Regular Expressions 101

Pro

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\d*a digit, repeated any number of times

Non-Capturing Group(?:([;,])(?:\d+\1)*\d+)?

?repeats the group contents below at most once:

Group 1([;,])

Character Class[;,]

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Non-Capturing Group(?:\d+\1)*

*repeats the group contents below any number of times:

\d+a digit, repeated at least once

\1the text saved by group 1

\d+a digit, repeated at least once

\]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.

25 tokens

\[\d*(?:([;,])(?:\d+\1)*\d+)?\]

New

[1,2,3,20,4]
[5;67;8;1;6]
[123]
[12,23]
[]
[1,2;4;5,6,7;8]