Regular Expressions 101

^start of line

Group 1(\w+)

\w+any word character, repeated at least once

: the literal text :

Group 2(.*)

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

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

\1the text saved by group 1

: the literal text :

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.

Search reference

Regular Expression

^(\w+): (.*)\n\1:

New

abc: bla1 bla1 bla1...
abc: bla2 bla2 bla2...
bcd: bla bla bla...
cde: bla bla bla...
ghk: bla1 bla1 bla1...
ghk: bla2 bla2 bla2...
lmn: bla bla bla...
xyz: bla bla bla...

Regular Expression

Extraction