Regular Expressions 101

1st Alternative\bx

\ban ASCII word boundary

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

2nd AlternativeX\b

Xthe literal X (88₁₀ / 130₈ / 58₁₆) (case sensitive)

\ban ASCII word boundary

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.

Search reference

Regular Expression

\bx|X\b

bo x er 
box
in a box 2

canine, dog, X boxer, XBreed,  x