Exclude Dir Regex / Include Dirs Filter

[github-u-s-e-r]

The "Exclude Dirs" filter is invaluable but I also find myself wanting to to the opposite:

Search only folders of  a certain name within a directory tree.

I should be able to use Exclude dirs with a regex for this but I failed to do so. Wanting to only see matches in paths that contain "foo" I used: ^((?!foo).)*$ or ^((?!.foo).)$ Both regex work in the "Test regex" feature for regular text matching but not for Exclude dirs. Maybe I got the syntax wrong?

Failing that I would like a negate checkbox for Exclude Dirs which turns Exclude filter into an Include filter ;-)

[Protuhj]

A check box to to be able to be able to switch the "Exclude" behavior to "Include" behavior would be (I think) one of the easiest ways to do this.