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Instead of setting up the default keys by building the key struct
directly with a helper function in the cmd_entry, include a table of
bind-key commands and pass them through the command parser and a
temporary cmd_q.

As well as being smaller, this will allow default bindings to be command
sequences which will probably be needed soon.

/* $OpenBSD: cmd-unlink-window.c,v 1.14 2014/10/20 22:29:25 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"

/*
 * Unlink a window, unless it would be destroyed by doing so (only one link).
 */

enum cmd_retval	 cmd_unlink_window_exec(struct cmd *, struct cmd_q *);

const struct cmd_entry cmd_unlink_window_entry = {
	"unlink-window", "unlinkw",
	"kt:", 0, 0,
	"[-k] " CMD_TARGET_WINDOW_USAGE,
	0,
	cmd_unlink_window_exec
};

enum cmd_retval
cmd_unlink_window_exec(struct cmd *self, struct cmd_q *cmdq)
{
	struct args		*args = self->args;
	struct winlink		*wl;
	struct window		*w;
	struct session		*s, *s2;
	struct session_group	*sg;
	u_int			 references;

	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
		return (CMD_RETURN_ERROR);
	w = wl->window;

	sg = session_group_find(s);
	if (sg != NULL) {
		references = 0;
		TAILQ_FOREACH(s2, &sg->sessions, gentry)
			references++;
	} else
		references = 1;

	if (!args_has(self->args, 'k') && w->references == references) {
		cmdq_error(cmdq, "window is only linked to one session");
		return (CMD_RETURN_ERROR);
	}

	server_unlink_window(s, wl);
	recalculate_sizes();

	return (CMD_RETURN_NORMAL);
}