Agreed. Nesting is used a lot. E.g.
'''''Note:''' this has not yet been verified.''
Removing it is, imho, unthinkable.
That's the kind of thing my idea of a tidier could deal with - it just
has to add four apostrophes before the word "this" and all is solved.
(Maybe with some separators - depends on the details of the new
parser.)