Regular Expressions 101

Explanation
Pro

Group 1(test)

testthe literal text test (case sensitive)

Group 2(\s+)

\s+any whitespace character, repeated at least once

Group 3((abc\s+)){0,}

{0,}repeats the group contents below any number of times:

Group 4(abc\s+)

abcthe literal text abc (case sensitive)

\s+any 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

Detailed match information will be displayed here automatically.

26 tokens

(test)(\s+)((abc\s+)){0,}

test abc abc abc abc

test abc abc abc abc