Regular Expressions 101

Non-Capturing Group(?:(?<=[(,])|(?<=\( ))

1st Alternative(?<=[(,])

Positive Lookbehind(?<=[(,])

Character Class[(,]

(the literal ( (40₁₀ / 50₈ / 28₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative(?<=\( )

Positive Lookbehind(?<=\( )

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

aathe literal text aa (case sensitive)

Positive Lookahead(?=[),]| \))

1st Alternative[),]

Character Class[),]

)the literal ) (41₁₀ / 51₈ / 29₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative \)

the literal (32₁₀ / 40₈ / 20₁₆)

\)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.

Search reference

Regular Expression

(?:(?<=[(,])|(?<=\( ))aa(?=[),]| \))

Test String
New

(aa)
The anomalous assignment ( aa)
The anomalous assignment ( aa )
Try to push the handles ( aa,bb) and press on them (aa, bb).

The aa is big
aa,bb are handles
To rescue tyou car call (aaa)
The code is (aabbcc) (aa bb)

Regular Expression

Test StringNew

ExtractionProcessing...

Test String
New

Extraction
Processing...