.*any Unicode character (except for line terminators), repeated any number of times
ga/the literal text ga/ (case sensitive) Negated Character Class[^/$]* *matches any number of characters outside the set below:
/the literal / (4710 / 578 / 2F16)
$the literal $ (3610 / 448 / 2416)
\${4}the literal $ (3610 / 448 / 2416) , repeated exactly 4 times
.*any Unicode character (except for line terminators), repeated any number of times
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