When we're at it: It would be nice to have a small regression test for
this, too. I've recently re-factored the sql generation (for
implementing filter_iter) and was unsure if I had broken some of the new
features.

If you can give me a search-URL that uses (if possible *all*) of the new
search features I'll volunteer to put this into (one or several) tests.

original issue2550648 (lowercase so that this generates a link :-)