- saw &WARN at ./sub/dir/Dir.sd.mk:15
-subdirmk: warning (unknown-warning): ./sub/dir/Dir.sd.mk:3: attempt to suppress unknown warning(s) `some-unknown-warning'
+ saw &WARN at ./sub/dir/Dir.sd.mk:18
+ saw &WARN at ./sub/dir/Dir.sd.mk:27
+ expectedly saw &WARN at ./sub/dir/Dir.sd.mk:21
+subdirmk: warning (unknown-warning): ./sub/dir/Dir.sd.mk:6: attempt to suppress unknown warning(s) `some-unknown-warning'