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Import tmux, a terminal multiplexor allowing (among other things) a single
terminal to be switched between several different windows and programs
displayed on one terminal be detached from one terminal and moved to another.

ok deraadt pirofti

/* $OpenBSD: cmd-up-pane.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */

/*
 * Copyright (c) 2009 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"

/*
 * Move up a pane.
 */

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

const struct cmd_entry cmd_up_pane_entry = {
	"up-pane", "upp",
	CMD_TARGET_WINDOW_USAGE,
	0,
	cmd_target_init,
	cmd_target_parse,
	cmd_up_pane_exec,
	cmd_target_send,
	cmd_target_recv,
	cmd_target_free,
	cmd_target_print
};

int
cmd_up_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
{
	struct cmd_target_data	*data = self->data;
	struct winlink		*wl;
	struct window		*w;

	if ((wl = cmd_find_window(ctx, data->target, NULL)) == NULL)
		return (-1);
	w = wl->window;

	do {
		w->active = TAILQ_PREV(w->active, window_panes, entry);
		if (w->active == NULL)
			w->active = TAILQ_LAST(&w->panes, window_panes);
		layout_refresh(w, 1);
	} while (w->active->flags & PANE_HIDDEN);

	return (0);
}