*repeats the group contents below any number of times:
\s*any whitespace character, repeated any number of times
"the literal " (3410 / 428 / 2216)
\d+a digit, repeated at least once
"the literal " (3410 / 428 / 2216)
\s*any whitespace character, repeated any number of times
:the literal : (5810 / 728 / 3A16)
\s*any whitespace character, repeated any number of times
\d+a digit, repeated at least once
Non-Capturing Group(?:\.\d+)? ?repeats the group contents below at most once:
\.the literal . (4610 / 568 / 2E16)
\d+a digit, repeated at least once
,the literal , (4410 / 548 / 2C16)
\na line-feed (newline) character (ASCII 10)