Make advanced search selectable
There appears to be two kind of searches in Padre. (Not counting Find in Files.) Most commonly, a red x appears in the lower left corner and a bare search box appears at the bottom. However, sometimes, when Padre feels like it, a slightly more advanced search box appears. (I believe it even contains a case sensitivity checkbox.) However, there is no apparent way of telling Padre that you want to use the slightly more advanced search box.