Regular Expressions 101

1st Alternative,(?![^()]*\))

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Negative Lookahead(?![^()]*\))

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)

2nd Alternative(?<=\((?=[^()]{20})[^()]*),

Positive Lookbehind(?<=\((?=[^()]{20})[^()]*)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Positive Lookahead(?=[^()]{20})

Negated Character Class[^()]{20}

{20}matches exactly 20 characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

,(?![^()]*\))|(?<=\((?=[^()]{20})[^()]*),

New

Get index of this comma, but (not this , comma). Get other commas like, or ,or, 1,1 2 ,2. (not this ,) BUT (get index of this comma, if more than 20 characters are inside the parentheses)

Regular Expression

Extraction