Regular Expressions 101

Group no_brackets(?<no_brackets>[^\[\]]*){0}

{0}repeats the group contents below exactly 0 times:

Negated Character Class[^\[\]]*

*matches any number of characters outside the set below:

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Group balanced_brackets(?<balanced_brackets>\[\g<no_brackets>\]|\[(?:\g<no_brackets>\g<balanced_brackets>\g<no_brackets>)*\])

1st Alternative\[\g<no_brackets>\]

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\g<no_brackets>calls group no_brackets as a subroutine

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

2nd Alternative\[(?:\g<no_brackets>\g<balanced_brackets>\g<no_brackets>)*\]

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Non-Capturing Group(?:\g<no_brackets>\g<balanced_brackets>\g<no_brackets>)*

*repeats the group contents below any number of times:

\g<no_brackets>calls group no_brackets as a subroutine

\g<balanced_brackets>calls group balanced_brackets as a subroutine

\g<no_brackets>calls group no_brackets as a subroutine

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

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

(?<no_brackets>[^\[\]]*){0}(?<balanced_brackets>\[\g<no_brackets>\]|\[(?:\g<no_brackets>\g<balanced_brackets>\g<no_brackets>)*\])

New

Lorem ipsum [1. dolor sit amet, [consectetuer adipiscing] elit.]. Aenean commodo ligula eget dolor.[2. Dolor, [consectetuer adipiscing] elit.] Aenean massa[3. Lorem ipsum] dolor.

Regular Expression

Substitution