Regular Expressions 101

^start of line

\d{4}a digit, repeated exactly 4 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2}a digit, repeated exactly 2 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2}a digit, repeated exactly 2 times

the literal (32₁₀ / 40₈ / 20₁₆)

\Sany non-whitespace character

.*any character (except for line terminators), repeated any number of times

Non-Capturing Group(?:\r?\n\d{4}\.\d{2}\.\d{2}\b.*)+

+repeats the group contents below at least once:

\r?optionally matches a carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

\d{4}a digit, repeated exactly 4 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2}a digit, repeated exactly 2 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2}a digit, repeated exactly 2 times

\ban ASCII word boundary

.*any character (except for line terminators), repeated any number of times

Non-Capturing Group(?:\r?\n(?!\d{4}\.\d{2}\.\d{2}\b).*)*

*repeats the group contents below any number of times:

\r?optionally matches a carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

Negative Lookahead(?!\d{4}\.\d{2}\.\d{2}\b)

\d{4}a digit, repeated exactly 4 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2}a digit, repeated exactly 2 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2}a digit, repeated exactly 2 times

\ban ASCII word boundary

.*any character (except for line terminators), 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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^\d{4}\.\d{2}\.\d{2} \S.*(?:\r?\n\d{4}\.\d{2}\.\d{2}\b.*)+(?:\r?\n(?!\d{4}\.\d{2}\.\d{2}\b).*)*

New

2020.11.01 SOME TEXT -17,30 83 016,86
2020.10.30
2020.10.30
2020.10.30
2020.10.30
Some text that should be
matched 20.01.2020 as
multiline text
until now
2020.11.01 SOME TEXT -27,30 81 016,86
2020.10.30
Some text that should be
matched 20.01.2020 as
multiline text
until now

2020.10.30