Regular Expressions 101

1st Alternative^.*\bEXCLUDE\b.*\R(*SKIP)(*F)

^start of line

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

\ban ASCII word boundary

EXCLUDEthe literal text EXCLUDE (case sensitive)

\ban ASCII word boundary

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

\Ra newline sequence

(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character

(*F)forces the current match attempt to fail at this position

2nd Alternative.+(?:\R(?!.*\bEXCLUDE\b).*)*

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

Non-Capturing Group(?:\R(?!.*\bEXCLUDE\b).*)*

*repeats the group contents below any number of times:

\Ra newline sequence

Negative Lookahead(?!.*\bEXCLUDE\b)

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

\ban ASCII word boundary

EXCLUDEthe literal text EXCLUDE (case sensitive)

\ban ASCII word boundary

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

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

^.*\bEXCLUDE\b.*\R(*SKIP)(*F)|.+(?:\R(?!.*\bEXCLUDE\b).*)*

New

First include this line
EXCLUDE this entire line
include this line
and this as single match
and EXCLUDE this line
Lastly include this line