Regular Expressions 101

Group 1(.{1,40})

.{1,40}any character (except for line terminators), repeated between 1 and 40 times

\sany 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.

27 tokens

Regular Expression

(.{1,40})\s.*

New

This is some text and it splits if  it goes over the word boundary at 40 characters.