Regular Expressions 101

Positive Lookahead(?=\[\d\d.\d\d.\d\d, \d\d:\d\d\])

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\da digit

.any character (except for line terminators)

\da digit

.any character (except for line terminators)

\da digit

, the literal text ,

\da digit

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\da digit

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

g modifier: global. Finds all matches instead of stopping after the first

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Search reference

Regular Expression

(?=\[\d\d.\d\d.\d\d, \d\d:\d\d\])

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