===================================================================
RCS file: /cvs/mandoc/regress/mdoc/Os/late.out_lint,v
retrieving revision 1.1
retrieving revision 1.3
diff -u -p -r1.1 -r1.3
--- mandoc/regress/mdoc/Os/late.out_lint	2017/02/08 03:03:03	1.1
+++ mandoc/regress/mdoc/Os/late.out_lint	2017/06/25 12:53:08	1.3
@@ -1 +1,3 @@
 mandoc: late.in:8:2: WARNING: late prologue macro: Os
+mandoc: late.in:8:5: BASE: operating system explicitly specified: Os OpenBSD (OpenBSD)
+mandoc: late.in: BASE: RCS id missing: (OpenBSD)