Regular Expressions 101

Pro

^start of line

Group 1([^,:\n\r]+)

Negated Character Class[^,:\n\r]+

+matches at least one character outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

\ra carriage return (ASCII 13)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 2(.*(?:\R(?![^,:\n\r]+:).*)*)

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

Non-Capturing Group(?:\R(?![^,:\n\r]+:).*)*

*repeats the group contents below any number of times:

\Ra newline sequence

Negative Lookahead(?![^,:\n\r]+:)

Negated Character Class[^,:\n\r]+

+matches at least one character outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

\ra carriage return (ASCII 13)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.*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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^([^,:\n\r]+):(.*(?:\R(?![^,:\n\r]+:).*)*)

New

Name: John Doe

Age: 23

Primary Language: English

Description: This is a multiline
description field that I want 
to capture Fri, 02 Sep 2022 14:46:45 -0500

Country: Canada

Substitution

Name: John Doe

Age: 23

Primary Language: English

Description: This is a multiline
description field that I want 
to capture Fri, 02 Sep 2022 14:46:45 -0500

Country: Canada