It is not possible to unset { -brand-short-name } as the default client within { -brand-short-name }. To make another application the default you must use its 'Set as default' dialog.
Njejo móžno, w { -brand-short-name } póstajiś, až { -brand-short-name } wěcej njama se ako standardny program wužywaś. Aby wy druge nałoženje k standardnemu programoju cynił, musyśo dialog 'Ako standard wužywaś' togo nałoženja wužywaś.