Regular Expressions 101

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Non-Capturing Group(?:\s*$[^()]*$)*

*repeats the group contents below any number of times:

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

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)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

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26 tokens

Regular Expression

\([^()]*\)(?:\s*\([^()]*\))*

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