/(a)b|/I
/abc/I
abc
defabc
\Aabc
*** Failers
\Adefabc
ABC
/^abc/I
abc
\Aabc
*** Failers
defabc
\Adefabc
/a+bc/I
/a*bc/I
/a{3}bc/I
/(abc|a+z)/I
/^abc$/I
abc
*** Failers
def\nabc
/ab\hdef/X
/(?X)ab\hdef/X
/x{5,4}/
/z{65536}/
/[abcd/
/(?X)[\B]/
/[z-a]/
/^*/
/(abc/
/(?# abc/
/(?z)abc/
/.*b/I
/.*?b/I
/cat|dog|elephant/I
this sentence eventually mentions a cat
this sentences rambles on and on for a while and then reaches elephant
/cat|dog|elephant/IS
this sentence eventually mentions a cat
this sentences rambles on and on for a while and then reaches elephant
/cat|dog|elephant/IiS
this sentence eventually mentions a CAT cat
this sentences rambles on and on for a while to elephant ElePhant
/a|[bcd]/IS
/(a|[^\dZ])/IS
/(a|b)*[\s]/IS
/(ab\2)/
/{4,5}abc/
/(a)(b)(c)\2/I
abcb
\O0abcb
\O3abcb
\O6abcb
\O9abcb
\O12abcb
/(a)bc|(a)(b)\2/I
abc
\O0abc
\O3abc
\O6abc
aba
\O0aba
\O3aba
\O6aba
\O9aba
\O12aba
/abc$/IE
abc
*** Failers
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/IA
the quick brown fox
*** Failers
this is a line with the quick brown fox
/ab(?z)cd/
/^abc|def/I
abcdef
abcdef\B
/.*((abc)$|(def))/I
defabc
\Zdefabc
/abc/IP
abc
*** Failers
/^abc|def/IP
abcdef
abcdef\B
/.*((abc)$|(def))/IP
defabc
\Zdefabc
/the quick brown fox/IP
the quick brown fox
*** Failers
The Quick Brown Fox
/the quick brown fox/IPi
the quick brown fox
The Quick Brown Fox
/abc.def/IP
*** Failers
abc\ndef
/abc$/IP
abc
abc\n
/(abc)\2/IP
/(abc\1)/IP
abc
/)/
/a[]b/
/[^aeiou ]{3,}/I
co-processors, and for
/<.*>/I
abc<def>ghi<klm>nop
/<.*?>/I
abc<def>ghi<klm>nop
/<.*>/IU
abc<def>ghi<klm>nop
/(?U)<.*>/I
abc<def>ghi<klm>nop
/<.*?>/IU
abc<def>ghi<klm>nop
/={3,}/IU
abc========def
/(?U)={3,}?/I
abc========def
/(?<!bar|cattle)foo/I
foo
catfoo
*** Failers
the barfoo
and cattlefoo
/(?<=a+)b/
/(?<=aaa|b{0,3})b/
/(?<!(foo)a\1)bar/
/(?i)abc/I
/(a|(?m)a)/I
/(?i)^1234/I
/(^b|(?i)^d)/I
/(?s).*/I
/[abcd]/IS
/(?i)[abcd]/IS
/(?m)[xy]|(b|c)/IS
/(^a|^b)/Im
/(?i)(^a|^b)/Im
/(a)(?(1)a|b|c)/
/(?(?=a)a|b|c)/
/(?(1a)/
/(?(1a))/
/(?(?i))/
/(?(abc))/
/(?(?<ab))/
/((?s)blah)\s+\1/I
/((?i)blah)\s+\1/I
/((?i)b)/IDS
/(a*b|(?i:c*(?-i)d))/IS
/a$/I
a
a\n
*** Failers
\Za
\Za\n
/a$/Im
a
a\n
\Za\n
*** Failers
\Za
/\Aabc/Im
/^abc/Im
/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/I
aaaaabbbbbcccccdef
/(?<=foo)[ab]/IS
/(?<!foo)(alpha|omega)/IS
/(?!alphabet)[ab]/IS
/(?<=foo\n)^bar/Im
foo\nbarbar
***Failers
rhubarb
barbell
abc\nbarton
/^(?<=foo\n)bar/Im
foo\nbarbar
***Failers
rhubarb
barbell
abc\nbarton
/(?>^abc)/Im
abc
def\nabc
*** Failers
defabc
/(?<=ab(c+)d)ef/
/(?<=ab(?<=c+)d)ef/
/(?<=ab(c|de)f)g/
/The next three are in testinput2 because they have variable length branches/
/(?<=bullock|donkey)-cart/I
the bullock-cart
a donkey-cart race
*** Failers
cart
horse-and-cart
/(?<=ab(?i)x|y|z)/I
/(?>.*)(?<=(abcd)|(xyz))/I
alphabetabcd
endingxyz
/(?<=ab(?i)x(?-i)y|(?i)z|b)ZZ/I
abxyZZ
abXyZZ
ZZZ
zZZ
bZZ
BZZ
*** Failers
ZZ
abXYZZ
zzz
bzz
/(?<!(foo)a)bar/I
bar
foobbar
*** Failers
fooabar
/This one is here because Perl 5.005_02 doesn't fail it/I
/^(a)?(?(1)a|b)+$/I
*** Failers
a
/This one is here because I think Perl 5.005_02 gets the setting of $1 wrong/I
/^(a\1?){4}$/I
aaaaaa
/These are syntax tests from Perl 5.005/I
/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)/
/(?(1)a|b|c)/
/[a[:xyz:/
/(?<=x+)y/
/a{37,17}/
/abc/\
/abc/\P
/abc/\i
/(a)bc(d)/I
abcd
abcd\C2
abcd\C5
/(.{20})/I
abcdefghijklmnopqrstuvwxyz
abcdefghijklmnopqrstuvwxyz\C1
abcdefghijklmnopqrstuvwxyz\G1
/(.{15})/I
abcdefghijklmnopqrstuvwxyz
abcdefghijklmnopqrstuvwxyz\C1\G1
/(.{16})/I
abcdefghijklmnopqrstuvwxyz
abcdefghijklmnopqrstuvwxyz\C1\G1\L
/^(a|(bc))de(f)/I
adef\G1\G2\G3\G4\L
bcdef\G1\G2\G3\G4\L
adefghijk\C0
/^abc\00def/I
abc\00def\L\C0
/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/IM
/.*X/ID
/.*X/IDs
/(.*X|^B)/ID
/(.*X|^B)/IDs
/(?s)(.*X|^B)/ID
/(?s:.*X|^B)/ID
/\Biss\B/I+
Mississippi
/\Biss\B/I+P
Mississippi
/iss/IG+
Mississippi
/\Biss\B/IG+
Mississippi
/\Biss\B/Ig+
Mississippi
*** Failers
Mississippi\A
/(?<=[Ms])iss/Ig+
Mississippi
/(?<=[Ms])iss/IG+
Mississippi
/^iss/Ig+
ississippi
/.*iss/Ig+
abciss\nxyzisspqr
/.i./I+g
Mississippi
Mississippi\A
Missouri river
Missouri river\A
/^.is/I+g
Mississippi
/^ab\n/Ig+
ab\nab\ncd
/^ab\n/Img+
ab\nab\ncd
/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
\
*** Failers
\N
/|-/I
abcd
-abc
\Nab-c
*** Failers
\Nabc
/a*(b+)(z)(z)/IP
aaaabbbbzzzz
aaaabbbbzzzz\O0
aaaabbbbzzzz\O1
aaaabbbbzzzz\O2
aaaabbbbzzzz\O3
aaaabbbbzzzz\O4
aaaabbbbzzzz\O5
/^.?abcd/IS
/\( # ( at start
(?: # Non-capturing bracket
(?>[^()]+) # Either a sequence of non-brackets (no backtracking)
| # Or
(?R) # Recurse - i.e. nested bracketed string
)* # Zero or more contents
\) # Closing )
/Ix
(abcd)
(abcd)xyz
xyz(abcd)
(ab(xy)cd)pqr
(ab(xycd)pqr
() abc ()
12(abcde(fsh)xyz(foo(bar))lmno)89
*** Failers
abcd
abcd)
(abcd
/\( ( (?>[^()]+) | (?R) )* \) /Ixg
(ab(xy)cd)pqr
1(abcd)(x(y)z)pqr
/\( (?: (?>[^()]+) | (?R) ) \) /Ix
(abcd)
(ab(xy)cd)
(a(b(c)d)e)
((ab))
*** Failers
()
/\( (?: (?>[^()]+) | (?R) )? \) /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:]]/D
/^[[:^alnum:]]/D
/^[[:alpha:]]/D
/^[[:^alpha:]]/D
/[_[:alpha:]]/IS
/^[[:ascii:]]/D
/^[[:^ascii:]]/D
/^[[:blank:]]/D
/^[[:^blank:]]/D
/[\n\x0b\x0c\x0d[:blank:]]/IS
/^[[:cntrl:]]/D
/^[[:digit:]]/D
/^[[:graph:]]/D
/^[[:lower:]]/D
/^[[:print:]]/D
/^[[:punct:]]/D
/^[[:space:]]/D
/^[[:upper:]]/D
/^[[:xdigit:]]/D
/^[[:word:]]/D
/^[[:^cntrl:]]/D
/^[12[:^digit:]]/D
/^[[:^blank:]]/D
/[01[:alpha:]%]/D
/[[.ch.]]/I
/[[=ch=]]/I
/[[:rhubarb:]]/I
/[[:upper:]]/Ii
A
a
/[[:lower:]]/Ii
A
a
/((?-i)[[:lower:]])[[:lower:]]/Ii
ab
aB
*** Failers
Ab
AB
/[\200-\110]/I
/^(?(0)f|b)oo/I
/This one's here because of the large output vector needed/I
/(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\w+)\s+(\270)/I
\O900 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 ABC ABC
/This one's here because Perl does this differently and PCRE can't at present/I
/(main(O)?)+/I
mainmain
mainOmain
/These are all cases where Perl does it differently (nested captures)/I
/^(a(b)?)+$/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))?)+$/I
aabbbbaa
/--------------------------------------------------------------------/I
/#/IxMD
/a#/IxMD
/[\s]/D
/[\S]/D
/a(?i)b/D
ab
aB
*** Failers
AB
/(a(?i)b)/D
ab
aB
*** Failers
AB
/ (?i)abc/IxD
/#this is a comment
(?i)abc/IxD
/123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890/D
/\Q123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890/D
/\Q\E/D
\
/\Q\Ex/D
/ \Q\E/D
/a\Q\E/D
abc
bca
bac
/a\Q\Eb/D
abc
/\Q\Eabc/D
/x*+\w/D
*** Failers
xxxxx
/x?+/D
/x++/D
/x{1,3}+/D
/(x)*+/D
/^(\w++|\s++)*$/I
now is the time for all good men to come to the aid of the party
*** Failers
this is not a line with only words and spaces!
/(\d++)(\w)/I
12345a
*** Failers
12345+
/a++b/I
aaab
/(a++b)/I
aaab
/(a++)b/I
aaab
/([^()]++|\([^()]*\))+/I
((abc(ade)ufh()()x
/\(([^()]++|\([^()]+\))+\)/I
(abc)
(abc(def)xyz)
*** Failers
((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
/(abc){1,3}+/D
/a+?+/I
/a{2,3}?+b/I
/(?U)a+?+/I
/a{2,3}?+b/IU
/x(?U)a++b/D
xaaaab
/(?U)xa++b/D
xaaaab
/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/D
/^x(?U)a+b/D
/^x(?U)(a+)b/D
/[.x.]/I
/[=x=]/I
/[:x:]/I
/\l/I
/\L/I
/\N{name}/I
/\u/I
/\U/I
/[/I
/[a-/I
/[[:space:]/I
/[\s]/IDM
/[[:space:]]/IDM
/[[:space:]abcde]/IDM
/< (?: (?(R) \d++ | [^<>]*+) | (?R)) * >/Ix
<>
<abcd>
<abc <123> hij>
<abc <def> hij>
<abc<>def>
<abc<>
*** Failers
<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|IDM
|\$\<\.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|IDM
/(.*)\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/IiI
/(?=abc)(?i).xyz/I
/(?=a)(?=b)/I
/(?=.)a/I
/((?=abcda)a)/I
/((?=abcda)ab)/I
/()a/I
/(?(1)ab|ac)/I
/(?(1)abz|acz)/I
/(?(1)abz)/I
/(?(1)abz)123/I
/(a)+/I
/(a){2,3}/I
/(a)*/I
/[a]/I
/[ab]/I
/[ab]/IS
/[^a]/I
/\d456/I
/\d456/IS
/a^b/I
/^a/Im
abcde
xy\nabc
*** Failers
xyabc
/c|abc/I
/(?i)[ab]/IS
/[ab](?i)cd/IS
/abc(?C)def/I
abcdef
1234abcdef
*** Failers
abcxyz
abcxyzf
/abc(?C)de(?C1)f/I
123abcdef
/(?C1)\dabc(?C2)def/I
1234abcdef
*** Failers
abcdef
/(?C255)ab/I
/(?C256)ab/I
/(?Cab)xx/I
/(?C12vr)x/I
/abc(?C)def/I
*** Failers
\x83\x0\x61bcdef
/(abc)(?C)de(?C1)f/I
123abcdef
123abcdef\C+
123abcdef\C-
*** Failers
123abcdef\C!1
/(?C0)(abc(?C1))*/I
abcabcabc
abcabc\C!1!3
*** Failers
abcabcabc\C!1!3
/(\d{3}(?C))*/I
123\C+
123456\C+
123456789\C+
/((xyz)(?C)p|(?C1)xyzabc)/I
xyzabc\C+
/(X)((xyz)(?C)p|(?C1)xyzabc)/I
Xxyzabc\C+
/(?=(abc))(?C)abcdef/I
abcdef\C+
/(?!(abc)(?C1)d)(?C2)abcxyz/I
abcxyz\C+
/(?<=(abc)(?C))xyz/I
abcxyz\C+
/a(b+)(c*)(?C1)/I
abbbbbccc\C*1
/a(b+?)(c*?)(?C1)/I
abbbbbccc\C*1
/(?C)abc/I
/(?C)^abc/I
/(?C)a|b/IS
/(?R)/I
/(a|(?R))/I
/(ab|(bc|(de|(?R))))/I
/x(ab|(bc|(de|(?R))))/I
xab
xbc
xde
xxab
xxxab
*** Failers
xyab
/(ab|(bc|(de|(?1))))/I
/x(ab|(bc|(de|(?1)x)x)x)/I
/^([^()]|\((?1)*\))*$/I
abc
a(b)c
a(b(c))d
*** Failers)
a(b(c)d
/^>abc>([^()]|\((?1)*\))*<xyz<$/I
>abc>123<xyz<
>abc>1(2)3<xyz<
>abc>(1(2)3)<xyz<
/(a(?1)b)/D
/(a(?1)+b)/D
/^\W*(?:((.)\W*(?1)\W*\2|)|((.)\W*(?3)\W*\4|\W*.\W*))\W*$/Ii
1221
Satan, oscillate my metallic sonatas!
A man, a plan, a canal: Panama!
Able was I ere I saw Elba.
*** Failers
The quick brown fox
/^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/I
12
(((2+2)*-3)-7)
-12
*** Failers
((2+2)*-3)-7)
/^(x(y|(?1){2})z)/I
xyz
xxyzxyzz
*** Failers
xxyzz
xxyzxyzxyzz
/((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/Ix
<>
<abcd>
<abc <123> hij>
<abc <def> hij>
<abc<>def>
<abc<>
*** Failers
<abc
/(?1)/I
/((?2)(abc)/I
/^(abc)def(?1)/I
abcdefabc
/^(a|b|c)=(?1)+/I
a=a
a=b
a=bc
/^(a|b|c)=((?1))+/I
a=a
a=b
a=bc
/a(?P<name1>b|c)d(?P<longername2>e)/D
abde
acde
/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/D
/(?P<a>a)...(?P=a)bbb(?P>a)d/D
/^\W*(?:(?P<one>(?P<two>.)\W*(?P>one)\W*(?P=two)|)|(?P<three>(?P<four>.)\W*(?P>three)\W*(?P=four)|\W*.\W*))\W*$/Ii
1221
Satan, oscillate my metallic sonatas!
A man, a plan, a canal: Panama!
Able was I ere I saw Elba.
*** Failers
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)/IND
abc
/(?P<one>a)(bc)/IND
abc
/(a)(?P<named>bc)/IND
/(a+)*zz/I
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\M
aaaaaaaaaaaaaz\M
/(aaa(?C1)bbb|ab)/I
aaabbb
aaabbb\C*0
aaabbb\C*1
aaabbb\C*-1
/ab(?P<one>cd)ef(?P<two>gh)/I
abcdefgh
abcdefgh\C1\Gtwo
abcdefgh\Cone\Ctwo
abcdefgh\Cthree
/(?P<Tes>)(?P<Test>)/D
/(?P<Test>)(?P<Tes>)/D
/(?P<Z>zz)(?P<A>aa)/I
zzaa\CZ
zzaa\CA
/(?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]
*** Failers
[]
"\[((?P<elem>\d+)(,(?P>elem))*)?\]"I
[10,20,30,5,5,4,4,2,43,23,4234]
[]
/(a(b(?2)c))?/D
/(a(b(?2)c))*/D
/(a(b(?2)c)){0,2}/D
/[ab]{1}+/D
/((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/Ii
Baby Bjorn Active Carrier - With free SHIPPING!!
/((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/IiS
Baby Bjorn Active Carrier - With free SHIPPING!!
/a*.*b/ISD
/(a|b)*.?c/ISD
/abc(?C255)de(?C)f/D
/abcde/ICD
abcde
abcdfe
/a*b/ICD
ab
aaaab
aaaacb
/a+b/ICD
ab
aaaab
aaaacb
/(abc|def)x/ICD
abcx
defx
abcdefzx
/(ab|cd){3,4}/IC
ababab
abcdabcd
abcdcdcdcdcd
/([ab]{,4}c|xy)/ICD
Note: that { does NOT introduce a quantifier
/([ab]{1,4}c|xy){4,5}?123/ICD
aacaacaacaacaac123
/\b.*/I
ab cd\>1
/\b.*/Is
ab cd\>1
/(?!.bcd).*/I
Xbcd12345
/abcde/I
ab\P
abc\P
abcd\P
abcde\P
the quick brown abc\P
** Failers\P
the quick brown abxyz fox\P
"^(0?[1-9]|[12][0-9]|3[01])/(0?[1-9]|1[012])/(20)?\d\d$"I
13/05/04\P
13/5/2004\P
02/05/09\P
1\P
1/2\P
1/2/0\P
1/2/04\P
0\P
02/\P
02/0\P
02/1\P
** Failers\P
\P
123\P
33/4/04\P
3/13/04\P
0/1/2003\P
0/\P
02/0/\P
02/13\P
/0{0,2}ABC/I
/\d{3,}ABC/I
/\d*ABC/I
/[abc]+DE/I
/[abc]?123/I
123\P
a\P
b\P
c\P
c12\P
c123\P
/^(?:\d){3,5}X/I
1\P
123\P
123X
1234\P
1234X
12345\P
12345X
*** Failers
1X
123456\P
/abc/I>testsavedregex
<testsavedregex
abc
** Failers
bca
/abc/IF>testsavedregex
<testsavedregex
abc
** Failers
bca
/(a|b)/IS>testsavedregex
<testsavedregex
abc
** Failers
def
/(a|b)/ISF>testsavedregex
<testsavedregex
abc
** Failers
def
~<(\w+)/?>(.)*</(\1)>~smgI
<!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>
/^a/IF
/line\nbreak/I
this is a line\nbreak
line one\nthis is a line\nbreak in the second line
/line\nbreak/If
this is a line\nbreak
** Failers
line one\nthis is a line\nbreak in the second line
/line\nbreak/Imf
this is a line\nbreak
** Failers
line one\nthis is a line\nbreak in the second line
/ab.cd/IP
ab-cd
ab=cd
** Failers
ab\ncd
/ab.cd/IPs
ab-cd
ab=cd
ab\ncd
/(?i)(?-i)AbCd/I
AbCd
** Failers
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))
/a(b)c/IPN
abc
/a(?P<name>b)c/IPN
abc
/\x{100}/I
/\x{0000ff}/I
/^((?P<A>a1)|(?P<A>a2)b)/I
/^((?P<A>a1)|(?P<A>a2)b)/IJ
a1b\CA
a2b\CA
** Failers
a1b\CZ\CA
/^(?P<A>a)(?P<A>b)/IJ
ab\CA
/^(?P<A>a)(?P<A>b)|cd/IJ
ab\CA
cd\CA
/^(?P<A>a)(?P<A>b)|cd(?P<A>ef)(?P<A>gh)/IJ
cdefgh\CA
/^((?P<A>a1)|(?P<A>a2)b)/IJ
a1b\GA
a2b\GA
** Failers
a1b\GZ\GA
/^(?P<A>a)(?P<A>b)/IJ
ab\GA
/^(?P<A>a)(?P<A>b)|cd/IJ
ab\GA
cd\GA
/^(?P<A>a)(?P<A>b)|cd(?P<A>ef)(?P<A>gh)/IJ
cdefgh\GA
/(?J)^((?P<A>a1)|(?P<A>a2)b)/I
a1b\CA
a2b\CA
/^(?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 pcre_get_named_substring() produces
a random value. /Ix
/^(?P<A>a) (?J:(?P<B>b)(?P<B>c)) (?P<C>d)/I
a bc d\CA\CB\CC
/^(?P<A>a)?(?(A)a|b)/I
aabc
bc
** Failers
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
/\777/I
/\s*,\s*/IS
\x0b,\x0b
\x0c,\x0d
/^abc/Im
xyz\nabc
xyz\nabc\<lf>
xyz\r\nabc\<lf>
xyz\rabc\<cr>
xyz\r\nabc\<crlf>
** Failers
xyz\nabc\<cr>
xyz\r\nabc\<cr>
xyz\nabc\<crlf>
xyz\rabc\<crlf>
xyz\rabc\<lf>
/abc$/Im<lf>
xyzabc
xyzabc\n
xyzabc\npqr
xyzabc\r\<cr>
xyzabc\rpqr\<cr>
xyzabc\r\n\<crlf>
xyzabc\r\npqr\<crlf>
** Failers
xyzabc\r
xyzabc\rpqr
xyzabc\r\n
xyzabc\r\npqr
/^abc/Im<cr>
xyz\rabcdef
xyz\nabcdef\<lf>
** Failers
xyz\nabcdef
/^abc/Im<lf>
xyz\nabcdef
xyz\rabcdef\<cr>
** Failers
xyz\rabcdef
/^abc/Im<crlf>
xyz\r\nabcdef
xyz\rabcdef\<cr>
** Failers
xyz\rabcdef
/^abc/Im<bad>
/abc/I
xyz\rabc\<bad>
abc
/.*/I<lf>
abc\ndef
abc\rdef
abc\r\ndef
\<cr>abc\ndef
\<cr>abc\rdef
\<cr>abc\r\ndef
\<crlf>abc\ndef
\<crlf>abc\rdef
\<crlf>abc\r\ndef
/\w+(.)(.)?def/Is
abc\ndef
abc\rdef
abc\r\ndef
+((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)+I
/* this is a C style comment */\M
/(?P<B>25[0-5]|2[0-4]\d|[01]?\d?\d)(?:\.(?P>B)){3}/I
/()()()()()()()()()()()()()()()()()()()()
()()()()()()()()()()()()()()()()()()()()
()()()()()()()()()()()()()()()()()()()()
()()()()()()()()()()()()()()()()()()()()
()()()()()()()()()()()()()()()()()()()()
(.(.))/Ix
XY\O400
/(a*b|(?i:c*(?-i)d))/IS
/()[ab]xyz/IS
/(|)[ab]xyz/IS
/(|c)[ab]xyz/IS
/(|c?)[ab]xyz/IS
/(d?|c?)[ab]xyz/IS
/(d?|c)[ab]xyz/IS
/^a*b\d/D
/^a*+b\d/D
/^a*?b\d/D
/^a+A\d/D
aaaA5
** Failers
aaaa5
/^a*A\d/IiD
aaaA5
aaaa5
/(a*|b*)[cd]/IS
/(a+|b*)[cd]/IS
/(a*|b+)[cd]/IS
/(a+|b+)[cd]/IS
/((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((
((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((
(((
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\Cabc\Cxyz
/(?<abc>x)(?'xyz'y)/I
xy\Cabc\Cxyz
/(?<abc'x)(?'xyz'y)/I
/(?<abc>x)(?'xyz>y)/I
/(?P'abc'x)(?P<xyz>y)/I
/^(?:(?(ZZ)a|b)(?<ZZ>X))+/
bXaX
bXbX
** Failers
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
** Failers
axby
/^(((?P=abc)|X)(?<abc>x|y))+/
XxXxxx
XxXyyx
XxXyxx
** Failers
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.
*** Failers
The quick brown fox
/(?=(\w+))\1:/I
abcd:
/(?=(?'abc'\w+))\k<abc>:/I
abcd:
/(?'abc'\w+):\k<abc>{2}/
a:aaxyz
ab:ababxyz
** Failers
a:axyz
ab:abxyz
/(?'abc'a|b)(?<abc>d|e)\k<abc>{2}/J
adaa
** Failers
addd
adbb
/(?'abc'a|b)(?<abc>d|e)(?&abc){2}/J
bdaa
bdab
** Failers
bddd
/^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x
abd
ce
/(?(<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&1)1) (?(R&B)2) X | (?1) (?2) (?R) ))) /x
/(?<1> (?'B' abc (?(R) (?(R&1)1) (?(R&B)2) X | (?1) (?2) (?R) ))) /x
abcabc1Xabc2XabcXabcabc
/^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) /x
abcd
/(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
(?(DEFINE)
(?<NAME_PAT>[a-z]+)
(?<ADDRESS_PAT>\d+)
)/x
metcalfe 33
/^(?(DEFINE) abc | xyz ) /x
/(?(DEFINE) abc) xyz/xI
/(?(DEFINE) abc){3} xyz/x
/(a|)*\d/
\O0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
\O0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
/^a.b/<lf>
a\rb
a\nb\<cr>
** Failers
a\nb
a\nb\<any>
a\rb\<cr>
a\rb\<any>
/^abc./mgx<any>
abc1 \x0aabc2 \x0babc3xx \x0cabc4 \x0dabc5xx \x0d\x0aabc6 \x85abc7 \x{2028}abc8 \x{2029}abc9 JUNK
/abc.$/mgx<any>
abc1\x0a abc2\x0b abc3\x0c abc4\x0d abc5\x0d\x0a abc6\x85 abc7\x{2028} abc8\x{2029} abc9
/a/<cr><any>
/a/<any><crlf>
/^a\Rb/
a\nb
a\rb
a\r\nb
a\x0bb
a\x0cb
a\x85b
** Failers
a\n\rb
/^a\R*b/
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/
a\nb
a\rb
a\r\nb
a\x0bb
a\x0cb
a\x85b
a\n\rb
a\n\r\x85\x0cb
** Failers
ab
/^a\R{1,3}b/
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
** Failers
a\n\n\n\rb
a\r
/^a[\R]b/
aRb
** Failers
a\nb
/(?&abc)X(?<abc>P)/I
abcPXP123
/(?1)X(?<abc>P)/I
abcPXP123
/(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/
1.2.3.4
131.111.10.206
10.0.0.0
** Failers
10.6
455.3.4.5
/\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/
1.2.3.4
131.111.10.206
10.0.0.0
** Failers
10.6
455.3.4.5
/(?: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
DEFabcABCXYZ
/(abc)(?:(?i)(?1))/
defabcabcxyz
DEFabcABCXYZ
/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
ababababbbabZXXXX
/^(a)\g-2/
/^(a)\g/
/^(a)\g{0}/
/^(a)\g{3/
/^(a)\g{4a}/
/^a.b/<lf>
a\rb
*** Failers
a\nb
/.+foo/
afoo
** Failers
\r\nfoo
\nfoo
/.+foo/<crlf>
afoo
\nfoo
** Failers
\r\nfoo
/.+foo/<any>
afoo
** Failers
\nfoo
\r\nfoo
/.+foo/s
afoo
\r\nfoo
\nfoo
/ End of testinput2 /