===================================================================
RCS file: /cvs/mandoc/tbl_data.c,v
retrieving revision 1.9
retrieving revision 1.10
diff -u -p -r1.9 -r1.10
--- mandoc/tbl_data.c	2011/01/02 12:04:23	1.9
+++ mandoc/tbl_data.c	2011/01/04 12:06:21	1.10
@@ -1,4 +1,4 @@
-/*	$Id: tbl_data.c,v 1.9 2011/01/02 12:04:23 kristaps Exp $ */
+/*	$Id: tbl_data.c,v 1.10 2011/01/04 12:06:21 kristaps Exp $ */
 /*
  * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -82,6 +82,11 @@ data(struct tbl_node *tbl, struct tbl_span *dp, 
 		dat->pos = TBL_DATA_NDHORIZ;
 	else
 		dat->pos = TBL_DATA_DATA;
+
+	if (TBL_CELL_HORIZ == dat->layout->pos ||
+			TBL_CELL_DHORIZ == dat->layout->pos)
+		if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
+			TBL_MSG(tbl, MANDOCERR_TBLIGNDATA, ln, sv);
 }
 
 int