How to choose no demographic in the search?

[VorChar]

Currently the demographic selector has 4 options but some mangas have no demographic and only seem appear if all demographic are selected. Is there a way to see mangas with only no demographic or is the only way to see these with all demographics on? Tried removing all demographic selections but this seems to just search with them all on

 

[kaza_hesto]

I don't think it's possible. You can see the demographic parameter is a comma separated list of numbers in the url when you search, and briefly experimenting it appears to treat anything which isn't a positive integer greater than 0 as searching all demographics. Interestingly it doesn't seem to do other validation so you can input invalid demographics > 4 and it still searches, though returns no results.
It might count as a bug that searching no demographics means to include all of them, but staff seem pretty reluctant to change search code much since they're rewriting it so idk if they'll fix or if it's even feasible to do so.