Regular Expressions 101

Group 1(\w)

\wany word character

Group 2(\w+(?:-\w+)*)

\w+any word character, repeated at least once

Non-Capturing Group(?:-\w+)*

*repeats the group contents below any number of times:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\w+any word character, repeated at least once

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(\w)(\w+(?:-\w+)*)

New

lower case name
jean-marie
jean-marie-jean
tEST TEST-TEST-tesT