upload http

JIRA: BOTTLENECK-10

Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>

1 files changed, 2380 insertions, 0 deletions

diff --git a/rubbos/app/httpd-2.0.64/srclib/pcre/testdata/testoutput2 b/rubbos/app/httpd-2.0.64/srclib/pcre/testdata/testoutput2
new file mode 100644
index 00000000..e8844d2a
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/srclib/pcre/testdata/testoutput2
@@ -0,0 +1,2380 @@
+PCRE version 3.9 02-Jan-2002
+
+/(a)b|/
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+
+/abc/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'c'
+    abc
+ 0: abc
+    defabc
+ 0: abc
+    \Aabc
+ 0: abc
+    *** Failers
+No match
+    \Adefabc
+No match
+    ABC
+No match
+
+/^abc/
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 'c'
+    abc
+ 0: abc
+    \Aabc
+ 0: abc
+    *** Failers
+No match
+    defabc
+No match
+    \Adefabc
+No match
+
+/a+bc/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'c'
+
+/a*bc/
+Capturing subpattern count = 0
+No options
+No first char
+Need char = 'c'
+
+/a{3}bc/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'c'
+
+/(abc|a+z)/
+Capturing subpattern count = 1
+No options
+First char = 'a'
+No need char
+
+/^abc$/
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 'c'
+    abc
+ 0: abc
+    *** Failers
+No match
+    def\nabc
+No match
+
+/ab\gdef/X
+Failed: unrecognized character follows \ at offset 3
+
+/(?X)ab\gdef/X
+Failed: unrecognized character follows \ at offset 7
+
+/x{5,4}/
+Failed: numbers out of order in {} quantifier at offset 5
+
+/z{65536}/
+Failed: number too big in {} quantifier at offset 7
+
+/[abcd/
+Failed: missing terminating ] for character class at offset 5
+
+/[\B]/
+Failed: invalid escape sequence in character class at offset 2
+
+/[z-a]/
+Failed: range out of order in character class at offset 3
+
+/^*/
+Failed: nothing to repeat at offset 1
+
+/(abc/
+Failed: missing ) at offset 4
+
+/(?# abc/
+Failed: missing ) after comment at offset 7
+
+/(?z)abc/
+Failed: unrecognized character after (? at offset 2
+
+/.*b/
+Capturing subpattern count = 0
+No options
+First char at start or follows \n
+Need char = 'b'
+
+/.*?b/
+Capturing subpattern count = 0
+No options
+First char at start or follows \n
+Need char = 'b'
+
+/cat|dog|elephant/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+    this sentence eventually mentions a cat
+ 0: cat
+    this sentences rambles on and on for a while and then reaches elephant
+ 0: elephant
+
+/cat|dog|elephant/S
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+Starting character set: c d e 
+    this sentence eventually mentions a cat
+ 0: cat
+    this sentences rambles on and on for a while and then reaches elephant
+ 0: elephant
+
+/cat|dog|elephant/iS
+Capturing subpattern count = 0
+Options: caseless
+No first char
+No need char
+Starting character set: C D E c d e 
+    this sentence eventually mentions a CAT cat
+ 0: CAT
+    this sentences rambles on and on for a while to elephant ElePhant
+ 0: elephant
+
+/a|[bcd]/S
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+Starting character set: a b c d 
+
+/(a|[^\dZ])/S
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+Starting character set: \x00 \x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0a 
+  \x0b \x0c \x0d \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 
+  \x1a \x1b \x1c \x1d \x1e \x1f \x20 ! " # $ % & ' ( ) * + , - . / : ; < = > 
+  ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y [ \ ] ^ _ ` a b c d 
+  e f g h i j k l m n o p q r s t u v w x y z { | } ~ \x7f \x80 \x81 \x82 \x83 
+  \x84 \x85 \x86 \x87 \x88 \x89 \x8a \x8b \x8c \x8d \x8e \x8f \x90 \x91 \x92 
+  \x93 \x94 \x95 \x96 \x97 \x98 \x99 \x9a \x9b \x9c \x9d \x9e \x9f \xa0 \xa1 
+  \xa2 \xa3 \xa4 \xa5 \xa6 \xa7 \xa8 \xa9 \xaa \xab \xac \xad \xae \xaf \xb0 
+  \xb1 \xb2 \xb3 \xb4 \xb5 \xb6 \xb7 \xb8 \xb9 \xba \xbb \xbc \xbd \xbe \xbf 
+  \xc0 \xc1 \xc2 \xc3 \xc4 \xc5 \xc6 \xc7 \xc8 \xc9 \xca \xcb \xcc \xcd \xce 
+  \xcf \xd0 \xd1 \xd2 \xd3 \xd4 \xd5 \xd6 \xd7 \xd8 \xd9 \xda \xdb \xdc \xdd 
+  \xde \xdf \xe0 \xe1 \xe2 \xe3 \xe4 \xe5 \xe6 \xe7 \xe8 \xe9 \xea \xeb \xec 
+  \xed \xee \xef \xf0 \xf1 \xf2 \xf3 \xf4 \xf5 \xf6 \xf7 \xf8 \xf9 \xfa \xfb 
+  \xfc \xfd \xfe \xff 
+
+/(a|b)*[\s]/S
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+Starting character set: \x09 \x0a \x0b \x0c \x0d \x20 a b 
+
+/(ab\2)/
+Failed: back reference to non-existent subpattern at offset 6
+
+/{4,5}abc/
+Failed: nothing to repeat at offset 4
+
+/(a)(b)(c)\2/
+Capturing subpattern count = 3
+Max back reference = 2
+No options
+First char = 'a'
+Need char = 'c'
+    abcb
+ 0: abcb
+ 1: a
+ 2: b
+ 3: c
+    \O0abcb
+Matched, but too many substrings
+    \O3abcb
+Matched, but too many substrings
+ 0: abcb
+    \O6abcb
+Matched, but too many substrings
+ 0: abcb
+ 1: a
+    \O9abcb
+Matched, but too many substrings
+ 0: abcb
+ 1: a
+ 2: b
+    \O12abcb 
+ 0: abcb
+ 1: a
+ 2: b
+ 3: c
+
+/(a)bc|(a)(b)\2/
+Capturing subpattern count = 3
+Max back reference = 2
+No options
+First char = 'a'
+No need char
+    abc
+ 0: abc
+ 1: a
+    \O0abc
+Matched, but too many substrings
+    \O3abc
+Matched, but too many substrings
+ 0: abc
+    \O6abc
+ 0: abc
+ 1: a
+    aba
+ 0: aba
+ 1: <unset>
+ 2: a
+ 3: b
+    \O0aba
+Matched, but too many substrings
+    \O3aba
+Matched, but too many substrings
+ 0: aba
+    \O6aba
+Matched, but too many substrings
+ 0: aba
+ 1: <unset>
+    \O9aba
+Matched, but too many substrings
+ 0: aba
+ 1: <unset>
+ 2: a
+    \O12aba
+ 0: aba
+ 1: <unset>
+ 2: a
+ 3: b
+
+/abc$/E
+Capturing subpattern count = 0
+Options: dollar_endonly
+First char = 'a'
+Need char = 'c'
+    abc
+ 0: abc
+    *** Failers
+No match
+    abc\n
+No match
+    abc\ndef
+No match
+
+/(a)(b)(c)(d)(e)\6/
+Failed: back reference to non-existent subpattern at offset 17
+
+/the quick brown fox/
+Capturing subpattern count = 0
+No options
+First char = 't'
+Need char = 'x'
+    the quick brown fox
+ 0: the quick brown fox
+    this is a line with the quick brown fox
+ 0: the quick brown fox
+
+/the quick brown fox/A
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 'x'
+    the quick brown fox
+ 0: the quick brown fox
+    *** Failers
+No match
+    this is a line with the quick brown fox
+No match
+
+/ab(?z)cd/
+Failed: unrecognized character after (? at offset 4
+
+/^abc|def/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+    abcdef
+ 0: abc
+    abcdef\B
+ 0: def
+
+/.*((abc)$|(def))/
+Capturing subpattern count = 3
+No options
+First char at start or follows \n
+No need char
+    defabc
+ 0: defabc
+ 1: abc
+ 2: abc
+    \Zdefabc
+ 0: def
+ 1: def
+ 2: <unset>
+ 3: def
+
+/abc/P
+    abc
+ 0: abc
+    *** Failers
+No match: POSIX code 17: match failed
+    
+/^abc|def/P
+    abcdef
+ 0: abc
+    abcdef\B
+ 0: def
+
+/.*((abc)$|(def))/P
+    defabc
+ 0: defabc
+ 1: abc
+ 2: abc
+    \Zdefabc
+ 0: def
+ 1: def
+ 3: def
+  
+/the quick brown fox/P
+    the quick brown fox
+ 0: the quick brown fox
+    *** Failers 
+No match: POSIX code 17: match failed
+    The Quick Brown Fox 
+No match: POSIX code 17: match failed
+
+/the quick brown fox/Pi
+    the quick brown fox
+ 0: the quick brown fox
+    The Quick Brown Fox 
+ 0: The Quick Brown Fox
+
+/abc.def/P
+    *** Failers
+No match: POSIX code 17: match failed
+    abc\ndef
+No match: POSIX code 17: match failed
+    
+/abc$/P
+    abc
+ 0: abc
+    abc\n 
+ 0: abc
+
+/(abc)\2/P
+Failed: POSIX code 15: bad back reference at offset 7     
+
+/(abc\1)/P
+    abc
+No match: POSIX code 17: match failed
+
+/)/
+Failed: unmatched parentheses at offset 0
+
+/a[]b/
+Failed: missing terminating ] for character class at offset 4
+
+/[^aeiou ]{3,}/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+    co-processors, and for 
+ 0: -pr
+    
+/<.*>/
+Capturing subpattern count = 0
+No options
+First char = '<'
+Need char = '>'
+    abc<def>ghi<klm>nop
+ 0: <def>ghi<klm>
+
+/<.*?>/
+Capturing subpattern count = 0
+No options
+First char = '<'
+Need char = '>'
+    abc<def>ghi<klm>nop
+ 0: <def>
+
+/<.*>/U
+Capturing subpattern count = 0
+Options: ungreedy
+First char = '<'
+Need char = '>'
+    abc<def>ghi<klm>nop
+ 0: <def>
+    
+/<.*>(?U)/
+Capturing subpattern count = 0
+Options: ungreedy
+First char = '<'
+Need char = '>'
+    abc<def>ghi<klm>nop
+ 0: <def>
+
+/<.*?>/U
+Capturing subpattern count = 0
+Options: ungreedy
+First char = '<'
+Need char = '>'
+    abc<def>ghi<klm>nop
+ 0: <def>ghi<klm>
+    
+/={3,}/U
+Capturing subpattern count = 0
+Options: ungreedy
+First char = '='
+Need char = '='
+    abc========def
+ 0: ===
+    
+/(?U)={3,}?/
+Capturing subpattern count = 0
+Options: ungreedy
+First char = '='
+Need char = '='
+    abc========def
+ 0: ========
+    
+/(?<!bar|cattle)foo/
+Capturing subpattern count = 0
+No options
+First char = 'f'
+Need char = 'o'
+    foo
+ 0: foo
+    catfoo 
+ 0: foo
+    *** Failers
+No match
+    the barfoo
+No match
+    and cattlefoo   
+No match
+
+/(?<=a+)b/
+Failed: lookbehind assertion is not fixed length at offset 6
+
+/(?<=aaa|b{0,3})b/
+Failed: lookbehind assertion is not fixed length at offset 14
+
+/(?<!(foo)a\1)bar/
+Failed: lookbehind assertion is not fixed length at offset 12
+
+/(?i)abc/
+Capturing subpattern count = 0
+Options: caseless
+First char = 'a'
+Need char = 'c'
+
+/(a|(?m)a)/
+Capturing subpattern count = 1
+No options
+First char = 'a'
+No need char
+
+/(?i)^1234/
+Capturing subpattern count = 0
+Options: anchored caseless
+No first char
+Need char = '4'
+
+/(^b|(?i)^d)/
+Capturing subpattern count = 1
+Options: anchored
+Case state changes
+No first char
+No need char
+
+/(?s).*/
+Capturing subpattern count = 0
+Options: anchored dotall
+No first char
+No need char
+
+/[abcd]/S
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+Starting character set: a b c d 
+
+/(?i)[abcd]/S
+Capturing subpattern count = 0
+Options: caseless
+No first char
+No need char
+Starting character set: A B C D a b c d 
+
+/(?m)[xy]|(b|c)/S
+Capturing subpattern count = 1
+Options: multiline
+No first char
+No need char
+Starting character set: b c x y 
+
+/(^a|^b)/m
+Capturing subpattern count = 1
+Options: multiline
+First char at start or follows \n
+No need char
+
+/(?i)(^a|^b)/m
+Capturing subpattern count = 1
+Options: caseless multiline
+First char at start or follows \n
+No need char
+
+/(a)(?(1)a|b|c)/
+Failed: conditional group contains more than two branches at offset 13
+
+/(?(?=a)a|b|c)/
+Failed: conditional group contains more than two branches at offset 12
+
+/(?(1a)/
+Failed: malformed number after (?( at offset 4
+
+/(?(?i))/
+Failed: assertion expected after (?( at offset 3
+
+/(?(abc))/
+Failed: assertion expected after (?( at offset 3
+
+/(?(?<ab))/
+Failed: unrecognized character after (?< at offset 2
+
+/((?s)blah)\s+\1/
+Capturing subpattern count = 1
+Max back reference = 1
+No options
+First char = 'b'
+Need char = 'h'
+
+/((?i)blah)\s+\1/
+Capturing subpattern count = 1
+Max back reference = 1
+No options
+Case state changes
+No first char
+Need char = 'h'
+
+/((?i)b)/DS
+------------------------------------------------------------------
+  0  16 Bra 0
+  3   8 Bra 1
+  6  01 Opt
+  8   1 b
+ 11   8 Ket
+ 14  00 Opt
+ 16  16 Ket
+ 19     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+No options
+Case state changes
+No first char
+Need char = 'b'
+Starting character set: B b 
+
+/(a*b|(?i:c*(?-i)d))/S
+Capturing subpattern count = 1
+No options
+Case state changes
+No first char
+No need char
+Starting character set: C a b c d 
+
+/a$/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+    a
+ 0: a
+    a\n
+ 0: a
+    *** Failers 
+No match
+    \Za
+No match
+    \Za\n   
+No match
+
+/a$/m
+Capturing subpattern count = 0
+Options: multiline
+First char = 'a'
+No need char
+    a
+ 0: a
+    a\n
+ 0: a
+    \Za\n   
+ 0: a
+    *** Failers 
+No match
+    \Za
+No match
+    
+/\Aabc/m
+Capturing subpattern count = 0
+Options: anchored multiline
+No first char
+Need char = 'c'
+
+/^abc/m 
+Capturing subpattern count = 0
+Options: multiline
+First char at start or follows \n
+Need char = 'c'
+
+/^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/
+Capturing subpattern count = 5
+Options: anchored
+No first char
+Need char = 'a'
+  aaaaabbbbbcccccdef
+ 0: aaaaabbbbbcccccdef
+ 1: aaaaabbbbbcccccdef
+ 2: aaaaa
+ 3: b
+ 4: bbbbccccc
+ 5: def
+
+/(?<=foo)[ab]/S
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+Starting character set: a b 
+
+/(?<!foo)(alpha|omega)/S
+Capturing subpattern count = 1
+No options
+No first char
+Need char = 'a'
+Starting character set: a o 
+
+/(?!alphabet)[ab]/S
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+Starting character set: a b 
+
+/(?<=foo\n)^bar/m
+Capturing subpattern count = 0
+Options: multiline
+First char at start or follows \n
+Need char = 'r'
+
+/(?>^abc)/m
+Capturing subpattern count = 0
+Options: multiline
+First char at start or follows \n
+Need char = 'c'
+    abc
+ 0: abc
+    def\nabc
+ 0: abc
+    *** Failers
+No match
+    defabc   
+No match
+
+/(?<=ab(c+)d)ef/
+Failed: lookbehind assertion is not fixed length at offset 11
+
+/(?<=ab(?<=c+)d)ef/
+Failed: lookbehind assertion is not fixed length at offset 12
+
+/(?<=ab(c|de)f)g/
+Failed: lookbehind assertion is not fixed length at offset 13
+
+/The next three are in testinput2 because they have variable length branches/
+Capturing subpattern count = 0
+No options
+First char = 'T'
+Need char = 's'
+
+/(?<=bullock|donkey)-cart/
+Capturing subpattern count = 0
+No options
+First char = '-'
+Need char = 't'
+    the bullock-cart
+ 0: -cart
+    a donkey-cart race
+ 0: -cart
+    *** Failers
+No match
+    cart
+No match
+    horse-and-cart    
+No match
+      
+/(?<=ab(?i)x|y|z)/
+Capturing subpattern count = 0
+No options
+Case state changes
+No first char
+No need char
+
+/(?>.*)(?<=(abcd)|(xyz))/
+Capturing subpattern count = 2
+No options
+First char at start or follows \n
+No need char
+    alphabetabcd
+ 0: alphabetabcd
+ 1: abcd
+    endingxyz
+ 0: endingxyz
+ 1: <unset>
+ 2: xyz
+
+/(?<=ab(?i)x(?-i)y|(?i)z|b)ZZ/
+Capturing subpattern count = 0
+No options
+Case state changes
+First char = 'Z'
+Need char = 'Z'
+    abxyZZ
+ 0: ZZ
+    abXyZZ
+ 0: ZZ
+    ZZZ
+ 0: ZZ
+    zZZ
+ 0: ZZ
+    bZZ
+ 0: ZZ
+    BZZ     
+ 0: ZZ
+    *** Failers
+No match
+    ZZ 
+No match
+    abXYZZ 
+No match
+    zzz
+No match
+    bzz  
+No match
+
+/(?<!(foo)a)bar/
+Capturing subpattern count = 1
+No options
+First char = 'b'
+Need char = 'r'
+    bar
+ 0: bar
+    foobbar 
+ 0: bar
+    *** Failers
+No match
+    fooabar  
+No match
+
+/This one is here because Perl 5.005_02 doesn't fail it/
+Capturing subpattern count = 0
+No options
+First char = 'T'
+Need char = 't'
+
+/^(a)?(?(1)a|b)+$/
+Capturing subpattern count = 1
+Options: anchored
+No first char
+No need char
+    *** Failers
+No match
+    a 
+No match
+
+/This one is here because I think Perl 5.005_02 gets the setting of $1 wrong/
+Capturing subpattern count = 0
+No options
+First char = 'T'
+Need char = 'g'
+
+/^(a\1?){4}$/
+Capturing subpattern count = 1
+Max back reference = 1
+Options: anchored
+No first char
+Need char = 'a'
+    aaaaaa
+ 0: aaaaaa
+ 1: aa
+    
+/These are syntax tests from Perl 5.005/
+Capturing subpattern count = 0
+No options
+First char = 'T'
+Need char = '5'
+
+/a[b-a]/
+Failed: range out of order in character class at offset 4
+
+/a[]b/
+Failed: missing terminating ] for character class at offset 4
+
+/a[/
+Failed: missing terminating ] for character class at offset 2
+
+/*a/
+Failed: nothing to repeat at offset 0
+
+/(*)b/
+Failed: nothing to repeat at offset 1
+
+/abc)/
+Failed: unmatched parentheses at offset 3
+
+/(abc/
+Failed: missing ) at offset 4
+
+/a**/
+Failed: nothing to repeat at offset 2
+
+/)(/
+Failed: unmatched parentheses at offset 0
+
+/\1/
+Failed: back reference to non-existent subpattern at offset 2
+
+/\2/
+Failed: back reference to non-existent subpattern at offset 2
+
+/(a)|\2/
+Failed: back reference to non-existent subpattern at offset 6
+
+/a[b-a]/i
+Failed: range out of order in character class at offset 4
+
+/a[]b/i
+Failed: missing terminating ] for character class at offset 4
+
+/a[/i
+Failed: missing terminating ] for character class at offset 2
+
+/*a/i
+Failed: nothing to repeat at offset 0
+
+/(*)b/i
+Failed: nothing to repeat at offset 1
+
+/abc)/i
+Failed: unmatched parentheses at offset 3
+
+/(abc/i
+Failed: missing ) at offset 4
+
+/a**/i
+Failed: nothing to repeat at offset 2
+
+/)(/i
+Failed: unmatched parentheses at offset 0
+
+/:(?:/
+Failed: missing ) at offset 4
+
+/(?<%)b/
+Failed: unrecognized character after (?< at offset 0
+
+/a(?{)b/
+Failed: unrecognized character after (? at offset 3
+
+/a(?{{})b/
+Failed: unrecognized character after (? at offset 3
+
+/a(?{}})b/
+Failed: unrecognized character after (? at offset 3
+
+/a(?{"{"})b/
+Failed: unrecognized character after (? at offset 3
+
+/a(?{"{"}})b/
+Failed: unrecognized character after (? at offset 3
+
+/(?(1?)a|b)/
+Failed: malformed number after (?( at offset 4
+
+/(?(1)a|b|c)/
+Failed: conditional group contains more than two branches at offset 10
+
+/[a[:xyz:/
+Failed: missing terminating ] for character class at offset 8
+
+/(?<=x+)y/
+Failed: lookbehind assertion is not fixed length at offset 6
+
+/a{37,17}/
+Failed: numbers out of order in {} quantifier at offset 7
+
+/abc/\
+Failed: \ at end of pattern at offset 4
+
+/abc/\P
+Failed: POSIX code 9: bad escape sequence at offset 4     
+
+/abc/\i
+Failed: \ at end of pattern at offset 4
+
+/(a)bc(d)/
+Capturing subpattern count = 2
+No options
+First char = 'a'
+Need char = 'd'
+    abcd
+ 0: abcd
+ 1: a
+ 2: d
+    abcd\C2
+ 0: abcd
+ 1: a
+ 2: d
+ 2C d (1)
+    abcd\C5
+ 0: abcd
+ 1: a
+ 2: d
+copy substring 5 failed -7
+     
+/(.{20})/
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+    abcdefghijklmnopqrstuvwxyz
+ 0: abcdefghijklmnopqrst
+ 1: abcdefghijklmnopqrst
+    abcdefghijklmnopqrstuvwxyz\C1
+ 0: abcdefghijklmnopqrst
+ 1: abcdefghijklmnopqrst
+copy substring 1 failed -6
+    abcdefghijklmnopqrstuvwxyz\G1
+ 0: abcdefghijklmnopqrst
+ 1: abcdefghijklmnopqrst
+ 1G abcdefghijklmnopqrst (20)
+     
+/(.{15})/
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+    abcdefghijklmnopqrstuvwxyz
+ 0: abcdefghijklmno
+ 1: abcdefghijklmno
+    abcdefghijklmnopqrstuvwxyz\C1\G1
+ 0: abcdefghijklmno
+ 1: abcdefghijklmno
+ 1C abcdefghijklmno (15)
+ 1G abcdefghijklmno (15)
+
+/(.{16})/
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+    abcdefghijklmnopqrstuvwxyz
+ 0: abcdefghijklmnop
+ 1: abcdefghijklmnop
+    abcdefghijklmnopqrstuvwxyz\C1\G1\L
+ 0: abcdefghijklmnop
+ 1: abcdefghijklmnop
+copy substring 1 failed -6
+ 1G abcdefghijklmnop (16)
+ 0L abcdefghijklmnop
+ 1L abcdefghijklmnop
+    
+/^(a|(bc))de(f)/
+Capturing subpattern count = 3
+Options: anchored
+No first char
+Need char = 'f'
+    adef\G1\G2\G3\G4\L 
+ 0: adef
+ 1: a
+ 2: <unset>
+ 3: f
+ 1G a (1)
+ 2G  (0)
+ 3G f (1)
+get substring 4 failed -7
+ 0L adef
+ 1L a
+ 2L 
+ 3L f
+    bcdef\G1\G2\G3\G4\L 
+ 0: bcdef
+ 1: bc
+ 2: bc
+ 3: f
+ 1G bc (2)
+ 2G bc (2)
+ 3G f (1)
+get substring 4 failed -7
+ 0L bcdef
+ 1L bc
+ 2L bc
+ 3L f
+    adefghijk\C0 
+ 0: adef
+ 1: a
+ 2: <unset>
+ 3: f
+ 0C adef (4)
+    
+/^abc\00def/
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 'f'
+    abc\00def\L\C0 
+ 0: abc\x00def
+ 0C abc (7)
+ 0L abc
+    
+/word ((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ 
+)((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ 
+)?)?)?)?)?)?)?)?)?otherword/M
+Memory allocation (code space): 428
+Capturing subpattern count = 8
+No options
+First char = 'w'
+Need char = 'd'
+
+/.*X/D
+------------------------------------------------------------------
+  0   8 Bra 0
+  3     Any*
+  5   1 X
+  8   8 Ket
+ 11     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+No options
+First char at start or follows \n
+Need char = 'X'
+
+/.*X/Ds
+------------------------------------------------------------------
+  0   8 Bra 0
+  3     Any*
+  5   1 X
+  8   8 Ket
+ 11     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored dotall
+No first char
+Need char = 'X'
+
+/(.*X|^B)/D
+------------------------------------------------------------------
+  0  21 Bra 0
+  3   8 Bra 1
+  6     Any*
+  8   1 X
+ 11   7 Alt
+ 14     ^
+ 15   1 B
+ 18  15 Ket
+ 21  21 Ket
+ 24     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+No options
+First char at start or follows \n
+No need char
+
+/(.*X|^B)/Ds
+------------------------------------------------------------------
+  0  21 Bra 0
+  3   8 Bra 1
+  6     Any*
+  8   1 X
+ 11   7 Alt
+ 14     ^
+ 15   1 B
+ 18  15 Ket
+ 21  21 Ket
+ 24     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Options: anchored dotall
+No first char
+No need char
+    
+/(?s)(.*X|^B)/D
+------------------------------------------------------------------
+  0  21 Bra 0
+  3   8 Bra 1
+  6     Any*
+  8   1 X
+ 11   7 Alt
+ 14     ^
+ 15   1 B
+ 18  15 Ket
+ 21  21 Ket
+ 24     End
+------------------------------------------------------------------
+Capturing subpattern count = 1
+Options: anchored dotall
+No first char
+No need char
+
+/(?s:.*X|^B)/D
+------------------------------------------------------------------
+  0  27 Bra 0
+  3  10 Bra 0
+  6  04 Opt
+  8     Any*
+ 10   1 X
+ 13   9 Alt
+ 16  04 Opt
+ 18     ^
+ 19   1 B
+ 22  19 Ket
+ 25  00 Opt
+ 27  27 Ket
+ 30     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+No options
+First char at start or follows \n
+No need char
+
+/\Biss\B/+
+Capturing subpattern count = 0
+No options
+First char = 'i'
+Need char = 's'
+    Mississippi
+ 0: iss
+ 0+ issippi
+
+/\Biss\B/+P
+    Mississippi
+ 0: iss
+ 0+ issippi
+
+/iss/G+
+Capturing subpattern count = 0
+No options
+First char = 'i'
+Need char = 's'
+    Mississippi
+ 0: iss
+ 0+ issippi
+ 0: iss
+ 0+ ippi
+
+/\Biss\B/G+
+Capturing subpattern count = 0
+No options
+First char = 'i'
+Need char = 's'
+    Mississippi
+ 0: iss
+ 0+ issippi
+
+/\Biss\B/g+
+Capturing subpattern count = 0
+No options
+First char = 'i'
+Need char = 's'
+    Mississippi
+ 0: iss
+ 0+ issippi
+ 0: iss
+ 0+ ippi
+    *** Failers
+No match
+    Mississippi\A
+No match
+
+/(?<=[Ms])iss/g+
+Capturing subpattern count = 0
+No options
+First char = 'i'
+Need char = 's'
+    Mississippi
+ 0: iss
+ 0+ issippi
+ 0: iss
+ 0+ ippi
+
+/(?<=[Ms])iss/G+
+Capturing subpattern count = 0
+No options
+First char = 'i'
+Need char = 's'
+    Mississippi
+ 0: iss
+ 0+ issippi
+
+/^iss/g+
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 's'
+    ississippi
+ 0: iss
+ 0+ issippi
+    
+/.*iss/g+
+Capturing subpattern count = 0
+No options
+First char at start or follows \n
+Need char = 's'
+    abciss\nxyzisspqr 
+ 0: abciss
+ 0+ \x0axyzisspqr
+ 0: xyziss
+ 0+ pqr
+
+/.i./+g
+Capturing subpattern count = 0
+No options
+No first char
+Need char = 'i'
+    Mississippi
+ 0: Mis
+ 0+ sissippi
+ 0: sis
+ 0+ sippi
+ 0: sip
+ 0+ pi
+    Mississippi\A
+ 0: Mis
+ 0+ sissippi
+ 0: sis
+ 0+ sippi
+ 0: sip
+ 0+ pi
+    Missouri river
+ 0: Mis
+ 0+ souri river
+ 0: ri 
+ 0+ river
+ 0: riv
+ 0+ er
+    Missouri river\A  
+ 0: Mis
+ 0+ souri river
+
+/^.is/+g
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 's'
+    Mississippi
+ 0: Mis
+ 0+ sissippi
+
+/^ab\n/g+
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 10
+    ab\nab\ncd
+ 0: ab\x0a
+ 0+ ab\x0acd
+
+/^ab\n/mg+
+Capturing subpattern count = 0
+Options: multiline
+First char at start or follows \n
+Need char = 10
+    ab\nab\ncd
+ 0: ab\x0a
+ 0+ ab\x0acd
+ 0: ab\x0a
+ 0+ cd
+
+/abc/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'c'
+
+/abc|bac/
+Capturing subpattern count = 0
+No options
+No first char
+Need char = 'c'
+
+/(abc|bac)/
+Capturing subpattern count = 1
+No options
+No first char
+Need char = 'c'
+
+/(abc|(c|dc))/
+Capturing subpattern count = 2
+No options
+No first char
+Need char = 'c'
+
+/(abc|(d|de)c)/
+Capturing subpattern count = 2
+No options
+No first char
+Need char = 'c'
+
+/a*/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+
+/a+/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/(baa|a+)/
+Capturing subpattern count = 1
+No options
+No first char
+Need char = 'a'
+
+/a{0,3}/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+
+/baa{3,}/
+Capturing subpattern count = 0
+No options
+First char = 'b'
+Need char = 'a'
+
+/"([^\\"]+|\\.)*"/
+Capturing subpattern count = 1
+No options
+First char = '"'
+Need char = '"'
+
+/(abc|ab[cd])/
+Capturing subpattern count = 1
+No options
+First char = 'a'
+No need char
+
+/(a|.)/
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+
+/a|ba|\w/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+
+/abc(?=pqr)/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'r'
+
+/...(?<=abc)/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+
+/abc(?!pqr)/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'c'
+
+/ab./
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'b'
+
+/ab[xyz]/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'b'
+
+/abc*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'b'
+
+/ab.c*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'b'
+
+/a.c*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/.c*/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+
+/ac*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/(a.c*|b.c*)/
+Capturing subpattern count = 1
+No options
+No first char
+No need char
+
+/a.c*|aba/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/.+a/
+Capturing subpattern count = 0
+No options
+No first char
+Need char = 'a'
+
+/(?=abcda)a.*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/(?=a)a.*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/a(b)*/
+Capturing subpattern count = 1
+No options
+First char = 'a'
+No need char
+
+/a\d*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/ab\d*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'b'
+
+/a(\d)*/
+Capturing subpattern count = 1
+No options
+First char = 'a'
+No need char
+
+/abcde{0,0}/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'd'
+
+/ab\d+/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'b'
+
+/a(?(1)b)/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/a(?(1)bag|big)/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'g'
+
+/a(?(1)bag|big)*/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+No need char
+
+/a(?(1)bag|big)+/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'g'
+
+/a(?(1)b..|b..)/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'b'
+
+/ab\d{0}e/
+Capturing subpattern count = 0
+No options
+First char = 'a'
+Need char = 'e'
+
+/a?b?/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+    a
+ 0: a
+    b
+ 0: b
+    ab
+ 0: ab
+    \
+ 0: 
+    *** Failers
+ 0: 
+    \N     
+No match
+    
+/|-/
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+    abcd
+ 0: 
+    -abc
+ 0: 
+    \Nab-c
+ 0: -
+    *** Failers
+ 0: 
+    \Nabc     
+No match
+
+/a*(b+)(z)(z)/P
+    aaaabbbbzzzz
+ 0: aaaabbbbzz
+ 1: bbbb
+ 2: z
+ 3: z
+    aaaabbbbzzzz\O0
+    aaaabbbbzzzz\O1
+ 0: aaaabbbbzz
+    aaaabbbbzzzz\O2
+ 0: aaaabbbbzz
+ 1: bbbb
+    aaaabbbbzzzz\O3
+ 0: aaaabbbbzz
+ 1: bbbb
+ 2: z
+    aaaabbbbzzzz\O4
+ 0: aaaabbbbzz
+ 1: bbbb
+ 2: z
+ 3: z
+    aaaabbbbzzzz\O5
+ 0: aaaabbbbzz
+ 1: bbbb
+ 2: z
+ 3: z
+    
+/^.?abcd/S 
+Capturing subpattern count = 0
+Options: anchored
+No first char
+Need char = 'd'
+Study returned NULL
+
+/\(             # ( at start
+  (?:           # Non-capturing bracket
+  (?>[^()]+)    # Either a sequence of non-brackets (no backtracking)
+  |             # Or
+  (?R)          # Recurse - i.e. nested bracketed string
+  )*            # Zero or more contents
+  \)            # Closing )
+  /x
+Capturing subpattern count = 0
+Options: extended
+First char = '('
+Need char = ')'
+    (abcd)
+ 0: (abcd)
+    (abcd)xyz
+ 0: (abcd)
+    xyz(abcd)
+ 0: (abcd)
+    (ab(xy)cd)pqr 
+ 0: (ab(xy)cd)
+    (ab(xycd)pqr 
+ 0: (xycd)
+    () abc () 
+ 0: ()
+    12(abcde(fsh)xyz(foo(bar))lmno)89
+ 0: (abcde(fsh)xyz(foo(bar))lmno)
+    *** Failers
+No match
+    abcd 
+No match
+    abcd)
+No match
+    (abcd  
+No match
+
+/\(  ( (?>[^()]+) | (?R) )* \) /xg
+Capturing subpattern count = 1
+Options: extended
+First char = '('
+Need char = ')'
+    (ab(xy)cd)pqr 
+ 0: (ab(xy)cd)
+ 1: cd
+    1(abcd)(x(y)z)pqr
+ 0: (abcd)
+ 1: abcd
+ 0: (x(y)z)
+ 1: z
+
+/\(  (?: (?>[^()]+) | (?R) ) \) /x
+Capturing subpattern count = 0
+Options: extended
+First char = '('
+Need char = ')'
+    (abcd)
+ 0: (abcd)
+    (ab(xy)cd)
+ 0: (xy)
+    (a(b(c)d)e) 
+ 0: (c)
+    ((ab)) 
+ 0: ((ab))
+    *** Failers
+No match
+    ()   
+No match
+
+/\(  (?: (?>[^()]+) | (?R) )? \) /x
+Capturing subpattern count = 0
+Options: extended
+First char = '('
+Need char = ')'
+    ()
+ 0: ()
+    12(abcde(fsh)xyz(foo(bar))lmno)89
+ 0: (fsh)
+
+/\(  ( (?>[^()]+) | (?R) )* \) /x
+Capturing subpattern count = 1
+Options: extended
+First char = '('
+Need char = ')'
+    (ab(xy)cd)
+ 0: (ab(xy)cd)
+ 1: cd
+
+/\( ( ( (?>[^()]+) | (?R) )* ) \) /x
+Capturing subpattern count = 2
+Options: extended
+First char = '('
+Need char = ')'
+    (ab(xy)cd)
+ 0: (ab(xy)cd)
+ 1: ab(xy)cd
+ 2: cd
+
+/\( (123)? ( ( (?>[^()]+) | (?R) )* ) \) /x
+Capturing subpattern count = 3
+Options: extended
+First char = '('
+Need char = ')'
+    (ab(xy)cd)
+ 0: (ab(xy)cd)
+ 1: <unset>
+ 2: ab(xy)cd
+ 3: cd
+    (123ab(xy)cd)
+ 0: (123ab(xy)cd)
+ 1: 123
+ 2: ab(xy)cd
+ 3: cd
+
+/\( ( (123)? ( (?>[^()]+) | (?R) )* ) \) /x
+Capturing subpattern count = 3
+Options: extended
+First char = '('
+Need char = ')'
+    (ab(xy)cd)
+ 0: (ab(xy)cd)
+ 1: ab(xy)cd
+ 2: <unset>
+ 3: cd
+    (123ab(xy)cd)
+ 0: (123ab(xy)cd)
+ 1: 123ab(xy)cd
+ 2: 123
+ 3: cd
+
+/\( (((((((((( ( (?>[^()]+) | (?R) )* )))))))))) \) /x
+Capturing subpattern count = 11
+Options: extended
+First char = '('
+Need char = ')'
+    (ab(xy)cd)
+ 0: (ab(xy)cd)
+ 1: ab(xy)cd
+ 2: ab(xy)cd
+ 3: ab(xy)cd
+ 4: ab(xy)cd
+ 5: ab(xy)cd
+ 6: ab(xy)cd
+ 7: ab(xy)cd
+ 8: ab(xy)cd
+ 9: ab(xy)cd
+10: ab(xy)cd
+11: cd
+
+/\( ( ( (?>[^()<>]+) | ((?>[^()]+)) | (?R) )* ) \) /x
+Capturing subpattern count = 3
+Options: extended
+First char = '('
+Need char = ')'
+    (abcd(xyz<p>qrs)123)
+ 0: (abcd(xyz<p>qrs)123)
+ 1: abcd(xyz<p>qrs)123
+ 2: 123
+ 3: <p>qrs
+
+/\( ( ( (?>[^()]+) | ((?R)) )* ) \) /x
+Capturing subpattern count = 3
+Options: extended
+First char = '('
+Need char = ')'
+    (ab(cd)ef)
+ 0: (ab(cd)ef)
+ 1: ab(cd)ef
+ 2: ef
+ 3: (cd)
+    (ab(cd(ef)gh)ij)
+ 0: (ab(cd(ef)gh)ij)
+ 1: ab(cd(ef)gh)ij
+ 2: ij
+ 3: (cd(ef)gh)
+
+/^[[:alnum:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [0-9A-Za-z]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:alpha:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [A-Za-z]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+             
+/^[[:ascii:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [\x00-\x7f]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:cntrl:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [\x00-\x1f\x7f]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:digit:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [0-9]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:graph:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [!-~]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:lower:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [a-z]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:print:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [ -~]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:punct:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [!-/:-@[-`{-~]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:space:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [\x09-\x0d ]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:upper:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [A-Z]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:xdigit:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [0-9A-Fa-f]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:word:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [0-9A-Z_a-z]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[[:^cntrl:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [ -~\x80-\xff]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/^[12[:^digit:]]/D
+------------------------------------------------------------------
+  0  37 Bra 0
+  3     ^
+  4     [\x00-/1-2:-\xff]
+ 37  37 Ket
+ 40     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+Options: anchored
+No first char
+No need char
+
+/[01[:alpha:]%]/D
+------------------------------------------------------------------
+  0  36 Bra 0
+  3     [%0-1A-Za-z]
+ 36  36 Ket
+ 39     End
+------------------------------------------------------------------
+Capturing subpattern count = 0
+No options
+No first char
+No need char
+
+/[[.ch.]]/
+Failed: POSIX collating elements are not supported at offset 1
+
+/[[=ch=]]/
+Failed: POSIX collating elements are not supported at offset 1
+
+/[[:rhubarb:]]/
+Failed: unknown POSIX class name at offset 3
+
+/[[:upper:]]/i
+Capturing subpattern count = 0
+Options: caseless
+No first char
+No need char
+    A
+ 0: A
+    a 
+ 0: a
+    
+/[[:lower:]]/i
+Capturing subpattern count = 0
+Options: caseless
+No first char
+No need char
+    A
+ 0: A
+    a 
+ 0: a
+
+/((?-i)[[:lower:]])[[:lower:]]/i
+Capturing subpattern count = 1
+Options: caseless
+Case state changes
+No first char
+No need char
+    ab
+ 0: ab
+ 1: a
+    aB
+ 0: aB
+ 1: a
+    *** Failers
+ 0: ai
+ 1: a
+    Ab
+No match
+    AB        
+No match
+
+/[\200-\410]/
+Failed: range out of order in character class at offset 9
+
+/^(?(0)f|b)oo/
+Failed: invalid condition (?(0) at offset 5
+
+/This one's here because of the large output vector needed/
+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)/
+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/
+Capturing subpattern count = 0
+No options
+First char = 'T'
+Need char = 't'
+
+/(main(O)?)+/
+Capturing subpattern count = 2
+No options
+First char = 'm'
+Need char = 'n'
+    mainmain
+ 0: mainmain
+ 1: main
+    mainOmain
+ 0: mainOmain
+ 1: main
+ 2: O
+    
+/ End of testinput2 /
+Capturing subpattern count = 0
+No options
+First char = ' '
+Need char = ' '
+