Regular Expressions 101

Group 1(.*?)

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

Non-Capturing Group(?:\s*-\s*)

\s*any whitespace character, repeated any number of times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\s*any whitespace character, repeated any number of times

Group 2(.*)

.*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.

Search reference

Regular Expression

(.*?)(?:\s*-\s*)(.*)

New

My heart will go on - Celine Dion
My heart will go on - Celine Dion
My heart will go on - Celine Dion
My heart will go on -Celine Dion
My heart will go on- Celine Dion
My heart will go on-Celine Dion