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 0: the quick brown fox 12 What do you know about the quick brown fox? 13 0: the quick brown fox 14 \= Expect no match 15 The quick brown FOX 16 No match 17 What do you know about THE QUICK BROWN FOX? 18 No match 19 20 /The quick brown fox/i 21 the quick brown fox 22 0: the quick brown fox 23 The quick brown FOX 24 0: The quick brown FOX 25 What do you know about the quick brown fox? 26 0: the quick brown fox 27 What do you know about THE QUICK BROWN FOX? 28 0: THE QUICK BROWN FOX 29 30 /abcd\t\n\r\f\a\e\071\x3b\$\\\?caxyz/ 31 abcd\t\n\r\f\a\e9;\$\\?caxyz 32 0: abcd\x09\x0a\x0d\x0c\x07\x1b9;$\?caxyz 33 34 /a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz/ 35 abxyzpqrrrabbxyyyypqAzz 36 0: abxyzpqrrrabbxyyyypqAzz 37 abxyzpqrrrabbxyyyypqAzz 38 0: abxyzpqrrrabbxyyyypqAzz 39 aabxyzpqrrrabbxyyyypqAzz 40 0: aabxyzpqrrrabbxyyyypqAzz 41 aaabxyzpqrrrabbxyyyypqAzz 42 0: aaabxyzpqrrrabbxyyyypqAzz 43 aaaabxyzpqrrrabbxyyyypqAzz 44 0: aaaabxyzpqrrrabbxyyyypqAzz 45 abcxyzpqrrrabbxyyyypqAzz 46 0: abcxyzpqrrrabbxyyyypqAzz 47 aabcxyzpqrrrabbxyyyypqAzz 48 0: aabcxyzpqrrrabbxyyyypqAzz 49 aaabcxyzpqrrrabbxyyyypAzz 50 0: aaabcxyzpqrrrabbxyyyypAzz 51 aaabcxyzpqrrrabbxyyyypqAzz 52 0: aaabcxyzpqrrrabbxyyyypqAzz 53 aaabcxyzpqrrrabbxyyyypqqAzz 54 0: aaabcxyzpqrrrabbxyyyypqqAzz 55 aaabcxyzpqrrrabbxyyyypqqqAzz 56 0: aaabcxyzpqrrrabbxyyyypqqqAzz 57 aaabcxyzpqrrrabbxyyyypqqqqAzz 58 0: aaabcxyzpqrrrabbxyyyypqqqqAzz 59 aaabcxyzpqrrrabbxyyyypqqqqqAzz 60 0: aaabcxyzpqrrrabbxyyyypqqqqqAzz 61 aaabcxyzpqrrrabbxyyyypqqqqqqAzz 62 0: aaabcxyzpqrrrabbxyyyypqqqqqqAzz 63 aaaabcxyzpqrrrabbxyyyypqAzz 64 0: aaaabcxyzpqrrrabbxyyyypqAzz 65 abxyzzpqrrrabbxyyyypqAzz 66 0: abxyzzpqrrrabbxyyyypqAzz 67 aabxyzzzpqrrrabbxyyyypqAzz 68 0: aabxyzzzpqrrrabbxyyyypqAzz 69 aaabxyzzzzpqrrrabbxyyyypqAzz 70 0: aaabxyzzzzpqrrrabbxyyyypqAzz 71 aaaabxyzzzzpqrrrabbxyyyypqAzz 72 0: aaaabxyzzzzpqrrrabbxyyyypqAzz 73 abcxyzzpqrrrabbxyyyypqAzz 74 0: abcxyzzpqrrrabbxyyyypqAzz 75 aabcxyzzzpqrrrabbxyyyypqAzz 76 0: aabcxyzzzpqrrrabbxyyyypqAzz 77 aaabcxyzzzzpqrrrabbxyyyypqAzz 78 0: aaabcxyzzzzpqrrrabbxyyyypqAzz 79 aaaabcxyzzzzpqrrrabbxyyyypqAzz 80 0: aaaabcxyzzzzpqrrrabbxyyyypqAzz 81 aaaabcxyzzzzpqrrrabbbxyyyypqAzz 82 0: aaaabcxyzzzzpqrrrabbbxyyyypqAzz 83 aaaabcxyzzzzpqrrrabbbxyyyyypqAzz 84 0: aaaabcxyzzzzpqrrrabbbxyyyyypqAzz 85 aaabcxyzpqrrrabbxyyyypABzz 86 0: aaabcxyzpqrrrabbxyyyypABzz 87 aaabcxyzpqrrrabbxyyyypABBzz 88 0: aaabcxyzpqrrrabbxyyyypABBzz 89 >>>aaabxyzpqrrrabbxyyyypqAzz 90 0: aaabxyzpqrrrabbxyyyypqAzz 91 >aaaabxyzpqrrrabbxyyyypqAzz 92 0: aaaabxyzpqrrrabbxyyyypqAzz 93 >>>>abcxyzpqrrrabbxyyyypqAzz 94 0: abcxyzpqrrrabbxyyyypqAzz 95 \= Expect no match 96 abxyzpqrrabbxyyyypqAzz 97 No match 98 abxyzpqrrrrabbxyyyypqAzz 99 No match 100 abxyzpqrrrabxyyyypqAzz 101 No match 102 aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz 103 No match 104 aaaabcxyzzzzpqrrrabbbxyyypqAzz 105 No match 106 aaabcxyzpqrrrabbxyyyypqqqqqqqAzz 107 No match 108 109 /^(abc){1,2}zz/ 110 abczz 111 0: abczz 112 1: abc 113 abcabczz 114 0: abcabczz 115 1: abc 116 \= Expect no match 117 zz 118 No match 119 abcabcabczz 120 No match 121 >>abczz 122 No match 123 124 /^(b+?|a){1,2}?c/ 125 bc 126 0: bc 127 1: b 128 bbc 129 0: bbc 130 1: b 131 bbbc 132 0: bbbc 133 1: bb 134 bac 135 0: bac 136 1: a 137 bbac 138 0: bbac 139 1: a 140 aac 141 0: aac 142 1: a 143 abbbbbbbbbbbc 144 0: abbbbbbbbbbbc 145 1: bbbbbbbbbbb 146 bbbbbbbbbbbac 147 0: bbbbbbbbbbbac 148 1: a 149 \= Expect no match 150 aaac 151 No match 152 abbbbbbbbbbbac 153 No match 154 155 /^(b+|a){1,2}c/ 156 bc 157 0: bc 158 1: b 159 bbc 160 0: bbc 161 1: bb 162 bbbc 163 0: bbbc 164 1: bbb 165 bac 166 0: bac 167 1: a 168 bbac 169 0: bbac 170 1: a 171 aac 172 0: aac 173 1: a 174 abbbbbbbbbbbc 175 0: abbbbbbbbbbbc 176 1: bbbbbbbbbbb 177 bbbbbbbbbbbac 178 0: bbbbbbbbbbbac 179 1: a 180 \= Expect no match 181 aaac 182 No match 183 abbbbbbbbbbbac 184 No match 185 186 /^(b+|a){1,2}?bc/ 187 bbc 188 0: bbc 189 1: b 190 191 /^(b*|ba){1,2}?bc/ 192 babc 193 0: babc 194 1: ba 195 bbabc 196 0: bbabc 197 1: ba 198 bababc 199 0: bababc 200 1: ba 201 \= Expect no match 202 bababbc 203 No match 204 babababc 205 No match 206 207 /^(ba|b*){1,2}?bc/ 208 babc 209 0: babc 210 1: ba 211 bbabc 212 0: bbabc 213 1: ba 214 bababc 215 0: bababc 216 1: ba 217 \= Expect no match 218 bababbc 219 No match 220 babababc 221 No match 222 223 /^\ca\cA\c[;\c:/ 224 \x01\x01\e;z 225 0: \x01\x01\x1b;z 226 227 /^[ab\]cde]/ 228 athing 229 0: a 230 bthing 231 0: b 232 ]thing 233 0: ] 234 cthing 235 0: c 236 dthing 237 0: d 238 ething 239 0: e 240 \= Expect no match 241 fthing 242 No match 243 [thing 244 No match 245 \\thing 246 No match 247 248 /^[]cde]/ 249 ]thing 250 0: ] 251 cthing 252 0: c 253 dthing 254 0: d 255 ething 256 0: e 257 \= Expect no match 258 athing 259 No match 260 fthing 261 No match 262 263 /^[^ab\]cde]/ 264 fthing 265 0: f 266 [thing 267 0: [ 268 \\thing 269 0: \ 270 \= Expect no match 271 athing 272 No match 273 bthing 274 No match 275 ]thing 276 No match 277 cthing 278 No match 279 dthing 280 No match 281 ething 282 No match 283 284 /^[^]cde]/ 285 athing 286 0: a 287 fthing 288 0: f 289 \= Expect no match 290 ]thing 291 No match 292 cthing 293 No match 294 dthing 295 No match 296 ething 297 No match 298 299 /^\/ 300 301 0: \x81 302 303 /^/ 304 305 0: \xff 306 307 /^[0-9]+$/ 308 0 309 0: 0 310 1 311 0: 1 312 2 313 0: 2 314 3 315 0: 3 316 4 317 0: 4 318 5 319 0: 5 320 6 321 0: 6 322 7 323 0: 7 324 8 325 0: 8 326 9 327 0: 9 328 10 329 0: 10 330 100 331 0: 100 332 \= Expect no match 333 abc 334 No match 335 336 /^.*nter/ 337 enter 338 0: enter 339 inter 340 0: inter 341 uponter 342 0: uponter 343 344 /^xxx[0-9]+$/ 345 xxx0 346 0: xxx0 347 xxx1234 348 0: xxx1234 349 \= Expect no match 350 xxx 351 No match 352 353 /^.+[0-9][0-9][0-9]$/ 354 x123 355 0: x123 356 x1234 357 0: x1234 358 xx123 359 0: xx123 360 123456 361 0: 123456 362 \= Expect no match 363 123 364 No match 365 366 /^.+?[0-9][0-9][0-9]$/ 367 x123 368 0: x123 369 x1234 370 0: x1234 371 xx123 372 0: xx123 373 123456 374 0: 123456 375 \= Expect no match 376 123 377 No match 378 379 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/ 380 abc!pqr=apquxz.ixr.zzz.ac.uk 381 0: abc!pqr=apquxz.ixr.zzz.ac.uk 382 1: abc 383 2: pqr 384 \= Expect no match 385 !pqr=apquxz.ixr.zzz.ac.uk 386 No match 387 abc!=apquxz.ixr.zzz.ac.uk 388 No match 389 abc!pqr=apquxz:ixr.zzz.ac.uk 390 No match 391 abc!pqr=apquxz.ixr.zzz.ac.ukk 392 No match 393 394 /:/ 395 Well, we need a colon: somewhere 396 0: : 397 \= Expect no match 398 Fail without a colon 399 No match 400 401 /([\da-f:]+)$/i 402 0abc 403 0: 0abc 404 1: 0abc 405 abc 406 0: abc 407 1: abc 408 fed 409 0: fed 410 1: fed 411 E 412 0: E 413 1: E 414 :: 415 0: :: 416 1: :: 417 5f03:12C0::932e 418 0: 5f03:12C0::932e 419 1: 5f03:12C0::932e 420 fed def 421 0: def 422 1: def 423 Any old stuff 424 0: ff 425 1: ff 426 \= Expect no match 427 0zzz 428 No match 429 gzzz 430 No match 431 fed\x20 432 No match 433 Any old rubbish 434 No match 435 436 /^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ 437 .1.2.3 438 0: .1.2.3 439 1: 1 440 2: 2 441 3: 3 442 A.12.123.0 443 0: A.12.123.0 444 1: 12 445 2: 123 446 3: 0 447 \= Expect no match 448 .1.2.3333 449 No match 450 1.2.3 451 No match 452 1234.2.3 453 No match 454 455 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 456 1 IN SOA non-sp1 non-sp2( 457 0: 1 IN SOA non-sp1 non-sp2( 458 1: 1 459 2: non-sp1 460 3: non-sp2 461 1 IN SOA non-sp1 non-sp2 ( 462 0: 1 IN SOA non-sp1 non-sp2 ( 463 1: 1 464 2: non-sp1 465 3: non-sp2 466 \= Expect no match 467 1IN SOA non-sp1 non-sp2( 468 No match 469 470 /^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/ 471 a. 472 0: a. 473 Z. 474 0: Z. 475 2. 476 0: 2. 477 ab-c.pq-r. 478 0: ab-c.pq-r. 479 1: .pq-r 480 sxk.zzz.ac.uk. 481 0: sxk.zzz.ac.uk. 482 1: .uk 483 x-.y-. 484 0: x-.y-. 485 1: .y- 486 \= Expect no match 487 -abc.peq. 488 No match 489 490 /^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/ 491 *.a 492 0: *.a 493 *.b0-a 494 0: *.b0-a 495 1: 0-a 496 *.c3-b.c 497 0: *.c3-b.c 498 1: 3-b 499 2: .c 500 *.c-a.b-c 501 0: *.c-a.b-c 502 1: -a 503 2: .b-c 504 3: -c 505 \= Expect no match 506 *.0 507 No match 508 *.a- 509 No match 510 *.a-b.c- 511 No match 512 *.c-a.0-c 513 No match 514 515 /^(?=ab(de))(abd)(e)/ 516 abde 517 0: abde 518 1: de 519 2: abd 520 3: e 521 522 /^(?!(ab)de|x)(abd)(f)/ 523 abdf 524 0: abdf 525 1: <unset> 526 2: abd 527 3: f 528 529 /^(?=(ab(cd)))(ab)/ 530 abcd 531 0: ab 532 1: abcd 533 2: cd 534 3: ab 535 536 /^[\da-f](\.[\da-f])*$/i 537 a.b.c.d 538 0: a.b.c.d 539 1: .d 540 A.B.C.D 541 0: A.B.C.D 542 1: .D 543 a.b.c.1.2.3.C 544 0: a.b.c.1.2.3.C 545 1: .C 546 547 /^\".*\"\s*(;.*)?$/ 548 \"1234\" 549 0: "1234" 550 \"abcd\" ; 551 0: "abcd" ; 552 1: ; 553 \"\" ; rhubarb 554 0: "" ; rhubarb 555 1: ; rhubarb 556 \= Expect no match 557 \"1234\" : things 558 No match 559 560 /^$/ 561 \ 562 0: 563 \= Expect no match 564 A non-empty line 565 No match 566 567 / ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/x 568 ab c 569 0: ab c 570 \= Expect no match 571 abc 572 No match 573 ab cde 574 No match 575 576 /(?x) ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/ 577 ab c 578 0: ab c 579 \= Expect no match 580 abc 581 No match 582 ab cde 583 No match 584 585 /^ a\ b[c ]d $/x 586 a bcd 587 0: a bcd 588 a b d 589 0: a b d 590 \= Expect no match 591 abcd 592 No match 593 ab d 594 No match 595 596 /^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$/ 597 abcdefhijklm 598 0: abcdefhijklm 599 1: abc 600 2: bc 601 3: c 602 4: def 603 5: ef 604 6: f 605 7: hij 606 8: ij 607 9: j 608 10: klm 609 11: lm 610 12: m 611 612 /^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$/ 613 abcdefhijklm 614 0: abcdefhijklm 615 1: bc 616 2: c 617 3: ef 618 4: f 619 5: ij 620 6: j 621 7: lm 622 8: m 623 624 /^[\w][\W][\s][\S][\d][\D][\b][\n][\c]][\022]/ 625 a+ Z0+\x08\n\x1d\x12 626 0: a+ Z0+\x08\x0a\x1d\x12 627 628 /^[.^$|()*+?{,}]+/ 629 .^\$(*+)|{?,?} 630 0: .^$(*+)|{?,?} 631 632 /^a*\w/ 633 z 634 0: z 635 az 636 0: az 637 aaaz 638 0: aaaz 639 a 640 0: a 641 aa 642 0: aa 643 aaaa 644 0: aaaa 645 a+ 646 0: a 647 aa+ 648 0: aa 649 650 /^a*?\w/ 651 z 652 0: z 653 az 654 0: a 655 aaaz 656 0: a 657 a 658 0: a 659 aa 660 0: a 661 aaaa 662 0: a 663 a+ 664 0: a 665 aa+ 666 0: a 667 668 /^a+\w/ 669 az 670 0: az 671 aaaz 672 0: aaaz 673 aa 674 0: aa 675 aaaa 676 0: aaaa 677 aa+ 678 0: aa 679 680 /^a+?\w/ 681 az 682 0: az 683 aaaz 684 0: aa 685 aa 686 0: aa 687 aaaa 688 0: aa 689 aa+ 690 0: aa 691 692 /^\d{8}\w{2,}/ 693 1234567890 694 0: 1234567890 695 12345678ab 696 0: 12345678ab 697 12345678__ 698 0: 12345678__ 699 \= Expect no match 700 1234567 701 No match 702 703 /^[aeiou\d]{4,5}$/ 704 uoie 705 0: uoie 706 1234 707 0: 1234 708 12345 709 0: 12345 710 aaaaa 711 0: aaaaa 712 \= Expect no match 713 123456 714 No match 715 716 /^[aeiou\d]{4,5}?/ 717 uoie 718 0: uoie 719 1234 720 0: 1234 721 12345 722 0: 1234 723 aaaaa 724 0: aaaa 725 123456 726 0: 1234 727 728 /\A(abc|def)=(\1){2,3}\Z/ 729 abc=abcabc 730 0: abc=abcabc 731 1: abc 732 2: abc 733 def=defdefdef 734 0: def=defdefdef 735 1: def 736 2: def 737 \= Expect no match 738 abc=defdef 739 No match 740 741 /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/ 742 abcdefghijkcda2 743 0: abcdefghijkcda2 744 1: a 745 2: b 746 3: c 747 4: d 748 5: e 749 6: f 750 7: g 751 8: h 752 9: i 753 10: j 754 11: k 755 12: cd 756 abcdefghijkkkkcda2 757 0: abcdefghijkkkkcda2 758 1: a 759 2: b 760 3: c 761 4: d 762 5: e 763 6: f 764 7: g 765 8: h 766 9: i 767 10: j 768 11: k 769 12: cd 770 771 /(cat(a(ract|tonic)|erpillar)) \1()2(3)/ 772 cataract cataract23 773 0: cataract cataract23 774 1: cataract 775 2: aract 776 3: ract 777 4: 778 5: 3 779 catatonic catatonic23 780 0: catatonic catatonic23 781 1: catatonic 782 2: atonic 783 3: tonic 784 4: 785 5: 3 786 caterpillar caterpillar23 787 0: caterpillar caterpillar23 788 1: caterpillar 789 2: erpillar 790 3: <unset> 791 4: 792 5: 3 793 794 795 /^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]/ 796 From abcd Mon Sep 01 12:33:02 1997 797 0: From abcd Mon Sep 01 12:33 798 1: abcd 799 800 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/ 801 From abcd Mon Sep 01 12:33:02 1997 802 0: From abcd Mon Sep 01 12:33 803 1: Sep 804 From abcd Mon Sep 1 12:33:02 1997 805 0: From abcd Mon Sep 1 12:33 806 1: Sep 807 \= Expect no match 808 From abcd Sep 01 12:33:02 1997 809 No match 810 811 /^12.34/s 812 12\n34 813 0: 12\x0a34 814 12\r34 815 0: 12\x0d34 816 817 /\w+(?=\t)/ 818 the quick brown\t fox 819 0: brown 820 821 /foo(?!bar)(.*)/ 822 foobar is foolish see? 823 0: foolish see? 824 1: lish see? 825 826 /(?:(?!foo)...|^.{0,2})bar(.*)/ 827 foobar crowbar etc 828 0: rowbar etc 829 1: etc 830 barrel 831 0: barrel 832 1: rel 833 2barrel 834 0: 2barrel 835 1: rel 836 A barrel 837 0: A barrel 838 1: rel 839 840 /^(\D*)(?=\d)(?!123)/ 841 abc456 842 0: abc 843 1: abc 844 \= Expect no match 845 abc123 846 No match 847 848 /^1234(?# test newlines 849 inside)/ 850 1234 851 0: 1234 852 853 /^1234 #comment in extended re 854 /x 855 1234 856 0: 1234 857 858 /#rhubarb 859 abcd/x 860 abcd 861 0: abcd 862 863 /^abcd#rhubarb/x 864 abcd 865 0: abcd 866 867 /^(a)\1{2,3}(.)/ 868 aaab 869 0: aaab 870 1: a 871 2: b 872 aaaab 873 0: aaaab 874 1: a 875 2: b 876 aaaaab 877 0: aaaaa 878 1: a 879 2: a 880 aaaaaab 881 0: aaaaa 882 1: a 883 2: a 884 885 /(?!^)abc/ 886 the abc 887 0: abc 888 \= Expect no match 889 abc 890 No match 891 892 /(?=^)abc/ 893 abc 894 0: abc 895 \= Expect no match 896 the abc 897 No match 898 899 /^[ab]{1,3}(ab*|b)/ 900 aabbbbb 901 0: aabb 902 1: b 903 904 /^[ab]{1,3}?(ab*|b)/ 905 aabbbbb 906 0: aabbbbb 907 1: abbbbb 908 909 /^[ab]{1,3}?(ab*?|b)/ 910 aabbbbb 911 0: aa 912 1: a 913 914 /^[ab]{1,3}(ab*?|b)/ 915 aabbbbb 916 0: aabb 917 1: b 918 919 / (?: [\040\t] | \( 920 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 921 \) )* # optional leading comment 922 (?: (?: 923 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 924 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 925 | 926 " (?: # opening quote... 927 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 928 | # or 929 \\ [^\x80-\xff] # Escaped something (something != CR) 930 )* " # closing quote 931 ) # initial word 932 (?: (?: [\040\t] | \( 933 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 934 \) )* \. (?: [\040\t] | \( 935 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 936 \) )* (?: 937 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 938 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 939 | 940 " (?: # opening quote... 941 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 942 | # or 943 \\ [^\x80-\xff] # Escaped something (something != CR) 944 )* " # closing quote 945 ) )* # further okay, if led by a period 946 (?: [\040\t] | \( 947 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 948 \) )* @ (?: [\040\t] | \( 949 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 950 \) )* (?: 951 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 952 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 953 | \[ # [ 954 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 955 \] # ] 956 ) # initial subdomain 957 (?: # 958 (?: [\040\t] | \( 959 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 960 \) )* \. # if led by a period... 961 (?: [\040\t] | \( 962 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 963 \) )* (?: 964 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 965 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 966 | \[ # [ 967 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 968 \] # ] 969 ) # ...further okay 970 )* 971 # address 972 | # or 973 (?: 974 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 975 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 976 | 977 " (?: # opening quote... 978 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 979 | # or 980 \\ [^\x80-\xff] # Escaped something (something != CR) 981 )* " # closing quote 982 ) # one word, optionally followed by.... 983 (?: 984 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] | # atom and space parts, or... 985 \( 986 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 987 \) | # comments, or... 988 989 " (?: # opening quote... 990 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 991 | # or 992 \\ [^\x80-\xff] # Escaped something (something != CR) 993 )* " # closing quote 994 # quoted strings 995 )* 996 < (?: [\040\t] | \( 997 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 998 \) )* # leading < 999 (?: @ (?: [\040\t] | \( 1000 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1001 \) )* (?: 1002 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1003 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1004 | \[ # [ 1005 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1006 \] # ] 1007 ) # initial subdomain 1008 (?: # 1009 (?: [\040\t] | \( 1010 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1011 \) )* \. # if led by a period... 1012 (?: [\040\t] | \( 1013 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1014 \) )* (?: 1015 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1016 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1017 | \[ # [ 1018 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1019 \] # ] 1020 ) # ...further okay 1021 )* 1022 1023 (?: (?: [\040\t] | \( 1024 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1025 \) )* , (?: [\040\t] | \( 1026 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1027 \) )* @ (?: [\040\t] | \( 1028 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1029 \) )* (?: 1030 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1031 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1032 | \[ # [ 1033 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1034 \] # ] 1035 ) # initial subdomain 1036 (?: # 1037 (?: [\040\t] | \( 1038 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1039 \) )* \. # if led by a period... 1040 (?: [\040\t] | \( 1041 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1042 \) )* (?: 1043 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1044 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1045 | \[ # [ 1046 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1047 \] # ] 1048 ) # ...further okay 1049 )* 1050 )* # further okay, if led by comma 1051 : # closing colon 1052 (?: [\040\t] | \( 1053 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1054 \) )* )? # optional route 1055 (?: 1056 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1057 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1058 | 1059 " (?: # opening quote... 1060 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1061 | # or 1062 \\ [^\x80-\xff] # Escaped something (something != CR) 1063 )* " # closing quote 1064 ) # initial word 1065 (?: (?: [\040\t] | \( 1066 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1067 \) )* \. (?: [\040\t] | \( 1068 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1069 \) )* (?: 1070 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1071 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1072 | 1073 " (?: # opening quote... 1074 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1075 | # or 1076 \\ [^\x80-\xff] # Escaped something (something != CR) 1077 )* " # closing quote 1078 ) )* # further okay, if led by a period 1079 (?: [\040\t] | \( 1080 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1081 \) )* @ (?: [\040\t] | \( 1082 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1083 \) )* (?: 1084 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1085 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1086 | \[ # [ 1087 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1088 \] # ] 1089 ) # initial subdomain 1090 (?: # 1091 (?: [\040\t] | \( 1092 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1093 \) )* \. # if led by a period... 1094 (?: [\040\t] | \( 1095 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1096 \) )* (?: 1097 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1098 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1099 | \[ # [ 1100 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1101 \] # ] 1102 ) # ...further okay 1103 )* 1104 # address spec 1105 (?: [\040\t] | \( 1106 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1107 \) )* > # trailing > 1108 # name and address 1109 ) (?: [\040\t] | \( 1110 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1111 \) )* # optional trailing comment 1112 /x 1113 Alan Other <user\@dom.ain> 1114 0: Alan Other <user (a] dom.ain> 1115 <user\@dom.ain> 1116 0: user (a] dom.ain 1117 user\@dom.ain 1118 0: user (a] dom.ain 1119 \"A. Other\" <user.1234\@dom.ain> (a comment) 1120 0: "A. Other" <user.1234 (a] dom.ain> (a comment) 1121 A. Other <user.1234\@dom.ain> (a comment) 1122 0: Other <user.1234 (a] dom.ain> (a comment) 1123 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 1124 0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay 1125 A missing angle <user\@some.where 1126 0: user (a] some.where 1127 \= Expect no match 1128 The quick brown fox 1129 No match 1130 1131 /[\040\t]* # Nab whitespace. 1132 (?: 1133 \( # ( 1134 [^\\\x80-\xff\n\015()] * # normal* 1135 (?: # ( 1136 (?: \\ [^\x80-\xff] | 1137 \( # ( 1138 [^\\\x80-\xff\n\015()] * # normal* 1139 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1140 \) # ) 1141 ) # special 1142 [^\\\x80-\xff\n\015()] * # normal* 1143 )* # )* 1144 \) # ) 1145 [\040\t]* )* # If comment found, allow more spaces. 1146 # optional leading comment 1147 (?: 1148 (?: 1149 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1150 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1151 # Atom 1152 | # or 1153 " # " 1154 [^\\\x80-\xff\n\015"] * # normal 1155 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1156 " # " 1157 # Quoted string 1158 ) 1159 [\040\t]* # Nab whitespace. 1160 (?: 1161 \( # ( 1162 [^\\\x80-\xff\n\015()] * # normal* 1163 (?: # ( 1164 (?: \\ [^\x80-\xff] | 1165 \( # ( 1166 [^\\\x80-\xff\n\015()] * # normal* 1167 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1168 \) # ) 1169 ) # special 1170 [^\\\x80-\xff\n\015()] * # normal* 1171 )* # )* 1172 \) # ) 1173 [\040\t]* )* # If comment found, allow more spaces. 1174 (?: 1175 \. 1176 [\040\t]* # Nab whitespace. 1177 (?: 1178 \( # ( 1179 [^\\\x80-\xff\n\015()] * # normal* 1180 (?: # ( 1181 (?: \\ [^\x80-\xff] | 1182 \( # ( 1183 [^\\\x80-\xff\n\015()] * # normal* 1184 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1185 \) # ) 1186 ) # special 1187 [^\\\x80-\xff\n\015()] * # normal* 1188 )* # )* 1189 \) # ) 1190 [\040\t]* )* # If comment found, allow more spaces. 1191 (?: 1192 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1193 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1194 # Atom 1195 | # or 1196 " # " 1197 [^\\\x80-\xff\n\015"] * # normal 1198 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1199 " # " 1200 # Quoted string 1201 ) 1202 [\040\t]* # Nab whitespace. 1203 (?: 1204 \( # ( 1205 [^\\\x80-\xff\n\015()] * # normal* 1206 (?: # ( 1207 (?: \\ [^\x80-\xff] | 1208 \( # ( 1209 [^\\\x80-\xff\n\015()] * # normal* 1210 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1211 \) # ) 1212 ) # special 1213 [^\\\x80-\xff\n\015()] * # normal* 1214 )* # )* 1215 \) # ) 1216 [\040\t]* )* # If comment found, allow more spaces. 1217 # additional words 1218 )* 1219 @ 1220 [\040\t]* # Nab whitespace. 1221 (?: 1222 \( # ( 1223 [^\\\x80-\xff\n\015()] * # normal* 1224 (?: # ( 1225 (?: \\ [^\x80-\xff] | 1226 \( # ( 1227 [^\\\x80-\xff\n\015()] * # normal* 1228 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1229 \) # ) 1230 ) # special 1231 [^\\\x80-\xff\n\015()] * # normal* 1232 )* # )* 1233 \) # ) 1234 [\040\t]* )* # If comment found, allow more spaces. 1235 (?: 1236 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1237 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1238 | 1239 \[ # [ 1240 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1241 \] # ] 1242 ) 1243 [\040\t]* # Nab whitespace. 1244 (?: 1245 \( # ( 1246 [^\\\x80-\xff\n\015()] * # normal* 1247 (?: # ( 1248 (?: \\ [^\x80-\xff] | 1249 \( # ( 1250 [^\\\x80-\xff\n\015()] * # normal* 1251 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1252 \) # ) 1253 ) # special 1254 [^\\\x80-\xff\n\015()] * # normal* 1255 )* # )* 1256 \) # ) 1257 [\040\t]* )* # If comment found, allow more spaces. 1258 # optional trailing comments 1259 (?: 1260 \. 1261 [\040\t]* # Nab whitespace. 1262 (?: 1263 \( # ( 1264 [^\\\x80-\xff\n\015()] * # normal* 1265 (?: # ( 1266 (?: \\ [^\x80-\xff] | 1267 \( # ( 1268 [^\\\x80-\xff\n\015()] * # normal* 1269 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1270 \) # ) 1271 ) # special 1272 [^\\\x80-\xff\n\015()] * # normal* 1273 )* # )* 1274 \) # ) 1275 [\040\t]* )* # If comment found, allow more spaces. 1276 (?: 1277 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1278 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1279 | 1280 \[ # [ 1281 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1282 \] # ] 1283 ) 1284 [\040\t]* # Nab whitespace. 1285 (?: 1286 \( # ( 1287 [^\\\x80-\xff\n\015()] * # normal* 1288 (?: # ( 1289 (?: \\ [^\x80-\xff] | 1290 \( # ( 1291 [^\\\x80-\xff\n\015()] * # normal* 1292 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1293 \) # ) 1294 ) # special 1295 [^\\\x80-\xff\n\015()] * # normal* 1296 )* # )* 1297 \) # ) 1298 [\040\t]* )* # If comment found, allow more spaces. 1299 # optional trailing comments 1300 )* 1301 # address 1302 | # or 1303 (?: 1304 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1305 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1306 # Atom 1307 | # or 1308 " # " 1309 [^\\\x80-\xff\n\015"] * # normal 1310 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1311 " # " 1312 # Quoted string 1313 ) 1314 # leading word 1315 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # "normal" atoms and or spaces 1316 (?: 1317 (?: 1318 \( # ( 1319 [^\\\x80-\xff\n\015()] * # normal* 1320 (?: # ( 1321 (?: \\ [^\x80-\xff] | 1322 \( # ( 1323 [^\\\x80-\xff\n\015()] * # normal* 1324 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1325 \) # ) 1326 ) # special 1327 [^\\\x80-\xff\n\015()] * # normal* 1328 )* # )* 1329 \) # ) 1330 | 1331 " # " 1332 [^\\\x80-\xff\n\015"] * # normal 1333 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1334 " # " 1335 ) # "special" comment or quoted string 1336 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # more "normal" 1337 )* 1338 < 1339 [\040\t]* # Nab whitespace. 1340 (?: 1341 \( # ( 1342 [^\\\x80-\xff\n\015()] * # normal* 1343 (?: # ( 1344 (?: \\ [^\x80-\xff] | 1345 \( # ( 1346 [^\\\x80-\xff\n\015()] * # normal* 1347 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1348 \) # ) 1349 ) # special 1350 [^\\\x80-\xff\n\015()] * # normal* 1351 )* # )* 1352 \) # ) 1353 [\040\t]* )* # If comment found, allow more spaces. 1354 # < 1355 (?: 1356 @ 1357 [\040\t]* # Nab whitespace. 1358 (?: 1359 \( # ( 1360 [^\\\x80-\xff\n\015()] * # normal* 1361 (?: # ( 1362 (?: \\ [^\x80-\xff] | 1363 \( # ( 1364 [^\\\x80-\xff\n\015()] * # normal* 1365 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1366 \) # ) 1367 ) # special 1368 [^\\\x80-\xff\n\015()] * # normal* 1369 )* # )* 1370 \) # ) 1371 [\040\t]* )* # If comment found, allow more spaces. 1372 (?: 1373 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1374 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1375 | 1376 \[ # [ 1377 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1378 \] # ] 1379 ) 1380 [\040\t]* # Nab whitespace. 1381 (?: 1382 \( # ( 1383 [^\\\x80-\xff\n\015()] * # normal* 1384 (?: # ( 1385 (?: \\ [^\x80-\xff] | 1386 \( # ( 1387 [^\\\x80-\xff\n\015()] * # normal* 1388 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1389 \) # ) 1390 ) # special 1391 [^\\\x80-\xff\n\015()] * # normal* 1392 )* # )* 1393 \) # ) 1394 [\040\t]* )* # If comment found, allow more spaces. 1395 # optional trailing comments 1396 (?: 1397 \. 1398 [\040\t]* # Nab whitespace. 1399 (?: 1400 \( # ( 1401 [^\\\x80-\xff\n\015()] * # normal* 1402 (?: # ( 1403 (?: \\ [^\x80-\xff] | 1404 \( # ( 1405 [^\\\x80-\xff\n\015()] * # normal* 1406 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1407 \) # ) 1408 ) # special 1409 [^\\\x80-\xff\n\015()] * # normal* 1410 )* # )* 1411 \) # ) 1412 [\040\t]* )* # If comment found, allow more spaces. 1413 (?: 1414 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1415 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1416 | 1417 \[ # [ 1418 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1419 \] # ] 1420 ) 1421 [\040\t]* # Nab whitespace. 1422 (?: 1423 \( # ( 1424 [^\\\x80-\xff\n\015()] * # normal* 1425 (?: # ( 1426 (?: \\ [^\x80-\xff] | 1427 \( # ( 1428 [^\\\x80-\xff\n\015()] * # normal* 1429 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1430 \) # ) 1431 ) # special 1432 [^\\\x80-\xff\n\015()] * # normal* 1433 )* # )* 1434 \) # ) 1435 [\040\t]* )* # If comment found, allow more spaces. 1436 # optional trailing comments 1437 )* 1438 (?: , 1439 [\040\t]* # Nab whitespace. 1440 (?: 1441 \( # ( 1442 [^\\\x80-\xff\n\015()] * # normal* 1443 (?: # ( 1444 (?: \\ [^\x80-\xff] | 1445 \( # ( 1446 [^\\\x80-\xff\n\015()] * # normal* 1447 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1448 \) # ) 1449 ) # special 1450 [^\\\x80-\xff\n\015()] * # normal* 1451 )* # )* 1452 \) # ) 1453 [\040\t]* )* # If comment found, allow more spaces. 1454 @ 1455 [\040\t]* # Nab whitespace. 1456 (?: 1457 \( # ( 1458 [^\\\x80-\xff\n\015()] * # normal* 1459 (?: # ( 1460 (?: \\ [^\x80-\xff] | 1461 \( # ( 1462 [^\\\x80-\xff\n\015()] * # normal* 1463 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1464 \) # ) 1465 ) # special 1466 [^\\\x80-\xff\n\015()] * # normal* 1467 )* # )* 1468 \) # ) 1469 [\040\t]* )* # If comment found, allow more spaces. 1470 (?: 1471 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1472 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1473 | 1474 \[ # [ 1475 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1476 \] # ] 1477 ) 1478 [\040\t]* # Nab whitespace. 1479 (?: 1480 \( # ( 1481 [^\\\x80-\xff\n\015()] * # normal* 1482 (?: # ( 1483 (?: \\ [^\x80-\xff] | 1484 \( # ( 1485 [^\\\x80-\xff\n\015()] * # normal* 1486 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1487 \) # ) 1488 ) # special 1489 [^\\\x80-\xff\n\015()] * # normal* 1490 )* # )* 1491 \) # ) 1492 [\040\t]* )* # If comment found, allow more spaces. 1493 # optional trailing comments 1494 (?: 1495 \. 1496 [\040\t]* # Nab whitespace. 1497 (?: 1498 \( # ( 1499 [^\\\x80-\xff\n\015()] * # normal* 1500 (?: # ( 1501 (?: \\ [^\x80-\xff] | 1502 \( # ( 1503 [^\\\x80-\xff\n\015()] * # normal* 1504 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1505 \) # ) 1506 ) # special 1507 [^\\\x80-\xff\n\015()] * # normal* 1508 )* # )* 1509 \) # ) 1510 [\040\t]* )* # If comment found, allow more spaces. 1511 (?: 1512 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1513 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1514 | 1515 \[ # [ 1516 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1517 \] # ] 1518 ) 1519 [\040\t]* # Nab whitespace. 1520 (?: 1521 \( # ( 1522 [^\\\x80-\xff\n\015()] * # normal* 1523 (?: # ( 1524 (?: \\ [^\x80-\xff] | 1525 \( # ( 1526 [^\\\x80-\xff\n\015()] * # normal* 1527 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1528 \) # ) 1529 ) # special 1530 [^\\\x80-\xff\n\015()] * # normal* 1531 )* # )* 1532 \) # ) 1533 [\040\t]* )* # If comment found, allow more spaces. 1534 # optional trailing comments 1535 )* 1536 )* # additional domains 1537 : 1538 [\040\t]* # Nab whitespace. 1539 (?: 1540 \( # ( 1541 [^\\\x80-\xff\n\015()] * # normal* 1542 (?: # ( 1543 (?: \\ [^\x80-\xff] | 1544 \( # ( 1545 [^\\\x80-\xff\n\015()] * # normal* 1546 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1547 \) # ) 1548 ) # special 1549 [^\\\x80-\xff\n\015()] * # normal* 1550 )* # )* 1551 \) # ) 1552 [\040\t]* )* # If comment found, allow more spaces. 1553 # optional trailing comments 1554 )? # optional route 1555 (?: 1556 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1557 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1558 # Atom 1559 | # or 1560 " # " 1561 [^\\\x80-\xff\n\015"] * # normal 1562 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1563 " # " 1564 # Quoted string 1565 ) 1566 [\040\t]* # Nab whitespace. 1567 (?: 1568 \( # ( 1569 [^\\\x80-\xff\n\015()] * # normal* 1570 (?: # ( 1571 (?: \\ [^\x80-\xff] | 1572 \( # ( 1573 [^\\\x80-\xff\n\015()] * # normal* 1574 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1575 \) # ) 1576 ) # special 1577 [^\\\x80-\xff\n\015()] * # normal* 1578 )* # )* 1579 \) # ) 1580 [\040\t]* )* # If comment found, allow more spaces. 1581 (?: 1582 \. 1583 [\040\t]* # Nab whitespace. 1584 (?: 1585 \( # ( 1586 [^\\\x80-\xff\n\015()] * # normal* 1587 (?: # ( 1588 (?: \\ [^\x80-\xff] | 1589 \( # ( 1590 [^\\\x80-\xff\n\015()] * # normal* 1591 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1592 \) # ) 1593 ) # special 1594 [^\\\x80-\xff\n\015()] * # normal* 1595 )* # )* 1596 \) # ) 1597 [\040\t]* )* # If comment found, allow more spaces. 1598 (?: 1599 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1600 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1601 # Atom 1602 | # or 1603 " # " 1604 [^\\\x80-\xff\n\015"] * # normal 1605 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1606 " # " 1607 # Quoted string 1608 ) 1609 [\040\t]* # Nab whitespace. 1610 (?: 1611 \( # ( 1612 [^\\\x80-\xff\n\015()] * # normal* 1613 (?: # ( 1614 (?: \\ [^\x80-\xff] | 1615 \( # ( 1616 [^\\\x80-\xff\n\015()] * # normal* 1617 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1618 \) # ) 1619 ) # special 1620 [^\\\x80-\xff\n\015()] * # normal* 1621 )* # )* 1622 \) # ) 1623 [\040\t]* )* # If comment found, allow more spaces. 1624 # additional words 1625 )* 1626 @ 1627 [\040\t]* # Nab whitespace. 1628 (?: 1629 \( # ( 1630 [^\\\x80-\xff\n\015()] * # normal* 1631 (?: # ( 1632 (?: \\ [^\x80-\xff] | 1633 \( # ( 1634 [^\\\x80-\xff\n\015()] * # normal* 1635 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1636 \) # ) 1637 ) # special 1638 [^\\\x80-\xff\n\015()] * # normal* 1639 )* # )* 1640 \) # ) 1641 [\040\t]* )* # If comment found, allow more spaces. 1642 (?: 1643 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1644 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1645 | 1646 \[ # [ 1647 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1648 \] # ] 1649 ) 1650 [\040\t]* # Nab whitespace. 1651 (?: 1652 \( # ( 1653 [^\\\x80-\xff\n\015()] * # normal* 1654 (?: # ( 1655 (?: \\ [^\x80-\xff] | 1656 \( # ( 1657 [^\\\x80-\xff\n\015()] * # normal* 1658 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1659 \) # ) 1660 ) # special 1661 [^\\\x80-\xff\n\015()] * # normal* 1662 )* # )* 1663 \) # ) 1664 [\040\t]* )* # If comment found, allow more spaces. 1665 # optional trailing comments 1666 (?: 1667 \. 1668 [\040\t]* # Nab whitespace. 1669 (?: 1670 \( # ( 1671 [^\\\x80-\xff\n\015()] * # normal* 1672 (?: # ( 1673 (?: \\ [^\x80-\xff] | 1674 \( # ( 1675 [^\\\x80-\xff\n\015()] * # normal* 1676 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1677 \) # ) 1678 ) # special 1679 [^\\\x80-\xff\n\015()] * # normal* 1680 )* # )* 1681 \) # ) 1682 [\040\t]* )* # If comment found, allow more spaces. 1683 (?: 1684 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1685 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1686 | 1687 \[ # [ 1688 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1689 \] # ] 1690 ) 1691 [\040\t]* # Nab whitespace. 1692 (?: 1693 \( # ( 1694 [^\\\x80-\xff\n\015()] * # normal* 1695 (?: # ( 1696 (?: \\ [^\x80-\xff] | 1697 \( # ( 1698 [^\\\x80-\xff\n\015()] * # normal* 1699 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1700 \) # ) 1701 ) # special 1702 [^\\\x80-\xff\n\015()] * # normal* 1703 )* # )* 1704 \) # ) 1705 [\040\t]* )* # If comment found, allow more spaces. 1706 # optional trailing comments 1707 )* 1708 # address spec 1709 > # > 1710 # name and address 1711 ) 1712 /x 1713 Alan Other <user\@dom.ain> 1714 0: Alan Other <user (a] dom.ain> 1715 <user\@dom.ain> 1716 0: user (a] dom.ain 1717 user\@dom.ain 1718 0: user (a] dom.ain 1719 \"A. Other\" <user.1234\@dom.ain> (a comment) 1720 0: "A. Other" <user.1234 (a] dom.ain> 1721 A. Other <user.1234\@dom.ain> (a comment) 1722 0: Other <user.1234 (a] dom.ain> 1723 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 1724 0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay 1725 A missing angle <user\@some.where 1726 0: user (a] some.where 1727 \= Expect no match 1728 The quick brown fox 1729 No match 1730 1731 /abc\0def\00pqr\000xyz\0000AB/ 1732 abc\0def\00pqr\000xyz\0000AB 1733 0: abc\x00def\x00pqr\x00xyz\x000AB 1734 abc456 abc\0def\00pqr\000xyz\0000ABCDE 1735 0: abc\x00def\x00pqr\x00xyz\x000AB 1736 1737 /abc\x0def\x00pqr\x000xyz\x0000AB/ 1738 abc\x0def\x00pqr\x000xyz\x0000AB 1739 0: abc\x0def\x00pqr\x000xyz\x0000AB 1740 abc456 abc\x0def\x00pqr\x000xyz\x0000ABCDE 1741 0: abc\x0def\x00pqr\x000xyz\x0000AB 1742 1743 /^[\000-\037]/ 1744 \0A 1745 0: \x00 1746 \01B 1747 0: \x01 1748 \037C 1749 0: \x1f 1750 1751 /\0*/ 1752 \0\0\0\0 1753 0: \x00\x00\x00\x00 1754 1755 /A\x0{2,3}Z/ 1756 The A\x0\x0Z 1757 0: A\x00\x00Z 1758 An A\0\x0\0Z 1759 0: A\x00\x00\x00Z 1760 \= Expect no match 1761 A\0Z 1762 No match 1763 A\0\x0\0\x0Z 1764 No match 1765 1766 /^(cow|)\1(bell)/ 1767 cowcowbell 1768 0: cowcowbell 1769 1: cow 1770 2: bell 1771 bell 1772 0: bell 1773 1: 1774 2: bell 1775 \= Expect no match 1776 cowbell 1777 No match 1778 1779 /^\s/ 1780 \040abc 1781 0: 1782 \x0cabc 1783 0: \x0c 1784 \nabc 1785 0: \x0a 1786 \rabc 1787 0: \x0d 1788 \tabc 1789 0: \x09 1790 \= Expect no match 1791 abc 1792 No match 1793 1794 /^a b 1795 c/x 1797 abc 1798 0: abc 1799 1800 /^(a|)\1*b/ 1801 ab 1802 0: ab 1803 1: a 1804 aaaab 1805 0: aaaab 1806 1: a 1807 b 1808 0: b 1809 1: 1810 \= Expect no match 1811 acb 1812 No match 1813 1814 /^(a|)\1+b/ 1815 aab 1816 0: aab 1817 1: a 1818 aaaab 1819 0: aaaab 1820 1: a 1821 b 1822 0: b 1823 1: 1824 \= Expect no match 1825 ab 1826 No match 1827 1828 /^(a|)\1?b/ 1829 ab 1830 0: ab 1831 1: a 1832 aab 1833 0: aab 1834 1: a 1835 b 1836 0: b 1837 1: 1838 \= Expect no match 1839 acb 1840 No match 1841 1842 /^(a|)\1{2}b/ 1843 aaab 1844 0: aaab 1845 1: a 1846 b 1847 0: b 1848 1: 1849 \= Expect no match 1850 ab 1851 No match 1852 aab 1853 No match 1854 aaaab 1855 No match 1856 1857 /^(a|)\1{2,3}b/ 1858 aaab 1859 0: aaab 1860 1: a 1861 aaaab 1862 0: aaaab 1863 1: a 1864 b 1865 0: b 1866 1: 1867 \= Expect no match 1868 ab 1869 No match 1870 aab 1871 No match 1872 aaaaab 1873 No match 1874 1875 /ab{1,3}bc/ 1876 abbbbc 1877 0: abbbbc 1878 abbbc 1879 0: abbbc 1880 abbc 1881 0: abbc 1882 \= Expect no match 1883 abc 1884 No match 1885 abbbbbc 1886 No match 1887 1888 /([^.]*)\.([^:]*):[T ]+(.*)/ 1889 track1.title:TBlah blah blah 1890 0: track1.title:TBlah blah blah 1891 1: track1 1892 2: title 1893 3: Blah blah blah 1894 1895 /([^.]*)\.([^:]*):[T ]+(.*)/i 1896 track1.title:TBlah blah blah 1897 0: track1.title:TBlah blah blah 1898 1: track1 1899 2: title 1900 3: Blah blah blah 1901 1902 /([^.]*)\.([^:]*):[t ]+(.*)/i 1903 track1.title:TBlah blah blah 1904 0: track1.title:TBlah blah blah 1905 1: track1 1906 2: title 1907 3: Blah blah blah 1908 1909 /^[W-c]+$/ 1910 WXY_^abc 1911 0: WXY_^abc 1912 \= Expect no match 1913 wxy 1914 No match 1915 1916 /^[W-c]+$/i 1917 WXY_^abc 1918 0: WXY_^abc 1919 wxy_^ABC 1920 0: wxy_^ABC 1921 1922 /^[\x3f-\x5F]+$/i 1923 WXY_^abc 1924 0: WXY_^abc 1925 wxy_^ABC 1926 0: wxy_^ABC 1927 1928 /^abc$/m 1929 abc 1930 0: abc 1931 qqq\nabc 1932 0: abc 1933 abc\nzzz 1934 0: abc 1935 qqq\nabc\nzzz 1936 0: abc 1937 1938 /^abc$/ 1939 abc 1940 0: abc 1941 \= Expect no match 1942 qqq\nabc 1943 No match 1944 abc\nzzz 1945 No match 1946 qqq\nabc\nzzz 1947 No match 1948 1949 /\Aabc\Z/m 1950 abc 1951 0: abc 1952 abc\n 1953 0: abc 1954 \= Expect no match 1955 qqq\nabc 1956 No match 1957 abc\nzzz 1958 No match 1959 qqq\nabc\nzzz 1960 No match 1961 1962 /\A(.)*\Z/s 1963 abc\ndef 1964 0: abc\x0adef 1965 1: f 1966 1967 /\A(.)*\Z/m 1968 \= Expect no match 1969 abc\ndef 1970 No match 1971 1972 /(?:b)|(?::+)/ 1973 b::c 1974 0: b 1975 c::b 1976 0: :: 1977 1978 /[-az]+/ 1979 az- 1980 0: az- 1981 \= Expect no match 1982 b 1983 No match 1984 1985 /[az-]+/ 1986 za- 1987 0: za- 1988 \= Expect no match 1989 b 1990 No match 1991 1992 /[a\-z]+/ 1993 a-z 1994 0: a-z 1995 \= Expect no match 1996 b 1997 No match 1998 1999 /[a-z]+/ 2000 abcdxyz 2001 0: abcdxyz 2002 2003 /[\d-]+/ 2004 12-34 2005 0: 12-34 2006 \= Expect no match 2007 aaa 2008 No match 2009 2010 /[\d-z]+/ 2011 12-34z 2012 0: 12-34z 2013 \= Expect no match 2014 aaa 2015 No match 2016 2017 /\x5c/ 2018 \\ 2019 0: \ 2020 2021 /\x20Z/ 2022 the Zoo 2023 0: Z 2024 \= Expect no match 2025 Zulu 2026 No match 2027 2028 /(abc)\1/i 2029 abcabc 2030 0: abcabc 2031 1: abc 2032 ABCabc 2033 0: ABCabc 2034 1: ABC 2035 abcABC 2036 0: abcABC 2037 1: abc 2038 2039 /abc$/ 2040 abc 2041 0: abc 2042 abc\n 2043 0: abc 2044 \= Expect no match 2045 abc\ndef 2046 No match 2047 2048 /(abc)\123/ 2049 abc\x53 2050 0: abcS 2051 1: abc 2052 2053 /(abc)\223/ 2054 abc\x93 2055 0: abc\x93 2056 1: abc 2057 2058 /(abc)\323/ 2059 abc\xd3 2060 0: abc\xd3 2061 1: abc 2062 2063 /(abc)\100/ 2064 abc\x40 2065 0: abc@ 2066 1: abc 2067 abc\100 2068 0: abc@ 2069 1: abc 2070 2071 /(abc)\1000/ 2072 abc\x400 2073 0: abc@0 2074 1: abc 2075 abc\x40\x30 2076 0: abc@0 2077 1: abc 2078 abc\1000 2079 0: abc@0 2080 1: abc 2081 abc\100\x30 2082 0: abc@0 2083 1: abc 2084 abc\100\060 2085 0: abc@0 2086 1: abc 2087 abc\100\60 2088 0: abc@0 2089 1: abc 2090 2091 /^(A)(B)(C)(D)(E)(F)(G)(H)(I)\8\9$/ 2092 ABCDEFGHIHI 2093 0: ABCDEFGHIHI 2094 1: A 2095 2: B 2096 3: C 2097 4: D 2098 5: E 2099 6: F 2100 7: G 2101 8: H 2102 9: I 2103 2104 /^[A\8B\9C]+$/ 2105 A8B9C 2106 0: A8B9C 2107 \= Expect no match 2108 A8B9C\x00 2109 No match 2110 2111 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\12\123/ 2112 abcdefghijkllS 2113 0: abcdefghijkllS 2114 1: a 2115 2: b 2116 3: c 2117 4: d 2118 5: e 2119 6: f 2120 7: g 2121 8: h 2122 9: i 2123 10: j 2124 11: k 2125 12: l 2126 2127 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12\123/ 2128 abcdefghijk\12S 2129 0: abcdefghijk\x0aS 2130 1: a 2131 2: b 2132 3: c 2133 4: d 2134 5: e 2135 6: f 2136 7: g 2137 8: h 2138 9: i 2139 10: j 2140 11: k 2141 2142 /a{0}bc/ 2143 bc 2144 0: bc 2145 2146 /(a|(bc)){0,0}?xyz/ 2147 xyz 2148 0: xyz 2149 2150 /abc[\10]de/ 2151 abc\010de 2152 0: abc\x08de 2153 2154 /abc[\1]de/ 2155 abc\1de 2156 0: abc\x01de 2157 2158 /(abc)[\1]de/ 2159 abc\1de 2160 0: abc\x01de 2161 1: abc 2162 2163 /(?s)a.b/ 2164 a\nb 2165 0: a\x0ab 2166 2167 /^([^a])([^\b])([^c]*)([^d]{3,4})/ 2168 baNOTccccd 2169 0: baNOTcccc 2170 1: b 2171 2: a 2172 3: NOT 2173 4: cccc 2174 baNOTcccd 2175 0: baNOTccc 2176 1: b 2177 2: a 2178 3: NOT 2179 4: ccc 2180 baNOTccd 2181 0: baNOTcc 2182 1: b 2183 2: a 2184 3: NO 2185 4: Tcc 2186 bacccd 2187 0: baccc 2188 1: b 2189 2: a 2190 3: 2191 4: ccc 2192 \= Expect no match 2193 anything 2194 No match 2195 b\bc 2196 No match 2197 baccd 2198 No match 2199 2200 /[^a]/ 2201 Abc 2202 0: A 2203 2204 /[^a]/i 2205 Abc 2206 0: b 2207 2208 /[^a]+/ 2209 AAAaAbc 2210 0: AAA 2211 2212 /[^a]+/i 2213 AAAaAbc 2214 0: bc 2215 2216 /[^a]+/ 2217 bbb\nccc 2218 0: bbb\x0accc 2219 2220 /[^k]$/ 2221 abc 2222 0: c 2223 \= Expect no match 2224 abk 2225 No match 2226 2227 /[^k]{2,3}$/ 2228 abc 2229 0: abc 2230 kbc 2231 0: bc 2232 kabc 2233 0: abc 2234 \= Expect no match 2235 abk 2236 No match 2237 akb 2238 No match 2239 akk 2240 No match 2241 2242 /^\d{8,}\@.+[^k]$/ 2243 12345678\@a.b.c.d 2244 0: 12345678 (a] a.b.c.d 2245 123456789\@x.y.z 2246 0: 123456789 (a] x.y.z 2247 \= Expect no match 2248 12345678\@x.y.uk 2249 No match 2250 1234567\@a.b.c.d 2251 No match 2252 2253 /(a)\1{8,}/ 2254 aaaaaaaaa 2255 0: aaaaaaaaa 2256 1: a 2257 aaaaaaaaaa 2258 0: aaaaaaaaaa 2259 1: a 2260 \= Expect no match 2261 aaaaaaa 2262 No match 2263 2264 /[^a]/ 2265 aaaabcd 2266 0: b 2267 aaAabcd 2268 0: A 2269 2270 /[^a]/i 2271 aaaabcd 2272 0: b 2273 aaAabcd 2274 0: b 2275 2276 /[^az]/ 2277 aaaabcd 2278 0: b 2279 aaAabcd 2280 0: A 2281 2282 /[^az]/i 2283 aaaabcd 2284 0: b 2285 aaAabcd 2286 0: b 2287 2288 /\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/ 2289 \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 2290 0: \x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff 2291 2292 /P[^*]TAIRE[^*]{1,6}?LL/ 2293 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 2294 0: PSTAIREISLL 2295 2296 /P[^*]TAIRE[^*]{1,}?LL/ 2297 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 2298 0: PSTAIREISLL 2299 2300 /(\.\d\d[1-9]?)\d+/ 2301 1.230003938 2302 0: .230003938 2303 1: .23 2304 1.875000282 2305 0: .875000282 2306 1: .875 2307 1.235 2308 0: .235 2309 1: .23 2310 2311 /(\.\d\d((?=0)|\d(?=\d)))/ 2312 1.230003938 2313 0: .23 2314 1: .23 2315 2: 2316 1.875000282 2317 0: .875 2318 1: .875 2319 2: 5 2320 \= Expect no match 2321 1.235 2322 No match 2323 2324 /a(?)b/ 2325 ab 2326 0: ab 2327 2328 /\b(foo)\s+(\w+)/i 2329 Food is on the foo table 2330 0: foo table 2331 1: foo 2332 2: table 2333 2334 /foo(.*)bar/ 2335 The food is under the bar in the barn. 2336 0: food is under the bar in the bar 2337 1: d is under the bar in the 2338 2339 /foo(.*?)bar/ 2340 The food is under the bar in the barn. 2341 0: food is under the bar 2342 1: d is under the 2343 2344 /(.*)(\d*)/ 2345 I have 2 numbers: 53147 2346 0: I have 2 numbers: 53147 2347 1: I have 2 numbers: 53147 2348 2: 2349 2350 /(.*)(\d+)/ 2351 I have 2 numbers: 53147 2352 0: I have 2 numbers: 53147 2353 1: I have 2 numbers: 5314 2354 2: 7 2355 2356 /(.*?)(\d*)/ 2357 I have 2 numbers: 53147 2358 0: 2359 1: 2360 2: 2361 2362 /(.*?)(\d+)/ 2363 I have 2 numbers: 53147 2364 0: I have 2 2365 1: I have 2366 2: 2 2367 2368 /(.*)(\d+)$/ 2369 I have 2 numbers: 53147 2370 0: I have 2 numbers: 53147 2371 1: I have 2 numbers: 5314 2372 2: 7 2373 2374 /(.*?)(\d+)$/ 2375 I have 2 numbers: 53147 2376 0: I have 2 numbers: 53147 2377 1: I have 2 numbers: 2378 2: 53147 2379 2380 /(.*)\b(\d+)$/ 2381 I have 2 numbers: 53147 2382 0: I have 2 numbers: 53147 2383 1: I have 2 numbers: 2384 2: 53147 2385 2386 /(.*\D)(\d+)$/ 2387 I have 2 numbers: 53147 2388 0: I have 2 numbers: 53147 2389 1: I have 2 numbers: 2390 2: 53147 2391 2392 /^\D*(?!123)/ 2393 ABC123 2394 0: AB 2395 2396 /^(\D*)(?=\d)(?!123)/ 2397 ABC445 2398 0: ABC 2399 1: ABC 2400 \= Expect no match 2401 ABC123 2402 No match 2403 2404 /^[W-]46]/ 2405 W46]789 2406 0: W46] 2407 -46]789 2408 0: -46] 2409 \= Expect no match 2410 Wall 2411 No match 2412 Zebra 2413 No match 2414 42 2415 No match 2416 [abcd] 2417 No match 2418 ]abcd[ 2419 No match 2420 2421 /^[W-\]46]/ 2422 W46]789 2423 0: W 2424 Wall 2425 0: W 2426 Zebra 2427 0: Z 2428 Xylophone 2429 0: X 2430 42 2431 0: 4 2432 [abcd] 2433 0: [ 2434 ]abcd[ 2435 0: ] 2436 \\backslash 2437 0: \ 2438 \= Expect no match 2439 -46]789 2440 No match 2441 well 2442 No match 2443 2444 /\d\d\/\d\d\/\d\d\d\d/ 2445 01/01/2000 2446 0: 01/01/2000 2447 2448 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/ 2449 word cat dog elephant mussel cow horse canary baboon snake shark otherword 2450 0: word cat dog elephant mussel cow horse canary baboon snake shark otherword 2451 \= Expect no match 2452 word cat dog elephant mussel cow horse canary baboon snake shark 2453 No match 2454 2455 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/ 2456 \= Expect no match 2457 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 2458 No match 2459 2460 /^(a){0,0}/ 2461 bcd 2462 0: 2463 abc 2464 0: 2465 aab 2466 0: 2467 2468 /^(a){0,1}/ 2469 bcd 2470 0: 2471 abc 2472 0: a 2473 1: a 2474 aab 2475 0: a 2476 1: a 2477 2478 /^(a){0,2}/ 2479 bcd 2480 0: 2481 abc 2482 0: a 2483 1: a 2484 aab 2485 0: aa 2486 1: a 2487 2488 /^(a){0,3}/ 2489 bcd 2490 0: 2491 abc 2492 0: a 2493 1: a 2494 aab 2495 0: aa 2496 1: a 2497 aaa 2498 0: aaa 2499 1: a 2500 2501 /^(a){0,}/ 2502 bcd 2503 0: 2504 abc 2505 0: a 2506 1: a 2507 aab 2508 0: aa 2509 1: a 2510 aaa 2511 0: aaa 2512 1: a 2513 aaaaaaaa 2514 0: aaaaaaaa 2515 1: a 2516 2517 /^(a){1,1}/ 2518 abc 2519 0: a 2520 1: a 2521 aab 2522 0: a 2523 1: a 2524 \= Expect no match 2525 bcd 2526 No match 2527 2528 /^(a){1,2}/ 2529 abc 2530 0: a 2531 1: a 2532 aab 2533 0: aa 2534 1: a 2535 \= Expect no match 2536 bcd 2537 No match 2538 2539 /^(a){1,3}/ 2540 abc 2541 0: a 2542 1: a 2543 aab 2544 0: aa 2545 1: a 2546 aaa 2547 0: aaa 2548 1: a 2549 \= Expect no match 2550 bcd 2551 No match 2552 2553 /^(a){1,}/ 2554 abc 2555 0: a 2556 1: a 2557 aab 2558 0: aa 2559 1: a 2560 aaa 2561 0: aaa 2562 1: a 2563 aaaaaaaa 2564 0: aaaaaaaa 2565 1: a 2566 \= Expect no match 2567 bcd 2568 No match 2569 2570 /.*\.gif/ 2571 borfle\nbib.gif\nno 2572 0: bib.gif 2573 2574 /.{0,}\.gif/ 2575 borfle\nbib.gif\nno 2576 0: bib.gif 2577 2578 /.*\.gif/m 2579 borfle\nbib.gif\nno 2580 0: bib.gif 2581 2582 /.*\.gif/s 2583 borfle\nbib.gif\nno 2584 0: borfle\x0abib.gif 2585 2586 /.*\.gif/ms 2587 borfle\nbib.gif\nno 2588 0: borfle\x0abib.gif 2589 2590 /.*$/ 2591 borfle\nbib.gif\nno 2592 0: no 2593 2594 /.*$/m 2595 borfle\nbib.gif\nno 2596 0: borfle 2597 2598 /.*$/s 2599 borfle\nbib.gif\nno 2600 0: borfle\x0abib.gif\x0ano 2601 2602 /.*$/ms 2603 borfle\nbib.gif\nno 2604 0: borfle\x0abib.gif\x0ano 2605 2606 /.*$/ 2607 borfle\nbib.gif\nno\n 2608 0: no 2609 2610 /.*$/m 2611 borfle\nbib.gif\nno\n 2612 0: borfle 2613 2614 /.*$/s 2615 borfle\nbib.gif\nno\n 2616 0: borfle\x0abib.gif\x0ano\x0a 2617 2618 /.*$/ms 2619 borfle\nbib.gif\nno\n 2620 0: borfle\x0abib.gif\x0ano\x0a 2621 2622 /(.*X|^B)/ 2623 abcde\n1234Xyz 2624 0: 1234X 2625 1: 1234X 2626 BarFoo 2627 0: B 2628 1: B 2629 \= Expect no match 2630 abcde\nBar 2631 No match 2632 2633 /(.*X|^B)/m 2634 abcde\n1234Xyz 2635 0: 1234X 2636 1: 1234X 2637 BarFoo 2638 0: B 2639 1: B 2640 abcde\nBar 2641 0: B 2642 1: B 2643 2644 /(.*X|^B)/s 2645 abcde\n1234Xyz 2646 0: abcde\x0a1234X 2647 1: abcde\x0a1234X 2648 BarFoo 2649 0: B 2650 1: B 2651 \= Expect no match 2652 abcde\nBar 2653 No match 2654 2655 /(.*X|^B)/ms 2656 abcde\n1234Xyz 2657 0: abcde\x0a1234X 2658 1: abcde\x0a1234X 2659 BarFoo 2660 0: B 2661 1: B 2662 abcde\nBar 2663 0: B 2664 1: B 2665 2666 /(?s)(.*X|^B)/ 2667 abcde\n1234Xyz 2668 0: abcde\x0a1234X 2669 1: abcde\x0a1234X 2670 BarFoo 2671 0: B 2672 1: B 2673 \= Expect no match 2674 abcde\nBar 2675 No match 2676 2677 /(?s:.*X|^B)/ 2678 abcde\n1234Xyz 2679 0: abcde\x0a1234X 2680 BarFoo 2681 0: B 2682 \= Expect no match 2683 abcde\nBar 2684 No match 2685 2686 /^.*B/ 2687 \= Expect no match 2688 abc\nB 2689 No match 2690 2691 /(?s)^.*B/ 2692 abc\nB 2693 0: abc\x0aB 2694 2695 /(?m)^.*B/ 2696 abc\nB 2697 0: B 2698 2699 /(?ms)^.*B/ 2700 abc\nB 2701 0: abc\x0aB 2702 2703 /(?ms)^B/ 2704 abc\nB 2705 0: B 2706 2707 /(?s)B$/ 2708 B\n 2709 0: B 2710 2711 /^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/ 2712 123456654321 2713 0: 123456654321 2714 2715 /^\d\d\d\d\d\d\d\d\d\d\d\d/ 2716 123456654321 2717 0: 123456654321 2718 2719 /^[\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d]/ 2720 123456654321 2721 0: 123456654321 2722 2723 /^[abc]{12}/ 2724 abcabcabcabc 2725 0: abcabcabcabc 2726 2727 /^[a-c]{12}/ 2728 abcabcabcabc 2729 0: abcabcabcabc 2730 2731 /^(a|b|c){12}/ 2732 abcabcabcabc 2733 0: abcabcabcabc 2734 1: c 2735 2736 /^[abcdefghijklmnopqrstuvwxy0123456789]/ 2737 n 2738 0: n 2739 \= Expect no match 2740 z 2741 No match 2742 2743 /abcde{0,0}/ 2744 abcd 2745 0: abcd 2746 \= Expect no match 2747 abce 2748 No match 2749 2750 /ab[cd]{0,0}e/ 2751 abe 2752 0: abe 2753 \= Expect no match 2754 abcde 2755 No match 2756 2757 /ab(c){0,0}d/ 2758 abd 2759 0: abd 2760 \= Expect no match 2761 abcd 2762 No match 2763 2764 /a(b*)/ 2765 a 2766 0: a 2767 1: 2768 ab 2769 0: ab 2770 1: b 2771 abbbb 2772 0: abbbb 2773 1: bbbb 2774 \= Expect no match 2775 bbbbb 2776 No match 2777 2778 /ab\d{0}e/ 2779 abe 2780 0: abe 2781 \= Expect no match 2782 ab1e 2783 No match 2784 2785 /"([^\\"]+|\\.)*"/ 2786 the \"quick\" brown fox 2787 0: "quick" 2788 1: quick 2789 \"the \\\"quick\\\" brown fox\" 2790 0: "the \"quick\" brown fox" 2791 1: brown fox 2792 2793 /.*?/g,aftertext 2794 abc 2795 0: 2796 0+ abc 2797 0: a 2798 0+ bc 2799 0: 2800 0+ bc 2801 0: b 2802 0+ c 2803 0: 2804 0+ c 2805 0: c 2806 0+ 2807 0: 2808 0+ 2809 2810 /\b/g,aftertext 2811 abc 2812 0: 2813 0+ abc 2814 0: 2815 0+ 2816 2817 /\b/g,aftertext 2818 abc 2819 0: 2820 0+ abc 2821 0: 2822 0+ 2823 2824 //g 2825 abc 2826 0: 2827 0: 2828 0: 2829 0: 2830 2831 /<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 2832 <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> 2833 0: <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> 2834 1: BGCOLOR='#DBE9E9' 2835 2: align=left valign=top 2836 3: 43. 2837 4: <a href='joblist.cfm?JobID=94 6735&Keyword='>Word Processor<BR>(N-1286) 2838 5: 2839 6: 2840 7: <unset> 2841 8: align=left valign=top 2842 9: Lega lstaff.com 2843 10: align=left valign=top 2844 11: CA - Statewide 2845 2846 /a[^a]b/ 2847 acb 2848 0: acb 2849 a\nb 2850 0: a\x0ab 2851 2852 /a.b/ 2853 acb 2854 0: acb 2855 \= Expect no match 2856 a\nb 2857 No match 2858 2859 /a[^a]b/s 2860 acb 2861 0: acb 2862 a\nb 2863 0: a\x0ab 2864 2865 /a.b/s 2866 acb 2867 0: acb 2868 a\nb 2869 0: a\x0ab 2870 2871 /^(b+?|a){1,2}?c/ 2872 bac 2873 0: bac 2874 1: a 2875 bbac 2876 0: bbac 2877 1: a 2878 bbbac 2879 0: bbbac 2880 1: a 2881 bbbbac 2882 0: bbbbac 2883 1: a 2884 bbbbbac 2885 0: bbbbbac 2886 1: a 2887 2888 /^(b+|a){1,2}?c/ 2889 bac 2890 0: bac 2891 1: a 2892 bbac 2893 0: bbac 2894 1: a 2895 bbbac 2896 0: bbbac 2897 1: a 2898 bbbbac 2899 0: bbbbac 2900 1: a 2901 bbbbbac 2902 0: bbbbbac 2903 1: a 2904 2905 /(?!\A)x/m 2906 a\bx\n 2907 0: x 2908 a\nx\n 2909 0: x 2910 \= Expect no match 2911 x\nb\n 2912 No match 2913 2914 /(A|B)*?CD/ 2915 CD 2916 0: CD 2917 2918 /(A|B)*CD/ 2919 CD 2920 0: CD 2921 2922 /(AB)*?\1/ 2923 ABABAB 2924 0: ABAB 2925 1: AB 2926 2927 /(AB)*\1/ 2928 ABABAB 2929 0: ABABAB 2930 1: AB 2931 2932 /(?<!bar)foo/ 2933 foo 2934 0: foo 2935 catfood 2936 0: foo 2937 arfootle 2938 0: foo 2939 rfoosh 2940 0: foo 2941 \= Expect no match 2942 barfoo 2943 No match 2944 towbarfoo 2945 No match 2946 2947 /\w{3}(?<!bar)foo/ 2948 catfood 2949 0: catfoo 2950 \= Expect no match 2951 foo 2952 No match 2953 barfoo 2954 No match 2955 towbarfoo 2956 No match 2957 2958 /(?<=(foo)a)bar/ 2959 fooabar 2960 0: bar 2961 1: foo 2962 \= Expect no match 2963 bar 2964 No match 2965 foobbar 2966 No match 2967 2968 /\Aabc\z/m 2969 abc 2970 0: abc 2971 \= Expect no match 2972 abc\n 2973 No match 2974 qqq\nabc 2975 No match 2976 abc\nzzz 2977 No match 2978 qqq\nabc\nzzz 2979 No match 2980 2981 "(?>.*/)foo" 2982 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo 2983 0: /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo 2984 \= Expect no match 2985 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/ 2986 No match 2987 2988 /(?>(\.\d\d[1-9]?))\d+/ 2989 1.230003938 2990 0: .230003938 2991 1: .23 2992 1.875000282 2993 0: .875000282 2994 1: .875 2995 \= Expect no match 2996 1.235 2997 No match 2998 2999 /^((?>\w+)|(?>\s+))*$/ 3000 now is the time for all good men to come to the aid of the party 3001 0: now is the time for all good men to come to the aid of the party 3002 1: party 3003 \= Expect no match 3004 this is not a line with only words and spaces! 3005 No match 3006 3007 /(\d+)(\w)/ 3008 12345a 3009 0: 12345a 3010 1: 12345 3011 2: a 3012 12345+ 3013 0: 12345 3014 1: 1234 3015 2: 5 3016 3017 /((?>\d+))(\w)/ 3018 12345a 3019 0: 12345a 3020 1: 12345 3021 2: a 3022 \= Expect no match 3023 12345+ 3024 No match 3025 3026 /(?>a+)b/ 3027 aaab 3028 0: aaab 3029 3030 /((?>a+)b)/ 3031 aaab 3032 0: aaab 3033 1: aaab 3034 3035 /(?>(a+))b/ 3036 aaab 3037 0: aaab 3038 1: aaa 3039 3040 /(?>b)+/ 3041 aaabbbccc 3042 0: bbb 3043 3044 /(?>a+|b+|c+)*c/ 3045 aaabbbbccccd 3046 0: aaabbbbc 3047 3048 /((?>[^()]+)|\([^()]*\))+/ 3049 ((abc(ade)ufh()()x 3050 0: abc(ade)ufh()()x 3051 1: x 3052 3053 /\(((?>[^()]+)|\([^()]+\))+\)/ 3054 (abc) 3055 0: (abc) 3056 1: abc 3057 (abc(def)xyz) 3058 0: (abc(def)xyz) 3059 1: xyz 3060 \= Expect no match 3061 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3062 No match 3063 3064 /a(?-i)b/i 3065 ab 3066 0: ab 3067 Ab 3068 0: Ab 3069 \= Expect no match 3070 aB 3071 No match 3072 AB 3073 No match 3074 3075 /(a (?x)b c)d e/ 3076 a bcd e 3077 0: a bcd e 3078 1: a bc 3079 \= Expect no match 3080 a b cd e 3081 No match 3082 abcd e 3083 No match 3084 a bcde 3085 No match 3086 3087 /(a b(?x)c d (?-x)e f)/ 3088 a bcde f 3089 0: a bcde f 3090 1: a bcde f 3091 \= Expect no match 3092 abcdef 3093 No match 3094 3095 /(a(?i)b)c/ 3096 abc 3097 0: abc 3098 1: ab 3099 aBc 3100 0: aBc 3101 1: aB 3102 \= Expect no match 3103 abC 3104 No match 3105 aBC 3106 No match 3107 Abc 3108 No match 3109 ABc 3110 No match 3111 ABC 3112 No match 3113 AbC 3114 No match 3115 3116 /a(?i:b)c/ 3117 abc 3118 0: abc 3119 aBc 3120 0: aBc 3121 \= Expect no match 3122 ABC 3123 No match 3124 abC 3125 No match 3126 aBC 3127 No match 3128 3129 /a(?i:b)*c/ 3130 aBc 3131 0: aBc 3132 aBBc 3133 0: aBBc 3134 \= Expect no match 3135 aBC 3136 No match 3137 aBBC 3138 No match 3139 3140 /a(?=b(?i)c)\w\wd/ 3141 abcd 3142 0: abcd 3143 abCd 3144 0: abCd 3145 \= Expect no match 3146 aBCd 3147 No match 3148 abcD 3149 No match 3150 3151 /(?s-i:more.*than).*million/i 3152 more than million 3153 0: more than million 3154 more than MILLION 3155 0: more than MILLION 3156 more \n than Million 3157 0: more \x0a than Million 3158 \= Expect no match 3159 MORE THAN MILLION 3160 No match 3161 more \n than \n million 3162 No match 3163 3164 /(?:(?s-i)more.*than).*million/i 3165 more than million 3166 0: more than million 3167 more than MILLION 3168 0: more than MILLION 3169 more \n than Million 3170 0: more \x0a than Million 3171 \= Expect no match 3172 MORE THAN MILLION 3173 No match 3174 more \n than \n million 3175 No match 3176 3177 /(?>a(?i)b+)+c/ 3178 abc 3179 0: abc 3180 aBbc 3181 0: aBbc 3182 aBBc 3183 0: aBBc 3184 \= Expect no match 3185 Abc 3186 No match 3187 abAb 3188 No match 3189 abbC 3190 No match 3191 3192 /(?=a(?i)b)\w\wc/ 3193 abc 3194 0: abc 3195 aBc 3196 0: aBc 3197 \= Expect no match 3198 Ab 3199 No match 3200 abC 3201 No match 3202 aBC 3203 No match 3204 3205 /(?<=a(?i)b)(\w\w)c/ 3206 abxxc 3207 0: xxc 3208 1: xx 3209 aBxxc 3210 0: xxc 3211 1: xx 3212 \= Expect no match 3213 Abxxc 3214 No match 3215 ABxxc 3216 No match 3217 abxxC 3218 No match 3219 3220 /(?:(a)|b)(?(1)A|B)/ 3221 aA 3222 0: aA 3223 1: a 3224 bB 3225 0: bB 3226 \= Expect no match 3227 aB 3228 No match 3229 bA 3230 No match 3231 3232 /^(a)?(?(1)a|b)+$/ 3233 aa 3234 0: aa 3235 1: a 3236 b 3237 0: b 3238 bb 3239 0: bb 3240 \= Expect no match 3241 ab 3242 No match 3243 3244 # Perl gets this next one wrong if the pattern ends with $; in that case it 3245 # fails to match "12". 3246 3247 /^(?(?=abc)\w{3}:|\d\d)/ 3248 abc: 3249 0: abc: 3250 12 3251 0: 12 3252 123 3253 0: 12 3254 \= Expect no match 3255 xyz 3256 No match 3257 3258 /^(?(?!abc)\d\d|\w{3}:)$/ 3259 abc: 3260 0: abc: 3261 12 3262 0: 12 3263 \= Expect no match 3264 123 3265 No match 3266 xyz 3267 No match 3268 3269 /(?(?<=foo)bar|cat)/ 3270 foobar 3271 0: bar 3272 cat 3273 0: cat 3274 fcat 3275 0: cat 3276 focat 3277 0: cat 3278 \= Expect no match 3279 foocat 3280 No match 3281 3282 /(?(?<!foo)cat|bar)/ 3283 foobar 3284 0: bar 3285 cat 3286 0: cat 3287 fcat 3288 0: cat 3289 focat 3290 0: cat 3291 \= Expect no match 3292 foocat 3293 No match 3294 3295 /( \( )? [^()]+ (?(1) \) |) /x 3296 abcd 3297 0: abcd 3298 (abcd) 3299 0: (abcd) 3300 1: ( 3301 the quick (abcd) fox 3302 0: the quick 3303 (abcd 3304 0: abcd 3305 3306 /( \( )? [^()]+ (?(1) \) ) /x 3307 abcd 3308 0: abcd 3309 (abcd) 3310 0: (abcd) 3311 1: ( 3312 the quick (abcd) fox 3313 0: the quick 3314 (abcd 3315 0: abcd 3316 3317 /^(?(2)a|(1)(2))+$/ 3318 12 3319 0: 12 3320 1: 1 3321 2: 2 3322 12a 3323 0: 12a 3324 1: 1 3325 2: 2 3326 12aa 3327 0: 12aa 3328 1: 1 3329 2: 2 3330 \= Expect no match 3331 1234 3332 No match 3333 3334 /((?i)blah)\s+\1/ 3335 blah blah 3336 0: blah blah 3337 1: blah 3338 BLAH BLAH 3339 0: BLAH BLAH 3340 1: BLAH 3341 Blah Blah 3342 0: Blah Blah 3343 1: Blah 3344 blaH blaH 3345 0: blaH blaH 3346 1: blaH 3347 \= Expect no match 3348 blah BLAH 3349 No match 3350 Blah blah 3351 No match 3352 blaH blah 3353 No match 3354 3355 /((?i)blah)\s+(?i:\1)/ 3356 blah blah 3357 0: blah blah 3358 1: blah 3359 BLAH BLAH 3360 0: BLAH BLAH 3361 1: BLAH 3362 Blah Blah 3363 0: Blah Blah 3364 1: Blah 3365 blaH blaH 3366 0: blaH blaH 3367 1: blaH 3368 blah BLAH 3369 0: blah BLAH 3370 1: blah 3371 Blah blah 3372 0: Blah blah 3373 1: Blah 3374 blaH blah 3375 0: blaH blah 3376 1: blaH 3377 3378 /(?>a*)*/ 3379 a 3380 0: a 3381 aa 3382 0: aa 3383 aaaa 3384 0: aaaa 3385 3386 /(abc|)+/ 3387 abc 3388 0: abc 3389 1: 3390 abcabc 3391 0: abcabc 3392 1: 3393 abcabcabc 3394 0: abcabcabc 3395 1: 3396 xyz 3397 0: 3398 1: 3399 3400 /([a]*)*/ 3401 a 3402 0: a 3403 1: 3404 aaaaa 3405 0: aaaaa 3406 1: 3407 3408 /([ab]*)*/ 3409 a 3410 0: a 3411 1: 3412 b 3413 0: b 3414 1: 3415 ababab 3416 0: ababab 3417 1: 3418 aaaabcde 3419 0: aaaab 3420 1: 3421 bbbb 3422 0: bbbb 3423 1: 3424 3425 /([^a]*)*/ 3426 b 3427 0: b 3428 1: 3429 bbbb 3430 0: bbbb 3431 1: 3432 aaa 3433 0: 3434 1: 3435 3436 /([^ab]*)*/ 3437 cccc 3438 0: cccc 3439 1: 3440 abab 3441 0: 3442 1: 3443 3444 /([a]*?)*/ 3445 a 3446 0: 3447 1: 3448 aaaa 3449 0: 3450 1: 3451 3452 /([ab]*?)*/ 3453 a 3454 0: 3455 1: 3456 b 3457 0: 3458 1: 3459 abab 3460 0: 3461 1: 3462 baba 3463 0: 3464 1: 3465 3466 /([^a]*?)*/ 3467 b 3468 0: 3469 1: 3470 bbbb 3471 0: 3472 1: 3473 aaa 3474 0: 3475 1: 3476 3477 /([^ab]*?)*/ 3478 c 3479 0: 3480 1: 3481 cccc 3482 0: 3483 1: 3484 baba 3485 0: 3486 1: 3487 3488 /(?>a*)*/ 3489 a 3490 0: a 3491 aaabcde 3492 0: aaa 3493 3494 /((?>a*))*/ 3495 aaaaa 3496 0: aaaaa 3497 1: 3498 aabbaa 3499 0: aa 3500 1: 3501 3502 /((?>a*?))*/ 3503 aaaaa 3504 0: 3505 1: 3506 aabbaa 3507 0: 3508 1: 3509 3510 /(?(?=[^a-z]+[a-z]) \d{2}-[a-z]{3}-\d{2} | \d{2}-\d{2}-\d{2} ) /x 3511 12-sep-98 3512 0: 12-sep-98 3513 12-09-98 3514 0: 12-09-98 3515 \= Expect no match 3516 sep-12-98 3517 No match 3518 3519 /(?<=(foo))bar\1/ 3520 foobarfoo 3521 0: barfoo 3522 1: foo 3523 foobarfootling 3524 0: barfoo 3525 1: foo 3526 \= Expect no match 3527 foobar 3528 No match 3529 barfoo 3530 No match 3531 3532 /(?i:saturday|sunday)/ 3533 saturday 3534 0: saturday 3535 sunday 3536 0: sunday 3537 Saturday 3538 0: Saturday 3539 Sunday 3540 0: Sunday 3541 SATURDAY 3542 0: SATURDAY 3543 SUNDAY 3544 0: SUNDAY 3545 SunDay 3546 0: SunDay 3547 3548 /(a(?i)bc|BB)x/ 3549 abcx 3550 0: abcx 3551 1: abc 3552 aBCx 3553 0: aBCx 3554 1: aBC 3555 bbx 3556 0: bbx 3557 1: bb 3558 BBx 3559 0: BBx 3560 1: BB 3561 \= Expect no match 3562 abcX 3563 No match 3564 aBCX 3565 No match 3566 bbX 3567 No match 3568 BBX 3569 No match 3570 3571 /^([ab](?i)[cd]|[ef])/ 3572 ac 3573 0: ac 3574 1: ac 3575 aC 3576 0: aC 3577 1: aC 3578 bD 3579 0: bD 3580 1: bD 3581 elephant 3582 0: e 3583 1: e 3584 Europe 3585 0: E 3586 1: E 3587 frog 3588 0: f 3589 1: f 3590 France 3591 0: F 3592 1: F 3593 \= Expect no match 3594 Africa 3595 No match 3596 3597 /^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/ 3598 ab 3599 0: ab 3600 1: ab 3601 aBd 3602 0: aBd 3603 1: aBd 3604 xy 3605 0: xy 3606 1: xy 3607 xY 3608 0: xY 3609 1: xY 3610 zebra 3611 0: z 3612 1: z 3613 Zambesi 3614 0: Z 3615 1: Z 3616 \= Expect no match 3617 aCD 3618 No match 3619 XY 3620 No match 3621 3622 /(?<=foo\n)^bar/m 3623 foo\nbar 3624 0: bar 3625 \= Expect no match 3626 bar 3627 No match 3628 baz\nbar 3629 No match 3630 3631 /(?<=(?<!foo)bar)baz/ 3632 barbaz 3633 0: baz 3634 barbarbaz 3635 0: baz 3636 koobarbaz 3637 0: baz 3638 \= Expect no match 3639 baz 3640 No match 3641 foobarbaz 3642 No match 3643 3644 # The cases of aaaa and aaaaaa are missed out below because Perl does things 3645 # differently. We know that odd, and maybe incorrect, things happen with 3646 # recursive references in Perl, as far as 5.11.3 - see some stuff in test #2. 3647 3648 /^(a\1?){4}$/ 3649 aaaaa 3650 0: aaaaa 3651 1: a 3652 aaaaaaa 3653 0: aaaaaaa 3654 1: a 3655 aaaaaaaaaa 3656 0: aaaaaaaaaa 3657 1: aaaa 3658 \= Expect no match 3659 a 3660 No match 3661 aa 3662 No match 3663 aaa 3664 No match 3665 aaaaaaaa 3666 No match 3667 aaaaaaaaa 3668 No match 3669 aaaaaaaaaaa 3670 No match 3671 aaaaaaaaaaaa 3672 No match 3673 aaaaaaaaaaaaa 3674 No match 3675 aaaaaaaaaaaaaa 3676 No match 3677 aaaaaaaaaaaaaaa 3678 No match 3679 aaaaaaaaaaaaaaaa 3680 No match 3681 3682 /^(a\1?)(a\1?)(a\2?)(a\3?)$/ 3683 aaaa 3684 0: aaaa 3685 1: a 3686 2: a 3687 3: a 3688 4: a 3689 aaaaa 3690 0: aaaaa 3691 1: a 3692 2: aa 3693 3: a 3694 4: a 3695 aaaaaa 3696 0: aaaaaa 3697 1: a 3698 2: aa 3699 3: a 3700 4: aa 3701 aaaaaaa 3702 0: aaaaaaa 3703 1: a 3704 2: aa 3705 3: aaa 3706 4: a 3707 aaaaaaaaaa 3708 0: aaaaaaaaaa 3709 1: a 3710 2: aa 3711 3: aaa 3712 4: aaaa 3713 \= Expect no match 3714 a 3715 No match 3716 aa 3717 No match 3718 aaa 3719 No match 3720 aaaaaaaa 3721 No match 3722 aaaaaaaaa 3723 No match 3724 aaaaaaaaaaa 3725 No match 3726 aaaaaaaaaaaa 3727 No match 3728 aaaaaaaaaaaaa 3729 No match 3730 aaaaaaaaaaaaaa 3731 No match 3732 aaaaaaaaaaaaaaa 3733 No match 3734 aaaaaaaaaaaaaaaa 3735 No match 3736 3737 # The following tests are taken from the Perl 5.005 test suite; some of them 3738 # are compatible with 5.004, but I'd rather not have to sort them out. 3739 3740 /abc/ 3741 abc 3742 0: abc 3743 xabcy 3744 0: abc 3745 ababc 3746 0: abc 3747 \= Expect no match 3748 xbc 3749 No match 3750 axc 3751 No match 3752 abx 3753 No match 3754 3755 /ab*c/ 3756 abc 3757 0: abc 3758 3759 /ab*bc/ 3760 abc 3761 0: abc 3762 abbc 3763 0: abbc 3764 abbbbc 3765 0: abbbbc 3766 3767 /.{1}/ 3768 abbbbc 3769 0: a 3770 3771 /.{3,4}/ 3772 abbbbc 3773 0: abbb 3774 3775 /ab{0,}bc/ 3776 abbbbc 3777 0: abbbbc 3778 3779 /ab+bc/ 3780 abbc 3781 0: abbc 3782 \= Expect no match 3783 abc 3784 No match 3785 abq 3786 No match 3787 3788 /ab{1,}bc/ 3789 3790 /ab+bc/ 3791 abbbbc 3792 0: abbbbc 3793 3794 /ab{1,}bc/ 3795 abbbbc 3796 0: abbbbc 3797 3798 /ab{1,3}bc/ 3799 abbbbc 3800 0: abbbbc 3801 3802 /ab{3,4}bc/ 3803 abbbbc 3804 0: abbbbc 3805 3806 /ab{4,5}bc/ 3807 \= Expect no match 3808 abq 3809 No match 3810 abbbbc 3811 No match 3812 3813 /ab?bc/ 3814 abbc 3815 0: abbc 3816 abc 3817 0: abc 3818 3819 /ab{0,1}bc/ 3820 abc 3821 0: abc 3822 3823 /ab?bc/ 3824 3825 /ab?c/ 3826 abc 3827 0: abc 3828 3829 /ab{0,1}c/ 3830 abc 3831 0: abc 3832 3833 /^abc$/ 3834 abc 3835 0: abc 3836 \= Expect no match 3837 abbbbc 3838 No match 3839 abcc 3840 No match 3841 3842 /^abc/ 3843 abcc 3844 0: abc 3845 3846 /^abc$/ 3847 3848 /abc$/ 3849 aabc 3850 0: abc 3851 \= Expect no match 3852 aabcd 3853 No match 3854 3855 /^/ 3856 abc 3857 0: 3858 3859 /$/ 3860 abc 3861 0: 3862 3863 /a.c/ 3864 abc 3865 0: abc 3866 axc 3867 0: axc 3868 3869 /a.*c/ 3870 axyzc 3871 0: axyzc 3872 3873 /a[bc]d/ 3874 abd 3875 0: abd 3876 \= Expect no match 3877 axyzd 3878 No match 3879 abc 3880 No match 3881 3882 /a[b-d]e/ 3883 ace 3884 0: ace 3885 3886 /a[b-d]/ 3887 aac 3888 0: ac 3889 3890 /a[-b]/ 3891 a- 3892 0: a- 3893 3894 /a[b-]/ 3895 a- 3896 0: a- 3897 3898 /a]/ 3899 a] 3900 0: a] 3901 3902 /a[]]b/ 3903 a]b 3904 0: a]b 3905 3906 /a[^bc]d/ 3907 aed 3908 0: aed 3909 \= Expect no match 3910 abd 3911 No match 3912 abd 3913 No match 3914 3915 /a[^-b]c/ 3916 adc 3917 0: adc 3918 3919 /a[^]b]c/ 3920 adc 3921 0: adc 3922 a-c 3923 0: a-c 3924 \= Expect no match 3925 a]c 3926 No match 3927 3928 /\ba\b/ 3929 a- 3930 0: a 3931 -a 3932 0: a 3933 -a- 3934 0: a 3935 3936 /\by\b/ 3937 \= Expect no match 3938 xy 3939 No match 3940 yz 3941 No match 3942 xyz 3943 No match 3944 3945 /\Ba\B/ 3946 \= Expect no match 3947 a- 3948 No match 3949 -a 3950 No match 3951 -a- 3952 No match 3953 3954 /\By\b/ 3955 xy 3956 0: y 3957 3958 /\by\B/ 3959 yz 3960 0: y 3961 3962 /\By\B/ 3963 xyz 3964 0: y 3965 3966 /\w/ 3967 a 3968 0: a 3969 3970 /\W/ 3971 - 3972 0: - 3973 \= Expect no match 3974 a 3975 No match 3976 3977 /a\sb/ 3978 a b 3979 0: a b 3980 3981 /a\Sb/ 3982 a-b 3983 0: a-b 3984 \= Expect no match 3985 a b 3986 No match 3987 3988 /\d/ 3989 1 3990 0: 1 3991 3992 /\D/ 3993 - 3994 0: - 3995 \= Expect no match 3996 1 3997 No match 3998 3999 /[\w]/ 4000 a 4001 0: a 4002 4003 /[\W]/ 4004 - 4005 0: - 4006 \= Expect no match 4007 a 4008 No match 4009 4010 /a[\s]b/ 4011 a b 4012 0: a b 4013 4014 /a[\S]b/ 4015 a-b 4016 0: a-b 4017 \= Expect no match 4018 a b 4019 No match 4020 4021 /[\d]/ 4022 1 4023 0: 1 4024 4025 /[\D]/ 4026 - 4027 0: - 4028 \= Expect no match 4029 1 4030 No match 4031 4032 /ab|cd/ 4033 abc 4034 0: ab 4035 abcd 4036 0: ab 4037 4038 /()ef/ 4039 def 4040 0: ef 4041 1: 4042 4043 /$b/ 4044 4045 /a\(b/ 4046 a(b 4047 0: a(b 4048 4049 /a\(*b/ 4050 ab 4051 0: ab 4052 a((b 4053 0: a((b 4054 4055 /a\\b/ 4056 a\\b 4057 0: a\b 4058 4059 /((a))/ 4060 abc 4061 0: a 4062 1: a 4063 2: a 4064 4065 /(a)b(c)/ 4066 abc 4067 0: abc 4068 1: a 4069 2: c 4070 4071 /a+b+c/ 4072 aabbabc 4073 0: abc 4074 4075 /a{1,}b{1,}c/ 4076 aabbabc 4077 0: abc 4078 4079 /a.+?c/ 4080 abcabc 4081 0: abc 4082 4083 /(a+|b)*/ 4084 ab 4085 0: ab 4086 1: b 4087 4088 /(a+|b){0,}/ 4089 ab 4090 0: ab 4091 1: b 4092 4093 /(a+|b)+/ 4094 ab 4095 0: ab 4096 1: b 4097 4098 /(a+|b){1,}/ 4099 ab 4100 0: ab 4101 1: b 4102 4103 /(a+|b)?/ 4104 ab 4105 0: a 4106 1: a 4107 4108 /(a+|b){0,1}/ 4109 ab 4110 0: a 4111 1: a 4112 4113 /[^ab]*/ 4114 cde 4115 0: cde 4116 4117 /abc/ 4118 \= Expect no match 4119 b 4120 No match 4121 4122 /a*/ 4123 \ 4124 0: 4125 4126 /([abc])*d/ 4127 abbbcd 4128 0: abbbcd 4129 1: c 4130 4131 /([abc])*bcd/ 4132 abcd 4133 0: abcd 4134 1: a 4135 4136 /a|b|c|d|e/ 4137 e 4138 0: e 4139 4140 /(a|b|c|d|e)f/ 4141 ef 4142 0: ef 4143 1: e 4144 4145 /abcd*efg/ 4146 abcdefg 4147 0: abcdefg 4148 4149 /ab*/ 4150 xabyabbbz 4151 0: ab 4152 xayabbbz 4153 0: a 4154 4155 /(ab|cd)e/ 4156 abcde 4157 0: cde 4158 1: cd 4159 4160 /[abhgefdc]ij/ 4161 hij 4162 0: hij 4163 4164 /^(ab|cd)e/ 4165 4166 /(abc|)ef/ 4167 abcdef 4168 0: ef 4169 1: 4170 4171 /(a|b)c*d/ 4172 abcd 4173 0: bcd 4174 1: b 4175 4176 /(ab|ab*)bc/ 4177 abc 4178 0: abc 4179 1: a 4180 4181 /a([bc]*)c*/ 4182 abc 4183 0: abc 4184 1: bc 4185 4186 /a([bc]*)(c*d)/ 4187 abcd 4188 0: abcd 4189 1: bc 4190 2: d 4191 4192 /a([bc]+)(c*d)/ 4193 abcd 4194 0: abcd 4195 1: bc 4196 2: d 4197 4198 /a([bc]*)(c+d)/ 4199 abcd 4200 0: abcd 4201 1: b 4202 2: cd 4203 4204 /a[bcd]*dcdcde/ 4205 adcdcde 4206 0: adcdcde 4207 4208 /a[bcd]+dcdcde/ 4209 \= Expect no match 4210 abcde 4211 No match 4212 adcdcde 4213 No match 4214 4215 /(ab|a)b*c/ 4216 abc 4217 0: abc 4218 1: ab 4219 4220 /((a)(b)c)(d)/ 4221 abcd 4222 0: abcd 4223 1: abc 4224 2: a 4225 3: b 4226 4: d 4227 4228 /[a-zA-Z_][a-zA-Z0-9_]*/ 4229 alpha 4230 0: alpha 4231 4232 /^a(bc+|b[eh])g|.h$/ 4233 abh 4234 0: bh 4235 4236 /(bc+d$|ef*g.|h?i(j|k))/ 4237 effgz 4238 0: effgz 4239 1: effgz 4240 ij 4241 0: ij 4242 1: ij 4243 2: j 4244 reffgz 4245 0: effgz 4246 1: effgz 4247 \= Expect no match 4248 effg 4249 No match 4250 bcdd 4251 No match 4252 4253 /((((((((((a))))))))))/ 4254 a 4255 0: a 4256 1: a 4257 2: a 4258 3: a 4259 4: a 4260 5: a 4261 6: a 4262 7: a 4263 8: a 4264 9: a 4265 10: a 4266 4267 /((((((((((a))))))))))\10/ 4268 aa 4269 0: aa 4270 1: a 4271 2: a 4272 3: a 4273 4: a 4274 5: a 4275 6: a 4276 7: a 4277 8: a 4278 9: a 4279 10: a 4280 4281 /(((((((((a)))))))))/ 4282 a 4283 0: a 4284 1: a 4285 2: a 4286 3: a 4287 4: a 4288 5: a 4289 6: a 4290 7: a 4291 8: a 4292 9: a 4293 4294 /multiple words of text/ 4295 \= Expect no match 4296 aa 4297 No match 4298 uh-uh 4299 No match 4300 4301 /multiple words/ 4302 multiple words, yeah 4303 0: multiple words 4304 4305 /(.*)c(.*)/ 4306 abcde 4307 0: abcde 4308 1: ab 4309 2: de 4310 4311 /\((.*), (.*)\)/ 4312 (a, b) 4313 0: (a, b) 4314 1: a 4315 2: b 4316 4317 /[k]/ 4318 4319 /abcd/ 4320 abcd 4321 0: abcd 4322 4323 /a(bc)d/ 4324 abcd 4325 0: abcd 4326 1: bc 4327 4328 /a[-]?c/ 4329 ac 4330 0: ac 4331 4332 /(abc)\1/ 4333 abcabc 4334 0: abcabc 4335 1: abc 4336 4337 /([a-c]*)\1/ 4338 abcabc 4339 0: abcabc 4340 1: abc 4341 4342 /(a)|\1/ 4343 a 4344 0: a 4345 1: a 4346 ab 4347 0: a 4348 1: a 4349 \= Expect no match 4350 x 4351 No match 4352 4353 /(([a-c])b*?\2)*/ 4354 ababbbcbc 4355 0: ababb 4356 1: bb 4357 2: b 4358 4359 /(([a-c])b*?\2){3}/ 4360 ababbbcbc 4361 0: ababbbcbc 4362 1: cbc 4363 2: c 4364 4365 /((\3|b)\2(a)x)+/ 4366 aaaxabaxbaaxbbax 4367 0: bbax 4368 1: bbax 4369 2: b 4370 3: a 4371 4372 /((\3|b)\2(a)){2,}/ 4373 bbaababbabaaaaabbaaaabba 4374 0: bbaaaabba 4375 1: bba 4376 2: b 4377 3: a 4378 4379 /abc/i 4380 ABC 4381 0: ABC 4382 XABCY 4383 0: ABC 4384 ABABC 4385 0: ABC 4386 \= Expect no match 4387 aaxabxbaxbbx 4388 No match 4389 XBC 4390 No match 4391 AXC 4392 No match 4393 ABX 4394 No match 4395 4396 /ab*c/i 4397 ABC 4398 0: ABC 4399 4400 /ab*bc/i 4401 ABC 4402 0: ABC 4403 ABBC 4404 0: ABBC 4405 4406 /ab*?bc/i 4407 ABBBBC 4408 0: ABBBBC 4409 4410 /ab{0,}?bc/i 4411 ABBBBC 4412 0: ABBBBC 4413 4414 /ab+?bc/i 4415 ABBC 4416 0: ABBC 4417 4418 /ab+bc/i 4419 \= Expect no match 4420 ABC 4421 No match 4422 ABQ 4423 No match 4424 4425 /ab{1,}bc/i 4426 4427 /ab+bc/i 4428 ABBBBC 4429 0: ABBBBC 4430 4431 /ab{1,}?bc/i 4432 ABBBBC 4433 0: ABBBBC 4434 4435 /ab{1,3}?bc/i 4436 ABBBBC 4437 0: ABBBBC 4438 4439 /ab{3,4}?bc/i 4440 ABBBBC 4441 0: ABBBBC 4442 4443 /ab{4,5}?bc/i 4444 \= Expect no match 4445 ABQ 4446 No match 4447 ABBBBC 4448 No match 4449 4450 /ab??bc/i 4451 ABBC 4452 0: ABBC 4453 ABC 4454 0: ABC 4455 4456 /ab{0,1}?bc/i 4457 ABC 4458 0: ABC 4459 4460 /ab??bc/i 4461 4462 /ab??c/i 4463 ABC 4464 0: ABC 4465 4466 /ab{0,1}?c/i 4467 ABC 4468 0: ABC 4469 4470 /^abc$/i 4471 ABC 4472 0: ABC 4473 \= Expect no match 4474 ABBBBC 4475 No match 4476 ABCC 4477 No match 4478 4479 /^abc/i 4480 ABCC 4481 0: ABC 4482 4483 /^abc$/i 4484 4485 /abc$/i 4486 AABC 4487 0: ABC 4488 4489 /^/i 4490 ABC 4491 0: 4492 4493 /$/i 4494 ABC 4495 0: 4496 4497 /a.c/i 4498 ABC 4499 0: ABC 4500 AXC 4501 0: AXC 4502 4503 /a.*?c/i 4504 AXYZC 4505 0: AXYZC 4506 4507 /a.*c/i 4508 AABC 4509 0: AABC 4510 \= Expect no match 4511 AXYZD 4512 No match 4513 4514 /a[bc]d/i 4515 ABD 4516 0: ABD 4517 4518 /a[b-d]e/i 4519 ACE 4520 0: ACE 4521 \= Expect no match 4522 ABC 4523 No match 4524 ABD 4525 No match 4526 4527 /a[b-d]/i 4528 AAC 4529 0: AC 4530 4531 /a[-b]/i 4532 A- 4533 0: A- 4534 4535 /a[b-]/i 4536 A- 4537 0: A- 4538 4539 /a]/i 4540 A] 4541 0: A] 4542 4543 /a[]]b/i 4544 A]B 4545 0: A]B 4546 4547 /a[^bc]d/i 4548 AED 4549 0: AED 4550 4551 /a[^-b]c/i 4552 ADC 4553 0: ADC 4554 \= Expect no match 4555 ABD 4556 No match 4557 A-C 4558 No match 4559 4560 /a[^]b]c/i 4561 ADC 4562 0: ADC 4563 4564 /ab|cd/i 4565 ABC 4566 0: AB 4567 ABCD 4568 0: AB 4569 4570 /()ef/i 4571 DEF 4572 0: EF 4573 1: 4574 4575 /$b/i 4576 \= Expect no match 4577 A]C 4578 No match 4579 B 4580 No match 4581 4582 /a\(b/i 4583 A(B 4584 0: A(B 4585 4586 /a\(*b/i 4587 AB 4588 0: AB 4589 A((B 4590 0: A((B 4591 4592 /a\\b/i 4593 A\\b 4594 0: A\b 4595 a\\B 4596 0: a\B 4597 4598 /((a))/i 4599 ABC 4600 0: A 4601 1: A 4602 2: A 4603 4604 /(a)b(c)/i 4605 ABC 4606 0: ABC 4607 1: A 4608 2: C 4609 4610 /a+b+c/i 4611 AABBABC 4612 0: ABC 4613 4614 /a{1,}b{1,}c/i 4615 AABBABC 4616 0: ABC 4617 4618 /a.+?c/i 4619 ABCABC 4620 0: ABC 4621 4622 /a.*?c/i 4623 ABCABC 4624 0: ABC 4625 4626 /a.{0,5}?c/i 4627 ABCABC 4628 0: ABC 4629 4630 /(a+|b)*/i 4631 AB 4632 0: AB 4633 1: B 4634 4635 /(a+|b){0,}/i 4636 AB 4637 0: AB 4638 1: B 4639 4640 /(a+|b)+/i 4641 AB 4642 0: AB 4643 1: B 4644 4645 /(a+|b){1,}/i 4646 AB 4647 0: AB 4648 1: B 4649 4650 /(a+|b)?/i 4651 AB 4652 0: A 4653 1: A 4654 4655 /(a+|b){0,1}/i 4656 AB 4657 0: A 4658 1: A 4659 4660 /(a+|b){0,1}?/i 4661 AB 4662 0: 4663 4664 /[^ab]*/i 4665 CDE 4666 0: CDE 4667 4668 /([abc])*d/i 4669 ABBBCD 4670 0: ABBBCD 4671 1: C 4672 4673 /([abc])*bcd/i 4674 ABCD 4675 0: ABCD 4676 1: A 4677 4678 /a|b|c|d|e/i 4679 E 4680 0: E 4681 4682 /(a|b|c|d|e)f/i 4683 EF 4684 0: EF 4685 1: E 4686 4687 /abcd*efg/i 4688 ABCDEFG 4689 0: ABCDEFG 4690 4691 /ab*/i 4692 XABYABBBZ 4693 0: AB 4694 XAYABBBZ 4695 0: A 4696 4697 /(ab|cd)e/i 4698 ABCDE 4699 0: CDE 4700 1: CD 4701 4702 /[abhgefdc]ij/i 4703 HIJ 4704 0: HIJ 4705 4706 /^(ab|cd)e/i 4707 \= Expect no match 4708 ABCDE 4709 No match 4710 4711 /(abc|)ef/i 4712 ABCDEF 4713 0: EF 4714 1: 4715 4716 /(a|b)c*d/i 4717 ABCD 4718 0: BCD 4719 1: B 4720 4721 /(ab|ab*)bc/i 4722 ABC 4723 0: ABC 4724 1: A 4725 4726 /a([bc]*)c*/i 4727 ABC 4728 0: ABC 4729 1: BC 4730 4731 /a([bc]*)(c*d)/i 4732 ABCD 4733 0: ABCD 4734 1: BC 4735 2: D 4736 4737 /a([bc]+)(c*d)/i 4738 ABCD 4739 0: ABCD 4740 1: BC 4741 2: D 4742 4743 /a([bc]*)(c+d)/i 4744 ABCD 4745 0: ABCD 4746 1: B 4747 2: CD 4748 4749 /a[bcd]*dcdcde/i 4750 ADCDCDE 4751 0: ADCDCDE 4752 4753 /a[bcd]+dcdcde/i 4754 4755 /(ab|a)b*c/i 4756 ABC 4757 0: ABC 4758 1: AB 4759 4760 /((a)(b)c)(d)/i 4761 ABCD 4762 0: ABCD 4763 1: ABC 4764 2: A 4765 3: B 4766 4: D 4767 4768 /[a-zA-Z_][a-zA-Z0-9_]*/i 4769 ALPHA 4770 0: ALPHA 4771 4772 /^a(bc+|b[eh])g|.h$/i 4773 ABH 4774 0: BH 4775 4776 /(bc+d$|ef*g.|h?i(j|k))/i 4777 EFFGZ 4778 0: EFFGZ 4779 1: EFFGZ 4780 IJ 4781 0: IJ 4782 1: IJ 4783 2: J 4784 REFFGZ 4785 0: EFFGZ 4786 1: EFFGZ 4787 \= Expect no match 4788 ADCDCDE 4789 No match 4790 EFFG 4791 No match 4792 BCDD 4793 No match 4794 4795 /((((((((((a))))))))))/i 4796 A 4797 0: A 4798 1: A 4799 2: A 4800 3: A 4801 4: A 4802 5: A 4803 6: A 4804 7: A 4805 8: A 4806 9: A 4807 10: A 4808 4809 /((((((((((a))))))))))\10/i 4810 AA 4811 0: AA 4812 1: A 4813 2: A 4814 3: A 4815 4: A 4816 5: A 4817 6: A 4818 7: A 4819 8: A 4820 9: A 4821 10: A 4822 4823 /(((((((((a)))))))))/i 4824 A 4825 0: A 4826 1: A 4827 2: A 4828 3: A 4829 4: A 4830 5: A 4831 6: A 4832 7: A 4833 8: A 4834 9: A 4835 4836 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))/i 4837 A 4838 0: A 4839 1: A 4840 4841 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/i 4842 C 4843 0: C 4844 1: C 4845 4846 /multiple words of text/i 4847 \= Expect no match 4848 AA 4849 No match 4850 UH-UH 4851 No match 4852 4853 /multiple words/i 4854 MULTIPLE WORDS, YEAH 4855 0: MULTIPLE WORDS 4856 4857 /(.*)c(.*)/i 4858 ABCDE 4859 0: ABCDE 4860 1: AB 4861 2: DE 4862 4863 /\((.*), (.*)\)/i 4864 (A, B) 4865 0: (A, B) 4866 1: A 4867 2: B 4868 4869 /[k]/i 4870 4871 /abcd/i 4872 ABCD 4873 0: ABCD 4874 4875 /a(bc)d/i 4876 ABCD 4877 0: ABCD 4878 1: BC 4879 4880 /a[-]?c/i 4881 AC 4882 0: AC 4883 4884 /(abc)\1/i 4885 ABCABC 4886 0: ABCABC 4887 1: ABC 4888 4889 /([a-c]*)\1/i 4890 ABCABC 4891 0: ABCABC 4892 1: ABC 4893 4894 /a(?!b)./ 4895 abad 4896 0: ad 4897 4898 /a(?=d)./ 4899 abad 4900 0: ad 4901 4902 /a(?=c|d)./ 4903 abad 4904 0: ad 4905 4906 /a(?:b|c|d)(.)/ 4907 ace 4908 0: ace 4909 1: e 4910 4911 /a(?:b|c|d)*(.)/ 4912 ace 4913 0: ace 4914 1: e 4915 4916 /a(?:b|c|d)+?(.)/ 4917 ace 4918 0: ace 4919 1: e 4920 acdbcdbe 4921 0: acd 4922 1: d 4923 4924 /a(?:b|c|d)+(.)/ 4925 acdbcdbe 4926 0: acdbcdbe 4927 1: e 4928 4929 /a(?:b|c|d){2}(.)/ 4930 acdbcdbe 4931 0: acdb 4932 1: b 4933 4934 /a(?:b|c|d){4,5}(.)/ 4935 acdbcdbe 4936 0: acdbcdb 4937 1: b 4938 4939 /a(?:b|c|d){4,5}?(.)/ 4940 acdbcdbe 4941 0: acdbcd 4942 1: d 4943 4944 /((foo)|(bar))*/ 4945 foobar 4946 0: foobar 4947 1: bar 4948 2: foo 4949 3: bar 4950 4951 /a(?:b|c|d){6,7}(.)/ 4952 acdbcdbe 4953 0: acdbcdbe 4954 1: e 4955 4956 /a(?:b|c|d){6,7}?(.)/ 4957 acdbcdbe 4958 0: acdbcdbe 4959 1: e 4960 4961 /a(?:b|c|d){5,6}(.)/ 4962 acdbcdbe 4963 0: acdbcdbe 4964 1: e 4965 4966 /a(?:b|c|d){5,6}?(.)/ 4967 acdbcdbe 4968 0: acdbcdb 4969 1: b 4970 4971 /a(?:b|c|d){5,7}(.)/ 4972 acdbcdbe 4973 0: acdbcdbe 4974 1: e 4975 4976 /a(?:b|c|d){5,7}?(.)/ 4977 acdbcdbe 4978 0: acdbcdb 4979 1: b 4980 4981 /a(?:b|(c|e){1,2}?|d)+?(.)/ 4982 ace 4983 0: ace 4984 1: c 4985 2: e 4986 4987 /^(.+)?B/ 4988 AB 4989 0: AB 4990 1: A 4991 4992 /^([^a-z])|(\^)$/ 4993 . 4994 0: . 4995 1: . 4996 4997 /^[<>]&/ 4998 <&OUT 4999 0: <& 5000 5001 /^(a\1?){4}$/ 5002 aaaaaaaaaa 5003 0: aaaaaaaaaa 5004 1: aaaa 5005 \= Expect no match 5006 AB 5007 No match 5008 aaaaaaaaa 5009 No match 5010 aaaaaaaaaaa 5011 No match 5012 5013 /^(a(?(1)\1)){4}$/ 5014 aaaaaaaaaa 5015 0: aaaaaaaaaa 5016 1: aaaa 5017 \= Expect no match 5018 aaaaaaaaa 5019 No match 5020 aaaaaaaaaaa 5021 No match 5022 5023 /(?:(f)(o)(o)|(b)(a)(r))*/ 5024 foobar 5025 0: foobar 5026 1: f 5027 2: o 5028 3: o 5029 4: b 5030 5: a 5031 6: r 5032 5033 /(?<=a)b/ 5034 ab 5035 0: b 5036 \= Expect no match 5037 cb 5038 No match 5039 b 5040 No match 5041 5042 /(?<!c)b/ 5043 ab 5044 0: b 5045 b 5046 0: b 5047 b 5048 0: b 5049 5050 /(?:..)*a/ 5051 aba 5052 0: aba 5053 5054 /(?:..)*?a/ 5055 aba 5056 0: a 5057 5058 /^(?:b|a(?=(.)))*\1/ 5059 abc 5060 0: ab 5061 1: b 5062 5063 /^(){3,5}/ 5064 abc 5065 0: 5066 1: 5067 5068 /^(a+)*ax/ 5069 aax 5070 0: aax 5071 1: a 5072 5073 /^((a|b)+)*ax/ 5074 aax 5075 0: aax 5076 1: a 5077 2: a 5078 5079 /^((a|bc)+)*ax/ 5080 aax 5081 0: aax 5082 1: a 5083 2: a 5084 5085 /(a|x)*ab/ 5086 cab 5087 0: ab 5088 5089 /(a)*ab/ 5090 cab 5091 0: ab 5092 5093 /(?:(?i)a)b/ 5094 ab 5095 0: ab 5096 5097 /((?i)a)b/ 5098 ab 5099 0: ab 5100 1: a 5101 5102 /(?:(?i)a)b/ 5103 Ab 5104 0: Ab 5105 5106 /((?i)a)b/ 5107 Ab 5108 0: Ab 5109 1: A 5110 5111 /(?:(?i)a)b/ 5112 \= Expect no match 5113 cb 5114 No match 5115 aB 5116 No match 5117 5118 /((?i)a)b/ 5119 5120 /(?i:a)b/ 5121 ab 5122 0: ab 5123 5124 /((?i:a))b/ 5125 ab 5126 0: ab 5127 1: a 5128 5129 /(?i:a)b/ 5130 Ab 5131 0: Ab 5132 5133 /((?i:a))b/ 5134 Ab 5135 0: Ab 5136 1: A 5137 5138 /(?i:a)b/ 5139 \= Expect no match 5140 aB 5141 No match 5142 aB 5143 No match 5144 5145 /((?i:a))b/ 5146 5147 /(?:(?-i)a)b/i 5148 ab 5149 0: ab 5150 5151 /((?-i)a)b/i 5152 ab 5153 0: ab 5154 1: a 5155 5156 /(?:(?-i)a)b/i 5157 aB 5158 0: aB 5159 5160 /((?-i)a)b/i 5161 aB 5162 0: aB 5163 1: a 5164 5165 /(?:(?-i)a)b/i 5166 aB 5167 0: aB 5168 \= Expect no match 5169 Ab 5170 No match 5171 AB 5172 No match 5173 5174 /(?-i:a)b/i 5175 ab 5176 0: ab 5177 5178 /((?-i:a))b/i 5179 ab 5180 0: ab 5181 1: a 5182 5183 /(?-i:a)b/i 5184 aB 5185 0: aB 5186 5187 /((?-i:a))b/i 5188 aB 5189 0: aB 5190 1: a 5191 5192 /(?-i:a)b/i 5193 \= Expect no match 5194 AB 5195 No match 5196 Ab 5197 No match 5198 5199 /((?-i:a))b/i 5200 5201 /(?-i:a)b/i 5202 aB 5203 0: aB 5204 5205 /((?-i:a))b/i 5206 aB 5207 0: aB 5208 1: a 5209 5210 /(?-i:a)b/i 5211 \= Expect no match 5212 Ab 5213 No match 5214 AB 5215 No match 5216 5217 /((?-i:a))b/i 5218 5219 /((?-i:a.))b/i 5220 \= Expect no match 5221 AB 5222 No match 5223 a\nB 5224 No match 5225 5226 /((?s-i:a.))b/i 5227 a\nB 5228 0: a\x0aB 5229 1: a\x0a 5230 5231 /(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))/ 5232 cabbbb 5233 0: cabbbb 5234 5235 /(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/ 5236 caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 5237 0: caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 5238 5239 /(ab)\d\1/i 5240 Ab4ab 5241 0: Ab4ab 5242 1: Ab 5243 ab4Ab 5244 0: ab4Ab 5245 1: ab 5246 5247 /foo\w*\d{4}baz/ 5248 foobar1234baz 5249 0: foobar1234baz 5250 5251 /x(~~)*(?:(?:F)?)?/ 5252 x~~ 5253 0: x~~ 5254 1: ~~ 5255 5256 /^a(?#xxx){3}c/ 5257 aaac 5258 0: aaac 5259 5260 /^a (?#xxx) (?#yyy) {3}c/x 5261 aaac 5262 0: aaac 5263 5264 /(?<![cd])b/ 5265 \= Expect no match 5266 B\nB 5267 No match 5268 dbcb 5269 No match 5270 5271 /(?<![cd])[ab]/ 5272 dbaacb 5273 0: a 5274 5275 /(?<!(c|d))b/ 5276 5277 /(?<!(c|d))[ab]/ 5278 dbaacb 5279 0: a 5280 5281 /(?<!cd)[ab]/ 5282 cdaccb 5283 0: b 5284 5285 /^(?:a?b?)*$/ 5286 \ 5287 0: 5288 a 5289 0: a 5290 ab 5291 0: ab 5292 aaa 5293 0: aaa 5294 \= Expect no match 5295 dbcb 5296 No match 5297 a-- 5298 No match 5299 aa-- 5300 No match 5301 5302 /((?s)^a(.))((?m)^b$)/ 5303 a\nb\nc\n 5304 0: a\x0ab 5305 1: a\x0a 5306 2: \x0a 5307 3: b 5308 5309 /((?m)^b$)/ 5310 a\nb\nc\n 5311 0: b 5312 1: b 5313 5314 /(?m)^b/ 5315 a\nb\n 5316 0: b 5317 5318 /(?m)^(b)/ 5319 a\nb\n 5320 0: b 5321 1: b 5322 5323 /((?m)^b)/ 5324 a\nb\n 5325 0: b 5326 1: b 5327 5328 /\n((?m)^b)/ 5329 a\nb\n 5330 0: \x0ab 5331 1: b 5332 5333 /((?s).)c(?!.)/ 5334 a\nb\nc\n 5335 0: \x0ac 5336 1: \x0a 5337 a\nb\nc\n 5338 0: \x0ac 5339 1: \x0a 5340 5341 /((?s)b.)c(?!.)/ 5342 a\nb\nc\n 5343 0: b\x0ac 5344 1: b\x0a 5345 a\nb\nc\n 5346 0: b\x0ac 5347 1: b\x0a 5348 5349 /^b/ 5350 5351 /()^b/ 5352 \= Expect no match 5353 a\nb\nc\n 5354 No match 5355 a\nb\nc\n 5356 No match 5357 5358 /((?m)^b)/ 5359 a\nb\nc\n 5360 0: b 5361 1: b 5362 5363 /(x)?(?(1)a|b)/ 5364 \= Expect no match 5365 a 5366 No match 5367 a 5368 No match 5369 5370 /(x)?(?(1)b|a)/ 5371 a 5372 0: a 5373 5374 /()?(?(1)b|a)/ 5375 a 5376 0: a 5377 5378 /()(?(1)b|a)/ 5379 5380 /()?(?(1)a|b)/ 5381 a 5382 0: a 5383 1: 5384 5385 /^(\()?blah(?(1)(\)))$/ 5386 (blah) 5387 0: (blah) 5388 1: ( 5389 2: ) 5390 blah 5391 0: blah 5392 \= Expect no match 5393 a 5394 No match 5395 blah) 5396 No match 5397 (blah 5398 No match 5399 5400 /^(\(+)?blah(?(1)(\)))$/ 5401 (blah) 5402 0: (blah) 5403 1: ( 5404 2: ) 5405 blah 5406 0: blah 5407 \= Expect no match 5408 blah) 5409 No match 5410 (blah 5411 No match 5412 5413 /(?(?!a)a|b)/ 5414 5415 /(?(?!a)b|a)/ 5416 a 5417 0: a 5418 5419 /(?(?=a)b|a)/ 5420 \= Expect no match 5421 a 5422 No match 5423 a 5424 No match 5425 5426 /(?(?=a)a|b)/ 5427 a 5428 0: a 5429 5430 /(?=(a+?))(\1ab)/ 5431 aaab 5432 0: aab 5433 1: a 5434 2: aab 5435 5436 /^(?=(a+?))\1ab/ 5437 5438 /(\w+:)+/ 5439 one: 5440 0: one: 5441 1: one: 5442 5443 /$(?<=^(a))/ 5444 a 5445 0: 5446 1: a 5447 5448 /(?=(a+?))(\1ab)/ 5449 aaab 5450 0: aab 5451 1: a 5452 2: aab 5453 5454 /^(?=(a+?))\1ab/ 5455 \= Expect no match 5456 aaab 5457 No match 5458 aaab 5459 No match 5460 5461 /([\w:]+::)?(\w+)$/ 5462 abcd 5463 0: abcd 5464 1: <unset> 5465 2: abcd 5466 xy:z:::abcd 5467 0: xy:z:::abcd 5468 1: xy:z::: 5469 2: abcd 5470 5471 /^[^bcd]*(c+)/ 5472 aexycd 5473 0: aexyc 5474 1: c 5475 5476 /(a*)b+/ 5477 caab 5478 0: aab 5479 1: aa 5480 5481 /([\w:]+::)?(\w+)$/ 5482 abcd 5483 0: abcd 5484 1: <unset> 5485 2: abcd 5486 xy:z:::abcd 5487 0: xy:z:::abcd 5488 1: xy:z::: 5489 2: abcd 5490 \= Expect no match 5491 abcd: 5492 No match 5493 abcd: 5494 No match 5495 5496 /^[^bcd]*(c+)/ 5497 aexycd 5498 0: aexyc 5499 1: c 5500 5501 /(>a+)ab/ 5502 5503 /(?>a+)b/ 5504 aaab 5505 0: aaab 5506 5507 /([[:]+)/ 5508 a:[b]: 5509 0: :[ 5510 1: :[ 5511 5512 /([[=]+)/ 5513 a=[b]= 5514 0: =[ 5515 1: =[ 5516 5517 /([[.]+)/ 5518 a.[b]. 5519 0: .[ 5520 1: .[ 5521 5522 /((?>a+)b)/ 5523 aaab 5524 0: aaab 5525 1: aaab 5526 5527 /(?>(a+))b/ 5528 aaab 5529 0: aaab 5530 1: aaa 5531 5532 /((?>[^()]+)|\([^()]*\))+/ 5533 ((abc(ade)ufh()()x 5534 0: abc(ade)ufh()()x 5535 1: x 5536 5537 /a\Z/ 5538 \= Expect no match 5539 aaab 5540 No match 5541 a\nb\n 5542 No match 5543 5544 /b\Z/ 5545 a\nb\n 5546 0: b 5547 5548 /b\z/ 5549 5550 /b\Z/ 5551 a\nb 5552 0: b 5553 5554 /b\z/ 5555 a\nb 5556 0: b 5557 5558 /^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/ 5559 a 5560 0: a 5561 1: 5562 abc 5563 0: abc 5564 1: 5565 a-b 5566 0: a-b 5567 1: 5568 0-9 5569 0: 0-9 5570 1: 5571 a.b 5572 0: a.b 5573 1: 5574 5.6.7 5575 0: 5.6.7 5576 1: 5577 the.quick.brown.fox 5578 0: the.quick.brown.fox 5579 1: 5580 a100.b200.300c 5581 0: a100.b200.300c 5582 1: 5583 12-ab.1245 5584 0: 12-ab.1245 5585 1: 5586 \= Expect no match 5587 \ 5588 No match 5589 .a 5590 No match 5591 -a 5592 No match 5593 a- 5594 No match 5595 a. 5596 No match 5597 a_b 5598 No match 5599 a.- 5600 No match 5601 a.. 5602 No match 5603 ab..bc 5604 No match 5605 the.quick.brown.fox- 5606 No match 5607 the.quick.brown.fox. 5608 No match 5609 the.quick.brown.fox_ 5610 No match 5611 the.quick.brown.fox+ 5612 No match 5613 5614 /(?>.*)(?<=(abcd|wxyz))/ 5615 alphabetabcd 5616 0: alphabetabcd 5617 1: abcd 5618 endingwxyz 5619 0: endingwxyz 5620 1: wxyz 5621 \= Expect no match 5622 a rather long string that doesn't end with one of them 5623 No match 5624 5625 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/ 5626 word cat dog elephant mussel cow horse canary baboon snake shark otherword 5627 0: word cat dog elephant mussel cow horse canary baboon snake shark otherword 5628 \= Expect no match 5629 word cat dog elephant mussel cow horse canary baboon snake shark 5630 No match 5631 5632 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/ 5633 \= Expect no match 5634 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 5635 No match 5636 5637 /(?<=\d{3}(?!999))foo/ 5638 999foo 5639 0: foo 5640 123999foo 5641 0: foo 5642 \= Expect no match 5643 123abcfoo 5644 No match 5645 5646 /(?<=(?!...999)\d{3})foo/ 5647 999foo 5648 0: foo 5649 123999foo 5650 0: foo 5651 \= Expect no match 5652 123abcfoo 5653 No match 5654 5655 /(?<=\d{3}(?!999)...)foo/ 5656 123abcfoo 5657 0: foo 5658 123456foo 5659 0: foo 5660 \= Expect no match 5661 123999foo 5662 No match 5663 5664 /(?<=\d{3}...)(?<!999)foo/ 5665 123abcfoo 5666 0: foo 5667 123456foo 5668 0: foo 5669 \= Expect no match 5670 123999foo 5671 No match 5672 5673 /<a[\s]+href[\s]*=[\s]* # find <a href= 5674 ([\"\'])? # find single or double quote 5675 (?(1) (.*?)\1 | ([^\s]+)) # if quote found, match up to next matching 5676 # quote, otherwise match up to next space 5677 /isx 5678 <a href=abcd xyz 5679 0: <a href=abcd 5680 1: <unset> 5681 2: <unset> 5682 3: abcd 5683 <a href=\"abcd xyz pqr\" cats 5684 0: <a href="abcd xyz pqr" 5685 1: " 5686 2: abcd xyz pqr 5687 <a href=\'abcd xyz pqr\' cats 5688 0: <a href='abcd xyz pqr' 5689 1: ' 5690 2: abcd xyz pqr 5691 5692 /<a\s+href\s*=\s* # find <a href= 5693 (["'])? # find single or double quote 5694 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 5695 # quote, otherwise match up to next space 5696 /isx 5697 <a href=abcd xyz 5698 0: <a href=abcd 5699 1: <unset> 5700 2: <unset> 5701 3: abcd 5702 <a href=\"abcd xyz pqr\" cats 5703 0: <a href="abcd xyz pqr" 5704 1: " 5705 2: abcd xyz pqr 5706 <a href = \'abcd xyz pqr\' cats 5707 0: <a href = 'abcd xyz pqr' 5708 1: ' 5709 2: abcd xyz pqr 5710 5711 /<a\s+href(?>\s*)=(?>\s*) # find <a href= 5712 (["'])? # find single or double quote 5713 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 5714 # quote, otherwise match up to next space 5715 /isx 5716 <a href=abcd xyz 5717 0: <a href=abcd 5718 1: <unset> 5719 2: <unset> 5720 3: abcd 5721 <a href=\"abcd xyz pqr\" cats 5722 0: <a href="abcd xyz pqr" 5723 1: " 5724 2: abcd xyz pqr 5725 <a href = \'abcd xyz pqr\' cats 5726 0: <a href = 'abcd xyz pqr' 5727 1: ' 5728 2: abcd xyz pqr 5729 5730 /((Z)+|A)*/ 5731 ZABCDEFG 5732 0: ZA 5733 1: A 5734 2: Z 5735 5736 /(Z()|A)*/ 5737 ZABCDEFG 5738 0: ZA 5739 1: A 5740 2: 5741 5742 /(Z(())|A)*/ 5743 ZABCDEFG 5744 0: ZA 5745 1: A 5746 2: 5747 3: 5748 5749 /((?>Z)+|A)*/ 5750 ZABCDEFG 5751 0: ZA 5752 1: A 5753 5754 /((?>)+|A)*/ 5755 ZABCDEFG 5756 0: 5757 1: 5758 5759 /a*/g 5760 abbab 5761 0: a 5762 0: 5763 0: 5764 0: a 5765 0: 5766 0: 5767 5768 /^[\d-a]/ 5769 abcde 5770 0: a 5771 -things 5772 0: - 5773 0digit 5774 0: 0 5775 \= Expect no match 5776 bcdef 5777 No match 5778 5779 /[[:space:]]+/ 5780 > \x09\x0a\x0c\x0d\x0b< 5781 0: \x09\x0a\x0c\x0d\x0b 5782 5783 /[[:blank:]]+/ 5784 > \x09\x0a\x0c\x0d\x0b< 5785 0: \x09 5786 5787 /[\s]+/ 5788 > \x09\x0a\x0c\x0d\x0b< 5789 0: \x09\x0a\x0c\x0d\x0b 5790 5791 /\s+/ 5792 > \x09\x0a\x0c\x0d\x0b< 5793 0: \x09\x0a\x0c\x0d\x0b 5794 5795 /ab/x 5797 ab 5798 0: ab 5799 5800 /(?!\A)x/m 5801 a\nxb\n 5802 0: x 5803 5804 /(?!^)x/m 5805 \= Expect no match 5806 a\nxb\n 5807 No match 5808 5809 /abc\Qabc\Eabc/ 5810 abcabcabc 5811 0: abcabcabc 5812 5813 /abc\Q(*+|\Eabc/ 5814 abc(*+|abc 5815 0: abc(*+|abc 5816 5817 / abc\Q abc\Eabc/x 5818 abc abcabc 5819 0: abc abcabc 5820 \= Expect no match 5821 abcabcabc 5822 No match 5823 5824 /abc#comment 5825 \Q#not comment 5826 literal\E/x 5827 abc#not comment\n literal 5828 0: abc#not comment\x0a literal 5829 5830 /abc#comment 5831 \Q#not comment 5832 literal/x 5833 abc#not comment\n literal 5834 0: abc#not comment\x0a literal 5835 5836 /abc#comment 5837 \Q#not comment 5838 literal\E #more comment 5839 /x 5840 abc#not comment\n literal 5841 0: abc#not comment\x0a literal 5842 5843 /abc#comment 5844 \Q#not comment 5845 literal\E #more comment/x 5846 abc#not comment\n literal 5847 0: abc#not comment\x0a literal 5848 5849 /\Qabc\$xyz\E/ 5850 abc\\\$xyz 5851 0: abc\$xyz 5852 5853 /\Qabc\E\$\Qxyz\E/ 5854 abc\$xyz 5855 0: abc$xyz 5856 5857 /\Gabc/ 5858 abc 5859 0: abc 5860 \= Expect no match 5861 xyzabc 5862 No match 5863 5864 /\Gabc./g 5865 abc1abc2xyzabc3 5866 0: abc1 5867 0: abc2 5868 5869 /abc./g 5870 abc1abc2xyzabc3 5871 0: abc1 5872 0: abc2 5873 0: abc3 5874 5875 /a(?x: b c )d/ 5876 XabcdY 5877 0: abcd 5878 \= Expect no match 5879 Xa b c d Y 5880 No match 5881 5882 /((?x)x y z | a b c)/ 5883 XabcY 5884 0: abc 5885 1: abc 5886 AxyzB 5887 0: xyz 5888 1: xyz 5889 5890 /(?i)AB(?-i)C/ 5891 XabCY 5892 0: abC 5893 \= Expect no match 5894 XabcY 5895 No match 5896 5897 /((?i)AB(?-i)C|D)E/ 5898 abCE 5899 0: abCE 5900 1: abC 5901 DE 5902 0: DE 5903 1: D 5904 \= Expect no match 5905 abcE 5906 No match 5907 abCe 5908 No match 5909 dE 5910 No match 5911 De 5912 No match 5913 5914 /(.*)\d+\1/ 5915 abc123abc 5916 0: abc123abc 5917 1: abc 5918 abc123bc 5919 0: bc123bc 5920 1: bc 5921 5922 /(.*)\d+\1/s 5923 abc123abc 5924 0: abc123abc 5925 1: abc 5926 abc123bc 5927 0: bc123bc 5928 1: bc 5929 5930 /((.*))\d+\1/ 5931 abc123abc 5932 0: abc123abc 5933 1: abc 5934 2: abc 5935 abc123bc 5936 0: bc123bc 5937 1: bc 5938 2: bc 5939 5940 # This tests for an IPv6 address in the form where it can have up to 5941 # eight components, one and only one of which is empty. This must be 5942 # an internal component. 5943 5944 /^(?!:) # colon disallowed at start 5945 (?: # start of item 5946 (?: [0-9a-f]{1,4} | # 1-4 hex digits or 5947 (?(1)0 | () ) ) # if null previously matched, fail; else null 5948 : # followed by colon 5949 ){1,7} # end item; 1-7 of them required 5950 [0-9a-f]{1,4} $ # final hex number at end of string 5951 (?(1)|.) # check that there was an empty component 5952 /ix 5953 a123::a123 5954 0: a123::a123 5955 1: 5956 a123:b342::abcd 5957 0: a123:b342::abcd 5958 1: 5959 a123:b342::324e:abcd 5960 0: a123:b342::324e:abcd 5961 1: 5962 a123:ddde:b342::324e:abcd 5963 0: a123:ddde:b342::324e:abcd 5964 1: 5965 a123:ddde:b342::324e:dcba:abcd 5966 0: a123:ddde:b342::324e:dcba:abcd 5967 1: 5968 a123:ddde:9999:b342::324e:dcba:abcd 5969 0: a123:ddde:9999:b342::324e:dcba:abcd 5970 1: 5971 \= Expect no match 5972 1:2:3:4:5:6:7:8 5973 No match 5974 a123:bce:ddde:9999:b342::324e:dcba:abcd 5975 No match 5976 a123::9999:b342::324e:dcba:abcd 5977 No match 5978 abcde:2:3:4:5:6:7:8 5979 No match 5980 ::1 5981 No match 5982 abcd:fee0:123:: 5983 No match 5984 :1 5985 No match 5986 1: 5987 No match 5988 5989 /[z\Qa-d]\E]/ 5990 z 5991 0: z 5992 a 5993 0: a 5994 - 5995 0: - 5996 d 5997 0: d 5998 ] 5999 0: ] 6000 \= Expect no match 6001 b 6002 No match 6003 6004 /(a+)*b/ 6005 \= Expect no match 6006 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6007 No match 6008 6009 /(?i)reg(?:ul(?:[a]|ae)r|ex)/ 6010 REGular 6011 0: REGular 6012 regulaer 6013 0: regulaer 6014 Regex 6015 0: Regex 6016 regulr 6017 0: regul\xe4r 6018 6019 /[--]+/ 6020 6021 0: \xc5\xe6\xe5\xe4\xe0 6022 6023 0: \xc5\xe6\xe5\xe4\xff 6024 6025 0: \xc5\xe6\xe5\xe4\xc0 6026 6027 0: \xc5\xe6\xe5\xe4\xdf 6028 6029 /(?<=Z)X./ 6030 \x84XAZXB 6031 0: XB 6032 6033 /ab cd (?x) de fg/ 6034 ab cd defg 6035 0: ab cd defg 6036 6037 /ab cd(?x) de fg/ 6038 ab cddefg 6039 0: ab cddefg 6040 \= Expect no match 6041 abcddefg 6042 No match 6043 6044 /(?<![^f]oo)(bar)/ 6045 foobarX 6046 0: bar 6047 1: bar 6048 \= Expect no match 6049 boobarX 6050 No match 6051 6052 /(?<![^f])X/ 6053 offX 6054 0: X 6055 \= Expect no match 6056 onyX 6057 No match 6058 6059 /(?<=[^f])X/ 6060 onyX 6061 0: X 6062 \= Expect no match 6063 offX 6064 No match 6065 6066 /^/gm 6067 a\nb\nc\n 6068 0: 6069 0: 6070 0: 6071 \ 6072 0: 6073 6074 /(?<=C\n)^/gm 6075 A\nC\nC\n 6076 0: 6077 6078 /(?:(?(1)a|b)(X))+/ 6079 bXaX 6080 0: bXaX 6081 1: X 6082 6083 /(?:(?(1)\1a|b)(X|Y))+/ 6084 bXXaYYaY 6085 0: bXXaYYaY 6086 1: Y 6087 bXYaXXaX 6088 0: bX 6089 1: X 6090 6091 /()()()()()()()()()(?:(?(10)\10a|b)(X|Y))+/ 6092 bXXaYYaY 6093 0: bX 6094 1: 6095 2: 6096 3: 6097 4: 6098 5: 6099 6: 6100 7: 6101 8: 6102 9: 6103 10: X 6104 6105 /[[,abc,]+]/ 6106 abc] 6107 0: abc] 6108 a,b] 6109 0: a,b] 6110 [a,b,c] 6111 0: [a,b,c] 6112 6113 /(?-x: )/x 6114 A\x20B 6115 0: 6116 6117 "(?x)(?-x: \s*#\s*)" 6118 A # B 6119 0: # 6120 \= Expect no match 6121 # 6122 No match 6123 6124 "(?x-is)(?:(?-ixs) \s*#\s*) include" 6125 A #include 6126 0: #include 6127 \= Expect no match 6128 A#include 6129 No match 6130 A #Include 6131 No match 6132 6133 /a*b*\w/ 6134 aaabbbb 6135 0: aaabbbb 6136 aaaa 6137 0: aaaa 6138 a 6139 0: a 6140 6141 /a*b?\w/ 6142 aaabbbb 6143 0: aaabb 6144 aaaa 6145 0: aaaa 6146 a 6147 0: a 6148 6149 /a*b{0,4}\w/ 6150 aaabbbb 6151 0: aaabbbb 6152 aaaa 6153 0: aaaa 6154 a 6155 0: a 6156 6157 /a*b{0,}\w/ 6158 aaabbbb 6159 0: aaabbbb 6160 aaaa 6161 0: aaaa 6162 a 6163 0: a 6164 6165 /a*\d*\w/ 6166 0a 6167 0: 0a 6168 a 6169 0: a 6170 6171 /a*b *\w/x 6172 a 6173 0: a 6174 6175 /a*b#comment 6176 *\w/x 6177 a 6178 0: a 6179 6180 /a* b *\w/x 6181 a 6182 0: a 6183 6184 /^\w+=.*(\\\n.*)*/ 6185 abc=xyz\\\npqr 6186 0: abc=xyz\ 6187 6188 /(?=(\w+))\1:/ 6189 abcd: 6190 0: abcd: 6191 1: abcd 6192 6193 /^(?=(\w+))\1:/ 6194 abcd: 6195 0: abcd: 6196 1: abcd 6197 6198 /^\Eabc/ 6199 abc 6200 0: abc 6201 6202 /^[\Eabc]/ 6203 a 6204 0: a 6205 \= Expect no match 6206 E 6207 No match 6208 6209 /^[a-\Ec]/ 6210 b 6211 0: b 6212 \= Expect no match 6213 - 6214 No match 6215 E 6216 No match 6217 6218 /^[a\E\E-\Ec]/ 6219 b 6220 0: b 6221 \= Expect no match 6222 - 6223 No match 6224 E 6225 No match 6226 6227 /^[\E\Qa\E-\Qz\E]+/ 6228 b 6229 0: b 6230 \= Expect no match 6231 - 6232 No match 6233 6234 /^[a\Q]bc\E]/ 6235 a 6236 0: a 6237 ] 6238 0: ] 6239 c 6240 0: c 6241 6242 /^[a-\Q\E]/ 6243 a 6244 0: a 6245 - 6246 0: - 6247 6248 /^(a()*)*/ 6249 aaaa 6250 0: aaaa 6251 1: a 6252 2: 6253 6254 /^(?:a(?:(?:))*)*/ 6255 aaaa 6256 0: aaaa 6257 6258 /^(a()+)+/ 6259 aaaa 6260 0: aaaa 6261 1: a 6262 2: 6263 6264 /^(?:a(?:(?:))+)+/ 6265 aaaa 6266 0: aaaa 6267 6268 /(a){0,3}(?(1)b|(c|))*D/ 6269 abbD 6270 0: abbD 6271 1: a 6272 ccccD 6273 0: ccccD 6274 1: <unset> 6275 2: 6276 D 6277 0: D 6278 1: <unset> 6279 2: 6280 6281 /(a|)*\d/ 6282 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6283 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6284 1: 6285 \= Expect no match 6286 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6287 No match 6288 6289 /(?>a|)*\d/ 6290 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6291 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6292 \= Expect no match 6293 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6294 No match 6295 6296 /(?:a|)*\d/ 6297 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6298 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6299 \= Expect no match 6300 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6301 No match 6302 6303 /\Z/g 6304 abc\n 6305 0: 6306 0: 6307 6308 /^(?s)(?>.*)(?<!\n)/ 6309 abc 6310 0: abc 6311 \= Expect no match 6312 abc\n 6313 No match 6314 6315 /^(?![^\n]*\n\z)/ 6316 abc 6317 0: 6318 \= Expect no match 6319 abc\n 6320 No match 6321 6322 /\z(?<!\n)/ 6323 abc 6324 0: 6325 \= Expect no match 6326 abc\n 6327 No match 6328 6329 /(.*(.)?)*/ 6330 abcd 6331 0: abcd 6332 1: 6333 6334 /( (A | (?(1)0|) )* )/x 6335 abcd 6336 0: 6337 1: 6338 2: 6339 6340 /( ( (?(1)0|) )* )/x 6341 abcd 6342 0: 6343 1: 6344 2: 6345 6346 /( (?(1)0|)* )/x 6347 abcd 6348 0: 6349 1: 6350 6351 /[[:abcd:xyz]]/ 6352 a] 6353 0: a] 6354 :] 6355 0: :] 6356 6357 /[abc[:x\]pqr]/ 6358 a 6359 0: a 6360 [ 6361 0: [ 6362 : 6363 0: : 6364 ] 6365 0: ] 6366 p 6367 0: p 6368 6369 /.*[op][xyz]/ 6370 \= Expect no match 6371 fooabcfoo 6372 No match 6373 6374 /(?(?=.*b)b|^)/ 6375 adc 6376 0: 6377 abc 6378 0: b 6379 6380 /(?(?=^.*b)b|^)/ 6381 adc 6382 0: 6383 \= Expect no match 6384 abc 6385 No match 6386 6387 /(?(?=.*b)b|^)*/ 6388 adc 6389 0: 6390 abc 6391 0: 6392 6393 /(?(?=.*b)b|^)+/ 6394 adc 6395 0: 6396 abc 6397 0: b 6398 6399 /(?(?=b).*b|^d)/ 6400 abc 6401 0: b 6402 6403 /(?(?=.*b).*b|^d)/ 6404 abc 6405 0: ab 6406 6407 /^%((?(?=[a])[^%])|b)*%$/ 6408 %ab% 6409 0: %ab% 6410 1: 6411 6412 /(?i)a(?-i)b|c/ 6413 XabX 6414 0: ab 6415 XAbX 6416 0: Ab 6417 CcC 6418 0: c 6419 \= Expect no match 6420 XABX 6421 No match 6422 6423 /[\x00-\xff\s]+/ 6424 \x0a\x0b\x0c\x0d 6425 0: \x0a\x0b\x0c\x0d 6426 6427 /(abc)\1/i 6428 \= Expect no match 6429 abc 6430 No match 6431 6432 /(abc)\1/ 6433 \= Expect no match 6434 abc 6435 No match 6436 6437 /[^a]*/i 6438 12abc 6439 0: 12 6440 12ABC 6441 0: 12 6442 6443 /[^a]*+/i 6444 12abc 6445 0: 12 6446 12ABC 6447 0: 12 6448 6449 /[^a]*?X/i 6450 \= Expect no match 6451 12abc 6452 No match 6453 12ABC 6454 No match 6455 6456 /[^a]+?X/i 6457 \= Expect no match 6458 12abc 6459 No match 6460 12ABC 6461 No match 6462 6463 /[^a]?X/i 6464 12aXbcX 6465 0: X 6466 12AXBCX 6467 0: X 6468 BCX 6469 0: CX 6470 6471 /[^a]??X/i 6472 12aXbcX 6473 0: X 6474 12AXBCX 6475 0: X 6476 BCX 6477 0: CX 6478 6479 /[^a]?+X/i 6480 12aXbcX 6481 0: cX 6482 12AXBCX 6483 0: CX 6484 BCX 6485 0: CX 6486 6487 /[^a]{2,3}/i 6488 abcdef 6489 0: bcd 6490 ABCDEF 6491 0: BCD 6492 6493 /[^a]{2,3}?/i 6494 abcdef 6495 0: bc 6496 ABCDEF 6497 0: BC 6498 6499 /[^a]{2,3}+/i 6500 abcdef 6501 0: bcd 6502 ABCDEF 6503 0: BCD 6504 6505 /((a|)+)+Z/ 6506 Z 6507 0: Z 6508 1: 6509 2: 6510 6511 /(a)b|(a)c/ 6512 ac 6513 0: ac 6514 1: <unset> 6515 2: a 6516 6517 /(?>(a))b|(a)c/ 6518 ac 6519 0: ac 6520 1: <unset> 6521 2: a 6522 6523 /(?=(a))ab|(a)c/ 6524 ac 6525 0: ac 6526 1: <unset> 6527 2: a 6528 6529 /((?>(a))b|(a)c)/ 6530 ac 6531 0: ac 6532 1: ac 6533 2: <unset> 6534 3: a 6535 6536 /((?>(a))b|(a)c)++/ 6537 ac 6538 0: ac 6539 1: ac 6540 2: <unset> 6541 3: a 6542 6543 /(?:(?>(a))b|(a)c)++/ 6544 ac 6545 0: ac 6546 1: <unset> 6547 2: a 6548 6549 /(?=(?>(a))b|(a)c)(..)/ 6550 ac 6551 0: ac 6552 1: <unset> 6553 2: a 6554 3: ac 6555 6556 /(?>(?>(a))b|(a)c)/ 6557 ac 6558 0: ac 6559 1: <unset> 6560 2: a 6561 6562 /(?:(?>([ab])))+a=/aftertext 6563 =ba= 6564 0: ba= 6565 0+ 6566 1: b 6567 6568 /(?>([ab]))+a=/aftertext 6569 =ba= 6570 0: ba= 6571 0+ 6572 1: b 6573 6574 /((?>(a+)b)+(aabab))/ 6575 aaaabaaabaabab 6576 0: aaaabaaabaabab 6577 1: aaaabaaabaabab 6578 2: aaa 6579 3: aabab 6580 6581 /(?>a+|ab)+?c/ 6582 \= Expect no match 6583 aabc 6584 No match 6585 6586 /(?>a+|ab)+c/ 6587 \= Expect no match 6588 aabc 6589 No match 6590 6591 /(?:a+|ab)+c/ 6592 aabc 6593 0: aabc 6594 6595 /(?(?=(a))a)/ 6596 a 6597 0: a 6598 1: a 6599 6600 /(?(?=(a))a)(b)/ 6601 ab 6602 0: ab 6603 1: a 6604 2: b 6605 6606 /^(?:a|ab)++c/ 6607 \= Expect no match 6608 aaaabc 6609 No match 6610 6611 /^(?>a|ab)++c/ 6612 \= Expect no match 6613 aaaabc 6614 No match 6615 6616 /^(?:a|ab)+c/ 6617 aaaabc 6618 0: aaaabc 6619 6620 /(?=abc){3}abc/aftertext 6621 abcabcabc 6622 0: abc 6623 0+ abcabc 6624 \= Expect no match 6625 xyz 6626 No match 6627 6628 /(?=abc)+abc/aftertext 6629 abcabcabc 6630 0: abc 6631 0+ abcabc 6632 \= Expect no match 6633 xyz 6634 No match 6635 6636 /(?=abc)++abc/aftertext 6637 abcabcabc 6638 0: abc 6639 0+ abcabc 6640 \= Expect no match 6641 xyz 6642 No match 6643 6644 /(?=abc){0}xyz/ 6645 xyz 6646 0: xyz 6647 6648 /(?=abc){1}xyz/ 6649 \= Expect no match 6650 xyz 6651 No match 6652 6653 /(?=(a))?./ 6654 ab 6655 0: a 6656 1: a 6657 bc 6658 0: b 6659 6660 /(?=(a))??./ 6661 ab 6662 0: a 6663 bc 6664 0: b 6665 6666 /^(?=(?1))?[az]([abc])d/ 6667 abd 6668 0: abd 6669 1: b 6670 zcdxx 6671 0: zcd 6672 1: c 6673 6674 /^(?!a){0}\w+/ 6675 aaaaa 6676 0: aaaaa 6677 6678 /(?<=(abc))?xyz/ 6679 abcxyz 6680 0: xyz 6681 1: abc 6682 pqrxyz 6683 0: xyz 6684 6685 /^[\g<a>]+/ 6686 ggg<<<aaa>>> 6687 0: ggg<<<aaa>>> 6688 \= Expect no match 6689 \\ga 6690 No match 6691 6692 /^[\ga]+/ 6693 gggagagaxyz 6694 0: gggagaga 6695 6696 /^[:a[:digit:]]+/ 6697 aaaa444:::Z 6698 0: aaaa444::: 6699 6700 /^[:a[:digit:]:b]+/ 6701 aaaa444:::bbbZ 6702 0: aaaa444:::bbb 6703 6704 /[:a]xxx[b:]/ 6705 :xxx: 6706 0: :xxx: 6707 6708 /(?<=a{2})b/i 6709 xaabc 6710 0: b 6711 \= Expect no match 6712 xabc 6713 No match 6714 6715 /(?<!a{2})b/i 6716 xabc 6717 0: b 6718 \= Expect no match 6719 xaabc 6720 No match 6721 6722 /(?<=a\h)c/ 6723 xa c 6724 0: c 6725 6726 /(?<=[^a]{2})b/ 6727 axxbc 6728 0: b 6729 aAAbc 6730 0: b 6731 \= Expect no match 6732 xaabc 6733 No match 6734 6735 /(?<=[^a]{2})b/i 6736 axxbc 6737 0: b 6738 \= Expect no match 6739 aAAbc 6740 No match 6741 xaabc 6742 No match 6743 6744 /(?<=a\H)c/ 6745 abc 6746 0: c 6747 6748 /(?<=a\V)c/ 6749 abc 6750 0: c 6751 6752 /(?<=a\v)c/ 6753 a\nc 6754 0: c 6755 6756 /(?(?=c)c|d)++Y/ 6757 XcccddYX 6758 0: cccddY 6759 6760 /(?(?=c)c|d)*+Y/ 6761 XcccddYX 6762 0: cccddY 6763 6764 /^(a{2,3}){2,}+a/ 6765 aaaaaaa 6766 0: aaaaaaa 6767 1: aaa 6768 \= Expect no match 6769 aaaaaa 6770 No match 6771 aaaaaaaaa 6772 No match 6773 6774 /^(a{2,3})++a/ 6775 \= Expect no match 6776 aaaaaa 6777 No match 6778 6779 /^(a{2,3})*+a/ 6780 \= Expect no match 6781 aaaaaa 6782 No match 6783 6784 /\H\h\V\v/ 6785 X X\x0a 6786 0: X X\x0a 6787 X\x09X\x0b 6788 0: X\x09X\x0b 6789 \= Expect no match 6790 \xa0 X\x0a 6791 No match 6792 6793 /\H*\h+\V?\v{3,4}/ 6794 \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a 6795 0: \x09 \xa0X\x0a\x0b\x0c\x0d 6796 \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a 6797 0: \x09 \xa0\x0a\x0b\x0c\x0d 6798 \x09\x20\xa0\x0a\x0b\x0c 6799 0: \x09 \xa0\x0a\x0b\x0c 6800 \= Expect no match 6801 \x09\x20\xa0\x0a\x0b 6802 No match 6803 6804 /\H{3,4}/ 6805 XY ABCDE 6806 0: ABCD 6807 XY PQR ST 6808 0: PQR 6809 6810 /.\h{3,4}./ 6811 XY AB PQRS 6812 0: B P 6813 6814 /\h*X\h?\H+Y\H?Z/ 6815 >XNNNYZ 6816 0: XNNNYZ 6817 > X NYQZ 6818 0: X NYQZ 6819 \= Expect no match 6820 >XYZ 6821 No match 6822 > X NY Z 6823 No match 6824 6825 /\v*X\v?Y\v+Z\V*\x0a\V+\x0b\V{2,3}\x0c/ 6826 >XY\x0aZ\x0aA\x0bNN\x0c 6827 0: XY\x0aZ\x0aA\x0bNN\x0c 6828 >\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c 6829 0: \x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c 6830 6831 /(foo)\Kbar/ 6832 foobar 6833 0: bar 6834 1: foo 6835 6836 /(foo)(\Kbar|baz)/ 6837 foobar 6838 0: bar 6839 1: foo 6840 2: bar 6841 foobaz 6842 0: foobaz 6843 1: foo 6844 2: baz 6845 6846 /(foo\Kbar)baz/ 6847 foobarbaz 6848 0: barbaz 6849 1: foobar 6850 6851 /abc\K|def\K/g,aftertext 6852 Xabcdefghi 6853 0: 6854 0+ defghi 6855 0: 6856 0+ ghi 6857 6858 /ab\Kc|de\Kf/g,aftertext 6859 Xabcdefghi 6860 0: c 6861 0+ defghi 6862 0: f 6863 0+ ghi 6864 6865 /(?=C)/g,aftertext 6866 ABCDECBA 6867 0: 6868 0+ CDECBA 6869 0: 6870 0+ CBA 6871 6872 /^abc\K/aftertext 6873 abcdef 6874 0: 6875 0+ def 6876 \= Expect no match 6877 defabcxyz 6878 No match 6879 6880 /^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-2}Z/ 6881 ababababbbabZXXXX 6882 0: ababababbbabZ 6883 1: ab 6884 2: b 6885 6886 /(?<A>tom|bon)-\g{A}/ 6887 tom-tom 6888 0: tom-tom 6889 1: tom 6890 bon-bon 6891 0: bon-bon 6892 1: bon 6893 6894 /(^(a|b\g{-1}))/ 6895 \= Expect no match 6896 bacxxx 6897 No match 6898 6899 /(?|(abc)|(xyz))\1/ 6900 abcabc 6901 0: abcabc 6902 1: abc 6903 xyzxyz 6904 0: xyzxyz 6905 1: xyz 6906 \= Expect no match 6907 abcxyz 6908 No match 6909 xyzabc 6910 No match 6911 6912 /(?|(abc)|(xyz))(?1)/ 6913 abcabc 6914 0: abcabc 6915 1: abc 6916 xyzabc 6917 0: xyzabc 6918 1: xyz 6919 \= Expect no match 6920 xyzxyz 6921 No match 6922 6923 /^X(?5)(a)(?|(b)|(q))(c)(d)(Y)/ 6924 XYabcdY 6925 0: XYabcdY 6926 1: a 6927 2: b 6928 3: c 6929 4: d 6930 5: Y 6931 6932 /^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)/ 6933 XYabcdY 6934 0: XYabcdY 6935 1: a 6936 2: b 6937 3: <unset> 6938 4: <unset> 6939 5: c 6940 6: d 6941 7: Y 6942 6943 /^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)/ 6944 XYabcdY 6945 0: XYabcdY 6946 1: a 6947 2: b 6948 3: <unset> 6949 4: <unset> 6950 5: c 6951 6: d 6952 7: Y 6953 6954 /(?'abc'\w+):\k<abc>{2}/ 6955 a:aaxyz 6956 0: a:aa 6957 1: a 6958 ab:ababxyz 6959 0: ab:abab 6960 1: ab 6961 \= Expect no match 6962 a:axyz 6963 No match 6964 ab:abxyz 6965 No match 6966 6967 /(?'abc'\w+):\g{abc}{2}/ 6968 a:aaxyz 6969 0: a:aa 6970 1: a 6971 ab:ababxyz 6972 0: ab:abab 6973 1: ab 6974 \= Expect no match 6975 a:axyz 6976 No match 6977 ab:abxyz 6978 No match 6979 6980 /^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x 6981 abd 6982 0: abd 6983 1: a 6984 ce 6985 0: ce 6986 6987 /^(a.)\g-1Z/ 6988 aXaXZ 6989 0: aXaXZ 6990 1: aX 6991 6992 /^(a.)\g{-1}Z/ 6993 aXaXZ 6994 0: aXaXZ 6995 1: aX 6996 6997 /^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) /x 6998 abcd 6999 0: ab 7000 7001 /(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT)) 7002 (?(DEFINE) 7003 (?<NAME_PAT>[a-z]+) 7004 (?<ADDRESS_PAT>\d+) 7005 )/x 7006 metcalfe 33 7007 0: metcalfe 33 7008 1: metcalfe 7009 2: 33 7010 7011 /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/ 7012 1.2.3.4 7013 0: 1.2.3.4 7014 1: <unset> 7015 2: .4 7016 131.111.10.206 7017 0: 131.111.10.206 7018 1: <unset> 7019 2: .206 7020 10.0.0.0 7021 0: 10.0.0.0 7022 1: <unset> 7023 2: .0 7024 \= Expect no match 7025 10.6 7026 No match 7027 455.3.4.5 7028 No match 7029 7030 /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/ 7031 1.2.3.4 7032 0: 1.2.3.4 7033 1: .4 7034 131.111.10.206 7035 0: 131.111.10.206 7036 1: .206 7037 10.0.0.0 7038 0: 10.0.0.0 7039 1: .0 7040 \= Expect no match 7041 10.6 7042 No match 7043 455.3.4.5 7044 No match 7045 7046 /^(\w++|\s++)*$/ 7047 now is the time for all good men to come to the aid of the party 7048 0: now is the time for all good men to come to the aid of the party 7049 1: party 7050 \= Expect no match 7051 this is not a line with only words and spaces! 7052 No match 7053 7054 /(\d++)(\w)/ 7055 12345a 7056 0: 12345a 7057 1: 12345 7058 2: a 7059 \= Expect no match 7060 12345+ 7061 No match 7062 7063 /a++b/ 7064 aaab 7065 0: aaab 7066 7067 /(a++b)/ 7068 aaab 7069 0: aaab 7070 1: aaab 7071 7072 /(a++)b/ 7073 aaab 7074 0: aaab 7075 1: aaa 7076 7077 /([^()]++|\([^()]*\))+/ 7078 ((abc(ade)ufh()()x 7079 0: abc(ade)ufh()()x 7080 1: x 7081 7082 /\(([^()]++|\([^()]+\))+\)/ 7083 (abc) 7084 0: (abc) 7085 1: abc 7086 (abc(def)xyz) 7087 0: (abc(def)xyz) 7088 1: xyz 7089 \= Expect no match 7090 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 7091 No match 7092 7093 /^([^()]|\((?1)*\))*$/ 7094 abc 7095 0: abc 7096 1: c 7097 a(b)c 7098 0: a(b)c 7099 1: c 7100 a(b(c))d 7101 0: a(b(c))d 7102 1: d 7103 \= Expect no match) 7104 a(b(c)d 7105 No match 7106 7107 /^>abc>([^()]|\((?1)*\))*<xyz<$/ 7108 >abc>123<xyz< 7109 0: >abc>123<xyz< 7110 1: 3 7111 >abc>1(2)3<xyz< 7112 0: >abc>1(2)3<xyz< 7113 1: 3 7114 >abc>(1(2)3)<xyz< 7115 0: >abc>(1(2)3)<xyz< 7116 1: (1(2)3) 7117 7118 /^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i 7119 1221 7120 0: 1221 7121 1: 1221 7122 2: 1 7123 Satanoscillatemymetallicsonatas 7124 0: Satanoscillatemymetallicsonatas 7125 1: <unset> 7126 2: <unset> 7127 3: Satanoscillatemymetallicsonatas 7128 4: S 7129 AmanaplanacanalPanama 7130 0: AmanaplanacanalPanama 7131 1: <unset> 7132 2: <unset> 7133 3: AmanaplanacanalPanama 7134 4: A 7135 AblewasIereIsawElba 7136 0: AblewasIereIsawElba 7137 1: <unset> 7138 2: <unset> 7139 3: AblewasIereIsawElba 7140 4: A 7141 \= Expect no match 7142 Thequickbrownfox 7143 No match 7144 7145 /^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/ 7146 12 7147 0: 12 7148 1: 12 7149 (((2+2)*-3)-7) 7150 0: (((2+2)*-3)-7) 7151 1: (((2+2)*-3)-7) 7152 2: - 7153 -12 7154 0: -12 7155 1: -12 7156 \= Expect no match 7157 ((2+2)*-3)-7) 7158 No match 7159 7160 /^(x(y|(?1){2})z)/ 7161 xyz 7162 0: xyz 7163 1: xyz 7164 2: y 7165 xxyzxyzz 7166 0: xxyzxyzz 7167 1: xxyzxyzz 7168 2: xyzxyz 7169 \= Expect no match 7170 xxyzz 7171 No match 7172 xxyzxyzxyzz 7173 No match 7174 7175 /((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/x 7176 <> 7177 0: <> 7178 1: <> 7179 2: <> 7180 <abcd> 7181 0: <abcd> 7182 1: <abcd> 7183 2: <abcd> 7184 <abc <123> hij> 7185 0: <abc <123> hij> 7186 1: <abc <123> hij> 7187 2: <abc <123> hij> 7188 <abc <def> hij> 7189 0: <def> 7190 1: <def> 7191 2: <def> 7192 <abc<>def> 7193 0: <abc<>def> 7194 1: <abc<>def> 7195 2: <abc<>def> 7196 <abc<> 7197 0: <> 7198 1: <> 7199 2: <> 7200 \= Expect no match 7201 <abc 7202 No match 7203 7204 /^a+(*FAIL)/ 7205 \= Expect no match 7206 aaaaaa 7207 No match 7208 7209 /a+b?c+(*FAIL)/ 7210 \= Expect no match 7211 aaabccc 7212 No match 7213 7214 /a+b?(*PRUNE)c+(*FAIL)/ 7215 \= Expect no match 7216 aaabccc 7217 No match 7218 7219 /a+b?(*COMMIT)c+(*FAIL)/ 7220 \= Expect no match 7221 aaabccc 7222 No match 7223 7224 /a+b?(*SKIP)c+(*FAIL)/ 7225 \= Expect no match 7226 aaabcccaaabccc 7227 No match 7228 7229 /^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 7230 aaaxxxxxx 7231 0: aaaxxxxxx 7232 aaa++++++ 7233 0: aaa 7234 bbbxxxxx 7235 0: bbbxxxxx 7236 bbb+++++ 7237 0: bbb 7238 cccxxxx 7239 0: cccxxxx 7240 ccc++++ 7241 0: ccc 7242 dddddddd 7243 0: ddd 7244 7245 /^(aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 7246 aaaxxxxxx 7247 0: aaaxxxxxx 7248 1: aaaxxxxxx 7249 aaa++++++ 7250 0: aaa 7251 1: aaa 7252 bbbxxxxx 7253 0: bbbxxxxx 7254 1: bbbxxxxx 7255 bbb+++++ 7256 0: bbb 7257 1: bbb 7258 cccxxxx 7259 0: cccxxxx 7260 1: cccxxxx 7261 ccc++++ 7262 0: ccc 7263 1: ccc 7264 dddddddd 7265 0: ddd 7266 1: ddd 7267 7268 /a+b?(*THEN)c+(*FAIL)/ 7269 \= Expect no match 7270 aaabccc 7271 No match 7272 7273 /(A (A|B(*ACCEPT)|C) D)(E)/x 7274 AB 7275 0: AB 7276 1: AB 7277 2: B 7278 ABX 7279 0: AB 7280 1: AB 7281 2: B 7282 AADE 7283 0: AADE 7284 1: AAD 7285 2: A 7286 3: E 7287 ACDE 7288 0: ACDE 7289 1: ACD 7290 2: C 7291 3: E 7292 \= Expect no match 7293 AD 7294 No match 7295 7296 /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i 7297 1221 7298 0: 1221 7299 1: 1221 7300 2: 1 7301 Satan, oscillate my metallic sonatas! 7302 0: Satan, oscillate my metallic sonatas! 7303 1: <unset> 7304 2: <unset> 7305 3: Satan, oscillate my metallic sonatas 7306 4: S 7307 A man, a plan, a canal: Panama! 7308 0: A man, a plan, a canal: Panama! 7309 1: <unset> 7310 2: <unset> 7311 3: A man, a plan, a canal: Panama 7312 4: A 7313 Able was I ere I saw Elba. 7314 0: Able was I ere I saw Elba. 7315 1: <unset> 7316 2: <unset> 7317 3: Able was I ere I saw Elba 7318 4: A 7319 \= Expect no match 7320 The quick brown fox 7321 No match 7322 7323 /^((.)(?1)\2|.)$/ 7324 a 7325 0: a 7326 1: a 7327 aba 7328 0: aba 7329 1: aba 7330 2: a 7331 aabaa 7332 0: aabaa 7333 1: aabaa 7334 2: a 7335 abcdcba 7336 0: abcdcba 7337 1: abcdcba 7338 2: a 7339 pqaabaaqp 7340 0: pqaabaaqp 7341 1: pqaabaaqp 7342 2: p 7343 ablewasiereisawelba 7344 0: ablewasiereisawelba 7345 1: ablewasiereisawelba 7346 2: a 7347 \= Expect no match 7348 rhubarb 7349 No match 7350 the quick brown fox 7351 No match 7352 7353 /(a)(?<=b(?1))/ 7354 baz 7355 0: a 7356 1: a 7357 \= Expect no match 7358 caz 7359 No match 7360 7361 /(?<=b(?1))(a)/ 7362 zbaaz 7363 0: a 7364 1: a 7365 \= Expect no match 7366 aaa 7367 No match 7368 7369 /(?<X>a)(?<=b(?&X))/ 7370 baz 7371 0: a 7372 1: a 7373 7374 /^(?|(abc)|(def))\1/ 7375 abcabc 7376 0: abcabc 7377 1: abc 7378 defdef 7379 0: defdef 7380 1: def 7381 \= Expect no match 7382 abcdef 7383 No match 7384 defabc 7385 No match 7386 7387 /^(?|(abc)|(def))(?1)/ 7388 abcabc 7389 0: abcabc 7390 1: abc 7391 defabc 7392 0: defabc 7393 1: def 7394 \= Expect no match 7395 defdef 7396 No match 7397 abcdef 7398 No match 7399 7400 /(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/x,dupnames 7401 a\"aaaaa 7402 0: a"aaaaa 7403 1: " 7404 2: <unset> 7405 3: " 7406 b\"aaaaa 7407 0: b"aaaaa 7408 1: <unset> 7409 2: <unset> 7410 3: <unset> 7411 4: " 7412 5: <unset> 7413 6: " 7414 \= Expect no match 7415 b\"11111 7416 No match 7417 7418 /(?:(?1)|B)(A(*F)|C)/ 7419 ABCD 7420 0: BC 7421 1: C 7422 CCD 7423 0: CC 7424 1: C 7425 \= Expect no match 7426 CAD 7427 No match 7428 7429 /^(?:(?1)|B)(A(*F)|C)/ 7430 CCD 7431 0: CC 7432 1: C 7433 BCD 7434 0: BC 7435 1: C 7436 \= Expect no match 7437 ABCD 7438 No match 7439 CAD 7440 No match 7441 BAD 7442 No match 7443 7444 /(?:(?1)|B)(A(*ACCEPT)XX|C)D/ 7445 AAD 7446 0: AA 7447 1: A 7448 ACD 7449 0: ACD 7450 1: C 7451 BAD 7452 0: BA 7453 1: A 7454 BCD 7455 0: BCD 7456 1: C 7457 BAX 7458 0: BA 7459 1: A 7460 \= Expect no match 7461 ACX 7462 No match 7463 ABC 7464 No match 7465 7466 /(?(DEFINE)(A))B(?1)C/ 7467 BAC 7468 0: BAC 7469 7470 /(?(DEFINE)((A)\2))B(?1)C/ 7471 BAAC 7472 0: BAAC 7473 7474 /(?<pn> \( ( [^()]++ | (?&pn) )* \) )/x 7475 (ab(cd)ef) 7476 0: (ab(cd)ef) 7477 1: (ab(cd)ef) 7478 2: ef 7479 7480 /^(?=a(*SKIP)b|ac)/ 7481 \= Expect no match 7482 ac 7483 No match 7484 7485 /^(?=a(*PRUNE)b)/ 7486 ab 7487 0: 7488 \= Expect no match 7489 ac 7490 No match 7491 7492 /^(?=a(*ACCEPT)b)/ 7493 ac 7494 0: 7495 7496 /(?>a\Kb)/ 7497 ab 7498 0: b 7499 7500 /((?>a\Kb))/ 7501 ab 7502 0: b 7503 1: ab 7504 7505 /(a\Kb)/ 7506 ab 7507 0: b 7508 1: ab 7509 7510 /^a\Kcz|ac/ 7511 ac 7512 0: ac 7513 7514 /(?>a\Kbz|ab)/ 7515 ab 7516 0: ab 7517 7518 /^(?&t)(?(DEFINE)(?<t>a\Kb))$/ 7519 ab 7520 0: b 7521 7522 /^([^()]|\((?1)*\))*$/ 7523 a(b)c 7524 0: a(b)c 7525 1: c 7526 a(b(c)d)e 7527 0: a(b(c)d)e 7528 1: e 7529 7530 /(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))/ 7531 0 7532 0: 0 7533 1: 0 7534 00 7535 0: 00 7536 1: 00 7537 2: 0 7538 0000 7539 0: 0000 7540 1: 0000 7541 2: 0 7542 7543 /(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))/ 7544 0 7545 0: 0 7546 1: 0 7547 2: 0 7548 00 7549 0: 0 7550 1: 0 7551 2: 0 7552 0000 7553 0: 0 7554 1: 0 7555 2: 0 7556 7557 # This one does fail, as expected, in Perl. It needs the complex item at the 7558 # end of the pattern. A single letter instead of (B|D) makes it not fail, which 7559 # I think is a Perl bug. 7560 7561 /A(*COMMIT)(B|D)/ 7562 \= Expect no match 7563 ACABX 7564 No match 7565 7566 # Check the use of names for failure 7567 7568 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark 7569 \= Expect no match 7570 AC 7571 No match, mark = A 7572 CB 7573 No match, mark = B 7574 7575 /(*MARK:A)(*SKIP:B)(C|X)/mark 7576 C 7577 0: C 7578 1: C 7579 MK: A 7580 \= Expect no match 7581 D 7582 No match, mark = A 7583 7584 /^(A(*THEN:A)B|C(*THEN:B)D)/mark 7585 \= Expect no match 7586 CB 7587 No match, mark = B 7588 7589 /^(?:A(*THEN:A)B|C(*THEN:B)D)/mark 7590 \= Expect no match 7591 CB 7592 No match, mark = B 7593 7594 /^(?>A(*THEN:A)B|C(*THEN:B)D)/mark 7595 \= Expect no match 7596 CB 7597 No match, mark = B 7598 7599 # This should succeed, as the skip causes bump to offset 1 (the mark). Note 7600 # that we have to have something complicated such as (B|Z) at the end because, 7601 # for Perl, a simple character somehow causes an unwanted optimization to mess 7602 # with the handling of backtracking verbs. 7603 7604 /A(*MARK:A)A+(*SKIP:A)(B|Z) | AC/x,mark 7605 AAAC 7606 0: AC 7607 7608 # Test skipping over a non-matching mark. 7609 7610 /A(*MARK:A)A+(*MARK:B)(*SKIP:A)(B|Z) | AC/x,mark 7611 AAAC 7612 0: AC 7613 7614 # Check shorthand for MARK. 7615 7616 /A(*:A)A+(*SKIP:A)(B|Z) | AC/x,mark 7617 AAAC 7618 0: AC 7619 7620 /(*:A)A+(*SKIP:A)(B|Z)/mark 7621 \= Expect no match 7622 AAAC 7623 No match, mark = A 7624 7625 # This should succeed, as a non-existent skip name disables the skip. 7626 7627 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark 7628 AAAC 7629 0: AC 7630 7631 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC(*:B)/x,mark 7632 AAAC 7633 0: AC 7634 MK: B 7635 7636 # COMMIT at the start of a pattern should act like an anchor. Again, however, 7637 # we need the complication for Perl. 7638 7639 /(*COMMIT)(A|P)(B|P)(C|P)/ 7640 ABCDEFG 7641 0: ABC 7642 1: A 7643 2: B 7644 3: C 7645 \= Expect no match 7646 DEFGABC 7647 No match 7648 7649 # COMMIT inside an atomic group can't stop backtracking over the group. 7650 7651 /(\w+)(?>b(*COMMIT))\w{2}/ 7652 abbb 7653 0: abbb 7654 1: a 7655 7656 /(\w+)b(*COMMIT)\w{2}/ 7657 \= Expect no match 7658 abbb 7659 No match 7660 7661 # Check opening parens in comment when seeking forward reference. 7662 7663 /(?&t)(?#()(?(DEFINE)(?<t>a))/ 7664 bac 7665 0: a 7666 7667 # COMMIT should override THEN. 7668 7669 /(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/ 7670 \= Expect no match 7671 yes 7672 No match 7673 7674 /(?>(*COMMIT)(yes|no)(*THEN)(*F))?/ 7675 \= Expect no match 7676 yes 7677 No match 7678 7679 /b?(*SKIP)c/ 7680 bc 7681 0: bc 7682 abc 7683 0: bc 7684 7685 /(*SKIP)bc/ 7686 \= Expect no match 7687 a 7688 No match 7689 7690 /(*SKIP)b/ 7691 \= Expect no match 7692 a 7693 No match 7694 7695 /(?P<abn>(?P=abn)xxx|)+/ 7696 xxx 7697 0: 7698 1: 7699 7700 /(?i:([^b]))(?1)/ 7701 aa 7702 0: aa 7703 1: a 7704 aA 7705 0: aA 7706 1: a 7707 \= Expect no match 7708 ab 7709 No match 7710 aB 7711 No match 7712 Ba 7713 No match 7714 ba 7715 No match 7716 7717 /^(?&t)*+(?(DEFINE)(?<t>a))\w$/ 7718 aaaaaaX 7719 0: aaaaaaX 7720 \= Expect no match 7721 aaaaaa 7722 No match 7723 7724 /^(?&t)*(?(DEFINE)(?<t>a))\w$/ 7725 aaaaaaX 7726 0: aaaaaaX 7727 aaaaaa 7728 0: aaaaaa 7729 7730 /^(a)*+(\w)/ 7731 aaaaX 7732 0: aaaaX 7733 1: a 7734 2: X 7735 YZ 7736 0: Y 7737 1: <unset> 7738 2: Y 7739 \= Expect no match 7740 aaaa 7741 No match 7742 7743 /^(?:a)*+(\w)/ 7744 aaaaX 7745 0: aaaaX 7746 1: X 7747 YZ 7748 0: Y 7749 1: Y 7750 \= Expect no match 7751 aaaa 7752 No match 7753 7754 /^(a)++(\w)/ 7755 aaaaX 7756 0: aaaaX 7757 1: a 7758 2: X 7759 \= Expect no match 7760 aaaa 7761 No match 7762 YZ 7763 No match 7764 7765 /^(?:a)++(\w)/ 7766 aaaaX 7767 0: aaaaX 7768 1: X 7769 \= Expect no match 7770 aaaa 7771 No match 7772 YZ 7773 No match 7774 7775 /^(a)?+(\w)/ 7776 aaaaX 7777 0: aa 7778 1: a 7779 2: a 7780 YZ 7781 0: Y 7782 1: <unset> 7783 2: Y 7784 7785 /^(?:a)?+(\w)/ 7786 aaaaX 7787 0: aa 7788 1: a 7789 YZ 7790 0: Y 7791 1: Y 7792 7793 /^(a){2,}+(\w)/ 7794 aaaaX 7795 0: aaaaX 7796 1: a 7797 2: X 7798 \= Expect no match 7799 aaa 7800 No match 7801 YZ 7802 No match 7803 7804 /^(?:a){2,}+(\w)/ 7805 aaaaX 7806 0: aaaaX 7807 1: X 7808 \= Expect no match 7809 aaa 7810 No match 7811 YZ 7812 No match 7813 7814 /(a|)*(?1)b/ 7815 b 7816 0: b 7817 1: 7818 ab 7819 0: ab 7820 1: 7821 aab 7822 0: aab 7823 1: 7824 7825 /(a)++(?1)b/ 7826 \= Expect no match 7827 ab 7828 No match 7829 aab 7830 No match 7831 7832 /(a)*+(?1)b/ 7833 \= Expect no match 7834 ab 7835 No match 7836 aab 7837 No match 7838 7839 /(?1)(?:(b)){0}/ 7840 b 7841 0: b 7842 7843 /(foo ( \( ((?:(?> [^()]+ )|(?2))*) \) ) )/x 7844 foo(bar(baz)+baz(bop)) 7845 0: foo(bar(baz)+baz(bop)) 7846 1: foo(bar(baz)+baz(bop)) 7847 2: (bar(baz)+baz(bop)) 7848 3: bar(baz)+baz(bop) 7849 7850 /(A (A|B(*ACCEPT)|C) D)(E)/x 7851 AB 7852 0: AB 7853 1: AB 7854 2: B 7855 7856 /\A.*?(a|bc)/ 7857 ba 7858 0: ba 7859 1: a 7860 7861 /\A.*?(?:a|bc)++/ 7862 ba 7863 0: ba 7864 7865 /\A.*?(a|bc)++/ 7866 ba 7867 0: ba 7868 1: a 7869 7870 /\A.*?(?:a|bc|d)/ 7871 ba 7872 0: ba 7873 7874 /(?:(b))++/ 7875 beetle 7876 0: b 7877 1: b 7878 7879 /(?(?=(a(*ACCEPT)z))a)/ 7880 a 7881 0: a 7882 1: a 7883 7884 /^(a)(?1)+ab/ 7885 aaaab 7886 0: aaaab 7887 1: a 7888 7889 /^(a)(?1)++ab/ 7890 \= Expect no match 7891 aaaab 7892 No match 7893 7894 /^(?=a(*:M))aZ/mark 7895 aZbc 7896 0: aZ 7897 MK: M 7898 7899 /^(?!(*:M)b)aZ/mark 7900 aZbc 7901 0: aZ 7902 7903 /(?(DEFINE)(a))?b(?1)/ 7904 backgammon 7905 0: ba 7906 7907 /^\N+/ 7908 abc\ndef 7909 0: abc 7910 7911 /^\N{1,}/ 7912 abc\ndef 7913 0: abc 7914 7915 /(?(R)a+|(?R)b)/ 7916 aaaabcde 7917 0: aaaab 7918 7919 /(?(R)a+|((?R))b)/ 7920 aaaabcde 7921 0: aaaab 7922 1: aaaa 7923 7924 /((?(R)a+|(?1)b))/ 7925 aaaabcde 7926 0: aaaab 7927 1: aaaab 7928 7929 /((?(R1)a+|(?1)b))/ 7930 aaaabcde 7931 0: aaaab 7932 1: aaaab 7933 7934 /((?(R)a|(?1)))*/ 7935 aaa 7936 0: aaa 7937 1: a 7938 7939 /((?(R)a|(?1)))+/ 7940 aaa 7941 0: aaa 7942 1: a 7943 7944 /a(*:any 7945 name)/mark 7946 abc 7947 0: a 7948 MK: any \x0aname 7949 7950 /(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))/ 7951 a 7952 0: a 7953 ba 7954 0: a 7955 bba 7956 0: a 7957 7958 # Checking revised (*THEN) handling. 7959 7960 # Capture 7961 7962 /^.*? (a(*THEN)b) c/x 7963 \= Expect no match 7964 aabc 7965 No match 7966 7967 /^.*? (a(*THEN)b|(*F)) c/x 7968 aabc 7969 0: aabc 7970 1: ab 7971 7972 /^.*? ( (a(*THEN)b) | (*F) ) c/x 7973 aabc 7974 0: aabc 7975 1: ab 7976 2: ab 7977 7978 /^.*? ( (a(*THEN)b) ) c/x 7979 \= Expect no match 7980 aabc 7981 No match 7982 7983 # Non-capture 7984 7985 /^.*? (?:a(*THEN)b) c/x 7986 \= Expect no match 7987 aabc 7988 No match 7989 7990 /^.*? (?:a(*THEN)b|(*F)) c/x 7991 aabc 7992 0: aabc 7993 7994 /^.*? (?: (?:a(*THEN)b) | (*F) ) c/x 7995 aabc 7996 0: aabc 7997 7998 /^.*? (?: (?:a(*THEN)b) ) c/x 7999 \= Expect no match 8000 aabc 8001 No match 8002 8003 # Atomic 8004 8005 /^.*? (?>a(*THEN)b) c/x 8006 \= Expect no match 8007 aabc 8008 No match 8009 8010 /^.*? (?>a(*THEN)b|(*F)) c/x 8011 aabc 8012 0: aabc 8013 8014 /^.*? (?> (?>a(*THEN)b) | (*F) ) c/x 8015 aabc 8016 0: aabc 8017 8018 /^.*? (?> (?>a(*THEN)b) ) c/x 8019 \= Expect no match 8020 aabc 8021 No match 8022 8023 # Possessive capture 8024 8025 /^.*? (a(*THEN)b)++ c/x 8026 \= Expect no match 8027 aabc 8028 No match 8029 8030 /^.*? (a(*THEN)b|(*F))++ c/x 8031 aabc 8032 0: aabc 8033 1: ab 8034 8035 /^.*? ( (a(*THEN)b)++ | (*F) )++ c/x 8036 aabc 8037 0: aabc 8038 1: ab 8039 2: ab 8040 8041 /^.*? ( (a(*THEN)b)++ )++ c/x 8042 \= Expect no match 8043 aabc 8044 No match 8045 8046 # Possessive non-capture 8047 8048 /^.*? (?:a(*THEN)b)++ c/x 8049 \= Expect no match 8050 aabc 8051 No match 8052 8053 /^.*? (?:a(*THEN)b|(*F))++ c/x 8054 aabc 8055 0: aabc 8056 8057 /^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c/x 8058 aabc 8059 0: aabc 8060 8061 /^.*? (?: (?:a(*THEN)b)++ )++ c/x 8062 \= Expect no match 8063 aabc 8064 No match 8065 8066 # Condition assertion 8067 8068 /^(?(?=a(*THEN)b)ab|ac)/ 8069 ac 8070 0: ac 8071 8072 # Condition 8073 8074 /^.*?(?(?=a)a|b(*THEN)c)/ 8075 \= Expect no match 8076 ba 8077 No match 8078 8079 /^.*?(?:(?(?=a)a|b(*THEN)c)|d)/ 8080 ba 8081 0: ba 8082 8083 /^.*?(?(?=a)a(*THEN)b|c)/ 8084 \= Expect no match 8085 ac 8086 No match 8087 8088 # Assertion 8089 8090 /^.*(?=a(*THEN)b)/ 8091 aabc 8092 0: a 8093 8094 # -------------------------- 8095 8096 /(?>a(*:m))/imsx,mark 8097 a 8098 0: a 8099 MK: m 8100 8101 /(?>(a)(*:m))/imsx,mark 8102 a 8103 0: a 8104 1: a 8105 MK: m 8106 8107 /(?<=a(*ACCEPT)b)c/ 8108 xacd 8109 0: c 8110 8111 /(?<=(a(*ACCEPT)b))c/ 8112 xacd 8113 0: c 8114 1: a 8115 8116 /(?<=(a(*COMMIT)b))c/ 8117 xabcd 8118 0: c 8119 1: ab 8120 \= Expect no match 8121 xacd 8122 No match 8123 8124 /(?<!a(*FAIL)b)c/ 8125 xcd 8126 0: c 8127 acd 8128 0: c 8129 8130 /(?<=a(*:N)b)c/mark 8131 xabcd 8132 0: c 8133 MK: N 8134 8135 /(?<=a(*PRUNE)b)c/ 8136 xabcd 8137 0: c 8138 8139 /(?<=a(*SKIP)b)c/ 8140 xabcd 8141 0: c 8142 8143 /(?<=a(*THEN)b)c/ 8144 xabcd 8145 0: c 8146 8147 /(a)(?2){2}(.)/ 8148 abcd 8149 0: abcd 8150 1: a 8151 2: d 8152 8153 /(*MARK:A)(*PRUNE:B)(C|X)/mark 8154 C 8155 0: C 8156 1: C 8157 MK: B 8158 \= Expect no match 8159 D 8160 No match, mark = B 8161 8162 /(*MARK:A)(*PRUNE:B)(C|X)/mark 8163 C 8164 0: C 8165 1: C 8166 MK: B 8167 \= Expect no match 8168 D 8169 No match, mark = B 8170 8171 /(*MARK:A)(*THEN:B)(C|X)/mark 8172 C 8173 0: C 8174 1: C 8175 MK: B 8176 \= Expect no match 8177 D 8178 No match, mark = B 8179 8180 /(*MARK:A)(*THEN:B)(C|X)/mark,no_start_optimize 8181 C 8182 0: C 8183 1: C 8184 MK: B 8185 \= Expect no match 8186 D 8187 No match, mark = B 8188 8189 /(*MARK:A)(*THEN:B)(C|X)/mark 8190 C 8191 0: C 8192 1: C 8193 MK: B 8194 \= Expect no match 8195 D 8196 No match, mark = B 8197 8198 # This should fail, as the skip causes a bump to offset 3 (the skip). 8199 8200 /A(*MARK:A)A+(*SKIP)(B|Z) | AC/x,mark 8201 \= Expect no match 8202 AAAC 8203 No match, mark = A 8204 8205 # Same 8206 8207 /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/x,mark 8208 \= Expect no match 8209 AAAC 8210 No match, mark = B 8211 8212 /A(*:A)A+(*SKIP)(B|Z) | AC/x,mark 8213 \= Expect no match 8214 AAAC 8215 No match, mark = A 8216 8217 # This should fail, as a null name is the same as no name. 8218 8219 /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/x,mark 8220 \= Expect no match 8221 AAAC 8222 No match, mark = A 8223 8224 # A check on what happens after hitting a mark and them bumping along to 8225 # something that does not even start. Perl reports tags after the failures 8226 # here, though it does not when the individual letters are made into something 8227 # more complicated. 8228 8229 /A(*:A)B|XX(*:B)Y/mark 8230 AABC 8231 0: AB 8232 MK: A 8233 XXYZ 8234 0: XXY 8235 MK: B 8236 \= Expect no match 8237 XAQQ 8238 No match, mark = A 8239 XAQQXZZ 8240 No match, mark = A 8241 AXQQQ 8242 No match, mark = A 8243 AXXQQQ 8244 No match, mark = B 8245 8246 /^(A(*THEN:A)B|C(*THEN:B)D)/mark 8247 AB 8248 0: AB 8249 1: AB 8250 MK: A 8251 CD 8252 0: CD 8253 1: CD 8254 MK: B 8255 \= Expect no match 8256 AC 8257 No match, mark = A 8258 CB 8259 No match, mark = B 8260 8261 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark 8262 AB 8263 0: AB 8264 1: AB 8265 MK: A 8266 CD 8267 0: CD 8268 1: CD 8269 MK: B 8270 \= Expect no match 8271 AC 8272 No match, mark = A 8273 CB 8274 No match, mark = B 8275 8276 # An empty name does not pass back an empty string. It is the same as if no 8277 # name were given. 8278 8279 /^(A(*PRUNE:)B|C(*PRUNE:B)D)/mark 8280 AB 8281 0: AB 8282 1: AB 8283 CD 8284 0: CD 8285 1: CD 8286 MK: B 8287 8288 # PRUNE goes to next bumpalong; COMMIT does not. 8289 8290 /A(*PRUNE:A)B/mark 8291 ACAB 8292 0: AB 8293 MK: A 8294 8295 # Mark names can be duplicated. 8296 8297 /A(*:A)B|X(*:A)Y/mark 8298 AABC 8299 0: AB 8300 MK: A 8301 XXYZ 8302 0: XY 8303 MK: A 8304 8305 /b(*:m)f|a(*:n)w/mark 8306 aw 8307 0: aw 8308 MK: n 8309 \= Expect no match 8310 abc 8311 No match, mark = m 8312 8313 /b(*:m)f|aw/mark 8314 abaw 8315 0: aw 8316 \= Expect no match 8317 abc 8318 No match, mark = m 8319 abax 8320 No match, mark = m 8321 8322 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/x,mark 8323 AAAC 8324 0: AAC 8325 8326 /a(*PRUNE:X)bc|qq/mark,no_start_optimize 8327 \= Expect no match 8328 axy 8329 No match, mark = X 8330 8331 /a(*THEN:X)bc|qq/mark,no_start_optimize 8332 \= Expect no match 8333 axy 8334 No match, mark = X 8335 8336 /(?=a(*MARK:A)b)..x/mark 8337 abxy 8338 0: abx 8339 MK: A 8340 \= Expect no match 8341 abpq 8342 No match 8343 8344 /(?=a(*MARK:A)b)..(*:Y)x/mark 8345 abxy 8346 0: abx 8347 MK: Y 8348 \= Expect no match 8349 abpq 8350 No match 8351 8352 /(?=a(*PRUNE:A)b)..x/mark 8353 abxy 8354 0: abx 8355 MK: A 8356 \= Expect no match 8357 abpq 8358 No match 8359 8360 /(?=a(*PRUNE:A)b)..(*:Y)x/mark 8361 abxy 8362 0: abx 8363 MK: Y 8364 \= Expect no match 8365 abpq 8366 No match 8367 8368 /(?=a(*THEN:A)b)..x/mark 8369 abxy 8370 0: abx 8371 MK: A 8372 \= Expect no match 8373 abpq 8374 No match 8375 8376 /(?=a(*THEN:A)b)..(*:Y)x/mark 8377 abxy 8378 0: abx 8379 MK: Y 8380 \= Expect no match 8381 abpq 8382 No match 8383 8384 /(another)?(\1?)test/ 8385 hello world test 8386 0: test 8387 1: <unset> 8388 2: 8389 8390 /(another)?(\1+)test/ 8391 \= Expect no match 8392 hello world test 8393 No match 8394 8395 /(a(*COMMIT)b){0}a(?1)|aac/ 8396 aac 8397 0: aac 8398 8399 /((?:a?)*)*c/ 8400 aac 8401 0: aac 8402 1: 8403 8404 /((?>a?)*)*c/ 8405 aac 8406 0: aac 8407 1: 8408 8409 /(?>.*?a)(?<=ba)/ 8410 aba 8411 0: ba 8412 8413 /(?:.*?a)(?<=ba)/ 8414 aba 8415 0: aba 8416 8417 /(?>.*?a)b/s 8418 aab 8419 0: ab 8420 8421 /(?>.*?a)b/ 8422 aab 8423 0: ab 8424 8425 /(?>^a)b/s 8426 \= Expect no match 8427 aab 8428 No match 8429 8430 /(?>.*?)(?<=(abcd)|(wxyz))/ 8431 alphabetabcd 8432 0: 8433 1: abcd 8434 endingwxyz 8435 0: 8436 1: <unset> 8437 2: wxyz 8438 8439 /(?>.*)(?<=(abcd)|(wxyz))/ 8440 alphabetabcd 8441 0: alphabetabcd 8442 1: abcd 8443 endingwxyz 8444 0: endingwxyz 8445 1: <unset> 8446 2: wxyz 8447 8448 "(?>.*)foo" 8449 \= Expect no match 8450 abcdfooxyz 8451 No match 8452 8453 "(?>.*?)foo" 8454 abcdfooxyz 8455 0: foo 8456 8457 /(?:(a(*PRUNE)b)){0}(?:(?1)|ac)/ 8458 ac 8459 0: ac 8460 8461 /(?:(a(*SKIP)b)){0}(?:(?1)|ac)/ 8462 ac 8463 0: ac 8464 8465 /(?<=(*SKIP)ac)a/ 8466 \= Expect no match 8467 aa 8468 No match 8469 8470 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark 8471 AAAC 8472 0: AC 8473 8474 /a(*SKIP:m)x|ac(*:n)(*SKIP:n)d|ac/mark 8475 acacd 8476 0: acd 8477 MK: n 8478 8479 /A(*SKIP:m)x|A(*SKIP:n)x|AB/mark 8480 AB 8481 0: AB 8482 8483 /((*SKIP:r)d){0}a(*SKIP:m)x|ac(*:n)|ac/mark 8484 acacd 8485 0: ac 8486 MK: n 8487 8488 # Tests that try to figure out how Perl works. My hypothesis is that the first 8489 # verb that is backtracked onto is the one that acts. This seems to be the case 8490 # almost all the time, but there is one exception that is perhaps a bug. 8491 8492 # This matches "aaaac"; each PRUNE advances one character until the subject no 8493 # longer starts with 5 'a's. 8494 8495 /aaaaa(*PRUNE)b|a+c/ 8496 aaaaaac 8497 0: aaaac 8498 8499 # Putting SKIP in front of PRUNE makes no difference, as it is never 8500 # backtracked onto, whether or not it has a label. 8501 8502 /aaaaa(*SKIP)(*PRUNE)b|a+c/ 8503 aaaaaac 8504 0: aaaac 8505 8506 /aaaaa(*SKIP:N)(*PRUNE)b|a+c/ 8507 aaaaaac 8508 0: aaaac 8509 8510 /aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c/ 8511 aaaaaac 8512 0: aaaac 8513 8514 # Putting THEN in front makes no difference. 8515 8516 /aaaaa(*THEN)(*PRUNE)b|a+c/ 8517 aaaaaac 8518 0: aaaac 8519 8520 # However, putting COMMIT in front of the prune changes it to "no match". I 8521 # think this is inconsistent and possibly a bug. For the moment, running this 8522 # test is moved out of the Perl-compatible file. 8523 8524 /aaaaa(*COMMIT)(*PRUNE)b|a+c/ 8525 8526 # OK, lets play the same game again using SKIP instead of PRUNE. 8527 8528 # This matches "ac" because SKIP forces the next match to start on the 8529 # sixth "a". 8530 8531 /aaaaa(*SKIP)b|a+c/ 8532 aaaaaac 8533 0: ac 8534 8535 # Putting PRUNE in front makes no difference. 8536 8537 /aaaaa(*PRUNE)(*SKIP)b|a+c/ 8538 aaaaaac 8539 0: ac 8540 8541 # Putting THEN in front makes no difference. 8542 8543 /aaaaa(*THEN)(*SKIP)b|a+c/ 8544 aaaaaac 8545 0: ac 8546 8547 # In this case, neither does COMMIT. This still matches "ac". 8548 8549 /aaaaa(*COMMIT)(*SKIP)b|a+c/ 8550 aaaaaac 8551 0: ac 8552 8553 # This gives "no match", as expected. 8554 8555 /aaaaa(*COMMIT)b|a+c/ 8556 \= Expect no match 8557 aaaaaac 8558 No match 8559 8560 # ---- Tests using THEN ---- 8561 8562 # This matches "aaaaaac", as expected. 8563 8564 /aaaaa(*THEN)b|a+c/ 8565 aaaaaac 8566 0: aaaaaac 8567 8568 # Putting SKIP in front makes no difference. 8569 8570 /aaaaa(*SKIP)(*THEN)b|a+c/ 8571 aaaaaac 8572 0: aaaaaac 8573 8574 # Putting PRUNE in front makes no difference. 8575 8576 /aaaaa(*PRUNE)(*THEN)b|a+c/ 8577 aaaaaac 8578 0: aaaaaac 8579 8580 # Putting COMMIT in front makes no difference. 8581 8582 /aaaaa(*COMMIT)(*THEN)b|a+c/ 8583 aaaaaac 8584 0: aaaaaac 8585 8586 # End of "priority" tests 8587 8588 /aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+/ 8589 aaaaaa 8590 0: a 8591 8592 /aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 8593 aaaaaa 8594 0: a 8595 8596 /aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+/ 8597 aaaaaa 8598 0: aaaa 8599 8600 /aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 8601 aaaaaa 8602 0: a 8603 8604 /a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c/ 8605 aaaac 8606 0: aac 8607 8608 /a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c/ 8609 aaaac 8610 0: ac 8611 8612 /aaa(*PRUNE:A)a(*SKIP:A)b|a+c/ 8613 aaaac 8614 0: aac 8615 8616 /aaa(*MARK:A)a(*SKIP:A)b|a+c/ 8617 aaaac 8618 0: ac 8619 8620 /a(*:m)a(*COMMIT)(*SKIP:m)b|a+c/mark 8621 aaaaaac 8622 0: ac 8623 8624 /.?(a|b(*THEN)c)/ 8625 ba 8626 0: ba 8627 1: a 8628 8629 /(a(*COMMIT)b)c|abd/ 8630 abc 8631 0: abc 8632 1: ab 8633 \= Expect no match 8634 abd 8635 No match 8636 8637 /(?=a(*COMMIT)b)abc|abd/ 8638 abc 8639 0: abc 8640 abd 8641 0: abd 8642 8643 /(?>a(*COMMIT)b)c|abd/ 8644 abc 8645 0: abc 8646 abd 8647 0: abd 8648 8649 /a(?=b(*COMMIT)c)[^d]|abd/ 8650 abc 8651 0: ab 8652 \= Expect no match 8653 abd 8654 No match 8655 8656 /a(?=bc).|abd/ 8657 abd 8658 0: abd 8659 abc 8660 0: ab 8661 8662 /a(?>b(*COMMIT)c)d|abd/ 8663 \= Expect no match 8664 abceabd 8665 No match 8666 8667 /a(?>bc)d|abd/ 8668 abceabd 8669 0: abd 8670 8671 /(?>a(*COMMIT)b)c|abd/ 8672 abd 8673 0: abd 8674 8675 /(?>a(*COMMIT)c)d|abd/ 8676 \= Expect no match 8677 abd 8678 No match 8679 8680 /((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))/ 8681 ac 8682 0: ac 8683 1: <unset> 8684 2: c 8685 8686 # These tests were formerly in test 2, but changes in PCRE and Perl have 8687 # made them compatible. 8688 8689 /^(a)?(?(1)a|b)+$/ 8690 \= Expect no match 8691 a 8692 No match 8693 8694 /(?=a\Kb)ab/ 8695 ab 8696 0: b 8697 8698 /(?!a\Kb)ac/ 8699 ac 8700 0: ac 8701 8702 /^abc(?<=b\Kc)d/ 8703 abcd 8704 0: cd 8705 8706 /^abc(?<!b\Kq)d/ 8707 abcd 8708 0: abcd 8709 8710 /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/x,mark 8711 \= Expect no match 8712 AAAC 8713 No match, mark = A 8714 8715 /^((abc|abcx)(*THEN)y|abcd)/ 8716 abcd 8717 0: abcd 8718 1: abcd 8719 \= Expect no match 8720 abcxy 8721 No match 8722 8723 /^((yes|no)(*THEN)(*F))?/ 8724 \= Expect no match 8725 yes 8726 No match 8727 8728 /(A (.*) C? (*THEN) | A D) (*FAIL)/x 8729 \= Expect no match 8730 AbcdCBefgBhiBqz 8731 No match 8732 8733 /(A (.*) C? (*THEN) | A D) z/x 8734 \= Expect no match 8735 AbcdCBefgBhiBqz 8736 No match 8737 8738 /(A (.*) C? (*THEN) | A D) \s* (*FAIL)/x 8739 \= Expect no match 8740 AbcdCBefgBhiBqz 8741 No match 8742 8743 /(A (.*) C? (*THEN) | A D) \s* z/x 8744 \= Expect no match 8745 AbcdCBefgBhiBqz 8746 No match 8747 8748 /(A (.*) (?:C|) (*THEN) | A D) (*FAIL)/x 8749 \= Expect no match 8750 AbcdCBefgBhiBqz 8751 No match 8752 8753 /(A (.*) (?:C|) (*THEN) | A D) z/x 8754 \= Expect no match 8755 AbcdCBefgBhiBqz 8756 No match 8757 8758 /(A (.*) C{0,6} (*THEN) | A D) (*FAIL)/x 8759 \= Expect no match 8760 AbcdCBefgBhiBqz 8761 No match 8762 8763 /(A (.*) C{0,6} (*THEN) | A D) z/x 8764 \= Expect no match 8765 AbcdCBefgBhiBqz 8766 No match 8767 8768 /(A (.*) (CE){0,6} (*THEN) | A D) (*FAIL)/x 8769 \= Expect no match 8770 AbcdCEBefgBhiBqz 8771 No match 8772 8773 /(A (.*) (CE){0,6} (*THEN) | A D) z/x 8774 \= Expect no match 8775 AbcdCEBefgBhiBqz 8776 No match 8777 8778 /(A (.*) (CE*){0,6} (*THEN) | A D) (*FAIL)/x 8779 \= Expect no match 8780 AbcdCBefgBhiBqz 8781 No match 8782 8783 /(A (.*) (CE*){0,6} (*THEN) | A D) z/x 8784 \= Expect no match 8785 AbcdCBefgBhiBqz 8786 No match 8787 8788 /(?=a(*COMMIT)b|ac)ac|ac/ 8789 \= Expect no match 8790 ac 8791 No match 8792 8793 /(?=a(*COMMIT)b|(ac)) ac | (a)c/x 8794 \= Expect no match 8795 ac 8796 No match 8797 8798 # ---- 8799 8800 /(?(?!b(*THEN)a)bn|bnn)/ 8801 bnn 8802 0: bn 8803 8804 /(?!b(*SKIP)a)bn|bnn/ 8805 bnn 8806 0: bn 8807 8808 /(?(?!b(*SKIP)a)bn|bnn)/ 8809 bnn 8810 0: bn 8811 8812 /(?!b(*PRUNE)a)bn|bnn/ 8813 bnn 8814 0: bn 8815 8816 /(?(?!b(*PRUNE)a)bn|bnn)/ 8817 bnn 8818 0: bn 8819 8820 /(?!b(*COMMIT)a)bn|bnn/ 8821 bnn 8822 0: bn 8823 8824 /(?(?!b(*COMMIT)a)bn|bnn)/ 8825 bnn 8826 0: bn 8827 8828 /(?=b(*SKIP)a)bn|bnn/ 8829 \= Expect no match 8830 bnn 8831 No match 8832 8833 /(?=b(*THEN)a)bn|bnn/ 8834 bnn 8835 0: bnn 8836 8837 /^(?!a(*SKIP)b)/ 8838 ac 8839 0: 8840 8841 /^(?!a(*SKIP)b)../ 8842 acd 8843 0: ac 8844 8845 /(?!a(*SKIP)b)../ 8846 acd 8847 0: ac 8848 8849 /^(?(?!a(*SKIP)b))/ 8850 ac 8851 0: 8852 8853 /^(?!a(*PRUNE)b)../ 8854 acd 8855 0: ac 8856 8857 /(?!a(*PRUNE)b)../ 8858 acd 8859 0: ac 8860 8861 /(?!a(*COMMIT)b)ac|cd/ 8862 ac 8863 0: ac 8864 8865 /\A.*?(?:a|bc)/ 8866 ba 8867 0: ba 8868 8869 /^(A(*THEN)B|C(*THEN)D)/ 8870 CD 8871 0: CD 8872 1: CD 8873 8874 /(*:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8875 abc 8876 0: b 8877 MK: m(m 8878 8879 /(*PRUNE:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8880 abc 8881 0: b 8882 MK: m(m 8883 8884 /(*SKIP:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8885 abc 8886 0: b 8887 8888 /(*THEN:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8889 abc 8890 0: b 8891 MK: m(m 8892 8893 /^\d*\w{4}/ 8894 1234 8895 0: 1234 8896 \= Expect no match 8897 123 8898 No match 8899 8900 /^[^b]*\w{4}/ 8901 aaaa 8902 0: aaaa 8903 \= Expect no match 8904 aaa 8905 No match 8906 8907 /^[^b]*\w{4}/i 8908 aaaa 8909 0: aaaa 8910 \= Expect no match 8911 aaa 8912 No match 8913 8914 /^a*\w{4}/ 8915 aaaa 8916 0: aaaa 8917 \= Expect no match 8918 aaa 8919 No match 8920 8921 /^a*\w{4}/i 8922 aaaa 8923 0: aaaa 8924 \= Expect no match 8925 aaa 8926 No match 8927 8928 /(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames 8929 foofoo 8930 0: foofoo 8931 1: foo 8932 barbar 8933 0: barbar 8934 1: <unset> 8935 2: bar 8936 8937 /(?<n>A)(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames 8938 AfooA 8939 0: AfooA 8940 1: A 8941 2: foo 8942 AbarA 8943 0: AbarA 8944 1: A 8945 2: <unset> 8946 3: bar 8947 \= Expect no match 8948 Afoofoo 8949 No match 8950 Abarbar 8951 No match 8952 8953 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 8954 1 IN SOA non-sp1 non-sp2( 8955 0: 1 IN SOA non-sp1 non-sp2( 8956 1: 1 8957 2: non-sp1 8958 3: non-sp2 8959 8960 /^ (?:(?<A>A)|(?'B'B)(?<A>A)) (?('A')x) (?(<B>)y)$/x,dupnames 8961 Ax 8962 0: Ax 8963 1: A 8964 BAxy 8965 0: BAxy 8966 1: <unset> 8967 2: B 8968 3: A 8969 8970 /^A\xZ/ 8971 A\0Z 8972 0: A\x00Z 8973 8974 /^A\o{123}B/ 8975 A\123B 8976 0: ASB 8977 8978 / ^ a + + b $ /x 8979 aaaab 8980 0: aaaab 8981 8982 / ^ a + #comment 8983 + b $ /x 8984 aaaab 8985 0: aaaab 8986 8987 / ^ a + #comment 8988 #comment 8989 + b $ /x 8990 aaaab 8991 0: aaaab 8992 8993 / ^ (?> a + ) b $ /x 8994 aaaab 8995 0: aaaab 8996 8997 / ^ ( a + ) + + \w $ /x 8998 aaaab 8999 0: aaaab 9000 1: aaaa 9001 9002 /(?:a\Kb)*+/aftertext 9003 ababc 9004 0: b 9005 0+ c 9006 9007 /(?>a\Kb)*/aftertext 9008 ababc 9009 0: b 9010 0+ c 9011 9012 /(?:a\Kb)*/aftertext 9013 ababc 9014 0: b 9015 0+ c 9016 9017 /(a\Kb)*+/aftertext 9018 ababc 9019 0: b 9020 0+ c 9021 1: ab 9022 9023 /(a\Kb)*/aftertext 9024 ababc 9025 0: b 9026 0+ c 9027 1: ab 9028 9029 /(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/ 9030 \= Expect no match 9031 acb 9032 No match 9033 9034 '\A(?:[^\"]++|\"(?:[^\"]*+|\"\")*+\")++' 9035 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9036 0: NON QUOTED "QUOT""ED" AFTER 9037 9038 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")*+\")++' 9039 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9040 0: NON QUOTED "QUOT""ED" AFTER 9041 9042 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")++\")++' 9043 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9044 0: NON QUOTED "QUOT""ED" AFTER 9045 9046 '\A([^\"1]++|[\"2]([^\"3]*+|[\"4][\"5])*+[\"6])++' 9047 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9048 0: NON QUOTED "QUOT""ED" AFTER 9049 1: AFTER 9050 2: 9051 9052 /^\w+(?>\s*)(?<=\w)/ 9053 test test 9054 0: tes 9055 9056 /(?P<same>a)(?P<same>b)/g,dupnames 9057 abbaba 9058 0: ab 9059 1: a 9060 2: b 9061 0: ab 9062 1: a 9063 2: b 9064 9065 /(?P<same>a)(?P<same>b)(?P=same)/g,dupnames 9066 abbaba 9067 0: aba 9068 1: a 9069 2: b 9070 9071 /(?P=same)?(?P<same>a)(?P<same>b)/g,dupnames 9072 abbaba 9073 0: ab 9074 1: a 9075 2: b 9076 0: ab 9077 1: a 9078 2: b 9079 9080 /(?:(?P=same)?(?:(?P<same>a)|(?P<same>b))(?P=same))+/g,dupnames 9081 bbbaaabaabb 9082 0: bbbaaaba 9083 1: a 9084 2: b 9085 0: bb 9086 1: <unset> 9087 2: b 9088 9089 /(?:(?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 9090 \= Expect no match 9091 bbbaaaccccaaabbbcc 9092 No match 9093 9094 /(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/ 9095 acl 9096 0: acl 9097 1: a 9098 bdl 9099 0: bdl 9100 1: <unset> 9101 2: b 9102 adl 9103 0: dl 9104 bcl 9105 0: l 9106 9107 /\sabc/ 9108 \x{0b}abc 9109 0: \x0babc 9110 9111 /[\Qa]\E]+/ 9112 aa]] 9113 0: aa]] 9114 9115 /[\Q]a\E]+/ 9116 aa]] 9117 0: aa]] 9118 9119 /A((((((((a))))))))\8B/ 9120 AaaB 9121 0: AaaB 9122 1: a 9123 2: a 9124 3: a 9125 4: a 9126 5: a 9127 6: a 9128 7: a 9129 8: a 9130 9131 /A(((((((((a)))))))))\9B/ 9132 AaaB 9133 0: AaaB 9134 1: a 9135 2: a 9136 3: a 9137 4: a 9138 5: a 9139 6: a 9140 7: a 9141 8: a 9142 9: a 9143 9144 /A[\8\9]B/ 9145 A8B 9146 0: A8B 9147 A9B 9148 0: A9B 9149 9150 /(|ab)*?d/ 9151 abd 9152 0: abd 9153 1: ab 9154 xyd 9155 0: d 9156 9157 /(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))/ 9158 1234abcd 9159 0: 9160 1: <unset> 9161 2: <unset> 9162 3: <unset> 9163 4: <unset> 9164 5: 9165 9166 /(\2|a)(\1)/ 9167 aaa 9168 0: aa 9169 1: a 9170 2: a 9171 9172 /(\2)(\1)/ 9173 9174 "Z*(|d*){216}" 9175 9176 "(?1)(?#?'){8}(a)" 9177 baaaaaaaaac 9178 0: aaaaaaaaa 9179 1: a 9180 9181 /((((((((((((x))))))))))))\12/ 9182 xx 9183 0: xx 9184 1: x 9185 2: x 9186 3: x 9187 4: x 9188 5: x 9189 6: x 9190 7: x 9191 8: x 9192 9: x 9193 10: x 9194 11: x 9195 12: x 9196 9197 /A[\8]B[\9]C/ 9198 A8B9C 9199 0: A8B9C 9200 9201 /(?1)()((((((\1++))\x85)+)|))/ 9202 \x85\x85 9203 0: \x85\x85 9204 1: 9205 2: \x85\x85 9206 3: \x85\x85 9207 4: \x85\x85 9208 5: \x85 9209 6: 9210 7: 9211 9212 "(?|(\k'Pm')|(?'Pm'))" 9213 abcd 9214 0: 9215 1: 9216 9217 /(?|(aaa)|(b))\g{1}/ 9218 aaaaaa 9219 0: aaaaaa 9220 1: aaa 9221 bb 9222 0: bb 9223 1: b 9224 9225 /(?|(aaa)|(b))(?1)/ 9226 aaaaaa 9227 0: aaaaaa 9228 1: aaa 9229 baaa 9230 0: baaa 9231 1: b 9232 \= Expect no match 9233 bb 9234 No match 9235 9236 /(?|(aaa)|(b))/ 9237 xaaa 9238 0: aaa 9239 1: aaa 9240 xbc 9241 0: b 9242 1: b 9243 9244 /(?|(?'a'aaa)|(?'a'b))\k'a'/ 9245 aaaaaa 9246 0: aaaaaa 9247 1: aaa 9248 bb 9249 0: bb 9250 1: b 9251 9252 /(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/dupnames 9253 aaaccccaaa 9254 0: aaaccccaaa 9255 1: aaa 9256 2: cccc 9257 bccccb 9258 0: bccccb 9259 1: b 9260 2: cccc 9261 9262 # End of testinput1 9263
