: regex zero width extension tests 2001-05-25

{E (?#aha)a a (0,1) (?...) not supported

# comments

E (?#aha)abc(?# foo ) aaabczz (2,5)

E (?#oops aaabczz EPAREN

# lookahead

E abc(?=foo) abcabcfoo (3,6)

E abc(?=foo) abcabcfoobar (3,6)

E abc(?=foo)foo abcabcfoofoo (3,9)

E abc(?=foo)foo abcabcfoobar (3,9)

E abc(?=foo)bar abcabcfoobar NOMATCH

E abc(foo)(bar) abcabcfoobar (3,12)(6,9)(9,12)

E abc(?=foo)(bar) abcabcfoobar NOMATCH

E abc(?=foo)(foo) abcabcfoobar (3,9)(6,9)

E abc(?=foo)foobar abcabcfoobar (3,12)

E abc(?=foo)(foo)bar abcabcfoobar (3,12)(6,9)

# anonymous groups

E abc(?:foo) abcabcfoo (3,9)

E abc(?:foo)foo abcabcfoo NOMATCH

E abc(?:foo)bar abcabcfoobar (3,12)

E abc(?:foo)(bar) abcabcfoobar (3,12)(9,12)

E (?=abc) xxabcabcxx (2,2)

E (?=abc)? xxabcabcxx BADRPT

E (?=abc)* xxabcabcxx BADRPT

E (?=abc)+ xxabcabcxx BADRPT

E (?:abc) xxabcabcxx (2,5)

E .(?:abc) xxabcabcxx (1,5)

E (?:abc). xxabcabcxx (2,6)

E .(?:abc). xxabcabcxx (1,6)

E ..(?:abc) xxabcabcxx (0,5)

E (?:abc).. xxabcabcxx (2,7)

E ..(?:abc).. xxabcabcxx (0,7)

E (?:abc)? xxabcabcxx (0,0)

E .(?:abc)? xxabcabcxx (0,1)

E (?:abc)?. xxabcabcxx (0,1)

E .(?:abc)?. xxabcabcxx (0,2)

E ..(?:abc)? xxabcabcxx (0,5)

E (?:abc)?.. xxabcabcxx (0,2)

E ..(?:abc)?.. xxabcabcxx (0,7)

E (?:abc){1} xxabcabcxx (2,5)

E .(?:abc){1} xxabcabcxx (1,5)

E (?:abc){1}. xxabcabcxx (2,6)

E .(?:abc){1}. xxabcabcxx (1,6)

E ..(?:abc){1} xxabcabcxx (0,5)

E (?:abc){1}.. xxabcabcxx (2,7)

E ..(?:abc){1}.. xxabcabcxx (0,7)

E (?:abc)(?:abc) xxabcabcxx (2,8)

E (?:abc)* xxabcabcxx (0,0)

E (?:abc)+ xxabcabcxx (2,8)

E (?:abc){2} xxabcabcxx (2,8)

E (?:abc)*? xxabcabcxx (0,0)

E (?:abc)+? xxabcabcxx (2,5)

E (?:abc){2}? xxabcabcxx (2,8)

# sanity check

E (abc) xxabcabcxx (2,5)(2,5)

E (abc)? xxabcabcxx (0,0)

E ..(abc)? xxabcabcxx (0,5)(2,5)

E (abc)?.. xxabcabcxx (0,2)

E ..(abc)?.. xxabcabcxx (0,7)(2,5)

E (abc){1} xxabcabcxx (2,5)(2,5)

E (abc)(abc) xxabcabcxx (2,8)(2,5)(5,8)

E (abc)* xxabcabcxx (0,0)

E (abc)+ xxabcabcxx (2,8)(5,8)

E (abc){2} xxabcabcxx (2,8)(5,8)

E (abc)*? xxabcabcxx (0,0)

E (abc)+? xxabcabcxx (2,5)(2,5)

E (abc){2}? xxabcabcxx (2,8)(5,8)

# scoped flags

E (?i)Hello.Hello Hello Hello (0,11)

E (?i)hello.hello Hello Hello (0,11)

E (?i)hello.(?-i)hello Hello Hello NOMATCH

E (?i:hello).(?-i:hello) Hello Hello NOMATCH

E (?i)hello.(?-i)Hello Hello Hello (0,11)

E (?i:hello).hello Hello Hello NOMATCH

E (?i:hello).Hello Hello Hello (0,11)

Ei (?i)hello.(?-i)hello Hello Hello NOMATCH

Ei hello.(?-i)hello Hello Hello NOMATCH

Ei hello.(?-i)Hello Hello Hello (0,11)

# xxx

E ..(abc)+.. xxabcabcxx (0,10)(5,8)

E ..(?:abc)+.. xxabcabcxx (0,10)

E ..(?:abc)*.. xxabcabcxx (0,10)

E ..(?:abc)?.. xxabcabcxx (0,7)

E (..)(?:abc)+(..) xxabcabcxx (0,10)(0,2)(8,10)

E (..)(?:abc)*(..) xxabcabcxx (0,10)(0,2)(8,10)

E (..)(?:abc)?(..) xxabcabcxx (0,7)(0,2)(5,7)

# shell can do it too

K *+([0-9]) abc123xyz (0,6)(5,6)

K *+(\d) abc123xyz (0,6)(5,6)

K ~(E).*([0-9])+ abc123xyz (0,6)(5,6)

K ~(E).*(\d)+ abc123xyz (0,6)(5,6)

E .*([0-9])+ abc123xyz (0,6)(5,6)

E .*(\d)+ abc123xyz (0,6)(5,6)

E (?K)*+([0-9]) abc123xyz NOMATCH

E (?K)*+([0-9])* abc123xyz (0,9)(5,6)

E (?K-lr)*+([0-9]) abc123xyz (0,6)(5,6)

E (?K-a)*+([0-9]) abc123xyz (0,6)(5,6)

E (?K)*+(\d) abc123xyz NOMATCH

E (?K)*+(\d)* abc123xyz (0,9)(5,6)

E (?K-lr)*+(\d) abc123xyz (0,6)(5,6)

E (?K-a)*+(\d) abc123xyz (0,6)(5,6)

# backtracking

Ei \b(foo)\s+(\w+) Food is on the foo table. (15,24)(15,18)(19,24)

Ei foo(.*)bar The food is under the bar in the barn. (4,36)(7,33)

Ei foo(.*?)bar The food is under the bar in the barn. (4,25)(7,22)

E ^\D*(?!123) ABC123 (0,2)

E ^(ABC) ABC123 (0,3)(0,3)

E ^(ABC) ABC445 (0,3)(0,3)

E ^(\D*) ABC123 (0,3)(0,3)

E ^(\D*) ABC445 (0,3)(0,3)

E ^(ABC)(?=123) ABC123 (0,3)(0,3)

E ^(ABC)(?!123) ABC123 NOMATCH

E ^(ABC)(?!123) ABC445 (0,3)(0,3)

A ^(\D*)(123)! ABC123 (0,6)(0,2)

A ^(\D*)(?:(123)!) ABC123 (0,6)(0,2)

A ^(\D*)(123)! ABC445 (0,6)(0,3)

A ^(\D*)(?:(123)!) ABC445 (0,6)(0,3)

E ^(\D*)(123) ABC123 (0,6)(0,3)(3,6)

E ^(\D*)(?:123) ABC123 (0,6)(0,3)

E ^(\D*)(?=123) ABC123 (0,3)(0,3)

E ^(\D*)(?!123) ABC123 (0,2)(0,2)

E ^(\D*)(?!123) ABC445 (0,3)(0,3)

E ^(\D*)(?=\d) ABC123 (0,3)(0,3)

E ^(\D*)(?=\d) ABC445 (0,3)(0,3)

E ^(\D*)(?=\d)(?!123) ABC123 NOMATCH

E ^(\D*)(?=\d)(?!123) ABC445 (0,3)(0,3)

E (.*)(\d*) I have 2 numbers: 53147 (0,23)(0,23)(23,23)

E (.*)(\d+) I have 2 numbers: 53147 (0,23)(0,22)(22,23)

E (.*?)(\d*) I have 2 numbers: 53147 (0,0)(0,0)(0,0)

E (.*?)(\d+) I have 2 numbers: 53147 (0,8)(0,7)(7,8)

E (.*)(\d+)$ I have 2 numbers: 53147 (0,23)(0,22)(22,23)

E (.*?)(\d+)$ I have 2 numbers: 53147 (0,23)(0,18)(18,23)

E (.*)\b(\d+)$ I have 2 numbers: 53147 (0,23)(0,18)(18,23)

E (.*\D)(\d+)$ I have 2 numbers: 53147 (0,23)(0,18)(18,23)

E \(([^()]+|\([^()]*\))+\) ((()aaaaaaaaaaaaa NOMATCH

E \(((?>[^()]+)|\([^()]*\))+\) ((()aaaaaaaaaaaaa NOMATCH

E ^(?:a*)ab aaaaaaaaaaaaab (0,14)

E ^(?>a*)ab aaaaaaaaaaaaab NOMATCH

# lookbehind

A (abc)foo abcabcfoo (3,9)(3,6)

A (?:abc)foo abcabcfoo (3,9)

A (abc&.*c)foo abcabcfoo (3,9)(3,6)

A (?:abc&.*c)foo abcabcfoo (3,9)

E abcfoo(?<=foo) abcabcfoo (3,9)

E abc(?<=abc)foo abcabcfoo (3,9)

E (?<=goo)bar foobargoobar (9,12)

E (?<!goo)bar foobargoobar (3,6)

E (?<!foo)bar foobargoobar (9,12)

E abc.*(?<=foo)bar abcabcfoobar (0,12)

E abc(foo)(bar) abcabcfoobar (3,12)(6,9)(9,12)

# external callouts

{E abc(?{ABC}) <abc> (1,4){ABC}(1:1) external callouts not supported

E (abc(?{ABC})|xyz(?{XYZ})) <abc> (1,4)(1,4){ABC}(1:1)

E (abc(?{ABC})|xyz(?{XYZ}))+ <abcxyz> (1,7)(4,7){ABC}(1:4){XYZ}(2:1)

E (abc(?{1ABC})|xyz(?{XYZ}))+ <abcxyz> (4,7)(4,7){1ABC}(1:4){XYZ}(2:1)

E (a.c(?{1ABC})|abc(?{XYZ})) <abcxyz> (1,4)(1,4){1ABC}(1:4){XYZ}(2:4)

K abc~({ABC}) <abc> (1,4){ABC}(1:1)

K (abc~({ABC})|xyz~({XYZ})) <abc> (1,4)(1,4){ABC}(1:1)

K +(abc~({ABC})|xyz~({XYZ})) <abcxyz> (1,7)(1,7){ABC}(1:4){XYZ}(2:1)

K +(abc~({1ABC})|xyz~({XYZ})) <abcxyz> (4,7)(4,7){1ABC}(1:4){XYZ}(2:1)

K (abc~({ABC})|*~({XYZ})) <abcxyz> (0,8)(0,8)

K ~(o:abc~({ABC})|*~({XYZ})) <abcxyz> NOMATCH

Km (abc~({ABC})|*~({XYZ})) <abcxyz> (0,0)(0,0)

K ((abc~({ABC}))|(*~({XYZ}))) <abcxyz> (0,8)(0,8)(?,?)(0,8)

Km ((abc~({ABC}))|(*~({XYZ}))) <abcxyz> (0,0)(0,0)(?,?)(0,0)

K ((abc~({ABC}))|(*c~({XYZ}))) <abcxyz> (0,4)(0,4)(?,?)(0,4)

Km ((abc~({ABC}))|(*c~({XYZ}))) <abcxyz> (0,4)(0,4)(?,?)(0,4)

K (a?c~({ABC})|abc~({XYZ})) <abcxyz> (1,4)(1,4){ABC}(1:4){XYZ}(2:4)

K (a?c~({1ABC})|abc~({XYZ})) <abcxyz> (1,4)(1,4){1ABC}(1:4){XYZ}(2:4)

}

}