Regular Expressions 101

^start of line

\d+a digit, repeated at least once

Non-Capturing Group(?:\s*,\s*\d+)*

*repeats the group contents below any number of times:

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

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

\d+a digit, repeated at least once

$end of line

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

^\d+(?:\s*,\s*\d+)*$

New

1, 434, 634, 8
1 2 4
1, 2, 4,