\ba Unicode word boundary
abcthe literal text abc (case sensitive) \ba Unicode word boundary
Negative Lookahead(?! abc\b) abcthe literal text abc (case sensitive) \ba Unicode word boundary
.*?any Unicode character (except for line terminators), repeated any number of times
\ba Unicode word boundary
\ba Unicode word boundary
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