It could sometimes be useful to be able to use regex in virtual tags.
There are some (but extremely few) references on the wiki and the forum that there should already be some support for it, but I can't find any useful info about it.
It looks like it might be limited to only check if a regex 'is true'? But I also can't find out how that would work.
Does anybody have some more info on this, or perhaps can give some links to more info and/or examples?