From a004fc3592145bcefafb3044f2ab458a6f18f85c Mon Sep 17 00:00:00 2001
From: Tiago Cunha <tcunha@gmx.com>
Date: Fri, 21 Aug 2009 21:10:37 +0000
Subject: [PATCH] Sync OpenBSD patchset 283:

Fix grid_expand_line so it actually works when the required size is bigger than
2 * the current size.
---
 grid.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/grid.c b/grid.c
index 23967871..3ffea84b 100644
--- a/grid.c
+++ b/grid.c
@@ -1,4 +1,4 @@
-/* $Id: grid.c,v 1.31 2009-08-21 21:09:13 tcunha Exp $ */
+/* $Id: grid.c,v 1.32 2009-08-21 21:10:37 tcunha Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -189,19 +189,22 @@ grid_scroll_line(struct grid *gd)
 
 /* Expand line to fit to cell. */
 void
-grid_expand_line(struct grid *gd, u_int py, u_int sx)
+grid_expand_line(struct grid *gd, u_int py, u_int wantx)
 {
 	struct grid_line	*gl;
-	u_int			 xx;
+	u_int			 xx, sx;
 
 	gl = &gd->linedata[py];
-	if (sx <= gl->cellsize)
+	if (wantx <= gl->cellsize)
 		return;
 
 	if (gl->cellsize > gd->sx / 2)
 		sx = gd->sx;
-	else
-		sx = 1 + gl->cellsize * 2;
+	else {
+		sx = gl->cellsize + 1;
+		while (sx < wantx)
+			sx *= 2;
+	}
 	gl->celldata = xrealloc(gl->celldata, sx, sizeof *gl->celldata);
 	for (xx = gl->cellsize; xx < sx; xx++)
 		grid_put_cell(gd, xx, py, &grid_default_cell);