Regular Expressions 101

Group 1([\r\n]+)

Character Class[\r\n]+

+matches at least one character from the set below:

\ra carriage return (ASCII 13)

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

Positive Lookahead(?=[A-Z][a-z]{2}\s+\d{1,2}\s\d{2}:\d{2}:\d{2}\s)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-z]{2}

{2}matches exactly 2 characters from the set below:

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

\s+any whitespace character, repeated at least once

\d{1,2}a digit, repeated between 1 and 2 times

\sany whitespace character

\d{2}a digit, repeated exactly 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a digit, repeated exactly 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a digit, repeated exactly 2 times

\sany whitespace character

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

No unit tests · Add a test to get started

25 tokens

Regular Expression

([\r\n]+)(?=[A-Z][a-z]{2}\s+\d{1,2}\s\d{2}:\d{2}:\d{2}\s)

There are no unit tests, click to add some.