Believed benefit here is that though individual operators often come in polarized pairs, sometimes it's more natural to express "not all these things" instead of "factoring not" throughout.
This is possible for every backend except for the rsql variation. So far I haven't added anything that isn't able to be implemented in every backend to core, so I think I'll continue that for now.
Believed benefit here is that though individual operators often come in polarized pairs, sometimes it's more natural to express "not all these things" instead of "factoring not" throughout.