mandoc: invalid.in:9:2: WARNING: skipping empty request: define mandoc: invalid.in:15:2: WARNING: skipping empty request: define bruch mandoc: invalid.in:21:2: WARNING: skipping empty request: undef mandoc: invalid.in:27:2: WARNING: skipping empty request: tdefine mandoc: invalid.in:33:2: WARNING: skipping empty request: tdefine