Regular Expressions 101

Pro

Group serial(?P<serial>(?:\d+\.)+)

Non-Capturing Group(?:\d+\.)+

+repeats the group contents below at least once:

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

Group description(?P<description>\S+)

\S+any non-whitespace character, repeated at least once

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

(?P<serial>(?:\d+\.)+)\s*(?P<description>\S+)

New

1.1.1. ABC
1.1.2. DEF
1.1.2.3. XYZ

1.1.1. ABC
1.1.2. DEF
1.1.2.3. XYZ