Regular Expressions 101

Positive Lookbehind(?<=^.+\t+\n)

^start of line

.+any character (except for line terminators), repeated at least once

\t+a tab character (ASCII 9), repeated at least once

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

Character Class[\w\d\n ]+

+matches at least one character from the set below:

\wany word character

\da digit

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

the literal (32₁₀ / 40₈ / 20₁₆)

Positive Lookahead(?=^.+\t+\n|$)

1st Alternative^.+\t+\n

^start of line

.+any character (except for line terminators), repeated at least once

\t+a tab character (ASCII 9), repeated at least once

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

2nd Alternative$

$end of line

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

Detailed match information will be displayed here automatically.

26 tokens

Regular Expression

(?<=^.+\t+\n)[\w\d\n ]+(?=^.+\t+\n|$)

New

SA DOG:犬					
sa1 bob
sa2
HEADING2				
after the 2nd heading
line
3RD FINAL HEADING				
blah blah
blah blah