Regular Expressions 101

Explanation

Pro

\ban ASCII word boundary

OPENthe literal text OPEN (case sensitive)

\ban ASCII word boundary

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

*?repeats the group contents below any number of times:

Negative Lookahead(?!\bOPEN\b)

\ban ASCII word boundary

OPENthe literal text OPEN (case sensitive)

\ban ASCII word boundary

.any character (except for line terminators)

\ban ASCII word boundary

STARTthe literal text START (case sensitive)

\ban ASCII word boundary

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.

25 tokens

\bOPEN\b(?:(?!\bOPEN\b).)*?\bSTART\b

New

OPEN [multiline content] OPEN [multiline content] START

OPEN [multiline content] OPEN [multiline content] START