How to remove part of the text with a regular expression?

Question

Regular Expressions

There are lines like:

SITE.RU	REGRU-RU	31.10.2018	31.10.2020	01.12.2020	1
TEST.RU	REGRU-RU	27.07.2020	27.07.2021	27.08.2021	1
SOME.RU  REGRU-RU	03.10.2019	03.10.2021	03.11.2021	0

What unites them is that all domains here are .RU and there is a line break.
How to delete all text after .RU before line break in Sublime?

Answer 1

Maybe a replacement like this?
(\.RU)\s[^\r\n]*([\r\n])
$1$2