===================================================================
RCS file: /cvs/mandoc/gmdiff,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -p -r1.8 -r1.9
--- mandoc/gmdiff	2017/07/04 21:01:17	1.8
+++ mandoc/gmdiff	2017/08/23 20:03:17	1.9
@@ -34,7 +34,7 @@ elif [ "X$1" = "X-u" ]; then
   ROFF="groff -ket -ww -Tutf8 -P -c"
   MOPT="-Werror -Tutf8 $MOPT"
 else
-  ROFF="groff -et -ww -Tascii -P -c"
+  ROFF="groff -et -ww -mtty-char -Tascii -P -c"
   MOPT="-Werror -Tascii $MOPT"
 fi