Regular Expressions 101

Pro

(?m)applies the following effective flags to the remainder of the pattern: gmi

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

Positive Lookbehind(?<=^info)

^start of line

infothe literal text info (case insensitive)

Non-Capturing Group(?:\r?\n){2}

{2}repeats the group contents below exactly 2 times:

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

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Non-Capturing Group(?:\r?\n){2}

{2}repeats the group contents below exactly 2 times:

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

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

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.

27 tokens

(?m)(?<=^info)(?:\r?\n){2}:(?:\r?\n){2}

New

info

:

I went to Paris

xxx

yyy

zzz

info

:

I went to Italy

aaa

bbb

ccc

info

:

I went to Paris

xxx

yyy

zzz

info

:

I went to Italy

aaa

bbb

ccc