Regular Expressions 101

Pro

Negative Lookbehind(?<!(\w+)\[)

Group 1(\w+)

\w+a Unicode word character, repeated at least once

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 2(\;(?!((\w+)((\;)(\w+)){0,}\])))

\;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Negative Lookahead(?!((\w+)((\;)(\w+)){0,}\]))

Group 3((\w+)((\;)(\w+)){0,}\])

Group 4(\w+)

\w+a Unicode word character, repeated at least once

Group 5((\;)(\w+)){0,}

{0,}repeats the group contents below any number of times:

Group 6(\;)

\;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Group 7(\w+)

\w+a Unicode word character, repeated at least once

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

(?<!(\w+)\[)(\;(?!((\w+)((\;)(\w+)){0,}\])))

New

A;BB;C[1;22];DDD[11;2;33];EEEEE[1111]

A;BB;C[1;22];DDD[11;2;33];EEEEE[1111]