DataMystic

Found the solution:

Perl pattern [(?:((?:[^\t\n\f\r]+))\t(?:(?:\1)))(?:\r\n)] with [$0]
[ ] Match case
[ ] Whole words only
[ ] Case sensitive replace
[ ] Prompt on replace
[ ] Skip prompt if identical
[ ] First only
[X] Extract matches
Maximum text buffer size 4096
[ ] Maximum match ...

i have a long list of email and passwords separated by tab
I need to compare and keep only the lines where email and password are same.
Unable to get it right.
Any heads up will be appreciated.