Regular Expressions 101

Explanation

Pro

.*?any character (except for line terminators), repeated any number of times

Group 1(.{0,10}\bred\b.{0,10})

.{0,10}any character (except for line terminators), repeated between 0 and 10 times

\ban ASCII word boundary

redthe literal text red (case sensitive)

\ban ASCII word boundary

.{0,10}any character (except for line terminators), repeated between 0 and 10 times

.*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.

25 tokens

.*?(.{0,10}\bred\b.{0,10}).*

New

Here is a sentence talking about blue.  This sentence talks about red.