Regular Expressions 101

1st Alternative($(?:[^()]++|(?1))*$)(*SKIP)(*FAIL)

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[^()]++

++matches at least one character outside the set below:

(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)

(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character

(*FAIL)forces the current match attempt to fail at this position

2nd Alternative;

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

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

(\((?:[^()]++|(?1))*\))(*SKIP)(*FAIL)|;

New

abcd;ghi;dfsF(adffg;adfsasdf);dfg;(asd;fdsg);ag
zvc;dfasdf;asdga;asd(asd;hsfd)
adsg;(asdg;ASF;DFG;ASDF;);sdafdf
asagf;(fafgf;sadg;sdag;a;gddfg;fd)gsfg;sdfa

asagf;(fafgf(;sadg(;sdag;))a;gddfg;fd)gsfg;sdfa