^start of line
.*?any character (except for line terminators), repeated any number of times
\ban ASCII word boundary
gloomthe literal text gloom (case sensitive) \ban ASCII word boundary
Negative Lookahead(?!.*\n.*\n.*?\belsewhere\b) .*any character (except for line terminators), repeated any number of times
\na line-feed (newline) character (ASCII 10)
.*any character (except for line terminators), repeated any number of times
\na line-feed (newline) character (ASCII 10)
.*?any character (except for line terminators), repeated any number of times
\ban ASCII word boundary
elsewherethe literal text elsewhere (case sensitive) \ban ASCII word boundary
.*any character (except for line terminators), repeated any number of times
\na line-feed (newline) character (ASCII 10)
.*any character (except for line terminators), repeated any number of times
\na line-feed (newline) character (ASCII 10)
.*any character (except for line terminators), repeated any number of times
\n?optionally matches a line-feed (newline) character (ASCII 10)
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