^start of line
.*any character (except for line terminators), repeated any number of times
.+any character (except for line terminators), repeated at least once
.*any character (except for line terminators), repeated any number of times
-the literal - (4510 / 558 / 2D16)
\2the text saved by group 2
=the literal = (6110 / 758 / 3D16)
.any character (except for line terminators)
\1the text saved by group 1
\3the text saved by group 3
$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