Regular expression exclude some words but match to one
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0
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Is it possible to write a regex which is matching to "findme" but doesn't match if the line contains "black" or "red" or "yellow" words?
Possible regex: (?!black|red|yellow)findme
excluded words: yellow , black , red
Test lines:
findme (OK)
xyz (NOT!)
XYZfindmeXYZ (OK)
somethingelseFINDMEsome_thingelse (OK)
BLACK_ findme (NOT !)
BLACK findme (NOT !)
XyBlacK findme xyz_xy (NOT !)
xy findme RED (NOT !)
yellow__ findme _xy (NOT !)
_xy_ findme _something (OK)
regex regex-negation regex-lookarounds
asked Nov 9 at 16:16
user2287094
358
add a comment |
up vote
0
down vote
favorite
Is it possible to write a regex which is matching to "findme" but doesn't match if the line contains "black" or "red" or "yellow" words?
Possible regex: (?!black|red|yellow)findme
excluded words: yellow , black , red
Test lines:
findme (OK)
xyz (NOT!)
XYZfindmeXYZ (OK)
somethingelseFINDMEsome_thingelse (OK)
BLACK_ findme (NOT !)
BLACK findme (NOT !)
XyBlacK findme xyz_xy (NOT !)
xy findme RED (NOT !)
yellow__ findme _xy (NOT !)
_xy_ findme _something (OK)
regex regex-negation regex-lookarounds
asked Nov 9 at 16:16
user2287094
358
In what context? What language are you working with? What are you trying to achieve?
– Andy Lester
Nov 9 at 18:21
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Is it possible to write a regex which is matching to "findme" but doesn't match if the line contains "black" or "red" or "yellow" words?
Possible regex: (?!black|red|yellow)findme
excluded words: yellow , black , red
Test lines:
findme (OK)
xyz (NOT!)
XYZfindmeXYZ (OK)
somethingelseFINDMEsome_thingelse (OK)
BLACK_ findme (NOT !)
BLACK findme (NOT !)
XyBlacK findme xyz_xy (NOT !)
xy findme RED (NOT !)
yellow__ findme _xy (NOT !)
_xy_ findme _something (OK)
regex regex-negation regex-lookarounds
asked Nov 9 at 16:16
user2287094
358
Is it possible to write a regex which is matching to "findme" but doesn't match if the line contains "black" or "red" or "yellow" words?
Possible regex: (?!black|red|yellow)findme
excluded words: yellow , black , red
Test lines:
findme (OK)
xyz (NOT!)
XYZfindmeXYZ (OK)
somethingelseFINDMEsome_thingelse (OK)
BLACK_ findme (NOT !)
BLACK findme (NOT !)
XyBlacK findme xyz_xy (NOT !)
xy findme RED (NOT !)
yellow__ findme _xy (NOT !)
_xy_ findme _something (OK)
regex regex-negation regex-lookarounds
regex regex-negation regex-lookarounds
asked Nov 9 at 16:16
user2287094
358
asked Nov 9 at 16:16
user2287094
358
asked Nov 9 at 16:16
user2287094
358
asked Nov 9 at 16:16
user2287094
358
asked Nov 9 at 16:16
user2287094
358
358
In what context? What language are you working with? What are you trying to achieve?
– Andy Lester
Nov 9 at 18:21
add a comment |
In what context? What language are you working with? What are you trying to achieve?
– Andy Lester
Nov 9 at 18:21
In what context? What language are you working with? What are you trying to achieve?
– Andy Lester
Nov 9 at 18:21
In what context? What language are you working with? What are you trying to achieve?
– Andy Lester
Nov 9 at 18:21
add a comment |
2 Answers
2
active
oldest
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up vote
1
down vote
You can use the following regex:
^(?!.*(?:black|red|yellow)).*(findme)
Demo: https://regexr.com/42r4q
Details:
^- matches start of the string(?!)- negative lookahead.*- Match any character (except newlines) 0+ times(?:)- non-capturing groupblack|red|yellow- matches 'black', 'red' or 'yellow'findme- matches 'findme' string
Flags:
g- globali- case-insensitivem- multiline
answered Nov 9 at 16:23
rv7
2,1751323
1
You don’t need the trailing look ahead. The first look ahead covers the entire input.
– Bohemian♦
Nov 9 at 18:07
Aha! thanks. I just noticed the fact.
– rv7
Nov 9 at 18:12
add a comment |
up vote
0
down vote
Use a negative look ahead, anchored to start, for the unwanted terms:
^(?i)(?!.*(black|red|yellow)).*findme
See live demo passing all your tests.
(?i) means “ignore case"(?!...) is a negative look ahead (asserts without consuming that the expression is not found)
answered Nov 9 at 18:10
Bohemian♦
293k63412551
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
You can use the following regex:
^(?!.*(?:black|red|yellow)).*(findme)
Demo: https://regexr.com/42r4q
Details:
^- matches start of the string(?!)- negative lookahead.*- Match any character (except newlines) 0+ times(?:)- non-capturing groupblack|red|yellow- matches 'black', 'red' or 'yellow'findme- matches 'findme' string
Flags:
g- globali- case-insensitivem- multiline
answered Nov 9 at 16:23
rv7
2,1751323
1
You don’t need the trailing look ahead. The first look ahead covers the entire input.
– Bohemian♦
Nov 9 at 18:07
Aha! thanks. I just noticed the fact.
– rv7
Nov 9 at 18:12
add a comment |
up vote
1
down vote
You can use the following regex:
^(?!.*(?:black|red|yellow)).*(findme)
Demo: https://regexr.com/42r4q
Details:
^- matches start of the string(?!)- negative lookahead.*- Match any character (except newlines) 0+ times(?:)- non-capturing groupblack|red|yellow- matches 'black', 'red' or 'yellow'findme- matches 'findme' string
Flags:
g- globali- case-insensitivem- multiline
answered Nov 9 at 16:23
rv7
2,1751323
1
You don’t need the trailing look ahead. The first look ahead covers the entire input.
– Bohemian♦
Nov 9 at 18:07
Aha! thanks. I just noticed the fact.
– rv7
Nov 9 at 18:12
add a comment |
up vote
1
down vote
up vote
1
down vote
You can use the following regex:
^(?!.*(?:black|red|yellow)).*(findme)
Demo: https://regexr.com/42r4q
Details:
^- matches start of the string(?!)- negative lookahead.*- Match any character (except newlines) 0+ times(?:)- non-capturing groupblack|red|yellow- matches 'black', 'red' or 'yellow'findme- matches 'findme' string
Flags:
g- globali- case-insensitivem- multiline
answered Nov 9 at 16:23
rv7
2,1751323
You can use the following regex:
^(?!.*(?:black|red|yellow)).*(findme)
Demo: https://regexr.com/42r4q
Details:
^- matches start of the string(?!)- negative lookahead.*- Match any character (except newlines) 0+ times(?:)- non-capturing groupblack|red|yellow- matches 'black', 'red' or 'yellow'findme- matches 'findme' string
Flags:
g- globali- case-insensitivem- multiline
answered Nov 9 at 16:23
rv7
2,1751323
edited Nov 9 at 18:26
answered Nov 9 at 16:23
rv7
2,1751323
answered Nov 9 at 16:23
rv7
2,1751323
answered Nov 9 at 16:23
rv7
2,1751323
2,1751323
1
You don’t need the trailing look ahead. The first look ahead covers the entire input.
– Bohemian♦
Nov 9 at 18:07
Aha! thanks. I just noticed the fact.
– rv7
Nov 9 at 18:12
add a comment |
1
You don’t need the trailing look ahead. The first look ahead covers the entire input.
– Bohemian♦
Nov 9 at 18:07
Aha! thanks. I just noticed the fact.
– rv7
Nov 9 at 18:12
1
1
You don’t need the trailing look ahead. The first look ahead covers the entire input.
– Bohemian♦
Nov 9 at 18:07
You don’t need the trailing look ahead. The first look ahead covers the entire input.
– Bohemian♦
Nov 9 at 18:07
Aha! thanks. I just noticed the fact.
– rv7
Nov 9 at 18:12
Aha! thanks. I just noticed the fact.
– rv7
Nov 9 at 18:12
add a comment |
up vote
0
down vote
Use a negative look ahead, anchored to start, for the unwanted terms:
^(?i)(?!.*(black|red|yellow)).*findme
See live demo passing all your tests.
(?i) means “ignore case"(?!...) is a negative look ahead (asserts without consuming that the expression is not found)
answered Nov 9 at 18:10
Bohemian♦
293k63412551
add a comment |
up vote
0
down vote
Use a negative look ahead, anchored to start, for the unwanted terms:
^(?i)(?!.*(black|red|yellow)).*findme
See live demo passing all your tests.
(?i) means “ignore case"(?!...) is a negative look ahead (asserts without consuming that the expression is not found)
answered Nov 9 at 18:10
Bohemian♦
293k63412551
add a comment |
up vote
0
down vote
up vote
0
down vote
Use a negative look ahead, anchored to start, for the unwanted terms:
^(?i)(?!.*(black|red|yellow)).*findme
See live demo passing all your tests.
(?i) means “ignore case"(?!...) is a negative look ahead (asserts without consuming that the expression is not found)
answered Nov 9 at 18:10
Bohemian♦
293k63412551
Use a negative look ahead, anchored to start, for the unwanted terms:
^(?i)(?!.*(black|red|yellow)).*findme
See live demo passing all your tests.
(?i) means “ignore case"(?!...) is a negative look ahead (asserts without consuming that the expression is not found)
answered Nov 9 at 18:10
Bohemian♦
293k63412551
edited Nov 9 at 18:16
answered Nov 9 at 18:10
Bohemian♦
293k63412551
answered Nov 9 at 18:10
Bohemian♦
293k63412551
answered Nov 9 at 18:10
Bohemian♦
293k63412551
293k63412551
add a comment |
add a comment |
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In what context? What language are you working with? What are you trying to achieve?
– Andy Lester
Nov 9 at 18:21