Regular Expressions 101

Negative Lookbehind(?<!\b\p{L})

\ban ASCII word boundary

\p{L}any Unicode letter

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negative Lookbehind(?<!\d.(?=\d))

\da digit

.any character (except for line terminators)

Positive Lookahead(?=\d)

\da digit

Negative Lookahead(?!\s*$)

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

$end of line

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

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.

Search reference

Regular Expression

(?<!\b\p{L})\.(?<!\d.(?=\d))(?!\s*$)\s*

New

At 12.51 p.m. local time, J. Knapp, former U.S. Navy,  went out for a walk. Yes he did. And then a Mw6.3 earthquake happened.

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