Regular Expressions 101

Pro

Negative Lookahead(?!(\.|;|,)\s*)

Group 1(\.|;|,)

1st Alternative\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative;

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

3rd Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

Character Class[A-ZÀ-Ý]{1}

{1}matches one character from the set below:

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

À-Ýone character from À (192₁₀) to Ý (221₁₀) (case sensitive)

Character Class[a-zà-ÿ:-]+

+matches at least one character from the set below:

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

à-ÿone character from à (224₁₀) to ÿ (255₁₀) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Non-Capturing Group(?:[a-zA-ZÀ-ÿ:-]\s*)+

+repeats the group contents below at least once:

Character Class[a-zA-ZÀ-ÿ:-]

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

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

À-ÿone character from À (192₁₀) to ÿ (255₁₀) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Group 2(\.|!|\?)

1st Alternative\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative!

!the literal ! (33₁₀ / 41₈ / 21₁₆)

3rd Alternative\?

\?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

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26 tokens

(?!(\.|;|,)\s*)[A-ZÀ-Ý]{1}[a-zà-ÿ:-]+\s*(?:[a-zA-ZÀ-ÿ:-]\s*)+(\.|!|\?)

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