Regular Expressions 101

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

Group 1([^]+?)

[^]+?any character, including newline, repeated at least once

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

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

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

Group 2((?=\(\s*)[^]+?\)|(?!\(\s*)[^]+?)

1st Alternative(?=\(\s*)[^]+?\)

Positive Lookahead(?=\(\s*)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

[^]+?any character, including newline, repeated at least once

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative(?!\(\s*)[^]+?

Negative Lookahead(?!\(\s*)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

[^]+?any character, including newline, repeated at least once

\s+any whitespace character, repeated at least once

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

\s+any whitespace character, repeated at least once

Group 3((?=\(\s*)[^]+?\)|(?!\(\s*)[^]+?)

1st Alternative(?=\(\s*)[^]+?\)

Positive Lookahead(?=\(\s*)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

[^]+?any character, including newline, repeated at least once

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative(?!\(\s*)[^]+?

Negative Lookahead(?!\(\s*)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

[^]+?any character, including newline, repeated at least once

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

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Global pattern flags

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

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26 tokens

Regular Expression

\(\s*([^]+?)\s*\?\s*((?=\(\s*)[^]+?\)|(?!\(\s*)[^]+?)\s+\:\s+((?=\(\s*)[^]+?\)|(?!\(\s*)[^]+?)\s*\)

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