Regular Expressions 101

^start of line

Group 1(.+)

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

$end of line

Non-Capturing Group(?:\n\1)+

+repeats the group contents below at least once:

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

\1the text saved by group 1

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

^(.+)$(?:\n\1)+

New

operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
operator.livrareflori.md
amazon.de
fonts.gstatic.com
fonts.gstatic.com
fonts.gstatic.com
erovoyeurism.net
tugtechnologyandbusiness.com

Substitution

\1