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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
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										235
									
								
								cmd-split-window.c
									
									
									
									
									
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								cmd-split-window.c
									
									
									
									
									
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							@@ -0,0 +1,235 @@
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/* $OpenBSD$ */
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/*
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 * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <sys/types.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "tmux.h"
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/*
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 * Split a window (add a new pane).
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 */
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int	cmd_split_window_parse(struct cmd *, int, char **, char **);
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int	cmd_split_window_exec(struct cmd *, struct cmd_ctx *);
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void	cmd_split_window_send(struct cmd *, struct buffer *);
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void	cmd_split_window_recv(struct cmd *, struct buffer *);
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void	cmd_split_window_free(struct cmd *);
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void	cmd_split_window_init(struct cmd *, int);
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size_t	cmd_split_window_print(struct cmd *, char *, size_t);
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struct cmd_split_window_data {
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	char	*target;
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	char	*cmd;
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	int	 flag_detached;
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	int	 percentage;
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	int	 lines;
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};
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const struct cmd_entry cmd_split_window_entry = {
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	"split-window", "splitw",
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	"[-d] [-p percentage|-l lines] [-t target-window] [command]",
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	0,
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	cmd_split_window_init,
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	cmd_split_window_parse,
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	cmd_split_window_exec,
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	cmd_split_window_send,
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	cmd_split_window_recv,
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	cmd_split_window_free,
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	cmd_split_window_print
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};
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void
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cmd_split_window_init(struct cmd *self, unused int arg)
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{
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	struct cmd_split_window_data	 *data;
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	self->data = data = xmalloc(sizeof *data);
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	data->target = NULL;
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	data->cmd = NULL;
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	data->flag_detached = 0;
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	data->percentage = -1;
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	data->lines = -1;
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}
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int
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cmd_split_window_parse(struct cmd *self, int argc, char **argv, char **cause)
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{
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	struct cmd_split_window_data	*data;
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	int				 opt, n;
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	const char			*errstr;
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	self->entry->init(self, 0);
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	data = self->data;
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	while ((opt = getopt(argc, argv, "dl:p:t:")) != -1) {
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		switch (opt) {
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		case 'd':
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			data->flag_detached = 1;
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			break;
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		case 't':
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			if (data->target == NULL)
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				data->target = xstrdup(optarg);
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			break;
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		case 'l':
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			if (data->percentage == -1 && data->lines == -1) {
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				n = strtonum(optarg, 1, INT_MAX, &errstr);
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				if (errstr != NULL) {
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					xasprintf(cause, "lines %s", errstr);
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					goto error;
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				}
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				data->lines = n;
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			}
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			break;
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		case 'p':
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			if (data->lines == -1 && data->percentage == -1) {
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				n = strtonum(optarg, 1, 100, &errstr);
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				if (errstr != NULL) {
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					xasprintf(
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					    cause, "percentage %s", errstr);
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					goto error;
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				}
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				data->percentage = n;
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			}
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			break;
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		default:
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			goto usage;
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		}
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	}
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	argc -= optind;
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	argv += optind;
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	if (argc != 0 && argc != 1)
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		goto usage;
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	if (argc == 1)
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		data->cmd = xstrdup(argv[0]);
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	return (0);
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usage:
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	xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
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error:
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	self->entry->free(self);
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	return (-1);
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}
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int
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cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
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{
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	struct cmd_split_window_data	*data = self->data;
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	struct session			*s;
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	struct winlink			*wl;
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	struct window			*w;
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	struct window_pane		*wp;
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	const char		       **env;
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	char		 		*cmd, *cwd, *cause;
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	u_int				 hlimit, lines;
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	if ((wl = cmd_find_window(ctx, data->target, &s)) == NULL)
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		return (-1);
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	w = wl->window;
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	env = server_fill_environ(s);
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	cmd = data->cmd;
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	if (cmd == NULL)
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		cmd = options_get_string(&s->options, "default-command");
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	if (ctx->cmdclient == NULL || ctx->cmdclient->cwd == NULL)
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		cwd = options_get_string(&global_options, "default-path");
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	else
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		cwd = ctx->cmdclient->cwd;
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	lines = -1;
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	if (data->lines != -1)
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		lines = data->lines;
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	else if (data->percentage != -1)
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		lines = (w->active->sy * data->percentage) / 100;
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	hlimit = options_get_number(&s->options, "history-limit");
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	wp = window_add_pane(w, lines, cmd, cwd, env, hlimit, &cause);
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	if (wp == NULL) {
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		ctx->error(ctx, "create pane failed: %s", cause);
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		xfree(cause);
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		return (-1);
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	}
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	server_redraw_window(w);
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	if (!data->flag_detached) {
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		window_set_active_pane(w, wp);
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		session_select(s, wl->idx);
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		server_redraw_session(s);
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	} else
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		server_status_session(s);
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	layout_refresh(w, 0);
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	return (0);
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}
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void
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cmd_split_window_send(struct cmd *self, struct buffer *b)
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{
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	struct cmd_split_window_data	*data = self->data;
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	buffer_write(b, data, sizeof *data);
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	cmd_send_string(b, data->target);
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	cmd_send_string(b, data->cmd);
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}
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void
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cmd_split_window_recv(struct cmd *self, struct buffer *b)
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{
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	struct cmd_split_window_data	*data;
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	self->data = data = xmalloc(sizeof *data);
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	buffer_read(b, data, sizeof *data);
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	data->target = cmd_recv_string(b);
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	data->cmd = cmd_recv_string(b);
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}
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void
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cmd_split_window_free(struct cmd *self)
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{
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	struct cmd_split_window_data	*data = self->data;
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	if (data->target != NULL)
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		xfree(data->target);
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	if (data->cmd != NULL)
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		xfree(data->cmd);
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	xfree(data);
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}
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size_t
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cmd_split_window_print(struct cmd *self, char *buf, size_t len)
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{
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	struct cmd_split_window_data	*data = self->data;
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	size_t				 off = 0;
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	off += xsnprintf(buf, len, "%s", self->entry->name);
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	if (data == NULL)
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		return (off);
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	if (off < len && data->flag_detached)
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		off += xsnprintf(buf + off, len - off, " -d");
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	if (off < len && data->target != NULL)
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		off += cmd_prarg(buf + off, len - off, " -t ", data->target);
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	if (off < len && data->cmd != NULL)
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		off += cmd_prarg(buf + off, len - off, " ", data->cmd);
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	return (off);
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}
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