data-keyword="the literal text data-keyword=" (case sensitive) \s*any whitespace character, repeated any number of times
Negated Character Class[^"]+? +?matches at least one character outside the set below:
"the literal " (3410 / 428 / 2216)
\s*any whitespace character, repeated any number of times
"the literal " (3410 / 428 / 2216)
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