Alt+F7 Search: exclude dirs also in "search in"

[StatusQuo]

(I'm forwarding a suggestion from a thread in the german forum:)

User Geigolino suggests to implement the exclusion of directories (*.* | excludedir\) to search in
in the input box "Search in", which would be more logical than in "Search for" (C:\;D:\;E:\;F:\ | excludedir\).

I'd like to add: If the function in "Search for" gets extended,
the existing possibilities in "Search in" should not be reduced, to keep the current syntax valid.