PCRE version 3.3 01-Aug-2000 /(a)b|/ Capturing subpattern count = 1 No options No first char No need char /abc/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'c' abc 0: abc defabc 0: abc \Aabc 0: abc *** Failers No match \Adefabc No match ABC No match /^abc/ Capturing subpattern count = 0 Options: anchored No first char Need char = 'c' abc 0: abc \Aabc 0: abc *** Failers No match defabc No match \Adefabc No match /a+bc/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'c' /a*bc/ Capturing subpattern count = 0 No options No first char Need char = 'c' /a{3}bc/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'c' /(abc|a+z)/ Capturing subpattern count = 1 No options First char = 'a' No need char /^abc$/ Capturing subpattern count = 0 Options: anchored No first char Need char = 'c' abc 0: abc *** Failers No match def\nabc No match /ab\gdef/X Failed: unrecognized character follows \ at offset 3 /(?X)ab\gdef/X Failed: unrecognized character follows \ at offset 7 /x{5,4}/ Failed: numbers out of order in {} quantifier at offset 5 /z{65536}/ Failed: number too big in {} quantifier at offset 7 /[abcd/ Failed: missing terminating ] for character class at offset 5 /[\B]/ Failed: invalid escape sequence in character class at offset 2 /[z-a]/ Failed: range out of order in character class at offset 3 /^*/ Failed: nothing to repeat at offset 1 /(abc/ Failed: missing ) at offset 4 /(?# abc/ Failed: missing ) after comment at offset 7 /(?z)abc/ Failed: unrecognized character after (? at offset 2 /.*b/ Capturing subpattern count = 0 No options First char at start or follows \n Need char = 'b' /.*?b/ Capturing subpattern count = 0 No options First char at start or follows \n Need char = 'b' /cat|dog|elephant/ Capturing subpattern count = 0 No options No first char No need char this sentence eventually mentions a cat 0: cat this sentences rambles on and on for a while and then reaches elephant 0: elephant /cat|dog|elephant/S Capturing subpattern count = 0 No options No first char No need char Starting character set: c d e this sentence eventually mentions a cat 0: cat this sentences rambles on and on for a while and then reaches elephant 0: elephant /cat|dog|elephant/iS Capturing subpattern count = 0 Options: caseless No first char No need char Starting character set: C D E c d e this sentence eventually mentions a CAT cat 0: CAT this sentences rambles on and on for a while to elephant ElePhant 0: elephant /a|[bcd]/S Capturing subpattern count = 0 No options No first char No need char Starting character set: a b c d /(a|[^\dZ])/S Capturing subpattern count = 1 No options No first char No need char Starting character set: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0a \x0b \x0c \x0d \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 \x1a \x1b \x1c \x1d \x1e \x1f \x20 ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y [ \ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ \x7f \x80 \x81 \x82 \x83 \x84 \x85 \x86 \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 \x93 \x94 \x95 \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 \xa1 \xa2 \xa3 \xa4 \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 \xb1 \xb2 \xb3 \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf \xc0 \xc1 \xc2 \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce \xcf \xd0 \xd1 \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd \xde \xdf \xe0 \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec \xed \xee \xef \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb \xfc \xfd \xfe \xff /(a|b)*[\s]/S Capturing subpattern count = 1 No options No first char No need char Starting character set: \x09 \x0a \x0b \x0c \x0d \x20 a b /(ab\2)/ Failed: back reference to non-existent subpattern at offset 6 /{4,5}abc/ Failed: nothing to repeat at offset 4 /(a)(b)(c)\2/ Capturing subpattern count = 3 Max back reference = 2 No options First char = 'a' Need char = 'c' abcb 0: abcb 1: a 2: b 3: c \O0abcb Matched, but too many substrings \O3abcb Matched, but too many substrings 0: abcb \O6abcb Matched, but too many substrings 0: abcb 1: a \O9abcb Matched, but too many substrings 0: abcb 1: a 2: b \O12abcb 0: abcb 1: a 2: b 3: c /(a)bc|(a)(b)\2/ Capturing subpattern count = 3 Max back reference = 2 No options First char = 'a' No need char abc 0: abc 1: a \O0abc Matched, but too many substrings \O3abc Matched, but too many substrings 0: abc \O6abc 0: abc 1: a aba 0: aba 1: 2: a 3: b \O0aba Matched, but too many substrings \O3aba Matched, but too many substrings 0: aba \O6aba Matched, but too many substrings 0: aba 1: \O9aba Matched, but too many substrings 0: aba 1: 2: a \O12aba 0: aba 1: 2: a 3: b /abc$/E Capturing subpattern count = 0 Options: dollar_endonly First char = 'a' Need char = 'c' abc 0: abc *** Failers No match abc\n No match abc\ndef No match /(a)(b)(c)(d)(e)\6/ Failed: back reference to non-existent subpattern at offset 17 /the quick brown fox/ Capturing subpattern count = 0 No options First char = 't' Need char = 'x' the quick brown fox 0: the quick brown fox this is a line with the quick brown fox 0: the quick brown fox /the quick brown fox/A Capturing subpattern count = 0 Options: anchored No first char Need char = 'x' the quick brown fox 0: the quick brown fox *** Failers No match this is a line with the quick brown fox No match /ab(?z)cd/ Failed: unrecognized character after (? at offset 4 /^abc|def/ Capturing subpattern count = 0 No options No first char No need char abcdef 0: abc abcdef\B 0: def /.*((abc)$|(def))/ Capturing subpattern count = 3 No options First char at start or follows \n No need char defabc 0: defabc 1: abc 2: abc \Zdefabc 0: def 1: def 2: 3: def /abc/P abc 0: abc *** Failers No match: POSIX code 17: match failed /^abc|def/P abcdef 0: abc abcdef\B 0: def /.*((abc)$|(def))/P defabc 0: defabc 1: abc 2: abc \Zdefabc 0: def 1: def 3: def /the quick brown fox/P the quick brown fox 0: the quick brown fox *** Failers No match: POSIX code 17: match failed The Quick Brown Fox No match: POSIX code 17: match failed /the quick brown fox/Pi the quick brown fox 0: the quick brown fox The Quick Brown Fox 0: The Quick Brown Fox /abc.def/P *** Failers No match: POSIX code 17: match failed abc\ndef No match: POSIX code 17: match failed /abc$/P abc 0: abc abc\n 0: abc /(abc)\2/P Failed: POSIX code 15: bad back reference at offset 7 /(abc\1)/P abc No match: POSIX code 17: match failed /)/ Failed: unmatched parentheses at offset 0 /a[]b/ Failed: missing terminating ] for character class at offset 4 /[^aeiou ]{3,}/ Capturing subpattern count = 0 No options No first char No need char co-processors, and for 0: -pr /<.*>/ Capturing subpattern count = 0 No options First char = '<' Need char = '>' abcghinop 0: ghi /<.*?>/ Capturing subpattern count = 0 No options First char = '<' Need char = '>' abcghinop 0: /<.*>/U Capturing subpattern count = 0 Options: ungreedy First char = '<' Need char = '>' abcghinop 0: /<.*>(?U)/ Capturing subpattern count = 0 Options: ungreedy First char = '<' Need char = '>' abcghinop 0: /<.*?>/U Capturing subpattern count = 0 Options: ungreedy First char = '<' Need char = '>' abcghinop 0: ghi /={3,}/U Capturing subpattern count = 0 Options: ungreedy First char = '=' Need char = '=' abc========def 0: === /(?U)={3,}?/ Capturing subpattern count = 0 Options: ungreedy First char = '=' Need char = '=' abc========def 0: ======== /(?^abc)/m Capturing subpattern count = 0 Options: multiline First char at start or follows \n Need char = 'c' abc 0: abc def\nabc 0: abc *** Failers No match defabc No match /(?<=ab(c+)d)ef/ Failed: lookbehind assertion is not fixed length at offset 11 /(?<=ab(?<=c+)d)ef/ Failed: lookbehind assertion is not fixed length at offset 12 /(?<=ab(c|de)f)g/ Failed: lookbehind assertion is not fixed length at offset 13 /The next three are in testinput2 because they have variable length branches/ Capturing subpattern count = 0 No options First char = 'T' Need char = 's' /(?<=bullock|donkey)-cart/ Capturing subpattern count = 0 No options First char = '-' Need char = 't' the bullock-cart 0: -cart a donkey-cart race 0: -cart *** Failers No match cart No match horse-and-cart No match /(?<=ab(?i)x|y|z)/ Capturing subpattern count = 0 No options Case state changes No first char No need char /(?>.*)(?<=(abcd)|(xyz))/ Capturing subpattern count = 2 No options First char at start or follows \n No need char alphabetabcd 0: alphabetabcd 1: abcd endingxyz 0: endingxyz 1: 2: xyz /(?<=ab(?i)x(?-i)y|(?i)z|b)ZZ/ Capturing subpattern count = 0 No options Case state changes First char = 'Z' Need char = 'Z' abxyZZ 0: ZZ abXyZZ 0: ZZ ZZZ 0: ZZ zZZ 0: ZZ bZZ 0: ZZ BZZ 0: ZZ *** Failers No match ZZ No match abXYZZ No match zzz No match bzz No match /(? 3: f 1G a (1) 2G (0) 3G f (1) get substring 4 failed -7 0L adef 1L a 2L 3L f bcdef\G1\G2\G3\G4\L 0: bcdef 1: bc 2: bc 3: f 1G bc (2) 2G bc (2) 3G f (1) get substring 4 failed -7 0L bcdef 1L bc 2L bc 3L f adefghijk\C0 0: adef 1: a 2: 3: f 0C adef (4) /^abc\00def/ Capturing subpattern count = 0 Options: anchored No first char Need char = 'f' abc\00def\L\C0 0: abc\x00def 0C abc (7) 0L abc /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/M Memory allocation (code space): 428 Capturing subpattern count = 8 No options First char = 'w' Need char = 'd' /.*X/D ------------------------------------------------------------------ 0 8 Bra 0 3 Any* 5 1 X 8 8 Ket 11 End ------------------------------------------------------------------ Capturing subpattern count = 0 No options First char at start or follows \n Need char = 'X' /.*X/Ds ------------------------------------------------------------------ 0 8 Bra 0 3 Any* 5 1 X 8 8 Ket 11 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored dotall No first char Need char = 'X' /(.*X|^B)/D ------------------------------------------------------------------ 0 21 Bra 0 3 8 Bra 1 6 Any* 8 1 X 11 7 Alt 14 ^ 15 1 B 18 15 Ket 21 21 Ket 24 End ------------------------------------------------------------------ Capturing subpattern count = 1 No options First char at start or follows \n No need char /(.*X|^B)/Ds ------------------------------------------------------------------ 0 21 Bra 0 3 8 Bra 1 6 Any* 8 1 X 11 7 Alt 14 ^ 15 1 B 18 15 Ket 21 21 Ket 24 End ------------------------------------------------------------------ Capturing subpattern count = 1 Options: anchored dotall No first char No need char /(?s)(.*X|^B)/D ------------------------------------------------------------------ 0 21 Bra 0 3 8 Bra 1 6 Any* 8 1 X 11 7 Alt 14 ^ 15 1 B 18 15 Ket 21 21 Ket 24 End ------------------------------------------------------------------ Capturing subpattern count = 1 Options: anchored dotall No first char No need char /(?s:.*X|^B)/D ------------------------------------------------------------------ 0 27 Bra 0 3 10 Bra 0 6 04 Opt 8 Any* 10 1 X 13 9 Alt 16 04 Opt 18 ^ 19 1 B 22 19 Ket 25 00 Opt 27 27 Ket 30 End ------------------------------------------------------------------ Capturing subpattern count = 0 No options First char at start or follows \n No need char /\Biss\B/+ Capturing subpattern count = 0 No options First char = 'i' Need char = 's' Mississippi 0: iss 0+ issippi /\Biss\B/+P Mississippi 0: iss 0+ issippi /iss/G+ Capturing subpattern count = 0 No options First char = 'i' Need char = 's' Mississippi 0: iss 0+ issippi 0: iss 0+ ippi /\Biss\B/G+ Capturing subpattern count = 0 No options First char = 'i' Need char = 's' Mississippi 0: iss 0+ issippi /\Biss\B/g+ Capturing subpattern count = 0 No options First char = 'i' Need char = 's' Mississippi 0: iss 0+ issippi 0: iss 0+ ippi *** Failers No match Mississippi\A No match /(?<=[Ms])iss/g+ Capturing subpattern count = 0 No options First char = 'i' Need char = 's' Mississippi 0: iss 0+ issippi 0: iss 0+ ippi /(?<=[Ms])iss/G+ Capturing subpattern count = 0 No options First char = 'i' Need char = 's' Mississippi 0: iss 0+ issippi /^iss/g+ Capturing subpattern count = 0 Options: anchored No first char Need char = 's' ississippi 0: iss 0+ issippi /.*iss/g+ Capturing subpattern count = 0 No options First char at start or follows \n Need char = 's' abciss\nxyzisspqr 0: abciss 0+ \x0axyzisspqr 0: xyziss 0+ pqr /.i./+g Capturing subpattern count = 0 No options No first char Need char = 'i' Mississippi 0: Mis 0+ sissippi 0: sis 0+ sippi 0: sip 0+ pi Mississippi\A 0: Mis 0+ sissippi 0: sis 0+ sippi 0: sip 0+ pi Missouri river 0: Mis 0+ souri river 0: ri 0+ river 0: riv 0+ er Missouri river\A 0: Mis 0+ souri river /^.is/+g Capturing subpattern count = 0 Options: anchored No first char Need char = 's' Mississippi 0: Mis 0+ sissippi /^ab\n/g+ Capturing subpattern count = 0 Options: anchored No first char Need char = 10 ab\nab\ncd 0: ab\x0a 0+ ab\x0acd /^ab\n/mg+ Capturing subpattern count = 0 Options: multiline First char at start or follows \n Need char = 10 ab\nab\ncd 0: ab\x0a 0+ ab\x0acd 0: ab\x0a 0+ cd /abc/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'c' /abc|bac/ Capturing subpattern count = 0 No options No first char Need char = 'c' /(abc|bac)/ Capturing subpattern count = 1 No options No first char Need char = 'c' /(abc|(c|dc))/ Capturing subpattern count = 2 No options No first char Need char = 'c' /(abc|(d|de)c)/ Capturing subpattern count = 2 No options No first char Need char = 'c' /a*/ Capturing subpattern count = 0 No options No first char No need char /a+/ Capturing subpattern count = 0 No options First char = 'a' No need char /(baa|a+)/ Capturing subpattern count = 1 No options No first char Need char = 'a' /a{0,3}/ Capturing subpattern count = 0 No options No first char No need char /baa{3,}/ Capturing subpattern count = 0 No options First char = 'b' Need char = 'a' /"([^\\"]+|\\.)*"/ Capturing subpattern count = 1 No options First char = '"' Need char = '"' /(abc|ab[cd])/ Capturing subpattern count = 1 No options First char = 'a' No need char /(a|.)/ Capturing subpattern count = 1 No options No first char No need char /a|ba|\w/ Capturing subpattern count = 0 No options No first char No need char /abc(?=pqr)/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'r' /...(?<=abc)/ Capturing subpattern count = 0 No options No first char No need char /abc(?!pqr)/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'c' /ab./ Capturing subpattern count = 0 No options First char = 'a' Need char = 'b' /ab[xyz]/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'b' /abc*/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'b' /ab.c*/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'b' /a.c*/ Capturing subpattern count = 0 No options First char = 'a' No need char /.c*/ Capturing subpattern count = 0 No options No first char No need char /ac*/ Capturing subpattern count = 0 No options First char = 'a' No need char /(a.c*|b.c*)/ Capturing subpattern count = 1 No options No first char No need char /a.c*|aba/ Capturing subpattern count = 0 No options First char = 'a' No need char /.+a/ Capturing subpattern count = 0 No options No first char Need char = 'a' /(?=abcda)a.*/ Capturing subpattern count = 0 No options First char = 'a' No need char /(?=a)a.*/ Capturing subpattern count = 0 No options First char = 'a' No need char /a(b)*/ Capturing subpattern count = 1 No options First char = 'a' No need char /a\d*/ Capturing subpattern count = 0 No options First char = 'a' No need char /ab\d*/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'b' /a(\d)*/ Capturing subpattern count = 1 No options First char = 'a' No need char /abcde{0,0}/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'd' /ab\d+/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'b' /a(?(1)b)/ Capturing subpattern count = 0 No options First char = 'a' No need char /a(?(1)bag|big)/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'g' /a(?(1)bag|big)*/ Capturing subpattern count = 0 No options First char = 'a' No need char /a(?(1)bag|big)+/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'g' /a(?(1)b..|b..)/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'b' /ab\d{0}e/ Capturing subpattern count = 0 No options First char = 'a' Need char = 'e' /a?b?/ Capturing subpattern count = 0 No options No first char No need char a 0: a b 0: b ab 0: ab \ 0: *** Failers 0: \N No match /|-/ Capturing subpattern count = 0 No options No first char No need char abcd 0: -abc 0: \Nab-c 0: - *** Failers 0: \Nabc No match /a*(b+)(z)(z)/P aaaabbbbzzzz 0: aaaabbbbzz 1: bbbb 2: z 3: z aaaabbbbzzzz\O0 aaaabbbbzzzz\O1 0: aaaabbbbzz aaaabbbbzzzz\O2 0: aaaabbbbzz 1: bbbb aaaabbbbzzzz\O3 0: aaaabbbbzz 1: bbbb 2: z aaaabbbbzzzz\O4 0: aaaabbbbzz 1: bbbb 2: z 3: z aaaabbbbzzzz\O5 0: aaaabbbbzz 1: bbbb 2: z 3: z /^.?abcd/S Capturing subpattern count = 0 Options: anchored No first char Need char = 'd' Study returned NULL /\( # ( at start (?: # Non-capturing bracket (?>[^()]+) # Either a sequence of non-brackets (no backtracking) | # Or (?R) # Recurse - i.e. nested bracketed string )* # Zero or more contents \) # Closing ) /x Capturing subpattern count = 0 Options: extended First char = '(' Need char = ')' (abcd) 0: (abcd) (abcd)xyz 0: (abcd) xyz(abcd) 0: (abcd) (ab(xy)cd)pqr 0: (ab(xy)cd) (ab(xycd)pqr 0: (xycd) () abc () 0: () 12(abcde(fsh)xyz(foo(bar))lmno)89 0: (abcde(fsh)xyz(foo(bar))lmno) *** Failers No match abcd No match abcd) No match (abcd No match /\( ( (?>[^()]+) | (?R) )* \) /xg Capturing subpattern count = 1 Options: extended First char = '(' Need char = ')' (ab(xy)cd)pqr 0: (ab(xy)cd) 1: cd 1(abcd)(x(y)z)pqr 0: (abcd) 1: abcd 0: (x(y)z) 1: z /\( (?: (?>[^()]+) | (?R) ) \) /x Capturing subpattern count = 0 Options: extended First char = '(' Need char = ')' (abcd) 0: (abcd) (ab(xy)cd) 0: (xy) (a(b(c)d)e) 0: (c) ((ab)) 0: ((ab)) *** Failers No match () No match /\( (?: (?>[^()]+) | (?R) )? \) /x Capturing subpattern count = 0 Options: extended First char = '(' Need char = ')' () 0: () 12(abcde(fsh)xyz(foo(bar))lmno)89 0: (fsh) /\( ( (?>[^()]+) | (?R) )* \) /x Capturing subpattern count = 1 Options: extended First char = '(' Need char = ')' (ab(xy)cd) 0: (ab(xy)cd) 1: cd /\( ( ( (?>[^()]+) | (?R) )* ) \) /x Capturing subpattern count = 2 Options: extended First char = '(' Need char = ')' (ab(xy)cd) 0: (ab(xy)cd) 1: ab(xy)cd 2: cd /\( (123)? ( ( (?>[^()]+) | (?R) )* ) \) /x Capturing subpattern count = 3 Options: extended First char = '(' Need char = ')' (ab(xy)cd) 0: (ab(xy)cd) 1: 2: ab(xy)cd 3: cd (123ab(xy)cd) 0: (123ab(xy)cd) 1: 123 2: ab(xy)cd 3: cd /\( ( (123)? ( (?>[^()]+) | (?R) )* ) \) /x Capturing subpattern count = 3 Options: extended First char = '(' Need char = ')' (ab(xy)cd) 0: (ab(xy)cd) 1: ab(xy)cd 2: 3: cd (123ab(xy)cd) 0: (123ab(xy)cd) 1: 123ab(xy)cd 2: 123 3: cd /\( (((((((((( ( (?>[^()]+) | (?R) )* )))))))))) \) /x Capturing subpattern count = 11 Options: extended First char = '(' Need char = ')' (ab(xy)cd) 0: (ab(xy)cd) 1: ab(xy)cd 2: ab(xy)cd 3: ab(xy)cd 4: ab(xy)cd 5: ab(xy)cd 6: ab(xy)cd 7: ab(xy)cd 8: ab(xy)cd 9: ab(xy)cd 10: ab(xy)cd 11: cd /\( ( ( (?>[^()<>]+) | ((?>[^()]+)) | (?R) )* ) \) /x Capturing subpattern count = 3 Options: extended First char = '(' Need char = ')' (abcd(xyz

qrs)123) 0: (abcd(xyz

qrs)123) 1: abcd(xyz

qrs)123 2: 123 3:

qrs /\( ( ( (?>[^()]+) | ((?R)) )* ) \) /x Capturing subpattern count = 3 Options: extended First char = '(' Need char = ')' (ab(cd)ef) 0: (ab(cd)ef) 1: ab(cd)ef 2: ef 3: (cd) (ab(cd(ef)gh)ij) 0: (ab(cd(ef)gh)ij) 1: ab(cd(ef)gh)ij 2: ij 3: (cd(ef)gh) /^[[:alnum:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [0-9A-Za-z] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:alpha:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [A-Za-z] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:ascii:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [\x00-\x7f] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:cntrl:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [\x00-\x1f\x7f] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:digit:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [0-9] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:graph:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [!-~] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:lower:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [a-z] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:print:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [ -~] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:punct:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [!-/:-@[-`{-~] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:space:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [\x09-\x0d ] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:upper:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [A-Z] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:xdigit:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [0-9A-Fa-f] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:word:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [0-9A-Z_a-z] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[[:^cntrl:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [ -~\x80-\xff] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /^[12[:^digit:]]/D ------------------------------------------------------------------ 0 37 Bra 0 3 ^ 4 [\x00-/1-2:-\xff] 37 37 Ket 40 End ------------------------------------------------------------------ Capturing subpattern count = 0 Options: anchored No first char No need char /[01[:alpha:]%]/D ------------------------------------------------------------------ 0 36 Bra 0 3 [%0-1A-Za-z] 36 36 Ket 39 End ------------------------------------------------------------------ Capturing subpattern count = 0 No options No first char No need char /[[.ch.]]/ Failed: POSIX collating elements are not supported at offset 1 /[[=ch=]]/ Failed: POSIX collating elements are not supported at offset 1 /[[:rhubarb:]]/ Failed: unknown POSIX class name at offset 3 /[[:upper:]]/i Capturing subpattern count = 0 Options: caseless No first char No need char A 0: A a 0: a /[[:lower:]]/i Capturing subpattern count = 0 Options: caseless No first char No need char A 0: A a 0: a /((?-i)[[:lower:]])[[:lower:]]/i Capturing subpattern count = 1 Options: caseless Case state changes No first char No need char ab 0: ab 1: a aB 0: aB 1: a *** Failers 0: ai 1: a Ab No match AB No match /[\200-\410]/ Failed: range out of order in character class at offset 9 / End of testinput2 / Capturing subpattern count = 0 No options First char = ' ' Need char = ' '