Regular Expressions 101

Pro

Group 1($(?:[^()]|(?1))*$)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Non-Capturing Group(?:[^()]|(?1))*

*repeats the group contents below any number of times:

1st Alternative[^()]

Negated Character Class[^()]

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative(?1)

(?1)calls group 1 as a subroutine

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negative Lookahead(?!.*\()

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

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

(\((?:[^()]|(?1))*\))(?!.*\()

New

abcdefgh(i) jklmno(pqrs3), uvwxyz
abcdefghi jklmn(opq1st), uvwxyz
abcdefghi jklmn(o_q(1s3)), uvwxyz
abcdef(gh)i jklmno(pq(1s3)), uvwxyz

abcdefgh(i) jklmno(pqrs3), uvwxyz
abcdefghi jklmn(opq1st), uvwxyz
abcdefghi jklmn(o_q(1s3)), uvwxyz
abcdef(gh)i jklmno(pq(1s3)), uvwxyz