Some subclasses of GeneratedCodeMarkerComment regex match against `getLine(_)`.
When evaluated, this results in multiple scans (one per subclass that uses it)
of all comment lines in the database, before regex matching against those lines.
To make these scans smaller, regex match against the entire comment text
without splitting them into lines.
This is achieved using `?m` (multiline) and line boundaries in the regexes.