Regular Expressions 101

Explanation

Pro

^start of string

Group 1([^()[\]{}<>]*)

Negated Character Class[^()[\]{}<>]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2($((?1)(?2)*)*$|\[(?3)*\]|<(?3)*>|{(?3)*})

1st Alternative$((?1)(?2)*)*$

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 3((?1)(?2)*)*

*repeats the group contents below any number of times:

(?1)calls group 1 as a subroutine

(?2)*calls group 2 as a subroutine, repeated any number of times

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative\[(?3)*\]

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

(?3)*calls group 3 as a subroutine, repeated any number of times

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

3rd Alternative<(?3)*>

<the literal < (60₁₀ / 74₈ / 3C₁₆)

(?3)*calls group 3 as a subroutine, repeated any number of times

>the literal > (62₁₀ / 76₈ / 3E₁₆)

4th Alternative{(?3)*}

{the literal { (123₁₀ / 173₈ / 7B₁₆)

(?3)*calls group 3 as a subroutine, repeated any number of times

}the literal } (125₁₀ / 175₈ / 7D₁₆)

(?1)calls group 1 as a subroutine

$end of string, or before its final line terminator

Detailed match information will be displayed here automatically.

25 tokens

^([^()[\]{}<>]*)(\(((?1)(?2)*)*\)|\[(?3)*\]|<(?3)*>|{(?3)*})(?1)$

New

sd{f(tagsad<fas>df(tag(a)sd)sdfa(sdf)s[a(sd)]f)as}df