Regular Expressions 101

Explanation
Pro

\ban ASCII word boundary

Group 1(keyword1|keyword2|keyword3)

1st Alternativekeyword1

keyword1the literal text keyword1 (case sensitive)

2nd Alternativekeyword2

keyword2the literal text keyword2 (case sensitive)

3rd Alternativekeyword3

keyword3the literal text keyword3 (case sensitive)

\ban ASCII word boundary

Character Class[r\n]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

rthe literal r (114₁₀ / 162₈ / 72₁₆) (case sensitive)

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

Group 2(\S+)

\S+any non-whitespace 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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

\b(keyword1|keyword2|keyword3)\b[r\n]{1,2}(\S+)

New

This is my keyword1

value

This is my keyword2

value

This is my keyword3

value

This is my keyword1
value

This is my keyword2
value

This is my keyword3
value

This is my keyword3


value

Substitution

This is my keyword1

value

This is my keyword2

value

This is my keyword3

value

This is my keyword1
value

This is my keyword2
value

This is my keyword3
value

This is my keyword3


value