summaryrefslogtreecommitdiff
path: root/pcre/testdata/testinput1
diff options
context:
space:
mode:
authorVincent Peyruqueou2023-03-27 11:46:59 +0200
committerVincent Peyruqueou2023-03-27 11:46:59 +0200
commit0916b5f9072f7bd1b7b045ceb07758f9dc097ac2 (patch)
tree2904afe1d5d4d770695f78db5ccd722735a8e67b /pcre/testdata/testinput1
parent5443d6828eaf5cbc7dc4613d9d75b4c192d17730 (diff)
downloadivy-c-master.zip
ivy-c-master.tar.gz
ivy-c-master.tar.bz2
ivy-c-master.tar.xz
Add sources of PCRE and Microsoft Visual Studio solutions to compile the libHEADmaster
Diffstat (limited to 'pcre/testdata/testinput1')
-rw-r--r--pcre/testdata/testinput15763
1 files changed, 5763 insertions, 0 deletions
diff --git a/pcre/testdata/testinput1 b/pcre/testdata/testinput1
new file mode 100644
index 0000000..54bc79c
--- /dev/null
+++ b/pcre/testdata/testinput1
@@ -0,0 +1,5763 @@
+/-- This set of tests is for features that are compatible with all versions of
+ Perl >= 5.10, in non-UTF-8 mode. It should run clean for the 8-bit, 16-bit,
+ and 32-bit PCRE libraries. --/
+
+< forbid 89?=ABCDEFfGILMNPTUWXZ<
+
+/the quick brown fox/
+ the quick brown fox
+ The quick brown FOX
+ What do you know about the quick brown fox?
+ What do you know about THE QUICK BROWN FOX?
+
+/The quick brown fox/i
+ the quick brown fox
+ The quick brown FOX
+ What do you know about the quick brown fox?
+ What do you know about THE QUICK BROWN FOX?
+
+/abcd\t\n\r\f\a\e\071\x3b\$\\\?caxyz/
+ abcd\t\n\r\f\a\e9;\$\\?caxyz
+
+/a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz/
+ abxyzpqrrrabbxyyyypqAzz
+ abxyzpqrrrabbxyyyypqAzz
+ aabxyzpqrrrabbxyyyypqAzz
+ aaabxyzpqrrrabbxyyyypqAzz
+ aaaabxyzpqrrrabbxyyyypqAzz
+ abcxyzpqrrrabbxyyyypqAzz
+ aabcxyzpqrrrabbxyyyypqAzz
+ aaabcxyzpqrrrabbxyyyypAzz
+ aaabcxyzpqrrrabbxyyyypqAzz
+ aaabcxyzpqrrrabbxyyyypqqAzz
+ aaabcxyzpqrrrabbxyyyypqqqAzz
+ aaabcxyzpqrrrabbxyyyypqqqqAzz
+ aaabcxyzpqrrrabbxyyyypqqqqqAzz
+ aaabcxyzpqrrrabbxyyyypqqqqqqAzz
+ aaaabcxyzpqrrrabbxyyyypqAzz
+ abxyzzpqrrrabbxyyyypqAzz
+ aabxyzzzpqrrrabbxyyyypqAzz
+ aaabxyzzzzpqrrrabbxyyyypqAzz
+ aaaabxyzzzzpqrrrabbxyyyypqAzz
+ abcxyzzpqrrrabbxyyyypqAzz
+ aabcxyzzzpqrrrabbxyyyypqAzz
+ aaabcxyzzzzpqrrrabbxyyyypqAzz
+ aaaabcxyzzzzpqrrrabbxyyyypqAzz
+ aaaabcxyzzzzpqrrrabbbxyyyypqAzz
+ aaaabcxyzzzzpqrrrabbbxyyyyypqAzz
+ aaabcxyzpqrrrabbxyyyypABzz
+ aaabcxyzpqrrrabbxyyyypABBzz
+ >>>aaabxyzpqrrrabbxyyyypqAzz
+ >aaaabxyzpqrrrabbxyyyypqAzz
+ >>>>abcxyzpqrrrabbxyyyypqAzz
+ *** Failers
+ abxyzpqrrabbxyyyypqAzz
+ abxyzpqrrrrabbxyyyypqAzz
+ abxyzpqrrrabxyyyypqAzz
+ aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz
+ aaaabcxyzzzzpqrrrabbbxyyypqAzz
+ aaabcxyzpqrrrabbxyyyypqqqqqqqAzz
+
+/^(abc){1,2}zz/
+ abczz
+ abcabczz
+ *** Failers
+ zz
+ abcabcabczz
+ >>abczz
+
+/^(b+?|a){1,2}?c/
+ bc
+ bbc
+ bbbc
+ bac
+ bbac
+ aac
+ abbbbbbbbbbbc
+ bbbbbbbbbbbac
+ *** Failers
+ aaac
+ abbbbbbbbbbbac
+
+/^(b+|a){1,2}c/
+ bc
+ bbc
+ bbbc
+ bac
+ bbac
+ aac
+ abbbbbbbbbbbc
+ bbbbbbbbbbbac
+ *** Failers
+ aaac
+ abbbbbbbbbbbac
+
+/^(b+|a){1,2}?bc/
+ bbc
+
+/^(b*|ba){1,2}?bc/
+ babc
+ bbabc
+ bababc
+ *** Failers
+ bababbc
+ babababc
+
+/^(ba|b*){1,2}?bc/
+ babc
+ bbabc
+ bababc
+ *** Failers
+ bababbc
+ babababc
+
+/^\ca\cA\c[;\c:/
+ \x01\x01\e;z
+
+/^[ab\]cde]/
+ athing
+ bthing
+ ]thing
+ cthing
+ dthing
+ ething
+ *** Failers
+ fthing
+ [thing
+ \\thing
+
+/^[]cde]/
+ ]thing
+ cthing
+ dthing
+ ething
+ *** Failers
+ athing
+ fthing
+
+/^[^ab\]cde]/
+ fthing
+ [thing
+ \\thing
+ *** Failers
+ athing
+ bthing
+ ]thing
+ cthing
+ dthing
+ ething
+
+/^[^]cde]/
+ athing
+ fthing
+ *** Failers
+ ]thing
+ cthing
+ dthing
+ ething
+
+/^\/
+
+
+/^/
+
+
+/^[0-9]+$/
+ 0
+ 1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+ 10
+ 100
+ *** Failers
+ abc
+
+/^.*nter/
+ enter
+ inter
+ uponter
+
+/^xxx[0-9]+$/
+ xxx0
+ xxx1234
+ *** Failers
+ xxx
+
+/^.+[0-9][0-9][0-9]$/
+ x123
+ xx123
+ 123456
+ *** Failers
+ 123
+ x1234
+
+/^.+?[0-9][0-9][0-9]$/
+ x123
+ xx123
+ 123456
+ *** Failers
+ 123
+ x1234
+
+/^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/
+ abc!pqr=apquxz.ixr.zzz.ac.uk
+ *** Failers
+ !pqr=apquxz.ixr.zzz.ac.uk
+ abc!=apquxz.ixr.zzz.ac.uk
+ abc!pqr=apquxz:ixr.zzz.ac.uk
+ abc!pqr=apquxz.ixr.zzz.ac.ukk
+
+/:/
+ Well, we need a colon: somewhere
+ *** Fail if we don't
+
+/([\da-f:]+)$/i
+ 0abc
+ abc
+ fed
+ E
+ ::
+ 5f03:12C0::932e
+ fed def
+ Any old stuff
+ *** Failers
+ 0zzz
+ gzzz
+ fed\x20
+ Any old rubbish
+
+/^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/
+ .1.2.3
+ A.12.123.0
+ *** Failers
+ .1.2.3333
+ 1.2.3
+ 1234.2.3
+
+/^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/
+ 1 IN SOA non-sp1 non-sp2(
+ 1 IN SOA non-sp1 non-sp2 (
+ *** Failers
+ 1IN SOA non-sp1 non-sp2(
+
+/^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/
+ a.
+ Z.
+ 2.
+ ab-c.pq-r.
+ sxk.zzz.ac.uk.
+ x-.y-.
+ *** Failers
+ -abc.peq.
+
+/^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/
+ *.a
+ *.b0-a
+ *.c3-b.c
+ *.c-a.b-c
+ *** Failers
+ *.0
+ *.a-
+ *.a-b.c-
+ *.c-a.0-c
+
+/^(?=ab(de))(abd)(e)/
+ abde
+
+/^(?!(ab)de|x)(abd)(f)/
+ abdf
+
+/^(?=(ab(cd)))(ab)/
+ abcd
+
+/^[\da-f](\.[\da-f])*$/i
+ a.b.c.d
+ A.B.C.D
+ a.b.c.1.2.3.C
+
+/^\".*\"\s*(;.*)?$/
+ \"1234\"
+ \"abcd\" ;
+ \"\" ; rhubarb
+ *** Failers
+ \"1234\" : things
+
+/^$/
+ \
+ *** Failers
+
+/ ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/x
+ ab c
+ *** Failers
+ abc
+ ab cde
+
+/(?x) ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/
+ ab c
+ *** Failers
+ abc
+ ab cde
+
+/^ a\ b[c ]d $/x
+ a bcd
+ a b d
+ *** Failers
+ abcd
+ ab d
+
+/^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$/
+ abcdefhijklm
+
+/^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$/
+ abcdefhijklm
+
+/^[\w][\W][\s][\S][\d][\D][\b][\n][\c]][\022]/
+ a+ Z0+\x08\n\x1d\x12
+
+/^[.^$|()*+?{,}]+/
+ .^\$(*+)|{?,?}
+
+/^a*\w/
+ z
+ az
+ aaaz
+ a
+ aa
+ aaaa
+ a+
+ aa+
+
+/^a*?\w/
+ z
+ az
+ aaaz
+ a
+ aa
+ aaaa
+ a+
+ aa+
+
+/^a+\w/
+ az
+ aaaz
+ aa
+ aaaa
+ aa+
+
+/^a+?\w/
+ az
+ aaaz
+ aa
+ aaaa
+ aa+
+
+/^\d{8}\w{2,}/
+ 1234567890
+ 12345678ab
+ 12345678__
+ *** Failers
+ 1234567
+
+/^[aeiou\d]{4,5}$/
+ uoie
+ 1234
+ 12345
+ aaaaa
+ *** Failers
+ 123456
+
+/^[aeiou\d]{4,5}?/
+ uoie
+ 1234
+ 12345
+ aaaaa
+ 123456
+
+/\A(abc|def)=(\1){2,3}\Z/
+ abc=abcabc
+ def=defdefdef
+ *** Failers
+ abc=defdef
+
+/^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/
+ abcdefghijkcda2
+ abcdefghijkkkkcda2
+
+/(cat(a(ract|tonic)|erpillar)) \1()2(3)/
+ cataract cataract23
+ catatonic catatonic23
+ caterpillar caterpillar23
+
+
+/^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]/
+ From abcd Mon Sep 01 12:33:02 1997
+
+/^From\s+\S+\s+([a-zA-Z]{3}\s+){2}\d{1,2}\s+\d\d:\d\d/
+ From abcd Mon Sep 01 12:33:02 1997
+ From abcd Mon Sep 1 12:33:02 1997
+ *** Failers
+ From abcd Sep 01 12:33:02 1997
+
+/^12.34/s
+ 12\n34
+ 12\r34
+
+/\w+(?=\t)/
+ the quick brown\t fox
+
+/foo(?!bar)(.*)/
+ foobar is foolish see?
+
+/(?:(?!foo)...|^.{0,2})bar(.*)/
+ foobar crowbar etc
+ barrel
+ 2barrel
+ A barrel
+
+/^(\D*)(?=\d)(?!123)/
+ abc456
+ *** Failers
+ abc123
+
+/^1234(?# test newlines
+ inside)/
+ 1234
+
+/^1234 #comment in extended re
+ /x
+ 1234
+
+/#rhubarb
+ abcd/x
+ abcd
+
+/^abcd#rhubarb/x
+ abcd
+
+/^(a)\1{2,3}(.)/
+ aaab
+ aaaab
+ aaaaab
+ aaaaaab
+
+/(?!^)abc/
+ the abc
+ *** Failers
+ abc
+
+/(?=^)abc/
+ abc
+ *** Failers
+ the abc
+
+/^[ab]{1,3}(ab*|b)/
+ aabbbbb
+
+/^[ab]{1,3}?(ab*|b)/
+ aabbbbb
+
+/^[ab]{1,3}?(ab*?|b)/
+ aabbbbb
+
+/^[ab]{1,3}(ab*?|b)/
+ aabbbbb
+
+/ (?: [\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
+/x
+ Alan Other <user\@dom.ain>
+ <user\@dom.ain>
+ user\@dom.ain
+ \"A. Other\" <user.1234\@dom.ain> (a comment)
+ A. Other <user.1234\@dom.ain> (a comment)
+ \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
+ A missing angle <user\@some.where
+ *** Failers
+ The quick brown fox
+
+/[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# 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
+# Atom
+| # or
+" # "
+[^\\\x80-\xff\n\015"] * # normal
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )*
+" # "
+# Quoted string
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+\.
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+# Atom
+| # or
+" # "
+[^\\\x80-\xff\n\015"] * # normal
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )*
+" # "
+# Quoted string
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# additional words
+)*
+@
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+(?:
+\.
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+)*
+# 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
+# Atom
+| # or
+" # "
+[^\\\x80-\xff\n\015"] * # normal
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )*
+" # "
+# Quoted string
+)
+# leading word
+[^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # "normal" atoms and or spaces
+(?:
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+|
+" # "
+[^\\\x80-\xff\n\015"] * # normal
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )*
+" # "
+) # "special" comment or quoted string
+[^()<>@,;:".\\\[\]\x80-\xff\000-\010\012-\037] * # more "normal"
+)*
+<
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# <
+(?:
+@
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+(?:
+\.
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+)*
+(?: ,
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+@
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+(?:
+\.
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+)*
+)* # additional domains
+:
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+)? # 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
+# Atom
+| # or
+" # "
+[^\\\x80-\xff\n\015"] * # normal
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )*
+" # "
+# Quoted string
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+\.
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+# Atom
+| # or
+" # "
+[^\\\x80-\xff\n\015"] * # normal
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015"] * )* # ( special normal* )*
+" # "
+# Quoted string
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# additional words
+)*
+@
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+(?:
+\.
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+(?:
+[^(\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
+\] # ]
+)
+[\040\t]* # Nab whitespace.
+(?:
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: # (
+(?: \\ [^\x80-\xff] |
+\( # (
+[^\\\x80-\xff\n\015()] * # normal*
+(?: \\ [^\x80-\xff] [^\\\x80-\xff\n\015()] * )* # (special normal*)*
+\) # )
+) # special
+[^\\\x80-\xff\n\015()] * # normal*
+)* # )*
+\) # )
+[\040\t]* )* # If comment found, allow more spaces.
+# optional trailing comments
+)*
+# address spec
+> # >
+# name and address
+)
+/x
+ Alan Other <user\@dom.ain>
+ <user\@dom.ain>
+ user\@dom.ain
+ \"A. Other\" <user.1234\@dom.ain> (a comment)
+ A. Other <user.1234\@dom.ain> (a comment)
+ \"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
+ A missing angle <user\@some.where
+ *** Failers
+ The quick brown fox
+
+/abc\0def\00pqr\000xyz\0000AB/
+ abc\0def\00pqr\000xyz\0000AB
+ abc456 abc\0def\00pqr\000xyz\0000ABCDE
+
+/abc\x0def\x00pqr\x000xyz\x0000AB/
+ abc\x0def\x00pqr\x000xyz\x0000AB
+ abc456 abc\x0def\x00pqr\x000xyz\x0000ABCDE
+
+/^[\000-\037]/
+ \0A
+ \01B
+ \037C
+
+/\0*/
+ \0\0\0\0
+
+/A\x0{2,3}Z/
+ The A\x0\x0Z
+ An A\0\x0\0Z
+ *** Failers
+ A\0Z
+ A\0\x0\0\x0Z
+
+/^(cow|)\1(bell)/
+ cowcowbell
+ bell
+ *** Failers
+ cowbell
+
+/^\s/
+ \040abc
+ \x0cabc
+ \nabc
+ \rabc
+ \tabc
+ *** Failers
+ abc
+
+/^a b
+ c/x
+ abc
+
+/^(a|)\1*b/
+ ab
+ aaaab
+ b
+ *** Failers
+ acb
+
+/^(a|)\1+b/
+ aab
+ aaaab
+ b
+ *** Failers
+ ab
+
+/^(a|)\1?b/
+ ab
+ aab
+ b
+ *** Failers
+ acb
+
+/^(a|)\1{2}b/
+ aaab
+ b
+ *** Failers
+ ab
+ aab
+ aaaab
+
+/^(a|)\1{2,3}b/
+ aaab
+ aaaab
+ b
+ *** Failers
+ ab
+ aab
+ aaaaab
+
+/ab{1,3}bc/
+ abbbbc
+ abbbc
+ abbc
+ *** Failers
+ abc
+ abbbbbc
+
+/([^.]*)\.([^:]*):[T ]+(.*)/
+ track1.title:TBlah blah blah
+
+/([^.]*)\.([^:]*):[T ]+(.*)/i
+ track1.title:TBlah blah blah
+
+/([^.]*)\.([^:]*):[t ]+(.*)/i
+ track1.title:TBlah blah blah
+
+/^[W-c]+$/
+ WXY_^abc
+ *** Failers
+ wxy
+
+/^[W-c]+$/i
+ WXY_^abc
+ wxy_^ABC
+
+/^[\x3f-\x5F]+$/i
+ WXY_^abc
+ wxy_^ABC
+
+/^abc$/m
+ abc
+ qqq\nabc
+ abc\nzzz
+ qqq\nabc\nzzz
+
+/^abc$/
+ abc
+ *** Failers
+ qqq\nabc
+ abc\nzzz
+ qqq\nabc\nzzz
+
+/\Aabc\Z/m
+ abc
+ abc\n
+ *** Failers
+ qqq\nabc
+ abc\nzzz
+ qqq\nabc\nzzz
+
+/\A(.)*\Z/s
+ abc\ndef
+
+/\A(.)*\Z/m
+ *** Failers
+ abc\ndef
+
+/(?:b)|(?::+)/
+ b::c
+ c::b
+
+/[-az]+/
+ az-
+ *** Failers
+ b
+
+/[az-]+/
+ za-
+ *** Failers
+ b
+
+/[a\-z]+/
+ a-z
+ *** Failers
+ b
+
+/[a-z]+/
+ abcdxyz
+
+/[\d-]+/
+ 12-34
+ *** Failers
+ aaa
+
+/[\d-z]+/
+ 12-34z
+ *** Failers
+ aaa
+
+/\x5c/
+ \\
+
+/\x20Z/
+ the Zoo
+ *** Failers
+ Zulu
+
+/(abc)\1/i
+ abcabc
+ ABCabc
+ abcABC
+
+/ab{3cd/
+ ab{3cd
+
+/ab{3,cd/
+ ab{3,cd
+
+/ab{3,4a}cd/
+ ab{3,4a}cd
+
+/{4,5a}bc/
+ {4,5a}bc
+
+/abc$/
+ abc
+ abc\n
+ *** Failers
+ abc\ndef
+
+/(abc)\123/
+ abc\x53
+
+/(abc)\223/
+ abc\x93
+
+/(abc)\323/
+ abc\xd3
+
+/(abc)\100/
+ abc\x40
+ abc\100
+
+/(abc)\1000/
+ abc\x400
+ abc\x40\x30
+ abc\1000
+ abc\100\x30
+ abc\100\060
+ abc\100\60
+
+/^A\8B\9C$/
+ A8B9C
+ *** Failers
+ A\08B\09C
+
+/^(A)(B)(C)(D)(E)(F)(G)(H)(I)\8\9$/
+ ABCDEFGHIHI
+
+/^[A\8B\9C]+$/
+ A8B9C
+ *** Failers
+ A8B9C\x00
+
+/(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\12\123/
+ abcdefghijkllS
+
+/(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12\123/
+ abcdefghijk\12S
+
+/ab\idef/
+ abidef
+
+/a{0}bc/
+ bc
+
+/(a|(bc)){0,0}?xyz/
+ xyz
+
+/abc[\10]de/
+ abc\010de
+
+/abc[\1]de/
+ abc\1de
+
+/(abc)[\1]de/
+ abc\1de
+
+/(?s)a.b/
+ a\nb
+
+/^([^a])([^\b])([^c]*)([^d]{3,4})/
+ baNOTccccd
+ baNOTcccd
+ baNOTccd
+ bacccd
+ *** Failers
+ anything
+ b\bc
+ baccd
+
+/[^a]/
+ Abc
+
+/[^a]/i
+ Abc
+
+/[^a]+/
+ AAAaAbc
+
+/[^a]+/i
+ AAAaAbc
+
+/[^a]+/
+ bbb\nccc
+
+/[^k]$/
+ abc
+ *** Failers
+ abk
+
+/[^k]{2,3}$/
+ abc
+ kbc
+ kabc
+ *** Failers
+ abk
+ akb
+ akk
+
+/^\d{8,}\@.+[^k]$/
+ 12345678\@a.b.c.d
+ 123456789\@x.y.z
+ *** Failers
+ 12345678\@x.y.uk
+ 1234567\@a.b.c.d
+
+/(a)\1{8,}/
+ aaaaaaaaa
+ aaaaaaaaaa
+ *** Failers
+ aaaaaaa
+
+/[^a]/
+ aaaabcd
+ aaAabcd
+
+/[^a]/i
+ aaaabcd
+ aaAabcd
+
+/[^az]/
+ aaaabcd
+ aaAabcd
+
+/[^az]/i
+ aaaabcd
+ aaAabcd
+
+/\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\040\041\042\043\044\045\046\047\050\051\052\053\054\055\056\057\060\061\062\063\064\065\066\067\070\071\072\073\074\075\076\077\100\101\102\103\104\105\106\107\110\111\112\113\114\115\116\117\120\121\122\123\124\125\126\127\130\131\132\133\134\135\136\137\140\141\142\143\144\145\146\147\150\151\152\153\154\155\156\157\160\161\162\163\164\165\166\167\170\171\172\173\174\175\176\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377/
+ \000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\040\041\042\043\044\045\046\047\050\051\052\053\054\055\056\057\060\061\062\063\064\065\066\067\070\071\072\073\074\075\076\077\100\101\102\103\104\105\106\107\110\111\112\113\114\115\116\117\120\121\122\123\124\125\126\127\130\131\132\133\134\135\136\137\140\141\142\143\144\145\146\147\150\151\152\153\154\155\156\157\160\161\162\163\164\165\166\167\170\171\172\173\174\175\176\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377
+
+/P[^*]TAIRE[^*]{1,6}?LL/
+ xxxxxxxxxxxPSTAIREISLLxxxxxxxxx
+
+/P[^*]TAIRE[^*]{1,}?LL/
+ xxxxxxxxxxxPSTAIREISLLxxxxxxxxx
+
+/(\.\d\d[1-9]?)\d+/
+ 1.230003938
+ 1.875000282
+ 1.235
+
+/(\.\d\d((?=0)|\d(?=\d)))/
+ 1.230003938
+ 1.875000282
+ *** Failers
+ 1.235
+
+/a(?)b/
+ ab
+
+/\b(foo)\s+(\w+)/i
+ Food is on the foo table
+
+/foo(.*)bar/
+ The food is under the bar in the barn.
+
+/foo(.*?)bar/
+ The food is under the bar in the barn.
+
+/(.*)(\d*)/
+ I have 2 numbers: 53147
+
+/(.*)(\d+)/
+ I have 2 numbers: 53147
+
+/(.*?)(\d*)/
+ I have 2 numbers: 53147
+
+/(.*?)(\d+)/
+ I have 2 numbers: 53147
+
+/(.*)(\d+)$/
+ I have 2 numbers: 53147
+
+/(.*?)(\d+)$/
+ I have 2 numbers: 53147
+
+/(.*)\b(\d+)$/
+ I have 2 numbers: 53147
+
+/(.*\D)(\d+)$/
+ I have 2 numbers: 53147
+
+/^\D*(?!123)/
+ ABC123
+
+/^(\D*)(?=\d)(?!123)/
+ ABC445
+ *** Failers
+ ABC123
+
+/^[W-]46]/
+ W46]789
+ -46]789
+ *** Failers
+ Wall
+ Zebra
+ 42
+ [abcd]
+ ]abcd[
+
+/^[W-\]46]/
+ W46]789
+ Wall
+ Zebra
+ Xylophone
+ 42
+ [abcd]
+ ]abcd[
+ \\backslash
+ *** Failers
+ -46]789
+ well
+
+/\d\d\/\d\d\/\d\d\d\d/
+ 01/01/2000
+
+/word (?:[a-zA-Z0-9]+ ){0,10}otherword/
+ word cat dog elephant mussel cow horse canary baboon snake shark otherword
+ word cat dog elephant mussel cow horse canary baboon snake shark
+
+/word (?:[a-zA-Z0-9]+ ){0,300}otherword/
+ word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
+
+/^(a){0,0}/
+ bcd
+ abc
+ aab
+
+/^(a){0,1}/
+ bcd
+ abc
+ aab
+
+/^(a){0,2}/
+ bcd
+ abc
+ aab
+
+/^(a){0,3}/
+ bcd
+ abc
+ aab
+ aaa
+
+/^(a){0,}/
+ bcd
+ abc
+ aab
+ aaa
+ aaaaaaaa
+
+/^(a){1,1}/
+ bcd
+ abc
+ aab
+
+/^(a){1,2}/
+ bcd
+ abc
+ aab
+
+/^(a){1,3}/
+ bcd
+ abc
+ aab
+ aaa
+
+/^(a){1,}/
+ bcd
+ abc
+ aab
+ aaa
+ aaaaaaaa
+
+/.*\.gif/
+ borfle\nbib.gif\nno
+
+/.{0,}\.gif/
+ borfle\nbib.gif\nno
+
+/.*\.gif/m
+ borfle\nbib.gif\nno
+
+/.*\.gif/s
+ borfle\nbib.gif\nno
+
+/.*\.gif/ms
+ borfle\nbib.gif\nno
+
+/.*$/
+ borfle\nbib.gif\nno
+
+/.*$/m
+ borfle\nbib.gif\nno
+
+/.*$/s
+ borfle\nbib.gif\nno
+
+/.*$/ms
+ borfle\nbib.gif\nno
+
+/.*$/
+ borfle\nbib.gif\nno\n
+
+/.*$/m
+ borfle\nbib.gif\nno\n
+
+/.*$/s
+ borfle\nbib.gif\nno\n
+
+/.*$/ms
+ borfle\nbib.gif\nno\n
+
+/(.*X|^B)/
+ abcde\n1234Xyz
+ BarFoo
+ *** Failers
+ abcde\nBar
+
+/(.*X|^B)/m
+ abcde\n1234Xyz
+ BarFoo
+ abcde\nBar
+
+/(.*X|^B)/s
+ abcde\n1234Xyz
+ BarFoo
+ *** Failers
+ abcde\nBar
+
+/(.*X|^B)/ms
+ abcde\n1234Xyz
+ BarFoo
+ abcde\nBar
+
+/(?s)(.*X|^B)/
+ abcde\n1234Xyz
+ BarFoo
+ *** Failers
+ abcde\nBar
+
+/(?s:.*X|^B)/
+ abcde\n1234Xyz
+ BarFoo
+ *** Failers
+ abcde\nBar
+
+/^.*B/
+ **** Failers
+ abc\nB
+
+/(?s)^.*B/
+ abc\nB
+
+/(?m)^.*B/
+ abc\nB
+
+/(?ms)^.*B/
+ abc\nB
+
+/(?ms)^B/
+ abc\nB
+
+/(?s)B$/
+ B\n
+
+/^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/
+ 123456654321
+
+/^\d\d\d\d\d\d\d\d\d\d\d\d/
+ 123456654321
+
+/^[\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d]/
+ 123456654321
+
+/^[abc]{12}/
+ abcabcabcabc
+
+/^[a-c]{12}/
+ abcabcabcabc
+
+/^(a|b|c){12}/
+ abcabcabcabc
+
+/^[abcdefghijklmnopqrstuvwxy0123456789]/
+ n
+ *** Failers
+ z
+
+/abcde{0,0}/
+ abcd
+ *** Failers
+ abce
+
+/ab[cd]{0,0}e/
+ abe
+ *** Failers
+ abcde
+
+/ab(c){0,0}d/
+ abd
+ *** Failers
+ abcd
+
+/a(b*)/
+ a
+ ab
+ abbbb
+ *** Failers
+ bbbbb
+
+/ab\d{0}e/
+ abe
+ *** Failers
+ ab1e
+
+/"([^\\"]+|\\.)*"/
+ the \"quick\" brown fox
+ \"the \\\"quick\\\" brown fox\"
+
+/.*?/g+
+ abc
+
+/\b/g+
+ abc
+
+/\b/+g
+ abc
+
+//g
+ abc
+
+/<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>/is
+ <TR BGCOLOR='#DBE9E9'><TD align=left valign=top>43.<a href='joblist.cfm?JobID=94 6735&Keyword='>Word Processor<BR>(N-1286)</a></TD><TD align=left valign=top>Lega lstaff.com</TD><TD align=left valign=top>CA - Statewide</TD></TR>
+
+/a[^a]b/
+ acb
+ a\nb
+
+/a.b/
+ acb
+ *** Failers
+ a\nb
+
+/a[^a]b/s
+ acb
+ a\nb
+
+/a.b/s
+ acb
+ a\nb
+
+/^(b+?|a){1,2}?c/
+ bac
+ bbac
+ bbbac
+ bbbbac
+ bbbbbac
+
+/^(b+|a){1,2}?c/
+ bac
+ bbac
+ bbbac
+ bbbbac
+ bbbbbac
+
+/(?!\A)x/m
+ x\nb\n
+ a\bx\n
+
+/\x0{ab}/
+ \0{ab}
+
+/(A|B)*?CD/
+ CD
+
+/(A|B)*CD/
+ CD
+
+/(AB)*?\1/
+ ABABAB
+
+/(AB)*\1/
+ ABABAB
+
+/(?<!bar)foo/
+ foo
+ catfood
+ arfootle
+ rfoosh
+ *** Failers
+ barfoo
+ towbarfoo
+
+/\w{3}(?<!bar)foo/
+ catfood
+ *** Failers
+ foo
+ barfoo
+ towbarfoo
+
+/(?<=(foo)a)bar/
+ fooabar
+ *** Failers
+ bar
+ foobbar
+
+/\Aabc\z/m
+ abc
+ *** Failers
+ abc\n
+ qqq\nabc
+ abc\nzzz
+ qqq\nabc\nzzz
+
+"(?>.*/)foo"
+ /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
+
+"(?>.*/)foo"
+ /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo
+
+/(?>(\.\d\d[1-9]?))\d+/
+ 1.230003938
+ 1.875000282
+ *** Failers
+ 1.235
+
+/^((?>\w+)|(?>\s+))*$/
+ now is the time for all good men to come to the aid of the party
+ *** Failers
+ this is not a line with only words and spaces!
+
+/(\d+)(\w)/
+ 12345a
+ 12345+
+
+/((?>\d+))(\w)/
+ 12345a
+ *** Failers
+ 12345+
+
+/(?>a+)b/
+ aaab
+
+/((?>a+)b)/
+ aaab
+
+/(?>(a+))b/
+ aaab
+
+/(?>b)+/
+ aaabbbccc
+
+/(?>a+|b+|c+)*c/
+ aaabbbbccccd
+
+/((?>[^()]+)|\([^()]*\))+/
+ ((abc(ade)ufh()()x
+
+/\(((?>[^()]+)|\([^()]+\))+\)/
+ (abc)
+ (abc(def)xyz)
+ *** Failers
+ ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+/a(?-i)b/i
+ ab
+ Ab
+ *** Failers
+ aB
+ AB
+
+/(a (?x)b c)d e/
+ a bcd e
+ *** Failers
+ a b cd e
+ abcd e
+ a bcde
+
+/(a b(?x)c d (?-x)e f)/
+ a bcde f
+ *** Failers
+ abcdef
+
+/(a(?i)b)c/
+ abc
+ aBc
+ *** Failers
+ abC
+ aBC
+ Abc
+ ABc
+ ABC
+ AbC
+
+/a(?i:b)c/
+ abc
+ aBc
+ *** Failers
+ ABC
+ abC
+ aBC
+
+/a(?i:b)*c/
+ aBc
+ aBBc
+ *** Failers
+ aBC
+ aBBC
+
+/a(?=b(?i)c)\w\wd/
+ abcd
+ abCd
+ *** Failers
+ aBCd
+ abcD
+
+/(?s-i:more.*than).*million/i
+ more than million
+ more than MILLION
+ more \n than Million
+ *** Failers
+ MORE THAN MILLION
+ more \n than \n million
+
+/(?:(?s-i)more.*than).*million/i
+ more than million
+ more than MILLION
+ more \n than Million
+ *** Failers
+ MORE THAN MILLION
+ more \n than \n million
+
+/(?>a(?i)b+)+c/
+ abc
+ aBbc
+ aBBc
+ *** Failers
+ Abc
+ abAb
+ abbC
+
+/(?=a(?i)b)\w\wc/
+ abc
+ aBc
+ *** Failers
+ Ab
+ abC
+ aBC
+
+/(?<=a(?i)b)(\w\w)c/
+ abxxc
+ aBxxc
+ *** Failers
+ Abxxc
+ ABxxc
+ abxxC
+
+/(?:(a)|b)(?(1)A|B)/
+ aA
+ bB
+ *** Failers
+ aB
+ bA
+
+/^(a)?(?(1)a|b)+$/
+ aa
+ b
+ bb
+ *** Failers
+ ab
+
+/^(?(?=abc)\w{3}:|\d\d)$/
+ abc:
+ 12
+ *** Failers
+ 123
+ xyz
+
+/^(?(?!abc)\d\d|\w{3}:)$/
+ abc:
+ 12
+ *** Failers
+ 123
+ xyz
+
+/(?(?<=foo)bar|cat)/
+ foobar
+ cat
+ fcat
+ focat
+ *** Failers
+ foocat
+
+/(?(?<!foo)cat|bar)/
+ foobar
+ cat
+ fcat
+ focat
+ *** Failers
+ foocat
+
+/( \( )? [^()]+ (?(1) \) |) /x
+ abcd
+ (abcd)
+ the quick (abcd) fox
+ (abcd
+
+/( \( )? [^()]+ (?(1) \) ) /x
+ abcd
+ (abcd)
+ the quick (abcd) fox
+ (abcd
+
+/^(?(2)a|(1)(2))+$/
+ 12
+ 12a
+ 12aa
+ *** Failers
+ 1234
+
+/((?i)blah)\s+\1/
+ blah blah
+ BLAH BLAH
+ Blah Blah
+ blaH blaH
+ *** Failers
+ blah BLAH
+ Blah blah
+ blaH blah
+
+/((?i)blah)\s+(?i:\1)/
+ blah blah
+ BLAH BLAH
+ Blah Blah
+ blaH blaH
+ blah BLAH
+ Blah blah
+ blaH blah
+
+/(?>a*)*/
+ a
+ aa
+ aaaa
+
+/(abc|)+/
+ abc
+ abcabc
+ abcabcabc
+ xyz
+
+/([a]*)*/
+ a
+ aaaaa
+
+/([ab]*)*/
+ a
+ b
+ ababab
+ aaaabcde
+ bbbb
+
+/([^a]*)*/
+ b
+ bbbb
+ aaa
+
+/([^ab]*)*/
+ cccc
+ abab
+
+/([a]*?)*/
+ a
+ aaaa
+
+/([ab]*?)*/
+ a
+ b
+ abab
+ baba
+
+/([^a]*?)*/
+ b
+ bbbb
+ aaa
+
+/([^ab]*?)*/
+ c
+ cccc
+ baba
+
+/(?>a*)*/
+ a
+ aaabcde
+
+/((?>a*))*/
+ aaaaa
+ aabbaa
+
+/((?>a*?))*/
+ aaaaa
+ aabbaa
+
+/(?(?=[^a-z]+[a-z]) \d{2}-[a-z]{3}-\d{2} | \d{2}-\d{2}-\d{2} ) /x
+ 12-sep-98
+ 12-09-98
+ *** Failers
+ sep-12-98
+
+/(?<=(foo))bar\1/
+ foobarfoo
+ foobarfootling
+ *** Failers
+ foobar
+ barfoo
+
+/(?i:saturday|sunday)/
+ saturday
+ sunday
+ Saturday
+ Sunday
+ SATURDAY
+ SUNDAY
+ SunDay
+
+/(a(?i)bc|BB)x/
+ abcx
+ aBCx
+ bbx
+ BBx
+ *** Failers
+ abcX
+ aBCX
+ bbX
+ BBX
+
+/^([ab](?i)[cd]|[ef])/
+ ac
+ aC
+ bD
+ elephant
+ Europe
+ frog
+ France
+ *** Failers
+ Africa
+
+/^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/
+ ab
+ aBd
+ xy
+ xY
+ zebra
+ Zambesi
+ *** Failers
+ aCD
+ XY
+
+/(?<=foo\n)^bar/m
+ foo\nbar
+ *** Failers
+ bar
+ baz\nbar
+
+/(?<=(?<!foo)bar)baz/
+ barbaz
+ barbarbaz
+ koobarbaz
+ *** Failers
+ baz
+ foobarbaz
+
+/The cases of aaaa and aaaaaa are missed out below because Perl does things/
+/differently. We know that odd, and maybe incorrect, things happen with/
+/recursive references in Perl, as far as 5.11.3 - see some stuff in test #2./
+
+/^(a\1?){4}$/
+ a
+ aa
+ aaa
+ aaaaa
+ aaaaaaa
+ aaaaaaaa
+ aaaaaaaaa
+ aaaaaaaaaa
+ aaaaaaaaaaa
+ aaaaaaaaaaaa
+ aaaaaaaaaaaaa
+ aaaaaaaaaaaaaa
+ aaaaaaaaaaaaaaa
+ aaaaaaaaaaaaaaaa
+
+/^(a\1?)(a\1?)(a\2?)(a\3?)$/
+ a
+ aa
+ aaa
+ aaaa
+ aaaaa
+ aaaaaa
+ aaaaaaa
+ aaaaaaaa
+ aaaaaaaaa
+ aaaaaaaaaa
+ aaaaaaaaaaa
+ aaaaaaaaaaaa
+ aaaaaaaaaaaaa
+ aaaaaaaaaaaaaa
+ aaaaaaaaaaaaaaa
+ aaaaaaaaaaaaaaaa
+
+/The following tests are taken from the Perl 5.005 test suite; some of them/
+/are compatible with 5.004, but I'd rather not have to sort them out./
+
+/abc/
+ abc
+ xabcy
+ ababc
+ *** Failers
+ xbc
+ axc
+ abx
+
+/ab*c/
+ abc
+
+/ab*bc/
+ abc
+ abbc
+ abbbbc
+
+/.{1}/
+ abbbbc
+
+/.{3,4}/
+ abbbbc
+
+/ab{0,}bc/
+ abbbbc
+
+/ab+bc/
+ abbc
+ *** Failers
+ abc
+ abq
+
+/ab{1,}bc/
+
+/ab+bc/
+ abbbbc
+
+/ab{1,}bc/
+ abbbbc
+
+/ab{1,3}bc/
+ abbbbc
+
+/ab{3,4}bc/
+ abbbbc
+
+/ab{4,5}bc/
+ *** Failers
+ abq
+ abbbbc
+
+/ab?bc/
+ abbc
+ abc
+
+/ab{0,1}bc/
+ abc
+
+/ab?bc/
+
+/ab?c/
+ abc
+
+/ab{0,1}c/
+ abc
+
+/^abc$/
+ abc
+ *** Failers
+ abbbbc
+ abcc
+
+/^abc/
+ abcc
+
+/^abc$/
+
+/abc$/
+ aabc
+ *** Failers
+ aabc
+ aabcd
+
+/^/
+ abc
+
+/$/
+ abc
+
+/a.c/
+ abc
+ axc
+
+/a.*c/
+ axyzc
+
+/a[bc]d/
+ abd
+ *** Failers
+ axyzd
+ abc
+
+/a[b-d]e/
+ ace
+
+/a[b-d]/
+ aac
+
+/a[-b]/
+ a-
+
+/a[b-]/
+ a-
+
+/a]/
+ a]
+
+/a[]]b/
+ a]b
+
+/a[^bc]d/
+ aed
+ *** Failers
+ abd
+ abd
+
+/a[^-b]c/
+ adc
+
+/a[^]b]c/
+ adc
+ *** Failers
+ a-c
+ a]c
+
+/\ba\b/
+ a-
+ -a
+ -a-
+
+/\by\b/
+ *** Failers
+ xy
+ yz
+ xyz
+
+/\Ba\B/
+ *** Failers
+ a-
+ -a
+ -a-
+
+/\By\b/
+ xy
+
+/\by\B/
+ yz
+
+/\By\B/
+ xyz
+
+/\w/
+ a
+
+/\W/
+ -
+ *** Failers
+ -
+ a
+
+/a\sb/
+ a b
+
+/a\Sb/
+ a-b
+ *** Failers
+ a-b
+ a b
+
+/\d/
+ 1
+
+/\D/
+ -
+ *** Failers
+ -
+ 1
+
+/[\w]/
+ a
+
+/[\W]/
+ -
+ *** Failers
+ -
+ a
+
+/a[\s]b/
+ a b
+
+/a[\S]b/
+ a-b
+ *** Failers
+ a-b
+ a b
+
+/[\d]/
+ 1
+
+/[\D]/
+ -
+ *** Failers
+ -
+ 1
+
+/ab|cd/
+ abc
+ abcd
+
+/()ef/
+ def
+
+/$b/
+
+/a\(b/
+ a(b
+
+/a\(*b/
+ ab
+ a((b
+
+/a\\b/
+ a\b
+
+/((a))/
+ abc
+
+/(a)b(c)/
+ abc
+
+/a+b+c/
+ aabbabc
+
+/a{1,}b{1,}c/
+ aabbabc
+
+/a.+?c/
+ abcabc
+
+/(a+|b)*/
+ ab
+
+/(a+|b){0,}/
+ ab
+
+/(a+|b)+/
+ ab
+
+/(a+|b){1,}/
+ ab
+
+/(a+|b)?/
+ ab
+
+/(a+|b){0,1}/
+ ab
+
+/[^ab]*/
+ cde
+
+/abc/
+ *** Failers
+ b
+
+
+/a*/
+
+
+/([abc])*d/
+ abbbcd
+
+/([abc])*bcd/
+ abcd
+
+/a|b|c|d|e/
+ e
+
+/(a|b|c|d|e)f/
+ ef
+
+/abcd*efg/
+ abcdefg
+
+/ab*/
+ xabyabbbz
+ xayabbbz
+
+/(ab|cd)e/
+ abcde
+
+/[abhgefdc]ij/
+ hij
+
+/^(ab|cd)e/
+
+/(abc|)ef/
+ abcdef
+
+/(a|b)c*d/
+ abcd
+
+/(ab|ab*)bc/
+ abc
+
+/a([bc]*)c*/
+ abc
+
+/a([bc]*)(c*d)/
+ abcd
+
+/a([bc]+)(c*d)/
+ abcd
+
+/a([bc]*)(c+d)/
+ abcd
+
+/a[bcd]*dcdcde/
+ adcdcde
+
+/a[bcd]+dcdcde/
+ *** Failers
+ abcde
+ adcdcde
+
+/(ab|a)b*c/
+ abc
+
+/((a)(b)c)(d)/
+ abcd
+
+/[a-zA-Z_][a-zA-Z0-9_]*/
+ alpha
+
+/^a(bc+|b[eh])g|.h$/
+ abh
+
+/(bc+d$|ef*g.|h?i(j|k))/
+ effgz
+ ij
+ reffgz
+ *** Failers
+ effg
+ bcdd
+
+/((((((((((a))))))))))/
+ a
+
+/((((((((((a))))))))))\10/
+ aa
+
+/(((((((((a)))))))))/
+ a
+
+/multiple words of text/
+ *** Failers
+ aa
+ uh-uh
+
+/multiple words/
+ multiple words, yeah
+
+/(.*)c(.*)/
+ abcde
+
+/\((.*), (.*)\)/
+ (a, b)
+
+/[k]/
+
+/abcd/
+ abcd
+
+/a(bc)d/
+ abcd
+
+/a[-]?c/
+ ac
+
+/(abc)\1/
+ abcabc
+
+/([a-c]*)\1/
+ abcabc
+
+/(a)|\1/
+ a
+ *** Failers
+ ab
+ x
+
+/(([a-c])b*?\2)*/
+ ababbbcbc
+
+/(([a-c])b*?\2){3}/
+ ababbbcbc
+
+/((\3|b)\2(a)x)+/
+ aaaxabaxbaaxbbax
+
+/((\3|b)\2(a)){2,}/
+ bbaababbabaaaaabbaaaabba
+
+/abc/i
+ ABC
+ XABCY
+ ABABC
+ *** Failers
+ aaxabxbaxbbx
+ XBC
+ AXC
+ ABX
+
+/ab*c/i
+ ABC
+
+/ab*bc/i
+ ABC
+ ABBC
+
+/ab*?bc/i
+ ABBBBC
+
+/ab{0,}?bc/i
+ ABBBBC
+
+/ab+?bc/i
+ ABBC
+
+/ab+bc/i
+ *** Failers
+ ABC
+ ABQ
+
+/ab{1,}bc/i
+
+/ab+bc/i
+ ABBBBC
+
+/ab{1,}?bc/i
+ ABBBBC
+
+/ab{1,3}?bc/i
+ ABBBBC
+
+/ab{3,4}?bc/i
+ ABBBBC
+
+/ab{4,5}?bc/i
+ *** Failers
+ ABQ
+ ABBBBC
+
+/ab??bc/i
+ ABBC
+ ABC
+
+/ab{0,1}?bc/i
+ ABC
+
+/ab??bc/i
+
+/ab??c/i
+ ABC
+
+/ab{0,1}?c/i
+ ABC
+
+/^abc$/i
+ ABC
+ *** Failers
+ ABBBBC
+ ABCC
+
+/^abc/i
+ ABCC
+
+/^abc$/i
+
+/abc$/i
+ AABC
+
+/^/i
+ ABC
+
+/$/i
+ ABC
+
+/a.c/i
+ ABC
+ AXC
+
+/a.*?c/i
+ AXYZC
+
+/a.*c/i
+ *** Failers
+ AABC
+ AXYZD
+
+/a[bc]d/i
+ ABD
+
+/a[b-d]e/i
+ ACE
+ *** Failers
+ ABC
+ ABD
+
+/a[b-d]/i
+ AAC
+
+/a[-b]/i
+ A-
+
+/a[b-]/i
+ A-
+
+/a]/i
+ A]
+
+/a[]]b/i
+ A]B
+
+/a[^bc]d/i
+ AED
+
+/a[^-b]c/i
+ ADC
+ *** Failers
+ ABD
+ A-C
+
+/a[^]b]c/i
+ ADC
+
+/ab|cd/i
+ ABC
+ ABCD
+
+/()ef/i
+ DEF
+
+/$b/i
+ *** Failers
+ A]C
+ B
+
+/a\(b/i
+ A(B
+
+/a\(*b/i
+ AB
+ A((B
+
+/a\\b/i
+ A\B
+
+/((a))/i
+ ABC
+
+/(a)b(c)/i
+ ABC
+
+/a+b+c/i
+ AABBABC
+
+/a{1,}b{1,}c/i
+ AABBABC
+
+/a.+?c/i
+ ABCABC
+
+/a.*?c/i
+ ABCABC
+
+/a.{0,5}?c/i
+ ABCABC
+
+/(a+|b)*/i
+ AB
+
+/(a+|b){0,}/i
+ AB
+
+/(a+|b)+/i
+ AB
+
+/(a+|b){1,}/i
+ AB
+
+/(a+|b)?/i
+ AB
+
+/(a+|b){0,1}/i
+ AB
+
+/(a+|b){0,1}?/i
+ AB
+
+/[^ab]*/i
+ CDE
+
+/abc/i
+
+/a*/i
+
+
+/([abc])*d/i
+ ABBBCD
+
+/([abc])*bcd/i
+ ABCD
+
+/a|b|c|d|e/i
+ E
+
+/(a|b|c|d|e)f/i
+ EF
+
+/abcd*efg/i
+ ABCDEFG
+
+/ab*/i
+ XABYABBBZ
+ XAYABBBZ
+
+/(ab|cd)e/i
+ ABCDE
+
+/[abhgefdc]ij/i
+ HIJ
+
+/^(ab|cd)e/i
+ ABCDE
+
+/(abc|)ef/i
+ ABCDEF
+
+/(a|b)c*d/i
+ ABCD
+
+/(ab|ab*)bc/i
+ ABC
+
+/a([bc]*)c*/i
+ ABC
+
+/a([bc]*)(c*d)/i
+ ABCD
+
+/a([bc]+)(c*d)/i
+ ABCD
+
+/a([bc]*)(c+d)/i
+ ABCD
+
+/a[bcd]*dcdcde/i
+ ADCDCDE
+
+/a[bcd]+dcdcde/i
+
+/(ab|a)b*c/i
+ ABC
+
+/((a)(b)c)(d)/i
+ ABCD
+
+/[a-zA-Z_][a-zA-Z0-9_]*/i
+ ALPHA
+
+/^a(bc+|b[eh])g|.h$/i
+ ABH
+
+/(bc+d$|ef*g.|h?i(j|k))/i
+ EFFGZ
+ IJ
+ REFFGZ
+ *** Failers
+ ADCDCDE
+ EFFG
+ BCDD
+
+/((((((((((a))))))))))/i
+ A
+
+/((((((((((a))))))))))\10/i
+ AA
+
+/(((((((((a)))))))))/i
+ A
+
+/(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))/i
+ A
+
+/(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/i
+ C
+
+/multiple words of text/i
+ *** Failers
+ AA
+ UH-UH
+
+/multiple words/i
+ MULTIPLE WORDS, YEAH
+
+/(.*)c(.*)/i
+ ABCDE
+
+/\((.*), (.*)\)/i
+ (A, B)
+
+/[k]/i
+
+/abcd/i
+ ABCD
+
+/a(bc)d/i
+ ABCD
+
+/a[-]?c/i
+ AC
+
+/(abc)\1/i
+ ABCABC
+
+/([a-c]*)\1/i
+ ABCABC
+
+/a(?!b)./
+ abad
+
+/a(?=d)./
+ abad
+
+/a(?=c|d)./
+ abad
+
+/a(?:b|c|d)(.)/
+ ace
+
+/a(?:b|c|d)*(.)/
+ ace
+
+/a(?:b|c|d)+?(.)/
+ ace
+ acdbcdbe
+
+/a(?:b|c|d)+(.)/
+ acdbcdbe
+
+/a(?:b|c|d){2}(.)/
+ acdbcdbe
+
+/a(?:b|c|d){4,5}(.)/
+ acdbcdbe
+
+/a(?:b|c|d){4,5}?(.)/
+ acdbcdbe
+
+/((foo)|(bar))*/
+ foobar
+
+/a(?:b|c|d){6,7}(.)/
+ acdbcdbe
+
+/a(?:b|c|d){6,7}?(.)/
+ acdbcdbe
+
+/a(?:b|c|d){5,6}(.)/
+ acdbcdbe
+
+/a(?:b|c|d){5,6}?(.)/
+ acdbcdbe
+
+/a(?:b|c|d){5,7}(.)/
+ acdbcdbe
+
+/a(?:b|c|d){5,7}?(.)/
+ acdbcdbe
+
+/a(?:b|(c|e){1,2}?|d)+?(.)/
+ ace
+
+/^(.+)?B/
+ AB
+
+/^([^a-z])|(\^)$/
+ .
+
+/^[<>]&/
+ <&OUT
+
+/^(a\1?){4}$/
+ aaaaaaaaaa
+ *** Failers
+ AB
+ aaaaaaaaa
+ aaaaaaaaaaa
+
+/^(a(?(1)\1)){4}$/
+ aaaaaaaaaa
+ *** Failers
+ aaaaaaaaa
+ aaaaaaaaaaa
+
+/(?:(f)(o)(o)|(b)(a)(r))*/
+ foobar
+
+/(?<=a)b/
+ ab
+ *** Failers
+ cb
+ b
+
+/(?<!c)b/
+ ab
+ b
+ b
+
+/(?:..)*a/
+ aba
+
+/(?:..)*?a/
+ aba
+
+/^(?:b|a(?=(.)))*\1/
+ abc
+
+/^(){3,5}/
+ abc
+
+/^(a+)*ax/
+ aax
+
+/^((a|b)+)*ax/
+ aax
+
+/^((a|bc)+)*ax/
+ aax
+
+/(a|x)*ab/
+ cab
+
+/(a)*ab/
+ cab
+
+/(?:(?i)a)b/
+ ab
+
+/((?i)a)b/
+ ab
+
+/(?:(?i)a)b/
+ Ab
+
+/((?i)a)b/
+ Ab
+
+/(?:(?i)a)b/
+ *** Failers
+ cb
+ aB
+
+/((?i)a)b/
+
+/(?i:a)b/
+ ab
+
+/((?i:a))b/
+ ab
+
+/(?i:a)b/
+ Ab
+
+/((?i:a))b/
+ Ab
+
+/(?i:a)b/
+ *** Failers
+ aB
+ aB
+
+/((?i:a))b/
+
+/(?:(?-i)a)b/i
+ ab
+
+/((?-i)a)b/i
+ ab
+
+/(?:(?-i)a)b/i
+ aB
+
+/((?-i)a)b/i
+ aB
+
+/(?:(?-i)a)b/i
+ *** Failers
+ aB
+ Ab
+
+/((?-i)a)b/i
+
+/(?:(?-i)a)b/i
+ aB
+
+/((?-i)a)b/i
+ aB
+
+/(?:(?-i)a)b/i
+ *** Failers
+ Ab
+ AB
+
+/((?-i)a)b/i
+
+/(?-i:a)b/i
+ ab
+
+/((?-i:a))b/i
+ ab
+
+/(?-i:a)b/i
+ aB
+
+/((?-i:a))b/i
+ aB
+
+/(?-i:a)b/i
+ *** Failers
+ AB
+ Ab
+
+/((?-i:a))b/i
+
+/(?-i:a)b/i
+ aB
+
+/((?-i:a))b/i
+ aB
+
+/(?-i:a)b/i
+ *** Failers
+ Ab
+ AB
+
+/((?-i:a))b/i
+
+/((?-i:a.))b/i
+ *** Failers
+ AB
+ a\nB
+
+/((?s-i:a.))b/i
+ a\nB
+
+/(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))/
+ cabbbb
+
+/(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/
+ caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
+
+/(ab)\d\1/i
+ Ab4ab
+ ab4Ab
+
+/foo\w*\d{4}baz/
+ foobar1234baz
+
+/x(~~)*(?:(?:F)?)?/
+ x~~
+
+/^a(?#xxx){3}c/
+ aaac
+
+/^a (?#xxx) (?#yyy) {3}c/x
+ aaac
+
+/(?<![cd])b/
+ *** Failers
+ B\nB
+ dbcb
+
+/(?<![cd])[ab]/
+ dbaacb
+
+/(?<!(c|d))b/
+
+/(?<!(c|d))[ab]/
+ dbaacb
+
+/(?<!cd)[ab]/
+ cdaccb
+
+/^(?:a?b?)*$/
+ \
+ a
+ ab
+ aaa
+ *** Failers
+ dbcb
+ a--
+ aa--
+
+/((?s)^a(.))((?m)^b$)/
+ a\nb\nc\n
+
+/((?m)^b$)/
+ a\nb\nc\n
+
+/(?m)^b/
+ a\nb\n
+
+/(?m)^(b)/
+ a\nb\n
+
+/((?m)^b)/
+ a\nb\n
+
+/\n((?m)^b)/
+ a\nb\n
+
+/((?s).)c(?!.)/
+ a\nb\nc\n
+ a\nb\nc\n
+
+/((?s)b.)c(?!.)/
+ a\nb\nc\n
+ a\nb\nc\n
+
+/^b/
+
+/()^b/
+ *** Failers
+ a\nb\nc\n
+ a\nb\nc\n
+
+/((?m)^b)/
+ a\nb\nc\n
+
+/(x)?(?(1)a|b)/
+ *** Failers
+ a
+ a
+
+/(x)?(?(1)b|a)/
+ a
+
+/()?(?(1)b|a)/
+ a
+
+/()(?(1)b|a)/
+
+/()?(?(1)a|b)/
+ a
+
+/^(\()?blah(?(1)(\)))$/
+ (blah)
+ blah
+ *** Failers
+ a
+ blah)
+ (blah
+
+/^(\(+)?blah(?(1)(\)))$/
+ (blah)
+ blah
+ *** Failers
+ blah)
+ (blah
+
+/(?(?!a)a|b)/
+
+/(?(?!a)b|a)/
+ a
+
+/(?(?=a)b|a)/
+ *** Failers
+ a
+ a
+
+/(?(?=a)a|b)/
+ a
+
+/(?=(a+?))(\1ab)/
+ aaab
+
+/^(?=(a+?))\1ab/
+
+/(\w+:)+/
+ one:
+
+/$(?<=^(a))/
+ a
+
+/(?=(a+?))(\1ab)/
+ aaab
+
+/^(?=(a+?))\1ab/
+ *** Failers
+ aaab
+ aaab
+
+/([\w:]+::)?(\w+)$/
+ abcd
+ xy:z:::abcd
+
+/^[^bcd]*(c+)/
+ aexycd
+
+/(a*)b+/
+ caab
+
+/([\w:]+::)?(\w+)$/
+ abcd
+ xy:z:::abcd
+ *** Failers
+ abcd:
+ abcd:
+
+/^[^bcd]*(c+)/
+ aexycd
+
+/(>a+)ab/
+
+/(?>a+)b/
+ aaab
+
+/([[:]+)/
+ a:[b]:
+
+/([[=]+)/
+ a=[b]=
+
+/([[.]+)/
+ a.[b].
+
+/((?>a+)b)/
+ aaab
+
+/(?>(a+))b/
+ aaab
+
+/((?>[^()]+)|\([^()]*\))+/
+ ((abc(ade)ufh()()x
+
+/a\Z/
+ *** Failers
+ aaab
+ a\nb\n
+
+/b\Z/
+ a\nb\n
+
+/b\z/
+
+/b\Z/
+ a\nb
+
+/b\z/
+ a\nb
+ *** Failers
+
+/^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/
+ a
+ abc
+ a-b
+ 0-9
+ a.b
+ 5.6.7
+ the.quick.brown.fox
+ a100.b200.300c
+ 12-ab.1245
+ *** Failers
+ \
+ .a
+ -a
+ a-
+ a.
+ a_b
+ a.-
+ a..
+ ab..bc
+ the.quick.brown.fox-
+ the.quick.brown.fox.
+ the.quick.brown.fox_
+ the.quick.brown.fox+
+
+/(?>.*)(?<=(abcd|wxyz))/
+ alphabetabcd
+ endingwxyz
+ *** Failers
+ a rather long string that doesn't end with one of them
+
+/word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/
+ word cat dog elephant mussel cow horse canary baboon snake shark otherword
+ word cat dog elephant mussel cow horse canary baboon snake shark
+
+/word (?>[a-zA-Z0-9]+ ){0,30}otherword/
+ word cat dog elephant mussel cow horse canary baboon snake shark the quick brown fox and the lazy dog and several other words getting close to thirty by now I hope
+
+/(?<=\d{3}(?!999))foo/
+ 999foo
+ 123999foo
+ *** Failers
+ 123abcfoo
+
+/(?<=(?!...999)\d{3})foo/
+ 999foo
+ 123999foo
+ *** Failers
+ 123abcfoo
+
+/(?<=\d{3}(?!999)...)foo/
+ 123abcfoo
+ 123456foo
+ *** Failers
+ 123999foo
+
+/(?<=\d{3}...)(?<!999)foo/
+ 123abcfoo
+ 123456foo
+ *** Failers
+ 123999foo
+
+/<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
+/isx
+ <a href=abcd xyz
+ <a href=\"abcd xyz pqr\" cats
+ <a href=\'abcd xyz pqr\' cats
+
+/<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
+/isx
+ <a href=abcd xyz
+ <a href=\"abcd xyz pqr\" cats
+ <a href = \'abcd xyz pqr\' cats
+
+/<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
+/isx
+ <a href=abcd xyz
+ <a href=\"abcd xyz pqr\" cats
+ <a href = \'abcd xyz pqr\' cats
+
+/((Z)+|A)*/
+ ZABCDEFG
+
+/(Z()|A)*/
+ ZABCDEFG
+
+/(Z(())|A)*/
+ ZABCDEFG
+
+/((?>Z)+|A)*/
+ ZABCDEFG
+
+/((?>)+|A)*/
+ ZABCDEFG
+
+/a*/g
+ abbab
+
+/^[\d-a]/
+ abcde
+ -things
+ 0digit
+ *** Failers
+ bcdef
+
+/[[:space:]]+/
+ > \x09\x0a\x0c\x0d\x0b<
+
+/[[:blank:]]+/
+ > \x09\x0a\x0c\x0d\x0b<
+
+/[\s]+/
+ > \x09\x0a\x0c\x0d\x0b<
+
+/\s+/
+ > \x09\x0a\x0c\x0d\x0b<
+
+/a b/x
+ ab
+
+/(?!\A)x/m
+ a\nxb\n
+
+/(?!^)x/m
+ a\nxb\n
+
+/abc\Qabc\Eabc/
+ abcabcabc
+
+/abc\Q(*+|\Eabc/
+ abc(*+|abc
+
+/ abc\Q abc\Eabc/x
+ abc abcabc
+ *** Failers
+ abcabcabc
+
+/abc#comment
+ \Q#not comment
+ literal\E/x
+ abc#not comment\n literal
+
+/abc#comment
+ \Q#not comment
+ literal/x
+ abc#not comment\n literal
+
+/abc#comment
+ \Q#not comment
+ literal\E #more comment
+ /x
+ abc#not comment\n literal
+
+/abc#comment
+ \Q#not comment
+ literal\E #more comment/x
+ abc#not comment\n literal
+
+/\Qabc\$xyz\E/
+ abc\\\$xyz
+
+/\Qabc\E\$\Qxyz\E/
+ abc\$xyz
+
+/\Gabc/
+ abc
+ *** Failers
+ xyzabc
+
+/\Gabc./g
+ abc1abc2xyzabc3
+
+/abc./g
+ abc1abc2xyzabc3
+
+/a(?x: b c )d/
+ XabcdY
+ *** Failers
+ Xa b c d Y
+
+/((?x)x y z | a b c)/
+ XabcY
+ AxyzB
+
+/(?i)AB(?-i)C/
+ XabCY
+ *** Failers
+ XabcY
+
+/((?i)AB(?-i)C|D)E/
+ abCE
+ DE
+ *** Failers
+ abcE
+ abCe
+ dE
+ De
+
+/(.*)\d+\1/
+ abc123abc
+ abc123bc
+
+/(.*)\d+\1/s
+ abc123abc
+ abc123bc
+
+/((.*))\d+\1/
+ abc123abc
+ abc123bc
+
+/-- This tests for an IPv6 address in the form where it can have up to
+ eight components, one and only one of which is empty. This must be
+ an internal component. --/
+
+/^(?!:) # 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
+ /xi
+ a123::a123
+ a123:b342::abcd
+ a123:b342::324e:abcd
+ a123:ddde:b342::324e:abcd
+ a123:ddde:b342::324e:dcba:abcd
+ a123:ddde:9999:b342::324e:dcba:abcd
+ *** Failers
+ 1:2:3:4:5:6:7:8
+ a123:bce:ddde:9999:b342::324e:dcba:abcd
+ a123::9999:b342::324e:dcba:abcd
+ abcde:2:3:4:5:6:7:8
+ ::1
+ abcd:fee0:123::
+ :1
+ 1:
+
+/[z\Qa-d]\E]/
+ z
+ a
+ -
+ d
+ ]
+ *** Failers
+ b
+
+/[\z\C]/
+ z
+ C
+
+/\M/
+ M
+
+/(a+)*b/
+ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+/(?i)reg(?:ul(?:[a]|ae)r|ex)/
+ REGular
+ regulaer
+ Regex
+ regulr
+
+/[--]+/
+
+
+
+
+
+/(?<=Z)X./
+ \x84XAZXB
+
+/ab cd (?x) de fg/
+ ab cd defg
+
+/ab cd(?x) de fg/
+ ab cddefg
+ ** Failers
+ abcddefg
+
+/(?<![^f]oo)(bar)/
+ foobarX
+ ** Failers
+ boobarX
+
+/(?<![^f])X/
+ offX
+ ** Failers
+ onyX
+
+/(?<=[^f])X/
+ onyX
+ ** Failers
+ offX
+
+/^/mg
+ a\nb\nc\n
+ \
+
+/(?<=C\n)^/mg
+ A\nC\nC\n
+
+/(?:(?(1)a|b)(X))+/
+ bXaX
+
+/(?:(?(1)\1a|b)(X|Y))+/
+ bXXaYYaY
+ bXYaXXaX
+
+/()()()()()()()()()(?:(?(10)\10a|b)(X|Y))+/
+ bXXaYYaY
+
+/[[,abc,]+]/
+ abc]
+ a,b]
+ [a,b,c]
+
+/(?-x: )/x
+ A\x20B
+
+"(?x)(?-x: \s*#\s*)"
+ A # B
+ ** Failers
+ #
+
+"(?x-is)(?:(?-ixs) \s*#\s*) include"
+ A #include
+ ** Failers
+ A#include
+ A #Include
+
+/a*b*\w/
+ aaabbbb
+ aaaa
+ a
+
+/a*b?\w/
+ aaabbbb
+ aaaa
+ a
+
+/a*b{0,4}\w/
+ aaabbbb
+ aaaa
+ a
+
+/a*b{0,}\w/
+ aaabbbb
+ aaaa
+ a
+
+/a*\d*\w/
+ 0a
+ a
+
+/a*b *\w/x
+ a
+
+/a*b#comment
+ *\w/x
+ a
+
+/a* b *\w/x
+ a
+
+/^\w+=.*(\\\n.*)*/
+ abc=xyz\\\npqr
+
+/(?=(\w+))\1:/
+ abcd:
+
+/^(?=(\w+))\1:/
+ abcd:
+
+/^\Eabc/
+ abc
+
+/^[\Eabc]/
+ a
+ ** Failers
+ E
+
+/^[a-\Ec]/
+ b
+ ** Failers
+ -
+ E
+
+/^[a\E\E-\Ec]/
+ b
+ ** Failers
+ -
+ E
+
+/^[\E\Qa\E-\Qz\E]+/
+ b
+ ** Failers
+ -
+
+/^[a\Q]bc\E]/
+ a
+ ]
+ c
+
+/^[a-\Q\E]/
+ a
+ -
+
+/^(a()*)*/
+ aaaa
+
+/^(?:a(?:(?:))*)*/
+ aaaa
+
+/^(a()+)+/
+ aaaa
+
+/^(?:a(?:(?:))+)+/
+ aaaa
+
+/(a){0,3}(?(1)b|(c|))*D/
+ abbD
+ ccccD
+ D
+
+/(a|)*\d/
+ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+
+/(?>a|)*\d/
+ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+
+/(?:a|)*\d/
+ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
+
+/\Z/g
+ abc\n
+
+/^(?s)(?>.*)(?<!\n)/
+ abc
+ abc\n
+
+/^(?![^\n]*\n\z)/
+ abc
+ abc\n
+
+/\z(?<!\n)/
+ abc
+ abc\n
+
+/(.*(.)?)*/
+ abcd
+
+/( (A | (?(1)0|) )* )/x
+ abcd
+
+/( ( (?(1)0|) )* )/x
+ abcd
+
+/( (?(1)0|)* )/x
+ abcd
+
+/[[:abcd:xyz]]/
+ a]
+ :]
+
+/[abc[:x\]pqr]/
+ a
+ [
+ :
+ ]
+ p
+
+/.*[op][xyz]/
+ fooabcfoo
+
+/(?(?=.*b)b|^)/
+ adc
+ abc
+
+/(?(?=^.*b)b|^)/
+ adc
+ abc
+
+/(?(?=.*b)b|^)*/
+ adc
+ abc
+
+/(?(?=.*b)b|^)+/
+ adc
+ abc
+
+/(?(?=b).*b|^d)/
+ abc
+
+/(?(?=.*b).*b|^d)/
+ abc
+
+/^%((?(?=[a])[^%])|b)*%$/
+ %ab%
+
+/(?i)a(?-i)b|c/
+ XabX
+ XAbX
+ CcC
+ ** Failers
+ XABX
+
+/[\x00-\xff\s]+/
+ \x0a\x0b\x0c\x0d
+
+/^\c/
+ ?
+
+/(abc)\1/i
+ abc
+
+/(abc)\1/
+ abc
+
+/[^a]*/i
+ 12abc
+ 12ABC
+
+/[^a]*+/i
+ 12abc
+ 12ABC
+
+/[^a]*?X/i
+ ** Failers
+ 12abc
+ 12ABC
+
+/[^a]+?X/i
+ ** Failers
+ 12abc
+ 12ABC
+
+/[^a]?X/i
+ 12aXbcX
+ 12AXBCX
+ BCX
+
+/[^a]??X/i
+ 12aXbcX
+ 12AXBCX
+ BCX
+
+/[^a]?+X/i
+ 12aXbcX
+ 12AXBCX
+ BCX
+
+/[^a]{2,3}/i
+ abcdef
+ ABCDEF
+
+/[^a]{2,3}?/i
+ abcdef
+ ABCDEF
+
+/[^a]{2,3}+/i
+ abcdef
+ ABCDEF
+
+/((a|)+)+Z/
+ Z
+
+/(a)b|(a)c/
+ ac
+
+/(?>(a))b|(a)c/
+ ac
+
+/(?=(a))ab|(a)c/
+ ac
+
+/((?>(a))b|(a)c)/
+ ac
+
+/((?>(a))b|(a)c)++/
+ ac
+
+/(?:(?>(a))b|(a)c)++/
+ ac
+
+/(?=(?>(a))b|(a)c)(..)/
+ ac
+
+/(?>(?>(a))b|(a)c)/
+ ac
+
+/(?:(?>([ab])))+a=/+
+ =ba=
+
+/(?>([ab]))+a=/+
+ =ba=
+
+/((?>(a+)b)+(aabab))/
+ aaaabaaabaabab
+
+/(?>a+|ab)+?c/
+ aabc
+
+/(?>a+|ab)+c/
+ aabc
+
+/(?:a+|ab)+c/
+ aabc
+
+/(?(?=(a))a)/
+ a
+
+/(?(?=(a))a)(b)/
+ ab
+
+/^(?:a|ab)++c/
+ aaaabc
+
+/^(?>a|ab)++c/
+ aaaabc
+
+/^(?:a|ab)+c/
+ aaaabc
+
+/(?=abc){3}abc/+
+ abcabcabc
+ ** Failers
+ xyz
+
+/(?=abc)+abc/+
+ abcabcabc
+ ** Failers
+ xyz
+
+/(?=abc)++abc/+
+ abcabcabc
+ ** Failers
+ xyz
+
+/(?=abc){0}xyz/
+ xyz
+
+/(?=abc){1}xyz/
+ ** Failers
+ xyz
+
+/(?=(a))?./
+ ab
+ bc
+
+/(?=(a))??./
+ ab
+ bc
+
+/^(?=(?1))?[az]([abc])d/
+ abd
+ zcdxx
+
+/^(?!a){0}\w+/
+ aaaaa
+
+/(?<=(abc))?xyz/
+ abcxyz
+ pqrxyz
+
+/^[\g<a>]+/
+ ggg<<<aaa>>>
+ ** Failers
+ \\ga
+
+/^[\ga]+/
+ gggagagaxyz
+
+/^[:a[:digit:]]+/
+ aaaa444:::Z
+
+/^[:a[:digit:]:b]+/
+ aaaa444:::bbbZ
+
+/[:a]xxx[b:]/
+ :xxx:
+
+/(?<=a{2})b/i
+ xaabc
+ ** Failers
+ xabc
+
+/(?<!a{2})b/i
+ xabc
+ ** Failers
+ xaabc
+
+/(?<=a\h)c/
+ xa c
+
+/(?<=[^a]{2})b/
+ axxbc
+ aAAbc
+ ** Failers
+ xaabc
+
+/(?<=[^a]{2})b/i
+ axxbc
+ ** Failers
+ aAAbc
+ xaabc
+
+/(?<=a\H)c/
+ abc
+
+/(?<=a\V)c/
+ abc
+
+/(?<=a\v)c/
+ a\nc
+
+/(?(?=c)c|d)++Y/
+ XcccddYX
+
+/(?(?=c)c|d)*+Y/
+ XcccddYX
+
+/^(a{2,3}){2,}+a/
+ aaaaaaa
+ ** Failers
+ aaaaaa
+ aaaaaaaaa
+
+/^(a{2,3})++a/
+ ** Failers
+ aaaaaa
+
+/^(a{2,3})*+a/
+ ** Failers
+ aaaaaa
+
+/ab\Cde/
+ abXde
+
+/(?<=ab\Cde)X/
+ abZdeX
+
+/a[\CD]b/
+ aCb
+ aDb
+
+/a[\C-X]b/
+ aJb
+
+/\H\h\V\v/
+ X X\x0a
+ X\x09X\x0b
+ ** Failers
+ \xa0 X\x0a
+
+/\H*\h+\V?\v{3,4}/
+ \x09\x20\xa0X\x0a\x0b\x0c\x0d\x0a
+ \x09\x20\xa0\x0a\x0b\x0c\x0d\x0a
+ \x09\x20\xa0\x0a\x0b\x0c
+ ** Failers
+ \x09\x20\xa0\x0a\x0b
+
+/\H{3,4}/
+ XY ABCDE
+ XY PQR ST
+
+/.\h{3,4}./
+ XY AB PQRS
+
+/\h*X\h?\H+Y\H?Z/
+ >XNNNYZ
+ > X NYQZ
+ ** Failers
+ >XYZ
+ > X NY Z
+
+/\v*X\v?Y\v+Z\V*\x0a\V+\x0b\V{2,3}\x0c/
+ >XY\x0aZ\x0aA\x0bNN\x0c
+ >\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c
+
+/(foo)\Kbar/
+ foobar
+
+/(foo)(\Kbar|baz)/
+ foobar
+ foobaz
+
+/(foo\Kbar)baz/
+ foobarbaz
+
+/abc\K|def\K/g+
+ Xabcdefghi
+
+/ab\Kc|de\Kf/g+
+ Xabcdefghi
+
+/(?=C)/g+
+ ABCDECBA
+
+/^abc\K/+
+ abcdef
+ ** Failers
+ defabcxyz
+
+/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
+ ababababbbabZXXXX
+
+/(?<A>tom|bon)-\g{A}/
+ tom-tom
+ bon-bon
+
+/(^(a|b\g{-1}))/
+ bacxxx
+
+/(?|(abc)|(xyz))\1/
+ abcabc
+ xyzxyz
+ ** Failers
+ abcxyz
+ xyzabc
+
+/(?|(abc)|(xyz))(?1)/
+ abcabc
+ xyzabc
+ ** Failers
+ xyzxyz
+
+/^X(?5)(a)(?|(b)|(q))(c)(d)(Y)/
+ XYabcdY
+
+/^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)/
+ XYabcdY
+
+/^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)/
+ XYabcdY
+
+/(?'abc'\w+):\k<abc>{2}/
+ a:aaxyz
+ ab:ababxyz
+ ** Failers
+ a:axyz
+ ab:abxyz
+
+/(?'abc'\w+):\g{abc}{2}/
+ a:aaxyz
+ ab:ababxyz
+ ** Failers
+ a:axyz
+ ab:abxyz
+
+/^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x
+ abd
+ ce
+
+/^(a.)\g-1Z/
+ aXaXZ
+
+/^(a.)\g{-1}Z/
+ aXaXZ
+
+/^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) /x
+ abcd
+
+/(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
+ (?(DEFINE)
+ (?<NAME_PAT>[a-z]+)
+ (?<ADDRESS_PAT>\d+)
+ )/x
+ metcalfe 33
+
+/(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/
+ 1.2.3.4
+ 131.111.10.206
+ 10.0.0.0
+ ** Failers
+ 10.6
+ 455.3.4.5
+
+/\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/
+ 1.2.3.4
+ 131.111.10.206
+ 10.0.0.0
+ ** Failers
+ 10.6
+ 455.3.4.5
+
+/^(\w++|\s++)*$/
+ now is the time for all good men to come to the aid of the party
+ *** Failers
+ this is not a line with only words and spaces!
+
+/(\d++)(\w)/
+ 12345a
+ *** Failers
+ 12345+
+
+/a++b/
+ aaab
+
+/(a++b)/
+ aaab
+
+/(a++)b/
+ aaab
+
+/([^()]++|\([^()]*\))+/
+ ((abc(ade)ufh()()x
+
+/\(([^()]++|\([^()]+\))+\)/
+ (abc)
+ (abc(def)xyz)
+ *** Failers
+ ((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+
+/^([^()]|\((?1)*\))*$/
+ abc
+ a(b)c
+ a(b(c))d
+ *** Failers)
+ a(b(c)d
+
+/^>abc>([^()]|\((?1)*\))*<xyz<$/
+ >abc>123<xyz<
+ >abc>1(2)3<xyz<
+ >abc>(1(2)3)<xyz<
+
+/^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i
+ 1221
+ Satanoscillatemymetallicsonatas
+ AmanaplanacanalPanama
+ AblewasIereIsawElba
+ *** Failers
+ Thequickbrownfox
+
+/^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/
+ 12
+ (((2+2)*-3)-7)
+ -12
+ *** Failers
+ ((2+2)*-3)-7)
+
+/^(x(y|(?1){2})z)/
+ xyz
+ xxyzxyzz
+ *** Failers
+ xxyzz
+ xxyzxyzxyzz
+
+/((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/x
+ <>
+ <abcd>
+ <abc <123> hij>
+ <abc <def> hij>
+ <abc<>def>
+ <abc<>
+ *** Failers
+ <abc
+
+/^a+(*FAIL)/
+ aaaaaa
+
+/a+b?c+(*FAIL)/
+ aaabccc
+
+/a+b?(*PRUNE)c+(*FAIL)/
+ aaabccc
+
+/a+b?(*COMMIT)c+(*FAIL)/
+ aaabccc
+
+/a+b?(*SKIP)c+(*FAIL)/
+ aaabcccaaabccc
+
+/^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/
+ aaaxxxxxx
+ aaa++++++
+ bbbxxxxx
+ bbb+++++
+ cccxxxx
+ ccc++++
+ dddddddd
+
+/^(aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/
+ aaaxxxxxx
+ aaa++++++
+ bbbxxxxx
+ bbb+++++
+ cccxxxx
+ ccc++++
+ dddddddd
+
+/a+b?(*THEN)c+(*FAIL)/
+ aaabccc
+
+/(A (A|B(*ACCEPT)|C) D)(E)/x
+ AB
+ ABX
+ AADE
+ ACDE
+ ** Failers
+ AD
+
+/^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i
+ 1221
+ Satan, oscillate my metallic sonatas!
+ A man, a plan, a canal: Panama!
+ Able was I ere I saw Elba.
+ *** Failers
+ The quick brown fox
+
+/^((.)(?1)\2|.)$/
+ a
+ aba
+ aabaa
+ abcdcba
+ pqaabaaqp
+ ablewasiereisawelba
+ rhubarb
+ the quick brown fox
+
+/(a)(?<=b(?1))/
+ baz
+ ** Failers
+ caz
+
+/(?<=b(?1))(a)/
+ zbaaz
+ ** Failers
+ aaa
+
+/(?<X>a)(?<=b(?&X))/
+ baz
+
+/^(?|(abc)|(def))\1/
+ abcabc
+ defdef
+ ** Failers
+ abcdef
+ defabc
+
+/^(?|(abc)|(def))(?1)/
+ abcabc
+ defabc
+ ** Failers
+ defdef
+ abcdef
+
+/(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/xJ
+ a\"aaaaa
+ b\"aaaaa
+ ** Failers
+ b\"11111
+
+/(?:(?1)|B)(A(*F)|C)/
+ ABCD
+ CCD
+ ** Failers
+ CAD
+
+/^(?:(?1)|B)(A(*F)|C)/
+ CCD
+ BCD
+ ** Failers
+ ABCD
+ CAD
+ BAD
+
+/(?:(?1)|B)(A(*ACCEPT)XX|C)D/
+ AAD
+ ACD
+ BAD
+ BCD
+ BAX
+ ** Failers
+ ACX
+ ABC
+
+/(?(DEFINE)(A))B(?1)C/
+ BAC
+
+/(?(DEFINE)((A)\2))B(?1)C/
+ BAAC
+
+/(?<pn> \( ( [^()]++ | (?&pn) )* \) )/x
+ (ab(cd)ef)
+
+/^(?=a(*SKIP)b|ac)/
+ ** Failers
+ ac
+
+/^(?=a(*PRUNE)b)/
+ ab
+ ** Failers
+ ac
+
+/^(?=a(*ACCEPT)b)/
+ ac
+
+/(?>a\Kb)/
+ ab
+
+/((?>a\Kb))/
+ ab
+
+/(a\Kb)/
+ ab
+
+/^a\Kcz|ac/
+ ac
+
+/(?>a\Kbz|ab)/
+ ab
+
+/^(?&t)(?(DEFINE)(?<t>a\Kb))$/
+ ab
+
+/^([^()]|\((?1)*\))*$/
+ a(b)c
+ a(b(c)d)e
+
+/(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))/
+ 0
+ 00
+ 0000
+
+/(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))/
+ 0
+ 00
+ 0000
+
+/--- This one does fail, as expected, in Perl. It needs the complex item at the
+ end of the pattern. A single letter instead of (B|D) makes it not fail,
+ which I think is a Perl bug. --- /
+
+/A(*COMMIT)(B|D)/
+ ACABX
+
+/--- Check the use of names for failure ---/
+
+/^(A(*PRUNE:A)B|C(*PRUNE:B)D)/K
+ ** Failers
+ AC
+ CB
+
+/--- Force no study, otherwise mark is not seen. The studied version is in
+ test 2 because it isn't Perl-compatible. ---/
+
+/(*MARK:A)(*SKIP:B)(C|X)/KSS
+ C
+ D
+
+/^(A(*THEN:A)B|C(*THEN:B)D)/K
+ ** Failers
+ CB
+
+/^(?:A(*THEN:A)B|C(*THEN:B)D)/K
+ CB
+
+/^(?>A(*THEN:A)B|C(*THEN:B)D)/K
+ CB
+
+/--- This should succeed, as the skip causes bump to offset 1 (the mark). Note
+that we have to have something complicated such as (B|Z) at the end because,
+for Perl, a simple character somehow causes an unwanted optimization to mess
+with the handling of backtracking verbs. ---/
+
+/A(*MARK:A)A+(*SKIP:A)(B|Z) | AC/xK
+ AAAC
+
+/--- Test skipping over a non-matching mark. ---/
+
+/A(*MARK:A)A+(*MARK:B)(*SKIP:A)(B|Z) | AC/xK
+ AAAC
+
+/--- Check shorthand for MARK ---/
+
+/A(*:A)A+(*SKIP:A)(B|Z) | AC/xK
+ AAAC
+
+/--- Don't loop! Force no study, otherwise mark is not seen. ---/
+
+/(*:A)A+(*SKIP:A)(B|Z)/KSS
+ AAAC
+
+/--- This should succeed, as a non-existent skip name disables the skip ---/
+
+/A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/xK
+ AAAC
+
+/A(*MARK:A)A+(*SKIP:B)(B|Z) | AC(*:B)/xK
+ AAAC
+
+/--- COMMIT at the start of a pattern should act like an anchor. Again,
+however, we need the complication for Perl. ---/
+
+/(*COMMIT)(A|P)(B|P)(C|P)/
+ ABCDEFG
+ ** Failers
+ DEFGABC
+
+/--- COMMIT inside an atomic group can't stop backtracking over the group. ---/
+
+/(\w+)(?>b(*COMMIT))\w{2}/
+ abbb
+
+/(\w+)b(*COMMIT)\w{2}/
+ abbb
+
+/--- Check opening parens in comment when seeking forward reference. ---/
+
+/(?&t)(?#()(?(DEFINE)(?<t>a))/
+ bac
+
+/--- COMMIT should override THEN ---/
+
+/(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/
+ yes
+
+/(?>(*COMMIT)(yes|no)(*THEN)(*F))?/
+ yes
+
+/b?(*SKIP)c/
+ bc
+ abc
+
+/(*SKIP)bc/
+ a
+
+/(*SKIP)b/
+ a
+
+/(?P<abn>(?P=abn)xxx|)+/
+ xxx
+
+/(?i:([^b]))(?1)/
+ aa
+ aA
+ ** Failers
+ ab
+ aB
+ Ba
+ ba
+
+/^(?&t)*+(?(DEFINE)(?<t>a))\w$/
+ aaaaaaX
+ ** Failers
+ aaaaaa
+
+/^(?&t)*(?(DEFINE)(?<t>a))\w$/
+ aaaaaaX
+ aaaaaa
+
+/^(a)*+(\w)/
+ aaaaX
+ YZ
+ ** Failers
+ aaaa
+
+/^(?:a)*+(\w)/
+ aaaaX
+ YZ
+ ** Failers
+ aaaa
+
+/^(a)++(\w)/
+ aaaaX
+ ** Failers
+ aaaa
+ YZ
+
+/^(?:a)++(\w)/
+ aaaaX
+ ** Failers
+ aaaa
+ YZ
+
+/^(a)?+(\w)/
+ aaaaX
+ YZ
+
+/^(?:a)?+(\w)/
+ aaaaX
+ YZ
+
+/^(a){2,}+(\w)/
+ aaaaX
+ ** Failers
+ aaa
+ YZ
+
+/^(?:a){2,}+(\w)/
+ aaaaX
+ ** Failers
+ aaa
+ YZ
+
+/(a|)*(?1)b/
+ b
+ ab
+ aab
+
+/(a)++(?1)b/
+ ** Failers
+ ab
+ aab
+
+/(a)*+(?1)b/
+ ** Failers
+ ab
+ aab
+
+/(?1)(?:(b)){0}/
+ b
+
+/(foo ( \( ((?:(?> [^()]+ )|(?2))*) \) ) )/x
+ foo(bar(baz)+baz(bop))
+
+/(A (A|B(*ACCEPT)|C) D)(E)/x
+ AB
+
+/\A.*?(a|bc)/
+ ba
+
+/\A.*?(?:a|bc)++/
+ ba
+
+/\A.*?(a|bc)++/
+ ba
+
+/\A.*?(?:a|bc|d)/
+ ba
+
+/(?:(b))++/
+ beetle
+
+/(?(?=(a(*ACCEPT)z))a)/
+ a
+
+/^(a)(?1)+ab/
+ aaaab
+
+/^(a)(?1)++ab/
+ aaaab
+
+/^(?=a(*:M))aZ/K
+ aZbc
+
+/^(?!(*:M)b)aZ/K
+ aZbc
+
+/(?(DEFINE)(a))?b(?1)/
+ backgammon
+
+/^\N+/
+ abc\ndef
+
+/^\N{1,}/
+ abc\ndef
+
+/(?(R)a+|(?R)b)/
+ aaaabcde
+
+/(?(R)a+|((?R))b)/
+ aaaabcde
+
+/((?(R)a+|(?1)b))/
+ aaaabcde
+
+/((?(R1)a+|(?1)b))/
+ aaaabcde
+
+/((?(R)a|(?1)))*/
+ aaa
+
+/((?(R)a|(?1)))+/
+ aaa
+
+/a(*:any
+name)/K
+ abc
+
+/(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))/
+ a
+ ba
+ bba
+
+/--- Checking revised (*THEN) handling ---/
+
+/--- Capture ---/
+
+/^.*? (a(*THEN)b) c/x
+ aabc
+
+/^.*? (a(*THEN)b|(*F)) c/x
+ aabc
+
+/^.*? ( (a(*THEN)b) | (*F) ) c/x
+ aabc
+
+/^.*? ( (a(*THEN)b) ) c/x
+ aabc
+
+/--- Non-capture ---/
+
+/^.*? (?:a(*THEN)b) c/x
+ aabc
+
+/^.*? (?:a(*THEN)b|(*F)) c/x
+ aabc
+
+/^.*? (?: (?:a(*THEN)b) | (*F) ) c/x
+ aabc
+
+/^.*? (?: (?:a(*THEN)b) ) c/x
+ aabc
+
+/--- Atomic ---/
+
+/^.*? (?>a(*THEN)b) c/x
+ aabc
+
+/^.*? (?>a(*THEN)b|(*F)) c/x
+ aabc
+
+/^.*? (?> (?>a(*THEN)b) | (*F) ) c/x
+ aabc
+
+/^.*? (?> (?>a(*THEN)b) ) c/x
+ aabc
+
+/--- Possessive capture ---/
+
+/^.*? (a(*THEN)b)++ c/x
+ aabc
+
+/^.*? (a(*THEN)b|(*F))++ c/x
+ aabc
+
+/^.*? ( (a(*THEN)b)++ | (*F) )++ c/x
+ aabc
+
+/^.*? ( (a(*THEN)b)++ )++ c/x
+ aabc
+
+/--- Possessive non-capture ---/
+
+/^.*? (?:a(*THEN)b)++ c/x
+ aabc
+
+/^.*? (?:a(*THEN)b|(*F))++ c/x
+ aabc
+
+/^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c/x
+ aabc
+
+/^.*? (?: (?:a(*THEN)b)++ )++ c/x
+ aabc
+
+/--- Condition assertion ---/
+
+/^(?(?=a(*THEN)b)ab|ac)/
+ ac
+
+/--- Condition ---/
+
+/^.*?(?(?=a)a|b(*THEN)c)/
+ ba
+
+/^.*?(?:(?(?=a)a|b(*THEN)c)|d)/
+ ba
+
+/^.*?(?(?=a)a(*THEN)b|c)/
+ ac
+
+/--- Assertion ---/
+
+/^.*(?=a(*THEN)b)/
+ aabc
+
+/------------------------------/
+
+/(?>a(*:m))/imsxSK
+ a
+
+/(?>(a)(*:m))/imsxSK
+ a
+
+/(?<=a(*ACCEPT)b)c/
+ xacd
+
+/(?<=(a(*ACCEPT)b))c/
+ xacd
+
+/(?<=(a(*COMMIT)b))c/
+ xabcd
+ ** Failers
+ xacd
+
+/(?<!a(*FAIL)b)c/
+ xcd
+ acd
+
+/(?<=a(*:N)b)c/K
+ xabcd
+
+/(?<=a(*PRUNE)b)c/
+ xabcd
+
+/(?<=a(*SKIP)b)c/
+ xabcd
+
+/(?<=a(*THEN)b)c/
+ xabcd
+
+/(a)(?2){2}(.)/
+ abcd
+
+/(*MARK:A)(*PRUNE:B)(C|X)/KS
+ C
+ D
+
+/(*MARK:A)(*PRUNE:B)(C|X)/KSS
+ C
+ D
+
+/(*MARK:A)(*THEN:B)(C|X)/KS
+ C
+ D
+
+/(*MARK:A)(*THEN:B)(C|X)/KSY
+ C
+ D
+
+/(*MARK:A)(*THEN:B)(C|X)/KSS
+ C
+ D
+
+/--- This should fail, as the skip causes a bump to offset 3 (the skip) ---/
+
+/A(*MARK:A)A+(*SKIP)(B|Z) | AC/xK
+ AAAC
+
+/--- Same --/
+
+/A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/xK
+ AAAC
+
+/A(*:A)A+(*SKIP)(B|Z) | AC/xK
+ AAAC
+
+/--- This should fail, as a null name is the same as no name ---/
+
+/A(*MARK:A)A+(*SKIP:)(B|Z) | AC/xK
+ AAAC
+
+/--- 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
+ XXYZ
+ ** Failers
+ XAQQ
+ XAQQXZZ
+ AXQQQ
+ AXXQQQ
+
+/^(A(*THEN:A)B|C(*THEN:B)D)/K
+ AB
+ CD
+ ** Failers
+ AC
+ CB
+
+/^(A(*PRUNE:A)B|C(*PRUNE:B)D)/K
+ AB
+ CD
+ ** Failers
+ AC
+ CB
+
+/--- 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
+ CD
+
+/--- PRUNE goes to next bumpalong; COMMIT does not. ---/
+
+/A(*PRUNE:A)B/K
+ ACAB
+
+/--- Mark names can be duplicated ---/
+
+/A(*:A)B|X(*:A)Y/K
+ AABC
+ XXYZ
+
+/b(*:m)f|a(*:n)w/K
+ aw
+ ** Failers
+ abc
+
+/b(*:m)f|aw/K
+ abaw
+ ** Failers
+ abc
+ abax
+
+/A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/xK
+ AAAC
+
+/a(*PRUNE:X)bc|qq/KY
+ ** Failers
+ axy
+
+/a(*THEN:X)bc|qq/KY
+ ** Failers
+ axy
+
+/(?=a(*MARK:A)b)..x/K
+ abxy
+ ** Failers
+ abpq
+
+/(?=a(*MARK:A)b)..(*:Y)x/K
+ abxy
+ ** Failers
+ abpq
+
+/(?=a(*PRUNE:A)b)..x/K
+ abxy
+ ** Failers
+ abpq
+
+/(?=a(*PRUNE:A)b)..(*:Y)x/K
+ abxy
+ ** Failers
+ abpq
+
+/(?=a(*THEN:A)b)..x/K
+ abxy
+ ** Failers
+ abpq
+
+/(?=a(*THEN:A)b)..(*:Y)x/K
+ abxy
+ ** Failers
+ abpq
+
+/(another)?(\1?)test/
+ hello world test
+
+/(another)?(\1+)test/
+ hello world test
+
+/(a(*COMMIT)b){0}a(?1)|aac/
+ aac
+
+/((?:a?)*)*c/
+ aac
+
+/((?>a?)*)*c/
+ aac
+
+/(?>.*?a)(?<=ba)/
+ aba
+
+/(?:.*?a)(?<=ba)/
+ aba
+
+/.*?a(*PRUNE)b/
+ aab
+
+/.*?a(*PRUNE)b/s
+ aab
+
+/^a(*PRUNE)b/s
+ aab
+
+/.*?a(*SKIP)b/
+ aab
+
+/(?>.*?a)b/s
+ aab
+
+/(?>.*?a)b/
+ aab
+
+/(?>^a)b/s
+ aab
+
+/(?>.*?)(?<=(abcd)|(wxyz))/
+ alphabetabcd
+ endingwxyz
+
+/(?>.*)(?<=(abcd)|(wxyz))/
+ alphabetabcd
+ endingwxyz
+
+"(?>.*)foo"
+ abcdfooxyz
+
+"(?>.*?)foo"
+ abcdfooxyz
+
+/(?:(a(*PRUNE)b)){0}(?:(?1)|ac)/
+ ac
+
+/(?:(a(*SKIP)b)){0}(?:(?1)|ac)/
+ ac
+
+/(?<=(*SKIP)ac)a/
+ aa
+
+/A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/xK
+ AAAC
+
+/a(*SKIP:m)x|ac(*:n)(*SKIP:n)d|ac/K
+ acacd
+
+/A(*SKIP:m)x|A(*SKIP:n)x|AB/K
+ AB
+
+/((*SKIP:r)d){0}a(*SKIP:m)x|ac(*:n)|ac/K
+ acacd
+
+/-- Tests that try to figure out how Perl works. My hypothesis is that the
+ first verb that is backtracked onto is the one that acts. This seems to be
+ the case almost all the time, but there is one exception that is perhaps a
+ bug. --/
+
+/-- This matches "aaaac"; each PRUNE advances one character until the subject
+ no longer starts with 5 'a's. --/
+
+/aaaaa(*PRUNE)b|a+c/
+ aaaaaac
+
+/-- Putting SKIP in front of PRUNE makes no difference, as it is never
+backtracked onto, whether or not it has a label. --/
+
+/aaaaa(*SKIP)(*PRUNE)b|a+c/
+ aaaaaac
+
+/aaaaa(*SKIP:N)(*PRUNE)b|a+c/
+ aaaaaac
+
+/aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c/
+ aaaaaac
+
+/-- Putting THEN in front makes no difference. */
+
+/aaaaa(*THEN)(*PRUNE)b|a+c/
+ aaaaaac
+
+/-- However, putting COMMIT in front of the prune changes it to "no match". I
+ think this is inconsistent and possibly a bug. For the moment, running this
+ test is moved out of the Perl-compatible file. --/
+
+/aaaaa(*COMMIT)(*PRUNE)b|a+c/
+
+
+/---- OK, lets play the same game again using SKIP instead of PRUNE. ----/
+
+/-- This matches "ac" because SKIP forces the next match to start on the
+ sixth "a". --/
+
+/aaaaa(*SKIP)b|a+c/
+ aaaaaac
+
+/-- Putting PRUNE in front makes no difference. --/
+
+/aaaaa(*PRUNE)(*SKIP)b|a+c/
+ aaaaaac
+
+/-- Putting THEN in front makes no difference. --/
+
+/aaaaa(*THEN)(*SKIP)b|a+c/
+ aaaaaac
+
+/-- In this case, neither does COMMIT. This still matches "ac". --/
+
+/aaaaa(*COMMIT)(*SKIP)b|a+c/
+ aaaaaac
+
+/-- This gives "no match", as expected. --/
+
+/aaaaa(*COMMIT)b|a+c/
+ aaaaaac
+
+
+/------ Tests using THEN ------/
+
+/-- This matches "aaaaaac", as expected. --/
+
+/aaaaa(*THEN)b|a+c/
+ aaaaaac
+
+/-- Putting SKIP in front makes no difference. --/
+
+/aaaaa(*SKIP)(*THEN)b|a+c/
+ aaaaaac
+
+/-- Putting PRUNE in front makes no difference. --/
+
+/aaaaa(*PRUNE)(*THEN)b|a+c/
+ aaaaaac
+
+/-- Putting COMMIT in front makes no difference. --/
+
+/aaaaa(*COMMIT)(*THEN)b|a+c/
+ aaaaaac
+
+/-- End of "priority" tests --/
+
+/aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+/
+ aaaaaa
+
+/aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/
+ aaaaaa
+
+/aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+/
+ aaaaaa
+
+/aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/
+ aaaaaa
+
+/a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c/
+ aaaac
+
+/a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c/
+ aaaac
+
+/aaa(*PRUNE:A)a(*SKIP:A)b|a+c/
+ aaaac
+
+/aaa(*MARK:A)a(*SKIP:A)b|a+c/
+ aaaac
+
+/a(*:m)a(*COMMIT)(*SKIP:m)b|a+c/K
+ aaaaaac
+
+/.?(a|b(*THEN)c)/
+ ba
+
+/(a(*COMMIT)b)c|abd/
+ abc
+ abd
+
+/(?=a(*COMMIT)b)abc|abd/
+ abc
+ abd
+
+/(?>a(*COMMIT)b)c|abd/
+ abc
+ abd
+
+/a(?=b(*COMMIT)c)[^d]|abd/
+ abd
+ abc
+
+/a(?=bc).|abd/
+ abd
+ abc
+
+/a(?>b(*COMMIT)c)d|abd/
+ abceabd
+
+/a(?>bc)d|abd/
+ abceabd
+
+/(?>a(*COMMIT)b)c|abd/
+ abd
+
+/(?>a(*COMMIT)c)d|abd/
+ abd
+
+/((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))/
+ ac
+
+/-- These tests were formerly in test 2, but changes in PCRE and Perl have
+ made them compatible. --/
+
+/^(a)?(?(1)a|b)+$/
+ *** Failers
+ a
+
+/(?=a\Kb)ab/
+ ab
+
+/(?!a\Kb)ac/
+ ac
+
+/^abc(?<=b\Kc)d/
+ abcd
+
+/^abc(?<!b\Kq)d/
+ abcd
+
+
+/A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/xK
+ AAAC
+
+/^((abc|abcx)(*THEN)y|abcd)/
+ abcd
+ *** Failers
+ abcxy
+
+/^((yes|no)(*THEN)(*F))?/
+ yes
+
+/(A (.*) C? (*THEN) | A D) (*FAIL)/x
+AbcdCBefgBhiBqz
+
+/(A (.*) C? (*THEN) | A D) z/x
+AbcdCBefgBhiBqz
+
+/(A (.*) C? (*THEN) | A D) \s* (*FAIL)/x
+AbcdCBefgBhiBqz
+
+/(A (.*) C? (*THEN) | A D) \s* z/x
+AbcdCBefgBhiBqz
+
+/(A (.*) (?:C|) (*THEN) | A D) (*FAIL)/x
+AbcdCBefgBhiBqz
+
+/(A (.*) (?:C|) (*THEN) | A D) z/x
+AbcdCBefgBhiBqz
+
+/(A (.*) C{0,6} (*THEN) | A D) (*FAIL)/x
+AbcdCBefgBhiBqz
+
+/(A (.*) C{0,6} (*THEN) | A D) z/x
+AbcdCBefgBhiBqz
+
+/(A (.*) (CE){0,6} (*THEN) | A D) (*FAIL)/x
+AbcdCEBefgBhiBqz
+
+/(A (.*) (CE){0,6} (*THEN) | A D) z/x
+AbcdCEBefgBhiBqz
+
+/(A (.*) (CE*){0,6} (*THEN) | A D) (*FAIL)/x
+AbcdCBefgBhiBqz
+
+/(A (.*) (CE*){0,6} (*THEN) | A D) z/x
+AbcdCBefgBhiBqz
+
+/(?=a(*COMMIT)b|ac)ac|ac/
+ ac
+
+/(?=a(*COMMIT)b|(ac)) ac | (a)c/x
+ ac
+
+/--------/
+
+/(?(?!b(*THEN)a)bn|bnn)/
+ bnn
+
+/(?!b(*SKIP)a)bn|bnn/
+ bnn
+
+/(?(?!b(*SKIP)a)bn|bnn)/
+ bnn
+
+/(?!b(*PRUNE)a)bn|bnn/
+ bnn
+
+/(?(?!b(*PRUNE)a)bn|bnn)/
+ bnn
+
+/(?!b(*COMMIT)a)bn|bnn/
+ bnn
+
+/(?(?!b(*COMMIT)a)bn|bnn)/
+ bnn
+
+/(?=b(*SKIP)a)bn|bnn/
+ bnn
+
+/(?=b(*THEN)a)bn|bnn/
+ bnn
+
+ /^(?!a(*SKIP)b)/
+ ac
+
+ /^(?!a(*SKIP)b)../
+ acd
+
+/(?!a(*SKIP)b)../
+ acd
+
+/^(?(?!a(*SKIP)b))/
+ ac
+
+/^(?!a(*PRUNE)b)../
+ acd
+
+/(?!a(*PRUNE)b)../
+ acd
+
+ /(?!a(*COMMIT)b)ac|cd/
+ ac
+
+/\A.*?(?:a|bc)/
+ ba
+
+/^(A(*THEN)B|C(*THEN)D)/
+ CD
+
+/(*:m(m)(?&y)(?(DEFINE)(?<y>b))/K
+ abc
+
+/(*PRUNE:m(m)(?&y)(?(DEFINE)(?<y>b))/K
+ abc
+
+/(*SKIP:m(m)(?&y)(?(DEFINE)(?<y>b))/K
+ abc
+
+/(*THEN:m(m)(?&y)(?(DEFINE)(?<y>b))/K
+ abc
+
+/^\d*\w{4}/
+ 1234
+ 123
+
+/^[^b]*\w{4}/
+ aaaa
+ aaa
+
+/^[^b]*\w{4}/i
+ aaaa
+ aaa
+
+/^a*\w{4}/
+ aaaa
+ aaa
+
+/^a*\w{4}/i
+ aaaa
+ aaa
+
+/(?(?=ab)ab)/+
+ ca
+ cd
+
+/(?:(?<n>foo)|(?<n>bar))\k<n>/J
+ foofoo
+ barbar
+
+/(?<n>A)(?:(?<n>foo)|(?<n>bar))\k<n>/J
+ AfooA
+ AbarA
+ ** Failers
+ Afoofoo
+ Abarbar
+
+/^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/
+ 1 IN SOA non-sp1 non-sp2(
+
+/^ (?:(?<A>A)|(?'B'B)(?<A>A)) (?('A')x) (?(<B>)y)$/xJ
+ Ax
+ BAxy
+
+/^A\xZ/
+ A\0Z
+
+/^A\o{123}B/
+ A\123B
+
+/ ^ a + + b $ /x
+ aaaab
+
+/ ^ a + #comment
+ + b $ /x
+ aaaab
+
+/ ^ a + #comment
+ #comment
+ + b $ /x
+ aaaab
+
+/ ^ (?> a + ) b $ /x
+ aaaab
+
+/ ^ ( a + ) + + \w $ /x
+ aaaab
+
+/(?:a\Kb)*+/+
+ ababc
+
+/(?>a\Kb)*/+
+ ababc
+
+/(?:a\Kb)*/+
+ ababc
+
+/(a\Kb)*+/+
+ ababc
+
+/(a\Kb)*/+
+ ababc
+
+/(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/
+ acb
+
+'\A(?:[^\"]++|\"(?:[^\"]*+|\"\")*+\")++'
+ NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
+
+'\A(?:[^\"]++|\"(?:[^\"]++|\"\")*+\")++'
+ NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
+
+'\A(?:[^\"]++|\"(?:[^\"]++|\"\")++\")++'
+ NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
+
+'\A([^\"1]++|[\"2]([^\"3]*+|[\"4][\"5])*+[\"6])++'
+ NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
+
+/^\w+(?>\s*)(?<=\w)/
+ test test
+
+/(?P<same>a)(?P<same>b)/gJ
+ abbaba
+
+/(?P<same>a)(?P<same>b)(?P=same)/gJ
+ abbaba
+
+/(?P=same)?(?P<same>a)(?P<same>b)/gJ
+ abbaba
+
+/(?:(?P=same)?(?:(?P<same>a)|(?P<same>b))(?P=same))+/gJ
+ bbbaaabaabb
+
+/(?:(?P=same)?(?:(?P=same)(?P<same>a)(?P=same)|(?P=same)?(?P<same>b)(?P=same)){2}(?P=same)(?P<same>c)(?P=same)){2}(?P<same>z)?/gJ
+ bbbaaaccccaaabbbcc
+
+/(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/
+ acl
+ bdl
+ adl
+ bcl
+
+/\sabc/
+ \x{0b}abc
+
+/[\Qa]\E]+/
+ aa]]
+
+/[\Q]a\E]+/
+ aa]]
+
+/(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))/
+ 1234abcd
+
+/(\2)(\1)/
+
+"Z*(|d*){216}"
+
+"(?1)(?#?'){8}(a)"
+ baaaaaaaaac
+
+"(?|(\k'Pm')|(?'Pm'))"
+ abcd
+
+/(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*[,;:])(?=.{8,16})(?!.*[\s])/
+ \ Fred:099
+
+/(?=.*X)X$/
+ \ X
+
+/X+(?#comment)?/
+ >XXX<
+
+/ (?<word> \w+ )* \. /xi
+ pokus.
+
+/(?(DEFINE) (?<word> \w+ ) ) (?&word)* \./xi
+ pokus.
+
+/(?(DEFINE) (?<word> \w+ ) ) ( (?&word)* ) \./xi
+ pokus.
+
+/(?&word)* (?(DEFINE) (?<word> \w+ ) ) \./xi
+ pokus.
+
+/(?&word)* \. (?<word> \w+ )/xi
+ pokus.hokus
+
+/(?:A(*:X))*+/K
+ A
+
+/-- End of testinput1 --/
generated by cgit v1.1 at 2024-11-05 13:56:30 +0000