# This stops me getting screenfulls of syntax errors every time I accidentally # run this file via a shell glob. The full format of this file is given # in regexp.t # Prior to the implementation of autoloading of \N{}, tests that used \N{name} # could not go in this file, and were farmed out to other .t's, where they # remain # # pat string y/n/etc expr expected-expr skip-reason comment __END__ abc abc y $& abc abc abc y $-[0] 0 abc abc y $+[0] 3 abc xbc n - - abc axc n - - abc abx n - - abc xabcy y $& abc abc xabcy y $-[0] 1 abc xabcy y $+[0] 4 abc ababc y $& abc abc ababc y $-[0] 2 abc ababc y $+[0] 5 ab*c abc y $& abc ab*c abc y $-[0] 0 ab*c abc y $+[0] 3 ab*bc abc y $& abc ab*bc abc y $-[0] 0 ab*bc abc y $+[0] 3 ab*bc abbc y $& abbc ab*bc abbc y $-[0] 0 ab*bc abbc y $+[0] 4 ab*bc abbbbc y $& abbbbc ab*bc abbbbc y $-[0] 0 ab*bc abbbbc y $+[0] 6 .{1} abbbbc y $& a .{1} abbbbc y $-[0] 0 .{1} abbbbc y $+[0] 1 .{3,4} abbbbc y $& abbb .{3,4} abbbbc y $-[0] 0 .{3,4} abbbbc y $+[0] 4 \N{1} abbbbc y $& a \N{1} abbbbc y $-[0] 0 \N{1} abbbbc y $+[0] 1 /\N {1}/x abbbbc y $& a /\N {1}/x abbbbc y $-[0] 0 /\N {1}/x abbbbc y $+[0] 1 \N{3,4} abbbbc y $& abbb \N{3,4} abbbbc y $-[0] 0 \N{3,4} abbbbc y $+[0] 4 \N{ 3 , 4 } abbbbc y $+[0] 4 /\N {3,4}/x abbbbc y $& abbb /\N {3,4}/x abbbbc y $-[0] 0 /\N {3,4}/x abbbbc y $+[0] 4 ab{0,}bc abbbbc y $& abbbbc ab{0,}bc abbbbc y $-[0] 0 ab{0,}bc abbbbc y $+[0] 6 ab+bc abbc y $& abbc ab+bc abbc y $-[0] 0 ab+bc abbc y $+[0] 4 ab+bc abc n - - ab+bc abq n - - ab{1,}bc abq n - - ab+bc abbbbc y $& abbbbc ab+bc abbbbc y $-[0] 0 ab+bc abbbbc y $+[0] 6 ab{1,}bc abbbbc y $& abbbbc ab{1,}bc abbbbc y $-[0] 0 ab{1,}bc abbbbc y $+[0] 6 ab{1,3}bc abbbbc y $& abbbbc ab{1,3}bc abbbbc y $-[0] 0 ab{1,3}bc abbbbc y $+[0] 6 ab{3,4}bc abbbbc y $& abbbbc ab{3,4}bc abbbbc y $-[0] 0 ab{3,4}bc abbbbc y $+[0] 6 ab{4,5}bc abbbbc n - - ab?bc abbc y $& abbc ab?bc abc y $& abc ab{0,1}bc abc y $& abc ab?bc abbbbc n - - ab?c abc y $& abc ab{0,1}c abc y $& abc ^abc$ abc y $& abc ^abc$ abcc n - - ^abc abcc y $& abc ^abc$ aabc n - - abc$ aabc y $& abc abc$ aabcd n - - ^ abc y $& $ abc y $& a.c abc y $& abc a.c axc y $& axc a\Nc abc y $& abc /a\N c/x abc y $& abc a.*c axyzc y $& axyzc a\N*c axyzc y $& axyzc /a\N *c/x axyzc y $& axyzc a.*c axyzd n - - a\N*c axyzd n - - /a\N *c/x axyzd n - - a[bc]d abc n - - a[bc]d abd y $& abd a[b]d abd y $& abd [a][b][d] abd y $& abd .[b]. abd y $& abd .[b]. aBd n - - (?i:.[b].) abd y $& abd (?i:\N[b]\N) abd y $& abd a[b-d]e abd n - - a[b-d]e ace y $& ace a[b-d] aac y $& ac a[-b] a- y $& a- a[b-] a- y $& a- a[b-a] - c - Invalid [] range a[]b - c - Unmatched [ a[ - c - Unmatched [ a] a] y $& a] a[]]b a]b y $& a]b a[^bc]d aed y $& aed a[^bc]d abd n - - a[^-b]c adc y $& adc a[^-b]c a-c n - - a[^]b]c a]c n - - a[^]b]c adc y $& adc \ba\b a- y - - \ba\b -a y - - \ba\b -a- y - - \by\b xy n - - \by\b yz n - - \by\b xyz n - - \Ba\B a- n - - \Ba\B -a n - - \Ba\B -a- n - - \By\b xy y - - \By\b xy y $-[0] 1 \By\b xy y $+[0] 2 \By\b xy y - - \by\B yz y - - \By\B xyz y - - \b n - - \b{gcb} n - - \b{ gcb } n - - \b{lb} n - - \b{ lb } n - - \b{sb} n - - \b{ sb } n - - \b{ wb } n - - \b{wb} n - - \B y - - \B{gcb} y - - \B{ gcb } y - - \B{lb} y - - \B{ lb } y - - \B{sb} y - - \B{ sb } y - - \B{wb} y - - \B{ wb } y - - \w a y - - \w - n - - \W a n - - \W - y - - a\sb a b y - - a\sb a-b n - - a\Sb a b n - - a\Sb a-b y - - \d 1 y - - \d - n - - \D 1 n - - \D - y - - [\w] a y - - [\w] - n - - [\W] a n - - [\W] - y - - a[\s]b a b y - - a[\s]b a-b n - - a[\S]b a b n - - a[\S]b a-b y - - [\d] 1 y - - [\d] - n - - [\D] 1 n - - [\D] - y - - ab|cd abc y $& ab ab|cd abcd y $& ab ()ef def y $&-$1 ef- ()ef def y $-[0] 1 ()ef def y $+[0] 3 ()\x{100}\x{1000} d\x{100}\x{1000} y $+[0] 3 ()ef def y $-[1] 1 ()ef def y $+[1] 1 *a - c - Quantifier follows nothing (|*)b - c - Quantifier follows nothing (*)b - c - Unknown verb $b b n - - a\ - c - Search pattern not terminated a\(b a(b y $&-$1 a(b- a\(*b ab y $& ab a\(*b a((b y $& a((b a\\b a\\b y $& a\\b abc) - c - Unmatched ) (abc - c - Unmatched ( ((a)) abc y $&-$1-$2 a-a-a ((a)) abc y $-[0]-$-[1]-$-[2] 0-0-0 ((a)) abc y $+[0]-$+[1]-$+[2] 1-1-1 ((a)) abc b @- 0 0 0 ((a)) abc b @+ 1 1 1 (a)b(c) abc y $&-$1-$2 abc-a-c (a)b(c) abc y $-[0]-$-[1]-$-[2] 0-0-2 (a)b(c) abc y $+[0]-$+[1]-$+[2] 3-1-3 a+b+c aabbabc y $& abc a{1,}b{1,}c aabbabc y $& abc a** - c - Nested quantifiers a.+?c abcabc y $& abc (a+|b)* ab y $&-$1 ab-b (a+|b)* ab y $-[0] 0 (a+|b)* ab y $+[0] 2 (a+|b)* ab y $-[1] 1 (a+|b)* ab y $+[1] 2 (a+|b){0,} ab y $&-$1 ab-b (a+|b)+ ab y $&-$1 ab-b (a+|b){1,} ab y $&-$1 ab-b (a+|b)? ab y $&-$1 a-a (a+|b){0,1} ab y $&-$1 a-a )( - c - Unmatched ) [^ab]* cde y $& cde abc n - - a* y $& ([abc])*d abbbcd y $&-$1 abbbcd-c ([abc])*bcd abcd y $&-$1 abcd-a a|b|c|d|e e y $& e (a|b|c|d|e)f ef y $&-$1 ef-e (a|b|c|d|e)f ef y $-[0] 0 (a|b|c|d|e)f ef y $+[0] 2 (a|b|c|d|e)f ef y $-[1] 0 (a|b|c|d|e)f ef y $+[1] 1 abcd*efg abcdefg y $& abcdefg ab* xabyabbbz y $& ab ab* xayabbbz y $& a (ab|cd)e abcde y $&-$1 cde-cd [abhgefdc]ij hij y $& hij ^(ab|cd)e abcde n x$1y xy (abc|)ef abcdef y $&-$1 ef- (a|b)c*d abcd y $&-$1 bcd-b (ab|ab*)bc abc y $&-$1 abc-a a([bc]*)c* abc y $&-$1 abc-bc a([bc]*)(c*d) abcd y $&-$1-$2 abcd-bc-d a([bc]*)(c*d) abcd y $-[0] 0 a([bc]*)(c*d) abcd y $+[0] 4 a([bc]*)(c*d) abcd y $-[1] 1 a([bc]*)(c*d) abcd y $+[1] 3 a([bc]*)(c*d) abcd y $-[2] 3 a([bc]*)(c*d) abcd y $+[2] 4 a([bc]+)(c*d) abcd y $&-$1-$2 abcd-bc-d a([bc]*)(c+d) abcd y $&-$1-$2 abcd-b-cd a([bc]*)(c+d) abcd y $-[0] 0 a([bc]*)(c+d) abcd y $+[0] 4 a([bc]*)(c+d) abcd y $-[1] 1 a([bc]*)(c+d) abcd y $+[1] 2 a([bc]*)(c+d) abcd y $-[2] 2 a([bc]*)(c+d) abcd y $+[2] 4 a[bcd]*dcdcde adcdcde y $& adcdcde a[bcd]+dcdcde adcdcde n - - (ab|a)b*c abc y $&-$1 abc-ab (ab|a)b*c abc y $-[0] 0 (ab|a)b*c abc y $+[0] 3 (ab|a)b*c abc y $-[1] 0 (ab|a)b*c abc y $+[1] 2 ((a)(b)c)(d) abcd y $1-$2-$3-$4 abc-a-b-d ((a)(b)c)(d) abcd y $-[0] 0 ((a)(b)c)(d) abcd y $+[0] 4 ((a)(b)c)(d) abcd y $-[1] 0 ((a)(b)c)(d) abcd y $+[1] 3 ((a)(b)c)(d) abcd y $-[2] 0 ((a)(b)c)(d) abcd y $+[2] 1 ((a)(b)c)(d) abcd y $-[3] 1 ((a)(b)c)(d) abcd y $+[3] 2 ((a)(b)c)(d) abcd y $-[4] 3 ((a)(b)c)(d) abcd y $+[4] 4 [a-zA-Z_][a-zA-Z0-9_]* alpha y $& alpha [_A-Z] } n - - # This could match on EBCDIC if A-Z not excluding things in middle ^a(bc+|b[eh])g|.h$ abh y $&-$1 bh- (bc+d$|ef*g.|h?i(j|k)) effgz y $&-$1-$2 effgz-effgz- (bc+d$|ef*g.|h?i(j|k)) ij y $&-$1-$2 ij-ij-j (bc+d$|ef*g.|h?i(j|k)) effg n - - (bc+d$|ef*g.|h?i(j|k)) bcdd n - - (bc+d$|ef*g.|h?i(j|k)) reffgz y $&-$1-$2 effgz-effgz- ((((((((((a)))))))))) a y $10 a ((((((((((a)))))))))) a y $-[0] 0 ((((((((((a)))))))))) a y $+[0] 1 ((((((((((a)))))))))) a y $-[10] 0 ((((((((((a)))))))))) a y $+[10] 1 ((((((((((a))))))))))\10 aa y $& aa ((((((((((a))))))))))${bang} aa n - - ((((((((((a))))))))))${bang} a! y $& a! (((((((((a))))))))) a y $& a [89]+ 1((((((7(9)))))) y - - multiple words of text uh-uh n - - multiple words multiple words, yeah y $& multiple words (.*)c(.*) abcde y $&-$1-$2 abcde-ab-de \((.*), (.*)\) (a, b) y ($2, $1) (b, a) [k] ab n - - abcd abcd y $&-\$&-\\$& abcd-\$&-\\abcd a(bc)d abcd y $1-\$1-\\$1 bc-\$1-\\bc a[-]?c ac y $& ac (abc)\1 abcabc y $1 abc ([a-c]*)\1 abcabc y $1 abc \1 - c - Reference to nonexistent group \2 - c - Reference to nonexistent group \g1 - c - Reference to nonexistent group \g-1 - c - Reference to nonexistent or unclosed group \g{1} - c - Reference to nonexistent group \g{ 1 } - c - Reference to nonexistent group \g{-1} - c - Reference to nonexistent or unclosed group \g{ -1 } - c - Reference to nonexistent or unclosed group \g0 - c - Reference to invalid group 0 \g-0 - c - Reference to invalid group 0 \g{0} - c - Reference to invalid group 0 \g{ 0 } - c - Reference to invalid group 0 \g{-0} - c - Reference to invalid group 0 \g{ -0 } - c - Reference to invalid group 0 (a)|\1 a y - - (a)|\1 x n - Reference to group in different branch (?:(b)?a)\1 a n - Reference to group that did not match (a)|\2 - c - Reference to nonexistent group (([a-c])b*?\2)* ababbbcbc y $&-$1-$2 ababb-bb-b (([a-c])b*?\2){3} ababbbcbc y $&-$1-$2 ababbbcbc-cbc-c ((\3|b)\2(a)x)+ aaxabxbaxbbx n - - ((\3|b)\2(a)x)+ aaaxabaxbaaxbbax y $&-$1-$2-$3 bbax-bbax-b-a ((\3|b)\2(a)){2,} bbaababbabaaaaabbaaaabba y $&-$1-$2-$3 bbaaaabba-bba-b-a #Bug #3589 - up to perl-5.6.0 matches incorrectly, from 5.6.1 not anymore ^((.)?a\2)+$ babadad n - - (a)|(b) b y $-[0] 0 (a)|(b) b y $+[0] 1 (a)|(b) b y x$-[1] x (a)|(b) b y x$+[1] x (a)|(b) b y $-[2] 0 (a)|(b) b y $+[2] 1 'abc'i ABC y $& ABC 'abc'i XBC n - - 'abc'i AXC n - - 'abc'i ABX n - - 'abc'i XABCY y $& ABC 'abc'i ABABC y $& ABC 'ab*c'i ABC y $& ABC 'ab*bc'i ABC y $& ABC 'ab*bc'i ABBC y $& ABBC 'ab*?bc'i ABBBBC y $& ABBBBC 'ab{0,}?bc'i ABBBBC y $& ABBBBC 'ab+?bc'i ABBC y $& ABBC 'ab+bc'i ABC n - - 'ab+bc'i ABQ n - - 'ab{1,}bc'i ABQ n - - 'ab+bc'i ABBBBC y $& ABBBBC 'ab{1,}?bc'i ABBBBC y $& ABBBBC 'ab{1,3}?bc'i ABBBBC y $& ABBBBC 'ab{3,4}?bc'i ABBBBC y $& ABBBBC 'ab{4,5}?bc'i ABBBBC n - - 'ab??bc'i ABBC y $& ABBC 'ab??bc'i ABC y $& ABC 'ab{0,1}?bc'i ABC y $& ABC 'ab??bc'i ABBBBC n - - 'ab??c'i ABC y $& ABC 'ab{0,1}?c'i ABC y $& ABC '^abc$'i ABC y $& ABC '^abc$'i ABCC n - - '^abc'i ABCC y $& ABC '^abc$'i AABC n - - 'abc$'i AABC y $& ABC '^'i ABC y $& '$'i ABC y $& 'a.c'i ABC y $& ABC 'a.c'i AXC y $& AXC 'a\Nc'i ABC y $& ABC 'a.*?c'i AXYZC y $& AXYZC 'a.*c'i AXYZD n - - 'a[bc]d'i ABC n - - 'a[bc]d'i ABD y $& ABD 'a[b-d]e'i ABD n - - 'a[b-d]e'i ACE y $& ACE 'a[b-d]'i AAC y $& AC 'a[-b]'i A- y $& A- 'a[b-]'i A- y $& A- 'a[b-a]'i - c - Invalid [] range 'a[]b'i - c - Unmatched [ 'a['i - c - Unmatched [ 'a]'i A] y $& A] 'a[]]b'i A]B y $& A]B 'a[^bc]d'i AED y $& AED 'a[^bc]d'i ABD n - - 'a[^-b]c'i ADC y $& ADC 'a[^-b]c'i A-C n - - 'a[^]b]c'i A]C n - - 'a[^]b]c'i ADC y $& ADC 'ab|cd'i ABC y $& AB 'ab|cd'i ABCD y $& AB '()ef'i DEF y $&-$1 EF- '*a'i - c - Quantifier follows nothing '(|*)b'i - c - Quantifier follows nothing '(*)b'i - c - Unknown verb '$b'i B n - - 'a\'i - c - Search pattern not terminated 'a\(b'i A(B y $&-$1 A(B- 'a\(*b'i AB y $& AB 'a\(*b'i A((B y $& A((B 'a\\b'i A\\B y $& A\\B 'abc)'i - c - Unmatched ) '(abc'i - c - Unmatched ( '((a))'i ABC y $&-$1-$2 A-A-A '(a)b(c)'i ABC y $&-$1-$2 ABC-A-C 'a+b+c'i AABBABC y $& ABC 'a{1,}b{1,}c'i AABBABC y $& ABC 'a**'i - c - Nested quantifiers 'a.+?c'i ABCABC y $& ABC 'a.*?c'i ABCABC y $& ABC 'a.{0,5}?c'i ABCABC y $& ABC '(a+|b)*'i AB y $&-$1 AB-B '(a+|b){0,}'i AB y $&-$1 AB-B '(a+|b)+'i AB y $&-$1 AB-B '(a+|b){1,}'i AB y $&-$1 AB-B '(a+|b)?'i AB y $&-$1 A-A '(a+|b){0,1}'i AB y $&-$1 A-A '(a+|b){0,1}?'i AB y $&-$1 - ')('i - c - Unmatched ) '[^ab]*'i CDE y $& CDE 'abc'i n - - 'a*'i y $& '([abc])*d'i ABBBCD y $&-$1 ABBBCD-C '([abc])*bcd'i ABCD y $&-$1 ABCD-A 'a|b|c|d|e'i E y $& E '(a|b|c|d|e)f'i EF y $&-$1 EF-E 'abcd*efg'i ABCDEFG y $& ABCDEFG 'ab*'i XABYABBBZ y $& AB 'ab*'i XAYABBBZ y $& A '(ab|cd)e'i ABCDE y $&-$1 CDE-CD '[abhgefdc]ij'i HIJ y $& HIJ '^(ab|cd)e'i ABCDE n x$1y XY '(abc|)ef'i ABCDEF y $&-$1 EF- '(a|b)c*d'i ABCD y $&-$1 BCD-B '(ab|ab*)bc'i ABC y $&-$1 ABC-A 'a([bc]*)c*'i ABC y $&-$1 ABC-BC 'a([bc]*)(c*d)'i ABCD y $&-$1-$2 ABCD-BC-D 'a([bc]+)(c*d)'i ABCD y $&-$1-$2 ABCD-BC-D 'a([bc]*)(c+d)'i ABCD y $&-$1-$2 ABCD-B-CD 'a[bcd]*dcdcde'i ADCDCDE y $& ADCDCDE 'a[bcd]+dcdcde'i ADCDCDE n - - '(ab|a)b*c'i ABC y $&-$1 ABC-AB '((a)(b)c)(d)'i ABCD y $1-$2-$3-$4 ABC-A-B-D '[a-zA-Z_][a-zA-Z0-9_]*'i ALPHA y $& ALPHA '^a(bc+|b[eh])g|.h$'i ABH y $&-$1 BH- '(bc+d$|ef*g.|h?i(j|k))'i EFFGZ y $&-$1-$2 EFFGZ-EFFGZ- '(bc+d$|ef*g.|h?i(j|k))'i IJ y $&-$1-$2 IJ-IJ-J '(bc+d$|ef*g.|h?i(j|k))'i EFFG n - - '(bc+d$|ef*g.|h?i(j|k))'i BCDD n - - '(bc+d$|ef*g.|h?i(j|k))'i REFFGZ y $&-$1-$2 EFFGZ-EFFGZ- '((((((((((a))))))))))'i A y $10 A '((((((((((a))))))))))\10'i AA y $& AA '((((((((((a))))))))))${bang}'i AA n - - '((((((((((a))))))))))${bang}'i A! y $& A! '(((((((((a)))))))))'i A y $& A '(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))'i A y $1 A '(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))'i C y $1 C 'multiple words of text'i UH-UH n - - 'multiple words'i MULTIPLE WORDS, YEAH y $& MULTIPLE WORDS '(.*)c(.*)'i ABCDE y $&-$1-$2 ABCDE-AB-DE '\((.*), (.*)\)'i (A, B) y ($2, $1) (B, A) '[k]'i AB n - - 'abcd'i ABCD y $&-\$&-\\$& ABCD-\$&-\\ABCD 'a(bc)d'i ABCD y $1-\$1-\\$1 BC-\$1-\\BC 'a[-]?c'i AC y $& AC '(abc)\1'i ABCABC y $1 ABC '([a-c]*)\1'i ABCABC y $1 ABC a(?!b). abad y $& ad (?=)a a y $& a a(?=d). abad y $& ad a(?=c|d). abad y $& ad a(?:b|c|d)(.) ace y $1 e a(?:b|c|d)*(.) ace y $1 e a(?:b|c|d)+?(.) ace y $1 e a(?:b|c|d)+?(.) acdbcdbe y $1 d a(?:b|c|d)+(.) acdbcdbe y $1 e a(?:b|c|d){2}(.) acdbcdbe y $1 b a(?:b|c|d){4,5}(.) acdbcdbe y $1 b a(?:b|c|d){4,5}?(.) acdbcdbe y $1 d ((foo)|(bar))* foobar y $1-$2-$3 bar-foo-bar :(?: - c - Sequence (? incomplete a(?:b|c|d){6,7}(.) acdbcdbe y $1 e a(?:b|c|d){6,7}?(.) acdbcdbe y $1 e a(?:b|c|d){5,6}(.) acdbcdbe y $1 e a(?:b|c|d){5,6}?(.) acdbcdbe y $1 b a(?:b|c|d){5,7}(.) acdbcdbe y $1 e a(?:b|c|d){5,7}?(.) acdbcdbe y $1 b a(?:b|(c|e){1,2}?|d)+?(.) ace y $1$2 ce ^(.+)?B AB y $1 A ^([^a-z])|(\^)$ . y $1 . ^[<>]& <&OUT y $& <& ^(a\1?){4}$ aaaaaaaaaa y $1 aaaa ^(a\1?){4}$ aaaaaaaaa n - 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sc - False [] range \GX.*X aaaXbX n - - (\d+\.\d+) 3.1415926 y $1 3.1415926 (\ba.{0,10}br) have a web browser y $1 a web br '\.c(pp|xx|c)?$'i Changes n - - '\.c(pp|xx|c)?$'i IO.c y - - '(\.c(pp|xx|c)?$)'i IO.c y $1 .c ^([a-z]:) C:/ n - - '^\S\s+aa$'m \nx aa y - - (^|a)b ab y - - ^([ab]*?)(b)?(c)$ abac y -$2- -- (\w)?(abc)\1b abcab n - - ^(?:.,){2}c a,b,c y - - ^(.,){2}c a,b,c y $1 b, ^(?:[^,]*,){2}c a,b,c y - - ^([^,]*,){2}c a,b,c y $1 b, ^([^,]*,){3}d aaa,b,c,d y $1 c, ^([^,]*,){3,}d aaa,b,c,d y $1 c, ^([^,]*,){0,3}d aaa,b,c,d y $1 c, ^([^,]{1,3},){3}d aaa,b,c,d y $1 c, ^([^,]{1,3},){3,}d aaa,b,c,d y $1 c, ^([^,]{1,3},){0,3}d aaa,b,c,d y $1 c, ^([^,]{1,},){3}d aaa,b,c,d y $1 c, ^([^,]{1,},){3,}d aaa,b,c,d y $1 c, ^([^,]{1,},){0,3}d aaa,b,c,d y $1 c, ^([^,]{0,3},){3}d aaa,b,c,d y $1 c, ^([^,]{0,3},){3,}d aaa,b,c,d y $1 c, ^([^,]{0,3},){0,3}d aaa,b,c,d y $1 c, (?i) y - - (?a:((?u)\w)\W) \xC0\xC0 y $& \xC0\xC0 '(?!\A)x'm a\nxb\n y - - ^(a(b)?)+$ aba y -$1-$2- -a-- ^(aa(bb)?)+$ aabbaa y -$1-$2- -aa-- '^.{9}abc.*\n'm 123\nabcabcabcabc\n y - - ^(a)?a$ a y -$1- -- ^(a)?(?(1)a|b)+$ a n - - ^(a\1?)(a\1?)(a\2?)(a\3?)$ aaaaaa y $1,$2,$3,$4 a,aa,a,aa ^(a\1?){4}$ aaaaaa y $1 aa ^(0+)?(?:x(1))? x1 y - - ^([0-9a-fA-F]+)(?:x([0-9a-fA-F]+)?)(?:x([0-9a-fA-F]+))? 012cxx0190 y - - ^(b+?|a){1,2}c bbbac y $1 a ^(b+?|a){1,2}c bbbbac y $1 a \((\w\. \w+)\) cd. (A. Tw) y -$1- -A. Tw- ((?:aaaa|bbbb)cccc)? aaaacccc y - - ((?:aaaa|bbbb)cccc)? bbbbcccc y - - (a)?(a)+ a y $1:$2 :a - (ab)?(ab)+ ab y $1:$2 :ab - (abc)?(abc)+ abc y $1:$2 :abc - 'b\s^'m a\nb\n n - - \ba a y - - ^(a(??{"(?!)"})|(a)(?{1}))b ab y $2 a # [ID 20010811.006 (#7512)] ab(?i)cd AbCd n - - # [ID 20010809.023 (#7503)] ab(?i)cd abCd y - - (A|B)*(?(1)(CD)|(CD)) CD y $2-$3 -CD (A|B)*(?(1)(CD)|(CD)) ABCD y $2-$3 CD- (A|B)*?(?(1)(CD)|(CD)) CD y $2-$3 -CD # [ID 20010803.016 (#7438)] (A|B)*?(?(1)(CD)|(CD)) ABCD y $2-$3 CD- '^(o)(?!.*\1)'i Oo n - - (.*)\d+\1 abc12bc y $1 bc (?m:(foo\s*$)) foo\n bar y $1 foo (.*)c abcd y $1 ab (.*)(?=c) abcd y $1 ab (.*)(?=c)c abcd yB $1 ab (.*)(?=b|c) abcd y $1 ab (.*)(?=b|c)c abcd y $1 ab (.*)(?=c|b) abcd y $1 ab (.*)(?=c|b)c abcd y $1 ab (.*)(?=[bc]) abcd y $1 ab (.*)(?=[bc])c abcd yB $1 ab (.*)(?<=b) abcd y $1 ab (.*)(?<=b)c abcd y $1 ab (.*)(?<=b|c) abcd y $1 abc (.*)(?<=b|c)c abcd y $1 ab (.*)(?<=c|b) abcd y $1 abc (.*)(?<=c|b)c abcd y $1 ab (.*)(?<=[bc]) abcd y $1 abc (.*)(?<=[bc])c abcd y $1 ab (.*?)c abcd y $1 ab (.*?)(?=c) abcd y $1 ab (.*?)(?=c)c abcd yB $1 ab (.*?)(?=b|c) abcd y $1 a (.*?)(?=b|c)c abcd y $1 ab (.*?)(?=c|b) abcd y $1 a (.*?)(?=c|b)c abcd y $1 ab (.*?)(?=[bc]) abcd y $1 a (.*?)(?=[bc])c abcd yB $1 ab (.*?)(?<=b) abcd y $1 ab (.*?)(?<=b)c abcd y $1 ab (.*?)(?<=b|c) abcd y $1 ab (.*?)(?<=b|c)c abcd y $1 ab (.*?)(?<=c|b) abcd y $1 ab (.*?)(?<=c|b)c abcd y $1 ab (.*?)(?<=[bc]) abcd y $1 ab (.*?)(?<=[bc])c abcd y $1 ab 2(]*)?$\1 2 y $& 2 (??{}) x y - - a(b)?? abc y <$1> <> # undef [perl #16773] (\d{1,3}\.){3,} 128.134.142.8 y <$1> <142.> # [perl #18019] ^.{3,4}(.+)\1\z foobarbar y $1 bar # 16 tests for [perl #23171] ^(?:f|o|b){3,4}(.+)\1\z foobarbar y $1 bar ^.{3,4}((?:b|a|r)+)\1\z foobarbar y $1 bar ^(?:f|o|b){3,4}((?:b|a|r)+)\1\z foobarbar y $1 bar ^.{3,4}(.+?)\1\z foobarbar y $1 bar ^(?:f|o|b){3,4}(.+?)\1\z foobarbar y $1 bar ^.{3,4}((?:b|a|r)+?)\1\z foobarbar y $1 bar ^(?:f|o|b){3,4}((?:b|a|r)+?)\1\z foobarbar y $1 bar ^.{2,3}?(.+)\1\z foobarbar y $1 bar ^(?:f|o|b){2,3}?(.+)\1\z foobarbar y $1 bar ^.{2,3}?((?:b|a|r)+)\1\z foobarbar y $1 bar ^(?:f|o|b){2,3}?((?:b|a|r)+)\1\z foobarbar y $1 bar ^.{2,3}?(.+?)\1\z foobarbar y $1 bar ^(?:f|o|b){2,3}?(.+?)\1\z foobarbar y $1 bar ^.{2,3}?((?:b|a|r)+?)\1\z foobarbar y $1 bar ^(?:f|o|b){2,3}?((?:b|a|r)+?)\1\z foobarbar y $1 bar .*a(?!(b|cd)*e).*f ......abef n - - # [perl #23030] x(?# - c - Sequence (?#... not terminated :x(?#: - c - Sequence (?#... not terminated (WORDS|WORD)S WORDS y $1 WORD (X.|WORDS|X.|WORD)S WORDS y $1 WORD (WORDS|WORLD|WORD)S WORDS y $1 WORD (X.|WORDS|WORD|Y.)S WORDS y $1 WORD (foo|fool|x.|money|parted)$ fool y $1 fool (x.|foo|fool|x.|money|parted|y.)$ fool y $1 fool (foo|fool|money|parted)$ fool y $1 fool (foo|fool|x.|money|parted)$ fools n - - (x.|foo|fool|x.|money|parted|y.)$ fools n - - (foo|fool|money|parted)$ fools n - - (a|aa|aaa||aaaa|aaaaa|aaaaaa)(b|c) aaaaaaaaaaaaaaab y $1$2 aaaaaab (a|aa|aaa||aaaa|aaaaa|aaaaaa)(??{$1&&""})(b|c) aaaaaaaaaaaaaaab y $1$2 aaaaaab (a|aa|aaa|aaaa|aaaaa|aaaaaa)(??{$1&&"foo"})(b|c) aaaaaaaaaaaaaaab n - - ^(a*?)(?!(aa|aaaa)*$) aaaaaaaaaaaaaaaaaaaa y $1 a # [perl #34195] ^(a*?)(?!(aa|aaaa)*$)(?=a\z) aaaaaaaa y $1 aaaaaaa ^(.)\s+.$(?(1)) A B y $1 A # [perl #37688] (?:r?)*?r|(.{2,4}) abcde y $1 abcd (?!)+?|(.{2,4}) abcde y $1 abcd ^(a*?)(?!(a{6}|a{5})*$) aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y $+[1] 12 # super-linear cache bug may return 18 ^((?>(?:aa)?b)?) aab y $1 aab ^((?:aa)*)(?:X+((?:\d+|-)(?:X+(.+))?))?$ aaaaX5 y $1 aaaa X(A|B||C|D)Y XXXYYY y $& XY # Trie w/ NOTHING (?i:X([A]|[B]|y[Y]y|[D]|)Y) XXXYYYB y $& XY # Trie w/ NOTHING ^([a]{1})*$ aa y $1 a a(?!b(?!c))(..) abababc y $1 bc # test nested negatives a(?!b(?=a))(..) abababc y $1 bc # test nested lookaheads a(?!b(?!c(?!d(?!e))))...(.) abxabcdxabcde y $1 e X(?!b+(?!(c+)*(?!(c+)*d))).*X aXbbbbbbbcccccccccccccaaaX y - - ^(XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP ^(XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQX: y $1 ZEQQQX ^(XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP ^(XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQX: y $1 ZEQQQX X(?:ABCF[cC]x*|ABCD|ABCF):(?:DIT|DID|DIM) XABCFCxxxxxxxxxx:DIM y $& XABCFCxxxxxxxxxx:DIM (((ABCD|ABCE|ABCF)))(A|B|C[xy]*): ABCFCxxxxxxxxxx:DIM y $& ABCFCxxxxxxxxxx: (?=foo) foo y pos 0 (?=foo) XfooY y pos 1 .*(?=foo) XfooY y pos 1 (?=.*P)P aP y pos 2 (?<=foo) foo y pos 3 (?<=foo) XfooY y pos 4 .*(?<=foo) foo y pos 3 .*(?<=foo) XfooY y pos 4 (?<=foo)Y XfooY y pos 5 o(?<=foo)Y ..XfooY.. y pos 7 X(?=foo)f ..XfooY.. y pos 4 X(?=foo) ..XfooY.. y pos 3 X(?<=foo.)[YZ] ..XfooXY.. y pos 8 (?=XY*foo) Xfoo y pos 0 ^(?=XY*foo) Xfoo y pos 0 ^(??{"a+"})a aa y $& aa ^(?:(??{"a+"})|b)a aa y $& aa ^(??{chr 0x100}).$ \x{100}\x{100} y $& \x{100}\x{100} ^(??{q(\x{100})}). \x{100}\x{100} y $& \x{100}\x{100} ^(??{q(.+)})\x{100} \x{100}\x{100} y $& \x{100}\x{100} ^(??{q(.)})\x{100} \x{100}\x{100} y $& \x{100}\x{100} ^(??{chr 0x100})\xbb \x{100}\x{bb} y $& \x{100}\x{bb} ^(.)(??{"(.)(.)"})(.)$ abcd y $1-$2 a-d ^(.)(??{"(bz+|.)(.)"})(.)$ abcd y $1-$2 a-d ^(.)((??{"(.)(cz+)"})|.) abcd y $1-$2 a-b ^a(?>(??{q(b)}))(??{q(c)})d abcd y - - ^x(??{""})+$ x y $& x ^(<(?:[^<>]+|(?3)|(?1))*>)()(!>!>!>)$ <!>!>><>>!>!>!> y $1 <!>!>><>> ^(<(?:[^<>]+|(?1))*>)$ <<><<<><>>>> y $1 <<><<<><>>>> ((?2)*)([fF]o+) fooFoFoo y $1-$2 fooFo-Foo (<(?:[^<>]+|(?R))*>) <<><<<><>>>> y $1 <<><<<><>>>> (?foo|bar|baz) snofooewa y $1 foo (?foo|bar|baz) snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?foo|bar|baz)(?[ew]+) snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?foo|bar|baz)(?[ew]+) snofooewa yM $+{m} ew miniperl cannot load Tie::Hash::NamedCapture (?foo)|(?bar)|(?baz) snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?foo)(??{ $+{n} }) snofooefoofoowaa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?Pfoo|bar|baz) snofooewa y $1 foo (?Pfoo|bar|baz) snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?Pfoo|bar|baz)(?P[ew]+) snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?Pfoo|bar|baz)(?P[ew]+) snofooewa yM $+{m} ew miniperl cannot load Tie::Hash::NamedCapture (?Pfoo)|(?Pbar)|(?Pbaz) snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?Pfoo)(??{ $+{n} }) snofooefoofoowaa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture (?P<=n>foo|bar|baz) - c - Group name must start with a non-digit word character (?Pfoo|bar|baz) - c - Group name must start with a non-digit word character (?PXfoo|bar|baz) - c - Sequence (?PX...) not recognized /(?'n'foo|bar|baz)/ snofooewa y $1 foo /(?'n'foo|bar|baz)/ snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?'n'foo|bar|baz)(?'m'[ew]+)/ snofooewa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?'n'foo|bar|baz)(?'m'[ew]+)/ snofooewa yM $+{m} ew miniperl cannot load Tie::Hash::NamedCapture /(?'n'foo)|(?'n'bar)|(?baz)/ snobazewa yM $+{n} baz miniperl cannot load Tie::Hash::NamedCapture /(?'n'foo)(??{ $+{n} })/ snofooefoofoowaa yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?'n'foo)\k/ ..foofoo.. y $1 foo /(?'n'foo)\k/ ..foofoo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?foo)\k'n'/ ..foofoo.. y $1 foo /(?foo)\k'n'/ ..foofoo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?:(?foo)|(?bar))\k/ ..barbar.. yM $+{n} bar miniperl cannot load Tie::Hash::NamedCapture /^(?'main'<(?:[^<>]+|(?&crap)|(?&main))*>)(?'empty')(?'crap'!>!>!>)$/ <!>!>><>>!>!>!> yM $+{main} <!>!>><>> miniperl cannot load Tie::Hash::NamedCapture /^(?'main'<(?:[^<>]+|(?&main))*>)$/ <<><<<><>>>> y $1 <<><<<><>>>> /(?'first'(?&second)*)(?'second'[fF]o+)/ fooFoFoo yM $+{first}-$+{second} fooFo-Foo miniperl cannot load Tie::Hash::NamedCapture (?foo)?(?()bar|nada) foobar yM $+{A} foo miniperl cannot load Tie::Hash::NamedCapture (?foo)?(?()bar|nada) foo-barnada y $& nada (?foo)?(?(1)bar|nada) foo-barnada y $& nada (?foo(?(R)bar))?(?1) foofoobar y $1 foo (?foo(?(R)bar))?(?1) foofoobar y $& foofoobar (x)(?foo(?(R&A)bar))?(?&A) xfoofoobar y $2 foo (x)(?foo(?(R&A)bar))?(?&A) xfoofoobar y $& xfoofoobar (x)(?foo(?(R2)bar))?(?&A) xfoofoobar y $2 foo (x)(?foo(?(R2)bar))?(?&A) xfoofoobar y $& xfoofoobar (?1)(?(DEFINE)(blah)) blah y $& blah /^(?(?.)((?&PAL)|.?)\k)$/ madamimadam y $& madamimadam /^(?(?.)((?&PAL)|.?)\k)$/ madamiamadam n - - /(a)?((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a)*((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a)+((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a){1,100}((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a){0,100}((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a)??((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a)*?((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a)+?((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a){1,100}?((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(a){0,100}?((?1))(fox)/ aafox y $1-$2-$3 a-a-fox /(ab)?((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox /(ab)*((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox /(ab)+((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox /(ab){1,100}((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox /(ab){0,100}((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox foo(?0)?bar phoofoofoobarbarbarr y $& foofoobarbar foo(?R)?bar phoofoofoobarbarbarr y $& foofoobarbar # possessive captures a++a aaaaa n - - a*+a aaaaa n - - a{1,5}+a aaaaa n - - a?+a ab n - - a++b aaaaab y $& aaaaab a*+b aaaaab y $& aaaaab a{1,5}+b aaaaab y $& aaaaab a?+b ab y $& ab fooa++a fooaaaaa n - - fooa*+a fooaaaaa n - - fooa{1,5}+a fooaaaaa n - - fooa?+a fooab n - - fooa++b fooaaaaab y $& fooaaaaab fooa*+b fooaaaaab y $& fooaaaaab fooa{1,5}+b fooaaaaab y $& fooaaaaab fooa?+b fooab y $& fooab (?:aA)++(?:aA) aAaAaAaAaA n - aAaAaAaAaA (aA)++(aA) aAaAaAaAaA n - aAaAaAaAaA (aA|bB)++(aA|bB) aAaAbBaAbB n - aAaAbBaAbB (?:aA|bB)++(?:aA|bB) aAbBbBbBaA n - aAbBbBbBaA (?:aA)*+(?:aA) aAaAaAaAaA n - aAaAaAaAaA (aA)*+(aA) aAaAaAaAaA n - aAaAaAaAaA (aA|bB)*+(aA|bB) aAaAbBaAaA n - aAaAbBaAaA (?:aA|bB)*+(?:aA|bB) aAaAaAbBaA n - aAaAaAbBaA (?:aA){1,5}+(?:aA) aAaAaAaAaA n - aAaAaAaAaA (aA){1,5}+(aA) aAaAaAaAaA n - aAaAaAaAaA (aA|bB){1,5}+(aA|bB) aAaAbBaAaA n - aAaAbBaAaA (?:aA|bB){1,5}+(?:aA|bB) bBbBbBbBbB n - bBbBbBbBbB (?:aA)?+(?:aA) aAb n - aAb (aA)?+(aA) aAb n - aAb (aA|bB)?+(aA|bB) bBb n - bBb (?:aA|bB)?+(?:aA|bB) aAb n - aAb (?:aA)++b aAaAaAaAaAb y $& aAaAaAaAaAb (aA)++b aAaAaAaAaAb y $& aAaAaAaAaAb (aA|bB)++b aAbBaAaAbBb y $& aAbBaAaAbBb (?:aA|bB)++b aAbBbBaAaAb y $& aAbBbBaAaAb (?:aA)*+b aAaAaAaAaAb y $& aAaAaAaAaAb (aA)*+b aAaAaAaAaAb y $& aAaAaAaAaAb (aA|bB)*+b bBbBbBbBbBb y $& bBbBbBbBbBb (?:aA|bB)*+b bBaAbBbBaAb y $& bBaAbBbBaAb (?:aA){1,5}+b aAaAaAaAaAb y $& aAaAaAaAaAb (aA){1,5}+b aAaAaAaAaAb y $& aAaAaAaAaAb (aA|bB){1,5}+b bBaAbBaAbBb y $& bBaAbBaAbBb (?:aA|bB){1,5}+b aAbBaAbBbBb y $& aAbBaAbBbBb (?:aA)?+b aAb y $& aAb (aA)?+b aAb y $& aAb (aA|bB)?+b bBb y $& bBb (?:aA|bB)?+b bBb y $& bBb foo(?:aA)++(?:aA) fooaAaAaAaAaA n - fooaAaAaAaAaA foo(aA)++(aA) fooaAaAaAaAaA n - fooaAaAaAaAaA foo(aA|bB)++(aA|bB) foobBbBbBaAaA n - foobBbBbBaAaA foo(?:aA|bB)++(?:aA|bB) fooaAaAaAaAaA n - fooaAaAaAaAaA foo(?:aA)*+(?:aA) fooaAaAaAaAaA n - fooaAaAaAaAaA foo(aA)*+(aA) fooaAaAaAaAaA n - fooaAaAaAaAaA foo(aA|bB)*+(aA|bB) foobBaAbBaAaA n - foobBaAbBaAaA foo(?:aA|bB)*+(?:aA|bB) fooaAaAbBbBaA n - fooaAaAbBbBaA foo(?:aA){1,5}+(?:aA) fooaAaAaAaAaA n - fooaAaAaAaAaA foo(aA){1,5}+(aA) fooaAaAaAaAaA n - fooaAaAaAaAaA foo(aA|bB){1,5}+(aA|bB) fooaAbBbBaAaA n - fooaAbBbBaAaA foo(?:aA|bB){1,5}+(?:aA|bB) fooaAbBbBaAbB n - fooaAbBbBaAbB foo(?:aA)?+(?:aA) fooaAb n - fooaAb foo(aA)?+(aA) fooaAb n - fooaAb foo(aA|bB)?+(aA|bB) foobBb n - foobBb foo(?:aA|bB)?+(?:aA|bB) fooaAb n - fooaAb foo(?:aA)++b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb foo(aA)++b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb foo(aA|bB)++b foobBaAbBaAbBb y $& foobBaAbBaAbBb foo(?:aA|bB)++b fooaAaAbBaAaAb y $& fooaAaAbBaAaAb foo(?:aA)*+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb foo(aA)*+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb foo(aA|bB)*+b foobBbBaAaAaAb y $& foobBbBaAaAaAb foo(?:aA|bB)*+b foobBaAaAbBaAb y $& foobBaAaAbBaAb foo(?:aA){1,5}+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb foo(aA){1,5}+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb foo(aA|bB){1,5}+b foobBaAaAaAaAb y $& foobBaAaAaAaAb foo(?:aA|bB){1,5}+b fooaAbBaAbBbBb y $& fooaAbBaAbBbBb foo(?:aA)?+b fooaAb y $& fooaAb foo(aA)?+b fooaAb y $& fooaAb foo(aA|bB)?+b foobBb y $& foobBb foo(?:aA|bB)?+b foobBb y $& foobBb ([^()]++|\([^()]*\))+ ((abc(ade)ufh()()x y $& abc(ade)ufh()()x round\(([^()]++)\) _I(round(xs * sz),1) y $1 xs * sz (foo[1x]|bar[2x]|baz[3x])+y foo1bar2baz3y y $1 baz3 (foo[1x]|bar[2x]|baz[3x])+y foo1bar2baz3y y $& foo1bar2baz3y (foo[1x]|bar[2x]|baz[3x])*y foo1bar2baz3y y $1 baz3 (foo[1x]|bar[2x]|baz[3x])*y foo1bar2baz3y y $& foo1bar2baz3y ([yX].|WORDS|[yX].|WORD)S WORDS y $1 WORD (WORDS|WORLD|WORD)S WORDS y $1 WORD ([yX].|WORDS|WORD|[xY].)S WORDS y $1 WORD (foo|fool|[zx].|money|parted)$ fool y $1 fool ([zx].|foo|fool|[zq].|money|parted|[yx].)$ fool y $1 fool (foo|fool|[zx].|money|parted)$ fools n - - ([zx].|foo|fool|[qx].|money|parted|[py].)$ fools n - - ([yX].|WORDS|[yX].|WORD)+S WORDS y $1 WORD (WORDS|WORLD|WORD)+S WORDS y $1 WORD ([yX].|WORDS|WORD|[xY].)+S WORDS y $1 WORD (foo|fool|[zx].|money|parted)+$ fool y $1 fool ([zx].|foo|fool|[zq].|money|parted|[yx].)+$ fool y $1 fool (foo|fool|[zx].|money|parted)+$ fools n - - ([zx].|foo|fool|[qx].|money|parted|[py].)+$ fools n - - (x|y|z[QW])+(longish|loquatious|excessive|overblown[QW])+ xyzQzWlongishoverblownW y $1-$2 zW-overblownW (x|y|z[QW])*(longish|loquatious|excessive|overblown[QW])* xyzQzWlongishoverblownW y $1-$2 zW-overblownW (x|y|z[QW]){1,5}(longish|loquatious|excessive|overblown[QW]){1,5} xyzQzWlongishoverblownW y $1-$2 zW-overblownW (x|y|z[QW])++(longish|loquatious|excessive|overblown[QW])++ xyzQzWlongishoverblownW y $1-$2 zW-overblownW (x|y|z[QW])*+(longish|loquatious|excessive|overblown[QW])*+ xyzQzWlongishoverblownW y $1-$2 zW-overblownW (x|y|z[QW]){1,5}+(longish|loquatious|excessive|overblown[QW]){1,5}+ xyzQzWlongishoverblownW y $1-$2 zW-overblownW a*(?!) aaaab n - - a*(*FAIL) aaaab n - - a*(*F) aaaab n - - (A(A|B(*ACCEPT)|C)D)(E) AB y $1 AB (A(A|B(*ACCEPT)|C)D)(E) ACDE y $1$2$3 ACDCE (a)(?:(?-1)|(?+1))(b) aab y $&-$1-$2 aab-a-b (a)(?:(?-1)|(?+1))(b) abb y $1-$2 a-b (a)(?:(?-1)|(?+1))(b) acb n - - (foo)(\g-2) foofoo y $1-$2 foo-foo (foo)(\g-2)(foo)(\g-2) foofoofoofoo y $1-$2-$3-$4 foo-foo-foo-foo (([abc]+) \g-1)(([abc]+) \g{-1}) abc abccba cba y $2-$4 abc-cba (a)(b)(c)\g1\g2\g3 abcabc y $1$2$3 abc # \k preceded by a literal /(?'n'foo) \k/ ..foo foo.. y $1 foo /(?'n'foo) \k/ ..foo foo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?foo) \k'n'/ ..foo foo.. y $1 foo /(?foo) \k'n'/ ..foo foo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?'a1'foo) \k'a1'/ ..foo foo.. yM $+{a1} foo miniperl cannot load Tie::Hash::NamedCapture /(?foo) \k/ ..foo foo.. yM $+{a1} foo miniperl cannot load Tie::Hash::NamedCapture /(?'_'foo) \k'_'/ ..foo foo.. yM $+{_} foo miniperl cannot load Tie::Hash::NamedCapture /(?<_>foo) \k<_>/ ..foo foo.. yM $+{_} foo miniperl cannot load Tie::Hash::NamedCapture /(?'_0_'foo) \k'_0_'/ ..foo foo.. yM $+{_0_} foo miniperl cannot load Tie::Hash::NamedCapture /(?<_0_>foo) \k<_0_>/ ..foo foo.. yM $+{_0_} foo miniperl cannot load Tie::Hash::NamedCapture /(?'0'foo) bar/ - c - Group name must start with a non-digit word character /(?<0>foo) bar/ - c - Group name must start with a non-digit word character /(?'12'foo) bar/ - c - Group name must start with a non-digit word character /(?<12>foo) bar/ - c - Group name must start with a non-digit word character /(?'1a'foo) bar/ - c - Group name must start with a non-digit word character /(?<1a>foo) bar/ - c - Group name must start with a non-digit word character /(?''foo) bar/ - c - Group name must start with a non-digit word character /(?<>foo) bar/ - c - Group name must start with a non-digit word character /foo \k'n'/ - c - Reference to nonexistent named group /foo \k/ - c - Reference to nonexistent named group /foo \k'a1'/ - c - Reference to nonexistent named group /foo \k/ - c - Reference to nonexistent named group /foo \k'_'/ - c - Reference to nonexistent named group /foo \k<_>/ - c - Reference to nonexistent named group /foo \k'_0_'/ - c - Reference to nonexistent named group /foo \k<_0_>/ - c - Reference to nonexistent named group /foo \k'0'/ - c - Group name must start with a non-digit word character /foo \k<0>/ - c - Group name must start with a non-digit word character /foo \k'12'/ - c - Group name must start with a non-digit word character /foo \k<12>/ - c - Group name must start with a non-digit word character /foo \k'1a'/ - c - Group name must start with a non-digit word character /foo \k<1a>/ - c - Group name must start with a non-digit word character /foo \k''/ - c - Group name must start with a non-digit word character /foo \k<>/ - c - Group name must start with a non-digit word character /(?as) (\w+) \k (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie /(?as) (\w+) \k{as} (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie /(?as) (\w+) \k'as' (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie /(?as) (\w+) \k{ as } (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie /(?as) (\w+) \k< as> (\w+)/ as easy as pie c - Group name must start with a non-digit word character # \g{...} with a name as the argument /(?'n'foo) \g{n}/ ..foo foo.. y $1 foo /(?'n'foo) \g{ n }/ ..foo foo.. y $1 foo /(?'n'foo) \g{n}/ ..foo foo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?foo) \g{n}/ ..foo foo.. y $1 foo /(?foo) \g{n}/ ..foo foo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?as) (\w+) \g{as} (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie # Python style named capture buffer stuff /(?Pfoo)(?P=n)/ ..foofoo.. y $1 foo /(?Pfoo)(?P=n)/ ..foofoo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?:(?Pfoo)|(?Pbar))(?P=n)/ ..barbar.. yM $+{n} bar miniperl cannot load Tie::Hash::NamedCapture /^(?P(?P.)((?P>PAL)|.?)(?P=CHAR))$/ madamimadam y $& madamimadam /^(?P(?P.)((?P>PAL)|.?)(?P=CHAR))$/ madamiamadam n - - /(?Pfoo) (?P=n)/ ..foo foo.. y $1 foo /(?Pfoo) (?P=n)/ ..foo foo.. yM $+{n} foo miniperl cannot load Tie::Hash::NamedCapture /(?Pas) (\w+) (?P=as) (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie #check that non identifiers as names are treated as the appropriate lookaround (?<=bar>)foo bar>foo y $& foo (?)foo bar>foo n - - (?<=bar>ABC)foo bar>ABCfoo y $& foo (?ABC)foo bar>ABCfoo n - - (?)foo bar>ABCfoo y $& foo (?ABC)foo bar>ABCfoo y $& ABCfoo (?<=abcd(?<=(aaaabcd))) ..aaaabcd.. y $1 aaaabcd (?=xy(?<=(aaxy))) ..aaxy.. y $1 aaxy (?=xy(?<=(aaxyz?))) ..aaxy.. y $1 aaxy X(\w+)(?=\s)|X(\w+) Xab y [$1-$2] [-ab] #check that branch reset works ok. (?|(a)) a y $1-$+-$^N a-a-a (?|a(.)b|d(.(o).)d|i(.)(.)j)(.) d!o!da y $1-$2-$3 !o!-o-a (?|a(.)b|d(.(o).)d|i(.)(.)j)(.) aabc y $1-$2-$3 a--c (?|a(.)b|d(.(o).)d|i(.)(.)j)(.) ixyjp y $1-$2-$3 x-y-p (?|(?|(a)|(b))|(?|(c)|(d))) a y $1 a (?|(?|(a)|(b))|(?|(c)|(d))) b y $1 b (?|(?|(a)|(b))|(?|(c)|(d))) c y $1 c (?|(?|(a)|(b))|(?|(c)|(d))) d y $1 d (.)(?|(.)(.)x|(.)d)(.) abcde y $1-$2-$3-$4-$5- b-c--e-- (\N)(?|(\N)(\N)x|(\N)d)(\N) abcde y $1-$2-$3-$4-$5- b-c--e-- (?|(?x)) x yM $+{foo} x miniperl cannot load Tie::Hash::NamedCapture (?|(?x)|(?y)) x yM $+{foo} x miniperl cannot load Tie::Hash::NamedCapture (?|(?y)|(?x)) x yM $+{foo} x miniperl cannot load Tie::Hash::NamedCapture (?)(?|(?x)) x yM $+{foo} x miniperl cannot load Tie::Hash::NamedCapture # Used to crash, because the last branch was ignored when the parens # were counted: (?|(b)|()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()(a)) a y $& a #Bug #41492 (?(DEFINE)(?(?&B)+)(?a))(?&A) a y $& a (?(DEFINE)(?(?&B)+)(?a))(?&A) aa y $& aa \x{100}?(??{""})xxx xxx y $& xxx foo(\R)bar foo\r\nbar y $1 \r\n foo(\R)bar foo\nbar y $1 \n foo(\R)bar foo\rbar y $1 \r foo(\R+)bar foo\r\n\x{85}\r\n\nbar y $1 \r\n\x{85}\r\n\n (\V+)(\R) foo\r\n\x{85}\r\n\nbar y $1-$2 foo-\r\n (\R+)(\V) foo\r\n\x{85}\r\n\nbar y $1-$2 \r\n\x{85}\r\n\n-b foo(\R)bar foo\x{85}bar y $1 \x{85} (\V)(\R) foo\x{85}bar y $1-$2 o-\x{85} (\R)(\V) foo\x{85}bar y $1-$2 \x{85}-b foo(\R)bar foo\r\nbar y $1 \r\n (\V)(\R) foo\r\nbar y $1-$2 o-\r\n (\R)(\V) foo\r\nbar y $1-$2 \r\n-b foo(\R)bar foo\r\nbar y $1 \r\n (\V)(\R) foo\r\nbar y $1-$2 o-\r\n (\R)(\V) foo\r\nbar y $1-$2 \r\n-b foo(\R)bar foo\rbar y $1 \r (\V)(\R) foo\rbar y $1-$2 o-\r (\R)(\V) foo\rbar y $1-$2 \r-b 0|\R??\n0 \n\n n - - - # GH17746: assertion failure foo(\v+)bar foo\r\n\x{85}\r\n\nbar y $1 \r\n\x{85}\r\n\n (\V+)(\v) foo\r\n\x{85}\r\n\nbar y $1-$2 foo-\r (\v+)(\V) foo\r\n\x{85}\r\n\nbar y $1-$2 \r\n\x{85}\r\n\n-b foo(\v)bar foo\x{85}bar y $1 \x{85} (\V)(\v) foo\x{85}bar y $1-$2 o-\x{85} (\v)(\V) foo\x{85}bar y $1-$2 \x{85}-b foo(\v)bar foo\rbar y $1 \r (\V)(\v) foo\rbar y $1-$2 o-\r (\v)(\V) foo\rbar y $1-$2 \r-b foo(\h+)bar foo\t\x{A0}bar y $1 \t\x{A0} (\H+)(\h) foo\t\x{A0}bar y $1-$2 foo-\t (\h+)(\H) foo\t\x{A0}bar y $1-$2 \t\x{A0}-b foo(\h)bar foo\x{A0}bar y $1 \x{A0} (\H)(\h) foo\x{A0}bar y $1-$2 o-\x{A0} (\h)(\H) foo\x{A0}bar y $1-$2 \x{A0}-b foo(\h)bar foo\tbar y $1 \t (\H)(\h) foo\tbar y $1-$2 o-\t (\h)(\H) foo\tbar y $1-$2 \t-b .*\z foo\n y -$&- -- \N*\z foo\n y -$&- -- .*\Z foo\n y -$&- -foo- \N*\Z foo\n y -$&- -foo- ^(?:(\d)x)?\d$ 1 y ${\(defined($1)?1:0)} 0 .*?(?:(\w)|(\w))x abx y $1-$2 b- 0{50} 000000000000000000000000000000000000000000000000000 y - - ^a?(?=b)b ab y $& ab # Bug #56690 ^a*(?=b)b ab y $& ab # Bug #56690 />\d+$ \n/ix >10\n y $& >10 />\d+$ \n/ix >1\n y $& >1 /\d+$ \n/ix >10\n y $& 10 />\d\d$ \n/ix >10\n y $& >10 />\d+$ \n/x >10\n y $& >10 # Two regressions in 5.8.x (only) introduced by change 30638 # Simplification of the test failure in XML::LibXML::Simple: /^\s*i.*?o\s*$/s io\n io y - - # As reported in #59168 by Father Chrysostomos: /(.*?)a(?!(a+)b\2c)/ baaabaac y $&-$1 baa-ba # [perl #60344] Regex lookbehind failure after an (if)then|else in perl 5.10 /\A(?(?=db2)db2|\D+)(?<$2> /^(foo|)bar$/ bar y <$&> /^(foo||baz)bar$/ bar y <$&> /^(foo||baz)bar$/ bazbar y <$1> /^(foo||baz)bar$/ foobar y <$1> /^(?:foo|)bar$/ bar y <$&> /^(?:foo||baz)bar$/ bar y <$&> /^(?:foo||baz)bar$/ bazbar y <$&> /^(?:foo||baz)bar$/ foobar y <$&> /^(?i:foo|)bar$/ bar y <$&> /^(?i:foo||baz)bar$/ bar y <$&> /^(?i:foo||baz)bar$/ bazbar y <$&> /^(?i:foo||baz)bar$/ foobar y <$&> # $^N, $+ on backtrackracking # BRANCH ^(.)(?:(..)|B)[CX] ABCDE y $^N-$+ A-A - # TRIE ^(.)(?:BC(.)|B)[CX] ABCDE y $^N-$+ A-A - # CURLYX ^(.)(?:(.)+)*[BX] ABCDE y $^N-$+ A-A - # CURLYM ^(.)(BC)* ABCDE y $^N-$+ BC-BC - ^(.)(BC)*[BX] ABCDE y $^N-$+ A-A - # CURLYN ^(.)(B)*.[DX] ABCDE y $^N-$+ B-B - ^(.)(B)*.[CX] ABCDE y $^N-$+ A-A - # using 'return' in code blocks ^(A)(?{"xyz"})B$ AB y $1-$^R A-xyz - ^(A)(?{return "xyz"})B$ AB y $1-$^R A-xyz - ^(A)((??{"xyz"}))$ Axyz y $1-$2 A-xyz - ^(A)((??{return "xyz"}))$ Axyz y $1-$2 A-xyz - ^(A)((?(?{1})abc|xyz))$ Aabc y $1-$2 A-abc - ^(A)((?(?{0})abc|xyz))$ Axyz y $1-$2 A-xyz - ^(A)((?(?{return 1})abc|xyz))$ Aabc y $1-$2 A-abc - ^(A)((?(?{return 0})abc|xyz))$ Axyz y $1-$2 A-xyz - # using 'return' in code blocks with additional scopes to pop ^(A)(?{ { 1; return "xyz"} })B$ AB y $1-$^R A-xyz - ^(A)((??{ { 1; return "xyz" } }))$ Axyz y $1-$2 A-xyz - ^(A)((?(?{ { 1; return 1 } })abc|xyz))$ Aabc y $1-$2 A-abc - ^(A)((?(?{ { 1; return 0 } })abc|xyz))$ Axyz y $1-$2 A-xyz - # pattern modifier flags should propagate into returned (??{}) pattern # p,d,l not tested /^(a)((??{"b"}))$/i AB y $1-$2 A-B - /^(A)((??{'B$'}))(\nC)$/m AB\nC y $1-$2-$3 A-B-\nC - /^(A)((??{'.'}))(B)$/s A\nB y $1-$2-$3 A-\n-B - /^(A) ((??{' .'}))(B)$/x A B y $1-$2-$3 A- -B - /^((??{'\d'}))$/a \x{660} n - - /^(??{"s"})$/i \x{17F} y - - /^(??{"s"})$/ia \x{17F} y - - /^(??{"s"})$/iaa \x{17F} n - - /^(??{'\w'})$/u \x{AA} y - - # #113670 ensure any captures to the right are invalidated when CURLY # and CURLYM backtrack ^(?:(X)?(\d)|(X)?(\d\d))$ X12 y $1-$2-$3-$4 --X-12 ^(?:(XX)?(\d)|(XX)?(\d\d))$ XX12 y $1-$2-$3-$4 --XX-12 # rt 113770 \A(?>\[(?:(?:)(?:R){1}|T|V?|A)\])\z [A] y $& [A] # rt 114068 /( [^z] $ [^z]+)/xm aa\nbb\ncc\n y $1 a\nbb\ncc\n # [perl #114220] /[\h]/ \x{A0} y $& \xA0 /[\H]/ \x{BF} y $& \xBF /[\H]/ \x{A0} n - - /[\H]/ \x{A1} y $& \xA1 [^\n]+ \nb y $& b [^\n]+ a\n y $& a # /a has no effect on properties (?a:\p{Any}) \x{100} y $& \x{100} (?aa:\p{Any}) \x{100} y $& \x{100} \w \x{200C} y $& \x{200C} \W \x{200C} n - - \w \x{200D} y $& \x{200D} \W \x{200D} n - - /^(?d:\xdf|_)*_/i \x{17f}\x{17f}_ y $& \x{17f}\x{17f}_ # # check that @-, @+ count chars, not bytes; especially if beginning of # string is not copied (\x{100}) \x{2000}\x{2000}\x{2000}\x{100} y $-[0]:$-[1]:$+[0]:$+[1] 3:3:4:4 ^\R{2}$ \r\n\r\n y $& \r\n\r\n /^\D{11}/a \x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF} n - - /^\S{11}/a \x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF} n - - /^\W{11}/a \x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF}\x{10FFFF} n - - # [ perl #114272] \Vn \xFFn/ y $& \xFFn # These mostly exercise various paths in the optimizer /(?l:a?\w)/ b y $& b /(?l:a?\D)/ b y $& b ^_?[^\S_0-9]\w*\z \t y $& \t m?^xy\?$? xy? y $& xy? a?\X a\x{100} y $& a\x{100} a?\R a\n y $& a\n ^a?\N$ a\n y $& a \N?a \na y $& a /\s?\s/l \t y $& \t /\s?\d/l 3 y $& 3 /\s?\S/l A y $& A # check we have the right utf8ness as we switch back and forth between # patterns ^(\x{100}|a)(??{ qr/.?\xF7/d}) a_\xF7 y - - # [perl #118375] /(a|(bc)){0,0}?xyz/ xyz y $& xyz /( a | ( bc ) ) {0,0} ? xyz/x xyz y $& xyz /(a|(bc)){0,0}+xyz/ xyz y $& xyz /( a | ( bc ) ) {0,0} + xyz/x xyz y $& xyz (A(*PRUNE)B|A(*PRUNE)C) AC n - - (A(*PRUNE)B|A(*PRUNE)D|A(*PRUNE)C) AC n - - (A(*PRUNE)B|A(*PRUNE)C|A(*PRUNE)D) AC n - - ((A(*PRUNE)B|A(*PRUNE)C)) AC n - - ((A(*PRUNE)B|A(*PRUNE)D|A(*PRUNE)C)) AC n - - ((A(*PRUNE)B|A(*PRUNE)C|A(*PRUNE)D)) AC n - - A+?(*THEN)BC AAABC y $& ABC A+?(*PRUNE)BC AAABC y $& ABC A+(*THEN)BC AAABC y $& AAABC A+(*PRUNE)BC AAABC y $& AAABC A+?(*THEN)BC(?{}) AAABC y $& ABC A+?(*PRUNE)BC(?{}) AAABC y $& ABC A+(*THEN)BC(?{}) AAABC y $& AAABC A+(*PRUNE)BC(?{}) AAABC y $& AAABC /[#]/ a#b y $& # /[#]b/ a#b y $& #b /[#]/x a#b y $& # /[#]b/x a#b y $& #b /[#](?{})/x a#b y $& # /[#](??{'b'})/x a#b y $& #b /(?#)(?{})b/ a#b y $& b /(?#)(??{'b'})/ a#b y $& b /[(?#](?{})b/ a#b y $& #b /[(?#](??{'b'})/ a#b y $& #b /(?#)(?{})b/x a#b y $& b /(?#)(??{'b'})/x a#b y $& b # RT #119069: PCRE regression test: no segfault ^(?=(a)){0}b(?1) back y $& ba # RT #119071: PCRE regression test: No warning of infinite regression (?:(a(*SKIP)b)){0}(?:(?1)|ac) x n - - # RT #119073: PCRE regression test: {0} => NOTHING optimization (?1)(?:(b)){0} b y $& b # RT #120041 ^A*\z y $& /\N* /x ab y $& ab # Under /x was ignoring the '*' /\N (?#comment) * /x ab y $& ab # likewise # RT #120600: Variable length lookbehind is not variable (?a)(?(?=(?&W))(?<=(?&W)))(?&BB) aa y $& a # test repeated recursive patterns # This group is from RT #121144 /^\S+=/d \x{3a3}=\x{3a0} y $& \x{3a3}= /^\S+=/u \x{3a3}=\x{3a0} y $& \x{3a3}= # utf8 cache length panics \x{100}[xy]\x{100}{2} \x{100}y\x{100}\x{100} y $& \x{100}y\x{100}\x{100} \x{100}a{2,3} \x{100}aaa y $& \x{100}aaa ^x?abc?de abcde y $& abcde '(?-m:^abc)'m abcde y $& abc '(?-m:^abc)'m x\nabcde n - - # RT #121248 - segfault /^[+]([^(]+)$/mi li n - - # RT #121299 - Inconsistent behavior with backreferences nested inside subpattern references /(.)((o)\1)(?2)/ fofof y $2 of /(.)(?2)((\1)(?4)(\1))/ fffffff y $1 f /(.)(?2)((.)(?4)(\1))/ foffoff y $2 off /^(.\2?)(.)(?1)$/ abcb y $2 b /^(.\1?)(?1)$/ aba y $1 a /^ (\3(?2)\3)? ((.)) (?1) $/x aaba y $2 a /^ (a|\3(?1)\2|(?2)) ((b|c)(?4)?) (?1) (d(?1)) $/x abbcdcabbda y $2 b # RT #121321 - perl 5.19.10 infinite loops on backrefs > number of capture buffers (npar) where npar>9 /(a)\2/ a\2 c - Reference to nonexistent group in regex /(a)(b)\3/ ab\3 c - Reference to nonexistent group in regex /(a)(b)(c)\4/ abc\4 c - Reference to nonexistent group in regex /(a)(b)(c)(d)\5/ abcd\5 c - Reference to nonexistent group in regex /(a)(b)(c)(d)(e)\6/ abcde\6 c - Reference to nonexistent group in regex /(a)(b)(c)(d)(e)(f)\7/ abcdef\7 c - Reference to nonexistent group in regex /(a)(b)(c)(d)(e)(f)(g)(h)(i)\10/ abcdefghi\10 y $& abcdefghi\10 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)\11/ abcdefghij\11 y $& abcdefghij\11 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12/ abcdefghijk\12 y $& abcdefghijk\12 /(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12\13\14/ abcdefghijk\12\13\14 y $& abcdefghijk\12\13\14 \d<(.*?)> a<> n - - [bcd].{2,3}aaaa XbXaaaaa y - - [bcd].{2,3}aaaa Xb\x{100}aaaaa y - - '\Awibble\z'm wibble y - - /(alias|status)es$/i Statuses y $1 Status # [perl #121778] /( (?&solution) | % ) \Z (?(DEFINE) (?7\%\ solution) )/x 7% solution y $1 7% solution # [perl #122890] (.)(?{$~=$^N}) \x{100} y $~ \x{100} # [perl #123135] /[a-z]/i \N{KELVIN SIGN} y $& \N{KELVIN SIGN} /[A-Z]/ia \N{KELVIN SIGN} y $& \N{KELVIN SIGN} /[A-Z]/iaa \N{KELVIN SIGN} n - - /[A-Z]/i \N{LATIN SMALL LETTER LONG S} y $& \N{LATIN SMALL LETTER LONG S} # RT #123840: these used to hang in re_intuit_start /w\zxy?\z/i \x{100}a\x{80}a n - - /w\z\R\z/i \x{100}a\x{80}a n - - /(a+){1}+a/ aaa n - - # [perl #125825] ^((?(?=x)xb|ya)z) xbz y $1 xbz ^((?(?=x)xb|ya)z) yaz y $1 yaz ^((?(?!y)xb|ya)z) xbz y $1 xbz ^((?(?!y)xb|ya)z) yaz y $1 yaz ^((?(?!)xb|ya)z) xbz n - - ^((?(?!)xb|ya)z) yaz y $1 yaz # [perl-126222] foo(*ACCEPT:foo) foo y $::REGMARK foo (foo(*ACCEPT:foo)) foo y $::REGMARK foo A(*FAIL:foo)[BC] A n $::REGERROR foo \N(?#comment){SPACE} A c - Missing braces on \\N{} ab(?#Comment){2}c abbc y $& abbc \p A A c - Character following \\p must be '{' or a single-character Unicode property name # [perl #126187 \P:A A c - Character following \\P must be '{' or a single-character Unicode property name \p^ A c - Character following \\p must be '{' or a single-character Unicode property name \PU A c - Can't find Unicode property definition \"U\" (?i - c - Sequence (?... not terminated (?a-x - c - Sequence (?... not terminated .{1}?? - c - Nested quantifiers .{1}?+ - c - Nested quantifiers (?:.||)(?|)000000000@ 000000000@ y $& 000000000@ # [perl #126405] aa$|a(?R)a|a aaa y $& aaa # [perl 128420] recursive matches (?:\1|a)([bcd])\1(?:(?R)|e)\1 abbaccaddedcb y $& abbaccaddedcb # [perl 128420] recursive match with backreferences AB\s+\x{100} AB \x{100}X y - - \b\z0*\x{100} .\x{100} n - - # [perl #129350] crashed in intuit_start (.*?(a(a)|i(i))n) riiaan y $2-$3-$4-$1 aa-a--riiaan # Jump trie capture buffer issue [perl #129897] (^(?:(\d)x)?\d$) 1 y [$1-$2] [1-] # make sure that we reset capture buffers properly (from regtry) (X{2,}[-X]{1,4}){3,}X{2,} XXX-XXX-XXX-- n - - # [perl #130307] /[a b]/x \N{SPACE} yS $& # Note a space char here /[a b]/xx \N{SPACE} n - - /[a\ b]/xx \N{SPACE} y $& # Note a space char here /[ ^ a b ]/xx a n - - /[ ^ a b ]/xx b n - - /[ ^ a b ]/xx A y $& A /(?x:[a b])/xx \N{SPACE} yS $& # Note a space char here /(?xx:[a b])/x \N{SPACE} n - - /(?x)[a b]/xx \N{SPACE} yS $& # Note a space char here /(?xx)[a b]/x \N{SPACE} n - - /(?-x:[a b])/xx \N{SPACE} yS $& # Note a space char here ^a?bcd\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff ABCDEFGHIJKLMNOPQRSTUVWXYZ n - - # [perl #132187] for valgrind's benefit ^Xaaa?Xaa aaa\x{400000} n - - # [perl #132552] for valgrind's benefit ([[:ascii:]]+)\x81 a\x80b\x81 y $& b\x81 [[:^ascii:]]+b \x80a\x81b y $& \x81b [[:^ascii:]]+b \x80a\x81\x{100}b y $& \x81\x{100}b /\A\x80+\z/ \x80\x80\x80\x80\x80\x80\x80\x80\x80 y $& \x80\x80\x80\x80\x80\x80\x80\x80\x80 # [perl #132900] ^(\d+)*?4X$ 1234X y $1 123 # perl #131648 (?il)\x{100}|\x{100}|\x{FE} \xFE y $& \xFE \A([\x00-\x7F]+)(.*)\z \007\011\012 y $& \007\011\012 # [perl #133311] (?:(?^:(?{1}))[^0-9]) : y $& : # [perl #133348] /[\xdf-/i - ca - Invalid [] range # [perl #133620] likely only fails under valgrind /[\x59-/i - ce - Unmatched [ # [perl #133620] likely only fails under valgrind /\1a(b)/ bab n - - # This compiles but fails to match as \1 is not set when parsed /(?iu)(?<=\xdf)hbase/ sshbase y $& hbase /\x{30c3}?[\x{30a2}\x{30a4}\x{30a6}\x{30a8}\x{30aa}-\x{30e2}\x{30e4}\x{30e6}\x{30e8}-\x{30f4}](?:[\x{30e3}\x{30e5}\x{30e7}\x{30a1}\x{30a3}\x{30a5}\x{30a7}\x{30a9}])?\x{30fc}?\x{30f3}?/ \x{30de}\x{30fc}\x{30af}\x{30b5}\x{30fc}\x{30d3}\x{30b9} y $& \x{30de}\x{30fc} # part of [perl #133942 /[\x{3041}-\x{3093}]+/ \x{6f22}\x{5b57}\x{3001}\x{30ab}\x{30bf}\x{30ab}\x{30ca}\x{3001}\x{3072}\x{3089}\x{304c}\x{306a}\x{306e}\x{5165}\x{3063}\x{305f}String y $& \x{3072}\x{3089}\x{304c}\x{306a}\x{306e} # [perl #133978] /(?:0)|(?:)(?:[1-9])/ q0 y $& 0 # [https://github.com/Perl/perl5/issues/17372] /\x{_1_0000}/ \x{10000} y $& \x{10000} # khw doesn't like leading underscores, but don't rmv them accidentally /\o{_1_0000}/ \o{10000} y $& \o{10000} /(?iaax:A? \K +)/ African_Feh y $& /(?iaa:A?\K+)/ African_Feh y $& /(?iaa:A?\K*)/ African_Feh y $& ^((\w|<(\s)*(?1)(?3)*>)(?:(?3)*\+(?3)*(?2))*)(?3)*\+ a + b + y $1 a + b # [GH #18096] ^((\w|<(\s)*(?1)(?3)*>)(?:(?3)*\+(?3)*(?2))*)(?3)*\+ a + + c y $1 a + # [GH #18096] /0?\xdf\xdf\xdf\xdfs\o{500}|/i \o{600} y $& # [GH #18451] /^a{,2}$/ y # 0 or more /^a{,2}$/ a y $& a /^a{,2}$/ aa y $& aa /^a{,2}$/ aaa n - - /.{, 2 }/ a y $& a /[x]{, 2}/ x y $& x /\p{Latin}{ , 2 }/ a y $& a /(?=foo)(?<=a|ab)/ abfoo y - - - # Positive variable length lookbehind GH #19168 /(?=foo)(?<=a|ab)/ adfoo n - - - # Positive variable length lookbehind GH #19168 /(?=foo)(?<=a|ab)/ cafoo y - - - # Positive variable length lookbehind GH #19168 /(?=foo)(?C))D)(E)/ ABCDE y $1-$2 AB-B - # ACCEPT with SUSPEND in pattern /(A(A|B(*ACCEPT)|(?>C))D)(E)/ ABCDE y $& AB - # ACCEPT with SUSPEND in pattern /(A(A|B(*ACCEPT)|C(?<=C))D)(E)/ ABCDE y $1-$2 AB-B - # ACCEPT with IFMATCH in pattern /(A(A|B(*ACCEPT)|C(?<=C))D)(E)/ ABCDE y $& AB - # ACCEPT with IFMATCH in pattern /(A(A|B(*ACCEPT)|C(?(?:[ab]|[cd](*ACCEPT)|[ef])g))(?&a)(?&a)/ cc y $& cc - # ACCEPT in GOSUB /(?(DEFINE)(?(?:[ab]|[cd](*ACCEPT)|[ef])g))(?&a)(?&a)/ agag y $& agag - # (not) ACCEPT in GOSUB /(?(DEFINE)(?(?:[ab]|[cd](*ACCEPT)|[ef])g))(?&a)(?&a)/ agcq y $& agc - # (not) ACCEPT in GOSUB /(?<=([cd](*ACCEPT)|x)gggg)blrph/ cblrph y $&-$1 blrph-c - # ACCEPT in IFMATCH var pos lookbehind /(?<=([cd](*ACCEPT)|x)gggg)blrph/ dblrph y $&-$1 blrph-d - # ACCEPT in IFMATCH var pos lookbehind /(?<=([cd](*ACCEPT)|x)gggg)blrph/ xggggblrph y $&-$1 blrph-x - # (not) ACCEPT in IFMATCH var pos lb /(?$&< >< - # Test minlen for ACCEPT /(?:a?(*ACCEPT))b/ a y >$&< >a< - # Test minlen for ACCEPT /(?:a?(*ACCEPT))b/ b y >$&< >< - # Test minlen for ACCEPT /a?(*ACCEPT)b/ x y >$&< >< - # Test minlen for ACCEPT /a?(*ACCEPT)b/ a y >$&< >a< - # Test minlen for ACCEPT /a?(*ACCEPT)b/ b y >$&< >< - # Test minlen for ACCEPT / (A (*ACCEPT) | BC){2} D{0,4}/x A y $1 A - # ACCEPT optimizer check \p{nv=-0} \x{660} y $& \x{660} (?:a|xx){0,4}?b aaaaab y $& aaaab # Bug is GH #8369; test is GH #19781 # Keep these lines at the end of the file # pat string y/n/etc expr expected-expr skip-reason comment # vim: softtabstop=0 noexpandtab