===================================================================
RCS file: /cvs/mandoc/regress/mdoc/Er/noarg.out_lint,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -p -r1.4 -r1.5
--- mandoc/regress/mdoc/Er/noarg.out_lint	2017/06/17 22:44:03	1.4
+++ mandoc/regress/mdoc/Er/noarg.out_lint	2017/06/25 12:52:28	1.5
@@ -1,4 +1,5 @@
 mandoc: noarg.in:12:2: WARNING: skipping empty macro: Er
-mandoc: noarg.in:1:5: STYLE: Mdocdate missing: Dd June
+mandoc: noarg.in:3:5: BASE: operating system explicitly specified: Os OpenBSD (OpenBSD)
+mandoc: noarg.in:1:5: BASE: Mdocdate missing: Dd June (OpenBSD)
 mandoc: noarg.in:10:8: STYLE: no blank before trailing delimiter: Er EIO.
-mandoc: noarg.in: STYLE: RCS id missing
+mandoc: noarg.in: BASE: RCS id missing: (OpenBSD)