Regular Expressions 101

Pro

\w+a Unicode word character, repeated at least once

Non-Capturing Group(?:['.-]\w+\.?)?

?repeats the group contents below at most once:

Character Class['.-]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\w+a Unicode word character, repeated at least once

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\w+(?:['.-]\w+\.?)?

which would find I'm U.S. co-op, include ending. without the . , but not ' - . rd-

which would find I'm U.S. co-op, include ending. without the . , but not ' - . rd-