\.the literal . (4610 / 568 / 2E16)
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
\h*any horizontal whitespace character, repeated any number of times
Jthe literal J (7410 / 1128 / 4A16) (case sensitive)
jthe literal j (10610 / 1528 / 6A16) (case sensitive)
ackthe literal text ack (case sensitive) ,?optionally matches the literal , (4410 / 548 / 2C16)
isthe literal text is (case sensitive) Negated Character Class[^.\n]* *matches any number of characters outside the set below:
.the literal . (4610 / 568 / 2E16)
\na line-feed (newline) character (ASCII 10)
\.the literal . (4610 / 568 / 2E16)
$end of line
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