ossp-pkg/pcre/pcre_test.d/testoutput2
1.7
PCRE version 3.4 22-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: <unset>
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: <unset>
\O9aba
Matched, but too many substrings
0: aba
1: <unset>
2: a
\O12aba
0: aba
1: <unset>
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: <unset>
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 = '>'
abc<def>ghi<klm>nop
0: <def>ghi<klm>
/<.*?>/
Capturing subpattern count = 0
No options
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>
/<.*>/U
Capturing subpattern count = 0
Options: ungreedy
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>
/<.*>(?U)/
Capturing subpattern count = 0
Options: ungreedy
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>
/<.*?>/U
Capturing subpattern count = 0
Options: ungreedy
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>ghi<klm>
/={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: ========
/(?<!bar|cattle)foo/
Capturing subpattern count = 0
No options
First char = 'f'
Need char = 'o'
foo
0: foo
catfoo
0: foo
*** Failers
No match
the barfoo
No match
and cattlefoo
No match
/(?<=a+)b/
Failed: lookbehind assertion is not fixed length at offset 6
/(?<=aaa|b{0,3})b/
Failed: lookbehind assertion is not fixed length at offset 14
/(?<!(foo)a\1)bar/
Failed: lookbehind assertion is not fixed length at offset 12
/(?i)abc/
Capturing subpattern count = 0
Options: caseless
First char = 'a'
Need char = 'c'
/(a|(?m)a)/
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/(?i)^1234/
Capturing subpattern count = 0
Options: anchored caseless
No first char
Need char = '4'
/(^b|(?i)^d)/
Capturing subpattern count = 1
Options: anchored
Case state changes
No first char
No need char
/(?s).*/
Capturing subpattern count = 0
Options: anchored dotall
No first char
No need char
/[abcd]/S
Capturing subpattern count = 0
No options
No first char
No need char
Starting character set: a b c d
/(?i)[abcd]/S
Capturing subpattern count = 0
Options: caseless
No first char
No need char
Starting character set: A B C D a b c d
/(?m)[xy]|(b|c)/S
Capturing subpattern count = 1
Options: multiline
No first char
No need char
Starting character set: b c x y
/(^a|^b)/m
Capturing subpattern count = 1
Options: multiline
First char at start or follows \n
No need char
/(?i)(^a|^b)/m
Capturing subpattern count = 1
Options: caseless multiline
First char at start or follows \n
No need char
/(a)(?(1)a|b|c)/
Failed: conditional group contains more than two branches at offset 13
/(?(?=a)a|b|c)/
Failed: conditional group contains more than two branches at offset 12
/(?(1a)/
Failed: malformed number after (?( at offset 4
/(?(?i))/
Failed: assertion expected after (?( at offset 3
/(?(abc))/
Failed: assertion expected after (?( at offset 3
/(?(?<ab))/
Failed: unrecognized character after (?< at offset 2
/((?s)blah)\s+\1/
Capturing subpattern count = 1
Max back reference = 1
No options
First char = 'b'
Need char = 'h'
/((?i)blah)\s+\1/
Capturing subpattern count = 1
Max back reference = 1
No options
Case state changes
No first char
Need char = 'h'
/((?i)b)/DS
------------------------------------------------------------------
0 16 Bra 0
3 8 Bra 1
6 01 Opt
8 1 b
11 8 Ket
14 00 Opt
16 16 Ket
19 End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
Case state changes
No first char
Need char = 'b'
Starting character set: B b
/(a*b|(?i:c*(?-i)d))/S
Capturing subpattern count = 1
No options
Case state changes
No first char
No need char
Starting character set: C a b c d
/a$/
Capturing subpattern count = 0
No options
First char = 'a'
No need char
a
0: a
a\n
0: a
*** Failers
No match
\Za
No match
\Za\n
No match
/a$/m
Capturing subpattern count = 0
Options: multiline
First char = 'a'
No need char
a
0: a
a\n
0: a
\Za\n
0: a
*** Failers
No match
\Za
No match
/\Aabc/m
Capturing subpattern count = 0
Options: anchored multiline
No first char
Need char = 'c'
/^abc/m
Capturing subpattern count = 0
Options: multiline
First char at start or follows \n
Need char = 'c'
/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/
Capturing subpattern count = 5
Options: anchored
No first char
Need char = 'a'
aaaaabbbbbcccccdef
0: aaaaabbbbbcccccdef
1: aaaaabbbbbcccccdef
2: aaaaa
3: b
4: bbbbccccc
5: def
/(?<=foo)[ab]/S
Capturing subpattern count = 0
No options
No first char
No need char
Starting character set: a b
/(?<!foo)(alpha|omega)/S
Capturing subpattern count = 1
No options
No first char
Need char = 'a'
Starting character set: a o
/(?!alphabet)[ab]/S
Capturing subpattern count = 0
No options
No first char
No need char
Starting character set: a b
/(?<=foo\n)^bar/m
Capturing subpattern count = 0
Options: multiline
First char at start or follows \n
Need char = 'r'
/(?>^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: <unset>
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
/(?<!(foo)a)bar/
Capturing subpattern count = 1
No options
First char = 'b'
Need char = 'r'
bar
0: bar
foobbar
0: bar
*** Failers
No match
fooabar
No match
/This one is here because Perl 5.005_02 doesn't fail it/
Capturing subpattern count = 0
No options
First char = 'T'
Need char = 't'
/^(a)?(?(1)a|b)+$/
Capturing subpattern count = 1
Options: anchored
No first char
No need char
*** Failers
No match
a
No match
/This one is here because I think Perl 5.005_02 gets the setting of $1 wrong/
Capturing subpattern count = 0
No options
First char = 'T'
Need char = 'g'
/^(a\1?){4}$/
Capturing subpattern count = 1
Max back reference = 1
Options: anchored
No first char
Need char = 'a'
aaaaaa
0: aaaaaa
1: aa
/These are syntax tests from Perl 5.005/
Capturing subpattern count = 0
No options
First char = 'T'
Need char = '5'
/a[b-a]/
Failed: range out of order in character class at offset 4
/a[]b/
Failed: missing terminating ] for character class at offset 4
/a[/
Failed: missing terminating ] for character class at offset 2
/*a/
Failed: nothing to repeat at offset 0
/(*)b/
Failed: nothing to repeat at offset 1
/abc)/
Failed: unmatched parentheses at offset 3
/(abc/
Failed: missing ) at offset 4
/a**/
Failed: nothing to repeat at offset 2
/)(/
Failed: unmatched parentheses at offset 0
/\1/
Failed: back reference to non-existent subpattern at offset 2
/\2/
Failed: back reference to non-existent subpattern at offset 2
/(a)|\2/
Failed: back reference to non-existent subpattern at offset 6
/a[b-a]/i
Failed: range out of order in character class at offset 4
/a[]b/i
Failed: missing terminating ] for character class at offset 4
/a[/i
Failed: missing terminating ] for character class at offset 2
/*a/i
Failed: nothing to repeat at offset 0
/(*)b/i
Failed: nothing to repeat at offset 1
/abc)/i
Failed: unmatched parentheses at offset 3
/(abc/i
Failed: missing ) at offset 4
/a**/i
Failed: nothing to repeat at offset 2
/)(/i
Failed: unmatched parentheses at offset 0
/:(?:/
Failed: missing ) at offset 4
/(?<%)b/
Failed: unrecognized character after (?< at offset 0
/a(?{)b/
Failed: unrecognized character after (? at offset 3
/a(?{{})b/
Failed: unrecognized character after (? at offset 3
/a(?{}})b/
Failed: unrecognized character after (? at offset 3
/a(?{"{"})b/
Failed: unrecognized character after (? at offset 3
/a(?{"{"}})b/
Failed: unrecognized character after (? at offset 3
/(?(1?)a|b)/
Failed: malformed number after (?( at offset 4
/(?(1)a|b|c)/
Failed: conditional group contains more than two branches at offset 10
/[a[:xyz:/
Failed: missing terminating ] for character class at offset 8
/(?<=x+)y/
Failed: lookbehind assertion is not fixed length at offset 6
/a{37,17}/
Failed: numbers out of order in {} quantifier at offset 7
/abc/\
Failed: \ at end of pattern at offset 4
/abc/\P
Failed: POSIX code 9: bad escape sequence at offset 4
/abc/\i
Failed: \ at end of pattern at offset 4
/(a)bc(d)/
Capturing subpattern count = 2
No options
First char = 'a'
Need char = 'd'
abcd
0: abcd
1: a
2: d
abcd\C2
0: abcd
1: a
2: d
2C d (1)
abcd\C5
0: abcd
1: a
2: d
copy substring 5 failed -7
/(.{20})/
Capturing subpattern count = 1
No options
No first char
No need char
abcdefghijklmnopqrstuvwxyz
0: abcdefghijklmnopqrst
1: abcdefghijklmnopqrst
abcdefghijklmnopqrstuvwxyz\C1
0: abcdefghijklmnopqrst
1: abcdefghijklmnopqrst
copy substring 1 failed -6
abcdefghijklmnopqrstuvwxyz\G1
0: abcdefghijklmnopqrst
1: abcdefghijklmnopqrst
1G abcdefghijklmnopqrst (20)
/(.{15})/
Capturing subpattern count = 1
No options
No first char
No need char
abcdefghijklmnopqrstuvwxyz
0: abcdefghijklmno
1: abcdefghijklmno
abcdefghijklmnopqrstuvwxyz\C1\G1
0: abcdefghijklmno
1: abcdefghijklmno
1C abcdefghijklmno (15)
1G abcdefghijklmno (15)
/(.{16})/
Capturing subpattern count = 1
No options
No first char
No need char
abcdefghijklmnopqrstuvwxyz
0: abcdefghijklmnop
1: abcdefghijklmnop
abcdefghijklmnopqrstuvwxyz\C1\G1\L
0: abcdefghijklmnop
1: abcdefghijklmnop
copy substring 1 failed -6
1G abcdefghijklmnop (16)
0L abcdefghijklmnop
1L abcdefghijklmnop
/^(a|(bc))de(f)/
Capturing subpattern count = 3
Options: anchored
No first char
Need char = 'f'
adef\G1\G2\G3\G4\L
0: adef
1: a
2: <unset>
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: <unset>
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: <unset>
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: <unset>
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<p>qrs)123)
0: (abcd(xyz<p>qrs)123)
1: abcd(xyz<p>qrs)123
2: 123
3: <p>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
/^(?(0)f|b)oo/
Failed: invalid condition (?(0) at offset 5
/ End of testinput2 /
Capturing subpattern count = 0
No options
First char = ' '
Need char = ' '
