I'd like to export a .org file which includes all headlines without any tags AND headlines with selected tags. Headlines with tags which do not match the specified list are skipped.

My testing so far reveals that setting org-export-select-tags only selects headlines which strictly match the specified tag list. I have tried including nil, an empty string, and an empty string with a space in the specified tag list without any luck.

Does anyone know if this is currently possible?

Thanks,
-Rehan