Regular Expressions 101

Explanation
Pro

\da Unicode decimal digit

Positive Lookahead(?=\d* )

\d*a Unicode decimal digit, repeated any number of times

the literal (32₁₀ / 40₈ / 20₁₆)

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

\d(?=\d* )

New

mmm     55  v1235
mmm     111 v1241
mmm     22  v2453
mmm     1   v3464
mmm     555 v5353

mmm     55  v1235
mmm     111 v1241
mmm     22  v2453
mmm     1   v3464
mmm     555 v5353