Regular Expressions 101

Pro

Positive Lookahead(?=.*Apple)

.*any character (except for line terminators), repeated any number of times

Applethe literal text Apple (case sensitive)

Positive Lookahead(?=.*Car)

.*any character (except for line terminators), repeated any number of times

Carthe literal text Car (case sensitive)

Positive Lookahead(?=.*Bat)

.*any character (except for line terminators), repeated any number of times

Batthe literal text Bat (case sensitive)

Negative Lookahead(?!.*(?:,|^)(?:(?!Apple|Bat|Car).)+(?:,|$))

.*any character (except for line terminators), repeated any number of times

Non-Capturing Group(?:,|^)

1st Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative^

^start of line

Non-Capturing Group(?:(?!Apple|Bat|Car).)+

+repeats the group contents below at least once:

Negative Lookahead(?!Apple|Bat|Car)

1st AlternativeApple

Applethe literal text Apple (case sensitive)

2nd AlternativeBat

Batthe literal text Bat (case sensitive)

3rd AlternativeCar

Carthe literal text Car (case sensitive)

.any character (except for line terminators)

Non-Capturing Group(?:,|$)

1st Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative$

$end of line

^start of line

.*any character (except for line terminators), repeated any number of times

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

(?=.*Apple)(?=.*Car)(?=.*Bat)(?!.*(?:,|^)(?:(?!Apple|Bat|Car).)+(?:,|$))^.*$

New

Bat, Car, Apple
Other, Bat, Car, Apple
Car, Bat, Apple
Car, Other, Bat, Apple
Apple, Car, Bat
Apple, Car, Bat, Stick
Bat, Car
Apple
Car, Apple, Bat

Bat, Car, Apple
Other, Bat, Car, Apple
Car, Bat, Apple
Car, Other, Bat, Apple
Apple, Car, Bat
Apple, Car, Bat, Stick
Bat, Car
Apple
Car, Apple, Bat