1 /-- This set of tests is for features that are compatible with all versions of 2 Perl >= 5.10, in non-UTF-8 mode. It should run clean for the 8-bit, 16-bit, 3 and 32-bit PCRE libraries. --/ 4 5 < forbid 89?=ABCDEFfGILMNPTUWXZ< 6 7 /the quick brown fox/ 8 the quick brown fox 9 0: the quick brown fox 10 The quick brown FOX 11 No match 12 What do you know about the quick brown fox? 13 0: the quick brown fox 14 What do you know about THE QUICK BROWN FOX? 15 No match 16 17 /The quick brown fox/i 18 the quick brown fox 19 0: the quick brown fox 20 The quick brown FOX 21 0: The quick brown FOX 22 What do you know about the quick brown fox? 23 0: the quick brown fox 24 What do you know about THE QUICK BROWN FOX? 25 0: THE QUICK BROWN FOX 26 27 /abcd\t\n\r\f\a\e\071\x3b\$\\\?caxyz/ 28 abcd\t\n\r\f\a\e9;\$\\?caxyz 29 0: abcd\x09\x0a\x0d\x0c\x07\x1b9;$\?caxyz 30 31 /a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz/ 32 abxyzpqrrrabbxyyyypqAzz 33 0: abxyzpqrrrabbxyyyypqAzz 34 abxyzpqrrrabbxyyyypqAzz 35 0: abxyzpqrrrabbxyyyypqAzz 36 aabxyzpqrrrabbxyyyypqAzz 37 0: aabxyzpqrrrabbxyyyypqAzz 38 aaabxyzpqrrrabbxyyyypqAzz 39 0: aaabxyzpqrrrabbxyyyypqAzz 40 aaaabxyzpqrrrabbxyyyypqAzz 41 0: aaaabxyzpqrrrabbxyyyypqAzz 42 abcxyzpqrrrabbxyyyypqAzz 43 0: abcxyzpqrrrabbxyyyypqAzz 44 aabcxyzpqrrrabbxyyyypqAzz 45 0: aabcxyzpqrrrabbxyyyypqAzz 46 aaabcxyzpqrrrabbxyyyypAzz 47 0: aaabcxyzpqrrrabbxyyyypAzz 48 aaabcxyzpqrrrabbxyyyypqAzz 49 0: aaabcxyzpqrrrabbxyyyypqAzz 50 aaabcxyzpqrrrabbxyyyypqqAzz 51 0: aaabcxyzpqrrrabbxyyyypqqAzz 52 aaabcxyzpqrrrabbxyyyypqqqAzz 53 0: aaabcxyzpqrrrabbxyyyypqqqAzz 54 aaabcxyzpqrrrabbxyyyypqqqqAzz 55 0: aaabcxyzpqrrrabbxyyyypqqqqAzz 56 aaabcxyzpqrrrabbxyyyypqqqqqAzz 57 0: aaabcxyzpqrrrabbxyyyypqqqqqAzz 58 aaabcxyzpqrrrabbxyyyypqqqqqqAzz 59 0: aaabcxyzpqrrrabbxyyyypqqqqqqAzz 60 aaaabcxyzpqrrrabbxyyyypqAzz 61 0: aaaabcxyzpqrrrabbxyyyypqAzz 62 abxyzzpqrrrabbxyyyypqAzz 63 0: abxyzzpqrrrabbxyyyypqAzz 64 aabxyzzzpqrrrabbxyyyypqAzz 65 0: aabxyzzzpqrrrabbxyyyypqAzz 66 aaabxyzzzzpqrrrabbxyyyypqAzz 67 0: aaabxyzzzzpqrrrabbxyyyypqAzz 68 aaaabxyzzzzpqrrrabbxyyyypqAzz 69 0: aaaabxyzzzzpqrrrabbxyyyypqAzz 70 abcxyzzpqrrrabbxyyyypqAzz 71 0: abcxyzzpqrrrabbxyyyypqAzz 72 aabcxyzzzpqrrrabbxyyyypqAzz 73 0: aabcxyzzzpqrrrabbxyyyypqAzz 74 aaabcxyzzzzpqrrrabbxyyyypqAzz 75 0: aaabcxyzzzzpqrrrabbxyyyypqAzz 76 aaaabcxyzzzzpqrrrabbxyyyypqAzz 77 0: aaaabcxyzzzzpqrrrabbxyyyypqAzz 78 aaaabcxyzzzzpqrrrabbbxyyyypqAzz 79 0: aaaabcxyzzzzpqrrrabbbxyyyypqAzz 80 aaaabcxyzzzzpqrrrabbbxyyyyypqAzz 81 0: aaaabcxyzzzzpqrrrabbbxyyyyypqAzz 82 aaabcxyzpqrrrabbxyyyypABzz 83 0: aaabcxyzpqrrrabbxyyyypABzz 84 aaabcxyzpqrrrabbxyyyypABBzz 85 0: aaabcxyzpqrrrabbxyyyypABBzz 86 >>>aaabxyzpqrrrabbxyyyypqAzz 87 0: aaabxyzpqrrrabbxyyyypqAzz 88 >aaaabxyzpqrrrabbxyyyypqAzz 89 0: aaaabxyzpqrrrabbxyyyypqAzz 90 >>>>abcxyzpqrrrabbxyyyypqAzz 91 0: abcxyzpqrrrabbxyyyypqAzz 92 *** Failers 93 No match 94 abxyzpqrrabbxyyyypqAzz 95 No match 96 abxyzpqrrrrabbxyyyypqAzz 97 No match 98 abxyzpqrrrabxyyyypqAzz 99 No match 100 aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz 101 No match 102 aaaabcxyzzzzpqrrrabbbxyyypqAzz 103 No match 104 aaabcxyzpqrrrabbxyyyypqqqqqqqAzz 105 No match 106 107 /^(abc){1,2}zz/ 108 abczz 109 0: abczz 110 1: abc 111 abcabczz 112 0: abcabczz 113 1: abc 114 *** Failers 115 No match 116 zz 117 No match 118 abcabcabczz 119 No match 120 >>abczz 121 No match 122 123 /^(b+?|a){1,2}?c/ 124 bc 125 0: bc 126 1: b 127 bbc 128 0: bbc 129 1: b 130 bbbc 131 0: bbbc 132 1: bb 133 bac 134 0: bac 135 1: a 136 bbac 137 0: bbac 138 1: a 139 aac 140 0: aac 141 1: a 142 abbbbbbbbbbbc 143 0: abbbbbbbbbbbc 144 1: bbbbbbbbbbb 145 bbbbbbbbbbbac 146 0: bbbbbbbbbbbac 147 1: a 148 *** Failers 149 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 *** Failers 181 No match 182 aaac 183 No match 184 abbbbbbbbbbbac 185 No match 186 187 /^(b+|a){1,2}?bc/ 188 bbc 189 0: bbc 190 1: b 191 192 /^(b*|ba){1,2}?bc/ 193 babc 194 0: babc 195 1: ba 196 bbabc 197 0: bbabc 198 1: ba 199 bababc 200 0: bababc 201 1: ba 202 *** Failers 203 No match 204 bababbc 205 No match 206 babababc 207 No match 208 209 /^(ba|b*){1,2}?bc/ 210 babc 211 0: babc 212 1: ba 213 bbabc 214 0: bbabc 215 1: ba 216 bababc 217 0: bababc 218 1: ba 219 *** Failers 220 No match 221 bababbc 222 No match 223 babababc 224 No match 225 226 /^\ca\cA\c[;\c:/ 227 \x01\x01\e;z 228 0: \x01\x01\x1b;z 229 230 /^[ab\]cde]/ 231 athing 232 0: a 233 bthing 234 0: b 235 ]thing 236 0: ] 237 cthing 238 0: c 239 dthing 240 0: d 241 ething 242 0: e 243 *** Failers 244 No match 245 fthing 246 No match 247 [thing 248 No match 249 \\thing 250 No match 251 252 /^[]cde]/ 253 ]thing 254 0: ] 255 cthing 256 0: c 257 dthing 258 0: d 259 ething 260 0: e 261 *** Failers 262 No match 263 athing 264 No match 265 fthing 266 No match 267 268 /^[^ab\]cde]/ 269 fthing 270 0: f 271 [thing 272 0: [ 273 \\thing 274 0: \ 275 *** Failers 276 0: * 277 athing 278 No match 279 bthing 280 No match 281 ]thing 282 No match 283 cthing 284 No match 285 dthing 286 No match 287 ething 288 No match 289 290 /^[^]cde]/ 291 athing 292 0: a 293 fthing 294 0: f 295 *** Failers 296 0: * 297 ]thing 298 No match 299 cthing 300 No match 301 dthing 302 No match 303 ething 304 No match 305 306 /^\/ 307 308 0: \x81 309 310 /^/ 311 312 0: \xff 313 314 /^[0-9]+$/ 315 0 316 0: 0 317 1 318 0: 1 319 2 320 0: 2 321 3 322 0: 3 323 4 324 0: 4 325 5 326 0: 5 327 6 328 0: 6 329 7 330 0: 7 331 8 332 0: 8 333 9 334 0: 9 335 10 336 0: 10 337 100 338 0: 100 339 *** Failers 340 No match 341 abc 342 No match 343 344 /^.*nter/ 345 enter 346 0: enter 347 inter 348 0: inter 349 uponter 350 0: uponter 351 352 /^xxx[0-9]+$/ 353 xxx0 354 0: xxx0 355 xxx1234 356 0: xxx1234 357 *** Failers 358 No match 359 xxx 360 No match 361 362 /^.+[0-9][0-9][0-9]$/ 363 x123 364 0: x123 365 xx123 366 0: xx123 367 123456 368 0: 123456 369 *** Failers 370 No match 371 123 372 No match 373 x1234 374 0: x1234 375 376 /^.+?[0-9][0-9][0-9]$/ 377 x123 378 0: x123 379 xx123 380 0: xx123 381 123456 382 0: 123456 383 *** Failers 384 No match 385 123 386 No match 387 x1234 388 0: x1234 389 390 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/ 391 abc!pqr=apquxz.ixr.zzz.ac.uk 392 0: abc!pqr=apquxz.ixr.zzz.ac.uk 393 1: abc 394 2: pqr 395 *** Failers 396 No match 397 !pqr=apquxz.ixr.zzz.ac.uk 398 No match 399 abc!=apquxz.ixr.zzz.ac.uk 400 No match 401 abc!pqr=apquxz:ixr.zzz.ac.uk 402 No match 403 abc!pqr=apquxz.ixr.zzz.ac.ukk 404 No match 405 406 /:/ 407 Well, we need a colon: somewhere 408 0: : 409 *** Fail if we don't 410 No match 411 412 /([\da-f:]+)$/i 413 0abc 414 0: 0abc 415 1: 0abc 416 abc 417 0: abc 418 1: abc 419 fed 420 0: fed 421 1: fed 422 E 423 0: E 424 1: E 425 :: 426 0: :: 427 1: :: 428 5f03:12C0::932e 429 0: 5f03:12C0::932e 430 1: 5f03:12C0::932e 431 fed def 432 0: def 433 1: def 434 Any old stuff 435 0: ff 436 1: ff 437 *** Failers 438 No match 439 0zzz 440 No match 441 gzzz 442 No match 443 fed\x20 444 No match 445 Any old rubbish 446 No match 447 448 /^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ 449 .1.2.3 450 0: .1.2.3 451 1: 1 452 2: 2 453 3: 3 454 A.12.123.0 455 0: A.12.123.0 456 1: 12 457 2: 123 458 3: 0 459 *** Failers 460 No match 461 .1.2.3333 462 No match 463 1.2.3 464 No match 465 1234.2.3 466 No match 467 468 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 469 1 IN SOA non-sp1 non-sp2( 470 0: 1 IN SOA non-sp1 non-sp2( 471 1: 1 472 2: non-sp1 473 3: non-sp2 474 1 IN SOA non-sp1 non-sp2 ( 475 0: 1 IN SOA non-sp1 non-sp2 ( 476 1: 1 477 2: non-sp1 478 3: non-sp2 479 *** Failers 480 No match 481 1IN SOA non-sp1 non-sp2( 482 No match 483 484 /^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/ 485 a. 486 0: a. 487 Z. 488 0: Z. 489 2. 490 0: 2. 491 ab-c.pq-r. 492 0: ab-c.pq-r. 493 1: .pq-r 494 sxk.zzz.ac.uk. 495 0: sxk.zzz.ac.uk. 496 1: .uk 497 x-.y-. 498 0: x-.y-. 499 1: .y- 500 *** Failers 501 No match 502 -abc.peq. 503 No match 504 505 /^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/ 506 *.a 507 0: *.a 508 *.b0-a 509 0: *.b0-a 510 1: 0-a 511 *.c3-b.c 512 0: *.c3-b.c 513 1: 3-b 514 2: .c 515 *.c-a.b-c 516 0: *.c-a.b-c 517 1: -a 518 2: .b-c 519 3: -c 520 *** Failers 521 No match 522 *.0 523 No match 524 *.a- 525 No match 526 *.a-b.c- 527 No match 528 *.c-a.0-c 529 No match 530 531 /^(?=ab(de))(abd)(e)/ 532 abde 533 0: abde 534 1: de 535 2: abd 536 3: e 537 538 /^(?!(ab)de|x)(abd)(f)/ 539 abdf 540 0: abdf 541 1: <unset> 542 2: abd 543 3: f 544 545 /^(?=(ab(cd)))(ab)/ 546 abcd 547 0: ab 548 1: abcd 549 2: cd 550 3: ab 551 552 /^[\da-f](\.[\da-f])*$/i 553 a.b.c.d 554 0: a.b.c.d 555 1: .d 556 A.B.C.D 557 0: A.B.C.D 558 1: .D 559 a.b.c.1.2.3.C 560 0: a.b.c.1.2.3.C 561 1: .C 562 563 /^\".*\"\s*(;.*)?$/ 564 \"1234\" 565 0: "1234" 566 \"abcd\" ; 567 0: "abcd" ; 568 1: ; 569 \"\" ; rhubarb 570 0: "" ; rhubarb 571 1: ; rhubarb 572 *** Failers 573 No match 574 \"1234\" : things 575 No match 576 577 /^$/ 578 \ 579 0: 580 *** Failers 581 No match 582 583 / ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/x 584 ab c 585 0: ab c 586 *** Failers 587 No match 588 abc 589 No match 590 ab cde 591 No match 592 593 /(?x) ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/ 594 ab c 595 0: ab c 596 *** Failers 597 No match 598 abc 599 No match 600 ab cde 601 No match 602 603 /^ a\ b[c ]d $/x 604 a bcd 605 0: a bcd 606 a b d 607 0: a b d 608 *** Failers 609 No match 610 abcd 611 No match 612 ab d 613 No match 614 615 /^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$/ 616 abcdefhijklm 617 0: abcdefhijklm 618 1: abc 619 2: bc 620 3: c 621 4: def 622 5: ef 623 6: f 624 7: hij 625 8: ij 626 9: j 627 10: klm 628 11: lm 629 12: m 630 631 /^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$/ 632 abcdefhijklm 633 0: abcdefhijklm 634 1: bc 635 2: c 636 3: ef 637 4: f 638 5: ij 639 6: j 640 7: lm 641 8: m 642 643 /^[\w][\W][\s][\S][\d][\D][\b][\n][\c]][\022]/ 644 a+ Z0+\x08\n\x1d\x12 645 0: a+ Z0+\x08\x0a\x1d\x12 646 647 /^[.^$|()*+?{,}]+/ 648 .^\$(*+)|{?,?} 649 0: .^$(*+)|{?,?} 650 651 /^a*\w/ 652 z 653 0: z 654 az 655 0: az 656 aaaz 657 0: aaaz 658 a 659 0: a 660 aa 661 0: aa 662 aaaa 663 0: aaaa 664 a+ 665 0: a 666 aa+ 667 0: aa 668 669 /^a*?\w/ 670 z 671 0: z 672 az 673 0: a 674 aaaz 675 0: a 676 a 677 0: a 678 aa 679 0: a 680 aaaa 681 0: a 682 a+ 683 0: a 684 aa+ 685 0: a 686 687 /^a+\w/ 688 az 689 0: az 690 aaaz 691 0: aaaz 692 aa 693 0: aa 694 aaaa 695 0: aaaa 696 aa+ 697 0: aa 698 699 /^a+?\w/ 700 az 701 0: az 702 aaaz 703 0: aa 704 aa 705 0: aa 706 aaaa 707 0: aa 708 aa+ 709 0: aa 710 711 /^\d{8}\w{2,}/ 712 1234567890 713 0: 1234567890 714 12345678ab 715 0: 12345678ab 716 12345678__ 717 0: 12345678__ 718 *** Failers 719 No match 720 1234567 721 No match 722 723 /^[aeiou\d]{4,5}$/ 724 uoie 725 0: uoie 726 1234 727 0: 1234 728 12345 729 0: 12345 730 aaaaa 731 0: aaaaa 732 *** Failers 733 No match 734 123456 735 No match 736 737 /^[aeiou\d]{4,5}?/ 738 uoie 739 0: uoie 740 1234 741 0: 1234 742 12345 743 0: 1234 744 aaaaa 745 0: aaaa 746 123456 747 0: 1234 748 749 /\A(abc|def)=(\1){2,3}\Z/ 750 abc=abcabc 751 0: abc=abcabc 752 1: abc 753 2: abc 754 def=defdefdef 755 0: def=defdefdef 756 1: def 757 2: def 758 *** Failers 759 No match 760 abc=defdef 761 No match 762 763 /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/ 764 abcdefghijkcda2 765 0: abcdefghijkcda2 766 1: a 767 2: b 768 3: c 769 4: d 770 5: e 771 6: f 772 7: g 773 8: h 774 9: i 775 10: j 776 11: k 777 12: cd 778 abcdefghijkkkkcda2 779 0: abcdefghijkkkkcda2 780 1: a 781 2: b 782 3: c 783 4: d 784 5: e 785 6: f 786 7: g 787 8: h 788 9: i 789 10: j 790 11: k 791 12: cd 792 793 /(cat(a(ract|tonic)|erpillar)) \1()2(3)/ 794 cataract cataract23 795 0: cataract cataract23 796 1: cataract 797 2: aract 798 3: ract 799 4: 800 5: 3 801 catatonic catatonic23 802 0: catatonic catatonic23 803 1: catatonic 804 2: atonic 805 3: tonic 806 4: 807 5: 3 808 caterpillar caterpillar23 809 0: caterpillar caterpillar23 810 1: caterpillar 811 2: erpillar 812 3: <unset> 813 4: 814 5: 3 815 816 817 /^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]/ 818 From abcd Mon Sep 01 12:33:02 1997 819 0: From abcd Mon Sep 01 12:33 820 1: abcd 821 822 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/ 823 From abcd Mon Sep 01 12:33:02 1997 824 0: From abcd Mon Sep 01 12:33 825 1: Sep 826 From abcd Mon Sep 1 12:33:02 1997 827 0: From abcd Mon Sep 1 12:33 828 1: Sep 829 *** Failers 830 No match 831 From abcd Sep 01 12:33:02 1997 832 No match 833 834 /^12.34/s 835 12\n34 836 0: 12\x0a34 837 12\r34 838 0: 12\x0d34 839 840 /\w+(?=\t)/ 841 the quick brown\t fox 842 0: brown 843 844 /foo(?!bar)(.*)/ 845 foobar is foolish see? 846 0: foolish see? 847 1: lish see? 848 849 /(?:(?!foo)...|^.{0,2})bar(.*)/ 850 foobar crowbar etc 851 0: rowbar etc 852 1: etc 853 barrel 854 0: barrel 855 1: rel 856 2barrel 857 0: 2barrel 858 1: rel 859 A barrel 860 0: A barrel 861 1: rel 862 863 /^(\D*)(?=\d)(?!123)/ 864 abc456 865 0: abc 866 1: abc 867 *** Failers 868 No match 869 abc123 870 No match 871 872 /^1234(?# test newlines 873 inside)/ 874 1234 875 0: 1234 876 877 /^1234 #comment in extended re 878 /x 879 1234 880 0: 1234 881 882 /#rhubarb 883 abcd/x 884 abcd 885 0: abcd 886 887 /^abcd#rhubarb/x 888 abcd 889 0: abcd 890 891 /^(a)\1{2,3}(.)/ 892 aaab 893 0: aaab 894 1: a 895 2: b 896 aaaab 897 0: aaaab 898 1: a 899 2: b 900 aaaaab 901 0: aaaaa 902 1: a 903 2: a 904 aaaaaab 905 0: aaaaa 906 1: a 907 2: a 908 909 /(?!^)abc/ 910 the abc 911 0: abc 912 *** Failers 913 No match 914 abc 915 No match 916 917 /(?=^)abc/ 918 abc 919 0: abc 920 *** Failers 921 No match 922 the abc 923 No match 924 925 /^[ab]{1,3}(ab*|b)/ 926 aabbbbb 927 0: aabb 928 1: b 929 930 /^[ab]{1,3}?(ab*|b)/ 931 aabbbbb 932 0: aabbbbb 933 1: abbbbb 934 935 /^[ab]{1,3}?(ab*?|b)/ 936 aabbbbb 937 0: aa 938 1: a 939 940 /^[ab]{1,3}(ab*?|b)/ 941 aabbbbb 942 0: aabb 943 1: b 944 945 / (?: [\040\t] | \( 946 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 947 \) )* # optional leading comment 948 (?: (?: 949 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 950 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 951 | 952 " (?: # opening quote... 953 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 954 | # or 955 \\ [^\x80-\xff] # Escaped something (something != CR) 956 )* " # closing quote 957 ) # initial word 958 (?: (?: [\040\t] | \( 959 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 960 \) )* \. (?: [\040\t] | \( 961 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 962 \) )* (?: 963 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 964 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 965 | 966 " (?: # opening quote... 967 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 968 | # or 969 \\ [^\x80-\xff] # Escaped something (something != CR) 970 )* " # closing quote 971 ) )* # further okay, if led by a period 972 (?: [\040\t] | \( 973 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 974 \) )* @ (?: [\040\t] | \( 975 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 976 \) )* (?: 977 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 978 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 979 | \[ # [ 980 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 981 \] # ] 982 ) # initial subdomain 983 (?: # 984 (?: [\040\t] | \( 985 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 986 \) )* \. # if led by a period... 987 (?: [\040\t] | \( 988 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 989 \) )* (?: 990 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 991 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 992 | \[ # [ 993 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 994 \] # ] 995 ) # ...further okay 996 )* 997 # address 998 | # or 999 (?: 1000 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1001 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1002 | 1003 " (?: # opening quote... 1004 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1005 | # or 1006 \\ [^\x80-\xff] # Escaped something (something != CR) 1007 )* " # closing quote 1008 ) # one word, optionally followed by.... 1009 (?: 1010 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] | # atom and space parts, or... 1011 \( 1012 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1013 \) | # comments, or... 1014 1015 " (?: # opening quote... 1016 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1017 | # or 1018 \\ [^\x80-\xff] # Escaped something (something != CR) 1019 )* " # closing quote 1020 # quoted strings 1021 )* 1022 < (?: [\040\t] | \( 1023 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1024 \) )* # leading < 1025 (?: @ (?: [\040\t] | \( 1026 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1027 \) )* (?: 1028 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1029 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1030 | \[ # [ 1031 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1032 \] # ] 1033 ) # initial subdomain 1034 (?: # 1035 (?: [\040\t] | \( 1036 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1037 \) )* \. # if led by a period... 1038 (?: [\040\t] | \( 1039 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1040 \) )* (?: 1041 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1042 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1043 | \[ # [ 1044 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1045 \] # ] 1046 ) # ...further okay 1047 )* 1048 1049 (?: (?: [\040\t] | \( 1050 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1051 \) )* , (?: [\040\t] | \( 1052 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1053 \) )* @ (?: [\040\t] | \( 1054 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 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 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1060 \] # ] 1061 ) # initial subdomain 1062 (?: # 1063 (?: [\040\t] | \( 1064 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1065 \) )* \. # if led by a period... 1066 (?: [\040\t] | \( 1067 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1068 \) )* (?: 1069 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1070 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1071 | \[ # [ 1072 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1073 \] # ] 1074 ) # ...further okay 1075 )* 1076 )* # further okay, if led by comma 1077 : # closing colon 1078 (?: [\040\t] | \( 1079 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1080 \) )* )? # optional route 1081 (?: 1082 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1083 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1084 | 1085 " (?: # opening quote... 1086 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1087 | # or 1088 \\ [^\x80-\xff] # Escaped something (something != CR) 1089 )* " # closing quote 1090 ) # initial word 1091 (?: (?: [\040\t] | \( 1092 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1093 \) )* \. (?: [\040\t] | \( 1094 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1095 \) )* (?: 1096 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1097 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1098 | 1099 " (?: # opening quote... 1100 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1101 | # or 1102 \\ [^\x80-\xff] # Escaped something (something != CR) 1103 )* " # closing quote 1104 ) )* # further okay, if led by a period 1105 (?: [\040\t] | \( 1106 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1107 \) )* @ (?: [\040\t] | \( 1108 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1109 \) )* (?: 1110 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1111 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1112 | \[ # [ 1113 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1114 \] # ] 1115 ) # initial subdomain 1116 (?: # 1117 (?: [\040\t] | \( 1118 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1119 \) )* \. # if led by a period... 1120 (?: [\040\t] | \( 1121 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1122 \) )* (?: 1123 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1124 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1125 | \[ # [ 1126 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1127 \] # ] 1128 ) # ...further okay 1129 )* 1130 # address spec 1131 (?: [\040\t] | \( 1132 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1133 \) )* > # trailing > 1134 # name and address 1135 ) (?: [\040\t] | \( 1136 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1137 \) )* # optional trailing comment 1138 /x 1139 Alan Other <user\@dom.ain> 1140 0: Alan Other <user (a] dom.ain> 1141 <user\@dom.ain> 1142 0: user (a] dom.ain 1143 user\@dom.ain 1144 0: user (a] dom.ain 1145 \"A. Other\" <user.1234\@dom.ain> (a comment) 1146 0: "A. Other" <user.1234 (a] dom.ain> (a comment) 1147 A. Other <user.1234\@dom.ain> (a comment) 1148 0: Other <user.1234 (a] dom.ain> (a comment) 1149 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 1150 0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay 1151 A missing angle <user\@some.where 1152 0: user (a] some.where 1153 *** Failers 1154 No match 1155 The quick brown fox 1156 No match 1157 1158 /[\040\t]* # Nab whitespace. 1159 (?: 1160 \( # ( 1161 [^\\\x80-\xff\n\015()] * # normal* 1162 (?: # ( 1163 (?: \\ [^\x80-\xff] | 1164 \( # ( 1165 [^\\\x80-\xff\n\015()] * # normal* 1166 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1167 \) # ) 1168 ) # special 1169 [^\\\x80-\xff\n\015()] * # normal* 1170 )* # )* 1171 \) # ) 1172 [\040\t]* )* # If comment found, allow more spaces. 1173 # optional leading comment 1174 (?: 1175 (?: 1176 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1177 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1178 # Atom 1179 | # or 1180 " # " 1181 [^\\\x80-\xff\n\015"] * # normal 1182 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1183 " # " 1184 # Quoted string 1185 ) 1186 [\040\t]* # Nab whitespace. 1187 (?: 1188 \( # ( 1189 [^\\\x80-\xff\n\015()] * # normal* 1190 (?: # ( 1191 (?: \\ [^\x80-\xff] | 1192 \( # ( 1193 [^\\\x80-\xff\n\015()] * # normal* 1194 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1195 \) # ) 1196 ) # special 1197 [^\\\x80-\xff\n\015()] * # normal* 1198 )* # )* 1199 \) # ) 1200 [\040\t]* )* # If comment found, allow more spaces. 1201 (?: 1202 \. 1203 [\040\t]* # Nab whitespace. 1204 (?: 1205 \( # ( 1206 [^\\\x80-\xff\n\015()] * # normal* 1207 (?: # ( 1208 (?: \\ [^\x80-\xff] | 1209 \( # ( 1210 [^\\\x80-\xff\n\015()] * # normal* 1211 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1212 \) # ) 1213 ) # special 1214 [^\\\x80-\xff\n\015()] * # normal* 1215 )* # )* 1216 \) # ) 1217 [\040\t]* )* # If comment found, allow more spaces. 1218 (?: 1219 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1220 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1221 # Atom 1222 | # or 1223 " # " 1224 [^\\\x80-\xff\n\015"] * # normal 1225 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1226 " # " 1227 # Quoted string 1228 ) 1229 [\040\t]* # Nab whitespace. 1230 (?: 1231 \( # ( 1232 [^\\\x80-\xff\n\015()] * # normal* 1233 (?: # ( 1234 (?: \\ [^\x80-\xff] | 1235 \( # ( 1236 [^\\\x80-\xff\n\015()] * # normal* 1237 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1238 \) # ) 1239 ) # special 1240 [^\\\x80-\xff\n\015()] * # normal* 1241 )* # )* 1242 \) # ) 1243 [\040\t]* )* # If comment found, allow more spaces. 1244 # additional words 1245 )* 1246 @ 1247 [\040\t]* # Nab whitespace. 1248 (?: 1249 \( # ( 1250 [^\\\x80-\xff\n\015()] * # normal* 1251 (?: # ( 1252 (?: \\ [^\x80-\xff] | 1253 \( # ( 1254 [^\\\x80-\xff\n\015()] * # normal* 1255 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1256 \) # ) 1257 ) # special 1258 [^\\\x80-\xff\n\015()] * # normal* 1259 )* # )* 1260 \) # ) 1261 [\040\t]* )* # If comment found, allow more spaces. 1262 (?: 1263 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1264 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1265 | 1266 \[ # [ 1267 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1268 \] # ] 1269 ) 1270 [\040\t]* # Nab whitespace. 1271 (?: 1272 \( # ( 1273 [^\\\x80-\xff\n\015()] * # normal* 1274 (?: # ( 1275 (?: \\ [^\x80-\xff] | 1276 \( # ( 1277 [^\\\x80-\xff\n\015()] * # normal* 1278 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1279 \) # ) 1280 ) # special 1281 [^\\\x80-\xff\n\015()] * # normal* 1282 )* # )* 1283 \) # ) 1284 [\040\t]* )* # If comment found, allow more spaces. 1285 # optional trailing comments 1286 (?: 1287 \. 1288 [\040\t]* # Nab whitespace. 1289 (?: 1290 \( # ( 1291 [^\\\x80-\xff\n\015()] * # normal* 1292 (?: # ( 1293 (?: \\ [^\x80-\xff] | 1294 \( # ( 1295 [^\\\x80-\xff\n\015()] * # normal* 1296 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1297 \) # ) 1298 ) # special 1299 [^\\\x80-\xff\n\015()] * # normal* 1300 )* # )* 1301 \) # ) 1302 [\040\t]* )* # If comment found, allow more spaces. 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 | 1307 \[ # [ 1308 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1309 \] # ] 1310 ) 1311 [\040\t]* # Nab whitespace. 1312 (?: 1313 \( # ( 1314 [^\\\x80-\xff\n\015()] * # normal* 1315 (?: # ( 1316 (?: \\ [^\x80-\xff] | 1317 \( # ( 1318 [^\\\x80-\xff\n\015()] * # normal* 1319 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1320 \) # ) 1321 ) # special 1322 [^\\\x80-\xff\n\015()] * # normal* 1323 )* # )* 1324 \) # ) 1325 [\040\t]* )* # If comment found, allow more spaces. 1326 # optional trailing comments 1327 )* 1328 # address 1329 | # or 1330 (?: 1331 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1332 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1333 # Atom 1334 | # or 1335 " # " 1336 [^\\\x80-\xff\n\015"] * # normal 1337 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1338 " # " 1339 # Quoted string 1340 ) 1341 # leading word 1342 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # "normal" atoms and or spaces 1343 (?: 1344 (?: 1345 \( # ( 1346 [^\\\x80-\xff\n\015()] * # normal* 1347 (?: # ( 1348 (?: \\ [^\x80-\xff] | 1349 \( # ( 1350 [^\\\x80-\xff\n\015()] * # normal* 1351 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1352 \) # ) 1353 ) # special 1354 [^\\\x80-\xff\n\015()] * # normal* 1355 )* # )* 1356 \) # ) 1357 | 1358 " # " 1359 [^\\\x80-\xff\n\015"] * # normal 1360 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1361 " # " 1362 ) # "special" comment or quoted string 1363 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # more "normal" 1364 )* 1365 < 1366 [\040\t]* # Nab whitespace. 1367 (?: 1368 \( # ( 1369 [^\\\x80-\xff\n\015()] * # normal* 1370 (?: # ( 1371 (?: \\ [^\x80-\xff] | 1372 \( # ( 1373 [^\\\x80-\xff\n\015()] * # normal* 1374 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1375 \) # ) 1376 ) # special 1377 [^\\\x80-\xff\n\015()] * # normal* 1378 )* # )* 1379 \) # ) 1380 [\040\t]* )* # If comment found, allow more spaces. 1381 # < 1382 (?: 1383 @ 1384 [\040\t]* # Nab whitespace. 1385 (?: 1386 \( # ( 1387 [^\\\x80-\xff\n\015()] * # normal* 1388 (?: # ( 1389 (?: \\ [^\x80-\xff] | 1390 \( # ( 1391 [^\\\x80-\xff\n\015()] * # normal* 1392 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1393 \) # ) 1394 ) # special 1395 [^\\\x80-\xff\n\015()] * # normal* 1396 )* # )* 1397 \) # ) 1398 [\040\t]* )* # If comment found, allow more spaces. 1399 (?: 1400 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1401 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1402 | 1403 \[ # [ 1404 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1405 \] # ] 1406 ) 1407 [\040\t]* # Nab whitespace. 1408 (?: 1409 \( # ( 1410 [^\\\x80-\xff\n\015()] * # normal* 1411 (?: # ( 1412 (?: \\ [^\x80-\xff] | 1413 \( # ( 1414 [^\\\x80-\xff\n\015()] * # normal* 1415 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1416 \) # ) 1417 ) # special 1418 [^\\\x80-\xff\n\015()] * # normal* 1419 )* # )* 1420 \) # ) 1421 [\040\t]* )* # If comment found, allow more spaces. 1422 # optional trailing comments 1423 (?: 1424 \. 1425 [\040\t]* # Nab whitespace. 1426 (?: 1427 \( # ( 1428 [^\\\x80-\xff\n\015()] * # normal* 1429 (?: # ( 1430 (?: \\ [^\x80-\xff] | 1431 \( # ( 1432 [^\\\x80-\xff\n\015()] * # normal* 1433 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1434 \) # ) 1435 ) # special 1436 [^\\\x80-\xff\n\015()] * # normal* 1437 )* # )* 1438 \) # ) 1439 [\040\t]* )* # If comment found, allow more spaces. 1440 (?: 1441 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1442 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1443 | 1444 \[ # [ 1445 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1446 \] # ] 1447 ) 1448 [\040\t]* # Nab whitespace. 1449 (?: 1450 \( # ( 1451 [^\\\x80-\xff\n\015()] * # normal* 1452 (?: # ( 1453 (?: \\ [^\x80-\xff] | 1454 \( # ( 1455 [^\\\x80-\xff\n\015()] * # normal* 1456 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1457 \) # ) 1458 ) # special 1459 [^\\\x80-\xff\n\015()] * # normal* 1460 )* # )* 1461 \) # ) 1462 [\040\t]* )* # If comment found, allow more spaces. 1463 # optional trailing comments 1464 )* 1465 (?: , 1466 [\040\t]* # Nab whitespace. 1467 (?: 1468 \( # ( 1469 [^\\\x80-\xff\n\015()] * # normal* 1470 (?: # ( 1471 (?: \\ [^\x80-\xff] | 1472 \( # ( 1473 [^\\\x80-\xff\n\015()] * # normal* 1474 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1475 \) # ) 1476 ) # special 1477 [^\\\x80-\xff\n\015()] * # normal* 1478 )* # )* 1479 \) # ) 1480 [\040\t]* )* # If comment found, allow more spaces. 1481 @ 1482 [\040\t]* # Nab whitespace. 1483 (?: 1484 \( # ( 1485 [^\\\x80-\xff\n\015()] * # normal* 1486 (?: # ( 1487 (?: \\ [^\x80-\xff] | 1488 \( # ( 1489 [^\\\x80-\xff\n\015()] * # normal* 1490 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1491 \) # ) 1492 ) # special 1493 [^\\\x80-\xff\n\015()] * # normal* 1494 )* # )* 1495 \) # ) 1496 [\040\t]* )* # If comment found, allow more spaces. 1497 (?: 1498 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1499 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1500 | 1501 \[ # [ 1502 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1503 \] # ] 1504 ) 1505 [\040\t]* # Nab whitespace. 1506 (?: 1507 \( # ( 1508 [^\\\x80-\xff\n\015()] * # normal* 1509 (?: # ( 1510 (?: \\ [^\x80-\xff] | 1511 \( # ( 1512 [^\\\x80-\xff\n\015()] * # normal* 1513 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1514 \) # ) 1515 ) # special 1516 [^\\\x80-\xff\n\015()] * # normal* 1517 )* # )* 1518 \) # ) 1519 [\040\t]* )* # If comment found, allow more spaces. 1520 # optional trailing comments 1521 (?: 1522 \. 1523 [\040\t]* # Nab whitespace. 1524 (?: 1525 \( # ( 1526 [^\\\x80-\xff\n\015()] * # normal* 1527 (?: # ( 1528 (?: \\ [^\x80-\xff] | 1529 \( # ( 1530 [^\\\x80-\xff\n\015()] * # normal* 1531 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1532 \) # ) 1533 ) # special 1534 [^\\\x80-\xff\n\015()] * # normal* 1535 )* # )* 1536 \) # ) 1537 [\040\t]* )* # If comment found, allow more spaces. 1538 (?: 1539 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1540 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1541 | 1542 \[ # [ 1543 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1544 \] # ] 1545 ) 1546 [\040\t]* # Nab whitespace. 1547 (?: 1548 \( # ( 1549 [^\\\x80-\xff\n\015()] * # normal* 1550 (?: # ( 1551 (?: \\ [^\x80-\xff] | 1552 \( # ( 1553 [^\\\x80-\xff\n\015()] * # normal* 1554 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1555 \) # ) 1556 ) # special 1557 [^\\\x80-\xff\n\015()] * # normal* 1558 )* # )* 1559 \) # ) 1560 [\040\t]* )* # If comment found, allow more spaces. 1561 # optional trailing comments 1562 )* 1563 )* # additional domains 1564 : 1565 [\040\t]* # Nab whitespace. 1566 (?: 1567 \( # ( 1568 [^\\\x80-\xff\n\015()] * # normal* 1569 (?: # ( 1570 (?: \\ [^\x80-\xff] | 1571 \( # ( 1572 [^\\\x80-\xff\n\015()] * # normal* 1573 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1574 \) # ) 1575 ) # special 1576 [^\\\x80-\xff\n\015()] * # normal* 1577 )* # )* 1578 \) # ) 1579 [\040\t]* )* # If comment found, allow more spaces. 1580 # optional trailing comments 1581 )? # optional route 1582 (?: 1583 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1584 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1585 # Atom 1586 | # or 1587 " # " 1588 [^\\\x80-\xff\n\015"] * # normal 1589 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1590 " # " 1591 # Quoted string 1592 ) 1593 [\040\t]* # Nab whitespace. 1594 (?: 1595 \( # ( 1596 [^\\\x80-\xff\n\015()] * # normal* 1597 (?: # ( 1598 (?: \\ [^\x80-\xff] | 1599 \( # ( 1600 [^\\\x80-\xff\n\015()] * # normal* 1601 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1602 \) # ) 1603 ) # special 1604 [^\\\x80-\xff\n\015()] * # normal* 1605 )* # )* 1606 \) # ) 1607 [\040\t]* )* # If comment found, allow more spaces. 1608 (?: 1609 \. 1610 [\040\t]* # Nab whitespace. 1611 (?: 1612 \( # ( 1613 [^\\\x80-\xff\n\015()] * # normal* 1614 (?: # ( 1615 (?: \\ [^\x80-\xff] | 1616 \( # ( 1617 [^\\\x80-\xff\n\015()] * # normal* 1618 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1619 \) # ) 1620 ) # special 1621 [^\\\x80-\xff\n\015()] * # normal* 1622 )* # )* 1623 \) # ) 1624 [\040\t]* )* # If comment found, allow more spaces. 1625 (?: 1626 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1627 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1628 # Atom 1629 | # or 1630 " # " 1631 [^\\\x80-\xff\n\015"] * # normal 1632 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1633 " # " 1634 # Quoted string 1635 ) 1636 [\040\t]* # Nab whitespace. 1637 (?: 1638 \( # ( 1639 [^\\\x80-\xff\n\015()] * # normal* 1640 (?: # ( 1641 (?: \\ [^\x80-\xff] | 1642 \( # ( 1643 [^\\\x80-\xff\n\015()] * # normal* 1644 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1645 \) # ) 1646 ) # special 1647 [^\\\x80-\xff\n\015()] * # normal* 1648 )* # )* 1649 \) # ) 1650 [\040\t]* )* # If comment found, allow more spaces. 1651 # additional words 1652 )* 1653 @ 1654 [\040\t]* # Nab whitespace. 1655 (?: 1656 \( # ( 1657 [^\\\x80-\xff\n\015()] * # normal* 1658 (?: # ( 1659 (?: \\ [^\x80-\xff] | 1660 \( # ( 1661 [^\\\x80-\xff\n\015()] * # normal* 1662 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1663 \) # ) 1664 ) # special 1665 [^\\\x80-\xff\n\015()] * # normal* 1666 )* # )* 1667 \) # ) 1668 [\040\t]* )* # If comment found, allow more spaces. 1669 (?: 1670 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1671 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1672 | 1673 \[ # [ 1674 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1675 \] # ] 1676 ) 1677 [\040\t]* # Nab whitespace. 1678 (?: 1679 \( # ( 1680 [^\\\x80-\xff\n\015()] * # normal* 1681 (?: # ( 1682 (?: \\ [^\x80-\xff] | 1683 \( # ( 1684 [^\\\x80-\xff\n\015()] * # normal* 1685 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1686 \) # ) 1687 ) # special 1688 [^\\\x80-\xff\n\015()] * # normal* 1689 )* # )* 1690 \) # ) 1691 [\040\t]* )* # If comment found, allow more spaces. 1692 # optional trailing comments 1693 (?: 1694 \. 1695 [\040\t]* # Nab whitespace. 1696 (?: 1697 \( # ( 1698 [^\\\x80-\xff\n\015()] * # normal* 1699 (?: # ( 1700 (?: \\ [^\x80-\xff] | 1701 \( # ( 1702 [^\\\x80-\xff\n\015()] * # normal* 1703 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1704 \) # ) 1705 ) # special 1706 [^\\\x80-\xff\n\015()] * # normal* 1707 )* # )* 1708 \) # ) 1709 [\040\t]* )* # If comment found, allow more spaces. 1710 (?: 1711 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1712 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1713 | 1714 \[ # [ 1715 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1716 \] # ] 1717 ) 1718 [\040\t]* # Nab whitespace. 1719 (?: 1720 \( # ( 1721 [^\\\x80-\xff\n\015()] * # normal* 1722 (?: # ( 1723 (?: \\ [^\x80-\xff] | 1724 \( # ( 1725 [^\\\x80-\xff\n\015()] * # normal* 1726 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1727 \) # ) 1728 ) # special 1729 [^\\\x80-\xff\n\015()] * # normal* 1730 )* # )* 1731 \) # ) 1732 [\040\t]* )* # If comment found, allow more spaces. 1733 # optional trailing comments 1734 )* 1735 # address spec 1736 > # > 1737 # name and address 1738 ) 1739 /x 1740 Alan Other <user\@dom.ain> 1741 0: Alan Other <user (a] dom.ain> 1742 <user\@dom.ain> 1743 0: user (a] dom.ain 1744 user\@dom.ain 1745 0: user (a] dom.ain 1746 \"A. Other\" <user.1234\@dom.ain> (a comment) 1747 0: "A. Other" <user.1234 (a] dom.ain> 1748 A. Other <user.1234\@dom.ain> (a comment) 1749 0: Other <user.1234 (a] dom.ain> 1750 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 1751 0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay 1752 A missing angle <user\@some.where 1753 0: user (a] some.where 1754 *** Failers 1755 No match 1756 The quick brown fox 1757 No match 1758 1759 /abc\0def\00pqr\000xyz\0000AB/ 1760 abc\0def\00pqr\000xyz\0000AB 1761 0: abc\x00def\x00pqr\x00xyz\x000AB 1762 abc456 abc\0def\00pqr\000xyz\0000ABCDE 1763 0: abc\x00def\x00pqr\x00xyz\x000AB 1764 1765 /abc\x0def\x00pqr\x000xyz\x0000AB/ 1766 abc\x0def\x00pqr\x000xyz\x0000AB 1767 0: abc\x0def\x00pqr\x000xyz\x0000AB 1768 abc456 abc\x0def\x00pqr\x000xyz\x0000ABCDE 1769 0: abc\x0def\x00pqr\x000xyz\x0000AB 1770 1771 /^[\000-\037]/ 1772 \0A 1773 0: \x00 1774 \01B 1775 0: \x01 1776 \037C 1777 0: \x1f 1778 1779 /\0*/ 1780 \0\0\0\0 1781 0: \x00\x00\x00\x00 1782 1783 /A\x0{2,3}Z/ 1784 The A\x0\x0Z 1785 0: A\x00\x00Z 1786 An A\0\x0\0Z 1787 0: A\x00\x00\x00Z 1788 *** Failers 1789 No match 1790 A\0Z 1791 No match 1792 A\0\x0\0\x0Z 1793 No match 1794 1795 /^(cow|)\1(bell)/ 1796 cowcowbell 1797 0: cowcowbell 1798 1: cow 1799 2: bell 1800 bell 1801 0: bell 1802 1: 1803 2: bell 1804 *** Failers 1805 No match 1806 cowbell 1807 No match 1808 1809 /^\s/ 1810 \040abc 1811 0: 1812 \x0cabc 1813 0: \x0c 1814 \nabc 1815 0: \x0a 1816 \rabc 1817 0: \x0d 1818 \tabc 1819 0: \x09 1820 *** Failers 1821 No match 1822 abc 1823 No match 1824 1825 /^a b 1826 c/x 1828 abc 1829 0: abc 1830 1831 /^(a|)\1*b/ 1832 ab 1833 0: ab 1834 1: a 1835 aaaab 1836 0: aaaab 1837 1: a 1838 b 1839 0: b 1840 1: 1841 *** Failers 1842 No match 1843 acb 1844 No match 1845 1846 /^(a|)\1+b/ 1847 aab 1848 0: aab 1849 1: a 1850 aaaab 1851 0: aaaab 1852 1: a 1853 b 1854 0: b 1855 1: 1856 *** Failers 1857 No match 1858 ab 1859 No match 1860 1861 /^(a|)\1?b/ 1862 ab 1863 0: ab 1864 1: a 1865 aab 1866 0: aab 1867 1: a 1868 b 1869 0: b 1870 1: 1871 *** Failers 1872 No match 1873 acb 1874 No match 1875 1876 /^(a|)\1{2}b/ 1877 aaab 1878 0: aaab 1879 1: a 1880 b 1881 0: b 1882 1: 1883 *** Failers 1884 No match 1885 ab 1886 No match 1887 aab 1888 No match 1889 aaaab 1890 No match 1891 1892 /^(a|)\1{2,3}b/ 1893 aaab 1894 0: aaab 1895 1: a 1896 aaaab 1897 0: aaaab 1898 1: a 1899 b 1900 0: b 1901 1: 1902 *** Failers 1903 No match 1904 ab 1905 No match 1906 aab 1907 No match 1908 aaaaab 1909 No match 1910 1911 /ab{1,3}bc/ 1912 abbbbc 1913 0: abbbbc 1914 abbbc 1915 0: abbbc 1916 abbc 1917 0: abbc 1918 *** Failers 1919 No match 1920 abc 1921 No match 1922 abbbbbc 1923 No match 1924 1925 /([^.]*)\.([^:]*):[T ]+(.*)/ 1926 track1.title:TBlah blah blah 1927 0: track1.title:TBlah blah blah 1928 1: track1 1929 2: title 1930 3: Blah blah blah 1931 1932 /([^.]*)\.([^:]*):[T ]+(.*)/i 1933 track1.title:TBlah blah blah 1934 0: track1.title:TBlah blah blah 1935 1: track1 1936 2: title 1937 3: Blah blah blah 1938 1939 /([^.]*)\.([^:]*):[t ]+(.*)/i 1940 track1.title:TBlah blah blah 1941 0: track1.title:TBlah blah blah 1942 1: track1 1943 2: title 1944 3: Blah blah blah 1945 1946 /^[W-c]+$/ 1947 WXY_^abc 1948 0: WXY_^abc 1949 *** Failers 1950 No match 1951 wxy 1952 No match 1953 1954 /^[W-c]+$/i 1955 WXY_^abc 1956 0: WXY_^abc 1957 wxy_^ABC 1958 0: wxy_^ABC 1959 1960 /^[\x3f-\x5F]+$/i 1961 WXY_^abc 1962 0: WXY_^abc 1963 wxy_^ABC 1964 0: wxy_^ABC 1965 1966 /^abc$/m 1967 abc 1968 0: abc 1969 qqq\nabc 1970 0: abc 1971 abc\nzzz 1972 0: abc 1973 qqq\nabc\nzzz 1974 0: abc 1975 1976 /^abc$/ 1977 abc 1978 0: abc 1979 *** Failers 1980 No match 1981 qqq\nabc 1982 No match 1983 abc\nzzz 1984 No match 1985 qqq\nabc\nzzz 1986 No match 1987 1988 /\Aabc\Z/m 1989 abc 1990 0: abc 1991 abc\n 1992 0: abc 1993 *** Failers 1994 No match 1995 qqq\nabc 1996 No match 1997 abc\nzzz 1998 No match 1999 qqq\nabc\nzzz 2000 No match 2001 2002 /\A(.)*\Z/s 2003 abc\ndef 2004 0: abc\x0adef 2005 1: f 2006 2007 /\A(.)*\Z/m 2008 *** Failers 2009 0: *** Failers 2010 1: s 2011 abc\ndef 2012 No match 2013 2014 /(?:b)|(?::+)/ 2015 b::c 2016 0: b 2017 c::b 2018 0: :: 2019 2020 /[-az]+/ 2021 az- 2022 0: az- 2023 *** Failers 2024 0: a 2025 b 2026 No match 2027 2028 /[az-]+/ 2029 za- 2030 0: za- 2031 *** Failers 2032 0: a 2033 b 2034 No match 2035 2036 /[a\-z]+/ 2037 a-z 2038 0: a-z 2039 *** Failers 2040 0: a 2041 b 2042 No match 2043 2044 /[a-z]+/ 2045 abcdxyz 2046 0: abcdxyz 2047 2048 /[\d-]+/ 2049 12-34 2050 0: 12-34 2051 *** Failers 2052 No match 2053 aaa 2054 No match 2055 2056 /[\d-z]+/ 2057 12-34z 2058 0: 12-34z 2059 *** Failers 2060 No match 2061 aaa 2062 No match 2063 2064 /\x5c/ 2065 \\ 2066 0: \ 2067 2068 /\x20Z/ 2069 the Zoo 2070 0: Z 2071 *** Failers 2072 No match 2073 Zulu 2074 No match 2075 2076 /(abc)\1/i 2077 abcabc 2078 0: abcabc 2079 1: abc 2080 ABCabc 2081 0: ABCabc 2082 1: ABC 2083 abcABC 2084 0: abcABC 2085 1: abc 2086 2087 /ab{3cd/ 2088 ab{3cd 2089 0: ab{3cd 2090 2091 /ab{3,cd/ 2092 ab{3,cd 2093 0: ab{3,cd 2094 2095 /ab{3,4a}cd/ 2096 ab{3,4a}cd 2097 0: ab{3,4a}cd 2098 2099 /{4,5a}bc/ 2100 {4,5a}bc 2101 0: {4,5a}bc 2102 2103 /abc$/ 2104 abc 2105 0: abc 2106 abc\n 2107 0: abc 2108 *** Failers 2109 No match 2110 abc\ndef 2111 No match 2112 2113 /(abc)\123/ 2114 abc\x53 2115 0: abcS 2116 1: abc 2117 2118 /(abc)\223/ 2119 abc\x93 2120 0: abc\x93 2121 1: abc 2122 2123 /(abc)\323/ 2124 abc\xd3 2125 0: abc\xd3 2126 1: abc 2127 2128 /(abc)\100/ 2129 abc\x40 2130 0: abc@ 2131 1: abc 2132 abc\100 2133 0: abc@ 2134 1: abc 2135 2136 /(abc)\1000/ 2137 abc\x400 2138 0: abc@0 2139 1: abc 2140 abc\x40\x30 2141 0: abc@0 2142 1: abc 2143 abc\1000 2144 0: abc@0 2145 1: abc 2146 abc\100\x30 2147 0: abc@0 2148 1: abc 2149 abc\100\060 2150 0: abc@0 2151 1: abc 2152 abc\100\60 2153 0: abc@0 2154 1: abc 2155 2156 /^A\8B\9C$/ 2157 A8B9C 2158 0: A8B9C 2159 *** Failers 2160 No match 2161 A\08B\09C 2162 No match 2163 2164 /^(A)(B)(C)(D)(E)(F)(G)(H)(I)\8\9$/ 2165 ABCDEFGHIHI 2166 0: ABCDEFGHIHI 2167 1: A 2168 2: B 2169 3: C 2170 4: D 2171 5: E 2172 6: F 2173 7: G 2174 8: H 2175 9: I 2176 2177 /^[A\8B\9C]+$/ 2178 A8B9C 2179 0: A8B9C 2180 *** Failers 2181 No match 2182 A8B9C\x00 2183 No match 2184 2185 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\12\123/ 2186 abcdefghijkllS 2187 0: abcdefghijkllS 2188 1: a 2189 2: b 2190 3: c 2191 4: d 2192 5: e 2193 6: f 2194 7: g 2195 8: h 2196 9: i 2197 10: j 2198 11: k 2199 12: l 2200 2201 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12\123/ 2202 abcdefghijk\12S 2203 0: abcdefghijk\x0aS 2204 1: a 2205 2: b 2206 3: c 2207 4: d 2208 5: e 2209 6: f 2210 7: g 2211 8: h 2212 9: i 2213 10: j 2214 11: k 2215 2216 /ab\idef/ 2217 abidef 2218 0: abidef 2219 2220 /a{0}bc/ 2221 bc 2222 0: bc 2223 2224 /(a|(bc)){0,0}?xyz/ 2225 xyz 2226 0: xyz 2227 2228 /abc[\10]de/ 2229 abc\010de 2230 0: abc\x08de 2231 2232 /abc[\1]de/ 2233 abc\1de 2234 0: abc\x01de 2235 2236 /(abc)[\1]de/ 2237 abc\1de 2238 0: abc\x01de 2239 1: abc 2240 2241 /(?s)a.b/ 2242 a\nb 2243 0: a\x0ab 2244 2245 /^([^a])([^\b])([^c]*)([^d]{3,4})/ 2246 baNOTccccd 2247 0: baNOTcccc 2248 1: b 2249 2: a 2250 3: NOT 2251 4: cccc 2252 baNOTcccd 2253 0: baNOTccc 2254 1: b 2255 2: a 2256 3: NOT 2257 4: ccc 2258 baNOTccd 2259 0: baNOTcc 2260 1: b 2261 2: a 2262 3: NO 2263 4: Tcc 2264 bacccd 2265 0: baccc 2266 1: b 2267 2: a 2268 3: 2269 4: ccc 2270 *** Failers 2271 0: *** Failers 2272 1: * 2273 2: * 2274 3: * Fail 2275 4: ers 2276 anything 2277 No match 2278 b\bc 2279 No match 2280 baccd 2281 No match 2282 2283 /[^a]/ 2284 Abc 2285 0: A 2286 2287 /[^a]/i 2288 Abc 2289 0: b 2290 2291 /[^a]+/ 2292 AAAaAbc 2293 0: AAA 2294 2295 /[^a]+/i 2296 AAAaAbc 2297 0: bc 2298 2299 /[^a]+/ 2300 bbb\nccc 2301 0: bbb\x0accc 2302 2303 /[^k]$/ 2304 abc 2305 0: c 2306 *** Failers 2307 0: s 2308 abk 2309 No match 2310 2311 /[^k]{2,3}$/ 2312 abc 2313 0: abc 2314 kbc 2315 0: bc 2316 kabc 2317 0: abc 2318 *** Failers 2319 0: ers 2320 abk 2321 No match 2322 akb 2323 No match 2324 akk 2325 No match 2326 2327 /^\d{8,}\@.+[^k]$/ 2328 12345678\@a.b.c.d 2329 0: 12345678 (a] a.b.c.d 2330 123456789\@x.y.z 2331 0: 123456789 (a] x.y.z 2332 *** Failers 2333 No match 2334 12345678\@x.y.uk 2335 No match 2336 1234567\@a.b.c.d 2337 No match 2338 2339 /(a)\1{8,}/ 2340 aaaaaaaaa 2341 0: aaaaaaaaa 2342 1: a 2343 aaaaaaaaaa 2344 0: aaaaaaaaaa 2345 1: a 2346 *** Failers 2347 No match 2348 aaaaaaa 2349 No match 2350 2351 /[^a]/ 2352 aaaabcd 2353 0: b 2354 aaAabcd 2355 0: A 2356 2357 /[^a]/i 2358 aaaabcd 2359 0: b 2360 aaAabcd 2361 0: b 2362 2363 /[^az]/ 2364 aaaabcd 2365 0: b 2366 aaAabcd 2367 0: A 2368 2369 /[^az]/i 2370 aaaabcd 2371 0: b 2372 aaAabcd 2373 0: b 2374 2375 /\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/ 2376 \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 2377 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 2378 2379 /P[^*]TAIRE[^*]{1,6}?LL/ 2380 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 2381 0: PSTAIREISLL 2382 2383 /P[^*]TAIRE[^*]{1,}?LL/ 2384 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 2385 0: PSTAIREISLL 2386 2387 /(\.\d\d[1-9]?)\d+/ 2388 1.230003938 2389 0: .230003938 2390 1: .23 2391 1.875000282 2392 0: .875000282 2393 1: .875 2394 1.235 2395 0: .235 2396 1: .23 2397 2398 /(\.\d\d((?=0)|\d(?=\d)))/ 2399 1.230003938 2400 0: .23 2401 1: .23 2402 2: 2403 1.875000282 2404 0: .875 2405 1: .875 2406 2: 5 2407 *** Failers 2408 No match 2409 1.235 2410 No match 2411 2412 /a(?)b/ 2413 ab 2414 0: ab 2415 2416 /\b(foo)\s+(\w+)/i 2417 Food is on the foo table 2418 0: foo table 2419 1: foo 2420 2: table 2421 2422 /foo(.*)bar/ 2423 The food is under the bar in the barn. 2424 0: food is under the bar in the bar 2425 1: d is under the bar in the 2426 2427 /foo(.*?)bar/ 2428 The food is under the bar in the barn. 2429 0: food is under the bar 2430 1: d is under the 2431 2432 /(.*)(\d*)/ 2433 I have 2 numbers: 53147 2434 0: I have 2 numbers: 53147 2435 1: I have 2 numbers: 53147 2436 2: 2437 2438 /(.*)(\d+)/ 2439 I have 2 numbers: 53147 2440 0: I have 2 numbers: 53147 2441 1: I have 2 numbers: 5314 2442 2: 7 2443 2444 /(.*?)(\d*)/ 2445 I have 2 numbers: 53147 2446 0: 2447 1: 2448 2: 2449 2450 /(.*?)(\d+)/ 2451 I have 2 numbers: 53147 2452 0: I have 2 2453 1: I have 2454 2: 2 2455 2456 /(.*)(\d+)$/ 2457 I have 2 numbers: 53147 2458 0: I have 2 numbers: 53147 2459 1: I have 2 numbers: 5314 2460 2: 7 2461 2462 /(.*?)(\d+)$/ 2463 I have 2 numbers: 53147 2464 0: I have 2 numbers: 53147 2465 1: I have 2 numbers: 2466 2: 53147 2467 2468 /(.*)\b(\d+)$/ 2469 I have 2 numbers: 53147 2470 0: I have 2 numbers: 53147 2471 1: I have 2 numbers: 2472 2: 53147 2473 2474 /(.*\D)(\d+)$/ 2475 I have 2 numbers: 53147 2476 0: I have 2 numbers: 53147 2477 1: I have 2 numbers: 2478 2: 53147 2479 2480 /^\D*(?!123)/ 2481 ABC123 2482 0: AB 2483 2484 /^(\D*)(?=\d)(?!123)/ 2485 ABC445 2486 0: ABC 2487 1: ABC 2488 *** Failers 2489 No match 2490 ABC123 2491 No match 2492 2493 /^[W-]46]/ 2494 W46]789 2495 0: W46] 2496 -46]789 2497 0: -46] 2498 *** Failers 2499 No match 2500 Wall 2501 No match 2502 Zebra 2503 No match 2504 42 2505 No match 2506 [abcd] 2507 No match 2508 ]abcd[ 2509 No match 2510 2511 /^[W-\]46]/ 2512 W46]789 2513 0: W 2514 Wall 2515 0: W 2516 Zebra 2517 0: Z 2518 Xylophone 2519 0: X 2520 42 2521 0: 4 2522 [abcd] 2523 0: [ 2524 ]abcd[ 2525 0: ] 2526 \\backslash 2527 0: \ 2528 *** Failers 2529 No match 2530 -46]789 2531 No match 2532 well 2533 No match 2534 2535 /\d\d\/\d\d\/\d\d\d\d/ 2536 01/01/2000 2537 0: 01/01/2000 2538 2539 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/ 2540 word cat dog elephant mussel cow horse canary baboon snake shark otherword 2541 0: word cat dog elephant mussel cow horse canary baboon snake shark otherword 2542 word cat dog elephant mussel cow horse canary baboon snake shark 2543 No match 2544 2545 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/ 2546 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 2547 No match 2548 2549 /^(a){0,0}/ 2550 bcd 2551 0: 2552 abc 2553 0: 2554 aab 2555 0: 2556 2557 /^(a){0,1}/ 2558 bcd 2559 0: 2560 abc 2561 0: a 2562 1: a 2563 aab 2564 0: a 2565 1: a 2566 2567 /^(a){0,2}/ 2568 bcd 2569 0: 2570 abc 2571 0: a 2572 1: a 2573 aab 2574 0: aa 2575 1: a 2576 2577 /^(a){0,3}/ 2578 bcd 2579 0: 2580 abc 2581 0: a 2582 1: a 2583 aab 2584 0: aa 2585 1: a 2586 aaa 2587 0: aaa 2588 1: a 2589 2590 /^(a){0,}/ 2591 bcd 2592 0: 2593 abc 2594 0: a 2595 1: a 2596 aab 2597 0: aa 2598 1: a 2599 aaa 2600 0: aaa 2601 1: a 2602 aaaaaaaa 2603 0: aaaaaaaa 2604 1: a 2605 2606 /^(a){1,1}/ 2607 bcd 2608 No match 2609 abc 2610 0: a 2611 1: a 2612 aab 2613 0: a 2614 1: a 2615 2616 /^(a){1,2}/ 2617 bcd 2618 No match 2619 abc 2620 0: a 2621 1: a 2622 aab 2623 0: aa 2624 1: a 2625 2626 /^(a){1,3}/ 2627 bcd 2628 No match 2629 abc 2630 0: a 2631 1: a 2632 aab 2633 0: aa 2634 1: a 2635 aaa 2636 0: aaa 2637 1: a 2638 2639 /^(a){1,}/ 2640 bcd 2641 No match 2642 abc 2643 0: a 2644 1: a 2645 aab 2646 0: aa 2647 1: a 2648 aaa 2649 0: aaa 2650 1: a 2651 aaaaaaaa 2652 0: aaaaaaaa 2653 1: a 2654 2655 /.*\.gif/ 2656 borfle\nbib.gif\nno 2657 0: bib.gif 2658 2659 /.{0,}\.gif/ 2660 borfle\nbib.gif\nno 2661 0: bib.gif 2662 2663 /.*\.gif/m 2664 borfle\nbib.gif\nno 2665 0: bib.gif 2666 2667 /.*\.gif/s 2668 borfle\nbib.gif\nno 2669 0: borfle\x0abib.gif 2670 2671 /.*\.gif/ms 2672 borfle\nbib.gif\nno 2673 0: borfle\x0abib.gif 2674 2675 /.*$/ 2676 borfle\nbib.gif\nno 2677 0: no 2678 2679 /.*$/m 2680 borfle\nbib.gif\nno 2681 0: borfle 2682 2683 /.*$/s 2684 borfle\nbib.gif\nno 2685 0: borfle\x0abib.gif\x0ano 2686 2687 /.*$/ms 2688 borfle\nbib.gif\nno 2689 0: borfle\x0abib.gif\x0ano 2690 2691 /.*$/ 2692 borfle\nbib.gif\nno\n 2693 0: no 2694 2695 /.*$/m 2696 borfle\nbib.gif\nno\n 2697 0: borfle 2698 2699 /.*$/s 2700 borfle\nbib.gif\nno\n 2701 0: borfle\x0abib.gif\x0ano\x0a 2702 2703 /.*$/ms 2704 borfle\nbib.gif\nno\n 2705 0: borfle\x0abib.gif\x0ano\x0a 2706 2707 /(.*X|^B)/ 2708 abcde\n1234Xyz 2709 0: 1234X 2710 1: 1234X 2711 BarFoo 2712 0: B 2713 1: B 2714 *** Failers 2715 No match 2716 abcde\nBar 2717 No match 2718 2719 /(.*X|^B)/m 2720 abcde\n1234Xyz 2721 0: 1234X 2722 1: 1234X 2723 BarFoo 2724 0: B 2725 1: B 2726 abcde\nBar 2727 0: B 2728 1: B 2729 2730 /(.*X|^B)/s 2731 abcde\n1234Xyz 2732 0: abcde\x0a1234X 2733 1: abcde\x0a1234X 2734 BarFoo 2735 0: B 2736 1: B 2737 *** Failers 2738 No match 2739 abcde\nBar 2740 No match 2741 2742 /(.*X|^B)/ms 2743 abcde\n1234Xyz 2744 0: abcde\x0a1234X 2745 1: abcde\x0a1234X 2746 BarFoo 2747 0: B 2748 1: B 2749 abcde\nBar 2750 0: B 2751 1: B 2752 2753 /(?s)(.*X|^B)/ 2754 abcde\n1234Xyz 2755 0: abcde\x0a1234X 2756 1: abcde\x0a1234X 2757 BarFoo 2758 0: B 2759 1: B 2760 *** Failers 2761 No match 2762 abcde\nBar 2763 No match 2764 2765 /(?s:.*X|^B)/ 2766 abcde\n1234Xyz 2767 0: abcde\x0a1234X 2768 BarFoo 2769 0: B 2770 *** Failers 2771 No match 2772 abcde\nBar 2773 No match 2774 2775 /^.*B/ 2776 **** Failers 2777 No match 2778 abc\nB 2779 No match 2780 2781 /(?s)^.*B/ 2782 abc\nB 2783 0: abc\x0aB 2784 2785 /(?m)^.*B/ 2786 abc\nB 2787 0: B 2788 2789 /(?ms)^.*B/ 2790 abc\nB 2791 0: abc\x0aB 2792 2793 /(?ms)^B/ 2794 abc\nB 2795 0: B 2796 2797 /(?s)B$/ 2798 B\n 2799 0: B 2800 2801 /^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/ 2802 123456654321 2803 0: 123456654321 2804 2805 /^\d\d\d\d\d\d\d\d\d\d\d\d/ 2806 123456654321 2807 0: 123456654321 2808 2809 /^[\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d]/ 2810 123456654321 2811 0: 123456654321 2812 2813 /^[abc]{12}/ 2814 abcabcabcabc 2815 0: abcabcabcabc 2816 2817 /^[a-c]{12}/ 2818 abcabcabcabc 2819 0: abcabcabcabc 2820 2821 /^(a|b|c){12}/ 2822 abcabcabcabc 2823 0: abcabcabcabc 2824 1: c 2825 2826 /^[abcdefghijklmnopqrstuvwxy0123456789]/ 2827 n 2828 0: n 2829 *** Failers 2830 No match 2831 z 2832 No match 2833 2834 /abcde{0,0}/ 2835 abcd 2836 0: abcd 2837 *** Failers 2838 No match 2839 abce 2840 No match 2841 2842 /ab[cd]{0,0}e/ 2843 abe 2844 0: abe 2845 *** Failers 2846 No match 2847 abcde 2848 No match 2849 2850 /ab(c){0,0}d/ 2851 abd 2852 0: abd 2853 *** Failers 2854 No match 2855 abcd 2856 No match 2857 2858 /a(b*)/ 2859 a 2860 0: a 2861 1: 2862 ab 2863 0: ab 2864 1: b 2865 abbbb 2866 0: abbbb 2867 1: bbbb 2868 *** Failers 2869 0: a 2870 1: 2871 bbbbb 2872 No match 2873 2874 /ab\d{0}e/ 2875 abe 2876 0: abe 2877 *** Failers 2878 No match 2879 ab1e 2880 No match 2881 2882 /"([^\\"]+|\\.)*"/ 2883 the \"quick\" brown fox 2884 0: "quick" 2885 1: quick 2886 \"the \\\"quick\\\" brown fox\" 2887 0: "the \"quick\" brown fox" 2888 1: brown fox 2889 2890 /.*?/g+ 2891 abc 2892 0: 2893 0+ abc 2894 0: a 2895 0+ bc 2896 0: 2897 0+ bc 2898 0: b 2899 0+ c 2900 0: 2901 0+ c 2902 0: c 2903 0+ 2904 0: 2905 0+ 2906 2907 /\b/g+ 2908 abc 2909 0: 2910 0+ abc 2911 0: 2912 0+ 2913 2914 /\b/+g 2915 abc 2916 0: 2917 0+ abc 2918 0: 2919 0+ 2920 2921 //g 2922 abc 2923 0: 2924 0: 2925 0: 2926 0: 2927 2928 /<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 2929 <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> 2930 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> 2931 1: BGCOLOR='#DBE9E9' 2932 2: align=left valign=top 2933 3: 43. 2934 4: <a href='joblist.cfm?JobID=94 6735&Keyword='>Word Processor<BR>(N-1286) 2935 5: 2936 6: 2937 7: <unset> 2938 8: align=left valign=top 2939 9: Lega lstaff.com 2940 10: align=left valign=top 2941 11: CA - Statewide 2942 2943 /a[^a]b/ 2944 acb 2945 0: acb 2946 a\nb 2947 0: a\x0ab 2948 2949 /a.b/ 2950 acb 2951 0: acb 2952 *** Failers 2953 No match 2954 a\nb 2955 No match 2956 2957 /a[^a]b/s 2958 acb 2959 0: acb 2960 a\nb 2961 0: a\x0ab 2962 2963 /a.b/s 2964 acb 2965 0: acb 2966 a\nb 2967 0: a\x0ab 2968 2969 /^(b+?|a){1,2}?c/ 2970 bac 2971 0: bac 2972 1: a 2973 bbac 2974 0: bbac 2975 1: a 2976 bbbac 2977 0: bbbac 2978 1: a 2979 bbbbac 2980 0: bbbbac 2981 1: a 2982 bbbbbac 2983 0: bbbbbac 2984 1: a 2985 2986 /^(b+|a){1,2}?c/ 2987 bac 2988 0: bac 2989 1: a 2990 bbac 2991 0: bbac 2992 1: a 2993 bbbac 2994 0: bbbac 2995 1: a 2996 bbbbac 2997 0: bbbbac 2998 1: a 2999 bbbbbac 3000 0: bbbbbac 3001 1: a 3002 3003 /(?!\A)x/m 3004 x\nb\n 3005 No match 3006 a\bx\n 3007 0: x 3008 3009 /\x0{ab}/ 3010 \0{ab} 3011 0: \x00{ab} 3012 3013 /(A|B)*?CD/ 3014 CD 3015 0: CD 3016 3017 /(A|B)*CD/ 3018 CD 3019 0: CD 3020 3021 /(AB)*?\1/ 3022 ABABAB 3023 0: ABAB 3024 1: AB 3025 3026 /(AB)*\1/ 3027 ABABAB 3028 0: ABABAB 3029 1: AB 3030 3031 /(?<!bar)foo/ 3032 foo 3033 0: foo 3034 catfood 3035 0: foo 3036 arfootle 3037 0: foo 3038 rfoosh 3039 0: foo 3040 *** Failers 3041 No match 3042 barfoo 3043 No match 3044 towbarfoo 3045 No match 3046 3047 /\w{3}(?<!bar)foo/ 3048 catfood 3049 0: catfoo 3050 *** Failers 3051 No match 3052 foo 3053 No match 3054 barfoo 3055 No match 3056 towbarfoo 3057 No match 3058 3059 /(?<=(foo)a)bar/ 3060 fooabar 3061 0: bar 3062 1: foo 3063 *** Failers 3064 No match 3065 bar 3066 No match 3067 foobbar 3068 No match 3069 3070 /\Aabc\z/m 3071 abc 3072 0: abc 3073 *** Failers 3074 No match 3075 abc\n 3076 No match 3077 qqq\nabc 3078 No match 3079 abc\nzzz 3080 No match 3081 qqq\nabc\nzzz 3082 No match 3083 3084 "(?>.*/)foo" 3085 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/ 3086 No match 3087 3088 "(?>.*/)foo" 3089 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo 3090 0: /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo 3091 3092 /(?>(\.\d\d[1-9]?))\d+/ 3093 1.230003938 3094 0: .230003938 3095 1: .23 3096 1.875000282 3097 0: .875000282 3098 1: .875 3099 *** Failers 3100 No match 3101 1.235 3102 No match 3103 3104 /^((?>\w+)|(?>\s+))*$/ 3105 now is the time for all good men to come to the aid of the party 3106 0: now is the time for all good men to come to the aid of the party 3107 1: party 3108 *** Failers 3109 No match 3110 this is not a line with only words and spaces! 3111 No match 3112 3113 /(\d+)(\w)/ 3114 12345a 3115 0: 12345a 3116 1: 12345 3117 2: a 3118 12345+ 3119 0: 12345 3120 1: 1234 3121 2: 5 3122 3123 /((?>\d+))(\w)/ 3124 12345a 3125 0: 12345a 3126 1: 12345 3127 2: a 3128 *** Failers 3129 No match 3130 12345+ 3131 No match 3132 3133 /(?>a+)b/ 3134 aaab 3135 0: aaab 3136 3137 /((?>a+)b)/ 3138 aaab 3139 0: aaab 3140 1: aaab 3141 3142 /(?>(a+))b/ 3143 aaab 3144 0: aaab 3145 1: aaa 3146 3147 /(?>b)+/ 3148 aaabbbccc 3149 0: bbb 3150 3151 /(?>a+|b+|c+)*c/ 3152 aaabbbbccccd 3153 0: aaabbbbc 3154 3155 /((?>[^()]+)|\([^()]*\))+/ 3156 ((abc(ade)ufh()()x 3157 0: abc(ade)ufh()()x 3158 1: x 3159 3160 /\(((?>[^()]+)|\([^()]+\))+\)/ 3161 (abc) 3162 0: (abc) 3163 1: abc 3164 (abc(def)xyz) 3165 0: (abc(def)xyz) 3166 1: xyz 3167 *** Failers 3168 No match 3169 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3170 No match 3171 3172 /a(?-i)b/i 3173 ab 3174 0: ab 3175 Ab 3176 0: Ab 3177 *** Failers 3178 No match 3179 aB 3180 No match 3181 AB 3182 No match 3183 3184 /(a (?x)b c)d e/ 3185 a bcd e 3186 0: a bcd e 3187 1: a bc 3188 *** Failers 3189 No match 3190 a b cd e 3191 No match 3192 abcd e 3193 No match 3194 a bcde 3195 No match 3196 3197 /(a b(?x)c d (?-x)e f)/ 3198 a bcde f 3199 0: a bcde f 3200 1: a bcde f 3201 *** Failers 3202 No match 3203 abcdef 3204 No match 3205 3206 /(a(?i)b)c/ 3207 abc 3208 0: abc 3209 1: ab 3210 aBc 3211 0: aBc 3212 1: aB 3213 *** Failers 3214 No match 3215 abC 3216 No match 3217 aBC 3218 No match 3219 Abc 3220 No match 3221 ABc 3222 No match 3223 ABC 3224 No match 3225 AbC 3226 No match 3227 3228 /a(?i:b)c/ 3229 abc 3230 0: abc 3231 aBc 3232 0: aBc 3233 *** Failers 3234 No match 3235 ABC 3236 No match 3237 abC 3238 No match 3239 aBC 3240 No match 3241 3242 /a(?i:b)*c/ 3243 aBc 3244 0: aBc 3245 aBBc 3246 0: aBBc 3247 *** Failers 3248 No match 3249 aBC 3250 No match 3251 aBBC 3252 No match 3253 3254 /a(?=b(?i)c)\w\wd/ 3255 abcd 3256 0: abcd 3257 abCd 3258 0: abCd 3259 *** Failers 3260 No match 3261 aBCd 3262 No match 3263 abcD 3264 No match 3265 3266 /(?s-i:more.*than).*million/i 3267 more than million 3268 0: more than million 3269 more than MILLION 3270 0: more than MILLION 3271 more \n than Million 3272 0: more \x0a than Million 3273 *** Failers 3274 No match 3275 MORE THAN MILLION 3276 No match 3277 more \n than \n million 3278 No match 3279 3280 /(?:(?s-i)more.*than).*million/i 3281 more than million 3282 0: more than million 3283 more than MILLION 3284 0: more than MILLION 3285 more \n than Million 3286 0: more \x0a than Million 3287 *** Failers 3288 No match 3289 MORE THAN MILLION 3290 No match 3291 more \n than \n million 3292 No match 3293 3294 /(?>a(?i)b+)+c/ 3295 abc 3296 0: abc 3297 aBbc 3298 0: aBbc 3299 aBBc 3300 0: aBBc 3301 *** Failers 3302 No match 3303 Abc 3304 No match 3305 abAb 3306 No match 3307 abbC 3308 No match 3309 3310 /(?=a(?i)b)\w\wc/ 3311 abc 3312 0: abc 3313 aBc 3314 0: aBc 3315 *** Failers 3316 No match 3317 Ab 3318 No match 3319 abC 3320 No match 3321 aBC 3322 No match 3323 3324 /(?<=a(?i)b)(\w\w)c/ 3325 abxxc 3326 0: xxc 3327 1: xx 3328 aBxxc 3329 0: xxc 3330 1: xx 3331 *** Failers 3332 No match 3333 Abxxc 3334 No match 3335 ABxxc 3336 No match 3337 abxxC 3338 No match 3339 3340 /(?:(a)|b)(?(1)A|B)/ 3341 aA 3342 0: aA 3343 1: a 3344 bB 3345 0: bB 3346 *** Failers 3347 No match 3348 aB 3349 No match 3350 bA 3351 No match 3352 3353 /^(a)?(?(1)a|b)+$/ 3354 aa 3355 0: aa 3356 1: a 3357 b 3358 0: b 3359 bb 3360 0: bb 3361 *** Failers 3362 No match 3363 ab 3364 No match 3365 3366 /^(?(?=abc)\w{3}:|\d\d)$/ 3367 abc: 3368 0: abc: 3369 12 3370 0: 12 3371 *** Failers 3372 No match 3373 123 3374 No match 3375 xyz 3376 No match 3377 3378 /^(?(?!abc)\d\d|\w{3}:)$/ 3379 abc: 3380 0: abc: 3381 12 3382 0: 12 3383 *** Failers 3384 No match 3385 123 3386 No match 3387 xyz 3388 No match 3389 3390 /(?(?<=foo)bar|cat)/ 3391 foobar 3392 0: bar 3393 cat 3394 0: cat 3395 fcat 3396 0: cat 3397 focat 3398 0: cat 3399 *** Failers 3400 No match 3401 foocat 3402 No match 3403 3404 /(?(?<!foo)cat|bar)/ 3405 foobar 3406 0: bar 3407 cat 3408 0: cat 3409 fcat 3410 0: cat 3411 focat 3412 0: cat 3413 *** Failers 3414 No match 3415 foocat 3416 No match 3417 3418 /( \( )? [^()]+ (?(1) \) |) /x 3419 abcd 3420 0: abcd 3421 (abcd) 3422 0: (abcd) 3423 1: ( 3424 the quick (abcd) fox 3425 0: the quick 3426 (abcd 3427 0: abcd 3428 3429 /( \( )? [^()]+ (?(1) \) ) /x 3430 abcd 3431 0: abcd 3432 (abcd) 3433 0: (abcd) 3434 1: ( 3435 the quick (abcd) fox 3436 0: the quick 3437 (abcd 3438 0: abcd 3439 3440 /^(?(2)a|(1)(2))+$/ 3441 12 3442 0: 12 3443 1: 1 3444 2: 2 3445 12a 3446 0: 12a 3447 1: 1 3448 2: 2 3449 12aa 3450 0: 12aa 3451 1: 1 3452 2: 2 3453 *** Failers 3454 No match 3455 1234 3456 No match 3457 3458 /((?i)blah)\s+\1/ 3459 blah blah 3460 0: blah blah 3461 1: blah 3462 BLAH BLAH 3463 0: BLAH BLAH 3464 1: BLAH 3465 Blah Blah 3466 0: Blah Blah 3467 1: Blah 3468 blaH blaH 3469 0: blaH blaH 3470 1: blaH 3471 *** Failers 3472 No match 3473 blah BLAH 3474 No match 3475 Blah blah 3476 No match 3477 blaH blah 3478 No match 3479 3480 /((?i)blah)\s+(?i:\1)/ 3481 blah blah 3482 0: blah blah 3483 1: blah 3484 BLAH BLAH 3485 0: BLAH BLAH 3486 1: BLAH 3487 Blah Blah 3488 0: Blah Blah 3489 1: Blah 3490 blaH blaH 3491 0: blaH blaH 3492 1: blaH 3493 blah BLAH 3494 0: blah BLAH 3495 1: blah 3496 Blah blah 3497 0: Blah blah 3498 1: Blah 3499 blaH blah 3500 0: blaH blah 3501 1: blaH 3502 3503 /(?>a*)*/ 3504 a 3505 0: a 3506 aa 3507 0: aa 3508 aaaa 3509 0: aaaa 3510 3511 /(abc|)+/ 3512 abc 3513 0: abc 3514 1: 3515 abcabc 3516 0: abcabc 3517 1: 3518 abcabcabc 3519 0: abcabcabc 3520 1: 3521 xyz 3522 0: 3523 1: 3524 3525 /([a]*)*/ 3526 a 3527 0: a 3528 1: 3529 aaaaa 3530 0: aaaaa 3531 1: 3532 3533 /([ab]*)*/ 3534 a 3535 0: a 3536 1: 3537 b 3538 0: b 3539 1: 3540 ababab 3541 0: ababab 3542 1: 3543 aaaabcde 3544 0: aaaab 3545 1: 3546 bbbb 3547 0: bbbb 3548 1: 3549 3550 /([^a]*)*/ 3551 b 3552 0: b 3553 1: 3554 bbbb 3555 0: bbbb 3556 1: 3557 aaa 3558 0: 3559 1: 3560 3561 /([^ab]*)*/ 3562 cccc 3563 0: cccc 3564 1: 3565 abab 3566 0: 3567 1: 3568 3569 /([a]*?)*/ 3570 a 3571 0: 3572 1: 3573 aaaa 3574 0: 3575 1: 3576 3577 /([ab]*?)*/ 3578 a 3579 0: 3580 1: 3581 b 3582 0: 3583 1: 3584 abab 3585 0: 3586 1: 3587 baba 3588 0: 3589 1: 3590 3591 /([^a]*?)*/ 3592 b 3593 0: 3594 1: 3595 bbbb 3596 0: 3597 1: 3598 aaa 3599 0: 3600 1: 3601 3602 /([^ab]*?)*/ 3603 c 3604 0: 3605 1: 3606 cccc 3607 0: 3608 1: 3609 baba 3610 0: 3611 1: 3612 3613 /(?>a*)*/ 3614 a 3615 0: a 3616 aaabcde 3617 0: aaa 3618 3619 /((?>a*))*/ 3620 aaaaa 3621 0: aaaaa 3622 1: 3623 aabbaa 3624 0: aa 3625 1: 3626 3627 /((?>a*?))*/ 3628 aaaaa 3629 0: 3630 1: 3631 aabbaa 3632 0: 3633 1: 3634 3635 /(?(?=[^a-z]+[a-z]) \d{2}-[a-z]{3}-\d{2} | \d{2}-\d{2}-\d{2} ) /x 3636 12-sep-98 3637 0: 12-sep-98 3638 12-09-98 3639 0: 12-09-98 3640 *** Failers 3641 No match 3642 sep-12-98 3643 No match 3644 3645 /(?<=(foo))bar\1/ 3646 foobarfoo 3647 0: barfoo 3648 1: foo 3649 foobarfootling 3650 0: barfoo 3651 1: foo 3652 *** Failers 3653 No match 3654 foobar 3655 No match 3656 barfoo 3657 No match 3658 3659 /(?i:saturday|sunday)/ 3660 saturday 3661 0: saturday 3662 sunday 3663 0: sunday 3664 Saturday 3665 0: Saturday 3666 Sunday 3667 0: Sunday 3668 SATURDAY 3669 0: SATURDAY 3670 SUNDAY 3671 0: SUNDAY 3672 SunDay 3673 0: SunDay 3674 3675 /(a(?i)bc|BB)x/ 3676 abcx 3677 0: abcx 3678 1: abc 3679 aBCx 3680 0: aBCx 3681 1: aBC 3682 bbx 3683 0: bbx 3684 1: bb 3685 BBx 3686 0: BBx 3687 1: BB 3688 *** Failers 3689 No match 3690 abcX 3691 No match 3692 aBCX 3693 No match 3694 bbX 3695 No match 3696 BBX 3697 No match 3698 3699 /^([ab](?i)[cd]|[ef])/ 3700 ac 3701 0: ac 3702 1: ac 3703 aC 3704 0: aC 3705 1: aC 3706 bD 3707 0: bD 3708 1: bD 3709 elephant 3710 0: e 3711 1: e 3712 Europe 3713 0: E 3714 1: E 3715 frog 3716 0: f 3717 1: f 3718 France 3719 0: F 3720 1: F 3721 *** Failers 3722 No match 3723 Africa 3724 No match 3725 3726 /^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/ 3727 ab 3728 0: ab 3729 1: ab 3730 aBd 3731 0: aBd 3732 1: aBd 3733 xy 3734 0: xy 3735 1: xy 3736 xY 3737 0: xY 3738 1: xY 3739 zebra 3740 0: z 3741 1: z 3742 Zambesi 3743 0: Z 3744 1: Z 3745 *** Failers 3746 No match 3747 aCD 3748 No match 3749 XY 3750 No match 3751 3752 /(?<=foo\n)^bar/m 3753 foo\nbar 3754 0: bar 3755 *** Failers 3756 No match 3757 bar 3758 No match 3759 baz\nbar 3760 No match 3761 3762 /(?<=(?<!foo)bar)baz/ 3763 barbaz 3764 0: baz 3765 barbarbaz 3766 0: baz 3767 koobarbaz 3768 0: baz 3769 *** Failers 3770 No match 3771 baz 3772 No match 3773 foobarbaz 3774 No match 3775 3776 /The cases of aaaa and aaaaaa are missed out below because Perl does things/ 3777 /differently. We know that odd, and maybe incorrect, things happen with/ 3778 No match 3779 /recursive references in Perl, as far as 5.11.3 - see some stuff in test #2./ 3780 No match 3781 3782 /^(a\1?){4}$/ 3783 a 3784 No match 3785 aa 3786 No match 3787 aaa 3788 No match 3789 aaaaa 3790 0: aaaaa 3791 1: a 3792 aaaaaaa 3793 0: aaaaaaa 3794 1: a 3795 aaaaaaaa 3796 No match 3797 aaaaaaaaa 3798 No match 3799 aaaaaaaaaa 3800 0: aaaaaaaaaa 3801 1: aaaa 3802 aaaaaaaaaaa 3803 No match 3804 aaaaaaaaaaaa 3805 No match 3806 aaaaaaaaaaaaa 3807 No match 3808 aaaaaaaaaaaaaa 3809 No match 3810 aaaaaaaaaaaaaaa 3811 No match 3812 aaaaaaaaaaaaaaaa 3813 No match 3814 3815 /^(a\1?)(a\1?)(a\2?)(a\3?)$/ 3816 a 3817 No match 3818 aa 3819 No match 3820 aaa 3821 No match 3822 aaaa 3823 0: aaaa 3824 1: a 3825 2: a 3826 3: a 3827 4: a 3828 aaaaa 3829 0: aaaaa 3830 1: a 3831 2: aa 3832 3: a 3833 4: a 3834 aaaaaa 3835 0: aaaaaa 3836 1: a 3837 2: aa 3838 3: a 3839 4: aa 3840 aaaaaaa 3841 0: aaaaaaa 3842 1: a 3843 2: aa 3844 3: aaa 3845 4: a 3846 aaaaaaaa 3847 No match 3848 aaaaaaaaa 3849 No match 3850 aaaaaaaaaa 3851 0: aaaaaaaaaa 3852 1: a 3853 2: aa 3854 3: aaa 3855 4: aaaa 3856 aaaaaaaaaaa 3857 No match 3858 aaaaaaaaaaaa 3859 No match 3860 aaaaaaaaaaaaa 3861 No match 3862 aaaaaaaaaaaaaa 3863 No match 3864 aaaaaaaaaaaaaaa 3865 No match 3866 aaaaaaaaaaaaaaaa 3867 No match 3868 3869 /The following tests are taken from the Perl 5.005 test suite; some of them/ 3870 /are compatible with 5.004, but I'd rather not have to sort them out./ 3871 No match 3872 3873 /abc/ 3874 abc 3875 0: abc 3876 xabcy 3877 0: abc 3878 ababc 3879 0: abc 3880 *** Failers 3881 No match 3882 xbc 3883 No match 3884 axc 3885 No match 3886 abx 3887 No match 3888 3889 /ab*c/ 3890 abc 3891 0: abc 3892 3893 /ab*bc/ 3894 abc 3895 0: abc 3896 abbc 3897 0: abbc 3898 abbbbc 3899 0: abbbbc 3900 3901 /.{1}/ 3902 abbbbc 3903 0: a 3904 3905 /.{3,4}/ 3906 abbbbc 3907 0: abbb 3908 3909 /ab{0,}bc/ 3910 abbbbc 3911 0: abbbbc 3912 3913 /ab+bc/ 3914 abbc 3915 0: abbc 3916 *** Failers 3917 No match 3918 abc 3919 No match 3920 abq 3921 No match 3922 3923 /ab{1,}bc/ 3924 3925 /ab+bc/ 3926 abbbbc 3927 0: abbbbc 3928 3929 /ab{1,}bc/ 3930 abbbbc 3931 0: abbbbc 3932 3933 /ab{1,3}bc/ 3934 abbbbc 3935 0: abbbbc 3936 3937 /ab{3,4}bc/ 3938 abbbbc 3939 0: abbbbc 3940 3941 /ab{4,5}bc/ 3942 *** Failers 3943 No match 3944 abq 3945 No match 3946 abbbbc 3947 No match 3948 3949 /ab?bc/ 3950 abbc 3951 0: abbc 3952 abc 3953 0: abc 3954 3955 /ab{0,1}bc/ 3956 abc 3957 0: abc 3958 3959 /ab?bc/ 3960 3961 /ab?c/ 3962 abc 3963 0: abc 3964 3965 /ab{0,1}c/ 3966 abc 3967 0: abc 3968 3969 /^abc$/ 3970 abc 3971 0: abc 3972 *** Failers 3973 No match 3974 abbbbc 3975 No match 3976 abcc 3977 No match 3978 3979 /^abc/ 3980 abcc 3981 0: abc 3982 3983 /^abc$/ 3984 3985 /abc$/ 3986 aabc 3987 0: abc 3988 *** Failers 3989 No match 3990 aabc 3991 0: abc 3992 aabcd 3993 No match 3994 3995 /^/ 3996 abc 3997 0: 3998 3999 /$/ 4000 abc 4001 0: 4002 4003 /a.c/ 4004 abc 4005 0: abc 4006 axc 4007 0: axc 4008 4009 /a.*c/ 4010 axyzc 4011 0: axyzc 4012 4013 /a[bc]d/ 4014 abd 4015 0: abd 4016 *** Failers 4017 No match 4018 axyzd 4019 No match 4020 abc 4021 No match 4022 4023 /a[b-d]e/ 4024 ace 4025 0: ace 4026 4027 /a[b-d]/ 4028 aac 4029 0: ac 4030 4031 /a[-b]/ 4032 a- 4033 0: a- 4034 4035 /a[b-]/ 4036 a- 4037 0: a- 4038 4039 /a]/ 4040 a] 4041 0: a] 4042 4043 /a[]]b/ 4044 a]b 4045 0: a]b 4046 4047 /a[^bc]d/ 4048 aed 4049 0: aed 4050 *** Failers 4051 No match 4052 abd 4053 No match 4054 abd 4055 No match 4056 4057 /a[^-b]c/ 4058 adc 4059 0: adc 4060 4061 /a[^]b]c/ 4062 adc 4063 0: adc 4064 *** Failers 4065 No match 4066 a-c 4067 0: a-c 4068 a]c 4069 No match 4070 4071 /\ba\b/ 4072 a- 4073 0: a 4074 -a 4075 0: a 4076 -a- 4077 0: a 4078 4079 /\by\b/ 4080 *** Failers 4081 No match 4082 xy 4083 No match 4084 yz 4085 No match 4086 xyz 4087 No match 4088 4089 /\Ba\B/ 4090 *** Failers 4091 0: a 4092 a- 4093 No match 4094 -a 4095 No match 4096 -a- 4097 No match 4098 4099 /\By\b/ 4100 xy 4101 0: y 4102 4103 /\by\B/ 4104 yz 4105 0: y 4106 4107 /\By\B/ 4108 xyz 4109 0: y 4110 4111 /\w/ 4112 a 4113 0: a 4114 4115 /\W/ 4116 - 4117 0: - 4118 *** Failers 4119 0: * 4120 - 4121 0: - 4122 a 4123 No match 4124 4125 /a\sb/ 4126 a b 4127 0: a b 4128 4129 /a\Sb/ 4130 a-b 4131 0: a-b 4132 *** Failers 4133 No match 4134 a-b 4135 0: a-b 4136 a b 4137 No match 4138 4139 /\d/ 4140 1 4141 0: 1 4142 4143 /\D/ 4144 - 4145 0: - 4146 *** Failers 4147 0: * 4148 - 4149 0: - 4150 1 4151 No match 4152 4153 /[\w]/ 4154 a 4155 0: a 4156 4157 /[\W]/ 4158 - 4159 0: - 4160 *** Failers 4161 0: * 4162 - 4163 0: - 4164 a 4165 No match 4166 4167 /a[\s]b/ 4168 a b 4169 0: a b 4170 4171 /a[\S]b/ 4172 a-b 4173 0: a-b 4174 *** Failers 4175 No match 4176 a-b 4177 0: a-b 4178 a b 4179 No match 4180 4181 /[\d]/ 4182 1 4183 0: 1 4184 4185 /[\D]/ 4186 - 4187 0: - 4188 *** Failers 4189 0: * 4190 - 4191 0: - 4192 1 4193 No match 4194 4195 /ab|cd/ 4196 abc 4197 0: ab 4198 abcd 4199 0: ab 4200 4201 /()ef/ 4202 def 4203 0: ef 4204 1: 4205 4206 /$b/ 4207 4208 /a\(b/ 4209 a(b 4210 0: a(b 4211 4212 /a\(*b/ 4213 ab 4214 0: ab 4215 a((b 4216 0: a((b 4217 4218 /a\\b/ 4219 a\b 4220 No match 4221 4222 /((a))/ 4223 abc 4224 0: a 4225 1: a 4226 2: a 4227 4228 /(a)b(c)/ 4229 abc 4230 0: abc 4231 1: a 4232 2: c 4233 4234 /a+b+c/ 4235 aabbabc 4236 0: abc 4237 4238 /a{1,}b{1,}c/ 4239 aabbabc 4240 0: abc 4241 4242 /a.+?c/ 4243 abcabc 4244 0: abc 4245 4246 /(a+|b)*/ 4247 ab 4248 0: ab 4249 1: b 4250 4251 /(a+|b){0,}/ 4252 ab 4253 0: ab 4254 1: b 4255 4256 /(a+|b)+/ 4257 ab 4258 0: ab 4259 1: b 4260 4261 /(a+|b){1,}/ 4262 ab 4263 0: ab 4264 1: b 4265 4266 /(a+|b)?/ 4267 ab 4268 0: a 4269 1: a 4270 4271 /(a+|b){0,1}/ 4272 ab 4273 0: a 4274 1: a 4275 4276 /[^ab]*/ 4277 cde 4278 0: cde 4279 4280 /abc/ 4281 *** Failers 4282 No match 4283 b 4284 No match 4285 4286 4287 /a*/ 4288 4289 4290 /([abc])*d/ 4291 abbbcd 4292 0: abbbcd 4293 1: c 4294 4295 /([abc])*bcd/ 4296 abcd 4297 0: abcd 4298 1: a 4299 4300 /a|b|c|d|e/ 4301 e 4302 0: e 4303 4304 /(a|b|c|d|e)f/ 4305 ef 4306 0: ef 4307 1: e 4308 4309 /abcd*efg/ 4310 abcdefg 4311 0: abcdefg 4312 4313 /ab*/ 4314 xabyabbbz 4315 0: ab 4316 xayabbbz 4317 0: a 4318 4319 /(ab|cd)e/ 4320 abcde 4321 0: cde 4322 1: cd 4323 4324 /[abhgefdc]ij/ 4325 hij 4326 0: hij 4327 4328 /^(ab|cd)e/ 4329 4330 /(abc|)ef/ 4331 abcdef 4332 0: ef 4333 1: 4334 4335 /(a|b)c*d/ 4336 abcd 4337 0: bcd 4338 1: b 4339 4340 /(ab|ab*)bc/ 4341 abc 4342 0: abc 4343 1: a 4344 4345 /a([bc]*)c*/ 4346 abc 4347 0: abc 4348 1: bc 4349 4350 /a([bc]*)(c*d)/ 4351 abcd 4352 0: abcd 4353 1: bc 4354 2: d 4355 4356 /a([bc]+)(c*d)/ 4357 abcd 4358 0: abcd 4359 1: bc 4360 2: d 4361 4362 /a([bc]*)(c+d)/ 4363 abcd 4364 0: abcd 4365 1: b 4366 2: cd 4367 4368 /a[bcd]*dcdcde/ 4369 adcdcde 4370 0: adcdcde 4371 4372 /a[bcd]+dcdcde/ 4373 *** Failers 4374 No match 4375 abcde 4376 No match 4377 adcdcde 4378 No match 4379 4380 /(ab|a)b*c/ 4381 abc 4382 0: abc 4383 1: ab 4384 4385 /((a)(b)c)(d)/ 4386 abcd 4387 0: abcd 4388 1: abc 4389 2: a 4390 3: b 4391 4: d 4392 4393 /[a-zA-Z_][a-zA-Z0-9_]*/ 4394 alpha 4395 0: alpha 4396 4397 /^a(bc+|b[eh])g|.h$/ 4398 abh 4399 0: bh 4400 4401 /(bc+d$|ef*g.|h?i(j|k))/ 4402 effgz 4403 0: effgz 4404 1: effgz 4405 ij 4406 0: ij 4407 1: ij 4408 2: j 4409 reffgz 4410 0: effgz 4411 1: effgz 4412 *** Failers 4413 No match 4414 effg 4415 No match 4416 bcdd 4417 No match 4418 4419 /((((((((((a))))))))))/ 4420 a 4421 0: a 4422 1: a 4423 2: a 4424 3: a 4425 4: a 4426 5: a 4427 6: a 4428 7: a 4429 8: a 4430 9: a 4431 10: a 4432 4433 /((((((((((a))))))))))\10/ 4434 aa 4435 0: aa 4436 1: a 4437 2: a 4438 3: a 4439 4: a 4440 5: a 4441 6: a 4442 7: a 4443 8: a 4444 9: a 4445 10: a 4446 4447 /(((((((((a)))))))))/ 4448 a 4449 0: a 4450 1: a 4451 2: a 4452 3: a 4453 4: a 4454 5: a 4455 6: a 4456 7: a 4457 8: a 4458 9: a 4459 4460 /multiple words of text/ 4461 *** Failers 4462 No match 4463 aa 4464 No match 4465 uh-uh 4466 No match 4467 4468 /multiple words/ 4469 multiple words, yeah 4470 0: multiple words 4471 4472 /(.*)c(.*)/ 4473 abcde 4474 0: abcde 4475 1: ab 4476 2: de 4477 4478 /\((.*), (.*)\)/ 4479 (a, b) 4480 0: (a, b) 4481 1: a 4482 2: b 4483 4484 /[k]/ 4485 4486 /abcd/ 4487 abcd 4488 0: abcd 4489 4490 /a(bc)d/ 4491 abcd 4492 0: abcd 4493 1: bc 4494 4495 /a[-]?c/ 4496 ac 4497 0: ac 4498 4499 /(abc)\1/ 4500 abcabc 4501 0: abcabc 4502 1: abc 4503 4504 /([a-c]*)\1/ 4505 abcabc 4506 0: abcabc 4507 1: abc 4508 4509 /(a)|\1/ 4510 a 4511 0: a 4512 1: a 4513 *** Failers 4514 0: a 4515 1: a 4516 ab 4517 0: a 4518 1: a 4519 x 4520 No match 4521 4522 /(([a-c])b*?\2)*/ 4523 ababbbcbc 4524 0: ababb 4525 1: bb 4526 2: b 4527 4528 /(([a-c])b*?\2){3}/ 4529 ababbbcbc 4530 0: ababbbcbc 4531 1: cbc 4532 2: c 4533 4534 /((\3|b)\2(a)x)+/ 4535 aaaxabaxbaaxbbax 4536 0: bbax 4537 1: bbax 4538 2: b 4539 3: a 4540 4541 /((\3|b)\2(a)){2,}/ 4542 bbaababbabaaaaabbaaaabba 4543 0: bbaaaabba 4544 1: bba 4545 2: b 4546 3: a 4547 4548 /abc/i 4549 ABC 4550 0: ABC 4551 XABCY 4552 0: ABC 4553 ABABC 4554 0: ABC 4555 *** Failers 4556 No match 4557 aaxabxbaxbbx 4558 No match 4559 XBC 4560 No match 4561 AXC 4562 No match 4563 ABX 4564 No match 4565 4566 /ab*c/i 4567 ABC 4568 0: ABC 4569 4570 /ab*bc/i 4571 ABC 4572 0: ABC 4573 ABBC 4574 0: ABBC 4575 4576 /ab*?bc/i 4577 ABBBBC 4578 0: ABBBBC 4579 4580 /ab{0,}?bc/i 4581 ABBBBC 4582 0: ABBBBC 4583 4584 /ab+?bc/i 4585 ABBC 4586 0: ABBC 4587 4588 /ab+bc/i 4589 *** Failers 4590 No match 4591 ABC 4592 No match 4593 ABQ 4594 No match 4595 4596 /ab{1,}bc/i 4597 4598 /ab+bc/i 4599 ABBBBC 4600 0: ABBBBC 4601 4602 /ab{1,}?bc/i 4603 ABBBBC 4604 0: ABBBBC 4605 4606 /ab{1,3}?bc/i 4607 ABBBBC 4608 0: ABBBBC 4609 4610 /ab{3,4}?bc/i 4611 ABBBBC 4612 0: ABBBBC 4613 4614 /ab{4,5}?bc/i 4615 *** Failers 4616 No match 4617 ABQ 4618 No match 4619 ABBBBC 4620 No match 4621 4622 /ab??bc/i 4623 ABBC 4624 0: ABBC 4625 ABC 4626 0: ABC 4627 4628 /ab{0,1}?bc/i 4629 ABC 4630 0: ABC 4631 4632 /ab??bc/i 4633 4634 /ab??c/i 4635 ABC 4636 0: ABC 4637 4638 /ab{0,1}?c/i 4639 ABC 4640 0: ABC 4641 4642 /^abc$/i 4643 ABC 4644 0: ABC 4645 *** Failers 4646 No match 4647 ABBBBC 4648 No match 4649 ABCC 4650 No match 4651 4652 /^abc/i 4653 ABCC 4654 0: ABC 4655 4656 /^abc$/i 4657 4658 /abc$/i 4659 AABC 4660 0: ABC 4661 4662 /^/i 4663 ABC 4664 0: 4665 4666 /$/i 4667 ABC 4668 0: 4669 4670 /a.c/i 4671 ABC 4672 0: ABC 4673 AXC 4674 0: AXC 4675 4676 /a.*?c/i 4677 AXYZC 4678 0: AXYZC 4679 4680 /a.*c/i 4681 *** Failers 4682 No match 4683 AABC 4684 0: AABC 4685 AXYZD 4686 No match 4687 4688 /a[bc]d/i 4689 ABD 4690 0: ABD 4691 4692 /a[b-d]e/i 4693 ACE 4694 0: ACE 4695 *** Failers 4696 No match 4697 ABC 4698 No match 4699 ABD 4700 No match 4701 4702 /a[b-d]/i 4703 AAC 4704 0: AC 4705 4706 /a[-b]/i 4707 A- 4708 0: A- 4709 4710 /a[b-]/i 4711 A- 4712 0: A- 4713 4714 /a]/i 4715 A] 4716 0: A] 4717 4718 /a[]]b/i 4719 A]B 4720 0: A]B 4721 4722 /a[^bc]d/i 4723 AED 4724 0: AED 4725 4726 /a[^-b]c/i 4727 ADC 4728 0: ADC 4729 *** Failers 4730 No match 4731 ABD 4732 No match 4733 A-C 4734 No match 4735 4736 /a[^]b]c/i 4737 ADC 4738 0: ADC 4739 4740 /ab|cd/i 4741 ABC 4742 0: AB 4743 ABCD 4744 0: AB 4745 4746 /()ef/i 4747 DEF 4748 0: EF 4749 1: 4750 4751 /$b/i 4752 *** Failers 4753 No match 4754 A]C 4755 No match 4756 B 4757 No match 4758 4759 /a\(b/i 4760 A(B 4761 0: A(B 4762 4763 /a\(*b/i 4764 AB 4765 0: AB 4766 A((B 4767 0: A((B 4768 4769 /a\\b/i 4770 A\B 4771 No match 4772 4773 /((a))/i 4774 ABC 4775 0: A 4776 1: A 4777 2: A 4778 4779 /(a)b(c)/i 4780 ABC 4781 0: ABC 4782 1: A 4783 2: C 4784 4785 /a+b+c/i 4786 AABBABC 4787 0: ABC 4788 4789 /a{1,}b{1,}c/i 4790 AABBABC 4791 0: ABC 4792 4793 /a.+?c/i 4794 ABCABC 4795 0: ABC 4796 4797 /a.*?c/i 4798 ABCABC 4799 0: ABC 4800 4801 /a.{0,5}?c/i 4802 ABCABC 4803 0: ABC 4804 4805 /(a+|b)*/i 4806 AB 4807 0: AB 4808 1: B 4809 4810 /(a+|b){0,}/i 4811 AB 4812 0: AB 4813 1: B 4814 4815 /(a+|b)+/i 4816 AB 4817 0: AB 4818 1: B 4819 4820 /(a+|b){1,}/i 4821 AB 4822 0: AB 4823 1: B 4824 4825 /(a+|b)?/i 4826 AB 4827 0: A 4828 1: A 4829 4830 /(a+|b){0,1}/i 4831 AB 4832 0: A 4833 1: A 4834 4835 /(a+|b){0,1}?/i 4836 AB 4837 0: 4838 4839 /[^ab]*/i 4840 CDE 4841 0: CDE 4842 4843 /abc/i 4844 4845 /a*/i 4846 4847 4848 /([abc])*d/i 4849 ABBBCD 4850 0: ABBBCD 4851 1: C 4852 4853 /([abc])*bcd/i 4854 ABCD 4855 0: ABCD 4856 1: A 4857 4858 /a|b|c|d|e/i 4859 E 4860 0: E 4861 4862 /(a|b|c|d|e)f/i 4863 EF 4864 0: EF 4865 1: E 4866 4867 /abcd*efg/i 4868 ABCDEFG 4869 0: ABCDEFG 4870 4871 /ab*/i 4872 XABYABBBZ 4873 0: AB 4874 XAYABBBZ 4875 0: A 4876 4877 /(ab|cd)e/i 4878 ABCDE 4879 0: CDE 4880 1: CD 4881 4882 /[abhgefdc]ij/i 4883 HIJ 4884 0: HIJ 4885 4886 /^(ab|cd)e/i 4887 ABCDE 4888 No match 4889 4890 /(abc|)ef/i 4891 ABCDEF 4892 0: EF 4893 1: 4894 4895 /(a|b)c*d/i 4896 ABCD 4897 0: BCD 4898 1: B 4899 4900 /(ab|ab*)bc/i 4901 ABC 4902 0: ABC 4903 1: A 4904 4905 /a([bc]*)c*/i 4906 ABC 4907 0: ABC 4908 1: BC 4909 4910 /a([bc]*)(c*d)/i 4911 ABCD 4912 0: ABCD 4913 1: BC 4914 2: D 4915 4916 /a([bc]+)(c*d)/i 4917 ABCD 4918 0: ABCD 4919 1: BC 4920 2: D 4921 4922 /a([bc]*)(c+d)/i 4923 ABCD 4924 0: ABCD 4925 1: B 4926 2: CD 4927 4928 /a[bcd]*dcdcde/i 4929 ADCDCDE 4930 0: ADCDCDE 4931 4932 /a[bcd]+dcdcde/i 4933 4934 /(ab|a)b*c/i 4935 ABC 4936 0: ABC 4937 1: AB 4938 4939 /((a)(b)c)(d)/i 4940 ABCD 4941 0: ABCD 4942 1: ABC 4943 2: A 4944 3: B 4945 4: D 4946 4947 /[a-zA-Z_][a-zA-Z0-9_]*/i 4948 ALPHA 4949 0: ALPHA 4950 4951 /^a(bc+|b[eh])g|.h$/i 4952 ABH 4953 0: BH 4954 4955 /(bc+d$|ef*g.|h?i(j|k))/i 4956 EFFGZ 4957 0: EFFGZ 4958 1: EFFGZ 4959 IJ 4960 0: IJ 4961 1: IJ 4962 2: J 4963 REFFGZ 4964 0: EFFGZ 4965 1: EFFGZ 4966 *** Failers 4967 No match 4968 ADCDCDE 4969 No match 4970 EFFG 4971 No match 4972 BCDD 4973 No match 4974 4975 /((((((((((a))))))))))/i 4976 A 4977 0: A 4978 1: A 4979 2: A 4980 3: A 4981 4: A 4982 5: A 4983 6: A 4984 7: A 4985 8: A 4986 9: A 4987 10: A 4988 4989 /((((((((((a))))))))))\10/i 4990 AA 4991 0: AA 4992 1: A 4993 2: A 4994 3: A 4995 4: A 4996 5: A 4997 6: A 4998 7: A 4999 8: A 5000 9: A 5001 10: A 5002 5003 /(((((((((a)))))))))/i 5004 A 5005 0: A 5006 1: A 5007 2: A 5008 3: A 5009 4: A 5010 5: A 5011 6: A 5012 7: A 5013 8: A 5014 9: A 5015 5016 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))/i 5017 A 5018 0: A 5019 1: A 5020 5021 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/i 5022 C 5023 0: C 5024 1: C 5025 5026 /multiple words of text/i 5027 *** Failers 5028 No match 5029 AA 5030 No match 5031 UH-UH 5032 No match 5033 5034 /multiple words/i 5035 MULTIPLE WORDS, YEAH 5036 0: MULTIPLE WORDS 5037 5038 /(.*)c(.*)/i 5039 ABCDE 5040 0: ABCDE 5041 1: AB 5042 2: DE 5043 5044 /\((.*), (.*)\)/i 5045 (A, B) 5046 0: (A, B) 5047 1: A 5048 2: B 5049 5050 /[k]/i 5051 5052 /abcd/i 5053 ABCD 5054 0: ABCD 5055 5056 /a(bc)d/i 5057 ABCD 5058 0: ABCD 5059 1: BC 5060 5061 /a[-]?c/i 5062 AC 5063 0: AC 5064 5065 /(abc)\1/i 5066 ABCABC 5067 0: ABCABC 5068 1: ABC 5069 5070 /([a-c]*)\1/i 5071 ABCABC 5072 0: ABCABC 5073 1: ABC 5074 5075 /a(?!b)./ 5076 abad 5077 0: ad 5078 5079 /a(?=d)./ 5080 abad 5081 0: ad 5082 5083 /a(?=c|d)./ 5084 abad 5085 0: ad 5086 5087 /a(?:b|c|d)(.)/ 5088 ace 5089 0: ace 5090 1: e 5091 5092 /a(?:b|c|d)*(.)/ 5093 ace 5094 0: ace 5095 1: e 5096 5097 /a(?:b|c|d)+?(.)/ 5098 ace 5099 0: ace 5100 1: e 5101 acdbcdbe 5102 0: acd 5103 1: d 5104 5105 /a(?:b|c|d)+(.)/ 5106 acdbcdbe 5107 0: acdbcdbe 5108 1: e 5109 5110 /a(?:b|c|d){2}(.)/ 5111 acdbcdbe 5112 0: acdb 5113 1: b 5114 5115 /a(?:b|c|d){4,5}(.)/ 5116 acdbcdbe 5117 0: acdbcdb 5118 1: b 5119 5120 /a(?:b|c|d){4,5}?(.)/ 5121 acdbcdbe 5122 0: acdbcd 5123 1: d 5124 5125 /((foo)|(bar))*/ 5126 foobar 5127 0: foobar 5128 1: bar 5129 2: foo 5130 3: bar 5131 5132 /a(?:b|c|d){6,7}(.)/ 5133 acdbcdbe 5134 0: acdbcdbe 5135 1: e 5136 5137 /a(?:b|c|d){6,7}?(.)/ 5138 acdbcdbe 5139 0: acdbcdbe 5140 1: e 5141 5142 /a(?:b|c|d){5,6}(.)/ 5143 acdbcdbe 5144 0: acdbcdbe 5145 1: e 5146 5147 /a(?:b|c|d){5,6}?(.)/ 5148 acdbcdbe 5149 0: acdbcdb 5150 1: b 5151 5152 /a(?:b|c|d){5,7}(.)/ 5153 acdbcdbe 5154 0: acdbcdbe 5155 1: e 5156 5157 /a(?:b|c|d){5,7}?(.)/ 5158 acdbcdbe 5159 0: acdbcdb 5160 1: b 5161 5162 /a(?:b|(c|e){1,2}?|d)+?(.)/ 5163 ace 5164 0: ace 5165 1: c 5166 2: e 5167 5168 /^(.+)?B/ 5169 AB 5170 0: AB 5171 1: A 5172 5173 /^([^a-z])|(\^)$/ 5174 . 5175 0: . 5176 1: . 5177 5178 /^[<>]&/ 5179 <&OUT 5180 0: <& 5181 5182 /^(a\1?){4}$/ 5183 aaaaaaaaaa 5184 0: aaaaaaaaaa 5185 1: aaaa 5186 *** Failers 5187 No match 5188 AB 5189 No match 5190 aaaaaaaaa 5191 No match 5192 aaaaaaaaaaa 5193 No match 5194 5195 /^(a(?(1)\1)){4}$/ 5196 aaaaaaaaaa 5197 0: aaaaaaaaaa 5198 1: aaaa 5199 *** Failers 5200 No match 5201 aaaaaaaaa 5202 No match 5203 aaaaaaaaaaa 5204 No match 5205 5206 /(?:(f)(o)(o)|(b)(a)(r))*/ 5207 foobar 5208 0: foobar 5209 1: f 5210 2: o 5211 3: o 5212 4: b 5213 5: a 5214 6: r 5215 5216 /(?<=a)b/ 5217 ab 5218 0: b 5219 *** Failers 5220 No match 5221 cb 5222 No match 5223 b 5224 No match 5225 5226 /(?<!c)b/ 5227 ab 5228 0: b 5229 b 5230 0: b 5231 b 5232 0: b 5233 5234 /(?:..)*a/ 5235 aba 5236 0: aba 5237 5238 /(?:..)*?a/ 5239 aba 5240 0: a 5241 5242 /^(?:b|a(?=(.)))*\1/ 5243 abc 5244 0: ab 5245 1: b 5246 5247 /^(){3,5}/ 5248 abc 5249 0: 5250 1: 5251 5252 /^(a+)*ax/ 5253 aax 5254 0: aax 5255 1: a 5256 5257 /^((a|b)+)*ax/ 5258 aax 5259 0: aax 5260 1: a 5261 2: a 5262 5263 /^((a|bc)+)*ax/ 5264 aax 5265 0: aax 5266 1: a 5267 2: a 5268 5269 /(a|x)*ab/ 5270 cab 5271 0: ab 5272 5273 /(a)*ab/ 5274 cab 5275 0: ab 5276 5277 /(?:(?i)a)b/ 5278 ab 5279 0: ab 5280 5281 /((?i)a)b/ 5282 ab 5283 0: ab 5284 1: a 5285 5286 /(?:(?i)a)b/ 5287 Ab 5288 0: Ab 5289 5290 /((?i)a)b/ 5291 Ab 5292 0: Ab 5293 1: A 5294 5295 /(?:(?i)a)b/ 5296 *** Failers 5297 No match 5298 cb 5299 No match 5300 aB 5301 No match 5302 5303 /((?i)a)b/ 5304 5305 /(?i:a)b/ 5306 ab 5307 0: ab 5308 5309 /((?i:a))b/ 5310 ab 5311 0: ab 5312 1: a 5313 5314 /(?i:a)b/ 5315 Ab 5316 0: Ab 5317 5318 /((?i:a))b/ 5319 Ab 5320 0: Ab 5321 1: A 5322 5323 /(?i:a)b/ 5324 *** Failers 5325 No match 5326 aB 5327 No match 5328 aB 5329 No match 5330 5331 /((?i:a))b/ 5332 5333 /(?:(?-i)a)b/i 5334 ab 5335 0: ab 5336 5337 /((?-i)a)b/i 5338 ab 5339 0: ab 5340 1: a 5341 5342 /(?:(?-i)a)b/i 5343 aB 5344 0: aB 5345 5346 /((?-i)a)b/i 5347 aB 5348 0: aB 5349 1: a 5350 5351 /(?:(?-i)a)b/i 5352 *** Failers 5353 No match 5354 aB 5355 0: aB 5356 Ab 5357 No match 5358 5359 /((?-i)a)b/i 5360 5361 /(?:(?-i)a)b/i 5362 aB 5363 0: aB 5364 5365 /((?-i)a)b/i 5366 aB 5367 0: aB 5368 1: a 5369 5370 /(?:(?-i)a)b/i 5371 *** Failers 5372 No match 5373 Ab 5374 No match 5375 AB 5376 No match 5377 5378 /((?-i)a)b/i 5379 5380 /(?-i:a)b/i 5381 ab 5382 0: ab 5383 5384 /((?-i:a))b/i 5385 ab 5386 0: ab 5387 1: a 5388 5389 /(?-i:a)b/i 5390 aB 5391 0: aB 5392 5393 /((?-i:a))b/i 5394 aB 5395 0: aB 5396 1: a 5397 5398 /(?-i:a)b/i 5399 *** Failers 5400 No match 5401 AB 5402 No match 5403 Ab 5404 No match 5405 5406 /((?-i:a))b/i 5407 5408 /(?-i:a)b/i 5409 aB 5410 0: aB 5411 5412 /((?-i:a))b/i 5413 aB 5414 0: aB 5415 1: a 5416 5417 /(?-i:a)b/i 5418 *** Failers 5419 No match 5420 Ab 5421 No match 5422 AB 5423 No match 5424 5425 /((?-i:a))b/i 5426 5427 /((?-i:a.))b/i 5428 *** Failers 5429 No match 5430 AB 5431 No match 5432 a\nB 5433 No match 5434 5435 /((?s-i:a.))b/i 5436 a\nB 5437 0: a\x0aB 5438 1: a\x0a 5439 5440 /(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))/ 5441 cabbbb 5442 0: cabbbb 5443 5444 /(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/ 5445 caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 5446 0: caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 5447 5448 /(ab)\d\1/i 5449 Ab4ab 5450 0: Ab4ab 5451 1: Ab 5452 ab4Ab 5453 0: ab4Ab 5454 1: ab 5455 5456 /foo\w*\d{4}baz/ 5457 foobar1234baz 5458 0: foobar1234baz 5459 5460 /x(~~)*(?:(?:F)?)?/ 5461 x~~ 5462 0: x~~ 5463 1: ~~ 5464 5465 /^a(?#xxx){3}c/ 5466 aaac 5467 0: aaac 5468 5469 /^a (?#xxx) (?#yyy) {3}c/x 5470 aaac 5471 0: aaac 5472 5473 /(?<![cd])b/ 5474 *** Failers 5475 No match 5476 B\nB 5477 No match 5478 dbcb 5479 No match 5480 5481 /(?<![cd])[ab]/ 5482 dbaacb 5483 0: a 5484 5485 /(?<!(c|d))b/ 5486 5487 /(?<!(c|d))[ab]/ 5488 dbaacb 5489 0: a 5490 5491 /(?<!cd)[ab]/ 5492 cdaccb 5493 0: b 5494 5495 /^(?:a?b?)*$/ 5496 \ 5497 0: 5498 a 5499 0: a 5500 ab 5501 0: ab 5502 aaa 5503 0: aaa 5504 *** Failers 5505 No match 5506 dbcb 5507 No match 5508 a-- 5509 No match 5510 aa-- 5511 No match 5512 5513 /((?s)^a(.))((?m)^b$)/ 5514 a\nb\nc\n 5515 0: a\x0ab 5516 1: a\x0a 5517 2: \x0a 5518 3: b 5519 5520 /((?m)^b$)/ 5521 a\nb\nc\n 5522 0: b 5523 1: b 5524 5525 /(?m)^b/ 5526 a\nb\n 5527 0: b 5528 5529 /(?m)^(b)/ 5530 a\nb\n 5531 0: b 5532 1: b 5533 5534 /((?m)^b)/ 5535 a\nb\n 5536 0: b 5537 1: b 5538 5539 /\n((?m)^b)/ 5540 a\nb\n 5541 0: \x0ab 5542 1: b 5543 5544 /((?s).)c(?!.)/ 5545 a\nb\nc\n 5546 0: \x0ac 5547 1: \x0a 5548 a\nb\nc\n 5549 0: \x0ac 5550 1: \x0a 5551 5552 /((?s)b.)c(?!.)/ 5553 a\nb\nc\n 5554 0: b\x0ac 5555 1: b\x0a 5556 a\nb\nc\n 5557 0: b\x0ac 5558 1: b\x0a 5559 5560 /^b/ 5561 5562 /()^b/ 5563 *** Failers 5564 No match 5565 a\nb\nc\n 5566 No match 5567 a\nb\nc\n 5568 No match 5569 5570 /((?m)^b)/ 5571 a\nb\nc\n 5572 0: b 5573 1: b 5574 5575 /(x)?(?(1)a|b)/ 5576 *** Failers 5577 No match 5578 a 5579 No match 5580 a 5581 No match 5582 5583 /(x)?(?(1)b|a)/ 5584 a 5585 0: a 5586 5587 /()?(?(1)b|a)/ 5588 a 5589 0: a 5590 5591 /()(?(1)b|a)/ 5592 5593 /()?(?(1)a|b)/ 5594 a 5595 0: a 5596 1: 5597 5598 /^(\()?blah(?(1)(\)))$/ 5599 (blah) 5600 0: (blah) 5601 1: ( 5602 2: ) 5603 blah 5604 0: blah 5605 *** Failers 5606 No match 5607 a 5608 No match 5609 blah) 5610 No match 5611 (blah 5612 No match 5613 5614 /^(\(+)?blah(?(1)(\)))$/ 5615 (blah) 5616 0: (blah) 5617 1: ( 5618 2: ) 5619 blah 5620 0: blah 5621 *** Failers 5622 No match 5623 blah) 5624 No match 5625 (blah 5626 No match 5627 5628 /(?(?!a)a|b)/ 5629 5630 /(?(?!a)b|a)/ 5631 a 5632 0: a 5633 5634 /(?(?=a)b|a)/ 5635 *** Failers 5636 No match 5637 a 5638 No match 5639 a 5640 No match 5641 5642 /(?(?=a)a|b)/ 5643 a 5644 0: a 5645 5646 /(?=(a+?))(\1ab)/ 5647 aaab 5648 0: aab 5649 1: a 5650 2: aab 5651 5652 /^(?=(a+?))\1ab/ 5653 5654 /(\w+:)+/ 5655 one: 5656 0: one: 5657 1: one: 5658 5659 /$(?<=^(a))/ 5660 a 5661 0: 5662 1: a 5663 5664 /(?=(a+?))(\1ab)/ 5665 aaab 5666 0: aab 5667 1: a 5668 2: aab 5669 5670 /^(?=(a+?))\1ab/ 5671 *** Failers 5672 No match 5673 aaab 5674 No match 5675 aaab 5676 No match 5677 5678 /([\w:]+::)?(\w+)$/ 5679 abcd 5680 0: abcd 5681 1: <unset> 5682 2: abcd 5683 xy:z:::abcd 5684 0: xy:z:::abcd 5685 1: xy:z::: 5686 2: abcd 5687 5688 /^[^bcd]*(c+)/ 5689 aexycd 5690 0: aexyc 5691 1: c 5692 5693 /(a*)b+/ 5694 caab 5695 0: aab 5696 1: aa 5697 5698 /([\w:]+::)?(\w+)$/ 5699 abcd 5700 0: abcd 5701 1: <unset> 5702 2: abcd 5703 xy:z:::abcd 5704 0: xy:z:::abcd 5705 1: xy:z::: 5706 2: abcd 5707 *** Failers 5708 0: Failers 5709 1: <unset> 5710 2: Failers 5711 abcd: 5712 No match 5713 abcd: 5714 No match 5715 5716 /^[^bcd]*(c+)/ 5717 aexycd 5718 0: aexyc 5719 1: c 5720 5721 /(>a+)ab/ 5722 5723 /(?>a+)b/ 5724 aaab 5725 0: aaab 5726 5727 /([[:]+)/ 5728 a:[b]: 5729 0: :[ 5730 1: :[ 5731 5732 /([[=]+)/ 5733 a=[b]= 5734 0: =[ 5735 1: =[ 5736 5737 /([[.]+)/ 5738 a.[b]. 5739 0: .[ 5740 1: .[ 5741 5742 /((?>a+)b)/ 5743 aaab 5744 0: aaab 5745 1: aaab 5746 5747 /(?>(a+))b/ 5748 aaab 5749 0: aaab 5750 1: aaa 5751 5752 /((?>[^()]+)|\([^()]*\))+/ 5753 ((abc(ade)ufh()()x 5754 0: abc(ade)ufh()()x 5755 1: x 5756 5757 /a\Z/ 5758 *** Failers 5759 No match 5760 aaab 5761 No match 5762 a\nb\n 5763 No match 5764 5765 /b\Z/ 5766 a\nb\n 5767 0: b 5768 5769 /b\z/ 5770 5771 /b\Z/ 5772 a\nb 5773 0: b 5774 5775 /b\z/ 5776 a\nb 5777 0: b 5778 *** Failers 5779 No match 5780 5781 /^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/ 5782 a 5783 0: a 5784 1: 5785 abc 5786 0: abc 5787 1: 5788 a-b 5789 0: a-b 5790 1: 5791 0-9 5792 0: 0-9 5793 1: 5794 a.b 5795 0: a.b 5796 1: 5797 5.6.7 5798 0: 5.6.7 5799 1: 5800 the.quick.brown.fox 5801 0: the.quick.brown.fox 5802 1: 5803 a100.b200.300c 5804 0: a100.b200.300c 5805 1: 5806 12-ab.1245 5807 0: 12-ab.1245 5808 1: 5809 *** Failers 5810 No match 5811 \ 5812 No match 5813 .a 5814 No match 5815 -a 5816 No match 5817 a- 5818 No match 5819 a. 5820 No match 5821 a_b 5822 No match 5823 a.- 5824 No match 5825 a.. 5826 No match 5827 ab..bc 5828 No match 5829 the.quick.brown.fox- 5830 No match 5831 the.quick.brown.fox. 5832 No match 5833 the.quick.brown.fox_ 5834 No match 5835 the.quick.brown.fox+ 5836 No match 5837 5838 /(?>.*)(?<=(abcd|wxyz))/ 5839 alphabetabcd 5840 0: alphabetabcd 5841 1: abcd 5842 endingwxyz 5843 0: endingwxyz 5844 1: wxyz 5845 *** Failers 5846 No match 5847 a rather long string that doesn't end with one of them 5848 No match 5849 5850 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/ 5851 word cat dog elephant mussel cow horse canary baboon snake shark otherword 5852 0: word cat dog elephant mussel cow horse canary baboon snake shark otherword 5853 word cat dog elephant mussel cow horse canary baboon snake shark 5854 No match 5855 5856 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/ 5857 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 5858 No match 5859 5860 /(?<=\d{3}(?!999))foo/ 5861 999foo 5862 0: foo 5863 123999foo 5864 0: foo 5865 *** Failers 5866 No match 5867 123abcfoo 5868 No match 5869 5870 /(?<=(?!...999)\d{3})foo/ 5871 999foo 5872 0: foo 5873 123999foo 5874 0: foo 5875 *** Failers 5876 No match 5877 123abcfoo 5878 No match 5879 5880 /(?<=\d{3}(?!999)...)foo/ 5881 123abcfoo 5882 0: foo 5883 123456foo 5884 0: foo 5885 *** Failers 5886 No match 5887 123999foo 5888 No match 5889 5890 /(?<=\d{3}...)(?<!999)foo/ 5891 123abcfoo 5892 0: foo 5893 123456foo 5894 0: foo 5895 *** Failers 5896 No match 5897 123999foo 5898 No match 5899 5900 /<a[\s]+href[\s]*=[\s]* # find <a href= 5901 ([\"\'])? # find single or double quote 5902 (?(1) (.*?)\1 | ([^\s]+)) # if quote found, match up to next matching 5903 # quote, otherwise match up to next space 5904 /isx 5905 <a href=abcd xyz 5906 0: <a href=abcd 5907 1: <unset> 5908 2: <unset> 5909 3: abcd 5910 <a href=\"abcd xyz pqr\" cats 5911 0: <a href="abcd xyz pqr" 5912 1: " 5913 2: abcd xyz pqr 5914 <a href=\'abcd xyz pqr\' cats 5915 0: <a href='abcd xyz pqr' 5916 1: ' 5917 2: abcd xyz pqr 5918 5919 /<a\s+href\s*=\s* # find <a href= 5920 (["'])? # find single or double quote 5921 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 5922 # quote, otherwise match up to next space 5923 /isx 5924 <a href=abcd xyz 5925 0: <a href=abcd 5926 1: <unset> 5927 2: <unset> 5928 3: abcd 5929 <a href=\"abcd xyz pqr\" cats 5930 0: <a href="abcd xyz pqr" 5931 1: " 5932 2: abcd xyz pqr 5933 <a href = \'abcd xyz pqr\' cats 5934 0: <a href = 'abcd xyz pqr' 5935 1: ' 5936 2: abcd xyz pqr 5937 5938 /<a\s+href(?>\s*)=(?>\s*) # find <a href= 5939 (["'])? # find single or double quote 5940 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 5941 # quote, otherwise match up to next space 5942 /isx 5943 <a href=abcd xyz 5944 0: <a href=abcd 5945 1: <unset> 5946 2: <unset> 5947 3: abcd 5948 <a href=\"abcd xyz pqr\" cats 5949 0: <a href="abcd xyz pqr" 5950 1: " 5951 2: abcd xyz pqr 5952 <a href = \'abcd xyz pqr\' cats 5953 0: <a href = 'abcd xyz pqr' 5954 1: ' 5955 2: abcd xyz pqr 5956 5957 /((Z)+|A)*/ 5958 ZABCDEFG 5959 0: ZA 5960 1: A 5961 2: Z 5962 5963 /(Z()|A)*/ 5964 ZABCDEFG 5965 0: ZA 5966 1: A 5967 2: 5968 5969 /(Z(())|A)*/ 5970 ZABCDEFG 5971 0: ZA 5972 1: A 5973 2: 5974 3: 5975 5976 /((?>Z)+|A)*/ 5977 ZABCDEFG 5978 0: ZA 5979 1: A 5980 5981 /((?>)+|A)*/ 5982 ZABCDEFG 5983 0: 5984 1: 5985 5986 /a*/g 5987 abbab 5988 0: a 5989 0: 5990 0: 5991 0: a 5992 0: 5993 0: 5994 5995 /^[\d-a]/ 5996 abcde 5997 0: a 5998 -things 5999 0: - 6000 0digit 6001 0: 0 6002 *** Failers 6003 No match 6004 bcdef 6005 No match 6006 6007 /[[:space:]]+/ 6008 > \x09\x0a\x0c\x0d\x0b< 6009 0: \x09\x0a\x0c\x0d\x0b 6010 6011 /[[:blank:]]+/ 6012 > \x09\x0a\x0c\x0d\x0b< 6013 0: \x09 6014 6015 /[\s]+/ 6016 > \x09\x0a\x0c\x0d\x0b< 6017 0: \x09\x0a\x0c\x0d\x0b 6018 6019 /\s+/ 6020 > \x09\x0a\x0c\x0d\x0b< 6021 0: \x09\x0a\x0c\x0d\x0b 6022 6023 /ab/x 6025 ab 6026 0: ab 6027 6028 /(?!\A)x/m 6029 a\nxb\n 6030 0: x 6031 6032 /(?!^)x/m 6033 a\nxb\n 6034 No match 6035 6036 /abc\Qabc\Eabc/ 6037 abcabcabc 6038 0: abcabcabc 6039 6040 /abc\Q(*+|\Eabc/ 6041 abc(*+|abc 6042 0: abc(*+|abc 6043 6044 / abc\Q abc\Eabc/x 6045 abc abcabc 6046 0: abc abcabc 6047 *** Failers 6048 No match 6049 abcabcabc 6050 No match 6051 6052 /abc#comment 6053 \Q#not comment 6054 literal\E/x 6055 abc#not comment\n literal 6056 0: abc#not comment\x0a literal 6057 6058 /abc#comment 6059 \Q#not comment 6060 literal/x 6061 abc#not comment\n literal 6062 0: abc#not comment\x0a literal 6063 6064 /abc#comment 6065 \Q#not comment 6066 literal\E #more comment 6067 /x 6068 abc#not comment\n literal 6069 0: abc#not comment\x0a literal 6070 6071 /abc#comment 6072 \Q#not comment 6073 literal\E #more comment/x 6074 abc#not comment\n literal 6075 0: abc#not comment\x0a literal 6076 6077 /\Qabc\$xyz\E/ 6078 abc\\\$xyz 6079 0: abc\$xyz 6080 6081 /\Qabc\E\$\Qxyz\E/ 6082 abc\$xyz 6083 0: abc$xyz 6084 6085 /\Gabc/ 6086 abc 6087 0: abc 6088 *** Failers 6089 No match 6090 xyzabc 6091 No match 6092 6093 /\Gabc./g 6094 abc1abc2xyzabc3 6095 0: abc1 6096 0: abc2 6097 6098 /abc./g 6099 abc1abc2xyzabc3 6100 0: abc1 6101 0: abc2 6102 0: abc3 6103 6104 /a(?x: b c )d/ 6105 XabcdY 6106 0: abcd 6107 *** Failers 6108 No match 6109 Xa b c d Y 6110 No match 6111 6112 /((?x)x y z | a b c)/ 6113 XabcY 6114 0: abc 6115 1: abc 6116 AxyzB 6117 0: xyz 6118 1: xyz 6119 6120 /(?i)AB(?-i)C/ 6121 XabCY 6122 0: abC 6123 *** Failers 6124 No match 6125 XabcY 6126 No match 6127 6128 /((?i)AB(?-i)C|D)E/ 6129 abCE 6130 0: abCE 6131 1: abC 6132 DE 6133 0: DE 6134 1: D 6135 *** Failers 6136 No match 6137 abcE 6138 No match 6139 abCe 6140 No match 6141 dE 6142 No match 6143 De 6144 No match 6145 6146 /(.*)\d+\1/ 6147 abc123abc 6148 0: abc123abc 6149 1: abc 6150 abc123bc 6151 0: bc123bc 6152 1: bc 6153 6154 /(.*)\d+\1/s 6155 abc123abc 6156 0: abc123abc 6157 1: abc 6158 abc123bc 6159 0: bc123bc 6160 1: bc 6161 6162 /((.*))\d+\1/ 6163 abc123abc 6164 0: abc123abc 6165 1: abc 6166 2: abc 6167 abc123bc 6168 0: bc123bc 6169 1: bc 6170 2: bc 6171 6172 /-- This tests for an IPv6 address in the form where it can have up to 6173 eight components, one and only one of which is empty. This must be 6174 an internal component. --/ 6175 6176 /^(?!:) # colon disallowed at start 6177 (?: # start of item 6178 (?: [0-9a-f]{1,4} | # 1-4 hex digits or 6179 (?(1)0 | () ) ) # if null previously matched, fail; else null 6180 : # followed by colon 6181 ){1,7} # end item; 1-7 of them required 6182 [0-9a-f]{1,4} $ # final hex number at end of string 6183 (?(1)|.) # check that there was an empty component 6184 /xi 6185 a123::a123 6186 0: a123::a123 6187 1: 6188 a123:b342::abcd 6189 0: a123:b342::abcd 6190 1: 6191 a123:b342::324e:abcd 6192 0: a123:b342::324e:abcd 6193 1: 6194 a123:ddde:b342::324e:abcd 6195 0: a123:ddde:b342::324e:abcd 6196 1: 6197 a123:ddde:b342::324e:dcba:abcd 6198 0: a123:ddde:b342::324e:dcba:abcd 6199 1: 6200 a123:ddde:9999:b342::324e:dcba:abcd 6201 0: a123:ddde:9999:b342::324e:dcba:abcd 6202 1: 6203 *** Failers 6204 No match 6205 1:2:3:4:5:6:7:8 6206 No match 6207 a123:bce:ddde:9999:b342::324e:dcba:abcd 6208 No match 6209 a123::9999:b342::324e:dcba:abcd 6210 No match 6211 abcde:2:3:4:5:6:7:8 6212 No match 6213 ::1 6214 No match 6215 abcd:fee0:123:: 6216 No match 6217 :1 6218 No match 6219 1: 6220 No match 6221 6222 /[z\Qa-d]\E]/ 6223 z 6224 0: z 6225 a 6226 0: a 6227 - 6228 0: - 6229 d 6230 0: d 6231 ] 6232 0: ] 6233 *** Failers 6234 0: a 6235 b 6236 No match 6237 6238 /[\z\C]/ 6239 z 6240 0: z 6241 C 6242 0: C 6243 6244 /\M/ 6245 M 6246 0: M 6247 6248 /(a+)*b/ 6249 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6250 No match 6251 6252 /(?i)reg(?:ul(?:[a]|ae)r|ex)/ 6253 REGular 6254 0: REGular 6255 regulaer 6256 0: regulaer 6257 Regex 6258 0: Regex 6259 regulr 6260 0: regul\xe4r 6261 6262 /[--]+/ 6263 6264 0: \xc5\xe6\xe5\xe4\xe0 6265 6266 0: \xc5\xe6\xe5\xe4\xff 6267 6268 0: \xc5\xe6\xe5\xe4\xc0 6269 6270 0: \xc5\xe6\xe5\xe4\xdf 6271 6272 /(?<=Z)X./ 6273 \x84XAZXB 6274 0: XB 6275 6276 /ab cd (?x) de fg/ 6277 ab cd defg 6278 0: ab cd defg 6279 6280 /ab cd(?x) de fg/ 6281 ab cddefg 6282 0: ab cddefg 6283 ** Failers 6284 No match 6285 abcddefg 6286 No match 6287 6288 /(?<![^f]oo)(bar)/ 6289 foobarX 6290 0: bar 6291 1: bar 6292 ** Failers 6293 No match 6294 boobarX 6295 No match 6296 6297 /(?<![^f])X/ 6298 offX 6299 0: X 6300 ** Failers 6301 No match 6302 onyX 6303 No match 6304 6305 /(?<=[^f])X/ 6306 onyX 6307 0: X 6308 ** Failers 6309 No match 6310 offX 6311 No match 6312 6313 /^/mg 6314 a\nb\nc\n 6315 0: 6316 0: 6317 0: 6318 \ 6319 0: 6320 6321 /(?<=C\n)^/mg 6322 A\nC\nC\n 6323 0: 6324 6325 /(?:(?(1)a|b)(X))+/ 6326 bXaX 6327 0: bXaX 6328 1: X 6329 6330 /(?:(?(1)\1a|b)(X|Y))+/ 6331 bXXaYYaY 6332 0: bXXaYYaY 6333 1: Y 6334 bXYaXXaX 6335 0: bX 6336 1: X 6337 6338 /()()()()()()()()()(?:(?(10)\10a|b)(X|Y))+/ 6339 bXXaYYaY 6340 0: bX 6341 1: 6342 2: 6343 3: 6344 4: 6345 5: 6346 6: 6347 7: 6348 8: 6349 9: 6350 10: X 6351 6352 /[[,abc,]+]/ 6353 abc] 6354 0: abc] 6355 a,b] 6356 0: a,b] 6357 [a,b,c] 6358 0: [a,b,c] 6359 6360 /(?-x: )/x 6361 A\x20B 6362 0: 6363 6364 "(?x)(?-x: \s*#\s*)" 6365 A # B 6366 0: # 6367 ** Failers 6368 No match 6369 # 6370 No match 6371 6372 "(?x-is)(?:(?-ixs) \s*#\s*) include" 6373 A #include 6374 0: #include 6375 ** Failers 6376 No match 6377 A#include 6378 No match 6379 A #Include 6380 No match 6381 6382 /a*b*\w/ 6383 aaabbbb 6384 0: aaabbbb 6385 aaaa 6386 0: aaaa 6387 a 6388 0: a 6389 6390 /a*b?\w/ 6391 aaabbbb 6392 0: aaabb 6393 aaaa 6394 0: aaaa 6395 a 6396 0: a 6397 6398 /a*b{0,4}\w/ 6399 aaabbbb 6400 0: aaabbbb 6401 aaaa 6402 0: aaaa 6403 a 6404 0: a 6405 6406 /a*b{0,}\w/ 6407 aaabbbb 6408 0: aaabbbb 6409 aaaa 6410 0: aaaa 6411 a 6412 0: a 6413 6414 /a*\d*\w/ 6415 0a 6416 0: 0a 6417 a 6418 0: a 6419 6420 /a*b *\w/x 6421 a 6422 0: a 6423 6424 /a*b#comment 6425 *\w/x 6426 a 6427 0: a 6428 6429 /a* b *\w/x 6430 a 6431 0: a 6432 6433 /^\w+=.*(\\\n.*)*/ 6434 abc=xyz\\\npqr 6435 0: abc=xyz\ 6436 6437 /(?=(\w+))\1:/ 6438 abcd: 6439 0: abcd: 6440 1: abcd 6441 6442 /^(?=(\w+))\1:/ 6443 abcd: 6444 0: abcd: 6445 1: abcd 6446 6447 /^\Eabc/ 6448 abc 6449 0: abc 6450 6451 /^[\Eabc]/ 6452 a 6453 0: a 6454 ** Failers 6455 No match 6456 E 6457 No match 6458 6459 /^[a-\Ec]/ 6460 b 6461 0: b 6462 ** Failers 6463 No match 6464 - 6465 No match 6466 E 6467 No match 6468 6469 /^[a\E\E-\Ec]/ 6470 b 6471 0: b 6472 ** Failers 6473 No match 6474 - 6475 No match 6476 E 6477 No match 6478 6479 /^[\E\Qa\E-\Qz\E]+/ 6480 b 6481 0: b 6482 ** Failers 6483 No match 6484 - 6485 No match 6486 6487 /^[a\Q]bc\E]/ 6488 a 6489 0: a 6490 ] 6491 0: ] 6492 c 6493 0: c 6494 6495 /^[a-\Q\E]/ 6496 a 6497 0: a 6498 - 6499 0: - 6500 6501 /^(a()*)*/ 6502 aaaa 6503 0: aaaa 6504 1: a 6505 2: 6506 6507 /^(?:a(?:(?:))*)*/ 6508 aaaa 6509 0: aaaa 6510 6511 /^(a()+)+/ 6512 aaaa 6513 0: aaaa 6514 1: a 6515 2: 6516 6517 /^(?:a(?:(?:))+)+/ 6518 aaaa 6519 0: aaaa 6520 6521 /(a){0,3}(?(1)b|(c|))*D/ 6522 abbD 6523 0: abbD 6524 1: a 6525 ccccD 6526 0: ccccD 6527 1: <unset> 6528 2: 6529 D 6530 0: D 6531 1: <unset> 6532 2: 6533 6534 /(a|)*\d/ 6535 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6536 No match 6537 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6538 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6539 1: 6540 6541 /(?>a|)*\d/ 6542 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6543 No match 6544 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6545 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6546 6547 /(?:a|)*\d/ 6548 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6549 No match 6550 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6551 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6552 6553 /\Z/g 6554 abc\n 6555 0: 6556 0: 6557 6558 /^(?s)(?>.*)(?<!\n)/ 6559 abc 6560 0: abc 6561 abc\n 6562 No match 6563 6564 /^(?![^\n]*\n\z)/ 6565 abc 6566 0: 6567 abc\n 6568 No match 6569 6570 /\z(?<!\n)/ 6571 abc 6572 0: 6573 abc\n 6574 No match 6575 6576 /(.*(.)?)*/ 6577 abcd 6578 0: abcd 6579 1: 6580 6581 /( (A | (?(1)0|) )* )/x 6582 abcd 6583 0: 6584 1: 6585 2: 6586 6587 /( ( (?(1)0|) )* )/x 6588 abcd 6589 0: 6590 1: 6591 2: 6592 6593 /( (?(1)0|)* )/x 6594 abcd 6595 0: 6596 1: 6597 6598 /[[:abcd:xyz]]/ 6599 a] 6600 0: a] 6601 :] 6602 0: :] 6603 6604 /[abc[:x\]pqr]/ 6605 a 6606 0: a 6607 [ 6608 0: [ 6609 : 6610 0: : 6611 ] 6612 0: ] 6613 p 6614 0: p 6615 6616 /.*[op][xyz]/ 6617 fooabcfoo 6618 No match 6619 6620 /(?(?=.*b)b|^)/ 6621 adc 6622 0: 6623 abc 6624 0: b 6625 6626 /(?(?=^.*b)b|^)/ 6627 adc 6628 0: 6629 abc 6630 No match 6631 6632 /(?(?=.*b)b|^)*/ 6633 adc 6634 0: 6635 abc 6636 0: 6637 6638 /(?(?=.*b)b|^)+/ 6639 adc 6640 0: 6641 abc 6642 0: b 6643 6644 /(?(?=b).*b|^d)/ 6645 abc 6646 0: b 6647 6648 /(?(?=.*b).*b|^d)/ 6649 abc 6650 0: ab 6651 6652 /^%((?(?=[a])[^%])|b)*%$/ 6653 %ab% 6654 0: %ab% 6655 1: 6656 6657 /(?i)a(?-i)b|c/ 6658 XabX 6659 0: ab 6660 XAbX 6661 0: Ab 6662 CcC 6663 0: c 6664 ** Failers 6665 No match 6666 XABX 6667 No match 6668 6669 /[\x00-\xff\s]+/ 6670 \x0a\x0b\x0c\x0d 6671 0: \x0a\x0b\x0c\x0d 6672 6673 /^\c/ 6674 ? 6675 0: ? 6676 6677 /(abc)\1/i 6678 abc 6679 No match 6680 6681 /(abc)\1/ 6682 abc 6683 No match 6684 6685 /[^a]*/i 6686 12abc 6687 0: 12 6688 12ABC 6689 0: 12 6690 6691 /[^a]*+/i 6692 12abc 6693 0: 12 6694 12ABC 6695 0: 12 6696 6697 /[^a]*?X/i 6698 ** Failers 6699 No match 6700 12abc 6701 No match 6702 12ABC 6703 No match 6704 6705 /[^a]+?X/i 6706 ** Failers 6707 No match 6708 12abc 6709 No match 6710 12ABC 6711 No match 6712 6713 /[^a]?X/i 6714 12aXbcX 6715 0: X 6716 12AXBCX 6717 0: X 6718 BCX 6719 0: CX 6720 6721 /[^a]??X/i 6722 12aXbcX 6723 0: X 6724 12AXBCX 6725 0: X 6726 BCX 6727 0: CX 6728 6729 /[^a]?+X/i 6730 12aXbcX 6731 0: cX 6732 12AXBCX 6733 0: CX 6734 BCX 6735 0: CX 6736 6737 /[^a]{2,3}/i 6738 abcdef 6739 0: bcd 6740 ABCDEF 6741 0: BCD 6742 6743 /[^a]{2,3}?/i 6744 abcdef 6745 0: bc 6746 ABCDEF 6747 0: BC 6748 6749 /[^a]{2,3}+/i 6750 abcdef 6751 0: bcd 6752 ABCDEF 6753 0: BCD 6754 6755 /((a|)+)+Z/ 6756 Z 6757 0: Z 6758 1: 6759 2: 6760 6761 /(a)b|(a)c/ 6762 ac 6763 0: ac 6764 1: <unset> 6765 2: a 6766 6767 /(?>(a))b|(a)c/ 6768 ac 6769 0: ac 6770 1: <unset> 6771 2: a 6772 6773 /(?=(a))ab|(a)c/ 6774 ac 6775 0: ac 6776 1: <unset> 6777 2: a 6778 6779 /((?>(a))b|(a)c)/ 6780 ac 6781 0: ac 6782 1: ac 6783 2: <unset> 6784 3: a 6785 6786 /((?>(a))b|(a)c)++/ 6787 ac 6788 0: ac 6789 1: ac 6790 2: <unset> 6791 3: a 6792 6793 /(?:(?>(a))b|(a)c)++/ 6794 ac 6795 0: ac 6796 1: <unset> 6797 2: a 6798 6799 /(?=(?>(a))b|(a)c)(..)/ 6800 ac 6801 0: ac 6802 1: <unset> 6803 2: a 6804 3: ac 6805 6806 /(?>(?>(a))b|(a)c)/ 6807 ac 6808 0: ac 6809 1: <unset> 6810 2: a 6811 6812 /(?:(?>([ab])))+a=/+ 6813 =ba= 6814 0: ba= 6815 0+ 6816 1: b 6817 6818 /(?>([ab]))+a=/+ 6819 =ba= 6820 0: ba= 6821 0+ 6822 1: b 6823 6824 /((?>(a+)b)+(aabab))/ 6825 aaaabaaabaabab 6826 0: aaaabaaabaabab 6827 1: aaaabaaabaabab 6828 2: aaa 6829 3: aabab 6830 6831 /(?>a+|ab)+?c/ 6832 aabc 6833 No match 6834 6835 /(?>a+|ab)+c/ 6836 aabc 6837 No match 6838 6839 /(?:a+|ab)+c/ 6840 aabc 6841 0: aabc 6842 6843 /(?(?=(a))a)/ 6844 a 6845 0: a 6846 1: a 6847 6848 /(?(?=(a))a)(b)/ 6849 ab 6850 0: ab 6851 1: a 6852 2: b 6853 6854 /^(?:a|ab)++c/ 6855 aaaabc 6856 No match 6857 6858 /^(?>a|ab)++c/ 6859 aaaabc 6860 No match 6861 6862 /^(?:a|ab)+c/ 6863 aaaabc 6864 0: aaaabc 6865 6866 /(?=abc){3}abc/+ 6867 abcabcabc 6868 0: abc 6869 0+ abcabc 6870 ** Failers 6871 No match 6872 xyz 6873 No match 6874 6875 /(?=abc)+abc/+ 6876 abcabcabc 6877 0: abc 6878 0+ abcabc 6879 ** Failers 6880 No match 6881 xyz 6882 No match 6883 6884 /(?=abc)++abc/+ 6885 abcabcabc 6886 0: abc 6887 0+ abcabc 6888 ** Failers 6889 No match 6890 xyz 6891 No match 6892 6893 /(?=abc){0}xyz/ 6894 xyz 6895 0: xyz 6896 6897 /(?=abc){1}xyz/ 6898 ** Failers 6899 No match 6900 xyz 6901 No match 6902 6903 /(?=(a))?./ 6904 ab 6905 0: a 6906 1: a 6907 bc 6908 0: b 6909 6910 /(?=(a))??./ 6911 ab 6912 0: a 6913 bc 6914 0: b 6915 6916 /^(?=(?1))?[az]([abc])d/ 6917 abd 6918 0: abd 6919 1: b 6920 zcdxx 6921 0: zcd 6922 1: c 6923 6924 /^(?!a){0}\w+/ 6925 aaaaa 6926 0: aaaaa 6927 6928 /(?<=(abc))?xyz/ 6929 abcxyz 6930 0: xyz 6931 1: abc 6932 pqrxyz 6933 0: xyz 6934 6935 /^[\g<a>]+/ 6936 ggg<<<aaa>>> 6937 0: ggg<<<aaa>>> 6938 ** Failers 6939 No match 6940 \\ga 6941 No match 6942 6943 /^[\ga]+/ 6944 gggagagaxyz 6945 0: gggagaga 6946 6947 /^[:a[:digit:]]+/ 6948 aaaa444:::Z 6949 0: aaaa444::: 6950 6951 /^[:a[:digit:]:b]+/ 6952 aaaa444:::bbbZ 6953 0: aaaa444:::bbb 6954 6955 /[:a]xxx[b:]/ 6956 :xxx: 6957 0: :xxx: 6958 6959 /(?<=a{2})b/i 6960 xaabc 6961 0: b 6962 ** Failers 6963 No match 6964 xabc 6965 No match 6966 6967 /(?<!a{2})b/i 6968 xabc 6969 0: b 6970 ** Failers 6971 No match 6972 xaabc 6973 No match 6974 6975 /(?<=a\h)c/ 6976 xa c 6977 0: c 6978 6979 /(?<=[^a]{2})b/ 6980 axxbc 6981 0: b 6982 aAAbc 6983 0: b 6984 ** Failers 6985 No match 6986 xaabc 6987 No match 6988 6989 /(?<=[^a]{2})b/i 6990 axxbc 6991 0: b 6992 ** Failers 6993 No match 6994 aAAbc 6995 No match 6996 xaabc 6997 No match 6998 6999 /(?<=a\H)c/ 7000 abc 7001 0: c 7002 7003 /(?<=a\V)c/ 7004 abc 7005 0: c 7006 7007 /(?<=a\v)c/ 7008 a\nc 7009 0: c 7010 7011 /(?(?=c)c|d)++Y/ 7012 XcccddYX 7013 0: cccddY 7014 7015 /(?(?=c)c|d)*+Y/ 7016 XcccddYX 7017 0: cccddY 7018 7019 /^(a{2,3}){2,}+a/ 7020 aaaaaaa 7021 0: aaaaaaa 7022 1: aaa 7023 ** Failers 7024 No match 7025 aaaaaa 7026 No match 7027 aaaaaaaaa 7028 No match 7029 7030 /^(a{2,3})++a/ 7031 ** Failers 7032 No match 7033 aaaaaa 7034 No match 7035 7036 /^(a{2,3})*+a/ 7037 ** Failers 7038 No match 7039 aaaaaa 7040 No match 7041 7042 /ab\Cde/ 7043 abXde 7044 0: abXde 7045 7046 /(?<=ab\Cde)X/ 7047 abZdeX 7048 0: X 7049 7050 /a[\CD]b/ 7051 aCb 7052 0: aCb 7053 aDb 7054 0: aDb 7055 7056 /a[\C-X]b/ 7057 aJb 7058 0: aJb 7059 7060 /\H\h\V\v/ 7061 X X\x0a 7062 0: X X\x0a 7063 X\x09X\x0b 7064 0: X\x09X\x0b 7065 ** Failers 7066 No match 7067 \xa0 X\x0a 7068 No match 7069 7070 /\H*\h+\V?\v{3,4}/ 7071 \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a 7072 0: \x09 \xa0X\x0a\x0b\x0c\x0d 7073 \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a 7074 0: \x09 \xa0\x0a\x0b\x0c\x0d 7075 \x09\x20\xa0\x0a\x0b\x0c 7076 0: \x09 \xa0\x0a\x0b\x0c 7077 ** Failers 7078 No match 7079 \x09\x20\xa0\x0a\x0b 7080 No match 7081 7082 /\H{3,4}/ 7083 XY ABCDE 7084 0: ABCD 7085 XY PQR ST 7086 0: PQR 7087 7088 /.\h{3,4}./ 7089 XY AB PQRS 7090 0: B P 7091 7092 /\h*X\h?\H+Y\H?Z/ 7093 >XNNNYZ 7094 0: XNNNYZ 7095 > X NYQZ 7096 0: X NYQZ 7097 ** Failers 7098 No match 7099 >XYZ 7100 No match 7101 > X NY Z 7102 No match 7103 7104 /\v*X\v?Y\v+Z\V*\x0a\V+\x0b\V{2,3}\x0c/ 7105 >XY\x0aZ\x0aA\x0bNN\x0c 7106 0: XY\x0aZ\x0aA\x0bNN\x0c 7107 >\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c 7108 0: \x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c 7109 7110 /(foo)\Kbar/ 7111 foobar 7112 0: bar 7113 1: foo 7114 7115 /(foo)(\Kbar|baz)/ 7116 foobar 7117 0: bar 7118 1: foo 7119 2: bar 7120 foobaz 7121 0: foobaz 7122 1: foo 7123 2: baz 7124 7125 /(foo\Kbar)baz/ 7126 foobarbaz 7127 0: barbaz 7128 1: foobar 7129 7130 /abc\K|def\K/g+ 7131 Xabcdefghi 7132 0: 7133 0+ defghi 7134 0: 7135 0+ ghi 7136 7137 /ab\Kc|de\Kf/g+ 7138 Xabcdefghi 7139 0: c 7140 0+ defghi 7141 0: f 7142 0+ ghi 7143 7144 /(?=C)/g+ 7145 ABCDECBA 7146 0: 7147 0+ CDECBA 7148 0: 7149 0+ CBA 7150 7151 /^abc\K/+ 7152 abcdef 7153 0: 7154 0+ def 7155 ** Failers 7156 No match 7157 defabcxyz 7158 No match 7159 7160 /^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/ 7161 ababababbbabZXXXX 7162 0: ababababbbabZ 7163 1: ab 7164 2: b 7165 7166 /(?<A>tom|bon)-\g{A}/ 7167 tom-tom 7168 0: tom-tom 7169 1: tom 7170 bon-bon 7171 0: bon-bon 7172 1: bon 7173 7174 /(^(a|b\g{-1}))/ 7175 bacxxx 7176 No match 7177 7178 /(?|(abc)|(xyz))\1/ 7179 abcabc 7180 0: abcabc 7181 1: abc 7182 xyzxyz 7183 0: xyzxyz 7184 1: xyz 7185 ** Failers 7186 No match 7187 abcxyz 7188 No match 7189 xyzabc 7190 No match 7191 7192 /(?|(abc)|(xyz))(?1)/ 7193 abcabc 7194 0: abcabc 7195 1: abc 7196 xyzabc 7197 0: xyzabc 7198 1: xyz 7199 ** Failers 7200 No match 7201 xyzxyz 7202 No match 7203 7204 /^X(?5)(a)(?|(b)|(q))(c)(d)(Y)/ 7205 XYabcdY 7206 0: XYabcdY 7207 1: a 7208 2: b 7209 3: c 7210 4: d 7211 5: Y 7212 7213 /^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)/ 7214 XYabcdY 7215 0: XYabcdY 7216 1: a 7217 2: b 7218 3: <unset> 7219 4: <unset> 7220 5: c 7221 6: d 7222 7: Y 7223 7224 /^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)/ 7225 XYabcdY 7226 0: XYabcdY 7227 1: a 7228 2: b 7229 3: <unset> 7230 4: <unset> 7231 5: c 7232 6: d 7233 7: Y 7234 7235 /(?'abc'\w+):\k<abc>{2}/ 7236 a:aaxyz 7237 0: a:aa 7238 1: a 7239 ab:ababxyz 7240 0: ab:abab 7241 1: ab 7242 ** Failers 7243 No match 7244 a:axyz 7245 No match 7246 ab:abxyz 7247 No match 7248 7249 /(?'abc'\w+):\g{abc}{2}/ 7250 a:aaxyz 7251 0: a:aa 7252 1: a 7253 ab:ababxyz 7254 0: ab:abab 7255 1: ab 7256 ** Failers 7257 No match 7258 a:axyz 7259 No match 7260 ab:abxyz 7261 No match 7262 7263 /^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x 7264 abd 7265 0: abd 7266 1: a 7267 ce 7268 0: ce 7269 7270 /^(a.)\g-1Z/ 7271 aXaXZ 7272 0: aXaXZ 7273 1: aX 7274 7275 /^(a.)\g{-1}Z/ 7276 aXaXZ 7277 0: aXaXZ 7278 1: aX 7279 7280 /^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) /x 7281 abcd 7282 0: ab 7283 7284 /(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT)) 7285 (?(DEFINE) 7286 (?<NAME_PAT>[a-z]+) 7287 (?<ADDRESS_PAT>\d+) 7288 )/x 7289 metcalfe 33 7290 0: metcalfe 33 7291 1: metcalfe 7292 2: 33 7293 7294 /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/ 7295 1.2.3.4 7296 0: 1.2.3.4 7297 1: <unset> 7298 2: .4 7299 131.111.10.206 7300 0: 131.111.10.206 7301 1: <unset> 7302 2: .206 7303 10.0.0.0 7304 0: 10.0.0.0 7305 1: <unset> 7306 2: .0 7307 ** Failers 7308 No match 7309 10.6 7310 No match 7311 455.3.4.5 7312 No match 7313 7314 /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/ 7315 1.2.3.4 7316 0: 1.2.3.4 7317 1: .4 7318 131.111.10.206 7319 0: 131.111.10.206 7320 1: .206 7321 10.0.0.0 7322 0: 10.0.0.0 7323 1: .0 7324 ** Failers 7325 No match 7326 10.6 7327 No match 7328 455.3.4.5 7329 No match 7330 7331 /^(\w++|\s++)*$/ 7332 now is the time for all good men to come to the aid of the party 7333 0: now is the time for all good men to come to the aid of the party 7334 1: party 7335 *** Failers 7336 No match 7337 this is not a line with only words and spaces! 7338 No match 7339 7340 /(\d++)(\w)/ 7341 12345a 7342 0: 12345a 7343 1: 12345 7344 2: a 7345 *** Failers 7346 No match 7347 12345+ 7348 No match 7349 7350 /a++b/ 7351 aaab 7352 0: aaab 7353 7354 /(a++b)/ 7355 aaab 7356 0: aaab 7357 1: aaab 7358 7359 /(a++)b/ 7360 aaab 7361 0: aaab 7362 1: aaa 7363 7364 /([^()]++|\([^()]*\))+/ 7365 ((abc(ade)ufh()()x 7366 0: abc(ade)ufh()()x 7367 1: x 7368 7369 /\(([^()]++|\([^()]+\))+\)/ 7370 (abc) 7371 0: (abc) 7372 1: abc 7373 (abc(def)xyz) 7374 0: (abc(def)xyz) 7375 1: xyz 7376 *** Failers 7377 No match 7378 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 7379 No match 7380 7381 /^([^()]|\((?1)*\))*$/ 7382 abc 7383 0: abc 7384 1: c 7385 a(b)c 7386 0: a(b)c 7387 1: c 7388 a(b(c))d 7389 0: a(b(c))d 7390 1: d 7391 *** Failers) 7392 No match 7393 a(b(c)d 7394 No match 7395 7396 /^>abc>([^()]|\((?1)*\))*<xyz<$/ 7397 >abc>123<xyz< 7398 0: >abc>123<xyz< 7399 1: 3 7400 >abc>1(2)3<xyz< 7401 0: >abc>1(2)3<xyz< 7402 1: 3 7403 >abc>(1(2)3)<xyz< 7404 0: >abc>(1(2)3)<xyz< 7405 1: (1(2)3) 7406 7407 /^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i 7408 1221 7409 0: 1221 7410 1: 1221 7411 2: 1 7412 Satanoscillatemymetallicsonatas 7413 0: Satanoscillatemymetallicsonatas 7414 1: <unset> 7415 2: <unset> 7416 3: Satanoscillatemymetallicsonatas 7417 4: S 7418 AmanaplanacanalPanama 7419 0: AmanaplanacanalPanama 7420 1: <unset> 7421 2: <unset> 7422 3: AmanaplanacanalPanama 7423 4: A 7424 AblewasIereIsawElba 7425 0: AblewasIereIsawElba 7426 1: <unset> 7427 2: <unset> 7428 3: AblewasIereIsawElba 7429 4: A 7430 *** Failers 7431 No match 7432 Thequickbrownfox 7433 No match 7434 7435 /^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/ 7436 12 7437 0: 12 7438 1: 12 7439 (((2+2)*-3)-7) 7440 0: (((2+2)*-3)-7) 7441 1: (((2+2)*-3)-7) 7442 2: - 7443 -12 7444 0: -12 7445 1: -12 7446 *** Failers 7447 No match 7448 ((2+2)*-3)-7) 7449 No match 7450 7451 /^(x(y|(?1){2})z)/ 7452 xyz 7453 0: xyz 7454 1: xyz 7455 2: y 7456 xxyzxyzz 7457 0: xxyzxyzz 7458 1: xxyzxyzz 7459 2: xyzxyz 7460 *** Failers 7461 No match 7462 xxyzz 7463 No match 7464 xxyzxyzxyzz 7465 No match 7466 7467 /((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/x 7468 <> 7469 0: <> 7470 1: <> 7471 2: <> 7472 <abcd> 7473 0: <abcd> 7474 1: <abcd> 7475 2: <abcd> 7476 <abc <123> hij> 7477 0: <abc <123> hij> 7478 1: <abc <123> hij> 7479 2: <abc <123> hij> 7480 <abc <def> hij> 7481 0: <def> 7482 1: <def> 7483 2: <def> 7484 <abc<>def> 7485 0: <abc<>def> 7486 1: <abc<>def> 7487 2: <abc<>def> 7488 <abc<> 7489 0: <> 7490 1: <> 7491 2: <> 7492 *** Failers 7493 No match 7494 <abc 7495 No match 7496 7497 /^a+(*FAIL)/ 7498 aaaaaa 7499 No match 7500 7501 /a+b?c+(*FAIL)/ 7502 aaabccc 7503 No match 7504 7505 /a+b?(*PRUNE)c+(*FAIL)/ 7506 aaabccc 7507 No match 7508 7509 /a+b?(*COMMIT)c+(*FAIL)/ 7510 aaabccc 7511 No match 7512 7513 /a+b?(*SKIP)c+(*FAIL)/ 7514 aaabcccaaabccc 7515 No match 7516 7517 /^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 7518 aaaxxxxxx 7519 0: aaaxxxxxx 7520 aaa++++++ 7521 0: aaa 7522 bbbxxxxx 7523 0: bbbxxxxx 7524 bbb+++++ 7525 0: bbb 7526 cccxxxx 7527 0: cccxxxx 7528 ccc++++ 7529 0: ccc 7530 dddddddd 7531 0: ddd 7532 7533 /^(aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 7534 aaaxxxxxx 7535 0: aaaxxxxxx 7536 1: aaaxxxxxx 7537 aaa++++++ 7538 0: aaa 7539 1: aaa 7540 bbbxxxxx 7541 0: bbbxxxxx 7542 1: bbbxxxxx 7543 bbb+++++ 7544 0: bbb 7545 1: bbb 7546 cccxxxx 7547 0: cccxxxx 7548 1: cccxxxx 7549 ccc++++ 7550 0: ccc 7551 1: ccc 7552 dddddddd 7553 0: ddd 7554 1: ddd 7555 7556 /a+b?(*THEN)c+(*FAIL)/ 7557 aaabccc 7558 No match 7559 7560 /(A (A|B(*ACCEPT)|C) D)(E)/x 7561 AB 7562 0: AB 7563 1: AB 7564 2: B 7565 ABX 7566 0: AB 7567 1: AB 7568 2: B 7569 AADE 7570 0: AADE 7571 1: AAD 7572 2: A 7573 3: E 7574 ACDE 7575 0: ACDE 7576 1: ACD 7577 2: C 7578 3: E 7579 ** Failers 7580 No match 7581 AD 7582 No match 7583 7584 /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i 7585 1221 7586 0: 1221 7587 1: 1221 7588 2: 1 7589 Satan, oscillate my metallic sonatas! 7590 0: Satan, oscillate my metallic sonatas! 7591 1: <unset> 7592 2: <unset> 7593 3: Satan, oscillate my metallic sonatas 7594 4: S 7595 A man, a plan, a canal: Panama! 7596 0: A man, a plan, a canal: Panama! 7597 1: <unset> 7598 2: <unset> 7599 3: A man, a plan, a canal: Panama 7600 4: A 7601 Able was I ere I saw Elba. 7602 0: Able was I ere I saw Elba. 7603 1: <unset> 7604 2: <unset> 7605 3: Able was I ere I saw Elba 7606 4: A 7607 *** Failers 7608 No match 7609 The quick brown fox 7610 No match 7611 7612 /^((.)(?1)\2|.)$/ 7613 a 7614 0: a 7615 1: a 7616 aba 7617 0: aba 7618 1: aba 7619 2: a 7620 aabaa 7621 0: aabaa 7622 1: aabaa 7623 2: a 7624 abcdcba 7625 0: abcdcba 7626 1: abcdcba 7627 2: a 7628 pqaabaaqp 7629 0: pqaabaaqp 7630 1: pqaabaaqp 7631 2: p 7632 ablewasiereisawelba 7633 0: ablewasiereisawelba 7634 1: ablewasiereisawelba 7635 2: a 7636 rhubarb 7637 No match 7638 the quick brown fox 7639 No match 7640 7641 /(a)(?<=b(?1))/ 7642 baz 7643 0: a 7644 1: a 7645 ** Failers 7646 No match 7647 caz 7648 No match 7649 7650 /(?<=b(?1))(a)/ 7651 zbaaz 7652 0: a 7653 1: a 7654 ** Failers 7655 No match 7656 aaa 7657 No match 7658 7659 /(?<X>a)(?<=b(?&X))/ 7660 baz 7661 0: a 7662 1: a 7663 7664 /^(?|(abc)|(def))\1/ 7665 abcabc 7666 0: abcabc 7667 1: abc 7668 defdef 7669 0: defdef 7670 1: def 7671 ** Failers 7672 No match 7673 abcdef 7674 No match 7675 defabc 7676 No match 7677 7678 /^(?|(abc)|(def))(?1)/ 7679 abcabc 7680 0: abcabc 7681 1: abc 7682 defabc 7683 0: defabc 7684 1: def 7685 ** Failers 7686 No match 7687 defdef 7688 No match 7689 abcdef 7690 No match 7691 7692 /(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/xJ 7693 a\"aaaaa 7694 0: a"aaaaa 7695 1: " 7696 2: <unset> 7697 3: " 7698 b\"aaaaa 7699 0: b"aaaaa 7700 1: <unset> 7701 2: <unset> 7702 3: <unset> 7703 4: " 7704 5: <unset> 7705 6: " 7706 ** Failers 7707 No match 7708 b\"11111 7709 No match 7710 7711 /(?:(?1)|B)(A(*F)|C)/ 7712 ABCD 7713 0: BC 7714 1: C 7715 CCD 7716 0: CC 7717 1: C 7718 ** Failers 7719 No match 7720 CAD 7721 No match 7722 7723 /^(?:(?1)|B)(A(*F)|C)/ 7724 CCD 7725 0: CC 7726 1: C 7727 BCD 7728 0: BC 7729 1: C 7730 ** Failers 7731 No match 7732 ABCD 7733 No match 7734 CAD 7735 No match 7736 BAD 7737 No match 7738 7739 /(?:(?1)|B)(A(*ACCEPT)XX|C)D/ 7740 AAD 7741 0: AA 7742 1: A 7743 ACD 7744 0: ACD 7745 1: C 7746 BAD 7747 0: BA 7748 1: A 7749 BCD 7750 0: BCD 7751 1: C 7752 BAX 7753 0: BA 7754 1: A 7755 ** Failers 7756 No match 7757 ACX 7758 No match 7759 ABC 7760 No match 7761 7762 /(?(DEFINE)(A))B(?1)C/ 7763 BAC 7764 0: BAC 7765 7766 /(?(DEFINE)((A)\2))B(?1)C/ 7767 BAAC 7768 0: BAAC 7769 7770 /(?<pn> \( ( [^()]++ | (?&pn) )* \) )/x 7771 (ab(cd)ef) 7772 0: (ab(cd)ef) 7773 1: (ab(cd)ef) 7774 2: ef 7775 7776 /^(?=a(*SKIP)b|ac)/ 7777 ** Failers 7778 No match 7779 ac 7780 No match 7781 7782 /^(?=a(*PRUNE)b)/ 7783 ab 7784 0: 7785 ** Failers 7786 No match 7787 ac 7788 No match 7789 7790 /^(?=a(*ACCEPT)b)/ 7791 ac 7792 0: 7793 7794 /(?>a\Kb)/ 7795 ab 7796 0: b 7797 7798 /((?>a\Kb))/ 7799 ab 7800 0: b 7801 1: ab 7802 7803 /(a\Kb)/ 7804 ab 7805 0: b 7806 1: ab 7807 7808 /^a\Kcz|ac/ 7809 ac 7810 0: ac 7811 7812 /(?>a\Kbz|ab)/ 7813 ab 7814 0: ab 7815 7816 /^(?&t)(?(DEFINE)(?<t>a\Kb))$/ 7817 ab 7818 0: b 7819 7820 /^([^()]|\((?1)*\))*$/ 7821 a(b)c 7822 0: a(b)c 7823 1: c 7824 a(b(c)d)e 7825 0: a(b(c)d)e 7826 1: e 7827 7828 /(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))/ 7829 0 7830 0: 0 7831 1: 0 7832 00 7833 0: 00 7834 1: 00 7835 2: 0 7836 0000 7837 0: 0000 7838 1: 0000 7839 2: 0 7840 7841 /(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))/ 7842 0 7843 0: 0 7844 1: 0 7845 2: 0 7846 00 7847 0: 0 7848 1: 0 7849 2: 0 7850 0000 7851 0: 0 7852 1: 0 7853 2: 0 7854 7855 /--- This one does fail, as expected, in Perl. It needs the complex item at the 7856 end of the pattern. A single letter instead of (B|D) makes it not fail, 7857 which I think is a Perl bug. --- / 7858 7859 /A(*COMMIT)(B|D)/ 7860 ACABX 7861 No match 7862 7863 /--- Check the use of names for failure ---/ 7864 7865 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/K 7866 ** Failers 7867 No match 7868 AC 7869 No match, mark = A 7870 CB 7871 No match, mark = B 7872 7873 /--- Force no study, otherwise mark is not seen. The studied version is in 7874 test 2 because it isn't Perl-compatible. ---/ 7875 7876 /(*MARK:A)(*SKIP:B)(C|X)/KSS 7877 C 7878 0: C 7879 1: C 7880 MK: A 7881 D 7882 No match, mark = A 7883 7884 /^(A(*THEN:A)B|C(*THEN:B)D)/K 7885 ** Failers 7886 No match 7887 CB 7888 No match, mark = B 7889 7890 /^(?:A(*THEN:A)B|C(*THEN:B)D)/K 7891 CB 7892 No match, mark = B 7893 7894 /^(?>A(*THEN:A)B|C(*THEN:B)D)/K 7895 CB 7896 No match, mark = B 7897 7898 /--- This should succeed, as the skip causes bump to offset 1 (the mark). Note 7899 that we have to have something complicated such as (B|Z) at the end because, 7900 for Perl, a simple character somehow causes an unwanted optimization to mess 7901 with the handling of backtracking verbs. ---/ 7902 7903 /A(*MARK:A)A+(*SKIP:A)(B|Z) | AC/xK 7904 AAAC 7905 0: AC 7906 7907 /--- Test skipping over a non-matching mark. ---/ 7908 7909 /A(*MARK:A)A+(*MARK:B)(*SKIP:A)(B|Z) | AC/xK 7910 AAAC 7911 0: AC 7912 7913 /--- Check shorthand for MARK ---/ 7914 7915 /A(*:A)A+(*SKIP:A)(B|Z) | AC/xK 7916 AAAC 7917 0: AC 7918 7919 /--- Don't loop! Force no study, otherwise mark is not seen. ---/ 7920 7921 /(*:A)A+(*SKIP:A)(B|Z)/KSS 7922 AAAC 7923 No match, mark = A 7924 7925 /--- This should succeed, as a non-existent skip name disables the skip ---/ 7926 7927 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/xK 7928 AAAC 7929 0: AC 7930 7931 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC(*:B)/xK 7932 AAAC 7933 0: AC 7934 MK: B 7935 7936 /--- COMMIT at the start of a pattern should act like an anchor. Again, 7937 however, we need the complication for Perl. ---/ 7938 7939 /(*COMMIT)(A|P)(B|P)(C|P)/ 7940 ABCDEFG 7941 0: ABC 7942 1: A 7943 2: B 7944 3: C 7945 ** Failers 7946 No match 7947 DEFGABC 7948 No match 7949 7950 /--- COMMIT inside an atomic group can't stop backtracking over the group. ---/ 7951 7952 /(\w+)(?>b(*COMMIT))\w{2}/ 7953 abbb 7954 0: abbb 7955 1: a 7956 7957 /(\w+)b(*COMMIT)\w{2}/ 7958 abbb 7959 No match 7960 7961 /--- Check opening parens in comment when seeking forward reference. ---/ 7962 7963 /(?&t)(?#()(?(DEFINE)(?<t>a))/ 7964 bac 7965 0: a 7966 7967 /--- COMMIT should override THEN ---/ 7968 7969 /(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/ 7970 yes 7971 No match 7972 7973 /(?>(*COMMIT)(yes|no)(*THEN)(*F))?/ 7974 yes 7975 No match 7976 7977 /b?(*SKIP)c/ 7978 bc 7979 0: bc 7980 abc 7981 0: bc 7982 7983 /(*SKIP)bc/ 7984 a 7985 No match 7986 7987 /(*SKIP)b/ 7988 a 7989 No match 7990 7991 /(?P<abn>(?P=abn)xxx|)+/ 7992 xxx 7993 0: 7994 1: 7995 7996 /(?i:([^b]))(?1)/ 7997 aa 7998 0: aa 7999 1: a 8000 aA 8001 0: aA 8002 1: a 8003 ** Failers 8004 0: ** 8005 1: * 8006 ab 8007 No match 8008 aB 8009 No match 8010 Ba 8011 No match 8012 ba 8013 No match 8014 8015 /^(?&t)*+(?(DEFINE)(?<t>a))\w$/ 8016 aaaaaaX 8017 0: aaaaaaX 8018 ** Failers 8019 No match 8020 aaaaaa 8021 No match 8022 8023 /^(?&t)*(?(DEFINE)(?<t>a))\w$/ 8024 aaaaaaX 8025 0: aaaaaaX 8026 aaaaaa 8027 0: aaaaaa 8028 8029 /^(a)*+(\w)/ 8030 aaaaX 8031 0: aaaaX 8032 1: a 8033 2: X 8034 YZ 8035 0: Y 8036 1: <unset> 8037 2: Y 8038 ** Failers 8039 No match 8040 aaaa 8041 No match 8042 8043 /^(?:a)*+(\w)/ 8044 aaaaX 8045 0: aaaaX 8046 1: X 8047 YZ 8048 0: Y 8049 1: Y 8050 ** Failers 8051 No match 8052 aaaa 8053 No match 8054 8055 /^(a)++(\w)/ 8056 aaaaX 8057 0: aaaaX 8058 1: a 8059 2: X 8060 ** Failers 8061 No match 8062 aaaa 8063 No match 8064 YZ 8065 No match 8066 8067 /^(?:a)++(\w)/ 8068 aaaaX 8069 0: aaaaX 8070 1: X 8071 ** Failers 8072 No match 8073 aaaa 8074 No match 8075 YZ 8076 No match 8077 8078 /^(a)?+(\w)/ 8079 aaaaX 8080 0: aa 8081 1: a 8082 2: a 8083 YZ 8084 0: Y 8085 1: <unset> 8086 2: Y 8087 8088 /^(?:a)?+(\w)/ 8089 aaaaX 8090 0: aa 8091 1: a 8092 YZ 8093 0: Y 8094 1: Y 8095 8096 /^(a){2,}+(\w)/ 8097 aaaaX 8098 0: aaaaX 8099 1: a 8100 2: X 8101 ** Failers 8102 No match 8103 aaa 8104 No match 8105 YZ 8106 No match 8107 8108 /^(?:a){2,}+(\w)/ 8109 aaaaX 8110 0: aaaaX 8111 1: X 8112 ** Failers 8113 No match 8114 aaa 8115 No match 8116 YZ 8117 No match 8118 8119 /(a|)*(?1)b/ 8120 b 8121 0: b 8122 1: 8123 ab 8124 0: ab 8125 1: 8126 aab 8127 0: aab 8128 1: 8129 8130 /(a)++(?1)b/ 8131 ** Failers 8132 No match 8133 ab 8134 No match 8135 aab 8136 No match 8137 8138 /(a)*+(?1)b/ 8139 ** Failers 8140 No match 8141 ab 8142 No match 8143 aab 8144 No match 8145 8146 /(?1)(?:(b)){0}/ 8147 b 8148 0: b 8149 8150 /(foo ( \( ((?:(?> [^()]+ )|(?2))*) \) ) )/x 8151 foo(bar(baz)+baz(bop)) 8152 0: foo(bar(baz)+baz(bop)) 8153 1: foo(bar(baz)+baz(bop)) 8154 2: (bar(baz)+baz(bop)) 8155 3: bar(baz)+baz(bop) 8156 8157 /(A (A|B(*ACCEPT)|C) D)(E)/x 8158 AB 8159 0: AB 8160 1: AB 8161 2: B 8162 8163 /\A.*?(a|bc)/ 8164 ba 8165 0: ba 8166 1: a 8167 8168 /\A.*?(?:a|bc)++/ 8169 ba 8170 0: ba 8171 8172 /\A.*?(a|bc)++/ 8173 ba 8174 0: ba 8175 1: a 8176 8177 /\A.*?(?:a|bc|d)/ 8178 ba 8179 0: ba 8180 8181 /(?:(b))++/ 8182 beetle 8183 0: b 8184 1: b 8185 8186 /(?(?=(a(*ACCEPT)z))a)/ 8187 a 8188 0: a 8189 1: a 8190 8191 /^(a)(?1)+ab/ 8192 aaaab 8193 0: aaaab 8194 1: a 8195 8196 /^(a)(?1)++ab/ 8197 aaaab 8198 No match 8199 8200 /^(?=a(*:M))aZ/K 8201 aZbc 8202 0: aZ 8203 MK: M 8204 8205 /^(?!(*:M)b)aZ/K 8206 aZbc 8207 0: aZ 8208 8209 /(?(DEFINE)(a))?b(?1)/ 8210 backgammon 8211 0: ba 8212 8213 /^\N+/ 8214 abc\ndef 8215 0: abc 8216 8217 /^\N{1,}/ 8218 abc\ndef 8219 0: abc 8220 8221 /(?(R)a+|(?R)b)/ 8222 aaaabcde 8223 0: aaaab 8224 8225 /(?(R)a+|((?R))b)/ 8226 aaaabcde 8227 0: aaaab 8228 1: aaaa 8229 8230 /((?(R)a+|(?1)b))/ 8231 aaaabcde 8232 0: aaaab 8233 1: aaaab 8234 8235 /((?(R1)a+|(?1)b))/ 8236 aaaabcde 8237 0: aaaab 8238 1: aaaab 8239 8240 /((?(R)a|(?1)))*/ 8241 aaa 8242 0: aaa 8243 1: a 8244 8245 /((?(R)a|(?1)))+/ 8246 aaa 8247 0: aaa 8248 1: a 8249 8250 /a(*:any 8251 name)/K 8252 abc 8253 0: a 8254 MK: any \x0aname 8255 8256 /(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))/ 8257 a 8258 0: a 8259 ba 8260 0: a 8261 bba 8262 0: a 8263 8264 /--- Checking revised (*THEN) handling ---/ 8265 8266 /--- Capture ---/ 8267 8268 /^.*? (a(*THEN)b) c/x 8269 aabc 8270 No match 8271 8272 /^.*? (a(*THEN)b|(*F)) c/x 8273 aabc 8274 0: aabc 8275 1: ab 8276 8277 /^.*? ( (a(*THEN)b) | (*F) ) c/x 8278 aabc 8279 0: aabc 8280 1: ab 8281 2: ab 8282 8283 /^.*? ( (a(*THEN)b) ) c/x 8284 aabc 8285 No match 8286 8287 /--- Non-capture ---/ 8288 8289 /^.*? (?:a(*THEN)b) c/x 8290 aabc 8291 No match 8292 8293 /^.*? (?:a(*THEN)b|(*F)) c/x 8294 aabc 8295 0: aabc 8296 8297 /^.*? (?: (?:a(*THEN)b) | (*F) ) c/x 8298 aabc 8299 0: aabc 8300 8301 /^.*? (?: (?:a(*THEN)b) ) c/x 8302 aabc 8303 No match 8304 8305 /--- Atomic ---/ 8306 8307 /^.*? (?>a(*THEN)b) c/x 8308 aabc 8309 No match 8310 8311 /^.*? (?>a(*THEN)b|(*F)) c/x 8312 aabc 8313 0: aabc 8314 8315 /^.*? (?> (?>a(*THEN)b) | (*F) ) c/x 8316 aabc 8317 0: aabc 8318 8319 /^.*? (?> (?>a(*THEN)b) ) c/x 8320 aabc 8321 No match 8322 8323 /--- Possessive capture ---/ 8324 8325 /^.*? (a(*THEN)b)++ c/x 8326 aabc 8327 No match 8328 8329 /^.*? (a(*THEN)b|(*F))++ c/x 8330 aabc 8331 0: aabc 8332 1: ab 8333 8334 /^.*? ( (a(*THEN)b)++ | (*F) )++ c/x 8335 aabc 8336 0: aabc 8337 1: ab 8338 2: ab 8339 8340 /^.*? ( (a(*THEN)b)++ )++ c/x 8341 aabc 8342 No match 8343 8344 /--- Possessive non-capture ---/ 8345 8346 /^.*? (?:a(*THEN)b)++ c/x 8347 aabc 8348 No match 8349 8350 /^.*? (?:a(*THEN)b|(*F))++ c/x 8351 aabc 8352 0: aabc 8353 8354 /^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c/x 8355 aabc 8356 0: aabc 8357 8358 /^.*? (?: (?:a(*THEN)b)++ )++ c/x 8359 aabc 8360 No match 8361 8362 /--- Condition assertion ---/ 8363 8364 /^(?(?=a(*THEN)b)ab|ac)/ 8365 ac 8366 0: ac 8367 8368 /--- Condition ---/ 8369 8370 /^.*?(?(?=a)a|b(*THEN)c)/ 8371 ba 8372 No match 8373 8374 /^.*?(?:(?(?=a)a|b(*THEN)c)|d)/ 8375 ba 8376 0: ba 8377 8378 /^.*?(?(?=a)a(*THEN)b|c)/ 8379 ac 8380 No match 8381 8382 /--- Assertion ---/ 8383 8384 /^.*(?=a(*THEN)b)/ 8385 aabc 8386 0: a 8387 8388 /------------------------------/ 8389 8390 /(?>a(*:m))/imsxSK 8391 a 8392 0: a 8393 MK: m 8394 8395 /(?>(a)(*:m))/imsxSK 8396 a 8397 0: a 8398 1: a 8399 MK: m 8400 8401 /(?<=a(*ACCEPT)b)c/ 8402 xacd 8403 0: c 8404 8405 /(?<=(a(*ACCEPT)b))c/ 8406 xacd 8407 0: c 8408 1: a 8409 8410 /(?<=(a(*COMMIT)b))c/ 8411 xabcd 8412 0: c 8413 1: ab 8414 ** Failers 8415 No match 8416 xacd 8417 No match 8418 8419 /(?<!a(*FAIL)b)c/ 8420 xcd 8421 0: c 8422 acd 8423 0: c 8424 8425 /(?<=a(*:N)b)c/K 8426 xabcd 8427 0: c 8428 MK: N 8429 8430 /(?<=a(*PRUNE)b)c/ 8431 xabcd 8432 0: c 8433 8434 /(?<=a(*SKIP)b)c/ 8435 xabcd 8436 0: c 8437 8438 /(?<=a(*THEN)b)c/ 8439 xabcd 8440 0: c 8441 8442 /(a)(?2){2}(.)/ 8443 abcd 8444 0: abcd 8445 1: a 8446 2: d 8447 8448 /(*MARK:A)(*PRUNE:B)(C|X)/KS 8449 C 8450 0: C 8451 1: C 8452 MK: B 8453 D 8454 No match, mark = B 8455 8456 /(*MARK:A)(*PRUNE:B)(C|X)/KSS 8457 C 8458 0: C 8459 1: C 8460 MK: B 8461 D 8462 No match, mark = B 8463 8464 /(*MARK:A)(*THEN:B)(C|X)/KS 8465 C 8466 0: C 8467 1: C 8468 MK: B 8469 D 8470 No match, mark = B 8471 8472 /(*MARK:A)(*THEN:B)(C|X)/KSY 8473 C 8474 0: C 8475 1: C 8476 MK: B 8477 D 8478 No match, mark = B 8479 8480 /(*MARK:A)(*THEN:B)(C|X)/KSS 8481 C 8482 0: C 8483 1: C 8484 MK: B 8485 D 8486 No match, mark = B 8487 8488 /--- This should fail, as the skip causes a bump to offset 3 (the skip) ---/ 8489 8490 /A(*MARK:A)A+(*SKIP)(B|Z) | AC/xK 8491 AAAC 8492 No match, mark = A 8493 8494 /--- Same --/ 8495 8496 /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/xK 8497 AAAC 8498 No match, mark = B 8499 8500 /A(*:A)A+(*SKIP)(B|Z) | AC/xK 8501 AAAC 8502 No match, mark = A 8503 8504 /--- This should fail, as a null name is the same as no name ---/ 8505 8506 /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/xK 8507 AAAC 8508 No match, mark = A 8509 8510 /--- A check on what happens after hitting a mark and them bumping along to 8511 something that does not even start. Perl reports tags after the failures here, 8512 though it does not when the individual letters are made into something 8513 more complicated. ---/ 8514 8515 /A(*:A)B|XX(*:B)Y/K 8516 AABC 8517 0: AB 8518 MK: A 8519 XXYZ 8520 0: XXY 8521 MK: B 8522 ** Failers 8523 No match 8524 XAQQ 8525 No match, mark = A 8526 XAQQXZZ 8527 No match, mark = A 8528 AXQQQ 8529 No match, mark = A 8530 AXXQQQ 8531 No match, mark = B 8532 8533 /^(A(*THEN:A)B|C(*THEN:B)D)/K 8534 AB 8535 0: AB 8536 1: AB 8537 MK: A 8538 CD 8539 0: CD 8540 1: CD 8541 MK: B 8542 ** Failers 8543 No match 8544 AC 8545 No match, mark = A 8546 CB 8547 No match, mark = B 8548 8549 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/K 8550 AB 8551 0: AB 8552 1: AB 8553 MK: A 8554 CD 8555 0: CD 8556 1: CD 8557 MK: B 8558 ** Failers 8559 No match 8560 AC 8561 No match, mark = A 8562 CB 8563 No match, mark = B 8564 8565 /--- An empty name does not pass back an empty string. It is the same as if no 8566 name were given. ---/ 8567 8568 /^(A(*PRUNE:)B|C(*PRUNE:B)D)/K 8569 AB 8570 0: AB 8571 1: AB 8572 CD 8573 0: CD 8574 1: CD 8575 MK: B 8576 8577 /--- PRUNE goes to next bumpalong; COMMIT does not. ---/ 8578 8579 /A(*PRUNE:A)B/K 8580 ACAB 8581 0: AB 8582 MK: A 8583 8584 /--- Mark names can be duplicated ---/ 8585 8586 /A(*:A)B|X(*:A)Y/K 8587 AABC 8588 0: AB 8589 MK: A 8590 XXYZ 8591 0: XY 8592 MK: A 8593 8594 /b(*:m)f|a(*:n)w/K 8595 aw 8596 0: aw 8597 MK: n 8598 ** Failers 8599 No match, mark = n 8600 abc 8601 No match, mark = m 8602 8603 /b(*:m)f|aw/K 8604 abaw 8605 0: aw 8606 ** Failers 8607 No match 8608 abc 8609 No match, mark = m 8610 abax 8611 No match, mark = m 8612 8613 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/xK 8614 AAAC 8615 0: AAC 8616 8617 /a(*PRUNE:X)bc|qq/KY 8618 ** Failers 8619 No match, mark = X 8620 axy 8621 No match, mark = X 8622 8623 /a(*THEN:X)bc|qq/KY 8624 ** Failers 8625 No match, mark = X 8626 axy 8627 No match, mark = X 8628 8629 /(?=a(*MARK:A)b)..x/K 8630 abxy 8631 0: abx 8632 MK: A 8633 ** Failers 8634 No match 8635 abpq 8636 No match 8637 8638 /(?=a(*MARK:A)b)..(*:Y)x/K 8639 abxy 8640 0: abx 8641 MK: Y 8642 ** Failers 8643 No match 8644 abpq 8645 No match 8646 8647 /(?=a(*PRUNE:A)b)..x/K 8648 abxy 8649 0: abx 8650 MK: A 8651 ** Failers 8652 No match 8653 abpq 8654 No match 8655 8656 /(?=a(*PRUNE:A)b)..(*:Y)x/K 8657 abxy 8658 0: abx 8659 MK: Y 8660 ** Failers 8661 No match 8662 abpq 8663 No match 8664 8665 /(?=a(*THEN:A)b)..x/K 8666 abxy 8667 0: abx 8668 MK: A 8669 ** Failers 8670 No match 8671 abpq 8672 No match 8673 8674 /(?=a(*THEN:A)b)..(*:Y)x/K 8675 abxy 8676 0: abx 8677 MK: Y 8678 ** Failers 8679 No match 8680 abpq 8681 No match 8682 8683 /(another)?(\1?)test/ 8684 hello world test 8685 0: test 8686 1: <unset> 8687 2: 8688 8689 /(another)?(\1+)test/ 8690 hello world test 8691 No match 8692 8693 /(a(*COMMIT)b){0}a(?1)|aac/ 8694 aac 8695 0: aac 8696 8697 /((?:a?)*)*c/ 8698 aac 8699 0: aac 8700 1: 8701 8702 /((?>a?)*)*c/ 8703 aac 8704 0: aac 8705 1: 8706 8707 /(?>.*?a)(?<=ba)/ 8708 aba 8709 0: ba 8710 8711 /(?:.*?a)(?<=ba)/ 8712 aba 8713 0: aba 8714 8715 /.*?a(*PRUNE)b/ 8716 aab 8717 0: ab 8718 8719 /.*?a(*PRUNE)b/s 8720 aab 8721 0: ab 8722 8723 /^a(*PRUNE)b/s 8724 aab 8725 No match 8726 8727 /.*?a(*SKIP)b/ 8728 aab 8729 0: ab 8730 8731 /(?>.*?a)b/s 8732 aab 8733 0: ab 8734 8735 /(?>.*?a)b/ 8736 aab 8737 0: ab 8738 8739 /(?>^a)b/s 8740 aab 8741 No match 8742 8743 /(?>.*?)(?<=(abcd)|(wxyz))/ 8744 alphabetabcd 8745 0: 8746 1: abcd 8747 endingwxyz 8748 0: 8749 1: <unset> 8750 2: wxyz 8751 8752 /(?>.*)(?<=(abcd)|(wxyz))/ 8753 alphabetabcd 8754 0: alphabetabcd 8755 1: abcd 8756 endingwxyz 8757 0: endingwxyz 8758 1: <unset> 8759 2: wxyz 8760 8761 "(?>.*)foo" 8762 abcdfooxyz 8763 No match 8764 8765 "(?>.*?)foo" 8766 abcdfooxyz 8767 0: foo 8768 8769 /(?:(a(*PRUNE)b)){0}(?:(?1)|ac)/ 8770 ac 8771 0: ac 8772 8773 /(?:(a(*SKIP)b)){0}(?:(?1)|ac)/ 8774 ac 8775 0: ac 8776 8777 /(?<=(*SKIP)ac)a/ 8778 aa 8779 No match 8780 8781 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/xK 8782 AAAC 8783 0: AC 8784 8785 /a(*SKIP:m)x|ac(*:n)(*SKIP:n)d|ac/K 8786 acacd 8787 0: acd 8788 MK: n 8789 8790 /A(*SKIP:m)x|A(*SKIP:n)x|AB/K 8791 AB 8792 0: AB 8793 8794 /((*SKIP:r)d){0}a(*SKIP:m)x|ac(*:n)|ac/K 8795 acacd 8796 0: ac 8797 MK: n 8798 8799 /-- Tests that try to figure out how Perl works. My hypothesis is that the 8800 first verb that is backtracked onto is the one that acts. This seems to be 8801 the case almost all the time, but there is one exception that is perhaps a 8802 bug. --/ 8803 8804 /-- This matches "aaaac"; each PRUNE advances one character until the subject 8805 no longer starts with 5 'a's. --/ 8806 8807 /aaaaa(*PRUNE)b|a+c/ 8808 aaaaaac 8809 0: aaaac 8810 8811 /-- Putting SKIP in front of PRUNE makes no difference, as it is never 8812 backtracked onto, whether or not it has a label. --/ 8813 8814 /aaaaa(*SKIP)(*PRUNE)b|a+c/ 8815 aaaaaac 8816 0: aaaac 8817 8818 /aaaaa(*SKIP:N)(*PRUNE)b|a+c/ 8819 aaaaaac 8820 0: aaaac 8821 8822 /aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c/ 8823 aaaaaac 8824 0: aaaac 8825 8826 /-- Putting THEN in front makes no difference. */ 8827 8828 /aaaaa(*THEN)(*PRUNE)b|a+c/ 8829 aaaaaac 8830 0: aaaac 8831 8832 /-- However, putting COMMIT in front of the prune changes it to "no match". I 8833 think this is inconsistent and possibly a bug. For the moment, running this 8834 test is moved out of the Perl-compatible file. --/ 8835 8836 /aaaaa(*COMMIT)(*PRUNE)b|a+c/ 8837 8838 8839 /---- OK, lets play the same game again using SKIP instead of PRUNE. ----/ 8840 8841 /-- This matches "ac" because SKIP forces the next match to start on the 8842 sixth "a". --/ 8843 8844 /aaaaa(*SKIP)b|a+c/ 8845 aaaaaac 8846 0: ac 8847 8848 /-- Putting PRUNE in front makes no difference. --/ 8849 8850 /aaaaa(*PRUNE)(*SKIP)b|a+c/ 8851 aaaaaac 8852 0: ac 8853 8854 /-- Putting THEN in front makes no difference. --/ 8855 8856 /aaaaa(*THEN)(*SKIP)b|a+c/ 8857 aaaaaac 8858 0: ac 8859 8860 /-- In this case, neither does COMMIT. This still matches "ac". --/ 8861 8862 /aaaaa(*COMMIT)(*SKIP)b|a+c/ 8863 aaaaaac 8864 0: ac 8865 8866 /-- This gives "no match", as expected. --/ 8867 8868 /aaaaa(*COMMIT)b|a+c/ 8869 aaaaaac 8870 No match 8871 8872 8873 /------ Tests using THEN ------/ 8874 8875 /-- This matches "aaaaaac", as expected. --/ 8876 8877 /aaaaa(*THEN)b|a+c/ 8878 aaaaaac 8879 0: aaaaaac 8880 8881 /-- Putting SKIP in front makes no difference. --/ 8882 8883 /aaaaa(*SKIP)(*THEN)b|a+c/ 8884 aaaaaac 8885 0: aaaaaac 8886 8887 /-- Putting PRUNE in front makes no difference. --/ 8888 8889 /aaaaa(*PRUNE)(*THEN)b|a+c/ 8890 aaaaaac 8891 0: aaaaaac 8892 8893 /-- Putting COMMIT in front makes no difference. --/ 8894 8895 /aaaaa(*COMMIT)(*THEN)b|a+c/ 8896 aaaaaac 8897 0: aaaaaac 8898 8899 /-- End of "priority" tests --/ 8900 8901 /aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+/ 8902 aaaaaa 8903 0: a 8904 8905 /aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 8906 aaaaaa 8907 0: a 8908 8909 /aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+/ 8910 aaaaaa 8911 0: aaaa 8912 8913 /aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 8914 aaaaaa 8915 0: a 8916 8917 /a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c/ 8918 aaaac 8919 0: aac 8920 8921 /a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c/ 8922 aaaac 8923 0: ac 8924 8925 /aaa(*PRUNE:A)a(*SKIP:A)b|a+c/ 8926 aaaac 8927 0: aac 8928 8929 /aaa(*MARK:A)a(*SKIP:A)b|a+c/ 8930 aaaac 8931 0: ac 8932 8933 /a(*:m)a(*COMMIT)(*SKIP:m)b|a+c/K 8934 aaaaaac 8935 0: ac 8936 8937 /.?(a|b(*THEN)c)/ 8938 ba 8939 0: ba 8940 1: a 8941 8942 /(a(*COMMIT)b)c|abd/ 8943 abc 8944 0: abc 8945 1: ab 8946 abd 8947 No match 8948 8949 /(?=a(*COMMIT)b)abc|abd/ 8950 abc 8951 0: abc 8952 abd 8953 0: abd 8954 8955 /(?>a(*COMMIT)b)c|abd/ 8956 abc 8957 0: abc 8958 abd 8959 0: abd 8960 8961 /a(?=b(*COMMIT)c)[^d]|abd/ 8962 abd 8963 No match 8964 abc 8965 0: ab 8966 8967 /a(?=bc).|abd/ 8968 abd 8969 0: abd 8970 abc 8971 0: ab 8972 8973 /a(?>b(*COMMIT)c)d|abd/ 8974 abceabd 8975 No match 8976 8977 /a(?>bc)d|abd/ 8978 abceabd 8979 0: abd 8980 8981 /(?>a(*COMMIT)b)c|abd/ 8982 abd 8983 0: abd 8984 8985 /(?>a(*COMMIT)c)d|abd/ 8986 abd 8987 No match 8988 8989 /((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))/ 8990 ac 8991 0: ac 8992 1: <unset> 8993 2: c 8994 8995 /-- These tests were formerly in test 2, but changes in PCRE and Perl have 8996 made them compatible. --/ 8997 8998 /^(a)?(?(1)a|b)+$/ 8999 *** Failers 9000 No match 9001 a 9002 No match 9003 9004 /(?=a\Kb)ab/ 9005 ab 9006 0: b 9007 9008 /(?!a\Kb)ac/ 9009 ac 9010 0: ac 9011 9012 /^abc(?<=b\Kc)d/ 9013 abcd 9014 0: cd 9015 9016 /^abc(?<!b\Kq)d/ 9017 abcd 9018 0: abcd 9019 9020 9021 /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/xK 9022 AAAC 9023 No match, mark = A 9024 9025 /^((abc|abcx)(*THEN)y|abcd)/ 9026 abcd 9027 0: abcd 9028 1: abcd 9029 *** Failers 9030 No match 9031 abcxy 9032 No match 9033 9034 /^((yes|no)(*THEN)(*F))?/ 9035 yes 9036 No match 9037 9038 /(A (.*) C? (*THEN) | A D) (*FAIL)/x 9039 AbcdCBefgBhiBqz 9040 No match 9041 9042 /(A (.*) C? (*THEN) | A D) z/x 9043 AbcdCBefgBhiBqz 9044 No match 9045 9046 /(A (.*) C? (*THEN) | A D) \s* (*FAIL)/x 9047 AbcdCBefgBhiBqz 9048 No match 9049 9050 /(A (.*) C? (*THEN) | A D) \s* z/x 9051 AbcdCBefgBhiBqz 9052 No match 9053 9054 /(A (.*) (?:C|) (*THEN) | A D) (*FAIL)/x 9055 AbcdCBefgBhiBqz 9056 No match 9057 9058 /(A (.*) (?:C|) (*THEN) | A D) z/x 9059 AbcdCBefgBhiBqz 9060 No match 9061 9062 /(A (.*) C{0,6} (*THEN) | A D) (*FAIL)/x 9063 AbcdCBefgBhiBqz 9064 No match 9065 9066 /(A (.*) C{0,6} (*THEN) | A D) z/x 9067 AbcdCBefgBhiBqz 9068 No match 9069 9070 /(A (.*) (CE){0,6} (*THEN) | A D) (*FAIL)/x 9071 AbcdCEBefgBhiBqz 9072 No match 9073 9074 /(A (.*) (CE){0,6} (*THEN) | A D) z/x 9075 AbcdCEBefgBhiBqz 9076 No match 9077 9078 /(A (.*) (CE*){0,6} (*THEN) | A D) (*FAIL)/x 9079 AbcdCBefgBhiBqz 9080 No match 9081 9082 /(A (.*) (CE*){0,6} (*THEN) | A D) z/x 9083 AbcdCBefgBhiBqz 9084 No match 9085 9086 /(?=a(*COMMIT)b|ac)ac|ac/ 9087 ac 9088 No match 9089 9090 /(?=a(*COMMIT)b|(ac)) ac | (a)c/x 9091 ac 9092 No match 9093 9094 /--------/ 9095 9096 /(?(?!b(*THEN)a)bn|bnn)/ 9097 bnn 9098 0: bn 9099 9100 /(?!b(*SKIP)a)bn|bnn/ 9101 bnn 9102 0: bn 9103 9104 /(?(?!b(*SKIP)a)bn|bnn)/ 9105 bnn 9106 0: bn 9107 9108 /(?!b(*PRUNE)a)bn|bnn/ 9109 bnn 9110 0: bn 9111 9112 /(?(?!b(*PRUNE)a)bn|bnn)/ 9113 bnn 9114 0: bn 9115 9116 /(?!b(*COMMIT)a)bn|bnn/ 9117 bnn 9118 0: bn 9119 9120 /(?(?!b(*COMMIT)a)bn|bnn)/ 9121 bnn 9122 0: bn 9123 9124 /(?=b(*SKIP)a)bn|bnn/ 9125 bnn 9126 No match 9127 9128 /(?=b(*THEN)a)bn|bnn/ 9129 bnn 9130 0: bnn 9131 9132 /^(?!a(*SKIP)b)/ 9133 ac 9134 0: 9135 9136 /^(?!a(*SKIP)b)../ 9137 acd 9138 0: ac 9139 9140 /(?!a(*SKIP)b)../ 9141 acd 9142 0: ac 9143 9144 /^(?(?!a(*SKIP)b))/ 9145 ac 9146 0: 9147 9148 /^(?!a(*PRUNE)b)../ 9149 acd 9150 0: ac 9151 9152 /(?!a(*PRUNE)b)../ 9153 acd 9154 0: ac 9155 9156 /(?!a(*COMMIT)b)ac|cd/ 9157 ac 9158 0: ac 9159 9160 /\A.*?(?:a|bc)/ 9161 ba 9162 0: ba 9163 9164 /^(A(*THEN)B|C(*THEN)D)/ 9165 CD 9166 0: CD 9167 1: CD 9168 9169 /(*:m(m)(?&y)(?(DEFINE)(?<y>b))/K 9170 abc 9171 0: b 9172 MK: m(m 9173 9174 /(*PRUNE:m(m)(?&y)(?(DEFINE)(?<y>b))/K 9175 abc 9176 0: b 9177 MK: m(m 9178 9179 /(*SKIP:m(m)(?&y)(?(DEFINE)(?<y>b))/K 9180 abc 9181 0: b 9182 9183 /(*THEN:m(m)(?&y)(?(DEFINE)(?<y>b))/K 9184 abc 9185 0: b 9186 MK: m(m 9187 9188 /^\d*\w{4}/ 9189 1234 9190 0: 1234 9191 123 9192 No match 9193 9194 /^[^b]*\w{4}/ 9195 aaaa 9196 0: aaaa 9197 aaa 9198 No match 9199 9200 /^[^b]*\w{4}/i 9201 aaaa 9202 0: aaaa 9203 aaa 9204 No match 9205 9206 /^a*\w{4}/ 9207 aaaa 9208 0: aaaa 9209 aaa 9210 No match 9211 9212 /^a*\w{4}/i 9213 aaaa 9214 0: aaaa 9215 aaa 9216 No match 9217 9218 /(?(?=ab)ab)/+ 9219 ca 9220 0: 9221 0+ ca 9222 cd 9223 0: 9224 0+ cd 9225 9226 /(?:(?<n>foo)|(?<n>bar))\k<n>/J 9227 foofoo 9228 0: foofoo 9229 1: foo 9230 barbar 9231 0: barbar 9232 1: <unset> 9233 2: bar 9234 9235 /(?<n>A)(?:(?<n>foo)|(?<n>bar))\k<n>/J 9236 AfooA 9237 0: AfooA 9238 1: A 9239 2: foo 9240 AbarA 9241 0: AbarA 9242 1: A 9243 2: <unset> 9244 3: bar 9245 ** Failers 9246 No match 9247 Afoofoo 9248 No match 9249 Abarbar 9250 No match 9251 9252 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 9253 1 IN SOA non-sp1 non-sp2( 9254 0: 1 IN SOA non-sp1 non-sp2( 9255 1: 1 9256 2: non-sp1 9257 3: non-sp2 9258 9259 /^ (?:(?<A>A)|(?'B'B)(?<A>A)) (?('A')x) (?(<B>)y)$/xJ 9260 Ax 9261 0: Ax 9262 1: A 9263 BAxy 9264 0: BAxy 9265 1: <unset> 9266 2: B 9267 3: A 9268 9269 /^A\xZ/ 9270 A\0Z 9271 0: A\x00Z 9272 9273 /^A\o{123}B/ 9274 A\123B 9275 0: ASB 9276 9277 / ^ a + + b $ /x 9278 aaaab 9279 0: aaaab 9280 9281 / ^ a + #comment 9282 + b $ /x 9283 aaaab 9284 0: aaaab 9285 9286 / ^ a + #comment 9287 #comment 9288 + b $ /x 9289 aaaab 9290 0: aaaab 9291 9292 / ^ (?> a + ) b $ /x 9293 aaaab 9294 0: aaaab 9295 9296 / ^ ( a + ) + + \w $ /x 9297 aaaab 9298 0: aaaab 9299 1: aaaa 9300 9301 /(?:a\Kb)*+/+ 9302 ababc 9303 0: b 9304 0+ c 9305 9306 /(?>a\Kb)*/+ 9307 ababc 9308 0: b 9309 0+ c 9310 9311 /(?:a\Kb)*/+ 9312 ababc 9313 0: b 9314 0+ c 9315 9316 /(a\Kb)*+/+ 9317 ababc 9318 0: b 9319 0+ c 9320 1: ab 9321 9322 /(a\Kb)*/+ 9323 ababc 9324 0: b 9325 0+ c 9326 1: ab 9327 9328 /(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/ 9329 acb 9330 No match 9331 9332 '\A(?:[^\"]++|\"(?:[^\"]*+|\"\")*+\")++' 9333 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9334 0: NON QUOTED "QUOT""ED" AFTER 9335 9336 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")*+\")++' 9337 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9338 0: NON QUOTED "QUOT""ED" AFTER 9339 9340 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")++\")++' 9341 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9342 0: NON QUOTED "QUOT""ED" AFTER 9343 9344 '\A([^\"1]++|[\"2]([^\"3]*+|[\"4][\"5])*+[\"6])++' 9345 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9346 0: NON QUOTED "QUOT""ED" AFTER 9347 1: AFTER 9348 2: 9349 9350 /^\w+(?>\s*)(?<=\w)/ 9351 test test 9352 0: tes 9353 9354 /(?P<same>a)(?P<same>b)/gJ 9355 abbaba 9356 0: ab 9357 1: a 9358 2: b 9359 0: ab 9360 1: a 9361 2: b 9362 9363 /(?P<same>a)(?P<same>b)(?P=same)/gJ 9364 abbaba 9365 0: aba 9366 1: a 9367 2: b 9368 9369 /(?P=same)?(?P<same>a)(?P<same>b)/gJ 9370 abbaba 9371 0: ab 9372 1: a 9373 2: b 9374 0: ab 9375 1: a 9376 2: b 9377 9378 /(?:(?P=same)?(?:(?P<same>a)|(?P<same>b))(?P=same))+/gJ 9379 bbbaaabaabb 9380 0: bbbaaaba 9381 1: a 9382 2: b 9383 0: bb 9384 1: <unset> 9385 2: b 9386 9387 /(?:(?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)?/gJ 9388 bbbaaaccccaaabbbcc 9389 No match 9390 9391 /(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/ 9392 acl 9393 0: acl 9394 1: a 9395 bdl 9396 0: bdl 9397 1: <unset> 9398 2: b 9399 adl 9400 0: dl 9401 bcl 9402 0: l 9403 9404 /\sabc/ 9405 \x{0b}abc 9406 0: \x0babc 9407 9408 /[\Qa]\E]+/ 9409 aa]] 9410 0: aa]] 9411 9412 /[\Q]a\E]+/ 9413 aa]] 9414 0: aa]] 9415 9416 /-- End of testinput1 --/ 9417
