Regular Expressions 101

Explanation

Pro

\s*a Unicode whitespace character, repeated any number of times

Non-Capturing Group(?:\[feat[^][]+]|$feat[^()]+$)

1st Alternative\[feat[^][]+]

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

featthe literal text feat (case sensitive)

Negated Character Class[^][]+

+matches at least one character outside the set below:

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

2nd Alternative$feat[^()]+$

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

featthe literal text feat (case sensitive)

Negated Character Class[^()]+

+matches at least one character outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

\s*(?:\[feat[^][]+]|\(feat[^()]+\))

New

Skank Up [feat. Ding Dong] (Oh Lawd)
Skank Up (Oh Lawd) [feat. Ding Dong]
Skank Up (Oh Lawd) (feat. Ding Dong)

Skank Up [feat. Ding Dong] (Oh Lawd)
Skank Up (Oh Lawd) [feat. Ding Dong]
Skank Up (Oh Lawd) (feat. Ding Dong)