Regular Expressions 101

Pro

\ba Unicode word boundary

colothe literal text colo (case sensitive)

u?optionally matches the literal u (117₁₀ / 165₈ / 75₁₆) (case sensitive)

rthe literal r (114₁₀ / 162₈ / 72₁₆) (case sensitive)

Non-Capturing Group(?:[a-zA-Z’s]+)?

?repeats the group contents below at most once:

Character Class[a-zA-Z’s]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

’the literal ’ (8217₁₀ / 20031₈ / 2019₁₆)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

Positive Lookahead(?=[ .,])

Character Class[ .,]

the literal (32₁₀ / 40₈ / 20₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

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25 tokens

\bcolou?r(?:[a-zA-Z’s]+)?(?=[ .,])

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