[DiapDealer]

Kind of hard to do this with typographic quotes (or even straight quotes) with any sort of automated/logical approach. Since there's no difference between an apostrophe and a closing single quote (and other special cases where opening quotes don't always have a matching closing quote), it's not really very feasible with a regex expression (especially when any F&R—that's to be trusted, anyway—must take place in Code (html) view).

Finding a regexp that does this accurately in all cases will be very unlikely. An external program/script that used heuristic logic may stand a better chance, but will probably be just as hard to come across (or write).