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

Diff of /code/trunk/testdata/testoutput2

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-revision 210 by ph10,
Wed Aug  8 14:24:50 2007 UTC
+revision 574 by ph10,
Sat Nov 20 17:47:27 2010 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 40 
 No match
+Line 51 
 No match
  /a+bc/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'c'
  /a*bc/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  Need char = 'c'
  /a{3}bc/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'c'
  /(abc|a+z)/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  First char = 'a'
  No need char
-Line 96 
 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 109 
 Failed: missing ) at offset 4
+Line 146 
 Failed: missing ) at offset 4
  Failed: missing ) after comment at offset 7
  /(?z)abc/
- Failed: unrecognized character after (? at offset 2
+ Failed: unrecognized character after (? or (?- at offset 2
  /.*b/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char at start or follows newline
  Need char = 'b'
  /.*?b/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char at start or follows newline
  Need char = 'b'
-Line 140 
 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 151 
 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 162 
 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 169 
 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 189 
 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 310 
 No match
+Line 350 
 No match
  No match
  /ab(?z)cd/
- Failed: unrecognized character after (? at offset 4
+ Failed: unrecognized character after (? or (?- at offset 4
  /^abc|def/I
  Capturing subpattern count = 0
-Line 324 
 No need char
+Line 364 
 No need char
  /.*((abc)$|(def))/I
  Capturing subpattern count = 3
- Partial matching not supported
  No options
  First char at start or follows newline
  No need char
-Line 338 
 No need char
+Line 377 
 No need char
 : <unset>
 : def
- /abc/IP
+ /abc/P
      abc
 : abc
      *** Failers
  No match: POSIX code 17: match failed
- /^abc|def/IP
+ /^abc|def/P
      abcdef
 : abc
      abcdef\B
 : def
- /.*((abc)$|(def))/IP
+ /.*((abc)$|(def))/P
      defabc
 : defabc
 : abc
-Line 360 
 No match: POSIX code 17: match failed
+Line 399 
 No match: POSIX code 17: match failed
 : def
 : def
- /the quick brown fox/IP
+ /the quick brown fox/P
      the quick brown fox
 : the quick brown fox
      *** Failers
-Line 368 
 No match: POSIX code 17: match failed
+Line 407 
 No match: POSIX code 17: match failed
      The Quick Brown Fox
  No match: POSIX code 17: match failed
- /the quick brown fox/IPi
+ /the quick brown fox/Pi
      the quick brown fox
 : the quick brown fox
      The Quick Brown Fox
 : The Quick Brown Fox
- /abc.def/IP
+ /abc.def/P
      *** Failers
  No match: POSIX code 17: match failed
      abc\ndef
  No match: POSIX code 17: match failed
- /abc$/IP
+ /abc$/P
      abc
 : abc
      abc\n
 : abc
- /(abc)\2/IP
+ /(abc)\2/P
  Failed: POSIX code 15: bad back reference at offset 7
- /(abc\1)/IP
+ /(abc\1)/P
      abc
  No match: POSIX code 17: match failed
-Line 401 
 Failed: missing terminating ] for charac
+Line 440 
 Failed: missing terminating ] for charac
  /[^aeiou ]{3,}/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 410 
 No need char
+Line 448 
 No need char
  /<.*>/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = '<'
  Need char = '>'
-Line 419 
 Need char = '>'
+Line 456 
 Need char = '>'
  /<.*?>/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = '<'
  Need char = '>'
-Line 428 
 Need char = '>'
+Line 464 
 Need char = '>'
  /<.*>/IU
  Capturing subpattern count = 0
- Partial matching not supported
  Options: ungreedy
  First char = '<'
  Need char = '>'
-Line 437 
 Need char = '>'
+Line 472 
 Need char = '>'
  /(?U)<.*>/I
  Capturing subpattern count = 0
- Partial matching not supported
  Options: ungreedy
  First char = '<'
  Need char = '>'
-Line 446 
 Need char = '>'
+Line 480 
 Need char = '>'
  /<.*?>/IU
  Capturing subpattern count = 0
- Partial matching not supported
  Options: ungreedy
  First char = '<'
  Need char = '>'
-Line 455 
 Need char = '>'
+Line 488 
 Need char = '>'
  /={3,}/IU
  Capturing subpattern count = 0
- Partial matching not supported
  Options: ungreedy
  First char = '='
  Need char = '='
-Line 464 
 Need char = '='
+Line 496 
 Need char = '='
  /(?U)={3,}?/I
  Capturing subpattern count = 0
- Partial matching not supported
  Options: ungreedy
  First char = '='
  Need char = '='
-Line 522 
 No need char
+Line 553 
 No need char
  /(?s).*/I
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored dotall
  No first char
  No need char
-Line 532 
 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 539 
 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 546 
 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 584 
 Failed: syntax error in subpattern name
+Line 617 
 Failed: syntax error in subpattern name
  /((?s)blah)\s+\1/I
  Capturing subpattern count = 1
  Max back reference = 1
- Partial matching not supported
  No options
  First char = 'b'
  Need char = 'h'
-Line 592 
 Need char = 'h'
+Line 624 
 Need char = 'h'
  /((?i)blah)\s+\1/I
  Capturing subpattern count = 1
  Max back reference = 1
- Partial matching not supported
  No options
  First char = 'b' (caseless)
  Need char = 'h' (caseless)
-Line 612 
 Capturing subpattern count = 1
+Line 643 
 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
- Partial matching not supported
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: C a b c d
  /a$/I
-Line 668 
 Need char = 'c'
+Line 700 
 Need char = 'c'
  /^((a+)(?U)([ab]+)(?-U)([bc]+)(\w*))/I
  Capturing subpattern count = 5
- Partial matching not supported
  Options: anchored
  No first char
  No need char
-Line 685 
 Capturing subpattern count = 0
+Line 716 
 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 692 
 Capturing subpattern count = 1
+Line 724 
 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 699 
 Capturing subpattern count = 0
+Line 732 
 Capturing subpattern count = 0
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b
  /(?<=foo\n)^bar/Im
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  Options: multiline
  No first char
  Need char = 'r'
-Line 719 
 No match
+Line 754 
 No match
  /^(?<=foo\n)bar/Im
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  Options: multiline
  First char at start or follows newline
  Need char = 'r'
-Line 782 
 No need char
+Line 818 
 No need char
  /(?>.*)(?<=(abcd)|(xyz))/I
  Capturing subpattern count = 2
- Partial matching not supported
  No options
  First char at start or follows newline
  No need char
-Line 852 
 No match
+Line 887 
 No match
      a
  No match
- /This one is here because I think Perl 5.005_02 gets the setting of $1 wrong/I
+ /This one is here because Perl behaves differently; see also the following/I
  Capturing subpattern count = 0
  No options
  First char = 'T'
-Line 864 
 Max back reference = 1
+Line 899 
 Max back reference = 1
  Options: anchored
  No first char
  No need char
+     aaaa
+ No match
      aaaaaa
-: aaaaaa
+ No match
-: aa
+ /Perl does not fail these two for the final subjects. Neither did PCRE until/
+ /release 8.01. The problem is in backtracking into a subpattern that contains/
+ No match
+ /a recursive reference to itself. PCRE has now made these into atomic patterns./
+ No match
+ /^(xa|=?\1a){2}$/
+     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 944 
 Failed: missing ) at offset 4
+Line 1004 
 Failed: missing ) at offset 4
  Failed: unrecognized character after (?< at offset 3
  /a(?{)b/
- Failed: unrecognized character after (? at offset 3
+ Failed: unrecognized character after (? or (?- at offset 3
  /a(?{{})b/
- Failed: unrecognized character after (? at offset 3
+ Failed: unrecognized character after (? or (?- at offset 3
  /a(?{}})b/
- Failed: unrecognized character after (? at offset 3
+ Failed: unrecognized character after (? or (?- at offset 3
  /a(?{"{"})b/
- Failed: unrecognized character after (? at offset 3
+ Failed: unrecognized character after (? or (?- at offset 3
  /a(?{"{"}})b/
- Failed: unrecognized character after (? at offset 3
+ Failed: unrecognized character after (? or (?- at offset 3
  /(?(1?)a|b)/
  Failed: malformed number or name 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
-Line 1004 
 copy substring 5 failed -7
+Line 1061 
 copy substring 5 failed -7
  /(.{20})/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
-Line 1022 
 No need char
+Line 1078 
 No need char
  /(.{15})/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
-Line 1037 
 No need char
+Line 1092 
 No need char
  /(.{16})/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
-Line 1104 
 No need char
+Line 1158 
 No need char
  )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+ )((?:[a-zA-Z0-9]+
  )?)?)?)?)?)?)?)?)?otherword/I
  Capturing subpattern count = 8
- Partial matching not supported
+ Contains explicit CR or LF match
  No options
  First char = 'w'
  Need char = 'd'
-Line 1118 
 Need char = 'd'
+Line 1172 
 Need char = 'd'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char at start or follows newline
  Need char = 'X'
-Line 1126 
 Need char = 'X'
+Line 1179 
 Need char = 'X'
  /.*X/IDZs
  ------------------------------------------------------------------
          Bra
-         Any*
+         AllAny*
          X
          Ket
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored dotall
  No first char
  Need char = 'X'
-Line 1151 
 Need char = 'X'
+Line 1203 
 Need char = 'X'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  First char at start or follows newline
  No need char
-Line 1160 
 No need char
+Line 1211 
 No need char
  ------------------------------------------------------------------
          Bra
          CBra 1
-         Any*
+         AllAny*
          X
          Alt
          ^
-Line 1170 
 No need char
+Line 1221 
 No need char
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 1
- Partial matching not supported
  Options: anchored dotall
  No first char
  No need char
-Line 1179 
 No need char
+Line 1229 
 No need char
  ------------------------------------------------------------------
          Bra
          CBra 1
-         Any*
+         AllAny*
          X
          Alt
          ^
-Line 1189 
 No need char
+Line 1239 
 No need char
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 1
- Partial matching not supported
  Options: anchored dotall
  No first char
  No need char
-Line 1199 
 No need char
+Line 1248 
 No need char
          Bra
          Bra
 Opt
-         Any*
+         AllAny*
          X
          Alt
 Opt
-Line 1211 
 No need char
+Line 1260 
 No need char
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
+ Options: anchored
- No options
+ No first char
- First char at start or follows newline
  No need char
  /\Biss\B/I+
-Line 1296 
 No need char
+Line 1344 
 No need char
  /.*iss/Ig+
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char at start or follows newline
  Need char = 's'
-Line 1347 
 No need char
+Line 1394 
 No need char
  /^ab\n/Ig+
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  Options: anchored
  No first char
  No need char
-Line 1356 
 No need char
+Line 1404 
 No need char
  /^ab\n/Img+
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  Options: multiline
  First char at start or follows newline
  Need char = 10
-Line 1397 
 Need char = 'c'
+Line 1446 
 Need char = 'c'
  /a*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
  /a+/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  No need char
  /(baa|a+)/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  Need char = 'a'
  /a{0,3}/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
  /baa{3,}/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'b'
  Need char = 'a'
  /"([^\\"]+|\\.)*"/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  First char = '"'
  Need char = '"'
-Line 1487 
 Need char = 'b'
+Line 1530 
 Need char = 'b'
  /abc*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
  /ab.c*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
  /a.c*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  No need char
  /.c*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
  /ac*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  No need char
  /(a.c*|b.c*)/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
  /a.c*|aba/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  No need char
  /.+a/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  Need char = 'a'
  /(?=abcda)a.*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'a'
  /(?=a)a.*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  No need char
-Line 1563 
 No need char
+Line 1596 
 No need char
  /a\d*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  No need char
  /ab\d*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
-Line 1589 
 Need char = 'd'
+Line 1620 
 Need char = 'd'
  /ab\d+/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
- /a(?(1)b)/I
+ /a(?(1)b)(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  First char = 'a'
  No need char
- /a(?(1)bag|big)/I
+ /a(?(1)bag|big)(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  First char = 'a'
  Need char = 'g'
- /a(?(1)bag|big)*/I
+ /a(?(1)bag|big)*(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  First char = 'a'
  No need char
- /a(?(1)bag|big)+/I
+ /a(?(1)bag|big)+(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  First char = 'a'
  Need char = 'g'
- /a(?(1)b..|b..)/I
+ /a(?(1)b..|b..)(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  First char = 'a'
  Need char = 'b'
-Line 1664 
 No need char
+Line 1694 
 No need char
      \Nabc
  No match
- /a*(b+)(z)(z)/IP
+ /a*(b+)(z)(z)/P
      aaaabbbbzzzz
 : aaaabbbbzz
 : bbbb
-Line 1696 
 Capturing subpattern count = 0
+Line 1726 
 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
  /\(             # ( at start
    (?:           # Non-capturing bracket
-Line 1707 
 Study returned NULL
+Line 1738 
 Study returned NULL
    \)            # Closing )
    /Ix
  Capturing subpattern count = 0
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1736 
 No match
+Line 1766 
 No match
  /\(  ( (?>[^()]+) | (?R) )* \) /Ixg
  Capturing subpattern count = 1
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1751 
 Need char = ')'
+Line 1780 
 Need char = ')'
  /\(  (?: (?>[^()]+) | (?R) ) \) /Ix
  Capturing subpattern count = 0
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1770 
 No match
+Line 1798 
 No match
  /\(  (?: (?>[^()]+) | (?R) )? \) /Ix
  Capturing subpattern count = 0
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1781 
 Need char = ')'
+Line 1808 
 Need char = ')'
  /\(  ( (?>[^()]+) | (?R) )* \) /Ix
  Capturing subpattern count = 1
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1791 
 Need char = ')'
+Line 1817 
 Need char = ')'
  /\( ( ( (?>[^()]+) | (?R) )* ) \) /Ix
  Capturing subpattern count = 2
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1802 
 Need char = ')'
+Line 1827 
 Need char = ')'
  /\( (123)? ( ( (?>[^()]+) | (?R) )* ) \) /Ix
  Capturing subpattern count = 3
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1819 
 Need char = ')'
+Line 1843 
 Need char = ')'
  /\( ( (123)? ( (?>[^()]+) | (?R) )* ) \) /Ix
  Capturing subpattern count = 3
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1836 
 Need char = ')'
+Line 1859 
 Need char = ')'
  /\( (((((((((( ( (?>[^()]+) | (?R) )* )))))))))) \) /Ix
  Capturing subpattern count = 11
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1856 
 Need char = ')'
+Line 1878 
 Need char = ')'
  /\( ( ( (?>[^()<>]+) | ((?>[^()]+)) | (?R) )* ) \) /Ix
  Capturing subpattern count = 3
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1864 
 Need char = ')'
+Line 1885 
 Need char = ')'
 : (abcd(xyz<p>qrs)123)
 : abcd(xyz<p>qrs)123
 : 123
-: <unset>
  /\( ( ( (?>[^()]+) | ((?R)) )* ) \) /Ix
  Capturing subpattern count = 3
- Partial matching not supported
  Options: extended
  First char = '('
  Need char = ')'
-Line 1900 
 No need char
+Line 1919 
 No need char
  ------------------------------------------------------------------
          Bra
          ^
-         [\x00-/:-@[-`{-\xff]
+         [\x00-/:-@[-`{-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 1926 
 No need char
+Line 1945 
 No need char
  ------------------------------------------------------------------
          Bra
          ^
-         [\x00-@[-`{-\xff]
+         [\x00-@[-`{-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 1940 
 Capturing subpattern count = 0
+Line 1959 
 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 1960 
 No need char
+Line 1980 
 No need char
  ------------------------------------------------------------------
          Bra
          ^
-         [\x80-\xff]
+         [\x80-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 1986 
 No need char
+Line 2006 
 No need char
  ------------------------------------------------------------------
          Bra
          ^
-         [\x00-\x08\x0a-\x1f!-\xff]
+         [\x00-\x08\x0a-\x1f!-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 1997 
 No need char
+Line 2017 
 No need char
  /[\n\x0b\x0c\x0d[:blank:]]/IS
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: \x09 \x0a \x0b \x0c \x0d \x20
  /^[[:cntrl:]]/DZ
-Line 2136 
 No need char
+Line 2158 
 No need char
  ------------------------------------------------------------------
          Bra
          ^
-         [ -~\x80-\xff]
+         [ -~\x80-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 2149 
 No need char
+Line 2171 
 No need char
  ------------------------------------------------------------------
          Bra
          ^
-         [\x00-/12:-\xff]
+         [\x00-/12:-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 2162 
 No need char
+Line 2184 
 No need char
  ------------------------------------------------------------------
          Bra
          ^
-         [\x00-\x08\x0a-\x1f!-\xff]
+         [\x00-\x08\x0a-\x1f!-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 2246 
 Need char = 'd'
+Line 2268 
 Need char = 'd'
  /(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\d+(?:\s|$))(\w+)\s+(\270)/I
  Capturing subpattern count = 271
  Max back reference = 270
- Partial matching not supported
  No options
  No first char
  No need char
-Line 2730 
 No need char
+Line 2751 
 No need char
  /[\S]/DZ
  ------------------------------------------------------------------
          Bra
-         [\x00-\x08\x0b\x0e-\x1f!-\xff]
+         [\x00-\x08\x0b\x0e-\x1f!-\xff] (neg)
          Ket
          End
  ------------------------------------------------------------------
-Line 2927 
 Need char = 'c'
+Line 2948 
 Need char = 'c'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 2956 
 No need char
+Line 2976 
 No need char
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'x'
  No need char
-Line 2972 
 No need char
+Line 2991 
 No need char
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'x'
  No need char
-Line 2996 
 No need char
+Line 3014 
 No need char
  /^(\w++|\s++)*$/I
  Capturing subpattern count = 1
- Partial matching not supported
  Options: anchored
  No first char
  No need char
-Line 3010 
 No match
+Line 3027 
 No match
  /(\d++)(\w)/I
  Capturing subpattern count = 2
- Partial matching not supported
  No options
  No first char
  No need char
-Line 3025 
 No match
+Line 3041 
 No match
  /a++b/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
-Line 3034 
 Need char = 'b'
+Line 3049 
 Need char = 'b'
  /(a++b)/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
-Line 3044 
 Need char = 'b'
+Line 3058 
 Need char = 'b'
  /(a++)b/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
-Line 3054 
 Need char = 'b'
+Line 3067 
 Need char = 'b'
  /([^()]++|\([^()]*\))+/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
-Line 3064 
 No need char
+Line 3076 
 No need char
  /\(([^()]++|\([^()]+\))+\)/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  First char = '('
  Need char = ')'
-Line 3127 
 Failed: nothing to repeat at offset 7
+Line 3138 
 Failed: nothing to repeat at offset 7
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'x'
  Need char = 'b'
-Line 3144 
 Need char = 'b'
+Line 3154 
 Need char = 'b'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: ungreedy
  First char = 'x'
  Need char = 'b'
-Line 3173 
 Need char = 'b'
+Line 3182 
 Need char = 'b'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 5
- Partial matching not supported
  Options: anchored
  No first char
  No need char
-Line 3189 
 No need char
+Line 3197 
 No need char
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored
  No first char
  Need char = 'b'
-Line 3207 
 Need char = 'b'
+Line 3214 
 Need char = 'b'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 1
- Partial matching not supported
  Options: anchored
  No first char
  Need char = 'b'
-Line 3222 
 Failed: POSIX collating elements are not
+Line 3228 
 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 3283 
 No need char
+Line 3289 
 No need char
  /< (?: (?(R) \d++  | [^<>]*+) | (?R)) * >/Ix
  Capturing subpattern count = 0
- Partial matching not supported
  Options: extended
  First char = '<'
  Need char = '>'
-Line 3333 
 Need char = 'X'
+Line 3338 
 Need char = 'X'
  /(.*)\d+\1/I
  Capturing subpattern count = 1
  Max back reference = 1
- Partial matching not supported
  No options
  No first char
  No need char
  /(.*)\d+/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  First char at start or follows newline
  No need char
-Line 3348 
 No need char
+Line 3351 
 No need char
  /(.*)\d+\1/Is
  Capturing subpattern count = 1
  Max back reference = 1
- Partial matching not supported
  Options: dotall
  No first char
  No need char
  /(.*)\d+/Is
  Capturing subpattern count = 1
- Partial matching not supported
  Options: anchored dotall
  No first char
  No need char
-Line 3363 
 No need char
+Line 3364 
 No need char
  /(.*(xyz))\d+\2/I
  Capturing subpattern count = 2
  Max back reference = 2
- Partial matching not supported
  No options
  First char at start or follows newline
  Need char = 'z'
 Line 3371 
 Need char = 'z'
  /((.*))\d+\1/I
  Capturing subpattern count = 2
  Max back reference = 1
- Partial matching not supported
  No options
  No first char
  No need char
-Line 3388 
 Need char = 'b'
+Line 3387 
 Need char = 'b'
  /(?=a).*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  First char = 'a'
  No need char
-Line 3435 
 No options
+Line 3433 
 No options
  No first char
  Need char = 'a'
- /(?(1)ab|ac)/I
+ /(?(1)ab|ac)(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  First char = 'a'
  No need char
- /(?(1)abz|acz)/I
+ /(?(1)abz|acz)(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  First char = 'a'
  Need char = 'z'
- /(?(1)abz)/I
+ /(?(1)abz)(.)/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  No first char
  No need char
- /(?(1)abz)123/I
+ /(?(1)abz)(1)23/I
- Capturing subpattern count = 0
+ Capturing subpattern count = 1
  No options
  No first char
  Need char = '3'
-Line 3494 
 Capturing subpattern count = 0
+Line 3492 
 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 3513 
 Capturing subpattern count = 0
+Line 3512 
 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 3546 
 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 3553 
 Capturing subpattern count = 0
+Line 3554 
 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 3710 
 No need char
+Line 3712 
 No need char
  /(\d{3}(?C))*/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
-Line 3839 
 Callout 0: last capture = 1
+Line 3840 
 Callout 0: last capture = 1
  /a(b+)(c*)(?C1)/I
  Capturing subpattern count = 2
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
 Line 3865 
 No match
  /a(b+?)(c*?)(?C1)/I
  Capturing subpattern count = 2
- Partial matching not supported
  No options
  First char = 'a'
  Need char = 'b'
-Line 3906 
 Capturing subpattern count = 0
+Line 3905 
 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 4025 
 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
- Partial matching not supported
- 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
- Partial matching not supported
  Options: anchored
  No first char
  No need char
-Line 4102 
 No match
+Line 4067 
 No match
  /((< (?: (?(R) \d++  | [^<>]*+) | (?2)) * >))/Ix
  Capturing subpattern count = 2
- Partial matching not supported
  Options: extended
  First char = '<'
  Need char = '>'
-Line 4276 
 Named capturing subpatterns:
+Line 4240 
 Named capturing subpatterns:
    one     1
    three   3
    two     2
- Partial matching not supported
  Options: anchored caseless
  No first char
  No need char
-Line 4322 
 No need char
+Line 4285 
 No need char
  /(.*)a/Is
  Capturing subpattern count = 1
- Partial matching not supported
  Options: anchored dotall
  No first char
  Need char = 'a'
-Line 4330 
 Need char = 'a'
+Line 4292 
 Need char = 'a'
  /(.*)a\1/Is
  Capturing subpattern count = 1
  Max back reference = 1
- Partial matching not supported
  Options: dotall
  No first char
  Need char = 'a'
-Line 4338 
 Need char = 'a'
+Line 4299 
 Need char = 'a'
  /(.*)a(b)\2/Is
  Capturing subpattern count = 2
  Max back reference = 2
- Partial matching not supported
  Options: anchored dotall
  No first char
  Need char = 'b'
  /((.*)a|(.*)b)z/Is
  Capturing subpattern count = 3
- Partial matching not supported
  Options: anchored dotall
  No first char
  Need char = 'z'
-Line 4353 
 Need char = 'z'
+Line 4312 
 Need char = 'z'
  /((.*)a|(.*)b)z\1/Is
  Capturing subpattern count = 3
  Max back reference = 1
- Partial matching not supported
  Options: dotall
  No first char
  Need char = 'z'
-Line 4361 
 Need char = 'z'
+Line 4319 
 Need char = 'z'
  /((.*)a|(.*)b)z\2/Is
  Capturing subpattern count = 3
  Max back reference = 2
- Partial matching not supported
  Options: dotall
  No first char
  Need char = 'z'
-Line 4369 
 Need char = 'z'
+Line 4326 
 Need char = 'z'
  /((.*)a|(.*)b)z\3/Is
  Capturing subpattern count = 3
  Max back reference = 3
- Partial matching not supported
  Options: dotall
  No first char
  Need char = 'z'
-Line 4377 
 Need char = 'z'
+Line 4333 
 Need char = 'z'
  /((.*)a|^(.*)b)z\3/Is
  Capturing subpattern count = 3
  Max back reference = 3
- Partial matching not supported
  Options: anchored dotall
  No first char
  Need char = 'z'
  /(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a/Is
  Capturing subpattern count = 31
- Partial matching not supported
  Options: anchored dotall
  No first char
  No need char
-Line 4392 
 No need char
+Line 4346 
 No need char
  /(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\31/Is
  Capturing subpattern count = 31
  Max back reference = 31
- Partial matching not supported
  Options: dotall
  No first char
  No need char
-Line 4400 
 No need char
+Line 4353 
 No need char
  /(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)|(.*)a\32/Is
  Capturing subpattern count = 32
  Max back reference = 32
- Partial matching not supported
  Options: dotall
  No first char
  No need char
-Line 4467 
 Need char = 'c'
+Line 4419 
 Need char = 'c'
  /(a+)*zz/I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  Need char = 'z'
-Line 4604 
 Failed: two named subpatterns have the s
+Line 4555 
 Failed: two named subpatterns have the s
  Capturing subpattern count = 3
  Named capturing subpatterns:
    elem   2
- Partial matching not supported
  No options
  First char = '['
  Need char = ']'
-Line 4622 
 No match
+Line 4572 
 No match
  Capturing subpattern count = 3
  Named capturing subpatterns:
    elem   2
- Partial matching not supported
  No options
  First char = '['
  Need char = ']'
-Line 4729 
 No need char
+Line 4678 
 No need char
  /((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/Ii
  Capturing subpattern count = 3
- Partial matching not supported
  Options: caseless
  No first char
  Need char = 'g' (caseless)
-Line 4739 
 Need char = 'g' (caseless)
+Line 4687 
 Need char = 'g' (caseless)
  /((w\/|-|with)*(free|immediate)*.*?shipping\s*[!.-]*)/IiS
  Capturing subpattern count = 3
- Partial matching not supported
  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 4758 
 Study returned NULL
+Line 4706 
 Study returned NULL
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  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 4782 
 Capturing subpattern count = 1
+Line 4730 
 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 4851 
 No match
+Line 4800 
 No match
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options:
  No first char
  Need char = 'b'
-Line 4896 
 Need char = 'b'
+Line 4844 
 Need char = 'b'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options:
  First char = 'a'
  Need char = 'b'
-Line 5334 
 No match
+Line 5281 
 No match
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 1
- Partial matching not supported
  Options:
  No first char
  Need char = '3'
-Line 5366 
 Need char = '3'
+Line 5312 
 Need char = '3'
  /\b.*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 5375 
 No need char
+Line 5320 
 No need char
  /\b.*/Is
  Capturing subpattern count = 0
- Partial matching not supported
  Options: dotall
  No first char
  No need char
-Line 5384 
 No need char
+Line 5328 
 No need char
  /(?!.bcd).*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 5397 
 No options
+Line 5340 
 No options
  First char = 'a'
  Need char = 'e'
      ab\P
- Partial match
+ Partial match: ab
      abc\P
- Partial match
+ Partial match: abc
      abcd\P
- Partial match
+ Partial match: abcd
      abcde\P
 : abcde
      the quick brown abc\P
- Partial match
+ Partial match: abc
      ** Failers\P
  No match
      the quick brown abxyz fox\P
-Line 5430 
 Need char = '/'
+Line 5373 
 Need char = '/'
 : 02
 : 05
 \P
- Partial match
+ Partial match: 1
 /2\P
- Partial match
+ Partial match: 1/2
 /2/0\P
- Partial match
+ Partial match: 1/2/0
 /2/04\P
 : 1/2/04
 : 1
 : 2
 \P
- Partial match
+ Partial match: 0
 /\P
- Partial match
+ Partial match: 02/
 /0\P
- Partial match
+ Partial match: 02/0
 /1\P
- Partial match
+ Partial match: 02/1
      ** Failers\P
  No match
      \P
-Line 5468 
 No match
+Line 5411 
 No match
  /0{0,2}ABC/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  Need char = 'C'
  /\d{3,}ABC/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  Need char = 'C'
  /\d*ABC/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  Need char = 'C'
  /[abc]+DE/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  Need char = 'E'
-Line 5502 
 Need char = '3'
+Line 5441 
 Need char = '3'
 \P
 : 123
      a\P
- Partial match
+ Partial match: a
      b\P
- Partial match
+ Partial match: b
      c\P
- Partial match
+ Partial match: c
      c12\P
- Partial match
+ Partial match: c12
      c123\P
 : c123
-Line 5518 
 Options: anchored
+Line 5457 
 Options: anchored
  No first char
  Need char = 'X'
 \P
- Partial match
+ Partial match: 1
 \P
- Partial match
+ Partial match: 123
 X
 : 123X
 \P
- Partial match
+ Partial match: 1234
 X
 : 1234X
 \P
- Partial match
+ Partial match: 12345
 X
 : 12345X
      *** Failers
-Line 5575 
 Capturing subpattern count = 1
+Line 5514 
 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
  Study data written to testsavedregex
-Line 5595 
 Capturing subpattern count = 1
+Line 5535 
 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
  Study data written to testsavedregex
-Line 5613 
 No match
+Line 5554 
 No match
  ~<(\w+)/?>(.)*</(\1)>~smgI
  Capturing subpattern count = 3
  Max back reference = 1
- Partial matching not supported
  Options: multiline dotall
  First char = '<'
  Need char = '>'
-Line 5631 
 No need char
+Line 5571 
 No need char
  /line\nbreak/I
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  No options
  First char = 'l'
  Need char = 'k'
-Line 5641 
 Need char = 'k'
+Line 5582 
 Need char = 'k'
  /line\nbreak/If
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  Options: firstline
  First char = 'l'
  Need char = 'k'
-Line 5653 
 No match
+Line 5595 
 No match
  /line\nbreak/Imf
  Capturing subpattern count = 0
+ Contains explicit CR or LF match
  Options: multiline firstline
  First char = 'l'
  Need char = 'k'
-Line 5663 
 No match
+Line 5606 
 No match
      line one\nthis is a line\nbreak in the second line
  No match
- /ab.cd/IP
+ /ab.cd/P
      ab-cd
 : ab-cd
      ab=cd
-Line 5673 
 No match: POSIX code 17: match failed
+Line 5616 
 No match: POSIX code 17: match failed
      ab\ncd
  No match: POSIX code 17: match failed
- /ab.cd/IPs
+ /ab.cd/Ps
      ab-cd
 : ab-cd
      ab=cd
-Line 5917 
 Matched, but too many substrings
+Line 5860 
 Matched, but too many substrings
  /[^()]*(?:\((?R)\)[^()]*)*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 5930 
 No need char
+Line 5872 
 No need char
  /[^()]*(?:\((?>(?R))\)[^()]*)*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 5941 
 No need char
+Line 5882 
 No need char
  /[^()]*(?:\((?R)\))*[^()]*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 5952 
 No need char
+Line 5892 
 No need char
  /(?:\((?R)\))*[^()]*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 5965 
 No need char
+Line 5904 
 No need char
  /(?:\((?R)\))|[^()]*/I
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  No need char
-Line 5978 
 No need char
+Line 5916 
 No need char
      ((this))
 : ((this))
- /a(b)c/IPN
+ /a(b)c/PN
      abc
  Matched with REG_NOSUB
- /a(?P<name>b)c/IPN
+ /a(?P<name>b)c/PN
      abc
  Matched with REG_NOSUB
-Line 6160 
 Named capturing subpatterns:
+Line 6098 
 Named capturing subpatterns:
    A   2
    A   3
  Options: anchored dupnames
+ Duplicate name status changes
  No first char
  No need char
      a1b\CA
-Line 6306 
 Failed: octal value is greater than \377
+Line 6245 
 Failed: octal value is greater than \377
  /\s*,\s*/IS
  Capturing subpattern count = 0
- Partial matching not supported
  No options
  No first char
  Need char = ','
+ Subject length lower bound = 1
  Starting byte set: \x09 \x0a \x0c \x0d \x20 ,
      \x0b,\x0b
 : ,
-Line 6436 
 Unknown newline type at:
+Line 6375 
 Unknown newline type at:
  /.*/I<lf>
  Capturing subpattern count = 0
- Partial matching not supported
  Options:
  Forced newline sequence: LF
  First char at start or follows newline
-Line 6462 
 No need char
+Line 6400 
 No need char
  /\w+(.)(.)?def/Is
  Capturing subpattern count = 2
- Partial matching not supported
  Options: dotall
  No first char
  Need char = 'f'
-Line 6479 
 Need char = 'f'
+Line 6416 
 Need char = 'f'
  +((?:\s|//.*\\n|/[*](?:\\n|.)*?[*]/)*)+I
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
-Line 6614 
 No need char
+Line 6550 
 No need char
  /(a*b|(?i:c*(?-i)d))/IS
  Capturing subpattern count = 1
- Partial matching not supported
  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 6625 
 Capturing subpattern count = 1
+Line 6561 
 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 6632 
 Capturing subpattern count = 1
+Line 6569 
 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 6639 
 Capturing subpattern count = 1
+Line 6577 
 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 6646 
 Capturing subpattern count = 1
+Line 6585 
 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 6653 
 Capturing subpattern count = 1
+Line 6593 
 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 6660 
 Capturing subpattern count = 1
+Line 6601 
 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 6673 
 Starting byte set: a b c d
+Line 6615 
 Starting byte set: a b c d
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored
  No first char
  Need char = 'b'
-Line 6689 
 Need char = 'b'
+Line 6630 
 Need char = 'b'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored
  No first char
  Need char = 'b'
-Line 6705 
 Need char = 'b'
+Line 6645 
 Need char = 'b'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored
  No first char
  Need char = 'b'
-Line 6721 
 Need char = 'b'
+Line 6660 
 Need char = 'b'
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored
  No first char
  Need char = 'A'
-Line 6743 
 No match
+Line 6681 
 No match
          End
  ------------------------------------------------------------------
  Capturing subpattern count = 0
- Partial matching not supported
  Options: anchored caseless
  No first char
  Need char = 'A' (caseless)
-Line 6754 
 Need char = 'A' (caseless)
+Line 6691 
 Need char = 'A' (caseless)
  /(a*|b*)[cd]/IS
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b c d
  /(a+|b*)[cd]/IS
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b c d
  /(a*|b+)[cd]/IS
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
+ Subject length lower bound = 1
  Starting byte set: a b c d
  /(a+|b+)[cd]/IS
  Capturing subpattern count = 1
- Partial matching not supported
  No options
  No first char
  No need char
+ Subject length lower bound = 2
  Starting byte set: a b
  /((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((
-Line 7587 
 No match
+Line 7524 
 No match
          ^
          CBra 1
          Cond
-Cond ref
+Cond nref
          y
          Ket
          [()]
-Line 7653 
 Named capturing subpatterns:
+Line 7590 
 Named capturing subpatterns:
    one     1
    three   3
    two     2
- Partial matching not supported
  Options: anchored caseless
  No first char
  No need char
-Line 7687 
 No match
+Line 7623 
 No match
  /(?=(\w+))\1:/I
  Capturing subpattern count = 1
  Max back reference = 1
- Partial matching not supported
  No options
  No first char
  Need char = ':'
-Line 7700 
 Capturing subpattern count = 1
+Line 7635 
 Capturing subpattern count = 1
  Max back reference = 1
  Named capturing subpatterns:
    abc   1
- Partial matching not supported
  No options
  No first char
  Need char = ':'
-Line 7708 
 Need char = ':'
+Line 7642 
 Need char = ':'
 : abcd:
 : abcd
- /(?'abc'\w+):\k<abc>{2}/
-     a:aaxyz
-: a:aa
-: a
-     ab:ababxyz
-: ab:abab
-: ab
-     ** Failers
- No match
-     a:axyz
- No match
-     ab:abxyz
- No match
  /(?'abc'a|b)(?<abc>d|e)\k<abc>{2}/J
      adaa
 : adaa
-Line 7748 
 No match
+Line 7668 
 No match
      bddd
  No match
- /^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x
-     abd
-: abd
-: a
-     ce
-: ce
  /(?(<bc))/
  Failed: malformed number or name after (?( at offset 6
-Line 7785 
 Failed: reference to non-existent subpat
+Line 7698 
 Failed: reference to non-existent subpat
 : abcabc1Xabc2XabcX
 : abcabc1Xabc2XabcX
- /^(?(DEFINE) (?<A> a) (?<B> b) )  (?&A) (?&B) /x
-     abcd
-: ab
-: <unset>
-: <unset>
- /(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
-   (?(DEFINE)
-   (?<NAME_PAT>[a-z]+)
-   (?<ADDRESS_PAT>\d+)
-   )/x
-     metcalfe 33
-: metcalfe 33
-: metcalfe
-: 33
-: <unset>
-: <unset>
  /^(?(DEFINE) abc | xyz ) /x
  Failed: DEFINE group contains more than one branch at offset 22
-Line 7844 
 No match
+Line 7739 
 No match
  No match
  /^abc./mgx<any>
-     abc1 \x0aabc2 \x0babc3xx \x0cabc4 \x0dabc5xx \x0d\x0aabc6 \x85abc7 \x{2028}abc8 \x{2029}abc9 JUNK
+     abc1 \x0aabc2 \x0babc3xx \x0cabc4 \x0dabc5xx \x0d\x0aabc6 \x85abc7 JUNK
 : abc1
 : abc2
 : abc3
-Line 7854 
 No match
+Line 7749 
 No match
 : abc7
  /abc.$/mgx<any>
-     abc1\x0a abc2\x0b abc3\x0c abc4\x0d abc5\x0d\x0a abc6\x85 abc7\x{2028} abc8\x{2029} abc9
+     abc1\x0a abc2\x0b abc3\x0c abc4\x0d abc5\x0d\x0a abc6\x85 abc7 abc9
 : abc1
 : abc2
 : abc3
-Line 7868 
 No match
+Line 7763 
 No match
  /a/<any><crlf>
  Failed: inconsistent NEWLINE options at offset 0
- /^a\Rb/
+ /^a\Rb/<bsr_unicode>
      a\nb
 : a\x0ab
      a\rb
-Line 7886 
 No match
+Line 7781 
 No match
      a\n\rb
  No match
- /^a\R*b/
+ /^a\R*b/<bsr_unicode>
      ab
 : ab
      a\nb
-Line 7906 
 No match
+Line 7801 
 No match
      a\n\r\x85\x0cb
 : a\x0a\x0d\x85\x0cb
- /^a\R+b/
+ /^a\R+b/<bsr_unicode>
      a\nb
 : a\x0ab
      a\rb
-Line 7928 
 No match
+Line 7823 
 No match
      ab
  No match
- /^a\R{1,3}b/
+ /^a\R{1,3}b/<bsr_unicode>
      a\nb
 : a\x0ab
      a\n\rb
-Line 7950 
 No match
+Line 7845 
 No match
      a\r
  No match
- /^a[\R]b/
+ /^a[\R]b/<bsr_unicode>
      aRb
 : aRb
      ** Failers
-Line 7980 
 Need char = 'P'
+Line 7875 
 Need char = 'P'
 : PXP
 : P
- /(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/
-.2.3.4
-: 1.2.3.4
-: <unset>
-: .4
-.111.10.206
-: 131.111.10.206
-: <unset>
-: .206
-.0.0.0
-: 10.0.0.0
-: <unset>
-: .0
-     ** Failers
- No match
-.6
- No match
-.3.4.5
- No match
- /\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/
-.2.3.4
-: 1.2.3.4
-: .4
-: <unset>
-.111.10.206
-: 131.111.10.206
-: .206
-: <unset>
-.0.0.0
-: 10.0.0.0
-: .0
-: <unset>
-     ** Failers
- No match
-.6
- No match
-.3.4.5
- No match
  /(?:a(?&abc)b)*(?<abc>x)/
 axbaxbaxbx456
 : axbaxbaxbx
-Line 8057 
 No match
+Line 7912 
 No match
     DEFabcABCXYZ
  No match
- /^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
-     ababababbbabZXXXX
-: ababababbbabZ
-: ab
-: b
  /^(a)\g-2/
- Failed: reference to non-existent subpattern at offset 4
+ Failed: reference to non-existent subpattern at offset 7
  /^(a)\g/
- Failed: \g is not followed by a braced name or an optionally braced non-zero number at offset 4
+ Failed: a numbered reference must not be zero at offset 5
  /^(a)\g{0}/
- Failed: \g is not followed by a braced name or an optionally braced non-zero number at offset 4
+ Failed: a numbered reference must not be zero at offset 8
  /^(a)\g{3/
- Failed: \g is not followed by a braced name or an optionally braced non-zero number at offset 4
+ Failed: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number at offset 8
  /^(a)\g{4a}/
  Failed: reference to non-existent subpattern at offset 9
-Line 8156 
 No match
+Line 8005 
 No match
 +
  /abc.$/mgx<anycrlf>
-     abc1\x0a abc2\x0b abc3\x0c abc4\x0d abc5\x0d\x0a abc6\x85 abc7\x{2028} abc8\x{2029} abc9
+     abc1\x0a abc2\x0b abc3\x0c abc4\x0d abc5\x0d\x0a abc6\x85 abc9
 : abc1
 : abc4
 : abc5
-Line 8210 
 No match
+Line 8059 
 No match
  No match
  /x(?-0)y/
- Failed: (?+ or (?- or (?(+ or (?(- must be followed by a non-zero number at offset 5
+ Failed: a numbered reference must not be zero at offset 5
  /x(?-1)y/
  Failed: reference to non-existent subpattern at offset 5
  /x(?+0)y/
- Failed: (?+ or (?- or (?(+ or (?(- must be followed by a non-zero number at offset 5
+ Failed: a numbered reference must not be zero at offset 5
  /x(?+1)y/
  Failed: reference to non-existent subpattern at offset 5
-Line 8298 
 Failed: reference to non-existent subpat
+Line 8147 
 Failed: reference to non-existent subpat
  /((?(-2)a))/BZ
  Failed: reference to non-existent subpattern at offset 7
- /^(?(+1)X|Y)/BZ
+ /^(?(+1)X|Y)(.)/BZ
  ------------------------------------------------------------------
          Bra
          ^
-Line 8308 
 Failed: reference to non-existent subpat
+Line 8157 
 Failed: reference to non-existent subpat
          Alt
          Y
          Ket
+         CBra 1
+         Any
+         Ket
          Ket
          End
  ------------------------------------------------------------------
-     Y
+     Y!
-: Y
+: Y!
+: !
- /(foo)\Kbar/
-     foobar
-: bar
-: foo
- /(foo)(\Kbar|baz)/
-     foobar
-: bar
-: foo
-: bar
-     foobaz
-: foobaz
-: foo
-: baz
- /(foo\Kbar)baz/
-     foobarbaz
-: barbaz
-: foobar
  /(?<A>tom|bon)-\k{A}/
      tom-tom
-Line 8346 
 No match
+Line 8179 
 No match
      tom-bon
  No match
- /(?<A>tom|bon)-\g{A}/
-     tom-tom
-: tom-tom
-: tom
-     bon-bon
-: bon-bon
-: bon
  /\g{A/
  Failed: syntax error in subpattern name (missing terminator) at offset 4
-Line 8448 
 Failed: syntax error in subpattern name
+Line 8273 
 Failed: syntax error in subpattern name
 : <unset>
 : x
- /(?|(abc)|(xyz))\1/
-     abcabc
-: abcabc
-: abc
-     xyzxyz
-: xyzxyz
-: xyz
-     ** Failers
- No match
-     abcxyz
- No match
-     xyzabc
- No match
- /(?|(abc)|(xyz))(?1)/
-     abcabc
-: abcabc
-: abc
-     xyzabc
-: xyzabc
-: xyz
-     ** Failers
- No match
-     xyzxyz
- No match
- /\H\h\V\v/
-     X X\x0a
-: X X\x0a
-     X\x09X\x0b
-: X\x09X\x0b
-     ** Failers
- No match
-     \xa0 X\x0a
- No match
- /\H*\h+\V?\v{3,4}/
-     \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a
-: \x09 \xa0X\x0a\x0b\x0c\x0d
-     \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a
-: \x09 \xa0\x0a\x0b\x0c\x0d
-     \x09\x20\xa0\x0a\x0b\x0c
-: \x09 \xa0\x0a\x0b\x0c
-     ** Failers
- No match
-     \x09\x20\xa0\x0a\x0b
- No match
- /\H{3,4}/
-     XY  ABCDE
-: ABCD
-     XY  PQR ST
-: PQR
- /.\h{3,4}./
-     XY  AB    PQRS
-: B    P
- /\h*X\h?\H+Y\H?Z/
-     >XNNNYZ
-: XNNNYZ
-     >  X NYQZ
-:   X NYQZ
-     ** Failers
- No match
-     >XYZ
- No match
-     >  X NY Z
- No match
- /\v*X\v?Y\v+Z\V*\x0a\V+\x0b\V{2,3}\x0c/
-     >XY\x0aZ\x0aA\x0bNN\x0c
-: XY\x0aZ\x0aA\x0bNN\x0c
-     >\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c
-: \x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c
  /[\h]/BZ
  ------------------------------------------------------------------
          Bra
-Line 8820 
 Failed: missing terminating ] for charac
+Line 8569 
 Failed: missing terminating ] for charac
          End
  ------------------------------------------------------------------
- /^a+(*FAIL)/
-     aaaaaa
- No match
- /a+b?c+(*FAIL)/
-     aaabccc
- No match
- /a+b?(*PRUNE)c+(*FAIL)/
-     aaabccc
- No match
- /a+b?(*COMMIT)c+(*FAIL)/
-     aaabccc
- No match
- /a+b?(*SKIP)c+(*FAIL)/
-     aaabcccaaabccc
- No match
- /^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/
-     aaaxxxxxx
-: aaaxxxxxx
-     aaa++++++
-: aaa
-     bbbxxxxx
-: bbbxxxxx
-     bbb+++++
-: bbb
-     cccxxxx
-: cccxxxx
-     ccc++++
-: ccc
-     dddddddd
-: ddd
- /^(aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/
-     aaaxxxxxx
-: aaaxxxxxx
-: aaaxxxxxx
-     aaa++++++
-: aaa
-: aaa
-     bbbxxxxx
-: bbbxxxxx
-: bbbxxxxx
-     bbb+++++
-: bbb
-: bbb
-     cccxxxx
-: cccxxxx
-: cccxxxx
-     ccc++++
-: ccc
-: ccc
-     dddddddd
-: ddd
-: ddd
- /a+b?(*THEN)c+(*FAIL)/
-     aaabccc
- No match
- /(A (A|B(*ACCEPT)|C) D)(E)/x
-     ABX
-: AB
-     AADE
-: AADE
-: AAD
-: A
-: E
-     ACDE
-: ACDE
-: ACD
-: C
-: E
-     ** Failers
- No match
-     AD
- No match
  /^a+(*FAIL)/C
      aaaaaa
  --->aaaaaa
-Line 9029 
 No match
+Line 8697 
 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
+ /\g6666666666/
+ Failed: number is too big at offset 11
+ /[\g6666666666]/
+ Failed: number is too big at offset 12
+ /(?1)\c[/
+ Failed: reference to non-existent subpattern at offset 3
+ /.+A/<crlf>
+     \r\nA
+ No match
+ /\nA/<crlf>
+     \r\nA
+: \x0aA
+ /[\r\n]A/<crlf>
+     \r\nA
+: \x0aA
+ /(\r|\n)A/<crlf>
+     \r\nA
+: \x0aA
+: \x0a
+ /a(*CR)b/
+ Failed: (*VERB) not recognized at offset 5
+ /(*CR)a.b/
+     a\nb
+: a\x0ab
+     ** Failers
+ No match
+     a\rb
+ No match
+ /(*CR)a.b/<lf>
+     a\nb
+: a\x0ab
+     ** Failers
+ No match
+     a\rb
+ No match
+ /(*LF)a.b/<CRLF>
+     a\rb
+: a\x0db
+     ** Failers
+ No match
+     a\nb
+ No match
+ /(*CRLF)a.b/
+     a\rb
+: a\x0db
+     a\nb
+: a\x0ab
+     ** Failers
+ No match
+     a\r\nb
+ No match
+ /(*ANYCRLF)a.b/<CR>
+     ** Failers
+ No match
+     a\rb
+ No match
+     a\nb
+ No match
+     a\r\nb
+ No match
+ /(*ANY)a.b/<cr>
+     ** Failers
+ No match
+     a\rb
+ No match
+     a\nb
+ No match
+     a\r\nb
+ 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
+ Options: bsr_anycrlf
+ First char = 'a'
+ Need char = 'b'
+     a\rb
+: a\x0db
+     a\nb
+: a\x0ab
+     a\r\nb
+: a\x0d\x0ab
+     ** Failers
+ No match
+     a\x85b
+ No match
+     a\x0bb
+ No match
+ /a\Rb/I<bsr_unicode>
+ Capturing subpattern count = 0
+ Options: bsr_unicode
+ First char = 'a'
+ Need char = 'b'
+     a\rb
+: a\x0db
+     a\nb
+: a\x0ab
+     a\r\nb
+: a\x0d\x0ab
+     a\x85b
+: a\x85b
+     a\x0bb
+: a\x0bb
+     ** Failers
+ No match
+     a\x85b\<bsr_anycrlf>
+ No match
+     a\x0bb\<bsr_anycrlf>
+ No match
+ /a\R?b/I<bsr_anycrlf>
+ Capturing subpattern count = 0
+ Options: bsr_anycrlf
+ First char = 'a'
+ Need char = 'b'
+     a\rb
+: a\x0db
+     a\nb
+: a\x0ab
+     a\r\nb
+: a\x0d\x0ab
+     ** Failers
+ No match
+     a\x85b
+ No match
+     a\x0bb
+ No match
+ /a\R?b/I<bsr_unicode>
+ Capturing subpattern count = 0
+ Options: bsr_unicode
+ First char = 'a'
+ Need char = 'b'
+     a\rb
+: a\x0db
+     a\nb
+: a\x0ab
+     a\r\nb
+: a\x0d\x0ab
+     a\x85b
+: a\x85b
+     a\x0bb
+: a\x0bb
+     ** Failers
+ No match
+     a\x85b\<bsr_anycrlf>
+ No match
+     a\x0bb\<bsr_anycrlf>
+ No match
+ /a\R{2,4}b/I<bsr_anycrlf>
+ Capturing subpattern count = 0
+ Options: bsr_anycrlf
+ First char = 'a'
+ Need char = 'b'
+     a\r\n\nb
+: a\x0d\x0a\x0ab
+     a\n\r\rb
+: a\x0a\x0d\x0db
+     a\r\n\r\n\r\n\r\nb
+: a\x0d\x0a\x0d\x0a\x0d\x0a\x0d\x0ab
+     ** Failers
+ No match
+     a\x85\85b
+ No match
+     a\x0b\0bb
+ No match
+ /a\R{2,4}b/I<bsr_unicode>
+ Capturing subpattern count = 0
+ Options: bsr_unicode
+ First char = 'a'
+ Need char = 'b'
+     a\r\rb
+: a\x0d\x0db
+     a\n\n\nb
+: a\x0a\x0a\x0ab
+     a\r\n\n\r\rb
+: a\x0d\x0a\x0a\x0d\x0db
+     a\x85\85b
+ No match
+     a\x0b\0bb
+ No match
+     ** Failers
+ No match
+     a\r\r\r\r\rb
+ No match
+     a\x85\85b\<bsr_anycrlf>
+ No match
+     a\x0b\0bb\<bsr_anycrlf>
+ No match
+ /(*BSR_ANYCRLF)a\Rb/I
+ Capturing subpattern count = 0
+ Options: bsr_anycrlf
+ First char = 'a'
+ Need char = 'b'
+     a\nb
+: a\x0ab
+     a\rb
+: a\x0db
+ /(*BSR_UNICODE)a\Rb/I
+ Capturing subpattern count = 0
+ Options: bsr_unicode
+ First char = 'a'
+ Need char = 'b'
+     a\x85b
+: a\x85b
+ /(*BSR_ANYCRLF)(*CRLF)a\Rb/I
+ Capturing subpattern count = 0
+ Options: bsr_anycrlf
+ Forced newline sequence: CRLF
+ First char = 'a'
+ Need char = 'b'
+     a\nb
+: a\x0ab
+     a\rb
+: a\x0db
+ /(*CRLF)(*BSR_UNICODE)a\Rb/I
+ Capturing subpattern count = 0
+ Options: bsr_unicode
+ Forced newline sequence: CRLF
+ First char = 'a'
+ Need char = 'b'
+     a\x85b
+: a\x85b
+ /(*CRLF)(*BSR_ANYCRLF)(*CR)ab/I
+ Capturing subpattern count = 0
+ Options: bsr_anycrlf
+ Forced newline sequence: CR
+ First char = 'a'
+ Need char = 'b'
+ /(?<a>)(?&)/
+ Failed: subpattern name expected at offset 9
+ /(?<abc>)(?&a)/
+ Failed: reference to non-existent subpattern at offset 12
+ /(?<a>)(?&aaaaaaaaaaaaaaaaaaaaaaa)/
+ Failed: reference to non-existent subpattern at offset 32
+ /(?+-a)/
+ Failed: digit expected after (?+ at offset 3
+ /(?-+a)/
+ Failed: unrecognized character after (? or (?- at offset 3
+ /(?(-1))/
+ Failed: reference to non-existent subpattern at offset 6
+ /(?(+10))/
+ Failed: reference to non-existent subpattern at offset 7
+ /(?(10))/
+ Failed: reference to non-existent subpattern at offset 6
+ /(?(+2))()()/
+ /(?(2))()()/
+ /\k''/
+ Failed: subpattern name expected at offset 3
+ /\k<>/
+ Failed: subpattern name expected at offset 3
+ /\k{}/
+ Failed: subpattern name expected at offset 3
+ /(?P=)/
+ Failed: subpattern name expected at offset 4
+ /(?P>)/
+ Failed: subpattern name expected at offset 4
+ /(?!\w)(?R)/
+ Failed: recursive call could loop indefinitely at offset 9
+ /(?=\w)(?R)/
+ Failed: recursive call could loop indefinitely at offset 9
+ /(?<!\w)(?R)/
+ Failed: recursive call could loop indefinitely at offset 10
+ /(?<=\w)(?R)/
+ Failed: recursive call could loop indefinitely at offset 10
+ /[[:foo:]]/
+ Failed: unknown POSIX class name at offset 3
+ /[[:1234:]]/
+ Failed: unknown POSIX class name at offset 3
+ /[[:f\oo:]]/
+ Failed: unknown POSIX class name at offset 3
+ /[[: :]]/
+ Failed: unknown POSIX class name at offset 3
+ /[[:...:]]/
+ Failed: unknown POSIX class name at offset 3
+ /[[:l\ower:]]/
+ Failed: unknown POSIX class name at offset 3
+ /[[:abc\:]]/
+ Failed: unknown POSIX class name at offset 3
+ /[abc[:x\]pqr:]]/
+ Failed: unknown POSIX class name at offset 6
+ /[[:a\dz:]]/
+ Failed: unknown POSIX class name at offset 3
+ /(^(a|b\g<-1'c))/
+ Failed: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number at offset 15
+ /^(?+1)(?<a>x|y){0}z/
+     xzxx
+: xz
+     yzyy
+: yz
+     ** Failers
+ No match
+     xxz
+ No match
+ /(\3)(\1)(a)/
+     cat
+ No match
+ /(\3)(\1)(a)/<JS>
+     cat
+: a
+:
+:
+: a
+ /TA]/
+     The ACTA] comes
+: TA]
+ /TA]/<JS>
+ Failed: ] is an invalid data character in JavaScript compatibility mode at offset 2
+ /(?2)[]a()b](abc)/
+ Failed: reference to non-existent subpattern at offset 3
+ /(?2)[^]a()b](abc)/
+ Failed: reference to non-existent subpattern at offset 3
+ /(?1)[]a()b](abc)/
+     abcbabc
+: abcbabc
+: abc
+     ** Failers
+ No match
+     abcXabc
+ No match
+ /(?1)[^]a()b](abc)/
+     abcXabc
+: abcXabc
+: abc
+     ** Failers
+ No match
+     abcbabc
+ No match
+ /(?2)[]a()b](abc)(xyz)/
+     xyzbabcxyz
+: xyzbabcxyz
+: abc
+: xyz
+ /(?&N)[]a(?<N>)](?<M>abc)/
+ Failed: reference to non-existent subpattern at offset 4
+ /(?&N)[]a(?<N>)](abc)/
+ Failed: reference to non-existent subpattern at offset 4
+ /a[]b/
+ Failed: missing terminating ] for character class at offset 4
+ /a[^]b/
+ Failed: missing terminating ] for character class at offset 5
+ /a[]b/<JS>
+     ** Failers
+ No match
+     ab
+ No match
+ /a[]+b/<JS>
+     ** Failers
+ No match
+     ab
+ No match
+ /a[]*+b/<JS>
+     ** Failers
+ No match
+     ab
+ No match
+ /a[^]b/<JS>
+     aXb
+: aXb
+     a\nb
+: a\x0ab
+     ** Failers
+ No match
+     ab
+ No match
+ /a[^]+b/<JS>
+     aXb
+: aXb
+     a\nX\nXb
+: a\x0aX\x0aXb
+     ** Failers
+ No match
+     ab
+ No match
+ /a(?!)+b/
+ Failed: nothing to repeat at offset 5
+ /a(*FAIL)+b/
+ Failed: nothing to repeat at offset 8
+ /(abc|pqr|123){0}[xyz]/SI
+ 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
+ Capturing subpattern count = 0
+ Options:
+ No first char
+ No need char
+    adc
+ --->adc
+  +0 ^       (?(?=.*b)b|^)
+  +2 ^       (?=.*b)
+  +5 ^       .*
+  +7 ^  ^    b
+  +7 ^ ^     b
+  +7 ^^      b
+  +7 ^       b
+ +12 ^       )
+ +13 ^
+:
+    abc
+ --->abc
+  +0 ^       (?(?=.*b)b|^)
+  +2 ^       (?=.*b)
+  +5 ^       .*
+  +7 ^  ^    b
+  +7 ^ ^     b
+  +7 ^^      b
+  +8 ^ ^     )
+  +9 ^       b
+  +0  ^      (?(?=.*b)b|^)
+  +2  ^      (?=.*b)
+  +5  ^      .*
+  +7  ^ ^    b
+  +7  ^^     b
+  +7  ^      b
+  +8  ^^     )
+  +9  ^      b
+ +10  ^^     |
+ +13  ^^
+: b
+ /(?(?=b).*b|^d)/I
+ Capturing subpattern count = 0
+ No options
+ No first char
+ No need char
+ /(?(?=.*b).*b|^d)/I
+ Capturing subpattern count = 0
+ No options
+ First char at start or follows newline
+ No need char
+ /a?|b?/P
+     abc
+: a
+     ** Failers
+:
+     ddd\N
+ No match: POSIX code 17: match failed
+ /xyz/C
+   xyz
+ --->xyz
+  +0 ^       x
+  +1 ^^      y
+  +2 ^ ^     z
+  +3 ^  ^
+: xyz
+   abcxyz
+ --->abcxyz
+  +0    ^       x
+  +1    ^^      y
+  +2    ^ ^     z
+  +3    ^  ^
+: xyz
+   abcxyz\Y
+ --->abcxyz
+  +0 ^          x
+  +0  ^         x
+  +0   ^        x
+  +0    ^       x
+  +1    ^^      y
+  +2    ^ ^     z
+  +3    ^  ^
+: xyz
+   ** Failers
+ No match
+   abc
+ No match
+   abc\Y
+ --->abc
+  +0 ^       x
+  +0  ^      x
+  +0   ^     x
+  +0    ^    x
+ No match
+   abcxypqr
+ No match
+   abcxypqr\Y
+ --->abcxypqr
+  +0 ^            x
+  +0  ^           x
+  +0   ^          x
+  +0    ^         x
+  +1    ^^        y
+  +2    ^ ^       z
+  +0     ^        x
+  +0      ^       x
+  +0       ^      x
+  +0        ^     x
+  +0         ^    x
+ No match
+ /^"((?(?=[a])[^"])|b)*"$/C
+     "ab"
+ --->"ab"
+  +0 ^        ^
+  +1 ^        "
+  +2 ^^       ((?(?=[a])[^"])|b)*
+  +3 ^^       (?(?=[a])[^"])
+  +5 ^^       (?=[a])
+  +8 ^^       [a]
+ +11 ^ ^      )
+ +12 ^^       [^"]
+ +16 ^ ^      )
+ +17 ^ ^      |
+  +3 ^ ^      (?(?=[a])[^"])
+  +5 ^ ^      (?=[a])
+  +8 ^ ^      [a]
+ +21 ^ ^      "
+ +18 ^ ^      b
+ +19 ^  ^     )
+  +3 ^  ^     (?(?=[a])[^"])
+  +5 ^  ^     (?=[a])
+  +8 ^  ^     [a]
+ +21 ^  ^     "
+ +22 ^   ^    $
+ +23 ^   ^
+: "ab"
+:
+ /^"((?(?=[a])[^"])|b)*"$/
+     "ab"
+: "ab"
+:
+ /^X(?5)(a)(?|(b)|(q))(c)(d)Y/
+ Failed: reference to non-existent subpattern at offset 5
+ /^X(?&N)(a)(?|(b)|(q))(c)(d)(?<N>Y)/
+     XYabcdY
+: XYabcdY
+: a
+: b
+: c
+: d
+: Y
+ /Xa{2,4}b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /Xa{2,4}?b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /Xa{2,4}+b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /X\d{2,4}b/
+     X\P
+ Partial match: X
+     X3\P
+ Partial match: X3
+     X33\P
+ Partial match: X33
+     X333\P
+ Partial match: X333
+     X3333\P
+ Partial match: X3333
+ /X\d{2,4}?b/
+     X\P
+ Partial match: X
+     X3\P
+ Partial match: X3
+     X33\P
+ Partial match: X33
+     X333\P
+ Partial match: X333
+     X3333\P
+ Partial match: X3333
+ /X\d{2,4}+b/
+     X\P
+ Partial match: X
+     X3\P
+ Partial match: X3
+     X33\P
+ Partial match: X33
+     X333\P
+ Partial match: X333
+     X3333\P
+ Partial match: X3333
+ /X\D{2,4}b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /X\D{2,4}?b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /X\D{2,4}+b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /X[abc]{2,4}b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /X[abc]{2,4}?b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /X[abc]{2,4}+b/
+     X\P
+ Partial match: X
+     Xa\P
+ Partial match: Xa
+     Xaa\P
+ Partial match: Xaa
+     Xaaa\P
+ Partial match: Xaaa
+     Xaaaa\P
+ Partial match: Xaaaa
+ /X[^a]{2,4}b/
+     X\P
+ Partial match: X
+     Xz\P
+ Partial match: Xz
+     Xzz\P
+ Partial match: Xzz
+     Xzzz\P
+ Partial match: Xzzz
+     Xzzzz\P
+ Partial match: Xzzzz
+ /X[^a]{2,4}?b/
+     X\P
+ Partial match: X
+     Xz\P
+ Partial match: Xz
+     Xzz\P
+ Partial match: Xzz
+     Xzzz\P
+ Partial match: Xzzz
+     Xzzzz\P
+ Partial match: Xzzzz
+ /X[^a]{2,4}+b/
+     X\P
+ Partial match: X
+     Xz\P
+ Partial match: Xz
+     Xzz\P
+ Partial match: Xzz
+     Xzzz\P
+ Partial match: Xzzz
+     Xzzzz\P
+ Partial match: Xzzzz
+ /(Y)X\1{2,4}b/
+     YX\P
+ Partial match: YX
+     YXY\P
+ Partial match: YXY
+     YXYY\P
+ Partial match: YXYY
+     YXYYY\P
+ Partial match: YXYYY
+     YXYYYY\P
+ Partial match: YXYYYY
+ /(Y)X\1{2,4}?b/
+     YX\P
+ Partial match: YX
+     YXY\P
+ Partial match: YXY
+     YXYY\P
+ Partial match: YXYY
+     YXYYY\P
+ Partial match: YXYYY
+     YXYYYY\P
+ Partial match: YXYYYY
+ /(Y)X\1{2,4}+b/
+     YX\P
+ Partial match: YX
+     YXY\P
+ Partial match: YXY
+     YXYY\P
+ Partial match: YXYY
+     YXYYY\P
+ Partial match: YXYYY
+     YXYYYY\P
+ Partial match: YXYYYY
+ /\++\KZ|\d+X|9+Y/
+     ++++123999\P
+ Partial match: 123999
+     ++++123999Y\P
+: 999Y
+     ++++Z1234\P
+: Z
+ /Z(*F)/
+     Z\P
+ No match
+     ZA\P
+ No match
+ /Z(?!)/
+     Z\P
+ No match
+     ZA\P
+ No match
+ /dog(sbody)?/
+     dogs\P
+: dog
+     dogs\P\P
+ Partial match: dogs
+ /dog(sbody)??/
+     dogs\P
+: dog
+     dogs\P\P
+: dog
+ /dog|dogsbody/
+     dogs\P
+: dog
+     dogs\P\P
+: dog
+ /dogsbody|dog/
+     dogs\P
+: dog
+     dogs\P\P
+ Partial match: dogs
+ /\bthe cat\b/
+     the cat\P
+: the cat
+     the cat\P\P
+ Partial match: the cat
+ /abc/
+    abc\P
+: abc
+    abc\P\P
+: abc
+ /\w+A/P
+    CDAAAAB
+: CDAAAA
+ /\w+A/PU
+    CDAAAAB
+: CDA
+ /abc\K123/
+     xyzabc123pqr
+: 123
+     xyzabc12\P
+ Partial match: abc12
+     xyzabc12\P\P
+ Partial match: abc12
+ /(?<=abc)123/
+     xyzabc123pqr
+: 123
+     xyzabc12\P
+ Partial match: abc12
+     xyzabc12\P\P
+ Partial match: abc12
+ /\babc\b/
+     +++abc+++
+: abc
+     +++ab\P
+ Partial match: +ab
+     +++ab\P\P
+ Partial match: +ab
+ /(?&word)(?&element)(?(DEFINE)(?<element><[^m][^>]>[^<])(?<word>\w*+))/BZ
+ ------------------------------------------------------------------
+         Bra
+         Once
+         Recurse
+         Ket
+         Once
+         Recurse
+         Ket
+         Cond
+         Cond def
+         CBra 1
+         <
+         [^m]
+         [^>]
+         >
+         [^<]
+         Ket
+         CBra 2
+         \w*+
+         Ket
+         Ket
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(?&word)(?&element)(?(DEFINE)(?<element><[^\d][^>]>[^<])(?<word>\w*+))/BZ
+ ------------------------------------------------------------------
+         Bra
+         Once
+         Recurse
+         Ket
+         Once
+         Recurse
+         Ket
+         Cond
+         Cond def
+         CBra 1
+         <
+         [\x00-/:-\xff] (neg)
+         [^>]
+         >
+         [^<]
+         Ket
+         CBra 2
+         \w*+
+         Ket
+         Ket
+         Ket
+         End
+ ------------------------------------------------------------------
+ /(ab)(x(y)z(cd(*ACCEPT)))pq/BZ
+ ------------------------------------------------------------------
+         Bra
+         CBra 1
+         ab
+         Ket
+         CBra 2
+         x
+         CBra 3
+         y
+         Ket
+         z
+         CBra 4
+         cd
+         Close 4
+         Close 2
+         *ACCEPT
+         Ket
+         Ket
+         pq
+         Ket
+         End
+ ------------------------------------------------------------------
+ /abc\K/+
+     abcdef
+:
++ def
+     abcdef\N\N
+:
++ def
+     xyzabcdef\N\N
+:
++ def
+     ** Failers
+ No match
+     abcdef\N
+ No match
+     xyzabcdef\N
+ No match
+ /^(?:(?=abc)|abc\K)/+
+     abcdef
+:
++ abcdef
+     abcdef\N\N
+:
++ def
+     ** Failers
+ No match
+     abcdef\N
+ No match
+ /a?b?/+
+     xyz
+:
++ xyz
+     xyzabc
+:
++ xyzabc
+     xyzabc\N
+: ab
++ c
+     xyzabc\N\N
+:
++ yzabc
+     xyz\N\N
+:
++ yz
+     ** Failers
+:
++ ** Failers
+     xyz\N
+ No match
+ /^a?b?/+
+     xyz
+:
++ xyz
+     xyzabc
+:
++ xyzabc
+     ** Failers
+:
++ ** Failers
+     xyzabc\N
+ No match
+     xyzabc\N\N
+ No match
+     xyz\N\N
+ No match
+     xyz\N
+ No match
+ /^(?<name>a|b\g<name>c)/
+     aaaa
+: a
+: a
+     bacxxx
+: bac
+: bac
+     bbaccxxx
+: bbacc
+: bbacc
+     bbbacccxx
+: bbbaccc
+: bbbaccc
+ /^(?<name>a|b\g'name'c)/
+     aaaa
+: a
+: a
+     bacxxx
+: bac
+: bac
+     bbaccxxx
+: bbacc
+: bbacc
+     bbbacccxx
+: bbbaccc
+: bbbaccc
+ /^(a|b\g<1>c)/
+     aaaa
+: a
+: a
+     bacxxx
+: bac
+: bac
+     bbaccxxx
+: bbacc
+: bbacc
+     bbbacccxx
+: bbbaccc
+: bbbaccc
+ /^(a|b\g'1'c)/
+     aaaa
+: a
+: a
+     bacxxx
+: bac
+: bac
+     bbaccxxx
+: bbacc
+: bbacc
+     bbbacccxx
+: bbbaccc
+: bbbaccc
+ /^(a|b\g'-1'c)/
+     aaaa
+: a
+: a
+     bacxxx
+: bac
+: bac
+     bbaccxxx
+: bbacc
+: bbacc
+     bbbacccxx
+: bbbaccc
+: bbbaccc
+ /(^(a|b\g<-1>c))/
+     aaaa
+: a
+: a
+: a
+     bacxxx
+: bac
+: bac
+: bac
+     bbaccxxx
+: bbacc
+: bbacc
+: bbacc
+     bbbacccxx
+: bbbaccc
+: bbbaccc
+: bbbaccc
+ /(?-i:\g<name>)(?i:(?<name>a))/
+     XaaX
+: aa
+: a
+     XAAX
+: AA
+: A
+ /(?i:\g<name>)(?-i:(?<name>a))/
+     XaaX
+: aa
+: a
+     ** Failers
+ No match
+     XAAX
+ No match
+ /(?-i:\g<+1>)(?i:(a))/
+     XaaX
+: aa
+: a
+     XAAX
+: AA
+: A
+ /(?=(?<regex>(?#simplesyntax)\$(?<name>[a-zA-Z_\x{7f}-\x{ff}][a-zA-Z0-9_\x{7f}-\x{ff}]*)(?:\[(?<index>[a-zA-Z0-9_\x{7f}-\x{ff}]+|\$\g<name>)\]|->\g<name>(\(.*?\))?)?|(?#simple syntax withbraces)\$\{(?:\g<name>(?<indices>\[(?:\g<index>|'(?:\\.|[^'\\])*'|"(?:\g<regex>|\\.|[^"\\])*")\])?|\g<complex>|\$\{\g<complex>\})\}|(?#complexsyntax)\{(?<complex>\$(?<segment>\g<name>(\g<indices>*|\(.*?\))?)(?:->\g<segment>)*|\$\g<complex>|\$\{\g<complex>\})\}))\{/
+ /(?<n>a|b|c)\g<n>*/
+    abc
+: abc
+: a
+    accccbbb
+: accccbbb
+: a
+ /^X(?7)(a)(?|(b)|(q)(r)(s))(c)(d)(Y)/
+     XYabcdY
+: XYabcdY
+: a
+: b
+: <unset>
+: <unset>
+: c
+: d
+: Y
+ /(?<=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