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# This set of tests is not Perl-compatible. It checks on special features# of PCRE2's API, error diagnostics, and the compiled code of some patterns.# It also checks the non-Perl syntax that PCRE2 supports (Python, .NET,# Oniguruma). There are also some tests where PCRE2 and Perl differ,# either because PCRE2 can't be compatible, or there is a possible Perl# bug.
# NOTE: This is a non-UTF set of tests. When UTF support is needed, use# test 5.
#forbid_utf#newline_default lf any anycrlf
# Test binary zeroes in the pattern
# /a\0B/ where 0 is a binary zero/61 5c 00 62/B,hex a\x{0}b
# /a0b/ where 0 is a binary zero/61 00 62/B,hex a\x{0}b
# /(?#B0C)DE/ where 0 is a binary zero/28 3f 23 42 00 43 29 44 45/B,hex DE
/(a)b|/I
/abc/I abc defabc abc\=anchored\= Expect no match defabc\=anchored ABC
/^abc/I abc abc\=anchored\= Expect no match defabc defabc\=anchored
/a+bc/I
/a*bc/I
/a{3}bc/I
/(abc|a+z)/I
/^abc$/I abc\= Expect no match def\nabc
/ab\idef/
/(?X)ab\idef/
/x{5,4}/
/z{65536}/
/[abcd/
/[\B]/B
/[\R]/B
/[\X]/B
/[z-a]/
/^*/
/(abc/
/(?# abc/
/(?z)abc/
/.*b/I
/.*?b/I
/cat|dog|elephant/I this sentence eventually mentions a cat this sentences rambles on and on for a while and then reaches elephant
/cat|dog|elephant/I this sentence eventually mentions a cat this sentences rambles on and on for a while and then reaches elephant
/cat|dog|elephant/Ii this sentence eventually mentions a CAT cat this sentences rambles on and on for a while to elephant ElePhant
/a|[bcd]/I
/(a|[^\dZ])/I
/(a|b)*[\s]/I
/(ab\2)/
/{4,5}abc/
/(a)(b)(c)\2/I abcb abcb\=ovector=0 abcb\=ovector=1 abcb\=ovector=2 abcb\=ovector=3 abcb\=ovector=4
/(a)bc|(a)(b)\2/I abc abc\=ovector=0 abc\=ovector=1 abc\=ovector=2 aba aba\=ovector=0 aba\=ovector=1 aba\=ovector=2 aba\=ovector=3 aba\=ovector=4
/abc$/I,dollar_endonly abc\= Expect no match abc\n abc\ndef
/(a)(b)(c)(d)(e)\6/
/the quick brown fox/I the quick brown fox this is a line with the quick brown fox
/the quick brown fox/I,anchored the quick brown fox\= Expect no match this is a line with the quick brown fox
/ab(?z)cd/
/^abc|def/I abcdef abcdef\=notbol
/.*((abc)$|(def))/I defabc defabc\=noteol
/)/
/a[]b/
/[^aeiou ]{3,}/I co-processors, and for
/<.*>/I abc<def>ghi<klm>nop
/<.*?>/I abc<def>ghi<klm>nop
/<.*>/I,ungreedy abc<def>ghi<klm>nop
/(?U)<.*>/I abc<def>ghi<klm>nop
/<.*?>/I,ungreedy abc<def>ghi<klm>nop
/={3,}/I,ungreedy abc========def
/(?U)={3,}?/I abc========def
/(?<!bar|cattle)foo/I foo catfoo\= Expect no match the barfoo and cattlefoo
/abc(?<=a+)b/
/(?<!(foo)a\1)bar/
/(?i)abc/I
/(a|(?m)a)/I
/(?i)^1234/I
/(^b|(?i)^d)/I
/(?s).*/I
/[abcd]/I
/(?i)[abcd]/I
/(?m)[xy]|(b|c)/I
/(^a|^b)/Im
/(?i)(^a|^b)/Im
/(a)(?(1)a|b|c)/
/(?(?=a)a|b|c)/
/(?(1a)/
/(?(1a))/
/(?(?i))/
/(?(abc))/
/(?(?<ab))/
/((?s)blah)\s+\1/I
/((?i)blah)\s+\1/I
/((?i)b)/IB
/(a*b|(?i:c*(?-i)d))/I
/a$/I a a\n\= Expect no match a\=noteol a\n\=noteol
/a$/Im a a\n a\n\=noteol\= Expect no match a\=noteol
/\Aabc/Im
/^abc/Im
/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/I aaaaabbbbbcccccdef
/(?<=foo)[ab]/I
/(?<!foo)(alpha|omega)/I
/(?!alphabet)[ab]/I
/(?<=foo\n)^bar/Im foo\nbarbar\= Expect no match rhubarb barbell abc\nbarton
/^(?<=foo\n)bar/Im foo\nbarbar\= Expect no match rhubarb barbell abc\nbarton
/(?>^abc)/Im abc def\nabc\= Expect no match defabc
/(?<=ab(c+)d)ef/
/(?<=ab(?<=c+)d)ef/
/The next three are in testinput2 because they have variable length branches/
/(?<=bullock|donkey)-cart/I the bullock-cart a donkey-cart race\= Expect no match cart horse-and-cart
/(?<=ab(?i)x|y|z)/I
/(?>.*)(?<=(abcd)|(xyz))/I alphabetabcd endingxyz
/(?<=ab(?i)x(?-i)y|(?i)z|b)ZZ/I abxyZZ abXyZZ ZZZ zZZ bZZ BZZ\= Expect no match ZZ abXYZZ zzz bzz
/(?<!(foo)a)bar/I bar foobbar\= Expect no match fooabar
# Perl does not fail these two for the final subjects.
/^(xa|=?\1a){2}$/ xa=xaa\= Expect no match xa=xaaa
/^(xa|=?\1a)+$/ xa=xaa\= Expect no match xa=xaaa
# These are syntax tests from Perl 5.005
/a[b-a]/
/a[]b/
/a[/
/*a/
/(*)b/
/abc)/
/(abc/
/a**/
/)(/
/\1/
/\2/
/(a)|\2/
/a[b-a]/Ii
/a[]b/Ii
/a[/Ii
/*a/Ii
/(*)b/Ii
/abc)/Ii
/(abc/Ii
/a**/Ii
/)(/Ii
/:(?:/
/(?<%)b/
/a(?{)b/
/a(?{{})b/
/a(?{}})b/
/a(?{"{"})b/
/a(?{"{"}})b/
/(?(1?)a|b)/
/[a[:xyz:/
/(?<=x+)y/
/a{37,17}/
/abc/\
/abc/\i
/(a)bc(d)/I abcd abcd\=copy=2 abcd\=copy=5
/(.{20})/I abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz\=copy=1 abcdefghijklmnopqrstuvwxyz\=get=1
/(.{15})/I abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz\=copy=1,get=1
/(.{16})/I abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz\=copy=1,get=1,getall
/^(a|(bc))de(f)/I adef\=get=1,get=2,get=3,get=4,getall bcdef\=get=1,get=2,get=3,get=4,getall adefghijk\=copy=0
/^abc\00def/I abc\00def\=copy=0,getall
/word ((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+)((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+)?)?)?)?)?)?)?)?)?otherword/I
/.*X/IB
/.*X/IBs
/(.*X|^B)/IB
/(.*X|^B)/IBs
/(?s)(.*X|^B)/IB
/(?s:.*X|^B)/IB
/\Biss\B/I,aftertext Mississippi
/iss/I,aftertext,altglobal Mississippi
/\Biss\B/I,aftertext,altglobal Mississippi
/\Biss\B/Ig,aftertext Mississippi\= Expect no match Mississippi\=anchored
/(?<=[Ms])iss/Ig,aftertext Mississippi
/(?<=[Ms])iss/I,aftertext,altglobal Mississippi
/^iss/Ig,aftertext ississippi
/.*iss/Ig,aftertext abciss\nxyzisspqr
/.i./Ig,aftertext Mississippi Mississippi\=anchored Missouri river Missouri river\=anchored
/^.is/Ig,aftertext Mississippi
/^ab\n/Ig,aftertext ab\nab\ncd
/^ab\n/Igm,aftertext ab\nab\ncd
/^/gm,newline=any a\rb\nc\r\nxyz\=aftertext
/abc/I
/abc|bac/I
/(abc|bac)/I
/(abc|(c|dc))/I
/(abc|(d|de)c)/I
/a*/I
/a+/I
/(baa|a+)/I
/a{0,3}/I
/baa{3,}/I
/"([^\\"]+|\\.)*"/I
/(abc|ab[cd])/I
/(a|.)/I
/a|ba|\w/I
/abc(?=pqr)/I
/...(?<=abc)/I
/abc(?!pqr)/I
/ab./I
/ab[xyz]/I
/abc*/I
/ab.c*/I
/a.c*/I
/.c*/I
/ac*/I
/(a.c*|b.c*)/I
/a.c*|aba/I
/.+a/I
/(?=abcda)a.*/I
/(?=a)a.*/I
/a(b)*/I
/a\d*/I
/ab\d*/I
/a(\d)*/I
/abcde{0,0}/I
/ab\d+/I
/a(?(1)b)(.)/I
/a(?(1)bag|big)(.)/I
/a(?(1)bag|big)*(.)/I
/a(?(1)bag|big)+(.)/I
/a(?(1)b..|b..)(.)/I
/ab\d{0}e/I
/a?b?/I a b ab \\= Expect no match \=notempty
/|-/I abcd -abc ab-c\=notempty\= Expect no match abc\=notempty
/^.?abcd/I
/\( # ( at start (?: # Non-capturing bracket (?>[^()]+) # Either a sequence of non-brackets (no backtracking) | # Or (?R) # Recurse - i.e. nested bracketed string )* # Zero or more contents \) # Closing ) /Ix (abcd) (abcd)xyz xyz(abcd) (ab(xy)cd)pqr (ab(xycd)pqr () abc () 12(abcde(fsh)xyz(foo(bar))lmno)89\= Expect no match abcd abcd) (abcd
/\( ( (?>[^()]+) | (?R) )* \) /Igx (ab(xy)cd)pqr 1(abcd)(x(y)z)pqr
/\( (?: (?>[^()]+) | (?R) ) \) /Ix (abcd) (ab(xy)cd) (a(b(c)d)e) ((ab))\= Expect no match ()
/\( (?: (?>[^()]+) | (?R) )? \) /Ix () 12(abcde(fsh)xyz(foo(bar))lmno)89
/\( ( (?>[^()]+) | (?R) )* \) /Ix (ab(xy)cd)
/\( ( ( (?>[^()]+) | (?R) )* ) \) /Ix (ab(xy)cd)
/\( (123)? ( ( (?>[^()]+) | (?R) )* ) \) /Ix (ab(xy)cd) (123ab(xy)cd)
/\( ( (123)? ( (?>[^()]+) | (?R) )* ) \) /Ix (ab(xy)cd) (123ab(xy)cd)
/\( (((((((((( ( (?>[^()]+) | (?R) )* )))))))))) \) /Ix (ab(xy)cd)
/\( ( ( (?>[^()<>]+) | ((?>[^()]+)) | (?R) )* ) \) /Ix (abcd(xyz<p>qrs)123)
/\( ( ( (?>[^()]+) | ((?R)) )* ) \) /Ix (ab(cd)ef) (ab(cd(ef)gh)ij)
/^[[:alnum:]]/IB
/^[[:^alnum:]]/IB
/^[[:alpha:]]/IB
/^[[:^alpha:]]/IB
/[_[:alpha:]]/I
/^[[:ascii:]]/IB
/^[[:^ascii:]]/IB
/^[[:blank:]]/IB
/^[[:^blank:]]/IB
/[\n\x0b\x0c\x0d[:blank:]]/I
/^[[:cntrl:]]/IB
/^[[:digit:]]/IB
/^[[:graph:]]/IB
/^[[:lower:]]/IB
/^[[:print:]]/IB
/^[[:punct:]]/IB
/^[[:space:]]/IB
/^[[:upper:]]/IB
/^[[:xdigit:]]/IB
/^[[:word:]]/IB
/^[[:^cntrl:]]/IB
/^[12[:^digit:]]/IB
/^[[:^blank:]]/IB
/[01[:alpha:]%]/IB
/[[.ch.]]/I
/[[=ch=]]/I
/[[:rhubarb:]]/I
/[[:upper:]]/Ii A a
/[[:lower:]]/Ii A a
/((?-i)[[:lower:]])[[:lower:]]/Ii ab aB\= Expect no match Ab AB
/[\200-\110]/I
/^(?(0)f|b)oo/I
# This one's here because of the large output vector needed
/(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\w+)\s+(\270)/I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 ABC ABC\=ovector=300
# This one's here because Perl does this differently and PCRE2 can't at present
/(main(O)?)+/I mainmain mainOmain
# These are all cases where Perl does it differently (nested captures)
/^(a(b)?)+$/I aba
/^(aa(bb)?)+$/I aabbaa
/^(aa|aa(bb))+$/I aabbaa
/^(aa(bb)??)+$/I aabbaa
/^(?:aa(bb)?)+$/I aabbaa
/^(aa(b(b))?)+$/I aabbaa
/^(?:aa(b(b))?)+$/I aabbaa
/^(?:aa(b(?:b))?)+$/I aabbaa
/^(?:aa(bb(?:b))?)+$/I aabbbaa
/^(?:aa(b(?:bb))?)+$/I aabbbaa
/^(?:aa(?:b(b))?)+$/I aabbaa
/^(?:aa(?:b(bb))?)+$/I aabbbaa
/^(aa(b(bb))?)+$/I aabbbaa
/^(aa(bb(bb))?)+$/I aabbbbaa
# ----------------
/#/IBx
/a#/IBx
/[\s]/IB
/[\S]/IB
/a(?i)b/IB ab aB\= Expect no match AB
/(a(?i)b)/IB ab aB\= Expect no match AB
/ (?i)abc/IBx
/#this is a comment (?i)abc/IBx
/123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890/IB
/\Q123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890/IB
/\Q\E/IB \
/\Q\Ex/IB
/ \Q\E/IB
/a\Q\E/IB abc bca bac
/a\Q\Eb/IB abc
/\Q\Eabc/IB
/x*+\w/IB\= Expect no match xxxxx
/x?+/IB
/x++/IB
/x{1,3}+/B,no_auto_possess
/x{1,3}+/Bi,no_auto_possess
/[^x]{1,3}+/B,no_auto_possess
/[^x]{1,3}+/Bi,no_auto_possess
/(x)*+/IB
/^(\w++|\s++)*$/I now is the time for all good men to come to the aid of the party\= Expect no match this is not a line with only words and spaces!
/(\d++)(\w)/I 12345a\= Expect no match 12345+
/a++b/I aaab
/(a++b)/I aaab
/(a++)b/I aaab
/([^()]++|\([^()]*\))+/I ((abc(ade)ufh()()x
/\(([^()]++|\([^()]+\))+\)/I (abc) (abc(def)xyz)\= Expect no match ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
/(abc){1,3}+/IB
/a+?+/I
/a{2,3}?+b/I
/(?U)a+?+/I
/a{2,3}?+b/I,ungreedy
/x(?U)a++b/IB xaaaab
/(?U)xa++b/IB xaaaab
/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/IB
/^x(?U)a+b/IB
/^x(?U)(a+)b/IB
/[.x.]/I
/[=x=]/I
/[:x:]/I
/\F/I
/\l/I
/\L/I
/\N{name}/I
/\u/I
/\U/I
/\N{4}/ abcdefg
/\N{,}/
/\N{25,ab}/
/a{1,3}b/ungreedy ab
/[/I
/[a-/I
/[[:space:]/I
/[\s]/IB
/[[:space:]]/IB
/[[:space:]abcde]/IB
/< (?: (?(R) \d++ | [^<>]*+) | (?R)) * >/Ix <> <abcd> <abc <123> hij> <abc <def> hij> <abc<>def> <abc<>\= Expect no match <abc
/8J\$WE\<\.rX\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b/IB
/\$\<\.X\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\<EjmhUZ\?\.akp2dF\>qmj\;2\}YWFdYx\.Ap\]hjCPTP\(n28k\+3\;o\&WXqs\/gOXdr\$\:r\'do0\;b4c\(f_Gr\=\"\\4\)\[01T7ajQJvL\$W\~mL_sS\/4h\:x\*\[ZN\=KLs\&L5zX\/\/\>it\,o\:aU\(\;Z\>pW\&T7oP\'2K\^E\:x9\'c\[\%z\-\,64JQ5AeH_G\#KijUKghQw\^\\vea3a\?kka_G\$8\#\`\*kynsxzBLru\'\]k_\[7FrVx\}\^\=\$blx\>s\-N\%j\;D\*aZDnsw\:YKZ\%Q\.Kne9\#hP\?\+b3\(SOvL\,\^\;\&u5\@\?5C5Bhb\=m\-vEh_L15Jl\]U\)0RP6\{q\%L\^_z5E\'Dw6X\b/IB
/(.*)\d+\1/I
/(.*)\d+/I
/(.*)\d+\1/Is
/(.*)\d+/Is
/(.*(xyz))\d+\2/I
/((.*))\d+\1/I abc123bc
/a[b]/I
/(?=a).*/I
/(?=abc).xyz/Ii
/(?=abc)(?i).xyz/I
/(?=a)(?=b)/I
/(?=.)a/I
/((?=abcda)a)/I
/((?=abcda)ab)/I
/()a/I
/(?:(?=.)|(?<!x))a/I
/(?(1)ab|ac)(.)/I
/(?(1)abz|acz)(.)/I
/(?(1)abz)(.)/I
/(?(1)abz)(1)23/I
/(a)+/I
/(a){2,3}/I
/(a)*/I
/[a]/I
/[ab]/I
/[ab]/I
/[^a]/I
/\d456/I
/\d456/I
/a^b/I
/^a/Im abcde xy\nabc\= Expect no match xyabc
/c|abc/I
/(?i)[ab]/I
/[ab](?i)cd/I
/abc(?C)def/I abcdef 1234abcdef\= Expect no match abcxyz abcxyzf
/abc(?C)de(?C1)f/I 123abcdef
/(?C1)\dabc(?C2)def/I 1234abcdef\= Expect no match abcdef
/(?C1)\dabc(?C2)def/I 1234abcdef\= Expect no match abcdef
/(?C255)ab/I
/(?C256)ab/I
/(?Cab)xx/I
/(?C12vr)x/I
/abc(?C)def/I \x83\x0\x61bcdef
/(abc)(?C)de(?C1)f/I 123abcdef 123abcdef\=callout_capture 123abcdefC-\=callout_none\= Expect no match 123abcdef\=callout_fail=1
/(?C0)(abc(?C1))*/I abcabcabc abcabc\=callout_fail=1:4 abcabcabc\=callout_fail=1:4
/(\d{3}(?C))*/I 123\=callout_capture 123456\=callout_capture 123456789\=callout_capture
/((xyz)(?C)p|(?C1)xyzabc)/I xyzabc\=callout_capture
/(X)((xyz)(?C)p|(?C1)xyzabc)/I Xxyzabc\=callout_capture
/(?=(abc))(?C)abcdef/I abcdef\=callout_capture
/(?!(abc)(?C1)d)(?C2)abcxyz/I abcxyz\=callout_capture
/(?<=(abc)(?C))xyz/I abcxyz\=callout_capture
/a(b+)(c*)(?C1)/I\= Expect no match abbbbbccc\=callout_data=1
/a(b+?)(c*?)(?C1)/I\= Expect no match abbbbbccc\=callout_data=1
/(?C)abc/I
/(?C)^abc/I
/(?C)a|b/I
/a|(b)(?C)/I b
/x(ab|(bc|(de|(?R))))/I xab xbc xde xxab xxxab\= Expect no match xyab
/^([^()]|\((?1)*\))*$/I abc a(b)c a(b(c))d\= Expect no match) a(b(c)d
/^>abc>([^()]|\((?1)*\))*<xyz<$/I >abc>123<xyz< >abc>1(2)3<xyz< >abc>(1(2)3)<xyz<
/(a(?1)b)/IB
/(a(?1)+b)/IB
/^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/I 12 (((2+2)*-3)-7) -12\= Expect no match ((2+2)*-3)-7)
/^(x(y|(?1){2})z)/I xyz xxyzxyzz\= Expect no match xxyzz xxyzxyzxyzz
/((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/Ix <> <abcd> <abc <123> hij> <abc <def> hij> <abc<>def> <abc<>\= Expect no match <abc
/(?1)/I
/((?2)(abc)/I
/^(abc)def(?1)/I abcdefabc
/^(a|b|c)=(?1)+/I a=a a=b a=bc
/^(a|b|c)=((?1))+/I a=a a=b a=bc
/a(?P<name1>b|c)d(?P<longername2>e)/IB abde acde
/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/IB
/(?P<a>a)...(?P=a)bbb(?P>a)d/IB
/^\W*(?:(?P<one>(?P<two>.)\W*(?P>one)\W*(?P=two)|)|(?P<three>(?P<four>.)\W*(?P>three)\W*(?P=four)|\W*.\W*))\W*$/Ii 1221 Satan, oscillate my metallic sonatas! A man, a plan, a canal: Panama! Able was I ere I saw Elba.\= Expect no match The quick brown fox
/((?(R)a|b))\1(?1)?/I bb bbaa
/(.*)a/Is
/(.*)a\1/Is
/(.*)a(b)\2/Is
/((.*)a|(.*)b)z/Is
/((.*)a|(.*)b)z\1/Is
/((.*)a|(.*)b)z\2/Is
/((.*)a|(.*)b)z\3/Is
/((.*)a|^(.*)b)z\3/Is
/(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a/Is
/(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\31/Is
/(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\32/Is
/(a)(bc)/IB,no_auto_capture abc
/(?P<one>a)(bc)/IB,no_auto_capture abc
/(a)(?P<named>bc)/IB,no_auto_capture
/(aaa(?C1)bbb|ab)/I aaabbb aaabbb\=callout_data=0 aaabbb\=callout_data=1\= Expect no match aaabbb\=callout_data=-1
/ab(?P<one>cd)ef(?P<two>gh)/I abcdefgh abcdefgh\=copy=1,get=two abcdefgh\=copy=one,copy=two abcdefgh\=copy=three
/(?P<Tes>)(?P<Test>)/IB
/(?P<Test>)(?P<Tes>)/IB
/(?P<Z>zz)(?P<A>aa)/I zzaa\=copy=Z zzaa\=copy=A
/(?P<x>eks)(?P<x>eccs)/I
/(?P<abc>abc(?P<def>def)(?P<abc>xyz))/I
"\[((?P<elem>\d+)(,(?P>elem))*)\]"I [10,20,30,5,5,4,4,2,43,23,4234]\= Expect no match []
"\[((?P<elem>\d+)(,(?P>elem))*)?\]"I [10,20,30,5,5,4,4,2,43,23,4234] []
/(a(b(?2)c))?/IB
/(a(b(?2)c))*/IB
/(a(b(?2)c)){0,2}/IB
/[ab]{1}+/B
/()(?1){1}/B
/()(?1)/B
/((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/Ii Baby Bjorn Active Carrier - With free SHIPPING!!
/((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/Ii Baby Bjorn Active Carrier - With free SHIPPING!!
/a*.*b/IB
/(a|b)*.?c/IB
/abc(?C255)de(?C)f/IB
/abcde/IB,auto_callout abcde\= Expect no match abcdfe
/a*b/IB,auto_callout ab aaaab aaaacb
/a*b/IB,auto_callout ab aaaab aaaacb
/a+b/IB,auto_callout ab aaaab\= Expect no match aaaacb
/(abc|def)x/IB,auto_callout abcx defx\= Expect no match abcdefzx
/(abc|def)x/IB,auto_callout abcx defx\= Expect no match abcdefzx
/(ab|cd){3,4}/I,auto_callout ababab abcdabcd abcdcdcdcdcd
/([ab]{,}c|xy)/IB,auto_callout\= Expect no match Note: that {,} does NOT introduce a quantifier
/([ab]{,}c|xy)/IB,auto_callout\= Expect no match Note: that {,} does NOT introduce a quantifier
/([ab]{1,4}c|xy){4,5}?123/IB,auto_callout aacaacaacaacaac123
/\b.*/I ab cd\=offset=1
/\b.*/Is ab cd\=startoffset=1
/(?!.bcd).*/I Xbcd12345
/abcde/I ab\=ps abc\=ps abcd\=ps abcde\=ps the quick brown abc\=ps\= Expect no match\=ps the quick brown abxyz fox\=ps
"^(0?[1-9]|[12][0-9]|3[01])/(0?[1-9]|1[012])/(20)?\d\d$"I 13/05/04\=ps 13/5/2004\=ps 02/05/09\=ps 1\=ps 1/2\=ps 1/2/0\=ps 1/2/04\=ps 0\=ps 02/\=ps 02/0\=ps 02/1\=ps\= Expect no match\=ps \=ps 123\=ps 33/4/04\=ps 3/13/04\=ps 0/1/2003\=ps 0/\=ps 02/0/\=ps 02/13\=ps
/0{0,2}ABC/I
/\d{3,}ABC/I
/\d*ABC/I
/[abc]+DE/I
/[abc]?123/I 123\=ps a\=ps b\=ps c\=ps c12\=ps c123\=ps
/^(?:\d){3,5}X/I 1\=ps 123\=ps 123X 1234\=ps 1234X 12345\=ps 12345X\= Expect no match 1X 123456\=ps
"<(\w+)/?>(.)*</(\1)>"Igms <!DOCTYPE seite SYSTEM "http://www.lco.lineas.de/xmlCms.dtd">\n<seite>\n<dokumenteninformation>\n<seitentitel>Partner der LCO</seitentitel>\n<sprache>de</sprache>\n<seitenbeschreibung>Partner der LINEAS Consulting\nGmbH</seitenbeschreibung>\n<schluesselworte>LINEAS Consulting GmbH Hamburg\nPartnerfirmen</schluesselworte>\n<revisit>30 days</revisit>\n<robots>index,follow</robots>\n<menueinformation>\n<aktiv>ja</aktiv>\n<menueposition>3</menueposition>\n<menuetext>Partner</menuetext>\n</menueinformation>\n<lastedited>\n<autor>LCO</autor>\n<firma>LINEAS Consulting</firma>\n<datum>15.10.2003</datum>\n</lastedited>\n</dokumenteninformation>\n<inhalt>\n\n<absatzueberschrift>Die Partnerfirmen der LINEAS Consulting\nGmbH</absatzueberschrift>\n\n<absatz><link ziel="http://www.ca.com/" zielfenster="_blank">\n<bild name="logo_ca.gif" rahmen="no"/></link> <link\nziel="http://www.ey.com/" zielfenster="_blank"><bild\nname="logo_euy.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><link ziel="http://www.cisco.de/" zielfenster="_blank">\n<bild name="logo_cisco.gif" rahmen="ja"/></link></absatz>\n\n<absatz><link ziel="http://www.atelion.de/"\nzielfenster="_blank"><bild\nname="logo_atelion.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><link ziel="http://www.line-information.de/"\nzielfenster="_blank">\n<bild name="logo_line_information.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><bild name="logo_aw.gif" rahmen="no"/></absatz>\n\n<absatz><link ziel="http://www.incognis.de/"\nzielfenster="_blank"><bild\nname="logo_incognis.gif" rahmen="no"/></link></absatz>\n\n<absatz><link ziel="http://www.addcraft.com/"\nzielfenster="_blank"><bild\nname="logo_addcraft.gif" rahmen="no"/></link></absatz>\n\n<absatz><link ziel="http://www.comendo.com/"\nzielfenster="_blank"><bild\nname="logo_comendo.gif" rahmen="no"/></link></absatz>\n\n</inhalt>\n</seite>\=jitstack=1024
/line\nbreak/I this is a line\nbreak line one\nthis is a line\nbreak in the second line
/line\nbreak/I,firstline this is a line\nbreak\= Expect no match line one\nthis is a line\nbreak in the second line
/line\nbreak/Im,firstline this is a line\nbreak\= Expect no match line one\nthis is a line\nbreak in the second line
/(?i)(?-i)AbCd/I AbCd\= Expect no match abcd
/a{11111111111111111111}/I
/(){64294967295}/I
/(){2,4294967295}/I
"(?i:a)(?i:b)(?i:c)(?i:d)(?i:e)(?i:f)(?i:g)(?i:h)(?i:i)(?i:j)(k)(?i:l)A\1B"I abcdefghijklAkB
"(?P<n0>a)(?P<n1>b)(?P<n2>c)(?P<n3>d)(?P<n4>e)(?P<n5>f)(?P<n6>g)(?P<n7>h)(?P<n8>i)(?P<n9>j)(?P<n10>k)(?P<n11>l)A\11B"I abcdefghijklAkB
"(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)A\11B"I abcdefghijklAkB
"(?P<name0>a)(?P<name1>a)(?P<name2>a)(?P<name3>a)(?P<name4>a)(?P<name5>a)(?P<name6>a)(?P<name7>a)(?P<name8>a)(?P<name9>a)(?P<name10>a)(?P<name11>a)(?P<name12>a)(?P<name13>a)(?P<name14>a)(?P<name15>a)(?P<name16>a)(?P<name17>a)(?P<name18>a)(?P<name19>a)(?P<name20>a)(?P<name21>a)(?P<name22>a)(?P<name23>a)(?P<name24>a)(?P<name25>a)(?P<name26>a)(?P<name27>a)(?P<name28>a)(?P<name29>a)(?P<name30>a)(?P<name31>a)(?P<name32>a)(?P<name33>a)(?P<name34>a)(?P<name35>a)(?P<name36>a)(?P<name37>a)(?P<name38>a)(?P<name39>a)(?P<name40>a)(?P<name41>a)(?P<name42>a)(?P<name43>a)(?P<name44>a)(?P<name45>a)(?P<name46>a)(?P<name47>a)(?P<name48>a)(?P<name49>a)(?P<name50>a)(?P<name51>a)(?P<name52>a)(?P<name53>a)(?P<name54>a)(?P<name55>a)(?P<name56>a)(?P<name57>a)(?P<name58>a)(?P<name59>a)(?P<name60>a)(?P<name61>a)(?P<name62>a)(?P<name63>a)(?P<name64>a)(?P<name65>a)(?P<name66>a)(?P<name67>a)(?P<name68>a)(?P<name69>a)(?P<name70>a)(?P<name71>a)(?P<name72>a)(?P<name73>a)(?P<name74>a)(?P<name75>a)(?P<name76>a)(?P<name77>a)(?P<name78>a)(?P<name79>a)(?P<name80>a)(?P<name81>a)(?P<name82>a)(?P<name83>a)(?P<name84>a)(?P<name85>a)(?P<name86>a)(?P<name87>a)(?P<name88>a)(?P<name89>a)(?P<name90>a)(?P<name91>a)(?P<name92>a)(?P<name93>a)(?P<name94>a)(?P<name95>a)(?P<name96>a)(?P<name97>a)(?P<name98>a)(?P<name99>a)(?P<name100>a)"I aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
"(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)(a)"I aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
/[^()]*(?:\((?R)\)[^()]*)*/I (this(and)that (this(and)that) (this(and)that)stuff
/[^()]*(?:\((?>(?R))\)[^()]*)*/I (this(and)that (this(and)that)
/[^()]*(?:\((?R)\))*[^()]*/I (this(and)that (this(and)that)
/(?:\((?R)\))*[^()]*/I (this(and)that (this(and)that) ((this))
/(?:\((?R)\))|[^()]*/I (this(and)that (this(and)that) (this) ((this))
/\x{0000ff}/I
/^((?P<A>a1)|(?P<A>a2)b)/I
/^((?P<A>a1)|(?P<A>a2)b)/I,dupnames a1b\=copy=A a2b\=copy=A a1b\=copy=Z,copy=A
/(?|(?<a>)(?<b>)(?<a>)|(?<a>)(?<b>)(?<a>))/I,dupnames
/^(?P<A>a)(?P<A>b)/I,dupnames ab\=copy=A
/^(?P<A>a)(?P<A>b)|cd/I,dupnames ab\=copy=A cd\=copy=A
/^(?P<A>a)(?P<A>b)|cd(?P<A>ef)(?P<A>gh)/I,dupnames cdefgh\=copy=A
/^((?P<A>a1)|(?P<A>a2)b)/I,dupnames a1b\=get=A a2b\=get=A a1b\=get=Z,get=A
/^(?P<A>a)(?P<A>b)/I,dupnames ab\=get=A
/^(?P<A>a)(?P<A>b)|cd/I,dupnames ab\=get=A cd\=get=A
/^(?P<A>a)(?P<A>b)|cd(?P<A>ef)(?P<A>gh)/I,dupnames cdefgh\=get=A
/(?J)^((?P<A>a1)|(?P<A>a2)b)/I a1b\=copy=A a2b\=copy=A
/^(?P<A>a) (?J:(?P<B>b)(?P<B>c)) (?P<A>d)/I
# In this next test, J is not set at the outer level; consequently it isn't set# in the pattern's options; consequently pcre2_substring_get_byname() produces# a random value.
/^(?P<A>a) (?J:(?P<B>b)(?P<B>c)) (?P<C>d)/I a bc d\=copy=A,copy=B,copy=C
/^(?P<A>a)?(?(A)a|b)/I aabc bc\= Expect no match abc
/(?:(?(ZZ)a|b)(?P<ZZ>X))+/I bXaX
/(?:(?(2y)a|b)(X))+/I
/(?:(?(ZA)a|b)(?P<ZZ>X))+/I
/(?:(?(ZZ)a|b)(?(ZZ)a|b)(?P<ZZ>X))+/I bbXaaX
/(?:(?(ZZ)a|\(b\))\\(?P<ZZ>X))+/I (b)\\Xa\\X
/(?P<ABC/I
/(?:(?(A)(?P=A)a|b)(?P<A>X|Y))+/I bXXaYYaY bXYaXXaX
/()()()()()()()()()(?:(?(A)(?P=A)a|b)(?P<A>X|Y))+/I bXXaYYaY
/\s*,\s*/I \x0b,\x0b \x0c,\x0d
/^abc/Im,newline=lf xyz\nabc xyz\r\nabc\= Expect no match xyz\rabc xyzabc\r xyzabc\rpqr xyzabc\r\n xyzabc\r\npqr
/^abc/Im,newline=crlf xyz\r\nabclf>\= Expect no match xyz\nabclf xyz\rabclf
/^abc/Im,newline=cr xyz\rabc\= Expect no match xyz\nabc xyz\r\nabc
/^abc/Im,newline=bad
/.*/I,newline=lf abc\ndef abc\rdef abc\r\ndef
/.*/I,newline=cr abc\ndef abc\rdef abc\r\ndef
/.*/I,newline=crlf abc\ndef abc\rdef abc\r\ndef
/\w+(.)(.)?def/Is abc\ndef abc\rdef abc\r\ndef
/(?P<B>25[0-5]|2[0-4]\d|[01]?\d?\d)(?:\.(?P>B)){3}/I
/()()()()()()()()()()()()()()()()()()()() ()()()()()()()()()()()()()()()()()()()() ()()()()()()()()()()()()()()()()()()()() ()()()()()()()()()()()()()()()()()()()() ()()()()()()()()()()()()()()()()()()()() (.(.))/Ix XY\=ovector=133
/(a*b|(?i:c*(?-i)d))/I
/()[ab]xyz/I
/(|)[ab]xyz/I
/(|c)[ab]xyz/I
/(|c?)[ab]xyz/I
/(d?|c?)[ab]xyz/I
/(d?|c)[ab]xyz/I
/^a*b\d/IB
/^a*+b\d/IB
/^a*?b\d/IB
/^a+A\d/IB aaaA5\= Expect no match aaaa5
/^a*A\d/IBi aaaA5 aaaa5 a5
/(a*|b*)[cd]/I
/(a+|b*)[cd]/I
/(a*|b+)[cd]/I
/(a+|b+)[cd]/I
/(((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((( (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((( ((( a )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) )))/Ix large nest
/a*\d/B
/a*\D/B
/0*\d/B
/0*\D/B
/a*\s/B
/a*\S/B
/ *\s/B
/ *\S/B
/a*\w/B
/a*\W/B
/=*\w/B
/=*\W/B
/\d*a/B
/\d*2/B
/\d*\d/B
/\d*\D/B
/\d*\s/B
/\d*\S/B
/\d*\w/B
/\d*\W/B
/\D*a/B
/\D*2/B
/\D*\d/B
/\D*\D/B
/\D*\s/B
/\D*\S/B
/\D*\w/B
/\D*\W/B
/\s*a/B
/\s*2/B
/\s*\d/B
/\s*\D/B
/\s*\s/B
/\s*\S/B
/\s*\w/B
/\s*\W/B
/\S*a/B
/\S*2/B
/\S*\d/B
/\S*\D/B
/\S*\s/B
/\S*\S/B
/\S*\w/B
/\S*\W/B
/\w*a/B
/\w*2/B
/\w*\d/B
/\w*\D/B
/\w*\s/B
/\w*\S/B
/\w*\w/B
/\w*\W/B
/\W*a/B
/\W*2/B
/\W*\d/B
/\W*\D/B
/\W*\s/B
/\W*\S/B
/\W*\w/B
/\W*\W/B
/[^a]+a/B
/[^a]+a/Bi
/[^a]+A/Bi
/[^a]+b/B
/[^a]+\d/B
/a*[^a]/B
/(?P<abc>x)(?P<xyz>y)/I xy\=copy=abc,copy=xyz
/(?<abc>x)(?'xyz'y)/I xy\=copy=abc,copy=xyz
/(?<abc'x)(?'xyz'y)/I
/(?<abc>x)(?'xyz>y)/I
/(?P'abc'x)(?P<xyz>y)/I
/^(?:(?(ZZ)a|b)(?<ZZ>X))+/ bXaX bXbX\= Expect no match aXaX aXbX
/^(?P>abc)(?<abcd>xxx)/
/^(?P>abc)(?<abc>x|y)/ xx xy yy yx
/^(?P>abc)(?P<abc>x|y)/ xx xy yy yx
/^((?(abc)a|b)(?<abc>x|y))+/ bxay bxby\= Expect no match axby
/^(((?P=abc)|X)(?<abc>x|y))+/ XxXxxx XxXyyx XxXyxx\= Expect no match x
/^(?1)(abc)/ abcabc
/^(?:(?:\1|X)(a|b))+/ Xaaa Xaba
/^[\E\Qa\E-\Qz\E]+/B
/^[a\Q]bc\E]/B
/^[a-\Q\E]/B
/^(?P>abc)[()](?<abc>)/B
/^((?(abc)y)[()](?P<abc>x))+/B (xy)x
/^(?P>abc)\Q()\E(?<abc>)/B
/^(?P>abc)[a\Q(]\E(](?<abc>)/B
/^(?P>abc) # this is (a comment) (?<abc>)/Bx
/^\W*(?:(?<one>(?<two>.)\W*(?&one)\W*\k<two>|)|(?<three>(?<four>.)\W*(?&three)\W*\k'four'|\W*.\W*))\W*$/Ii 1221 Satan, oscillate my metallic sonatas! A man, a plan, a canal: Panama! Able was I ere I saw Elba.\= Expect no match The quick brown fox
/(?=(\w+))\1:/I abcd:
/(?=(?'abc'\w+))\k<abc>:/I abcd:
/(?'abc'a|b)(?<abc>d|e)\k<abc>{2}/dupnames adaa\= Expect no match addd adbb
/(?'abc'a|b)(?<abc>d|e)(?&abc){2}/dupnames bdaa bdab\= Expect no match bddd
/(?(<bc))/
/(?(''))/
/(?('R')stuff)/
/((abc (?(R) (?(R1)1) (?(R2)2) X | (?1) (?2) (?R) ))) /x abcabc1Xabc2XabcXabcabc
/(?<A> (?'B' abc (?(R) (?(R&A)1) (?(R&B)2) X | (?1) (?2) (?R) ))) /x abcabc1Xabc2XabcXabcabc
/(?<A> (?'B' abc (?(R) (?(R&C)1) (?(R&B)2) X | (?1) (?2) (?R) ))) /x
/^(?(DEFINE) abc | xyz ) /x
/(?(DEFINE) abc) xyz/Ix
/(a|)*\d/ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4\=ovector=0\= Expect no match aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\=ovector=0
/^a.b/newline=lf a\rb\= Expect no match a\nb
/^a.b/newline=cr a\nb\= Expect no match a\rb
/^a.b/newline=anycrlf a\x85b\= Expect no match a\rb
/^a.b/newline=any\= Expect no match a\nb a\rb a\x85b
/^abc./gmx,newline=any abc1 \x0aabc2 \x0babc3xx \x0cabc4 \x0dabc5xx \x0d\x0aabc6 \x85abc7 JUNK
/abc.$/gmx,newline=any abc1\x0a abc2\x0b abc3\x0c abc4\x0d abc5\x0d\x0a abc6\x85 abc7 abc9
/^a\Rb/bsr=unicode a\nb a\rb a\r\nb a\x0bb a\x0cb a\x85b\= Expect no match a\n\rb
/^a\R*b/bsr=unicode ab a\nb a\rb a\r\nb a\x0bb a\x0cb a\x85b a\n\rb a\n\r\x85\x0cb
/^a\R+b/bsr=unicode a\nb a\rb a\r\nb a\x0bb a\x0cb a\x85b a\n\rb a\n\r\x85\x0cb\= Expect no match ab
/^a\R{1,3}b/bsr=unicode a\nb a\n\rb a\n\r\x85b a\r\n\r\nb a\r\n\r\n\r\nb a\n\r\n\rb a\n\n\r\nb\= Expect no match a\n\n\n\rb a\r
/(?&abc)X(?<abc>P)/I abcPXP123
/(?1)X(?<abc>P)/I abcPXP123
/(?:a(?&abc)b)*(?<abc>x)/ 123axbaxbaxbx456 123axbaxbaxb456
/(?:a(?&abc)b){1,5}(?<abc>x)/ 123axbaxbaxbx456
/(?:a(?&abc)b){2,5}(?<abc>x)/ 123axbaxbaxbx456
/(?:a(?&abc)b){2,}(?<abc>x)/ 123axbaxbaxbx456
/(abc)(?i:(?1))/ defabcabcxyz\= Expect no match DEFabcABCXYZ
/(abc)(?:(?i)(?1))/ defabcabcxyz\= Expect no match DEFabcABCXYZ
/^(a)\g-2/
/^(a)\g/
/^(a)\g{0}/
/^(a)\g{3/
/^(a)\g{aa}/
/^a.b/newline=lf a\rb\= Expect no match a\nb
/.+foo/ afoo\= Expect no match \r\nfoo \nfoo
/.+foo/newline=crlf afoo \nfoo\= Expect no match \r\nfoo
/.+foo/newline=any afoo\= Expect no match \nfoo \r\nfoo
/.+foo/s afoo \r\nfoo \nfoo
/^$/gm,newline=any abc\r\rxyz abc\n\rxyz\= Expect no match abc\r\nxyz
/(?m)^$/g,newline=any,aftertext abc\r\n\r\n
/(?m)^$|^\r\n/g,newline=any,aftertext abc\r\n\r\n
/(?m)$/g,newline=any,aftertext abc\r\n\r\n
/abc.$/gmx,newline=anycrlf abc1\x0a abc2\x0b abc3\x0c abc4\x0d abc5\x0d\x0a abc6\x85 abc9
/^X/m XABC\= Expect no match XABC\=notbol
/(ab|c)(?-1)/B abc
/xy(?+1)(abc)/B xyabcabc\= Expect no match xyabc
/x(?-0)y/
/x(?-1)y/
/x(?+0)y/
/x(?+1)y/
/^(abc)?(?(-1)X|Y)/B abcX Y\= Expect no match abcY
/^((?(+1)X|Y)(abc))+/B YabcXabc YabcXabcXabc\= Expect no match XabcXabc
/(?(-1)a)/B
/((?(-1)a))/B
/((?(-2)a))/B
/^(?(+1)X|Y)(.)/B Y!
/(?<A>tom|bon)-\k{A}/ tom-tom bon-bon\= Expect no match tom-bon
/\g{A/
/(?|(abc)|(xyz))/B >abc< >xyz<
/(x)(?|(abc)|(xyz))(x)/B xabcx xxyzx
/(x)(?|(abc)(pqr)|(xyz))(x)/B xabcpqrx xxyzx
/\H++X/B\= Expect no match XXXX
/\H+\hY/B XXXX Y
/\H+ Y/B
/\h+A/B
/\v*B/B
/\V+\x0a/B
/A+\h/B
/ *\H/B
/A*\v/B
/\x0b*\V/B
/\d+\h/B
/\d*\v/B
/S+\h\S+\v/B
/\w{3,}\h\w+\v/B
/\h+\d\h+\w\h+\S\h+\H/B
/\v+\d\v+\w\v+\S\v+\V/B
/\H+\h\H+\d/B
/\V+\v\V+\w/B
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/[\E]AAA/
/[\Q\E]AAA/
/[^\E]AAA/
/[^\Q\E]AAA/
/[\E^]AAA/
/[\Q\E^]AAA/
/A(*PRUNE)B(*SKIP)C(*THEN)D(*COMMIT)E(*F)F(*FAIL)G(?!)H(*ACCEPT)I/B
/^a+(*FAIL)/auto_callout\= Expect no match aaaaaa
/a+b?c+(*FAIL)/auto_callout\= Expect no match aaabccc
/a+b?(*PRUNE)c+(*FAIL)/auto_callout\= Expect no match aaabccc
/a+b?(*COMMIT)c+(*FAIL)/auto_callout\= Expect no match aaabccc
/a+b?(*SKIP)c+(*FAIL)/auto_callout\= Expect no match aaabcccaaabccc
/a+b?(*THEN)c+(*FAIL)/auto_callout\= Expect no match aaabccc
/a(*MARK)b/
/\g6666666666/
/[\g6666666666]/B
/(?1)\c[/
/.+A/newline=crlf\= Expect no match \r\nA
/\nA/newline=crlf \r\nA
/[\r\n]A/newline=crlf \r\nA
/(\r|\n)A/newline=crlf \r\nA
/a(*CR)b/
/(*CR)a.b/ a\nb\= Expect no match a\rb
/(*CR)a.b/newline=lf a\nb\= Expect no match a\rb
/(*LF)a.b/newline=CRLF a\rb\= Expect no match a\nb
/(*CRLF)a.b/ a\rb a\nb\= Expect no match a\r\nb
/(*ANYCRLF)a.b/newline=CR\= Expect no match a\rb a\nb a\r\nb
/(*ANY)a.b/newline=cr\= Expect no match a\rb a\nb a\r\nb a\x85b
/(*ANY).*/g abc\r\ndef
/(*ANYCRLF).*/g abc\r\ndef
/(*CRLF).*/g abc\r\ndef
/(*NUL)^.*/ a\nb\x00ccc
/(*NUL)^.*/s a\nb\x00ccc
/^x/m,newline=NUL ab\x00xy
/'#comment' 0d 0a 00 '^x\' 0a 'y'/x,newline=nul,hex x\nyz
/(*NUL)^X\NY/ X\nY X\rY\= Expect no match X\x00Y
/a\Rb/I,bsr=anycrlf a\rb a\nb a\r\nb\= Expect no match a\x85b a\x0bb
/a\Rb/I,bsr=unicode a\rb a\nb a\r\nb a\x85b a\x0bb
/a\R?b/I,bsr=anycrlf a\rb a\nb a\r\nb\= Expect no match a\x85b a\x0bb
/a\R?b/I,bsr=unicode a\rb a\nb a\r\nb a\x85b a\x0bb
/a\R{2,4}b/I,bsr=anycrlf a\r\n\nb a\n\r\rb a\r\n\r\n\r\n\r\nb\= Expect no match a\x85\x85b a\x0b\x0bb
/a\R{2,4}b/I,bsr=unicode a\r\rb a\n\n\nb a\r\n\n\r\rb a\x85\x85b a\x0b\x0bb\= Expect no match a\r\r\r\r\rb
/(*BSR_ANYCRLF)a\Rb/I a\nb a\rb
/(*BSR_UNICODE)a\Rb/I a\x85b
/(*BSR_ANYCRLF)(*CRLF)a\Rb/I a\nb a\rb
/(*CRLF)(*BSR_UNICODE)a\Rb/I a\x85b
/(*CRLF)(*BSR_ANYCRLF)(*CR)ab/I
/(?<a>)(?&)/
/(?<abc>)(?&a)/
/(?<a>)(?&aaaaaaaaaaaaaaaaaaaaaaa)/
/(?+-a)/
/(?-+a)/
/(?(-1))/
/(?(+10))/
/(?(10))/
/(?(+2))()()/
/(?(2))()()/
/\k''/
/\k<>/
/\k{}/
/\k/
/\kabc/
/(?P=)/
/(?P>)/
/[[:foo:]]/
/[[:1234:]]/
/[[:f\oo:]]/
/[[: :]]/
/[[:...:]]/
/[[:l\ower:]]/
/[[:abc\:]]/
/[abc[:x\]pqr:]]/
/[[:a\dz:]]/
/(^(a|b\g<-1'c))/
/^(?+1)(?<a>x|y){0}z/ xzxx yzyy\= Expect no match xxz
/(\3)(\1)(a)/\= Expect no match cat
/(\3)(\1)(a)/allow_empty_class,match_unset_backref,dupnames cat
/TA]/ The ACTA] comes
/TA]/allow_empty_class,match_unset_backref,dupnames The ACTA] comes
/(?2)[]a()b](abc)/ abcbabc
/(?2)[^]a()b](abc)/ abcbabc
/(?1)[]a()b](abc)/ abcbabc\= Expect no match abcXabc
/(?1)[^]a()b](abc)/ abcXabc\= Expect no match abcbabc
/(?2)[]a()b](abc)(xyz)/ xyzbabcxyz
/(?&N)[]a(?<N>)](?<M>abc)/ abc<abc
/(?&N)[]a(?<N>)](abc)/ abc<abc
/a[]b/
/a[^]b/
/a[]b/allow_empty_class,match_unset_backref,dupnames\= Expect no match ab
/a[]+b/allow_empty_class,match_unset_backref,dupnames\= Expect no match ab
/a[]*+b/allow_empty_class,match_unset_backref,dupnames\= Expect no match ab
/a[^]b/allow_empty_class,match_unset_backref,dupnames aXb a\nb\= Expect no match ab
/a[^]+b/allow_empty_class,match_unset_backref,dupnames aXb a\nX\nXb\= Expect no match ab
/a(?!)b/B
/(?!)?a/B ab
/a(*FAIL)+b/
/(abc|pqr|123){0}[xyz]/I
/(?(?=.*b)b|^)/I,auto_callout adc abc
/(?(?=b).*b|^d)/I
/(?(?=.*b).*b|^d)/I
/xyz/auto_callout xyz abcxyz\= Expect no match abc abcxypqr
/xyz/auto_callout,no_start_optimize abcxyz\= Expect no match abc abcxypqr
/(*NO_START_OPT)xyz/auto_callout abcxyz
/(*NO_AUTO_POSSESS)a+b/B
/xyz/auto_callout,no_start_optimize abcxyz
/^"((?(?=[a])[^"])|b)*"$/auto_callout "ab"
/^"((?(?=[a])[^"])|b)*"$/ "ab"
/^X(?5)(a)(?|(b)|(q))(c)(d)Y/ XYabcdY
/^X(?&N)(a)(?|(b)|(q))(c)(d)(?<N>Y)/ XYabcdY
/Xa{2,4}b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/Xa{2,4}?b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/Xa{2,4}+b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/X\d{2,4}b/ X\=ps X3\=ps X33\=ps X333\=ps X3333\=ps
/X\d{2,4}?b/ X\=ps X3\=ps X33\=ps X333\=ps X3333\=ps
/X\d{2,4}+b/ X\=ps X3\=ps X33\=ps X333\=ps X3333\=ps
/X\D{2,4}b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/X\D{2,4}?b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/X\D{2,4}+b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/X[abc]{2,4}b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/X[abc]{2,4}?b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/X[abc]{2,4}+b/ X\=ps Xa\=ps Xaa\=ps Xaaa\=ps Xaaaa\=ps
/X[^a]{2,4}b/ X\=ps Xz\=ps Xzz\=ps Xzzz\=ps Xzzzz\=ps
/X[^a]{2,4}?b/ X\=ps Xz\=ps Xzz\=ps Xzzz\=ps Xzzzz\=ps
/X[^a]{2,4}+b/ X\=ps Xz\=ps Xzz\=ps Xzzz\=ps Xzzzz\=ps
/(Y)X\1{2,4}b/ YX\=ps YXY\=ps YXYY\=ps YXYYY\=ps YXYYYY\=ps
/(Y)X\1{2,4}?b/ YX\=ps YXY\=ps YXYY\=ps YXYYY\=ps YXYYYY\=ps
/(Y)X\1{2,4}+b/ YX\=ps YXY\=ps YXYY\=ps YXYYY\=ps YXYYYY\=ps
/\++\KZ|\d+X|9+Y/startchar ++++123999\=ps ++++123999Y\=ps ++++Z1234\=ps
/Z(*F)/\= Expect no match Z\=ps ZA\=ps
/Z(?!)/\= Expect no match Z\=ps ZA\=ps
/dog(sbody)?/ dogs\=ps dogs\=ph
/dog(sbody)??/ dogs\=ps dogs\=ph
/dog|dogsbody/ dogs\=ps dogs\=ph
/dogsbody|dog/ dogs\=ps dogs\=ph
/\bthe cat\b/ the cat\=ps the cat\=ph
/abc/ abc\=ps abc\=ph
/abc\K123/startchar xyzabc123pqr xyzabc12\=ps xyzabc12\=ph
/(?<=abc)123/ xyzabc123pqr xyzabc12\=ps xyzabc12\=ph
/\babc\b/ +++abc+++ +++ab\=ps +++ab\=ph
/(?&word)(?&element)(?(DEFINE)(?<element><[^m][^>]>[^<])(?<word>\w*+))/B
/(?&word)(?&element)(?(DEFINE)(?<element><[^\d][^>]>[^<])(?<word>\w*+))/B
/(ab)(x(y)z(cd(*ACCEPT)))pq/B
/abc\K/aftertext,startchar abcdef abcdef\=notempty_atstart xyzabcdef\=notempty_atstart\= Expect no match abcdef\=notempty xyzabcdef\=notempty
/^(?:(?=abc)|abc\K)/aftertext,startchar abcdef abcdef\=notempty_atstart\= Expect no match abcdef\=notempty
/a?b?/aftertext xyz xyzabc xyzabc\=notempty xyzabc\=notempty_atstart xyz\=notempty_atstart\= Expect no match xyz\=notempty
/^a?b?/aftertext xyz xyzabc\= Expect no match xyzabc\=notempty xyzabc\=notempty_atstart xyz\=notempty_atstart xyz\=notempty
/^(?<name>a|b\g<name>c)/ aaaa bacxxx bbaccxxx bbbacccxx
/^(?<name>a|b\g'name'c)/ aaaa bacxxx bbaccxxx bbbacccxx
/^(a|b\g<1>c)/ aaaa bacxxx bbaccxxx bbbacccxx
/^(a|b\g'1'c)/ aaaa bacxxx bbaccxxx bbbacccxx
/^(a|b\g'-1'c)/ aaaa bacxxx bbaccxxx bbbacccxx
/(^(a|b\g<-1>c))/ aaaa bacxxx bbaccxxx bbbacccxx
/(?-i:\g<name>)(?i:(?<name>a))/ XaaX XAAX
/(?i:\g<name>)(?-i:(?<name>a))/ XaaX\= Expect no match XAAX
/(?-i:\g<+1>)(?i:(a))/ XaaX XAAX
/(?=(?<regex>(?#simplesyntax)\$(?<name>[a-zA-Z_\x{7f}-\x{ff}][a-zA-Z0-9_\x{7f}-\x{ff}]*)(?:\[(?<index>[a-zA-Z0-9_\x{7f}-\x{ff}]+|\$\g<name>)\]|->\g<name>(\(.*?\))?)?|(?#simple syntax withbraces)\$\{(?:\g<name>(?<indices>\[(?:\g<index>|'(?:\\.|[^'\\])*'|"(?:\g<regex>|\\.|[^"\\])*")\])?|\g<complex>|\$\{\g<complex>\})\}|(?#complexsyntax)\{(?<complex>\$(?<segment>\g<name>(\g<indices>*|\(.*?\))?)(?:->\g<segment>)*|\$\g<complex>|\$\{\g<complex>\})\}))\{/
/(?<n>a|b|c)\g<n>*/ abc accccbbb
/^X(?7)(a)(?|(b)|(q)(r)(s))(c)(d)(Y)/ XYabcdY
/(?<=b(?1)|zzz)(a)/ xbaax xzzzax
/(a)(?<=b\1)/
/(a)(?<=b+(?1))/
/(a+)(?<=b(?1))/
/(a(?<=b(?1)))/
/(?<=b(?1))xyz/
/(?<=b(?1))xyz(b+)pqrstuvew/
/(a|bc)\1/I
/(a|bc)\1{2,3}/I
/(a|bc)(?1)/I
/(a|b\1)(a|b\1)/I
/(a|b\1){2}/I
/(a|bbbb\1)(a|bbbb\1)/I
/(a|bbbb\1){2}/I
/^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]/I
/<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>/Iis
"(?>.*/)foo"I
/(?(?=[^a-z]+[a-z]) \d{2}-[a-z]{3}-\d{2} | \d{2}-\d{2}-\d{2} ) /Ix
/(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/Ii
/(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/I
/<a[\s]+href[\s]*=[\s]* # find <a href= ([\"\'])? # find single or double quote (?(1) (.*?)\1 | ([^\s]+)) # if quote found, match up to next matching # quote, otherwise match up to next space/Iisx
/^(?!:) # colon disallowed at start (?: # start of item (?: [0-9a-f]{1,4} | # 1-4 hex digits or (?(1)0 | () ) ) # if null previously matched, fail; else null : # followed by colon ){1,7} # end item; 1-7 of them required [0-9a-f]{1,4} $ # final hex number at end of string (?(1)|.) # check that there was an empty component /Iix
/(?|(?<a>A)|(?<a>B))/I AB\=copy=a BA\=copy=a
/(?|(?<a>A)|(?<b>B))/
/(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) | b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/Ix,dupnames a"aaaaa b"aaaaa\= Expect no match b"11111 a"11111
/^(?|(a)(b)(c)(?<D>d)|(?<D>e)) (?('D')X|Y)/IBx,dupnames abcdX eX\= Expect no match abcdY ey
/(?<A>a) (b)(c) (?<A>d (?(R&A)$ | (?4)) )/IBx,dupnames abcdd\= Expect no match abcdde
/abcd*/ xxxxabcd\=ps xxxxabcd\=ph
/abcd*/i xxxxabcd\=ps xxxxabcd\=ph XXXXABCD\=ps XXXXABCD\=ph
/abc\d*/ xxxxabc1\=ps xxxxabc1\=ph
/(a)bc\1*/ xxxxabca\=ps xxxxabca\=ph
/abc[de]*/ xxxxabcde\=ps xxxxabcde\=ph
/(\3)(\1)(a)/allow_empty_class,match_unset_backref,dupnames cat
/(\3)(\1)(a)/I,allow_empty_class,match_unset_backref,dupnames cat
/(\3)(\1)(a)/I\= Expect no match cat
/i(?(DEFINE)(?<s>a))/I i
/()i(?(1)a)/I ia
/(?i)a(?-i)b|c/B XabX XAbX CcC\= Expect no match XABX
/(?i)a(?s)b|c/B
/(?i)a(?s-i)b|c/B
/^(ab(c\1)d|x){2}$/B xabcxd
/^(?&t)*+(?(DEFINE)(?<t>.))$/B
/^(?&t)*(?(DEFINE)(?<t>.))$/B
# This one is here because Perl gives the match as "b" rather than "ab". I# believe this to be a Perl bug.
/(?>a\Kb)z|(ab)/ ab\=startchar
/(?P<L1>(?P<L2>0|)|(?P>L2)(?P>L1))/ abcd 0abc
/abc(*MARK:)pqr/
/abc(*:)pqr/
/(*COMMIT:X)/B
# This should, and does, fail. In Perl, it does not, which I think is a# bug because replacing the B in the pattern by (B|D) does make it fail.# Turning off Perl's optimization by inserting (??{""}) also makes it fail.
/A(*COMMIT)B/aftertext,mark\= Expect no match ACABX
# These should be different, but in Perl they are not, which I think# is a bug in Perl.
/A(*THEN)B|A(*THEN)C/mark AC
/A(*PRUNE)B|A(*PRUNE)C/mark\= Expect no match AC
# Mark names can be duplicated. Perl doesn't give a mark for this one,# though PCRE2 does.
/^A(*:A)B|^X(*:A)Y/mark\= Expect no match XAQQ
# COMMIT at the start of a pattern should be the same as an anchor. Perl# optimizations defeat this. So does the PCRE2 optimization unless we disable# it.
/(*COMMIT)ABC/ ABCDEFG
/(*COMMIT)ABC/no_start_optimize\= Expect no match DEFGABC
/^(ab (c+(*THEN)cd) | xyz)/x\= Expect no match abcccd
/^(ab (c+(*PRUNE)cd) | xyz)/x\= Expect no match abcccd
/^(ab (c+(*FAIL)cd) | xyz)/x\= Expect no match abcccd
# Perl gets some of these wrong
/(?>.(*ACCEPT))*?5/ abcde
/(.(*ACCEPT))*?5/ abcde
/(.(*ACCEPT))5/ abcde
/(.(*ACCEPT))*5/ abcde
/A\NB./B ACBD\= Expect no match A\nB ACB\n
/A\NB./Bs ACBD ACB\n\= Expect no match A\nB
/A\NB/newline=crlf A\nB A\rB\= Expect no match A\r\nB
/\R+b/B
/\R+\n/B
/\R+\d/B
/\d*\R/B
/\s*\R/B \x20\x0a \x20\x0d \x20\x0d\x0a
/\S*\R/B a\x0a
/X\h*\R/B X\x20\x0a
/X\H*\R/B X\x0d\x0a
/X\H+\R/B X\x0d\x0a
/X\H++\R/B\= Expect no match X\x0d\x0a
/(?<=abc)def/ abc\=ph
/abc$/ abc abc\=ps abc\=ph
/abc$/m abc abc\n abc\=ph abc\n\=ph abc\=ps abc\n\=ps
/abc\z/ abc abc\=ps abc\=ph
/abc\Z/ abc abc\=ps abc\=ph
/abc\b/ abc abc\=ps abc\=ph
/abc\B/ abc\=ps abc\=ph\= Expect no match abc
/.+/\= Bad offsets abc\=offset=4 abc\=offset=-4\= Valid data abc\=offset=0 abc\=offset=1 abc\=offset=2\= Expect no match abc\=offset=3
/^\cģ/
/(?P<abn>(?P=abn)xxx)/B
/(a\1z)/B
/(?P<abn>(?P=abn)(?<badstufxxx)/B
/(?P<abn>(?P=axn)xxx)/B
/(?P<abn>(?P=axn)xxx)(?<axn>yy)/B
# These tests are here because Perl gets the first one wrong.
/(\R*)(.)/s \r\n \r\r\n\n\r \r\r\n\n\r\n
/(\R)*(.)/s \r\n \r\r\n\n\r \r\r\n\n\r\n
/((?>\r\n|\n|\x0b|\f|\r|\x85)*)(.)/s \r\n \r\r\n\n\r \r\r\n\n\r\n
# -------------
/^abc$/B
/^abc$/Bm
/^(a)*+(\w)/ aaaaX\= Expect no match aaaa
/^(?:a)*+(\w)/ aaaaX\= Expect no match aaaa
/(a)++1234/IB
/([abc])++1234/I
/(?<=(abc)+)X/
/(^ab)/I
/(^ab)++/I
/(^ab|^)+/I
/(^ab|^)++/I
/(?:^ab)/I
/(?:^ab)++/I
/(?:^ab|^)+/I
/(?:^ab|^)++/I
/(.*ab)/I
/(.*ab)++/I
/(.*ab|.*)+/I
/(.*ab|.*)++/I
/(?:.*ab)/I
/(?:.*ab)++/I
/(?:.*ab|.*)+/I
/(?:.*ab|.*)++/I
/(?=a)[bcd]/I
/((?=a))[bcd]/I
/((?=a))+[bcd]/I
/((?=a))++[bcd]/I
/(?=a+)[bcd]/Ii
/(?=a+?)[bcd]/Ii
/(?=a++)[bcd]/Ii
/(?=a{3})[bcd]/Ii
/(abc)\1+/
# Perl doesn't get these right IMO (the 3rd is PCRE2-specific)
/(?1)(?:(b(*ACCEPT))){0}/ b
/(?1)(?:(b(*ACCEPT))){0}c/ bc\= Expect no match b
/(?1)(?:((*ACCEPT))){0}c/ c c\=notempty
/^.*?(?(?=a)a|b(*THEN)c)/\= Expect no match ba
/^.*?(?(?=a)a|bc)/ ba
/^.*?(?(?=a)a(*THEN)b|c)/\= Expect no match ac
/^.*?(?(?=a)a(*THEN)b)c/\= Expect no match ac
/^.*?(a(*THEN)b)c/\= Expect no match aabc
/^.*? (?1) c (?(DEFINE)(a(*THEN)b))/x aabc
/^.*?(a(*THEN)b|z)c/ aabc
/^.*?(z|a(*THEN)b)c/ aabc
# These are here because they are not Perl-compatible; the studying means the# mark is not seen.
/(*MARK:A)(*SKIP:B)(C|X)/mark C\= Expect no match D
/(*:A)A+(*SKIP:A)(B|Z)/mark\= Expect no match AAAC
# ----------------------------
"(?=a*(*ACCEPT)b)c" c c\=notempty
/(?1)c(?(DEFINE)((*ACCEPT)b))/ c c\=notempty
/(?>(*ACCEPT)b)c/ c\= Expect no match c\=notempty
/(?:(?>(a)))+a%/allaftertext %aa%
/(a)b|ac/allaftertext ac\=ovector=1
/(a)(b)x|abc/allaftertext abc\=ovector=2
/(a)bc|(a)(b)\2/ abc\=ovector=1 abc\=ovector=2 aba\=ovector=1 aba\=ovector=2 aba\=ovector=3 aba\=ovector=4
/(?(DEFINE)(a(?2)|b)(b(?1)|a))(?:(?1)|(?2))/I
/(a(?2)|b)(b(?1)|a)(?:(?1)|(?2))/I
/(a(?2)|b)(b(?1)|a)(?1)(?2)/I
/(abc)(?1)/I
/(?:(foo)|(bar)|(baz))X/allcaptures bazfooX foobazbarX barfooX bazX foobarbazX bazfooX\=ovector=0 bazfooX\=ovector=1 bazfooX\=ovector=2 bazfooX\=ovector=3
/(?=abc){3}abc/B
/(?=abc)+abc/B
/(?=abc)++abc/B
/(?=abc){0}xyz/B
/(?=(a))?./B
/(?=(a))??./B
/^(?=(a)){0}b(?1)/B
/(?(DEFINE)(a))?b(?1)/B
/^(?=(?1))?[az]([abc])d/B
/^(?!a){0}\w+/B
/(?<=(abc))?xyz/B
/[:a[:abc]b:]/B
/^(a(*:A)(d|e(*:B))z|aeq)/auto_callout adz aez aeqwerty
/.(*F)/\= Expect no match abc\=ph
/\btype\b\W*?\btext\b\W*?\bjavascript\b/I
/\btype\b\W*?\btext\b\W*?\bjavascript\b|\burl\b\W*?\bshell:|<input\b.*?\btype\b\W*?\bimage\b|\bonkeyup\b\W*?\=/I
/a(*SKIP)c|b(*ACCEPT)|/I,aftertext a
/a(*SKIP)c|b(*ACCEPT)cd(*ACCEPT)|x/I ax
'a*(*ACCEPT)b'aftertext abc\=notempty_atstart bbb\=notempty_atstart\= Expect no match \=notempty_atstart
/(*ACCEPT)a/I,aftertext bax
/z(*ACCEPT)a/I,aftertext baxzbx
/^(?>a+)(?>(z+))\w/B aaaazzzzb\= Expect no match aazz
/(.)(\1|a(?2))/ bab
/\1|(.)(?R)\1/ cbbbc
/(.)((?(1)c|a)|a(?2))/\= Expect no match baa
/(?P<abn>(?P=abn)xxx)/B
/(a\1z)/B
/^a\x41z/alt_bsux,allow_empty_class,match_unset_backref,dupnames aAz\= Expect no match ax41z
/^a[m\x41]z/alt_bsux,allow_empty_class,match_unset_backref,dupnames aAz
/^a\x1z/alt_bsux,allow_empty_class,match_unset_backref,dupnames ax1z
/^a\u0041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames aAz\= Expect no match au0041z
/^a[m\u0041]z/alt_bsux,allow_empty_class,match_unset_backref,dupnames aAz
/^a\u041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames au041z\= Expect no match aAz
/^a\U0041z/alt_bsux,allow_empty_class,match_unset_backref,dupnames aU0041z\= Expect no match aAz /^\u{7a}/alt_bsux u{7a}\= Expect no match zoo
/^\u{7a}/extra_alt_bsux zoo
/\u{}/extra_alt_bsux u{}
/\u{Q12}/extra_alt_bsux --u{Q12}--
/\u{ 12}/extra_alt_bsux --u{ 12}--
/\u{{3}}/extra_alt_bsux --u{{{}--
/(?(?=c)c|d)++Y/B
/(?(?=c)c|d)*+Y/B
/a[\NB]c/ aNc
/a[B-\Nc]/
/a[B\Nc]/
/(a)(?2){0,1999}?(b)/
/(a)(?(DEFINE)(b))(?2){0,1999}?(?2)/
# This test, with something more complicated than individual letters, causes# different behaviour in Perl. Perhaps it disables some optimization; no tag is# passed back for the failures, whereas in PCRE2 there is a tag.
/(A|P)(*:A)(B|P) | (X|P)(X|P)(*:B)(Y|P)/x,mark AABC XXYZ\= Expect no match XAQQ XAQQXZZ AXQQQ AXXQQQ
# Perl doesn't give marks for these, though it does if the alternatives are# replaced by single letters.
/(b|q)(*:m)f|a(*:n)w/mark aw\= Expect no match abc
/(q|b)(*:m)f|a(*:n)w/mark aw\= Expect no match abc
# After a partial match, the behaviour is as for a failure.
/^a(*:X)bcde/mark abc\=ps
# These are here because Perl doesn't return a mark, except for the first.
/(?=(*:x))(q|)/aftertext,mark abc
/(?=(*:x))((*:y)q|)/aftertext,mark abc
/(?=(*:x))(?:(*:y)q|)/aftertext,mark abc
/(?=(*:x))(?>(*:y)q|)/aftertext,mark abc
/(?=a(*:x))(?!a(*:y)c)/aftertext,mark ab
/(?=a(*:x))(?=a(*:y)c|)/aftertext,mark ab
/(..)\1/ ab\=ps aba\=ps abab\=ps
/(..)\1/i ab\=ps abA\=ps aBAb\=ps
/(..)\1{2,}/ ab\=ps aba\=ps abab\=ps ababa\=ps ababab\=ps ababab\=ph abababa\=ps abababa\=ph
/(..)\1{2,}/i ab\=ps aBa\=ps aBAb\=ps AbaBA\=ps abABAb\=ps aBAbaB\=ph abABabA\=ps abaBABa\=ph
/(..)\1{2,}?x/i ab\=ps abA\=ps aBAb\=ps abaBA\=ps abAbaB\=ps abaBabA\=ps abAbABaBx\=ps
/^(..)\1/ aba\=ps
/^(..)\1{2,3}x/ aba\=ps ababa\=ps ababa\=ph abababx ababababx
/^(..)\1{2,3}?x/ aba\=ps ababa\=ps ababa\=ph abababx ababababx
/^(..)(\1{2,3})ab/ abababab
/^\R/ \r\=ps \r\=ph
/^\R{2,3}x/ \r\=ps \r\=ph \r\r\=ps \r\r\=ph \r\r\r\=ps \r\r\r\=ph \r\rx \r\r\rx
/^\R{2,3}?x/ \r\=ps \r\=ph \r\r\=ps \r\r\=ph \r\r\r\=ps \r\r\r\=ph \r\rx \r\r\rx
/^\R?x/ \r\=ps \r\=ph x \rx
/^\R+x/ \r\=ps \r\=ph \r\n\=ps \r\n\=ph \rx
/^a$/newline=crlf a\r\=ps a\r\=ph
/^a$/m,newline=crlf a\r\=ps a\r\=ph
/^(a$|a\r)/newline=crlf a\r\=ps a\r\=ph
/^(a$|a\r)/m,newline=crlf a\r\=ps a\r\=ph
/./newline=crlf \r\=ps \r\=ph
/.{2,3}/newline=crlf \r\=ps \r\=ph \r\r\=ps \r\r\=ph \r\r\r\=ps \r\r\r\=ph
/.{2,3}?/newline=crlf \r\=ps \r\=ph \r\r\=ps \r\r\=ph \r\r\r\=ps \r\r\r\=ph
"AB(C(D))(E(F))?(?(?=\2)(?=\4))" ABCDGHI\=ovector=01
# These are all run as real matches in test 1; here we are just checking the# settings of the anchored and startline bits.
/(?>.*?a)(?<=ba)/I
/(?:.*?a)(?<=ba)/I
/.*?a(*PRUNE)b/I
/.*?a(*PRUNE)b/Is
/^a(*PRUNE)b/Is
/.*?a(*SKIP)b/I
/(?>.*?a)b/Is
/(?>.*?a)b/I
/(?>^a)b/Is
/(?>.*?)(?<=(abcd)|(wxyz))/I
/(?>.*)(?<=(abcd)|(wxyz))/I
"(?>.*)foo"I
"(?>.*?)foo"I
/(?>^abc)/Im
/(?>.*abc)/Im
/(?:.*abc)/Im
/(?:(a)+(?C1)bb|aa(?C2)b)/ aab\=callout_capture
/(?:(a)++(?C1)bb|aa(?C2)b)/ aab\=callout_capture
/(?:(?>(a))(?C1)bb|aa(?C2)b)/ aab\=callout_capture
/(?:(?1)(?C1)x|ab(?C2))((a)){0}/ aab\=callout_capture
/(?1)(?C1)((a)(?C2)){0}/ aab\=callout_capture
/(?:(a)+(?C1)bb|aa(?C2)b)++/ aab\=callout_capture aab\=callout_capture,ovector=1
/(ab)x|ab/ ab\=ovector=0 ab\=ovector=1
/(?<=123)(*MARK:xx)abc/mark xxxx123a\=ph xxxx123a\=ps
/123\Kabc/startchar xxxx123a\=ph xxxx123a\=ps
/^(?(?=a)aa|bb)/auto_callout bb
/(?C1)^(?C2)(?(?C99)(?=(?C3)a(?C4))(?C5)a(?C6)a(?C7)|(?C8)b(?C9)b(?C10))(?C11)/ bb
# Perl seems to have a bug with this one.
/aaaaa(*COMMIT)(*PRUNE)b|a+c/ aaaaaac
# Here are some that Perl treats differently because of the way it handles# backtracking verbs.
/(?!a(*COMMIT)b)ac|ad/ ac ad
/^(?!a(*THEN)b|ac)../ ad\= Expect no match ac
/^(?=a(*THEN)b|ac)/ ac
/\A.*?(?:a|b(*THEN)c)/ ba
/\A.*?(?:a|b(*THEN)c)++/ ba
/\A.*?(?:a|b(*THEN)c|d)/ ba
/(?:(a(*MARK:X)a+(*SKIP:X)b)){0}(?:(?1)|aac)/ aac
/\A.*?(a|b(*THEN)c)/ ba
/^(A(*THEN)B|A(*THEN)D)/ AD
/(?!b(*THEN)a)bn|bnn/ bnn
/(?(?=b(*SKIP)a)bn|bnn)/ bnn
/(?=b(*THEN)a|)bn|bnn/ bnn
# This test causes a segfault with Perl 5.18.0
/^(?=(a)){0}b(?1)/ backgammon
/(?|(?<n>f)|(?<n>b))/I,dupnames
/(?<a>abc)(?<a>z)\k<a>()/IB,dupnames
/a*[bcd]/B
/[bcd]*a/B
# A complete set of tests for auto-possessification of character types, but# omitting \C because it might be disabled (it has its own tests).
/\D+\D \D+\d \D+\S \D+\s \D+\W \D+\w \D+. \D+\R \D+\H \D+\h \D+\V \D+\v \D+\Z \D+\z \D+$/Bx
/\d+\D \d+\d \d+\S \d+\s \d+\W \d+\w \d+. \d+\R \d+\H \d+\h \d+\V \d+\v \d+\Z \d+\z \d+$/Bx
/\S+\D \S+\d \S+\S \S+\s \S+\W \S+\w \S+. \S+\R \S+\H \S+\h \S+\V \S+\v \S+\Z \S+\z \S+$/Bx
/\s+\D \s+\d \s+\S \s+\s \s+\W \s+\w \s+. \s+\R \s+\H \s+\h \s+\V \s+\v \s+\Z \s+\z \s+$/Bx
/\W+\D \W+\d \W+\S \W+\s \W+\W \W+\w \W+. \W+\R \W+\H \W+\h \W+\V \W+\v \W+\Z \W+\z \W+$/Bx
/\w+\D \w+\d \w+\S \w+\s \w+\W \w+\w \w+. \w+\R \w+\H \w+\h \w+\V \w+\v \w+\Z \w+\z \w+$/Bx
/\R+\D \R+\d \R+\S \R+\s \R+\W \R+\w \R+. \R+\R \R+\H \R+\h \R+\V \R+\v \R+\Z \R+\z \R+$/Bx
/\H+\D \H+\d \H+\S \H+\s \H+\W \H+\w \H+. \H+\R \H+\H \H+\h \H+\V \H+\v \H+\Z \H+\z \H+$/Bx
/\h+\D \h+\d \h+\S \h+\s \h+\W \h+\w \h+. \h+\R \h+\H \h+\h \h+\V \h+\v \h+\Z \h+\z \h+$/Bx
/\V+\D \V+\d \V+\S \V+\s \V+\W \V+\w \V+. \V+\R \V+\H \V+\h \V+\V \V+\v \V+\Z \V+\z \V+$/Bx
/\v+\D \v+\d \v+\S \v+\s \v+\W \v+\w \v+. \v+\R \v+\H \v+\h \v+\V \v+\v \v+\Z \v+\z \v+$/Bx
/ a+\D a+\d a+\S a+\s a+\W a+\w a+. a+\R a+\H a+\h a+\V a+\v a+\Z a+\z a+$/Bx
/\n+\D \n+\d \n+\S \n+\s \n+\W \n+\w \n+. \n+\R \n+\H \n+\h \n+\V \n+\v \n+\Z \n+\z \n+$/Bx
/ .+\D .+\d .+\S .+\s .+\W .+\w .+. .+\R .+\H .+\h .+\V .+\v .+\Z .+\z .+$/Bx
/ .+\D .+\d .+\S .+\s .+\W .+\w .+. .+\R .+\H .+\h .+\V .+\v .+\Z .+\z .+$/Bsx
/ \D+$ \d+$ \S+$ \s+$ \W+$ \w+$ \R+$ \H+$ \h+$ \V+$ \v+$ a+$ \n+$ .+$ .+$/Bmx
/(?=a+)a(a+)++a/B
/a+(bb|cc)a+(?:bb|cc)a+(?>bb|cc)a+(?:bb|cc)+a+(aa)a+(?:bb|aa)/B
/a+(bb|cc)?#a+(?:bb|cc)??#a+(?:bb|cc)?+#a+(?:bb|cc)*#a+(bb|cc)?a#a+(?:aa)?/B
/a+(?:bb)?a#a+(?:|||)#a+(?:|b)a#a+(?:|||)?a/B
/[ab]*/B aaaa
/[ab]*?/B aaaa
/[ab]?/B aaaa
/[ab]??/B aaaa
/[ab]+/B aaaa
/[ab]+?/B aaaa
/[ab]{2,3}/B aaaa
/[ab]{2,3}?/B aaaa
/[ab]{2,}/B aaaa
/[ab]{2,}?/B aaaa
/\d+\s{0,5}=\s*\S?=\w{0,4}\W*/B
/[a-d]{5,12}[e-z0-9]*#[^a-z]+[b-y]*a[2-7]?[^0-9a-z]+/B
/[a-z]*\s#[ \t]?\S#[a-c]*\S#[C-G]+?\d#[4-8]*\D#[4-9,]*\D#[!$]{0,5}\w#[M-Xf-l]+\W#[a-c,]?\W/B
/a+(aa|bb)*c#a*(bb|cc)*a#a?(bb|cc)*d#[a-f]*(g|hh)*f/B
/[a-f]*(g|hh|i)*i#[a-x]{4,}(y{0,6})*y#[a-k]+(ll|mm)+n/B
/[a-f]*(?>gg|hh)+#[a-f]*(?>gg|hh)?#[a-f]*(?>gg|hh)*a#[a-f]*(?>gg|hh)*h/B
/[a-c]*d/IB
/[a-c]+d/IB
/[a-c]?d/IB
/[a-c]{4,6}d/IB
/[a-c]{0,6}d/IB
# End of special auto-possessive tests
/^A\o{1239}B/ A\123B
/^A\oB/
/^A\x{zz}B/
/^A\x{12Z/
/^A\x{/
/[ab]++/B,no_auto_possess
/[^ab]*+/B,no_auto_possess
/a{4}+/B,no_auto_possess
/a{4}+/Bi,no_auto_possess
/[a-[:digit:]]+/
/[A-[:digit:]]+/
/[a-[.xxx.]]+/
/[a-[=xxx=]]+/
/[a-[!xxx!]]+/
/[A-[!xxx!]]+/ A]]]
/[a-\d]+/
/(?<0abc>xx)/
/(?&1abc)xx(?<1abc>y)/
/(?<ab-cd>xx)/
/(?'0abc'xx)/
/(?P<0abc>xx)/
/\k<5ghj>/
/\k'5ghj'/
/\k{2fgh}/
/(?P=8yuki)/
/\g{4df}/
/(?&1abc)xx(?<1abc>y)/
/(?P>1abc)xx(?<1abc>y)/
/\g'3gh'/
/\g<5fg>/
/(?(<4gh>)abc)/
/(?('4gh')abc)/
/(?(4gh)abc)/
/(?(R&6yh)abc)/
/(((a\2)|(a*)\g<-1>))*a?/B
# Test the ugly "start or end of word" compatibility syntax.
/[[:<:]]red[[:>:]]/B little red riding hood a /red/ thing red is a colour put it all on red\= Expect no match no reduction Alfred Winifred
/[a[:<:]] should give error/
/(?=ab\K)/aftertext,allow_lookaround_bsk abcd\=startchar
/abcd/newline=lf,firstline\= Expect no match xx\nxabcd
# Test stack guard external calls.
/(((a)))/stackguard=1
/(((a)))/stackguard=2
/(((a)))/stackguard=3
/(((((a)))))/
# End stack guard tests
/^\w+(?>\s*)(?<=\w)/B
/\othing/
/\o{}/
/\o{whatever}/
/\xthing/
/\x{}/
/\x{whatever}/
/A\8B/
/A\9B/
# This one is here because Perl fails to match "12" for this pattern when the $# is present.
/^(?(?=abc)\w{3}:|\d\d)$/ abc: 12\= Expect no match 123 xyz
# Perl gets this one wrong, giving "a" as the after text for ca and failing to# match for cd.
/(?(?=ab)ab)/aftertext abxxx ca cd
# This should test both paths for processing OP_RECURSE.
/(?(R)a+|(?R)b)/ aaaabcde aaaabcde\=ovector=100
/a*?b*?/ ab
/(*NOTEMPTY)a*?b*?/ ab ba cb
/(*NOTEMPTY_ATSTART)a*?b*?/aftertext ab cdab
/(?(VERSION>=10.0)yes|no)/I yesno
/(?(VERSION>=10.04)yes|no)/ yesno
/(?(VERSION=8)yes){3}/BI,aftertext yesno
/(?(VERSION=8)yes|no){3}/I yesnononoyes\= Expect no match yesno
/(?:(?<VERSION>abc)|xyz)(?(VERSION)yes|no)/I abcyes xyzno\= Expect no match abcno xyzyes
/(?(VERSION<10)yes|no)/
/(?(VERSION>10)yes|no)/
/(?(VERSION>=10.0.0)yes|no)/
/(?(VERSION=10.101)yes|no)/
/abcd/I
/abcd/I,no_start_optimize
/(|ab)*?d/I abd xyd
/(|ab)*?d/I,no_start_optimize abd xyd
/\k<A>*(?<A>aa)(?<A>bb)/match_unset_backref,dupnames aabb
/(((((a)))))/parens_nest_limit=2
/abc/replace=XYZ 123123 123abc123 123abc123abc123 123123\=zero_terminate 123abc123\=zero_terminate 123abc123abc123\=zero_terminate
/abc/g,replace=XYZ 123abc123 123abc123abc123
/abc/replace=X$$Z 123abc123
/abc/g,replace=X$$Z 123abc123abc123
/a(b)c(d)e/replace=X$1Y${2}Z "abcde"
/a(b)c(d)e/replace=X$1Y${2}Z,global "abcde-abcde"
/a(?<ONE>b)c(?<TWO>d)e/replace=X$ONE+${TWO}Z "abcde"
/a(?<ONE>b)c(?<TWO>d)e/g,replace=X$ONE+${TWO}Z "abcde-abcde-"
/abc/replace=a$++ 123abc
/abc/replace=a$bad 123abc
/abc/replace=a${A234567890123456789_123456789012}z 123abc
/abc/replace=a${A23456789012345678901234567890123}z 123abc
/abc/replace=a${bcd 123abc
/abc/replace=a${b+d}z 123abc
/abc/replace=[10]XYZ 123abc123
/abc/replace=[9]XYZ 123abc123
/abc/replace=xyz 1abc2\=partial_hard
/abc/replace=xyz 123abc456 123abc456\=replace=pqr 123abc456abc789 123abc456abc789\=g
/(?<=abc)(|def)/g,replace=<$0> 123abcxyzabcdef789abcpqr
/./replace=$0 a
/(.)(.)/replace=$2+$1 abc
/(?<A>.)(?<B>.)/replace=$B+$A abc
/(.)(.)/g,replace=$2$1 abcdefgh
/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=${*MARK} apple lemon blackberry apple strudel fruitless
/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/replace=${*MARK} sauce, apple lemon blackberry
/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=<$*MARK> apple lemon blackberry apple strudel fruitless
/(*:pear)apple/g,replace=${*MARKING} apple lemon blackberry
/(*:pear)apple/g,replace=${*MARK-time apple lemon blackberry
/(*:pear)apple/g,replace=${*mark} apple lemon blackberry
/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=<$*MARKET> apple lemon blackberry
/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=[22]${*MARK} apple lemon blackberry apple lemon blackberry\=substitute_overflow_length
/(*:pear)apple|(*:orange)lemon|(*:strawberry)blackberry/g,replace=[23]${*MARK} apple lemon blackberry
/abc/ 123abc123\=replace=[9]XYZ 123abc123\=substitute_overflow_length,replace=[9]XYZ 123abc123\=substitute_overflow_length,replace=[6]XYZ 123abc123\=substitute_overflow_length,replace=[1]XYZ 123abc123\=substitute_overflow_length,replace=[0]XYZ
/a(b)c/ 123abc123\=replace=[9]x$1z 123abc123\=substitute_overflow_length,replace=[9]x$1z 123abc123\=substitute_overflow_length,replace=[6]x$1z 123abc123\=substitute_overflow_length,replace=[1]x$1z 123abc123\=substitute_overflow_length,replace=[0]x$1z
"((?=(?(?=(?(?=(?(?=()))))))))" a
"(?(?=)==)(((((((((?=)))))))))"\= Expect no match a
/(a)(b)|(c)/ XcX\=ovector=2,get=1,get=2,get=3,get=4,getall
/x(?=ab\K)/allow_lookaround_bsk xab\=get=0 xab\=copy=0 xab\=getall
/(?<A>a)|(?<A>b)/dupnames a\=ovector=1,copy=A,get=A,get=2 a\=ovector=2,copy=A,get=A,get=2 b\=ovector=2,copy=A,get=A,get=2
/a(b)c(d)/ abc\=ph,copy=0,copy=1,getall
/^abc/info
/^abc/info,no_dotstar_anchor
/.*\d/info,auto_callout\= Expect no match aaa
/.*\d/info,no_dotstar_anchor,auto_callout\= Expect no match aaa
/.*\d/dotall,info
/.*\d/dotall,no_dotstar_anchor,info
/(*NO_DOTSTAR_ANCHOR)(?s).*\d/info
'^(?:(a)|b)(?(1)A|B)' aA123\=ovector=1 aA123\=ovector=2
'^(?:(?<AA>a)|b)(?(<AA>)A|B)' aA123\=ovector=1 aA123\=ovector=2
'^(?<AA>)(?:(?<AA>a)|b)(?(<AA>)A|B)'dupnames aA123\=ovector=1 aA123\=ovector=2 aA123\=ovector=3
'^(?:(?<AA>X)|)(?:(?<AA>a)|b)\k{AA}'dupnames aa123\=ovector=1 aa123\=ovector=2 aa123\=ovector=3
/(?<N111>(?J)(?<N111>1(111111)11|)1|1|)(?(<N111>)1)/
/(?<N>(?J)(?<N>))(?-J)\k<N>/
# Quantifiers are not allowed on condition assertions, but are otherwise# OK in conditions.
/(?(?=0)?)+/
/(?(?=0)(?=00)?00765)/ 00765
/(?(?=0)(?=00)?00765|(?!3).56)/ 00765 456\= Expect no match 356
'^(a)*+(\w)' g g\=ovector=1
'^(?:a)*+(\w)' g g\=ovector=1
# These two pattern showeds up compile-time bugs
"((?2){0,1999}())?"
/((?+1)(\1))/B
# Callouts with string arguments
/a(?C"/
/a(?C"a/
/a(?C"a"/
/a(?C"a"bcde(?C"b")xyz/
/a(?C"a)b""c")/B
/ab(?C" any text with spaces ")cde/B abcde 12abcde
/^a(b)c(?C1)def/ abcdef
/^a(b)c(?C"AB")def/ abcdef
/^a(b)c(?C1)def/ abcdef\=callout_capture
/^a(b)c(?C{AB})def/B abcdef\=callout_capture
/(?C`a``b`)(?C'a''b')(?C"a""b")(?C^a^^b^)(?C%a%%b%)(?C#a##b#)(?C$a$$b$)(?C{a}}b})/B,callout_info
/(?:a(?C`code`)){3}/B
/^(?(?C25)(?=abc)abcd|xyz)/B,callout_info abcdefg xyz123
/^(?(?C$abc$)(?=abc)abcd|xyz)/B abcdefg xyz123
/^ab(?C'first')cd(?C"second")ef/ abcdefg
/(?:a(?C`code`)){3}X/ aaaXY
# Binary zero in callout string# a ( ? C ' x z ' ) b/ 61 28 3f 43 27 78 00 7a 27 29 62/hex,callout_info abcdefgh
/(?(?!)^)/
/(?(?!)a|b)/ bbb\= Expect no match aaa
# JIT gives a different error message for the infinite recursion
"(*NO_JIT)((?2)+)((?1)){" abcd{
# Perl fails to diagnose the absence of an assertion
"(?(?<E>.*!.*)?)"
"X((?2)()*+){2}+"B
"X((?2)()*+){2}"B
/(?<=\bABQ(3(?-7)))/
/(?<=\bABQ(3(?+7)))/
";(?<=()((?3))((?2)))"
# Perl loops on this (PCRE2 used to!)
/(?<=\Ka)/g,aftertext,allow_lookaround_bsk aaaaa
/(?<=\Ka)/altglobal,aftertext,allow_lookaround_bsk aaaaa
/((?2){73}(?2))((?1))/info
/abc/\= Expect no match \[9x!xxx(]{9999}
/(abc)*/ \[abc]{5}
/^/gm \n\n\n
/^/gm,alt_circumflex \n\n\n
/((((((((x))))))))\81/ xx1
/((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((x))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))\80/ xx
/\80/
/A\8B\9C/ A8B9C
/(?x:((?'a')) # comment (with parentheses) and | vertical(?-x:#not a comment (?'b')) # this is a comment ()(?'c')) # not a comment (?'d')/info
/(?|(?'a')(2)(?'b')|(?'a')(?'a')(3))/I,dupnames A23B B32A
# These are some patterns that used to cause buffer overflows or other errors# while compiling.
/.((?2)(?R)|\1|$)()/B
/.((?3)(?R)()(?2)|\1|$)()/B
/(\9*+(?2);\3++()2|)++{/
/\V\x85\9*+((?2)\3++()2)*:2/
/(((?(R)){0,2}) (?'x'((?'R')((?'R')))))/dupnames
/(((?(X)){0,2}) (?'x'((?'X')((?'X')))))/dupnames
/(((?(R)){0,2}) (?'x'((?'X')((?'R')))))/
"(?J)(?'d'(?'d'\g{d}))"
"(?=!((?2)(?))({8(?<=(?1){29}8bbbb\x16\xd\xc6^($(\xa9H4){4}h}?1)B))\x15')"
/A(?'')Z/
"(?J:(?|(?'R')(\k'R')|((?'R'))))"
/(?<=|(\,\$(?73591620449005828816)\xa8.{7}){6}\x09)/
/^(?:(?(1)x|)+)+$()/B
/[[:>:]](?<)/
/((?x)(*:0))#(?'/
/(?C$[$)(?<]/
/(?C$)$)(?<]/
/(?(R))*+/B abcd
/((?x)(?#))#(?'/
/((?x)(?#))#(?'abc')/I
/[[:\\](?<[::]/
/[[:\\](?'abc')[a:]/I
"[[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[:::::::::::::::::[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[[[:::E[[[:[:[[:[:::[[:::E[[[:[:[[:'[:::::E[[[:[::::::[[[:[[[[[[[::E[[[:[::::::[[[:[[[[[[[[:[[::[::::[[:::::::[[:[[[[[[[:[[::[:[[:[~"
/()(?(R)0)*+/B
/(?R-:(?</
/(?R-:(?<)/
/(?(?C{\Q})(?!(?'/
/(?(?C{\Q})(?!(?'abc')))/I
/(?1){3918}(((((0(\k'R'))))(?J)(?'R'(?'R'\3){99})))/I
/(?|(aaa)|(b))\g{1}/I
/(?|(aaa)|(b))(?1)/I
/(?|(aaa)|(b))/I
/(?|(?'a'aaa)|(?'a'b))\k'a'/I
/(?|(?'a'aaa)|(?'a'b))(?'a'cccc)\k'a'/I,dupnames
/ab{3cd/ ab{3cd
/ab{3,cd/ ab{3,cd
/ab{3,4a}cd/ ab{3,4a}cd
/{4,5a}bc/ {4,5a}bc
/\x0{ab}/ \0{ab}
/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/ ababababbbabZXXXX
/.*?a(*PRUNE)b/ aab
/.*?a(*PRUNE)b/s aab
/^a(*PRUNE)b/s\= Expect no match aab
/.*?a(*SKIP)b/ aab
/(?(8000000000/
/((?(R8000000000)))/
/0(?0)|(1)(*THEN)(*SKIP:0)(*FAIL)/\= Expect no match 01
/(?(1)()\983040\2)/
/(*LIMIT_MATCH=)abc/
/(*CRLF)(*LIMIT_MATCH=)abc/
/(?:ab)?(?:ab)(?:ab)/ abab ababab\= Expect no match aba
/((*MARK:A))++a(*SKIP:B)b/\= Expect no match aacb
/(*MARK:a\zb)z/alt_verbnames
/(*:ab\t(d\)c)xxx/
/(*:ab\t(d\)c)xxx/alt_verbnames,mark cxxxz
/(*:A\Qxx)x\EB)x/alt_verbnames,mark x
/(*:A\ExxxB)x/alt_verbnames,mark x
/(*: A \ and #comment \ B)x/x,alt_verbnames,mark x
/(*: A \ and #comment \ B)x/alt_verbnames,mark x
/(*: A \ and #comment \ B)x/x,mark x
/(*: A \ and #comment \ B)x/mark x
/(*:AB)x/alt_verbnames,mark x
/(*:abc\Qpqr)/alt_verbnames
/abc/use_offset_limit 1234abcde\=offset_limit=100 1234abcde\=offset_limit=9 1234abcde\=offset_limit=4 1234abcde\=offset_limit=4,offset=4\= Expect no match 1234abcde\=offset_limit=4,offset=5 1234abcde\=offset_limit=3
/(?<=abc)/use_offset_limit 1234abc\=offset_limit=7\= Expect no match 1234abc\=offset_limit=6
/A/g,replace=-,use_offset_limit XAXAXAXAXA\=offset_limit=4
/abc/\= Expect error 1234abcde\=offset_limit=4
/^\w/m,use_offset_limit \n..\naa\=offset_limit=3 \n..\naa\=offset_limit=4
/abcd/null_context abcd\=null_context\= Expect error - not allowed together abcd\=null_context,find_limits abcd\=allusedtext,startchar
/abcd/replace=w\rx\x82y\o{333}z(\Q12\$34$$\x34\E5$$),substitute_extended abcd
/abcd/replace=w\rx\x82y\o{333}z(\Q12\$34$$\x34\E5$$),substitute_extended,substitute_literal >>abcd<< /abcd/g,replace=\$1$2\,substitute_literal XabcdYabcdZ
/a(bc)(DE)/replace=a\u$1\U$1\E$1\l$2\L$2\Eab\Uab\LYZ\EDone,substitute_extended abcDE
/abcd/replace=xy\kz,substitute_extended abcd
/a(?:(b)|(c))/substitute_extended,replace=X${1:+1:-1}X${2:+2:-2} ab ac ab\=replace=${1:+$1\:$1:$2} ac\=replace=${1:+$1\:$1:$2} >>ac<<\=replace=${1:+$1\:$1:$2},substitute_literal
/a(?:(b)|(c))/substitute_extended,replace=X${1:-1:-1}X${2:-2:-2} ab ac
/(a)/substitute_extended,replace=>${1:+\Q$1:{}$$\E+\U$1}< a
/X(b)Y/substitute_extended XbY\=replace=x${1:+$1\U$1}y XbY\=replace=\Ux${1:+$1$1}y
/a/substitute_extended,replace=${*MARK:+a:b} a
/(abcd)/replace=${1:+xy\kz},substitute_extended abcd
/(abcd)/ abcd\=replace=${1:+xy\kz},substitute_extended
/abcd/substitute_extended,replace=>$1< abcd
/abcd/substitute_extended,replace=>xxx${xyz}<<< abcd
/(?J)(?:(?<A>a)|(?<A>b))/replace=<$A> [a] [b]\= Expect error (a)\=ovector=1
/(a)|(b)/replace=<$1>\= Expect error b
/(aa)(BB)/substitute_extended,replace=\U$1\L$2\E$1..\U$1\l$2$1 aaBB /abcd/replace=wxyz,substitute_matched abcd pqrs
/abcd/g >abcd1234abcd5678<\=replace=wxyz,substitute_matched
/^(o(\1{72}{\"{\\{00000059079}\d*){74}}){19}/I
/((p(?'K/
/((p(?'K/no_auto_capture
/abc/replace=A$3123456789Z abc
/(?<!a{65535}a{5})x/I
/(?<!a{65535})x/I
/(?=a\K)/replace=z,allow_lookaround_bsk BaCaD /(?<=\K.)/g,replace=-,allow_lookaround_bsk ab
/(?'abcdefghijklmnopqrstuvwxyzABCDEFGabcdefghijklmnopqrstuvwxyzABCDEabcdefghijklmnopqrstuvwxyzABCDEabcdefghijklmnopqrstuvwxyzABCDEFGH'toolong)/
/(?'abcdefghijklmnopqrstuvwxyzABCDEFGabcdefghijklmnopqrstuvwxyzABCDEabcdefghijklmnopqrstuvwxyzABCDEabcdefghijklmnopqrstuvwxyzABCDEFG'justright)/
# These two use zero-termination/abcd/max_pattern_length=3
/abc/max_pattern_length=3
# These two, being hex, pass the length/abcdefab/hex,max_pattern_length=3
/abcdef/hex,max_pattern_length=3
# Test compiled length limit/(abcdefg){10}/max_pattern_compiled_length=100
# These patterns used to take a long time to compile
"(.*)((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))"xI
"(?<=a()((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))a)"xI
"(?|()|())(.*)((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))"xI
"(?|()|())(?<=a()((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))((?-2)(?-2))a)"xI
# Test the use of malloc for caching group information when there are more# groups than fit into the on-stack workspace.
/\[()]{1024}/I,expand
# Test minlength capped at 65535
/(A{65000})\1{65000}/I
# Test group scans when numbers are not unique
/(?|()+|(a)+)/BI
/(?|(a)+|()+)/BI
/(?|()|(a))/BI
/(?|(a)|())/BI
# Test CRLF handling in empty string substitutions
/^$/gm,newline=anycrlf,replace=- X\r\n\r\nY
/^$/gm,newline=crlf,replace=- X\r\n\r\nY
/^$/gm,newline=any,replace=- X\r\n\r\nY
"(*ANYCRLF)(?m)^(.*[^0-9\r\n].*|)$"g,replace=NaN 15\r\nfoo\r\n20\r\nbar\r\nbaz\r\n\r\n20
/a[[:punct:]b]/bincode
/a[b[:punct:]]/bincode
/L(?#(|++<!(2)?/B
/L(?#(|++<!(2)?/B,no_auto_possess
/L(?#(|++<!(2)?/B,auto_callout
/L(?#(|++<!(2)?/B,no_auto_possess,auto_callout
/(A*)\E+/B,auto_callout
/()\Q\E*]/B,auto_callout a[bc]d
/\x8a+f|;T?(*:;.'?`(\xeap ){![^()!y*''C*(?';]{1;(\x08)/B,alt_verbnames,dupnames,extended
# Tests for NULL characters in comments and verb "names" and callouts
# /A#B\x00C\x0aZ//41 23 42 00 43 0a 5a/Bx,hex
# /A+#B\x00C\x0a+//41 2b 23 42 00 43 0a 2b/Bx,hex
# /A(*:B\x00W#X\00Y\x0aC)Z//41 28 2a 3a 42 00 57 23 58 00 59 0a 43 29 5a/Bx,hex,alt_verbnames
# /A(*:B\x00W#X\00Y\x0aC)Z//41 28 2a 3a 42 00 57 23 58 00 59 0a 43 29 5a/Bx,hex
# /A(?C{X\x00Y})B//41 28 3f 43 7b 58 00 59 7d 29 42/B,hex
# /A(?#X\x00Y)B//41 28 3f 23 7b 00 7d 29 42/B,hex
# Tests for leading comment in extended patterns
/ (?-x):?/extended
/ (?-x):?/extended
/0b 28 3f 2d 78 29 3a/hex,extended
/#comment(?-x):?/extended
/(8(*:6^\x09x\xa6l\)6!|\xd0:[^:|)\x09d\Z\d{85*m(?'(?<1!)*\W[*\xff]!!h\w]*\xbe;/alt_bsux,alt_verbnames,allow_empty_class,dollar_endonly,extended,multiline,never_utf,no_dotstar_anchor,no_start_optimize
/a|(b)c/replace=>$1<,substitute_unset_empty cat xbcom
/a|(b)c/ cat\=replace=>$1< cat\=replace=>$1<,substitute_unset_empty xbcom\=replace=>$1<,substitute_unset_empty
/a|(b)c/substitute_extended cat\=replace=>${2:-xx}< cat\=replace=>${2:-xx}<,substitute_unknown_unset cat\=replace=>${X:-xx}<,substitute_unknown_unset
/a|(?'X'b)c/replace=>$X<,substitute_unset_empty cat xbcom
/a|(?'X'b)c/replace=>$Y<,substitute_unset_empty cat cat\=substitute_unknown_unset cat\=substitute_unknown_unset,-substitute_unset_empty
/a|(b)c/replace=>$2<,substitute_unset_empty cat cat\=substitute_unknown_unset cat\=substitute_unknown_unset,-substitute_unset_empty
/()()()/use_offset_limit \=ovector=11000000000 \=callout_fail=11000000000 \=callout_fail=1:11000000000 \=callout_data=11000000000 \=callout_data=-11000000000 \=offset_limit=1100000000000000000000 \=copy=11000000000
/(*MARK:A\x00b)/mark abc
/(*MARK:A\x00b)/mark,alt_verbnames abc
/"(*MARK:A" 00 "b)"/mark,hex abc
/"(*MARK:A" 00 "b)"/mark,hex,alt_verbnames abc
/efg/hex
/eff/hex
/effg/hex
/(?J)(?'a'))(?'a')/
/(?<=((?C)0))/ 9010\= Expect no match abc
/aaa/\[abc]{10000000000000000000000000000}\[a]{3}
/\[AB]{6000000000000000000000}/expand
# Hex uses pattern length, not zero-terminated. This tests for overrunning# the given length of a pattern.
/'(*U'/hex
/'(*'/hex
/'('/hex
//hex
# These tests are here because Perl never allows a back reference in a# lookbehind. PCRE2 supports some limited cases.
/([ab])...(?<=\1)z/ a11az b11bz\= Expect no match b11az
/(?|([ab]))...(?<=\1)z/
/([ab])(\1)...(?<=\2)z/ aa11az
/(a\2)(b\1)(?<=\2)/
/(?<A>[ab])...(?<=\k'A')z/ a11az b11bz\= Expect no match b11az
/(?<A>[ab])...(?<=\k'A')(?<A>)z/dupnames
# Perl does not support \g+n
/((\g+1X)?([ab]))+/ aaXbbXa
/ab(?C1)c/auto_callout abc
/'ab(?C1)c'/hex,auto_callout abc
# Perl accepts these, but gives a warning. We can't warn, so give an error.
/[a-[:digit:]]+/ a-a9-a
/[A-[:digit:]]+/ A-A9-A
/[a-\d]+/ a-a9-a
/(?<RA>abc)(?(R)xyz)/B
/(?<R>abc)(?(R)xyz)/B
/(?=.*[A-Z])/I
/()(?<=(?0))/
/(?<!|!(?<!))/
/(?<!|!|!||||||(?<!)||(?<!)!|!||(?<!)!|!(?<!)!|!|!|!||||!!|<!)!|!||||!|/
/{2,2{2,2/use_length
/.>*?\g'0/use_length
/.>*?\g'0/
/{�̈́�̈́�{'{22{2{{2{'{22{{22{2{'{22{2{{2{{222{{2{'{22{2{22{2{'{22{2{{2{'{22{2{22{2{'{'{22{2{22{2{'{22{2{{2{'{22{2{22{2{'{222{2Ą̈́�̈́�{'{22{2{{2{'{22{{11{2{'{22{2{{2{{'{22{2{{2{'{22{{22{1{'{22{2{{2{{222{{2{'{22{2{22{2{'{/auto_callout
//\=get=i00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\=get=i2345678901234567890123456789012,get=i1245678901234567890123456789012
"(?(?C))"
/(?(?(?(?(?(?))))))/
/(?<=(?1))((?s))/anchored
/(*:ab)*/
%(*: (:( svvvvvvvvvv:]*[ Z!*;[]*[^[]*!^[+.+{{2,7}' _\\\\\\\\\\\\\)?.:.. *w////\\\Q\\\\\\\\\\\\\\\T\\\\\+/?/////'+\\\EEE?/////'+/*+/[^K]?]//(w)%never_backslash_c,alt_verbnames,auto_callout
/./newline=crlf \=ph
/(\x0e00\000000\xc)/replace=\P,substitute_extended \x0e00\000000\xc
//replace=0 \=offset=7
/(?<=\G.)/g,replace=+ abc
".+\QX\E+"B,no_auto_possess
".+\QX\E+"B,auto_callout,no_auto_possess
# This one is here because Perl gives an 'unmatched )' error which goes away# if one of the \) sequences is removed - which is weird. PCRE finds it too# complicated to find a minimum matching length.
"()X|((((((((()))))))((((())))))\2())((((((\2\2)))\2)(\22((((\2\2)2))\2)))(2\ZZZ)+:)Z^|91ZiZZnter(ZZ |91Z(ZZ ZZ(\r2Z( or#(\Z2(Z\Z(\2\2)2))\2Z)Z(\22Z((\Z2(Z\Z(\2\2)2))\2Z+:)Z|91Z(ZZ ZZ(\r2Z( or#(\Z2(Z\Z((Z*(\2(Z\':))\0)i|||||||||||||||loZ\2\2)2))\2Z)Z(\22Z((\Z2(Z\Z(\2\2)2))\2Z)))int \)\0nte!rnal errpr\2\\21r(2\ZZZ)+:)Z!|91Z(ZZ ZZ(\r2Z( or#(\Z2(Z\Z(\2\2)2))\2Z)Z(\22Z((\Z2(Z\Z(\2\2)2))\2Z)))int \)\0(2\ZZZ)+:)Z^|91ZiZZnter(ZZ |91Z(ZZ ZZ(\r2Z( or#(\Z2(Z\Z(\2\2)2))\2Z)Z(\22Z((\Z2(Z\Z(\2\2)2))\2Z)))int \)\0(2\ZZZ)+:)Z^)))int \)\0(2\ZZZ)+:)Z^|91ZiZZnter(ZZernZal ZZ(\r2Z( or#(\Z2(Z\Z(\2\2)2))\2Z)Z(\22Z((\Z2(Z\Z(\2\2)2))\2Z)))int \))\ZZ(\r2Z( or#(\Z2(Z\Z(\2\2)2))\2Z)Z(\22Z((\Z2(Z\Z(\2\2)))\2))))((((((\2\2))))))"I
# This checks that new code for handling groups that may match an empty string# works on a very large number of alternatives. This pattern used to provoke a# complaint that it was too complicated.
/(?:\[A|B|C|D|E|F|G|H|I|J|]{200}Z)/expand
# This one used to compile rubbish instead of a compile error, and then# behave unpredictably at match time.
/.+(?(?C'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'))?!XXXX.=X/ .+(?(?C'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'))?!XXXX.=X
/[:[:alnum:]-[[a:lnum:]+/
/((?(?C'')\QX\E(?!((?(?C'')(?!X=X));=)r*X=X));=)/
/((?(?C'')\Q\E(?!((?(?C'')(?!X=X));=)r*X=X));=)/
/abcd/auto_callout abcd\=callout_error=255:2
/()(\g+65534)/
/()(\g+65533)/
/�\x00\x00\x00�(\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\2*\x00k\d+\x00\x00\x00\x00\x00\x00\2*\x00\x00\1*.){36}int^\x00\x00��\x00�(\1{50779}?)J\w2/I
/(a)(b)\2\1\1\1\1/I
/(?<a>a)(?<b>b)\g{b}\g{a}\g{a}\g{a}\g{a}(?<a>xx)(?<b>zz)/I,dupnames
// \=ovector=7777777777
# This is here because Perl matches, even though a COMMIT is encountered# outside of the recursion.
/(?1)(A(*COMMIT)|B)D/ BAXBAD
"(?1){2}(a)"B
"(?1){2,4}(a)"B
# This test differs from Perl for the first subject. Perl ends up with# $1 set to 'B'; PCRE2 has it unset (which I think is right).
/^(?:(?:A| (?:B|B(*ACCEPT)) (?<=(.)) D)(Z))+$/x AZB AZBDZ
# The first of these, when run by Perl, gives the mark 'aa', which is wrong.
'(?>a(*:aa))b|ac' mark ac
'(?:a(*:aa))b|ac' mark ac
/(R?){65}/ (R?){65}
/\[(a)]{60}/expand aaaa
/(?<!\1((?U)1((?U))))(*F)/never_backslash_c,alt_bsux,anchored,extended
/\g{3/
/(a(?C1)(b)(c)d)+/ abcdabcd\=callout_capture
# Perl matches this one, but PCRE does not because (*ACCEPT) clears out any# pending backtracks in the recursion.
/^ (?(DEFINE) (..(*ACCEPT)|...) ) (?1)$/x\= Expect no match abc
# Perl gives no match for this one
/(a(*MARK:m)(*ACCEPT)){0}(?1)/mark abc
/abc/endanchored xyzabc\= Expect no match xyzabcdef\= Expect error xyzabc\=ph
/abc/ xyzabc\=endanchored\= Expect no match xyzabcdef\=endanchored\= Expect error xyzabc\=ps,endanchored
/abc(*ACCEPT)d/endanchored xyzabc\= Expect no match xyzabcdef
/abc|bcd/endanchored xyzabcd\= Expect no match xyzabcdef
/a(*ACCEPT)x|aa/endanchored aaa
# Check auto-anchoring when there is a group that is never obeyed at# the start of a branch.
/(?(DEFINE)(a))^bc/I
/(a){0}.*bc/sI
# This should be anchored, as the condition is always false and there is# no alternative branch.
/(?(VERSION>=999)yes)^bc/I
# This should not be anchored.
/(?(VERSION>=999)yes|no)^bc/I
/(*LIMIT_HEAP=0)xxx/I
/\d{0,3}(*:abc)(?C1)xxx/callout_info
# ----------------------------------------------------------------------
# These are a whole pile of tests that touch lines of code that are not# used by any other tests (at least when these were created).
/^a+?x/i,no_start_optimize,no_auto_possess\= Expect no match aaa
/^[^a]{3,}?x/i,no_start_optimize,no_auto_possess\= Expect no match bbb cc
/^X\S/no_start_optimize,no_auto_possess\= Expect no match X
/^X\W/no_start_optimize,no_auto_possess\= Expect no match X
/^X\H/no_start_optimize,no_auto_possess\= Expect no match X
/^X\h/no_start_optimize,no_auto_possess\= Expect no match X
/^X\V/no_start_optimize,no_auto_possess\= Expect no match X
/^X\v/no_start_optimize,no_auto_possess\= Expect no match X
/^X\h/no_start_optimize,no_auto_possess\= Expect no match XY
/^X\V/no_start_optimize,no_auto_possess\= Expect no match X\n
/^X\v/no_start_optimize,no_auto_possess\= Expect no match XX
/^X.+?/s,no_start_optimize,no_auto_possess\= Expect no match X
/^X\R+?/no_start_optimize,no_auto_possess\= Expect no match XX
/^X\H+?/no_start_optimize,no_auto_possess\= Expect no match X
/^X\h+?/no_start_optimize,no_auto_possess\= Expect no match X
/^X\V+?/no_start_optimize,no_auto_possess\= Expect no match X X\n
/^X\D+?/no_start_optimize,no_auto_possess\= Expect no match X X9
/^X\S+?/no_start_optimize,no_auto_possess\= Expect no match X X\n
/^X\W+?/no_start_optimize,no_auto_possess\= Expect no match X XX
/^X.+?Z/no_start_optimize,no_auto_possess\= Expect no match XY\n
/(*CRLF)^X.+?Z/no_start_optimize,no_auto_possess\= Expect no match XY\r\=ps
/^X\R+?Z/no_start_optimize,no_auto_possess\= Expect no match X\nX X\n\r\n X\n\rY X\n\nY X\n\x{0c}Y
/(*BSR_ANYCRLF)^X\R+?Z/no_start_optimize,no_auto_possess\= Expect no match X\nX X\n\r\n X\n\rY X\n\nY X\n\x{0c}Y
/^X\H+?Z/no_start_optimize,no_auto_possess\= Expect no match XY\t XYY
/^X\h+?Z/no_start_optimize,no_auto_possess\= Expect no match X\t\t X\tY
/^X\V+?Z/no_start_optimize,no_auto_possess\= Expect no match XY\n XYY
/^X\v+?Z/no_start_optimize,no_auto_possess\= Expect no match X\n\n X\nY
/^X\D+?Z/no_start_optimize,no_auto_possess\= Expect no match XY9 XYY
/^X\d+?Z/no_start_optimize,no_auto_possess\= Expect no match X99 X9Y
/^X\S+?Z/no_start_optimize,no_auto_possess\= Expect no match XY\n XYY
/^X\s+?Z/no_start_optimize,no_auto_possess\= Expect no match X\n\n X\nY
/^X\W+?Z/no_start_optimize,no_auto_possess\= Expect no match X.A X++
/^X\w+?Z/no_start_optimize,no_auto_possess\= Expect no match Xa. Xaa
/^X.{1,3}Z/s,no_start_optimize,no_auto_possess\= Expect no match Xa.bd
/^X\h+Z/no_start_optimize,no_auto_possess\= Expect no match X\t\t X\tY
/^X\V+Z/no_start_optimize,no_auto_possess\= Expect no match XY\n XYY
/^(X(*THEN)Y|AB){0}(?1)/ ABX\= Expect no match XAB
/^(?!A(?C1)B)C/ ABC\=callout_error=1,no_jit
/^(?!A(?C1)B)C/no_start_optimize ABC\=callout_error=1
/^(?(?!A(?C1)B)C)/ ABC\=callout_error=1
# ----------------------------------------------------------------------
/[a b c]/BxxI
/[a b c]/BxxxI
/[a b c]/B,extended_more
/[ a b c ]/B,extended_more
/[a b](?xx: [ 12 ] (?-xx:[ 34 ]) )y z/B
# Unsetting /x also unsets /xx
/[a b](?xx: [ 12 ] (?-x:[ 34 ]) )y z/B
/(a)(?-n:(b))(c)/nB
# ----------------------------------------------------------------------# These test the dangerous PCRE2_EXTRA_BAD_ESCAPE_IS_LITERAL option.
/\j\x{z}\o{82}\L\uabcd\u\U\g{\g/B,\bad_escape_is_literal
/\N{\c/IB,bad_escape_is_literal
/[\j\x{z}\o\gAb\g]/B,bad_escape_is_literal
/[Q-\N]/B,bad_escape_is_literal
/[\s-_]/bad_escape_is_literal
/[_-\s]/bad_escape_is_literal
/[\B\R\X]/B
/[\B\R\X]/B,bad_escape_is_literal
/[A-\BP-\RV-\X]/B
/[A-\BP-\RV-\X]/B,bad_escape_is_literal
# ----------------------------------------------------------------------
/a\b(c/literal a\\b(c
/a\b(c/literal,caseless a\\b(c a\\B(c
/a\b(c/literal,firstline XYYa\\b(c\= Expect no match X\na\\b(c
/a\b?c/literal,use_offset_limit XXXXa\\b?c\=offset_limit=4\= Expect no match XXXXa\\b?c\=offset_limit=3
/a\b(c/literal,anchored,endanchored a\\b(c\= Expect no match Xa\\b(c a\\b(cX Xa\\b(cX
//literal,extended
/a\b(c/literal,auto_callout,no_start_optimize XXXXa\\b(c
/a\b(c/literal,auto_callout XXXXa\\b(c
/(*CR)abc/literal (*CR)abc
/cat|dog/I,match_word the cat sat\= Expect no match caterpillar snowcat syndicate
/(cat)|dog/I,match_line,literal (cat)|dog\= Expect no match the cat sat caterpillar snowcat syndicate
/a whole line/match_line,multiline Rhubarb \na whole line\n custard\= Expect no match Not a whole line
# Perl gets this wrong, failing to capture 'b' in group 1.
/^(b+|a){1,2}?bc/ bbc # And again here, for the "babc" subject string.
/^(b*|ba){1,2}?bc/ babc bbabc bababc\= Expect no match bababbc babababc
/[[:digit:]-a]/
/[[:digit:]-[:print:]]/
/[\d-a]/
/[\H-z]/
/[\d-[:print:]]/
# Perl gets the second of these wrong, giving no match.
"(?<=(a))\1?b"I ab aaab
"(?=(a))\1?b"I ab aaab # JIT does not support callout_extra /(*NO_JIT)(a+)b/auto_callout,no_start_optimize,no_auto_possess\= Expect no match aac\=callout_extra /(*NO_JIT)a+(?C'XXX')b/no_start_optimize,no_auto_possess\= Expect no match aac\=callout_extra
/\n/firstline xyz\nabc
/\nabc/firstline xyz\nabc
/\x{0a}abc/firstline,newline=crlf\= Expect no match xyz\r\nabc
/[abc]/firstline\= Expect no match \na # These tests are matched in test 1 as they are Perl compatible. Here we are# looking at what does and does not get auto-possessified.
/(?(DEFINE)(?<optional_a>a?))^(?&optional_a)a$/B
/(?(DEFINE)(?<optional_a>a?)X)^(?&optional_a)a$/B /^(a?)b(?1)a/B
/^(a?)+b(?1)a/B
/^(a?)++b(?1)a/B
/^(a?)+b/B
/(?=a+)a(a+)++b/B
/(?<=(?=.){4,5}x)/B
# Perl behaves differently with these when optimization is turned off
/a(*PRUNE:X)bc|qq/mark,no_start_optimize\= Expect no match axy
/a(*THEN:X)bc|qq/mark,no_start_optimize\= Expect no match axy
/(?^x-i)AB/
/(?^-i)AB/
/(?x-i-i)/
/(?(?=^))b/I abc
/(?(?=^)|)b/I abc
/(?(?=^)|^)b/I bbc\= Expect no match abc
/(?(1)^|^())/I
/(?(1)^())b/I
/(?(1)^())+b/I,aftertext abc
/(?(1)^()|^)+b/I,aftertext bbc \= Expect no match abc
/(?(1)^()|^)*b/I,aftertext bbc abc xbc
/(?(1)^())+b/I,aftertext abc
/(?(1)^a()|^a)+b/I,aftertext abc \= Expect no match bbc
/(?(1)^|^(a))+b/I,aftertext abc \= Expect no match bbc
/(?(1)^a()|^a)*b/I,aftertext abc bbc xbc
/a(b)c|xyz/g,allvector,replace=<$0> abcdefabcpqr\=ovector=4 abxyz\=ovector=4 abcdefxyz\=ovector=4 /a(b)c|xyz/allvector abcdef\=ovector=4 abxyz\=ovector=4
/a(b)c|xyz/g,replace=<$0>,substitute_callout abcdefabcpqr abxyzpqrabcxyz 12abc34xyz99abc55\=substitute_stop=2 12abc34xyz99abc55\=substitute_skip=1 12abc34xyz99abc55\=substitute_skip=2
/a(b)c|xyz/g,replace=<$0> abcdefabcpqr abxyzpqrabcxyz 12abc34xyz\=substitute_stop=2 12abc34xyz\=substitute_skip=1
/a(b)c|xyz/replace=<$0> abcdefabcpqr 12abc34xyz\=substitute_skip=1 12abc34xyz\=substitute_stop=1
/abc\rdef/ abc\ndef
/abc\rdef\x{0d}xyz/escaped_cr_is_lf abc\ndef\rxyz\= Expect no match abc\ndef\nxyz
/(?(*ACCEPT)xxx)/
/(?(*atomic:xx)xxx)/
/(?(*script_run:xxx)zzz)/
/foobar/ the foobar thing\=copy_matched_subject the foobar thing\=copy_matched_subject,zero_terminate
/foobar/g the foobar thing foobar again\=copy_matched_subject
/(*:XX)^abc/I
/(*COMMIT:XX)^abc/I
/(*ACCEPT:XX)^abc/I
/abc/replace=xyz abc\=null_context
/abc/replace=xyz,substitute_callout abc \= Expect error message abc\=null_context
/\[()]{65535}()/expand
/\[()]{65535}(?<A>)/expand
/a(?:(*ACCEPT))??bc/ abc axy
/a(*ACCEPT)??bc/ abc axy
/a(*ACCEPT:XX)??bc/mark abc axy
/(*:\)?/
/(*:\Q \E){5}/alt_verbnames
/(?=abc)/I
/(?|(X)|(XY))\1abc/I
/(?|(a)|(bcde))(c)\2/I
/(?|(a)|(bcde))(c)\1/I
/(?|(?'A'a)|(?'A'bcde))(?'B'c)\k'B'(?'A')/I,dupnames
/(?|(?'A'a)|(?'A'bcde))(?'B'c)\k'A'(?'A')/I,dupnames
/((a|)+)+Z/I
/((?=a))[abcd]/I
/A(?:(*ACCEPT))?B/info
/(A(*ACCEPT)??B)C/ ABC AXY
/(?<=(?<=a)b)c.*/I abc\=ph\= Expect no match xbc\=ph
/(?<=ab)c.*/I abc\=ph\= Expect no match xbc\=ph
/(?<=a(?<=a|a)c)/I
/(?<=a(?<=a|ba)c)/I
/(?<=(?<=a)b)(?<!abcd)/I
/(?<=(?<=a)b)(?<!abcd)(?<=(?<=a)bcde)/I
# Addition overflow/( {32742} {42})(?<!\1{65481})/
# Multiplication overflow/(X{65535})(?<=\1{32770})/
# ---- Non-atomic assertion tests ----
# Expect error: not allowed as a condition/(?(*napla:xx)bc)/
/\A(*pla:.*\b(\w++))(?>.*?\b\1\b){3}/ word1 word3 word1 word2 word3 word2 word2 word1 word3 word4
/\A(*napla:.*\b(\w++))(?>.*?\b\1\b){3}/ word1 word3 word1 word2 word3 word2 word2 word1 word3 word4
/\A(?*.*\b(\w++))(?>.*?\b\1\b){3}/ word1 word3 word1 word2 word3 word2 word2 word1 word3 word4
/(*plb:(.)..|(.)...)(\1|\2)/ abcdb\=offset=4 abcda\=offset=4
/(*naplb:(.)..|(.)...)(\1|\2)/ abcdb\=offset=4 abcda\=offset=4 /(?<*(.)..|(.)...)(\1|\2)/ abcdb\=offset=4 abcda\=offset=4 /(*non_atomic_positive_lookahead:ab)/B /(*non_atomic_positive_lookbehind:ab)/B
/(*pla:ab+)/B
/(*napla:ab+)/B
/(*napla:)+/
/(*naplb:)+/
/(*napla:^x|^y)/I
/(*napla:abc|abd)/I
/(*napla:a|(.)(*ACCEPT)zz)\1../ abcd /(*napla:a(*ACCEPT)zz|(.))\1../ abcd /(*napla:a|(*COMMIT)(.))\1\1/ aabc\= Expect no match abbc
/(*napla:a|(.))\1\1/ aabc abbc
/(*naplb:ab?c|PQ).../g abcdefgacxyzPQR123
# ----
# Expect error (recursion => not fixed length)/(\2)((?=(?<=\1)))/
/c*+(?<=[bc])/ abc\=ph ab\=ph abc\=ps ab\=ps
/c++(?<=[bc])/ abc\=ph ab\=ph
/(?<=(?=.(?<=x)))/ abx ab\=ph bxyz xyz /\z/ abc\=ph abc\=ps /\Z/ abc\=ph abc\=ps abc\n\=ph abc\n\=ps
/(?![ab]).*/ ab\=ph
/c*+/ ab\=ph,offset=2
/\A\s*(a|(?:[^`]{28500}){4})/I a
/\A\s*((?:[^`]{28500}){4})/I
/\A\s*((?:[^`]{28500}){4}|a)/I a
/(?<A>a)(?(<A>)b)((?<=b).*)/B
/(?(1)b)((?<=b).*)/B
/(?(R1)b)((?<=b).*)/B
/(?(DEFINE)b)((?<=b).*)/B
/(?(VERSION=10.3)b)((?<=b).*)/B
/[aA]b[cC]/IB
/[cc]abcd/I
/[Cc]abcd/I
/[c]abcd/I
/(?:c|C)abcd/I
/(a)?a/I manm
/^(?|(\*)(*napla:\S*_(\2?+.+))|(\w)(?=\S*_(\2?+\1)))+_\2$/ *abc_12345abc
/^(?|(\*)(*napla:\S*_(\3?+.+))|(\w)(?=\S*_((\2?+\1))))+_\2$/ *abc_12345abc
/^((\1+)(?C)|\d)+133X$/ 111133X\=callout_capture
/abc/replace=xyz,substitute_replacement_only 123abc456
/a(?<ONE>b)c(?<TWO>d)e/g,replace=X$ONE+${TWO}Z,substitute_replacement_only "abcde-abcde-" /a(b)c|xyz/g,replace=<$0>,substitute_callout,substitute_replacement_only abcdefabcpqr abxyzpqrabcxyz 12abc34xyz99abc55\=substitute_stop=2 12abc34xyz99abc55\=substitute_skip=1 12abc34xyz99abc55\=substitute_skip=2
/a(..)d/replace=>$1<,substitute_matched xyzabcdxyzabcdxyz xyzabcdxyzabcdxyz\=ovector=2\= Expect error xyzabcdxyzabcdxyz\=ovector=1
/a(..)d/g,replace=>$1<,substitute_matched xyzabcdxyzabcdxyz xyzabcdxyzabcdxyz\=ovector=2\= Expect error xyzabcdxyzabcdxyz\=ovector=1 xyzabcdxyzabcdxyz\=ovector=1,substitute_unset_empty
/55|a(..)d/g,replace=>$1<,substitute_matched xyz55abcdxyzabcdxyz\=ovector=2,substitute_unset_empty\= Expect error xyz55abcdxyzabcdxyz\=ovector=2
/55|a(..)d/replace=>$1<,substitute_matched xyz55abcdxyzabcdxyz\=ovector=2,substitute_unset_empty
/55|a(..)d/replace=>$1< xyz55abcdxyzabcdxyz\=ovector=2,substitute_unset_empty
/55|a(..)d/g,replace=>$1< xyz55abcdxyzabcdxyz\=ovector=2,substitute_unset_empty /abc/replace=,caseless XabcY XABCY
/abc/replace=[4],caseless XabcY XABCY
/abc/replace=*,caseless XabcY XABCY XabcY\=replace=
# Expect non-fixed-length error
"(?<=X(?(DEFINE)(.*))(?1))."
/\sxxx\s/tables=1\= Expect no match AB\x{85}xxx\x{a0}XYZ
/\sxxx\s/tables=2 AB\x{85}xxx\x{a0}XYZ
/^\w+/tables=2 École
/^\w+/tables=3 École
#loadtables ./testbtables
/^\w+/tables=3 École
/"(*MARK:>" 00 "<).."/hex,mark,no_start_optimize AB A\=ph \= Expect no match A
/"(*MARK:>" 00 "<).(?C1)."/hex,mark,no_start_optimize AB
/(?(VERSION=0.0/
# Perl has made \K in lookarounds an error. PCRE2 now rejects as well, unless# explicitly authorized.
/(?=a\Kb)ab/
/(?=a\Kb)ab/allow_lookaround_bsk ab
/(?!a\Kb)ac/
/(?!a\Kb)ac/allow_lookaround_bsk ac /^abc(?<=b\Kc)d/
/^abc(?<=b\Kc)d/allow_lookaround_bsk abcd
/^abc(?<!b\Kq)d/
/^abc(?<!b\Kq)d/,allow_lookaround_bsk abcd # ---------
# Tests for zero-length NULL to be treated as an empty string.
// \=null_subject\= Expect error abc\=null_subject
//replace=[20] abc\=null_replacement \=null_subject \=null_replacement
/X*/g,replace=xy\= Expect error >X<\=null_replacement
/X+/replace=[20] >XX<\=null_replacement
# ---------
/[Aa]{2}/BI aabcd
/A{2}/iBI aabcd
/[Aa]{2,3}/BI aabcd
-- \[X]{-10} # Check imposition of maximum by match_data_create().
/abcd/ abcd\=ovector=65536
# Use recurse to test \K and Mark in atomic scope./(?>this line\s*((?R)|)\K)/ this line this line this line
/(?>this line\s*((?R)|)(*MARK:A))/ this line this line this line # Check use of NULL pattern with zero length.
//null_pattern,use_length abc //null_pattern
/bad null pattern/null_pattern,use_length
/bad null pattern/null_pattern
# -------- Variable length lookbehinds --------/12345(?<=\d{1,256})X/
/(?<=(\d{1,256}))X/max_varlookbehind=256 12345XYZ
/12345(?<=a?bc)X/max_varlookbehind=0
/12345(?<=abc)X/max_varlookbehind=0
/(?<!( {65054}){9,44965})/
/(?(?<!|(|a)))/ aaaa\=get=0
/(?(?<!|a?))/ aaaa\=get=0
# --------
/(?<=(()()()()()()()()()()()()()(()()()()(())()()()()(()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()(())()()()()(()()()()()()(()()()()()()()()()()()()()()()()()()()()()(())()()()()(()()()()()()()()()()()()()(()()()()()()()()()()()()()(()())))))))))/
/(?<!( {65054}){0,44965})/auto_callout
/A+{,3}/
/(\g{+1}Z|(A))+/ BAAZCD ZAAAZAZAZAACD
# This doesn't work in Perl (though I think it used to)
/^(?=.*(?=(([A-Z]).*(?(1)\1)))(?!.+\2)){26}/i The quick brown fox jumps over the lazy dog. Jackdaws love my big sphinx of quartz. Pack my box with five dozen liquor jugs.\= Expect no match The quick brown fox jumps over the lazy cat. Hackdaws love my big sphinx of quartz. Pack my fox with five dozen liquor jugs. # These are different to Perl because of the different capturing in repeating# groups.
/((foo)|(bar))*/ foobar
/(?:(f)(o)(o)|(b)(a)(r))*/ foobar
/((Z)+|A)*/ ZABCDEFG
/(?:(?P=same)?(?:(?P<same>a)|(?P<same>b))(?P=same))+/g,dupnames bbbaaabaabb
# --------
//anchored, firstline \x0a
//anchored,firstline,no_start_optimize \x0a
//firstline \x0a abc\x0adef
# This test is currently broken in the interpreter# /|a(?0)/endanchored# aaaa
/A +/extended
/(*ACCEPT)+/B,auto_callout
/a\z/ a a\=noteol
# This matches a character that only exists once in the subject, sort of like a# hypothetical "(.)(?<!\1.+)(?!.*\1)". That has unlimited variable length# lookbehind, so is invalid. This pattern doesn't work in Perl 5.38.0.
/\G(?:(?=(\1.|)(.))){1,13}?(?!.*\2.*\2)\1\K\2/g aaabcccdeee
/|(?0)./endanchored abcd
/|a(?0)/endanchored aaaa
/(?:|(?0).)(?(R)|\z)/ abcd
/a?(?=b(*COMMIT)c|)d/I bd
/(?=b(*COMMIT)c|)d/I bd
/a?(?=b(*COMMIT)c|)d/I,no_start_optimize bd
/(?=b(*COMMIT)c|)d/I,no_start_optimize bd
/a?(?=bc|)d/I,auto_callout bd /a?(?=bc|)\bd/I bd
/(?0)/ abc\=disable_recurseloop_check,match_limit=100
/(a(?1)z||(?1)++)$/ abcd\=disable_recurseloop_check
/(((?<=123?456456|ABC)))(?<=\2)../ ABCDEFG 12345645678910 # This test is crashing Perl 5.38.2.
/[^\S\W]{6}/ .abc def..
# End of testinput2
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