===================================================================
RCS file: /cvs/mandoc/out.c,v
retrieving revision 1.51
retrieving revision 1.52
diff -u -p -r1.51 -r1.52
--- mandoc/out.c	2014/08/12 19:28:16	1.51
+++ mandoc/out.c	2014/10/14 02:16:06	1.52
@@ -1,7 +1,7 @@
-/*	$Id: out.c,v 1.51 2014/08/12 19:28:16 schwarze Exp $ */
+/*	$Id: out.c,v 1.52 2014/10/14 02:16:06 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2011, 2014 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
@@ -139,11 +139,14 @@ a2roffsu(const char *src, struct roffsu *dst, enum rof
  * used for the actual width calculations.
  */
 void
-tblcalc(struct rofftbl *tbl, const struct tbl_span *sp)
+tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
+	size_t totalwidth)
 {
 	const struct tbl_dat	*dp;
 	struct roffcol		*col;
+	size_t			 ewidth, xwidth;
 	int			 spans;
+	int			 icol, maxcol, necol, nxcol;
 
 	/*
 	 * Allocate the master column specifiers.  These will hold the
@@ -155,7 +158,7 @@ tblcalc(struct rofftbl *tbl, const struct tbl_span *sp
 	tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
 	    sizeof(struct roffcol));
 
-	for ( ; sp; sp = sp->next) {
+	for (maxcol = 0; sp; sp = sp->next) {
 		if (TBL_SPAN_DATA != sp->pos)
 			continue;
 		spans = 1;
@@ -170,9 +173,70 @@ tblcalc(struct rofftbl *tbl, const struct tbl_span *sp
 			spans = dp->spans;
 			if (1 < spans)
 				continue;
-			assert(dp->layout);
-			col = &tbl->cols[dp->layout->head->ident];
+			icol = dp->layout->head->ident;
+			if (maxcol < icol)
+				maxcol = icol;
+			col = tbl->cols + icol;
+			col->flags |= dp->layout->flags;
+			if (dp->layout->flags & TBL_CELL_WIGN)
+				continue;
 			tblcalc_data(tbl, col, sp->opts, dp);
+		}
+	}
+
+	/*
+	 * Count columns to equalize and columns to maximize.
+	 * Find maximum width of the columns to equalize.
+	 * Find total width of the columns *not* to maximize.
+	 */
+
+	necol = nxcol = 0;
+	ewidth = xwidth = 0;
+	for (icol = 0; icol <= maxcol; icol++) {
+		col = tbl->cols + icol;
+		if (col->flags & TBL_CELL_EQUAL) {
+			necol++;
+			if (ewidth < col->width)
+				ewidth = col->width;
+		}
+		if (col->flags & TBL_CELL_WMAX)
+			nxcol++;
+		else
+			xwidth += col->width;
+	}
+
+	/*
+	 * Equalize columns, if requested for any of them.
+	 * Update total width of the columns not to maximize.
+	 */
+
+	if (necol) {
+		for (icol = 0; icol <= maxcol; icol++) {
+			col = tbl->cols + icol;
+			if ( ! (col->flags & TBL_CELL_EQUAL))
+				continue;
+			if (col->width == ewidth)
+				continue;
+			if (nxcol && totalwidth)
+				xwidth += ewidth - col->width;
+			col->width = ewidth;
+		}
+	}
+
+	/*
+	 * If there are any columns to maximize, find the total
+	 * available width, deducting 3n margins between columns.
+	 * Distribute the available width evenly.
+	 */
+
+	if (nxcol && totalwidth) {
+		xwidth = totalwidth - 3*maxcol - xwidth;
+		for (icol = 0; icol <= maxcol; icol++) {
+			col = tbl->cols + icol;
+			if ( ! (col->flags & TBL_CELL_WMAX))
+				continue;
+			col->width = xwidth / nxcol--;
+			xwidth -= col->width;
 		}
 	}
 }