Regular Expressions 101

Pro

(?m)applies the following effective flags to the remainder of the pattern: gm

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Branch Reset Group(?|^(\d+):()()|\G^()([-+]?\d+)(?![:\d])[ \t]+(.*)|\G^()()()[ \t]*$\R*)

1st Alternative^(\d+):()()

^start of line

Group 1(\d+)

\d+a digit, repeated at least once

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 2() — does not consume characters

Group 3() — does not consume characters

2nd Alternative\G^()([-+]?\d+)(?![:\d])[ \t]+(.*)

\Gstart of current search

^start of line

Group 1() — does not consume characters

Group 2([-+]?\d+)

Character Class[-+]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\d+a digit, repeated at least once

Negative Lookahead(?![:\d])

Character Class[:\d]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\da digit

Character Class[ \t]+

+matches at least one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Group 3(.*)

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

3rd Alternative\G^()()()[ \t]*$\R*

\Gstart of current search

^start of line

Group 1() — does not consume characters

Group 2() — does not consume characters

Group 3() — does not consume characters

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

$end of line

\R*a newline sequence, repeated any number of times

\R?optionally matches a newline sequence

Global pattern flags

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

No unit tests · Add a test to get started

25 tokens

Regular Expression

(?m)(?|^(\d+):()()|\G^()([-+]?\d+)(?![:\d])[ \t]+(.*)|\G^()()()[ \t]*$\R*)\R?

Unit Tests

There are no unit tests, click to add some.