Regular Expressions 101

Pro

1st Alternative\s+

\s+a Unicode whitespace character, repeated at least once

2nd Alternative(?<=\s)'

Positive Lookbehind(?<=\s)

\sa Unicode whitespace character

'the literal ' (39₁₀ / 47₈ / 27₁₆)

3rd Alternative'(?=\s)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Positive Lookahead(?=\s)

\sa Unicode whitespace character

4th Alternative(?<=\w)([,.!?])

Positive Lookbehind(?<=\w)

\wa Unicode word character

Group 1([,.!?])

Character Class[,.!?]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

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

\s+|(?<=\s)'|'(?=\s)|(?<=\w)([,.!?])

New

hello my name is 'joe.' what's your's