Regular Expressions 101

Pro

Negative Lookahead(?!.?@.+)

.?optionally matches any Unicode character (except for line terminators)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

.+any Unicode character (except for line terminators), repeated at least once

\sa Unicode whitespace character

Character Class[\w\,\.\!\'\#]+

+matches at least one character from the set below:

\wa Unicode word character

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\!the literal ! (33₁₀ / 41₈ / 21₁₆)

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

\#the literal # (35₁₀ / 43₈ / 23₁₆)

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

(?!.?@.+)\s[\w\,\.\!\'\(\)\#]+

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