741 A8B9C 5742 5743 /(?1)()((((((\1++))\x85)+)|))/ 5744 \x85\x85 5745 5746 "(?|(\k'Pm')|(?'Pm'))" 5747 abcd 5748 5749 /(?|(aaa)|(b))\g{1}/ 5750 aaaaaa 5751 bb 5752 5753 /(?|(aaa)|(b))(?1)/ 5754 aaaaaa 5755 baaa 5756 \= Expect no match 5757 bb 5758 5759 /(?|(aaa)|(b))/ 5760 xaaa 5761 xbc 5762 5763 /(?|(?'a'aaa)|(?'a'b))\k'a'/ 5764 aaaaaa 5765 bb 5766 5767 /(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/dupnames 5768 aaaccccaaa 5769 bccccb 5770 5771 # /x does not apply to MARK labels 5772 5773 /x (*MARK:ab cd # comment 5774 ef) x/x,mark 5775 axxz 5776 5777 /(?<=a(B){0}c)X/ 5778 acX 5779 5780 /(?<DEFINE>b)(?(DEFINE)(a+))(?&DEFINE)/ 5781 bbbb 5782 \= Expect no match 5783 baaab 5784 5785 /(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*[,;:])(?=.{8,16})(?!.*[\s])/ 5786 \ Fred:099 5787 5788 /(?=.*X)X$/ 5789 \ X 5790 5791 /(?s)(?=.*?)b/ 5792 aabc 5793 5794 /(Z)(a)\2{1,2}?(?-i)\1X/i 5795 ZaAAZX 5796 5797 /(?'c')XX(?'YYYYYYYYYYYYYYYYYYYYYYYCl')/ 5798 5799 /[s[:digit:]\E-H]+/ 5800 s09-H 5801 5802 /[s[:digit:]\Q\E-H]+/ 5803 s09-H 5804 5805 /a+(?:|b)a/ 5806 aaaa 5807 5808 /X?(R||){3335}/ 5809 5810 /(?1)(A(*COMMIT)|B)D/ 5811 ABD 5812 XABD 5813 BAD 5814 ABXABD 5815 \= Expect no match 5816 ABX 5817 5818 /(?(DEFINE)(?<m> 1? (?=(?<cond>2)?) 1 2 (?('cond')|3))) 5819 \A 5820 () 5821 (?&m) 5822 \Z/x 5823 123 5824 5825 /^(?: 5826 (?: A| (1? (?=(?<cond>2)?) (1) 2 (?('cond')|3)) ) 5827 (Z) 5828 )+$/x 5829 AZ123Z 5830 \= Expect no match 5831 AZ12Z 5832 5833 /^ (?(DEFINE) ( (?!(a)\2b)..) ) ()(?1) /x 5834 acb 5835 \= Expect no match 5836 aab 5837 5838 '(?>ab|abab){1,5}?M' 5839 abababababababababababM 5840 5841 '(?>ab|abab){2}?M' 5842 abababM 5843 5844 '((?(?=(a))a)+k)' 5845 bbak 5846 5847 '((?(?=(a))a|)+k)' 5848 bbak 5849 5850 '(?(?!(b))a|b)+k' 5851 ababbalbbadabak 5852 5853 /(?!(b))c|b/ 5854 Ab 5855 Ac 5856 5857 /(?=(b))b|c/ 5858 Ab 5859 Ac 5860 5861 /^(.|(.)(?1)\2)$/ 5862 a 5863 aba 5864 abcba 5865 ababa 5866 abcdcba 5867 5868 /^((.)(?1)\2|.?)$/ 5869 a 5870 aba 5871 abba 5872 abcba 5873 ababa 5874 abccba 5875 abcdcba 5876 abcddcba 5877 5878 /^(.)(\1|a(?2))/ 5879 bab 5880 5881 /^(.|(.)(?1)?\2)$/ 5882 abcba 5883 5884 /^(?(?=(a))abc|def)/ 5885 abc 5886 5887 /^(?(?!(a))def|abc)/ 5888 abc 5889 5890 /^(?(?=(a)(*ACCEPT))abc|def)/ 5891 abc 5892 5893 /^(?(?!(a)(*ACCEPT))def|abc)/ 5894 abc 5895 5896 /^(?1)\d{3}(a)/ 5897 a123a 5898 5899 # This pattern uses a lot of named subpatterns in order to match email 5900 # addresses in various formats. It's a heavy test for named subpatterns. In the 5901 # <atext> group, slash is coded as \x{2f} so that this pattern can also be 5902 # processed by perltest.sh, which does not cater for an escaped delimiter 5903 # within the pattern. $ within the pattern must also be escaped. All $ and @ 5904 # characters in subject strings are escaped so that Perl doesn't interpret them 5905 # as variable insertions and " characters must also be escaped for Perl. 5906 5907 # This set of subpatterns is more or less a direct transliteration of the BNF 5908 # definitions in RFC2822, without any of the obsolete features. The addition of 5909 # a possessive + to the definition of <phrase> reduced the match limit in PCRE2 5910 # from over 5 million to just under 400, and eliminated a very noticeable delay 5911 # when this file was passed to perltest.sh. 5912 5913 /(?ix)(?(DEFINE) 5914 (?<addr_spec> (?&local_part) \@ (?&domain) ) 5915 (?<angle_addr> (?&CFWS)?+ < (?&addr_spec) > (?&CFWS)?+ ) 5916 (?<atext> [a-z\d!#\$%&'*+-\x{2f}=?^_`{|}~] ) 5917 (?<atom> (?&CFWS)?+ (?&atext)+ (?&CFWS)?+ ) 5918 (?<ccontent> (?&ctext) | (?"ed_pair) | (?&comment) ) 5919 (?<ctext> [^\x{9}\x{10}\x{13}\x{7f}-\x{ff}\ ()\\] ) 5920 (?<comment> \( (?: (?&FWS)?+ (?&ccontent) )*+ (?&FWS)?+ \) ) 5921 (?<CFWS> (?: (?&FWS)?+ (?&comment) )* (?# NOT possessive) 5922 (?: (?&FWS)?+ (?&comment) | (?&FWS) ) ) 5923 (?<dcontent> (?&dtext) | (?"ed_pair) ) 5924 (?<display_name> (?&phrase) ) 5925 (?<domain> (?&dot_atom) | (?&domain_literal) ) 5926 (?<domain_literal> (?&CFWS)?+ \[ (?: (?&FWS)?+ (?&dcontent) )* (?&FWS)?+ \] 5927 (?&CFWS)?+ ) 5928 (?<dot_atom> (?&CFWS)?+ (?&dot_atom_text) (?&CFWS)?+ ) 5929 (?<dot_atom_text> (?&atext)++ (?: \. (?&atext)++)*+ ) 5930 (?<dtext> [^\x{9}\x{10}\x{13}\x{7f}-\x{ff}\ \[\]\\] ) 5931 (?<FWS> (?: [\t\ ]*+ \n)?+ [\t\ ]++ ) 5932 (?<local_part> (?&dot_atom) | (?"ed_string) ) 5933 (?<mailbox> (?&name_addr) | (?&addr_spec) ) 5934 (?<name_addr> (?&display_name)? (?&angle_addr) ) 5935 (?<phrase> (?&word)++ ) 5936 (?<qcontent> (?&qtext) | (?"ed_pair) ) 5937 (?<quoted_pair> " (?&text) ) 5938 (?<quoted_string> (?&CFWS)?+ " (?: (?&FWS)?+ (?&qcontent))* (?&FWS)?+ " 5939 (?&CFWS)?+ ) 5940 (?<qtext> [^\x{9}\x{10}\x{13}\x{7f}-\x{ff}\ "\\] ) 5941 (?<text> [^\r\n] ) 5942 (?<word> (?&atom) | (?"ed_string) ) 5943 ) # End DEFINE 5944 ^(?&mailbox)$/ 5945 Alan Other <user\@dom.ain> 5946 <user\@dom.ain> 5947 user\@dom.ain 5948 user\@[] 5949 user\@[domain literal] 5950 user\@[domain literal with \"[square brackets\"] inside] 5951 \"A. Other\" <user.1234\@dom.ain> (a comment) 5952 A. Other <user.1234\@dom.ain> (a comment) 5953 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 5954 \= Expect no match 5955 A missing angle <user\@some.where 5956 The quick brown fox 5957 5958 # -------------------------------------------------------------------------- 5959 5960 # This pattern uses named groups to match default PCRE2 patterns. It's another 5961 # heavy test for named subpatterns. Once again, code slash as \x{2f} and escape 5962 # $ even in classes so that this works with pcre2test. 5963 5964 /(?sx)(?(DEFINE) 5965 5966 (?<assertion> (?&simple_assertion) | (?&lookaround) ) 5967 5968 (?<atomic_group> \( \? > (?®ex) \) ) 5969 5970 (?<back_reference> \\ \d+ | 5971 \\g (?: [+-]?\d+ | \{ (?: [+-]?\d+ | (?&groupname) ) \} ) | 5972 \\k <(?&groupname)> | 5973 \\k '(?&groupname)' | 5974 \\k \{ (?&groupname) \} | 5975 \( \? P= (?&groupname) \) ) 5976 5977 (?<branch> (?:(?&assertion) | 5978 (?&callout) | 5979 (?&comment) | 5980 (?&option_setting) | 5981 (?&qualified_item) | 5982 (?"ed_string) | 5983 (?"ed_string_empty) | 5984 (?&special_escape) | 5985 (?&verb) 5986 )* ) 5987 5988 (?<callout> \(\?C (?: \d+ | 5989 (?: (?<D>["'`^%\#\$]) 5990 (?: \k'D'\k'D' | (?!\k'D') . )* \k'D' | 5991 \{ (?: \}\} | [^}]*+ )* \} ) 5992 )? \) ) 5993 5994 (?<capturing_group> \( (?: \? P? < (?&groupname) > | \? ' (?&groupname) ' )? 5995 (?®ex) \) ) 5996 5997 (?<character_class> \[ \^?+ (?: \] (?&class_item)* | (?&class_item)+ ) \] ) 5998 5999 (?<character_type> (?! \\N\{\w+\} ) \\ [dDsSwWhHvVRN] ) 6000 6001 (?<class_item> (?: \[ : (?: 6002 alnum|alpha|ascii|blank|cntrl|digit|graph|lower|print| 6003 punct|space|upper|word|xdigit 6004 ) : \] | 6005 (?"ed_string) | 6006 (?"ed_string_empty) | 6007 (?&escaped_character) | 6008 (?&character_type) | 6009 [^]] ) ) 6010 6011 (?<comment> \(\?\# [^)]* \) | (?"ed_string_empty) | \\E ) 6012 6013 (?<condition> (?: \( [+-]? \d+ \) | 6014 \( < (?&groupname) > \) | 6015 \( ' (?&groupname) ' \) | 6016 \( R \d* \) | 6017 \( R & (?&groupname) \) | 6018 \( (?&groupname) \) | 6019 \( DEFINE \) | 6020 \( VERSION >?=\d+(?:\.\d\d?)? \) | 6021 (?&callout)?+ (?&comment)* (?&lookaround) ) ) 6022 6023 (?<conditional_group> \(\? (?&condition) (?&branch) (?: \| (?&branch) )? \) ) 6024 6025 (?<delimited_regex> (?<delimiter> [-\x{2f}!"'`=_:;,%&@~]) (?®ex) 6026 \k'delimiter' .* ) 6027 6028 (?<escaped_character> \\ (?: 0[0-7]{1,2} | [0-7]{1,3} | o\{ [0-7]+ \} | 6029 x \{ (*COMMIT) [[:xdigit:]]* \} | x [[:xdigit:]]{0,2} | 6030 [aefnrt] | c[[:print:]] | 6031 [^[:alnum:]] ) ) 6032 6033 (?<group> (?&capturing_group) | (?&non_capturing_group) | 6034 (?&resetting_group) | (?&atomic_group) | 6035 (?&conditional_group) ) 6036 6037 (?<groupname> [a-zA-Z_]\w* ) 6038 6039 (?<literal_character> (?! (?&range_qualifier) ) [^[()|*+?.\$\\] ) 6040 6041 (?<lookaround> \(\? (?: = | ! | <= | <! ) (?®ex) \) ) 6042 6043 (?<non_capturing_group> \(\? [iJmnsUx-]* : (?®ex) \) ) 6044 6045 (?<option_setting> \(\? [iJmnsUx-]* \) ) 6046 6047 (?<qualified_item> (?:\. | 6048 (?&lookaround) | 6049 (?&back_reference) | 6050 (?&character_class) | 6051 (?&character_type) | 6052 (?&escaped_character) | 6053 (?&group) | 6054 (?&subroutine_call) | 6055 (?&literal_character) | 6056 (?"ed_string) 6057 ) (?&comment)? (?&qualifier)? ) 6058 6059 (?<qualifier> (?: [?*+] | (?&range_qualifier) ) [+?]? ) 6060 6061 (?<quoted_string> (?: \\Q (?: (?!\\E | \k'delimiter') . )++ (?: \\E | ) ) ) 6062 6063 (?<quoted_string_empty> \\Q\\E ) 6064 6065 (?<range_qualifier> \{ (?: \d+ (?: , \d* )? | , \d+ ) \} ) 6066 6067 (?<regex> (?&start_item)* (?&branch) (?: \| (?&branch) )* ) 6068 6069 (?<resetting_group> \( \? \| (?®ex) \) ) 6070 6071 (?<simple_assertion> \^ | \$ | \\A | \\b | \\B | \\G | \\z | \\Z ) 6072 6073 (?<special_escape> \\K ) 6074 6075 (?<start_item> \( \* (?: 6076 ANY | 6077 ANYCRLF | 6078 BSR_ANYCRLF | 6079 BSR_UNICODE | 6080 CR | 6081 CRLF | 6082 LF | 6083 LIMIT_MATCH=\d+ | 6084 LIMIT_DEPTH=\d+ | 6085 LIMIT_HEAP=\d+ | 6086 NOTEMPTY | 6087 NOTEMPTY_ATSTART | 6088 NO_AUTO_POSSESS | 6089 NO_DOTSTAR_ANCHOR | 6090 NO_JIT | 6091 NO_START_OPT | 6092 NUL | 6093 UTF | 6094 UCP ) \) ) 6095 6096 (?<subroutine_call> (?: \(\?R\) | \(\?[+-]?\d+\) | 6097 \(\? (?: & | P> ) (?&groupname) \) | 6098 \\g < (?&groupname) > | 6099 \\g ' (?&groupname) ' | 6100 \\g < [+-]? \d+ > | 6101 \\g ' [+-]? \d+ ) ) 6102 6103 (?<verb> \(\* (?: ACCEPT | FAIL | F | COMMIT | 6104 (?:MARK)?:(?&verbname) | 6105 (?:PRUNE|SKIP|THEN) (?: : (?&verbname)? )? ) \) ) 6106 6107 (?<verbname> [^)]+ ) 6108 6109 ) # End DEFINE 6110 # Kick it all off... 6111 ^(?&delimited_regex)$/subject_literal,jitstack=256 6112 /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/ 6113 /(cat(a(ract|tonic)|erpillar)) \1()2(3)/ 6114 /^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]/ 6115 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/ 6116 /<tr([\w\W\s\d][^<>]{0,})><TD([\w\W\s\d][^<>]{0,})>([\d]{0,}\.)(.*)((<BR>([\w\W\s\d][^<>]{0,})|[\s]{0,}))<\/a><\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><\/TR>/is 6117 /^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) / 6118 /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/ 6119 /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/ 6120 /^(\w++|\s++)*$/ 6121 /a+b?(*THEN)c+(*FAIL)/ 6122 /(A (A|B(*ACCEPT)|C) D)(E)/x 6123 /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i 6124 /A(*PRUNE)B(*SKIP)C(*THEN)D(*COMMIT)E(*F)F(*FAIL)G(?!)H(*ACCEPT)I/B 6125 /(?C`a``b`)(?C'a''b')(?C"a""b")(?C^a^^b^)(?C%a%%b%)(?C#a##b#)(?C$a$$b$)(?C{a}}b})/B,callout_info 6126 /(?sx)(?(DEFINE)(?<assertion> (?&simple_assertion) | (?&lookaround) )(?<atomic_group> \( \? > (?®ex) \) )(?<back_reference> \\ \d+ | \\g (?: [+-]?\d+ | \{ (?: [+-]?\d+ | (?&groupname) ) \} ) | \\k <(?&groupname)> | \\k '(?&groupname)' | \\k \{ (?&groupname) \} | \( \? P= (?&groupname) \) )(?<branch> (?:(?&assertion) | (?&callout) | (?&comment) | (?&option_setting) | (?&qualified_item) | (?"ed_string) | (?"ed_string_empty) | (?&special_escape) | (?&verb) )* )(?<callout> \(\?C (?: \d+ | (?: (?<D>["'`^%\#\$]) (?: \k'D'\k'D' | (?!\k'D') . )* \k'D' | \{ (?: \}\} | [^}]*+ )* \} ) )? \) )(?<capturing_group> \( (?: \? P? < (?&groupname) > | \? ' (?&groupname) ' )? (?®ex) \) )(?<character_class> \[ \^?+ (?: \] (?&class_item)* | (?&class_item)+ ) \] )(?<character_type> (?! \\N\{\w+\} ) \\ [dDsSwWhHvVRN] )(?<class_item> (?: \[ : (?: alnum|alpha|ascii|blank|cntrl|digit|graph|lower|print| punct|space|upper|word|xdigit ) : \] | (?"ed_string) | (?"ed_string_empty) | (?&escaped_character) | (?&character_type) | [^]] ) )(?<comment> \(\?\# [^)]* \) | (?"ed_string_empty) | \\E )(?<condition> (?: \( [+-]? \d+ \) | \( < (?&groupname) > \) | \( ' (?&groupname) ' \) | \( R \d* \) | \( R & (?&groupname) \) | \( (?&groupname) \) | \( DEFINE \) | \( VERSION >?=\d+(?:\.\d\d?)? \) | (?&callout)?+ (?&comment)* (?&lookaround) ) )(?<conditional_group> \(\? (?&condition) (?&branch) (?: \| (?&branch) )? \) )(?<delimited_regex> (?<delimiter> [-\x{2f}!"'`=_:;,%&@~]) (?®ex) \k'delimiter' .* )(?<escaped_character> \\ (?: 0[0-7]{1,2} | [0-7]{1,3} | o\{ [0-7]+ \} | x \{ (*COMMIT) [[:xdigit:]]* \} | x [[:xdigit:]]{0,2} | [aefnrt] | c[[:print:]] | [^[:alnum:]] ) )(?<group> (?&capturing_group) | (?&non_capturing_group) | (?&resetting_group) | (?&atomic_group) | (?&conditional_group) )(?<groupname> [a-zA-Z_]\w* )(?<literal_character> (?! (?&range_qualifier) ) [^[()|*+?.\$\\] )(?<lookaround> \(\? (?: = | ! | <= | <! ) (?®ex) \) )(?<non_capturing_group> \(\? [iJmnsUx-]* : (?®ex) \) )(?<option_setting> \(\? [iJmnsUx-]* \) )(?<qualified_item> (?:\. | (?&lookaround) | (?&back_reference) | (?&character_class) | (?&character_type) | (?&escaped_character) | (?&group) | (?&subroutine_call) | (?&literal_character) | (?"ed_string) ) (?&comment)? (?&qualifier)? )(?<qualifier> (?: [?*+] | (?&range_qualifier) ) [+?]? )(?<quoted_string> (?: \\Q (?: (?!\\E | \k'delimiter') . )++ (?: \\E | ) ) ) (?<quoted_string_empty> \\Q\\E ) (?<range_qualifier> \{ (?: \d+ (?: , \d* )? | , \d+ ) \} )(?<regex> (?&start_item)* (?&branch) (?: \| (?&branch) )* )(?<resetting_group> \( \? \| (?®ex) \) )(?<simple_assertion> \^ | \$ | \\A | \\b | \\B | \\G | \\z | \\Z )(?<special_escape> \\K )(?<start_item> \( \* (?: ANY | ANYCRLF | BSR_ANYCRLF | BSR_UNICODE | CR | CRLF | LF | LIMIT_MATCH=\d+ | LIMIT_DEPTH=\d+ | LIMIT_HEAP=\d+ | NOTEMPTY | NOTEMPTY_ATSTART | NO_AUTO_POSSESS | NO_DOTSTAR_ANCHOR | NO_JIT | NO_START_OPT | NUL | UTF | UCP ) \) )(?<subroutine_call> (?: \(\?R\) | \(\?[+-]?\d+\) | \(\? (?: & | P> ) (?&groupname) \) | \\g < (?&groupname) > | \\g ' (?&groupname) ' | \\g < [+-]? \d+ > | \\g ' [+-]? \d+ ) )(?<verb> \(\* (?: ACCEPT | FAIL | F | COMMIT | (?:MARK)?:(?&verbname) | (?:PRUNE|SKIP|THEN) (?: : (?&verbname)? )? ) \) )(?<verbname> [^)]+ ))^(?&delimited_regex)$/ 6127 \= Expect no match 6128 /((?(?C'')\QX\E(?!((?(?C'')(?!X=X));=)r*X=X));=)/ 6129 /(?:(?(2y)a|b)(X))+/ 6130 /a(*MARK)b/ 6131 /a(*CR)b/ 6132 /(?P<abn>(?P=abn)(?<badstufxxx)/ 6133 6134 # -------------------------------------------------------------------------- 6135 6136 /<(?x:[a b])>/xx 6137 < > 6138 6139 /<(?:[a b])>/xx 6140 < > 6141 6142 /<(?xxx:[a b])>/ 6143 < > 6144 6145 /<(?-x:[a b])>/xx 6146 < > 6147 6148 /[[:digit:]-]+/ 6149 12-24 6150 6151 /((?<=((*ACCEPT)) )\1?\b) / 6152 \= Expect no match 6153 ((?<=((*ACCEPT)) )\\1?\\b)\x20 6154 6155 /((?<=((*ACCEPT))X)\1?Y)\1/ 6156 XYYZ 6157 6158 /((?<=((*ACCEPT))X)\1?Y(*ACCEPT))\1/ 6159 XYYZ 6160 6161 /(?(DEFINE)(?<optional_a>a?)X)^(?&optional_a)a$/ 6162 aa 6163 a 6164 6165 /^(a?)b(?1)a/ 6166 abaa 6167 aba 6168 baa 6169 ba 6170 6171 /^(a?)+b(?1)a/ 6172 abaa 6173 aba 6174 baa 6175 ba 6176 6177 /^(a?)++b(?1)a/ 6178 abaa 6179 aba 6180 baa 6181 ba 6182 6183 /^(a?)+b/ 6184 b 6185 ab 6186 aaab 6187 6188 /(?=a+)a(a+)++b/ 6189 aab 6190 6191 /(?<=\G.)/g,aftertext 6192 abc 6193 6194 /(?<=(?=.)?)/ 6195 6196 /(?<=(?=.)?+)/ 6197 6198 /(?<=(?=.)*)/ 6199 6200 /(?<=(?=.){4,5})/ 6201 6202 /(?<=(?=.){4,5}x)/ 6203 6204 /a(?=.(*:X))(*SKIP:X)(*F)|(.)/ 6205 abc 6206 6207 /a(?>(*:X))(*SKIP:X)(*F)|(.)/ 6208 abc 6209 6210 /a(?:(*:X))(*SKIP:X)(*F)|(.)/ 6211 abc 6212 6213 #pattern no_start_optimize 6214 6215 /(?>a(*:1))(?>b(*:1))(*SKIP:1)x|.*/ 6216 abc 6217 6218 /(?>a(*:1))(?>b)(*SKIP:1)x|.*/ 6219 abc 6220 6221 #subject mark 6222 6223 /a(*ACCEPT:X)b/ 6224 abc 6225 6226 /(?=a(*ACCEPT:QQ)bc)axyz/ 6227 axyz 6228 6229 /(?(DEFINE)(a(*ACCEPT:X)))(?1)b/ 6230 abc 6231 6232 /a(*F:X)b/ 6233 abc 6234 6235 /(?(DEFINE)(a(*F:X)))(?1)b/ 6236 abc 6237 6238 /a(*COMMIT:X)b/ 6239 abc 6240 6241 /(?(DEFINE)(a(*COMMIT:X)))(?1)b/ 6242 abc 6243 6244 /a+(*:Z)b(*COMMIT:X)(*SKIP:Z)c|.*/ 6245 aaaabd 6246 6247 /a+(*:Z)b(*COMMIT:X)(*SKIP:X)c|.*/ 6248 aaaabd 6249 6250 /a(*COMMIT:X)b/ 6251 axabc 6252 6253 #pattern -no_start_optimize 6254 #subject -mark 6255 6256 /(.COMMIT)(*COMMIT::::::::::interal error:::)/ 6257 6258 /(*COMMIT:)/ 6259 6260 /(*COMMIT:]w)/ 6261 6262 /(?i)A(?^)B(?^x:C D)(?^i)e f/ 6263 aBCDE F 6264 \= Expect no match 6265 aBCDEF 6266 AbCDe f 6267 6268 # End of testinput1 6269
