===================================================================
RCS file: /cvs/mandoc/out.c,v
retrieving revision 1.67
retrieving revision 1.70
diff -u -p -r1.67 -r1.70
--- mandoc/out.c	2017/06/12 22:05:57	1.67
+++ mandoc/out.c	2017/06/27 18:25:02	1.70
@@ -1,4 +1,4 @@
-/*	$Id: out.c,v 1.67 2017/06/12 22:05:57 schwarze Exp $ */
+/*	$Id: out.c,v 1.70 2017/06/27 18:25:02 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -20,6 +20,7 @@
 #include <sys/types.h>
 
 #include <assert.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
@@ -85,10 +86,8 @@ a2roffsu(const char *src, struct roffsu *dst, enum rof
 	case 'v':
 		dst->unit = SCALE_VS;
 		break;
-	case '\0':
-		endptr--;
-		/* FALLTHROUGH */
 	default:
+		endptr--;
 		if (SCALE_MAX == def)
 			return NULL;
 		dst->unit = def;
@@ -142,8 +141,8 @@ tblcalc(struct rofftbl *tbl, const struct tbl_span *sp
 			if (1 < spans)
 				continue;
 			icol = dp->layout->col;
-			if (maxcol < icol)
-				maxcol = icol;
+			while (maxcol < icol)
+				tbl->cols[++maxcol].spacing = SIZE_MAX;
 			col = tbl->cols + icol;
 			col->flags |= dp->layout->flags;
 			if (dp->layout->flags & TBL_CELL_WIGN)
@@ -156,10 +155,15 @@ tblcalc(struct rofftbl *tbl, const struct tbl_span *sp
 				    (*tbl->sulen)(&su, tbl->arg);
 			if (col->width < dp->layout->width)
 				col->width = dp->layout->width;
+			if (dp->layout->spacing != SIZE_MAX &&
+			    (col->spacing == SIZE_MAX ||
+			     col->spacing < dp->layout->spacing))
+				col->spacing = dp->layout->spacing;
 			tblcalc_data(tbl, col, opts, dp,
 			    dp->block == 0 ? 0 :
 			    dp->layout->width ? dp->layout->width :
-			    rmargin ? rmargin / (sp->opts->cols + 1) : 0);
+			    rmargin ? (rmargin + sp->opts->cols / 2)
+			    / (sp->opts->cols + 1) : 0);
 		}
 	}
 
@@ -173,6 +177,8 @@ tblcalc(struct rofftbl *tbl, const struct tbl_span *sp
 	ewidth = xwidth = 0;
 	for (icol = 0; icol <= maxcol; icol++) {
 		col = tbl->cols + icol;
+		if (col->spacing == SIZE_MAX || icol == maxcol)
+			col->spacing = 3;
 		if (col->flags & TBL_CELL_EQUAL) {
 			necol++;
 			if (ewidth < col->width)