Regular Expressions 101

Explanation

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

\w+any word character, repeated at least once

Positive Lookahead(?=\h+keyword$)

\h+any horizontal whitespace character, repeated at least once

keywordthe literal text keyword (case sensitive)

$end of line

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

(?m)\w+(?=\h+keyword$)

New

this is some text keyword this is some text keyword
this is some text keyword

this is some text keyword this is some text keyword
this is some text keyword