Regular Expressions 101

Pro

1st Alternative(\[quote\](?:(?1)|.)*?\[/quote])(*SKIP)(*F)

Group 1(\[quote\](?:(?1)|.)*?\[/quote])

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

quotethe literal text quote (case sensitive)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Non-Capturing Group(?:(?1)|.)*?

*?repeats the group contents below any number of times:

1st Alternative(?1)

(?1)calls group 1 as a subroutine

2nd Alternative.

.any character

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

/quote]the literal text /quote] (case sensitive)

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

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

2nd Alternative@\w+

@the literal @ (64₁₀ / 100₈ / 40₁₆)

\w+any word character, repeated at least once

Global pattern flags

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

s modifier: single line. Allows a dot to match line terminators

Detailed match information will be displayed here automatically.

25 tokens

(\[quote\](?:(?1)|.)*?\[/quote])(*SKIP)(*F)|@\w+

@friends @john [quote]@and @jane[/quote] @doe
@friends @john [quote]@and [quote] @jane[/quote]@morehere[/quote] @doe

@friends @john [quote]@and @jane[/quote] @doe
@friends @john [quote]@and [quote] @jane[/quote]@morehere[/quote] @doe