^start of line
\s*a Unicode whitespace character, repeated any number of times
"the literal " (3410 / 428 / 2216)
Negated Character Class[^"]* *matches any number of characters outside the set below:
"the literal " (3410 / 428 / 2216)
"the literal " (3410 / 428 / 2216)
Non-Capturing Group(?:\s*"[^"]*")* *repeats the group contents below any number of times:
\s*a Unicode whitespace character, repeated any number of times
"the literal " (3410 / 428 / 2216)
Negated Character Class[^"]* *matches any number of characters outside the set below:
"the literal " (3410 / 428 / 2216)
"the literal " (3410 / 428 / 2216)
\s*a Unicode whitespace character, repeated any number of times
$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