Regular Expressions 101

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

Group 1(\[(?:[^][]++|(?1))*])

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

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 ] (93₁₀ / 135₈ / 5D₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

2nd Alternative(?1)

(?1)calls group 1 as a subroutine

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

(*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 - (45₁₀ / 55₈ / 2D₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

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

New

abc-def]
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