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Drop the ability to have a list of keys in the prefix in favour of two
separate options, prefix and prefix2. This simplifies the code and gets
rid the data options type which was only used for this one option.

Also add a -2 flag to send-prefix to send the secondary prefix key,
fixing a cause of minor irritation.

People who want three prefix keys are out of luck :-).

/* $OpenBSD: cmd-send-prefix.c,v 1.9 2012/01/21 08:40:09 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 "tmux.h"

/*
 * Send prefix key as a key.
 */

int	cmd_send_prefix_exec(struct cmd *, struct cmd_ctx *);

const struct cmd_entry cmd_send_prefix_entry = {
	"send-prefix", NULL,
	"2t:", 0, 0,
	"[-2] " CMD_TARGET_PANE_USAGE,
	0,
	NULL,
	NULL,
	cmd_send_prefix_exec
};

int
cmd_send_prefix_exec(struct cmd *self, struct cmd_ctx *ctx)
{
	struct args		*args = self->args;
	struct session		*s;
	struct window_pane	*wp;
	int			 key;

	if (cmd_find_pane(ctx, args_get(args, 't'), &s, &wp) == NULL)
		return (-1);

	if (args_has(args, '2'))
		key = options_get_number(&s->options, "prefix2");
	else
		key = options_get_number(&s->options, "prefix");
	window_pane_key(wp, s, key);

	return (0);
}