Regular Expressions 101

1st Alternative\s*

\s*any whitespace character, repeated any number of times

2nd Alternative$([^()\r\n]+|(?>))$

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 1([^()\r\n]+|(?>))

1st Alternative[^()\r\n]+

Negated Character Class[^()\r\n]+

+matches at least one character outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

2nd Alternative(?>)

Atomic Group(?>) — does not consume characters

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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.

Search reference

Regular Expression

\s*|\(([^()\r\n]+|(?>))\)

New

(C,D) (E,F) (G,H) (J,K)
(C,D)     (E,F) (G,H) (J,K)
((C,D) (E,F) (G,H) (J,K)