===================================================================
RCS file: /cvs/mandoc/mandoc.1,v
retrieving revision 1.252
retrieving revision 1.253
diff -u -p -r1.252 -r1.253
--- mandoc/mandoc.1	2021/07/04 15:38:26	1.252
+++ mandoc/mandoc.1	2021/08/14 13:53:08	1.253
@@ -1,4 +1,4 @@
-.\" $OpenBSD: mandoc.1,v 1.252 2021/07/04 15:38:26 schwarze Exp $
+.\" $OpenBSD: mandoc.1,v 1.253 2021/08/14 13:53:08 schwarze Exp $
 .\"
 .\" Copyright (c) 2012, 2014-2021 Ingo Schwarze <schwarze@openbsd.org>
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: July 4 2021 $
+.Dd $Mdocdate: August 14 2021 $
 .Dt MANDOC 1
 .Os
 .Sh NAME
@@ -2371,6 +2371,14 @@ The
 .Fl O Cm tag
 option was specified but the tag was not found in any of the displayed
 manual pages.
+.It Sy "\-Tmarkdown unsupported for man(7) input"
+.Pq man
+The
+.Fl T Cm markdown
+option was specified but an input file uses the
+.Xr man 7
+language.
+No output is produced for that input file.
 .El
 .Sh SEE ALSO
 .Xr apropos 1 ,