diff --git a/cmd-split-window.c b/cmd-split-window.c
index f88b2f65..6b901254 100644
--- a/cmd-split-window.c
+++ b/cmd-split-window.c
@@ -36,8 +36,8 @@ enum cmd_retval	 cmd_split_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_split_window_entry = {
 	"split-window", "splitw",
-	"c:dF:l:hp:Pt:v", 0, -1,
-	"[-dhvP] [-c start-directory] [-F format] [-p percentage|-l size] "
+	"bc:dF:l:hp:Pt:v", 0, -1,
+	"[-bdhvP] [-c start-directory] [-F format] [-p percentage|-l size] "
 	CMD_TARGET_PANE_USAGE " [command]",
 	0,
 	cmd_split_window_exec
@@ -144,7 +144,8 @@ cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
 	if (*shell == '\0' || areshell(shell))
 		shell = _PATH_BSHELL;
 
-	if ((lc = layout_split_pane(wp, type, size, 0)) == NULL) {
+	lc = layout_split_pane(wp, type, size, args_has(args, 'b'));
+	if (lc == NULL) {
 		cause = xstrdup("pane too small");
 		goto error;
 	}
diff --git a/grid-view.c b/grid-view.c
index badabd56..a34c5a08 100644
--- a/grid-view.c
+++ b/grid-view.c
@@ -184,7 +184,9 @@ grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx)
 	px = grid_view_x(gd, px);
 	py = grid_view_y(gd, py);
 
-	sx = grid_view_x(gd, gd->sx);
+	sx = grid_view_x(gd, gd->linedata[py].cellsize);
+	if (sx < px + nx)
+		sx = px + nx;
 
 	if (px == sx - 1)
 		grid_clear(gd, px, py, 1, 1);
@@ -201,7 +203,9 @@ grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx)
 	px = grid_view_x(gd, px);
 	py = grid_view_y(gd, py);
 
-	sx = grid_view_x(gd, gd->sx);
+	sx = grid_view_x(gd, gd->linedata[py].cellsize);
+	if (sx < px + nx)
+		sx = px + nx;
 
 	grid_move_cells(gd, px, px + nx, py, sx - px - nx);
 	grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1);
diff --git a/resize.c b/resize.c
index 73a728fa..9ad73c81 100644
--- a/resize.c
+++ b/resize.c
@@ -50,7 +50,7 @@ recalculate_sizes(void)
 	struct window		*w;
 	struct window_pane	*wp;
 	u_int			 i, j, ssx, ssy, has, limit;
-	int			 flag, has_status, is_zoomed;
+	int			 flag, has_status, is_zoomed, forced;
 
 	RB_FOREACH(s, sessions, &sessions) {
 		has_status = options_get_number(&s->options, "status");
@@ -116,18 +116,26 @@ recalculate_sizes(void)
 		if (ssx == UINT_MAX || ssy == UINT_MAX)
 			continue;
 
+		forced = 0;
 		limit = options_get_number(&w->options, "force-width");
-		if (limit >= PANE_MINIMUM && ssx > limit)
+		if (limit >= PANE_MINIMUM && ssx > limit) {
 			ssx = limit;
+			forced |= WINDOW_FORCEWIDTH;
+		}
 		limit = options_get_number(&w->options, "force-height");
-		if (limit >= PANE_MINIMUM && ssy > limit)
+		if (limit >= PANE_MINIMUM && ssy > limit) {
 			ssy = limit;
+			forced |= WINDOW_FORCEHEIGHT;
+		}
 
 		if (w->sx == ssx && w->sy == ssy)
 			continue;
 		log_debug("window size %u,%u (was %u,%u)", ssx, ssy, w->sx,
 		    w->sy);
 
+		w->flags &= ~(WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT);
+		w->flags |= forced;
+
 		is_zoomed = w->flags & WINDOW_ZOOMED;
 		if (is_zoomed)
 			window_unzoom(w);
diff --git a/screen-redraw.c b/screen-redraw.c
index a7f713a5..ef9e539d 100644
--- a/screen-redraw.c
+++ b/screen-redraw.c
@@ -278,8 +278,37 @@ screen_redraw_draw_borders(struct client *c, int status, u_int top)
 	struct options		*oo = &c->session->options;
 	struct tty		*tty = &c->tty;
 	struct window_pane	*wp;
-	struct grid_cell	 active_gc, other_gc;
-	u_int		 	 i, j, type;
+	struct grid_cell	 active_gc, other_gc, msg_gc;
+	u_int		 	 i, j, type, msgx = 0, msgy = 0;
+	int			 small, flags;
+	char			 msg[256];
+	const char		*tmp;
+	size_t			 msglen = 0;
+
+	small = (tty->sy - status + top > w->sy) || (tty->sx > w->sx);
+	if (small) {
+		flags = w->flags & (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT);
+		if (flags == (WINDOW_FORCEWIDTH|WINDOW_FORCEHEIGHT))
+			tmp = "force-width, force-height";
+		else if (flags == WINDOW_FORCEWIDTH)
+			tmp = "force-width";
+		else if (flags == WINDOW_FORCEHEIGHT)
+			tmp = "force-height";
+		else
+			tmp = "a smaller client";
+		xsnprintf(msg, sizeof msg, "(size %ux%u from %s)",
+		    w->sx, w->sy, tmp);
+		msglen = strlen(msg);
+
+		if (tty->sy - 1 - status + top > w->sy && tty->sx >= msglen) {
+			msgx = tty->sx - msglen;
+			msgy = tty->sy - 1 - status + top;
+		} else if (tty->sx - w->sx > msglen) {
+			msgx = tty->sx - msglen;
+			msgy = tty->sy - 1 - status + top;
+		} else
+			small = 0;
+	}
 
 	style_apply(&other_gc, oo, "pane-border-style");
 	style_apply(&active_gc, oo, "pane-active-border-style");
@@ -290,6 +319,9 @@ screen_redraw_draw_borders(struct client *c, int status, u_int top)
 			type = screen_redraw_check_cell(c, i, j, &wp);
 			if (type == CELL_INSIDE)
 				continue;
+			if (type == CELL_OUTSIDE &&
+			    small && i > msgx && j == msgy)
+				continue;
 			if (screen_redraw_check_active(i, j, type, w, wp))
 				tty_attributes(tty, &active_gc);
 			else
@@ -298,6 +330,13 @@ screen_redraw_draw_borders(struct client *c, int status, u_int top)
 			tty_putc(tty, CELL_BORDERS[type]);
 		}
 	}
+
+	if (small) {
+		memcpy(&msg_gc, &grid_default_cell, sizeof msg_gc);
+		tty_attributes(tty, &msg_gc);
+		tty_cursor(tty, msgx, msgy);
+		tty_puts(tty, msg);
+	}
 }
 
 /* Draw the panes. */
diff --git a/tmux.1 b/tmux.1
index fb708ded..4a1eb54c 100644
--- a/tmux.1
+++ b/tmux.1
@@ -1761,7 +1761,7 @@ is given and the selected window is already the current window,
 the command behaves like
 .Ic last-window .
 .It Xo Ic split-window
-.Op Fl dhvP
+.Op Fl bdhvP
 .Op Fl c Ar start-directory
 .Oo Fl l
 .Ar size |
@@ -1785,6 +1785,10 @@ and
 .Fl p
 options specify the size of the new pane in lines (for vertical split) or in
 cells (for horizontal split), or as a percentage, respectively.
+The
+.Fl b
+option causes the new pane to be created to the left of or above
+.Ar target-pane .
 All other options have the same meaning as for the
 .Ic new-window
 command.
diff --git a/tmux.h b/tmux.h
index 57077a65..7c0a7b52 100644
--- a/tmux.h
+++ b/tmux.h
@@ -944,7 +944,9 @@ struct window {
 #define WINDOW_ACTIVITY 0x2
 #define WINDOW_REDRAW 0x4
 #define WINDOW_SILENCE 0x8
-#define WINDOW_ZOOMED 0x10
+#define WINDOW_ZOOMED 0x1000
+#define WINDOW_FORCEWIDTH 0x2000
+#define WINDOW_FORCEHEIGHT 0x4000
 #define WINDOW_ALERTFLAGS (WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_SILENCE)
 
 	struct options	 options;