items are not listed in any particular order (except that recently-added items
may tend towards the top). Not all of these represent user-visible changes.
+* Generalize --html-extension to something like --mime-extension and have it
+ look at mime.types/mimecap file for preferred extension. Non-HTML files with
+ filenames changed this way would be re-downloaded each time despite -N unless
+ .orig files were saved for them. Since .orig would contain the same data as
+ non-.orig, the latter could be just a link to the former. Another possibility
+ would be to implement a per-directory database called something like
+ .wget_url_mapping containing URLs and their corresponding filenames.
+
* When spanning hosts, there's no way to say that you are only interested in
files in a certain directory on _one_ of the hosts (-I and -X apply to all).
Perhaps -I and -X should take an optional hostname before the directory?