1 # This set of tests is for features that are compatible with all versions of 2 # Perl >= 5.10, in non-UTF mode. It should run clean for the 8-bit, 16-bit, and 3 # 32-bit PCRE libraries, and also using the perltest.pl script. 4 5 #forbid_utf 6 #newline_default lf any anycrlf 7 #perltest 8 9 /the quick brown fox/ 10 the quick brown fox 11 0: the quick brown fox 12 What do you know about the quick brown fox? 13 0: the quick brown fox 14 \= Expect no match 15 The quick brown FOX 16 No match 17 What do you know about THE QUICK BROWN FOX? 18 No match 19 20 /The quick brown fox/i 21 the quick brown fox 22 0: the quick brown fox 23 The quick brown FOX 24 0: The quick brown FOX 25 What do you know about the quick brown fox? 26 0: the quick brown fox 27 What do you know about THE QUICK BROWN FOX? 28 0: THE QUICK BROWN FOX 29 30 /abcd\t\n\r\f\a\e\071\x3b\$\\\?caxyz/ 31 abcd\t\n\r\f\a\e9;\$\\?caxyz 32 0: abcd\x09\x0a\x0d\x0c\x07\x1b9;$\?caxyz 33 34 /a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz/ 35 abxyzpqrrrabbxyyyypqAzz 36 0: abxyzpqrrrabbxyyyypqAzz 37 abxyzpqrrrabbxyyyypqAzz 38 0: abxyzpqrrrabbxyyyypqAzz 39 aabxyzpqrrrabbxyyyypqAzz 40 0: aabxyzpqrrrabbxyyyypqAzz 41 aaabxyzpqrrrabbxyyyypqAzz 42 0: aaabxyzpqrrrabbxyyyypqAzz 43 aaaabxyzpqrrrabbxyyyypqAzz 44 0: aaaabxyzpqrrrabbxyyyypqAzz 45 abcxyzpqrrrabbxyyyypqAzz 46 0: abcxyzpqrrrabbxyyyypqAzz 47 aabcxyzpqrrrabbxyyyypqAzz 48 0: aabcxyzpqrrrabbxyyyypqAzz 49 aaabcxyzpqrrrabbxyyyypAzz 50 0: aaabcxyzpqrrrabbxyyyypAzz 51 aaabcxyzpqrrrabbxyyyypqAzz 52 0: aaabcxyzpqrrrabbxyyyypqAzz 53 aaabcxyzpqrrrabbxyyyypqqAzz 54 0: aaabcxyzpqrrrabbxyyyypqqAzz 55 aaabcxyzpqrrrabbxyyyypqqqAzz 56 0: aaabcxyzpqrrrabbxyyyypqqqAzz 57 aaabcxyzpqrrrabbxyyyypqqqqAzz 58 0: aaabcxyzpqrrrabbxyyyypqqqqAzz 59 aaabcxyzpqrrrabbxyyyypqqqqqAzz 60 0: aaabcxyzpqrrrabbxyyyypqqqqqAzz 61 aaabcxyzpqrrrabbxyyyypqqqqqqAzz 62 0: aaabcxyzpqrrrabbxyyyypqqqqqqAzz 63 aaaabcxyzpqrrrabbxyyyypqAzz 64 0: aaaabcxyzpqrrrabbxyyyypqAzz 65 abxyzzpqrrrabbxyyyypqAzz 66 0: abxyzzpqrrrabbxyyyypqAzz 67 aabxyzzzpqrrrabbxyyyypqAzz 68 0: aabxyzzzpqrrrabbxyyyypqAzz 69 aaabxyzzzzpqrrrabbxyyyypqAzz 70 0: aaabxyzzzzpqrrrabbxyyyypqAzz 71 aaaabxyzzzzpqrrrabbxyyyypqAzz 72 0: aaaabxyzzzzpqrrrabbxyyyypqAzz 73 abcxyzzpqrrrabbxyyyypqAzz 74 0: abcxyzzpqrrrabbxyyyypqAzz 75 aabcxyzzzpqrrrabbxyyyypqAzz 76 0: aabcxyzzzpqrrrabbxyyyypqAzz 77 aaabcxyzzzzpqrrrabbxyyyypqAzz 78 0: aaabcxyzzzzpqrrrabbxyyyypqAzz 79 aaaabcxyzzzzpqrrrabbxyyyypqAzz 80 0: aaaabcxyzzzzpqrrrabbxyyyypqAzz 81 aaaabcxyzzzzpqrrrabbbxyyyypqAzz 82 0: aaaabcxyzzzzpqrrrabbbxyyyypqAzz 83 aaaabcxyzzzzpqrrrabbbxyyyyypqAzz 84 0: aaaabcxyzzzzpqrrrabbbxyyyyypqAzz 85 aaabcxyzpqrrrabbxyyyypABzz 86 0: aaabcxyzpqrrrabbxyyyypABzz 87 aaabcxyzpqrrrabbxyyyypABBzz 88 0: aaabcxyzpqrrrabbxyyyypABBzz 89 >>>aaabxyzpqrrrabbxyyyypqAzz 90 0: aaabxyzpqrrrabbxyyyypqAzz 91 >aaaabxyzpqrrrabbxyyyypqAzz 92 0: aaaabxyzpqrrrabbxyyyypqAzz 93 >>>>abcxyzpqrrrabbxyyyypqAzz 94 0: abcxyzpqrrrabbxyyyypqAzz 95 \= Expect no match 96 abxyzpqrrabbxyyyypqAzz 97 No match 98 abxyzpqrrrrabbxyyyypqAzz 99 No match 100 abxyzpqrrrabxyyyypqAzz 101 No match 102 aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz 103 No match 104 aaaabcxyzzzzpqrrrabbbxyyypqAzz 105 No match 106 aaabcxyzpqrrrabbxyyyypqqqqqqqAzz 107 No match 108 109 /^(abc){1,2}zz/ 110 abczz 111 0: abczz 112 1: abc 113 abcabczz 114 0: abcabczz 115 1: abc 116 \= Expect no match 117 zz 118 No match 119 abcabcabczz 120 No match 121 >>abczz 122 No match 123 124 /^(b+?|a){1,2}?c/ 125 bc 126 0: bc 127 1: b 128 bbc 129 0: bbc 130 1: b 131 bbbc 132 0: bbbc 133 1: bb 134 bac 135 0: bac 136 1: a 137 bbac 138 0: bbac 139 1: a 140 aac 141 0: aac 142 1: a 143 abbbbbbbbbbbc 144 0: abbbbbbbbbbbc 145 1: bbbbbbbbbbb 146 bbbbbbbbbbbac 147 0: bbbbbbbbbbbac 148 1: a 149 \= Expect no match 150 aaac 151 No match 152 abbbbbbbbbbbac 153 No match 154 155 /^(b+|a){1,2}c/ 156 bc 157 0: bc 158 1: b 159 bbc 160 0: bbc 161 1: bb 162 bbbc 163 0: bbbc 164 1: bbb 165 bac 166 0: bac 167 1: a 168 bbac 169 0: bbac 170 1: a 171 aac 172 0: aac 173 1: a 174 abbbbbbbbbbbc 175 0: abbbbbbbbbbbc 176 1: bbbbbbbbbbb 177 bbbbbbbbbbbac 178 0: bbbbbbbbbbbac 179 1: a 180 \= Expect no match 181 aaac 182 No match 183 abbbbbbbbbbbac 184 No match 185 186 /^(ba|b*){1,2}?bc/ 187 babc 188 0: babc 189 1: ba 190 bbabc 191 0: bbabc 192 1: ba 193 bababc 194 0: bababc 195 1: ba 196 \= Expect no match 197 bababbc 198 No match 199 babababc 200 No match 201 202 /^\ca\cA\c[;\c:/ 203 \x01\x01\e;z 204 0: \x01\x01\x1b;z 205 206 /^[ab\]cde]/ 207 athing 208 0: a 209 bthing 210 0: b 211 ]thing 212 0: ] 213 cthing 214 0: c 215 dthing 216 0: d 217 ething 218 0: e 219 \= Expect no match 220 fthing 221 No match 222 [thing 223 No match 224 \\thing 225 No match 226 227 /^[]cde]/ 228 ]thing 229 0: ] 230 cthing 231 0: c 232 dthing 233 0: d 234 ething 235 0: e 236 \= Expect no match 237 athing 238 No match 239 fthing 240 No match 241 242 /^[^ab\]cde]/ 243 fthing 244 0: f 245 [thing 246 0: [ 247 \\thing 248 0: \ 249 \= Expect no match 250 athing 251 No match 252 bthing 253 No match 254 ]thing 255 No match 256 cthing 257 No match 258 dthing 259 No match 260 ething 261 No match 262 263 /^[^]cde]/ 264 athing 265 0: a 266 fthing 267 0: f 268 \= Expect no match 269 ]thing 270 No match 271 cthing 272 No match 273 dthing 274 No match 275 ething 276 No match 277 278 /^\/ 279 280 0: \x81 281 282 /^/ 283 284 0: \xff 285 286 /^[0-9]+$/ 287 0 288 0: 0 289 1 290 0: 1 291 2 292 0: 2 293 3 294 0: 3 295 4 296 0: 4 297 5 298 0: 5 299 6 300 0: 6 301 7 302 0: 7 303 8 304 0: 8 305 9 306 0: 9 307 10 308 0: 10 309 100 310 0: 100 311 \= Expect no match 312 abc 313 No match 314 315 /^.*nter/ 316 enter 317 0: enter 318 inter 319 0: inter 320 uponter 321 0: uponter 322 323 /^xxx[0-9]+$/ 324 xxx0 325 0: xxx0 326 xxx1234 327 0: xxx1234 328 \= Expect no match 329 xxx 330 No match 331 332 /^.+[0-9][0-9][0-9]$/ 333 x123 334 0: x123 335 x1234 336 0: x1234 337 xx123 338 0: xx123 339 123456 340 0: 123456 341 \= Expect no match 342 123 343 No match 344 345 /^.+?[0-9][0-9][0-9]$/ 346 x123 347 0: x123 348 x1234 349 0: x1234 350 xx123 351 0: xx123 352 123456 353 0: 123456 354 \= Expect no match 355 123 356 No match 357 358 /^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/ 359 abc!pqr=apquxz.ixr.zzz.ac.uk 360 0: abc!pqr=apquxz.ixr.zzz.ac.uk 361 1: abc 362 2: pqr 363 \= Expect no match 364 !pqr=apquxz.ixr.zzz.ac.uk 365 No match 366 abc!=apquxz.ixr.zzz.ac.uk 367 No match 368 abc!pqr=apquxz:ixr.zzz.ac.uk 369 No match 370 abc!pqr=apquxz.ixr.zzz.ac.ukk 371 No match 372 373 /:/ 374 Well, we need a colon: somewhere 375 0: : 376 \= Expect no match 377 Fail without a colon 378 No match 379 380 /([\da-f:]+)$/i 381 0abc 382 0: 0abc 383 1: 0abc 384 abc 385 0: abc 386 1: abc 387 fed 388 0: fed 389 1: fed 390 E 391 0: E 392 1: E 393 :: 394 0: :: 395 1: :: 396 5f03:12C0::932e 397 0: 5f03:12C0::932e 398 1: 5f03:12C0::932e 399 fed def 400 0: def 401 1: def 402 Any old stuff 403 0: ff 404 1: ff 405 \= Expect no match 406 0zzz 407 No match 408 gzzz 409 No match 410 fed\x20 411 No match 412 Any old rubbish 413 No match 414 415 /^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ 416 .1.2.3 417 0: .1.2.3 418 1: 1 419 2: 2 420 3: 3 421 A.12.123.0 422 0: A.12.123.0 423 1: 12 424 2: 123 425 3: 0 426 \= Expect no match 427 .1.2.3333 428 No match 429 1.2.3 430 No match 431 1234.2.3 432 No match 433 434 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 435 1 IN SOA non-sp1 non-sp2( 436 0: 1 IN SOA non-sp1 non-sp2( 437 1: 1 438 2: non-sp1 439 3: non-sp2 440 1 IN SOA non-sp1 non-sp2 ( 441 0: 1 IN SOA non-sp1 non-sp2 ( 442 1: 1 443 2: non-sp1 444 3: non-sp2 445 \= Expect no match 446 1IN SOA non-sp1 non-sp2( 447 No match 448 449 /^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/ 450 a. 451 0: a. 452 Z. 453 0: Z. 454 2. 455 0: 2. 456 ab-c.pq-r. 457 0: ab-c.pq-r. 458 1: .pq-r 459 sxk.zzz.ac.uk. 460 0: sxk.zzz.ac.uk. 461 1: .uk 462 x-.y-. 463 0: x-.y-. 464 1: .y- 465 \= Expect no match 466 -abc.peq. 467 No match 468 469 /^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/ 470 *.a 471 0: *.a 472 *.b0-a 473 0: *.b0-a 474 1: 0-a 475 *.c3-b.c 476 0: *.c3-b.c 477 1: 3-b 478 2: .c 479 *.c-a.b-c 480 0: *.c-a.b-c 481 1: -a 482 2: .b-c 483 3: -c 484 \= Expect no match 485 *.0 486 No match 487 *.a- 488 No match 489 *.a-b.c- 490 No match 491 *.c-a.0-c 492 No match 493 494 /^(?=ab(de))(abd)(e)/ 495 abde 496 0: abde 497 1: de 498 2: abd 499 3: e 500 501 /^(?!(ab)de|x)(abd)(f)/ 502 abdf 503 0: abdf 504 1: <unset> 505 2: abd 506 3: f 507 508 /^(?=(ab(cd)))(ab)/ 509 abcd 510 0: ab 511 1: abcd 512 2: cd 513 3: ab 514 515 /^[\da-f](\.[\da-f])*$/i 516 a.b.c.d 517 0: a.b.c.d 518 1: .d 519 A.B.C.D 520 0: A.B.C.D 521 1: .D 522 a.b.c.1.2.3.C 523 0: a.b.c.1.2.3.C 524 1: .C 525 526 /^\".*\"\s*(;.*)?$/ 527 \"1234\" 528 0: "1234" 529 \"abcd\" ; 530 0: "abcd" ; 531 1: ; 532 \"\" ; rhubarb 533 0: "" ; rhubarb 534 1: ; rhubarb 535 \= Expect no match 536 \"1234\" : things 537 No match 538 539 /^$/ 540 \ 541 0: 542 \= Expect no match 543 A non-empty line 544 No match 545 546 / ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/x 547 ab c 548 0: ab c 549 \= Expect no match 550 abc 551 No match 552 ab cde 553 No match 554 555 /(?x) ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/ 556 ab c 557 0: ab c 558 \= Expect no match 559 abc 560 No match 561 ab cde 562 No match 563 564 /^ a\ b[c ]d $/x 565 a bcd 566 0: a bcd 567 a b d 568 0: a b d 569 \= Expect no match 570 abcd 571 No match 572 ab d 573 No match 574 575 /^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$/ 576 abcdefhijklm 577 0: abcdefhijklm 578 1: abc 579 2: bc 580 3: c 581 4: def 582 5: ef 583 6: f 584 7: hij 585 8: ij 586 9: j 587 10: klm 588 11: lm 589 12: m 590 591 /^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$/ 592 abcdefhijklm 593 0: abcdefhijklm 594 1: bc 595 2: c 596 3: ef 597 4: f 598 5: ij 599 6: j 600 7: lm 601 8: m 602 603 /^[\w][\W][\s][\S][\d][\D][\b][\n][\c]][\022]/ 604 a+ Z0+\x08\n\x1d\x12 605 0: a+ Z0+\x08\x0a\x1d\x12 606 607 /^[.^$|()*+?{,}]+/ 608 .^\$(*+)|{?,?} 609 0: .^$(*+)|{?,?} 610 611 /^a*\w/ 612 z 613 0: z 614 az 615 0: az 616 aaaz 617 0: aaaz 618 a 619 0: a 620 aa 621 0: aa 622 aaaa 623 0: aaaa 624 a+ 625 0: a 626 aa+ 627 0: aa 628 629 /^a*?\w/ 630 z 631 0: z 632 az 633 0: a 634 aaaz 635 0: a 636 a 637 0: a 638 aa 639 0: a 640 aaaa 641 0: a 642 a+ 643 0: a 644 aa+ 645 0: a 646 647 /^a+\w/ 648 az 649 0: az 650 aaaz 651 0: aaaz 652 aa 653 0: aa 654 aaaa 655 0: aaaa 656 aa+ 657 0: aa 658 659 /^a+?\w/ 660 az 661 0: az 662 aaaz 663 0: aa 664 aa 665 0: aa 666 aaaa 667 0: aa 668 aa+ 669 0: aa 670 671 /^\d{8}\w{2,}/ 672 1234567890 673 0: 1234567890 674 12345678ab 675 0: 12345678ab 676 12345678__ 677 0: 12345678__ 678 \= Expect no match 679 1234567 680 No match 681 682 /^[aeiou\d]{4,5}$/ 683 uoie 684 0: uoie 685 1234 686 0: 1234 687 12345 688 0: 12345 689 aaaaa 690 0: aaaaa 691 \= Expect no match 692 123456 693 No match 694 695 /^[aeiou\d]{4,5}?/ 696 uoie 697 0: uoie 698 1234 699 0: 1234 700 12345 701 0: 1234 702 aaaaa 703 0: aaaa 704 123456 705 0: 1234 706 707 /\A(abc|def)=(\1){2,3}\Z/ 708 abc=abcabc 709 0: abc=abcabc 710 1: abc 711 2: abc 712 def=defdefdef 713 0: def=defdefdef 714 1: def 715 2: def 716 \= Expect no match 717 abc=defdef 718 No match 719 720 /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/ 721 abcdefghijkcda2 722 0: abcdefghijkcda2 723 1: a 724 2: b 725 3: c 726 4: d 727 5: e 728 6: f 729 7: g 730 8: h 731 9: i 732 10: j 733 11: k 734 12: cd 735 abcdefghijkkkkcda2 736 0: abcdefghijkkkkcda2 737 1: a 738 2: b 739 3: c 740 4: d 741 5: e 742 6: f 743 7: g 744 8: h 745 9: i 746 10: j 747 11: k 748 12: cd 749 750 /(cat(a(ract|tonic)|erpillar)) \1()2(3)/ 751 cataract cataract23 752 0: cataract cataract23 753 1: cataract 754 2: aract 755 3: ract 756 4: 757 5: 3 758 catatonic catatonic23 759 0: catatonic catatonic23 760 1: catatonic 761 2: atonic 762 3: tonic 763 4: 764 5: 3 765 caterpillar caterpillar23 766 0: caterpillar caterpillar23 767 1: caterpillar 768 2: erpillar 769 3: <unset> 770 4: 771 5: 3 772 773 774 /^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]/ 775 From abcd Mon Sep 01 12:33:02 1997 776 0: From abcd Mon Sep 01 12:33 777 1: abcd 778 779 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/ 780 From abcd Mon Sep 01 12:33:02 1997 781 0: From abcd Mon Sep 01 12:33 782 1: Sep 783 From abcd Mon Sep 1 12:33:02 1997 784 0: From abcd Mon Sep 1 12:33 785 1: Sep 786 \= Expect no match 787 From abcd Sep 01 12:33:02 1997 788 No match 789 790 /^12.34/s 791 12\n34 792 0: 12\x0a34 793 12\r34 794 0: 12\x0d34 795 796 /\w+(?=\t)/ 797 the quick brown\t fox 798 0: brown 799 800 /foo(?!bar)(.*)/ 801 foobar is foolish see? 802 0: foolish see? 803 1: lish see? 804 805 /(?:(?!foo)...|^.{0,2})bar(.*)/ 806 foobar crowbar etc 807 0: rowbar etc 808 1: etc 809 barrel 810 0: barrel 811 1: rel 812 2barrel 813 0: 2barrel 814 1: rel 815 A barrel 816 0: A barrel 817 1: rel 818 819 /^(\D*)(?=\d)(?!123)/ 820 abc456 821 0: abc 822 1: abc 823 \= Expect no match 824 abc123 825 No match 826 827 /^1234(?# test newlines 828 inside)/ 829 1234 830 0: 1234 831 832 /^1234 #comment in extended re 833 /x 834 1234 835 0: 1234 836 837 /#rhubarb 838 abcd/x 839 abcd 840 0: abcd 841 842 /^abcd#rhubarb/x 843 abcd 844 0: abcd 845 846 /^(a)\1{2,3}(.)/ 847 aaab 848 0: aaab 849 1: a 850 2: b 851 aaaab 852 0: aaaab 853 1: a 854 2: b 855 aaaaab 856 0: aaaaa 857 1: a 858 2: a 859 aaaaaab 860 0: aaaaa 861 1: a 862 2: a 863 864 /(?!^)abc/ 865 the abc 866 0: abc 867 \= Expect no match 868 abc 869 No match 870 871 /(?=^)abc/ 872 abc 873 0: abc 874 \= Expect no match 875 the abc 876 No match 877 878 /^[ab]{1,3}(ab*|b)/ 879 aabbbbb 880 0: aabb 881 1: b 882 883 /^[ab]{1,3}?(ab*|b)/ 884 aabbbbb 885 0: aabbbbb 886 1: abbbbb 887 888 /^[ab]{1,3}?(ab*?|b)/ 889 aabbbbb 890 0: aa 891 1: a 892 893 /^[ab]{1,3}(ab*?|b)/ 894 aabbbbb 895 0: aabb 896 1: b 897 898 / (?: [\040\t] | \( 899 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 900 \) )* # optional leading comment 901 (?: (?: 902 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 903 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 904 | 905 " (?: # opening quote... 906 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 907 | # or 908 \\ [^\x80-\xff] # Escaped something (something != CR) 909 )* " # closing quote 910 ) # initial word 911 (?: (?: [\040\t] | \( 912 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 913 \) )* \. (?: [\040\t] | \( 914 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 915 \) )* (?: 916 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 917 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 918 | 919 " (?: # opening quote... 920 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 921 | # or 922 \\ [^\x80-\xff] # Escaped something (something != CR) 923 )* " # closing quote 924 ) )* # further okay, if led by a period 925 (?: [\040\t] | \( 926 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 927 \) )* @ (?: [\040\t] | \( 928 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 929 \) )* (?: 930 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 931 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 932 | \[ # [ 933 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 934 \] # ] 935 ) # initial subdomain 936 (?: # 937 (?: [\040\t] | \( 938 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 939 \) )* \. # if led by a period... 940 (?: [\040\t] | \( 941 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 942 \) )* (?: 943 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 944 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 945 | \[ # [ 946 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 947 \] # ] 948 ) # ...further okay 949 )* 950 # address 951 | # or 952 (?: 953 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 954 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 955 | 956 " (?: # opening quote... 957 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 958 | # or 959 \\ [^\x80-\xff] # Escaped something (something != CR) 960 )* " # closing quote 961 ) # one word, optionally followed by.... 962 (?: 963 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] | # atom and space parts, or... 964 \( 965 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 966 \) | # comments, or... 967 968 " (?: # opening quote... 969 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 970 | # or 971 \\ [^\x80-\xff] # Escaped something (something != CR) 972 )* " # closing quote 973 # quoted strings 974 )* 975 < (?: [\040\t] | \( 976 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 977 \) )* # leading < 978 (?: @ (?: [\040\t] | \( 979 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 980 \) )* (?: 981 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 982 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 983 | \[ # [ 984 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 985 \] # ] 986 ) # initial subdomain 987 (?: # 988 (?: [\040\t] | \( 989 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 990 \) )* \. # if led by a period... 991 (?: [\040\t] | \( 992 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 993 \) )* (?: 994 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 995 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 996 | \[ # [ 997 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 998 \] # ] 999 ) # ...further okay 1000 )* 1001 1002 (?: (?: [\040\t] | \( 1003 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1004 \) )* , (?: [\040\t] | \( 1005 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1006 \) )* @ (?: [\040\t] | \( 1007 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1008 \) )* (?: 1009 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1010 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1011 | \[ # [ 1012 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1013 \] # ] 1014 ) # initial subdomain 1015 (?: # 1016 (?: [\040\t] | \( 1017 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1018 \) )* \. # if led by a period... 1019 (?: [\040\t] | \( 1020 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1021 \) )* (?: 1022 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1023 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1024 | \[ # [ 1025 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1026 \] # ] 1027 ) # ...further okay 1028 )* 1029 )* # further okay, if led by comma 1030 : # closing colon 1031 (?: [\040\t] | \( 1032 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1033 \) )* )? # optional route 1034 (?: 1035 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1036 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1037 | 1038 " (?: # opening quote... 1039 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1040 | # or 1041 \\ [^\x80-\xff] # Escaped something (something != CR) 1042 )* " # closing quote 1043 ) # initial word 1044 (?: (?: [\040\t] | \( 1045 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1046 \) )* \. (?: [\040\t] | \( 1047 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1048 \) )* (?: 1049 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1050 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1051 | 1052 " (?: # opening quote... 1053 [^\\\x80-\xff\n\015"] # Anything except backslash and quote 1054 | # or 1055 \\ [^\x80-\xff] # Escaped something (something != CR) 1056 )* " # closing quote 1057 ) )* # further okay, if led by a period 1058 (?: [\040\t] | \( 1059 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1060 \) )* @ (?: [\040\t] | \( 1061 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1062 \) )* (?: 1063 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1064 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1065 | \[ # [ 1066 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1067 \] # ] 1068 ) # initial subdomain 1069 (?: # 1070 (?: [\040\t] | \( 1071 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1072 \) )* \. # if led by a period... 1073 (?: [\040\t] | \( 1074 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1075 \) )* (?: 1076 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1077 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1078 | \[ # [ 1079 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1080 \] # ] 1081 ) # ...further okay 1082 )* 1083 # address spec 1084 (?: [\040\t] | \( 1085 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1086 \) )* > # trailing > 1087 # name and address 1088 ) (?: [\040\t] | \( 1089 (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] | \( (?: [^\\\x80-\xff\n\015()] | \\ [^\x80-\xff] )* \) )* 1090 \) )* # optional trailing comment 1091 /x 1092 Alan Other <user\@dom.ain> 1093 0: Alan Other <user (a] dom.ain> 1094 <user\@dom.ain> 1095 0: user (a] dom.ain 1096 user\@dom.ain 1097 0: user (a] dom.ain 1098 \"A. Other\" <user.1234\@dom.ain> (a comment) 1099 0: "A. Other" <user.1234 (a] dom.ain> (a comment) 1100 A. Other <user.1234\@dom.ain> (a comment) 1101 0: Other <user.1234 (a] dom.ain> (a comment) 1102 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 1103 0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay 1104 A missing angle <user\@some.where 1105 0: user (a] some.where 1106 \= Expect no match 1107 The quick brown fox 1108 No match 1109 1110 /[\040\t]* # Nab whitespace. 1111 (?: 1112 \( # ( 1113 [^\\\x80-\xff\n\015()] * # normal* 1114 (?: # ( 1115 (?: \\ [^\x80-\xff] | 1116 \( # ( 1117 [^\\\x80-\xff\n\015()] * # normal* 1118 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1119 \) # ) 1120 ) # special 1121 [^\\\x80-\xff\n\015()] * # normal* 1122 )* # )* 1123 \) # ) 1124 [\040\t]* )* # If comment found, allow more spaces. 1125 # optional leading comment 1126 (?: 1127 (?: 1128 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1129 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1130 # Atom 1131 | # or 1132 " # " 1133 [^\\\x80-\xff\n\015"] * # normal 1134 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1135 " # " 1136 # Quoted string 1137 ) 1138 [\040\t]* # Nab whitespace. 1139 (?: 1140 \( # ( 1141 [^\\\x80-\xff\n\015()] * # normal* 1142 (?: # ( 1143 (?: \\ [^\x80-\xff] | 1144 \( # ( 1145 [^\\\x80-\xff\n\015()] * # normal* 1146 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1147 \) # ) 1148 ) # special 1149 [^\\\x80-\xff\n\015()] * # normal* 1150 )* # )* 1151 \) # ) 1152 [\040\t]* )* # If comment found, allow more spaces. 1153 (?: 1154 \. 1155 [\040\t]* # Nab whitespace. 1156 (?: 1157 \( # ( 1158 [^\\\x80-\xff\n\015()] * # normal* 1159 (?: # ( 1160 (?: \\ [^\x80-\xff] | 1161 \( # ( 1162 [^\\\x80-\xff\n\015()] * # normal* 1163 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1164 \) # ) 1165 ) # special 1166 [^\\\x80-\xff\n\015()] * # normal* 1167 )* # )* 1168 \) # ) 1169 [\040\t]* )* # If comment found, allow more spaces. 1170 (?: 1171 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1172 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1173 # Atom 1174 | # or 1175 " # " 1176 [^\\\x80-\xff\n\015"] * # normal 1177 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1178 " # " 1179 # Quoted string 1180 ) 1181 [\040\t]* # Nab whitespace. 1182 (?: 1183 \( # ( 1184 [^\\\x80-\xff\n\015()] * # normal* 1185 (?: # ( 1186 (?: \\ [^\x80-\xff] | 1187 \( # ( 1188 [^\\\x80-\xff\n\015()] * # normal* 1189 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1190 \) # ) 1191 ) # special 1192 [^\\\x80-\xff\n\015()] * # normal* 1193 )* # )* 1194 \) # ) 1195 [\040\t]* )* # If comment found, allow more spaces. 1196 # additional words 1197 )* 1198 @ 1199 [\040\t]* # Nab whitespace. 1200 (?: 1201 \( # ( 1202 [^\\\x80-\xff\n\015()] * # normal* 1203 (?: # ( 1204 (?: \\ [^\x80-\xff] | 1205 \( # ( 1206 [^\\\x80-\xff\n\015()] * # normal* 1207 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1208 \) # ) 1209 ) # special 1210 [^\\\x80-\xff\n\015()] * # normal* 1211 )* # )* 1212 \) # ) 1213 [\040\t]* )* # If comment found, allow more spaces. 1214 (?: 1215 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1216 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1217 | 1218 \[ # [ 1219 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1220 \] # ] 1221 ) 1222 [\040\t]* # Nab whitespace. 1223 (?: 1224 \( # ( 1225 [^\\\x80-\xff\n\015()] * # normal* 1226 (?: # ( 1227 (?: \\ [^\x80-\xff] | 1228 \( # ( 1229 [^\\\x80-\xff\n\015()] * # normal* 1230 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1231 \) # ) 1232 ) # special 1233 [^\\\x80-\xff\n\015()] * # normal* 1234 )* # )* 1235 \) # ) 1236 [\040\t]* )* # If comment found, allow more spaces. 1237 # optional trailing comments 1238 (?: 1239 \. 1240 [\040\t]* # Nab whitespace. 1241 (?: 1242 \( # ( 1243 [^\\\x80-\xff\n\015()] * # normal* 1244 (?: # ( 1245 (?: \\ [^\x80-\xff] | 1246 \( # ( 1247 [^\\\x80-\xff\n\015()] * # normal* 1248 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1249 \) # ) 1250 ) # special 1251 [^\\\x80-\xff\n\015()] * # normal* 1252 )* # )* 1253 \) # ) 1254 [\040\t]* )* # If comment found, allow more spaces. 1255 (?: 1256 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1257 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1258 | 1259 \[ # [ 1260 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1261 \] # ] 1262 ) 1263 [\040\t]* # Nab whitespace. 1264 (?: 1265 \( # ( 1266 [^\\\x80-\xff\n\015()] * # normal* 1267 (?: # ( 1268 (?: \\ [^\x80-\xff] | 1269 \( # ( 1270 [^\\\x80-\xff\n\015()] * # normal* 1271 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1272 \) # ) 1273 ) # special 1274 [^\\\x80-\xff\n\015()] * # normal* 1275 )* # )* 1276 \) # ) 1277 [\040\t]* )* # If comment found, allow more spaces. 1278 # optional trailing comments 1279 )* 1280 # address 1281 | # or 1282 (?: 1283 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1284 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1285 # Atom 1286 | # or 1287 " # " 1288 [^\\\x80-\xff\n\015"] * # normal 1289 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1290 " # " 1291 # Quoted string 1292 ) 1293 # leading word 1294 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # "normal" atoms and or spaces 1295 (?: 1296 (?: 1297 \( # ( 1298 [^\\\x80-\xff\n\015()] * # normal* 1299 (?: # ( 1300 (?: \\ [^\x80-\xff] | 1301 \( # ( 1302 [^\\\x80-\xff\n\015()] * # normal* 1303 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1304 \) # ) 1305 ) # special 1306 [^\\\x80-\xff\n\015()] * # normal* 1307 )* # )* 1308 \) # ) 1309 | 1310 " # " 1311 [^\\\x80-\xff\n\015"] * # normal 1312 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1313 " # " 1314 ) # "special" comment or quoted string 1315 [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # more "normal" 1316 )* 1317 < 1318 [\040\t]* # Nab whitespace. 1319 (?: 1320 \( # ( 1321 [^\\\x80-\xff\n\015()] * # normal* 1322 (?: # ( 1323 (?: \\ [^\x80-\xff] | 1324 \( # ( 1325 [^\\\x80-\xff\n\015()] * # normal* 1326 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1327 \) # ) 1328 ) # special 1329 [^\\\x80-\xff\n\015()] * # normal* 1330 )* # )* 1331 \) # ) 1332 [\040\t]* )* # If comment found, allow more spaces. 1333 # < 1334 (?: 1335 @ 1336 [\040\t]* # Nab whitespace. 1337 (?: 1338 \( # ( 1339 [^\\\x80-\xff\n\015()] * # normal* 1340 (?: # ( 1341 (?: \\ [^\x80-\xff] | 1342 \( # ( 1343 [^\\\x80-\xff\n\015()] * # normal* 1344 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1345 \) # ) 1346 ) # special 1347 [^\\\x80-\xff\n\015()] * # normal* 1348 )* # )* 1349 \) # ) 1350 [\040\t]* )* # If comment found, allow more spaces. 1351 (?: 1352 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1353 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1354 | 1355 \[ # [ 1356 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1357 \] # ] 1358 ) 1359 [\040\t]* # Nab whitespace. 1360 (?: 1361 \( # ( 1362 [^\\\x80-\xff\n\015()] * # normal* 1363 (?: # ( 1364 (?: \\ [^\x80-\xff] | 1365 \( # ( 1366 [^\\\x80-\xff\n\015()] * # normal* 1367 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1368 \) # ) 1369 ) # special 1370 [^\\\x80-\xff\n\015()] * # normal* 1371 )* # )* 1372 \) # ) 1373 [\040\t]* )* # If comment found, allow more spaces. 1374 # optional trailing comments 1375 (?: 1376 \. 1377 [\040\t]* # Nab whitespace. 1378 (?: 1379 \( # ( 1380 [^\\\x80-\xff\n\015()] * # normal* 1381 (?: # ( 1382 (?: \\ [^\x80-\xff] | 1383 \( # ( 1384 [^\\\x80-\xff\n\015()] * # normal* 1385 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1386 \) # ) 1387 ) # special 1388 [^\\\x80-\xff\n\015()] * # normal* 1389 )* # )* 1390 \) # ) 1391 [\040\t]* )* # If comment found, allow more spaces. 1392 (?: 1393 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1394 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1395 | 1396 \[ # [ 1397 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1398 \] # ] 1399 ) 1400 [\040\t]* # Nab whitespace. 1401 (?: 1402 \( # ( 1403 [^\\\x80-\xff\n\015()] * # normal* 1404 (?: # ( 1405 (?: \\ [^\x80-\xff] | 1406 \( # ( 1407 [^\\\x80-\xff\n\015()] * # normal* 1408 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1409 \) # ) 1410 ) # special 1411 [^\\\x80-\xff\n\015()] * # normal* 1412 )* # )* 1413 \) # ) 1414 [\040\t]* )* # If comment found, allow more spaces. 1415 # optional trailing comments 1416 )* 1417 (?: , 1418 [\040\t]* # Nab whitespace. 1419 (?: 1420 \( # ( 1421 [^\\\x80-\xff\n\015()] * # normal* 1422 (?: # ( 1423 (?: \\ [^\x80-\xff] | 1424 \( # ( 1425 [^\\\x80-\xff\n\015()] * # normal* 1426 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1427 \) # ) 1428 ) # special 1429 [^\\\x80-\xff\n\015()] * # normal* 1430 )* # )* 1431 \) # ) 1432 [\040\t]* )* # If comment found, allow more spaces. 1433 @ 1434 [\040\t]* # Nab whitespace. 1435 (?: 1436 \( # ( 1437 [^\\\x80-\xff\n\015()] * # normal* 1438 (?: # ( 1439 (?: \\ [^\x80-\xff] | 1440 \( # ( 1441 [^\\\x80-\xff\n\015()] * # normal* 1442 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1443 \) # ) 1444 ) # special 1445 [^\\\x80-\xff\n\015()] * # normal* 1446 )* # )* 1447 \) # ) 1448 [\040\t]* )* # If comment found, allow more spaces. 1449 (?: 1450 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1451 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1452 | 1453 \[ # [ 1454 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1455 \] # ] 1456 ) 1457 [\040\t]* # Nab whitespace. 1458 (?: 1459 \( # ( 1460 [^\\\x80-\xff\n\015()] * # normal* 1461 (?: # ( 1462 (?: \\ [^\x80-\xff] | 1463 \( # ( 1464 [^\\\x80-\xff\n\015()] * # normal* 1465 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1466 \) # ) 1467 ) # special 1468 [^\\\x80-\xff\n\015()] * # normal* 1469 )* # )* 1470 \) # ) 1471 [\040\t]* )* # If comment found, allow more spaces. 1472 # optional trailing comments 1473 (?: 1474 \. 1475 [\040\t]* # Nab whitespace. 1476 (?: 1477 \( # ( 1478 [^\\\x80-\xff\n\015()] * # normal* 1479 (?: # ( 1480 (?: \\ [^\x80-\xff] | 1481 \( # ( 1482 [^\\\x80-\xff\n\015()] * # normal* 1483 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1484 \) # ) 1485 ) # special 1486 [^\\\x80-\xff\n\015()] * # normal* 1487 )* # )* 1488 \) # ) 1489 [\040\t]* )* # If comment found, allow more spaces. 1490 (?: 1491 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1492 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1493 | 1494 \[ # [ 1495 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1496 \] # ] 1497 ) 1498 [\040\t]* # Nab whitespace. 1499 (?: 1500 \( # ( 1501 [^\\\x80-\xff\n\015()] * # normal* 1502 (?: # ( 1503 (?: \\ [^\x80-\xff] | 1504 \( # ( 1505 [^\\\x80-\xff\n\015()] * # normal* 1506 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1507 \) # ) 1508 ) # special 1509 [^\\\x80-\xff\n\015()] * # normal* 1510 )* # )* 1511 \) # ) 1512 [\040\t]* )* # If comment found, allow more spaces. 1513 # optional trailing comments 1514 )* 1515 )* # additional domains 1516 : 1517 [\040\t]* # Nab whitespace. 1518 (?: 1519 \( # ( 1520 [^\\\x80-\xff\n\015()] * # normal* 1521 (?: # ( 1522 (?: \\ [^\x80-\xff] | 1523 \( # ( 1524 [^\\\x80-\xff\n\015()] * # normal* 1525 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1526 \) # ) 1527 ) # special 1528 [^\\\x80-\xff\n\015()] * # normal* 1529 )* # )* 1530 \) # ) 1531 [\040\t]* )* # If comment found, allow more spaces. 1532 # optional trailing comments 1533 )? # optional route 1534 (?: 1535 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1536 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1537 # Atom 1538 | # or 1539 " # " 1540 [^\\\x80-\xff\n\015"] * # normal 1541 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1542 " # " 1543 # Quoted string 1544 ) 1545 [\040\t]* # Nab whitespace. 1546 (?: 1547 \( # ( 1548 [^\\\x80-\xff\n\015()] * # normal* 1549 (?: # ( 1550 (?: \\ [^\x80-\xff] | 1551 \( # ( 1552 [^\\\x80-\xff\n\015()] * # normal* 1553 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1554 \) # ) 1555 ) # special 1556 [^\\\x80-\xff\n\015()] * # normal* 1557 )* # )* 1558 \) # ) 1559 [\040\t]* )* # If comment found, allow more spaces. 1560 (?: 1561 \. 1562 [\040\t]* # Nab whitespace. 1563 (?: 1564 \( # ( 1565 [^\\\x80-\xff\n\015()] * # normal* 1566 (?: # ( 1567 (?: \\ [^\x80-\xff] | 1568 \( # ( 1569 [^\\\x80-\xff\n\015()] * # normal* 1570 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1571 \) # ) 1572 ) # special 1573 [^\\\x80-\xff\n\015()] * # normal* 1574 )* # )* 1575 \) # ) 1576 [\040\t]* )* # If comment found, allow more spaces. 1577 (?: 1578 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1579 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1580 # Atom 1581 | # or 1582 " # " 1583 [^\\\x80-\xff\n\015"] * # normal 1584 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )* 1585 " # " 1586 # Quoted string 1587 ) 1588 [\040\t]* # Nab whitespace. 1589 (?: 1590 \( # ( 1591 [^\\\x80-\xff\n\015()] * # normal* 1592 (?: # ( 1593 (?: \\ [^\x80-\xff] | 1594 \( # ( 1595 [^\\\x80-\xff\n\015()] * # normal* 1596 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1597 \) # ) 1598 ) # special 1599 [^\\\x80-\xff\n\015()] * # normal* 1600 )* # )* 1601 \) # ) 1602 [\040\t]* )* # If comment found, allow more spaces. 1603 # additional words 1604 )* 1605 @ 1606 [\040\t]* # Nab whitespace. 1607 (?: 1608 \( # ( 1609 [^\\\x80-\xff\n\015()] * # normal* 1610 (?: # ( 1611 (?: \\ [^\x80-\xff] | 1612 \( # ( 1613 [^\\\x80-\xff\n\015()] * # normal* 1614 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1615 \) # ) 1616 ) # special 1617 [^\\\x80-\xff\n\015()] * # normal* 1618 )* # )* 1619 \) # ) 1620 [\040\t]* )* # If comment found, allow more spaces. 1621 (?: 1622 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1623 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1624 | 1625 \[ # [ 1626 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1627 \] # ] 1628 ) 1629 [\040\t]* # Nab whitespace. 1630 (?: 1631 \( # ( 1632 [^\\\x80-\xff\n\015()] * # normal* 1633 (?: # ( 1634 (?: \\ [^\x80-\xff] | 1635 \( # ( 1636 [^\\\x80-\xff\n\015()] * # normal* 1637 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1638 \) # ) 1639 ) # special 1640 [^\\\x80-\xff\n\015()] * # normal* 1641 )* # )* 1642 \) # ) 1643 [\040\t]* )* # If comment found, allow more spaces. 1644 # optional trailing comments 1645 (?: 1646 \. 1647 [\040\t]* # Nab whitespace. 1648 (?: 1649 \( # ( 1650 [^\\\x80-\xff\n\015()] * # normal* 1651 (?: # ( 1652 (?: \\ [^\x80-\xff] | 1653 \( # ( 1654 [^\\\x80-\xff\n\015()] * # normal* 1655 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1656 \) # ) 1657 ) # special 1658 [^\\\x80-\xff\n\015()] * # normal* 1659 )* # )* 1660 \) # ) 1661 [\040\t]* )* # If comment found, allow more spaces. 1662 (?: 1663 [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+ # some number of atom characters... 1664 (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom 1665 | 1666 \[ # [ 1667 (?: [^\\\x80-\xff\n\015\[\]] | \\ [^\x80-\xff] )* # stuff 1668 \] # ] 1669 ) 1670 [\040\t]* # Nab whitespace. 1671 (?: 1672 \( # ( 1673 [^\\\x80-\xff\n\015()] * # normal* 1674 (?: # ( 1675 (?: \\ [^\x80-\xff] | 1676 \( # ( 1677 [^\\\x80-\xff\n\015()] * # normal* 1678 (?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)* 1679 \) # ) 1680 ) # special 1681 [^\\\x80-\xff\n\015()] * # normal* 1682 )* # )* 1683 \) # ) 1684 [\040\t]* )* # If comment found, allow more spaces. 1685 # optional trailing comments 1686 )* 1687 # address spec 1688 > # > 1689 # name and address 1690 ) 1691 /x 1692 Alan Other <user\@dom.ain> 1693 0: Alan Other <user (a] dom.ain> 1694 <user\@dom.ain> 1695 0: user (a] dom.ain 1696 user\@dom.ain 1697 0: user (a] dom.ain 1698 \"A. Other\" <user.1234\@dom.ain> (a comment) 1699 0: "A. Other" <user.1234 (a] dom.ain> 1700 A. Other <user.1234\@dom.ain> (a comment) 1701 0: Other <user.1234 (a] dom.ain> 1702 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 1703 0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay 1704 A missing angle <user\@some.where 1705 0: user (a] some.where 1706 \= Expect no match 1707 The quick brown fox 1708 No match 1709 1710 /abc\0def\00pqr\000xyz\0000AB/ 1711 abc\0def\00pqr\000xyz\0000AB 1712 0: abc\x00def\x00pqr\x00xyz\x000AB 1713 abc456 abc\0def\00pqr\000xyz\0000ABCDE 1714 0: abc\x00def\x00pqr\x00xyz\x000AB 1715 1716 /abc\x0def\x00pqr\x000xyz\x0000AB/ 1717 abc\x0def\x00pqr\x000xyz\x0000AB 1718 0: abc\x0def\x00pqr\x000xyz\x0000AB 1719 abc456 abc\x0def\x00pqr\x000xyz\x0000ABCDE 1720 0: abc\x0def\x00pqr\x000xyz\x0000AB 1721 1722 /^[\000-\037]/ 1723 \0A 1724 0: \x00 1725 \01B 1726 0: \x01 1727 \037C 1728 0: \x1f 1729 1730 /\0*/ 1731 \0\0\0\0 1732 0: \x00\x00\x00\x00 1733 1734 /A\x0{2,3}Z/ 1735 The A\x0\x0Z 1736 0: A\x00\x00Z 1737 An A\0\x0\0Z 1738 0: A\x00\x00\x00Z 1739 \= Expect no match 1740 A\0Z 1741 No match 1742 A\0\x0\0\x0Z 1743 No match 1744 1745 /^(cow|)\1(bell)/ 1746 cowcowbell 1747 0: cowcowbell 1748 1: cow 1749 2: bell 1750 bell 1751 0: bell 1752 1: 1753 2: bell 1754 \= Expect no match 1755 cowbell 1756 No match 1757 1758 /^\s/ 1759 \040abc 1760 0: 1761 \x0cabc 1762 0: \x0c 1763 \nabc 1764 0: \x0a 1765 \rabc 1766 0: \x0d 1767 \tabc 1768 0: \x09 1769 \= Expect no match 1770 abc 1771 No match 1772 1773 /^a b 1774 c/x 1776 abc 1777 0: abc 1778 1779 /^(a|)\1*b/ 1780 ab 1781 0: ab 1782 1: a 1783 aaaab 1784 0: aaaab 1785 1: a 1786 b 1787 0: b 1788 1: 1789 \= Expect no match 1790 acb 1791 No match 1792 1793 /^(a|)\1+b/ 1794 aab 1795 0: aab 1796 1: a 1797 aaaab 1798 0: aaaab 1799 1: a 1800 b 1801 0: b 1802 1: 1803 \= Expect no match 1804 ab 1805 No match 1806 1807 /^(a|)\1?b/ 1808 ab 1809 0: ab 1810 1: a 1811 aab 1812 0: aab 1813 1: a 1814 b 1815 0: b 1816 1: 1817 \= Expect no match 1818 acb 1819 No match 1820 1821 /^(a|)\1{2}b/ 1822 aaab 1823 0: aaab 1824 1: a 1825 b 1826 0: b 1827 1: 1828 \= Expect no match 1829 ab 1830 No match 1831 aab 1832 No match 1833 aaaab 1834 No match 1835 1836 /^(a|)\1{2,3}b/ 1837 aaab 1838 0: aaab 1839 1: a 1840 aaaab 1841 0: aaaab 1842 1: a 1843 b 1844 0: b 1845 1: 1846 \= Expect no match 1847 ab 1848 No match 1849 aab 1850 No match 1851 aaaaab 1852 No match 1853 1854 /ab{1,3}bc/ 1855 abbbbc 1856 0: abbbbc 1857 abbbc 1858 0: abbbc 1859 abbc 1860 0: abbc 1861 \= Expect no match 1862 abc 1863 No match 1864 abbbbbc 1865 No match 1866 1867 /([^.]*)\.([^:]*):[T ]+(.*)/ 1868 track1.title:TBlah blah blah 1869 0: track1.title:TBlah blah blah 1870 1: track1 1871 2: title 1872 3: Blah blah blah 1873 1874 /([^.]*)\.([^:]*):[T ]+(.*)/i 1875 track1.title:TBlah blah blah 1876 0: track1.title:TBlah blah blah 1877 1: track1 1878 2: title 1879 3: Blah blah blah 1880 1881 /([^.]*)\.([^:]*):[t ]+(.*)/i 1882 track1.title:TBlah blah blah 1883 0: track1.title:TBlah blah blah 1884 1: track1 1885 2: title 1886 3: Blah blah blah 1887 1888 /^[W-c]+$/ 1889 WXY_^abc 1890 0: WXY_^abc 1891 \= Expect no match 1892 wxy 1893 No match 1894 1895 /^[W-c]+$/i 1896 WXY_^abc 1897 0: WXY_^abc 1898 wxy_^ABC 1899 0: wxy_^ABC 1900 1901 /^[\x3f-\x5F]+$/i 1902 WXY_^abc 1903 0: WXY_^abc 1904 wxy_^ABC 1905 0: wxy_^ABC 1906 1907 /^abc$/m 1908 abc 1909 0: abc 1910 qqq\nabc 1911 0: abc 1912 abc\nzzz 1913 0: abc 1914 qqq\nabc\nzzz 1915 0: abc 1916 1917 /^abc$/ 1918 abc 1919 0: abc 1920 \= Expect no match 1921 qqq\nabc 1922 No match 1923 abc\nzzz 1924 No match 1925 qqq\nabc\nzzz 1926 No match 1927 1928 /\Aabc\Z/m 1929 abc 1930 0: abc 1931 abc\n 1932 0: abc 1933 \= Expect no match 1934 qqq\nabc 1935 No match 1936 abc\nzzz 1937 No match 1938 qqq\nabc\nzzz 1939 No match 1940 1941 /\A(.)*\Z/s 1942 abc\ndef 1943 0: abc\x0adef 1944 1: f 1945 1946 /\A(.)*\Z/m 1947 \= Expect no match 1948 abc\ndef 1949 No match 1950 1951 /(?:b)|(?::+)/ 1952 b::c 1953 0: b 1954 c::b 1955 0: :: 1956 1957 /[-az]+/ 1958 az- 1959 0: az- 1960 \= Expect no match 1961 b 1962 No match 1963 1964 /[az-]+/ 1965 za- 1966 0: za- 1967 \= Expect no match 1968 b 1969 No match 1970 1971 /[a\-z]+/ 1972 a-z 1973 0: a-z 1974 \= Expect no match 1975 b 1976 No match 1977 1978 /[a-z]+/ 1979 abcdxyz 1980 0: abcdxyz 1981 1982 /[\d-]+/ 1983 12-34 1984 0: 12-34 1985 \= Expect no match 1986 aaa 1987 No match 1988 1989 /\x5c/ 1990 \\ 1991 0: \ 1992 1993 /\x20Z/ 1994 the Zoo 1995 0: Z 1996 \= Expect no match 1997 Zulu 1998 No match 1999 2000 /(abc)\1/i 2001 abcabc 2002 0: abcabc 2003 1: abc 2004 ABCabc 2005 0: ABCabc 2006 1: ABC 2007 abcABC 2008 0: abcABC 2009 1: abc 2010 2011 /abc$/ 2012 abc 2013 0: abc 2014 abc\n 2015 0: abc 2016 \= Expect no match 2017 abc\ndef 2018 No match 2019 2020 /(abc)\123/ 2021 abc\x53 2022 0: abcS 2023 1: abc 2024 2025 /(abc)\223/ 2026 abc\x93 2027 0: abc\x93 2028 1: abc 2029 2030 /(abc)\323/ 2031 abc\xd3 2032 0: abc\xd3 2033 1: abc 2034 2035 /(abc)\100/ 2036 abc\x40 2037 0: abc@ 2038 1: abc 2039 abc\100 2040 0: abc@ 2041 1: abc 2042 2043 /(abc)\1000/ 2044 abc\x400 2045 0: abc@0 2046 1: abc 2047 abc\x40\x30 2048 0: abc@0 2049 1: abc 2050 abc\1000 2051 0: abc@0 2052 1: abc 2053 abc\100\x30 2054 0: abc@0 2055 1: abc 2056 abc\100\060 2057 0: abc@0 2058 1: abc 2059 abc\100\60 2060 0: abc@0 2061 1: abc 2062 2063 /^(A)(B)(C)(D)(E)(F)(G)(H)(I)\8\9$/ 2064 ABCDEFGHIHI 2065 0: ABCDEFGHIHI 2066 1: A 2067 2: B 2068 3: C 2069 4: D 2070 5: E 2071 6: F 2072 7: G 2073 8: H 2074 9: I 2075 2076 /^[A\8B\9C]+$/ 2077 A8B9C 2078 0: A8B9C 2079 \= Expect no match 2080 A8B9C\x00 2081 No match 2082 2083 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\12\123/ 2084 abcdefghijkllS 2085 0: abcdefghijkllS 2086 1: a 2087 2: b 2088 3: c 2089 4: d 2090 5: e 2091 6: f 2092 7: g 2093 8: h 2094 9: i 2095 10: j 2096 11: k 2097 12: l 2098 2099 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12\123/ 2100 abcdefghijk\12S 2101 0: abcdefghijk\x0aS 2102 1: a 2103 2: b 2104 3: c 2105 4: d 2106 5: e 2107 6: f 2108 7: g 2109 8: h 2110 9: i 2111 10: j 2112 11: k 2113 2114 /a{0}bc/ 2115 bc 2116 0: bc 2117 2118 /(a|(bc)){0,0}?xyz/ 2119 xyz 2120 0: xyz 2121 2122 /abc[\10]de/ 2123 abc\010de 2124 0: abc\x08de 2125 2126 /abc[\1]de/ 2127 abc\1de 2128 0: abc\x01de 2129 2130 /(abc)[\1]de/ 2131 abc\1de 2132 0: abc\x01de 2133 1: abc 2134 2135 /(?s)a.b/ 2136 a\nb 2137 0: a\x0ab 2138 2139 /^([^a])([^\b])([^c]*)([^d]{3,4})/ 2140 baNOTccccd 2141 0: baNOTcccc 2142 1: b 2143 2: a 2144 3: NOT 2145 4: cccc 2146 baNOTcccd 2147 0: baNOTccc 2148 1: b 2149 2: a 2150 3: NOT 2151 4: ccc 2152 baNOTccd 2153 0: baNOTcc 2154 1: b 2155 2: a 2156 3: NO 2157 4: Tcc 2158 bacccd 2159 0: baccc 2160 1: b 2161 2: a 2162 3: 2163 4: ccc 2164 \= Expect no match 2165 anything 2166 No match 2167 b\bc 2168 No match 2169 baccd 2170 No match 2171 2172 /[^a]/ 2173 Abc 2174 0: A 2175 2176 /[^a]/i 2177 Abc 2178 0: b 2179 2180 /[^a]+/ 2181 AAAaAbc 2182 0: AAA 2183 2184 /[^a]+/i 2185 AAAaAbc 2186 0: bc 2187 2188 /[^a]+/ 2189 bbb\nccc 2190 0: bbb\x0accc 2191 2192 /[^k]$/ 2193 abc 2194 0: c 2195 \= Expect no match 2196 abk 2197 No match 2198 2199 /[^k]{2,3}$/ 2200 abc 2201 0: abc 2202 kbc 2203 0: bc 2204 kabc 2205 0: abc 2206 \= Expect no match 2207 abk 2208 No match 2209 akb 2210 No match 2211 akk 2212 No match 2213 2214 /^\d{8,}\@.+[^k]$/ 2215 12345678\@a.b.c.d 2216 0: 12345678 (a] a.b.c.d 2217 123456789\@x.y.z 2218 0: 123456789 (a] x.y.z 2219 \= Expect no match 2220 12345678\@x.y.uk 2221 No match 2222 1234567\@a.b.c.d 2223 No match 2224 2225 /(a)\1{8,}/ 2226 aaaaaaaaa 2227 0: aaaaaaaaa 2228 1: a 2229 aaaaaaaaaa 2230 0: aaaaaaaaaa 2231 1: a 2232 \= Expect no match 2233 aaaaaaa 2234 No match 2235 2236 /[^a]/ 2237 aaaabcd 2238 0: b 2239 aaAabcd 2240 0: A 2241 2242 /[^a]/i 2243 aaaabcd 2244 0: b 2245 aaAabcd 2246 0: b 2247 2248 /[^az]/ 2249 aaaabcd 2250 0: b 2251 aaAabcd 2252 0: A 2253 2254 /[^az]/i 2255 aaaabcd 2256 0: b 2257 aaAabcd 2258 0: b 2259 2260 /\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/ 2261 \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 2262 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 2263 2264 /P[^*]TAIRE[^*]{1,6}?LL/ 2265 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 2266 0: PSTAIREISLL 2267 2268 /P[^*]TAIRE[^*]{1,}?LL/ 2269 xxxxxxxxxxxPSTAIREISLLxxxxxxxxx 2270 0: PSTAIREISLL 2271 2272 /(\.\d\d[1-9]?)\d+/ 2273 1.230003938 2274 0: .230003938 2275 1: .23 2276 1.875000282 2277 0: .875000282 2278 1: .875 2279 1.235 2280 0: .235 2281 1: .23 2282 2283 /(\.\d\d((?=0)|\d(?=\d)))/ 2284 1.230003938 2285 0: .23 2286 1: .23 2287 2: 2288 1.875000282 2289 0: .875 2290 1: .875 2291 2: 5 2292 \= Expect no match 2293 1.235 2294 No match 2295 2296 /a(?)b/ 2297 ab 2298 0: ab 2299 2300 /\b(foo)\s+(\w+)/i 2301 Food is on the foo table 2302 0: foo table 2303 1: foo 2304 2: table 2305 2306 /foo(.*)bar/ 2307 The food is under the bar in the barn. 2308 0: food is under the bar in the bar 2309 1: d is under the bar in the 2310 2311 /foo(.*?)bar/ 2312 The food is under the bar in the barn. 2313 0: food is under the bar 2314 1: d is under the 2315 2316 /(.*)(\d*)/ 2317 I have 2 numbers: 53147 2318 0: I have 2 numbers: 53147 2319 1: I have 2 numbers: 53147 2320 2: 2321 2322 /(.*)(\d+)/ 2323 I have 2 numbers: 53147 2324 0: I have 2 numbers: 53147 2325 1: I have 2 numbers: 5314 2326 2: 7 2327 2328 /(.*?)(\d*)/ 2329 I have 2 numbers: 53147 2330 0: 2331 1: 2332 2: 2333 2334 /(.*?)(\d+)/ 2335 I have 2 numbers: 53147 2336 0: I have 2 2337 1: I have 2338 2: 2 2339 2340 /(.*)(\d+)$/ 2341 I have 2 numbers: 53147 2342 0: I have 2 numbers: 53147 2343 1: I have 2 numbers: 5314 2344 2: 7 2345 2346 /(.*?)(\d+)$/ 2347 I have 2 numbers: 53147 2348 0: I have 2 numbers: 53147 2349 1: I have 2 numbers: 2350 2: 53147 2351 2352 /(.*)\b(\d+)$/ 2353 I have 2 numbers: 53147 2354 0: I have 2 numbers: 53147 2355 1: I have 2 numbers: 2356 2: 53147 2357 2358 /(.*\D)(\d+)$/ 2359 I have 2 numbers: 53147 2360 0: I have 2 numbers: 53147 2361 1: I have 2 numbers: 2362 2: 53147 2363 2364 /^\D*(?!123)/ 2365 ABC123 2366 0: AB 2367 2368 /^(\D*)(?=\d)(?!123)/ 2369 ABC445 2370 0: ABC 2371 1: ABC 2372 \= Expect no match 2373 ABC123 2374 No match 2375 2376 /^[W-]46]/ 2377 W46]789 2378 0: W46] 2379 -46]789 2380 0: -46] 2381 \= Expect no match 2382 Wall 2383 No match 2384 Zebra 2385 No match 2386 42 2387 No match 2388 [abcd] 2389 No match 2390 ]abcd[ 2391 No match 2392 2393 /^[W-\]46]/ 2394 W46]789 2395 0: W 2396 Wall 2397 0: W 2398 Zebra 2399 0: Z 2400 Xylophone 2401 0: X 2402 42 2403 0: 4 2404 [abcd] 2405 0: [ 2406 ]abcd[ 2407 0: ] 2408 \\backslash 2409 0: \ 2410 \= Expect no match 2411 -46]789 2412 No match 2413 well 2414 No match 2415 2416 /\d\d\/\d\d\/\d\d\d\d/ 2417 01/01/2000 2418 0: 01/01/2000 2419 2420 /word (?:[a-zA-Z0-9]+ ){0,10}otherword/ 2421 word cat dog elephant mussel cow horse canary baboon snake shark otherword 2422 0: word cat dog elephant mussel cow horse canary baboon snake shark otherword 2423 \= Expect no match 2424 word cat dog elephant mussel cow horse canary baboon snake shark 2425 No match 2426 2427 /word (?:[a-zA-Z0-9]+ ){0,300}otherword/ 2428 \= Expect no match 2429 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 2430 No match 2431 2432 /^(a){0,0}/ 2433 bcd 2434 0: 2435 abc 2436 0: 2437 aab 2438 0: 2439 2440 /^(a){0,1}/ 2441 bcd 2442 0: 2443 abc 2444 0: a 2445 1: a 2446 aab 2447 0: a 2448 1: a 2449 2450 /^(a){0,2}/ 2451 bcd 2452 0: 2453 abc 2454 0: a 2455 1: a 2456 aab 2457 0: aa 2458 1: a 2459 2460 /^(a){0,3}/ 2461 bcd 2462 0: 2463 abc 2464 0: a 2465 1: a 2466 aab 2467 0: aa 2468 1: a 2469 aaa 2470 0: aaa 2471 1: a 2472 2473 /^(a){0,}/ 2474 bcd 2475 0: 2476 abc 2477 0: a 2478 1: a 2479 aab 2480 0: aa 2481 1: a 2482 aaa 2483 0: aaa 2484 1: a 2485 aaaaaaaa 2486 0: aaaaaaaa 2487 1: a 2488 2489 /^(a){1,1}/ 2490 abc 2491 0: a 2492 1: a 2493 aab 2494 0: a 2495 1: a 2496 \= Expect no match 2497 bcd 2498 No match 2499 2500 /^(a){1,2}/ 2501 abc 2502 0: a 2503 1: a 2504 aab 2505 0: aa 2506 1: a 2507 \= Expect no match 2508 bcd 2509 No match 2510 2511 /^(a){1,3}/ 2512 abc 2513 0: a 2514 1: a 2515 aab 2516 0: aa 2517 1: a 2518 aaa 2519 0: aaa 2520 1: a 2521 \= Expect no match 2522 bcd 2523 No match 2524 2525 /^(a){1,}/ 2526 abc 2527 0: a 2528 1: a 2529 aab 2530 0: aa 2531 1: a 2532 aaa 2533 0: aaa 2534 1: a 2535 aaaaaaaa 2536 0: aaaaaaaa 2537 1: a 2538 \= Expect no match 2539 bcd 2540 No match 2541 2542 /.*\.gif/ 2543 borfle\nbib.gif\nno 2544 0: bib.gif 2545 2546 /.{0,}\.gif/ 2547 borfle\nbib.gif\nno 2548 0: bib.gif 2549 2550 /.*\.gif/m 2551 borfle\nbib.gif\nno 2552 0: bib.gif 2553 2554 /.*\.gif/s 2555 borfle\nbib.gif\nno 2556 0: borfle\x0abib.gif 2557 2558 /.*\.gif/ms 2559 borfle\nbib.gif\nno 2560 0: borfle\x0abib.gif 2561 2562 /.*$/ 2563 borfle\nbib.gif\nno 2564 0: no 2565 2566 /.*$/m 2567 borfle\nbib.gif\nno 2568 0: borfle 2569 2570 /.*$/s 2571 borfle\nbib.gif\nno 2572 0: borfle\x0abib.gif\x0ano 2573 2574 /.*$/ms 2575 borfle\nbib.gif\nno 2576 0: borfle\x0abib.gif\x0ano 2577 2578 /.*$/ 2579 borfle\nbib.gif\nno\n 2580 0: no 2581 2582 /.*$/m 2583 borfle\nbib.gif\nno\n 2584 0: borfle 2585 2586 /.*$/s 2587 borfle\nbib.gif\nno\n 2588 0: borfle\x0abib.gif\x0ano\x0a 2589 2590 /.*$/ms 2591 borfle\nbib.gif\nno\n 2592 0: borfle\x0abib.gif\x0ano\x0a 2593 2594 /(.*X|^B)/ 2595 abcde\n1234Xyz 2596 0: 1234X 2597 1: 1234X 2598 BarFoo 2599 0: B 2600 1: B 2601 \= Expect no match 2602 abcde\nBar 2603 No match 2604 2605 /(.*X|^B)/m 2606 abcde\n1234Xyz 2607 0: 1234X 2608 1: 1234X 2609 BarFoo 2610 0: B 2611 1: B 2612 abcde\nBar 2613 0: B 2614 1: B 2615 2616 /(.*X|^B)/s 2617 abcde\n1234Xyz 2618 0: abcde\x0a1234X 2619 1: abcde\x0a1234X 2620 BarFoo 2621 0: B 2622 1: B 2623 \= Expect no match 2624 abcde\nBar 2625 No match 2626 2627 /(.*X|^B)/ms 2628 abcde\n1234Xyz 2629 0: abcde\x0a1234X 2630 1: abcde\x0a1234X 2631 BarFoo 2632 0: B 2633 1: B 2634 abcde\nBar 2635 0: B 2636 1: B 2637 2638 /(?s)(.*X|^B)/ 2639 abcde\n1234Xyz 2640 0: abcde\x0a1234X 2641 1: abcde\x0a1234X 2642 BarFoo 2643 0: B 2644 1: B 2645 \= Expect no match 2646 abcde\nBar 2647 No match 2648 2649 /(?s:.*X|^B)/ 2650 abcde\n1234Xyz 2651 0: abcde\x0a1234X 2652 BarFoo 2653 0: B 2654 \= Expect no match 2655 abcde\nBar 2656 No match 2657 2658 /^.*B/ 2659 \= Expect no match 2660 abc\nB 2661 No match 2662 2663 /(?s)^.*B/ 2664 abc\nB 2665 0: abc\x0aB 2666 2667 /(?m)^.*B/ 2668 abc\nB 2669 0: B 2670 2671 /(?ms)^.*B/ 2672 abc\nB 2673 0: abc\x0aB 2674 2675 /(?ms)^B/ 2676 abc\nB 2677 0: B 2678 2679 /(?s)B$/ 2680 B\n 2681 0: B 2682 2683 /^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/ 2684 123456654321 2685 0: 123456654321 2686 2687 /^\d\d\d\d\d\d\d\d\d\d\d\d/ 2688 123456654321 2689 0: 123456654321 2690 2691 /^[\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d]/ 2692 123456654321 2693 0: 123456654321 2694 2695 /^[abc]{12}/ 2696 abcabcabcabc 2697 0: abcabcabcabc 2698 2699 /^[a-c]{12}/ 2700 abcabcabcabc 2701 0: abcabcabcabc 2702 2703 /^(a|b|c){12}/ 2704 abcabcabcabc 2705 0: abcabcabcabc 2706 1: c 2707 2708 /^[abcdefghijklmnopqrstuvwxy0123456789]/ 2709 n 2710 0: n 2711 \= Expect no match 2712 z 2713 No match 2714 2715 /abcde{0,0}/ 2716 abcd 2717 0: abcd 2718 \= Expect no match 2719 abce 2720 No match 2721 2722 /ab[cd]{0,0}e/ 2723 abe 2724 0: abe 2725 \= Expect no match 2726 abcde 2727 No match 2728 2729 /ab(c){0,0}d/ 2730 abd 2731 0: abd 2732 \= Expect no match 2733 abcd 2734 No match 2735 2736 /a(b*)/ 2737 a 2738 0: a 2739 1: 2740 ab 2741 0: ab 2742 1: b 2743 abbbb 2744 0: abbbb 2745 1: bbbb 2746 \= Expect no match 2747 bbbbb 2748 No match 2749 2750 /ab\d{0}e/ 2751 abe 2752 0: abe 2753 \= Expect no match 2754 ab1e 2755 No match 2756 2757 /"([^\\"]+|\\.)*"/ 2758 the \"quick\" brown fox 2759 0: "quick" 2760 1: quick 2761 \"the \\\"quick\\\" brown fox\" 2762 0: "the \"quick\" brown fox" 2763 1: brown fox 2764 2765 /.*?/g,aftertext 2766 abc 2767 0: 2768 0+ abc 2769 0: a 2770 0+ bc 2771 0: 2772 0+ bc 2773 0: b 2774 0+ c 2775 0: 2776 0+ c 2777 0: c 2778 0+ 2779 0: 2780 0+ 2781 2782 /\b/g,aftertext 2783 abc 2784 0: 2785 0+ abc 2786 0: 2787 0+ 2788 2789 /\b/g,aftertext 2790 abc 2791 0: 2792 0+ abc 2793 0: 2794 0+ 2795 2796 //g 2797 abc 2798 0: 2799 0: 2800 0: 2801 0: 2802 2803 /<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 2804 <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> 2805 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> 2806 1: BGCOLOR='#DBE9E9' 2807 2: align=left valign=top 2808 3: 43. 2809 4: <a href='joblist.cfm?JobID=94 6735&Keyword='>Word Processor<BR>(N-1286) 2810 5: 2811 6: 2812 7: <unset> 2813 8: align=left valign=top 2814 9: Lega lstaff.com 2815 10: align=left valign=top 2816 11: CA - Statewide 2817 2818 /a[^a]b/ 2819 acb 2820 0: acb 2821 a\nb 2822 0: a\x0ab 2823 2824 /a.b/ 2825 acb 2826 0: acb 2827 \= Expect no match 2828 a\nb 2829 No match 2830 2831 /a[^a]b/s 2832 acb 2833 0: acb 2834 a\nb 2835 0: a\x0ab 2836 2837 /a.b/s 2838 acb 2839 0: acb 2840 a\nb 2841 0: a\x0ab 2842 2843 /^(b+?|a){1,2}?c/ 2844 bac 2845 0: bac 2846 1: a 2847 bbac 2848 0: bbac 2849 1: a 2850 bbbac 2851 0: bbbac 2852 1: a 2853 bbbbac 2854 0: bbbbac 2855 1: a 2856 bbbbbac 2857 0: bbbbbac 2858 1: a 2859 2860 /^(b+|a){1,2}?c/ 2861 bac 2862 0: bac 2863 1: a 2864 bbac 2865 0: bbac 2866 1: a 2867 bbbac 2868 0: bbbac 2869 1: a 2870 bbbbac 2871 0: bbbbac 2872 1: a 2873 bbbbbac 2874 0: bbbbbac 2875 1: a 2876 2877 /(?!\A)x/m 2878 a\bx\n 2879 0: x 2880 a\nx\n 2881 0: x 2882 \= Expect no match 2883 x\nb\n 2884 No match 2885 2886 /(A|B)*?CD/ 2887 CD 2888 0: CD 2889 2890 /(A|B)*CD/ 2891 CD 2892 0: CD 2893 2894 /(AB)*?\1/ 2895 ABABAB 2896 0: ABAB 2897 1: AB 2898 2899 /(AB)*\1/ 2900 ABABAB 2901 0: ABABAB 2902 1: AB 2903 2904 /(?<!bar)foo/ 2905 foo 2906 0: foo 2907 catfood 2908 0: foo 2909 arfootle 2910 0: foo 2911 rfoosh 2912 0: foo 2913 \= Expect no match 2914 barfoo 2915 No match 2916 towbarfoo 2917 No match 2918 2919 /\w{3}(?<!bar)foo/ 2920 catfood 2921 0: catfoo 2922 \= Expect no match 2923 foo 2924 No match 2925 barfoo 2926 No match 2927 towbarfoo 2928 No match 2929 2930 /(?<=(foo)a)bar/ 2931 fooabar 2932 0: bar 2933 1: foo 2934 \= Expect no match 2935 bar 2936 No match 2937 foobbar 2938 No match 2939 2940 /\Aabc\z/m 2941 abc 2942 0: abc 2943 \= Expect no match 2944 abc\n 2945 No match 2946 qqq\nabc 2947 No match 2948 abc\nzzz 2949 No match 2950 qqq\nabc\nzzz 2951 No match 2952 2953 "(?>.*/)foo" 2954 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo 2955 0: /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo 2956 \= Expect no match 2957 /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/ 2958 No match 2959 2960 /(?>(\.\d\d[1-9]?))\d+/ 2961 1.230003938 2962 0: .230003938 2963 1: .23 2964 1.875000282 2965 0: .875000282 2966 1: .875 2967 \= Expect no match 2968 1.235 2969 No match 2970 2971 /^((?>\w+)|(?>\s+))*$/ 2972 now is the time for all good men to come to the aid of the party 2973 0: now is the time for all good men to come to the aid of the party 2974 1: party 2975 \= Expect no match 2976 this is not a line with only words and spaces! 2977 No match 2978 2979 /(\d+)(\w)/ 2980 12345a 2981 0: 12345a 2982 1: 12345 2983 2: a 2984 12345+ 2985 0: 12345 2986 1: 1234 2987 2: 5 2988 2989 /((?>\d+))(\w)/ 2990 12345a 2991 0: 12345a 2992 1: 12345 2993 2: a 2994 \= Expect no match 2995 12345+ 2996 No match 2997 2998 /(?>a+)b/ 2999 aaab 3000 0: aaab 3001 3002 /((?>a+)b)/ 3003 aaab 3004 0: aaab 3005 1: aaab 3006 3007 /(?>(a+))b/ 3008 aaab 3009 0: aaab 3010 1: aaa 3011 3012 /(?>b)+/ 3013 aaabbbccc 3014 0: bbb 3015 3016 /(?>a+|b+|c+)*c/ 3017 aaabbbbccccd 3018 0: aaabbbbc 3019 3020 /((?>[^()]+)|\([^()]*\))+/ 3021 ((abc(ade)ufh()()x 3022 0: abc(ade)ufh()()x 3023 1: x 3024 3025 /\(((?>[^()]+)|\([^()]+\))+\)/ 3026 (abc) 3027 0: (abc) 3028 1: abc 3029 (abc(def)xyz) 3030 0: (abc(def)xyz) 3031 1: xyz 3032 \= Expect no match 3033 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 3034 No match 3035 3036 /a(?-i)b/i 3037 ab 3038 0: ab 3039 Ab 3040 0: Ab 3041 \= Expect no match 3042 aB 3043 No match 3044 AB 3045 No match 3046 3047 /(a (?x)b c)d e/ 3048 a bcd e 3049 0: a bcd e 3050 1: a bc 3051 \= Expect no match 3052 a b cd e 3053 No match 3054 abcd e 3055 No match 3056 a bcde 3057 No match 3058 3059 /(a b(?x)c d (?-x)e f)/ 3060 a bcde f 3061 0: a bcde f 3062 1: a bcde f 3063 \= Expect no match 3064 abcdef 3065 No match 3066 3067 /(a(?i)b)c/ 3068 abc 3069 0: abc 3070 1: ab 3071 aBc 3072 0: aBc 3073 1: aB 3074 \= Expect no match 3075 abC 3076 No match 3077 aBC 3078 No match 3079 Abc 3080 No match 3081 ABc 3082 No match 3083 ABC 3084 No match 3085 AbC 3086 No match 3087 3088 /a(?i:b)c/ 3089 abc 3090 0: abc 3091 aBc 3092 0: aBc 3093 \= Expect no match 3094 ABC 3095 No match 3096 abC 3097 No match 3098 aBC 3099 No match 3100 3101 /a(?i:b)*c/ 3102 aBc 3103 0: aBc 3104 aBBc 3105 0: aBBc 3106 \= Expect no match 3107 aBC 3108 No match 3109 aBBC 3110 No match 3111 3112 /a(?=b(?i)c)\w\wd/ 3113 abcd 3114 0: abcd 3115 abCd 3116 0: abCd 3117 \= Expect no match 3118 aBCd 3119 No match 3120 abcD 3121 No match 3122 3123 /(?s-i:more.*than).*million/i 3124 more than million 3125 0: more than million 3126 more than MILLION 3127 0: more than MILLION 3128 more \n than Million 3129 0: more \x0a than Million 3130 \= Expect no match 3131 MORE THAN MILLION 3132 No match 3133 more \n than \n million 3134 No match 3135 3136 /(?:(?s-i)more.*than).*million/i 3137 more than million 3138 0: more than million 3139 more than MILLION 3140 0: more than MILLION 3141 more \n than Million 3142 0: more \x0a than Million 3143 \= Expect no match 3144 MORE THAN MILLION 3145 No match 3146 more \n than \n million 3147 No match 3148 3149 /(?>a(?i)b+)+c/ 3150 abc 3151 0: abc 3152 aBbc 3153 0: aBbc 3154 aBBc 3155 0: aBBc 3156 \= Expect no match 3157 Abc 3158 No match 3159 abAb 3160 No match 3161 abbC 3162 No match 3163 3164 /(?=a(?i)b)\w\wc/ 3165 abc 3166 0: abc 3167 aBc 3168 0: aBc 3169 \= Expect no match 3170 Ab 3171 No match 3172 abC 3173 No match 3174 aBC 3175 No match 3176 3177 /(?<=a(?i)b)(\w\w)c/ 3178 abxxc 3179 0: xxc 3180 1: xx 3181 aBxxc 3182 0: xxc 3183 1: xx 3184 \= Expect no match 3185 Abxxc 3186 No match 3187 ABxxc 3188 No match 3189 abxxC 3190 No match 3191 3192 /(?:(a)|b)(?(1)A|B)/ 3193 aA 3194 0: aA 3195 1: a 3196 bB 3197 0: bB 3198 \= Expect no match 3199 aB 3200 No match 3201 bA 3202 No match 3203 3204 /^(a)?(?(1)a|b)+$/ 3205 aa 3206 0: aa 3207 1: a 3208 b 3209 0: b 3210 bb 3211 0: bb 3212 \= Expect no match 3213 ab 3214 No match 3215 3216 # Perl gets this next one wrong if the pattern ends with $; in that case it 3217 # fails to match "12". 3218 3219 /^(?(?=abc)\w{3}:|\d\d)/ 3220 abc: 3221 0: abc: 3222 12 3223 0: 12 3224 123 3225 0: 12 3226 \= Expect no match 3227 xyz 3228 No match 3229 3230 /^(?(?!abc)\d\d|\w{3}:)$/ 3231 abc: 3232 0: abc: 3233 12 3234 0: 12 3235 \= Expect no match 3236 123 3237 No match 3238 xyz 3239 No match 3240 3241 /(?(?<=foo)bar|cat)/ 3242 foobar 3243 0: bar 3244 cat 3245 0: cat 3246 fcat 3247 0: cat 3248 focat 3249 0: cat 3250 \= Expect no match 3251 foocat 3252 No match 3253 3254 /(?(?<!foo)cat|bar)/ 3255 foobar 3256 0: bar 3257 cat 3258 0: cat 3259 fcat 3260 0: cat 3261 focat 3262 0: cat 3263 \= Expect no match 3264 foocat 3265 No match 3266 3267 /( \( )? [^()]+ (?(1) \) |) /x 3268 abcd 3269 0: abcd 3270 (abcd) 3271 0: (abcd) 3272 1: ( 3273 the quick (abcd) fox 3274 0: the quick 3275 (abcd 3276 0: abcd 3277 3278 /( \( )? [^()]+ (?(1) \) ) /x 3279 abcd 3280 0: abcd 3281 (abcd) 3282 0: (abcd) 3283 1: ( 3284 the quick (abcd) fox 3285 0: the quick 3286 (abcd 3287 0: abcd 3288 3289 /^(?(2)a|(1)(2))+$/ 3290 12 3291 0: 12 3292 1: 1 3293 2: 2 3294 12a 3295 0: 12a 3296 1: 1 3297 2: 2 3298 12aa 3299 0: 12aa 3300 1: 1 3301 2: 2 3302 \= Expect no match 3303 1234 3304 No match 3305 3306 /((?i)blah)\s+\1/ 3307 blah blah 3308 0: blah blah 3309 1: blah 3310 BLAH BLAH 3311 0: BLAH BLAH 3312 1: BLAH 3313 Blah Blah 3314 0: Blah Blah 3315 1: Blah 3316 blaH blaH 3317 0: blaH blaH 3318 1: blaH 3319 \= Expect no match 3320 blah BLAH 3321 No match 3322 Blah blah 3323 No match 3324 blaH blah 3325 No match 3326 3327 /((?i)blah)\s+(?i:\1)/ 3328 blah blah 3329 0: blah blah 3330 1: blah 3331 BLAH BLAH 3332 0: BLAH BLAH 3333 1: BLAH 3334 Blah Blah 3335 0: Blah Blah 3336 1: Blah 3337 blaH blaH 3338 0: blaH blaH 3339 1: blaH 3340 blah BLAH 3341 0: blah BLAH 3342 1: blah 3343 Blah blah 3344 0: Blah blah 3345 1: Blah 3346 blaH blah 3347 0: blaH blah 3348 1: blaH 3349 3350 /((?i)blah)\s+(?m)A(?i:\1)/ 3351 blah ABLAH 3352 0: blah ABLAH 3353 1: blah 3354 \= Expect no match 3355 blah aBLAH 3356 No match 3357 3358 /(?>a*)*/ 3359 a 3360 0: a 3361 aa 3362 0: aa 3363 aaaa 3364 0: aaaa 3365 3366 /(abc|)+/ 3367 abc 3368 0: abc 3369 1: 3370 abcabc 3371 0: abcabc 3372 1: 3373 abcabcabc 3374 0: abcabcabc 3375 1: 3376 xyz 3377 0: 3378 1: 3379 3380 /([a]*)*/ 3381 a 3382 0: a 3383 1: 3384 aaaaa 3385 0: aaaaa 3386 1: 3387 3388 /([ab]*)*/ 3389 a 3390 0: a 3391 1: 3392 b 3393 0: b 3394 1: 3395 ababab 3396 0: ababab 3397 1: 3398 aaaabcde 3399 0: aaaab 3400 1: 3401 bbbb 3402 0: bbbb 3403 1: 3404 3405 /([^a]*)*/ 3406 b 3407 0: b 3408 1: 3409 bbbb 3410 0: bbbb 3411 1: 3412 aaa 3413 0: 3414 1: 3415 3416 /([^ab]*)*/ 3417 cccc 3418 0: cccc 3419 1: 3420 abab 3421 0: 3422 1: 3423 3424 /([a]*?)*/ 3425 a 3426 0: 3427 1: 3428 aaaa 3429 0: 3430 1: 3431 3432 /([ab]*?)*/ 3433 a 3434 0: 3435 1: 3436 b 3437 0: 3438 1: 3439 abab 3440 0: 3441 1: 3442 baba 3443 0: 3444 1: 3445 3446 /([^a]*?)*/ 3447 b 3448 0: 3449 1: 3450 bbbb 3451 0: 3452 1: 3453 aaa 3454 0: 3455 1: 3456 3457 /([^ab]*?)*/ 3458 c 3459 0: 3460 1: 3461 cccc 3462 0: 3463 1: 3464 baba 3465 0: 3466 1: 3467 3468 /(?>a*)*/ 3469 a 3470 0: a 3471 aaabcde 3472 0: aaa 3473 3474 /((?>a*))*/ 3475 aaaaa 3476 0: aaaaa 3477 1: 3478 aabbaa 3479 0: aa 3480 1: 3481 3482 /((?>a*?))*/ 3483 aaaaa 3484 0: 3485 1: 3486 aabbaa 3487 0: 3488 1: 3489 3490 /(?(?=[^a-z]+[a-z]) \d{2}-[a-z]{3}-\d{2} | \d{2}-\d{2}-\d{2} ) /x 3491 12-sep-98 3492 0: 12-sep-98 3493 12-09-98 3494 0: 12-09-98 3495 \= Expect no match 3496 sep-12-98 3497 No match 3498 3499 /(?<=(foo))bar\1/ 3500 foobarfoo 3501 0: barfoo 3502 1: foo 3503 foobarfootling 3504 0: barfoo 3505 1: foo 3506 \= Expect no match 3507 foobar 3508 No match 3509 barfoo 3510 No match 3511 3512 /(?i:saturday|sunday)/ 3513 saturday 3514 0: saturday 3515 sunday 3516 0: sunday 3517 Saturday 3518 0: Saturday 3519 Sunday 3520 0: Sunday 3521 SATURDAY 3522 0: SATURDAY 3523 SUNDAY 3524 0: SUNDAY 3525 SunDay 3526 0: SunDay 3527 3528 /(a(?i)bc|BB)x/ 3529 abcx 3530 0: abcx 3531 1: abc 3532 aBCx 3533 0: aBCx 3534 1: aBC 3535 bbx 3536 0: bbx 3537 1: bb 3538 BBx 3539 0: BBx 3540 1: BB 3541 \= Expect no match 3542 abcX 3543 No match 3544 aBCX 3545 No match 3546 bbX 3547 No match 3548 BBX 3549 No match 3550 3551 /^([ab](?i)[cd]|[ef])/ 3552 ac 3553 0: ac 3554 1: ac 3555 aC 3556 0: aC 3557 1: aC 3558 bD 3559 0: bD 3560 1: bD 3561 elephant 3562 0: e 3563 1: e 3564 Europe 3565 0: E 3566 1: E 3567 frog 3568 0: f 3569 1: f 3570 France 3571 0: F 3572 1: F 3573 \= Expect no match 3574 Africa 3575 No match 3576 3577 /^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/ 3578 ab 3579 0: ab 3580 1: ab 3581 aBd 3582 0: aBd 3583 1: aBd 3584 xy 3585 0: xy 3586 1: xy 3587 xY 3588 0: xY 3589 1: xY 3590 zebra 3591 0: z 3592 1: z 3593 Zambesi 3594 0: Z 3595 1: Z 3596 \= Expect no match 3597 aCD 3598 No match 3599 XY 3600 No match 3601 3602 /(?<=foo\n)^bar/m 3603 foo\nbar 3604 0: bar 3605 \= Expect no match 3606 bar 3607 No match 3608 baz\nbar 3609 No match 3610 3611 /(?<=(?<!foo)bar)baz/ 3612 barbaz 3613 0: baz 3614 barbarbaz 3615 0: baz 3616 koobarbaz 3617 0: baz 3618 \= Expect no match 3619 baz 3620 No match 3621 foobarbaz 3622 No match 3623 3624 # The cases of aaaa and aaaaaa are missed out below because Perl does things 3625 # differently. We know that odd, and maybe incorrect, things happen with 3626 # recursive references in Perl, as far as 5.11.3 - see some stuff in test #2. 3627 3628 /^(a\1?){4}$/ 3629 aaaaa 3630 0: aaaaa 3631 1: a 3632 aaaaaaa 3633 0: aaaaaaa 3634 1: a 3635 aaaaaaaaaa 3636 0: aaaaaaaaaa 3637 1: aaaa 3638 \= Expect no match 3639 a 3640 No match 3641 aa 3642 No match 3643 aaa 3644 No match 3645 aaaaaaaa 3646 No match 3647 aaaaaaaaa 3648 No match 3649 aaaaaaaaaaa 3650 No match 3651 aaaaaaaaaaaa 3652 No match 3653 aaaaaaaaaaaaa 3654 No match 3655 aaaaaaaaaaaaaa 3656 No match 3657 aaaaaaaaaaaaaaa 3658 No match 3659 aaaaaaaaaaaaaaaa 3660 No match 3661 3662 /^(a\1?)(a\1?)(a\2?)(a\3?)$/ 3663 aaaa 3664 0: aaaa 3665 1: a 3666 2: a 3667 3: a 3668 4: a 3669 aaaaa 3670 0: aaaaa 3671 1: a 3672 2: aa 3673 3: a 3674 4: a 3675 aaaaaa 3676 0: aaaaaa 3677 1: a 3678 2: aa 3679 3: a 3680 4: aa 3681 aaaaaaa 3682 0: aaaaaaa 3683 1: a 3684 2: aa 3685 3: aaa 3686 4: a 3687 aaaaaaaaaa 3688 0: aaaaaaaaaa 3689 1: a 3690 2: aa 3691 3: aaa 3692 4: aaaa 3693 \= Expect no match 3694 a 3695 No match 3696 aa 3697 No match 3698 aaa 3699 No match 3700 aaaaaaaa 3701 No match 3702 aaaaaaaaa 3703 No match 3704 aaaaaaaaaaa 3705 No match 3706 aaaaaaaaaaaa 3707 No match 3708 aaaaaaaaaaaaa 3709 No match 3710 aaaaaaaaaaaaaa 3711 No match 3712 aaaaaaaaaaaaaaa 3713 No match 3714 aaaaaaaaaaaaaaaa 3715 No match 3716 3717 # The following tests are taken from the Perl 5.005 test suite; some of them 3718 # are compatible with 5.004, but I'd rather not have to sort them out. 3719 3720 /abc/ 3721 abc 3722 0: abc 3723 xabcy 3724 0: abc 3725 ababc 3726 0: abc 3727 \= Expect no match 3728 xbc 3729 No match 3730 axc 3731 No match 3732 abx 3733 No match 3734 3735 /ab*c/ 3736 abc 3737 0: abc 3738 3739 /ab*bc/ 3740 abc 3741 0: abc 3742 abbc 3743 0: abbc 3744 abbbbc 3745 0: abbbbc 3746 3747 /.{1}/ 3748 abbbbc 3749 0: a 3750 3751 /.{3,4}/ 3752 abbbbc 3753 0: abbb 3754 3755 /ab{0,}bc/ 3756 abbbbc 3757 0: abbbbc 3758 3759 /ab+bc/ 3760 abbc 3761 0: abbc 3762 \= Expect no match 3763 abc 3764 No match 3765 abq 3766 No match 3767 3768 /ab{1,}bc/ 3769 3770 /ab+bc/ 3771 abbbbc 3772 0: abbbbc 3773 3774 /ab{1,}bc/ 3775 abbbbc 3776 0: abbbbc 3777 3778 /ab{1,3}bc/ 3779 abbbbc 3780 0: abbbbc 3781 3782 /ab{3,4}bc/ 3783 abbbbc 3784 0: abbbbc 3785 3786 /ab{4,5}bc/ 3787 \= Expect no match 3788 abq 3789 No match 3790 abbbbc 3791 No match 3792 3793 /ab?bc/ 3794 abbc 3795 0: abbc 3796 abc 3797 0: abc 3798 3799 /ab{0,1}bc/ 3800 abc 3801 0: abc 3802 3803 /ab?bc/ 3804 3805 /ab?c/ 3806 abc 3807 0: abc 3808 3809 /ab{0,1}c/ 3810 abc 3811 0: abc 3812 3813 /^abc$/ 3814 abc 3815 0: abc 3816 \= Expect no match 3817 abbbbc 3818 No match 3819 abcc 3820 No match 3821 3822 /^abc/ 3823 abcc 3824 0: abc 3825 3826 /^abc$/ 3827 3828 /abc$/ 3829 aabc 3830 0: abc 3831 \= Expect no match 3832 aabcd 3833 No match 3834 3835 /^/ 3836 abc 3837 0: 3838 3839 /$/ 3840 abc 3841 0: 3842 3843 /a.c/ 3844 abc 3845 0: abc 3846 axc 3847 0: axc 3848 3849 /a.*c/ 3850 axyzc 3851 0: axyzc 3852 3853 /a[bc]d/ 3854 abd 3855 0: abd 3856 \= Expect no match 3857 axyzd 3858 No match 3859 abc 3860 No match 3861 3862 /a[b-d]e/ 3863 ace 3864 0: ace 3865 3866 /a[b-d]/ 3867 aac 3868 0: ac 3869 3870 /a[-b]/ 3871 a- 3872 0: a- 3873 3874 /a[b-]/ 3875 a- 3876 0: a- 3877 3878 /a]/ 3879 a] 3880 0: a] 3881 3882 /a[]]b/ 3883 a]b 3884 0: a]b 3885 3886 /a[^bc]d/ 3887 aed 3888 0: aed 3889 \= Expect no match 3890 abd 3891 No match 3892 abd 3893 No match 3894 3895 /a[^-b]c/ 3896 adc 3897 0: adc 3898 3899 /a[^]b]c/ 3900 adc 3901 0: adc 3902 a-c 3903 0: a-c 3904 \= Expect no match 3905 a]c 3906 No match 3907 3908 /\ba\b/ 3909 a- 3910 0: a 3911 -a 3912 0: a 3913 -a- 3914 0: a 3915 3916 /\by\b/ 3917 \= Expect no match 3918 xy 3919 No match 3920 yz 3921 No match 3922 xyz 3923 No match 3924 3925 /\Ba\B/ 3926 \= Expect no match 3927 a- 3928 No match 3929 -a 3930 No match 3931 -a- 3932 No match 3933 3934 /\By\b/ 3935 xy 3936 0: y 3937 3938 /\by\B/ 3939 yz 3940 0: y 3941 3942 /\By\B/ 3943 xyz 3944 0: y 3945 3946 /\w/ 3947 a 3948 0: a 3949 3950 /\W/ 3951 - 3952 0: - 3953 \= Expect no match 3954 a 3955 No match 3956 3957 /a\sb/ 3958 a b 3959 0: a b 3960 3961 /a\Sb/ 3962 a-b 3963 0: a-b 3964 \= Expect no match 3965 a b 3966 No match 3967 3968 /\d/ 3969 1 3970 0: 1 3971 3972 /\D/ 3973 - 3974 0: - 3975 \= Expect no match 3976 1 3977 No match 3978 3979 /[\w]/ 3980 a 3981 0: a 3982 3983 /[\W]/ 3984 - 3985 0: - 3986 \= Expect no match 3987 a 3988 No match 3989 3990 /a[\s]b/ 3991 a b 3992 0: a b 3993 3994 /a[\S]b/ 3995 a-b 3996 0: a-b 3997 \= Expect no match 3998 a b 3999 No match 4000 4001 /[\d]/ 4002 1 4003 0: 1 4004 4005 /[\D]/ 4006 - 4007 0: - 4008 \= Expect no match 4009 1 4010 No match 4011 4012 /ab|cd/ 4013 abc 4014 0: ab 4015 abcd 4016 0: ab 4017 4018 /()ef/ 4019 def 4020 0: ef 4021 1: 4022 4023 /$b/ 4024 4025 /a\(b/ 4026 a(b 4027 0: a(b 4028 4029 /a\(*b/ 4030 ab 4031 0: ab 4032 a((b 4033 0: a((b 4034 4035 /a\\b/ 4036 a\\b 4037 0: a\b 4038 4039 /((a))/ 4040 abc 4041 0: a 4042 1: a 4043 2: a 4044 4045 /(a)b(c)/ 4046 abc 4047 0: abc 4048 1: a 4049 2: c 4050 4051 /a+b+c/ 4052 aabbabc 4053 0: abc 4054 4055 /a{1,}b{1,}c/ 4056 aabbabc 4057 0: abc 4058 4059 /a.+?c/ 4060 abcabc 4061 0: abc 4062 4063 /(a+|b)*/ 4064 ab 4065 0: ab 4066 1: b 4067 4068 /(a+|b){0,}/ 4069 ab 4070 0: ab 4071 1: b 4072 4073 /(a+|b)+/ 4074 ab 4075 0: ab 4076 1: b 4077 4078 /(a+|b){1,}/ 4079 ab 4080 0: ab 4081 1: b 4082 4083 /(a+|b)?/ 4084 ab 4085 0: a 4086 1: a 4087 4088 /(a+|b){0,1}/ 4089 ab 4090 0: a 4091 1: a 4092 4093 /[^ab]*/ 4094 cde 4095 0: cde 4096 4097 /abc/ 4098 \= Expect no match 4099 b 4100 No match 4101 4102 /a*/ 4103 \ 4104 0: 4105 4106 /([abc])*d/ 4107 abbbcd 4108 0: abbbcd 4109 1: c 4110 4111 /([abc])*bcd/ 4112 abcd 4113 0: abcd 4114 1: a 4115 4116 /a|b|c|d|e/ 4117 e 4118 0: e 4119 4120 /(a|b|c|d|e)f/ 4121 ef 4122 0: ef 4123 1: e 4124 4125 /abcd*efg/ 4126 abcdefg 4127 0: abcdefg 4128 4129 /ab*/ 4130 xabyabbbz 4131 0: ab 4132 xayabbbz 4133 0: a 4134 4135 /(ab|cd)e/ 4136 abcde 4137 0: cde 4138 1: cd 4139 4140 /[abhgefdc]ij/ 4141 hij 4142 0: hij 4143 4144 /^(ab|cd)e/ 4145 4146 /(abc|)ef/ 4147 abcdef 4148 0: ef 4149 1: 4150 4151 /(a|b)c*d/ 4152 abcd 4153 0: bcd 4154 1: b 4155 4156 /(ab|ab*)bc/ 4157 abc 4158 0: abc 4159 1: a 4160 4161 /a([bc]*)c*/ 4162 abc 4163 0: abc 4164 1: bc 4165 4166 /a([bc]*)(c*d)/ 4167 abcd 4168 0: abcd 4169 1: bc 4170 2: d 4171 4172 /a([bc]+)(c*d)/ 4173 abcd 4174 0: abcd 4175 1: bc 4176 2: d 4177 4178 /a([bc]*)(c+d)/ 4179 abcd 4180 0: abcd 4181 1: b 4182 2: cd 4183 4184 /a[bcd]*dcdcde/ 4185 adcdcde 4186 0: adcdcde 4187 4188 /a[bcd]+dcdcde/ 4189 \= Expect no match 4190 abcde 4191 No match 4192 adcdcde 4193 No match 4194 4195 /(ab|a)b*c/ 4196 abc 4197 0: abc 4198 1: ab 4199 4200 /((a)(b)c)(d)/ 4201 abcd 4202 0: abcd 4203 1: abc 4204 2: a 4205 3: b 4206 4: d 4207 4208 /[a-zA-Z_][a-zA-Z0-9_]*/ 4209 alpha 4210 0: alpha 4211 4212 /^a(bc+|b[eh])g|.h$/ 4213 abh 4214 0: bh 4215 4216 /(bc+d$|ef*g.|h?i(j|k))/ 4217 effgz 4218 0: effgz 4219 1: effgz 4220 ij 4221 0: ij 4222 1: ij 4223 2: j 4224 reffgz 4225 0: effgz 4226 1: effgz 4227 \= Expect no match 4228 effg 4229 No match 4230 bcdd 4231 No match 4232 4233 /((((((((((a))))))))))/ 4234 a 4235 0: a 4236 1: a 4237 2: a 4238 3: a 4239 4: a 4240 5: a 4241 6: a 4242 7: a 4243 8: a 4244 9: a 4245 10: a 4246 4247 /((((((((((a))))))))))\10/ 4248 aa 4249 0: aa 4250 1: a 4251 2: a 4252 3: a 4253 4: a 4254 5: a 4255 6: a 4256 7: a 4257 8: a 4258 9: a 4259 10: a 4260 4261 /(((((((((a)))))))))/ 4262 a 4263 0: a 4264 1: a 4265 2: a 4266 3: a 4267 4: a 4268 5: a 4269 6: a 4270 7: a 4271 8: a 4272 9: a 4273 4274 /multiple words of text/ 4275 \= Expect no match 4276 aa 4277 No match 4278 uh-uh 4279 No match 4280 4281 /multiple words/ 4282 multiple words, yeah 4283 0: multiple words 4284 4285 /(.*)c(.*)/ 4286 abcde 4287 0: abcde 4288 1: ab 4289 2: de 4290 4291 /\((.*), (.*)\)/ 4292 (a, b) 4293 0: (a, b) 4294 1: a 4295 2: b 4296 4297 /[k]/ 4298 4299 /abcd/ 4300 abcd 4301 0: abcd 4302 4303 /a(bc)d/ 4304 abcd 4305 0: abcd 4306 1: bc 4307 4308 /a[-]?c/ 4309 ac 4310 0: ac 4311 4312 /(abc)\1/ 4313 abcabc 4314 0: abcabc 4315 1: abc 4316 4317 /([a-c]*)\1/ 4318 abcabc 4319 0: abcabc 4320 1: abc 4321 4322 /(a)|\1/ 4323 a 4324 0: a 4325 1: a 4326 ab 4327 0: a 4328 1: a 4329 \= Expect no match 4330 x 4331 No match 4332 4333 /(([a-c])b*?\2)*/ 4334 ababbbcbc 4335 0: ababb 4336 1: bb 4337 2: b 4338 4339 /(([a-c])b*?\2){3}/ 4340 ababbbcbc 4341 0: ababbbcbc 4342 1: cbc 4343 2: c 4344 4345 /((\3|b)\2(a)x)+/ 4346 aaaxabaxbaaxbbax 4347 0: bbax 4348 1: bbax 4349 2: b 4350 3: a 4351 4352 /((\3|b)\2(a)){2,}/ 4353 bbaababbabaaaaabbaaaabba 4354 0: bbaaaabba 4355 1: bba 4356 2: b 4357 3: a 4358 4359 /abc/i 4360 ABC 4361 0: ABC 4362 XABCY 4363 0: ABC 4364 ABABC 4365 0: ABC 4366 \= Expect no match 4367 aaxabxbaxbbx 4368 No match 4369 XBC 4370 No match 4371 AXC 4372 No match 4373 ABX 4374 No match 4375 4376 /ab*c/i 4377 ABC 4378 0: ABC 4379 4380 /ab*bc/i 4381 ABC 4382 0: ABC 4383 ABBC 4384 0: ABBC 4385 4386 /ab*?bc/i 4387 ABBBBC 4388 0: ABBBBC 4389 4390 /ab{0,}?bc/i 4391 ABBBBC 4392 0: ABBBBC 4393 4394 /ab+?bc/i 4395 ABBC 4396 0: ABBC 4397 4398 /ab+bc/i 4399 \= Expect no match 4400 ABC 4401 No match 4402 ABQ 4403 No match 4404 4405 /ab{1,}bc/i 4406 4407 /ab+bc/i 4408 ABBBBC 4409 0: ABBBBC 4410 4411 /ab{1,}?bc/i 4412 ABBBBC 4413 0: ABBBBC 4414 4415 /ab{1,3}?bc/i 4416 ABBBBC 4417 0: ABBBBC 4418 4419 /ab{3,4}?bc/i 4420 ABBBBC 4421 0: ABBBBC 4422 4423 /ab{4,5}?bc/i 4424 \= Expect no match 4425 ABQ 4426 No match 4427 ABBBBC 4428 No match 4429 4430 /ab??bc/i 4431 ABBC 4432 0: ABBC 4433 ABC 4434 0: ABC 4435 4436 /ab{0,1}?bc/i 4437 ABC 4438 0: ABC 4439 4440 /ab??bc/i 4441 4442 /ab??c/i 4443 ABC 4444 0: ABC 4445 4446 /ab{0,1}?c/i 4447 ABC 4448 0: ABC 4449 4450 /^abc$/i 4451 ABC 4452 0: ABC 4453 \= Expect no match 4454 ABBBBC 4455 No match 4456 ABCC 4457 No match 4458 4459 /^abc/i 4460 ABCC 4461 0: ABC 4462 4463 /^abc$/i 4464 4465 /abc$/i 4466 AABC 4467 0: ABC 4468 4469 /^/i 4470 ABC 4471 0: 4472 4473 /$/i 4474 ABC 4475 0: 4476 4477 /a.c/i 4478 ABC 4479 0: ABC 4480 AXC 4481 0: AXC 4482 4483 /a.*?c/i 4484 AXYZC 4485 0: AXYZC 4486 4487 /a.*c/i 4488 AABC 4489 0: AABC 4490 \= Expect no match 4491 AXYZD 4492 No match 4493 4494 /a[bc]d/i 4495 ABD 4496 0: ABD 4497 4498 /a[b-d]e/i 4499 ACE 4500 0: ACE 4501 \= Expect no match 4502 ABC 4503 No match 4504 ABD 4505 No match 4506 4507 /a[b-d]/i 4508 AAC 4509 0: AC 4510 4511 /a[-b]/i 4512 A- 4513 0: A- 4514 4515 /a[b-]/i 4516 A- 4517 0: A- 4518 4519 /a]/i 4520 A] 4521 0: A] 4522 4523 /a[]]b/i 4524 A]B 4525 0: A]B 4526 4527 /a[^bc]d/i 4528 AED 4529 0: AED 4530 4531 /a[^-b]c/i 4532 ADC 4533 0: ADC 4534 \= Expect no match 4535 ABD 4536 No match 4537 A-C 4538 No match 4539 4540 /a[^]b]c/i 4541 ADC 4542 0: ADC 4543 4544 /ab|cd/i 4545 ABC 4546 0: AB 4547 ABCD 4548 0: AB 4549 4550 /()ef/i 4551 DEF 4552 0: EF 4553 1: 4554 4555 /$b/i 4556 \= Expect no match 4557 A]C 4558 No match 4559 B 4560 No match 4561 4562 /a\(b/i 4563 A(B 4564 0: A(B 4565 4566 /a\(*b/i 4567 AB 4568 0: AB 4569 A((B 4570 0: A((B 4571 4572 /a\\b/i 4573 A\\b 4574 0: A\b 4575 a\\B 4576 0: a\B 4577 4578 /((a))/i 4579 ABC 4580 0: A 4581 1: A 4582 2: A 4583 4584 /(a)b(c)/i 4585 ABC 4586 0: ABC 4587 1: A 4588 2: C 4589 4590 /a+b+c/i 4591 AABBABC 4592 0: ABC 4593 4594 /a{1,}b{1,}c/i 4595 AABBABC 4596 0: ABC 4597 4598 /a.+?c/i 4599 ABCABC 4600 0: ABC 4601 4602 /a.*?c/i 4603 ABCABC 4604 0: ABC 4605 4606 /a.{0,5}?c/i 4607 ABCABC 4608 0: ABC 4609 4610 /(a+|b)*/i 4611 AB 4612 0: AB 4613 1: B 4614 4615 /(a+|b){0,}/i 4616 AB 4617 0: AB 4618 1: B 4619 4620 /(a+|b)+/i 4621 AB 4622 0: AB 4623 1: B 4624 4625 /(a+|b){1,}/i 4626 AB 4627 0: AB 4628 1: B 4629 4630 /(a+|b)?/i 4631 AB 4632 0: A 4633 1: A 4634 4635 /(a+|b){0,1}/i 4636 AB 4637 0: A 4638 1: A 4639 4640 /(a+|b){0,1}?/i 4641 AB 4642 0: 4643 4644 /[^ab]*/i 4645 CDE 4646 0: CDE 4647 4648 /([abc])*d/i 4649 ABBBCD 4650 0: ABBBCD 4651 1: C 4652 4653 /([abc])*bcd/i 4654 ABCD 4655 0: ABCD 4656 1: A 4657 4658 /a|b|c|d|e/i 4659 E 4660 0: E 4661 4662 /(a|b|c|d|e)f/i 4663 EF 4664 0: EF 4665 1: E 4666 4667 /abcd*efg/i 4668 ABCDEFG 4669 0: ABCDEFG 4670 4671 /ab*/i 4672 XABYABBBZ 4673 0: AB 4674 XAYABBBZ 4675 0: A 4676 4677 /(ab|cd)e/i 4678 ABCDE 4679 0: CDE 4680 1: CD 4681 4682 /[abhgefdc]ij/i 4683 HIJ 4684 0: HIJ 4685 4686 /^(ab|cd)e/i 4687 \= Expect no match 4688 ABCDE 4689 No match 4690 4691 /(abc|)ef/i 4692 ABCDEF 4693 0: EF 4694 1: 4695 4696 /(a|b)c*d/i 4697 ABCD 4698 0: BCD 4699 1: B 4700 4701 /(ab|ab*)bc/i 4702 ABC 4703 0: ABC 4704 1: A 4705 4706 /a([bc]*)c*/i 4707 ABC 4708 0: ABC 4709 1: BC 4710 4711 /a([bc]*)(c*d)/i 4712 ABCD 4713 0: ABCD 4714 1: BC 4715 2: D 4716 4717 /a([bc]+)(c*d)/i 4718 ABCD 4719 0: ABCD 4720 1: BC 4721 2: D 4722 4723 /a([bc]*)(c+d)/i 4724 ABCD 4725 0: ABCD 4726 1: B 4727 2: CD 4728 4729 /a[bcd]*dcdcde/i 4730 ADCDCDE 4731 0: ADCDCDE 4732 4733 /a[bcd]+dcdcde/i 4734 4735 /(ab|a)b*c/i 4736 ABC 4737 0: ABC 4738 1: AB 4739 4740 /((a)(b)c)(d)/i 4741 ABCD 4742 0: ABCD 4743 1: ABC 4744 2: A 4745 3: B 4746 4: D 4747 4748 /[a-zA-Z_][a-zA-Z0-9_]*/i 4749 ALPHA 4750 0: ALPHA 4751 4752 /^a(bc+|b[eh])g|.h$/i 4753 ABH 4754 0: BH 4755 4756 /(bc+d$|ef*g.|h?i(j|k))/i 4757 EFFGZ 4758 0: EFFGZ 4759 1: EFFGZ 4760 IJ 4761 0: IJ 4762 1: IJ 4763 2: J 4764 REFFGZ 4765 0: EFFGZ 4766 1: EFFGZ 4767 \= Expect no match 4768 ADCDCDE 4769 No match 4770 EFFG 4771 No match 4772 BCDD 4773 No match 4774 4775 /((((((((((a))))))))))/i 4776 A 4777 0: A 4778 1: A 4779 2: A 4780 3: A 4781 4: A 4782 5: A 4783 6: A 4784 7: A 4785 8: A 4786 9: A 4787 10: A 4788 4789 /((((((((((a))))))))))\10/i 4790 AA 4791 0: AA 4792 1: A 4793 2: A 4794 3: A 4795 4: A 4796 5: A 4797 6: A 4798 7: A 4799 8: A 4800 9: A 4801 10: A 4802 4803 /(((((((((a)))))))))/i 4804 A 4805 0: A 4806 1: A 4807 2: A 4808 3: A 4809 4: A 4810 5: A 4811 6: A 4812 7: A 4813 8: A 4814 9: A 4815 4816 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))/i 4817 A 4818 0: A 4819 1: A 4820 4821 /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/i 4822 C 4823 0: C 4824 1: C 4825 4826 /multiple words of text/i 4827 \= Expect no match 4828 AA 4829 No match 4830 UH-UH 4831 No match 4832 4833 /multiple words/i 4834 MULTIPLE WORDS, YEAH 4835 0: MULTIPLE WORDS 4836 4837 /(.*)c(.*)/i 4838 ABCDE 4839 0: ABCDE 4840 1: AB 4841 2: DE 4842 4843 /\((.*), (.*)\)/i 4844 (A, B) 4845 0: (A, B) 4846 1: A 4847 2: B 4848 4849 /[k]/i 4850 4851 /abcd/i 4852 ABCD 4853 0: ABCD 4854 4855 /a(bc)d/i 4856 ABCD 4857 0: ABCD 4858 1: BC 4859 4860 /a[-]?c/i 4861 AC 4862 0: AC 4863 4864 /(abc)\1/i 4865 ABCABC 4866 0: ABCABC 4867 1: ABC 4868 4869 /([a-c]*)\1/i 4870 ABCABC 4871 0: ABCABC 4872 1: ABC 4873 4874 /a(?!b)./ 4875 abad 4876 0: ad 4877 4878 /a(?=d)./ 4879 abad 4880 0: ad 4881 4882 /a(?=c|d)./ 4883 abad 4884 0: ad 4885 4886 /a(?:b|c|d)(.)/ 4887 ace 4888 0: ace 4889 1: e 4890 4891 /a(?:b|c|d)*(.)/ 4892 ace 4893 0: ace 4894 1: e 4895 4896 /a(?:b|c|d)+?(.)/ 4897 ace 4898 0: ace 4899 1: e 4900 acdbcdbe 4901 0: acd 4902 1: d 4903 4904 /a(?:b|c|d)+(.)/ 4905 acdbcdbe 4906 0: acdbcdbe 4907 1: e 4908 4909 /a(?:b|c|d){2}(.)/ 4910 acdbcdbe 4911 0: acdb 4912 1: b 4913 4914 /a(?:b|c|d){4,5}(.)/ 4915 acdbcdbe 4916 0: acdbcdb 4917 1: b 4918 4919 /a(?:b|c|d){4,5}?(.)/ 4920 acdbcdbe 4921 0: acdbcd 4922 1: d 4923 4924 /((foo)|(bar))*/ 4925 foobar 4926 0: foobar 4927 1: bar 4928 2: foo 4929 3: bar 4930 4931 /a(?:b|c|d){6,7}(.)/ 4932 acdbcdbe 4933 0: acdbcdbe 4934 1: e 4935 4936 /a(?:b|c|d){6,7}?(.)/ 4937 acdbcdbe 4938 0: acdbcdbe 4939 1: e 4940 4941 /a(?:b|c|d){5,6}(.)/ 4942 acdbcdbe 4943 0: acdbcdbe 4944 1: e 4945 4946 /a(?:b|c|d){5,6}?(.)/ 4947 acdbcdbe 4948 0: acdbcdb 4949 1: b 4950 4951 /a(?:b|c|d){5,7}(.)/ 4952 acdbcdbe 4953 0: acdbcdbe 4954 1: e 4955 4956 /a(?:b|c|d){5,7}?(.)/ 4957 acdbcdbe 4958 0: acdbcdb 4959 1: b 4960 4961 /a(?:b|(c|e){1,2}?|d)+?(.)/ 4962 ace 4963 0: ace 4964 1: c 4965 2: e 4966 4967 /^(.+)?B/ 4968 AB 4969 0: AB 4970 1: A 4971 4972 /^([^a-z])|(\^)$/ 4973 . 4974 0: . 4975 1: . 4976 4977 /^[<>]&/ 4978 <&OUT 4979 0: <& 4980 4981 /^(a\1?){4}$/ 4982 aaaaaaaaaa 4983 0: aaaaaaaaaa 4984 1: aaaa 4985 \= Expect no match 4986 AB 4987 No match 4988 aaaaaaaaa 4989 No match 4990 aaaaaaaaaaa 4991 No match 4992 4993 /^(a(?(1)\1)){4}$/ 4994 aaaaaaaaaa 4995 0: aaaaaaaaaa 4996 1: aaaa 4997 \= Expect no match 4998 aaaaaaaaa 4999 No match 5000 aaaaaaaaaaa 5001 No match 5002 5003 /(?:(f)(o)(o)|(b)(a)(r))*/ 5004 foobar 5005 0: foobar 5006 1: f 5007 2: o 5008 3: o 5009 4: b 5010 5: a 5011 6: r 5012 5013 /(?<=a)b/ 5014 ab 5015 0: b 5016 \= Expect no match 5017 cb 5018 No match 5019 b 5020 No match 5021 5022 /(?<!c)b/ 5023 ab 5024 0: b 5025 b 5026 0: b 5027 b 5028 0: b 5029 5030 /(?:..)*a/ 5031 aba 5032 0: aba 5033 5034 /(?:..)*?a/ 5035 aba 5036 0: a 5037 5038 /^(?:b|a(?=(.)))*\1/ 5039 abc 5040 0: ab 5041 1: b 5042 5043 /^(){3,5}/ 5044 abc 5045 0: 5046 1: 5047 5048 /^(a+)*ax/ 5049 aax 5050 0: aax 5051 1: a 5052 5053 /^((a|b)+)*ax/ 5054 aax 5055 0: aax 5056 1: a 5057 2: a 5058 5059 /^((a|bc)+)*ax/ 5060 aax 5061 0: aax 5062 1: a 5063 2: a 5064 5065 /(a|x)*ab/ 5066 cab 5067 0: ab 5068 5069 /(a)*ab/ 5070 cab 5071 0: ab 5072 5073 /(?:(?i)a)b/ 5074 ab 5075 0: ab 5076 5077 /((?i)a)b/ 5078 ab 5079 0: ab 5080 1: a 5081 5082 /(?:(?i)a)b/ 5083 Ab 5084 0: Ab 5085 5086 /((?i)a)b/ 5087 Ab 5088 0: Ab 5089 1: A 5090 5091 /(?:(?i)a)b/ 5092 \= Expect no match 5093 cb 5094 No match 5095 aB 5096 No match 5097 5098 /((?i)a)b/ 5099 5100 /(?i:a)b/ 5101 ab 5102 0: ab 5103 5104 /((?i:a))b/ 5105 ab 5106 0: ab 5107 1: a 5108 5109 /(?i:a)b/ 5110 Ab 5111 0: Ab 5112 5113 /((?i:a))b/ 5114 Ab 5115 0: Ab 5116 1: A 5117 5118 /(?i:a)b/ 5119 \= Expect no match 5120 aB 5121 No match 5122 aB 5123 No match 5124 5125 /((?i:a))b/ 5126 5127 /(?:(?-i)a)b/i 5128 ab 5129 0: ab 5130 5131 /((?-i)a)b/i 5132 ab 5133 0: ab 5134 1: a 5135 5136 /(?:(?-i)a)b/i 5137 aB 5138 0: aB 5139 5140 /((?-i)a)b/i 5141 aB 5142 0: aB 5143 1: a 5144 5145 /(?:(?-i)a)b/i 5146 aB 5147 0: aB 5148 \= Expect no match 5149 Ab 5150 No match 5151 AB 5152 No match 5153 5154 /(?-i:a)b/i 5155 ab 5156 0: ab 5157 5158 /((?-i:a))b/i 5159 ab 5160 0: ab 5161 1: a 5162 5163 /(?-i:a)b/i 5164 aB 5165 0: aB 5166 5167 /((?-i:a))b/i 5168 aB 5169 0: aB 5170 1: a 5171 5172 /(?-i:a)b/i 5173 \= Expect no match 5174 AB 5175 No match 5176 Ab 5177 No match 5178 5179 /((?-i:a))b/i 5180 5181 /(?-i:a)b/i 5182 aB 5183 0: aB 5184 5185 /((?-i:a))b/i 5186 aB 5187 0: aB 5188 1: a 5189 5190 /(?-i:a)b/i 5191 \= Expect no match 5192 Ab 5193 No match 5194 AB 5195 No match 5196 5197 /((?-i:a))b/i 5198 5199 /((?-i:a.))b/i 5200 \= Expect no match 5201 AB 5202 No match 5203 a\nB 5204 No match 5205 5206 /((?s-i:a.))b/i 5207 a\nB 5208 0: a\x0aB 5209 1: a\x0a 5210 5211 /(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))/ 5212 cabbbb 5213 0: cabbbb 5214 5215 /(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/ 5216 caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 5217 0: caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 5218 5219 /(ab)\d\1/i 5220 Ab4ab 5221 0: Ab4ab 5222 1: Ab 5223 ab4Ab 5224 0: ab4Ab 5225 1: ab 5226 5227 /foo\w*\d{4}baz/ 5228 foobar1234baz 5229 0: foobar1234baz 5230 5231 /x(~~)*(?:(?:F)?)?/ 5232 x~~ 5233 0: x~~ 5234 1: ~~ 5235 5236 /^a(?#xxx){3}c/ 5237 aaac 5238 0: aaac 5239 5240 /^a (?#xxx) (?#yyy) {3}c/x 5241 aaac 5242 0: aaac 5243 5244 /(?<![cd])b/ 5245 \= Expect no match 5246 B\nB 5247 No match 5248 dbcb 5249 No match 5250 5251 /(?<![cd])[ab]/ 5252 dbaacb 5253 0: a 5254 5255 /(?<!(c|d))b/ 5256 5257 /(?<!(c|d))[ab]/ 5258 dbaacb 5259 0: a 5260 5261 /(?<!cd)[ab]/ 5262 cdaccb 5263 0: b 5264 5265 /^(?:a?b?)*$/ 5266 \ 5267 0: 5268 a 5269 0: a 5270 ab 5271 0: ab 5272 aaa 5273 0: aaa 5274 \= Expect no match 5275 dbcb 5276 No match 5277 a-- 5278 No match 5279 aa-- 5280 No match 5281 5282 /((?s)^a(.))((?m)^b$)/ 5283 a\nb\nc\n 5284 0: a\x0ab 5285 1: a\x0a 5286 2: \x0a 5287 3: b 5288 5289 /((?m)^b$)/ 5290 a\nb\nc\n 5291 0: b 5292 1: b 5293 5294 /(?m)^b/ 5295 a\nb\n 5296 0: b 5297 5298 /(?m)^(b)/ 5299 a\nb\n 5300 0: b 5301 1: b 5302 5303 /((?m)^b)/ 5304 a\nb\n 5305 0: b 5306 1: b 5307 5308 /\n((?m)^b)/ 5309 a\nb\n 5310 0: \x0ab 5311 1: b 5312 5313 /((?s).)c(?!.)/ 5314 a\nb\nc\n 5315 0: \x0ac 5316 1: \x0a 5317 a\nb\nc\n 5318 0: \x0ac 5319 1: \x0a 5320 5321 /((?s)b.)c(?!.)/ 5322 a\nb\nc\n 5323 0: b\x0ac 5324 1: b\x0a 5325 a\nb\nc\n 5326 0: b\x0ac 5327 1: b\x0a 5328 5329 /^b/ 5330 5331 /()^b/ 5332 \= Expect no match 5333 a\nb\nc\n 5334 No match 5335 a\nb\nc\n 5336 No match 5337 5338 /((?m)^b)/ 5339 a\nb\nc\n 5340 0: b 5341 1: b 5342 5343 /(x)?(?(1)a|b)/ 5344 \= Expect no match 5345 a 5346 No match 5347 a 5348 No match 5349 5350 /(x)?(?(1)b|a)/ 5351 a 5352 0: a 5353 5354 /()?(?(1)b|a)/ 5355 a 5356 0: a 5357 5358 /()(?(1)b|a)/ 5359 5360 /()?(?(1)a|b)/ 5361 a 5362 0: a 5363 1: 5364 5365 /^(\()?blah(?(1)(\)))$/ 5366 (blah) 5367 0: (blah) 5368 1: ( 5369 2: ) 5370 blah 5371 0: blah 5372 \= Expect no match 5373 a 5374 No match 5375 blah) 5376 No match 5377 (blah 5378 No match 5379 5380 /^(\(+)?blah(?(1)(\)))$/ 5381 (blah) 5382 0: (blah) 5383 1: ( 5384 2: ) 5385 blah 5386 0: blah 5387 \= Expect no match 5388 blah) 5389 No match 5390 (blah 5391 No match 5392 5393 /(?(?!a)a|b)/ 5394 5395 /(?(?!a)b|a)/ 5396 a 5397 0: a 5398 5399 /(?(?=a)b|a)/ 5400 \= Expect no match 5401 a 5402 No match 5403 a 5404 No match 5405 5406 /(?(?=a)a|b)/ 5407 a 5408 0: a 5409 5410 /(?=(a+?))(\1ab)/ 5411 aaab 5412 0: aab 5413 1: a 5414 2: aab 5415 5416 /^(?=(a+?))\1ab/ 5417 5418 /(\w+:)+/ 5419 one: 5420 0: one: 5421 1: one: 5422 5423 /$(?<=^(a))/ 5424 a 5425 0: 5426 1: a 5427 5428 /(?=(a+?))(\1ab)/ 5429 aaab 5430 0: aab 5431 1: a 5432 2: aab 5433 5434 /^(?=(a+?))\1ab/ 5435 \= Expect no match 5436 aaab 5437 No match 5438 aaab 5439 No match 5440 5441 /([\w:]+::)?(\w+)$/ 5442 abcd 5443 0: abcd 5444 1: <unset> 5445 2: abcd 5446 xy:z:::abcd 5447 0: xy:z:::abcd 5448 1: xy:z::: 5449 2: abcd 5450 5451 /^[^bcd]*(c+)/ 5452 aexycd 5453 0: aexyc 5454 1: c 5455 5456 /(a*)b+/ 5457 caab 5458 0: aab 5459 1: aa 5460 5461 /([\w:]+::)?(\w+)$/ 5462 abcd 5463 0: abcd 5464 1: <unset> 5465 2: abcd 5466 xy:z:::abcd 5467 0: xy:z:::abcd 5468 1: xy:z::: 5469 2: abcd 5470 \= Expect no match 5471 abcd: 5472 No match 5473 abcd: 5474 No match 5475 5476 /^[^bcd]*(c+)/ 5477 aexycd 5478 0: aexyc 5479 1: c 5480 5481 /(>a+)ab/ 5482 5483 /(?>a+)b/ 5484 aaab 5485 0: aaab 5486 5487 /([[:]+)/ 5488 a:[b]: 5489 0: :[ 5490 1: :[ 5491 5492 /([[=]+)/ 5493 a=[b]= 5494 0: =[ 5495 1: =[ 5496 5497 /([[.]+)/ 5498 a.[b]. 5499 0: .[ 5500 1: .[ 5501 5502 /((?>a+)b)/ 5503 aaab 5504 0: aaab 5505 1: aaab 5506 5507 /(?>(a+))b/ 5508 aaab 5509 0: aaab 5510 1: aaa 5511 5512 /((?>[^()]+)|\([^()]*\))+/ 5513 ((abc(ade)ufh()()x 5514 0: abc(ade)ufh()()x 5515 1: x 5516 5517 /a\Z/ 5518 \= Expect no match 5519 aaab 5520 No match 5521 a\nb\n 5522 No match 5523 5524 /b\Z/ 5525 a\nb\n 5526 0: b 5527 5528 /b\z/ 5529 5530 /b\Z/ 5531 a\nb 5532 0: b 5533 5534 /b\z/ 5535 a\nb 5536 0: b 5537 5538 /^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/ 5539 a 5540 0: a 5541 1: 5542 abc 5543 0: abc 5544 1: 5545 a-b 5546 0: a-b 5547 1: 5548 0-9 5549 0: 0-9 5550 1: 5551 a.b 5552 0: a.b 5553 1: 5554 5.6.7 5555 0: 5.6.7 5556 1: 5557 the.quick.brown.fox 5558 0: the.quick.brown.fox 5559 1: 5560 a100.b200.300c 5561 0: a100.b200.300c 5562 1: 5563 12-ab.1245 5564 0: 12-ab.1245 5565 1: 5566 \= Expect no match 5567 \ 5568 No match 5569 .a 5570 No match 5571 -a 5572 No match 5573 a- 5574 No match 5575 a. 5576 No match 5577 a_b 5578 No match 5579 a.- 5580 No match 5581 a.. 5582 No match 5583 ab..bc 5584 No match 5585 the.quick.brown.fox- 5586 No match 5587 the.quick.brown.fox. 5588 No match 5589 the.quick.brown.fox_ 5590 No match 5591 the.quick.brown.fox+ 5592 No match 5593 5594 /(?>.*)(?<=(abcd|wxyz))/ 5595 alphabetabcd 5596 0: alphabetabcd 5597 1: abcd 5598 endingwxyz 5599 0: endingwxyz 5600 1: wxyz 5601 \= Expect no match 5602 a rather long string that doesn't end with one of them 5603 No match 5604 5605 /word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/ 5606 word cat dog elephant mussel cow horse canary baboon snake shark otherword 5607 0: word cat dog elephant mussel cow horse canary baboon snake shark otherword 5608 \= Expect no match 5609 word cat dog elephant mussel cow horse canary baboon snake shark 5610 No match 5611 5612 /word (?>[a-zA-Z0-9]+ ){0,30}otherword/ 5613 \= Expect no match 5614 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 5615 No match 5616 5617 /(?<=\d{3}(?!999))foo/ 5618 999foo 5619 0: foo 5620 123999foo 5621 0: foo 5622 \= Expect no match 5623 123abcfoo 5624 No match 5625 5626 /(?<=(?!...999)\d{3})foo/ 5627 999foo 5628 0: foo 5629 123999foo 5630 0: foo 5631 \= Expect no match 5632 123abcfoo 5633 No match 5634 5635 /(?<=\d{3}(?!999)...)foo/ 5636 123abcfoo 5637 0: foo 5638 123456foo 5639 0: foo 5640 \= Expect no match 5641 123999foo 5642 No match 5643 5644 /(?<=\d{3}...)(?<!999)foo/ 5645 123abcfoo 5646 0: foo 5647 123456foo 5648 0: foo 5649 \= Expect no match 5650 123999foo 5651 No match 5652 5653 /<a[\s]+href[\s]*=[\s]* # find <a href= 5654 ([\"\'])? # find single or double quote 5655 (?(1) (.*?)\1 | ([^\s]+)) # if quote found, match up to next matching 5656 # quote, otherwise match up to next space 5657 /isx 5658 <a href=abcd xyz 5659 0: <a href=abcd 5660 1: <unset> 5661 2: <unset> 5662 3: abcd 5663 <a href=\"abcd xyz pqr\" cats 5664 0: <a href="abcd xyz pqr" 5665 1: " 5666 2: abcd xyz pqr 5667 <a href=\'abcd xyz pqr\' cats 5668 0: <a href='abcd xyz pqr' 5669 1: ' 5670 2: abcd xyz pqr 5671 5672 /<a\s+href\s*=\s* # find <a href= 5673 (["'])? # find single or double quote 5674 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 5675 # quote, otherwise match up to next space 5676 /isx 5677 <a href=abcd xyz 5678 0: <a href=abcd 5679 1: <unset> 5680 2: <unset> 5681 3: abcd 5682 <a href=\"abcd xyz pqr\" cats 5683 0: <a href="abcd xyz pqr" 5684 1: " 5685 2: abcd xyz pqr 5686 <a href = \'abcd xyz pqr\' cats 5687 0: <a href = 'abcd xyz pqr' 5688 1: ' 5689 2: abcd xyz pqr 5690 5691 /<a\s+href(?>\s*)=(?>\s*) # find <a href= 5692 (["'])? # find single or double quote 5693 (?(1) (.*?)\1 | (\S+)) # if quote found, match up to next matching 5694 # quote, otherwise match up to next space 5695 /isx 5696 <a href=abcd xyz 5697 0: <a href=abcd 5698 1: <unset> 5699 2: <unset> 5700 3: abcd 5701 <a href=\"abcd xyz pqr\" cats 5702 0: <a href="abcd xyz pqr" 5703 1: " 5704 2: abcd xyz pqr 5705 <a href = \'abcd xyz pqr\' cats 5706 0: <a href = 'abcd xyz pqr' 5707 1: ' 5708 2: abcd xyz pqr 5709 5710 /((Z)+|A)*/ 5711 ZABCDEFG 5712 0: ZA 5713 1: A 5714 2: Z 5715 5716 /(Z()|A)*/ 5717 ZABCDEFG 5718 0: ZA 5719 1: A 5720 2: 5721 5722 /(Z(())|A)*/ 5723 ZABCDEFG 5724 0: ZA 5725 1: A 5726 2: 5727 3: 5728 5729 /((?>Z)+|A)*/ 5730 ZABCDEFG 5731 0: ZA 5732 1: A 5733 5734 /((?>)+|A)*/ 5735 ZABCDEFG 5736 0: 5737 1: 5738 5739 /a*/g 5740 abbab 5741 0: a 5742 0: 5743 0: 5744 0: a 5745 0: 5746 0: 5747 5748 /[[:space:]]+/ 5749 > \x09\x0a\x0c\x0d\x0b< 5750 0: \x09\x0a\x0c\x0d\x0b 5751 5752 /[[:blank:]]+/ 5753 > \x09\x0a\x0c\x0d\x0b< 5754 0: \x09 5755 5756 /[\s]+/ 5757 > \x09\x0a\x0c\x0d\x0b< 5758 0: \x09\x0a\x0c\x0d\x0b 5759 5760 /\s+/ 5761 > \x09\x0a\x0c\x0d\x0b< 5762 0: \x09\x0a\x0c\x0d\x0b 5763 5764 /ab/x 5766 ab 5767 0: ab 5768 5769 /(?!\A)x/m 5770 a\nxb\n 5771 0: x 5772 5773 /(?!^)x/m 5774 \= Expect no match 5775 a\nxb\n 5776 No match 5777 5778 /abc\Qabc\Eabc/ 5779 abcabcabc 5780 0: abcabcabc 5781 5782 /abc\Q(*+|\Eabc/ 5783 abc(*+|abc 5784 0: abc(*+|abc 5785 5786 / abc\Q abc\Eabc/x 5787 abc abcabc 5788 0: abc abcabc 5789 \= Expect no match 5790 abcabcabc 5791 No match 5792 5793 /abc#comment 5794 \Q#not comment 5795 literal\E/x 5796 abc#not comment\n literal 5797 0: abc#not comment\x0a literal 5798 5799 /abc#comment 5800 \Q#not comment 5801 literal/x 5802 abc#not comment\n literal 5803 0: abc#not comment\x0a literal 5804 5805 /abc#comment 5806 \Q#not comment 5807 literal\E #more comment 5808 /x 5809 abc#not comment\n literal 5810 0: abc#not comment\x0a literal 5811 5812 /abc#comment 5813 \Q#not comment 5814 literal\E #more comment/x 5815 abc#not comment\n literal 5816 0: abc#not comment\x0a literal 5817 5818 /\Qabc\$xyz\E/ 5819 abc\\\$xyz 5820 0: abc\$xyz 5821 5822 /\Qabc\E\$\Qxyz\E/ 5823 abc\$xyz 5824 0: abc$xyz 5825 5826 /\Gabc/ 5827 abc 5828 0: abc 5829 \= Expect no match 5830 xyzabc 5831 No match 5832 5833 /\Gabc./g 5834 abc1abc2xyzabc3 5835 0: abc1 5836 0: abc2 5837 5838 /abc./g 5839 abc1abc2xyzabc3 5840 0: abc1 5841 0: abc2 5842 0: abc3 5843 5844 /a(?x: b c )d/ 5845 XabcdY 5846 0: abcd 5847 \= Expect no match 5848 Xa b c d Y 5849 No match 5850 5851 /((?x)x y z | a b c)/ 5852 XabcY 5853 0: abc 5854 1: abc 5855 AxyzB 5856 0: xyz 5857 1: xyz 5858 5859 /(?i)AB(?-i)C/ 5860 XabCY 5861 0: abC 5862 \= Expect no match 5863 XabcY 5864 No match 5865 5866 /((?i)AB(?-i)C|D)E/ 5867 abCE 5868 0: abCE 5869 1: abC 5870 DE 5871 0: DE 5872 1: D 5873 \= Expect no match 5874 abcE 5875 No match 5876 abCe 5877 No match 5878 dE 5879 No match 5880 De 5881 No match 5882 5883 /(.*)\d+\1/ 5884 abc123abc 5885 0: abc123abc 5886 1: abc 5887 abc123bc 5888 0: bc123bc 5889 1: bc 5890 5891 /(.*)\d+\1/s 5892 abc123abc 5893 0: abc123abc 5894 1: abc 5895 abc123bc 5896 0: bc123bc 5897 1: bc 5898 5899 /((.*))\d+\1/ 5900 abc123abc 5901 0: abc123abc 5902 1: abc 5903 2: abc 5904 abc123bc 5905 0: bc123bc 5906 1: bc 5907 2: bc 5908 5909 # This tests for an IPv6 address in the form where it can have up to 5910 # eight components, one and only one of which is empty. This must be 5911 # an internal component. 5912 5913 /^(?!:) # colon disallowed at start 5914 (?: # start of item 5915 (?: [0-9a-f]{1,4} | # 1-4 hex digits or 5916 (?(1)0 | () ) ) # if null previously matched, fail; else null 5917 : # followed by colon 5918 ){1,7} # end item; 1-7 of them required 5919 [0-9a-f]{1,4} $ # final hex number at end of string 5920 (?(1)|.) # check that there was an empty component 5921 /ix 5922 a123::a123 5923 0: a123::a123 5924 1: 5925 a123:b342::abcd 5926 0: a123:b342::abcd 5927 1: 5928 a123:b342::324e:abcd 5929 0: a123:b342::324e:abcd 5930 1: 5931 a123:ddde:b342::324e:abcd 5932 0: a123:ddde:b342::324e:abcd 5933 1: 5934 a123:ddde:b342::324e:dcba:abcd 5935 0: a123:ddde:b342::324e:dcba:abcd 5936 1: 5937 a123:ddde:9999:b342::324e:dcba:abcd 5938 0: a123:ddde:9999:b342::324e:dcba:abcd 5939 1: 5940 \= Expect no match 5941 1:2:3:4:5:6:7:8 5942 No match 5943 a123:bce:ddde:9999:b342::324e:dcba:abcd 5944 No match 5945 a123::9999:b342::324e:dcba:abcd 5946 No match 5947 abcde:2:3:4:5:6:7:8 5948 No match 5949 ::1 5950 No match 5951 abcd:fee0:123:: 5952 No match 5953 :1 5954 No match 5955 1: 5956 No match 5957 5958 /[z\Qa-d]\E]/ 5959 z 5960 0: z 5961 a 5962 0: a 5963 - 5964 0: - 5965 d 5966 0: d 5967 ] 5968 0: ] 5969 \= Expect no match 5970 b 5971 No match 5972 5973 /(a+)*b/ 5974 \= Expect no match 5975 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 5976 No match 5977 5978 /(?i)reg(?:ul(?:[a]|ae)r|ex)/ 5979 REGular 5980 0: REGular 5981 regulaer 5982 0: regulaer 5983 Regex 5984 0: Regex 5985 regulr 5986 0: regul\xe4r 5987 5988 /[--]+/ 5989 5990 0: \xc5\xe6\xe5\xe4\xe0 5991 5992 0: \xc5\xe6\xe5\xe4\xff 5993 5994 0: \xc5\xe6\xe5\xe4\xc0 5995 5996 0: \xc5\xe6\xe5\xe4\xdf 5997 5998 /(?<=Z)X./ 5999 \x84XAZXB 6000 0: XB 6001 6002 /ab cd (?x) de fg/ 6003 ab cd defg 6004 0: ab cd defg 6005 6006 /ab cd(?x) de fg/ 6007 ab cddefg 6008 0: ab cddefg 6009 \= Expect no match 6010 abcddefg 6011 No match 6012 6013 /(?<![^f]oo)(bar)/ 6014 foobarX 6015 0: bar 6016 1: bar 6017 \= Expect no match 6018 boobarX 6019 No match 6020 6021 /(?<![^f])X/ 6022 offX 6023 0: X 6024 \= Expect no match 6025 onyX 6026 No match 6027 6028 /(?<=[^f])X/ 6029 onyX 6030 0: X 6031 \= Expect no match 6032 offX 6033 No match 6034 6035 /^/gm 6036 a\nb\nc\n 6037 0: 6038 0: 6039 0: 6040 \ 6041 0: 6042 6043 /(?<=C\n)^/gm 6044 A\nC\nC\n 6045 0: 6046 6047 /(?:(?(1)a|b)(X))+/ 6048 bXaX 6049 0: bXaX 6050 1: X 6051 6052 /(?:(?(1)\1a|b)(X|Y))+/ 6053 bXXaYYaY 6054 0: bXXaYYaY 6055 1: Y 6056 bXYaXXaX 6057 0: bX 6058 1: X 6059 6060 /()()()()()()()()()(?:(?(10)\10a|b)(X|Y))+/ 6061 bXXaYYaY 6062 0: bX 6063 1: 6064 2: 6065 3: 6066 4: 6067 5: 6068 6: 6069 7: 6070 8: 6071 9: 6072 10: X 6073 6074 /[[,abc,]+]/ 6075 abc] 6076 0: abc] 6077 a,b] 6078 0: a,b] 6079 [a,b,c] 6080 0: [a,b,c] 6081 6082 /(?-x: )/x 6083 A\x20B 6084 0: 6085 6086 "(?x)(?-x: \s*#\s*)" 6087 A # B 6088 0: # 6089 \= Expect no match 6090 # 6091 No match 6092 6093 "(?x-is)(?:(?-ixs) \s*#\s*) include" 6094 A #include 6095 0: #include 6096 \= Expect no match 6097 A#include 6098 No match 6099 A #Include 6100 No match 6101 6102 /a*b*\w/ 6103 aaabbbb 6104 0: aaabbbb 6105 aaaa 6106 0: aaaa 6107 a 6108 0: a 6109 6110 /a*b?\w/ 6111 aaabbbb 6112 0: aaabb 6113 aaaa 6114 0: aaaa 6115 a 6116 0: a 6117 6118 /a*b{0,4}\w/ 6119 aaabbbb 6120 0: aaabbbb 6121 aaaa 6122 0: aaaa 6123 a 6124 0: a 6125 6126 /a*b{0,}\w/ 6127 aaabbbb 6128 0: aaabbbb 6129 aaaa 6130 0: aaaa 6131 a 6132 0: a 6133 6134 /a*\d*\w/ 6135 0a 6136 0: 0a 6137 a 6138 0: a 6139 6140 /a*b *\w/x 6141 a 6142 0: a 6143 6144 /a*b#comment 6145 *\w/x 6146 a 6147 0: a 6148 6149 /a* b *\w/x 6150 a 6151 0: a 6152 6153 /^\w+=.*(\\\n.*)*/ 6154 abc=xyz\\\npqr 6155 0: abc=xyz\ 6156 6157 /(?=(\w+))\1:/ 6158 abcd: 6159 0: abcd: 6160 1: abcd 6161 6162 /^(?=(\w+))\1:/ 6163 abcd: 6164 0: abcd: 6165 1: abcd 6166 6167 /^\Eabc/ 6168 abc 6169 0: abc 6170 6171 /^[\Eabc]/ 6172 a 6173 0: a 6174 \= Expect no match 6175 E 6176 No match 6177 6178 /^[a-\Ec]/ 6179 b 6180 0: b 6181 \= Expect no match 6182 - 6183 No match 6184 E 6185 No match 6186 6187 /^[a\E\E-\Ec]/ 6188 b 6189 0: b 6190 \= Expect no match 6191 - 6192 No match 6193 E 6194 No match 6195 6196 /^[\E\Qa\E-\Qz\E]+/ 6197 b 6198 0: b 6199 \= Expect no match 6200 - 6201 No match 6202 6203 /^[a\Q]bc\E]/ 6204 a 6205 0: a 6206 ] 6207 0: ] 6208 c 6209 0: c 6210 6211 /^[a-\Q\E]/ 6212 a 6213 0: a 6214 - 6215 0: - 6216 6217 /^(a()*)*/ 6218 aaaa 6219 0: aaaa 6220 1: a 6221 2: 6222 6223 /^(?:a(?:(?:))*)*/ 6224 aaaa 6225 0: aaaa 6226 6227 /^(a()+)+/ 6228 aaaa 6229 0: aaaa 6230 1: a 6231 2: 6232 6233 /^(?:a(?:(?:))+)+/ 6234 aaaa 6235 0: aaaa 6236 6237 /(a){0,3}(?(1)b|(c|))*D/ 6238 abbD 6239 0: abbD 6240 1: a 6241 ccccD 6242 0: ccccD 6243 1: <unset> 6244 2: 6245 D 6246 0: D 6247 1: <unset> 6248 2: 6249 6250 /(a|)*\d/ 6251 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6252 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6253 1: 6254 \= Expect no match 6255 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6256 No match 6257 6258 /(?>a|)*\d/ 6259 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6260 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6261 \= Expect no match 6262 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6263 No match 6264 6265 /(?:a|)*\d/ 6266 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6267 0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4 6268 \= Expect no match 6269 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6270 No match 6271 6272 /\Z/g 6273 abc\n 6274 0: 6275 0: 6276 6277 /^(?s)(?>.*)(?<!\n)/ 6278 abc 6279 0: abc 6280 \= Expect no match 6281 abc\n 6282 No match 6283 6284 /^(?![^\n]*\n\z)/ 6285 abc 6286 0: 6287 \= Expect no match 6288 abc\n 6289 No match 6290 6291 /\z(?<!\n)/ 6292 abc 6293 0: 6294 \= Expect no match 6295 abc\n 6296 No match 6297 6298 /(.*(.)?)*/ 6299 abcd 6300 0: abcd 6301 1: 6302 6303 /( (A | (?(1)0|) )* )/x 6304 abcd 6305 0: 6306 1: 6307 2: 6308 6309 /( ( (?(1)0|) )* )/x 6310 abcd 6311 0: 6312 1: 6313 2: 6314 6315 /( (?(1)0|)* )/x 6316 abcd 6317 0: 6318 1: 6319 6320 /[[:abcd:xyz]]/ 6321 a] 6322 0: a] 6323 :] 6324 0: :] 6325 6326 /[abc[:x\]pqr]/ 6327 a 6328 0: a 6329 [ 6330 0: [ 6331 : 6332 0: : 6333 ] 6334 0: ] 6335 p 6336 0: p 6337 6338 /.*[op][xyz]/ 6339 \= Expect no match 6340 fooabcfoo 6341 No match 6342 6343 /(?(?=.*b)b|^)/ 6344 adc 6345 0: 6346 abc 6347 0: b 6348 6349 /(?(?=^.*b)b|^)/ 6350 adc 6351 0: 6352 \= Expect no match 6353 abc 6354 No match 6355 6356 /(?(?=.*b)b|^)*/ 6357 adc 6358 0: 6359 abc 6360 0: 6361 6362 /(?(?=.*b)b|^)+/ 6363 adc 6364 0: 6365 abc 6366 0: b 6367 6368 /(?(?=b).*b|^d)/ 6369 abc 6370 0: b 6371 6372 /(?(?=.*b).*b|^d)/ 6373 abc 6374 0: ab 6375 6376 /^%((?(?=[a])[^%])|b)*%$/ 6377 %ab% 6378 0: %ab% 6379 1: 6380 6381 /(?i)a(?-i)b|c/ 6382 XabX 6383 0: ab 6384 XAbX 6385 0: Ab 6386 CcC 6387 0: c 6388 \= Expect no match 6389 XABX 6390 No match 6391 6392 /[\x00-\xff\s]+/ 6393 \x0a\x0b\x0c\x0d 6394 0: \x0a\x0b\x0c\x0d 6395 6396 /(abc)\1/i 6397 \= Expect no match 6398 abc 6399 No match 6400 6401 /(abc)\1/ 6402 \= Expect no match 6403 abc 6404 No match 6405 6406 /[^a]*/i 6407 12abc 6408 0: 12 6409 12ABC 6410 0: 12 6411 6412 /[^a]*+/i 6413 12abc 6414 0: 12 6415 12ABC 6416 0: 12 6417 6418 /[^a]*?X/i 6419 \= Expect no match 6420 12abc 6421 No match 6422 12ABC 6423 No match 6424 6425 /[^a]+?X/i 6426 \= Expect no match 6427 12abc 6428 No match 6429 12ABC 6430 No match 6431 6432 /[^a]?X/i 6433 12aXbcX 6434 0: X 6435 12AXBCX 6436 0: X 6437 BCX 6438 0: CX 6439 6440 /[^a]??X/i 6441 12aXbcX 6442 0: X 6443 12AXBCX 6444 0: X 6445 BCX 6446 0: CX 6447 6448 /[^a]?+X/i 6449 12aXbcX 6450 0: cX 6451 12AXBCX 6452 0: CX 6453 BCX 6454 0: CX 6455 6456 /[^a]{2,3}/i 6457 abcdef 6458 0: bcd 6459 ABCDEF 6460 0: BCD 6461 6462 /[^a]{2,3}?/i 6463 abcdef 6464 0: bc 6465 ABCDEF 6466 0: BC 6467 6468 /[^a]{2,3}+/i 6469 abcdef 6470 0: bcd 6471 ABCDEF 6472 0: BCD 6473 6474 /((a|)+)+Z/ 6475 Z 6476 0: Z 6477 1: 6478 2: 6479 6480 /(a)b|(a)c/ 6481 ac 6482 0: ac 6483 1: <unset> 6484 2: a 6485 6486 /(?>(a))b|(a)c/ 6487 ac 6488 0: ac 6489 1: <unset> 6490 2: a 6491 6492 /(?=(a))ab|(a)c/ 6493 ac 6494 0: ac 6495 1: <unset> 6496 2: a 6497 6498 /((?>(a))b|(a)c)/ 6499 ac 6500 0: ac 6501 1: ac 6502 2: <unset> 6503 3: a 6504 6505 /((?>(a))b|(a)c)++/ 6506 ac 6507 0: ac 6508 1: ac 6509 2: <unset> 6510 3: a 6511 6512 /(?:(?>(a))b|(a)c)++/ 6513 ac 6514 0: ac 6515 1: <unset> 6516 2: a 6517 6518 /(?=(?>(a))b|(a)c)(..)/ 6519 ac 6520 0: ac 6521 1: <unset> 6522 2: a 6523 3: ac 6524 6525 /(?>(?>(a))b|(a)c)/ 6526 ac 6527 0: ac 6528 1: <unset> 6529 2: a 6530 6531 /(?:(?>([ab])))+a=/aftertext 6532 =ba= 6533 0: ba= 6534 0+ 6535 1: b 6536 6537 /(?>([ab]))+a=/aftertext 6538 =ba= 6539 0: ba= 6540 0+ 6541 1: b 6542 6543 /((?>(a+)b)+(aabab))/ 6544 aaaabaaabaabab 6545 0: aaaabaaabaabab 6546 1: aaaabaaabaabab 6547 2: aaa 6548 3: aabab 6549 6550 /(?>a+|ab)+?c/ 6551 \= Expect no match 6552 aabc 6553 No match 6554 6555 /(?>a+|ab)+c/ 6556 \= Expect no match 6557 aabc 6558 No match 6559 6560 /(?:a+|ab)+c/ 6561 aabc 6562 0: aabc 6563 6564 /(?(?=(a))a)/ 6565 a 6566 0: a 6567 1: a 6568 6569 /(?(?=(a))a)(b)/ 6570 ab 6571 0: ab 6572 1: a 6573 2: b 6574 6575 /^(?:a|ab)++c/ 6576 \= Expect no match 6577 aaaabc 6578 No match 6579 6580 /^(?>a|ab)++c/ 6581 \= Expect no match 6582 aaaabc 6583 No match 6584 6585 /^(?:a|ab)+c/ 6586 aaaabc 6587 0: aaaabc 6588 6589 /(?=abc){3}abc/aftertext 6590 abcabcabc 6591 0: abc 6592 0+ abcabc 6593 \= Expect no match 6594 xyz 6595 No match 6596 6597 /(?=abc)+abc/aftertext 6598 abcabcabc 6599 0: abc 6600 0+ abcabc 6601 \= Expect no match 6602 xyz 6603 No match 6604 6605 /(?=abc)++abc/aftertext 6606 abcabcabc 6607 0: abc 6608 0+ abcabc 6609 \= Expect no match 6610 xyz 6611 No match 6612 6613 /(?=abc){0}xyz/ 6614 xyz 6615 0: xyz 6616 6617 /(?=abc){1}xyz/ 6618 \= Expect no match 6619 xyz 6620 No match 6621 6622 /(?=(a))?./ 6623 ab 6624 0: a 6625 1: a 6626 bc 6627 0: b 6628 6629 /(?=(a))??./ 6630 ab 6631 0: a 6632 bc 6633 0: b 6634 6635 /^(?=(?1))?[az]([abc])d/ 6636 abd 6637 0: abd 6638 1: b 6639 zcdxx 6640 0: zcd 6641 1: c 6642 6643 /^(?!a){0}\w+/ 6644 aaaaa 6645 0: aaaaa 6646 6647 /(?<=(abc))?xyz/ 6648 abcxyz 6649 0: xyz 6650 1: abc 6651 pqrxyz 6652 0: xyz 6653 6654 /^[\g<a>]+/ 6655 ggg<<<aaa>>> 6656 0: ggg<<<aaa>>> 6657 \= Expect no match 6658 \\ga 6659 No match 6660 6661 /^[\ga]+/ 6662 gggagagaxyz 6663 0: gggagaga 6664 6665 /^[:a[:digit:]]+/ 6666 aaaa444:::Z 6667 0: aaaa444::: 6668 6669 /^[:a[:digit:]:b]+/ 6670 aaaa444:::bbbZ 6671 0: aaaa444:::bbb 6672 6673 /[:a]xxx[b:]/ 6674 :xxx: 6675 0: :xxx: 6676 6677 /(?<=a{2})b/i 6678 xaabc 6679 0: b 6680 \= Expect no match 6681 xabc 6682 No match 6683 6684 /(?<!a{2})b/i 6685 xabc 6686 0: b 6687 \= Expect no match 6688 xaabc 6689 No match 6690 6691 /(?<=a\h)c/ 6692 xa c 6693 0: c 6694 6695 /(?<=[^a]{2})b/ 6696 axxbc 6697 0: b 6698 aAAbc 6699 0: b 6700 \= Expect no match 6701 xaabc 6702 No match 6703 6704 /(?<=[^a]{2})b/i 6705 axxbc 6706 0: b 6707 \= Expect no match 6708 aAAbc 6709 No match 6710 xaabc 6711 No match 6712 6713 /(?<=a\H)c/ 6714 abc 6715 0: c 6716 6717 /(?<=a\V)c/ 6718 abc 6719 0: c 6720 6721 /(?<=a\v)c/ 6722 a\nc 6723 0: c 6724 6725 /(?(?=c)c|d)++Y/ 6726 XcccddYX 6727 0: cccddY 6728 6729 /(?(?=c)c|d)*+Y/ 6730 XcccddYX 6731 0: cccddY 6732 6733 /^(a{2,3}){2,}+a/ 6734 aaaaaaa 6735 0: aaaaaaa 6736 1: aaa 6737 \= Expect no match 6738 aaaaaa 6739 No match 6740 aaaaaaaaa 6741 No match 6742 6743 /^(a{2,3})++a/ 6744 \= Expect no match 6745 aaaaaa 6746 No match 6747 6748 /^(a{2,3})*+a/ 6749 \= Expect no match 6750 aaaaaa 6751 No match 6752 6753 /\H\h\V\v/ 6754 X X\x0a 6755 0: X X\x0a 6756 X\x09X\x0b 6757 0: X\x09X\x0b 6758 \= Expect no match 6759 \xa0 X\x0a 6760 No match 6761 6762 /\H*\h+\V?\v{3,4}/ 6763 \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a 6764 0: \x09 \xa0X\x0a\x0b\x0c\x0d 6765 \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a 6766 0: \x09 \xa0\x0a\x0b\x0c\x0d 6767 \x09\x20\xa0\x0a\x0b\x0c 6768 0: \x09 \xa0\x0a\x0b\x0c 6769 \= Expect no match 6770 \x09\x20\xa0\x0a\x0b 6771 No match 6772 6773 /\H{3,4}/ 6774 XY ABCDE 6775 0: ABCD 6776 XY PQR ST 6777 0: PQR 6778 6779 /.\h{3,4}./ 6780 XY AB PQRS 6781 0: B P 6782 6783 /\h*X\h?\H+Y\H?Z/ 6784 >XNNNYZ 6785 0: XNNNYZ 6786 > X NYQZ 6787 0: X NYQZ 6788 \= Expect no match 6789 >XYZ 6790 No match 6791 > X NY Z 6792 No match 6793 6794 /\v*X\v?Y\v+Z\V*\x0a\V+\x0b\V{2,3}\x0c/ 6795 >XY\x0aZ\x0aA\x0bNN\x0c 6796 0: XY\x0aZ\x0aA\x0bNN\x0c 6797 >\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c 6798 0: \x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c 6799 6800 /(foo)\Kbar/ 6801 foobar 6802 0: bar 6803 1: foo 6804 6805 /(foo)(\Kbar|baz)/ 6806 foobar 6807 0: bar 6808 1: foo 6809 2: bar 6810 foobaz 6811 0: foobaz 6812 1: foo 6813 2: baz 6814 6815 /(foo\Kbar)baz/ 6816 foobarbaz 6817 0: barbaz 6818 1: foobar 6819 6820 /abc\K|def\K/g,aftertext 6821 Xabcdefghi 6822 0: 6823 0+ defghi 6824 0: 6825 0+ ghi 6826 6827 /ab\Kc|de\Kf/g,aftertext 6828 Xabcdefghi 6829 0: c 6830 0+ defghi 6831 0: f 6832 0+ ghi 6833 6834 /(?=C)/g,aftertext 6835 ABCDECBA 6836 0: 6837 0+ CDECBA 6838 0: 6839 0+ CBA 6840 6841 /^abc\K/aftertext 6842 abcdef 6843 0: 6844 0+ def 6845 \= Expect no match 6846 defabcxyz 6847 No match 6848 6849 /^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-2}Z/ 6850 ababababbbabZXXXX 6851 0: ababababbbabZ 6852 1: ab 6853 2: b 6854 6855 /(?<A>tom|bon)-\g{A}/ 6856 tom-tom 6857 0: tom-tom 6858 1: tom 6859 bon-bon 6860 0: bon-bon 6861 1: bon 6862 6863 /(^(a|b\g{-1}))/ 6864 \= Expect no match 6865 bacxxx 6866 No match 6867 6868 /(?|(abc)|(xyz))\1/ 6869 abcabc 6870 0: abcabc 6871 1: abc 6872 xyzxyz 6873 0: xyzxyz 6874 1: xyz 6875 \= Expect no match 6876 abcxyz 6877 No match 6878 xyzabc 6879 No match 6880 6881 /(?|(abc)|(xyz))(?1)/ 6882 abcabc 6883 0: abcabc 6884 1: abc 6885 xyzabc 6886 0: xyzabc 6887 1: xyz 6888 \= Expect no match 6889 xyzxyz 6890 No match 6891 6892 /^X(?5)(a)(?|(b)|(q))(c)(d)(Y)/ 6893 XYabcdY 6894 0: XYabcdY 6895 1: a 6896 2: b 6897 3: c 6898 4: d 6899 5: Y 6900 6901 /^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)/ 6902 XYabcdY 6903 0: XYabcdY 6904 1: a 6905 2: b 6906 3: <unset> 6907 4: <unset> 6908 5: c 6909 6: d 6910 7: Y 6911 6912 /^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)/ 6913 XYabcdY 6914 0: XYabcdY 6915 1: a 6916 2: b 6917 3: <unset> 6918 4: <unset> 6919 5: c 6920 6: d 6921 7: Y 6922 6923 /(?'abc'\w+):\k<abc>{2}/ 6924 a:aaxyz 6925 0: a:aa 6926 1: a 6927 ab:ababxyz 6928 0: ab:abab 6929 1: ab 6930 \= Expect no match 6931 a:axyz 6932 No match 6933 ab:abxyz 6934 No match 6935 6936 /(?'abc'\w+):\g{abc}{2}/ 6937 a:aaxyz 6938 0: a:aa 6939 1: a 6940 ab:ababxyz 6941 0: ab:abab 6942 1: ab 6943 \= Expect no match 6944 a:axyz 6945 No match 6946 ab:abxyz 6947 No match 6948 6949 /^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x 6950 abd 6951 0: abd 6952 1: a 6953 ce 6954 0: ce 6955 6956 /^(a.)\g-1Z/ 6957 aXaXZ 6958 0: aXaXZ 6959 1: aX 6960 6961 /^(a.)\g{-1}Z/ 6962 aXaXZ 6963 0: aXaXZ 6964 1: aX 6965 6966 /^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) /x 6967 abcd 6968 0: ab 6969 6970 /(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT)) 6971 (?(DEFINE) 6972 (?<NAME_PAT>[a-z]+) 6973 (?<ADDRESS_PAT>\d+) 6974 )/x 6975 metcalfe 33 6976 0: metcalfe 33 6977 1: metcalfe 6978 2: 33 6979 6980 /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/ 6981 1.2.3.4 6982 0: 1.2.3.4 6983 1: <unset> 6984 2: .4 6985 131.111.10.206 6986 0: 131.111.10.206 6987 1: <unset> 6988 2: .206 6989 10.0.0.0 6990 0: 10.0.0.0 6991 1: <unset> 6992 2: .0 6993 \= Expect no match 6994 10.6 6995 No match 6996 455.3.4.5 6997 No match 6998 6999 /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/ 7000 1.2.3.4 7001 0: 1.2.3.4 7002 1: .4 7003 131.111.10.206 7004 0: 131.111.10.206 7005 1: .206 7006 10.0.0.0 7007 0: 10.0.0.0 7008 1: .0 7009 \= Expect no match 7010 10.6 7011 No match 7012 455.3.4.5 7013 No match 7014 7015 /^(\w++|\s++)*$/ 7016 now is the time for all good men to come to the aid of the party 7017 0: now is the time for all good men to come to the aid of the party 7018 1: party 7019 \= Expect no match 7020 this is not a line with only words and spaces! 7021 No match 7022 7023 /(\d++)(\w)/ 7024 12345a 7025 0: 12345a 7026 1: 12345 7027 2: a 7028 \= Expect no match 7029 12345+ 7030 No match 7031 7032 /a++b/ 7033 aaab 7034 0: aaab 7035 7036 /(a++b)/ 7037 aaab 7038 0: aaab 7039 1: aaab 7040 7041 /(a++)b/ 7042 aaab 7043 0: aaab 7044 1: aaa 7045 7046 /([^()]++|\([^()]*\))+/ 7047 ((abc(ade)ufh()()x 7048 0: abc(ade)ufh()()x 7049 1: x 7050 7051 /\(([^()]++|\([^()]+\))+\)/ 7052 (abc) 7053 0: (abc) 7054 1: abc 7055 (abc(def)xyz) 7056 0: (abc(def)xyz) 7057 1: xyz 7058 \= Expect no match 7059 ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 7060 No match 7061 7062 /^([^()]|\((?1)*\))*$/ 7063 abc 7064 0: abc 7065 1: c 7066 a(b)c 7067 0: a(b)c 7068 1: c 7069 a(b(c))d 7070 0: a(b(c))d 7071 1: d 7072 \= Expect no match) 7073 a(b(c)d 7074 No match 7075 7076 /^>abc>([^()]|\((?1)*\))*<xyz<$/ 7077 >abc>123<xyz< 7078 0: >abc>123<xyz< 7079 1: 3 7080 >abc>1(2)3<xyz< 7081 0: >abc>1(2)3<xyz< 7082 1: 3 7083 >abc>(1(2)3)<xyz< 7084 0: >abc>(1(2)3)<xyz< 7085 1: (1(2)3) 7086 7087 /^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i 7088 1221 7089 0: 1221 7090 1: 1221 7091 2: 1 7092 Satanoscillatemymetallicsonatas 7093 0: Satanoscillatemymetallicsonatas 7094 1: <unset> 7095 2: <unset> 7096 3: Satanoscillatemymetallicsonatas 7097 4: S 7098 AmanaplanacanalPanama 7099 0: AmanaplanacanalPanama 7100 1: <unset> 7101 2: <unset> 7102 3: AmanaplanacanalPanama 7103 4: A 7104 AblewasIereIsawElba 7105 0: AblewasIereIsawElba 7106 1: <unset> 7107 2: <unset> 7108 3: AblewasIereIsawElba 7109 4: A 7110 \= Expect no match 7111 Thequickbrownfox 7112 No match 7113 7114 /^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/ 7115 12 7116 0: 12 7117 1: 12 7118 (((2+2)*-3)-7) 7119 0: (((2+2)*-3)-7) 7120 1: (((2+2)*-3)-7) 7121 2: - 7122 -12 7123 0: -12 7124 1: -12 7125 \= Expect no match 7126 ((2+2)*-3)-7) 7127 No match 7128 7129 /^(x(y|(?1){2})z)/ 7130 xyz 7131 0: xyz 7132 1: xyz 7133 2: y 7134 xxyzxyzz 7135 0: xxyzxyzz 7136 1: xxyzxyzz 7137 2: xyzxyz 7138 \= Expect no match 7139 xxyzz 7140 No match 7141 xxyzxyzxyzz 7142 No match 7143 7144 /((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/x 7145 <> 7146 0: <> 7147 1: <> 7148 2: <> 7149 <abcd> 7150 0: <abcd> 7151 1: <abcd> 7152 2: <abcd> 7153 <abc <123> hij> 7154 0: <abc <123> hij> 7155 1: <abc <123> hij> 7156 2: <abc <123> hij> 7157 <abc <def> hij> 7158 0: <def> 7159 1: <def> 7160 2: <def> 7161 <abc<>def> 7162 0: <abc<>def> 7163 1: <abc<>def> 7164 2: <abc<>def> 7165 <abc<> 7166 0: <> 7167 1: <> 7168 2: <> 7169 \= Expect no match 7170 <abc 7171 No match 7172 7173 /^a+(*FAIL)/ 7174 \= Expect no match 7175 aaaaaa 7176 No match 7177 7178 /a+b?c+(*FAIL)/ 7179 \= Expect no match 7180 aaabccc 7181 No match 7182 7183 /a+b?(*PRUNE)c+(*FAIL)/ 7184 \= Expect no match 7185 aaabccc 7186 No match 7187 7188 /a+b?(*COMMIT)c+(*FAIL)/ 7189 \= Expect no match 7190 aaabccc 7191 No match 7192 7193 /a+b?(*SKIP)c+(*FAIL)/ 7194 \= Expect no match 7195 aaabcccaaabccc 7196 No match 7197 7198 /^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 7199 aaaxxxxxx 7200 0: aaaxxxxxx 7201 aaa++++++ 7202 0: aaa 7203 bbbxxxxx 7204 0: bbbxxxxx 7205 bbb+++++ 7206 0: bbb 7207 cccxxxx 7208 0: cccxxxx 7209 ccc++++ 7210 0: ccc 7211 dddddddd 7212 0: ddd 7213 7214 /^(aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/ 7215 aaaxxxxxx 7216 0: aaaxxxxxx 7217 1: aaaxxxxxx 7218 aaa++++++ 7219 0: aaa 7220 1: aaa 7221 bbbxxxxx 7222 0: bbbxxxxx 7223 1: bbbxxxxx 7224 bbb+++++ 7225 0: bbb 7226 1: bbb 7227 cccxxxx 7228 0: cccxxxx 7229 1: cccxxxx 7230 ccc++++ 7231 0: ccc 7232 1: ccc 7233 dddddddd 7234 0: ddd 7235 1: ddd 7236 7237 /a+b?(*THEN)c+(*FAIL)/ 7238 \= Expect no match 7239 aaabccc 7240 No match 7241 7242 /(A (A|B(*ACCEPT)|C) D)(E)/x 7243 AB 7244 0: AB 7245 1: AB 7246 2: B 7247 ABX 7248 0: AB 7249 1: AB 7250 2: B 7251 AADE 7252 0: AADE 7253 1: AAD 7254 2: A 7255 3: E 7256 ACDE 7257 0: ACDE 7258 1: ACD 7259 2: C 7260 3: E 7261 \= Expect no match 7262 AD 7263 No match 7264 7265 /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i 7266 1221 7267 0: 1221 7268 1: 1221 7269 2: 1 7270 Satan, oscillate my metallic sonatas! 7271 0: Satan, oscillate my metallic sonatas! 7272 1: <unset> 7273 2: <unset> 7274 3: Satan, oscillate my metallic sonatas 7275 4: S 7276 A man, a plan, a canal: Panama! 7277 0: A man, a plan, a canal: Panama! 7278 1: <unset> 7279 2: <unset> 7280 3: A man, a plan, a canal: Panama 7281 4: A 7282 Able was I ere I saw Elba. 7283 0: Able was I ere I saw Elba. 7284 1: <unset> 7285 2: <unset> 7286 3: Able was I ere I saw Elba 7287 4: A 7288 \= Expect no match 7289 The quick brown fox 7290 No match 7291 7292 /^((.)(?1)\2|.)$/ 7293 a 7294 0: a 7295 1: a 7296 aba 7297 0: aba 7298 1: aba 7299 2: a 7300 aabaa 7301 0: aabaa 7302 1: aabaa 7303 2: a 7304 abcdcba 7305 0: abcdcba 7306 1: abcdcba 7307 2: a 7308 pqaabaaqp 7309 0: pqaabaaqp 7310 1: pqaabaaqp 7311 2: p 7312 ablewasiereisawelba 7313 0: ablewasiereisawelba 7314 1: ablewasiereisawelba 7315 2: a 7316 \= Expect no match 7317 rhubarb 7318 No match 7319 the quick brown fox 7320 No match 7321 7322 /(a)(?<=b(?1))/ 7323 baz 7324 0: a 7325 1: a 7326 \= Expect no match 7327 caz 7328 No match 7329 7330 /(?<=b(?1))(a)/ 7331 zbaaz 7332 0: a 7333 1: a 7334 \= Expect no match 7335 aaa 7336 No match 7337 7338 /(?<X>a)(?<=b(?&X))/ 7339 baz 7340 0: a 7341 1: a 7342 7343 /^(?|(abc)|(def))\1/ 7344 abcabc 7345 0: abcabc 7346 1: abc 7347 defdef 7348 0: defdef 7349 1: def 7350 \= Expect no match 7351 abcdef 7352 No match 7353 defabc 7354 No match 7355 7356 /^(?|(abc)|(def))(?1)/ 7357 abcabc 7358 0: abcabc 7359 1: abc 7360 defabc 7361 0: defabc 7362 1: def 7363 \= Expect no match 7364 defdef 7365 No match 7366 abcdef 7367 No match 7368 7369 /(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/x,dupnames 7370 a\"aaaaa 7371 0: a"aaaaa 7372 1: " 7373 2: <unset> 7374 3: " 7375 b\"aaaaa 7376 0: b"aaaaa 7377 1: <unset> 7378 2: <unset> 7379 3: <unset> 7380 4: " 7381 5: <unset> 7382 6: " 7383 \= Expect no match 7384 b\"11111 7385 No match 7386 7387 /(?:(?1)|B)(A(*F)|C)/ 7388 ABCD 7389 0: BC 7390 1: C 7391 CCD 7392 0: CC 7393 1: C 7394 \= Expect no match 7395 CAD 7396 No match 7397 7398 /^(?:(?1)|B)(A(*F)|C)/ 7399 CCD 7400 0: CC 7401 1: C 7402 BCD 7403 0: BC 7404 1: C 7405 \= Expect no match 7406 ABCD 7407 No match 7408 CAD 7409 No match 7410 BAD 7411 No match 7412 7413 /(?:(?1)|B)(A(*ACCEPT)XX|C)D/ 7414 AAD 7415 0: AA 7416 1: A 7417 ACD 7418 0: ACD 7419 1: C 7420 BAD 7421 0: BA 7422 1: A 7423 BCD 7424 0: BCD 7425 1: C 7426 BAX 7427 0: BA 7428 1: A 7429 \= Expect no match 7430 ACX 7431 No match 7432 ABC 7433 No match 7434 7435 /(?(DEFINE)(A))B(?1)C/ 7436 BAC 7437 0: BAC 7438 7439 /(?(DEFINE)((A)\2))B(?1)C/ 7440 BAAC 7441 0: BAAC 7442 7443 /(?<pn> \( ( [^()]++ | (?&pn) )* \) )/x 7444 (ab(cd)ef) 7445 0: (ab(cd)ef) 7446 1: (ab(cd)ef) 7447 2: ef 7448 7449 /^(?=a(*SKIP)b|ac)/ 7450 \= Expect no match 7451 ac 7452 No match 7453 7454 /^(?=a(*PRUNE)b)/ 7455 ab 7456 0: 7457 \= Expect no match 7458 ac 7459 No match 7460 7461 /^(?=a(*ACCEPT)b)/ 7462 ac 7463 0: 7464 7465 /(?>a\Kb)/ 7466 ab 7467 0: b 7468 7469 /((?>a\Kb))/ 7470 ab 7471 0: b 7472 1: ab 7473 7474 /(a\Kb)/ 7475 ab 7476 0: b 7477 1: ab 7478 7479 /^a\Kcz|ac/ 7480 ac 7481 0: ac 7482 7483 /(?>a\Kbz|ab)/ 7484 ab 7485 0: ab 7486 7487 /^(?&t)(?(DEFINE)(?<t>a\Kb))$/ 7488 ab 7489 0: b 7490 7491 /^([^()]|\((?1)*\))*$/ 7492 a(b)c 7493 0: a(b)c 7494 1: c 7495 a(b(c)d)e 7496 0: a(b(c)d)e 7497 1: e 7498 7499 /(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))/ 7500 0 7501 0: 0 7502 1: 0 7503 00 7504 0: 00 7505 1: 00 7506 2: 0 7507 0000 7508 0: 0000 7509 1: 0000 7510 2: 0 7511 7512 /(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))/ 7513 0 7514 0: 0 7515 1: 0 7516 2: 0 7517 00 7518 0: 0 7519 1: 0 7520 2: 0 7521 0000 7522 0: 0 7523 1: 0 7524 2: 0 7525 7526 # This one does fail, as expected, in Perl. It needs the complex item at the 7527 # end of the pattern. A single letter instead of (B|D) makes it not fail, which 7528 # I think is a Perl bug. 7529 7530 /A(*COMMIT)(B|D)/ 7531 \= Expect no match 7532 ACABX 7533 No match 7534 7535 # Check the use of names for failure 7536 7537 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark 7538 \= Expect no match 7539 AC 7540 No match, mark = A 7541 CB 7542 No match, mark = B 7543 7544 /(*MARK:A)(*SKIP:B)(C|X)/mark 7545 C 7546 0: C 7547 1: C 7548 MK: A 7549 \= Expect no match 7550 D 7551 No match, mark = A 7552 7553 /^(A(*THEN:A)B|C(*THEN:B)D)/mark 7554 \= Expect no match 7555 CB 7556 No match, mark = B 7557 7558 /^(?:A(*THEN:A)B|C(*THEN:B)D)/mark 7559 \= Expect no match 7560 CB 7561 No match, mark = B 7562 7563 /^(?>A(*THEN:A)B|C(*THEN:B)D)/mark 7564 \= Expect no match 7565 CB 7566 No match, mark = B 7567 7568 # This should succeed, as the skip causes bump to offset 1 (the mark). Note 7569 # that we have to have something complicated such as (B|Z) at the end because, 7570 # for Perl, a simple character somehow causes an unwanted optimization to mess 7571 # with the handling of backtracking verbs. 7572 7573 /A(*MARK:A)A+(*SKIP:A)(B|Z) | AC/x,mark 7574 AAAC 7575 0: AC 7576 7577 # Test skipping over a non-matching mark. 7578 7579 /A(*MARK:A)A+(*MARK:B)(*SKIP:A)(B|Z) | AC/x,mark 7580 AAAC 7581 0: AC 7582 7583 # Check shorthand for MARK. 7584 7585 /A(*:A)A+(*SKIP:A)(B|Z) | AC/x,mark 7586 AAAC 7587 0: AC 7588 7589 /(*:A)A+(*SKIP:A)(B|Z)/mark 7590 \= Expect no match 7591 AAAC 7592 No match, mark = A 7593 7594 # This should succeed, as a non-existent skip name disables the skip. 7595 7596 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark 7597 AAAC 7598 0: AC 7599 7600 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC(*:B)/x,mark 7601 AAAC 7602 0: AC 7603 MK: B 7604 7605 # COMMIT at the start of a pattern should act like an anchor. Again, however, 7606 # we need the complication for Perl. 7607 7608 /(*COMMIT)(A|P)(B|P)(C|P)/ 7609 ABCDEFG 7610 0: ABC 7611 1: A 7612 2: B 7613 3: C 7614 \= Expect no match 7615 DEFGABC 7616 No match 7617 7618 # COMMIT inside an atomic group can't stop backtracking over the group. 7619 7620 /(\w+)(?>b(*COMMIT))\w{2}/ 7621 abbb 7622 0: abbb 7623 1: a 7624 7625 /(\w+)b(*COMMIT)\w{2}/ 7626 \= Expect no match 7627 abbb 7628 No match 7629 7630 # Check opening parens in comment when seeking forward reference. 7631 7632 /(?&t)(?#()(?(DEFINE)(?<t>a))/ 7633 bac 7634 0: a 7635 7636 # COMMIT should override THEN. 7637 7638 /(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/ 7639 \= Expect no match 7640 yes 7641 No match 7642 7643 /(?>(*COMMIT)(yes|no)(*THEN)(*F))?/ 7644 \= Expect no match 7645 yes 7646 No match 7647 7648 /b?(*SKIP)c/ 7649 bc 7650 0: bc 7651 abc 7652 0: bc 7653 7654 /(*SKIP)bc/ 7655 \= Expect no match 7656 a 7657 No match 7658 7659 /(*SKIP)b/ 7660 \= Expect no match 7661 a 7662 No match 7663 7664 /(?P<abn>(?P=abn)xxx|)+/ 7665 xxx 7666 0: 7667 1: 7668 7669 /(?i:([^b]))(?1)/ 7670 aa 7671 0: aa 7672 1: a 7673 aA 7674 0: aA 7675 1: a 7676 \= Expect no match 7677 ab 7678 No match 7679 aB 7680 No match 7681 Ba 7682 No match 7683 ba 7684 No match 7685 7686 /^(?&t)*+(?(DEFINE)(?<t>a))\w$/ 7687 aaaaaaX 7688 0: aaaaaaX 7689 \= Expect no match 7690 aaaaaa 7691 No match 7692 7693 /^(?&t)*(?(DEFINE)(?<t>a))\w$/ 7694 aaaaaaX 7695 0: aaaaaaX 7696 aaaaaa 7697 0: aaaaaa 7698 7699 /^(a)*+(\w)/ 7700 aaaaX 7701 0: aaaaX 7702 1: a 7703 2: X 7704 YZ 7705 0: Y 7706 1: <unset> 7707 2: Y 7708 \= Expect no match 7709 aaaa 7710 No match 7711 7712 /^(?:a)*+(\w)/ 7713 aaaaX 7714 0: aaaaX 7715 1: X 7716 YZ 7717 0: Y 7718 1: Y 7719 \= Expect no match 7720 aaaa 7721 No match 7722 7723 /^(a)++(\w)/ 7724 aaaaX 7725 0: aaaaX 7726 1: a 7727 2: X 7728 \= Expect no match 7729 aaaa 7730 No match 7731 YZ 7732 No match 7733 7734 /^(?:a)++(\w)/ 7735 aaaaX 7736 0: aaaaX 7737 1: X 7738 \= Expect no match 7739 aaaa 7740 No match 7741 YZ 7742 No match 7743 7744 /^(a)?+(\w)/ 7745 aaaaX 7746 0: aa 7747 1: a 7748 2: a 7749 YZ 7750 0: Y 7751 1: <unset> 7752 2: Y 7753 7754 /^(?:a)?+(\w)/ 7755 aaaaX 7756 0: aa 7757 1: a 7758 YZ 7759 0: Y 7760 1: Y 7761 7762 /^(a){2,}+(\w)/ 7763 aaaaX 7764 0: aaaaX 7765 1: a 7766 2: X 7767 \= Expect no match 7768 aaa 7769 No match 7770 YZ 7771 No match 7772 7773 /^(?:a){2,}+(\w)/ 7774 aaaaX 7775 0: aaaaX 7776 1: X 7777 \= Expect no match 7778 aaa 7779 No match 7780 YZ 7781 No match 7782 7783 /(a|)*(?1)b/ 7784 b 7785 0: b 7786 1: 7787 ab 7788 0: ab 7789 1: 7790 aab 7791 0: aab 7792 1: 7793 7794 /(a)++(?1)b/ 7795 \= Expect no match 7796 ab 7797 No match 7798 aab 7799 No match 7800 7801 /(a)*+(?1)b/ 7802 \= Expect no match 7803 ab 7804 No match 7805 aab 7806 No match 7807 7808 /(?1)(?:(b)){0}/ 7809 b 7810 0: b 7811 7812 /(foo ( \( ((?:(?> [^()]+ )|(?2))*) \) ) )/x 7813 foo(bar(baz)+baz(bop)) 7814 0: foo(bar(baz)+baz(bop)) 7815 1: foo(bar(baz)+baz(bop)) 7816 2: (bar(baz)+baz(bop)) 7817 3: bar(baz)+baz(bop) 7818 7819 /(A (A|B(*ACCEPT)|C) D)(E)/x 7820 AB 7821 0: AB 7822 1: AB 7823 2: B 7824 7825 /\A.*?(a|bc)/ 7826 ba 7827 0: ba 7828 1: a 7829 7830 /\A.*?(?:a|bc)++/ 7831 ba 7832 0: ba 7833 7834 /\A.*?(a|bc)++/ 7835 ba 7836 0: ba 7837 1: a 7838 7839 /\A.*?(?:a|bc|d)/ 7840 ba 7841 0: ba 7842 7843 /(?:(b))++/ 7844 beetle 7845 0: b 7846 1: b 7847 7848 /(?(?=(a(*ACCEPT)z))a)/ 7849 a 7850 0: a 7851 1: a 7852 7853 /^(a)(?1)+ab/ 7854 aaaab 7855 0: aaaab 7856 1: a 7857 7858 /^(a)(?1)++ab/ 7859 \= Expect no match 7860 aaaab 7861 No match 7862 7863 /^(?=a(*:M))aZ/mark 7864 aZbc 7865 0: aZ 7866 MK: M 7867 7868 /^(?!(*:M)b)aZ/mark 7869 aZbc 7870 0: aZ 7871 7872 /(?(DEFINE)(a))?b(?1)/ 7873 backgammon 7874 0: ba 7875 7876 /^\N+/ 7877 abc\ndef 7878 0: abc 7879 7880 /^\N{1,}/ 7881 abc\ndef 7882 0: abc 7883 7884 /(?(R)a+|(?R)b)/ 7885 aaaabcde 7886 0: aaaab 7887 7888 /(?(R)a+|((?R))b)/ 7889 aaaabcde 7890 0: aaaab 7891 1: aaaa 7892 7893 /((?(R)a+|(?1)b))/ 7894 aaaabcde 7895 0: aaaab 7896 1: aaaab 7897 7898 /((?(R1)a+|(?1)b))/ 7899 aaaabcde 7900 0: aaaab 7901 1: aaaab 7902 7903 /((?(R)a|(?1)))*/ 7904 aaa 7905 0: aaa 7906 1: a 7907 7908 /((?(R)a|(?1)))+/ 7909 aaa 7910 0: aaa 7911 1: a 7912 7913 /a(*:any 7914 name)/mark 7915 abc 7916 0: a 7917 MK: any \x0aname 7918 7919 /(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))/ 7920 a 7921 0: a 7922 ba 7923 0: a 7924 bba 7925 0: a 7926 7927 # Checking revised (*THEN) handling. 7928 7929 # Capture 7930 7931 /^.*? (a(*THEN)b) c/x 7932 \= Expect no match 7933 aabc 7934 No match 7935 7936 /^.*? (a(*THEN)b|(*F)) c/x 7937 aabc 7938 0: aabc 7939 1: ab 7940 7941 /^.*? ( (a(*THEN)b) | (*F) ) c/x 7942 aabc 7943 0: aabc 7944 1: ab 7945 2: ab 7946 7947 /^.*? ( (a(*THEN)b) ) c/x 7948 \= Expect no match 7949 aabc 7950 No match 7951 7952 # Non-capture 7953 7954 /^.*? (?:a(*THEN)b) c/x 7955 \= Expect no match 7956 aabc 7957 No match 7958 7959 /^.*? (?:a(*THEN)b|(*F)) c/x 7960 aabc 7961 0: aabc 7962 7963 /^.*? (?: (?:a(*THEN)b) | (*F) ) c/x 7964 aabc 7965 0: aabc 7966 7967 /^.*? (?: (?:a(*THEN)b) ) c/x 7968 \= Expect no match 7969 aabc 7970 No match 7971 7972 # Atomic 7973 7974 /^.*? (?>a(*THEN)b) c/x 7975 \= Expect no match 7976 aabc 7977 No match 7978 7979 /^.*? (?>a(*THEN)b|(*F)) c/x 7980 aabc 7981 0: aabc 7982 7983 /^.*? (?> (?>a(*THEN)b) | (*F) ) c/x 7984 aabc 7985 0: aabc 7986 7987 /^.*? (?> (?>a(*THEN)b) ) c/x 7988 \= Expect no match 7989 aabc 7990 No match 7991 7992 # Possessive capture 7993 7994 /^.*? (a(*THEN)b)++ c/x 7995 \= Expect no match 7996 aabc 7997 No match 7998 7999 /^.*? (a(*THEN)b|(*F))++ c/x 8000 aabc 8001 0: aabc 8002 1: ab 8003 8004 /^.*? ( (a(*THEN)b)++ | (*F) )++ c/x 8005 aabc 8006 0: aabc 8007 1: ab 8008 2: ab 8009 8010 /^.*? ( (a(*THEN)b)++ )++ c/x 8011 \= Expect no match 8012 aabc 8013 No match 8014 8015 # Possessive non-capture 8016 8017 /^.*? (?:a(*THEN)b)++ c/x 8018 \= Expect no match 8019 aabc 8020 No match 8021 8022 /^.*? (?:a(*THEN)b|(*F))++ c/x 8023 aabc 8024 0: aabc 8025 8026 /^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c/x 8027 aabc 8028 0: aabc 8029 8030 /^.*? (?: (?:a(*THEN)b)++ )++ c/x 8031 \= Expect no match 8032 aabc 8033 No match 8034 8035 # Condition assertion 8036 8037 /^(?(?=a(*THEN)b)ab|ac)/ 8038 ac 8039 0: ac 8040 8041 # Condition 8042 8043 /^.*?(?(?=a)a|b(*THEN)c)/ 8044 \= Expect no match 8045 ba 8046 No match 8047 8048 /^.*?(?:(?(?=a)a|b(*THEN)c)|d)/ 8049 ba 8050 0: ba 8051 8052 /^.*?(?(?=a)a(*THEN)b|c)/ 8053 \= Expect no match 8054 ac 8055 No match 8056 8057 # Assertion 8058 8059 /^.*(?=a(*THEN)b)/ 8060 aabc 8061 0: a 8062 8063 # -------------------------- 8064 8065 /(?>a(*:m))/imsx,mark 8066 a 8067 0: a 8068 MK: m 8069 8070 /(?>(a)(*:m))/imsx,mark 8071 a 8072 0: a 8073 1: a 8074 MK: m 8075 8076 /(?<=a(*ACCEPT)b)c/ 8077 xacd 8078 0: c 8079 8080 /(?<=(a(*ACCEPT)b))c/ 8081 xacd 8082 0: c 8083 1: a 8084 8085 /(?<=(a(*COMMIT)b))c/ 8086 xabcd 8087 0: c 8088 1: ab 8089 \= Expect no match 8090 xacd 8091 No match 8092 8093 /(?<!a(*FAIL)b)c/ 8094 xcd 8095 0: c 8096 acd 8097 0: c 8098 8099 /(?<=a(*:N)b)c/mark 8100 xabcd 8101 0: c 8102 MK: N 8103 8104 /(?<=a(*PRUNE)b)c/ 8105 xabcd 8106 0: c 8107 8108 /(?<=a(*SKIP)b)c/ 8109 xabcd 8110 0: c 8111 8112 /(?<=a(*THEN)b)c/ 8113 xabcd 8114 0: c 8115 8116 /(a)(?2){2}(.)/ 8117 abcd 8118 0: abcd 8119 1: a 8120 2: d 8121 8122 /(*MARK:A)(*PRUNE:B)(C|X)/mark 8123 C 8124 0: C 8125 1: C 8126 MK: B 8127 \= Expect no match 8128 D 8129 No match, mark = B 8130 8131 /(*MARK:A)(*PRUNE:B)(C|X)/mark 8132 C 8133 0: C 8134 1: C 8135 MK: B 8136 \= Expect no match 8137 D 8138 No match, mark = B 8139 8140 /(*MARK:A)(*THEN:B)(C|X)/mark 8141 C 8142 0: C 8143 1: C 8144 MK: B 8145 \= Expect no match 8146 D 8147 No match, mark = B 8148 8149 /(*MARK:A)(*THEN:B)(C|X)/mark,no_start_optimize 8150 C 8151 0: C 8152 1: C 8153 MK: B 8154 \= Expect no match 8155 D 8156 No match, mark = B 8157 8158 /(*MARK:A)(*THEN:B)(C|X)/mark 8159 C 8160 0: C 8161 1: C 8162 MK: B 8163 \= Expect no match 8164 D 8165 No match, mark = B 8166 8167 # This should fail, as the skip causes a bump to offset 3 (the skip). 8168 8169 /A(*MARK:A)A+(*SKIP)(B|Z) | AC/x,mark 8170 \= Expect no match 8171 AAAC 8172 No match, mark = A 8173 8174 # Same 8175 8176 /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/x,mark 8177 \= Expect no match 8178 AAAC 8179 No match, mark = B 8180 8181 /A(*:A)A+(*SKIP)(B|Z) | AC/x,mark 8182 \= Expect no match 8183 AAAC 8184 No match, mark = A 8185 8186 # This should fail, as a null name is the same as no name. 8187 8188 /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/x,mark 8189 \= Expect no match 8190 AAAC 8191 No match, mark = A 8192 8193 # A check on what happens after hitting a mark and them bumping along to 8194 # something that does not even start. Perl reports tags after the failures 8195 # here, though it does not when the individual letters are made into something 8196 # more complicated. 8197 8198 /A(*:A)B|XX(*:B)Y/mark 8199 AABC 8200 0: AB 8201 MK: A 8202 XXYZ 8203 0: XXY 8204 MK: B 8205 \= Expect no match 8206 XAQQ 8207 No match, mark = A 8208 XAQQXZZ 8209 No match, mark = A 8210 AXQQQ 8211 No match, mark = A 8212 AXXQQQ 8213 No match, mark = B 8214 8215 /^(A(*THEN:A)B|C(*THEN:B)D)/mark 8216 AB 8217 0: AB 8218 1: AB 8219 MK: A 8220 CD 8221 0: CD 8222 1: CD 8223 MK: B 8224 \= Expect no match 8225 AC 8226 No match, mark = A 8227 CB 8228 No match, mark = B 8229 8230 /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark 8231 AB 8232 0: AB 8233 1: AB 8234 MK: A 8235 CD 8236 0: CD 8237 1: CD 8238 MK: B 8239 \= Expect no match 8240 AC 8241 No match, mark = A 8242 CB 8243 No match, mark = B 8244 8245 # An empty name does not pass back an empty string. It is the same as if no 8246 # name were given. 8247 8248 /^(A(*PRUNE:)B|C(*PRUNE:B)D)/mark 8249 AB 8250 0: AB 8251 1: AB 8252 CD 8253 0: CD 8254 1: CD 8255 MK: B 8256 8257 # PRUNE goes to next bumpalong; COMMIT does not. 8258 8259 /A(*PRUNE:A)B/mark 8260 ACAB 8261 0: AB 8262 MK: A 8263 8264 # Mark names can be duplicated. 8265 8266 /A(*:A)B|X(*:A)Y/mark 8267 AABC 8268 0: AB 8269 MK: A 8270 XXYZ 8271 0: XY 8272 MK: A 8273 8274 /b(*:m)f|a(*:n)w/mark 8275 aw 8276 0: aw 8277 MK: n 8278 \= Expect no match 8279 abc 8280 No match, mark = m 8281 8282 /b(*:m)f|aw/mark 8283 abaw 8284 0: aw 8285 \= Expect no match 8286 abc 8287 No match, mark = m 8288 abax 8289 No match, mark = m 8290 8291 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/x,mark 8292 AAAC 8293 0: AAC 8294 8295 /(?=a(*MARK:A)b)..x/mark 8296 abxy 8297 0: abx 8298 MK: A 8299 \= Expect no match 8300 abpq 8301 No match 8302 8303 /(?=a(*MARK:A)b)..(*:Y)x/mark 8304 abxy 8305 0: abx 8306 MK: Y 8307 \= Expect no match 8308 abpq 8309 No match 8310 8311 /(?=a(*PRUNE:A)b)..x/mark 8312 abxy 8313 0: abx 8314 MK: A 8315 \= Expect no match 8316 abpq 8317 No match 8318 8319 /(?=a(*PRUNE:A)b)..(*:Y)x/mark 8320 abxy 8321 0: abx 8322 MK: Y 8323 \= Expect no match 8324 abpq 8325 No match 8326 8327 /(?=a(*THEN:A)b)..x/mark 8328 abxy 8329 0: abx 8330 MK: A 8331 \= Expect no match 8332 abpq 8333 No match 8334 8335 /(?=a(*THEN:A)b)..(*:Y)x/mark 8336 abxy 8337 0: abx 8338 MK: Y 8339 \= Expect no match 8340 abpq 8341 No match 8342 8343 /(another)?(\1?)test/ 8344 hello world test 8345 0: test 8346 1: <unset> 8347 2: 8348 8349 /(another)?(\1+)test/ 8350 \= Expect no match 8351 hello world test 8352 No match 8353 8354 /(a(*COMMIT)b){0}a(?1)|aac/ 8355 aac 8356 0: aac 8357 8358 /((?:a?)*)*c/ 8359 aac 8360 0: aac 8361 1: 8362 8363 /((?>a?)*)*c/ 8364 aac 8365 0: aac 8366 1: 8367 8368 /(?>.*?a)(?<=ba)/ 8369 aba 8370 0: ba 8371 8372 /(?:.*?a)(?<=ba)/ 8373 aba 8374 0: aba 8375 8376 /(?>.*?a)b/s 8377 aab 8378 0: ab 8379 8380 /(?>.*?a)b/ 8381 aab 8382 0: ab 8383 8384 /(?>^a)b/s 8385 \= Expect no match 8386 aab 8387 No match 8388 8389 /(?>.*?)(?<=(abcd)|(wxyz))/ 8390 alphabetabcd 8391 0: 8392 1: abcd 8393 endingwxyz 8394 0: 8395 1: <unset> 8396 2: wxyz 8397 8398 /(?>.*)(?<=(abcd)|(wxyz))/ 8399 alphabetabcd 8400 0: alphabetabcd 8401 1: abcd 8402 endingwxyz 8403 0: endingwxyz 8404 1: <unset> 8405 2: wxyz 8406 8407 "(?>.*)foo" 8408 \= Expect no match 8409 abcdfooxyz 8410 No match 8411 8412 "(?>.*?)foo" 8413 abcdfooxyz 8414 0: foo 8415 8416 /(?:(a(*PRUNE)b)){0}(?:(?1)|ac)/ 8417 ac 8418 0: ac 8419 8420 /(?:(a(*SKIP)b)){0}(?:(?1)|ac)/ 8421 ac 8422 0: ac 8423 8424 /(?<=(*SKIP)ac)a/ 8425 \= Expect no match 8426 aa 8427 No match 8428 8429 /A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark 8430 AAAC 8431 0: AC 8432 8433 /a(*SKIP:m)x|ac(*:n)(*SKIP:n)d|ac/mark 8434 acacd 8435 0: acd 8436 MK: n 8437 8438 /A(*SKIP:m)x|A(*SKIP:n)x|AB/mark 8439 AB 8440 0: AB 8441 8442 /((*SKIP:r)d){0}a(*SKIP:m)x|ac(*:n)|ac/mark 8443 acacd 8444 0: ac 8445 MK: n 8446 8447 # Tests that try to figure out how Perl works. My hypothesis is that the first 8448 # verb that is backtracked onto is the one that acts. This seems to be the case 8449 # almost all the time, but there is one exception that is perhaps a bug. 8450 8451 # This matches "aaaac"; each PRUNE advances one character until the subject no 8452 # longer starts with 5 'a's. 8453 8454 /aaaaa(*PRUNE)b|a+c/ 8455 aaaaaac 8456 0: aaaac 8457 8458 # Putting SKIP in front of PRUNE makes no difference, as it is never 8459 # backtracked onto, whether or not it has a label. 8460 8461 /aaaaa(*SKIP)(*PRUNE)b|a+c/ 8462 aaaaaac 8463 0: aaaac 8464 8465 /aaaaa(*SKIP:N)(*PRUNE)b|a+c/ 8466 aaaaaac 8467 0: aaaac 8468 8469 /aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c/ 8470 aaaaaac 8471 0: aaaac 8472 8473 # Putting THEN in front makes no difference. 8474 8475 /aaaaa(*THEN)(*PRUNE)b|a+c/ 8476 aaaaaac 8477 0: aaaac 8478 8479 # However, putting COMMIT in front of the prune changes it to "no match". I 8480 # think this is inconsistent and possibly a bug. For the moment, running this 8481 # test is moved out of the Perl-compatible file. 8482 8483 /aaaaa(*COMMIT)(*PRUNE)b|a+c/ 8484 8485 # OK, lets play the same game again using SKIP instead of PRUNE. 8486 8487 # This matches "ac" because SKIP forces the next match to start on the 8488 # sixth "a". 8489 8490 /aaaaa(*SKIP)b|a+c/ 8491 aaaaaac 8492 0: ac 8493 8494 # Putting PRUNE in front makes no difference. 8495 8496 /aaaaa(*PRUNE)(*SKIP)b|a+c/ 8497 aaaaaac 8498 0: ac 8499 8500 # Putting THEN in front makes no difference. 8501 8502 /aaaaa(*THEN)(*SKIP)b|a+c/ 8503 aaaaaac 8504 0: ac 8505 8506 # In this case, neither does COMMIT. This still matches "ac". 8507 8508 /aaaaa(*COMMIT)(*SKIP)b|a+c/ 8509 aaaaaac 8510 0: ac 8511 8512 # This gives "no match", as expected. 8513 8514 /aaaaa(*COMMIT)b|a+c/ 8515 \= Expect no match 8516 aaaaaac 8517 No match 8518 8519 # ---- Tests using THEN ---- 8520 8521 # This matches "aaaaaac", as expected. 8522 8523 /aaaaa(*THEN)b|a+c/ 8524 aaaaaac 8525 0: aaaaaac 8526 8527 # Putting SKIP in front makes no difference. 8528 8529 /aaaaa(*SKIP)(*THEN)b|a+c/ 8530 aaaaaac 8531 0: aaaaaac 8532 8533 # Putting PRUNE in front makes no difference. 8534 8535 /aaaaa(*PRUNE)(*THEN)b|a+c/ 8536 aaaaaac 8537 0: aaaaaac 8538 8539 # Putting COMMIT in front makes no difference. 8540 8541 /aaaaa(*COMMIT)(*THEN)b|a+c/ 8542 aaaaaac 8543 0: aaaaaac 8544 8545 # End of "priority" tests 8546 8547 /aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+/ 8548 aaaaaa 8549 0: a 8550 8551 /aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 8552 aaaaaa 8553 0: a 8554 8555 /aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+/ 8556 aaaaaa 8557 0: aaaa 8558 8559 /aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/ 8560 aaaaaa 8561 0: a 8562 8563 /a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c/ 8564 aaaac 8565 0: aac 8566 8567 /a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c/ 8568 aaaac 8569 0: ac 8570 8571 /aaa(*PRUNE:A)a(*SKIP:A)b|a+c/ 8572 aaaac 8573 0: aac 8574 8575 /aaa(*MARK:A)a(*SKIP:A)b|a+c/ 8576 aaaac 8577 0: ac 8578 8579 /a(*:m)a(*COMMIT)(*SKIP:m)b|a+c/mark 8580 aaaaaac 8581 0: ac 8582 8583 /.?(a|b(*THEN)c)/ 8584 ba 8585 0: ba 8586 1: a 8587 8588 /(a(*COMMIT)b)c|abd/ 8589 abc 8590 0: abc 8591 1: ab 8592 \= Expect no match 8593 abd 8594 No match 8595 8596 /(?=a(*COMMIT)b)abc|abd/ 8597 abc 8598 0: abc 8599 abd 8600 0: abd 8601 8602 /(?>a(*COMMIT)b)c|abd/ 8603 abc 8604 0: abc 8605 abd 8606 0: abd 8607 8608 /a(?=b(*COMMIT)c)[^d]|abd/ 8609 abc 8610 0: ab 8611 \= Expect no match 8612 abd 8613 No match 8614 8615 /a(?=bc).|abd/ 8616 abd 8617 0: abd 8618 abc 8619 0: ab 8620 8621 /a(?>b(*COMMIT)c)d|abd/ 8622 \= Expect no match 8623 abceabd 8624 No match 8625 8626 /a(?>bc)d|abd/ 8627 abceabd 8628 0: abd 8629 8630 /(?>a(*COMMIT)b)c|abd/ 8631 abd 8632 0: abd 8633 8634 /(?>a(*COMMIT)c)d|abd/ 8635 \= Expect no match 8636 abd 8637 No match 8638 8639 /((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))/ 8640 ac 8641 0: ac 8642 1: <unset> 8643 2: c 8644 8645 # These tests were formerly in test 2, but changes in PCRE and Perl have 8646 # made them compatible. 8647 8648 /^(a)?(?(1)a|b)+$/ 8649 \= Expect no match 8650 a 8651 No match 8652 8653 /(?=a\Kb)ab/ 8654 ab 8655 0: b 8656 8657 /(?!a\Kb)ac/ 8658 ac 8659 0: ac 8660 8661 /^abc(?<=b\Kc)d/ 8662 abcd 8663 0: cd 8664 8665 /^abc(?<!b\Kq)d/ 8666 abcd 8667 0: abcd 8668 8669 /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/x,mark 8670 \= Expect no match 8671 AAAC 8672 No match, mark = A 8673 8674 /^((abc|abcx)(*THEN)y|abcd)/ 8675 abcd 8676 0: abcd 8677 1: abcd 8678 \= Expect no match 8679 abcxy 8680 No match 8681 8682 /^((yes|no)(*THEN)(*F))?/ 8683 \= Expect no match 8684 yes 8685 No match 8686 8687 /(A (.*) C? (*THEN) | A D) (*FAIL)/x 8688 \= Expect no match 8689 AbcdCBefgBhiBqz 8690 No match 8691 8692 /(A (.*) C? (*THEN) | A D) z/x 8693 \= Expect no match 8694 AbcdCBefgBhiBqz 8695 No match 8696 8697 /(A (.*) C? (*THEN) | A D) \s* (*FAIL)/x 8698 \= Expect no match 8699 AbcdCBefgBhiBqz 8700 No match 8701 8702 /(A (.*) C? (*THEN) | A D) \s* z/x 8703 \= Expect no match 8704 AbcdCBefgBhiBqz 8705 No match 8706 8707 /(A (.*) (?:C|) (*THEN) | A D) (*FAIL)/x 8708 \= Expect no match 8709 AbcdCBefgBhiBqz 8710 No match 8711 8712 /(A (.*) (?:C|) (*THEN) | A D) z/x 8713 \= Expect no match 8714 AbcdCBefgBhiBqz 8715 No match 8716 8717 /(A (.*) C{0,6} (*THEN) | A D) (*FAIL)/x 8718 \= Expect no match 8719 AbcdCBefgBhiBqz 8720 No match 8721 8722 /(A (.*) C{0,6} (*THEN) | A D) z/x 8723 \= Expect no match 8724 AbcdCBefgBhiBqz 8725 No match 8726 8727 /(A (.*) (CE){0,6} (*THEN) | A D) (*FAIL)/x 8728 \= Expect no match 8729 AbcdCEBefgBhiBqz 8730 No match 8731 8732 /(A (.*) (CE){0,6} (*THEN) | A D) z/x 8733 \= Expect no match 8734 AbcdCEBefgBhiBqz 8735 No match 8736 8737 /(A (.*) (CE*){0,6} (*THEN) | A D) (*FAIL)/x 8738 \= Expect no match 8739 AbcdCBefgBhiBqz 8740 No match 8741 8742 /(A (.*) (CE*){0,6} (*THEN) | A D) z/x 8743 \= Expect no match 8744 AbcdCBefgBhiBqz 8745 No match 8746 8747 /(?=a(*COMMIT)b|ac)ac|ac/ 8748 \= Expect no match 8749 ac 8750 No match 8751 8752 /(?=a(*COMMIT)b|(ac)) ac | (a)c/x 8753 \= Expect no match 8754 ac 8755 No match 8756 8757 # ---- 8758 8759 /(?(?!b(*THEN)a)bn|bnn)/ 8760 bnn 8761 0: bn 8762 8763 /(?!b(*SKIP)a)bn|bnn/ 8764 bnn 8765 0: bn 8766 8767 /(?(?!b(*SKIP)a)bn|bnn)/ 8768 bnn 8769 0: bn 8770 8771 /(?!b(*PRUNE)a)bn|bnn/ 8772 bnn 8773 0: bn 8774 8775 /(?(?!b(*PRUNE)a)bn|bnn)/ 8776 bnn 8777 0: bn 8778 8779 /(?!b(*COMMIT)a)bn|bnn/ 8780 bnn 8781 0: bn 8782 8783 /(?(?!b(*COMMIT)a)bn|bnn)/ 8784 bnn 8785 0: bn 8786 8787 /(?=b(*SKIP)a)bn|bnn/ 8788 \= Expect no match 8789 bnn 8790 No match 8791 8792 /(?=b(*THEN)a)bn|bnn/ 8793 bnn 8794 0: bnn 8795 8796 /^(?!a(*SKIP)b)/ 8797 ac 8798 0: 8799 8800 /^(?!a(*SKIP)b)../ 8801 acd 8802 0: ac 8803 8804 /(?!a(*SKIP)b)../ 8805 acd 8806 0: ac 8807 8808 /^(?(?!a(*SKIP)b))/ 8809 ac 8810 0: 8811 8812 /^(?!a(*PRUNE)b)../ 8813 acd 8814 0: ac 8815 8816 /(?!a(*PRUNE)b)../ 8817 acd 8818 0: ac 8819 8820 /(?!a(*COMMIT)b)ac|cd/ 8821 ac 8822 0: ac 8823 8824 /\A.*?(?:a|bc)/ 8825 ba 8826 0: ba 8827 8828 /^(A(*THEN)B|C(*THEN)D)/ 8829 CD 8830 0: CD 8831 1: CD 8832 8833 /(*:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8834 abc 8835 0: b 8836 MK: m(m 8837 8838 /(*PRUNE:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8839 abc 8840 0: b 8841 MK: m(m 8842 8843 /(*SKIP:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8844 abc 8845 0: b 8846 8847 /(*THEN:m(m)(?&y)(?(DEFINE)(?<y>b))/mark 8848 abc 8849 0: b 8850 MK: m(m 8851 8852 /^\d*\w{4}/ 8853 1234 8854 0: 1234 8855 \= Expect no match 8856 123 8857 No match 8858 8859 /^[^b]*\w{4}/ 8860 aaaa 8861 0: aaaa 8862 \= Expect no match 8863 aaa 8864 No match 8865 8866 /^[^b]*\w{4}/i 8867 aaaa 8868 0: aaaa 8869 \= Expect no match 8870 aaa 8871 No match 8872 8873 /^a*\w{4}/ 8874 aaaa 8875 0: aaaa 8876 \= Expect no match 8877 aaa 8878 No match 8879 8880 /^a*\w{4}/i 8881 aaaa 8882 0: aaaa 8883 \= Expect no match 8884 aaa 8885 No match 8886 8887 /(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames 8888 foofoo 8889 0: foofoo 8890 1: foo 8891 barbar 8892 0: barbar 8893 1: <unset> 8894 2: bar 8895 8896 /(?<n>A)(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames 8897 AfooA 8898 0: AfooA 8899 1: A 8900 2: foo 8901 AbarA 8902 0: AbarA 8903 1: A 8904 2: <unset> 8905 3: bar 8906 \= Expect no match 8907 Afoofoo 8908 No match 8909 Abarbar 8910 No match 8911 8912 /^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/ 8913 1 IN SOA non-sp1 non-sp2( 8914 0: 1 IN SOA non-sp1 non-sp2( 8915 1: 1 8916 2: non-sp1 8917 3: non-sp2 8918 8919 /^ (?:(?<A>A)|(?'B'B)(?<A>A)) (?('A')x) (?(<B>)y)$/x,dupnames 8920 Ax 8921 0: Ax 8922 1: A 8923 BAxy 8924 0: BAxy 8925 1: <unset> 8926 2: B 8927 3: A 8928 8929 /^A\xZ/ 8930 A\0Z 8931 0: A\x00Z 8932 8933 /^A\o{123}B/ 8934 A\123B 8935 0: ASB 8936 8937 / ^ a + + b $ /x 8938 aaaab 8939 0: aaaab 8940 8941 / ^ a + #comment 8942 + b $ /x 8943 aaaab 8944 0: aaaab 8945 8946 / ^ a + #comment 8947 #comment 8948 + b $ /x 8949 aaaab 8950 0: aaaab 8951 8952 / ^ (?> a + ) b $ /x 8953 aaaab 8954 0: aaaab 8955 8956 / ^ ( a + ) + + \w $ /x 8957 aaaab 8958 0: aaaab 8959 1: aaaa 8960 8961 /(?:a\Kb)*+/aftertext 8962 ababc 8963 0: b 8964 0+ c 8965 8966 /(?>a\Kb)*/aftertext 8967 ababc 8968 0: b 8969 0+ c 8970 8971 /(?:a\Kb)*/aftertext 8972 ababc 8973 0: b 8974 0+ c 8975 8976 /(a\Kb)*+/aftertext 8977 ababc 8978 0: b 8979 0+ c 8980 1: ab 8981 8982 /(a\Kb)*/aftertext 8983 ababc 8984 0: b 8985 0+ c 8986 1: ab 8987 8988 /(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/ 8989 \= Expect no match 8990 acb 8991 No match 8992 8993 '\A(?:[^\"]++|\"(?:[^\"]*+|\"\")*+\")++' 8994 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 8995 0: NON QUOTED "QUOT""ED" AFTER 8996 8997 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")*+\")++' 8998 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 8999 0: NON QUOTED "QUOT""ED" AFTER 9000 9001 '\A(?:[^\"]++|\"(?:[^\"]++|\"\")++\")++' 9002 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9003 0: NON QUOTED "QUOT""ED" AFTER 9004 9005 '\A([^\"1]++|[\"2]([^\"3]*+|[\"4][\"5])*+[\"6])++' 9006 NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED 9007 0: NON QUOTED "QUOT""ED" AFTER 9008 1: AFTER 9009 2: 9010 9011 /^\w+(?>\s*)(?<=\w)/ 9012 test test 9013 0: tes 9014 9015 /(?P<same>a)(?P<same>b)/g,dupnames 9016 abbaba 9017 0: ab 9018 1: a 9019 2: b 9020 0: ab 9021 1: a 9022 2: b 9023 9024 /(?P<same>a)(?P<same>b)(?P=same)/g,dupnames 9025 abbaba 9026 0: aba 9027 1: a 9028 2: b 9029 9030 /(?P=same)?(?P<same>a)(?P<same>b)/g,dupnames 9031 abbaba 9032 0: ab 9033 1: a 9034 2: b 9035 0: ab 9036 1: a 9037 2: b 9038 9039 /(?:(?P=same)?(?:(?P<same>a)|(?P<same>b))(?P=same))+/g,dupnames 9040 bbbaaabaabb 9041 0: bbbaaaba 9042 1: a 9043 2: b 9044 0: bb 9045 1: <unset> 9046 2: b 9047 9048 /(?:(?P=same)?(?:(?P=same)(?P<same>a)(?P=same)|(?P=same)?(?P<same>b)(?P=same)){2}(?P=same)(?P<same>c)(?P=same)){2}(?P<same>z)?/g,dupnames 9049 \= Expect no match 9050 bbbaaaccccaaabbbcc 9051 No match 9052 9053 /(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/ 9054 acl 9055 0: acl 9056 1: a 9057 bdl 9058 0: bdl 9059 1: <unset> 9060 2: b 9061 adl 9062 0: dl 9063 bcl 9064 0: l 9065 9066 /\sabc/ 9067 \x{0b}abc 9068 0: \x0babc 9069 9070 /[\Qa]\E]+/ 9071 aa]] 9072 0: aa]] 9073 9074 /[\Q]a\E]+/ 9075 aa]] 9076 0: aa]] 9077 9078 /A((((((((a))))))))\8B/ 9079 AaaB 9080 0: AaaB 9081 1: a 9082 2: a 9083 3: a 9084 4: a 9085 5: a 9086 6: a 9087 7: a 9088 8: a 9089 9090 /A(((((((((a)))))))))\9B/ 9091 AaaB 9092 0: AaaB 9093 1: a 9094 2: a 9095 3: a 9096 4: a 9097 5: a 9098 6: a 9099 7: a 9100 8: a 9101 9: a 9102 9103 /A[\8\9]B/ 9104 A8B 9105 0: A8B 9106 A9B 9107 0: A9B 9108 9109 /(|ab)*?d/ 9110 abd 9111 0: abd 9112 1: ab 9113 xyd 9114 0: d 9115 9116 /(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))/ 9117 1234abcd 9118 0: 9119 1: <unset> 9120 2: <unset> 9121 3: <unset> 9122 4: <unset> 9123 5: 9124 9125 /(\2|a)(\1)/ 9126 aaa 9127 0: aa 9128 1: a 9129 2: a 9130 9131 /(\2)(\1)/ 9132 9133 "Z*(|d*){216}" 9134 9135 "(?1)(?#?'){8}(a)" 9136 baaaaaaaaac 9137 0: aaaaaaaaa 9138 1: a 9139 9140 /((((((((((((x))))))))))))\12/ 9141 xx 9142 0: xx 9143 1: x 9144 2: x 9145 3: x 9146 4: x 9147 5: x 9148 6: x 9149 7: x 9150 8: x 9151 9: x 9152 10: x 9153 11: x 9154 12: x 9155 9156 /A[\8]B[\9]C/ 9157 A8B9C 9158 0: A8B9C 9159 9160 /(?1)()((((((\1++))\x85)+)|))/ 9161 \x85\x85 9162 0: \x85\x85 9163 1: 9164 2: \x85\x85 9165 3: \x85\x85 9166 4: \x85\x85 9167 5: \x85 9168 6: 9169 7: 9170 9171 "(?|(\k'Pm')|(?'Pm'))" 9172 abcd 9173 0: 9174 1: 9175 9176 /(?|(aaa)|(b))\g{1}/ 9177 aaaaaa 9178 0: aaaaaa 9179 1: aaa 9180 bb 9181 0: bb 9182 1: b 9183 9184 /(?|(aaa)|(b))(?1)/ 9185 aaaaaa 9186 0: aaaaaa 9187 1: aaa 9188 baaa 9189 0: baaa 9190 1: b 9191 \= Expect no match 9192 bb 9193 No match 9194 9195 /(?|(aaa)|(b))/ 9196 xaaa 9197 0: aaa 9198 1: aaa 9199 xbc 9200 0: b 9201 1: b 9202 9203 /(?|(?'a'aaa)|(?'a'b))\k'a'/ 9204 aaaaaa 9205 0: aaaaaa 9206 1: aaa 9207 bb 9208 0: bb 9209 1: b 9210 9211 /(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/dupnames 9212 aaaccccaaa 9213 0: aaaccccaaa 9214 1: aaa 9215 2: cccc 9216 bccccb 9217 0: bccccb 9218 1: b 9219 2: cccc 9220 9221 # /x does not apply to MARK labels 9222 9223 /x (*MARK:ab cd # comment 9224 ef) x/x,mark 9225 axxz 9226 0: xx 9227 MK: ab cd # comment\x0aef 9228 9229 /(?<=a(B){0}c)X/ 9230 acX 9231 0: X 9232 9233 /(?<DEFINE>b)(?(DEFINE)(a+))(?&DEFINE)/ 9234 bbbb 9235 0: bb 9236 1: b 9237 \= Expect no match 9238 baaab 9239 No match 9240 9241 /(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*[,;:])(?=.{8,16})(?!.*[\s])/ 9242 \ Fred:099 9243 0: 9244 9245 /(?=.*X)X$/ 9246 \ X 9247 0: X 9248 9249 /(?s)(?=.*?)b/ 9250 aabc 9251 0: b 9252 9253 /(Z)(a)\2{1,2}?(?-i)\1X/i 9254 ZaAAZX 9255 0: ZaAAZX 9256 1: Z 9257 2: a 9258 9259 /(?'c')XX(?'YYYYYYYYYYYYYYYYYYYYYYYCl')/ 9260 9261 /[s[:digit:]\E-H]+/ 9262 s09-H 9263 0: s09-H 9264 9265 /[s[:digit:]\Q\E-H]+/ 9266 s09-H 9267 0: s09-H 9268 9269 /a+(?:|b)a/ 9270 aaaa 9271 0: aaaa 9272 9273 /X?(R||){3335}/ 9274 9275 /(?1)(A(*COMMIT)|B)D/ 9276 ABD 9277 0: ABD 9278 1: B 9279 XABD 9280 0: ABD 9281 1: B 9282 BAD 9283 0: BAD 9284 1: A 9285 ABXABD 9286 0: ABD 9287 1: B 9288 \= Expect no match 9289 ABX 9290 No match 9291 9292 /(?(DEFINE)(?<m> 1? (?=(?<cond>2)?) 1 2 (?('cond')|3))) 9293 \A 9294 () 9295 (?&m) 9296 \Z/x 9297 123 9298 0: 123 9299 1: <unset> 9300 2: <unset> 9301 3: 9302 9303 /^(?: 9304 (?: A| (1? (?=(?<cond>2)?) (1) 2 (?('cond')|3)) ) 9305 (Z) 9306 )+$/x 9307 AZ123Z 9308 0: AZ123Z 9309 1: 123 9310 2: <unset> 9311 3: 1 9312 4: Z 9313 \= Expect no match 9314 AZ12Z 9315 No match 9316 9317 /^ (?(DEFINE) ( (?!(a)\2b)..) ) ()(?1) /x 9318 acb 9319 0: ac 9320 1: <unset> 9321 2: <unset> 9322 3: 9323 \= Expect no match 9324 aab 9325 No match 9326 9327 '(?>ab|abab){1,5}?M' 9328 abababababababababababM 9329 0: abababababM 9330 9331 '(?>ab|abab){2}?M' 9332 abababM 9333 0: ababM 9334 9335 '((?(?=(a))a)+k)' 9336 bbak 9337 0: ak 9338 1: ak 9339 2: a 9340 9341 '((?(?=(a))a|)+k)' 9342 bbak 9343 0: ak 9344 1: ak 9345 2: a 9346 9347 '(?(?!(b))a|b)+k' 9348 ababbalbbadabak 9349 0: abak 9350 1: b 9351 9352 /(?!(b))c|b/ 9353 Ab 9354 0: b 9355 Ac 9356 0: c 9357 9358 /(?=(b))b|c/ 9359 Ab 9360 0: b 9361 1: b 9362 Ac 9363 0: c 9364 9365 /^(.|(.)(?1)\2)$/ 9366 a 9367 0: a 9368 1: a 9369 aba 9370 0: aba 9371 1: aba 9372 2: a 9373 abcba 9374 0: abcba 9375 1: abcba 9376 2: a 9377 ababa 9378 0: ababa 9379 1: ababa 9380 2: a 9381 abcdcba 9382 0: abcdcba 9383 1: abcdcba 9384 2: a 9385 9386 /^((.)(?1)\2|.?)$/ 9387 a 9388 0: a 9389 1: a 9390 aba 9391 0: aba 9392 1: aba 9393 2: a 9394 abba 9395 0: abba 9396 1: abba 9397 2: a 9398 abcba 9399 0: abcba 9400 1: abcba 9401 2: a 9402 ababa 9403 0: ababa 9404 1: ababa 9405 2: a 9406 abccba 9407 0: abccba 9408 1: abccba 9409 2: a 9410 abcdcba 9411 0: abcdcba 9412 1: abcdcba 9413 2: a 9414 abcddcba 9415 0: abcddcba 9416 1: abcddcba 9417 2: a 9418 9419 /^(.)(\1|a(?2))/ 9420 bab 9421 0: bab 9422 1: b 9423 2: ab 9424 9425 /^(.|(.)(?1)?\2)$/ 9426 abcba 9427 0: abcba 9428 1: abcba 9429 2: a 9430 9431 /^(?(?=(a))abc|def)/ 9432 abc 9433 0: abc 9434 1: a 9435 9436 /^(?(?!(a))def|abc)/ 9437 abc 9438 0: abc 9439 1: a 9440 9441 /^(?(?=(a)(*ACCEPT))abc|def)/ 9442 abc 9443 0: abc 9444 1: a 9445 9446 /^(?(?!(a)(*ACCEPT))def|abc)/ 9447 abc 9448 0: abc 9449 1: a 9450 9451 /^(?1)\d{3}(a)/ 9452 a123a 9453 0: a123a 9454 1: a 9455 9456 # This pattern uses a lot of named subpatterns in order to match email 9457 # addresses in various formats. It's a heavy test for named subpatterns. In the 9458 # <atext> group, slash is coded as \x{2f} so that this pattern can also be 9459 # processed by perltest.sh, which does not cater for an escaped delimiter 9460 # within the pattern. $ within the pattern must also be escaped. All $ and @ 9461 # characters in subject strings are escaped so that Perl doesn't interpret them 9462 # as variable insertions and " characters must also be escaped for Perl. 9463 9464 # This set of subpatterns is more or less a direct transliteration of the BNF 9465 # definitions in RFC2822, without any of the obsolete features. The addition of 9466 # a possessive + to the definition of <phrase> reduced the match limit in PCRE2 9467 # from over 5 million to just under 400, and eliminated a very noticeable delay 9468 # when this file was passed to perltest.sh. 9469 9470 /(?ix)(?(DEFINE) 9471 (?<addr_spec> (?&local_part) \@ (?&domain) ) 9472 (?<angle_addr> (?&CFWS)?+ < (?&addr_spec) > (?&CFWS)?+ ) 9473 (?<atext> [a-z\d!#\$%&'*+-\x{2f}=?^_`{|}~] ) 9474 (?<atom> (?&CFWS)?+ (?&atext)+ (?&CFWS)?+ ) 9475 (?<ccontent> (?&ctext) | (?"ed_pair) | (?&comment) ) 9476 (?<ctext> [^\x{9}\x{10}\x{13}\x{7f}-\x{ff}\ ()\\] ) 9477 (?<comment> \( (?: (?&FWS)?+ (?&ccontent) )*+ (?&FWS)?+ \) ) 9478 (?<CFWS> (?: (?&FWS)?+ (?&comment) )* (?# NOT possessive) 9479 (?: (?&FWS)?+ (?&comment) | (?&FWS) ) ) 9480 (?<dcontent> (?&dtext) | (?"ed_pair) ) 9481 (?<display_name> (?&phrase) ) 9482 (?<domain> (?&dot_atom) | (?&domain_literal) ) 9483 (?<domain_literal> (?&CFWS)?+ \[ (?: (?&FWS)?+ (?&dcontent) )* (?&FWS)?+ \] 9484 (?&CFWS)?+ ) 9485 (?<dot_atom> (?&CFWS)?+ (?&dot_atom_text) (?&CFWS)?+ ) 9486 (?<dot_atom_text> (?&atext)++ (?: \. (?&atext)++)*+ ) 9487 (?<dtext> [^\x{9}\x{10}\x{13}\x{7f}-\x{ff}\ \[\]\\] ) 9488 (?<FWS> (?: [\t\ ]*+ \n)?+ [\t\ ]++ ) 9489 (?<local_part> (?&dot_atom) | (?"ed_string) ) 9490 (?<mailbox> (?&name_addr) | (?&addr_spec) ) 9491 (?<name_addr> (?&display_name)? (?&angle_addr) ) 9492 (?<phrase> (?&word)++ ) 9493 (?<qcontent> (?&qtext) | (?"ed_pair) ) 9494 (?<quoted_pair> " (?&text) ) 9495 (?<quoted_string> (?&CFWS)?+ " (?: (?&FWS)?+ (?&qcontent))* (?&FWS)?+ " 9496 (?&CFWS)?+ ) 9497 (?<qtext> [^\x{9}\x{10}\x{13}\x{7f}-\x{ff}\ "\\] ) 9498 (?<text> [^\r\n] ) 9499 (?<word> (?&atom) | (?"ed_string) ) 9500 ) # End DEFINE 9501 ^(?&mailbox)$/ 9502 Alan Other <user\@dom.ain> 9503 0: Alan Other <user (a] dom.ain> 9504 <user\@dom.ain> 9505 0: <user (a] dom.ain> 9506 user\@dom.ain 9507 0: user (a] dom.ain 9508 user\@[] 9509 0: user@[] 9510 user\@[domain literal] 9511 0: user@[domain literal] 9512 user\@[domain literal with \"[square brackets\"] inside] 9513 0: user@[domain literal with "[square brackets"] inside] 9514 \"A. Other\" <user.1234\@dom.ain> (a comment) 9515 0: "A. Other" <user.1234 (a] dom.ain> (a comment) 9516 A. Other <user.1234\@dom.ain> (a comment) 9517 0: A. Other <user.1234 (a] dom.ain> (a comment) 9518 \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay 9519 0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay 9520 \= Expect no match 9521 A missing angle <user\@some.where 9522 No match 9523 The quick brown fox 9524 No match 9525 9526 # -------------------------------------------------------------------------- 9527 9528 # This pattern uses named groups to match default PCRE2 patterns. It's another 9529 # heavy test for named subpatterns. Once again, code slash as \x{2f} and escape 9530 # $ even in classes so that this works with pcre2test. 9531 9532 /(?sx)(?(DEFINE) 9533 9534 (?<assertion> (?&simple_assertion) | (?&lookaround) ) 9535 9536 (?<atomic_group> \( \? > (?®ex) \) ) 9537 9538 (?<back_reference> \\ \d+ | 9539 \\g (?: [+-]?\d+ | \{ (?: [+-]?\d+ | (?&groupname) ) \} ) | 9540 \\k <(?&groupname)> | 9541 \\k '(?&groupname)' | 9542 \\k \{ (?&groupname) \} | 9543 \( \? P= (?&groupname) \) ) 9544 9545 (?<branch> (?:(?&assertion) | 9546 (?&callout) | 9547 (?&comment) | 9548 (?&option_setting) | 9549 (?&qualified_item) | 9550 (?"ed_string) | 9551 (?"ed_string_empty) | 9552 (?&special_escape) | 9553 (?&verb) 9554 )* ) 9555 9556 (?<callout> \(\?C (?: \d+ | 9557 (?: (?<D>["'`^%\#\$]) 9558 (?: \k'D'\k'D' | (?!\k'D') . )* \k'D' | 9559 \{ (?: \}\} | [^}]*+ )* \} ) 9560 )? \) ) 9561 9562 (?<capturing_group> \( (?: \? P? < (?&groupname) > | \? ' (?&groupname) ' )? 9563 (?®ex) \) ) 9564 9565 (?<character_class> \[ \^?+ (?: \] (?&class_item)* | (?&class_item)+ ) \] ) 9566 9567 (?<character_type> (?! \\N\{\w+\} ) \\ [dDsSwWhHvVRN] ) 9568 9569 (?<class_item> (?: \[ : (?: 9570 alnum|alpha|ascii|blank|cntrl|digit|graph|lower|print| 9571 punct|space|upper|word|xdigit 9572 ) : \] | 9573 (?"ed_string) | 9574 (?"ed_string_empty) | 9575 (?&escaped_character) | 9576 (?&character_type) | 9577 [^]] ) ) 9578 9579 (?<comment> \(\?\# [^)]* \) | (?"ed_string_empty) | \\E ) 9580 9581 (?<condition> (?: \( [+-]? \d+ \) | 9582 \( < (?&groupname) > \) | 9583 \( ' (?&groupname) ' \) | 9584 \( R \d* \) | 9585 \( R & (?&groupname) \) | 9586 \( (?&groupname) \) | 9587 \( DEFINE \) | 9588 \( VERSION >?=\d+(?:\.\d\d?)? \) | 9589 (?&callout)?+ (?&comment)* (?&lookaround) ) ) 9590 9591 (?<conditional_group> \(\? (?&condition) (?&branch) (?: \| (?&branch) )? \) ) 9592 9593 (?<delimited_regex> (?<delimiter> [-\x{2f}!"'`=_:;,%&@~]) (?®ex) 9594 \k'delimiter' .* ) 9595 9596 (?<escaped_character> \\ (?: 0[0-7]{1,2} | [0-7]{1,3} | o\{ [0-7]+ \} | 9597 x \{ (*COMMIT) [[:xdigit:]]* \} | x [[:xdigit:]]{0,2} | 9598 [aefnrt] | c[[:print:]] | 9599 [^[:alnum:]] ) ) 9600 9601 (?<group> (?&capturing_group) | (?&non_capturing_group) | 9602 (?&resetting_group) | (?&atomic_group) | 9603 (?&conditional_group) ) 9604 9605 (?<groupname> [a-zA-Z_]\w* ) 9606 9607 (?<literal_character> (?! (?&range_qualifier) ) [^[()|*+?.\$\\] ) 9608 9609 (?<lookaround> \(\? (?: = | ! | <= | <! ) (?®ex) \) ) 9610 9611 (?<non_capturing_group> \(\? [iJmnsUx-]* : (?®ex) \) ) 9612 9613 (?<option_setting> \(\? [iJmnsUx-]* \) ) 9614 9615 (?<qualified_item> (?:\. | 9616 (?&lookaround) | 9617 (?&back_reference) | 9618 (?&character_class) | 9619 (?&character_type) | 9620 (?&escaped_character) | 9621 (?&group) | 9622 (?&subroutine_call) | 9623 (?&literal_character) | 9624 (?"ed_string) 9625 ) (?&comment)? (?&qualifier)? ) 9626 9627 (?<qualifier> (?: [?*+] | (?&range_qualifier) ) [+?]? ) 9628 9629 (?<quoted_string> (?: \\Q (?: (?!\\E | \k'delimiter') . )++ (?: \\E | ) ) ) 9630 9631 (?<quoted_string_empty> \\Q\\E ) 9632 9633 (?<range_qualifier> \{ (?: \d+ (?: , \d* )? | , \d+ ) \} ) 9634 9635 (?<regex> (?&start_item)* (?&branch) (?: \| (?&branch) )* ) 9636 9637 (?<resetting_group> \( \? \| (?®ex) \) ) 9638 9639 (?<simple_assertion> \^ | \$ | \\A | \\b | \\B | \\G | \\z | \\Z ) 9640 9641 (?<special_escape> \\K ) 9642 9643 (?<start_item> \( \* (?: 9644 ANY | 9645 ANYCRLF | 9646 BSR_ANYCRLF | 9647 BSR_UNICODE | 9648 CR | 9649 CRLF | 9650 LF | 9651 LIMIT_MATCH=\d+ | 9652 LIMIT_DEPTH=\d+ | 9653 LIMIT_HEAP=\d+ | 9654 NOTEMPTY | 9655 NOTEMPTY_ATSTART | 9656 NO_AUTO_POSSESS | 9657 NO_DOTSTAR_ANCHOR | 9658 NO_JIT | 9659 NO_START_OPT | 9660 NUL | 9661 UTF | 9662 UCP ) \) ) 9663 9664 (?<subroutine_call> (?: \(\?R\) | \(\?[+-]?\d+\) | 9665 \(\? (?: & | P> ) (?&groupname) \) | 9666 \\g < (?&groupname) > | 9667 \\g ' (?&groupname) ' | 9668 \\g < [+-]? \d+ > | 9669 \\g ' [+-]? \d+ ) ) 9670 9671 (?<verb> \(\* (?: ACCEPT | FAIL | F | COMMIT | 9672 (?:MARK)?:(?&verbname) | 9673 (?:PRUNE|SKIP|THEN) (?: : (?&verbname)? )? ) \) ) 9674 9675 (?<verbname> [^)]+ ) 9676 9677 ) # End DEFINE 9678 # Kick it all off... 9679 ^(?&delimited_regex)$/subject_literal,jitstack=256 9680 /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/ 9681 0: /^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/ 9682 /(cat(a(ract|tonic)|erpillar)) \1()2(3)/ 9683 0: /(cat(a(ract|tonic)|erpillar)) \1()2(3)/ 9684 /^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]/ 9685 0: /^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]/ 9686 /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/ 9687 0: /^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/ 9688 /<tr([\w\W\s\d][^<>]{0,})><TD([\w\W\s\d][^<>]{0,})>([\d]{0,}\.)(.*)((<BR>([\w\W\s\d][^<>]{0,})|[\s]{0,}))<\/a><\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><\/TR>/is 9689 0: /<tr([\w\W\s\d][^<>]{0,})><TD([\w\W\s\d][^<>]{0,})>([\d]{0,}\.)(.*)((<BR>([\w\W\s\d][^<>]{0,})|[\s]{0,}))<\/a><\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><\/TR>/is 9690 /^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) / 9691 0: /^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) / 9692 /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/ 9693 0: /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/ 9694 /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/ 9695 0: /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/ 9696 /^(\w++|\s++)*$/ 9697 0: /^(\w++|\s++)*$/ 9698 /a+b?(*THEN)c+(*FAIL)/ 9699 0: /a+b?(*THEN)c+(*FAIL)/ 9700 /(A (A|B(*ACCEPT)|C) D)(E)/x 9701 0: /(A (A|B(*ACCEPT)|C) D)(E)/x 9702 /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i 9703 0: /^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i 9704 /A(*PRUNE)B(*SKIP)C(*THEN)D(*COMMIT)E(*F)F(*FAIL)G(?!)H(*ACCEPT)I/B 9705 0: /A(*PRUNE)B(*SKIP)C(*THEN)D(*COMMIT)E(*F)F(*FAIL)G(?!)H(*ACCEPT)I/B 9706 /(?C`a``b`)(?C'a''b')(?C"a""b")(?C^a^^b^)(?C%a%%b%)(?C#a##b#)(?C$a$$b$)(?C{a}}b})/B,callout_info 9707 0: /(?C`a``b`)(?C'a''b')(?C"a""b")(?C^a^^b^)(?C%a%%b%)(?C#a##b#)(?C$a$$b$)(?C{a}}b})/B,callout_info 9708 /(?sx)(?(DEFINE)(?<assertion> (?&simple_assertion) | (?&lookaround) )(?<atomic_group> \( \? > (?®ex) \) )(?<back_reference> \\ \d+ | \\g (?: [+-]?\d+ | \{ (?: [+-]?\d+ | (?&groupname) ) \} ) | \\k <(?&groupname)> | \\k '(?&groupname)' | \\k \{ (?&groupname) \} | \( \? P= (?&groupname) \) )(?<branch> (?:(?&assertion) | (?&callout) | (?&comment) | (?&option_setting) | (?&qualified_item) | (?"ed_string) | (?"ed_string_empty) | (?&special_escape) | (?&verb) )* )(?<callout> \(\?C (?: \d+ | (?: (?<D>["'`^%\#\$]) (?: \k'D'\k'D' | (?!\k'D') . )* \k'D' | \{ (?: \}\} | [^}]*+ )* \} ) )? \) )(?<capturing_group> \( (?: \? P? < (?&groupname) > | \? ' (?&groupname) ' )? (?®ex) \) )(?<character_class> \[ \^?+ (?: \] (?&class_item)* | (?&class_item)+ ) \] )(?<character_type> (?! \\N\{\w+\} ) \\ [dDsSwWhHvVRN] )(?<class_item> (?: \[ : (?: alnum|alpha|ascii|blank|cntrl|digit|graph|lower|print| punct|space|upper|word|xdigit ) : \] | (?"ed_string) | (?"ed_string_empty) | (?&escaped_character) | (?&character_type) | [^]] ) )(?<comment> \(\?\# [^)]* \) | (?"ed_string_empty) | \\E )(?<condition> (?: \( [+-]? \d+ \) | \( < (?&groupname) > \) | \( ' (?&groupname) ' \) | \( R \d* \) | \( R & (?&groupname) \) | \( (?&groupname) \) | \( DEFINE \) | \( VERSION >?=\d+(?:\.\d\d?)? \) | (?&callout)?+ (?&comment)* (?&lookaround) ) )(?<conditional_group> \(\? (?&condition) (?&branch) (?: \| (?&branch) )? \) )(?<delimited_regex> (?<delimiter> [-\x{2f}!"'`=_:;,%&@~]) (?®ex) \k'delimiter' .* )(?<escaped_character> \\ (?: 0[0-7]{1,2} | [0-7]{1,3} | o\{ [0-7]+ \} | x \{ (*COMMIT) [[:xdigit:]]* \} | x [[:xdigit:]]{0,2} | [aefnrt] | c[[:print:]] | [^[:alnum:]] ) )(?<group> (?&capturing_group) | (?&non_capturing_group) | (?&resetting_group) | (?&atomic_group) | (?&conditional_group) )(?<groupname> [a-zA-Z_]\w* )(?<literal_character> (?! (?&range_qualifier) ) [^[()|*+?.\$\\] )(?<lookaround> \(\? (?: = | ! | <= | <! ) (?®ex) \) )(?<non_capturing_group> \(\? [iJmnsUx-]* : (?®ex) \) )(?<option_setting> \(\? [iJmnsUx-]* \) )(?<qualified_item> (?:\. | (?&lookaround) | (?&back_reference) | (?&character_class) | (?&character_type) | (?&escaped_character) | (?&group) | (?&subroutine_call) | (?&literal_character) | (?"ed_string) ) (?&comment)? (?&qualifier)? )(?<qualifier> (?: [?*+] | (?&range_qualifier) ) [+?]? )(?<quoted_string> (?: \\Q (?: (?!\\E | \k'delimiter') . )++ (?: \\E | ) ) ) (?<quoted_string_empty> \\Q\\E ) (?<range_qualifier> \{ (?: \d+ (?: , \d* )? | , \d+ ) \} )(?<regex> (?&start_item)* (?&branch) (?: \| (?&branch) )* )(?<resetting_group> \( \? \| (?®ex) \) )(?<simple_assertion> \^ | \$ | \\A | \\b | \\B | \\G | \\z | \\Z )(?<special_escape> \\K )(?<start_item> \( \* (?: ANY | ANYCRLF | BSR_ANYCRLF | BSR_UNICODE | CR | CRLF | LF | LIMIT_MATCH=\d+ | LIMIT_DEPTH=\d+ | LIMIT_HEAP=\d+ | NOTEMPTY | NOTEMPTY_ATSTART | NO_AUTO_POSSESS | NO_DOTSTAR_ANCHOR | NO_JIT | NO_START_OPT | NUL | UTF | UCP ) \) )(?<subroutine_call> (?: \(\?R\) | \(\?[+-]?\d+\) | \(\? (?: & | P> ) (?&groupname) \) | \\g < (?&groupname) > | \\g ' (?&groupname) ' | \\g < [+-]? \d+ > | \\g ' [+-]? \d+ ) )(?<verb> \(\* (?: ACCEPT | FAIL | F | COMMIT | (?:MARK)?:(?&verbname) | (?:PRUNE|SKIP|THEN) (?: : (?&verbname)? )? ) \) )(?<verbname> [^)]+ ))^(?&delimited_regex)$/ 9709 0: /(?sx)(?(DEFINE)(?<assertion> (?&simple_assertion) | (?&lookaround) )(?<atomic_group> \( \? > (?®ex) \) )(?<back_reference> \\ \d+ | \\g (?: [+-]?\d+ | \{ (?: [+-]?\d+ | (?&groupname) ) \} ) | \\k <(?&groupname)> | \\k '(?&groupname)' | \\k \{ (?&groupname) \} | \( \? P= (?&groupname) \) )(?<branch> (?:(?&assertion) | (?&callout) | (?&comment) | (?&option_setting) | (?&qualified_item) | (?"ed_string) | (?"ed_string_empty) | (?&special_escape) | (?&verb) )* )(?<callout> \(\?C (?: \d+ | (?: (?<D>["'`^%\#\$]) (?: \k'D'\k'D' | (?!\k'D') . )* \k'D' | \{ (?: \}\} | [^}]*+ )* \} ) )? \) )(?<capturing_group> \( (?: \? P? < (?&groupname) > | \? ' (?&groupname) ' )? (?®ex) \) )(?<character_class> \[ \^?+ (?: \] (?&class_item)* | (?&class_item)+ ) \] )(?<character_type> (?! \\N\{\w+\} ) \\ [dDsSwWhHvVRN] )(?<class_item> (?: \[ : (?: alnum|alpha|ascii|blank|cntrl|digit|graph|lower|print| punct|space|upper|word|xdigit ) : \] | (?"ed_string) | (?"ed_string_empty) | (?&escaped_character) | (?&character_type) | [^]] ) )(?<comment> \(\?\# [^)]* \) | (?"ed_string_empty) | \\E )(?<condition> (?: \( [+-]? \d+ \) | \( < (?&groupname) > \) | \( ' (?&groupname) ' \) | \( R \d* \) | \( R & (?&groupname) \) | \( (?&groupname) \) | \( DEFINE \) | \( VERSION >?=\d+(?:\.\d\d?)? \) | (?&callout)?+ (?&comment)* (?&lookaround) ) )(?<conditional_group> \(\? (?&condition) (?&branch) (?: \| (?&branch) )? \) )(?<delimited_regex> (?<delimiter> [-\x{2f}!"'`=_:;,%&@~]) (?®ex) \k'delimiter' .* )(?<escaped_character> \\ (?: 0[0-7]{1,2} | [0-7]{1,3} | o\{ [0-7]+ \} | x \{ (*COMMIT) [[:xdigit:]]* \} | x [[:xdigit:]]{0,2} | [aefnrt] | c[[:print:]] | [^[:alnum:]] ) )(?<group> (?&capturing_group) | (?&non_capturing_group) | (?&resetting_group) | (?&atomic_group) | (?&conditional_group) )(?<groupname> [a-zA-Z_]\w* )(?<literal_character> (?! (?&range_qualifier) ) [^[()|*+?.\$\\] )(?<lookaround> \(\? (?: = | ! | <= | <! ) (?®ex) \) )(?<non_capturing_group> \(\? [iJmnsUx-]* : (?®ex) \) )(?<option_setting> \(\? [iJmnsUx-]* \) )(?<qualified_item> (?:\. | (?&lookaround) | (?&back_reference) | (?&character_class) | (?&character_type) | (?&escaped_character) | (?&group) | (?&subroutine_call) | (?&literal_character) | (?"ed_string) ) (?&comment)? (?&qualifier)? )(?<qualifier> (?: [?*+] | (?&range_qualifier) ) [+?]? )(?<quoted_string> (?: \\Q (?: (?!\\E | \k'delimiter') . )++ (?: \\E | ) ) ) (?<quoted_string_empty> \\Q\\E ) (?<range_qualifier> \{ (?: \d+ (?: , \d* )? | , \d+ ) \} )(?<regex> (?&start_item)* (?&branch) (?: \| (?&branch) )* )(?<resetting_group> \( \? \| (?®ex) \) )(?<simple_assertion> \^ | \$ | \\A | \\b | \\B | \\G | \\z | \\Z )(?<special_escape> \\K )(?<start_item> \( \* (?: ANY | ANYCRLF | BSR_ANYCRLF | BSR_UNICODE | CR | CRLF | LF | LIMIT_MATCH=\d+ | LIMIT_DEPTH=\d+ | LIMIT_HEAP=\d+ | NOTEMPTY | NOTEMPTY_ATSTART | NO_AUTO_POSSESS | NO_DOTSTAR_ANCHOR | NO_JIT | NO_START_OPT | NUL | UTF | UCP ) \) )(?<subroutine_call> (?: \(\?R\) | \(\?[+-]?\d+\) | \(\? (?: & | P> ) (?&groupname) \) | \\g < (?&groupname) > | \\g ' (?&groupname) ' | \\g < [+-]? \d+ > | \\g ' [+-]? \d+ ) )(?<verb> \(\* (?: ACCEPT | FAIL | F | COMMIT | (?:MARK)?:(?&verbname) | (?:PRUNE|SKIP|THEN) (?: : (?&verbname)? )? ) \) )(?<verbname> [^)]+ ))^(?&delimited_regex)$/ 9710 \= Expect no match 9711 /((?(?C'')\QX\E(?!((?(?C'')(?!X=X));=)r*X=X));=)/ 9712 No match 9713 /(?:(?(2y)a|b)(X))+/ 9714 No match 9715 /a(*MARK)b/ 9716 No match 9717 /a(*CR)b/ 9718 No match 9719 /(?P<abn>(?P=abn)(?<badstufxxx)/ 9720 No match 9721 9722 # -------------------------------------------------------------------------- 9723 9724 /<(?x:[a b])>/xx 9725 < > 9726 0: < > 9727 9728 /<(?:[a b])>/xx 9729 < > 9730 No match 9731 9732 /<(?xxx:[a b])>/ 9733 < > 9734 No match 9735 9736 /<(?-x:[a b])>/xx 9737 < > 9738 0: < > 9739 9740 /[[:digit:]-]+/ 9741 12-24 9742 0: 12-24 9743 9744 /((?<=((*ACCEPT)) )\1?\b) / 9745 \= Expect no match 9746 ((?<=((*ACCEPT)) )\\1?\\b)\x20 9747 No match 9748 9749 /((?<=((*ACCEPT))X)\1?Y)\1/ 9750 XYYZ 9751 0: YY 9752 1: Y 9753 2: 9754 9755 /((?<=((*ACCEPT))X)\1?Y(*ACCEPT))\1/ 9756 XYYZ 9757 0: Y 9758 1: Y 9759 2: 9760 9761 /(?(DEFINE)(?<optional_a>a?)X)^(?&optional_a)a$/ 9762 aa 9763 0: aa 9764 a 9765 0: a 9766 9767 /^(a?)b(?1)a/ 9768 abaa 9769 0: abaa 9770 1: a 9771 aba 9772 0: aba 9773 1: a 9774 baa 9775 0: baa 9776 1: 9777 ba 9778 0: ba 9779 1: 9780 9781 /^(a?)+b(?1)a/ 9782 abaa 9783 0: abaa 9784 1: 9785 aba 9786 0: aba 9787 1: 9788 baa 9789 0: baa 9790 1: 9791 ba 9792 0: ba 9793 1: 9794 9795 /^(a?)++b(?1)a/ 9796 abaa 9797 0: abaa 9798 1: 9799 aba 9800 0: aba 9801 1: 9802 baa 9803 0: baa 9804 1: 9805 ba 9806 0: ba 9807 1: 9808 9809 /^(a?)+b/ 9810 b 9811 0: b 9812 1: 9813 ab 9814 0: ab 9815 1: 9816 aaab 9817 0: aaab 9818 1: 9819 9820 /(?=a+)a(a+)++b/ 9821 aab 9822 0: aab 9823 1: a 9824 9825 /(?<=\G.)/g,aftertext 9826 abc 9827 0: 9828 0+ bc 9829 0: 9830 0+ c 9831 0: 9832 0+ 9833 9834 /(?<=(?=.)?)/ 9835 9836 /(?<=(?=.)?+)/ 9837 9838 /(?<=(?=.)*)/ 9839 9840 /(?<=(?=.){4,5})/ 9841 9842 /(?<=(?=.){4,5}x)/ 9843 9844 /a(?=.(*:X))(*SKIP:X)(*F)|(.)/ 9845 abc 9846 0: a 9847 1: a 9848 9849 /a(?>(*:X))(*SKIP:X)(*F)|(.)/ 9850 abc 9851 0: a 9852 1: a 9853 9854 /a(?:(*:X))(*SKIP:X)(*F)|(.)/ 9855 abc 9856 0: b 9857 1: b 9858 9859 #pattern no_start_optimize 9860 9861 /(?>a(*:1))(?>b(*:1))(*SKIP:1)x|.*/ 9862 abc 9863 0: abc 9864 9865 /(?>a(*:1))(?>b)(*SKIP:1)x|.*/ 9866 abc 9867 0: abc 9868 9869 #subject mark 9870 9871 /a(*ACCEPT:X)b/ 9872 abc 9873 0: a 9874 MK: X 9875 9876 /(?=a(*ACCEPT:QQ)bc)axyz/ 9877 axyz 9878 0: axyz 9879 MK: QQ 9880 9881 /(?(DEFINE)(a(*ACCEPT:X)))(?1)b/ 9882 abc 9883 0: ab 9884 MK: X 9885 9886 /a(*F:X)b/ 9887 abc 9888 No match, mark = X 9889 9890 /(?(DEFINE)(a(*F:X)))(?1)b/ 9891 abc 9892 No match, mark = X 9893 9894 /a(*COMMIT:X)b/ 9895 abc 9896 0: ab 9897 MK: X 9898 9899 /(?(DEFINE)(a(*COMMIT:X)))(?1)b/ 9900 abc 9901 0: ab 9902 MK: X 9903 9904 /a+(*:Z)b(*COMMIT:X)(*SKIP:Z)c|.*/ 9905 aaaabd 9906 0: bd 9907 9908 /a+(*:Z)b(*COMMIT:X)(*SKIP:X)c|.*/ 9909 aaaabd 9910 No match, mark = X 9911 9912 /a(*COMMIT:X)b/ 9913 axabc 9914 No match, mark = X 9915 9916 #pattern -no_start_optimize 9917 #subject -mark 9918 9919 /(.COMMIT)(*COMMIT::::::::::interal error:::)/ 9920 9921 /(*COMMIT:)/ 9922 9923 /(*COMMIT:]w)/ 9924 9925 /(?i)A(?^)B(?^x:C D)(?^i)e f/ 9926 aBCDE F 9927 0: aBCDE F 9928 \= Expect no match 9929 aBCDEF 9930 No match 9931 AbCDe f 9932 No match 9933 9934 # End of testinput1 9935
