PCRE version 5.0 13-Sep-2004
/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{\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
/^\/
0: \x81
/^/
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$/
abc
0: abc
*** Failers
No match
qqq\nabc
No match
abc\nzzz
No match
qqq\nabc\nzzz
No match
/\Aabc\Z/m
abc
0: abc
abc\n
0: abc
*** Failers
No match
qqq\nabc
No match
abc\nzzz
No match
qqq\nabc\nzzz
No match
/\A(.)*\Z/s
abc\ndef
0: abc\x0adef
1: f
/\A(.)*\Z/m
*** Failers
0: *** Failers
1: s
abc\ndef
No match
/(?:b)|(?::+)/
b::c
0: b
c::b
0: ::
/[-az]+/
az-
0: az-
*** Failers
0: a
b
No match
/[az-]+/
za-
0: za-
*** Failers
0: a
b
No match
/[a\-z]+/
a-z
0: a-z
*** Failers
0: a
b
No match
/[a-z]+/
abcdxyz
0: abcdxyz
/[\d-]+/
12-34
0: 12-34
*** Failers
No match
aaa
No match
/[\d-z]+/
12-34z
0: 12-34z
*** Failers
No match
aaa
No match
/\x5c/
\\
0: \
/\x20Z/
the Zoo
0: Z
*** Failers
No match
Zulu
No match
/(abc)\1/i
abcabc
0: abcabc
1: abc
ABCabc
0: ABCabc
1: ABC
abcABC
0: abcABC
1: abc
/ab{3cd/
ab{3cd
0: ab{3cd
/ab{3,cd/
ab{3,cd
0: ab{3,cd
/ab{3,4a}cd/
ab{3,4a}cd
0: ab{3,4a}cd
/{4,5a}bc/
{4,5a}bc
0: {4,5a}bc
/^a.b/
a\rb
0: a\x0db
*** Failers
No match
a\nb
No match
/abc$/
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)\500/
abc\x40
0: abc@
1: abc
abc\100
0: abc@
1: abc
/(abc)\5000/
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
/abc\81/
abc\081
0: abc\x0081
abc\0\x38\x31
0: abc\x0081
/abc\91/
abc\091
0: abc\x0091
abc\0\x39\x31
0: abc\x0091
/(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
/ab\gdef/
abgdef
0: abgdef
/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+
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+
abc
0:
0+ abc
0:
0+
/\b/+g
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)+$/
aa
0: aa
1: a
b
0: b
bb
0: bb
*** Failers
No match
ab
No match
/^(?(?=abc)\w{3}:|\d\d)$/
abc:
0: abc:
12
0: 12
*** Failers
No match
123
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 case of aaaaaa is missed out below because I think Perl 5.005_02 gets/
/it wrong; it sets $1 to aaa rather than aa. Compare the following test,/
No match
/where it does set $1 to aa when matching aaaaaa./
No match
/^(a\1?){4}$/
a
No match
aa
No match
aaa
No match
aaaa
0: aaaa
1: a
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
No match
/((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
No match
/((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?)*$/
*** Failers
No match
dbcb
No match
a--
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
/(?(1)a|b)/
/(?(1)b|a)/
a
0: a
/(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:
/^[a-\d]/
abcde
0: a
-things
0: -
0digit
0: 0
*** Failers
No match
bcdef
No match
/^[\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
/\s+/
> \x09\x0a\x0c\x0d\x0b<
0: \x09\x0a\x0c\x0d
/a b/x
ab
No match
/(?!\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 --/
No match
/-- an internal component. --/
No match
/^(?!:) # colon disallowed at start
(?: # start of item
(?: [0-9a-f]{1,4} | # 1-4 hex digits or
(?(1)0 | () ) ) # if null previously matched, fail; else null
: # followed by colon
){1,7} # end item; 1-7 of them required
[0-9a-f]{1,4} $ # final hex number at end of string
(?(1)|.) # check that there was an empty component
/xi
a123::a123
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
/[\z\C]/
z
0: z
C
0: C
/\M/
M
0: M
/(a+)*b/
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
No match
/(?i)reg(?:ul(?:[a]|ae)r|ex)/
REGular
0: REGular
regulaer
0: regulaer
Regex
0: Regex
regulr
0: regul\xe4r
/[--]+/
0: \xc5\xe6\xe5\xe4\xe0
0: \xc5\xe6\xe5\xe4\xff
0: \xc5\xe6\xe5\xe4\xc0
0: \xc5\xe6\xe5\xe4\xdf
/(?<=Z)X./
\x84XAZXB
0: XB
/ End of testinput1 /