On Sun, 9 Dec 2012, Zoltán Herczeg wrote:
> Daniel, please test the current code, and let me know if any other
> issues remain.
Alas, still getting some test failures from r1235 on 64-bit Windows with
icl:
Test 2: "API, errors, internals, and non-Perl stuff"
failed executing command-line:
"...\pcre-build-debug\pcretest.exe" -q "...\pcre-8.33-RC1"\testdata\testinput2 >testout8\testoutput2
Test 2: "Test with Study Override"
failed executing command-line:
"...\pcre-build-debug\pcretest.exe" -q -s "...\pcre-8.33-RC1"\testdata\testinput2 >testoutstudy8\testoutput2
(likewise with the 16- and 32-bit tests)
All the testout{,study}{8,16,32}/testoutput2 files are identical; I've
attached one of them.
--Daniel
--
Daniel Richard G. || danielg@??? || Software Developer
Teragram Linguistic Technologies (a division of SAS)
http://www.teragram.com//-- This set of tests is not Perl-compatible. It checks on special features
of PCRE's API, error diagnostics, and the compiled code of some patterns.
It also checks the non-Perl syntax the PCRE supports (Python, .NET,
Oniguruma). Finally, there are some tests where PCRE and Perl differ,
either because PCRE can't be compatible, or there is a possible Perl
bug.
NOTE: This is a non-UTF set of tests. When UTF support is needed, use
test 5, and if Unicode Property Support is needed, use test 7. --/
/(a)b|/I
Capturing subpattern count = 1
No options
No first char
No need char
/abc/I
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/I
Capturing subpattern count = 0
Options: anchored
No first char
No need char
abc
0: abc
\Aabc
0: abc
*** Failers
No match
defabc
No match
\Adefabc
No match
/a+bc/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
/a*bc/I
Capturing subpattern count = 0
No options
No first char
Need char = 'c'
/a{3}bc/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
/(abc|a+z)/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/^abc$/I
Capturing subpattern count = 0
Options: anchored
No first char
No need char
abc
0: abc
*** Failers
No match
def\nabc
No match
/ab\idef/X
Failed: unrecognized character follows \ at offset 3
/(?X)ab\idef/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
/(?X)[\B]/
Failed: invalid escape sequence in character class at offset 6
/(?X)[\R]/
Failed: invalid escape sequence in character class at offset 6
/(?X)[\X]/
Failed: invalid escape sequence in character class at offset 6
/[\B]/BZ
------------------------------------------------------------------
Bra
B
Ket
End
------------------------------------------------------------------
/[\R]/BZ
------------------------------------------------------------------
Bra
R
Ket
End
------------------------------------------------------------------
/[\X]/BZ
------------------------------------------------------------------
Bra
X
Ket
End
------------------------------------------------------------------
/[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 (? or (?- at offset 2
/.*b/I
Capturing subpattern count = 0
No options
First char at start or follows newline
Need char = 'b'
/.*?b/I
Capturing subpattern count = 0
No options
First char at start or follows newline
Need char = 'b'
/cat|dog|elephant/I
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/IS
Capturing subpattern count = 0
No options
No first char
No need char
Subject length lower bound = 3
Starting byte 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/IiS
Capturing subpattern count = 0
Options: caseless
No first char
No need char
Subject length lower bound = 3
Starting byte 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]/IS
Capturing subpattern count = 0
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: a b c d
/(a|[^\dZ])/IS
Capturing subpattern count = 1
No options
No first char
No need char
Subject length lower bound = 1
Starting byte 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]/IS
Capturing subpattern count = 1
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: \x09 \x0a \x0c \x0d \x20 a b
/(ab\2)/
Failed: reference to non-existent subpattern at offset 6
/{4,5}abc/
Failed: nothing to repeat at offset 4
/(a)(b)(c)\2/I
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/I
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$/IE
Capturing subpattern count = 0
Options: dollar_endonly
First char = 'a'
Need char = 'c'
abc
0: abc
*** Failers
No match
abc\n
No match
abc\ndef
No match
/(a)(b)(c)(d)(e)\6/
Failed: reference to non-existent subpattern at offset 17
/the quick brown fox/I
Capturing subpattern count = 0
No options
First char = 't'
Need char = 'x'
the quick brown fox
0: the quick brown fox
this is a line with the quick brown fox
0: the quick brown fox
/the quick brown fox/IA
Capturing subpattern count = 0
Options: anchored
No first char
No need char
the quick brown fox
0: the quick brown fox
*** Failers
No match
this is a line with the quick brown fox
No match
/ab(?z)cd/
Failed: unrecognized character after (? or (?- at offset 4
/^abc|def/I
Capturing subpattern count = 0
No options
No first char
No need char
abcdef
0: abc
abcdef\B
0: def
/.*((abc)$|(def))/I
Capturing subpattern count = 3
No options
First char at start or follows newline
No need char
defabc
0: defabc
1: abc
2: abc
\Zdefabc
0: def
1: def
2: <unset>
3: def
/)/
Failed: unmatched parentheses at offset 0
/a[]b/
Failed: missing terminating ] for character class at offset 4
/[^aeiou ]{3,}/I
Capturing subpattern count = 0
No options
No first char
No need char
co-processors, and for
0: -pr
/<.*>/I
Capturing subpattern count = 0
No options
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>ghi<klm>
/<.*?>/I
Capturing subpattern count = 0
No options
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>
/<.*>/IU
Capturing subpattern count = 0
Options: ungreedy
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>
/(?U)<.*>/I
Capturing subpattern count = 0
Options: ungreedy
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>
/<.*?>/IU
Capturing subpattern count = 0
Options: ungreedy
First char = '<'
Need char = '>'
abc<def>ghi<klm>nop
0: <def>ghi<klm>
/={3,}/IU
Capturing subpattern count = 0
Options: ungreedy
First char = '='
Need char = '='
abc========def
0: ===
/(?U)={3,}?/I
Capturing subpattern count = 0
Options: ungreedy
First char = '='
Need char = '='
abc========def
0: ========
/(?<!bar|cattle)foo/I
Capturing subpattern count = 0
No options
First char = 'f'
Need char = 'o'
Max lookbehind = 6
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/I
Capturing subpattern count = 0
Options: caseless
First char = 'a' (caseless)
Need char = 'c' (caseless)
/(a|(?m)a)/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/(?i)^1234/I
Capturing subpattern count = 0
Options: anchored caseless
No first char
No need char
/(^b|(?i)^d)/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
/(?s).*/I
Capturing subpattern count = 0
Options: anchored dotall
No first char
No need char
/[abcd]/IS
Capturing subpattern count = 0
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: a b c d
/(?i)[abcd]/IS
Capturing subpattern count = 0
Options: caseless
No first char
No need char
Subject length lower bound = 1
Starting byte set: A B C D a b c d
/(?m)[xy]|(b|c)/IS
Capturing subpattern count = 1
Options: multiline
No first char
No need char
Subject length lower bound = 1
Starting byte set: b c x y
/(^a|^b)/Im
Capturing subpattern count = 1
Options: multiline
First char at start or follows newline
No need char
/(?i)(^a|^b)/Im
Capturing subpattern count = 1
Options: caseless multiline
First char at start or follows newline
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: missing ) at offset 6
/(?(1a))/
Failed: reference to non-existent subpattern at offset 6
/(?(?i))/
Failed: assertion expected after (?( at offset 3
/(?(abc))/
Failed: reference to non-existent subpattern at offset 7
/(?(?<ab))/
Failed: syntax error in subpattern name (missing terminator) at offset 7
/((?s)blah)\s+\1/I
Capturing subpattern count = 1
Max back reference = 1
No options
First char = 'b'
Need char = 'h'
/((?i)blah)\s+\1/I
Capturing subpattern count = 1
Max back reference = 1
No options
First char = 'b' (caseless)
Need char = 'h' (caseless)
/((?i)b)/IDZS
------------------------------------------------------------------
Bra
CBra 1
/i b
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
First char = 'b' (caseless)
No need char
Subject length lower bound = 1
No set of starting bytes
/(a*b|(?i:c*(?-i)d))/IS
Capturing subpattern count = 1
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: C a b c d
/a$/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
a
0: a
a\n
0: a
*** Failers
No match
\Za
No match
\Za\n
No match
/a$/Im
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/Im
Capturing subpattern count = 0
Options: anchored multiline
No first char
No need char
/^abc/Im
Capturing subpattern count = 0
Options: multiline
First char at start or follows newline
Need char = 'c'
/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/I
Capturing subpattern count = 5
Options: anchored
No first char
No need char
aaaaabbbbbcccccdef
0: aaaaabbbbbcccccdef
1: aaaaabbbbbcccccdef
2: aaaaa
3: b
4: bbbbccccc
5: def
/(?<=foo)[ab]/IS
Capturing subpattern count = 0
No options
No first char
No need char
Max lookbehind = 3
Subject length lower bound = 1
Starting byte set: a b
/(?<!foo)(alpha|omega)/IS
Capturing subpattern count = 1
No options
No first char
Need char = 'a'
Max lookbehind = 3
Subject length lower bound = 5
Starting byte set: a o
/(?!alphabet)[ab]/IS
Capturing subpattern count = 0
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: a b
/(?<=foo\n)^bar/Im
Capturing subpattern count = 0
Contains explicit CR or LF match
Options: multiline
No first char
Need char = 'r'
Max lookbehind = 4
foo\nbarbar
0: bar
***Failers
No match
rhubarb
No match
barbell
No match
abc\nbarton
No match
/^(?<=foo\n)bar/Im
Capturing subpattern count = 0
Contains explicit CR or LF match
Options: multiline
First char at start or follows newline
Need char = 'r'
Max lookbehind = 4
foo\nbarbar
0: bar
***Failers
No match
rhubarb
No match
barbell
No match
abc\nbarton
No match
/(?>^abc)/Im
Capturing subpattern count = 0
Options: multiline
First char at start or follows newline
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/
/(?<=bullock|donkey)-cart/I
Capturing subpattern count = 0
No options
First char = '-'
Need char = 't'
Max lookbehind = 7
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)/I
Capturing subpattern count = 0
No options
No first char
No need char
Max lookbehind = 3
/(?>.*)(?<=(abcd)|(xyz))/I
Capturing subpattern count = 2
No options
No first char
No need char
Max lookbehind = 4
alphabetabcd
0: alphabetabcd
1: abcd
endingxyz
0: endingxyz
1: <unset>
2: xyz
/(?<=ab(?i)x(?-i)y|(?i)z|b)ZZ/I
Capturing subpattern count = 0
No options
First char = 'Z'
Need char = 'Z'
Max lookbehind = 4
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/I
Capturing subpattern count = 1
No options
First char = 'b'
Need char = 'r'
Max lookbehind = 4
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/I
Capturing subpattern count = 0
No options
First char = 'T'
Need char = 't'
/^(a)?(?(1)a|b)+$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
*** Failers
No match
a
No match
/This one is here because Perl behaves differently; see also the following/I
Capturing subpattern count = 0
No options
First char = 'T'
Need char = 'g'
/^(a\1?){4}$/I
Capturing subpattern count = 1
Max back reference = 1
Options: anchored
No first char
No need char
aaaa
No match
aaaaaa
No match
/Perl does not fail these two for the final subjects. Neither did PCRE until/
/release 8.01. The problem is in backtracking into a subpattern that contains/
No match
/a recursive reference to itself. PCRE has now made these into atomic patterns./
No match
/^(xa|=?\1a){2}$/
xa=xaa
0: xa=xaa
1: =xaa
** Failers
No match
xa=xaaa
No match
/^(xa|=?\1a)+$/
xa=xaa
0: xa=xaa
1: =xaa
** Failers
No match
xa=xaaa
No match
/These are syntax tests from Perl 5.005/I
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: reference to non-existent subpattern at offset 2
/\2/
Failed: reference to non-existent subpattern at offset 2
/(a)|\2/
Failed: reference to non-existent subpattern at offset 6
/a[b-a]/Ii
Failed: range out of order in character class at offset 4
/a[]b/Ii
Failed: missing terminating ] for character class at offset 4
/a[/Ii
Failed: missing terminating ] for character class at offset 2
/*a/Ii
Failed: nothing to repeat at offset 0
/(*)b/Ii
Failed: nothing to repeat at offset 1
/abc)/Ii
Failed: unmatched parentheses at offset 3
/(abc/Ii
Failed: missing ) at offset 4
/a**/Ii
Failed: nothing to repeat at offset 2
/)(/Ii
Failed: unmatched parentheses at offset 0
/:(?:/
Failed: missing ) at offset 4
/(?<%)b/
Failed: unrecognized character after (?< at offset 3
/a(?{)b/
Failed: unrecognized character after (? or (?- at offset 3
/a(?{{})b/
Failed: unrecognized character after (? or (?- at offset 3
/a(?{}})b/
Failed: unrecognized character after (? or (?- at offset 3
/a(?{"{"})b/
Failed: unrecognized character after (? or (?- at offset 3
/a(?{"{"}})b/
Failed: unrecognized character after (? or (?- at offset 3
/(?(1?)a|b)/
Failed: malformed number or name after (?( at offset 4
/[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/\i
Failed: \ at end of pattern at offset 4
/(a)bc(d)/I
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})/I
Capturing subpattern count = 1
No options
No first char
No need char
abcdefghijklmnopqrstuvwxyz
0: abcdefghijklmnopqrst
1: abcdefghijklmnopqrst
abcdefghijklmnopqrstuvwxyz\C1
0: abcdefghijklmnopqrst
1: abcdefghijklmnopqrst
1C abcdefghijklmnopqrst (20)
abcdefghijklmnopqrstuvwxyz\G1
0: abcdefghijklmnopqrst
1: abcdefghijklmnopqrst
1G abcdefghijklmnopqrst (20)
/(.{15})/I
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})/I
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
1C abcdefghijklmnop (16)
1G abcdefghijklmnop (16)
0L abcdefghijklmnop
1L abcdefghijklmnop
/^(a|(bc))de(f)/I
Capturing subpattern count = 3
Options: anchored
No first char
No need char
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/I
Capturing subpattern count = 0
Options: anchored
No first char
No need char
abc\00def\L\C0
0: abc\x00def
0C abc\x00def (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/I
Capturing subpattern count = 8
Contains explicit CR or LF match
No options
First char = 'w'
Need char = 'd'
/.*X/IDZ
------------------------------------------------------------------
Bra
Any*
X
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char at start or follows newline
Need char = 'X'
/.*X/IDZs
------------------------------------------------------------------
Bra
AllAny*
X
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored dotall
No first char
Need char = 'X'
/(.*X|^B)/IDZ
------------------------------------------------------------------
Bra
CBra 1
Any*
X
Alt
^
B
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
First char at start or follows newline
No need char
/(.*X|^B)/IDZs
------------------------------------------------------------------
Bra
CBra 1
AllAny*
X
Alt
^
B
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: anchored dotall
No first char
No need char
/(?s)(.*X|^B)/IDZ
------------------------------------------------------------------
Bra
CBra 1
AllAny*
X
Alt
^
B
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: anchored dotall
No first char
No need char
/(?s:.*X|^B)/IDZ
------------------------------------------------------------------
Bra
Bra
AllAny*
X
Alt
^
B
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/\Biss\B/I+
Capturing subpattern count = 0
No options
First char = 'i'
Need char = 's'
Max lookbehind = 1
Mississippi
0: iss
0+ issippi
/iss/IG+
Capturing subpattern count = 0
No options
First char = 'i'
Need char = 's'
Mississippi
0: iss
0+ issippi
0: iss
0+ ippi
/\Biss\B/IG+
Capturing subpattern count = 0
No options
First char = 'i'
Need char = 's'
Max lookbehind = 1
Mississippi
0: iss
0+ issippi
/\Biss\B/Ig+
Capturing subpattern count = 0
No options
First char = 'i'
Need char = 's'
Max lookbehind = 1
Mississippi
0: iss
0+ issippi
0: iss
0+ ippi
*** Failers
No match
Mississippi\A
No match
/(?<=[Ms])iss/Ig+
Capturing subpattern count = 0
No options
First char = 'i'
Need char = 's'
Max lookbehind = 1
Mississippi
0: iss
0+ issippi
0: iss
0+ ippi
/(?<=[Ms])iss/IG+
Capturing subpattern count = 0
No options
First char = 'i'
Need char = 's'
Max lookbehind = 1
Mississippi
0: iss
0+ issippi
/^iss/Ig+
Capturing subpattern count = 0
Options: anchored
No first char
No need char
ississippi
0: iss
0+ issippi
/.*iss/Ig+
Capturing subpattern count = 0
No options
First char at start or follows newline
Need char = 's'
abciss\nxyzisspqr
0: abciss
0+ \x0axyzisspqr
0: xyziss
0+ pqr
/.i./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/I+g
Capturing subpattern count = 0
Options: anchored
No first char
No need char
Mississippi
0: Mis
0+ sissippi
/^ab\n/Ig+
Capturing subpattern count = 0
Contains explicit CR or LF match
Options: anchored
No first char
No need char
ab\nab\ncd
0: ab\x0a
0+ ab\x0acd
/^ab\n/Img+
Capturing subpattern count = 0
Contains explicit CR or LF match
Options: multiline
First char at start or follows newline
Need char = \x0a
ab\nab\ncd
0: ab\x0a
0+ ab\x0acd
0: ab\x0a
0+ cd
/abc/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
/abc|bac/I
Capturing subpattern count = 0
No options
No first char
Need char = 'c'
/(abc|bac)/I
Capturing subpattern count = 1
No options
No first char
Need char = 'c'
/(abc|(c|dc))/I
Capturing subpattern count = 2
No options
No first char
Need char = 'c'
/(abc|(d|de)c)/I
Capturing subpattern count = 2
No options
No first char
Need char = 'c'
/a*/I
Capturing subpattern count = 0
No options
No first char
No need char
/a+/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/(baa|a+)/I
Capturing subpattern count = 1
No options
No first char
Need char = 'a'
/a{0,3}/I
Capturing subpattern count = 0
No options
No first char
No need char
/baa{3,}/I
Capturing subpattern count = 0
No options
First char = 'b'
Need char = 'a'
/"([^\\"]+|\\.)*"/I
Capturing subpattern count = 1
No options
First char = '"'
Need char = '"'
/(abc|ab[cd])/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/(a|.)/I
Capturing subpattern count = 1
No options
No first char
No need char
/a|ba|\w/I
Capturing subpattern count = 0
No options
No first char
No need char
/abc(?=pqr)/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'r'
/...(?<=abc)/I
Capturing subpattern count = 0
No options
No first char
No need char
Max lookbehind = 3
/abc(?!pqr)/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
/ab./I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/ab[xyz]/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/abc*/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/ab.c*/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/a.c*/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/.c*/I
Capturing subpattern count = 0
No options
No first char
No need char
/ac*/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/(a.c*|b.c*)/I
Capturing subpattern count = 1
No options
No first char
No need char
/a.c*|aba/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/.+a/I
Capturing subpattern count = 0
No options
No first char
Need char = 'a'
/(?=abcda)a.*/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'a'
/(?=a)a.*/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/a(b)*/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/a\d*/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/ab\d*/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/a(\d)*/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/abcde{0,0}/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'd'
/ab\d+/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/a(?(1)b)(.)/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/a(?(1)bag|big)(.)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'g'
/a(?(1)bag|big)*(.)/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/a(?(1)bag|big)+(.)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'g'
/a(?(1)b..|b..)(.)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b'
/ab\d{0}e/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'e'
/a?b?/I
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
/|-/I
Capturing subpattern count = 0
No options
No first char
No need char
abcd
0:
-abc
0:
\Nab-c
0: -
*** Failers
0:
\Nabc
No match
/^.?abcd/IS
Capturing subpattern count = 0
Options: anchored
No first char
Need char = 'd'
Subject length lower bound = 4
No set of starting bytes
/\( # ( at start
(?: # Non-capturing bracket
(?>[^()]+) # Either a sequence of non-brackets (no backtracking)
| # Or
(?R) # Recurse - i.e. nested bracketed string
)* # Zero or more contents
\) # Closing )
/Ix
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
/\( ( (?>[^()]+) | (?R) )* \) /Ixg
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
/\( (?: (?>[^()]+) | (?R) ) \) /Ix
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
/\( (?: (?>[^()]+) | (?R) )? \) /Ix
Capturing subpattern count = 0
Options: extended
First char = '('
Need char = ')'
()
0: ()
12(abcde(fsh)xyz(foo(bar))lmno)89
0: (fsh)
/\( ( (?>[^()]+) | (?R) )* \) /Ix
Capturing subpattern count = 1
Options: extended
First char = '('
Need char = ')'
(ab(xy)cd)
0: (ab(xy)cd)
1: cd
/\( ( ( (?>[^()]+) | (?R) )* ) \) /Ix
Capturing subpattern count = 2
Options: extended
First char = '('
Need char = ')'
(ab(xy)cd)
0: (ab(xy)cd)
1: ab(xy)cd
2: cd
/\( (123)? ( ( (?>[^()]+) | (?R) )* ) \) /Ix
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
/\( ( (123)? ( (?>[^()]+) | (?R) )* ) \) /Ix
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
/\( (((((((((( ( (?>[^()]+) | (?R) )* )))))))))) \) /Ix
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
/\( ( ( (?>[^()<>]+) | ((?>[^()]+)) | (?R) )* ) \) /Ix
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
/\( ( ( (?>[^()]+) | ((?R)) )* ) \) /Ix
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:]]/DZ
------------------------------------------------------------------
Bra
^
[0-9A-Za-z]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:^alnum:]]/DZ
------------------------------------------------------------------
Bra
^
[\x00-/:-@[-`{-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:alpha:]]/DZ
------------------------------------------------------------------
Bra
^
[A-Za-z]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:^alpha:]]/DZ
------------------------------------------------------------------
Bra
^
[\x00-@[-`{-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/[_[:alpha:]]/IS
Capturing subpattern count = 0
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: 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
_ 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
/^[[:ascii:]]/DZ
------------------------------------------------------------------
Bra
^
[\x00-\x7f]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:^ascii:]]/DZ
------------------------------------------------------------------
Bra
^
[\x80-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:blank:]]/DZ
------------------------------------------------------------------
Bra
^
[\x09 ]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:^blank:]]/DZ
------------------------------------------------------------------
Bra
^
[\x00-\x08\x0a-\x1f!-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/[\n\x0b\x0c\x0d[:blank:]]/IS
Capturing subpattern count = 0
Contains explicit CR or LF match
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: \x09 \x0a \x0b \x0c \x0d \x20
/^[[:cntrl:]]/DZ
------------------------------------------------------------------
Bra
^
[\x00-\x1f\x7f]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:digit:]]/DZ
------------------------------------------------------------------
Bra
^
[0-9]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:graph:]]/DZ
------------------------------------------------------------------
Bra
^
[!-~]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:lower:]]/DZ
------------------------------------------------------------------
Bra
^
[a-z]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:print:]]/DZ
------------------------------------------------------------------
Bra
^
[ -~]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:punct:]]/DZ
------------------------------------------------------------------
Bra
^
[!-/:-@[-`{-~]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:space:]]/DZ
------------------------------------------------------------------
Bra
^
[\x09-\x0d ]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:upper:]]/DZ
------------------------------------------------------------------
Bra
^
[A-Z]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:xdigit:]]/DZ
------------------------------------------------------------------
Bra
^
[0-9A-Fa-f]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:word:]]/DZ
------------------------------------------------------------------
Bra
^
[0-9A-Z_a-z]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:^cntrl:]]/DZ
------------------------------------------------------------------
Bra
^
[ -~\x80-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[12[:^digit:]]/DZ
------------------------------------------------------------------
Bra
^
[\x00-/12:-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/^[[:^blank:]]/DZ
------------------------------------------------------------------
Bra
^
[\x00-\x08\x0a-\x1f!-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/[01[:alpha:]%]/DZ
------------------------------------------------------------------
Bra
[%01A-Za-z]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/[[.ch.]]/I
Failed: POSIX collating elements are not supported at offset 1
/[[=ch=]]/I
Failed: POSIX collating elements are not supported at offset 1
/[[:rhubarb:]]/I
Failed: unknown POSIX class name at offset 3
/[[:upper:]]/Ii
Capturing subpattern count = 0
Options: caseless
No first char
No need char
A
0: A
a
0: a
/[[:lower:]]/Ii
Capturing subpattern count = 0
Options: caseless
No first char
No need char
A
0: A
a
0: a
/((?-i)[[:lower:]])[[:lower:]]/Ii
Capturing subpattern count = 1
Options: caseless
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-\110]/I
Failed: range out of order in character class at offset 9
/^(?(0)f|b)oo/I
Failed: invalid condition (?(0) at offset 6
/This one's here because of the large output vector needed/I
Capturing subpattern count = 0
No options
First char = 'T'
Need char = 'd'
/(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\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
Capturing subpattern count = 271
Max back reference = 270
No options
No first char
No need char
\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
0: 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
1: 1
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 10
11: 11
12: 12
13: 13
14: 14
15: 15
16: 16
17: 17
18: 18
19: 19
20: 20
21: 21
22: 22
23: 23
24: 24
25: 25
26: 26
27: 27
28: 28
29: 29
30: 30
31: 31
32: 32
33: 33
34: 34
35: 35
36: 36
37: 37
38: 38
39: 39
40: 40
41: 41
42: 42
43: 43
44: 44
45: 45
46: 46
47: 47
48: 48
49: 49
50: 50
51: 51
52: 52
53: 53
54: 54
55: 55
56: 56
57: 57
58: 58
59: 59
60: 60
61: 61
62: 62
63: 63
64: 64
65: 65
66: 66
67: 67
68: 68
69: 69
70: 70
71: 71
72: 72
73: 73
74: 74
75: 75
76: 76
77: 77
78: 78
79: 79
80: 80
81: 81
82: 82
83: 83
84: 84
85: 85
86: 86
87: 87
88: 88
89: 89
90: 90
91: 91
92: 92
93: 93
94: 94
95: 95
96: 96
97: 97
98: 98
99: 99
100: 100
101: 101
102: 102
103: 103
104: 104
105: 105
106: 106
107: 107
108: 108
109: 109
110: 110
111: 111
112: 112
113: 113
114: 114
115: 115
116: 116
117: 117
118: 118
119: 119
120: 120
121: 121
122: 122
123: 123
124: 124
125: 125
126: 126
127: 127
128: 128
129: 129
130: 130
131: 131
132: 132
133: 133
134: 134
135: 135
136: 136
137: 137
138: 138
139: 139
140: 140
141: 141
142: 142
143: 143
144: 144
145: 145
146: 146
147: 147
148: 148
149: 149
150: 150
151: 151
152: 152
153: 153
154: 154
155: 155
156: 156
157: 157
158: 158
159: 159
160: 160
161: 161
162: 162
163: 163
164: 164
165: 165
166: 166
167: 167
168: 168
169: 169
170: 170
171: 171
172: 172
173: 173
174: 174
175: 175
176: 176
177: 177
178: 178
179: 179
180: 180
181: 181
182: 182
183: 183
184: 184
185: 185
186: 186
187: 187
188: 188
189: 189
190: 190
191: 191
192: 192
193: 193
194: 194
195: 195
196: 196
197: 197
198: 198
199: 199
200: 200
201: 201
202: 202
203: 203
204: 204
205: 205
206: 206
207: 207
208: 208
209: 209
210: 210
211: 211
212: 212
213: 213
214: 214
215: 215
216: 216
217: 217
218: 218
219: 219
220: 220
221: 221
222: 222
223: 223
224: 224
225: 225
226: 226
227: 227
228: 228
229: 229
230: 230
231: 231
232: 232
233: 233
234: 234
235: 235
236: 236
237: 237
238: 238
239: 239
240: 240
241: 241
242: 242
243: 243
244: 244
245: 245
246: 246
247: 247
248: 248
249: 249
250: 250
251: 251
252: 252
253: 253
254: 254
255: 255
256: 256
257: 257
258: 258
259: 259
260: 260
261: 261
262: 262
263: 263
264: 264
265: 265
266: 266
267: 267
268: 268
269: 269
270: ABC
271: ABC
/This one's here because Perl does this differently and PCRE can't at present/I
Capturing subpattern count = 0
No options
First char = 'T'
Need char = 't'
/(main(O)?)+/I
Capturing subpattern count = 2
No options
First char = 'm'
Need char = 'n'
mainmain
0: mainmain
1: main
mainOmain
0: mainOmain
1: main
2: O
/These are all cases where Perl does it differently (nested captures)/I
Capturing subpattern count = 1
No options
First char = 'T'
Need char = 's'
/^(a(b)?)+$/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
aba
0: aba
1: a
2: b
/^(aa(bb)?)+$/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: aa
2: bb
/^(aa|aa(bb))+$/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: aa
2: bb
/^(aa(bb)??)+$/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: aa
2: bb
/^(?:aa(bb)?)+$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: bb
/^(aa(b(b))?)+$/I
Capturing subpattern count = 3
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: aa
2: bb
3: b
/^(?:aa(b(b))?)+$/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: bb
2: b
/^(?:aa(b(?:b))?)+$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: bb
/^(?:aa(bb(?:b))?)+$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
aabbbaa
0: aabbbaa
1: bbb
/^(?:aa(b(?:bb))?)+$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
aabbbaa
0: aabbbaa
1: bbb
/^(?:aa(?:b(b))?)+$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
aabbaa
0: aabbaa
1: b
/^(?:aa(?:b(bb))?)+$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
aabbbaa
0: aabbbaa
1: bb
/^(aa(b(bb))?)+$/I
Capturing subpattern count = 3
Options: anchored
No first char
No need char
aabbbaa
0: aabbbaa
1: aa
2: bbb
3: bb
/^(aa(bb(bb))?)+$/I
Capturing subpattern count = 3
Options: anchored
No first char
No need char
aabbbbaa
0: aabbbbaa
1: aa
2: bbbb
3: bb
/--------------------------------------------------------------------/I
Capturing subpattern count = 0
No options
First char = '-'
Need char = '-'
/#/IxDZ
------------------------------------------------------------------
Bra
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: extended
No first char
No need char
/a#/IxDZ
------------------------------------------------------------------
Bra
a
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: extended
First char = 'a'
No need char
/[\s]/DZ
------------------------------------------------------------------
Bra
[\x09\x0a\x0c\x0d ]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/[\S]/DZ
------------------------------------------------------------------
Bra
[\x00-\x08\x0b\x0e-\x1f!-\xff] (neg)
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/a(?i)b/DZ
------------------------------------------------------------------
Bra
a
/i b
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b' (caseless)
ab
0: ab
aB
0: aB
*** Failers
No match
AB
No match
/(a(?i)b)/DZ
------------------------------------------------------------------
Bra
CBra 1
a
/i b
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b' (caseless)
ab
0: ab
1: ab
aB
0: aB
1: aB
*** Failers
No match
AB
No match
/ (?i)abc/IxDZ
------------------------------------------------------------------
Bra
/i abc
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless extended
First char = 'a' (caseless)
Need char = 'c' (caseless)
/#this is a comment
(?i)abc/IxDZ
------------------------------------------------------------------
Bra
/i abc
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: caseless extended
First char = 'a' (caseless)
Need char = 'c' (caseless)
/123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890/DZ
------------------------------------------------------------------
Bra
123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = '1'
Need char = '0'
/\Q123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890/DZ
------------------------------------------------------------------
Bra
123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = '1'
Need char = '0'
/\Q\E/DZ
------------------------------------------------------------------
Bra
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
\
0:
/\Q\Ex/DZ
------------------------------------------------------------------
Bra
x
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'x'
No need char
/ \Q\E/DZ
------------------------------------------------------------------
Bra
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = ' '
No need char
/a\Q\E/DZ
------------------------------------------------------------------
Bra
a
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'a'
No need char
abc
0: a
bca
0: a
bac
0: a
/a\Q\Eb/DZ
------------------------------------------------------------------
Bra
ab
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
abc
0: ab
/\Q\Eabc/DZ
------------------------------------------------------------------
Bra
abc
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
/x*+\w/DZ
------------------------------------------------------------------
Bra
x*+
\w
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
*** Failers
0: F
xxxxx
No match
/x?+/DZ
------------------------------------------------------------------
Bra
x?+
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/x++/DZ
------------------------------------------------------------------
Bra
x++
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'x'
No need char
/x{1,3}+/DZ
------------------------------------------------------------------
Bra
Once
x
x{0,2}
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'x'
No need char
/(x)*+/DZ
------------------------------------------------------------------
Bra
Braposzero
CBraPos 1
x
KetRpos
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
No first char
No need char
/^(\w++|\s++)*$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
now is the time for all good men to come to the aid of the party
0: now is the time for all good men to come to the aid of the party
1: party
*** Failers
No match
this is not a line with only words and spaces!
No match
/(\d++)(\w)/I
Capturing subpattern count = 2
No options
No first char
No need char
12345a
0: 12345a
1: 12345
2: a
*** Failers
No match
12345+
No match
/a++b/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
aaab
0: aaab
/(a++b)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b'
aaab
0: aaab
1: aaab
/(a++)b/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b'
aaab
0: aaab
1: aaa
/([^()]++|\([^()]*\))+/I
Capturing subpattern count = 1
No options
No first char
No need char
((abc(ade)ufh()()x
0: abc(ade)ufh()()x
1: x
/\(([^()]++|\([^()]+\))+\)/I
Capturing subpattern count = 1
No options
First char = '('
Need char = ')'
(abc)
0: (abc)
1: abc
(abc(def)xyz)
0: (abc(def)xyz)
1: xyz
*** Failers
No match
((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
/(abc){1,3}+/DZ
------------------------------------------------------------------
Bra
Once
CBra 1
abc
Ket
Brazero
Bra
CBra 1
abc
Ket
Brazero
CBra 1
abc
Ket
Ket
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'c'
/a+?+/I
Failed: nothing to repeat at offset 3
/a{2,3}?+b/I
Failed: nothing to repeat at offset 7
/(?U)a+?+/I
Failed: nothing to repeat at offset 7
/a{2,3}?+b/IU
Failed: nothing to repeat at offset 7
/x(?U)a++b/DZ
------------------------------------------------------------------
Bra
x
a++
b
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'x'
Need char = 'b'
xaaaab
0: xaaaab
/(?U)xa++b/DZ
------------------------------------------------------------------
Bra
x
a++
b
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: ungreedy
First char = 'x'
Need char = 'b'
xaaaab
0: xaaaab
/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/DZ
------------------------------------------------------------------
Bra
^
CBra 1
CBra 2
a+
Ket
CBra 3
[ab]+?
Ket
CBra 4
[bc]+
Ket
CBra 5
\w*
Ket
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 5
Options: anchored
No first char
No need char
/^x(?U)a+b/DZ
------------------------------------------------------------------
Bra
^
x
a++
b
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: anchored
No first char
Need char = 'b'
/^x(?U)(a+)b/DZ
------------------------------------------------------------------
Bra
^
x
CBra 1
a+?
Ket
b
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options: anchored
No first char
Need char = 'b'
/[.x.]/I
Failed: POSIX collating elements are not supported at offset 0
/[=x=]/I
Failed: POSIX collating elements are not supported at offset 0
/[:x:]/I
Failed: POSIX named classes are supported only within a class at offset 0
/\l/I
Failed: PCRE does not support \L, \l, \N{name}, \U, or \u at offset 1
/\L/I
Failed: PCRE does not support \L, \l, \N{name}, \U, or \u at offset 1
/\N{name}/I
Failed: PCRE does not support \L, \l, \N{name}, \U, or \u at offset 1
/\u/I
Failed: PCRE does not support \L, \l, \N{name}, \U, or \u at offset 1
/\U/I
Failed: PCRE does not support \L, \l, \N{name}, \U, or \u at offset 1
/[/I
Failed: missing terminating ] for character class at offset 1
/[a-/I
Failed: missing terminating ] for character class at offset 3
/[[:space:]/I
Failed: missing terminating ] for character class at offset 10
/[\s]/IDZ
------------------------------------------------------------------
Bra
[\x09\x0a\x0c\x0d ]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/[[:space:]]/IDZ
------------------------------------------------------------------
Bra
[\x09-\x0d ]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/[[:space:]abcde]/IDZ
------------------------------------------------------------------
Bra
[\x09-\x0d a-e]
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/< (?: (?(R) \d++ | [^<>]*+) | (?R)) * >/Ix
Capturing subpattern count = 0
Options: extended
First char = '<'
Need char = '>'
<>
0: <>
<abcd>
0: <abcd>
<abc <123> hij>
0: <abc <123> hij>
<abc <def> hij>
0: <def>
<abc<>def>
0: <abc<>def>
<abc<>
0: <>
*** Failers
No match
<abc
No match
|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|IDZ
------------------------------------------------------------------
Bra
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
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = '8'
Need char = 'X'
Max lookbehind = 1
|\$\<\.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|IDZ
------------------------------------------------------------------
Bra
$<.X+ix[d1b!H#?vV0vrK:ZH1=2M>iV;?aPhFB<*vW@QW@sO9}cfZA-i'w%hKd6gt1UJP,15_#QY$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
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = '$'
Need char = 'X'
Max lookbehind = 1
/(.*)\d+\1/I
Capturing subpattern count = 1
Max back reference = 1
No options
No first char
No need char
/(.*)\d+/I
Capturing subpattern count = 1
No options
First char at start or follows newline
No need char
/(.*)\d+\1/Is
Capturing subpattern count = 1
Max back reference = 1
Options: dotall
No first char
No need char
/(.*)\d+/Is
Capturing subpattern count = 1
Options: anchored dotall
No first char
No need char
/(.*(xyz))\d+\2/I
Capturing subpattern count = 2
Max back reference = 2
No options
First char at start or follows newline
Need char = 'z'
/((.*))\d+\1/I
Capturing subpattern count = 2
Max back reference = 1
No options
No first char
No need char
abc123bc
0: bc123bc
1: bc
2: bc
/a[b]/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/(?=a).*/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/(?=abc).xyz/IiI
Capturing subpattern count = 0
Options: caseless
First char = 'a' (caseless)
Need char = 'z' (caseless)
/(?=abc)(?i).xyz/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'z' (caseless)
/(?=a)(?=b)/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/(?=.)a/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/((?=abcda)a)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'a'
/((?=abcda)ab)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b'
/()a/I
Capturing subpattern count = 1
No options
No first char
Need char = 'a'
/(?(1)ab|ac)(.)/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/(?(1)abz|acz)(.)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'z'
/(?(1)abz)(.)/I
Capturing subpattern count = 1
No options
No first char
No need char
/(?(1)abz)(1)23/I
Capturing subpattern count = 1
No options
No first char
Need char = '3'
/(a)+/I
Capturing subpattern count = 1
No options
First char = 'a'
No need char
/(a){2,3}/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'a'
/(a)*/I
Capturing subpattern count = 1
No options
No first char
No need char
/[a]/I
Capturing subpattern count = 0
No options
First char = 'a'
No need char
/[ab]/I
Capturing subpattern count = 0
No options
No first char
No need char
/[ab]/IS
Capturing subpattern count = 0
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: a b
/[^a]/I
Capturing subpattern count = 0
No options
No first char
No need char
/\d456/I
Capturing subpattern count = 0
No options
No first char
Need char = '6'
/\d456/IS
Capturing subpattern count = 0
No options
No first char
Need char = '6'
Subject length lower bound = 4
Starting byte set: 0 1 2 3 4 5 6 7 8 9
/a^b/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/^a/Im
Capturing subpattern count = 0
Options: multiline
First char at start or follows newline
Need char = 'a'
abcde
0: a
xy\nabc
0: a
*** Failers
No match
xyabc
No match
/c|abc/I
Capturing subpattern count = 0
No options
No first char
Need char = 'c'
/(?i)[ab]/IS
Capturing subpattern count = 0
Options: caseless
No first char
No need char
Subject length lower bound = 1
Starting byte set: A B a b
/[ab](?i)cd/IS
Capturing subpattern count = 0
No options
No first char
Need char = 'd' (caseless)
Subject length lower bound = 3
Starting byte set: a b
/abc(?C)def/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'f'
abcdef
--->abcdef
0 ^ ^ d
0: abcdef
1234abcdef
--->1234abcdef
0 ^ ^ d
0: abcdef
*** Failers
No match
abcxyz
No match
abcxyzf
--->abcxyzf
0 ^ ^ d
No match
/abc(?C)de(?C1)f/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'f'
123abcdef
--->123abcdef
0 ^ ^ d
1 ^ ^ f
0: abcdef
/(?C1)\dabc(?C2)def/IS
Capturing subpattern count = 0
No options
No first char
Need char = 'f'
Subject length lower bound = 7
Starting byte set: 0 1 2 3 4 5 6 7 8 9
1234abcdef
--->1234abcdef
1 ^ \d
1 ^ \d
1 ^ \d
1 ^ \d
2 ^ ^ d
0: 4abcdef
*** Failers
No match
abcdef
No match
/(?C1)\dabc(?C2)def/ISS
Capturing subpattern count = 0
No options
No first char
Need char = 'f'
1234abcdef
--->1234abcdef
1 ^ \d
1 ^ \d
1 ^ \d
1 ^ \d
2 ^ ^ d
0: 4abcdef
*** Failers
No match
abcdef
--->abcdef
1 ^ \d
1 ^ \d
1 ^ \d
1 ^ \d
1 ^ \d
1 ^ \d
No match
/(?C255)ab/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'b'
/(?C256)ab/I
Failed: number after (?C is > 255 at offset 6
/(?Cab)xx/I
Failed: closing ) for (?C expected at offset 3
/(?C12vr)x/I
Failed: closing ) for (?C expected at offset 5
/abc(?C)def/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'f'
*** Failers
No match
\x83\x0\x61bcdef
--->\x83\x00abcdef
0 ^ ^ d
0: abcdef
/(abc)(?C)de(?C1)f/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'f'
123abcdef
--->123abcdef
0 ^ ^ d
1 ^ ^ f
0: abcdef
1: abc
123abcdef\C+
Callout 0: last capture = 1
0: <unset>
1: abc
--->123abcdef
^ ^ d
Callout 1: last capture = 1
0: <unset>
1: abc
--->123abcdef
^ ^ f
0: abcdef
1: abc
123abcdef\C-
0: abcdef
1: abc
*** Failers
No match
123abcdef\C!1
--->123abcdef
0 ^ ^ d
1 ^ ^ f
No match
/(?C0)(abc(?C1))*/I
Capturing subpattern count = 1
No options
No first char
No need char
abcabcabc
--->abcabcabc
0 ^ (abc(?C1))*
1 ^ ^ )
1 ^ ^ )
1 ^ ^ )
0: abcabcabc
1: abc
abcabc\C!1!3
--->abcabc
0 ^ (abc(?C1))*
1 ^ ^ )
1 ^ ^ )
0: abcabc
1: abc
*** Failers
--->*** Failers
0 ^ (abc(?C1))*
0:
abcabcabc\C!1!3
--->abcabcabc
0 ^ (abc(?C1))*
1 ^ ^ )
1 ^ ^ )
1 ^ ^ )
0: abcabc
1: abc
/(\d{3}(?C))*/I
Capturing subpattern count = 1
No options
No first char
No need char
123\C+
Callout 0: last capture = -1
0: <unset>
--->123
^ ^ )
0: 123
1: 123
123456\C+
Callout 0: last capture = -1
0: <unset>
--->123456
^ ^ )
Callout 0: last capture = 1
0: <unset>
1: 123
--->123456
^ ^ )
0: 123456
1: 456
123456789\C+
Callout 0: last capture = -1
0: <unset>
--->123456789
^ ^ )
Callout 0: last capture = 1
0: <unset>
1: 123
--->123456789
^ ^ )
Callout 0: last capture = 1
0: <unset>
1: 456
--->123456789
^ ^ )
0: 123456789
1: 789
/((xyz)(?C)p|(?C1)xyzabc)/I
Capturing subpattern count = 2
No options
First char = 'x'
No need char
xyzabc\C+
Callout 0: last capture = 2
0: <unset>
1: <unset>
2: xyz
--->xyzabc
^ ^ p
Callout 1: last capture = -1
0: <unset>
--->xyzabc
^ x
0: xyzabc
1: xyzabc
/(X)((xyz)(?C)p|(?C1)xyzabc)/I
Capturing subpattern count = 3
No options
First char = 'X'
Need char = 'x'
Xxyzabc\C+
Callout 0: last capture = 3
0: <unset>
1: X
2: <unset>
3: xyz
--->Xxyzabc
^ ^ p
Callout 1: last capture = 1
0: <unset>
1: X
--->Xxyzabc
^^ x
0: Xxyzabc
1: X
2: xyzabc
/(?=(abc))(?C)abcdef/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'f'
abcdef\C+
Callout 0: last capture = 1
0: <unset>
1: abc
--->abcdef
^ a
0: abcdef
1: abc
/(?!(abc)(?C1)d)(?C2)abcxyz/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'z'
abcxyz\C+
Callout 1: last capture = 1
0: <unset>
1: abc
--->abcxyz
^ ^ d
Callout 2: last capture = -1
0: <unset>
--->abcxyz
^ a
0: abcxyz
/(?<=(abc)(?C))xyz/I
Capturing subpattern count = 1
No options
First char = 'x'
Need char = 'z'
Max lookbehind = 3
abcxyz\C+
Callout 0: last capture = 1
0: <unset>
1: abc
--->abcxyz
^ )
0: xyz
1: abc
/a(b+)(c*)(?C1)/I
Capturing subpattern count = 2
No options
First char = 'a'
Need char = 'b'
abbbbbccc\C*1
--->abbbbbccc
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
No match
/a(b+?)(c*?)(?C1)/I
Capturing subpattern count = 2
No options
First char = 'a'
Need char = 'b'
abbbbbccc\C*1
--->abbbbbccc
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
1 ^ ^
Callout data = 1
No match
/(?C)abc/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
/(?C)^abc/I
Capturing subpattern count = 0
Options: anchored
No first char
No need char
/(?C)a|b/IS
Capturing subpattern count = 0
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: a b
/(?R)/I
Failed: recursive call could loop indefinitely at offset 3
/(a|(?R))/I
Failed: recursive call could loop indefinitely at offset 6
/(ab|(bc|(de|(?R))))/I
Failed: recursive call could loop indefinitely at offset 15
/x(ab|(bc|(de|(?R))))/I
Capturing subpattern count = 3
No options
First char = 'x'
No need char
xab
0: xab
1: ab
xbc
0: xbc
1: bc
2: bc
xde
0: xde
1: de
2: de
3: de
xxab
0: xxab
1: xab
2: xab
3: xab
xxxab
0: xxxab
1: xxab
2: xxab
3: xxab
*** Failers
No match
xyab
No match
/(ab|(bc|(de|(?1))))/I
Failed: recursive call could loop indefinitely at offset 15
/x(ab|(bc|(de|(?1)x)x)x)/I
Failed: recursive call could loop indefinitely at offset 16
/^([^()]|\((?1)*\))*$/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
abc
0: abc
1: c
a(b)c
0: a(b)c
1: c
a(b(c))d
0: a(b(c))d
1: d
*** Failers)
No match
a(b(c)d
No match
/^>abc>([^()]|\((?1)*\))*<xyz<$/I
Capturing subpattern count = 1
Options: anchored
No first char
Need char = '<'
>abc>123<xyz<
0: >abc>123<xyz<
1: 3
>abc>1(2)3<xyz<
0: >abc>1(2)3<xyz<
1: 3
>abc>(1(2)3)<xyz<
0: >abc>(1(2)3)<xyz<
1: (1(2)3)
/(a(?1)b)/DZ
------------------------------------------------------------------
Bra
CBra 1
a
Recurse
b
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b'
/(a(?1)+b)/DZ
------------------------------------------------------------------
Bra
CBra 1
a
Once
Recurse
KetRmax
b
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b'
/^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
12
0: 12
1: 12
(((2+2)*-3)-7)
0: (((2+2)*-3)-7)
1: (((2+2)*-3)-7)
2: -
-12
0: -12
1: -12
*** Failers
No match
((2+2)*-3)-7)
No match
/^(x(y|(?1){2})z)/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
xyz
0: xyz
1: xyz
2: y
xxyzxyzz
0: xxyzxyzz
1: xxyzxyzz
2: xyzxyz
*** Failers
No match
xxyzz
No match
xxyzxyzxyzz
No match
/((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/Ix
Capturing subpattern count = 2
Options: extended
First char = '<'
Need char = '>'
<>
0: <>
1: <>
2: <>
<abcd>
0: <abcd>
1: <abcd>
2: <abcd>
<abc <123> hij>
0: <abc <123> hij>
1: <abc <123> hij>
2: <abc <123> hij>
<abc <def> hij>
0: <def>
1: <def>
2: <def>
<abc<>def>
0: <abc<>def>
1: <abc<>def>
2: <abc<>def>
<abc<>
0: <>
1: <>
2: <>
*** Failers
No match
<abc
No match
/(?1)/I
Failed: reference to non-existent subpattern at offset 3
/((?2)(abc)/I
Failed: missing ) at offset 10
/^(abc)def(?1)/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
abcdefabc
0: abcdefabc
1: abc
/^(a|b|c)=(?1)+/I
Capturing subpattern count = 1
Options: anchored
No first char
No need char
a=a
0: a=a
1: a
a=b
0: a=b
1: a
a=bc
0: a=bc
1: a
/^(a|b|c)=((?1))+/I
Capturing subpattern count = 2
Options: anchored
No first char
No need char
a=a
0: a=a
1: a
2: a
a=b
0: a=b
1: a
2: b
a=bc
0: a=bc
1: a
2: c
/a(?P<name1>b|c)d(?P<longername2>e)/DZ
------------------------------------------------------------------
Bra
a
CBra 1
b
Alt
c
Ket
d
CBra 2
e
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 2
Named capturing subpatterns:
longername2 2
name1 1
No options
First char = 'a'
Need char = 'e'
abde
0: abde
1: b
2: e
acde
0: acde
1: c
2: e
/(?:a(?P<c>c(?P<d>d)))(?P<a>a)/DZ
------------------------------------------------------------------
Bra
Bra
a
CBra 1
c
CBra 2
d
Ket
Ket
Ket
CBra 3
a
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 3
Named capturing subpatterns:
a 3
c 1
d 2
No options
First char = 'a'
Need char = 'a'
/(?P<a>a)...(?P=a)bbb(?P>a)d/DZ
------------------------------------------------------------------
Bra
CBra 1
a
Ket
Any
Any
Any
\1
bbb
Recurse
d
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Max back reference = 1
Named capturing subpatterns:
a 1
No options
First char = 'a'
Need char = '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
Capturing subpattern count = 4
Max back reference = 4
Named capturing subpatterns:
four 4
one 1
three 3
two 2
Options: anchored caseless
No first char
No need char
1221
0: 1221
1: 1221
2: 1
Satan, oscillate my metallic sonatas!
0: Satan, oscillate my metallic sonatas!
1: <unset>
2: <unset>
3: Satan, oscillate my metallic sonatas
4: S
A man, a plan, a canal: Panama!
0: A man, a plan, a canal: Panama!
1: <unset>
2: <unset>
3: A man, a plan, a canal: Panama
4: A
Able was I ere I saw Elba.
0: Able was I ere I saw Elba.
1: <unset>
2: <unset>
3: Able was I ere I saw Elba
4: A
*** Failers
No match
The quick brown fox
No match
/((?(R)a|b))\1(?1)?/I
Capturing subpattern count = 1
Max back reference = 1
No options
No first char
No need char
bb
0: bb
1: b
bbaa
0: bba
1: b
/(.*)a/Is
Capturing subpattern count = 1
Options: anchored dotall
No first char
Need char = 'a'
/(.*)a\1/Is
Capturing subpattern count = 1
Max back reference = 1
Options: dotall
No first char
Need char = 'a'
/(.*)a(b)\2/Is
Capturing subpattern count = 2
Max back reference = 2
Options: anchored dotall
No first char
Need char = 'b'
/((.*)a|(.*)b)z/Is
Capturing subpattern count = 3
Options: anchored dotall
No first char
Need char = 'z'
/((.*)a|(.*)b)z\1/Is
Capturing subpattern count = 3
Max back reference = 1
Options: dotall
No first char
Need char = 'z'
/((.*)a|(.*)b)z\2/Is
Capturing subpattern count = 3
Max back reference = 2
Options: dotall
No first char
Need char = 'z'
/((.*)a|(.*)b)z\3/Is
Capturing subpattern count = 3
Max back reference = 3
Options: dotall
No first char
Need char = 'z'
/((.*)a|^(.*)b)z\3/Is
Capturing subpattern count = 3
Max back reference = 3
Options: anchored dotall
No first char
Need char = 'z'
/(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a/Is
Capturing subpattern count = 31
Options: anchored dotall
No first char
No need char
/(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\31/Is
Capturing subpattern count = 31
Max back reference = 31
Options: dotall
No first char
No need char
/(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\32/Is
Capturing subpattern count = 32
Max back reference = 32
Options: dotall
No first char
No need char
/(a)(bc)/INDZ
------------------------------------------------------------------
Bra
Bra
a
Ket
Bra
bc
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options: no_auto_capture
First char = 'a'
Need char = 'c'
abc
0: abc
/(?P<one>a)(bc)/INDZ
------------------------------------------------------------------
Bra
CBra 1
a
Ket
Bra
bc
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Named capturing subpatterns:
one 1
Options: no_auto_capture
First char = 'a'
Need char = 'c'
abc
0: abc
1: a
/(a)(?P<named>bc)/INDZ
------------------------------------------------------------------
Bra
Bra
a
Ket
CBra 1
bc
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Named capturing subpatterns:
named 1
Options: no_auto_capture
First char = 'a'
Need char = 'c'
/(a+)*zz/I
Capturing subpattern count = 1
No options
No first char
Need char = 'z'
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\M
Minimum match() limit = 8
Minimum match() recursion limit = 6
0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazz
1: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaz\M
Minimum match() limit = 32768
Minimum match() recursion limit = 42
No match
/(aaa(?C1)bbb|ab)/I
Capturing subpattern count = 1
No options
First char = 'a'
Need char = 'b'
aaabbb
--->aaabbb
1 ^ ^ b
0: aaabbb
1: aaabbb
aaabbb\C*0
--->aaabbb
1 ^ ^ b
0: aaabbb
1: aaabbb
aaabbb\C*1
--->aaabbb
1 ^ ^ b
Callout data = 1
0: ab
1: ab
aaabbb\C*-1
--->aaabbb
1 ^ ^ b
Callout data = -1
No match
/ab(?P<one>cd)ef(?P<two>gh)/I
Capturing subpattern count = 2
Named capturing subpatterns:
one 1
two 2
No options
First char = 'a'
Need char = 'h'
abcdefgh
0: abcdefgh
1: cd
2: gh
abcdefgh\C1\Gtwo
0: abcdefgh
1: cd
2: gh
1C cd (2)
G gh (2) two
abcdefgh\Cone\Ctwo
0: abcdefgh
1: cd
2: gh
C cd (2) one
C gh (2) two
abcdefgh\Cthree
no parentheses with name "three"
0: abcdefgh
1: cd
2: gh
copy substring three failed -7
/(?P<Tes>)(?P<Test>)/DZ
------------------------------------------------------------------
Bra
CBra 1
Ket
CBra 2
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 2
Named capturing subpatterns:
Tes 1
Test 2
No options
No first char
No need char
/(?P<Test>)(?P<Tes>)/DZ
------------------------------------------------------------------
Bra
CBra 1
Ket
CBra 2
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 2
Named capturing subpatterns:
Tes 2
Test 1
No options
No first char
No need char
/(?P<Z>zz)(?P<A>aa)/I
Capturing subpattern count = 2
Named capturing subpatterns:
A 2
Z 1
No options
First char = 'z'
Need char = 'a'
zzaa\CZ
0: zzaa
1: zz
2: aa
C zz (2) Z
zzaa\CA
0: zzaa
1: zz
2: aa
C aa (2) A
/(?P<x>eks)(?P<x>eccs)/I
Failed: two named subpatterns have the same name at offset 15
/(?P<abc>abc(?P<def>def)(?P<abc>xyz))/I
Failed: two named subpatterns have the same name at offset 30
"\[((?P<elem>\d+)(,(?P>elem))*)\]"I
Capturing subpattern count = 3
Named capturing subpatterns:
elem 2
No options
First char = '['
Need char = ']'
[10,20,30,5,5,4,4,2,43,23,4234]
0: [10,20,30,5,5,4,4,2,43,23,4234]
1: 10,20,30,5,5,4,4,2,43,23,4234
2: 10
3: ,4234
*** Failers
No match
[]
No match
"\[((?P<elem>\d+)(,(?P>elem))*)?\]"I
Capturing subpattern count = 3
Named capturing subpatterns:
elem 2
No options
First char = '['
Need char = ']'
[10,20,30,5,5,4,4,2,43,23,4234]
0: [10,20,30,5,5,4,4,2,43,23,4234]
1: 10,20,30,5,5,4,4,2,43,23,4234
2: 10
3: ,4234
[]
0: []
/(a(b(?2)c))?/DZ
------------------------------------------------------------------
Bra
Brazero
CBra 1
a
CBra 2
b
Recurse
c
Ket
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 2
No options
No first char
No need char
/(a(b(?2)c))*/DZ
------------------------------------------------------------------
Bra
Brazero
CBra 1
a
CBra 2
b
Recurse
c
Ket
KetRmax
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 2
No options
No first char
No need char
/(a(b(?2)c)){0,2}/DZ
------------------------------------------------------------------
Bra
Brazero
Bra
CBra 1
a
CBra 2
b
Recurse
c
Ket
Ket
Brazero
CBra 1
a
CBra 2
b
Recurse
c
Ket
Ket
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 2
No options
No first char
No need char
/[ab]{1}+/DZ
------------------------------------------------------------------
Bra
Once
[ab]{1,1}
Ket
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
No need char
/((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/Ii
Capturing subpattern count = 3
Options: caseless
No first char
Need char = 'g' (caseless)
Baby Bjorn Active Carrier - With free SHIPPING!!
0: Baby Bjorn Active Carrier - With free SHIPPING!!
1: Baby Bjorn Active Carrier - With free SHIPPING!!
/((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/IiS
Capturing subpattern count = 3
Options: caseless
No first char
Need char = 'g' (caseless)
Subject length lower bound = 8
No set of starting bytes
Baby Bjorn Active Carrier - With free SHIPPING!!
0: Baby Bjorn Active Carrier - With free SHIPPING!!
1: Baby Bjorn Active Carrier - With free SHIPPING!!
/a*.*b/ISDZ
------------------------------------------------------------------
Bra
a*
Any*
b
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
No first char
Need char = 'b'
Subject length lower bound = 1
No set of starting bytes
/(a|b)*.?c/ISDZ
------------------------------------------------------------------
Bra
Brazero
CBra 1
a
Alt
b
KetRmax
Any?
c
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
No options
No first char
Need char = 'c'
Subject length lower bound = 1
No set of starting bytes
/abc(?C255)de(?C)f/DZ
------------------------------------------------------------------
Bra
abc
Callout 255 10 1
de
Callout 0 16 1
f
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'f'
/abcde/ICDZ
------------------------------------------------------------------
Bra
Callout 255 0 1
a
Callout 255 1 1
b
Callout 255 2 1
c
Callout 255 3 1
d
Callout 255 4 1
e
Callout 255 5 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options:
First char = 'a'
Need char = 'e'
abcde
--->abcde
+0 ^ a
+1 ^^ b
+2 ^ ^ c
+3 ^ ^ d
+4 ^ ^ e
+5 ^ ^
0: abcde
abcdfe
--->abcdfe
+0 ^ a
+1 ^^ b
+2 ^ ^ c
+3 ^ ^ d
+4 ^ ^ e
No match
/a*b/ICDZS
------------------------------------------------------------------
Bra
Callout 255 0 2
a*+
Callout 255 2 1
b
Callout 255 3 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options:
No first char
Need char = 'b'
Subject length lower bound = 1
Starting byte set: a b
ab
--->ab
+0 ^ a*
+2 ^^ b
+3 ^ ^
0: ab
aaaab
--->aaaab
+0 ^ a*
+2 ^ ^ b
+3 ^ ^
0: aaaab
aaaacb
--->aaaacb
+0 ^ a*
+2 ^ ^ b
+0 ^ a*
+2 ^ ^ b
+0 ^ a*
+2 ^ ^ b
+0 ^ a*
+2 ^^ b
+0 ^ a*
+2 ^ b
+3 ^^
0: b
/a*b/ICDZSS
------------------------------------------------------------------
Bra
Callout 255 0 2
a*+
Callout 255 2 1
b
Callout 255 3 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options:
No first char
Need char = 'b'
ab
--->ab
+0 ^ a*
+2 ^^ b
+3 ^ ^
0: ab
aaaab
--->aaaab
+0 ^ a*
+2 ^ ^ b
+3 ^ ^
0: aaaab
aaaacb
--->aaaacb
+0 ^ a*
+2 ^ ^ b
+0 ^ a*
+2 ^ ^ b
+0 ^ a*
+2 ^ ^ b
+0 ^ a*
+2 ^^ b
+0 ^ a*
+2 ^ b
+0 ^ a*
+2 ^ b
+3 ^^
0: b
/a+b/ICDZ
------------------------------------------------------------------
Bra
Callout 255 0 2
a++
Callout 255 2 1
b
Callout 255 3 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 0
Options:
First char = 'a'
Need char = 'b'
ab
--->ab
+0 ^ a+
+2 ^^ b
+3 ^ ^
0: ab
aaaab
--->aaaab
+0 ^ a+
+2 ^ ^ b
+3 ^ ^
0: aaaab
aaaacb
--->aaaacb
+0 ^ a+
+2 ^ ^ b
+0 ^ a+
+2 ^ ^ b
+0 ^ a+
+2 ^ ^ b
+0 ^ a+
+2 ^^ b
No match
/(abc|def)x/ICDZS
------------------------------------------------------------------
Bra
Callout 255 0 9
CBra 1
Callout 255 1 1
a
Callout 255 2 1
b
Callout 255 3 1
c
Callout 255 4 0
Alt
Callout 255 5 1
d
Callout 255 6 1
e
Callout 255 7 1
f
Callout 255 8 0
Ket
Callout 255 9 1
x
Callout 255 10 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options:
No first char
Need char = 'x'
Subject length lower bound = 4
Starting byte set: a d
abcx
--->abcx
+0 ^ (abc|def)
+1 ^ a
+2 ^^ b
+3 ^ ^ c
+4 ^ ^ |
+9 ^ ^ x
+10 ^ ^
0: abcx
1: abc
defx
--->defx
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+6 ^^ e
+7 ^ ^ f
+8 ^ ^ )
+9 ^ ^ x
+10 ^ ^
0: defx
1: def
** Failers
No match
abcdefzx
--->abcdefzx
+0 ^ (abc|def)
+1 ^ a
+2 ^^ b
+3 ^ ^ c
+4 ^ ^ |
+9 ^ ^ x
+5 ^ d
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+6 ^^ e
+7 ^ ^ f
+8 ^ ^ )
+9 ^ ^ x
No match
/(abc|def)x/ICDZSS
------------------------------------------------------------------
Bra
Callout 255 0 9
CBra 1
Callout 255 1 1
a
Callout 255 2 1
b
Callout 255 3 1
c
Callout 255 4 0
Alt
Callout 255 5 1
d
Callout 255 6 1
e
Callout 255 7 1
f
Callout 255 8 0
Ket
Callout 255 9 1
x
Callout 255 10 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options:
No first char
Need char = 'x'
abcx
--->abcx
+0 ^ (abc|def)
+1 ^ a
+2 ^^ b
+3 ^ ^ c
+4 ^ ^ |
+9 ^ ^ x
+10 ^ ^
0: abcx
1: abc
defx
--->defx
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+6 ^^ e
+7 ^ ^ f
+8 ^ ^ )
+9 ^ ^ x
+10 ^ ^
0: defx
1: def
** Failers
No match
abcdefzx
--->abcdefzx
+0 ^ (abc|def)
+1 ^ a
+2 ^^ b
+3 ^ ^ c
+4 ^ ^ |
+9 ^ ^ x
+5 ^ d
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+6 ^^ e
+7 ^ ^ f
+8 ^ ^ )
+9 ^ ^ x
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
+0 ^ (abc|def)
+1 ^ a
+5 ^ d
No match
/(ab|cd){3,4}/IC
Capturing subpattern count = 1
Options:
No first char
No need char
ababab
--->ababab
+0 ^ (ab|cd){3,4}
+1 ^ a
+2 ^^ b
+3 ^ ^ |
+1 ^ ^ a
+2 ^ ^ b
+3 ^ ^ |
+1 ^ ^ a
+2 ^ ^ b
+3 ^ ^ |
+1 ^ ^ a
+4 ^ ^ c
+12 ^ ^
0: ababab
1: ab
abcdabcd
--->abcdabcd
+0 ^ (ab|cd){3,4}
+1 ^ a
+2 ^^ b
+3 ^ ^ |
+1 ^ ^ a
+4 ^ ^ c
+5 ^ ^ d
+6 ^ ^ )
+1 ^ ^ a
+2 ^ ^ b
+3 ^ ^ |
+1 ^ ^ a
+4 ^ ^ c
+5 ^ ^ d
+6 ^ ^ )
+12 ^ ^
0: abcdabcd
1: cd
abcdcdcdcdcd
--->abcdcdcdcdcd
+0 ^ (ab|cd){3,4}
+1 ^ a
+2 ^^ b
+3 ^ ^ |
+1 ^ ^ a
+4 ^ ^ c
+5 ^ ^ d
+6 ^ ^ )
+1 ^ ^ a
+4 ^ ^ c
+5 ^ ^ d
+6 ^ ^ )
+1 ^ ^ a
+4 ^ ^ c
+5 ^ ^ d
+6 ^ ^ )
+12 ^ ^
0: abcdcdcd
1: cd
/([ab]{,4}c|xy)/ICDZS
------------------------------------------------------------------
Bra
Callout 255 0 14
CBra 1
Callout 255 1 4
[ab]
Callout 255 5 1
{
Callout 255 6 1
,
Callout 255 7 1
4
Callout 255 8 1
}
Callout 255 9 1
c
Callout 255 10 0
Alt
Callout 255 11 1
x
Callout 255 12 1
y
Callout 255 13 0
Ket
Callout 255 14 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options:
No first char
No need char
Subject length lower bound = 2
Starting byte set: a b x
Note: that { does NOT introduce a quantifier
--->Note: that { does NOT introduce a quantifier
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+5 ^^ {
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+5 ^^ {
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+5 ^^ {
+11 ^ x
No match
/([ab]{,4}c|xy)/ICDZSS
------------------------------------------------------------------
Bra
Callout 255 0 14
CBra 1
Callout 255 1 4
[ab]
Callout 255 5 1
{
Callout 255 6 1
,
Callout 255 7 1
4
Callout 255 8 1
}
Callout 255 9 1
c
Callout 255 10 0
Alt
Callout 255 11 1
x
Callout 255 12 1
y
Callout 255 13 0
Ket
Callout 255 14 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options:
No first char
No need char
Note: that { does NOT introduce a quantifier
--->Note: that { does NOT introduce a quantifier
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+5 ^^ {
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+5 ^^ {
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+5 ^^ {
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
+0 ^ ([ab]{,4}c|xy)
+1 ^ [ab]
+11 ^ x
No match
/([ab]{1,4}c|xy){4,5}?123/ICDZ
------------------------------------------------------------------
Bra
Callout 255 0 21
CBra 1
Callout 255 1 9
[ab]{1,4}
Callout 255 10 1
c
Callout 255 11 0
Alt
Callout 255 12 1
x
Callout 255 13 1
y
Callout 255 14 0
Ket
CBra 1
Callout 255 1 9
[ab]{1,4}
Callout 255 10 1
c
Callout 255 11 0
Alt
Callout 255 12 1
x
Callout 255 13 1
y
Callout 255 14 0
Ket
CBra 1
Callout 255 1 9
[ab]{1,4}
Callout 255 10 1
c
Callout 255 11 0
Alt
Callout 255 12 1
x
Callout 255 13 1
y
Callout 255 14 0
Ket
CBra 1
Callout 255 1 9
[ab]{1,4}
Callout 255 10 1
c
Callout 255 11 0
Alt
Callout 255 12 1
x
Callout 255 13 1
y
Callout 255 14 0
Ket
Braminzero
CBra 1
Callout 255 1 9
[ab]{1,4}
Callout 255 10 1
c
Callout 255 11 0
Alt
Callout 255 12 1
x
Callout 255 13 1
y
Callout 255 14 0
Ket
Callout 255 21 1
1
Callout 255 22 1
2
Callout 255 23 1
3
Callout 255 24 0
Ket
End
------------------------------------------------------------------
Capturing subpattern count = 1
Options:
No first char
Need char = '3'
aacaacaacaacaac123
--->aacaacaacaacaac123
+0 ^ ([ab]{1,4}c|xy){4,5}?
+1 ^ [ab]{1,4}
+10 ^ ^ c
+11 ^ ^ |
+1 ^ ^ [ab]{1,4}
+10 ^ ^ c
+11 ^ ^ |
+1 ^ ^ [ab]{1,4}
+10 ^ ^ c
+11 ^ ^ |
+1 ^ ^ [ab]{1,4}
+10 ^ ^ c
+11 ^ ^ |
+21 ^ ^ 1
+1 ^ ^ [ab]{1,4}
+10 ^ ^ c
+11 ^ ^ |
+21 ^ ^ 1
+22 ^ ^ 2
+23 ^ ^ 3
+24 ^ ^
0: aacaacaacaacaac123
1: aac
/\b.*/I
Capturing subpattern count = 0
No options
No first char
No need char
Max lookbehind = 1
ab cd\>1
0: cd
/\b.*/Is
Capturing subpattern count = 0
Options: dotall
No first char
No need char
Max lookbehind = 1
ab cd\>1
0: cd
/(?!.bcd).*/I
Capturing subpattern count = 0
No options
No first char
No need char
Xbcd12345
0: bcd12345
/abcde/I
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'e'
ab\P
Partial match: ab
abc\P
Partial match: abc
abcd\P
Partial match: abcd
abcde\P
0: abcde
the quick brown abc\P
Partial match: abc
** Failers\P
No match
the quick brown abxyz fox\P
No match
"^(0?[1-9]|[12][0-9]|3[01])/(0?[1-9]|1[012])/(20)?\d\d$"I
Capturing subpattern count = 3
Options: anchored
No first char
Need char = '/'
13/05/04\P
0: 13/05/04
1: 13
2: 05
13/5/2004\P
0: 13/5/2004
1: 13
2: 5
3: 20
02/05/09\P
0: 02/05/09
1: 02
2: 05
1\P
Partial match: 1
1/2\P
Partial match: 1/2
1/2/0\P
Partial match: 1/2/0
1/2/04\P
0: 1/2/04
1: 1
2: 2
0\P
Partial match: 0
02/\P
Partial match: 02/
02/0\P
Partial match: 02/0
02/1\P
Partial match: 02/1
** Failers\P
No match
\P
No match
123\P
No match
33/4/04\P
No match
3/13/04\P
No match
0/1/2003\P
No match
0/\P
No match
02/0/\P
No match
02/13\P
No match
/0{0,2}ABC/I
Capturing subpattern count = 0
No options
No first char
Need char = 'C'
/\d{3,}ABC/I
Capturing subpattern count = 0
No options
No first char
Need char = 'C'
/\d*ABC/I
Capturing subpattern count = 0
No options
No first char
Need char = 'C'
/[abc]+DE/I
Capturing subpattern count = 0
No options
No first char
Need char = 'E'
/[abc]?123/I
Capturing subpattern count = 0
No options
No first char
Need char = '3'
123\P
0: 123
a\P
Partial match: a
b\P
Partial match: b
c\P
Partial match: c
c12\P
Partial match: c12
c123\P
0: c123
/^(?:\d){3,5}X/I
Capturing subpattern count = 0
Options: anchored
No first char
Need char = 'X'
1\P
Partial match: 1
123\P
Partial match: 123
123X
0: 123X
1234\P
Partial match: 1234
1234X
0: 1234X
12345\P
Partial match: 12345
12345X
0: 12345X
*** Failers
No match
1X
No match
123456\P
No match
/abc/IS>testsavedregex
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
Subject length lower bound = 3
No set of starting bytes
Compiled pattern written to testsavedregex
Study data written to testsavedregex
<testsavedregex
Compiled pattern loaded from testsavedregex
Study data loaded from testsavedregex
abc
0: abc
** Failers
No match
bca
No match
/abc/ISS>testsavedregex
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
Compiled pattern written to testsavedregex
<testsavedregex
Compiled pattern loaded from testsavedregex
No study data
abc
0: abc
** Failers
No match
bca
No match
/abc/IFS>testsavedregex
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
Subject length lower bound = 3
No set of starting bytes
Compiled pattern written to testsavedregex
Study data written to testsavedregex
<testsavedregex
Compiled pattern (byte-inverted) loaded from testsavedregex
Study data loaded from testsavedregex
abc
0: abc
** Failers
No match
bca
No match
/abc/IFSS>testsavedregex
Capturing subpattern count = 0
No options
First char = 'a'
Need char = 'c'
Compiled pattern written to testsavedregex
<testsavedregex
Compiled pattern (byte-inverted) loaded from testsavedregex
No study data
abc
0: abc
** Failers
No match
bca
No match
/(a|b)/IS>testsavedregex
Capturing subpattern count = 1
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: a b
Compiled pattern written to testsavedregex
Study data written to testsavedregex
<testsavedregex
Compiled pattern loaded from testsavedregex
Study data loaded from testsavedregex
abc
0: a
1: a
** Failers
0: a
1: a
def
No match
/(a|b)/ISS>testsavedregex
Capturing subpattern count = 1
No options
No first char
No need char
Compiled pattern written to testsavedregex
<testsavedregex
Compiled pattern loaded from testsavedregex
No study data
abc
0: a
1: a
** Failers
0: a
1: a
def
No match
/(a|b)/ISF>testsavedregex
Capturing subpattern count = 1
No options
No first char
No need char
Subject length lower bound = 1
Starting byte set: a b
Compiled pattern written to testsavedregex
Study data written to testsavedregex
<testsavedregex
Compiled pattern (byte-inverted) loaded from testsavedregex
Study data loaded from testsavedregex
abc
0: a
1: a
** Failers
0: a
1: a
def
No match
/(a|b)/ISSF>testsavedregex
Capturing subpattern count = 1
No options
No first char
No need char
Compiled pattern written to testsavedregex
<testsavedregex
Compiled pattern (byte-inverted) loaded from testsavedregex
No study data
abc
0: a
1: a
** Failers
0: a
1: a
def
No match
~<(\w+)/?>(.)*</(\1)>~smgI
