Regular Expressions 101

Pro

Positive Lookbehind(?<=\d\n)

\da digit

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

Non-Capturing Group(?:.*\n)*?

*?repeats the group contents below any number of times:

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

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

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

Positive Lookahead(?=\n\n|$)

1st Alternative\n\n

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

2nd Alternative$

$end of string, or before its final line terminator

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

(?<=\d\n)(?:.*\n)*?.*(?=\n\n|$)

New

1 Matt
00:00:00,100 --> 00:00:01,500
This is said
by Matt.

2 Lucas
00:00:01,700 --> 00:00:02,300
While this is said by Lucas

1 Matt
00:00:00,100 --> 00:00:01,500
This is said
by Matt.

2 Lucas
00:00:01,700 --> 00:00:02,300
While this is said by Lucas