Regular Expressions 101

Pro

^start of line

Event:the literal text Event: (case sensitive)

\s+a Unicode whitespace character, repeated at least once

Task_the literal text Task_ (case sensitive)

Group 1(\d+)

\d+a Unicode decimal digit, repeated at least once

Error:the literal text Error: (case sensitive)

Group 2(NO_ERROR|ERROR_(?:MINOR|\d+))

1st AlternativeNO_ERROR

NO_ERRORthe literal text NO_ERROR (case sensitive)

2nd AlternativeERROR_(?:MINOR|\d+)

ERROR_the literal text ERROR_ (case sensitive)

Non-Capturing Group(?:MINOR|\d+)

1st AlternativeMINOR

MINORthe literal text MINOR (case sensitive)

2nd Alternative\d+

\d+a Unicode decimal digit, repeated at least once

Non-Capturing Group(?:\w+:(\w+))?

?repeats the group contents below at most once:

\w+a Unicode word character, repeated at least once

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 3(\w+)

\w+a Unicode word character, repeated at least once

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.

25 tokens

Regular Expression

^Event:\s+Task_(\d+)Error:(NO_ERROR|ERROR_(?:MINOR|\d+))(?:\w+:(\w+))?

New

Event: Task_01Error:NO_ERROR
Event: Task_01Error:ERROR_MINOR
Event: Task_02Error:NO_ERROR
Event: Task_03Error:ERROR_01Details:BadData
Event: Task_03Error:ERROR_MINOR

Substitution

Event: Task_01Error:NO_ERROR
Event: Task_01Error:ERROR_MINOR
Event: Task_02Error:NO_ERROR
Event: Task_03Error:ERROR_01Details:BadData
Event: Task_03Error:ERROR_MINOR