^start of line
.*any Unicode character (except for line terminators), repeated any number of times
Negative Lookahead(?!you) youthe literal text you (case sensitive) .*any Unicode character (except for line terminators), repeated any number of times
\?the literal ? (6310 / 778 / 3F16)
$end of line
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
g modifier: global. Finds all matches instead of stopping after the first