^start of line
\d+a Unicode decimal digit, repeated at least once
\r?optionally matches a carriage return (ASCII 13)
\na line-feed (newline) character (ASCII 10)
\d{2}a Unicode decimal digit, repeated exactly 2 times
:the literal : (5810 / 728 / 3A16)
\d{2}a Unicode decimal digit, repeated exactly 2 times
:the literal : (5810 / 728 / 3A16)
\d{2}a Unicode decimal digit, repeated exactly 2 times
\.the literal . (4610 / 568 / 2E16)
\d{3}a Unicode decimal digit, repeated exactly 3 times
.*any Unicode character (except for line terminators), repeated any number of times
\r?optionally matches a carriage return (ASCII 13)
\na line-feed (newline) character (ASCII 10)
Group 1((?:(?!\d+\r?\n\d\d:).*(?:\r?\n|$))*) Non-Capturing Group(?:(?!\d+\r?\n\d\d:).*(?:\r?\n|$))* *repeats the group contents below any number of times:
Negative Lookahead(?!\d+\r?\n\d\d:) \d+a Unicode decimal digit, repeated at least once
\r?optionally matches a carriage return (ASCII 13)
\na line-feed (newline) character (ASCII 10)
\da Unicode decimal digit
\da Unicode decimal digit
:the literal : (5810 / 728 / 3A16)
.*any Unicode character (except for line terminators), repeated any number of times
Non-Capturing Group(?:\r?\n|$) \r?optionally matches a carriage return (ASCII 13)
\na line-feed (newline) character (ASCII 10)
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