regress/roff/esc/ignore.out_lint

   1 mandoc: ignore.in:14:60: WARNING: invalid escape sequence: \s-
   2 mandoc: ignore.in:3:5: BASE: operating system explicitly specified: Os OpenBSD (OpenBSD)
   3 mandoc: ignore.in:1:5: BASE: Mdocdate missing: Dd January (OpenBSD)
   4 mandoc: ignore.in: BASE: RCS id missing: (OpenBSD)