diff --git a/arguments.c b/arguments.c
index f4da6458a..fdf43752f 100644
--- a/arguments.c
+++ b/arguments.c
@@ -998,7 +998,7 @@ args_string_percentage(const char *value, long long minval, long long maxval,
 		copy = xstrdup(value);
 		copy[valuelen - 1] = '\0';
 
-		ll = strtonum(copy, 0, 100, &errstr);
+		ll = strtonum(copy, 0, 1000, &errstr);
 		free(copy);
 		if (errstr != NULL) {
 			*cause = xstrdup(errstr);
@@ -1066,7 +1066,7 @@ args_string_percentage_and_expand(const char *value, long long minval,
 		copy[valuelen - 1] = '\0';
 
 		f = format_single_from_target(item, copy);
-		ll = strtonum(f, 0, 100, &errstr);
+		ll = strtonum(f, 0, 1000, &errstr);
 		free(f);
 		free(copy);
 		if (errstr != NULL) {
diff --git a/cmd-resize-pane.c b/cmd-resize-pane.c
index bc91ab2bc..8e548dc0e 100644
--- a/cmd-resize-pane.c
+++ b/cmd-resize-pane.c
@@ -94,7 +94,7 @@ cmd_resize_pane_exec(struct cmd *self, struct cmdq_item *item)
 	server_unzoom_window(w);
 
 	if (args_has(args, 'x')) {
-		x = args_percentage(args, 'x', 0, INT_MAX, w->sx, &cause);
+		x = args_percentage(args, 'x', 0, PANE_MAXIMUM, w->sx, &cause);
 		if (cause != NULL) {
 			cmdq_error(item, "width %s", cause);
 			free(cause);
@@ -112,7 +112,7 @@ cmd_resize_pane_exec(struct cmd *self, struct cmdq_item *item)
 			layout_resize_pane_to(wp, LAYOUT_LEFTRIGHT, x);
 	}
 	if (args_has(args, 'y')) {
-		y = args_percentage(args, 'y', 0, INT_MAX, w->sy, &cause);
+		y = args_percentage(args, 'y', 0, PANE_MAXIMUM, w->sy, &cause);
 		if (cause != NULL) {
 			cmdq_error(item, "height %s", cause);
 			free(cause);
diff --git a/cmd-split-window.c b/cmd-split-window.c
index bbce4dbf8..cdc42cefe 100644
--- a/cmd-split-window.c
+++ b/cmd-split-window.c
@@ -88,7 +88,7 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 	int			 input, empty, is_floating, flags = 0;
 	const char		*template, *style, *value;
 	char			*cause = NULL, *cp, *title;
-	struct options_entry	*oe;
+	const struct options_table_entry *oe;
 	struct args_value	*av;
 	enum pane_lines		 lines;
 	u_int			 count = args_count(args);
@@ -118,8 +118,20 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 	if (empty)
 		flags |= SPAWN_EMPTY;
 
+	if ((value = args_get(args, 'B')) == NULL)
+		lines = window_get_pane_lines(w);
+	else {
+		oe = options_search("pane-border-lines");
+		lines = options_find_choice(oe, value, &cause);
+		if (cause != NULL) {
+			cmdq_error(item, "pane-border-lines %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
+		}
+	}
+
 	if (is_floating)
-		lc = layout_get_floating_cell(item, args, w, wp, &cause);
+		lc = layout_get_floating_cell(item, args, lines, w, wp, &cause);
 	else
 		lc = layout_get_tiled_cell(item, args, w, wp, flags, &cause);
 	if (cause != NULL) {
@@ -156,10 +168,7 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 	if ((new_wp = spawn_pane(&sc, &cause)) == NULL) {
 		cmdq_error(item, "create pane failed: %s", cause);
 		free(cause);
-		if (sc.argv != NULL)
-			cmd_free_argv(sc.argc, sc.argv);
-		environ_free(sc.environ);
-		return (CMD_RETURN_ERROR);
+		goto fail;
 	}
 
 	style = args_get(args, 's');
@@ -167,7 +176,7 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 		if (options_set_string(new_wp->options, "window-style", 0,
 		    "%s", style) == NULL) {
 			cmdq_error(item, "bad style: %s", style);
-			return (CMD_RETURN_ERROR);
+			goto fail;
 		}
 		options_set_string(new_wp->options, "window-active-style", 0,
 		    "%s", style);
@@ -179,7 +188,7 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 		if (options_set_string(new_wp->options,
 		    "pane-active-border-style", 0, "%s", style) == NULL) {
 			cmdq_error(item, "bad active border style: %s", style);
-			return (CMD_RETURN_ERROR);
+			goto fail;
 		}
 	}
 	style = args_get(args, 'R');
@@ -188,22 +197,11 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 		    "%s", style) == NULL) {
 			cmdq_error(item, "bad inactive border style: %s",
 			    style);
-			return (CMD_RETURN_ERROR);
+			goto fail;
 		}
 	}
-	value = args_get(args, 'B');
-	if (value != NULL) {
-		oe = options_get(new_wp->options, "pane-border-lines");
-		lines = options_find_choice(options_table_entry(oe), value,
-		    &cause);
-		if (cause != NULL) {
-			cmdq_error(item, "pane-border-lines %s", cause);
-			free(cause);
-			return (CMD_RETURN_ERROR);
-		}
-		options_set_number(new_wp->options, "pane-border-lines",
-		    lines);
-	}
+	if (args_has(args, 'B'))
+		options_set_number(new_wp->options, "pane-border-lines", lines);
 	if (args_has(args, 'k') || args_has(args, 'm')) {
 		options_set_number(new_wp->options, "remain-on-exit", 3);
 		if (args_has(args, 'm')) {
@@ -228,10 +226,7 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 			window_remove_pane(wp->window, new_wp);
 			cmdq_error(item, "%s", cause);
 			free(cause);
-			if (sc.argv != NULL)
-				cmd_free_argv(sc.argc, sc.argv);
-			environ_free(sc.environ);
-			return (CMD_RETURN_ERROR);
+			goto fail;
 		case 1:
 			input = 0;
 			break;
@@ -273,4 +268,13 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 		return (CMD_RETURN_WAIT);
 	}
 	return (CMD_RETURN_NORMAL);
+
+fail:
+	if (sc.argv != NULL)
+		cmd_free_argv(sc.argc, sc.argv);
+	environ_free(sc.environ);
+	layout_destroy_cell(w, lc, &w->layout_root);
+
+	return (CMD_RETURN_ERROR);
+
 }
diff --git a/layout.c b/layout.c
index 1aaaff799..de6f10cde 100644
--- a/layout.c
+++ b/layout.c
@@ -20,6 +20,7 @@
 #include <sys/types.h>
 
 #include <stdlib.h>
+#include <string.h>
 
 #include "tmux.h"
 
@@ -1563,7 +1564,8 @@ layout_get_tiled_cell(struct cmdq_item *item, struct args *args,
 /* Get a new floating cell. */
 struct layout_cell *
 layout_get_floating_cell(struct cmdq_item *item, struct args *args,
-    struct window *w, struct window_pane *wp, char **cause)
+    enum pane_lines lines, struct window *w, struct window_pane *wp,
+    char **cause)
 {
 	struct layout_cell	*lcnew;
 	int			 sx = w->sx / 2, sy = w->sy / 4;
@@ -1571,22 +1573,26 @@ layout_get_floating_cell(struct cmdq_item *item, struct args *args,
 	char			*error;
 
 	if (args_has(args, 'x')) {
-		sx = args_percentage_and_expand(args, 'x', 0, w->sx - 1, w->sx,
-		    item, &error);
+		sx = args_percentage_and_expand(args, 'x', 0, PANE_MAXIMUM,
+		    w->sx, item, &error);
 		if (error != NULL) {
 			xasprintf(cause, "position %s", error);
 			free(error);
 			return (NULL);
 		}
+		if (lines != PANE_LINES_NONE)
+			sx -= 2;
 	}
 	if (args_has(args, 'y')) {
-		sy = args_percentage_and_expand(args, 'y', 0, w->sy - 1, w->sy,
-		    item, &error);
+		sy = args_percentage_and_expand(args, 'y', 0, PANE_MAXIMUM,
+		    w->sy, item, &error);
 		if (error != NULL) {
 			xasprintf(cause, "position %s", error);
 			free(error);
 			return (NULL);
 		}
+		if (lines != PANE_LINES_NONE)
+			sy -= 2;
 	}
 	if (args_has(args, 'X')) {
 		ox = args_percentage_and_expand(args, 'X', -sx, w->sx,
@@ -1616,7 +1622,9 @@ layout_get_floating_cell(struct cmdq_item *item, struct args *args,
 				ox = 4;
 		}
 		w->last_new_pane_x = ox;
-	}
+	} else
+		if (lines != PANE_LINES_NONE)
+			ox += 1;
 	if (oy == INT_MAX) {
 		if (w->last_new_pane_y == 0)
 			oy = 2;
@@ -1626,7 +1634,9 @@ layout_get_floating_cell(struct cmdq_item *item, struct args *args,
 				oy = 2;
 		}
 		w->last_new_pane_y = oy;
-	}
+	} else
+		if (lines != PANE_LINES_NONE)
+			oy += 1;
 
 	if (sx < PANE_MINIMUM || sx > PANE_MAXIMUM) {
 		*cause = xstrdup("invalid width");
diff --git a/options.c b/options.c
index a9ef2f945..a4081a8d2 100644
--- a/options.c
+++ b/options.c
@@ -662,6 +662,18 @@ options_parse_get(struct options *oo, const char *s, int *idx, int only)
 	return (o);
 }
 
+const struct options_table_entry *
+options_search(const char *name)
+{
+	const struct options_table_entry	*oe;
+
+	for (oe = options_table; oe->name != NULL; oe++) {
+		if (strcmp(oe->name, name) == 0)
+			return (oe);
+	}
+	return (NULL);
+}
+
 char *
 options_match(const char *s, int *idx, int *ambiguous)
 {
diff --git a/tmux.h b/tmux.h
index a453aef76..8d9a1105e 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2558,6 +2558,7 @@ char		*options_to_string(struct options_entry *, int, int);
 char		*options_parse(const char *, int *);
 struct options_entry *options_parse_get(struct options *, const char *, int *,
 		     int);
+const struct options_table_entry *options_search(const char *);
 char		*options_match(const char *, int *, int *);
 struct options_entry *options_match_get(struct options *, const char *, int *,
 		     int, int *);
@@ -3472,6 +3473,7 @@ int		 window_get_bg_client(struct window_pane *);
 enum client_theme window_pane_get_theme(struct window_pane *);
 void		 window_pane_send_theme_update(struct window_pane *);
 enum pane_lines	 window_pane_get_pane_lines(struct window_pane *);
+enum pane_lines	 window_get_pane_lines(struct window *);
 int		 window_get_pane_status(struct window *);
 int		 window_pane_get_pane_status(struct window_pane *);
 struct style_range *window_pane_status_get_range(struct window_pane *, u_int,
@@ -3535,7 +3537,8 @@ void		 layout_spread_out(struct window_pane *);
 struct layout_cell *layout_get_tiled_cell(struct cmdq_item *, struct args *,
 		     struct window *, struct window_pane *, int, char **);
 struct layout_cell *layout_get_floating_cell(struct cmdq_item *, struct args *,
-		     struct window *, struct window_pane *, char **);
+		     enum pane_lines, struct window *, struct window_pane *,
+		     char **);
 int		 layout_remove_tile(struct window *, struct layout_cell *);
 
 /* layout-custom.c */
diff --git a/window.c b/window.c
index 8862e65da..fe4047e96 100644
--- a/window.c
+++ b/window.c
@@ -2177,6 +2177,15 @@ window_pane_get_pane_lines(struct window_pane *wp)
 	return (options_get_number(oo, "pane-border-lines"));
 }
 
+enum pane_lines
+window_get_pane_lines(struct window *w)
+{
+	struct options	*oo;
+
+	oo = w->options;
+	return (options_get_number(oo, "pane-border-lines"));
+}
+
 int
 window_get_pane_status(struct window *w)
 {