*repeats the group contents below any number of times:
\s*any whitespace character, repeated any number of times
$end of string, or before its final line terminator
\w+any word character, repeated at least once
Non-Capturing Group(?:\s*=\s*[\"'][^\"']*[\"'])? ?repeats the group contents below at most once:
\s*any whitespace character, repeated any number of times
=the literal = (6110 / 758 / 3D16)
\s*any whitespace character, repeated any number of times
\"the literal " (3410 / 428 / 2216)
'the literal ' (3910 / 478 / 2716)
Negated Character Class[^\"']* *matches any number of characters outside the set below:
\"the literal " (3410 / 428 / 2216)
'the literal ' (3910 / 478 / 2716)
\"the literal " (3410 / 428 / 2216)
'the literal ' (3910 / 478 / 2716)