/(a)b|/ /abc/ abc defabc \Aabc *** Failers \Adefabc ABC /^abc/ abc \Aabc *** Failers defabc \Adefabc /a+bc/ /a*bc/ /a{3}bc/ /(abc|a+z)/ /^abc\$/ abc *** Failers def\nabc /ab\gdef/X /(?X)ab\gdef/X /x{5,4}/ /z{65536}/ /[abcd/ /(?X)[\B]/ /[z-a]/ /^*/ /(abc/ /(?# abc/ /(?z)abc/ /.*b/ /.*?b/ /cat|dog|elephant/ this sentence eventually mentions a cat this sentences rambles on and on for a while and then reaches elephant /cat|dog|elephant/S 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 cat this sentences rambles on and on for a while to elephant ElePhant /a|[bcd]/S /(a|[^\dZ])/S /(a|b)*[\s]/S /(ab\2)/ /{4,5}abc/ /(a)(b)(c)\2/ abcb \O0abcb \O3abcb \O6abcb \O9abcb \O12abcb /(a)bc|(a)(b)\2/ abc \O0abc \O3abc \O6abc aba \O0aba \O3aba \O6aba \O9aba \O12aba /abc\$/E abc *** Failers abc\n abc\ndef /(a)(b)(c)(d)(e)\6/ /the quick brown fox/ the quick brown fox this is a line with the quick brown fox /the quick brown fox/A the quick brown fox *** Failers this is a line with the quick brown fox /ab(?z)cd/ /^abc|def/ abcdef abcdef\B /.*((abc)\$|(def))/ defabc \Zdefabc /abc/P abc *** Failers /^abc|def/P abcdef abcdef\B /.*((abc)\$|(def))/P defabc \Zdefabc /the quick brown fox/P the quick brown fox *** Failers The Quick Brown Fox /the quick brown fox/Pi the quick brown fox The Quick Brown Fox /abc.def/P *** Failers abc\ndef /abc\$/P abc abc\n /(abc)\2/P /(abc\1)/P abc /)/ /a[]b/ /[^aeiou ]{3,}/ co-processors, and for /<.*>/ abcghinop /<.*?>/ abcghinop /<.*>/U abcghinop /(?U)<.*>/ abcghinop /<.*?>/U abcghinop /={3,}/U abc========def /(?U)={3,}?/ abc========def /(?^abc)/m 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/ the bullock-cart a donkey-cart race *** Failers cart horse-and-cart /(?<=ab(?i)x|y|z)/ /(?>.*)(?<=(abcd)|(xyz))/ alphabetabcd endingxyz /(?<=ab(?i)x(?-i)y|(?i)z|b)ZZ/ abxyZZ abXyZZ ZZZ zZZ bZZ BZZ *** Failers ZZ abXYZZ zzz bzz /(?[^()]+) # Either a sequence of non-brackets (no backtracking) | # Or (?R) # Recurse - i.e. nested bracketed string )* # Zero or more contents \) # Closing ) /x (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 /\( ( (?>[^()]+) | (?R) )* \) /xg (ab(xy)cd)pqr 1(abcd)(x(y)z)pqr /\( (?: (?>[^()]+) | (?R) ) \) /x (abcd) (ab(xy)cd) (a(b(c)d)e) ((ab)) *** Failers () /\( (?: (?>[^()]+) | (?R) )? \) /x () 12(abcde(fsh)xyz(foo(bar))lmno)89 /\( ( (?>[^()]+) | (?R) )* \) /x (ab(xy)cd) /\( ( ( (?>[^()]+) | (?R) )* ) \) /x (ab(xy)cd) /\( (123)? ( ( (?>[^()]+) | (?R) )* ) \) /x (ab(xy)cd) (123ab(xy)cd) /\( ( (123)? ( (?>[^()]+) | (?R) )* ) \) /x (ab(xy)cd) (123ab(xy)cd) /\( (((((((((( ( (?>[^()]+) | (?R) )* )))))))))) \) /x (ab(xy)cd) /\( ( ( (?>[^()<>]+) | ((?>[^()]+)) | (?R) )* ) \) /x (abcd(xyz

qrs)123) /\( ( ( (?>[^()]+) | ((?R)) )* ) \) /x (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.]]/ /[[=ch=]]/ /[[:rhubarb:]]/ /[[:upper:]]/i A a /[[:lower:]]/i A a /((?-i)[[:lower:]])[[:lower:]]/i ab aB *** Failers Ab AB /[\200-\410]/ /^(?(0)f|b)oo/ /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)/ \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/ /(main(O)?)+/ mainmain mainOmain /These are all cases where Perl does it differently (nested captures)/ /^(a(b)?)+\$/ aba /^(aa(bb)?)+\$/ aabbaa /^(aa|aa(bb))+\$/ aabbaa /^(aa(bb)??)+\$/ aabbaa /^(?:aa(bb)?)+\$/ aabbaa /^(aa(b(b))?)+\$/ aabbaa /^(?:aa(b(b))?)+\$/ aabbaa /^(?:aa(b(?:b))?)+\$/ aabbaa /^(?:aa(bb(?:b))?)+\$/ aabbbaa /^(?:aa(b(?:bb))?)+\$/ aabbbaa /^(?:aa(?:b(b))?)+\$/ aabbaa /^(?:aa(?:b(bb))?)+\$/ aabbbaa /^(aa(b(bb))?)+\$/ aabbbaa /^(aa(bb(bb))?)+\$/ aabbbbaa /--------------------------------------------------------------------/ /#/xMD /a#/xMD /[\s]/D /[\S]/D /a(?i)b/D ab aB *** Failers AB /(a(?i)b)/D ab aB *** Failers AB / (?i)abc/xD /#this is a comment (?i)abc/xD /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++)*\$/ 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)/ 12345a *** Failers 12345+ /a++b/ aaab /(a++b)/ aaab /(a++)b/ aaab /([^()]++|\([^()]*\))+/ ((abc(ade)ufh()()x /\(([^()]++|\([^()]+\))+\)/ (abc) (abc(def)xyz) *** Failers ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa /(abc){1,3}+/D /a+?+/ /a{2,3}?+b/ /(?U)a+?+/ /a{2,3}?+b/U /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.]/ /[=x=]/ /[:x:]/ /\l/ /\L/ /\N{name}/ /\u/ /\U/ /[/ /[a-/ /[[:space:]/ /[\s]/DM /[[:space:]]/DM /[[:space:]abcde]/DM /< (?: (?(R) \d++ | [^<>]*+) | (?R)) * >/x <> hij> hij> def> *** Failers iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\qmj\;2\}YWFdYx\.Ap\]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|DM |\\$\<\.X\+ix\[d1b\!H\#\?vV0vrK\:ZH1\=2M\>iV\;\?aPhFB\<\*vW\@QW\@sO9\}cfZA\-i\'w\%hKd6gt1UJP\,15_\#QY\\$M\^Mss_U\/\]\&LK9\[5vQub\^w\[KDD\qmj\;2\}YWFdYx\.Ap\]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|DM /(.*)\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 /(?(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/mI abcde xy\nabc *** Failers xyabc /c|abc/I /(?i)[ab]/IS /[ab](?i)cd/IS /abc(?C)def/ abcdef 1234abcdef *** Failers abcxyz abcxyzf /abc(?C)de(?C1)f/ 123abcdef /(?C1)\dabc(?C2)def/ 1234abcdef *** Failers abcdef /(?C255)ab/ /(?C256)ab/ /(?Cab)xx/ /(?C12vr)x/ /abc(?C)def/ *** Failers \x83\x0\x61bcdef /(abc)(?C)de(?C1)f/ 123abcdef 123abcdef\C+ 123abcdef\C- *** Failers 123abcdef\C!1 /(?C0)(abc(?C1))*/ abcabcabc abcabc\C!1!3 *** Failers abcabcabc\C!1!3 /(\d{3}(?C))*/ 123\C+ 123456\C+ 123456789\C+ /((xyz)(?C)p|(?C1)xyzabc)/ xyzabc\C+ /(X)((xyz)(?C)p|(?C1)xyzabc)/ Xxyzabc\C+ /(?=(abc))(?C)abcdef/ abcdef\C+ /(?!(abc)(?C1)d)(?C2)abcxyz/ abcxyz\C+ /(?<=(abc)(?C))xyz/ abcxyz\C+ /a(b+)(c*)(?C1)/ abbbbbccc\C*1 /a(b+?)(c*?)(?C1)/ abbbbbccc\C*1 /(?C)abc/ /(?C)^abc/ /(?C)a|b/S /(?R)/ /(a|(?R))/ /(ab|(bc|(de|(?R))))/ /x(ab|(bc|(de|(?R))))/ xab xbc xde xxab xxxab *** Failers xyab /(ab|(bc|(de|(?1))))/ /x(ab|(bc|(de|(?1)x)x)x)/ /^([^()]|\((?1)*\))*\$/ abc a(b)c a(b(c))d *** Failers) a(b(c)d /^>abc>([^()]|\((?1)*\))*abc>123abc>1(2)3abc>(1(2)3)]*+) | (?2)) * >))/x <> hij> hij> def> *** Failers b|c)d(?Pe)/D abde acde /(?:a(?Pc(?Pd)))(?Pa)/D /(?Pa)...(?P=a)bbb(?P>a)d/D /^\W*(?:(?P(?P.)\W*(?P>one)\W*(?P=two)|)|(?P(?P.)\W*(?P>three)\W*(?P=four)|\W*.\W*))\W*\$/i 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)?/ bb bbaa /(.*)a/sI /(.*)a\1/sI /(.*)a(b)\2/sI /((.*)a|(.*)b)z/sI /((.*)a|(.*)b)z\1/sI /((.*)a|(.*)b)z\2/sI /((.*)a|(.*)b)z\3/sI /((.*)a|^(.*)b)z\3/sI /(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a/sI /(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\31/sI /(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\32/sI /(a)(bc)/ND abc /(?Pa)(bc)/ND abc /(a)(?Pbc)/ND /(a+)*zz/ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\M aaaaaaaaaaaaaz\M /(aaa(?C1)bbb|ab)/ aaabbb aaabbb\C*0 aaabbb\C*1 aaabbb\C*-1 /ab(?Pcd)ef(?Pgh)/ abcdefgh abcdefgh\C1\Gtwo abcdefgh\Cone\Ctwo abcdefgh\Cthree /(?P)(?P)/D /(?P)(?P)/D /(?Pzz)(?Paa)/ zzaa\CZ zzaa\CA /(?Peks)(?Peccs)/ /(?Pabc(?Pdef)(?Pxyz))/ "\[((?P\d+)(,(?P>elem))*)\]" [10,20,30,5,5,4,4,2,43,23,4234] *** Failers [] "\[((?P\d+)(,(?P>elem))*)?\]" [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*[!.-]*)/i Baby Bjorn Active Carrier - With free SHIPPING!! /((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/iS Baby Bjorn Active Carrier - With free SHIPPING!! /a*.*b/SD /(a|b)*.?c/SD /abc(?C255)de(?C)f/D /abcde/CD abcde abcdfe /a*b/CD ab aaaab aaaacb /a+b/CD ab aaaab aaaacb /(abc|def)x/CD abcx defx abcdefzx /(ab|cd){3,4}/C ababab abcdabcd abcdcdcdcdcd /([ab]{,4}c|xy)/CD Note: that { does NOT introduce a quantifier /([ab]{1,4}c|xy){4,5}?123/CD aacaacaacaacaac123 /\b.*/I ab cd\>1 /\b.*/Is ab cd\>1 /(?!.bcd).*/I Xbcd12345 /abcde/ 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\$" 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/ 123\P a\P b\P c\P c12\P c123\P /^(?:\d){3,5}X/ 1\P 123\P 123X 1234\P 1234X 12345\P 12345X *** Failers 1X 123456\P /abc/>testsavedregex testsavedregex testsavedregex testsavedregex (.)*~smg \n\n\nPartner der LCO\nde\nPartner der LINEAS Consulting\nGmbH\nLINEAS Consulting GmbH Hamburg\nPartnerfirmen\n30 days\nindex,follow\n\nja\n3\nPartner\n\n\nLCO\nLINEAS Consulting\n15.10.2003\n\n\n\n\nDie Partnerfirmen der LINEAS Consulting\nGmbH\n\n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n /^a/IF /line\nbreak/ this is a line\nbreak line one\nthis is a line\nbreak in the second line /line\nbreak/f this is a line\nbreak ** Failers line one\nthis is a line\nbreak in the second line /line\nbreak/mf this is a line\nbreak ** Failers line one\nthis is a line\nbreak in the second line /ab.cd/P ab-cd ab=cd ** Failers ab\ncd /ab.cd/Ps ab-cd ab=cd ab\ncd /(?i)(?-i)AbCd/ AbCd ** Failers abcd /a{11111111111111111111}/ /(){64294967295}/ /(){2,4294967295}/ "(?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" abcdefghijklAkB "(?Pa)(?Pb)(?Pc)(?Pd)(?Pe)(?Pf)(?Pg)(?Ph)(?Pi)(?Pj)(?Pk)(?Pl)A\11B" abcdefghijklAkB "(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)A\11B" abcdefghijklAkB "(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)(?Pa)" 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)" aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa /[^()]*(?:\((?R)\)[^()]*)*/ (this(and)that (this(and)that) (this(and)that)stuff /[^()]*(?:\((?>(?R))\)[^()]*)*/ (this(and)that (this(and)that) /[^()]*(?:\((?R)\))*[^()]*/ (this(and)that (this(and)that) /(?:\((?R)\))*[^()]*/ (this(and)that (this(and)that) ((this)) /(?:\((?R)\))|[^()]*/ (this(and)that (this(and)that) (this) ((this)) /a(b)c/PN abc /a(?Pb)c/PN abc /\x{100}/ /\x{0000ff}/ / End of testinput2 /