Regular Expressions 101

Explanation

Pro

^start of line

Group 1((?:\w+\s?){1,12})

Non-Capturing Group(?:\w+\s?){1,12}

{1,12}repeats the group contents below between 1 and 12 times:

\w+any word character, repeated at least once

\s?optionally matches any whitespace character

.*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.

26 tokens

^((?:\w+\s?){1,12}).*

New

w1 w2 w3 w4 w5 w6 w7 w8 w9 w10 w11 w12. w13 w14 w15

w1 w2 w3 w4 w5 w6 w7 w8 w9 w10 w11 w12. w13 w14 w15