/[pcre]/code/trunk/testdata/testoutput2

Diff of /code/trunk/testdata/testoutput2

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-revision 449 by ph10,
Wed Sep 16 08:48:17 2009 UTC
+revision 697 by ph10,
Mon Sep 19 12:28:24 2011 UTC
 Line 1
+ /-- 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. --/
+ /-- Originally, the Perl >= 5.10 things were in here too, but now I have
+     separated many (most?) of them out into test 11. However, there may still
+     be some that were overlooked. --/
  /(a)b|/I
  Capturing subpattern count = 1
  No options
-Line 92 
 Failed: missing terminating ] for charac
+Line 103 
 Failed: missing terminating ] for charac
  /(?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
-Line 134 
 Capturing subpattern count = 0
+Line 175 
 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
 : cat
-Line 145 
 Capturing subpattern count = 0
+Line 187 
 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
 : CAT
-Line 156 
 Capturing subpattern count = 0
+Line 199 
 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
-Line 163 
 Capturing subpattern count = 1
+Line 207 
 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 ! " # $ % & ' ( ) * + , - . / : ; < = >
-Line 183 
 Capturing subpattern count = 1
+Line 228 
 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)/
-Line 516 
 Capturing subpattern count = 0
+Line 562 
 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
-Line 523 
 Capturing subpattern count = 0
+Line 570 
 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
-Line 530 
 Capturing subpattern count = 1
+Line 578 
 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
-Line 583 
 Need char = 'h' (caseless)
+Line 632 
 Need char = 'h' (caseless)
  ------------------------------------------------------------------
          Bra
          CBra 1
-Opt
+      /i b
-      NC b
          Ket
-Opt
          Ket
          End
  ------------------------------------------------------------------
-Line 594 
 Capturing subpattern count = 1
+Line 641 
 Capturing subpattern count = 1
  No options
  First char = 'b' (caseless)
  No need char
- Study returned NULL
+ 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
-Line 665 
 Capturing subpattern count = 0
+Line 714 
 Capturing subpattern count = 0
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b
  /(?<!foo)(alpha|omega)/IS
-Line 672 
 Capturing subpattern count = 1
+Line 722 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'a'
+ Subject length lower bound = 5
  Starting byte set: a o
  /(?!alphabet)[ab]/IS
-Line 679 
 Capturing subpattern count = 0
+Line 730 
 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
-Line 833 
 No match
+Line 885 
 No match
      a
  No match
- /This one is here because I think Perl 5.005_02 gets the setting of $1 wrong/I
+ /This one is here because Perl behaves differently; see also the following/I
  Capturing subpattern count = 0
  No options
  First char = 'T'
-Line 845 
 Max back reference = 1
+Line 897 
 Max back reference = 1
  Options: anchored
  No first char
  No need char
+     aaaa
+ No match
      aaaaaa
-: aaaaaa
+ No match
-: aa
+ /Perl does not fail these two for the final subjects. Neither did PCRE until/
+ /release 8.01. The problem is in backtracking into a subpattern that contains/
+ No match
+ /a recursive reference to itself. PCRE has now made these into atomic patterns./
+ No match
+ /^(xa|=?\1a){2}$/
+     xa=xaa
+: xa=xaa
+: =xaa
+     ** Failers
+ No match
+     xa=xaaa
+ No match
+ /^(xa|=?\1a)+$/
+     xa=xaa
+: xa=xaa
+: =xaa
+     ** Failers
+ No match
+     xa=xaaa
+ No match
  /These are syntax tests from Perl 5.005/I
  Capturing subpattern count = 0
-Line 1168 
 No need char
+Line 1245 
 No need char
  ------------------------------------------------------------------
          Bra
          Bra
-Opt
          AllAny*
          X
          Alt
-Opt
          ^
          B
          Ket
-Opt
          Ket
          End
  ------------------------------------------------------------------
-Line 1647 
 Capturing subpattern count = 0
+Line 1721 
 Capturing subpattern count = 0
  Options: anchored
  No first char
  Need char = 'd'
- Study returned NULL
+ Subject length lower bound = 4
+ No set of starting bytes
  /\(             # ( at start
    (?:           # Non-capturing bracket
-Line 1879 
 Capturing subpattern count = 0
+Line 1954 
 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
-Line 1940 
 Contains explicit CR or LF match
+Line 2016 
 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
-Line 2682 
 No need char
+Line 2759 
 No need char
  ------------------------------------------------------------------
          Bra
          a
-Opt
+      /i b
-      NC b
          Ket
          End
  ------------------------------------------------------------------
-Line 2705 
 No match
+Line 2781 
 No match
          Bra
          CBra 1
          a
-Opt
+      /i b
-      NC b
          Ket
-Opt
          Ket
          End
  ------------------------------------------------------------------
-Line 2730 
 No match
+Line 2804 
 No match
  /   (?i)abc/IxDZ
  ------------------------------------------------------------------
          Bra
-      NC abc
+      /i abc
          Ket
          End
  ------------------------------------------------------------------
-Line 2743 
 Need char = 'c' (caseless)
+Line 2817 
 Need char = 'c' (caseless)
    (?i)abc/IxDZ
  ------------------------------------------------------------------
          Bra
-      NC abc
+      /i abc
          Ket
          End
  ------------------------------------------------------------------
-Line 2916 
 No need char
+Line 2990 
 No need char
  /(x)*+/DZ
  ------------------------------------------------------------------
          Bra
-         Once
+         Braposzero
-         Brazero
+         CBraPos 1
-         CBra 1
          x
-         KetRmax
+         KetRpos
-         Ket
          Ket
          End
  ------------------------------------------------------------------
-Line 3146 
 Failed: POSIX collating elements are not
+Line 3218 
 Failed: POSIX collating elements are not
  Failed: POSIX named classes are supported only within a class at offset 0
  /\l/I
- Failed: PCRE does not support \L, \l, \N, \U, or \u at offset 1
+ 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, \U, or \u at offset 1
+ 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, \U, or \u at offset 1
+ 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, \U, or \u at offset 1
+ 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, \U, or \u at offset 1
+ 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
-Line 3410 
 Capturing subpattern count = 0
+Line 3482 
 Capturing subpattern count = 0
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b
  /[^a]/I
-Line 3429 
 Capturing subpattern count = 0
+Line 3502 
 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
-Line 3462 
 Capturing subpattern count = 0
+Line 3536 
 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
-Line 3469 
 Capturing subpattern count = 0
+Line 3544 
 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
-Line 3504 
 Need char = 'f'
+Line 3580 
 Need char = 'f'
    ^    ^     f
 : abcdef
- /(?C1)\dabc(?C2)def/I
+ /(?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
+abcdef
+ --->1234abcdef
+^              \d
+ ^             \d
+  ^            \d
+   ^           \d
+   ^   ^       d
+: 4abcdef
+     *** Failers
+ No match
+     abcdef
+ No match
+ /(?C1)\dabc(?C2)def/ISS
  Capturing subpattern count = 0
  No options
  No first char
-Line 3819 
 Capturing subpattern count = 0
+Line 3915 
 Capturing subpattern count = 0
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b
  /(?R)/I
-Line 3907 
 Need char = '<'
+Line 4004 
 Need char = '<'
          Bra
          CBra 1
          a
-         Once
          Recurse
-         Ket
          b
          Ket
          Ket
-Line 3938 
 No options
+Line 4033 
 No options
  First char = 'a'
  Need char = 'b'
- /^\W*(?:((.)\W*(?1)\W*\2|)|((.)\W*(?3)\W*\4|\W*.\W*))\W*$/Ii
- Capturing subpattern count = 4
- Max back reference = 4
- Options: anchored caseless
- No first char
- No need char
-: 1221
-: 1221
-: 1
-     Satan, oscillate my metallic sonatas!
-: Satan, oscillate my metallic sonatas!
-: <unset>
-: <unset>
-: Satan, oscillate my metallic sonatas
-: S
-     A man, a plan, a canal: Panama!
-: A man, a plan, a canal: Panama!
-: <unset>
-: <unset>
-: A man, a plan, a canal: Panama
-: A
-     Able was I ere I saw Elba.
-: Able was I ere I saw Elba.
-: <unset>
-: <unset>
-: Able was I ere I saw Elba
-: A
-     *** Failers
- No match
-     The quick brown fox
- No match
  /^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/I
  Capturing subpattern count = 2
  Options: anchored
-Line 4163 
 Need char = 'a'
+Line 4225 
 Need char = 'a'
          Any
          \1
          bbb
-         Once
          Recurse
-         Ket
          d
          Ket
          End
-Line 4370 
 No first char
+Line 4430 
 No first char
  Need char = 'z'
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazzbbbbbb\M
  Minimum match() limit = 8
- Minimum match() recursion limit = 6
+ Minimum match() recursion limit = 7
 : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaazz
 : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    aaaaaaaaaaaaaz\M
  Minimum match() limit = 32768
- Minimum match() recursion limit = 42
+ Minimum match() recursion limit = 43
  No match
  /(aaa(?C1)bbb|ab)/I
-Line 4537 
 Need char = ']'
+Line 4597 
 Need char = ']'
          a
          CBra 2
          b
-         Once
          Recurse
-         Ket
          c
          Ket
          Ket
-Line 4559 
 No need char
+Line 4617 
 No need char
          a
          CBra 2
          b
-         Once
          Recurse
-         Ket
          c
          Ket
          KetRmax
-Line 4582 
 No need char
+Line 4638 
 No need char
          a
          CBra 2
          b
-         Once
          Recurse
-         Ket
          c
          Ket
          Ket
-Line 4593 
 No need char
+Line 4647 
 No need char
          a
          CBra 2
          b
-         Once
          Recurse
-         Ket
          c
          Ket
          Ket
-Line 4636 
 Capturing subpattern count = 3
+Line 4688 
 Capturing subpattern count = 3
  Options: caseless
  No first char
  Need char = 'g' (caseless)
- Study returned NULL
+ Subject length lower bound = 8
+ No set of starting bytes
       Baby Bjorn Active Carrier - With free SHIPPING!!
 : Baby Bjorn Active Carrier - With free SHIPPING!!
 : Baby Bjorn Active Carrier - With free SHIPPING!!
-Line 4654 
 Capturing subpattern count = 0
+Line 4707 
 Capturing subpattern count = 0
  No options
  No first char
  Need char = 'b'
- Study returned NULL
+ Subject length lower bound = 1
+ No set of starting bytes
  /(a|b)*.?c/ISDZ
  ------------------------------------------------------------------
-Line 4674 
 Capturing subpattern count = 1
+Line 4728 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'c'
- Study returned NULL
+ Subject length lower bound = 1
+ No set of starting bytes
  /abc(?C255)de(?C)f/DZ
  ------------------------------------------------------------------
-Line 4731 
 Need char = 'e'
+Line 4786 
 Need char = 'e'
   +4 ^   ^      e
  No match
- /a*b/ICDZ
+ /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 ^ ^
+: ab
+   aaaab
+ --->aaaab
+  +0 ^         a*
+  +2 ^   ^     b
+  +3 ^    ^
+: aaaab
+   aaaacb
+ --->aaaacb
+  +0 ^          a*
+  +2 ^   ^      b
+  +0  ^         a*
+  +2  ^  ^      b
+  +0   ^        a*
+  +2   ^ ^      b
+  +0    ^       a*
+  +2    ^^      b
+  +0      ^     a*
+  +2      ^     b
+  +3      ^^
+: b
+ /a*b/ICDZSS
  ------------------------------------------------------------------
          Bra
          Callout 255 0 2
-Line 4814 
 Need char = 'b'
+Line 4913 
 Need char = 'b'
   +2    ^^      b
  No match
- /(abc|def)x/ICDZ
+ /(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 ^   ^
+: abcx
+: abc
+   defx
+ --->defx
+  +0 ^        (abc|def)
+  +1 ^        a
+  +5 ^        d
+  +6 ^^       e
+  +7 ^ ^      f
+  +8 ^  ^     )
+  +9 ^  ^     x
+ +10 ^   ^
+: defx
+: 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
-Line 4868 
 Need char = 'x'
+Line 5043 
 Need char = 'x'
  +10 ^   ^
 : defx
 : def
+   ** Failers
+ No match
    abcdefzx
  --->abcdefzx
   +0 ^            (abc|def)
-Line 4968 
 No need char
+Line 5145 
 No need char
 : abcdcdcd
 : cd
- /([ab]{,4}c|xy)/ICDZ
+ /([ab]{,4}c|xy)/ICDZS
  ------------------------------------------------------------------
          Bra
          Callout 255 0 14
-Line 5001 
 Capturing subpattern count = 1
+Line 5178 
 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]
- +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)
+  +0                                 ^                ([ab]{,4}c|xy)
-  +1          ^                                       [ab]
+  +1                                 ^                [ab]
- +11          ^                                       x
+  +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
+         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
-Line 5420 
 No match
+Line 5648 
 No match
 \P
  No match
- /abc/I>testsavedregex
+ /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
+: abc
+     ** Failers
+ No match
+     bca
+ No match
+ /abc/ISS>testsavedregex
  Capturing subpattern count = 0
  No options
  First char = 'a'
  Need char = 'c'
- Compiled regex written to testsavedregex
+ Compiled pattern written to testsavedregex
  <testsavedregex
- Compiled regex loaded from testsavedregex
+ Compiled pattern loaded from testsavedregex
  No study data
      abc
 : abc
-Line 5436 
 No match
+Line 5683 
 No match
      bca
  No match
- /abc/IF>testsavedregex
+ /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
+: abc
+     ** Failers
+ No match
+     bca
+ No match
+ /abc/IFSS>testsavedregex
  Capturing subpattern count = 0
  No options
  First char = 'a'
  Need char = 'c'
- Compiled regex written to testsavedregex
+ Compiled pattern written to testsavedregex
  <testsavedregex
- Compiled regex (byte-inverted) loaded from testsavedregex
+ Compiled pattern (byte-inverted) loaded from testsavedregex
  No study data
      abc
 : abc
-Line 5457 
 Capturing subpattern count = 1
+Line 5723 
 Capturing subpattern count = 1
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b
- Compiled regex written to testsavedregex
+ Compiled pattern written to testsavedregex
  Study data written to testsavedregex
  <testsavedregex
- Compiled regex loaded from testsavedregex
+ Compiled pattern loaded from testsavedregex
  Study data loaded from testsavedregex
      abc
 : a
-Line 5472 
 Study data loaded from testsavedregex
+Line 5739 
 Study data loaded from testsavedregex
      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
+: a
+: a
+     ** Failers
+: a
+: 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 regex written to testsavedregex
+ Compiled pattern written to testsavedregex
  Study data written to testsavedregex
  <testsavedregex
- Compiled regex (byte-inverted) loaded from testsavedregex
+ Compiled pattern (byte-inverted) loaded from testsavedregex
  Study data loaded from testsavedregex
      abc
 : a
-Line 5492 
 Study data loaded from testsavedregex
+Line 5778 
 Study data loaded from testsavedregex
      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
+: a
+: a
+     ** Failers
+: a
+: a
+     def
+ No match
  ~<(\w+)/?>(.)*</(\1)>~smgI
  Capturing subpattern count = 3
  Max back reference = 1
  Options: multiline dotall
  First char = '<'
  Need char = '>'
-     <!DOCTYPE seite SYSTEM "http://www.lco.lineas.de/xmlCms.dtd">\n<seite>\n<dokumenteninformation>\n<seitentitel>Partner der LCO</seitentitel>\n<sprache>de</sprache>\n<seitenbeschreibung>Partner der LINEAS Consulting\nGmbH</seitenbeschreibung>\n<schluesselworte>LINEAS Consulting GmbH Hamburg\nPartnerfirmen</schluesselworte>\n<revisit>30 days</revisit>\n<robots>index,follow</robots>\n<menueinformation>\n<aktiv>ja</aktiv>\n<menueposition>3</menueposition>\n<menuetext>Partner</menuetext>\n</menueinformation>\n<lastedited>\n<autor>LCO</autor>\n<firma>LINEAS Consulting</firma>\n<datum>15.10.2003</datum>\n</lastedited>\n</dokumenteninformation>\n<inhalt>\n\n<absatzueberschrift>Die Partnerfirmen der LINEAS Consulting\nGmbH</absatzueberschrift>\n\n<absatz><link ziel="http://www.ca.com/" zielfenster="_blank">\n<bild name="logo_ca.gif" rahmen="no"/></link> <link\nziel="http://www.ey.com/" zielfenster="_blank"><bild\nname="logo_euy.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><link ziel="http://www.cisco.de/" zielfenster="_blank">\n<bild name="logo_cisco.gif" rahmen="ja"/></link></absatz>\n\n<absatz><link ziel="http://www.atelion.de/"\nzielfenster="_blank"><bild\nname="logo_atelion.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><link ziel="http://www.line-information.de/"\nzielfenster="_blank">\n<bild name="logo_line_information.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><bild name="logo_aw.gif" rahmen="no"/></absatz>\n\n<absatz><link ziel="http://www.incognis.de/"\nzielfenster="_blank"><bild\nname="logo_incognis.gif" rahmen="no"/></link></absatz>\n\n<absatz><link ziel="http://www.addcraft.com/"\nzielfenster="_blank"><bild\nname="logo_addcraft.gif" rahmen="no"/></link></absatz>\n\n<absatz><link ziel="http://www.comendo.com/"\nzielfenster="_blank"><bild\nname="logo_comendo.gif" rahmen="no"/></link></absatz>\n\n</inhalt>\n</seite>
+     \J1024<!DOCTYPE seite SYSTEM "http://www.lco.lineas.de/xmlCms.dtd">\n<seite>\n<dokumenteninformation>\n<seitentitel>Partner der LCO</seitentitel>\n<sprache>de</sprache>\n<seitenbeschreibung>Partner der LINEAS Consulting\nGmbH</seitenbeschreibung>\n<schluesselworte>LINEAS Consulting GmbH Hamburg\nPartnerfirmen</schluesselworte>\n<revisit>30 days</revisit>\n<robots>index,follow</robots>\n<menueinformation>\n<aktiv>ja</aktiv>\n<menueposition>3</menueposition>\n<menuetext>Partner</menuetext>\n</menueinformation>\n<lastedited>\n<autor>LCO</autor>\n<firma>LINEAS Consulting</firma>\n<datum>15.10.2003</datum>\n</lastedited>\n</dokumenteninformation>\n<inhalt>\n\n<absatzueberschrift>Die Partnerfirmen der LINEAS Consulting\nGmbH</absatzueberschrift>\n\n<absatz><link ziel="http://www.ca.com/" zielfenster="_blank">\n<bild name="logo_ca.gif" rahmen="no"/></link> <link\nziel="http://www.ey.com/" zielfenster="_blank"><bild\nname="logo_euy.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><link ziel="http://www.cisco.de/" zielfenster="_blank">\n<bild name="logo_cisco.gif" rahmen="ja"/></link></absatz>\n\n<absatz><link ziel="http://www.atelion.de/"\nzielfenster="_blank"><bild\nname="logo_atelion.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><link ziel="http://www.line-information.de/"\nzielfenster="_blank">\n<bild name="logo_line_information.gif" rahmen="no"/></link>\n</absatz>\n\n<absatz><bild name="logo_aw.gif" rahmen="no"/></absatz>\n\n<absatz><link ziel="http://www.incognis.de/"\nzielfenster="_blank"><bild\nname="logo_incognis.gif" rahmen="no"/></link></absatz>\n\n<absatz><link ziel="http://www.addcraft.com/"\nzielfenster="_blank"><bild\nname="logo_addcraft.gif" rahmen="no"/></link></absatz>\n\n<absatz><link ziel="http://www.comendo.com/"\nzielfenster="_blank"><bild\nname="logo_comendo.gif" rahmen="no"/></link></absatz>\n\n</inhalt>\n</seite>
 : <seite>\x0a<dokumenteninformation>\x0a<seitentitel>Partner der LCO</seitentitel>\x0a<sprache>de</sprache>\x0a<seitenbeschreibung>Partner der LINEAS Consulting\x0aGmbH</seitenbeschreibung>\x0a<schluesselworte>LINEAS Consulting GmbH Hamburg\x0aPartnerfirmen</schluesselworte>\x0a<revisit>30 days</revisit>\x0a<robots>index,follow</robots>\x0a<menueinformation>\x0a<aktiv>ja</aktiv>\x0a<menueposition>3</menueposition>\x0a<menuetext>Partner</menuetext>\x0a</menueinformation>\x0a<lastedited>\x0a<autor>LCO</autor>\x0a<firma>LINEAS Consulting</firma>\x0a<datum>15.10.2003</datum>\x0a</lastedited>\x0a</dokumenteninformation>\x0a<inhalt>\x0a\x0a<absatzueberschrift>Die Partnerfirmen der LINEAS Consulting\x0aGmbH</absatzueberschrift>\x0a\x0a<absatz><link ziel="http://www.ca.com/" zielfenster="_blank">\x0a<bild name="logo_ca.gif" rahmen="no"/></link> <link\x0aziel="http://www.ey.com/" zielfenster="_blank"><bild\x0aname="logo_euy.gif" rahmen="no"/></link>\x0a</absatz>\x0a\x0a<absatz><link ziel="http://www.cisco.de/" zielfenster="_blank">\x0a<bild name="logo_cisco.gif" rahmen="ja"/></link></absatz>\x0a\x0a<absatz><link ziel="http://www.atelion.de/"\x0azielfenster="_blank"><bild\x0aname="logo_atelion.gif" rahmen="no"/></link>\x0a</absatz>\x0a\x0a<absatz><link ziel="http://www.line-information.de/"\x0azielfenster="_blank">\x0a<bild name="logo_line_information.gif" rahmen="no"/></link>\x0a</absatz>\x0a\x0a<absatz><bild name="logo_aw.gif" rahmen="no"/></absatz>\x0a\x0a<absatz><link ziel="http://www.incognis.de/"\x0azielfenster="_blank"><bild\x0aname="logo_incognis.gif" rahmen="no"/></link></absatz>\x0a\x0a<absatz><link ziel="http://www.addcraft.com/"\x0azielfenster="_blank"><bild\x0aname="logo_addcraft.gif" rahmen="no"/></link></absatz>\x0a\x0a<absatz><link ziel="http://www.comendo.com/"\x0azielfenster="_blank"><bild\x0aname="logo_comendo.gif" rahmen="no"/></link></absatz>\x0a\x0a</inhalt>\x0a</seite>
 : seite
 : \x0a
-Line 6189 
 Capturing subpattern count = 0
+Line 6493 
 Capturing subpattern count = 0
  No options
  No first char
  Need char = ','
+ Subject length lower bound = 1
  Starting byte set: \x09 \x0a \x0c \x0d \x20 ,
      \x0b,\x0b
 : ,
-Line 6361 
 No first char
+Line 6666 
 No first char
  No need char
     /* this is a C style comment */\M
  Minimum match() limit = 120
- Minimum match() recursion limit = 6
+ Minimum match() recursion limit = 35
 : /* this is a C style comment */
 : /* this is a C style comment */
-Line 6493 
 Capturing subpattern count = 1
+Line 6798 
 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
  /()[ab]xyz/IS
-Line 6500 
 Capturing subpattern count = 1
+Line 6806 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'z'
+ Subject length lower bound = 4
  Starting byte set: a b
  /(|)[ab]xyz/IS
-Line 6507 
 Capturing subpattern count = 1
+Line 6814 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'z'
+ Subject length lower bound = 4
  Starting byte set: a b
  /(|c)[ab]xyz/IS
-Line 6514 
 Capturing subpattern count = 1
+Line 6822 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'z'
+ Subject length lower bound = 4
  Starting byte set: a b c
  /(|c?)[ab]xyz/IS
-Line 6521 
 Capturing subpattern count = 1
+Line 6830 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'z'
+ Subject length lower bound = 4
  Starting byte set: a b c
  /(d?|c?)[ab]xyz/IS
-Line 6528 
 Capturing subpattern count = 1
+Line 6838 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'z'
+ Subject length lower bound = 4
  Starting byte set: a b c d
  /(d?|c)[ab]xyz/IS
-Line 6535 
 Capturing subpattern count = 1
+Line 6846 
 Capturing subpattern count = 1
  No options
  No first char
  Need char = 'z'
+ Subject length lower bound = 4
  Starting byte set: a b c d
  /^a*b\d/DZ
-Line 6607 
 No match
+Line 6919 
 No match
  ------------------------------------------------------------------
          Bra
          ^
-         a*
+      /i a*
-      NC A
+      /i A
          \d
          Ket
          End
-Line 6627 
 Capturing subpattern count = 1
+Line 6939 
 Capturing subpattern count = 1
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b c d
  /(a+|b*)[cd]/IS
-Line 6634 
 Capturing subpattern count = 1
+Line 6947 
 Capturing subpattern count = 1
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b c d
  /(a*|b+)[cd]/IS
-Line 6641 
 Capturing subpattern count = 1
+Line 6955 
 Capturing subpattern count = 1
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b c d
  /(a+|b+)[cd]/IS
-Line 6648 
 Capturing subpattern count = 1
+Line 6963 
 Capturing subpattern count = 1
  No options
  No first char
  No need char
+ Subject length lower bound = 2
  Starting byte set: a b
  /((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((
-Line 7232 
 Matched, but too many substrings
+Line 7548 
 Matched, but too many substrings
  /[^a]+a/BZi
  ------------------------------------------------------------------
          Bra
-         [^A]++
+      /i [^A]++
-      NC a
+      /i a
          Ket
          End
  ------------------------------------------------------------------
-Line 7241 
 Matched, but too many substrings
+Line 7557 
 Matched, but too many substrings
  /[^a]+A/BZi
  ------------------------------------------------------------------
          Bra
-         [^A]++
+      /i [^A]++
-      NC A
+      /i A
          Ket
          End
  ------------------------------------------------------------------
-Line 7437 
 No match
+Line 7753 
 No match
  ------------------------------------------------------------------
          Bra
          ^
-         Once
          Recurse
-         Ket
          [()]
          CBra 1
          Ket
-Line 7453 
 No match
+Line 7767 
 No match
          ^
          CBra 1
          Cond
-Cond ref
+Cond nref
          y
          Ket
          [()]
-Line 7473 
 No match
+Line 7787 
 No match
  ------------------------------------------------------------------
          Bra
          ^
-         Once
          Recurse
-         Ket
          ()
          CBra 1
          Ket
-Line 7487 
 No match
+Line 7799 
 No match
  ------------------------------------------------------------------
          Bra
          ^
-         Once
          Recurse
-         Ket
          [(\]a]
          CBra 1
          Ket
-Line 7502 
 No match
+Line 7812 
 No match
  ------------------------------------------------------------------
          Bra
          ^
-         Once
          Recurse
-         Ket
          CBra 1
          Ket
          Ket
-Line 7636 
 Options: extended
+Line 7944 
 Options: extended
  First char = 'x'
  Need char = 'z'
- /(?(DEFINE) abc){3} xyz/x
- Failed: repeating a DEFINE group is not allowed at offset 17
  /(a|)*\d/
    \O0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  No match
-Line 7956 
 No match
+Line 8261 
 No match
          Alt
          c
          Ket
-         Once
          Recurse
          Ket
-         Ket
          End
  ------------------------------------------------------------------
      abc
-Line 7970 
 No match
+Line 8273 
 No match
  ------------------------------------------------------------------
          Bra
          xy
-         Once
          Recurse
-         Ket
          CBra 1
          abc
          Ket
-Line 8453 
 No match
+Line 8754 
 No match
  ------------------------------------------------------------------
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  /[\E]AAA/
-Line 8626 
 No match
+Line 8927 
 No match
  +13   ^  ^      (*FAIL)
  No match
- /a(*PRUNE:XXX)b/
- Failed: (*VERB) with an argument is not supported at offset 8
  /a(*MARK)b/
- Failed: (*VERB) not recognized at offset 7
+ Failed: (*MARK) must have an argument at offset 7
  /(?i:A{1,}\6666666666)/
  Failed: number is too big at offset 19
-Line 8638 
 Failed: number is too big at offset 19
+Line 8936 
 Failed: number is too big at offset 19
  /\g6666666666/
  Failed: number is too big at offset 11
- /[\g6666666666]/
+ /[\g6666666666]/BZ
- Failed: number is too big at offset 12
+ ------------------------------------------------------------------
+         Bra
+         [6g]
+         Ket
+         End
+ ------------------------------------------------------------------
  /(?1)\c[/
  Failed: reference to non-existent subpattern at offset 3
-Line 8719 
 No match
+Line 9022 
 No match
  No match
      a\x85b
  No match
+ /(*ANY).*/g
+     abc\r\ndef
+: abc
+:
+: def
+:
+ /(*ANYCRLF).*/g
+     abc\r\ndef
+: abc
+:
+: def
+:
+ /(*CRLF).*/g
+     abc\r\ndef
+: abc
+:
+: def
+:
  /a\Rb/I<bsr_anycrlf>
  Capturing subpattern count = 0
-Line 8924 
 Failed: subpattern name expected at offs
+Line 9248 
 Failed: subpattern name expected at offs
  /\k{}/
  Failed: subpattern name expected at offset 3
+ /\k/
+ Failed: \k is not followed by a braced, angle-bracketed, or quoted name at offset 2
+ /\kabc/
+ Failed: \k is not followed by a braced, angle-bracketed, or quoted name at offset 5
  /(?P=)/
  Failed: subpattern name expected at offset 4
-Line 9091 
 Capturing subpattern count = 1
+Line 9421 
 Capturing subpattern count = 1
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: x y z
  /(?(?=.*b)b|^)/CI
-Line 9204 
 No match
+Line 9535 
 No match
   +0        ^     x
   +0         ^    x
  No match
+ /(*NO_START_OPT)xyz/C
+   abcxyz
+ --->abcxyz
+ +15 ^          x
+ +15  ^         x
+ +15   ^        x
+ +15    ^       x
+ +16    ^^      y
+ +17    ^ ^     z
+ +18    ^  ^
+: xyz
+ /xyz/CY
+   abcxyz
+ --->abcxyz
+  +0 ^          x
+  +0  ^         x
+  +0   ^        x
+  +0    ^       x
+  +1    ^^      y
+  +2    ^ ^     z
+  +3    ^  ^
+: xyz
  /^"((?(?=[a])[^"])|b)*"$/C
      "ab"
-Line 9557 
 Partial match: +ab
+Line 9912 
 Partial match: +ab
  /(?&word)(?&element)(?(DEFINE)(?<element><[^m][^>]>[^<])(?<word>\w*+))/BZ
  ------------------------------------------------------------------
          Bra
-         Once
          Recurse
-         Ket
-         Once
          Recurse
-         Ket
          Cond
          Cond def
          CBra 1
-Line 9583 
 Partial match: +ab
+Line 9934 
 Partial match: +ab
  /(?&word)(?&element)(?(DEFINE)(?<element><[^\d][^>]>[^<])(?<word>\w*+))/BZ
  ------------------------------------------------------------------
          Bra
-         Once
          Recurse
-         Ket
-         Once
          Recurse
-         Ket
          Cond
          Cond def
          CBra 1
-Line 9834 
 No match
+Line 10181 
 No match
 : d
 : Y
- / End of testinput2 /
+ /(?<=b(?1)|zzz)(a)/
+     xbaax
+: a
+: a
+     xzzzax
+: a
+: a
+ /(a)(?<=b\1)/
+ Failed: lookbehind assertion is not fixed length at offset 10
+ /(a)(?<=b+(?1))/
+ Failed: lookbehind assertion is not fixed length at offset 13
+ /(a+)(?<=b(?1))/
+ Failed: lookbehind assertion is not fixed length at offset 14
+ /(a(?<=b(?1)))/
+ Failed: lookbehind assertion is not fixed length at offset 13
+ /(?<=b(?1))xyz/
+ Failed: reference to non-existent subpattern at offset 8
+ /(?<=b(?1))xyz(b+)pqrstuvew/
+ Failed: lookbehind assertion is not fixed length at offset 26
+ /(a|bc)\1/SI
+ Capturing subpattern count = 1
+ Max back reference = 1
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 2
+ Starting byte set: a b
+ /(a|bc)\1{2,3}/SI
+ Capturing subpattern count = 1
+ Max back reference = 1
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 3
+ Starting byte set: a b
+ /(a|bc)(?1)/SI
+ Capturing subpattern count = 1
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 2
+ Starting byte set: a b
+ /(a|b\1)(a|b\1)/SI
+ Capturing subpattern count = 2
+ Max back reference = 1
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 2
+ Starting byte set: a b
+ /(a|b\1){2}/SI
+ Capturing subpattern count = 1
+ Max back reference = 1
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 2
+ Starting byte set: a b
+ /(a|bbbb\1)(a|bbbb\1)/SI
+ Capturing subpattern count = 2
+ Max back reference = 1
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 2
+ Starting byte set: a b
+ /(a|bbbb\1){2}/SI
+ Capturing subpattern count = 1
+ Max back reference = 1
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 2
+ Starting byte set: a b
+ /^From +([^ ]+) +[a-zA-Z][a-zA-Z][a-zA-Z] +[a-zA-Z][a-zA-Z][a-zA-Z] +[0-9]?[0-9] +[0-9][0-9]:[0-9][0-9]/SI
+ Capturing subpattern count = 1
+ Options: anchored
+ No first char
+ Need char = ':'
+ Subject length lower bound = 22
+ No set of starting bytes
+ /  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*                          # optional leading comment
+ (?:    (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |
+ " (?:                      # opening quote...
+ [^\\\x80-\xff\n\015"]                #   Anything except backslash and quote
+ |                     #    or
+ \\ [^\x80-\xff]           #   Escaped something (something != CR)
+ )* "  # closing quote
+ )                    # initial word
+ (?:  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  \.  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*   (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |
+ " (?:                      # opening quote...
+ [^\\\x80-\xff\n\015"]                #   Anything except backslash and quote
+ |                     #    or
+ \\ [^\x80-\xff]           #   Escaped something (something != CR)
+ )* "  # closing quote
+ )  )* # further okay, if led by a period
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  @  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*    (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                           # initial subdomain
+ (?:                                  #
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  \.                        # if led by a period...
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*   (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                     #   ...further okay
+ )*
+ # address
+ |                     #  or
+ (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |
+ " (?:                      # opening quote...
+ [^\\\x80-\xff\n\015"]                #   Anything except backslash and quote
+ |                     #    or
+ \\ [^\x80-\xff]           #   Escaped something (something != CR)
+ )* "  # closing quote
+ )             # one word, optionally followed by....
+ (?:
+ [^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037]  |  # atom and space parts, or...
+ \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)       |  # comments, or...
+ " (?:                      # opening quote...
+ [^\\\x80-\xff\n\015"]                #   Anything except backslash and quote
+ |                     #    or
+ \\ [^\x80-\xff]           #   Escaped something (something != CR)
+ )* "  # closing quote
+ # quoted strings
+ )*
+ <  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*                     # leading <
+ (?:  @  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*    (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                           # initial subdomain
+ (?:                                  #
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  \.                        # if led by a period...
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*   (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                     #   ...further okay
+ )*
+ (?:  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  ,  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  @  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*    (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                           # initial subdomain
+ (?:                                  #
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  \.                        # if led by a period...
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*   (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                     #   ...further okay
+ )*
+ )* # further okay, if led by comma
+ :                                # closing colon
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  )? #       optional route
+ (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |
+ " (?:                      # opening quote...
+ [^\\\x80-\xff\n\015"]                #   Anything except backslash and quote
+ |                     #    or
+ \\ [^\x80-\xff]           #   Escaped something (something != CR)
+ )* "  # closing quote
+ )                    # initial word
+ (?:  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  \.  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*   (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |
+ " (?:                      # opening quote...
+ [^\\\x80-\xff\n\015"]                #   Anything except backslash and quote
+ |                     #    or
+ \\ [^\x80-\xff]           #   Escaped something (something != CR)
+ )* "  # closing quote
+ )  )* # further okay, if led by a period
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  @  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*    (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                           # initial subdomain
+ (?:                                  #
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  \.                        # if led by a period...
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*   (?:
+ [^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+    # some number of atom characters...
+ (?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]) # ..not followed by something that could be part of an atom
+ |   \[                         # [
+ (?: [^\\\x80-\xff\n\015\[\]] |  \\ [^\x80-\xff]  )*    #    stuff
+ \]                        #           ]
+ )                     #   ...further okay
+ )*
+ #       address spec
+ (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*  > #                  trailing >
+ # name and address
+ )  (?: [\040\t] |  \(
+ (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  |  \( (?:  [^\\\x80-\xff\n\015()]  |  \\ [^\x80-\xff]  )* \)  )*
+ \)  )*                       # optional trailing comment
+ /xSI
+ Capturing subpattern count = 0
+ Contains explicit CR or LF match
+ Options: extended
+ No first char
+ No need char
+ Subject length lower bound = 3
+ Starting byte set: \x09 \x20 ! " # $ % & ' ( * + - / 0 1 2 3 4 5 6 7 8
+= ? 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 { | } ~ \x7f
+ /<tr([\w\W\s\d][^<>]{0,})><TD([\w\W\s\d][^<>]{0,})>([\d]{0,}\.)(.*)((<BR>([\w\W\s\d][^<>]{0,})|[\s]{0,}))<\/a><\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><TD([\w\W\s\d][^<>]{0,})>([\w\W\s\d][^<>]{0,})<\/TD><\/TR>/isIS
+ Capturing subpattern count = 11
+ Options: caseless dotall
+ First char = '<'
+ Need char = '>'
+ Subject length lower bound = 47
+ No set of starting bytes
+ "(?>.*/)foo"SI
+ Capturing subpattern count = 0
+ No options
+ First char at start or follows newline
+ Need char = 'o'
+ Subject length lower bound = 4
+ No set of starting bytes
+ /(?(?=[^a-z]+[a-z])  \d{2}-[a-z]{3}-\d{2}  |  \d{2}-\d{2}-\d{2} ) /xSI
+ Capturing subpattern count = 0
+ Options: extended
+ No first char
+ Need char = '-'
+ Subject length lower bound = 8
+ No set of starting bytes
+ /(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/iSI
+ Capturing subpattern count = 1
+ Options: caseless
+ No first char
+ No need char
+ Subject length lower bound = 1
+ Starting byte set: A B C a b c
+ /(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/SI
+ Capturing subpattern count = 0
+ No options
+ No first char
+ Need char = 'b'
+ Subject length lower bound = 41
+ Starting byte set: c d
+ /<a[\s]+href[\s]*=[\s]*          # find <a href=
+  ([\"\'])?                       # find single or double quote
+  (?(1) (.*?)\1 | ([^\s]+))       # if quote found, match up to next matching
+                                  # quote, otherwise match up to next space
+ /isxSI
+ Capturing subpattern count = 3
+ Max back reference = 1
+ Options: caseless extended dotall
+ First char = '<'
+ Need char = '='
+ Subject length lower bound = 9
+ No set of starting bytes
+ /^(?!:)                       # colon disallowed at start
+   (?:                         # start of item
+     (?: [0-9a-f]{1,4} |       # 1-4 hex digits or
+     (?(1)0 | () ) )           # if null previously matched, fail; else null
+     :                         # followed by colon
+   ){1,7}                      # end item; 1-7 of them required
+   [0-9a-f]{1,4} $             # final hex number at end of string
+   (?(1)|.)                    # check that there was an empty component
+   /xiIS
+ Capturing subpattern count = 1
+ Options: anchored caseless extended
+ No first char
+ Need char = ':'
+ Subject length lower bound = 2
+ No set of starting bytes
+ /(?|(?<a>A)|(?<a>B))/I
+ Capturing subpattern count = 1
+ Named capturing subpatterns:
+   a   1
+   a   1
+ No options
+ No first char
+ No need char
+     AB\Ca
+: A
+: A
+   C A (1) a
+     BA\Ca
+: B
+: B
+   C B (1) a
+ /(?|(?<a>A)|(?<b>B))/
+ Failed: different names for subpatterns of the same number are not allowed at offset 15
+ /(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |
+     b(?<quote> (?<apostrophe>')|(?<realquote>")) )
+     (?('quote')[a-z]+|[0-9]+)/JIx
+ Capturing subpattern count = 6
+ Named capturing subpatterns:
+   apostrophe   2
+   apostrophe   5
+   quote        1
+   quote        4
+   realquote    3
+   realquote    6
+ Options: extended dupnames
+ No first char
+ No need char
+     a"aaaaa
+: a"aaaaa
+: "
+: <unset>
+: "
+     b"aaaaa
+: b"aaaaa
+: <unset>
+: <unset>
+: <unset>
+: "
+: <unset>
+: "
+     ** Failers
+ No match
+     b"11111
+ No match
+     a"11111
+ No match
+ /^(?|(a)(b)(c)(?<D>d)|(?<D>e)) (?('D')X|Y)/JDZx
+ ------------------------------------------------------------------
+         Bra
+         ^
+         Bra
+         CBra 1
+         a
+         Ket
+         CBra 2
+         b
+         Ket
+         CBra 3
+         c
+         Ket
+         CBra 4
+         d
+         Ket
+         Alt
+         CBra 1
+         e
+         Ket
+         Ket
+         Cond
+Cond nref
+         X
+         Alt
+         Y
+         Ket
+         Ket
+         End
+ ------------------------------------------------------------------
+ Capturing subpattern count = 4
+ Named capturing subpatterns:
+   D   4
+   D   1
+ Options: anchored extended dupnames
+ No first char
+ No need char
+     abcdX
+: abcdX
+: a
+: b
+: c
+: d
+     eX
+: eX
+: e
+     ** Failers
+ No match
+     abcdY
+ No match
+     ey
+ No match
+ /(?<A>a) (b)(c)  (?<A>d  (?(R&A)$ | (?4)) )/JDZx
+ ------------------------------------------------------------------
+         Bra
+         CBra 1
+         a
+         Ket
+         CBra 2
+         b
+         Ket
+         CBra 3
+         c
+         Ket
+         CBra 4
+         d
+         Cond
+         Cond nrecurse 1
+         $
+         Alt
+         Recurse
+         Ket
+         Ket
+         Ket
+         End
+ ------------------------------------------------------------------
+ Capturing subpattern count = 4
+ Named capturing subpatterns:
+   A   1
+   A   4
+ Options: extended dupnames
+ First char = 'a'
+ Need char = 'd'
+     abcdd
+: abcdd
+: a
+: b
+: c
+: dd
+     ** Failers
+ No match
+     abcdde
+ No match
+ /abcd*/
+     xxxxabcd\P
+: abcd
+     xxxxabcd\P\P
+ Partial match: abcd
+ /abcd*/i
+     xxxxabcd\P
+: abcd
+     xxxxabcd\P\P
+ Partial match: abcd
+     XXXXABCD\P
+: ABCD
+     XXXXABCD\P\P
+ Partial match: ABCD
+ /abc\d*/
+     xxxxabc1\P
+: abc1
+     xxxxabc1\P\P
+ Partial match: abc1
+ /(a)bc\1*/
+     xxxxabca\P
+: abca
+: a
+     xxxxabca\P\P
+ Partial match: abca
+ /abc[de]*/
+     xxxxabcde\P
+: abcde
+     xxxxabcde\P\P
+ Partial match: abcde
+ /-- This is not in the Perl >= 5.10 test because Perl seems currently to be
+     broken and not behaving as specified in that it *does* bumpalong after
+     hitting (*COMMIT). --/
+ /(?1)(A(*COMMIT)|B)D/
+     ABD
+: ABD
+: B
+     XABD
+: ABD
+: B
+     BAD
+: BAD
+: A
+     ABXABD
+: ABD
+: B
+     ** Failers
+ No match
+     ABX
+ No match
+     BAXBAD
+ No match
+ /(\3)(\1)(a)/<JS>
+     cat
+: a
+:
+:
+: a
+ /(\3)(\1)(a)/SI<JS>
+ Capturing subpattern count = 3
+ Max back reference = 3
+ Options:
+ No first char
+ Need char = 'a'
+ Subject length lower bound = 1
+ No set of starting bytes
+     cat
+: a
+:
+:
+: a
+ /(\3)(\1)(a)/SI
+ Capturing subpattern count = 3
+ Max back reference = 3
+ No options
+ No first char
+ Need char = 'a'
+ Subject length lower bound = 3
+ No set of starting bytes
+     cat
+ No match
+ /i(?(DEFINE)(?<s>a))/SI
+ Capturing subpattern count = 1
+ Named capturing subpatterns:
+   s   1
+ No options
+ First char = 'i'
+ No need char
+ Subject length lower bound = 1
+ No set of starting bytes
+     i
+: i
+ /()i(?(1)a)/SI
+ Capturing subpattern count = 1
+ No options
+ No first char
+ Need char = 'i'
+ Subject length lower bound = 1
+ Starting byte set: i
+     ia
+: ia
+:
+ /(?i)a(?-i)b|c/BZ
+ ------------------------------------------------------------------
+         Bra
+      /i a
+         b
+         Alt
+         c
+         Ket
+         End
+ ------------------------------------------------------------------
+     XabX
+: ab
+     XAbX
+: Ab
+     CcC
+: c
+     ** Failers
+ No match
+     XABX
+ No match
+ /(?i)a(?s)b|c/BZ
+ ------------------------------------------------------------------
+         Bra
+      /i ab
+         Alt
+      /i c
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?i)a(?s-i)b|c/BZ
+ ------------------------------------------------------------------
+         Bra
+      /i a
+         b
+         Alt
+         c
+         Ket
+         End
+ ------------------------------------------------------------------
+ /^(ab(c\1)d|x){2}$/BZ
+ ------------------------------------------------------------------
+         Bra
+         ^
+         Once
+         CBra 1
+         ab
+         CBra 2
+         c
+         \1
+         Ket
+         d
+         Alt
+         x
+         Ket
+         Ket
+         Once
+         CBra 1
+         ab
+         CBra 2
+         c
+         \1
+         Ket
+         d
+         Alt
+         x
+         Ket
+         Ket
+         $
+         Ket
+         End
+ ------------------------------------------------------------------
+     xabcxd
+: xabcxd
+: abcxd
+: cx
+ /^(?&t)*+(?(DEFINE)(?<t>.))$/BZ
+ ------------------------------------------------------------------
+         Bra
+         ^
+         Braposzero
+         SBraPos
+         Recurse
+         KetRpos
+         Cond
+         Cond def
+         CBra 1
+         Any
+         Ket
+         Ket
+         $
+         Ket
+         End
+ ------------------------------------------------------------------
+ /^(?&t)*(?(DEFINE)(?<t>.))$/BZ
+ ------------------------------------------------------------------
+         Bra
+         ^
+         Brazero
+         Once
+         Recurse
+         KetRmax
+         Cond
+         Cond def
+         CBra 1
+         Any
+         Ket
+         Ket
+         $
+         Ket
+         End
+ ------------------------------------------------------------------
+ / -- The first four of these are not in the Perl >= 5.10 test because Perl
+      documents that the use of \K in assertions is "not well defined". The
+      last is here because Perl gives the match as "b" rather than "ab". I
+      believe this to be a Perl bug. --/
+ /(?=a\Kb)ab/
+     ab
+: b
+ /(?!a\Kb)ac/
+     ac
+: ac
+ /^abc(?<=b\Kc)d/
+     abcd
+: cd
+ /^abc(?<!b\Kq)d/
+     abcd
+: abcd
+ /(?>a\Kb)z|(ab)/
+     ab
+: ab
+: ab
+ /----------------------/
+ /(?P<L1>(?P<L2>0|)|(?P>L2)(?P>L1))/
+ Failed: recursive call could loop indefinitely at offset 31
+ /abc(*MARK:)pqr/
+ Failed: (*MARK) must have an argument at offset 10
+ /abc(*:)pqr/
+ Failed: (*MARK) must have an argument at offset 6
+ /abc(*FAIL:123)xyz/
+ Failed: an argument is not allowed for (*ACCEPT), (*FAIL), or (*COMMIT) at offset 13
+ /--- This should, and does, fail. In Perl, it does not, which I think is a
+      bug because replacing the B in the pattern by (B|D) does make it fail. ---/
+ /A(*COMMIT)B/+K
+     ACABX
+ No match
+ /--- These should be different, but in Perl 5.11 are not, which I think
+      is a bug in Perl. ---/
+ /A(*THEN)B|A(*THEN)C/K
+     AC
+: AC
+ /A(*PRUNE)B|A(*PRUNE)C/K
+     AC
+ No match
+ /--- A whole lot of tests of verbs with arguments are here rather than in test
+because Perl doesn't seem to follow its specification entirely
+      correctly. ---/
+ /--- Perl 5.11 sets $REGERROR on the AC failure case here; PCRE does not. It is
+      not clear how Perl defines "involved in the failure of the match". ---/
+ /^(A(*THEN:A)B|C(*THEN:B)D)/K
+     AB
+: AB
+: AB
+     CD
+: CD
+: CD
+     ** Failers
+ No match
+     AC
+ No match
+     CB
+ No match, mark = B
+ /--- Check the use of names for success and failure. PCRE doesn't show these
+ names for success, though Perl does, contrary to its spec. ---/
+ /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/K
+     AB
+: AB
+: AB
+     CD
+: CD
+: CD
+     ** Failers
+ No match
+     AC
+ No match, mark = A
+     CB
+ No match, mark = B
+ /--- An empty name does not pass back an empty string. It is the same as if no
+ name were given. ---/
+ /^(A(*PRUNE:)B|C(*PRUNE:B)D)/K
+     AB
+: AB
+: AB
+     CD
+: CD
+: CD
+ /--- PRUNE goes to next bumpalong; COMMIT does not. ---/
+ /A(*PRUNE:A)B/K
+     ACAB
+: AB
+ /(*MARK:A)(*PRUNE:B)(C|X)/KS
+     C
+: C
+: C
+ MK: A
+     D
+ No match
+ /(*MARK:A)(*PRUNE:B)(C|X)/KSS
+     C
+: C
+: C
+ MK: A
+     D
+ No match, mark = B
+ /(*MARK:A)(*THEN:B)(C|X)/KS
+     C
+: C
+: C
+ MK: A
+     D
+ No match
+ /(*MARK:A)(*THEN:B)(C|X)/KSS
+     C
+: C
+: C
+ MK: A
+     D
+ No match, mark = B
+ /--- This should fail, as the skip causes a bump to offset 3 (the skip) ---/
+ /A(*MARK:A)A+(*SKIP)(B|Z) | AC/xK
+     AAAC
+ No match
+ /--- Same --/
+ /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/xK
+     AAAC
+ No match
+ /--- This should fail; the SKIP advances by one, but when we get to AC, the
+      PRUNE kills it. ---/
+ /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/xK
+     AAAC
+ No match
+ /A(*:A)A+(*SKIP)(B|Z) | AC/xK
+     AAAC
+ No match
+ /--- This should fail, as a null name is the same as no name ---/
+ /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/xK
+     AAAC
+ No match
+ /--- This fails in PCRE, and I think that is in accordance with Perl's
+      documentation, though in Perl it succeeds. ---/
+ /A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/xK
+     AAAC
+ No match
+ /--- Mark names can be duplicated ---/
+ /A(*:A)B|X(*:A)Y/K
+     AABC
+: AB
+ MK: A
+     XXYZ
+: XY
+ MK: A
+ /^A(*:A)B|^X(*:A)Y/K
+     ** Failers
+ No match
+     XAQQ
+ No match, mark = A
+ /--- A check on what happens after hitting a mark and them bumping along to
+ something that does not even start. Perl reports tags after the failures here,
+ though it does not when the individual letters are made into something
+ more complicated. ---/
+ /A(*:A)B|XX(*:B)Y/K
+     AABC
+: AB
+ MK: A
+     XXYZ
+: XXY
+ MK: B
+     ** Failers
+ No match
+     XAQQ
+ No match
+     XAQQXZZ
+ No match
+     AXQQQ
+ No match
+     AXXQQQ
+ No match
+ /--- COMMIT at the start of a pattern should be the same as an anchor. Perl
+ optimizations defeat this. So does the PCRE optimization unless we disable it
+ with \Y. ---/
+ /(*COMMIT)ABC/
+     ABCDEFG
+: ABC
+     ** Failers
+ No match
+     DEFGABC\Y
+ No match
+ /--- Repeat some tests with added studying. ---/
+ /A(*COMMIT)B/+KS
+     ACABX
+ No match
+ /A(*THEN)B|A(*THEN)C/KS
+     AC
+: AC
+ /A(*PRUNE)B|A(*PRUNE)C/KS
+     AC
+ No match
+ /^(A(*THEN:A)B|C(*THEN:B)D)/KS
+     AB
+: AB
+: AB
+     CD
+: CD
+: CD
+     ** Failers
+ No match
+     AC
+ No match
+     CB
+ No match, mark = B
+ /^(A(*PRUNE:A)B|C(*PRUNE:B)D)/KS
+     AB
+: AB
+: AB
+     CD
+: CD
+: CD
+     ** Failers
+ No match
+     AC
+ No match, mark = A
+     CB
+ No match, mark = B
+ /^(A(*PRUNE:)B|C(*PRUNE:B)D)/KS
+     AB
+: AB
+: AB
+     CD
+: CD
+: CD
+ /A(*PRUNE:A)B/KS
+     ACAB
+: AB
+ /(*MARK:A)(*PRUNE:B)(C|X)/KS
+     C
+: C
+: C
+ MK: A
+     D
+ No match
+ /(*MARK:A)(*THEN:B)(C|X)/KS
+     C
+: C
+: C
+ MK: A
+     D
+ No match
+ /A(*MARK:A)A+(*SKIP)(B|Z) | AC/xKS
+     AAAC
+ No match
+ /A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/xKS
+     AAAC
+ No match
+ /A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/xKS
+     AAAC
+ No match
+ /A(*:A)A+(*SKIP)(B|Z) | AC/xKS
+     AAAC
+ No match
+ /A(*MARK:A)A+(*SKIP:)(B|Z) | AC/xKS
+     AAAC
+ No match
+ /A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/xKS
+     AAAC
+ No match
+ /A(*:A)B|XX(*:B)Y/KS
+     AABC
+: AB
+ MK: A
+     XXYZ
+: XXY
+ MK: B
+     ** Failers
+ No match
+     XAQQ
+ No match
+     XAQQXZZ
+ No match
+     AXQQQ
+ No match
+     AXXQQQ
+ No match
+ /(*COMMIT)ABC/
+     ABCDEFG
+: ABC
+     ** Failers
+ No match
+     DEFGABC\Y
+ No match
+ /^(ab (c+(*THEN)cd) | xyz)/x
+     abcccd
+ No match
+ /^(ab (c+(*PRUNE)cd) | xyz)/x
+     abcccd
+ No match
+ /^(ab (c+(*FAIL)cd) | xyz)/x
+     abcccd
+ No match
+ /--- Perl 5.11 gets some of these wrong ---/
+ /(?>.(*ACCEPT))*?5/
+     abcde
+: a
+ /(.(*ACCEPT))*?5/
+     abcde
+: a
+: a
+ /(.(*ACCEPT))5/
+     abcde
+: a
+: a
+ /(.(*ACCEPT))*5/
+     abcde
+: a
+: a
+ /A\NB./BZ
+ ------------------------------------------------------------------
+         Bra
+         A
+         Any
+         B
+         Any
+         Ket
+         End
+ ------------------------------------------------------------------
+     ACBD
+: ACBD
+     *** Failers
+ No match
+     A\nB
+ No match
+     ACB\n
+ No match
+ /A\NB./sBZ
+ ------------------------------------------------------------------
+         Bra
+         A
+         Any
+         B
+         AllAny
+         Ket
+         End
+ ------------------------------------------------------------------
+     ACBD
+: ACBD
+     ACB\n
+: ACB\x0a
+     *** Failers
+ No match
+     A\nB
+ No match
+ /A\NB/<crlf>
+     A\nB
+: A\x0aB
+     A\rB
+: A\x0dB
+     ** Failers
+ No match
+     A\r\nB
+ No match
+ /\R+b/BZ
+ ------------------------------------------------------------------
+         Bra
+         \R++
+         b
+         Ket
+         End
+ ------------------------------------------------------------------
+ /\R+\n/BZ
+ ------------------------------------------------------------------
+         Bra
+         \R+
+         \x0a
+         Ket
+         End
+ ------------------------------------------------------------------
+ /\R+\d/BZ
+ ------------------------------------------------------------------
+         Bra
+         \R++
+         \d
+         Ket
+         End
+ ------------------------------------------------------------------
+ /\d*\R/BZ
+ ------------------------------------------------------------------
+         Bra
+         \d*+
+         \R
+         Ket
+         End
+ ------------------------------------------------------------------
+ /\s*\R/BZ
+ ------------------------------------------------------------------
+         Bra
+         \s*+
+         \R
+         Ket
+         End
+ ------------------------------------------------------------------
+ /-- Perl treats this one differently, not failing the second string. I believe
+     that is a bug in Perl. --/
+ /^((abc|abcx)(*THEN)y|abcd)/
+     abcd
+: abcd
+: abcd
+     *** Failers
+ No match
+     abcxy
+ No match
+ /(?<=abc)def/
+     abc\P\P
+ Partial match: abc
+ /abc$/
+     abc
+: abc
+     abc\P
+: abc
+     abc\P\P
+ Partial match: abc
+ /abc$/m
+     abc
+: abc
+     abc\n
+: abc
+     abc\P\P
+ Partial match: abc
+     abc\n\P\P
+: abc
+     abc\P
+: abc
+     abc\n\P
+: abc
+ /abc\z/
+     abc
+: abc
+     abc\P
+: abc
+     abc\P\P
+ Partial match: abc
+ /abc\Z/
+     abc
+: abc
+     abc\P
+: abc
+     abc\P\P
+ Partial match: abc
+ /abc\b/
+     abc
+: abc
+     abc\P
+: abc
+     abc\P\P
+ Partial match: abc
+ /abc\B/
+     abc
+ No match
+     abc\P
+ Partial match: abc
+     abc\P\P
+ Partial match: abc
+ /.+/
+     abc\>0
+: abc
+     abc\>1
+: bc
+     abc\>2
+: c
+     abc\>3
+ No match
+     abc\>4
+ Error -24 (bad offset value)
+     abc\>-4
+ Error -24 (bad offset value)
+ /^\cģ/
+ Failed: \c must be followed by an ASCII character at offset 3
+ /(?P<abn>(?P=abn)xxx)/BZ
+ ------------------------------------------------------------------
+         Bra
+         Once
+         CBra 1
+         \1
+         xxx
+         Ket
+         Ket
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(a\1z)/BZ
+ ------------------------------------------------------------------
+         Bra
+         Once
+         CBra 1
+         a
+         \1
+         z
+         Ket
+         Ket
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?P<abn>(?P=abn)(?<badstufxxx)/BZ
+ Failed: syntax error in subpattern name (missing terminator) at offset 29
+ /(?P<abn>(?P=axn)xxx)/BZ
+ Failed: reference to non-existent subpattern at offset 15
+ /(?P<abn>(?P=axn)xxx)(?<axn>yy)/BZ
+ ------------------------------------------------------------------
+         Bra
+         CBra 1
+         \2
+         xxx
+         Ket
+         CBra 2
+         yy
+         Ket
+         Ket
+         End
+ ------------------------------------------------------------------
+ /-- These tests are here because Perl gets the first one wrong. --/
+ /(\R*)(.)/s
+     \r\n
+: \x0d
+:
+: \x0d
+     \r\r\n\n\r
+: \x0d\x0d\x0a\x0a\x0d
+: \x0d\x0d\x0a\x0a
+: \x0d
+     \r\r\n\n\r\n
+: \x0d\x0d\x0a\x0a\x0d
+: \x0d\x0d\x0a\x0a
+: \x0d
+ /(\R)*(.)/s
+     \r\n
+: \x0d
+: <unset>
+: \x0d
+     \r\r\n\n\r
+: \x0d\x0d\x0a\x0a\x0d
+: \x0a
+: \x0d
+     \r\r\n\n\r\n
+: \x0d\x0d\x0a\x0a\x0d
+: \x0a
+: \x0d
+ /((?>\r\n|\n|\x0b|\f|\r|\x85)*)(.)/s
+     \r\n
+: \x0d
+:
+: \x0d
+     \r\r\n\n\r
+: \x0d\x0d\x0a\x0a\x0d
+: \x0d\x0d\x0a\x0a
+: \x0d
+     \r\r\n\n\r\n
+: \x0d\x0d\x0a\x0a\x0d
+: \x0d\x0d\x0a\x0a
+: \x0d
+ /-- --/
+ /^abc$/BZ
+ ------------------------------------------------------------------
+         Bra
+         ^
+         abc
+         $
+         Ket
+         End
+ ------------------------------------------------------------------
+ /^abc$/BZm
+ ------------------------------------------------------------------
+         Bra
+      /m ^
+         abc
+      /m $
+         Ket
+         End
+ ------------------------------------------------------------------
+ /^(a)*+(\w)/S
+     aaaaX
+: aaaaX
+: a
+: X
+     ** Failers
+ No match
+     aaaa
+ No match
+ /^(?:a)*+(\w)/S
+     aaaaX
+: aaaaX
+: X
+     ** Failers
+ No match
+     aaaa
+ No match
+ /(a)++1234/SDZ
+ ------------------------------------------------------------------
+         Bra
+         CBraPos 1
+         a
+         KetRpos
+         Ket
+         End
+ ------------------------------------------------------------------
+ Capturing subpattern count = 1
+ No options
+ First char = 'a'
+ Need char = '4'
+ Subject length lower bound = 5
+ No set of starting bytes
+ /([abc])++1234/SI
+ Capturing subpattern count = 1
+ No options
+ No first char
+ Need char = '4'
+ Subject length lower bound = 5
+ Starting byte set: a b c
+ /(?<=(abc)+)X/
+ Failed: lookbehind assertion is not fixed length at offset 10
+ /(^ab)/I
+ Capturing subpattern count = 1
+ Options: anchored
+ No first char
+ No need char
+ /(^ab)++/I
+ Capturing subpattern count = 1
+ Options: anchored
+ No first char
+ No need char
+ /(^ab|^)+/I
+ Capturing subpattern count = 1
+ Options: anchored
+ No first char
+ No need char
+ /(^ab|^)++/I
+ Capturing subpattern count = 1
+ Options: anchored
+ No first char
+ No need char
+ /(?:^ab)/I
+ Capturing subpattern count = 0
+ Options: anchored
+ No first char
+ No need char
+ /(?:^ab)++/I
+ Capturing subpattern count = 0
+ Options: anchored
+ No first char
+ No need char
+ /(?:^ab|^)+/I
+ Capturing subpattern count = 0
+ Options: anchored
+ No first char
+ No need char
+ /(?:^ab|^)++/I
+ Capturing subpattern count = 0
+ Options: anchored
+ No first char
+ No need char
+ /(.*ab)/I
+ Capturing subpattern count = 1
+ No options
+ First char at start or follows newline
+ Need char = 'b'
+ /(.*ab)++/I
+ Capturing subpattern count = 1
+ No options
+ First char at start or follows newline
+ Need char = 'b'
+ /(.*ab|.*)+/I
+ Capturing subpattern count = 1
+ No options
+ First char at start or follows newline
+ No need char
+ /(.*ab|.*)++/I
+ Capturing subpattern count = 1
+ No options
+ First char at start or follows newline
+ No need char
+ /(?:.*ab)/I
+ Capturing subpattern count = 0
+ No options
+ First char at start or follows newline
+ Need char = 'b'
+ /(?:.*ab)++/I
+ Capturing subpattern count = 0
+ No options
+ First char at start or follows newline
+ Need char = 'b'
+ /(?:.*ab|.*)+/I
+ Capturing subpattern count = 0
+ No options
+ First char at start or follows newline
+ No need char
+ /(?:.*ab|.*)++/I
+ Capturing subpattern count = 0
+ No options
+ First char at start or follows newline
+ No need char
+ /(?=a)[bcd]/I
+ Capturing subpattern count = 0
+ No options
+ First char = 'a'
+ No need char
+ /((?=a))[bcd]/I
+ Capturing subpattern count = 1
+ No options
+ First char = 'a'
+ No need char
+ /((?=a))+[bcd]/I
+ Capturing subpattern count = 1
+ No options
+ First char = 'a'
+ No need char
+ /((?=a))++[bcd]/I
+ Capturing subpattern count = 1
+ No options
+ First char = 'a'
+ No need char
+ /(?=a+)[bcd]/iI
+ Capturing subpattern count = 0
+ Options: caseless
+ First char = 'a' (caseless)
+ No need char
+ /(?=a+?)[bcd]/iI
+ Capturing subpattern count = 0
+ Options: caseless
+ First char = 'a' (caseless)
+ No need char
+ /(?=a++)[bcd]/iI
+ Capturing subpattern count = 0
+ Options: caseless
+ First char = 'a' (caseless)
+ No need char
+ /(?=a{3})[bcd]/iI
+ Capturing subpattern count = 0
+ Options: caseless
+ First char = 'a' (caseless)
+ Need char = 'a' (caseless)
+ /(abc)\1+/S
+ /-- Perl doesn't get these right IMO (the 3rd is PCRE-specific) --/
+ /(?1)(?:(b(*ACCEPT))){0}/
+     b
+: b
+ /(?1)(?:(b(*ACCEPT))){0}c/
+     bc
+: bc
+     ** Failers
+ No match
+     b
+ No match
+ /(?1)(?:((*ACCEPT))){0}c/
+     c
+: c
+     c\N
+: c
+ /^.*?(?(?=a)a|b(*THEN)c)/
+     ba
+: ba
+ /^.*?(?(?=a)a|bc)/
+     ba
+: ba
+ /-- --/
+ /-- These studied versions are here because they are not Perl-compatible; the
+     studying means the mark is not seen. --/
+ /(*MARK:A)(*SKIP:B)(C|X)/KS
+     C
+: C
+: C
+ MK: A
+     D
+ No match
+ /(*:A)A+(*SKIP:A)(B|Z)/KS
+     AAAC
+ No match
+ /-- --/
+ "(?=a*(*ACCEPT)b)c"
+     c
+: c
+     c\N
+: c
+ /(?1)c(?(DEFINE)((*ACCEPT)b))/
+     c
+: c
+     c\N
+: c
+ /(?>(*ACCEPT)b)c/
+     c
+:
+     c\N
+ No match
+ /(?:(?>(a)))+a%/++
+     %aa%
+: aa%
++
+: a
++ a%
+ /(a)b|ac/++SS
+     ac\O3
+ Matched, but too many substrings
+: ac
++
+ /(a)(b)x|abc/++
+      abc\O6
+: abc
++
+ /(a)bc|(a)(b)\2/
+     \O3abc
+ Matched, but too many substrings
+: abc
+     \O4abc
+ Matched, but too many substrings
+: abc
+ /(?(DEFINE)(a(?2)|b)(b(?1)|a))(?:(?1)|(?2))/SI
+ Capturing subpattern count = 2
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 1
+ No set of starting bytes
+ /(a(?2)|b)(b(?1)|a)(?:(?1)|(?2))/SI
+ Capturing subpattern count = 2
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 3
+ Starting byte set: a b
+ /(a(?2)|b)(b(?1)|a)(?1)(?2)/SI
+ Capturing subpattern count = 2
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 4
+ Starting byte set: a b
+ /(abc)(?1)/SI
+ Capturing subpattern count = 1
+ No options
+ First char = 'a'
+ Need char = 'c'
+ Subject length lower bound = 6
+ No set of starting bytes
+ /^(?>a)++/
+     aa\M
+ Minimum match() limit = 5
+ Minimum match() recursion limit = 3
+: aa
+     aaaaaaaaa\M
+ Minimum match() limit = 12
+ Minimum match() recursion limit = 3
+: aaaaaaaaa
+ /(a)(?1)++/
+     aa\M
+ Minimum match() limit = 7
+ Minimum match() recursion limit = 5
+: aa
+: a
+     aaaaaaaaa\M
+ Minimum match() limit = 21
+ Minimum match() recursion limit = 5
+: aaaaaaaaa
+: a
+ /(?:(foo)|(bar)|(baz))X/SS=
+     bazfooX
+: fooX
+: foo
+: <unset>
+: <unset>
+     foobazbarX
+: barX
+: <unset>
+: bar
+: <unset>
+     barfooX
+: fooX
+: foo
+: <unset>
+: <unset>
+     bazX
+: bazX
+: <unset>
+: <unset>
+: baz
+     foobarbazX
+: bazX
+: <unset>
+: <unset>
+: baz
+     bazfooX\O0
+ Matched, but too many substrings
+     bazfooX\O2
+ Matched, but too many substrings
+: fooX
+     bazfooX\O4
+ Matched, but too many substrings
+: fooX
+: <unset>
+     bazfooX\O6
+ Matched, but too many substrings
+: fooX
+: foo
+: <unset>
+     bazfooX\O8
+ Matched, but too many substrings
+: fooX
+: foo
+: <unset>
+: <unset>
+     bazfooX\O10
+: fooX
+: foo
+: <unset>
+: <unset>
+ /(?=abc){3}abc/BZ
+ ------------------------------------------------------------------
+         Bra
+         Assert
+         abc
+         Ket
+         abc
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?=abc)+abc/BZ
+ ------------------------------------------------------------------
+         Bra
+         Assert
+         abc
+         Ket
+         abc
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?=abc)++abc/BZ
+ ------------------------------------------------------------------
+         Bra
+         Assert
+         abc
+         Ket
+         abc
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?=abc){0}xyz/BZ
+ ------------------------------------------------------------------
+         Bra
+         Skip zero
+         Assert
+         abc
+         Ket
+         xyz
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?=(a))?./BZ
+ ------------------------------------------------------------------
+         Bra
+         Brazero
+         Assert
+         CBra 1
+         a
+         Ket
+         Ket
+         Any
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?=(a))??./BZ
+ ------------------------------------------------------------------
+         Bra
+         Braminzero
+         Assert
+         CBra 1
+         a
+         Ket
+         Ket
+         Any
+         Ket
+         End
+ ------------------------------------------------------------------
+ /^(?=(a)){0}b(?1)/BZ
+ ------------------------------------------------------------------
+         Bra
+         ^
+         Skip zero
+         Assert
+         CBra 1
+         a
+         Ket
+         Ket
+         b
+         Recurse
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?(DEFINE)(a))?b(?1)/BZ
+ ------------------------------------------------------------------
+         Bra
+         Cond
+         Cond def
+         CBra 1
+         a
+         Ket
+         Ket
+         b
+         Recurse
+         Ket
+         End
+ ------------------------------------------------------------------
+ /^(?=(?1))?[az]([abc])d/BZ
+ ------------------------------------------------------------------
+         Bra
+         ^
+         Brazero
+         Assert
+         Recurse
+         Ket
+         [az]
+         CBra 1
+         [a-c]
+         Ket
+         d
+         Ket
+         End
+ ------------------------------------------------------------------
+ /^(?!a){0}\w+/BZ
+ ------------------------------------------------------------------
+         Bra
+         ^
+         Skip zero
+         Assert not
+         a
+         Ket
+         \w+
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?<=(abc))?xyz/BZ
+ ------------------------------------------------------------------
+         Bra
+         Brazero
+         AssertB
+         Reverse
+         CBra 1
+         abc
+         Ket
+         Ket
+         xyz
+         Ket
+         End
+ ------------------------------------------------------------------
+ /[:a[:abc]b:]/BZ
+ ------------------------------------------------------------------
+         Bra
+         [:[a-c]
+         b:]
+         Ket
+         End
+ ------------------------------------------------------------------
+ /((?2))((?1))/SS
+     abc
+ Error -26 (nested recursion at the same subject position)
+ /((?(R2)a+|(?1)b))/
+     aaaabcde
+ Error -26 (nested recursion at the same subject position)
+ /(?(R)a*(?1)|((?R))b)/
+     aaaabcde
+ Error -26 (nested recursion at the same subject position)
+ /(a+|(?R)b)/
+ Failed: recursive call could loop indefinitely at offset 7
+ /^(a(*:A)(d|e(*:B))z|aeq)/C
+     adz
+ --->adz
+  +0 ^       ^
+  +1 ^       (a(*:A)(d|e(*:B))z|aeq)
+  +2 ^       a
+  +3 ^^      (*:A)
+  +8 ^^      (d|e(*:B))
+ Latest Mark: A
+  +9 ^^      d
+ +10 ^ ^     |
+ +18 ^ ^     z
+ +19 ^  ^    |
+ +24 ^  ^
+: adz
+: adz
+: d
+     aez
+ --->aez
+  +0 ^       ^
+  +1 ^       (a(*:A)(d|e(*:B))z|aeq)
+  +2 ^       a
+  +3 ^^      (*:A)
+  +8 ^^      (d|e(*:B))
+ Latest Mark: A
+  +9 ^^      d
+ +11 ^^      e
+ +12 ^ ^     (*:B)
+ +17 ^ ^     )
+ Latest Mark: B
+ +18 ^ ^     z
+ +19 ^  ^    |
+ +24 ^  ^
+: aez
+: aez
+: e
+     aeqwerty
+ --->aeqwerty
+  +0 ^            ^
+  +1 ^            (a(*:A)(d|e(*:B))z|aeq)
+  +2 ^            a
+  +3 ^^           (*:A)
+  +8 ^^           (d|e(*:B))
+ Latest Mark: A
+  +9 ^^           d
+ +11 ^^           e
+ +12 ^ ^          (*:B)
+ +17 ^ ^          )
+ Latest Mark: B
+ +18 ^ ^          z
+ +20 ^            a
+ Latest Mark: <unset>
+ +21 ^^           e
+ +22 ^ ^          q
+ +23 ^  ^         )
+ +24 ^  ^
+: aeq
+: aeq
+ /.(*F)/
+     \P\Pabc
+ No match
+ /\btype\b\W*?\btext\b\W*?\bjavascript\b/IS
+ Capturing subpattern count = 0
+ No options
+ First char = 't'
+ Need char = 't'
+ Subject length lower bound = 18
+ No set of starting bytes
+ /\btype\b\W*?\btext\b\W*?\bjavascript\b|\burl\b\W*?\bshell:|<input\b.*?\btype\b\W*?\bimage\b|\bonkeyup\b\W*?\=/IS
+ Capturing subpattern count = 0
+ No options
+ No first char
+ No need char
+ Subject length lower bound = 8
+ Starting byte set: < o t u
+ /a(*SKIP)c|b(*ACCEPT)|/+SI
+ Capturing subpattern count = 0
+ No options
+ No first char
+ No need char
+ Study returned NULL
+     a
+:
++
+ /a(*SKIP)c|b(*ACCEPT)cd(*ACCEPT)|x/SI
+ Capturing subpattern count = 0
+ No options
+ No first char
+ No need char
+ Subject length lower bound = -1
+ Starting byte set: a b x
+     ax
+: x
+ 'a*(*ACCEPT)b'+
+     \N\N
+ No match
+     abc\N\N
+: a
++ bc
+     bbb\N\N
+:
++ bb
+ /-- End of testinput2 --/

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-Removed from v.449
+Added in v.697

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