walkero
/
pcre2
1
0
Fork 0
Code Issues Pull Requests Projects Releases 1 Wiki Activity
pcre2/testdata/testoutput1

9400 lines
132 KiB
Plaintext
Raw Normal View History

Tests 1 and 2 are converted (but without save/restore).
2014-07-24 18:32:38 +02:00
# This set of tests is for features that are compatible with all versions of
# Perl >= 5.10, in non-UTF mode. It should run clean for the 8-bit, 16-bit, and
# 32-bit PCRE libraries, and also using the perltest.pl script.
#forbid_utf
#perltest
/the quick brown fox/
the quick brown fox
0: the quick brown fox
The quick brown FOX
No match
What do you know about the quick brown fox?
0: the quick brown fox
What do you know about THE QUICK BROWN FOX?
No match
/The quick brown fox/i
the quick brown fox
0: the quick brown fox
The quick brown FOX
0: The quick brown FOX
What do you know about the quick brown fox?
0: the quick brown fox
What do you know about THE QUICK BROWN FOX?
0: THE QUICK BROWN FOX
/abcd\t\n\r\f\a\e\071\x3b\$\\\?caxyz/
abcd\t\n\r\f\a\e9;\$\\?caxyz
0: abcd\x09\x0a\x0d\x0c\x07\x1b9;$\?caxyz
/a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz/
abxyzpqrrrabbxyyyypqAzz
0: abxyzpqrrrabbxyyyypqAzz
abxyzpqrrrabbxyyyypqAzz
0: abxyzpqrrrabbxyyyypqAzz
aabxyzpqrrrabbxyyyypqAzz
0: aabxyzpqrrrabbxyyyypqAzz
aaabxyzpqrrrabbxyyyypqAzz
0: aaabxyzpqrrrabbxyyyypqAzz
aaaabxyzpqrrrabbxyyyypqAzz
0: aaaabxyzpqrrrabbxyyyypqAzz
abcxyzpqrrrabbxyyyypqAzz
0: abcxyzpqrrrabbxyyyypqAzz
aabcxyzpqrrrabbxyyyypqAzz
0: aabcxyzpqrrrabbxyyyypqAzz
aaabcxyzpqrrrabbxyyyypAzz
0: aaabcxyzpqrrrabbxyyyypAzz
aaabcxyzpqrrrabbxyyyypqAzz
0: aaabcxyzpqrrrabbxyyyypqAzz
aaabcxyzpqrrrabbxyyyypqqAzz
0: aaabcxyzpqrrrabbxyyyypqqAzz
aaabcxyzpqrrrabbxyyyypqqqAzz
0: aaabcxyzpqrrrabbxyyyypqqqAzz
aaabcxyzpqrrrabbxyyyypqqqqAzz
0: aaabcxyzpqrrrabbxyyyypqqqqAzz
aaabcxyzpqrrrabbxyyyypqqqqqAzz
0: aaabcxyzpqrrrabbxyyyypqqqqqAzz
aaabcxyzpqrrrabbxyyyypqqqqqqAzz
0: aaabcxyzpqrrrabbxyyyypqqqqqqAzz
aaaabcxyzpqrrrabbxyyyypqAzz
0: aaaabcxyzpqrrrabbxyyyypqAzz
abxyzzpqrrrabbxyyyypqAzz
0: abxyzzpqrrrabbxyyyypqAzz
aabxyzzzpqrrrabbxyyyypqAzz
0: aabxyzzzpqrrrabbxyyyypqAzz
aaabxyzzzzpqrrrabbxyyyypqAzz
0: aaabxyzzzzpqrrrabbxyyyypqAzz
aaaabxyzzzzpqrrrabbxyyyypqAzz
0: aaaabxyzzzzpqrrrabbxyyyypqAzz
abcxyzzpqrrrabbxyyyypqAzz
0: abcxyzzpqrrrabbxyyyypqAzz
aabcxyzzzpqrrrabbxyyyypqAzz
0: aabcxyzzzpqrrrabbxyyyypqAzz
aaabcxyzzzzpqrrrabbxyyyypqAzz
0: aaabcxyzzzzpqrrrabbxyyyypqAzz
aaaabcxyzzzzpqrrrabbxyyyypqAzz
0: aaaabcxyzzzzpqrrrabbxyyyypqAzz
aaaabcxyzzzzpqrrrabbbxyyyypqAzz
0: aaaabcxyzzzzpqrrrabbbxyyyypqAzz
aaaabcxyzzzzpqrrrabbbxyyyyypqAzz
0: aaaabcxyzzzzpqrrrabbbxyyyyypqAzz
aaabcxyzpqrrrabbxyyyypABzz
0: aaabcxyzpqrrrabbxyyyypABzz
aaabcxyzpqrrrabbxyyyypABBzz
0: aaabcxyzpqrrrabbxyyyypABBzz
>>>aaabxyzpqrrrabbxyyyypqAzz
0: aaabxyzpqrrrabbxyyyypqAzz
>aaaabxyzpqrrrabbxyyyypqAzz
0: aaaabxyzpqrrrabbxyyyypqAzz
>>>>abcxyzpqrrrabbxyyyypqAzz
0: abcxyzpqrrrabbxyyyypqAzz
*** Failers
No match
abxyzpqrrabbxyyyypqAzz
No match
abxyzpqrrrrabbxyyyypqAzz
No match
abxyzpqrrrabxyyyypqAzz
No match
aaaabcxyzzzzpqrrrabbbxyyyyyypqAzz
No match
aaaabcxyzzzzpqrrrabbbxyyypqAzz
No match
aaabcxyzpqrrrabbxyyyypqqqqqqqAzz
No match
/^(abc){1,2}zz/
abczz
0: abczz
1: abc
abcabczz
0: abcabczz
1: abc
*** Failers
No match
zz
No match
abcabcabczz
No match
>>abczz
No match
/^(b+?|a){1,2}?c/
bc
0: bc
1: b
bbc
0: bbc
1: b
bbbc
0: bbbc
1: bb
bac
0: bac
1: a
bbac
0: bbac
1: a
aac
0: aac
1: a
abbbbbbbbbbbc
0: abbbbbbbbbbbc
1: bbbbbbbbbbb
bbbbbbbbbbbac
0: bbbbbbbbbbbac
1: a
*** Failers
No match
aaac
No match
abbbbbbbbbbbac
No match
/^(b+|a){1,2}c/
bc
0: bc
1: b
bbc
0: bbc
1: bb
bbbc
0: bbbc
1: bbb
bac
0: bac
1: a
bbac
0: bbac
1: a
aac
0: aac
1: a
abbbbbbbbbbbc
0: abbbbbbbbbbbc
1: bbbbbbbbbbb
bbbbbbbbbbbac
0: bbbbbbbbbbbac
1: a
*** Failers
No match
aaac
No match
abbbbbbbbbbbac
No match
/^(b+|a){1,2}?bc/
bbc
0: bbc
1: b
/^(b*|ba){1,2}?bc/
babc
0: babc
1: ba
bbabc
0: bbabc
1: ba
bababc
0: bababc
1: ba
*** Failers
No match
bababbc
No match
babababc
No match
/^(ba|b*){1,2}?bc/
babc
0: babc
1: ba
bbabc
0: bbabc
1: ba
bababc
0: bababc
1: ba
*** Failers
No match
bababbc
No match
babababc
No match
/^\ca\cA\c[;\c:/
\x01\x01\e;z
0: \x01\x01\x1b;z
/^[ab\]cde]/
athing
0: a
bthing
0: b
]thing
0: ]
cthing
0: c
dthing
0: d
ething
0: e
*** Failers
No match
fthing
No match
[thing
No match
\\thing
No match
/^[]cde]/
]thing
0: ]
cthing
0: c
dthing
0: d
ething
0: e
*** Failers
No match
athing
No match
fthing
No match
/^[^ab\]cde]/
fthing
0: f
[thing
0: [
\\thing
0: \
*** Failers
0: *
athing
No match
bthing
No match
]thing
No match
cthing
No match
dthing
No match
ething
No match
/^[^]cde]/
athing
0: a
fthing
0: f
*** Failers
0: *
]thing
No match
cthing
No match
dthing
No match
ething
No match
/^\<5C>/
<20>
0: \x81
/^<5E>/
<20>
0: \xff
/^[0-9]+$/
0
0: 0
1
0: 1
2
0: 2
3
0: 3
4
0: 4
5
0: 5
6
0: 6
7
0: 7
8
0: 8
9
0: 9
10
0: 10
100
0: 100
*** Failers
No match
abc
No match
/^.*nter/
enter
0: enter
inter
0: inter
uponter
0: uponter
/^xxx[0-9]+$/
xxx0
0: xxx0
xxx1234
0: xxx1234
*** Failers
No match
xxx
No match
/^.+[0-9][0-9][0-9]$/
x123
0: x123
xx123
0: xx123
123456
0: 123456
*** Failers
No match
123
No match
x1234
0: x1234
/^.+?[0-9][0-9][0-9]$/
x123
0: x123
xx123
0: xx123
123456
0: 123456
*** Failers
No match
123
No match
x1234
0: x1234
/^([^!]+)!(.+)=apquxz\.ixr\.zzz\.ac\.uk$/
abc!pqr=apquxz.ixr.zzz.ac.uk
0: abc!pqr=apquxz.ixr.zzz.ac.uk
1: abc
2: pqr
*** Failers
No match
!pqr=apquxz.ixr.zzz.ac.uk
No match
abc!=apquxz.ixr.zzz.ac.uk
No match
abc!pqr=apquxz:ixr.zzz.ac.uk
No match
abc!pqr=apquxz.ixr.zzz.ac.ukk
No match
/:/
Well, we need a colon: somewhere
0: :
*** Fail if we don't
No match
/([\da-f:]+)$/i
0abc
0: 0abc
1: 0abc
abc
0: abc
1: abc
fed
0: fed
1: fed
E
0: E
1: E
::
0: ::
1: ::
5f03:12C0::932e
0: 5f03:12C0::932e
1: 5f03:12C0::932e
fed def
0: def
1: def
Any old stuff
0: ff
1: ff
*** Failers
No match
0zzz
No match
gzzz
No match
fed\x20
No match
Any old rubbish
No match
/^.*\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/
.1.2.3
0: .1.2.3
1: 1
2: 2
3: 3
A.12.123.0
0: A.12.123.0
1: 12
2: 123
3: 0
*** Failers
No match
.1.2.3333
No match
1.2.3
No match
1234.2.3
No match
/^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/
1 IN SOA non-sp1 non-sp2(
0: 1 IN SOA non-sp1 non-sp2(
1: 1
2: non-sp1
3: non-sp2
1 IN SOA non-sp1 non-sp2 (
0: 1 IN SOA non-sp1 non-sp2 (
1: 1
2: non-sp1
3: non-sp2
*** Failers
No match
1IN SOA non-sp1 non-sp2(
No match
/^[a-zA-Z\d][a-zA-Z\d\-]*(\.[a-zA-Z\d][a-zA-z\d\-]*)*\.$/
a.
0: a.
Z.
0: Z.
2.
0: 2.
ab-c.pq-r.
0: ab-c.pq-r.
1: .pq-r
sxk.zzz.ac.uk.
0: sxk.zzz.ac.uk.
1: .uk
x-.y-.
0: x-.y-.
1: .y-
*** Failers
No match
-abc.peq.
No match
/^\*\.[a-z]([a-z\-\d]*[a-z\d]+)?(\.[a-z]([a-z\-\d]*[a-z\d]+)?)*$/
*.a
0: *.a
*.b0-a
0: *.b0-a
1: 0-a
*.c3-b.c
0: *.c3-b.c
1: 3-b
2: .c
*.c-a.b-c
0: *.c-a.b-c
1: -a
2: .b-c
3: -c
*** Failers
No match
*.0
No match
*.a-
No match
*.a-b.c-
No match
*.c-a.0-c
No match
/^(?=ab(de))(abd)(e)/
abde
0: abde
1: de
2: abd
3: e
/^(?!(ab)de|x)(abd)(f)/
abdf
0: abdf
1: <unset>
2: abd
3: f
/^(?=(ab(cd)))(ab)/
abcd
0: ab
1: abcd
2: cd
3: ab
/^[\da-f](\.[\da-f])*$/i
a.b.c.d
0: a.b.c.d
1: .d
A.B.C.D
0: A.B.C.D
1: .D
a.b.c.1.2.3.C
0: a.b.c.1.2.3.C
1: .C
/^\".*\"\s*(;.*)?$/
\"1234\"
0: "1234"
\"abcd\" ;
0: "abcd" ;
1: ;
\"\" ; rhubarb
0: "" ; rhubarb
1: ; rhubarb
*** Failers
No match
\"1234\" : things
No match
/^$/
\
0:
*** Failers
No match
/ ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/x
ab c
0: ab c
*** Failers
No match
abc
No match
ab cde
No match
/(?x) ^ a (?# begins with a) b\sc (?# then b c) $ (?# then end)/
ab c
0: ab c
*** Failers
No match
abc
No match
ab cde
No match
/^ a\ b[c ]d $/x
a bcd
0: a bcd
a b d
0: a b d
*** Failers
No match
abcd
No match
ab d
No match
/^(a(b(c)))(d(e(f)))(h(i(j)))(k(l(m)))$/
abcdefhijklm
0: abcdefhijklm
1: abc
2: bc
3: c
4: def
5: ef
6: f
7: hij
8: ij
9: j
10: klm
11: lm
12: m
/^(?:a(b(c)))(?:d(e(f)))(?:h(i(j)))(?:k(l(m)))$/
abcdefhijklm
0: abcdefhijklm
1: bc
2: c
3: ef
4: f
5: ij
6: j
7: lm
8: m
/^[\w][\W][\s][\S][\d][\D][\b][\n][\c]][\022]/
a+ Z0+\x08\n\x1d\x12
0: a+ Z0+\x08\x0a\x1d\x12
/^[.^$|()*+?{,}]+/
.^\$(*+)|{?,?}
0: .^$(*+)|{?,?}
/^a*\w/
z
0: z
az
0: az
aaaz
0: aaaz
a
0: a
aa
0: aa
aaaa
0: aaaa
a+
0: a
aa+
0: aa
/^a*?\w/
z
0: z
az
0: a
aaaz
0: a
a
0: a
aa
0: a
aaaa
0: a
a+
0: a
aa+
0: a
/^a+\w/
az
0: az
aaaz
0: aaaz
aa
0: aa
aaaa
0: aaaa
aa+
0: aa
/^a+?\w/
az
0: az
aaaz
0: aa
aa
0: aa
aaaa
0: aa
aa+
0: aa
/^\d{8}\w{2,}/
1234567890
0: 1234567890
12345678ab
0: 12345678ab
12345678__
0: 12345678__
*** Failers
No match
1234567
No match
/^[aeiou\d]{4,5}$/
uoie
0: uoie
1234
0: 1234
12345
0: 12345
aaaaa
0: aaaaa
*** Failers
No match
123456
No match
/^[aeiou\d]{4,5}?/
uoie
0: uoie
1234
0: 1234
12345
0: 1234
aaaaa
0: aaaa
123456
0: 1234
/\A(abc|def)=(\1){2,3}\Z/
abc=abcabc
0: abc=abcabc
1: abc
2: abc
def=defdefdef
0: def=defdefdef
1: def
2: def
*** Failers
No match
abc=defdef
No match
/^(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11*(\3\4)\1(?#)2$/
abcdefghijkcda2
0: abcdefghijkcda2
1: a
2: b
3: c
4: d
5: e
6: f
7: g
8: h
9: i
10: j
11: k
12: cd
abcdefghijkkkkcda2
0: abcdefghijkkkkcda2
1: a
2: b
3: c
4: d
5: e
6: f
7: g
8: h
9: i
10: j
11: k
12: cd
/(cat(a(ract|tonic)|erpillar)) \1()2(3)/
cataract cataract23
0: cataract cataract23
1: cataract
2: aract
3: ract
4:
5: 3
catatonic catatonic23
0: catatonic catatonic23
1: catatonic
2: atonic
3: tonic
4:
5: 3
caterpillar caterpillar23
0: caterpillar caterpillar23
1: caterpillar
2: erpillar
3: <unset>
4:
5: 3
/^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
0: From abcd Mon Sep 01 12:33
1: abcd
/^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
0: From abcd Mon Sep 01 12:33
1: Sep
From abcd Mon Sep 1 12:33:02 1997
0: From abcd Mon Sep 1 12:33
1: Sep
*** Failers
No match
From abcd Sep 01 12:33:02 1997
No match
/^12.34/s
12\n34
0: 12\x0a34
12\r34
0: 12\x0d34
/\w+(?=\t)/
the quick brown\t fox
0: brown
/foo(?!bar)(.*)/
foobar is foolish see?
0: foolish see?
1: lish see?
/(?:(?!foo)...|^.{0,2})bar(.*)/
foobar crowbar etc
0: rowbar etc
1: etc
barrel
0: barrel
1: rel
2barrel
0: 2barrel
1: rel
A barrel
0: A barrel
1: rel
/^(\D*)(?=\d)(?!123)/
abc456
0: abc
1: abc
*** Failers
No match
abc123
No match
/^1234(?# test newlines
inside)/
1234
0: 1234
/^1234 #comment in extended re
/x
1234
0: 1234
/#rhubarb
abcd/x
abcd
0: abcd
/^abcd#rhubarb/x
abcd
0: abcd
/^(a)\1{2,3}(.)/
aaab
0: aaab
1: a
2: b
aaaab
0: aaaab
1: a
2: b
aaaaab
0: aaaaa
1: a
2: a
aaaaaab
0: aaaaa
1: a
2: a
/(?!^)abc/
the abc
0: abc
*** Failers
No match
abc
No match
/(?=^)abc/
abc
0: abc
*** Failers
No match
the abc
No match
/^[ab]{1,3}(ab*|b)/
aabbbbb
0: aabb
1: b
/^[ab]{1,3}?(ab*|b)/
aabbbbb
0: aabbbbb
1: abbbbb
/^[ab]{1,3}?(ab*?|b)/
aabbbbb
0: aa
1: a
/^[ab]{1,3}(ab*?|b)/
aabbbbb
0: aabb
1: b
/ (?: [\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>
0: Alan Other <user@dom.ain>
<user\@dom.ain>
0: user@dom.ain
user\@dom.ain
0: user@dom.ain
\"A. Other\" <user.1234\@dom.ain> (a comment)
0: "A. Other" <user.1234@dom.ain> (a comment)
A. Other <user.1234\@dom.ain> (a comment)
0: Other <user.1234@dom.ain> (a comment)
\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay
A missing angle <user\@some.where
0: user@some.where
*** Failers
No match
The quick brown fox
No match
/[\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>
0: Alan Other <user@dom.ain>
<user\@dom.ain>
0: user@dom.ain
user\@dom.ain
0: user@dom.ain
\"A. Other\" <user.1234\@dom.ain> (a comment)
0: "A. Other" <user.1234@dom.ain>
A. Other <user.1234\@dom.ain> (a comment)
0: Other <user.1234@dom.ain>
\"/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/\"\@x400-re.lay
0: "/s=user/ou=host/o=place/prmd=uu.yy/admd= /c=gb/"@x400-re.lay
A missing angle <user\@some.where
0: user@some.where
*** Failers
No match
The quick brown fox
No match
/abc\0def\00pqr\000xyz\0000AB/
abc\0def\00pqr\000xyz\0000AB
0: abc\x00def\x00pqr\x00xyz\x000AB
abc456 abc\0def\00pqr\000xyz\0000ABCDE
0: abc\x00def\x00pqr\x00xyz\x000AB
/abc\x0def\x00pqr\x000xyz\x0000AB/
abc\x0def\x00pqr\x000xyz\x0000AB
0: abc\x0def\x00pqr\x000xyz\x0000AB
abc456 abc\x0def\x00pqr\x000xyz\x0000ABCDE
0: abc\x0def\x00pqr\x000xyz\x0000AB
/^[\000-\037]/
\0A
0: \x00
\01B
0: \x01
\037C
0: \x1f
/\0*/
\0\0\0\0
0: \x00\x00\x00\x00
/A\x0{2,3}Z/
The A\x0\x0Z
0: A\x00\x00Z
An A\0\x0\0Z
0: A\x00\x00\x00Z
*** Failers
No match
A\0Z
No match
A\0\x0\0\x0Z
No match
/^(cow|)\1(bell)/
cowcowbell
0: cowcowbell
1: cow
2: bell
bell
0: bell
1:
2: bell
*** Failers
No match
cowbell
No match
/^\s/
\040abc
0:
\x0cabc
0: \x0c
\nabc
0: \x0a
\rabc
0: \x0d
\tabc
0: \x09
*** Failers
No match
abc
No match
/^a b
c/x
abc
0: abc
/^(a|)\1*b/
ab
0: ab
1: a
aaaab
0: aaaab
1: a
b
0: b
1:
*** Failers
No match
acb
No match
/^(a|)\1+b/
aab
0: aab
1: a
aaaab
0: aaaab
1: a
b
0: b
1:
*** Failers
No match
ab
No match
/^(a|)\1?b/
ab
0: ab
1: a
aab
0: aab
1: a
b
0: b
1:
*** Failers
No match
acb
No match
/^(a|)\1{2}b/
aaab
0: aaab
1: a
b
0: b
1:
*** Failers
No match
ab
No match
aab
No match
aaaab
No match
/^(a|)\1{2,3}b/
aaab
0: aaab
1: a
aaaab
0: aaaab
1: a
b
0: b
1:
*** Failers
No match
ab
No match
aab
No match
aaaaab
No match
/ab{1,3}bc/
abbbbc
0: abbbbc
abbbc
0: abbbc
abbc
0: abbc
*** Failers
No match
abc
No match
abbbbbc
No match
/([^.]*)\.([^:]*):[T ]+(.*)/
track1.title:TBlah blah blah
0: track1.title:TBlah blah blah
1: track1
2: title
3: Blah blah blah
/([^.]*)\.([^:]*):[T ]+(.*)/i
track1.title:TBlah blah blah
0: track1.title:TBlah blah blah
1: track1
2: title
3: Blah blah blah
/([^.]*)\.([^:]*):[t ]+(.*)/i
track1.title:TBlah blah blah
0: track1.title:TBlah blah blah
1: track1
2: title
3: Blah blah blah
/^[W-c]+$/
WXY_^abc
0: WXY_^abc
*** Failers
No match
wxy
No match
/^[W-c]+$/i
WXY_^abc
0: WXY_^abc
wxy_^ABC
0: wxy_^ABC
/^[\x3f-\x5F]+$/i
WXY_^abc
0: WXY_^abc
wxy_^ABC
0: wxy_^ABC
/^abc$/m
abc
0: abc
qqq\nabc
0: abc
abc\nzzz
0: abc
qqq\nabc\nzzz
0: abc
/^abc$/
abc
0: abc
*** Failers
No match
qqq\nabc
No match
abc\nzzz
No match
qqq\nabc\nzzz
No match
/\Aabc\Z/m
abc
0: abc
abc\n
0: abc
*** Failers
No match
qqq\nabc
No match
abc\nzzz
No match
qqq\nabc\nzzz
No match
/\A(.)*\Z/s
abc\ndef
0: abc\x0adef
1: f
/\A(.)*\Z/m
*** Failers
0: *** Failers
1: s
abc\ndef
No match
/(?:b)|(?::+)/
b::c
0: b
c::b
0: ::
/[-az]+/
az-
0: az-
*** Failers
0: a
b
No match
/[az-]+/
za-
0: za-
*** Failers
0: a
b
No match
/[a\-z]+/
a-z
0: a-z
*** Failers
0: a
b
No match
/[a-z]+/
abcdxyz
0: abcdxyz
/[\d-]+/
12-34
0: 12-34
*** Failers
No match
aaa
No match
/[\d-z]+/
12-34z
0: 12-34z
*** Failers
No match
aaa
No match
/\x5c/
\\
0: \
/\x20Z/
the Zoo
0: Z
*** Failers
No match
Zulu
No match
/(abc)\1/i
abcabc
0: abcabc
1: abc
ABCabc
0: ABCabc
1: ABC
abcABC
0: abcABC
1: abc
/ab{3cd/
ab{3cd
0: ab{3cd
/ab{3,cd/
ab{3,cd
0: ab{3,cd
/ab{3,4a}cd/
ab{3,4a}cd
0: ab{3,4a}cd
/{4,5a}bc/
{4,5a}bc
0: {4,5a}bc
/abc$/
abc
0: abc
abc\n
0: abc
*** Failers
No match
abc\ndef
No match
/(abc)\123/
abc\x53
0: abcS
1: abc
/(abc)\223/
abc\x93
0: abc\x93
1: abc
/(abc)\323/
abc\xd3
0: abc\xd3
1: abc
/(abc)\100/
abc\x40
0: abc@
1: abc
abc\100
0: abc@
1: abc
/(abc)\1000/
abc\x400
0: abc@0
1: abc
abc\x40\x30
0: abc@0
1: abc
abc\1000
0: abc@0
1: abc
abc\100\x30
0: abc@0
1: abc
abc\100\060
0: abc@0
1: abc
abc\100\60
0: abc@0
1: abc
/^(A)(B)(C)(D)(E)(F)(G)(H)(I)\8\9$/
ABCDEFGHIHI
0: ABCDEFGHIHI
1: A
2: B
3: C
4: D
5: E
6: F
7: G
8: H
9: I
/^[A\8B\9C]+$/
A8B9C
0: A8B9C
*** Failers
No match
A8B9C\x00
No match
/(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)\12\123/
abcdefghijkllS
0: abcdefghijkllS
1: a
2: b
3: c
4: d
5: e
6: f
7: g
8: h
9: i
10: j
11: k
12: l
/(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12\123/
abcdefghijk\12S
0: abcdefghijk\x0aS
1: a
2: b
3: c
4: d
5: e
6: f
7: g
8: h
9: i
10: j
11: k
/a{0}bc/
bc
0: bc
/(a|(bc)){0,0}?xyz/
xyz
0: xyz
/abc[\10]de/
abc\010de
0: abc\x08de
/abc[\1]de/
abc\1de
0: abc\x01de
/(abc)[\1]de/
abc\1de
0: abc\x01de
1: abc
/(?s)a.b/
a\nb
0: a\x0ab
/^([^a])([^\b])([^c]*)([^d]{3,4})/
baNOTccccd
0: baNOTcccc
1: b
2: a
3: NOT
4: cccc
baNOTcccd
0: baNOTccc
1: b
2: a
3: NOT
4: ccc
baNOTccd
0: baNOTcc
1: b
2: a
3: NO
4: Tcc
bacccd
0: baccc
1: b
2: a
3:
4: ccc
*** Failers
0: *** Failers
1: *
2: *
3: * Fail
4: ers
anything
No match
b\bc
No match
baccd
No match
/[^a]/
Abc
0: A
/[^a]/i
Abc
0: b
/[^a]+/
AAAaAbc
0: AAA
/[^a]+/i
AAAaAbc
0: bc
/[^a]+/
bbb\nccc
0: bbb\x0accc
/[^k]$/
abc
0: c
*** Failers
0: s
abk
No match
/[^k]{2,3}$/
abc
0: abc
kbc
0: bc
kabc
0: abc
*** Failers
0: ers
abk
No match
akb
No match
akk
No match
/^\d{8,}\@.+[^k]$/
12345678\@a.b.c.d
0: 12345678@a.b.c.d
123456789\@x.y.z
0: 123456789@x.y.z
*** Failers
No match
12345678\@x.y.uk
No match
1234567\@a.b.c.d
No match
/(a)\1{8,}/
aaaaaaaaa
0: aaaaaaaaa
1: a
aaaaaaaaaa
0: aaaaaaaaaa
1: a
*** Failers
No match
aaaaaaa
No match
/[^a]/
aaaabcd
0: b
aaAabcd
0: A
/[^a]/i
aaaabcd
0: b
aaAabcd
0: b
/[^az]/
aaaabcd
0: b
aaAabcd
0: A
/[^az]/i
aaaabcd
0: b
aaAabcd
0: b
/\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
0: \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 !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff
/P[^*]TAIRE[^*]{1,6}?LL/
xxxxxxxxxxxPSTAIREISLLxxxxxxxxx
0: PSTAIREISLL
/P[^*]TAIRE[^*]{1,}?LL/
xxxxxxxxxxxPSTAIREISLLxxxxxxxxx
0: PSTAIREISLL
/(\.\d\d[1-9]?)\d+/
1.230003938
0: .230003938
1: .23
1.875000282
0: .875000282
1: .875
1.235
0: .235
1: .23
/(\.\d\d((?=0)|\d(?=\d)))/
1.230003938
0: .23
1: .23
2:
1.875000282
0: .875
1: .875
2: 5
*** Failers
No match
1.235
No match
/a(?)b/
ab
0: ab
/\b(foo)\s+(\w+)/i
Food is on the foo table
0: foo table
1: foo
2: table
/foo(.*)bar/
The food is under the bar in the barn.
0: food is under the bar in the bar
1: d is under the bar in the
/foo(.*?)bar/
The food is under the bar in the barn.
0: food is under the bar
1: d is under the
/(.*)(\d*)/
I have 2 numbers: 53147
0: I have 2 numbers: 53147
1: I have 2 numbers: 53147
2:
/(.*)(\d+)/
I have 2 numbers: 53147
0: I have 2 numbers: 53147
1: I have 2 numbers: 5314
2: 7
/(.*?)(\d*)/
I have 2 numbers: 53147
0:
1:
2:
/(.*?)(\d+)/
I have 2 numbers: 53147
0: I have 2
1: I have
2: 2
/(.*)(\d+)$/
I have 2 numbers: 53147
0: I have 2 numbers: 53147
1: I have 2 numbers: 5314
2: 7
/(.*?)(\d+)$/
I have 2 numbers: 53147
0: I have 2 numbers: 53147
1: I have 2 numbers:
2: 53147
/(.*)\b(\d+)$/
I have 2 numbers: 53147
0: I have 2 numbers: 53147
1: I have 2 numbers:
2: 53147
/(.*\D)(\d+)$/
I have 2 numbers: 53147
0: I have 2 numbers: 53147
1: I have 2 numbers:
2: 53147
/^\D*(?!123)/
ABC123
0: AB
/^(\D*)(?=\d)(?!123)/
ABC445
0: ABC
1: ABC
*** Failers
No match
ABC123
No match
/^[W-]46]/
W46]789
0: W46]
-46]789
0: -46]
*** Failers
No match
Wall
No match
Zebra
No match
42
No match
[abcd]
No match
]abcd[
No match
/^[W-\]46]/
W46]789
0: W
Wall
0: W
Zebra
0: Z
Xylophone
0: X
42
0: 4
[abcd]
0: [
]abcd[
0: ]
\\backslash
0: \
*** Failers
No match
-46]789
No match
well
No match
/\d\d\/\d\d\/\d\d\d\d/
01/01/2000
0: 01/01/2000
/word (?:[a-zA-Z0-9]+ ){0,10}otherword/
word cat dog elephant mussel cow horse canary baboon snake shark otherword
0: word cat dog elephant mussel cow horse canary baboon snake shark otherword
word cat dog elephant mussel cow horse canary baboon snake shark
No match
/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
No match
/^(a){0,0}/
bcd
0:
abc
0:
aab
0:
/^(a){0,1}/
bcd
0:
abc
0: a
1: a
aab
0: a
1: a
/^(a){0,2}/
bcd
0:
abc
0: a
1: a
aab
0: aa
1: a
/^(a){0,3}/
bcd
0:
abc
0: a
1: a
aab
0: aa
1: a
aaa
0: aaa
1: a
/^(a){0,}/
bcd
0:
abc
0: a
1: a
aab
0: aa
1: a
aaa
0: aaa
1: a
aaaaaaaa
0: aaaaaaaa
1: a
/^(a){1,1}/
bcd
No match
abc
0: a
1: a
aab
0: a
1: a
/^(a){1,2}/
bcd
No match
abc
0: a
1: a
aab
0: aa
1: a
/^(a){1,3}/
bcd
No match
abc
0: a
1: a
aab
0: aa
1: a
aaa
0: aaa
1: a
/^(a){1,}/
bcd
No match
abc
0: a
1: a
aab
0: aa
1: a
aaa
0: aaa
1: a
aaaaaaaa
0: aaaaaaaa
1: a
/.*\.gif/
borfle\nbib.gif\nno
0: bib.gif
/.{0,}\.gif/
borfle\nbib.gif\nno
0: bib.gif
/.*\.gif/m
borfle\nbib.gif\nno
0: bib.gif
/.*\.gif/s
borfle\nbib.gif\nno
0: borfle\x0abib.gif
/.*\.gif/ms
borfle\nbib.gif\nno
0: borfle\x0abib.gif
/.*$/
borfle\nbib.gif\nno
0: no
/.*$/m
borfle\nbib.gif\nno
0: borfle
/.*$/s
borfle\nbib.gif\nno
0: borfle\x0abib.gif\x0ano
/.*$/ms
borfle\nbib.gif\nno
0: borfle\x0abib.gif\x0ano
/.*$/
borfle\nbib.gif\nno\n
0: no
/.*$/m
borfle\nbib.gif\nno\n
0: borfle
/.*$/s
borfle\nbib.gif\nno\n
0: borfle\x0abib.gif\x0ano\x0a
/.*$/ms
borfle\nbib.gif\nno\n
0: borfle\x0abib.gif\x0ano\x0a
/(.*X|^B)/
abcde\n1234Xyz
0: 1234X
1: 1234X
BarFoo
0: B
1: B
*** Failers
No match
abcde\nBar
No match
/(.*X|^B)/m
abcde\n1234Xyz
0: 1234X
1: 1234X
BarFoo
0: B
1: B
abcde\nBar
0: B
1: B
/(.*X|^B)/s
abcde\n1234Xyz
0: abcde\x0a1234X
1: abcde\x0a1234X
BarFoo
0: B
1: B
*** Failers
No match
abcde\nBar
No match
/(.*X|^B)/ms
abcde\n1234Xyz
0: abcde\x0a1234X
1: abcde\x0a1234X
BarFoo
0: B
1: B
abcde\nBar
0: B
1: B
/(?s)(.*X|^B)/
abcde\n1234Xyz
0: abcde\x0a1234X
1: abcde\x0a1234X
BarFoo
0: B
1: B
*** Failers
No match
abcde\nBar
No match
/(?s:.*X|^B)/
abcde\n1234Xyz
0: abcde\x0a1234X
BarFoo
0: B
*** Failers
No match
abcde\nBar
No match
/^.*B/
**** Failers
No match
abc\nB
No match
/(?s)^.*B/
abc\nB
0: abc\x0aB
/(?m)^.*B/
abc\nB
0: B
/(?ms)^.*B/
abc\nB
0: abc\x0aB
/(?ms)^B/
abc\nB
0: B
/(?s)B$/
B\n
0: B
/^[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
0: 123456654321
/^\d\d\d\d\d\d\d\d\d\d\d\d/
123456654321
0: 123456654321
/^[\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d][\d]/
123456654321
0: 123456654321
/^[abc]{12}/
abcabcabcabc
0: abcabcabcabc
/^[a-c]{12}/
abcabcabcabc
0: abcabcabcabc
/^(a|b|c){12}/
abcabcabcabc
0: abcabcabcabc
1: c
/^[abcdefghijklmnopqrstuvwxy0123456789]/
n
0: n
*** Failers
No match
z
No match
/abcde{0,0}/
abcd
0: abcd
*** Failers
No match
abce
No match
/ab[cd]{0,0}e/
abe
0: abe
*** Failers
No match
abcde
No match
/ab(c){0,0}d/
abd
0: abd
*** Failers
No match
abcd
No match
/a(b*)/
a
0: a
1:
ab
0: ab
1: b
abbbb
0: abbbb
1: bbbb
*** Failers
0: a
1:
bbbbb
No match
/ab\d{0}e/
abe
0: abe
*** Failers
No match
ab1e
No match
/"([^\\"]+|\\.)*"/
the \"quick\" brown fox
0: "quick"
1: quick
\"the \\\"quick\\\" brown fox\"
0: "the \"quick\" brown fox"
1: brown fox
/.*?/g,aftertext
abc
0:
0+ abc
0: a
0+ bc
0:
0+ bc
0: b
0+ c
0:
0+ c
0: c
0+
0:
0+
/\b/g,aftertext
abc
0:
0+ abc
0:
0+
/\b/g,aftertext
abc
0:
0+ abc
0:
0+
//g
abc
0:
0:
0:
0:
/<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>
0: <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>
1: BGCOLOR='#DBE9E9'
2: align=left valign=top
3: 43.
4: <a href='joblist.cfm?JobID=94 6735&Keyword='>Word Processor<BR>(N-1286)
5:
6:
7: <unset>
8: align=left valign=top
9: Lega lstaff.com
10: align=left valign=top
11: CA - Statewide
/a[^a]b/
acb
0: acb
a\nb
0: a\x0ab
/a.b/
acb
0: acb
*** Failers
No match
a\nb
No match
/a[^a]b/s
acb
0: acb
a\nb
0: a\x0ab
/a.b/s
acb
0: acb
a\nb
0: a\x0ab
/^(b+?|a){1,2}?c/
bac
0: bac
1: a
bbac
0: bbac
1: a
bbbac
0: bbbac
1: a
bbbbac
0: bbbbac
1: a
bbbbbac
0: bbbbbac
1: a
/^(b+|a){1,2}?c/
bac
0: bac
1: a
bbac
0: bbac
1: a
bbbac
0: bbbac
1: a
bbbbac
0: bbbbac
1: a
bbbbbac
0: bbbbbac
1: a
/(?!\A)x/m
x\nb\n
No match
a\bx\n
0: x
/\x0{ab}/
\0{ab}
0: \x00{ab}
/(A|B)*?CD/
CD
0: CD
/(A|B)*CD/
CD
0: CD
/(AB)*?\1/
ABABAB
0: ABAB
1: AB
/(AB)*\1/
ABABAB
0: ABABAB
1: AB
/(?<!bar)foo/
foo
0: foo
catfood
0: foo
arfootle
0: foo
rfoosh
0: foo
*** Failers
No match
barfoo
No match
towbarfoo
No match
/\w{3}(?<!bar)foo/
catfood
0: catfoo
*** Failers
No match
foo
No match
barfoo
No match
towbarfoo
No match
/(?<=(foo)a)bar/
fooabar
0: bar
1: foo
*** Failers
No match
bar
No match
foobbar
No match
/\Aabc\z/m
abc
0: abc
*** Failers
No match
abc\n
No match
qqq\nabc
No match
abc\nzzz
No match
qqq\nabc\nzzz
No match
"(?>.*/)foo"
/this/is/a/very/long/line/in/deed/with/very/many/slashes/in/it/you/see/
No match
"(?>.*/)foo"
/this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo
0: /this/is/a/very/long/line/in/deed/with/very/many/slashes/in/and/foo
/(?>(\.\d\d[1-9]?))\d+/
1.230003938
0: .230003938
1: .23
1.875000282
0: .875000282
1: .875
*** Failers
No match
1.235
No match
/^((?>\w+)|(?>\s+))*$/
now is the time for all good men to come to the aid of the party
0: now is the time for all good men to come to the aid of the party
1: party
*** Failers
No match
this is not a line with only words and spaces!
No match
/(\d+)(\w)/
12345a
0: 12345a
1: 12345
2: a
12345+
0: 12345
1: 1234
2: 5
/((?>\d+))(\w)/
12345a
0: 12345a
1: 12345
2: a
*** Failers
No match
12345+
No match
/(?>a+)b/
aaab
0: aaab
/((?>a+)b)/
aaab
0: aaab
1: aaab
/(?>(a+))b/
aaab
0: aaab
1: aaa
/(?>b)+/
aaabbbccc
0: bbb
/(?>a+|b+|c+)*c/
aaabbbbccccd
0: aaabbbbc
/((?>[^()]+)|\([^()]*\))+/
((abc(ade)ufh()()x
0: abc(ade)ufh()()x
1: x
/\(((?>[^()]+)|\([^()]+\))+\)/
(abc)
0: (abc)
1: abc
(abc(def)xyz)
0: (abc(def)xyz)
1: xyz
*** Failers
No match
((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
/a(?-i)b/i
ab
0: ab
Ab
0: Ab
*** Failers
No match
aB
No match
AB
No match
/(a (?x)b c)d e/
a bcd e
0: a bcd e
1: a bc
*** Failers
No match
a b cd e
No match
abcd e
No match
a bcde
No match
/(a b(?x)c d (?-x)e f)/
a bcde f
0: a bcde f
1: a bcde f
*** Failers
No match
abcdef
No match
/(a(?i)b)c/
abc
0: abc
1: ab
aBc
0: aBc
1: aB
*** Failers
No match
abC
No match
aBC
No match
Abc
No match
ABc
No match
ABC
No match
AbC
No match
/a(?i:b)c/
abc
0: abc
aBc
0: aBc
*** Failers
No match
ABC
No match
abC
No match
aBC
No match
/a(?i:b)*c/
aBc
0: aBc
aBBc
0: aBBc
*** Failers
No match
aBC
No match
aBBC
No match
/a(?=b(?i)c)\w\wd/
abcd
0: abcd
abCd
0: abCd
*** Failers
No match
aBCd
No match
abcD
No match
/(?s-i:more.*than).*million/i
more than million
0: more than million
more than MILLION
0: more than MILLION
more \n than Million
0: more \x0a than Million
*** Failers
No match
MORE THAN MILLION
No match
more \n than \n million
No match
/(?:(?s-i)more.*than).*million/i
more than million
0: more than million
more than MILLION
0: more than MILLION
more \n than Million
0: more \x0a than Million
*** Failers
No match
MORE THAN MILLION
No match
more \n than \n million
No match
/(?>a(?i)b+)+c/
abc
0: abc
aBbc
0: aBbc
aBBc
0: aBBc
*** Failers
No match
Abc
No match
abAb
No match
abbC
No match
/(?=a(?i)b)\w\wc/
abc
0: abc
aBc
0: aBc
*** Failers
No match
Ab
No match
abC
No match
aBC
No match
/(?<=a(?i)b)(\w\w)c/
abxxc
0: xxc
1: xx
aBxxc
0: xxc
1: xx
*** Failers
No match
Abxxc
No match
ABxxc
No match
abxxC
No match
/(?:(a)|b)(?(1)A|B)/
aA
0: aA
1: a
bB
0: bB
*** Failers
No match
aB
No match
bA
No match
/^(a)?(?(1)a|b)+$/
aa
0: aa
1: a
b
0: b
bb
0: bb
*** Failers
No match
ab
No match
# Perl gets this next one wrong if the pattern ends with $; in that case it
# fails to match "12".
/^(?(?=abc)\w{3}:|\d\d)/
abc:
0: abc:
12
0: 12
123
0: 12
*** Failers
No match
xyz
No match
/^(?(?!abc)\d\d|\w{3}:)$/
abc:
0: abc:
12
0: 12
*** Failers
No match
123
No match
xyz
No match
/(?(?<=foo)bar|cat)/
foobar
0: bar
cat
0: cat
fcat
0: cat
focat
0: cat
*** Failers
No match
foocat
No match
/(?(?<!foo)cat|bar)/
foobar
0: bar
cat
0: cat
fcat
0: cat
focat
0: cat
*** Failers
No match
foocat
No match
/( \( )? [^()]+ (?(1) \) |) /x
abcd
0: abcd
(abcd)
0: (abcd)
1: (
the quick (abcd) fox
0: the quick
(abcd
0: abcd
/( \( )? [^()]+ (?(1) \) ) /x
abcd
0: abcd
(abcd)
0: (abcd)
1: (
the quick (abcd) fox
0: the quick
(abcd
0: abcd
/^(?(2)a|(1)(2))+$/
12
0: 12
1: 1
2: 2
12a
0: 12a
1: 1
2: 2
12aa
0: 12aa
1: 1
2: 2
*** Failers
No match
1234
No match
/((?i)blah)\s+\1/
blah blah
0: blah blah
1: blah
BLAH BLAH
0: BLAH BLAH
1: BLAH
Blah Blah
0: Blah Blah
1: Blah
blaH blaH
0: blaH blaH
1: blaH
*** Failers
No match
blah BLAH
No match
Blah blah
No match
blaH blah
No match
/((?i)blah)\s+(?i:\1)/
blah blah
0: blah blah
1: blah
BLAH BLAH
0: BLAH BLAH
1: BLAH
Blah Blah
0: Blah Blah
1: Blah
blaH blaH
0: blaH blaH
1: blaH
blah BLAH
0: blah BLAH
1: blah
Blah blah
0: Blah blah
1: Blah
blaH blah
0: blaH blah
1: blaH
/(?>a*)*/
a
0: a
aa
0: aa
aaaa
0: aaaa
/(abc|)+/
abc
0: abc
1:
abcabc
0: abcabc
1:
abcabcabc
0: abcabcabc
1:
xyz
0:
1:
/([a]*)*/
a
0: a
1:
aaaaa
0: aaaaa
1:
/([ab]*)*/
a
0: a
1:
b
0: b
1:
ababab
0: ababab
1:
aaaabcde
0: aaaab
1:
bbbb
0: bbbb
1:
/([^a]*)*/
b
0: b
1:
bbbb
0: bbbb
1:
aaa
0:
1:
/([^ab]*)*/
cccc
0: cccc
1:
abab
0:
1:
/([a]*?)*/
a
0:
1:
aaaa
0:
1:
/([ab]*?)*/
a
0:
1:
b
0:
1:
abab
0:
1:
baba
0:
1:
/([^a]*?)*/
b
0:
1:
bbbb
0:
1:
aaa
0:
1:
/([^ab]*?)*/
c
0:
1:
cccc
0:
1:
baba
0:
1:
/(?>a*)*/
a
0: a
aaabcde
0: aaa
/((?>a*))*/
aaaaa
0: aaaaa
1:
aabbaa
0: aa
1:
/((?>a*?))*/
aaaaa
0:
1:
aabbaa
0:
1:
/(?(?=[^a-z]+[a-z]) \d{2}-[a-z]{3}-\d{2} | \d{2}-\d{2}-\d{2} ) /x
12-sep-98
0: 12-sep-98
12-09-98
0: 12-09-98
*** Failers
No match
sep-12-98
No match
/(?<=(foo))bar\1/
foobarfoo
0: barfoo
1: foo
foobarfootling
0: barfoo
1: foo
*** Failers
No match
foobar
No match
barfoo
No match
/(?i:saturday|sunday)/
saturday
0: saturday
sunday
0: sunday
Saturday
0: Saturday
Sunday
0: Sunday
SATURDAY
0: SATURDAY
SUNDAY
0: SUNDAY
SunDay
0: SunDay
/(a(?i)bc|BB)x/
abcx
0: abcx
1: abc
aBCx
0: aBCx
1: aBC
bbx
0: bbx
1: bb
BBx
0: BBx
1: BB
*** Failers
No match
abcX
No match
aBCX
No match
bbX
No match
BBX
No match
/^([ab](?i)[cd]|[ef])/
ac
0: ac
1: ac
aC
0: aC
1: aC
bD
0: bD
1: bD
elephant
0: e
1: e
Europe
0: E
1: E
frog
0: f
1: f
France
0: F
1: F
*** Failers
No match
Africa
No match
/^(ab|a(?i)[b-c](?m-i)d|x(?i)y|z)/
ab
0: ab
1: ab
aBd
0: aBd
1: aBd
xy
0: xy
1: xy
xY
0: xY
1: xY
zebra
0: z
1: z
Zambesi
0: Z
1: Z
*** Failers
No match
aCD
No match
XY
No match
/(?<=foo\n)^bar/m
foo\nbar
0: bar
*** Failers
No match
bar
No match
baz\nbar
No match
/(?<=(?<!foo)bar)baz/
barbaz
0: baz
barbarbaz
0: baz
koobarbaz
0: baz
*** Failers
No match
baz
No match
foobarbaz
No match
/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/
No match
/recursive references in Perl, as far as 5.11.3 - see some stuff in test #2./
No match
/^(a\1?){4}$/
a
No match
aa
No match
aaa
No match
aaaaa
0: aaaaa
1: a
aaaaaaa
0: aaaaaaa
1: a
aaaaaaaa
No match
aaaaaaaaa
No match
aaaaaaaaaa
0: aaaaaaaaaa
1: aaaa
aaaaaaaaaaa
No match
aaaaaaaaaaaa
No match
aaaaaaaaaaaaa
No match
aaaaaaaaaaaaaa
No match
aaaaaaaaaaaaaaa
No match
aaaaaaaaaaaaaaaa
No match
/^(a\1?)(a\1?)(a\2?)(a\3?)$/
a
No match
aa
No match
aaa
No match
aaaa
0: aaaa
1: a
2: a
3: a
4: a
aaaaa
0: aaaaa
1: a
2: aa
3: a
4: a
aaaaaa
0: aaaaaa
1: a
2: aa
3: a
4: aa
aaaaaaa
0: aaaaaaa
1: a
2: aa
3: aaa
4: a
aaaaaaaa
No match
aaaaaaaaa
No match
aaaaaaaaaa
0: aaaaaaaaaa
1: a
2: aa
3: aaa
4: aaaa
aaaaaaaaaaa
No match
aaaaaaaaaaaa
No match
aaaaaaaaaaaaa
No match
aaaaaaaaaaaaaa
No match
aaaaaaaaaaaaaaa
No match
aaaaaaaaaaaaaaaa
No match
/The following tests are taken from the Perl 5.005 test suite; some of them/
/are compatible with 5.004, but I'd rather not have to sort them out./
No match
/abc/
abc
0: abc
xabcy
0: abc
ababc
0: abc
*** Failers
No match
xbc
No match
axc
No match
abx
No match
/ab*c/
abc
0: abc
/ab*bc/
abc
0: abc
abbc
0: abbc
abbbbc
0: abbbbc
/.{1}/
abbbbc
0: a
/.{3,4}/
abbbbc
0: abbb
/ab{0,}bc/
abbbbc
0: abbbbc
/ab+bc/
abbc
0: abbc
*** Failers
No match
abc
No match
abq
No match
/ab{1,}bc/
/ab+bc/
abbbbc
0: abbbbc
/ab{1,}bc/
abbbbc
0: abbbbc
/ab{1,3}bc/
abbbbc
0: abbbbc
/ab{3,4}bc/
abbbbc
0: abbbbc
/ab{4,5}bc/
*** Failers
No match
abq
No match
abbbbc
No match
/ab?bc/
abbc
0: abbc
abc
0: abc
/ab{0,1}bc/
abc
0: abc
/ab?bc/
/ab?c/
abc
0: abc
/ab{0,1}c/
abc
0: abc
/^abc$/
abc
0: abc
*** Failers
No match
abbbbc
No match
abcc
No match
/^abc/
abcc
0: abc
/^abc$/
/abc$/
aabc
0: abc
*** Failers
No match
aabc
0: abc
aabcd
No match
/^/
abc
0:
/$/
abc
0:
/a.c/
abc
0: abc
axc
0: axc
/a.*c/
axyzc
0: axyzc
/a[bc]d/
abd
0: abd
*** Failers
No match
axyzd
No match
abc
No match
/a[b-d]e/
ace
0: ace
/a[b-d]/
aac
0: ac
/a[-b]/
a-
0: a-
/a[b-]/
a-
0: a-
/a]/
a]
0: a]
/a[]]b/
a]b
0: a]b
/a[^bc]d/
aed
0: aed
*** Failers
No match
abd
No match
abd
No match
/a[^-b]c/
adc
0: adc
/a[^]b]c/
adc
0: adc
*** Failers
No match
a-c
0: a-c
a]c
No match
/\ba\b/
a-
0: a
-a
0: a
-a-
0: a
/\by\b/
*** Failers
No match
xy
No match
yz
No match
xyz
No match
/\Ba\B/
*** Failers
0: a
a-
No match
-a
No match
-a-
No match
/\By\b/
xy
0: y
/\by\B/
yz
0: y
/\By\B/
xyz
0: y
/\w/
a
0: a
/\W/
-
0: -
*** Failers
0: *
-
0: -
a
No match
/a\sb/
a b
0: a b
/a\Sb/
a-b
0: a-b
*** Failers
No match
a-b
0: a-b
a b
No match
/\d/
1
0: 1
/\D/
-
0: -
*** Failers
0: *
-
0: -
1
No match
/[\w]/
a
0: a
/[\W]/
-
0: -
*** Failers
0: *
-
0: -
a
No match
/a[\s]b/
a b
0: a b
/a[\S]b/
a-b
0: a-b
*** Failers
No match
a-b
0: a-b
a b
No match
/[\d]/
1
0: 1
/[\D]/
-
0: -
*** Failers
0: *
-
0: -
1
No match
/ab|cd/
abc
0: ab
abcd
0: ab
/()ef/
def
0: ef
1:
/$b/
/a\(b/
a(b
0: a(b
/a\(*b/
ab
0: ab
a((b
0: a((b
/a\\b/
a\\b
0: a\b
/((a))/
abc
0: a
1: a
2: a
/(a)b(c)/
abc
0: abc
1: a
2: c
/a+b+c/
aabbabc
0: abc
/a{1,}b{1,}c/
aabbabc
0: abc
/a.+?c/
abcabc
0: abc
/(a+|b)*/
ab
0: ab
1: b
/(a+|b){0,}/
ab
0: ab
1: b
/(a+|b)+/
ab
0: ab
1: b
/(a+|b){1,}/
ab
0: ab
1: b
/(a+|b)?/
ab
0: a
1: a
/(a+|b){0,1}/
ab
0: a
1: a
/[^ab]*/
cde
0: cde
/abc/
*** Failers
No match
b
No match
/a*/
/([abc])*d/
abbbcd
0: abbbcd
1: c
/([abc])*bcd/
abcd
0: abcd
1: a
/a|b|c|d|e/
e
0: e
/(a|b|c|d|e)f/
ef
0: ef
1: e
/abcd*efg/
abcdefg
0: abcdefg
/ab*/
xabyabbbz
0: ab
xayabbbz
0: a
/(ab|cd)e/
abcde
0: cde
1: cd
/[abhgefdc]ij/
hij
0: hij
/^(ab|cd)e/
/(abc|)ef/
abcdef
0: ef
1:
/(a|b)c*d/
abcd
0: bcd
1: b
/(ab|ab*)bc/
abc
0: abc
1: a
/a([bc]*)c*/
abc
0: abc
1: bc
/a([bc]*)(c*d)/
abcd
0: abcd
1: bc
2: d
/a([bc]+)(c*d)/
abcd
0: abcd
1: bc
2: d
/a([bc]*)(c+d)/
abcd
0: abcd
1: b
2: cd
/a[bcd]*dcdcde/
adcdcde
0: adcdcde
/a[bcd]+dcdcde/
*** Failers
No match
abcde
No match
adcdcde
No match
/(ab|a)b*c/
abc
0: abc
1: ab
/((a)(b)c)(d)/
abcd
0: abcd
1: abc
2: a
3: b
4: d
/[a-zA-Z_][a-zA-Z0-9_]*/
alpha
0: alpha
/^a(bc+|b[eh])g|.h$/
abh
0: bh
/(bc+d$|ef*g.|h?i(j|k))/
effgz
0: effgz
1: effgz
ij
0: ij
1: ij
2: j
reffgz
0: effgz
1: effgz
*** Failers
No match
effg
No match
bcdd
No match
/((((((((((a))))))))))/
a
0: a
1: a
2: a
3: a
4: a
5: a
6: a
7: a
8: a
9: a
10: a
/((((((((((a))))))))))\10/
aa
0: aa
1: a
2: a
3: a
4: a
5: a
6: a
7: a
8: a
9: a
10: a
/(((((((((a)))))))))/
a
0: a
1: a
2: a
3: a
4: a
5: a
6: a
7: a
8: a
9: a
/multiple words of text/
*** Failers
No match
aa
No match
uh-uh
No match
/multiple words/
multiple words, yeah
0: multiple words
/(.*)c(.*)/
abcde
0: abcde
1: ab
2: de
/\((.*), (.*)\)/
(a, b)
0: (a, b)
1: a
2: b
/[k]/
/abcd/
abcd
0: abcd
/a(bc)d/
abcd
0: abcd
1: bc
/a[-]?c/
ac
0: ac
/(abc)\1/
abcabc
0: abcabc
1: abc
/([a-c]*)\1/
abcabc
0: abcabc
1: abc
/(a)|\1/
a
0: a
1: a
*** Failers
0: a
1: a
ab
0: a
1: a
x
No match
/(([a-c])b*?\2)*/
ababbbcbc
0: ababb
1: bb
2: b
/(([a-c])b*?\2){3}/
ababbbcbc
0: ababbbcbc
1: cbc
2: c
/((\3|b)\2(a)x)+/
aaaxabaxbaaxbbax
0: bbax
1: bbax
2: b
3: a
/((\3|b)\2(a)){2,}/
bbaababbabaaaaabbaaaabba
0: bbaaaabba
1: bba
2: b
3: a
/abc/i
ABC
0: ABC
XABCY
0: ABC
ABABC
0: ABC
*** Failers
No match
aaxabxbaxbbx
No match
XBC
No match
AXC
No match
ABX
No match
/ab*c/i
ABC
0: ABC
/ab*bc/i
ABC
0: ABC
ABBC
0: ABBC
/ab*?bc/i
ABBBBC
0: ABBBBC
/ab{0,}?bc/i
ABBBBC
0: ABBBBC
/ab+?bc/i
ABBC
0: ABBC
/ab+bc/i
*** Failers
No match
ABC
No match
ABQ
No match
/ab{1,}bc/i
/ab+bc/i
ABBBBC
0: ABBBBC
/ab{1,}?bc/i
ABBBBC
0: ABBBBC
/ab{1,3}?bc/i
ABBBBC
0: ABBBBC
/ab{3,4}?bc/i
ABBBBC
0: ABBBBC
/ab{4,5}?bc/i
*** Failers
No match
ABQ
No match
ABBBBC
No match
/ab??bc/i
ABBC
0: ABBC
ABC
0: ABC
/ab{0,1}?bc/i
ABC
0: ABC
/ab??bc/i
/ab??c/i
ABC
0: ABC
/ab{0,1}?c/i
ABC
0: ABC
/^abc$/i
ABC
0: ABC
*** Failers
No match
ABBBBC
No match
ABCC
No match
/^abc/i
ABCC
0: ABC
/^abc$/i
/abc$/i
AABC
0: ABC
/^/i
ABC
0:
/$/i
ABC
0:
/a.c/i
ABC
0: ABC
AXC
0: AXC
/a.*?c/i
AXYZC
0: AXYZC
/a.*c/i
*** Failers
No match
AABC
0: AABC
AXYZD
No match
/a[bc]d/i
ABD
0: ABD
/a[b-d]e/i
ACE
0: ACE
*** Failers
No match
ABC
No match
ABD
No match
/a[b-d]/i
AAC
0: AC
/a[-b]/i
A-
0: A-
/a[b-]/i
A-
0: A-
/a]/i
A]
0: A]
/a[]]b/i
A]B
0: A]B
/a[^bc]d/i
AED
0: AED
/a[^-b]c/i
ADC
0: ADC
*** Failers
No match
ABD
No match
A-C
No match
/a[^]b]c/i
ADC
0: ADC
/ab|cd/i
ABC
0: AB
ABCD
0: AB
/()ef/i
DEF
0: EF
1:
/$b/i
*** Failers
No match
A]C
No match
B
No match
/a\(b/i
A(B
0: A(B
/a\(*b/i
AB
0: AB
A((B
0: A((B
/a\\b/i
A\\b
0: A\b
a\\B
0: a\B
/((a))/i
ABC
0: A
1: A
2: A
/(a)b(c)/i
ABC
0: ABC
1: A
2: C
/a+b+c/i
AABBABC
0: ABC
/a{1,}b{1,}c/i
AABBABC
0: ABC
/a.+?c/i
ABCABC
0: ABC
/a.*?c/i
ABCABC
0: ABC
/a.{0,5}?c/i
ABCABC
0: ABC
/(a+|b)*/i
AB
0: AB
1: B
/(a+|b){0,}/i
AB
0: AB
1: B
/(a+|b)+/i
AB
0: AB
1: B
/(a+|b){1,}/i
AB
0: AB
1: B
/(a+|b)?/i
AB
0: A
1: A
/(a+|b){0,1}/i
AB
0: A
1: A
/(a+|b){0,1}?/i
AB
0:
/[^ab]*/i
CDE
0: CDE
/abc/i
/a*/i
/([abc])*d/i
ABBBCD
0: ABBBCD
1: C
/([abc])*bcd/i
ABCD
0: ABCD
1: A
/a|b|c|d|e/i
E
0: E
/(a|b|c|d|e)f/i
EF
0: EF
1: E
/abcd*efg/i
ABCDEFG
0: ABCDEFG
/ab*/i
XABYABBBZ
0: AB
XAYABBBZ
0: A
/(ab|cd)e/i
ABCDE
0: CDE
1: CD
/[abhgefdc]ij/i
HIJ
0: HIJ
/^(ab|cd)e/i
ABCDE
No match
/(abc|)ef/i
ABCDEF
0: EF
1:
/(a|b)c*d/i
ABCD
0: BCD
1: B
/(ab|ab*)bc/i
ABC
0: ABC
1: A
/a([bc]*)c*/i
ABC
0: ABC
1: BC
/a([bc]*)(c*d)/i
ABCD
0: ABCD
1: BC
2: D
/a([bc]+)(c*d)/i
ABCD
0: ABCD
1: BC
2: D
/a([bc]*)(c+d)/i
ABCD
0: ABCD
1: B
2: CD
/a[bcd]*dcdcde/i
ADCDCDE
0: ADCDCDE
/a[bcd]+dcdcde/i
/(ab|a)b*c/i
ABC
0: ABC
1: AB
/((a)(b)c)(d)/i
ABCD
0: ABCD
1: ABC
2: A
3: B
4: D
/[a-zA-Z_][a-zA-Z0-9_]*/i
ALPHA
0: ALPHA
/^a(bc+|b[eh])g|.h$/i
ABH
0: BH
/(bc+d$|ef*g.|h?i(j|k))/i
EFFGZ
0: EFFGZ
1: EFFGZ
IJ
0: IJ
1: IJ
2: J
REFFGZ
0: EFFGZ
1: EFFGZ
*** Failers
No match
ADCDCDE
No match
EFFG
No match
BCDD
No match
/((((((((((a))))))))))/i
A
0: A
1: A
2: A
3: A
4: A
5: A
6: A
7: A
8: A
9: A
10: A
/((((((((((a))))))))))\10/i
AA
0: AA
1: A
2: A
3: A
4: A
5: A
6: A
7: A
8: A
9: A
10: A
/(((((((((a)))))))))/i
A
0: A
1: A
2: A
3: A
4: A
5: A
6: A
7: A
8: A
9: A
/(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))/i
A
0: A
1: A
/(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))/i
C
0: C
1: C
/multiple words of text/i
*** Failers
No match
AA
No match
UH-UH
No match
/multiple words/i
MULTIPLE WORDS, YEAH
0: MULTIPLE WORDS
/(.*)c(.*)/i
ABCDE
0: ABCDE
1: AB
2: DE
/\((.*), (.*)\)/i
(A, B)
0: (A, B)
1: A
2: B
/[k]/i
/abcd/i
ABCD
0: ABCD
/a(bc)d/i
ABCD
0: ABCD
1: BC
/a[-]?c/i
AC
0: AC
/(abc)\1/i
ABCABC
0: ABCABC
1: ABC
/([a-c]*)\1/i
ABCABC
0: ABCABC
1: ABC
/a(?!b)./
abad
0: ad
/a(?=d)./
abad
0: ad
/a(?=c|d)./
abad
0: ad
/a(?:b|c|d)(.)/
ace
0: ace
1: e
/a(?:b|c|d)*(.)/
ace
0: ace
1: e
/a(?:b|c|d)+?(.)/
ace
0: ace
1: e
acdbcdbe
0: acd
1: d
/a(?:b|c|d)+(.)/
acdbcdbe
0: acdbcdbe
1: e
/a(?:b|c|d){2}(.)/
acdbcdbe
0: acdb
1: b
/a(?:b|c|d){4,5}(.)/
acdbcdbe
0: acdbcdb
1: b
/a(?:b|c|d){4,5}?(.)/
acdbcdbe
0: acdbcd
1: d
/((foo)|(bar))*/
foobar
0: foobar
1: bar
2: foo
3: bar
/a(?:b|c|d){6,7}(.)/
acdbcdbe
0: acdbcdbe
1: e
/a(?:b|c|d){6,7}?(.)/
acdbcdbe
0: acdbcdbe
1: e
/a(?:b|c|d){5,6}(.)/
acdbcdbe
0: acdbcdbe
1: e
/a(?:b|c|d){5,6}?(.)/
acdbcdbe
0: acdbcdb
1: b
/a(?:b|c|d){5,7}(.)/
acdbcdbe
0: acdbcdbe
1: e
/a(?:b|c|d){5,7}?(.)/
acdbcdbe
0: acdbcdb
1: b
/a(?:b|(c|e){1,2}?|d)+?(.)/
ace
0: ace
1: c
2: e
/^(.+)?B/
AB
0: AB
1: A
/^([^a-z])|(\^)$/
.
0: .
1: .
/^[<>]&/
<&OUT
0: <&
/^(a\1?){4}$/
aaaaaaaaaa
0: aaaaaaaaaa
1: aaaa
*** Failers
No match
AB
No match
aaaaaaaaa
No match
aaaaaaaaaaa
No match
/^(a(?(1)\1)){4}$/
aaaaaaaaaa
0: aaaaaaaaaa
1: aaaa
*** Failers
No match
aaaaaaaaa
No match
aaaaaaaaaaa
No match
/(?:(f)(o)(o)|(b)(a)(r))*/
foobar
0: foobar
1: f
2: o
3: o
4: b
5: a
6: r
/(?<=a)b/
ab
0: b
*** Failers
No match
cb
No match
b
No match
/(?<!c)b/
ab
0: b
b
0: b
b
0: b
/(?:..)*a/
aba
0: aba
/(?:..)*?a/
aba
0: a
/^(?:b|a(?=(.)))*\1/
abc
0: ab
1: b
/^(){3,5}/
abc
0:
1:
/^(a+)*ax/
aax
0: aax
1: a
/^((a|b)+)*ax/
aax
0: aax
1: a
2: a
/^((a|bc)+)*ax/
aax
0: aax
1: a
2: a
/(a|x)*ab/
cab
0: ab
/(a)*ab/
cab
0: ab
/(?:(?i)a)b/
ab
0: ab
/((?i)a)b/
ab
0: ab
1: a
/(?:(?i)a)b/
Ab
0: Ab
/((?i)a)b/
Ab
0: Ab
1: A
/(?:(?i)a)b/
*** Failers
No match
cb
No match
aB
No match
/((?i)a)b/
/(?i:a)b/
ab
0: ab
/((?i:a))b/
ab
0: ab
1: a
/(?i:a)b/
Ab
0: Ab
/((?i:a))b/
Ab
0: Ab
1: A
/(?i:a)b/
*** Failers
No match
aB
No match
aB
No match
/((?i:a))b/
/(?:(?-i)a)b/i
ab
0: ab
/((?-i)a)b/i
ab
0: ab
1: a
/(?:(?-i)a)b/i
aB
0: aB
/((?-i)a)b/i
aB
0: aB
1: a
/(?:(?-i)a)b/i
*** Failers
No match
aB
0: aB
Ab
No match
/((?-i)a)b/i
/(?:(?-i)a)b/i
aB
0: aB
/((?-i)a)b/i
aB
0: aB
1: a
/(?:(?-i)a)b/i
*** Failers
No match
Ab
No match
AB
No match
/((?-i)a)b/i
/(?-i:a)b/i
ab
0: ab
/((?-i:a))b/i
ab
0: ab
1: a
/(?-i:a)b/i
aB
0: aB
/((?-i:a))b/i
aB
0: aB
1: a
/(?-i:a)b/i
*** Failers
No match
AB
No match
Ab
No match
/((?-i:a))b/i
/(?-i:a)b/i
aB
0: aB
/((?-i:a))b/i
aB
0: aB
1: a
/(?-i:a)b/i
*** Failers
No match
Ab
No match
AB
No match
/((?-i:a))b/i
/((?-i:a.))b/i
*** Failers
No match
AB
No match
a\nB
No match
/((?s-i:a.))b/i
a\nB
0: a\x0aB
1: a\x0a
/(?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b)))/
cabbbb
0: cabbbb
/(?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb)))/
caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
0: caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
/(ab)\d\1/i
Ab4ab
0: Ab4ab
1: Ab
ab4Ab
0: ab4Ab
1: ab
/foo\w*\d{4}baz/
foobar1234baz
0: foobar1234baz
/x(~~)*(?:(?:F)?)?/
x~~
0: x~~
1: ~~
/^a(?#xxx){3}c/
aaac
0: aaac
/^a (?#xxx) (?#yyy) {3}c/x
aaac
0: aaac
/(?<![cd])b/
*** Failers
No match
B\nB
No match
dbcb
No match
/(?<![cd])[ab]/
dbaacb
0: a
/(?<!(c|d))b/
/(?<!(c|d))[ab]/
dbaacb
0: a
/(?<!cd)[ab]/
cdaccb
0: b
/^(?:a?b?)*$/
\
0:
a
0: a
ab
0: ab
aaa
0: aaa
*** Failers
No match
dbcb
No match
a--
No match
aa--
No match
/((?s)^a(.))((?m)^b$)/
a\nb\nc\n
0: a\x0ab
1: a\x0a
2: \x0a
3: b
/((?m)^b$)/
a\nb\nc\n
0: b
1: b
/(?m)^b/
a\nb\n
0: b
/(?m)^(b)/
a\nb\n
0: b
1: b
/((?m)^b)/
a\nb\n
0: b
1: b
/\n((?m)^b)/
a\nb\n
0: \x0ab
1: b
/((?s).)c(?!.)/
a\nb\nc\n
0: \x0ac
1: \x0a
a\nb\nc\n
0: \x0ac
1: \x0a
/((?s)b.)c(?!.)/
a\nb\nc\n
0: b\x0ac
1: b\x0a
a\nb\nc\n
0: b\x0ac
1: b\x0a
/^b/
/()^b/
*** Failers
No match
a\nb\nc\n
No match
a\nb\nc\n
No match
/((?m)^b)/
a\nb\nc\n
0: b
1: b
/(x)?(?(1)a|b)/
*** Failers
No match
a
No match
a
No match
/(x)?(?(1)b|a)/
a
0: a
/()?(?(1)b|a)/
a
0: a
/()(?(1)b|a)/
/()?(?(1)a|b)/
a
0: a
1:
/^(\()?blah(?(1)(\)))$/
(blah)
0: (blah)
1: (
2: )
blah
0: blah
*** Failers
No match
a
No match
blah)
No match
(blah
No match
/^(\(+)?blah(?(1)(\)))$/
(blah)
0: (blah)
1: (
2: )
blah
0: blah
*** Failers
No match
blah)
No match
(blah
No match
/(?(?!a)a|b)/
/(?(?!a)b|a)/
a
0: a
/(?(?=a)b|a)/
*** Failers
No match
a
No match
a
No match
/(?(?=a)a|b)/
a
0: a
/(?=(a+?))(\1ab)/
aaab
0: aab
1: a
2: aab
/^(?=(a+?))\1ab/
/(\w+:)+/
one:
0: one:
1: one:
/$(?<=^(a))/
a
0:
1: a
/(?=(a+?))(\1ab)/
aaab
0: aab
1: a
2: aab
/^(?=(a+?))\1ab/
*** Failers
No match
aaab
No match
aaab
No match
/([\w:]+::)?(\w+)$/
abcd
0: abcd
1: <unset>
2: abcd
xy:z:::abcd
0: xy:z:::abcd
1: xy:z:::
2: abcd
/^[^bcd]*(c+)/
aexycd
0: aexyc
1: c
/(a*)b+/
caab
0: aab
1: aa
/([\w:]+::)?(\w+)$/
abcd
0: abcd
1: <unset>
2: abcd
xy:z:::abcd
0: xy:z:::abcd
1: xy:z:::
2: abcd
*** Failers
0: Failers
1: <unset>
2: Failers
abcd:
No match
abcd:
No match
/^[^bcd]*(c+)/
aexycd
0: aexyc
1: c
/(>a+)ab/
/(?>a+)b/
aaab
0: aaab
/([[:]+)/
a:[b]:
0: :[
1: :[
/([[=]+)/
a=[b]=
0: =[
1: =[
/([[.]+)/
a.[b].
0: .[
1: .[
/((?>a+)b)/
aaab
0: aaab
1: aaab
/(?>(a+))b/
aaab
0: aaab
1: aaa
/((?>[^()]+)|\([^()]*\))+/
((abc(ade)ufh()()x
0: abc(ade)ufh()()x
1: x
/a\Z/
*** Failers
No match
aaab
No match
a\nb\n
No match
/b\Z/
a\nb\n
0: b
/b\z/
/b\Z/
a\nb
0: b
/b\z/
a\nb
0: b
*** Failers
No match
/^(?>(?(1)\.|())[^\W_](?>[a-z0-9-]*[^\W_])?)+$/
a
0: a
1:
abc
0: abc
1:
a-b
0: a-b
1:
0-9
0: 0-9
1:
a.b
0: a.b
1:
5.6.7
0: 5.6.7
1:
the.quick.brown.fox
0: the.quick.brown.fox
1:
a100.b200.300c
0: a100.b200.300c
1:
12-ab.1245
0: 12-ab.1245
1:
*** Failers
No match
\
No match
.a
No match
-a
No match
a-
No match
a.
No match
a_b
No match
a.-
No match
a..
No match
ab..bc
No match
the.quick.brown.fox-
No match
the.quick.brown.fox.
No match
the.quick.brown.fox_
No match
the.quick.brown.fox+
No match
/(?>.*)(?<=(abcd|wxyz))/
alphabetabcd
0: alphabetabcd
1: abcd
endingwxyz
0: endingwxyz
1: wxyz
*** Failers
No match
a rather long string that doesn't end with one of them
No match
/word (?>(?:(?!otherword)[a-zA-Z0-9]+ ){0,30})otherword/
word cat dog elephant mussel cow horse canary baboon snake shark otherword
0: word cat dog elephant mussel cow horse canary baboon snake shark otherword
word cat dog elephant mussel cow horse canary baboon snake shark
No match
/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
No match
/(?<=\d{3}(?!999))foo/
999foo
0: foo
123999foo
0: foo
*** Failers
No match
123abcfoo
No match
/(?<=(?!...999)\d{3})foo/
999foo
0: foo
123999foo
0: foo
*** Failers
No match
123abcfoo
No match
/(?<=\d{3}(?!999)...)foo/
123abcfoo
0: foo
123456foo
0: foo
*** Failers
No match
123999foo
No match
/(?<=\d{3}...)(?<!999)foo/
123abcfoo
0: foo
123456foo
0: foo
*** Failers
No match
123999foo
No match
/<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
0: <a href=abcd
1: <unset>
2: <unset>
3: abcd
<a href=\"abcd xyz pqr\" cats
0: <a href="abcd xyz pqr"
1: "
2: abcd xyz pqr
<a href=\'abcd xyz pqr\' cats
0: <a href='abcd xyz pqr'
1: '
2: abcd xyz pqr
/<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
0: <a href=abcd
1: <unset>
2: <unset>
3: abcd
<a href=\"abcd xyz pqr\" cats
0: <a href="abcd xyz pqr"
1: "
2: abcd xyz pqr
<a href = \'abcd xyz pqr\' cats
0: <a href = 'abcd xyz pqr'
1: '
2: abcd xyz pqr
/<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
0: <a href=abcd
1: <unset>
2: <unset>
3: abcd
<a href=\"abcd xyz pqr\" cats
0: <a href="abcd xyz pqr"
1: "
2: abcd xyz pqr
<a href = \'abcd xyz pqr\' cats
0: <a href = 'abcd xyz pqr'
1: '
2: abcd xyz pqr
/((Z)+|A)*/
ZABCDEFG
0: ZA
1: A
2: Z
/(Z()|A)*/
ZABCDEFG
0: ZA
1: A
2:
/(Z(())|A)*/
ZABCDEFG
0: ZA
1: A
2:
3:
/((?>Z)+|A)*/
ZABCDEFG
0: ZA
1: A
/((?>)+|A)*/
ZABCDEFG
0:
1:
/a*/g
abbab
0: a
0:
0:
0: a
0:
0:
/^[\d-a]/
abcde
0: a
-things
0: -
0digit
0: 0
*** Failers
No match
bcdef
No match
/[[:space:]]+/
> \x09\x0a\x0c\x0d\x0b<
0: \x09\x0a\x0c\x0d\x0b
/[[:blank:]]+/
> \x09\x0a\x0c\x0d\x0b<
0: \x09
/[\s]+/
> \x09\x0a\x0c\x0d\x0b<
0: \x09\x0a\x0c\x0d\x0b
/\s+/
> \x09\x0a\x0c\x0d\x0b<
0: \x09\x0a\x0c\x0d\x0b
/a b/x
ab
0: ab
/(?!\A)x/m
a\nxb\n
0: x
/(?!^)x/m
a\nxb\n
No match
/abc\Qabc\Eabc/
abcabcabc
0: abcabcabc
/abc\Q(*+|\Eabc/
abc(*+|abc
0: abc(*+|abc
/ abc\Q abc\Eabc/x
abc abcabc
0: abc abcabc
*** Failers
No match
abcabcabc
No match
/abc#comment
\Q#not comment
literal\E/x
abc#not comment\n literal
0: abc#not comment\x0a literal
/abc#comment
\Q#not comment
literal/x
abc#not comment\n literal
0: abc#not comment\x0a literal
/abc#comment
\Q#not comment
literal\E #more comment
/x
abc#not comment\n literal
0: abc#not comment\x0a literal
/abc#comment
\Q#not comment
literal\E #more comment/x
abc#not comment\n literal
0: abc#not comment\x0a literal
/\Qabc\$xyz\E/
abc\\\$xyz
0: abc\$xyz
/\Qabc\E\$\Qxyz\E/
abc\$xyz
0: abc$xyz
/\Gabc/
abc
0: abc
*** Failers
No match
xyzabc
No match
/\Gabc./g
abc1abc2xyzabc3
0: abc1
0: abc2
/abc./g
abc1abc2xyzabc3
0: abc1
0: abc2
0: abc3
/a(?x: b c )d/
XabcdY
0: abcd
*** Failers
No match
Xa b c d Y
No match
/((?x)x y z | a b c)/
XabcY
0: abc
1: abc
AxyzB
0: xyz
1: xyz
/(?i)AB(?-i)C/
XabCY
0: abC
*** Failers
No match
XabcY
No match
/((?i)AB(?-i)C|D)E/
abCE
0: abCE
1: abC
DE
0: DE
1: D
*** Failers
No match
abcE
No match
abCe
No match
dE
No match
De
No match
/(.*)\d+\1/
abc123abc
0: abc123abc
1: abc
abc123bc
0: bc123bc
1: bc
/(.*)\d+\1/s
abc123abc
0: abc123abc
1: abc
abc123bc
0: bc123bc
1: bc
/((.*))\d+\1/
abc123abc
0: abc123abc
1: abc
2: abc
abc123bc
0: bc123bc
1: bc
2: bc
# 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
/ix
a123::a123
0: a123::a123
1:
a123:b342::abcd
0: a123:b342::abcd
1:
a123:b342::324e:abcd
0: a123:b342::324e:abcd
1:
a123:ddde:b342::324e:abcd
0: a123:ddde:b342::324e:abcd
1:
a123:ddde:b342::324e:dcba:abcd
0: a123:ddde:b342::324e:dcba:abcd
1:
a123:ddde:9999:b342::324e:dcba:abcd
0: a123:ddde:9999:b342::324e:dcba:abcd
1:
*** Failers
No match
1:2:3:4:5:6:7:8
No match
a123:bce:ddde:9999:b342::324e:dcba:abcd
No match
a123::9999:b342::324e:dcba:abcd
No match
abcde:2:3:4:5:6:7:8
No match
::1
No match
abcd:fee0:123::
No match
:1
No match
1:
No match
/[z\Qa-d]\E]/
z
0: z
a
0: a
-
0: -
d
0: d
]
0: ]
*** Failers
0: a
b
No match
/(a+)*b/
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
/(?i)reg(?:ul(?:[a<>]|ae)r|ex)/
REGular
0: REGular
regulaer
0: regulaer
Regex
0: Regex
regul<75>r
0: regul\xe4r
/<2F><><EFBFBD><EFBFBD>[<5B>-<2D><>-<2D>]+/
<20><><EFBFBD><EFBFBD><EFBFBD>
0: \xc5\xe6\xe5\xe4\xe0
<20><><EFBFBD><EFBFBD><EFBFBD>
0: \xc5\xe6\xe5\xe4\xff
<20><><EFBFBD><EFBFBD><EFBFBD>
0: \xc5\xe6\xe5\xe4\xc0
<20><><EFBFBD><EFBFBD><EFBFBD>
0: \xc5\xe6\xe5\xe4\xdf
/(?<=Z)X./
\x84XAZXB
0: XB
/ab cd (?x) de fg/
ab cd defg
0: ab cd defg
/ab cd(?x) de fg/
ab cddefg
0: ab cddefg
** Failers
No match
abcddefg
No match
/(?<![^f]oo)(bar)/
foobarX
0: bar
1: bar
** Failers
No match
boobarX
No match
/(?<![^f])X/
offX
0: X
** Failers
No match
onyX
No match
/(?<=[^f])X/
onyX
0: X
** Failers
No match
offX
No match
/^/gm
a\nb\nc\n
0:
0:
0:
\
0:
/(?<=C\n)^/gm
A\nC\nC\n
0:
/(?:(?(1)a|b)(X))+/
bXaX
0: bXaX
1: X
/(?:(?(1)\1a|b)(X|Y))+/
bXXaYYaY
0: bXXaYYaY
1: Y
bXYaXXaX
0: bX
1: X
/()()()()()()()()()(?:(?(10)\10a|b)(X|Y))+/
bXXaYYaY
0: bX
1:
2:
3:
4:
5:
6:
7:
8:
9:
10: X
/[[,abc,]+]/
abc]
0: abc]
a,b]
0: a,b]
[a,b,c]
0: [a,b,c]
/(?-x: )/x
A\x20B
0:
"(?x)(?-x: \s*#\s*)"
A # B
0: #
** Failers
No match
#
No match
"(?x-is)(?:(?-ixs) \s*#\s*) include"
A #include
0: #include
** Failers
No match
A#include
No match
A #Include
No match
/a*b*\w/
aaabbbb
0: aaabbbb
aaaa
0: aaaa
a
0: a
/a*b?\w/
aaabbbb
0: aaabb
aaaa
0: aaaa
a
0: a
/a*b{0,4}\w/
aaabbbb
0: aaabbbb
aaaa
0: aaaa
a
0: a
/a*b{0,}\w/
aaabbbb
0: aaabbbb
aaaa
0: aaaa
a
0: a
/a*\d*\w/
0a
0: 0a
a
0: a
/a*b *\w/x
a
0: a
/a*b#comment
*\w/x
a
0: a
/a* b *\w/x
a
0: a
/^\w+=.*(\\\n.*)*/
abc=xyz\\\npqr
0: abc=xyz\
/(?=(\w+))\1:/
abcd:
0: abcd:
1: abcd
/^(?=(\w+))\1:/
abcd:
0: abcd:
1: abcd
/^\Eabc/
abc
0: abc
/^[\Eabc]/
a
0: a
** Failers
No match
E
No match
/^[a-\Ec]/
b
0: b
** Failers
No match
-
No match
E
No match
/^[a\E\E-\Ec]/
b
0: b
** Failers
No match
-
No match
E
No match
/^[\E\Qa\E-\Qz\E]+/
b
0: b
** Failers
No match
-
No match
/^[a\Q]bc\E]/
a
0: a
]
0: ]
c
0: c
/^[a-\Q\E]/
a
0: a
-
0: -
/^(a()*)*/
aaaa
0: aaaa
1: a
2:
/^(?:a(?:(?:))*)*/
aaaa
0: aaaa
/^(a()+)+/
aaaa
0: aaaa
1: a
2:
/^(?:a(?:(?:))+)+/
aaaa
0: aaaa
/(a){0,3}(?(1)b|(c|))*D/
abbD
0: abbD
1: a
ccccD
0: ccccD
1: <unset>
2:
D
0: D
1: <unset>
2:
/(a|)*\d/
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
1:
/(?>a|)*\d/
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
/(?:a|)*\d/
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
0: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4
/\Z/g
abc\n
0:
0:
/^(?s)(?>.*)(?<!\n)/
abc
0: abc
abc\n
No match
/^(?![^\n]*\n\z)/
abc
0:
abc\n
No match
/\z(?<!\n)/
abc
0:
abc\n
No match
/(.*(.)?)*/
abcd
0: abcd
1:
/( (A | (?(1)0|) )* )/x
abcd
0:
1:
2:
/( ( (?(1)0|) )* )/x
abcd
0:
1:
2:
/( (?(1)0|)* )/x
abcd
0:
1:
/[[:abcd:xyz]]/
a]
0: a]
:]
0: :]
/[abc[:x\]pqr]/
a
0: a
[
0: [
:
0: :
]
0: ]
p
0: p
/.*[op][xyz]/
fooabcfoo
No match
/(?(?=.*b)b|^)/
adc
0:
abc
0: b
/(?(?=^.*b)b|^)/
adc
0:
abc
No match
/(?(?=.*b)b|^)*/
adc
0:
abc
0:
/(?(?=.*b)b|^)+/
adc
0:
abc
0: b
/(?(?=b).*b|^d)/
abc
0: b
/(?(?=.*b).*b|^d)/
abc
0: ab
/^%((?(?=[a])[^%])|b)*%$/
%ab%
0: %ab%
1:
/(?i)a(?-i)b|c/
XabX
0: ab
XAbX
0: Ab
CcC
0: c
** Failers
No match
XABX
No match
/[\x00-\xff\s]+/
\x0a\x0b\x0c\x0d
0: \x0a\x0b\x0c\x0d
/(abc)\1/i
abc
No match
/(abc)\1/
abc
No match
/[^a]*/i
12abc
0: 12
12ABC
0: 12
/[^a]*+/i
12abc
0: 12
12ABC
0: 12
/[^a]*?X/i
** Failers
No match
12abc
No match
12ABC
No match
/[^a]+?X/i
** Failers
No match
12abc
No match
12ABC
No match
/[^a]?X/i
12aXbcX
0: X
12AXBCX
0: X
BCX
0: CX
/[^a]??X/i
12aXbcX
0: X
12AXBCX
0: X
BCX
0: CX
/[^a]?+X/i
12aXbcX
0: cX
12AXBCX
0: CX
BCX
0: CX
/[^a]{2,3}/i
abcdef
0: bcd
ABCDEF
0: BCD
/[^a]{2,3}?/i
abcdef
0: bc
ABCDEF
0: BC
/[^a]{2,3}+/i
abcdef
0: bcd
ABCDEF
0: BCD
/((a|)+)+Z/
Z
0: Z
1:
2:
/(a)b|(a)c/
ac
0: ac
1: <unset>
2: a
/(?>(a))b|(a)c/
ac
0: ac
1: <unset>
2: a
/(?=(a))ab|(a)c/
ac
0: ac
1: <unset>
2: a
/((?>(a))b|(a)c)/
ac
0: ac
1: ac
2: <unset>
3: a
/((?>(a))b|(a)c)++/
ac
0: ac
1: ac
2: <unset>
3: a
/(?:(?>(a))b|(a)c)++/
ac
0: ac
1: <unset>
2: a
/(?=(?>(a))b|(a)c)(..)/
ac
0: ac
1: <unset>
2: a
3: ac
/(?>(?>(a))b|(a)c)/
ac
0: ac
1: <unset>
2: a
/(?:(?>([ab])))+a=/aftertext
=ba=
0: ba=
0+
1: b
/(?>([ab]))+a=/aftertext
=ba=
0: ba=
0+
1: b
/((?>(a+)b)+(aabab))/
aaaabaaabaabab
0: aaaabaaabaabab
1: aaaabaaabaabab
2: aaa
3: aabab
/(?>a+|ab)+?c/
aabc
No match
/(?>a+|ab)+c/
aabc
No match
/(?:a+|ab)+c/
aabc
0: aabc
/(?(?=(a))a)/
a
0: a
1: a
/(?(?=(a))a)(b)/
ab
0: ab
1: a
2: b
/^(?:a|ab)++c/
aaaabc
No match
/^(?>a|ab)++c/
aaaabc
No match
/^(?:a|ab)+c/
aaaabc
0: aaaabc
/(?=abc){3}abc/aftertext
abcabcabc
0: abc
0+ abcabc
** Failers
No match
xyz
No match
/(?=abc)+abc/aftertext
abcabcabc
0: abc
0+ abcabc
** Failers
No match
xyz
No match
/(?=abc)++abc/aftertext
abcabcabc
0: abc
0+ abcabc
** Failers
No match
xyz
No match
/(?=abc){0}xyz/
xyz
0: xyz
/(?=abc){1}xyz/
** Failers
No match
xyz
No match
/(?=(a))?./
ab
0: a
1: a
bc
0: b
/(?=(a))??./
ab
0: a
bc
0: b
/^(?=(?1))?[az]([abc])d/
abd
0: abd
1: b
zcdxx
0: zcd
1: c
/^(?!a){0}\w+/
aaaaa
0: aaaaa
/(?<=(abc))?xyz/
abcxyz
0: xyz
1: abc
pqrxyz
0: xyz
/^[\g<a>]+/
ggg<<<aaa>>>
0: ggg<<<aaa>>>
** Failers
No match
\\ga
No match
/^[\ga]+/
gggagagaxyz
0: gggagaga
/^[:a[:digit:]]+/
aaaa444:::Z
0: aaaa444:::
/^[:a[:digit:]:b]+/
aaaa444:::bbbZ
0: aaaa444:::bbb
/[:a]xxx[b:]/
:xxx:
0: :xxx:
/(?<=a{2})b/i
xaabc
0: b
** Failers
No match
xabc
No match
/(?<!a{2})b/i
xabc
0: b
** Failers
No match
xaabc
No match
/(?<=a\h)c/
xa c
0: c
/(?<=[^a]{2})b/
axxbc
0: b
aAAbc
0: b
** Failers
No match
xaabc
No match
/(?<=[^a]{2})b/i
axxbc
0: b
** Failers
No match
aAAbc
No match
xaabc
No match
/(?<=a\H)c/
abc
0: c
/(?<=a\V)c/
abc
0: c
/(?<=a\v)c/
a\nc
0: c
/(?(?=c)c|d)++Y/
XcccddYX
0: cccddY
/(?(?=c)c|d)*+Y/
XcccddYX
0: cccddY
/^(a{2,3}){2,}+a/
aaaaaaa
0: aaaaaaa
1: aaa
** Failers
No match
aaaaaa
No match
aaaaaaaaa
No match
/^(a{2,3})++a/
** Failers
No match
aaaaaa
No match
/^(a{2,3})*+a/
** Failers
No match
aaaaaa
No match
/ab\Cde/
abXde
0: abXde
/(?<=ab\Cde)X/
abZdeX
0: X
/\H\h\V\v/
X X\x0a
0: X X\x0a
X\x09X\x0b
0: 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
0: \x09 \xa0X\x0a\x0b\x0c\x0d
\x09\x20\xa0\x0a\x0b\x0c\x0d\x0a
0: \x09 \xa0\x0a\x0b\x0c\x0d
\x09\x20\xa0\x0a\x0b\x0c
0: \x09 \xa0\x0a\x0b\x0c
** Failers
No match
\x09\x20\xa0\x0a\x0b
No match
/\H{3,4}/
XY ABCDE
0: ABCD
XY PQR ST
0: PQR
/.\h{3,4}./
XY AB PQRS
0: B P
/\h*X\h?\H+Y\H?Z/
>XNNNYZ
0: XNNNYZ
> X NYQZ
0: 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
0: XY\x0aZ\x0aA\x0bNN\x0c
>\x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c
0: \x0a\x0dX\x0aY\x0a\x0bZZZ\x0aAAA\x0bNNN\x0c
/(foo)\Kbar/
foobar
0: bar
1: foo
/(foo)(\Kbar|baz)/
foobar
0: bar
1: foo
2: bar
foobaz
0: foobaz
1: foo
2: baz
/(foo\Kbar)baz/
foobarbaz
0: barbaz
1: foobar
/abc\K|def\K/g,aftertext
Xabcdefghi
0:
0+ defghi
0:
0+ ghi
/ab\Kc|de\Kf/g,aftertext
Xabcdefghi
0: c
0+ defghi
0: f
0+ ghi
/(?=C)/g,aftertext
ABCDECBA
0:
0+ CDECBA
0:
0+ CBA
/^abc\K/aftertext
abcdef
0:
0+ def
** Failers
No match
defabcxyz
No match
/^(a(b))\1\g1\g{1}\g-1\g{-1}\g{-02}Z/
ababababbbabZXXXX
0: ababababbbabZ
1: ab
2: b
/(?<A>tom|bon)-\g{A}/
tom-tom
0: tom-tom
1: tom
bon-bon
0: bon-bon
1: bon
/(^(a|b\g{-1}))/
bacxxx
No match
/(?|(abc)|(xyz))\1/
abcabc
0: abcabc
1: abc
xyzxyz
0: xyzxyz
1: xyz
** Failers
No match
abcxyz
No match
xyzabc
No match
/(?|(abc)|(xyz))(?1)/
abcabc
0: abcabc
1: abc
xyzabc
0: xyzabc
1: xyz
** Failers
No match
xyzxyz
No match
/^X(?5)(a)(?|(b)|(q))(c)(d)(Y)/
XYabcdY
0: XYabcdY
1: a
2: b
3: c
4: d
5: Y
/^X(?7)(a)(?|(b|(r)(s))|(q))(c)(d)(Y)/
XYabcdY
0: XYabcdY
1: a
2: b
3: <unset>
4: <unset>
5: c
6: d
7: Y
/^X(?7)(a)(?|(b|(?|(r)|(t))(s))|(q))(c)(d)(Y)/
XYabcdY
0: XYabcdY
1: a
2: b
3: <unset>
4: <unset>
5: c
6: d
7: Y
/(?'abc'\w+):\k<abc>{2}/
a:aaxyz
0: a:aa
1: a
ab:ababxyz
0: ab:abab
1: ab
** Failers
No match
a:axyz
No match
ab:abxyz
No match
/(?'abc'\w+):\g{abc}{2}/
a:aaxyz
0: a:aa
1: a
ab:ababxyz
0: ab:abab
1: ab
** Failers
No match
a:axyz
No match
ab:abxyz
No match
/^(?<ab>a)? (?(<ab>)b|c) (?('ab')d|e)/x
abd
0: abd
1: a
ce
0: ce
/^(a.)\g-1Z/
aXaXZ
0: aXaXZ
1: aX
/^(a.)\g{-1}Z/
aXaXZ
0: aXaXZ
1: aX
/^(?(DEFINE) (?<A> a) (?<B> b) ) (?&A) (?&B) /x
abcd
0: ab
/(?<NAME>(?&NAME_PAT))\s+(?<ADDR>(?&ADDRESS_PAT))
(?(DEFINE)
(?<NAME_PAT>[a-z]+)
(?<ADDRESS_PAT>\d+)
)/x
metcalfe 33
0: metcalfe 33
1: metcalfe
2: 33
/(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))\b(?&byte)(\.(?&byte)){3}/
1.2.3.4
0: 1.2.3.4
1: <unset>
2: .4
131.111.10.206
0: 131.111.10.206
1: <unset>
2: .206
10.0.0.0
0: 10.0.0.0
1: <unset>
2: .0
** Failers
No match
10.6
No match
455.3.4.5
No match
/\b(?&byte)(\.(?&byte)){3}(?(DEFINE)(?<byte>2[0-4]\d|25[0-5]|1\d\d|[1-9]?\d))/
1.2.3.4
0: 1.2.3.4
1: .4
131.111.10.206
0: 131.111.10.206
1: .206
10.0.0.0
0: 10.0.0.0
1: .0
** Failers
No match
10.6
No match
455.3.4.5
No match
/^(\w++|\s++)*$/
now is the time for all good men to come to the aid of the party
0: now is the time for all good men to come to the aid of the party
1: party
*** Failers
No match
this is not a line with only words and spaces!
No match
/(\d++)(\w)/
12345a
0: 12345a
1: 12345
2: a
*** Failers
No match
12345+
No match
/a++b/
aaab
0: aaab
/(a++b)/
aaab
0: aaab
1: aaab
/(a++)b/
aaab
0: aaab
1: aaa
/([^()]++|\([^()]*\))+/
((abc(ade)ufh()()x
0: abc(ade)ufh()()x
1: x
/\(([^()]++|\([^()]+\))+\)/
(abc)
0: (abc)
1: abc
(abc(def)xyz)
0: (abc(def)xyz)
1: xyz
*** Failers
No match
((()aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
/^([^()]|\((?1)*\))*$/
abc
0: abc
1: c
a(b)c
0: a(b)c
1: c
a(b(c))d
0: a(b(c))d
1: d
*** Failers)
No match
a(b(c)d
No match
/^>abc>([^()]|\((?1)*\))*<xyz<$/
>abc>123<xyz<
0: >abc>123<xyz<
1: 3
>abc>1(2)3<xyz<
0: >abc>1(2)3<xyz<
1: 3
>abc>(1(2)3)<xyz<
0: >abc>(1(2)3)<xyz<
1: (1(2)3)
/^(?:((.)(?1)\2|)|((.)(?3)\4|.))$/i
1221
0: 1221
1: 1221
2: 1
Satanoscillatemymetallicsonatas
0: Satanoscillatemymetallicsonatas
1: <unset>
2: <unset>
3: Satanoscillatemymetallicsonatas
4: S
AmanaplanacanalPanama
0: AmanaplanacanalPanama
1: <unset>
2: <unset>
3: AmanaplanacanalPanama
4: A
AblewasIereIsawElba
0: AblewasIereIsawElba
1: <unset>
2: <unset>
3: AblewasIereIsawElba
4: A
*** Failers
No match
Thequickbrownfox
No match
/^(\d+|\((?1)([+*-])(?1)\)|-(?1))$/
12
0: 12
1: 12
(((2+2)*-3)-7)
0: (((2+2)*-3)-7)
1: (((2+2)*-3)-7)
2: -
-12
0: -12
1: -12
*** Failers
No match
((2+2)*-3)-7)
No match
/^(x(y|(?1){2})z)/
xyz
0: xyz
1: xyz
2: y
xxyzxyzz
0: xxyzxyzz
1: xxyzxyzz
2: xyzxyz
*** Failers
No match
xxyzz
No match
xxyzxyzxyzz
No match
/((< (?: (?(R) \d++ | [^<>]*+) | (?2)) * >))/x
<>
0: <>
1: <>
2: <>
<abcd>
0: <abcd>
1: <abcd>
2: <abcd>
<abc <123> hij>
0: <abc <123> hij>
1: <abc <123> hij>
2: <abc <123> hij>
<abc <def> hij>
0: <def>
1: <def>
2: <def>
<abc<>def>
0: <abc<>def>
1: <abc<>def>
2: <abc<>def>
<abc<>
0: <>
1: <>
2: <>
*** Failers
No match
<abc
No match
/^a+(*FAIL)/
aaaaaa
No match
/a+b?c+(*FAIL)/
aaabccc
No match
/a+b?(*PRUNE)c+(*FAIL)/
aaabccc
No match
/a+b?(*COMMIT)c+(*FAIL)/
aaabccc
No match
/a+b?(*SKIP)c+(*FAIL)/
aaabcccaaabccc
No match
/^(?:aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/
aaaxxxxxx
0: aaaxxxxxx
aaa++++++
0: aaa
bbbxxxxx
0: bbbxxxxx
bbb+++++
0: bbb
cccxxxx
0: cccxxxx
ccc++++
0: ccc
dddddddd
0: ddd
/^(aaa(*THEN)\w{6}|bbb(*THEN)\w{5}|ccc(*THEN)\w{4}|\w{3})/
aaaxxxxxx
0: aaaxxxxxx
1: aaaxxxxxx
aaa++++++
0: aaa
1: aaa
bbbxxxxx
0: bbbxxxxx
1: bbbxxxxx
bbb+++++
0: bbb
1: bbb
cccxxxx
0: cccxxxx
1: cccxxxx
ccc++++
0: ccc
1: ccc
dddddddd
0: ddd
1: ddd
/a+b?(*THEN)c+(*FAIL)/
aaabccc
No match
/(A (A|B(*ACCEPT)|C) D)(E)/x
AB
0: AB
1: AB
2: B
ABX
0: AB
1: AB
2: B
AADE
0: AADE
1: AAD
2: A
3: E
ACDE
0: ACDE
1: ACD
2: C
3: E
** Failers
No match
AD
No match
/^\W*+(?:((.)\W*+(?1)\W*+\2|)|((.)\W*+(?3)\W*+\4|\W*+.\W*+))\W*+$/i
1221
0: 1221
1: 1221
2: 1
Satan, oscillate my metallic sonatas!
0: Satan, oscillate my metallic sonatas!
1: <unset>
2: <unset>
3: Satan, oscillate my metallic sonatas
4: S
A man, a plan, a canal: Panama!
0: A man, a plan, a canal: Panama!
1: <unset>
2: <unset>
3: A man, a plan, a canal: Panama
4: A
Able was I ere I saw Elba.
0: Able was I ere I saw Elba.
1: <unset>
2: <unset>
3: Able was I ere I saw Elba
4: A
*** Failers
No match
The quick brown fox
No match
/^((.)(?1)\2|.)$/
a
0: a
1: a
aba
0: aba
1: aba
2: a
aabaa
0: aabaa
1: aabaa
2: a
abcdcba
0: abcdcba
1: abcdcba
2: a
pqaabaaqp
0: pqaabaaqp
1: pqaabaaqp
2: p
ablewasiereisawelba
0: ablewasiereisawelba
1: ablewasiereisawelba
2: a
rhubarb
No match
the quick brown fox
No match
/(a)(?<=b(?1))/
baz
0: a
1: a
** Failers
No match
caz
No match
/(?<=b(?1))(a)/
zbaaz
0: a
1: a
** Failers
No match
aaa
No match
/(?<X>a)(?<=b(?&X))/
baz
0: a
1: a
/^(?|(abc)|(def))\1/
abcabc
0: abcabc
1: abc
defdef
0: defdef
1: def
** Failers
No match
abcdef
No match
defabc
No match
/^(?|(abc)|(def))(?1)/
abcabc
0: abcabc
1: abc
defabc
0: defabc
1: def
** Failers
No match
defdef
No match
abcdef
No match
/(?:a(?<quote> (?<apostrophe>')|(?<realquote>")) |b(?<quote> (?<apostrophe>')|(?<realquote>")) ) (?('quote')[a-z]+|[0-9]+)/x,dupnames
a\"aaaaa
0: a"aaaaa
1: "
2: <unset>
3: "
b\"aaaaa
0: b"aaaaa
1: <unset>
2: <unset>
3: <unset>
4: "
5: <unset>
6: "
** Failers
No match
b\"11111
No match
/(?:(?1)|B)(A(*F)|C)/
ABCD
0: BC
1: C
CCD
0: CC
1: C
** Failers
No match
CAD
No match
/^(?:(?1)|B)(A(*F)|C)/
CCD
0: CC
1: C
BCD
0: BC
1: C
** Failers
No match
ABCD
No match
CAD
No match
BAD
No match
/(?:(?1)|B)(A(*ACCEPT)XX|C)D/
AAD
0: AA
1: A
ACD
0: ACD
1: C
BAD
0: BA
1: A
BCD
0: BCD
1: C
BAX
0: BA
1: A
** Failers
No match
ACX
No match
ABC
No match
/(?(DEFINE)(A))B(?1)C/
BAC
0: BAC
/(?(DEFINE)((A)\2))B(?1)C/
BAAC
0: BAAC
/(?<pn> \( ( [^()]++ | (?&pn) )* \) )/x
(ab(cd)ef)
0: (ab(cd)ef)
1: (ab(cd)ef)
2: ef
/^(?=a(*SKIP)b|ac)/
** Failers
No match
ac
No match
/^(?=a(*PRUNE)b)/
ab
0:
** Failers
No match
ac
No match
/^(?=a(*ACCEPT)b)/
ac
0:
/(?>a\Kb)/
ab
0: b
/((?>a\Kb))/
ab
0: b
1: ab
/(a\Kb)/
ab
0: b
1: ab
/^a\Kcz|ac/
ac
0: ac
/(?>a\Kbz|ab)/
ab
0: ab
/^(?&t)(?(DEFINE)(?<t>a\Kb))$/
ab
0: b
/^([^()]|\((?1)*\))*$/
a(b)c
0: a(b)c
1: c
a(b(c)d)e
0: a(b(c)d)e
1: e
/(?P<L1>(?P<L2>0)(?P>L1)|(?P>L2))/
0
0: 0
1: 0
00
0: 00
1: 00
2: 0
0000
0: 0000
1: 0000
2: 0
/(?P<L1>(?P<L2>0)|(?P>L2)(?P>L1))/
0
0: 0
1: 0
2: 0
00
0: 0
1: 0
2: 0
0000
0: 0
1: 0
2: 0
# 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
No match
# Check the use of names for failure
/^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark
** Failers
No match
AC
No match, mark = A
CB
No match, mark = B
/(*MARK:A)(*SKIP:B)(C|X)/mark
C
0: C
1: C
MK: A
D
No match, mark = A
/^(A(*THEN:A)B|C(*THEN:B)D)/mark
** Failers
No match
CB
No match, mark = B
/^(?:A(*THEN:A)B|C(*THEN:B)D)/mark
CB
No match, mark = B
/^(?>A(*THEN:A)B|C(*THEN:B)D)/mark
CB
No match, mark = B
# 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/x,mark
AAAC
0: AC
# Test skipping over a non-matching mark.
/A(*MARK:A)A+(*MARK:B)(*SKIP:A)(B|Z) | AC/x,mark
AAAC
0: AC
# Check shorthand for MARK.
/A(*:A)A+(*SKIP:A)(B|Z) | AC/x,mark
AAAC
0: AC
/(*:A)A+(*SKIP:A)(B|Z)/mark
AAAC
No match, mark = A
# This should succeed, as a non-existent skip name disables the skip.
/A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark
AAAC
0: AC
/A(*MARK:A)A+(*SKIP:B)(B|Z) | AC(*:B)/x,mark
AAAC
0: AC
MK: B
# 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
0: ABC
1: A
2: B
3: C
** Failers
No match
DEFGABC
No match
# COMMIT inside an atomic group can't stop backtracking over the group.
/(\w+)(?>b(*COMMIT))\w{2}/
abbb
0: abbb
1: a
/(\w+)b(*COMMIT)\w{2}/
abbb
No match
# Check opening parens in comment when seeking forward reference.
/(?&t)(?#()(?(DEFINE)(?<t>a))/
bac
0: a
# COMMIT should override THEN.
/(?>(*COMMIT)(?>yes|no)(*THEN)(*F))?/
yes
No match
/(?>(*COMMIT)(yes|no)(*THEN)(*F))?/
yes
No match
/b?(*SKIP)c/
bc
0: bc
abc
0: bc
/(*SKIP)bc/
a
No match
/(*SKIP)b/
a
No match
/(?P<abn>(?P=abn)xxx|)+/
xxx
0:
1:
/(?i:([^b]))(?1)/
aa
0: aa
1: a
aA
0: aA
1: a
** Failers
0: **
1: *
ab
No match
aB
No match
Ba
No match
ba
No match
/^(?&t)*+(?(DEFINE)(?<t>a))\w$/
aaaaaaX
0: aaaaaaX
** Failers
No match
aaaaaa
No match
/^(?&t)*(?(DEFINE)(?<t>a))\w$/
aaaaaaX
0: aaaaaaX
aaaaaa
0: aaaaaa
/^(a)*+(\w)/
aaaaX
0: aaaaX
1: a
2: X
YZ
0: Y
1: <unset>
2: Y
** Failers
No match
aaaa
No match
/^(?:a)*+(\w)/
aaaaX
0: aaaaX
1: X
YZ
0: Y
1: Y
** Failers
No match
aaaa
No match
/^(a)++(\w)/
aaaaX
0: aaaaX
1: a
2: X
** Failers
No match
aaaa
No match
YZ
No match
/^(?:a)++(\w)/
aaaaX
0: aaaaX
1: X
** Failers
No match
aaaa
No match
YZ
No match
/^(a)?+(\w)/
aaaaX
0: aa
1: a
2: a
YZ
0: Y
1: <unset>
2: Y
/^(?:a)?+(\w)/
aaaaX
0: aa
1: a
YZ
0: Y
1: Y
/^(a){2,}+(\w)/
aaaaX
0: aaaaX
1: a
2: X
** Failers
No match
aaa
No match
YZ
No match
/^(?:a){2,}+(\w)/
aaaaX
0: aaaaX
1: X
** Failers
No match
aaa
No match
YZ
No match
/(a|)*(?1)b/
b
0: b
1:
ab
0: ab
1:
aab
0: aab
1:
/(a)++(?1)b/
** Failers
No match
ab
No match
aab
No match
/(a)*+(?1)b/
** Failers
No match
ab
No match
aab
No match
/(?1)(?:(b)){0}/
b
0: b
/(foo ( \( ((?:(?> [^()]+ )|(?2))*) \) ) )/x
foo(bar(baz)+baz(bop))
0: foo(bar(baz)+baz(bop))
1: foo(bar(baz)+baz(bop))
2: (bar(baz)+baz(bop))
3: bar(baz)+baz(bop)
/(A (A|B(*ACCEPT)|C) D)(E)/x
AB
0: AB
1: AB
2: B
/\A.*?(a|bc)/
ba
0: ba
1: a
/\A.*?(?:a|bc)++/
ba
0: ba
/\A.*?(a|bc)++/
ba
0: ba
1: a
/\A.*?(?:a|bc|d)/
ba
0: ba
/(?:(b))++/
beetle
0: b
1: b
/(?(?=(a(*ACCEPT)z))a)/
a
0: a
1: a
/^(a)(?1)+ab/
aaaab
0: aaaab
1: a
/^(a)(?1)++ab/
aaaab
No match
/^(?=a(*:M))aZ/mark
aZbc
0: aZ
MK: M
/^(?!(*:M)b)aZ/mark
aZbc
0: aZ
/(?(DEFINE)(a))?b(?1)/
backgammon
0: ba
/^\N+/
abc\ndef
0: abc
/^\N{1,}/
abc\ndef
0: abc
/(?(R)a+|(?R)b)/
aaaabcde
0: aaaab
/(?(R)a+|((?R))b)/
aaaabcde
0: aaaab
1: aaaa
/((?(R)a+|(?1)b))/
aaaabcde
0: aaaab
1: aaaab
/((?(R1)a+|(?1)b))/
aaaabcde
0: aaaab
1: aaaab
Fix stack overflow bug, copying fix from PCRE1.
2014-08-08 17:36:18 +02:00
/((?(R)a|(?1)))*/
aaa
0: aaa
1: a
/((?(R)a|(?1)))+/
aaa
0: aaa
1: a
Tests 1 and 2 are converted (but without save/restore).
2014-07-24 18:32:38 +02:00
/a(*:any
name)/mark
abc
0: a
MK: any \x0aname
/(?>(?&t)c|(?&t))(?(DEFINE)(?<t>a|b(*PRUNE)c))/
a
0: a
ba
0: a
bba
0: a
# Checking revised (*THEN) handling.
# Capture
/^.*? (a(*THEN)b) c/x
aabc
No match
/^.*? (a(*THEN)b|(*F)) c/x
aabc
0: aabc
1: ab
/^.*? ( (a(*THEN)b) | (*F) ) c/x
aabc
0: aabc
1: ab
2: ab
/^.*? ( (a(*THEN)b) ) c/x
aabc
No match
# Non-capture
/^.*? (?:a(*THEN)b) c/x
aabc
No match
/^.*? (?:a(*THEN)b|(*F)) c/x
aabc
0: aabc
/^.*? (?: (?:a(*THEN)b) | (*F) ) c/x
aabc
0: aabc
/^.*? (?: (?:a(*THEN)b) ) c/x
aabc
No match
# Atomic
/^.*? (?>a(*THEN)b) c/x
aabc
No match
/^.*? (?>a(*THEN)b|(*F)) c/x
aabc
0: aabc
/^.*? (?> (?>a(*THEN)b) | (*F) ) c/x
aabc
0: aabc
/^.*? (?> (?>a(*THEN)b) ) c/x
aabc
No match
# Possessive capture
/^.*? (a(*THEN)b)++ c/x
aabc
No match
/^.*? (a(*THEN)b|(*F))++ c/x
aabc
0: aabc
1: ab
/^.*? ( (a(*THEN)b)++ | (*F) )++ c/x
aabc
0: aabc
1: ab
2: ab
/^.*? ( (a(*THEN)b)++ )++ c/x
aabc
No match
# Possessive non-capture
/^.*? (?:a(*THEN)b)++ c/x
aabc
No match
/^.*? (?:a(*THEN)b|(*F))++ c/x
aabc
0: aabc
/^.*? (?: (?:a(*THEN)b)++ | (*F) )++ c/x
aabc
0: aabc
/^.*? (?: (?:a(*THEN)b)++ )++ c/x
aabc
No match
# Condition assertion
/^(?(?=a(*THEN)b)ab|ac)/
ac
0: ac
# Condition
/^.*?(?(?=a)a|b(*THEN)c)/
ba
No match
/^.*?(?:(?(?=a)a|b(*THEN)c)|d)/
ba
0: ba
/^.*?(?(?=a)a(*THEN)b|c)/
ac
No match
# Assertion
/^.*(?=a(*THEN)b)/
aabc
0: a
# --------------------------
/(?>a(*:m))/imsx,mark
a
0: a
MK: m
/(?>(a)(*:m))/imsx,mark
a
0: a
1: a
MK: m
/(?<=a(*ACCEPT)b)c/
xacd
0: c
/(?<=(a(*ACCEPT)b))c/
xacd
0: c
1: a
/(?<=(a(*COMMIT)b))c/
xabcd
0: c
1: ab
** Failers
No match
xacd
No match
/(?<!a(*FAIL)b)c/
xcd
0: c
acd
0: c
/(?<=a(*:N)b)c/mark
xabcd
0: c
MK: N
/(?<=a(*PRUNE)b)c/
xabcd
0: c
/(?<=a(*SKIP)b)c/
xabcd
0: c
/(?<=a(*THEN)b)c/
xabcd
0: c
/(a)(?2){2}(.)/
abcd
0: abcd
1: a
2: d
/(*MARK:A)(*PRUNE:B)(C|X)/mark
C
0: C
1: C
MK: B
D
No match, mark = B
/(*MARK:A)(*PRUNE:B)(C|X)/mark
C
0: C
1: C
MK: B
D
No match, mark = B
/(*MARK:A)(*THEN:B)(C|X)/mark
C
0: C
1: C
MK: B
D
No match, mark = B
/(*MARK:A)(*THEN:B)(C|X)/mark,no_start_optimize
C
0: C
1: C
MK: B
D
No match, mark = B
/(*MARK:A)(*THEN:B)(C|X)/mark
C
0: C
1: C
MK: B
D
No match, mark = B
# This should fail, as the skip causes a bump to offset 3 (the skip).
/A(*MARK:A)A+(*SKIP)(B|Z) | AC/x,mark
AAAC
No match, mark = A
# Same
/A(*MARK:A)A+(*MARK:B)(*SKIP:B)(B|Z) | AC/x,mark
AAAC
No match, mark = B
/A(*:A)A+(*SKIP)(B|Z) | AC/x,mark
AAAC
No match, mark = A
# This should fail, as a null name is the same as no name.
/A(*MARK:A)A+(*SKIP:)(B|Z) | AC/x,mark
AAAC
No match, mark = A
# A check on what happens after hitting a mark and them bumping along to
# something that does not even start. Perl reports tags after the failures
# here, though it does not when the individual letters are made into something
# more complicated.
/A(*:A)B|XX(*:B)Y/mark
AABC
0: AB
MK: A
XXYZ
0: XXY
MK: B
** Failers
No match
XAQQ
No match, mark = A
XAQQXZZ
No match, mark = A
AXQQQ
No match, mark = A
AXXQQQ
No match, mark = B
/^(A(*THEN:A)B|C(*THEN:B)D)/mark
AB
0: AB
1: AB
MK: A
CD
0: CD
1: CD
MK: B
** Failers
No match
AC
No match, mark = A
CB
No match, mark = B
/^(A(*PRUNE:A)B|C(*PRUNE:B)D)/mark
AB
0: AB
1: AB
MK: A
CD
0: CD
1: CD
MK: B
** Failers
No match
AC
No match, mark = A
CB
No match, mark = B
# An empty name does not pass back an empty string. It is the same as if no
# name were given.
/^(A(*PRUNE:)B|C(*PRUNE:B)D)/mark
AB
0: AB
1: AB
CD
0: CD
1: CD
MK: B
# PRUNE goes to next bumpalong; COMMIT does not.
/A(*PRUNE:A)B/mark
ACAB
0: AB
MK: A
# Mark names can be duplicated.
/A(*:A)B|X(*:A)Y/mark
AABC
0: AB
MK: A
XXYZ
0: XY
MK: A
/b(*:m)f|a(*:n)w/mark
aw
0: aw
MK: n
** Failers
No match, mark = n
abc
No match, mark = m
/b(*:m)f|aw/mark
abaw
0: aw
** Failers
No match
abc
No match, mark = m
abax
No match, mark = m
/A(*MARK:A)A+(*SKIP:B)(B|Z) | AAC/x,mark
AAAC
0: AAC
/a(*PRUNE:X)bc|qq/mark,no_start_optimize
** Failers
No match, mark = X
axy
No match, mark = X
/a(*THEN:X)bc|qq/mark,no_start_optimize
** Failers
No match, mark = X
axy
No match, mark = X
/(?=a(*MARK:A)b)..x/mark
abxy
0: abx
MK: A
** Failers
No match
abpq
No match
/(?=a(*MARK:A)b)..(*:Y)x/mark
abxy
0: abx
MK: Y
** Failers
No match
abpq
No match
/(?=a(*PRUNE:A)b)..x/mark
abxy
0: abx
MK: A
** Failers
No match
abpq
No match
/(?=a(*PRUNE:A)b)..(*:Y)x/mark
abxy
0: abx
MK: Y
** Failers
No match
abpq
No match
/(?=a(*THEN:A)b)..x/mark
abxy
0: abx
MK: A
** Failers
No match
abpq
No match
/(?=a(*THEN:A)b)..(*:Y)x/mark
abxy
0: abx
MK: Y
** Failers
No match
abpq
No match
/(another)?(\1?)test/
hello world test
0: test
1: <unset>
2:
/(another)?(\1+)test/
hello world test
No match
/(a(*COMMIT)b){0}a(?1)|aac/
aac
0: aac
/((?:a?)*)*c/
aac
0: aac
1:
/((?>a?)*)*c/
aac
0: aac
1:
/(?>.*?a)(?<=ba)/
aba
0: ba
/(?:.*?a)(?<=ba)/
aba
0: aba
/.*?a(*PRUNE)b/
aab
0: ab
/.*?a(*PRUNE)b/s
aab
0: ab
/^a(*PRUNE)b/s
aab
No match
/.*?a(*SKIP)b/
aab
0: ab
/(?>.*?a)b/s
aab
0: ab
/(?>.*?a)b/
aab
0: ab
/(?>^a)b/s
aab
No match
/(?>.*?)(?<=(abcd)|(wxyz))/
alphabetabcd
0:
1: abcd
endingwxyz
0:
1: <unset>
2: wxyz
/(?>.*)(?<=(abcd)|(wxyz))/
alphabetabcd
0: alphabetabcd
1: abcd
endingwxyz
0: endingwxyz
1: <unset>
2: wxyz
"(?>.*)foo"
abcdfooxyz
No match
"(?>.*?)foo"
abcdfooxyz
0: foo
/(?:(a(*PRUNE)b)){0}(?:(?1)|ac)/
ac
0: ac
/(?:(a(*SKIP)b)){0}(?:(?1)|ac)/
ac
0: ac
/(?<=(*SKIP)ac)a/
aa
No match
/A(*MARK:A)A+(*SKIP:B)(B|Z) | AC/x,mark
AAAC
0: AC
/a(*SKIP:m)x|ac(*:n)(*SKIP:n)d|ac/mark
acacd
0: acd
MK: n
/A(*SKIP:m)x|A(*SKIP:n)x|AB/mark
AB
0: AB
/((*SKIP:r)d){0}a(*SKIP:m)x|ac(*:n)|ac/mark
acacd
0: ac
MK: n
# 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
0: aaaac
# 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
0: aaaac
/aaaaa(*SKIP:N)(*PRUNE)b|a+c/
aaaaaac
0: aaaac
/aaaa(*:N)a(*SKIP:N)(*PRUNE)b|a+c/
aaaaaac
0: aaaac
# Putting THEN in front makes no difference.
/aaaaa(*THEN)(*PRUNE)b|a+c/
aaaaaac
0: aaaac
# 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
0: ac
# Putting PRUNE in front makes no difference.
/aaaaa(*PRUNE)(*SKIP)b|a+c/
aaaaaac
0: ac
# Putting THEN in front makes no difference.
/aaaaa(*THEN)(*SKIP)b|a+c/
aaaaaac
0: ac
# In this case, neither does COMMIT. This still matches "ac".
/aaaaa(*COMMIT)(*SKIP)b|a+c/
aaaaaac
0: ac
# This gives "no match", as expected.
/aaaaa(*COMMIT)b|a+c/
aaaaaac
No match
# ---- Tests using THEN ----
# This matches "aaaaaac", as expected.
/aaaaa(*THEN)b|a+c/
aaaaaac
0: aaaaaac
# Putting SKIP in front makes no difference.
/aaaaa(*SKIP)(*THEN)b|a+c/
aaaaaac
0: aaaaaac
# Putting PRUNE in front makes no difference.
/aaaaa(*PRUNE)(*THEN)b|a+c/
aaaaaac
0: aaaaaac
# Putting COMMIT in front makes no difference.
/aaaaa(*COMMIT)(*THEN)b|a+c/
aaaaaac
0: aaaaaac
# End of "priority" tests
/aaaaa(*:m)(*PRUNE:m)(*SKIP:m)m|a+/
aaaaaa
0: a
/aaaaa(*:m)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/
aaaaaa
0: a
/aaaaa(*:n)(*PRUNE:m)(*SKIP:m)m|a+/
aaaaaa
0: aaaa
/aaaaa(*:n)(*MARK:m)(*PRUNE)(*SKIP:m)m|a+/
aaaaaa
0: a
/a(*MARK:A)aa(*PRUNE:A)a(*SKIP:A)b|a+c/
aaaac
0: aac
/a(*MARK:A)aa(*MARK:A)a(*SKIP:A)b|a+c/
aaaac
0: ac
/aaa(*PRUNE:A)a(*SKIP:A)b|a+c/
aaaac
0: aac
/aaa(*MARK:A)a(*SKIP:A)b|a+c/
aaaac
0: ac
/a(*:m)a(*COMMIT)(*SKIP:m)b|a+c/mark
aaaaaac
0: ac
/.?(a|b(*THEN)c)/
ba
0: ba
1: a
/(a(*COMMIT)b)c|abd/
abc
0: abc
1: ab
abd
No match
/(?=a(*COMMIT)b)abc|abd/
abc
0: abc
abd
0: abd
/(?>a(*COMMIT)b)c|abd/
abc
0: abc
abd
0: abd
/a(?=b(*COMMIT)c)[^d]|abd/
abd
No match
abc
0: ab
/a(?=bc).|abd/
abd
0: abd
abc
0: ab
/a(?>b(*COMMIT)c)d|abd/
abceabd
No match
/a(?>bc)d|abd/
abceabd
0: abd
/(?>a(*COMMIT)b)c|abd/
abd
0: abd
/(?>a(*COMMIT)c)d|abd/
abd
No match
/((?=a(*COMMIT)b)ab|ac){0}(?:(?1)|a(c))/
ac
0: ac
1: <unset>
2: c
# These tests were formerly in test 2, but changes in PCRE and Perl have
# made them compatible.
/^(a)?(?(1)a|b)+$/
*** Failers
No match
a
No match
/(?=a\Kb)ab/
ab
0: b
/(?!a\Kb)ac/
ac
0: ac
/^abc(?<=b\Kc)d/
abcd
0: cd
/^abc(?<!b\Kq)d/
abcd
0: abcd
/A(*PRUNE:A)A+(*SKIP:A)(B|Z) | AC/x,mark
AAAC
No match, mark = A
/^((abc|abcx)(*THEN)y|abcd)/
abcd
0: abcd
1: abcd
*** Failers
No match
abcxy
No match
/^((yes|no)(*THEN)(*F))?/
yes
No match
/(A (.*) C? (*THEN) | A D) (*FAIL)/x
AbcdCBefgBhiBqz
No match
/(A (.*) C? (*THEN) | A D) z/x
AbcdCBefgBhiBqz
No match
/(A (.*) C? (*THEN) | A D) \s* (*FAIL)/x
AbcdCBefgBhiBqz
No match
/(A (.*) C? (*THEN) | A D) \s* z/x
AbcdCBefgBhiBqz
No match
/(A (.*) (?:C|) (*THEN) | A D) (*FAIL)/x
AbcdCBefgBhiBqz
No match
/(A (.*) (?:C|) (*THEN) | A D) z/x
AbcdCBefgBhiBqz
No match
/(A (.*) C{0,6} (*THEN) | A D) (*FAIL)/x
AbcdCBefgBhiBqz
No match
/(A (.*) C{0,6} (*THEN) | A D) z/x
AbcdCBefgBhiBqz
No match
/(A (.*) (CE){0,6} (*THEN) | A D) (*FAIL)/x
AbcdCEBefgBhiBqz
No match
/(A (.*) (CE){0,6} (*THEN) | A D) z/x
AbcdCEBefgBhiBqz
No match
/(A (.*) (CE*){0,6} (*THEN) | A D) (*FAIL)/x
AbcdCBefgBhiBqz
No match
/(A (.*) (CE*){0,6} (*THEN) | A D) z/x
AbcdCBefgBhiBqz
No match
/(?=a(*COMMIT)b|ac)ac|ac/
ac
No match
/(?=a(*COMMIT)b|(ac)) ac | (a)c/x
ac
No match
# ----
/(?(?!b(*THEN)a)bn|bnn)/
bnn
0: bn
/(?!b(*SKIP)a)bn|bnn/
bnn
0: bn
/(?(?!b(*SKIP)a)bn|bnn)/
bnn
0: bn
/(?!b(*PRUNE)a)bn|bnn/
bnn
0: bn
/(?(?!b(*PRUNE)a)bn|bnn)/
bnn
0: bn
/(?!b(*COMMIT)a)bn|bnn/
bnn
0: bn
/(?(?!b(*COMMIT)a)bn|bnn)/
bnn
0: bn
/(?=b(*SKIP)a)bn|bnn/
bnn
No match
/(?=b(*THEN)a)bn|bnn/
bnn
0: bnn
/^(?!a(*SKIP)b)/
ac
0:
/^(?!a(*SKIP)b)../
acd
0: ac
/(?!a(*SKIP)b)../
acd
0: ac
/^(?(?!a(*SKIP)b))/
ac
0:
/^(?!a(*PRUNE)b)../
acd
0: ac
/(?!a(*PRUNE)b)../
acd
0: ac
/(?!a(*COMMIT)b)ac|cd/
ac
0: ac
/\A.*?(?:a|bc)/
ba
0: ba
/^(A(*THEN)B|C(*THEN)D)/
CD
0: CD
1: CD
/(*:m(m)(?&y)(?(DEFINE)(?<y>b))/mark
abc
0: b
MK: m(m
/(*PRUNE:m(m)(?&y)(?(DEFINE)(?<y>b))/mark
abc
0: b
MK: m(m
/(*SKIP:m(m)(?&y)(?(DEFINE)(?<y>b))/mark
abc
0: b
/(*THEN:m(m)(?&y)(?(DEFINE)(?<y>b))/mark
abc
0: b
MK: m(m
/^\d*\w{4}/
1234
0: 1234
123
No match
/^[^b]*\w{4}/
aaaa
0: aaaa
aaa
No match
/^[^b]*\w{4}/i
aaaa
0: aaaa
aaa
No match
/^a*\w{4}/
aaaa
0: aaaa
aaa
No match
/^a*\w{4}/i
aaaa
0: aaaa
aaa
No match
/(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
foofoo
0: foofoo
1: foo
barbar
0: barbar
1: <unset>
2: bar
/(?<n>A)(?:(?<n>foo)|(?<n>bar))\k<n>/dupnames
AfooA
0: AfooA
1: A
2: foo
AbarA
0: AbarA
1: A
2: <unset>
3: bar
** Failers
No match
Afoofoo
No match
Abarbar
No match
/^(\d+)\s+IN\s+SOA\s+(\S+)\s+(\S+)\s*\(\s*$/
1 IN SOA non-sp1 non-sp2(
0: 1 IN SOA non-sp1 non-sp2(
1: 1
2: non-sp1
3: non-sp2
/^ (?:(?<A>A)|(?'B'B)(?<A>A)) (?('A')x) (?(<B>)y)$/x,dupnames
Ax
0: Ax
1: A
BAxy
0: BAxy
1: <unset>
2: B
3: A
/^A\xZ/
A\0Z
0: A\x00Z
/^A\o{123}B/
A\123B
0: ASB
/ ^ a + + b $ /x
aaaab
0: aaaab
/ ^ a + #comment
+ b $ /x
aaaab
0: aaaab
/ ^ a + #comment
#comment
+ b $ /x
aaaab
0: aaaab
/ ^ (?> a + ) b $ /x
aaaab
0: aaaab
/ ^ ( a + ) + + \w $ /x
aaaab
0: aaaab
1: aaaa
/(?:a\Kb)*+/aftertext
ababc
0: b
0+ c
/(?>a\Kb)*/aftertext
ababc
0: b
0+ c
/(?:a\Kb)*/aftertext
ababc
0: b
0+ c
/(a\Kb)*+/aftertext
ababc
0: b
0+ c
1: ab
/(a\Kb)*/aftertext
ababc
0: b
0+ c
1: ab
/(?:x|(?:(xx|yy)+|x|x|x|x|x)|a|a|a)bc/
acb
No match
'\A(?:[^\"]++|\"(?:[^\"]*+|\"\")*+\")++'
NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
0: NON QUOTED "QUOT""ED" AFTER
'\A(?:[^\"]++|\"(?:[^\"]++|\"\")*+\")++'
NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
0: NON QUOTED "QUOT""ED" AFTER
'\A(?:[^\"]++|\"(?:[^\"]++|\"\")++\")++'
NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
0: NON QUOTED "QUOT""ED" AFTER
'\A([^\"1]++|[\"2]([^\"3]*+|[\"4][\"5])*+[\"6])++'
NON QUOTED \"QUOT\"\"ED\" AFTER \"NOT MATCHED
0: NON QUOTED "QUOT""ED" AFTER
1: AFTER
2:
/^\w+(?>\s*)(?<=\w)/
test test
0: tes
/(?P<same>a)(?P<same>b)/g,dupnames
abbaba
0: ab
1: a
2: b
0: ab
1: a
2: b
/(?P<same>a)(?P<same>b)(?P=same)/g,dupnames
abbaba
0: aba
1: a
2: b
/(?P=same)?(?P<same>a)(?P<same>b)/g,dupnames
abbaba
0: ab
1: a
2: b
0: ab
1: a
2: b
/(?:(?P=same)?(?:(?P<same>a)|(?P<same>b))(?P=same))+/g,dupnames
bbbaaabaabb
0: bbbaaaba
1: a
2: b
0: bb
1: <unset>
2: b
/(?:(?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)?/g,dupnames
bbbaaaccccaaabbbcc
No match
/(?P<Name>a)?(?P<Name2>b)?(?(<Name>)c|d)*l/
acl
0: acl
1: a
bdl
0: bdl
1: <unset>
2: b
adl
0: dl
bcl
0: l
/\sabc/
\x{0b}abc
0: \x0babc
/[\Qa]\E]+/
aa]]
0: aa]]
/[\Q]a\E]+/
aa]]
0: aa]]
/A((((((((a))))))))\8B/
AaaB
0: AaaB
1: a
2: a
3: a
4: a
5: a
6: a
7: a
8: a
/A(((((((((a)))))))))\9B/
AaaB
0: AaaB
1: a
2: a
3: a
4: a
5: a
6: a
7: a
8: a
9: a
/A[\8\9]B/
A8B
0: A8B
A9B
0: A9B
# End of testinput1