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Treat keys in identify mode (display-panes) specially and handle them
immediately rather than queuing them (the command can block the queue
which means they were not being seen until it finished which was too
late). Reported by denis@ and solene@, ok solene@.

/* $OpenBSD: cmd-copy-mode.c,v 1.38 2019/05/07 11:24:03 nicm Exp $ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * 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"

/*
 * Enter copy or clock mode.
 */

static enum cmd_retval	cmd_copy_mode_exec(struct cmd *, struct cmdq_item *);

const struct cmd_entry cmd_copy_mode_entry = {
	.name = "copy-mode",
	.alias = NULL,

	.args = { "Met:u", 0, 0 },
	.usage = "[-Mu] " CMD_TARGET_PANE_USAGE,

	.target = { 't', CMD_FIND_PANE, 0 },

	.flags = CMD_AFTERHOOK,
	.exec = cmd_copy_mode_exec
};

const struct cmd_entry cmd_clock_mode_entry = {
	.name = "clock-mode",
	.alias = NULL,

	.args = { "t:", 0, 0 },
	.usage = CMD_TARGET_PANE_USAGE,

	.target = { 't', CMD_FIND_PANE, 0 },

	.flags = CMD_AFTERHOOK,
	.exec = cmd_copy_mode_exec
};

static enum cmd_retval
cmd_copy_mode_exec(struct cmd *self, struct cmdq_item *item)
{
	struct args		*args = self->args;
	struct cmdq_shared	*shared = item->shared;
	struct client		*c = item->client;
	struct session		*s;
	struct window_pane	*wp = item->target.wp;

	if (args_has(args, 'M')) {
		if ((wp = cmd_mouse_pane(&shared->mouse, &s, NULL)) == NULL)
			return (CMD_RETURN_NORMAL);
		if (c == NULL || c->session != s)
			return (CMD_RETURN_NORMAL);
	}

	if (self->entry == &cmd_clock_mode_entry) {
		window_pane_set_mode(wp, &window_clock_mode, NULL, NULL);
		return (CMD_RETURN_NORMAL);
	}

	if (!window_pane_set_mode(wp, &window_copy_mode, NULL, args)) {
		if (args_has(args, 'M'))
			window_copy_start_drag(c, &shared->mouse);
	}
	if (args_has(self->args, 'u'))
		window_copy_pageup(wp, 0);

	return (CMD_RETURN_NORMAL);
}