Add a couple of extra option types, and implement show-options command.

14 files changed, 310 insertions, 59 deletions

diff --git a/CHANGES b/CHANGES
index 27386400..d69986f9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+15 June 2008
+
+* show-options command to show one or all options.
+
 14 June 2008
 
 * New window options: force-width and force-height. This will force a window
@@ -472,4 +476,4 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.119 2008-06-14 16:47:20 nicm Exp $
+$Id: CHANGES,v 1.120 2008-06-15 08:01:54 nicm Exp $
diff --git a/GNUmakefile b/GNUmakefile
index 4cad2d5a..1373e7db 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -1,4 +1,4 @@
-# $Id: GNUmakefile,v 1.17 2008-06-06 17:20:15 nicm Exp $
+# $Id: GNUmakefile,v 1.18 2008-06-15 08:01:54 nicm Exp $
 
 .PHONY: clean
 
@@ -24,7 +24,7 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       cmd-swap-window.c cmd-rename-session.c cmd-kill-session.c \
       cmd-switch-client.c cmd-has-session.c cmd-scroll-mode.c cmd-copy-mode.c \
       cmd-paste-buffer.c cmd-new-session.c cmd-start-server.c \
-      cmd-kill-server.c cmd-set-window-option.c \
+      cmd-kill-server.c cmd-set-window-option.c cmd-show-options.c \
       window-scroll.c window-more.c window-copy.c options.c \
       tty.c tty-keys.c tty-write.c screen-write.c screen-redraw.c
 
diff --git a/Makefile b/Makefile
index 24cd3e7b..a8c7eec7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.59 2008-06-05 21:25:00 nicm Exp $
+# $Id: Makefile,v 1.60 2008-06-15 08:01:54 nicm Exp $
 
 .SUFFIXES: .c .o .y .h
 .PHONY: clean update-index.html upload-index.html
@@ -28,7 +28,7 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       cmd-swap-window.c cmd-rename-session.c cmd-kill-session.c \
       cmd-switch-client.c cmd-has-session.c cmd-scroll-mode.c cmd-copy-mode.c \
       cmd-paste-buffer.c cmd-new-session.c cmd-start-server.c \
-      cmd-kill-server.c cmd-set-window-option.c \
+      cmd-kill-server.c cmd-set-window-option.c cmd-show-options.c \
       window-scroll.c window-more.c window-copy.c options.c \
       tty.c tty-keys.c tty-write.c screen-write.c screen-redraw.c
 
diff --git a/TODO b/TODO
index fd2e4863..cfa96c56 100644
--- a/TODO
+++ b/TODO
@@ -70,12 +70,13 @@
 -- For 0.3 --------------------------------------------------------------------
 - clear EOL etc CANNOT rely on term using the current colour/attr and probably
   should not emulate it doing so
-- show-options
 - key binding bug: random changes?
 - test and fix wsvt25
 - activity/bell should be per-window not per-link? what if it is cur win in
   session not being watched?
+- show-window-options
 - man page:
+      show-options
       set-window-option
       explanation of -t format
       config file
diff --git a/cmd-send-prefix.c b/cmd-send-prefix.c
index b9c236a6..8e010b04 100644
--- a/cmd-send-prefix.c
+++ b/cmd-send-prefix.c
@@ -1,4 +1,4 @@
-/* $Id: cmd-send-prefix.c,v 1.14 2008-06-05 21:25:00 nicm Exp $ */
+/* $Id: cmd-send-prefix.c,v 1.15 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -49,7 +49,7 @@ cmd_send_prefix_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if ((wl = cmd_find_window(ctx, data->target, &s)) == NULL)
 		return;
 
-	window_key(wl->window, options_get_number(&s->options, "prefix-key"));
+	window_key(wl->window, options_get_key(&s->options, "prefix-key"));
 
 	if (ctx->cmdclient != NULL)
 		server_write_client(ctx->cmdclient, MSG_EXIT, NULL, 0);
diff --git a/cmd-set-option.c b/cmd-set-option.c
index f6752223..8b6da0d4 100644
--- a/cmd-set-option.c
+++ b/cmd-set-option.c
@@ -1,4 +1,4 @@
-/* $Id: cmd-set-option.c,v 1.26 2008-06-07 06:13:21 nicm Exp $ */
+/* $Id: cmd-set-option.c,v 1.27 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -148,7 +148,7 @@ cmd_set_option_exec(struct cmd *self, unused struct cmd_ctx *ctx)
 			ctx->error(ctx, "unknown key: %s", data->value);
 			return;
 		}
-		options_set_number(oo, "prefix-key", key);
+		options_set_key(oo, "prefix-key", key);
 	} else if (strcmp(data->option, "status") == 0) {
 		if (bool == -1) {
 			ctx->error(ctx, "bad value: %s", data->value);
@@ -169,10 +169,10 @@ cmd_set_option_exec(struct cmd *self, unused struct cmd_ctx *ctx)
 			return;
 		}
 
-		colour = options_get_number(oo, "status-colour");
+		colour = options_get_colours(oo, "status-colour");
 		colour &= 0x0f;
 		colour |= number << 4;
-		options_set_number(oo, "status-colour", colour);
+		options_set_colours(oo, "status-colour", colour);
 
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 			c = ARRAY_ITEM(&clients, i);
@@ -190,10 +190,10 @@ cmd_set_option_exec(struct cmd *self, unused struct cmd_ctx *ctx)
 			return;
 		}
 
-		colour = options_get_number(oo, "status-colour");
+		colour = options_get_colours(oo, "status-colour");
 		colour &= 0xf0;
 		colour |= number;
-		options_set_number(oo, "status-colour", colour);
+		options_set_colours(oo, "status-colour", colour);
 
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 			c = ARRAY_ITEM(&clients, i);
diff --git a/cmd-show-options.c b/cmd-show-options.c
new file mode 100644
index 00000000..9e94e690
--- /dev/null
+++ b/cmd-show-options.c
@@ -0,0 +1,170 @@
+/* $Id: cmd-show-options.c,v 1.1 2008-06-15 08:01:54 nicm Exp $ */
+
+/*
+ * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tmux.h"
+
+/*
+ * Show options.
+ */
+
+int	cmd_show_options_parse(struct cmd *, int, char **, char **);
+void	cmd_show_options_exec(struct cmd *, struct cmd_ctx *);
+void	cmd_show_options_send(struct cmd *, struct buffer *);
+void	cmd_show_options_recv(struct cmd *, struct buffer *);
+void	cmd_show_options_free(struct cmd *);
+void	cmd_show_options_print(struct cmd *, char *, size_t);
+
+struct cmd_show_options_data {
+	char	*target;
+	int	 flag_global;
+};
+
+/*
+ * XXX Can't use cmd_target because we want -t not to use current if missing
+ * (this could be a flag??).
+ */
+const struct cmd_entry cmd_show_options_entry = {
+	"show-options", "show",
+	"[-t target-window]",
+	0,
+	NULL,
+	cmd_show_options_parse,
+	cmd_show_options_exec,
+	cmd_show_options_send,
+	cmd_show_options_recv,
+	cmd_show_options_free,
+	cmd_show_options_print
+};
+
+int
+cmd_show_options_parse(struct cmd *self, int argc, char **argv, char **cause)
+{
+	struct cmd_show_options_data	*data;
+	int				 opt;
+
+	self->data = data = xmalloc(sizeof *data);
+	data->target = NULL;
+	data->flag_global = 1;
+
+	while ((opt = getopt(argc, argv, "t:s:")) != EOF) {
+		switch (opt) {
+		case 't':
+			if (data->target == NULL)
+				data->target = xstrdup(optarg);
+			data->flag_global = 0;
+			break;
+		default:
+			goto usage;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+	if (argc != 0)
+		goto usage;
+
+	return (0);
+
+usage:
+	xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
+
+	self->entry->free(self);
+	return (-1);
+}
+
+void
+cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
+{
+	struct cmd_show_options_data	*data = self->data;
+	struct session			*s;
+	struct options			*oo;
+	struct options_entry		*o;
+
+	if (data == NULL)
+		return;
+
+	if (data->flag_global ||
+	    ((s = cmd_find_session(ctx, data->target))) == NULL)
+		oo = &global_options;
+	else
+		oo = &s->options;
+
+	SPLAY_FOREACH(o, options_tree, &oo->tree) {
+		switch (o->type) {
+		case OPTIONS_STRING:
+			ctx->print(
+			    ctx, "%s \"%s\"", o->name, o->value.string);
+			break;
+		case OPTIONS_NUMBER:
+			ctx->print(ctx, "%s %lld", o->name, o->value.number);
+			break;
+		case OPTIONS_KEY:
+			ctx->print(ctx, "%s %s", o->name, 
+			    key_string_lookup_key(o->value.key));
+			break;
+		case OPTIONS_COLOURS:
+			ctx->print(ctx, "%s fg=%s, bg=%s", o->name,
+			    screen_colourstring(o->value.colours >> 4),
+			    screen_colourstring(o->value.colours & 0x0f));
+			break;
+		}
+	}
+
+	if (ctx->cmdclient != NULL)
+		server_write_client(ctx->cmdclient, MSG_EXIT, NULL, 0);
+}
+
+void
+cmd_show_options_send(struct cmd *self, struct buffer *b)
+{
+	struct cmd_show_options_data	*data = self->data;
+
+	buffer_write(b, data, sizeof *data);
+	cmd_send_string(b, data->target);
+}
+
+void
+cmd_show_options_recv(struct cmd *self, struct buffer *b)
+{
+	struct cmd_show_options_data	*data;
+
+	self->data = data = xmalloc(sizeof *data);
+	buffer_read(b, data, sizeof *data);
+	data->target = cmd_recv_string(b);
+}
+
+void
+cmd_show_options_free(struct cmd *self)
+{
+	struct cmd_show_options_data	*data = self->data;
+
+	if (data->target != NULL)
+		xfree(data->target);
+	xfree(data);
+}
+
+void
+cmd_show_options_print(struct cmd *self, char *buf, size_t len)
+{
+	xsnprintf(buf, len, "%s", self->entry->name);
+}
diff --git a/cmd.c b/cmd.c
index 6685ef0a..73772719 100644
--- a/cmd.c
+++ b/cmd.c
@@ -1,4 +1,4 @@
-/* $Id: cmd.c,v 1.44 2008-06-05 22:59:38 nicm Exp $ */
+/* $Id: cmd.c,v 1.45 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -51,10 +51,11 @@ const struct cmd_entry *cmd_table[] = {
 	&cmd_rename_window_entry,
 	&cmd_scroll_mode_entry,
 	&cmd_select_window_entry,
-	&cmd_set_window_option_entry,
 	&cmd_send_keys_entry,
 	&cmd_send_prefix_entry,
 	&cmd_set_option_entry,
+	&cmd_set_window_option_entry,
+	&cmd_show_options_entry,
 	&cmd_start_server_entry,
 	&cmd_swap_window_entry,
 	&cmd_switch_client_entry,
diff --git a/options.c b/options.c
index 69ad750c..24b3f759 100644
--- a/options.c
+++ b/options.c
@@ -1,4 +1,4 @@
-/* $Id: options.c,v 1.1 2008-06-03 21:42:37 nicm Exp $ */
+/* $Id: options.c,v 1.2 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -30,6 +30,9 @@
 
 SPLAY_GENERATE(options_tree, options_entry, entry, options_cmp);
 
+struct options_entry *options_find1(struct options *, const char *);
+struct options_entry *options_find(struct options *, const char *);
+
 int
 options_cmp(struct options_entry *o1, struct options_entry *o2)
 {
@@ -58,15 +61,38 @@ options_free(struct options *oo)
 	}
 }
 
-void printflike3
-options_set_string(struct options *oo, const char *name, const char *fmt, ...)
+struct options_entry *
+options_find1(struct options *oo, const char *name)
+{
+	struct options_entry	p;
+
+	p.name = name;
+	return (SPLAY_FIND(options_tree, &oo->tree, &p));
+}
+
+struct options_entry *
+options_find(struct options *oo, const char *name)
 {
 	struct options_entry	*o, p;
-	va_list			 ap;
 
 	p.name = name;
 	o = SPLAY_FIND(options_tree, &oo->tree, &p);
-	if (o == NULL) {
+	while (o == NULL) {
+		oo = oo->parent;
+		if (oo == NULL)
+			break;
+		o = SPLAY_FIND(options_tree, &oo->tree, &p);
+	}
+	return (o);
+}
+
+void printflike3
+options_set_string(struct options *oo, const char *name, const char *fmt, ...)
+{
+	struct options_entry	*o;
+	va_list			 ap;
+
+	if ((o = options_find1(oo, name)) == NULL) {
 		o = xmalloc(sizeof *o);
 		o->name = xstrdup(name);
 		SPLAY_INSERT(options_tree, &oo->tree, o);
@@ -82,17 +108,9 @@ options_set_string(struct options *oo, const char *name, const char *fmt, ...)
 char *
 options_get_string(struct options *oo, const char *name)
 {
-	struct options_entry	*o, p;
+	struct options_entry	*o;
 
-	p.name = name;
-	o = SPLAY_FIND(options_tree, &oo->tree, &p);
-	while (o == NULL) {
-		oo = oo->parent;
-		o = SPLAY_FIND(options_tree, &oo->tree, &p);
-		if (o != NULL)
-			break;
-	}
-	if (o == NULL)
+	if ((o = options_find(oo, name)) == NULL)
 		fatalx("missing option");
 	if (o->type != OPTIONS_STRING)
 		fatalx("option not a string");
@@ -102,11 +120,9 @@ options_get_string(struct options *oo, const char *name)
 void
 options_set_number(struct options *oo, const char *name, long long value)
 {
-	struct options_entry	*o, p;
+	struct options_entry	*o;
 
-	p.name = name;
-	o = SPLAY_FIND(options_tree, &oo->tree, &p);
-	if (o == NULL) {
+	if ((o = options_find1(oo, name)) == NULL) {
 		o = xmalloc(sizeof *o);
 		o->name = xstrdup(name);
 		SPLAY_INSERT(options_tree, &oo->tree, o);
@@ -118,22 +134,72 @@ options_set_number(struct options *oo, const char *name, long long value)
 
 }
 
-int
+long long
 options_get_number(struct options *oo, const char *name)
 {
-	struct options_entry	*o, p;
+	struct options_entry	*o;
 
-	p.name = name;
-	o = SPLAY_FIND(options_tree, &oo->tree, &p);
-	while (o == NULL) {
-		oo = oo->parent;
-		o = SPLAY_FIND(options_tree, &oo->tree, &p);
-		if (o != NULL)
-			break;
-	}
-	if (o == NULL)
+	if ((o = options_find(oo, name)) == NULL)
 		fatalx("missing option");
 	if (o->type != OPTIONS_NUMBER)
 		fatalx("option not a number");
 	return (o->value.number);
 }
+
+void
+options_set_key(struct options *oo, const char *name, int value)
+{
+	struct options_entry	*o;
+
+	if ((o = options_find1(oo, name)) == NULL) {
+		o = xmalloc(sizeof *o);
+		o->name = xstrdup(name);
+		SPLAY_INSERT(options_tree, &oo->tree, o);
+	} else if (o->type == OPTIONS_STRING)
+		xfree(o->value.string);
+
+	o->type = OPTIONS_KEY;
+	o->value.key = value;
+
+}
+
+int
+options_get_key(struct options *oo, const char *name)
+{
+	struct options_entry	*o;
+
+	if ((o = options_find(oo, name)) == NULL)
+		fatalx("missing option");
+	if (o->type != OPTIONS_KEY)
+		fatalx("option not a key");
+	return (o->value.key);
+}
+
+void
+options_set_colours(struct options *oo, const char *name, u_char value)
+{
+	struct options_entry	*o;
+
+	if ((o = options_find1(oo, name)) == NULL) {
+		o = xmalloc(sizeof *o);
+		o->name = xstrdup(name);
+		SPLAY_INSERT(options_tree, &oo->tree, o);
+	} else if (o->type == OPTIONS_STRING)
+		xfree(o->value.string);
+
+	o->type = OPTIONS_COLOURS;
+	o->value.colours = value;
+
+}
+
+u_char
+options_get_colours(struct options *oo, const char *name)
+{
+	struct options_entry	*o;
+
+	if ((o = options_find(oo, name)) == NULL)
+		fatalx("missing option");
+	if (o->type != OPTIONS_COLOURS)
+		fatalx("option not a colours");
+	return (o->value.colours);
+}
diff --git a/server.c b/server.c
index ae97e1d5..53053415 100644
--- a/server.c
+++ b/server.c
@@ -1,4 +1,4 @@
-/* $Id: server.c,v 1.63 2008-06-14 16:47:20 nicm Exp $ */
+/* $Id: server.c,v 1.64 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -485,7 +485,7 @@ server_handle_client(struct client *c)
 	struct window	*w = c->session->curw->window;
 	int		 key, prefix;
 
-	prefix = options_get_number(&c->session->options, "prefix-key");
+	prefix = options_get_key(&c->session->options, "prefix-key");
 	while (tty_keys_next(&c->tty, &key) == 0) {
 		if (c->flags & CLIENT_PREFIX) {
 			key_bindings_dispatch(key, c);
diff --git a/status.c b/status.c
index a207be04..23fe4659 100644
--- a/status.c
+++ b/status.c
@@ -1,4 +1,4 @@
-/* $Id: status.c,v 1.25 2008-06-14 16:47:20 nicm Exp $ */
+/* $Id: status.c,v 1.26 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -36,7 +36,7 @@ status_redraw(struct client *c)
 	u_char		 		scolour;
 	u_int		 		slines;
 
-	scolour = options_get_number(&c->session->options, "status-colour");
+	scolour = options_get_colours(&c->session->options, "status-colour");
 	slines = options_get_number(&c->session->options, "status-lines");
 	if (slines == 0 || c->sy <= slines)
 		return;
diff --git a/tmux.1 b/tmux.1
index 19ea939c..55474806 100644
--- a/tmux.1
+++ b/tmux.1
@@ -1,4 +1,4 @@
-.\" $Id: tmux.1,v 1.32 2008-06-11 06:19:56 nicm Exp $
+.\" $Id: tmux.1,v 1.33 2008-06-15 08:01:54 nicm Exp $
 .\"
 .\" Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
 .\"
@@ -136,7 +136,7 @@ to exit from it.
 .Sh KEY BINDINGS
 .Nm
 may be controlled from an attached client by using a key combination of a
-prefix,
+prefix key,
 .Ql ^B
 (ctrl-B) by default, followed by a command key.
 .Pp
@@ -505,7 +505,7 @@ The default is
 Set the maximum number of lines held in window history.
 This setting applies only to new windows - existing window histories are not
 resized and retain the limit at the point they were created.
-.It Ic prefix Ar key
+.It Ic prefix-key Ar key
 Set the current prefix key.
 .It Xo Ic status
 .Op Ic on | Ic off
diff --git a/tmux.c b/tmux.c
index be11763a..fe6bf773 100644
--- a/tmux.c
+++ b/tmux.c
@@ -1,4 +1,4 @@
-/* $Id: tmux.c,v 1.54 2008-06-06 17:20:30 nicm Exp $ */
+/* $Id: tmux.c,v 1.55 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -200,10 +200,10 @@ main(int argc, char **argv)
 
 	options_init(&global_options, NULL);
 	options_set_number(&global_options, "status-lines", 1);
-	options_set_number(&global_options, "status-colour", 0x02);
+	options_set_colours(&global_options, "status-colour", 0x02);
 	options_set_number(&global_options, "bell-action", BELL_ANY);
 	options_set_number(&global_options, "history-limit", 2000);
-	options_set_number(&global_options, "prefix-key", META);
+	options_set_key(&global_options, "prefix-key", META);
 	options_set_string(&global_options, "status-left", "");
 	options_set_string(
 	    &global_options, "status-right", "%%H:%%M %%d-%%b-%%y");
diff --git a/tmux.h b/tmux.h
index fadd9329..69479a05 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.141 2008-06-14 16:47:20 nicm Exp $ */
+/* $Id: tmux.h,v 1.142 2008-06-15 08:01:54 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -557,11 +557,15 @@ struct options_entry {
 
 	enum {
 		OPTIONS_STRING,
-		OPTIONS_NUMBER
+		OPTIONS_NUMBER,
+		OPTIONS_KEY,
+		OPTIONS_COLOURS
 	} type;
 	union {
 		char	*string;
 		long long number;
+		int	 key;
+		u_char	 colours;
 	} value;
 
 	SPLAY_ENTRY(options_entry) entry;
@@ -772,7 +776,11 @@ void printflike3 options_set_string(
     	    struct options *, const char *, const char *, ...);
 char   *options_get_string(struct options *, const char *);
 void	options_set_number(struct options *, const char *, long long);
-int	options_get_number(struct options *, const char *);
+long long options_get_number(struct options *, const char *);
+void	options_set_key(struct options *, const char *, int);
+int	options_get_key(struct options *, const char *);
+void	options_set_colours(struct options *, const char *, u_char);
+u_char	options_get_colours(struct options *, const char *);
 
 /* tty.c */
 void		 tty_init(struct tty *, char *, char *);
@@ -842,6 +850,7 @@ extern const struct cmd_entry cmd_send_keys_entry;
 extern const struct cmd_entry cmd_send_prefix_entry;
 extern const struct cmd_entry cmd_set_option_entry;
 extern const struct cmd_entry cmd_set_window_option_entry;
+extern const struct cmd_entry cmd_show_options_entry;
 extern const struct cmd_entry cmd_start_server_entry;
 extern const struct cmd_entry cmd_swap_window_entry;
 extern const struct cmd_entry cmd_switch_client_entry;