Regular Expressions 101

Non-Capturing Group(?:[a-z]\))?

?repeats the group contents below at most once:

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Group 1([\s\S]+?)

Character Class[\s\S]+?

+?matches at least one character from the set below:

\sany whitespace character

\Sany non-whitespace character

Non-Capturing Group(?:<br\s*\/>\s*)?

?repeats the group contents below at most once:

<brthe literal text <br (case sensitive)

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

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

Positive Lookahead(?=[a-z]{1}\)|$)

1st Alternative[a-z]{1}\)

Character Class[a-z]{1}

{1}matches one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative$

$end of string

Global pattern flags

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

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Search reference

Regular Expression

(?:[a-z]\))?([\s\S]+?)(?:<br\s*\/>\s*)?(?=[a-z]{1}\)|$)

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