With the latest trunk i still see some wired behaviour:
1) Open the Thread search tab
2) press show/hide dir items
3) now if you click trough the search options (search in workspace, search in open files ecc.) The file mask is only enabled if you search in directory. I do not know it this is wanted, or if the mask should also apply for workspace search ecc.. Anyway:
4) Search in workspace, execute the search
5) Search successful, but the file mask now seems to be active (not greyed out) but you can not enter anything. It only appears enabled, but is disabled...
A other thing:
If you open the thread search options and modify the "Search in files" again, like search in workspace, search in open files ecc the mask control is never deactivated... So it is inconsistent with the tab behaviour...
[edit] windows, wxWidgets 3.1.4