===================================================================
RCS file: /cvs/mandoc/tbl_term.c,v
retrieving revision 1.16
retrieving revision 1.19
diff -u -p -r1.16 -r1.19
--- mandoc/tbl_term.c	2011/01/10 14:40:30	1.16
+++ mandoc/tbl_term.c	2011/01/25 12:07:30	1.19
@@ -1,6 +1,7 @@
-/*	$Id: tbl_term.c,v 1.16 2011/01/10 14:40:30 kristaps Exp $ */
+/*	$Id: tbl_term.c,v 1.19 2011/01/25 12:07:30 schwarze Exp $ */
 /*
- * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -197,6 +198,8 @@ tbl_hrule(struct termp *tp, const struct tbl_span *sp)
 		width = tp->tbl.cols[hp->ident].width;
 		switch (hp->pos) {
 		case (TBL_HEAD_DATA):
+			if (hp->next)
+				width += 2;
 			tbl_char(tp, c, width);
 			break;
 		case (TBL_HEAD_DVERT):
@@ -305,6 +308,9 @@ tbl_data(struct termp *tp, const struct tbl *tbl,
 	case (TBL_CELL_NUMBER):
 		tbl_number(tp, tbl, dp, col);
 		break;
+	case (TBL_CELL_DOWN):
+		tbl_char(tp, ASCII_NBRSP, col->width);
+		break;
 	default:
 		abort();
 		/* NOTREACHED */
@@ -355,37 +361,36 @@ tbl_literal(struct termp *tp, const struct tbl_dat *dp
 		const struct roffcol *col)
 {
 	size_t		 padl, padr, ssz;
-	const char	*str;
 
 	padl = padr = 0;
 
-	str = dp->string ? dp->string : "";
+	assert(dp->string);
 
 	ssz = term_len(tp, 1);
 
 	switch (dp->layout->pos) {
 	case (TBL_CELL_LONG):
 		padl = ssz;
-		padr = col->width - term_strlen(tp, str) - ssz;
+		padr = col->width - term_strlen(tp, dp->string) - ssz;
 		break;
 	case (TBL_CELL_CENTRE):
-		padl = col->width - term_strlen(tp, str);
-		if (padl % 2)
-			padr++;
-		padl /= 2;
-		padr += padl;
+		padr = col->width - term_strlen(tp, dp->string);
+		if (3 > padr)
+			break;
+		padl = (padr - 1) / 2;
+		padr -= padl;
 		break;
 	case (TBL_CELL_RIGHT):
-		padl = col->width - term_strlen(tp, str);
+		padl = col->width - term_strlen(tp, dp->string);
 		break;
 	default:
-		padr = col->width - term_strlen(tp, str);
+		padr = col->width - term_strlen(tp, dp->string);
 		break;
 	}
 
 	tbl_char(tp, ASCII_NBRSP, padl);
-	term_word(tp, str);
-	tbl_char(tp, ASCII_NBRSP, padr);
+	term_word(tp, dp->string);
+	tbl_char(tp, ASCII_NBRSP, padr + 2);
 }
 
 static void
@@ -395,7 +400,6 @@ tbl_number(struct termp *tp, const struct tbl *tbl,
 {
 	char		*cp;
 	char		 buf[2];
-	const char	*str;
 	size_t		 sz, psz, ssz, d, padl;
 	int		 i;
 
@@ -404,19 +408,19 @@ tbl_number(struct termp *tp, const struct tbl *tbl,
 	 * and the maximum decimal; right-pad by the remaining amount.
 	 */
 
-	str = dp->string ? dp->string : "";
+	assert(dp->string);
 
-	sz = term_strlen(tp, str);
+	sz = term_strlen(tp, dp->string);
 
 	buf[0] = tbl->decimal;
 	buf[1] = '\0';
 
 	psz = term_strlen(tp, buf);
 
-	if (NULL != (cp = strrchr(str, tbl->decimal))) {
+	if (NULL != (cp = strrchr(dp->string, tbl->decimal))) {
 		buf[1] = '\0';
-		for (ssz = 0, i = 0; cp != &str[i]; i++) {
-			buf[0] = str[i];
+		for (ssz = 0, i = 0; cp != &dp->string[i]; i++) {
+			buf[0] = dp->string[i];
 			ssz += term_strlen(tp, buf);
 		}
 		d = ssz + psz;
@@ -429,7 +433,7 @@ tbl_number(struct termp *tp, const struct tbl *tbl,
 	padl = col->decimal - d;
 
 	tbl_char(tp, ASCII_NBRSP, padl);
-	term_word(tp, str);
+	term_word(tp, dp->string);
 	tbl_char(tp, ASCII_NBRSP, col->width - sz - padl);
 }