Regular Expressions 101

HEADLINEthe literal text HEADLINE (case sensitive)

Non-Capturing Group(?:(?!HEADLINE)[\s\S])*

*repeats the group contents below any number of times:

Negative Lookahead(?!HEADLINE)

HEADLINEthe literal text HEADLINE (case sensitive)

Character Class[\s\S]

\sany whitespace character

\Sany non-whitespace character

Negative Lookbehind(?<!NON-)

NON-the literal text NON- (case sensitive)

ARCthe literal text ARC (case sensitive)

Non-Capturing Group(?:(?!HEADLINE)[\s\S])*

*repeats the group contents below any number of times:

Negative Lookahead(?!HEADLINE)

HEADLINEthe literal text HEADLINE (case sensitive)

Character Class[\s\S]

\sany whitespace character

\Sany non-whitespace character

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

HEADLINE(?:(?!HEADLINE)[\s\S])*(?<!NON-)ARC(?:(?!HEADLINE)[\s\S])*

New

HEADLINE
Subheader Author
NON-ARC 0.1-1
20190211

HEADLINE
Subheader Author
ARC 0.1-1
20190211

HEADLINE
Subheader Author
NON-ARC 0.1-1
20190211

HEADLINE
Subheader Author
20190211

HEADLINE
Subheader Author
ARC 0.1-1
20190211