Regular Expressions 101

Pro

^start of line

Group 1(\d+)

\d+a digit, repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(.*(?:\r?\n(?!\d+ +$[a-z]+$).*)*)

.*any character (except for line terminators), repeated any number of times

Non-Capturing Group(?:\r?\n(?!\d+ +$[a-z]+$).*)*

*repeats the group contents below any number of times:

\r?optionally matches a carriage return (ASCII 13)

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

Negative Lookahead(?!\d+ +$[a-z]+$)

\d+a digit, repeated at least once

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[a-z]+

+matches at least one character from the set below:

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

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

.*any character (except for line terminators), repeated any number of times

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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25 tokens

^(\d+) (.*(?:\r?\n(?!\d+ +\([a-z]+\)).*)*)

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