,the literal , (4410 / 548 / 2C16)
.*any character (except for line terminators), repeated any number of times
\sany whitespace character
+matches at least one character from the set below:
\da digit
-the literal - (4510 / 558 / 2D16)
Non-Capturing Group(?:$|\s) \sany whitespace character
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