3.1-rc.

ignore any containing control characters or invalid UTF-8. GitHub issue 2070.

.github/FUNDING.yml

@@ -0,0 +1 @@
+liberapay: tmux

CHANGES

@@ -1,3 +1,135 @@
+CHANGES FROM 3.0 to 3.1
+
+* Add support for adding a note to a key binding (with bind-key -N) and use
+  this to add descriptions to the default key bindings. A new -N flag to
+  list-keys shows key bindings with notes. Change the default ? binding to use
+  this to show a readable summary of keys. Also extend command-prompt to return
+  the name of the key pressed and add a default binding (/) to show the note
+  for the next key pressed.
+
+* Add support for the iTerm2 DSR 1337 sequence to get the terminal version.
+
+* Treat plausible but invalid keys (like C-BSpace) as literal like any other
+  unrecognised string passed to send-keys
+
+* Detect iTerm2 and enable use of DECSLRM (much faster with horizontally split
+  windows).
+
+* Add -Z to default switch-client command in tree mode.
+
+* Add ~ to quoted characters for %%%.
+
+* Document client exit messages in the manual page.
+
+* Do not let read-only clients limit the size, unless all clients are
+  read-only.
+
+* Add a number of new formats to inspect what sessions and clients a window is
+  present or active in.
+
+* Change file reading and writing to go through the client if necessary. This
+  fixes commands like "tmux loadb /dev/fd/X". Also modify source-file to
+  support "-" for standard input, like load-buffer and save-buffer.
+
+* Add ~/.config/tmux/tmux.conf to the default search path for configuration
+  files.
+
+* Bump the escape sequence timeout to five seconds to allow for longer
+  legitimate sequences.
+
+* Make a best effort to set xpixel and ypixel for each pane and add formats for
+  them.
+
+* Add push-default to status-left and status-right in status-format[0].
+
+* Add -F flag to send-keys to expand formats in search-backward and forward
+  copy mode commands and copy_cursor_word and copy_cursor_line formats for word
+  and line at cursor in copy mode. Use for default # and * binding with vi(1)
+  keys.
+
+* Do not clear search marks on cursor movement with vi(1) keys.
+
+* Add p format modifier for padding to width and allow multiple substitutions
+  in a single format.
+
+* Add -f for full size to join-pane (like split-window).
+
+* Handle OSC 7 (a VTE extension) and put the result in a new format (pane_path).
+
+* Change new-session -A without a session name (that is, no -s option also) to
+  attach to the best existing session like attach-session rather than creating
+  a new one.
+
+* Add an option to set the key sent by backspace for those whose system uses ^H
+  rather than ^?.
+
+* Add formats for cursor and selection position in copy mode.
+
+* Add support for percentage sizes for resize-pane ("-x 10%"). Also change
+  split-window and join-pane -l to accept similar percentages and no longer
+  document -p.
+
+* Make select-pane -P set window-active-style also to match previous behaviour.
+
+* Do not use bright when emulating 256 colours on an 8 colour terminal because
+  it is also bold on some terminals.
+
+* Add a "latest" window-size option which tries to size windows based on the
+  most recently used client. This is now the default.
+
+* Make select-pane -P set window-active-style also to match previous behaviour.
+
+* Do not truncate list-keys output.
+
+* Turn automatic-rename back on if the \033k rename escape sequence is used
+  with an empty name.
+
+* Add support for percentage sizes for resize-pane ("-x 10%"). Also change
+  split-window and join-pane -l to accept similar percentages and deprecate the
+  -p flag.
+
+* Add -F flag to send-keys to expand formats in search-backward and forward
+  copy mode commands, this makes it easier to use the cursor_word and
+  cursor_line formats.
+
+* Add formats for word and line at cursor position in copy mode.
+
+* Add formats for cursor and selection position in copy mode
+
+* Support all the forms of RGB colour strings in OSC sequences rather than
+  requiring two digits.
+
+* Limit lazy resize to panes in attached sessions only
+
+* Add an option to set the key sent by backspace for those whose system uses ^H
+  rather than ^?.
+
+* Change new-session -A without a session name (that is, no -s option also) to
+  attach to the best existing session like attach-session rather than a new
+  one.
+
+* Change window-size default from smallest to latest.
+
+* Add simple support for OSC 7 (result is available in the pane_path format).
+
+* Add push-default and pop-default for styles which change the colours and
+  attributes used for #[default]. These are used in status-format to restore
+  the behaviour of window-status-style being the default for
+  window-status-format.
+
+* Add window_marked_flag.
+
+* Add cursor-down-and-cancel in copy mode.
+
+* Default to previous search string for search-forward and search-backward.
+
+* Add -Z flag to rotate-window, select-pane, swap-pane, switch-client to
+  preserve zoomed state.
+
+* Add -N to capture-pane to preserve trailing spaces.
+
+* Add reverse sorting in tree, client and buffer modes.
+
 CHANGES FROM 3.0 to 3.0a
 
 * Do not require REG_STARTEND.
@@ -102,7 +234,7 @@ CHANGES FROM 2.9 to 3.0
 * Add the ability to create simple menus. Introduces new command
   display-menu. Default menus are bound to MouseDown3 on the status line;
   MouseDown3 or M-MouseDown3 on panes; MouseDown3 in tree, client and
-  buffer modes; and C-b C-m and C-b M-m.
+  buffer modes; and C-b < and >.
 
 * Allow panes to be empty (no command). They can be created either by piping to
   split-window -I, or by passing an empty command ('') to split-window. Output

Makefile.am

@@ -6,11 +6,14 @@ CLEANFILES = tmux.1.mdoc tmux.1.man cmd-parse.c
 
 # Distribution tarball options.
 EXTRA_DIST = \
-	CHANGES README README.ja COPYING example_tmux.conf compat/*.[ch] \
+	CHANGES README README.ja COPYING example_tmux.conf \
 	osdep-*.c mdoc2man.awk tmux.1
+dist_EXTRA_tmux_SOURCES = compat/*.[ch]
 
 # Preprocessor flags.
-AM_CPPFLAGS += @XOPEN_DEFINES@ -DTMUX_CONF="\"$(sysconfdir)/tmux.conf\""
+AM_CPPFLAGS += @XOPEN_DEFINES@ \
+	-DTMUX_VERSION="\"@VERSION@\"" \
+	-DTMUX_CONF="\"$(sysconfdir)/tmux.conf:~/.tmux.conf:~/.config/tmux/tmux.conf\""
 
 # Additional object files.
 LDADD = $(LIBOBJS)
@@ -130,6 +133,7 @@ dist_tmux_SOURCES = \
 	control-notify.c \
 	control.c \
 	environ.c \
+	file.c \
 	format.c \
 	format-draw.c \
 	grid-view.c \

attributes.c

@@ -59,8 +59,8 @@ attributes_fromstring(const char *str)
 	size_t		end;
 	u_int		i;
 	struct {
-		const char*	name;
-		int		attr;
+		const char	*name;
+		int		 attr;
 	} table[] = {
 		{ "bright", GRID_ATTR_BRIGHT },
 		{ "bold", GRID_ATTR_BRIGHT },

cfg.c

@@ -66,12 +66,45 @@ set_cfg_file(const char *path)
 	cfg_file = xstrdup(path);
 }
 
+static char *
+expand_cfg_file(const char *path, const char *home)
+{
+	char			*expanded, *name;
+	const char		*end;
+	struct environ_entry	*value;
+
+	if (strncmp(path, "~/", 2) == 0) {
+		if (home == NULL)
+			return (NULL);
+		xasprintf(&expanded, "%s%s", home, path + 1);
+		return (expanded);
+	}
+
+	if (*path == '$') {
+		end = strchr(path, '/');
+		if (end == NULL)
+			name = xstrdup(path + 1);
+		else
+			name = xstrndup(path + 1, end - path - 1);
+		value = environ_find(global_environ, name);
+		free(name);
+		if (value == NULL)
+			return (NULL);
+		if (end == NULL)
+			end = "";
+		xasprintf(&expanded, "%s%s", value->value, end);
+		return (expanded);
+	}
+
+	return (xstrdup(path));
+}
+
 void
 start_cfg(void)
 {
-	const char	*home;
-	int		 flags = 0;
+	const char	*home = find_home();
 	struct client	*c;
+	char		*path, *copy, *next, *expanded;
 
 	/*
 	 * Configuration files are loaded without a client, so commands are run
@@ -89,15 +122,21 @@ start_cfg(void)
 		cmdq_append(c, cfg_item);
 	}
 
-	if (cfg_file == NULL)
-		load_cfg(TMUX_CONF, c, NULL, CMD_PARSE_QUIET, NULL);
-
-	if (cfg_file == NULL && (home = find_home()) != NULL) {
-		xasprintf(&cfg_file, "%s/.tmux.conf", home);
-		flags = CMD_PARSE_QUIET;
-	}
-	if (cfg_file != NULL)
-		load_cfg(cfg_file, c, NULL, flags, NULL);
+	if (cfg_file == NULL) {
+		path = copy = xstrdup(TMUX_CONF);
+		while ((next = strsep(&path, ":")) != NULL) {
+			expanded = expand_cfg_file(next, home);
+			if (expanded == NULL) {
+				log_debug("couldn't expand %s", next);
+				continue;
+			}
+			log_debug("expanded %s to %s", next, expanded);
+			load_cfg(expanded, c, NULL, CMD_PARSE_QUIET, NULL);
+			free(expanded);
+		}
+		free(copy);
+	} else
+		load_cfg(cfg_file, c, NULL, 0, NULL);
 
 	cmdq_append(NULL, cmdq_get_callback(cfg_done, NULL));
 }
@@ -145,9 +184,55 @@ load_cfg(const char *path, struct client *c, struct cmdq_item *item, int flags,
 
 	new_item0 = cmdq_get_command(pr->cmdlist, NULL, NULL, 0);
 	if (item != NULL)
-		cmdq_insert_after(item, new_item0);
+		new_item0 = cmdq_insert_after(item, new_item0);
 	else
-		cmdq_append(NULL, new_item0);
+		new_item0 = cmdq_append(NULL, new_item0);
+	cmd_list_free(pr->cmdlist);
+
+	if (new_item != NULL)
+		*new_item = new_item0;
+	return (0);
+}
+
+int
+load_cfg_from_buffer(const void *buf, size_t len, const char *path,
+    struct client *c, struct cmdq_item *item, int flags,
+    struct cmdq_item **new_item)
+{
+	struct cmd_parse_input	 pi;
+	struct cmd_parse_result	*pr;
+	struct cmdq_item	*new_item0;
+
+	if (new_item != NULL)
+		*new_item = NULL;
+
+	log_debug("loading %s", path);
+
+	memset(&pi, 0, sizeof pi);
+	pi.flags = flags;
+	pi.file = path;
+	pi.line = 1;
+	pi.item = item;
+	pi.c = c;
+
+	pr = cmd_parse_from_buffer(buf, len, &pi);
+	if (pr->status == CMD_PARSE_EMPTY)
+		return (0);
+	if (pr->status == CMD_PARSE_ERROR) {
+		cfg_add_cause("%s", pr->error);
+		free(pr->error);
+		return (-1);
+	}
+	if (flags & CMD_PARSE_PARSEONLY) {
+		cmd_list_free(pr->cmdlist);
+		return (0);
+	}
+
+	new_item0 = cmdq_get_command(pr->cmdlist, NULL, NULL, 0);
+	if (item != NULL)
+		new_item0 = cmdq_insert_after(item, new_item0);
+	else
+		new_item0 = cmdq_append(NULL, new_item0);
 	cmd_list_free(pr->cmdlist);
 
 	if (new_item != NULL)

client.c

@@ -35,7 +35,6 @@
 static struct tmuxproc	*client_proc;
 static struct tmuxpeer	*client_peer;
 static int		 client_flags;
-static struct event	 client_stdin;
 static enum {
 	CLIENT_EXIT_NONE,
 	CLIENT_EXIT_DETACHED,
@@ -46,19 +45,19 @@ static enum {
 	CLIENT_EXIT_EXITED,
 	CLIENT_EXIT_SERVER_EXITED,
 } client_exitreason = CLIENT_EXIT_NONE;
+static int		 client_exitflag;
 static int		 client_exitval;
 static enum msgtype	 client_exittype;
 static const char	*client_exitsession;
 static const char	*client_execshell;
 static const char	*client_execcmd;
 static int		 client_attached;
+static struct client_files client_files = RB_INITIALIZER(&client_files);
 
 static __dead void	 client_exec(const char *,const char *);
 static int		 client_get_lock(char *);
 static int		 client_connect(struct event_base *, const char *, int);
 static void		 client_send_identify(const char *, const char *);
-static void		 client_stdin_callback(int, short, void *);
-static void		 client_write(int, const char *, size_t);
 static void		 client_signal(int);
 static void		 client_dispatch(struct imsg *, void *);
 static void		 client_dispatch_attached(struct imsg *);
@@ -211,13 +210,34 @@ client_exit_message(void)
 	return ("unknown reason");
 }
 
+/* Exit if all streams flushed. */
+static void
+client_exit(void)
+{
+	struct client_file	*cf;
+	size_t 			 left;
+	int			 waiting = 0;
+
+	RB_FOREACH (cf, client_files, &client_files) {
+		if (cf->event == NULL)
+			continue;
+		left = EVBUFFER_LENGTH(cf->event->output);
+		if (left != 0) {
+			waiting++;
+			log_debug("file %u %zu bytes left", cf->stream, left);
+		}
+	}
+	if (waiting == 0)
+		proc_exit(client_proc);
+}
+
 /* Client main loop. */
 int
 client_main(struct event_base *base, int argc, char **argv, int flags)
 {
 	struct cmd_parse_result	*pr;
 	struct cmd		*cmd;
-	struct msg_command_data	*data;
+	struct msg_command	*data;
 	int			 cmdflags, fd, i;
 	const char		*ttynam, *cwd;
 	pid_t			 ppid;
@@ -291,7 +311,9 @@ client_main(struct event_base *base, int argc, char **argv, int flags)
 	 *
 	 * "sendfd" is dropped later in client_dispatch_wait().
 	 */
-	if (pledge("stdio unix sendfd proc exec tty", NULL) != 0)
+	if (pledge(
+	    "stdio rpath wpath cpath unix sendfd proc exec tty",
+	    NULL) != 0)
 		fatal("pledge failed");
 
 	/* Free stuff that is not used in the client. */
@@ -302,10 +324,7 @@ client_main(struct event_base *base, int argc, char **argv, int flags)
 	options_free(global_w_options);
 	environ_free(global_environ);
 
-	/* Create stdin handler. */
-	setblocking(STDIN_FILENO, 0);
-	event_set(&client_stdin, STDIN_FILENO, EV_READ|EV_PERSIST,
-	    client_stdin_callback, NULL);
+	/* Set up control mode. */
 	if (client_flags & CLIENT_CONTROLCONTROL) {
 		if (tcgetattr(STDIN_FILENO, &saved_tio) != 0) {
 			fprintf(stderr, "tcgetattr failed: %s\n",
@@ -428,39 +447,254 @@ client_send_identify(const char *ttynam, const char *cwd)
 	proc_send(client_peer, MSG_IDENTIFY_DONE, -1, NULL, 0);
 }
 
-/* Callback for client stdin read events. */
+/* File write error callback. */
 static void
-client_stdin_callback(__unused int fd, __unused short events,
-    __unused void *arg)
+client_write_error_callback(__unused struct bufferevent *bev,
+    __unused short what, void *arg)
 {
-	struct msg_stdin_data	data;
+	struct client_file	*cf = arg;
 
-	data.size = read(STDIN_FILENO, data.data, sizeof data.data);
-	if (data.size == -1 && (errno == EINTR || errno == EAGAIN))
-		return;
+	log_debug("write error file %d", cf->stream);
 
-	proc_send(client_peer, MSG_STDIN, -1, &data, sizeof data);
-	if (data.size <= 0)
-		event_del(&client_stdin);
+	bufferevent_free(cf->event);
+	cf->event = NULL;
+
+	close(cf->fd);
+	cf->fd = -1;
+
+	if (client_exitflag)
+		client_exit();
 }
 
-/* Force write to file descriptor. */
+/* File write callback. */
 static void
-client_write(int fd, const char *data, size_t size)
+client_write_callback(__unused struct bufferevent *bev, void *arg)
 {
-	ssize_t	used;
+	struct client_file	*cf = arg;
 
-	log_debug("%s: %.*s", __func__, (int)size, data);
-	while (size != 0) {
-		used = write(fd, data, size);
-		if (used == -1) {
-			if (errno == EINTR || errno == EAGAIN)
-				continue;
-			break;
-		}
-		data += used;
-		size -= used;
+	if (cf->closed && EVBUFFER_LENGTH(cf->event->output) == 0) {
+		bufferevent_free(cf->event);
+		close(cf->fd);
+		RB_REMOVE(client_files, &client_files, cf);
+		file_free(cf);
 	}
+
+	if (client_exitflag)
+		client_exit();
+}
+
+/* Open write file. */
+static void
+client_write_open(void *data, size_t datalen)
+{
+	struct msg_write_open	*msg = data;
+	const char		*path;
+	struct msg_write_ready	 reply;
+	struct client_file	 find, *cf;
+	const int		 flags = O_NONBLOCK|O_WRONLY|O_CREAT;
+	int			 error = 0;
+
+	if (datalen < sizeof *msg)
+		fatalx("bad MSG_WRITE_OPEN size");
+	if (datalen == sizeof *msg)
+		path = "-";
+	else
+		path = (const char *)(msg + 1);
+	log_debug("open write file %d %s", msg->stream, path);
+
+	find.stream = msg->stream;
+	if ((cf = RB_FIND(client_files, &client_files, &find)) == NULL) {
+		cf = file_create(NULL, msg->stream, NULL, NULL);
+		RB_INSERT(client_files, &client_files, cf);
+	} else {
+		error = EBADF;
+		goto reply;
+	}
+	if (cf->closed) {
+		error = EBADF;
+		goto reply;
+	}
+
+	cf->fd = -1;
+	if (msg->fd == -1)
+		cf->fd = open(path, msg->flags|flags, 0644);
+	else {
+		if (msg->fd != STDOUT_FILENO && msg->fd != STDERR_FILENO)
+			errno = EBADF;
+		else {
+			cf->fd = dup(msg->fd);
+			if (client_flags & CLIENT_CONTROL)
+				close(msg->fd); /* can only be used once */
+		}
+	}
+	if (cf->fd == -1) {
+		error = errno;
+		goto reply;
+	}
+
+	cf->event = bufferevent_new(cf->fd, NULL, client_write_callback,
+	    client_write_error_callback, cf);
+	bufferevent_enable(cf->event, EV_WRITE);
+	goto reply;
+
+reply:
+	reply.stream = msg->stream;
+	reply.error = error;
+	proc_send(client_peer, MSG_WRITE_READY, -1, &reply, sizeof reply);
+}
+
+/* Write to client file. */
+static void
+client_write_data(void *data, size_t datalen)
+{
+	struct msg_write_data	*msg = data;
+	struct client_file	 find, *cf;
+	size_t			 size = datalen - sizeof *msg;
+
+	if (datalen < sizeof *msg)
+		fatalx("bad MSG_WRITE size");
+	find.stream = msg->stream;
+	if ((cf = RB_FIND(client_files, &client_files, &find)) == NULL)
+		fatalx("unknown stream number");
+	log_debug("write %zu to file %d", size, cf->stream);
+
+	if (cf->event != NULL)
+		bufferevent_write(cf->event, msg + 1, size);
+}
+
+/* Close client file. */
+static void
+client_write_close(void *data, size_t datalen)
+{
+	struct msg_write_close	*msg = data;
+	struct client_file	 find, *cf;
+
+	if (datalen != sizeof *msg)
+		fatalx("bad MSG_WRITE_CLOSE size");
+	find.stream = msg->stream;
+	if ((cf = RB_FIND(client_files, &client_files, &find)) == NULL)
+		fatalx("unknown stream number");
+	log_debug("close file %d", cf->stream);
+
+	if (cf->event == NULL || EVBUFFER_LENGTH(cf->event->output) == 0) {
+		if (cf->event != NULL)
+			bufferevent_free(cf->event);
+		if (cf->fd != -1)
+			close(cf->fd);
+		RB_REMOVE(client_files, &client_files, cf);
+		file_free(cf);
+	}
+}
+
+/* File read callback. */
+static void
+client_read_callback(__unused struct bufferevent *bev, void *arg)
+{
+	struct client_file	*cf = arg;
+	void			*bdata;
+	size_t			 bsize;
+	struct msg_read_data	*msg;
+	size_t			 msglen;
+
+	msg = xmalloc(sizeof *msg);
+	for (;;) {
+		bdata = EVBUFFER_DATA(cf->event->input);
+		bsize = EVBUFFER_LENGTH(cf->event->input);
+
+		if (bsize == 0)
+			break;
+		if (bsize > MAX_IMSGSIZE - IMSG_HEADER_SIZE - sizeof *msg)
+			bsize = MAX_IMSGSIZE - IMSG_HEADER_SIZE - sizeof *msg;
+		log_debug("read %zu from file %d", bsize, cf->stream);
+
+		msglen = (sizeof *msg) + bsize;
+		msg = xrealloc(msg, msglen);
+		msg->stream = cf->stream;
+		memcpy(msg + 1, bdata, bsize);
+		proc_send(client_peer, MSG_READ, -1, msg, msglen);
+
+		evbuffer_drain(cf->event->input, bsize);
+	}
+	free(msg);
+}
+
+/* File read error callback. */
+static void
+client_read_error_callback(__unused struct bufferevent *bev,
+    __unused short what, void *arg)
+{
+	struct client_file	*cf = arg;
+	struct msg_read_done	 msg;
+
+	log_debug("read error file %d", cf->stream);
+
+	msg.stream = cf->stream;
+	msg.error = 0;
+	proc_send(client_peer, MSG_READ_DONE, -1, &msg, sizeof msg);
+
+	bufferevent_free(cf->event);
+	close(cf->fd);
+	RB_REMOVE(client_files, &client_files, cf);
+	file_free(cf);
+}
+
+/* Open read file. */
+static void
+client_read_open(void *data, size_t datalen)
+{
+	struct msg_read_open	*msg = data;
+	const char		*path;
+	struct msg_read_done	 reply;
+	struct client_file	 find, *cf;
+	const int		 flags = O_NONBLOCK|O_RDONLY;
+	int			 error = 0;
+
+	if (datalen < sizeof *msg)
+		fatalx("bad MSG_READ_OPEN size");
+	if (datalen == sizeof *msg)
+		path = "-";
+	else
+		path = (const char *)(msg + 1);
+	log_debug("open read file %d %s", msg->stream, path);
+
+	find.stream = msg->stream;
+	if ((cf = RB_FIND(client_files, &client_files, &find)) == NULL) {
+		cf = file_create(NULL, msg->stream, NULL, NULL);
+		RB_INSERT(client_files, &client_files, cf);
+	} else {
+		error = EBADF;
+		goto reply;
+	}
+	if (cf->closed) {
+		error = EBADF;
+		goto reply;
+	}
+
+	cf->fd = -1;
+	if (msg->fd == -1)
+		cf->fd = open(path, flags);
+	else {
+		if (msg->fd != STDIN_FILENO)
+			errno = EBADF;
+		else {
+			cf->fd = dup(msg->fd);
+			close(msg->fd); /* can only be used once */
+		}
+	}
+	if (cf->fd == -1) {
+		error = errno;
+		goto reply;
+	}
+
+	cf->event = bufferevent_new(cf->fd, client_read_callback, NULL,
+	    client_read_error_callback, cf);
+	bufferevent_enable(cf->event, EV_READ);
+	return;
+
+reply:
+	reply.stream = msg->stream;
+	reply.error = error;
+	proc_send(client_peer, MSG_READ_DONE, -1, &reply, sizeof reply);
 }
 
 /* Run command in shell; used for -c. */
@@ -555,12 +789,10 @@ client_dispatch(struct imsg *imsg, __unused void *arg)
 static void
 client_dispatch_wait(struct imsg *imsg)
 {
-	char			*data;
-	ssize_t			 datalen;
-	struct msg_stdout_data	 stdoutdata;
-	struct msg_stderr_data	 stderrdata;
-	int			 retval;
-	static int		 pledge_applied;
+	char		*data;
+	ssize_t		 datalen;
+	int		 retval;
+	static int	 pledge_applied;
 
 	/*
 	 * "sendfd" is no longer required once all of the identify messages
@@ -569,10 +801,12 @@ client_dispatch_wait(struct imsg *imsg)
 	 * get the first message from the server.
 	 */
 	if (!pledge_applied) {
-		if (pledge("stdio unix proc exec tty", NULL) != 0)
+		if (pledge(
+		    "stdio rpath wpath cpath unix proc exec tty",
+		    NULL) != 0)
 			fatal("pledge failed");
 		pledge_applied = 1;
-	};
+	}
 
 	data = imsg->data;
 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
@@ -586,38 +820,16 @@ client_dispatch_wait(struct imsg *imsg)
 			memcpy(&retval, data, sizeof retval);
 			client_exitval = retval;
 		}
-		proc_exit(client_proc);
+		client_exitflag = 1;
+		client_exit();
 		break;
 	case MSG_READY:
 		if (datalen != 0)
 			fatalx("bad MSG_READY size");
 
-		event_del(&client_stdin);
 		client_attached = 1;
 		proc_send(client_peer, MSG_RESIZE, -1, NULL, 0);
 		break;
-	case MSG_STDIN:
-		if (datalen != 0)
-			fatalx("bad MSG_STDIN size");
-
-		event_add(&client_stdin, NULL);
-		break;
-	case MSG_STDOUT:
-		if (datalen != sizeof stdoutdata)
-			fatalx("bad MSG_STDOUT size");
-		memcpy(&stdoutdata, data, sizeof stdoutdata);
-
-		client_write(STDOUT_FILENO, stdoutdata.data,
-		    stdoutdata.size);
-		break;
-	case MSG_STDERR:
-		if (datalen != sizeof stderrdata)
-			fatalx("bad MSG_STDERR size");
-		memcpy(&stderrdata, data, sizeof stderrdata);
-
-		client_write(STDERR_FILENO, stderrdata.data,
-		    stderrdata.size);
-		break;
 	case MSG_VERSION:
 		if (datalen != 0)
 			fatalx("bad MSG_VERSION size");
@@ -641,6 +853,24 @@ client_dispatch_wait(struct imsg *imsg)
 	case MSG_EXITED:
 		proc_exit(client_proc);
 		break;
+	case MSG_READ_OPEN:
+		client_read_open(data, datalen);
+		break;
+	case MSG_WRITE_OPEN:
+		client_write_open(data, datalen);
+		break;
+	case MSG_WRITE:
+		client_write_data(data, datalen);
+		break;
+	case MSG_WRITE_CLOSE:
+		client_write_close(data, datalen);
+		break;
+	case MSG_OLDSTDERR:
+	case MSG_OLDSTDIN:
+	case MSG_OLDSTDOUT:
+		fprintf(stderr, "server version is too old for client\n");
+		proc_exit(client_proc);
+		break;
 	}
 }
 

cmd-attach-session.c

@@ -127,6 +127,7 @@ cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
 		gettimeofday(&s->last_attached_time, NULL);
 		server_redraw_client(c);
 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
+		s->curw->window->latest = c;
 	} else {
 		if (server_client_open(c, &cause) != 0) {
 			cmdq_error(item, "open terminal failed: %s", cause);
@@ -159,6 +160,7 @@ cmd_attach_session(struct cmdq_item *item, const char *tflag, int dflag,
 		gettimeofday(&s->last_attached_time, NULL);
 		server_redraw_client(c);
 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
+		s->curw->window->latest = c;
 
 		if (~c->flags & CLIENT_CONTROL)
 			proc_send(c->peer, MSG_READY, -1, NULL, 0);

cmd-bind-key.c

@@ -33,8 +33,8 @@ const struct cmd_entry cmd_bind_key_entry = {
 	.name = "bind-key",
 	.alias = "bind",
 
-	.args = { "cnrT:", 2, -1 },
-	.usage = "[-cnr] [-T key-table] key "
+	.args = { "nrN:T:", 2, -1 },
+	.usage = "[-nr] [-T key-table] [-N note] key "
 	         "command [arguments]",
 
 	.flags = CMD_AFTERHOOK,
@@ -46,10 +46,10 @@ cmd_bind_key_exec(struct cmd *self, struct cmdq_item *item)
 {
 	struct args		 *args = self->args;
 	key_code		  key;
-	const char		 *tablename;
+	const char		 *tablename, *note;
 	struct cmd_parse_result	 *pr;
 	char			**argv = args->argv;
-	int			  argc = args->argc;
+	int			  argc = args->argc, repeat;
 
 	key = key_string_lookup_string(argv[0]);
 	if (key == KEYC_NONE || key == KEYC_UNKNOWN) {
@@ -63,6 +63,7 @@ cmd_bind_key_exec(struct cmd *self, struct cmdq_item *item)
 		tablename = "root";
 	else
 		tablename = "prefix";
+	repeat = args_has(args, 'r');
 
 	if (argc == 2)
 		pr = cmd_parse_from_string(argv[1], NULL);
@@ -79,6 +80,7 @@ cmd_bind_key_exec(struct cmd *self, struct cmdq_item *item)
 	case CMD_PARSE_SUCCESS:
 		break;
 	}
-	key_bindings_add(tablename, key, args_has(args, 'r'), pr->cmdlist);
+	note = args_get(args, 'N');
+	key_bindings_add(tablename, key, note, repeat, pr->cmdlist);
 	return (CMD_RETURN_NORMAL);
 }

cmd-break-pane.c

@@ -76,11 +76,12 @@ cmd_break_pane_exec(struct cmd *self, struct cmdq_item *item)
 	window_lost_pane(w, wp);
 	layout_close_pane(wp);
 
-	w = wp->window = window_create(w->sx, w->sy);
+	w = wp->window = window_create(w->sx, w->sy, w->xpixel, w->ypixel);
 	options_set_parent(wp->options, w->options);
 	wp->flags |= PANE_STYLECHANGED;
 	TAILQ_INSERT_HEAD(&w->panes, wp, entry);
 	w->active = wp;
+	w->latest = c;
 
 	if (!args_has(args, 'n')) {
 		name = default_window_name(w);

cmd-capture-pane.c

@@ -39,8 +39,8 @@ const struct cmd_entry cmd_capture_pane_entry = {
 	.name = "capture-pane",
 	.alias = "capturep",
 
-	.args = { "ab:CeE:JpPqS:t:", 0, 0 },
-	.usage = "[-aCeJpPq] " CMD_BUFFER_USAGE " [-E end-line] "
+	.args = { "ab:CeE:JNpPqS:t:", 0, 0 },
+	.usage = "[-aCeJNpPq] " CMD_BUFFER_USAGE " [-E end-line] "
 		 "[-S start-line] " CMD_TARGET_PANE_USAGE,
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -110,7 +110,7 @@ cmd_capture_pane_history(struct args *args, struct cmdq_item *item,
 	struct grid		*gd;
 	const struct grid_line	*gl;
 	struct grid_cell	*gc = NULL;
-	int			 n, with_codes, escape_c0, join_lines;
+	int			 n, with_codes, escape_c0, join_lines, no_trim;
 	u_int			 i, sx, top, bottom, tmp;
 	char			*cause, *buf, *line;
 	const char		*Sflag, *Eflag;
@@ -170,11 +170,12 @@ cmd_capture_pane_history(struct args *args, struct cmdq_item *item,
 	with_codes = args_has(args, 'e');
 	escape_c0 = args_has(args, 'C');
 	join_lines = args_has(args, 'J');
+	no_trim = args_has(args, 'N');
 
 	buf = NULL;
 	for (i = top; i <= bottom; i++) {
 		line = grid_string_cells(gd, 0, i, sx, &gc, with_codes,
-		    escape_c0, !join_lines);
+		    escape_c0, !join_lines && !no_trim);
 		linelen = strlen(line);
 
 		buf = cmd_capture_pane_append(buf, len, line, linelen);
@@ -192,7 +193,7 @@ static enum cmd_retval
 cmd_capture_pane_exec(struct cmd *self, struct cmdq_item *item)
 {
 	struct args		*args = self->args;
-	struct client		*c;
+	struct client		*c = item->client;
 	struct window_pane	*wp = item->target.wp;
 	char			*buf, *cause;
 	const char		*bufname;
@@ -213,18 +214,15 @@ cmd_capture_pane_exec(struct cmd *self, struct cmdq_item *item)
 		return (CMD_RETURN_ERROR);
 
 	if (args_has(args, 'p')) {
-		c = item->client;
-		if (c == NULL ||
-		    (c->session != NULL && !(c->flags & CLIENT_CONTROL))) {
-			cmdq_error(item, "can't write to stdout");
+		if (!file_can_print(c)) {
+			cmdq_error(item, "can't write output to client");
 			free(buf);
 			return (CMD_RETURN_ERROR);
 		}
-		evbuffer_add(c->stdout_data, buf, len);
-		free(buf);
+		file_print_buffer(c, buf, len);
 		if (args_has(args, 'P') && len > 0)
-		    evbuffer_add(c->stdout_data, "\n", 1);
-		server_client_push_stdout(c);
+			file_print(c, "\n");
+		free(buf);
 	} else {
 		bufname = NULL;
 		if (args_has(args, 'b'))

cmd-choose-tree.c

@@ -30,8 +30,8 @@ const struct cmd_entry cmd_choose_tree_entry = {
 	.name = "choose-tree",
 	.alias = NULL,
 
-	.args = { "F:Gf:NO:st:wZ", 0, 1 },
-	.usage = "[-GNsw] [-F format] [-f filter] [-O sort-order] "
+	.args = { "F:Gf:NO:rst:wZ", 0, 1 },
+	.usage = "[-GNrswZ] [-F format] [-f filter] [-O sort-order] "
 	         CMD_TARGET_PANE_USAGE " [template]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -44,8 +44,8 @@ const struct cmd_entry cmd_choose_client_entry = {
 	.name = "choose-client",
 	.alias = NULL,
 
-	.args = { "F:f:NO:t:Z", 0, 1 },
-	.usage = "[-N] [-F format] [-f filter] [-O sort-order] "
+	.args = { "F:f:NO:rt:Z", 0, 1 },
+	.usage = "[-NrZ] [-F format] [-f filter] [-O sort-order] "
 	         CMD_TARGET_PANE_USAGE " [template]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -58,8 +58,8 @@ const struct cmd_entry cmd_choose_buffer_entry = {
 	.name = "choose-buffer",
 	.alias = NULL,
 
-	.args = { "F:f:NO:t:Z", 0, 1 },
-	.usage = "[-N] [-F format] [-f filter] [-O sort-order] "
+	.args = { "F:f:NO:rt:Z", 0, 1 },
+	.usage = "[-NrZ] [-F format] [-f filter] [-O sort-order] "
 	         CMD_TARGET_PANE_USAGE " [template]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },

cmd-command-prompt.c

@@ -40,8 +40,8 @@ const struct cmd_entry cmd_command_prompt_entry = {
 	.name = "command-prompt",
 	.alias = NULL,
 
-	.args = { "1iI:Np:t:", 0, 1 },
-	.usage = "[-1Ni] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE " "
+	.args = { "1kiI:Np:t:", 0, 1 },
+	.usage = "[-1kiN] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE " "
 		 "[template]",
 
 	.flags = 0,
@@ -122,6 +122,8 @@ cmd_command_prompt_exec(struct cmd *self, struct cmdq_item *item)
 		cdata->flags |= PROMPT_NUMERIC;
 	else if (args_has(args, 'i'))
 		cdata->flags |= PROMPT_INCREMENTAL;
+	else if (args_has(args, 'k'))
+		cdata->flags |= PROMPT_KEY;
 	status_prompt_set(c, prompt, input, cmd_command_prompt_callback,
 	    cmd_command_prompt_free, cdata, cdata->flags);
 	free(prompt);

cmd-join-pane.c

@@ -20,6 +20,7 @@
 #include <sys/types.h>
 
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include "tmux.h"
@@ -34,8 +35,8 @@ const struct cmd_entry cmd_join_pane_entry = {
 	.name = "join-pane",
 	.alias = "joinp",
 
-	.args = { "bdhvp:l:s:t:", 0, 0 },
-	.usage = "[-bdhv] [-p percentage|-l size] " CMD_SRCDST_PANE_USAGE,
+	.args = { "bdfhvp:l:s:t:", 0, 0 },
+	.usage = "[-bdfhv] [-l size] " CMD_SRCDST_PANE_USAGE,
 
 	.source = { 's', CMD_FIND_PANE, CMD_FIND_DEFAULT_MARKED },
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -51,7 +52,7 @@ const struct cmd_entry cmd_move_pane_entry = {
 	.args = { "bdhvp:l:s:t:", 0, 0 },
 	.usage = "[-bdhv] [-p percentage|-l size] " CMD_SRCDST_PANE_USAGE,
 
-	.source = { 's', CMD_FIND_PANE, 0 },
+	.source = { 's', CMD_FIND_PANE, CMD_FIND_DEFAULT_MARKED },
 	.target = { 't', CMD_FIND_PANE, 0 },
 
 	.flags = 0,
@@ -67,11 +68,13 @@ cmd_join_pane_exec(struct cmd *self, struct cmdq_item *item)
 	struct winlink		*src_wl, *dst_wl;
 	struct window		*src_w, *dst_w;
 	struct window_pane	*src_wp, *dst_wp;
-	char			*cause;
-	int			 size, percentage, dst_idx;
+	char			*cause, *copy;
+	const char		*errstr, *p;
+	size_t			 plen;
+	int			 size, percentage, dst_idx, not_same_window;
+	int			 flags;
 	enum layout_type	 type;
 	struct layout_cell	*lc;
-	int			 not_same_window, flags;
 
 	if (self->entry == &cmd_join_pane_entry)
 		not_same_window = 1;
@@ -104,12 +107,28 @@ cmd_join_pane_exec(struct cmd *self, struct cmdq_item *item)
 		type = LAYOUT_LEFTRIGHT;
 
 	size = -1;
-	if (args_has(args, 'l')) {
-		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
-		if (cause != NULL) {
-			cmdq_error(item, "size %s", cause);
-			free(cause);
-			return (CMD_RETURN_ERROR);
+	if ((p = args_get(args, 'l')) != NULL) {
+		plen = strlen(p);
+		if (p[plen - 1] == '%') {
+			copy = xstrdup(p);
+			copy[plen - 1] = '\0';
+			percentage = strtonum(copy, 0, INT_MAX, &errstr);
+			free(copy);
+			if (errstr != NULL) {
+				cmdq_error(item, "percentage %s", errstr);
+				return (CMD_RETURN_ERROR);
+			}
+			if (type == LAYOUT_TOPBOTTOM)
+				size = (dst_wp->sy * percentage) / 100;
+			else
+				size = (dst_wp->sx * percentage) / 100;
+		} else {
+			size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
+			if (cause != NULL) {
+				cmdq_error(item, "size %s", cause);
+				free(cause);
+				return (CMD_RETURN_ERROR);
+			}
 		}
 	} else if (args_has(args, 'p')) {
 		percentage = args_strtonum(args, 'p', 0, 100, &cause);
@@ -123,10 +142,13 @@ cmd_join_pane_exec(struct cmd *self, struct cmdq_item *item)
 		else
 			size = (dst_wp->sx * percentage) / 100;
 	}
+
+	flags = 0;
 	if (args_has(args, 'b'))
-		flags = SPAWN_BEFORE;
-	else
-		flags = 0;
+		flags |= SPAWN_BEFORE;
+	if (args_has(args, 'f'))
+		flags |= SPAWN_FULLSIZE;
+
 	lc = layout_split_pane(dst_wp, type, size, flags);
 	if (lc == NULL) {
 		cmdq_error(item, "create pane failed: pane too small");

cmd-kill-pane.c

@@ -37,7 +37,7 @@ const struct cmd_entry cmd_kill_pane_entry = {
 
 	.target = { 't', CMD_FIND_PANE, 0 },
 
-	.flags = 0,
+	.flags = CMD_AFTERHOOK,
 	.exec = cmd_kill_pane_exec
 };
 

cmd-list-keys.c

@@ -36,8 +36,8 @@ const struct cmd_entry cmd_list_keys_entry = {
 	.name = "list-keys",
 	.alias = "lsk",
 
-	.args = { "T:", 0, 0 },
-	.usage = "[-T key-table]",
+	.args = { "1NP:T:", 0, 1 },
+	.usage = "[-1N] [-P prefix-string] [-T key-table] [key]",
 
 	.flags = CMD_STARTSERVER|CMD_AFTERHOOK,
 	.exec = cmd_list_keys_exec
@@ -54,6 +54,88 @@ const struct cmd_entry cmd_list_commands_entry = {
 	.exec = cmd_list_keys_exec
 };
 
+static u_int
+cmd_list_keys_get_width(const char *tablename, key_code only)
+{
+	struct key_table	*table;
+	struct key_binding	*bd;
+	u_int			 width, keywidth = 0;
+
+	table = key_bindings_get_table(tablename, 0);
+	if (table == NULL)
+		return (0);
+	bd = key_bindings_first(table);
+	while (bd != NULL) {
+		if ((only != KEYC_UNKNOWN && bd->key != only) ||
+		    KEYC_IS_MOUSE(bd->key) ||
+		    bd->note == NULL) {
+			bd = key_bindings_next(table, bd);
+			continue;
+		}
+		width = utf8_cstrwidth(key_string_lookup_key(bd->key));
+		if (width > keywidth)
+			keywidth = width;
+
+		bd = key_bindings_next(table, bd);
+	}
+	return (keywidth);
+}
+
+static int
+cmd_list_keys_print_notes(struct cmdq_item *item, struct args *args,
+    const char *tablename, u_int keywidth, key_code only, const char *prefix)
+{
+	struct client		*c = cmd_find_client(item, NULL, 1);
+	struct key_table	*table;
+	struct key_binding	*bd;
+	const char		*key;
+	char			*tmp;
+	int	                 found = 0;
+
+	table = key_bindings_get_table(tablename, 0);
+	if (table == NULL)
+		return (0);
+	bd = key_bindings_first(table);
+	while (bd != NULL) {
+		if ((only != KEYC_UNKNOWN && bd->key != only) ||
+		    KEYC_IS_MOUSE(bd->key) ||
+		    bd->note == NULL) {
+			bd = key_bindings_next(table, bd);
+			continue;
+		}
+		found = 1;
+		key = key_string_lookup_key(bd->key);
+
+		tmp = utf8_padcstr(key, keywidth + 1);
+		if (args_has(args, '1') && c != NULL)
+			status_message_set(c, "%s%s%s", prefix, tmp, bd->note);
+		else
+			cmdq_print(item, "%s%s%s", prefix, tmp, bd->note);
+		free(tmp);
+
+		if (args_has(args, '1'))
+			break;
+		bd = key_bindings_next(table, bd);
+	}
+	return (found);
+}
+
+static char *
+cmd_list_keys_get_prefix(struct args *args, key_code *prefix)
+{
+	char	*s;
+
+	*prefix = options_get_number(global_s_options, "prefix");
+	if (!args_has(args, 'P')) {
+		if (*prefix != KEYC_NONE)
+			xasprintf(&s, "%s ", key_string_lookup_key(*prefix));
+		else
+			s = xstrdup("");
+	} else
+		s = xstrdup(args_get(args, 'P'));
+	return (s);
+}
+
 static enum cmd_retval
 cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
 {
@@ -61,19 +143,63 @@ cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
 	struct key_table	*table;
 	struct key_binding	*bd;
 	const char		*tablename, *r;
-	char			*key, *cp, *tmp;
-	int			 repeat, width, tablewidth, keywidth;
+	char			*key, *cp, *tmp, *start, *empty;
+	key_code		 prefix, only = KEYC_UNKNOWN;
+	int			 repeat, width, tablewidth, keywidth, found = 0;
 	size_t			 tmpsize, tmpused, cplen;
 
 	if (self->entry == &cmd_list_commands_entry)
 		return (cmd_list_keys_commands(self, item));
 
+	if (args->argc != 0) {
+		only = key_string_lookup_string(args->argv[0]);
+		if (only == KEYC_UNKNOWN) {
+			cmdq_error(item, "invalid key: %s", args->argv[0]);
+			return (CMD_RETURN_ERROR);
+		}
+	}
+
 	tablename = args_get(args, 'T');
 	if (tablename != NULL && key_bindings_get_table(tablename, 0) == NULL) {
 		cmdq_error(item, "table %s doesn't exist", tablename);
 		return (CMD_RETURN_ERROR);
 	}
 
+	if (args_has(args, 'N')) {
+		if (tablename == NULL) {
+			start = cmd_list_keys_get_prefix(args, &prefix);
+			keywidth = cmd_list_keys_get_width("root", only);
+			if (prefix != KEYC_NONE) {
+				width = cmd_list_keys_get_width("prefix", only);
+				if (width == 0)
+					prefix = KEYC_NONE;
+				else if (width > keywidth)
+					keywidth = width;
+			}
+			empty = utf8_padcstr("", utf8_cstrwidth(start));
+
+			found = cmd_list_keys_print_notes(item, args, "root",
+			    keywidth, only, empty);
+			if (prefix != KEYC_NONE) {
+				if (cmd_list_keys_print_notes(item, args,
+				    "prefix", keywidth, only, start))
+					found = 1;
+			}
+			free(empty);
+		} else {
+			if (args_has(args, 'P'))
+				start = xstrdup(args_get(args, 'P'));
+			else
+				start = xstrdup("");
+			keywidth = cmd_list_keys_get_width(tablename, only);
+			found = cmd_list_keys_print_notes(item, args, tablename,
+			    keywidth, only, start);
+
+		}
+		free(start);
+		goto out;
+	}
+
 	repeat = 0;
 	tablewidth = keywidth = 0;
 	table = key_bindings_first_table ();
@@ -84,6 +210,10 @@ cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
 		}
 		bd = key_bindings_first(table);
 		while (bd != NULL) {
+			if (only != KEYC_UNKNOWN && bd->key != only) {
+				bd = key_bindings_next(table, bd);
+				continue;
+			}
 			key = args_escape(key_string_lookup_key(bd->key));
 
 			if (bd->flags & KEY_BINDING_REPEAT)
@@ -113,6 +243,11 @@ cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
 		}
 		bd = key_bindings_first(table);
 		while (bd != NULL) {
+			if (only != KEYC_UNKNOWN && bd->key != only) {
+				bd = key_bindings_next(table, bd);
+				continue;
+			}
+			found = 1;
 			key = args_escape(key_string_lookup_key(bd->key));
 
 			if (!repeat)
@@ -162,13 +297,18 @@ cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
 
 	free(tmp);
 
+out:
+	if (only != KEYC_UNKNOWN && !found) {
+		cmdq_error(item, "unknown key: %s", args->argv[0]);
+		return (CMD_RETURN_ERROR);
+	}
 	return (CMD_RETURN_NORMAL);
 }
 
 static enum cmd_retval
 cmd_list_keys_commands(struct cmd *self, struct cmdq_item *item)
 {
-	struct args		*args = self->args;
+	struct args		 *args = self->args;
 	const struct cmd_entry	**entryp;
 	const struct cmd_entry	 *entry;
 	struct format_tree	 *ft;

cmd-load-buffer.c

@@ -33,8 +33,6 @@
 
 static enum cmd_retval	cmd_load_buffer_exec(struct cmd *, struct cmdq_item *);
 
-static void		cmd_load_buffer_callback(struct client *, int, void *);
-
 const struct cmd_entry cmd_load_buffer_entry = {
 	.name = "load-buffer",
 	.alias = "loadb",
@@ -48,9 +46,40 @@ const struct cmd_entry cmd_load_buffer_entry = {
 
 struct cmd_load_buffer_data {
 	struct cmdq_item	*item;
-	char			*bufname;
+	char			*name;
 };
 
+static void
+cmd_load_buffer_done(__unused struct client *c, const char *path, int error,
+    int closed, struct evbuffer *buffer, void *data)
+{
+	struct cmd_load_buffer_data	*cdata = data;
+	struct cmdq_item		*item = cdata->item;
+	void				*bdata = EVBUFFER_DATA(buffer);
+	size_t				 bsize = EVBUFFER_LENGTH(buffer);
+	void				*copy;
+	char				*cause;
+
+	if (!closed)
+		return;
+
+	if (error != 0)
+		cmdq_error(item, "%s: %s", path, strerror(error));
+	else if (bsize != 0) {
+		copy = xmalloc(bsize);
+		memcpy(copy, bdata, bsize);
+		if (paste_set(copy, bsize, cdata->name, &cause) != 0) {
+			cmdq_error(item, "%s", cause);
+			free(cause);
+			free(copy);
+		}
+	}
+	cmdq_continue(item);
+
+	free(cdata->name);
+	free(cdata);
+}
+
 static enum cmd_retval
 cmd_load_buffer_exec(struct cmd *self, struct cmdq_item *item)
 {
@@ -60,124 +89,19 @@ cmd_load_buffer_exec(struct cmd *self, struct cmdq_item *item)
 	struct session			*s = item->target.s;
 	struct winlink			*wl = item->target.wl;
 	struct window_pane		*wp = item->target.wp;
-	FILE				*f;
-	const char			*bufname;
-	char				*pdata = NULL, *new_pdata, *cause;
-	char				*path, *file;
-	size_t				 psize;
-	int				 ch, error;
+	const char			*bufname = args_get(args, 'b');
+	char				*path;
 
-	bufname = NULL;
-	if (args_has(args, 'b'))
-		bufname = args_get(args, 'b');
+	cdata = xmalloc(sizeof *cdata);
+	cdata->item = item;
+	if (bufname != NULL)
+		cdata->name = xstrdup(bufname);
+	else
+		cdata->name = NULL;
 
 	path = format_single(item, args->argv[0], c, s, wl, wp);
-	if (strcmp(path, "-") == 0) {
-		free(path);
-		c = item->client;
-
-		cdata = xcalloc(1, sizeof *cdata);
-		cdata->item = item;
-
-		if (bufname != NULL)
-			cdata->bufname = xstrdup(bufname);
-
-		error = server_set_stdin_callback(c, cmd_load_buffer_callback,
-		    cdata, &cause);
-		if (error != 0) {
-			cmdq_error(item, "-: %s", cause);
-			free(cause);
-			free(cdata);
-			return (CMD_RETURN_ERROR);
-		}
-		return (CMD_RETURN_WAIT);
-	}
-
-	file = server_client_get_path(item->client, path);
+	file_read(item->client, path, cmd_load_buffer_done, cdata);
 	free(path);
 
-	f = fopen(file, "rb");
-	if (f == NULL) {
-		cmdq_error(item, "%s: %s", file, strerror(errno));
-		goto error;
-	}
-
-	pdata = NULL;
-	psize = 0;
-	while ((ch = getc(f)) != EOF) {
-		/* Do not let the server die due to memory exhaustion. */
-		if ((new_pdata = realloc(pdata, psize + 2)) == NULL) {
-			cmdq_error(item, "realloc error: %s", strerror(errno));
-			goto error;
-		}
-		pdata = new_pdata;
-		pdata[psize++] = ch;
-	}
-	if (ferror(f)) {
-		cmdq_error(item, "%s: read error", file);
-		goto error;
-	}
-	if (pdata != NULL)
-		pdata[psize] = '\0';
-
-	fclose(f);
-	free(file);
-
-	if (paste_set(pdata, psize, bufname, &cause) != 0) {
-		cmdq_error(item, "%s", cause);
-		free(pdata);
-		free(cause);
-		return (CMD_RETURN_ERROR);
-	}
-
-	return (CMD_RETURN_NORMAL);
-
-error:
-	free(pdata);
-	if (f != NULL)
-		fclose(f);
-	free(file);
-	return (CMD_RETURN_ERROR);
-}
-
-static void
-cmd_load_buffer_callback(struct client *c, int closed, void *data)
-{
-	struct cmd_load_buffer_data	*cdata = data;
-	char				*pdata, *cause, *saved;
-	size_t				 psize;
-
-	if (!closed)
-		return;
-	c->stdin_callback = NULL;
-
-	server_client_unref(c);
-	if (c->flags & CLIENT_DEAD)
-		goto out;
-
-	psize = EVBUFFER_LENGTH(c->stdin_data);
-	if (psize == 0 || (pdata = malloc(psize + 1)) == NULL)
-		goto out;
-
-	memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize);
-	pdata[psize] = '\0';
-	evbuffer_drain(c->stdin_data, psize);
-
-	if (paste_set(pdata, psize, cdata->bufname, &cause) != 0) {
-		/* No context so can't use server_client_msg_error. */
-		if (~c->flags & CLIENT_UTF8) {
-			saved = cause;
-			cause = utf8_sanitize(saved);
-			free(saved);
-		}
-		evbuffer_add_printf(c->stderr_data, "%s", cause);
-		server_client_push_stderr(c);
-		free(pdata);
-		free(cause);
-	}
-out:
-	cmdq_continue(cdata->item);
-
-	free(cdata->bufname);
-	free(cdata);
+	return (CMD_RETURN_WAIT);
 }

cmd-new-session.c

@@ -94,26 +94,31 @@ cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 		return (CMD_RETURN_ERROR);
 	}
 
-	if (args_has(args, 's')) {
-		newname = format_single(item, args_get(args, 's'), c, NULL,
-		    NULL, NULL);
+	tmp = args_get(args, 's');
+	if (tmp != NULL) {
+		newname = format_single(item, tmp, c, NULL, NULL, NULL);
 		if (!session_check_name(newname)) {
 			cmdq_error(item, "bad session name: %s", newname);
 			goto fail;
 		}
-		if ((as = session_find(newname)) != NULL) {
-			if (args_has(args, 'A')) {
-				retval = cmd_attach_session(item,
-				    newname, args_has(args, 'D'),
-				    args_has(args, 'X'), 0, NULL,
-				    args_has(args, 'E'));
-				free(newname);
-				return (retval);
-			}
-			cmdq_error(item, "duplicate session: %s", newname);
-			goto fail;
+	}
+	if (args_has(args, 'A')) {
+		if (newname != NULL)
+			as = session_find(newname);
+		else
+			as = item->target.s;
+		if (as != NULL) {
+			retval = cmd_attach_session(item, as->name,
+			    args_has(args, 'D'), args_has(args, 'X'), 0, NULL,
+			    args_has(args, 'E'));
+			free(newname);
+			return (retval);
 		}
 	}
+	if (newname != NULL && session_find(newname) != NULL) {
+		cmdq_error(item, "duplicate session: %s", newname);
+		goto fail;
+	}
 
 	/* Is this going to be part of a session group? */
 	group = args_get(args, 't');
@@ -259,6 +264,7 @@ cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 	memset(&sc, 0, sizeof sc);
 	sc.item = item;
 	sc.s = s;
+	sc.c = c;
 
 	sc.name = args_get(args, 'n');
 	sc.argc = args->argc;

cmd-new-window.c

@@ -72,6 +72,7 @@ cmd_new_window_exec(struct cmd *self, struct cmdq_item *item)
 	memset(&sc, 0, sizeof sc);
 	sc.item = item;
 	sc.s = s;
+	sc.c = c;
 
 	sc.name = args_get(args, 'n');
 	sc.argc = args->argc;

cmd-parse.y

@@ -133,7 +133,12 @@ statements	: statement '\n'
 			free($2);
 		}
 
-statement	: condition
+statement	: /* empty */
+		{
+			$$ = xmalloc (sizeof *$$);
+			TAILQ_INIT($$);
+		}
+		| condition
 		{
 			struct cmd_parse_state	*ps = &parse_state;
 
@@ -144,11 +149,6 @@ statement	: condition
 				cmd_parse_free_commands($1);
 			}
 		}
-		| assignment
-		{
-			$$ = xmalloc (sizeof *$$);
-			TAILQ_INIT($$);
-		}
 		| commands
 		{
 			struct cmd_parse_state	*ps = &parse_state;
@@ -176,26 +176,28 @@ expanded	: format
 			struct cmd_parse_input	*pi = ps->input;
 			struct format_tree	*ft;
 			struct client		*c = pi->c;
-			struct cmd_find_state	*fs;
+			struct cmd_find_state	*fsp;
+			struct cmd_find_state	 fs;
 			int			 flags = FORMAT_NOJOBS;
 
 			if (cmd_find_valid_state(&pi->fs))
-				fs = &pi->fs;
-			else
-				fs = NULL;
+				fsp = &pi->fs;
+			else {
+				cmd_find_from_client(&fs, c, 0);
+				fsp = &fs;
+			}
 			ft = format_create(NULL, pi->item, FORMAT_NONE, flags);
-			if (fs != NULL)
-				format_defaults(ft, c, fs->s, fs->wl, fs->wp);
-			else
-				format_defaults(ft, c, NULL, NULL, NULL);
+			format_defaults(ft, c, fsp->s, fsp->wl, fsp->wp);
 
 			$$ = format_expand(ft, $1);
 			format_free(ft);
 			free($1);
 		}
 
-assignment	: /* empty */
-		| EQUALS
+optional_assignment	: /* empty */
+			| assignment
+
+assignment	: EQUALS
 		{
 			struct cmd_parse_state	*ps = &parse_state;
 			int			 flags = ps->input->flags;
@@ -339,7 +341,8 @@ commands	: command
 			struct cmd_parse_state	*ps = &parse_state;
 
 			$$ = cmd_parse_new_commands();
-			if (ps->scope == NULL || ps->scope->flag)
+			if ($1->name != NULL &&
+			    (ps->scope == NULL || ps->scope->flag))
 				TAILQ_INSERT_TAIL($$, $1, entry);
 			else
 				cmd_parse_free_command($1);
@@ -358,7 +361,8 @@ commands	: command
 		{
 			struct cmd_parse_state	*ps = &parse_state;
 
-			if (ps->scope == NULL || ps->scope->flag) {
+			if ($3->name != NULL &&
+			    (ps->scope == NULL || ps->scope->flag)) {
 				$$ = $1;
 				TAILQ_INSERT_TAIL($$, $3, entry);
 			} else {
@@ -372,7 +376,15 @@ commands	: command
 			$$ = $1;
 		}
 
-command		: assignment TOKEN
+command		: assignment
+		{
+			struct cmd_parse_state	*ps = &parse_state;
+
+			$$ = xcalloc(1, sizeof *$$);
+			$$->name = NULL;
+			$$->line = ps->input->line;
+		}
+		| optional_assignment TOKEN
 		{
 			struct cmd_parse_state	*ps = &parse_state;
 
@@ -381,7 +393,7 @@ command		: assignment TOKEN
 			$$->line = ps->input->line;
 
 		}
-		| assignment TOKEN arguments
+		| optional_assignment TOKEN arguments
 		{
 			struct cmd_parse_state	*ps = &parse_state;
 
@@ -696,6 +708,7 @@ cmd_parse_build_commands(struct cmd_parse_commands *cmds,
 			pr.status = CMD_PARSE_ERROR;
 			pr.error = cmd_parse_get_error(pi->file, line, cause);
 			free(cause);
+			cmd_list_free(cmdlist);
 			goto out;
 		}
 		cmd_list_append(cmdlist, add);
@@ -744,6 +757,12 @@ cmd_parse_from_file(FILE *f, struct cmd_parse_input *pi)
 
 struct cmd_parse_result *
 cmd_parse_from_string(const char *s, struct cmd_parse_input *pi)
+{
+	return (cmd_parse_from_buffer(s, strlen(s), pi));
+}
+
+struct cmd_parse_result *
+cmd_parse_from_buffer(const void *buf, size_t len, struct cmd_parse_input *pi)
 {
 	static struct cmd_parse_result	 pr;
 	struct cmd_parse_input		 input;
@@ -756,14 +775,14 @@ cmd_parse_from_string(const char *s, struct cmd_parse_input *pi)
 	}
 	memset(&pr, 0, sizeof pr);
 
-	if (*s == '\0') {
+	if (len == 0) {
 		pr.status = CMD_PARSE_EMPTY;
 		pr.cmdlist = NULL;
 		pr.error = NULL;
 		return (&pr);
 	}
 
-	cmds = cmd_parse_do_buffer(s, strlen(s), pi, &cause);
+	cmds = cmd_parse_do_buffer(buf, len, pi, &cause);
 	if (cmds == NULL) {
 		pr.status = CMD_PARSE_ERROR;
 		pr.error = cause;

cmd-queue.c

@@ -53,12 +53,16 @@ cmdq_get(struct client *c)
 }
 
 /* Append an item. */
-void
+struct cmdq_item *
 cmdq_append(struct client *c, struct cmdq_item *item)
 {
 	struct cmdq_list	*queue = cmdq_get(c);
 	struct cmdq_item	*next;
 
+	TAILQ_FOREACH(next, queue, entry) {
+		log_debug("%s %s: queue %s (%u)", __func__, cmdq_name(c),
+		    next->name, next->group);
+	}
 	do {
 		next = item->next;
 		item->next = NULL;
@@ -73,16 +77,21 @@ cmdq_append(struct client *c, struct cmdq_item *item)
 
 		item = next;
 	} while (item != NULL);
+	return (TAILQ_LAST(queue, cmdq_list));
 }
 
 /* Insert an item. */
-void
+struct cmdq_item *
 cmdq_insert_after(struct cmdq_item *after, struct cmdq_item *item)
 {
 	struct client		*c = after->client;
 	struct cmdq_list	*queue = after->queue;
 	struct cmdq_item	*next;
 
+	TAILQ_FOREACH(next, queue, entry) {
+		log_debug("%s %s: queue %s (%u)", __func__, cmdq_name(c),
+		    next->name, next->group);
+	}
 	do {
 		next = item->next;
 		item->next = after->next;
@@ -100,9 +109,9 @@ cmdq_insert_after(struct cmdq_item *after, struct cmdq_item *item)
 		after = item;
 		item = next;
 	} while (item != NULL);
+	return (after);
 }
 
-
 /* Insert a hook. */
 void
 cmdq_insert_hook(struct session *s, struct cmdq_item *item,
@@ -144,11 +153,10 @@ cmdq_insert_hook(struct session *s, struct cmdq_item *item,
 
 		new_item = cmdq_get_command(cmdlist, fs, NULL, CMDQ_NOHOOKS);
 		cmdq_format(new_item, "hook", "%s", name);
-		if (item != NULL) {
-			cmdq_insert_after(item, new_item);
-			item = new_item;
-		} else
-			cmdq_append(NULL, new_item);
+		if (item != NULL)
+			item = cmdq_insert_after(item, new_item);
+		else
+			item = cmdq_append(NULL, new_item);
 
 		a = options_array_next(a);
 	}
@@ -476,13 +484,11 @@ void
 cmdq_guard(struct cmdq_item *item, const char *guard, int flags)
 {
 	struct client	*c = item->client;
+	long		 t = item->time;
+	u_int		 number = item->number;
 
-	if (c == NULL || !(c->flags & CLIENT_CONTROL))
-		return;
-
-	evbuffer_add_printf(c->stdout_data, "%%%s %ld %u %d\n", guard,
-	    (long)item->time, item->number, flags);
-	server_client_push_stdout(c);
+	if (c != NULL && (c->flags & CLIENT_CONTROL))
+		file_print(c, "%%%s %ld %u %d\n", guard, t, number, flags);
 }
 
 /* Show message from command. */
@@ -496,29 +502,29 @@ cmdq_print(struct cmdq_item *item, const char *fmt, ...)
 	char				*tmp, *msg;
 
 	va_start(ap, fmt);
+	xvasprintf(&msg, fmt, ap);
+	va_end(ap);
+
+	log_debug("%s: %s", __func__, msg);
 
 	if (c == NULL)
 		/* nothing */;
 	else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
 		if (~c->flags & CLIENT_UTF8) {
-			xvasprintf(&tmp, fmt, ap);
+			tmp = msg;
 			msg = utf8_sanitize(tmp);
 			free(tmp);
-			evbuffer_add(c->stdout_data, msg, strlen(msg));
-			free(msg);
-		} else
-			evbuffer_add_vprintf(c->stdout_data, fmt, ap);
-		evbuffer_add(c->stdout_data, "\n", 1);
-		server_client_push_stdout(c);
+		}
+		file_print(c, "%s\n", msg);
 	} else {
 		wp = c->session->curw->window->active;
 		wme = TAILQ_FIRST(&wp->modes);
 		if (wme == NULL || wme->mode != &window_view_mode)
 			window_pane_set_mode(wp, &window_view_mode, NULL, NULL);
-		window_copy_vadd(wp, fmt, ap);
+		window_copy_add(wp, "%s", msg);
 	}
 
-	va_end(ap);
+	free(msg);
 }
 
 /* Show error from command. */
@@ -529,11 +535,10 @@ cmdq_error(struct cmdq_item *item, const char *fmt, ...)
 	struct cmd	*cmd = item->cmd;
 	va_list		 ap;
 	char		*msg;
-	size_t		 msglen;
 	char		*tmp;
 
 	va_start(ap, fmt);
-	msglen = xvasprintf(&msg, fmt, ap);
+	xvasprintf(&msg, fmt, ap);
 	va_end(ap);
 
 	log_debug("%s: %s", __func__, msg);
@@ -545,11 +550,11 @@ cmdq_error(struct cmdq_item *item, const char *fmt, ...)
 			tmp = msg;
 			msg = utf8_sanitize(tmp);
 			free(tmp);
-			msglen = strlen(msg);
 		}
-		evbuffer_add(c->stderr_data, msg, msglen);
-		evbuffer_add(c->stderr_data, "\n", 1);
-		server_client_push_stderr(c);
+		if (c->flags & CLIENT_CONTROL)
+			file_print(c, "%s\n", msg);
+		else
+			file_error(c, "%s\n", msg);
 		c->retval = 1;
 	} else {
 		*msg = toupper((u_char) *msg);

cmd-refresh-client.c

@@ -130,7 +130,7 @@ cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
 				cmdq_error(item, "size too small or too big");
 				return (CMD_RETURN_ERROR);
 			}
-			tty_set_size(&c->tty, x, y);
+			tty_set_size(&c->tty, x, y, 0, 0);
 			c->flags |= CLIENT_SIZECHANGED;
 			recalculate_sizes();
 		}

cmd-resize-pane.c

@@ -19,6 +19,7 @@
 #include <sys/types.h>
 
 #include <stdlib.h>
+#include <string.h>
 
 #include "tmux.h"
 
@@ -55,10 +56,11 @@ cmd_resize_pane_exec(struct cmd *self, struct cmdq_item *item)
 	struct window		*w = wl->window;
 	struct client		*c = item->client;
 	struct session		*s = item->target.s;
-	const char	       	*errstr;
-	char			*cause;
+	const char	       	*errstr, *p;
+	char			*cause, *copy;
 	u_int			 adjust;
-	int			 x, y;
+	int			 x, y, percentage;
+	size_t			 plen;
 
 	if (args_has(args, 'M')) {
 		if (cmd_mouse_window(&shared->mouse, &s) == NULL)
@@ -91,21 +93,58 @@ cmd_resize_pane_exec(struct cmd *self, struct cmdq_item *item)
 		}
 	}
 
-	if (args_has(args, 'x')) {
-		x = args_strtonum(args, 'x', PANE_MINIMUM, INT_MAX, &cause);
-		if (cause != NULL) {
-			cmdq_error(item, "width %s", cause);
-			free(cause);
-			return (CMD_RETURN_ERROR);
+	if ((p = args_get(args, 'x')) != NULL) {
+		plen = strlen(p);
+		if (p[plen - 1] == '%') {
+			copy = xstrdup(p);
+			copy[plen - 1] = '\0';
+			percentage = strtonum(copy, 0, INT_MAX, &errstr);
+			free(copy);
+			if (errstr != NULL) {
+				cmdq_error(item, "width %s", errstr);
+				return (CMD_RETURN_ERROR);
+			}
+			x = (w->sx * percentage) / 100;
+			if (x < PANE_MINIMUM)
+				x = PANE_MINIMUM;
+			if (x > INT_MAX)
+				x = INT_MAX;
+		} else {
+			x = args_strtonum(args, 'x', PANE_MINIMUM, INT_MAX,
+			    &cause);
+			if (cause != NULL) {
+				cmdq_error(item, "width %s", cause);
+				free(cause);
+				return (CMD_RETURN_ERROR);
+			}
 		}
 		layout_resize_pane_to(wp, LAYOUT_LEFTRIGHT, x);
 	}
-	if (args_has(args, 'y')) {
-		y = args_strtonum(args, 'y', PANE_MINIMUM, INT_MAX, &cause);
-		if (cause != NULL) {
-			cmdq_error(item, "height %s", cause);
-			free(cause);
-			return (CMD_RETURN_ERROR);
+	if ((p = args_get(args, 'y')) != NULL) {
+		plen = strlen(p);
+		if (p[plen - 1] == '%') {
+			copy = xstrdup(p);
+			copy[plen - 1] = '\0';
+			percentage = strtonum(copy, 0, INT_MAX, &errstr);
+			free(copy);
+			if (errstr != NULL) {
+				cmdq_error(item, "height %s", errstr);
+				return (CMD_RETURN_ERROR);
+			}
+			y = (w->sy * percentage) / 100;
+			if (y < PANE_MINIMUM)
+				y = PANE_MINIMUM;
+			if (y > INT_MAX)
+				y = INT_MAX;
+		}
+		else {
+			y = args_strtonum(args, 'y', PANE_MINIMUM, INT_MAX,
+			    &cause);
+			if (cause != NULL) {
+				cmdq_error(item, "height %s", cause);
+				free(cause);
+				return (CMD_RETURN_ERROR);
+			}
 		}
 		layout_resize_pane_to(wp, LAYOUT_TOPBOTTOM, y);
 	}

cmd-resize-window.c

@@ -53,6 +53,7 @@ cmd_resize_window_exec(struct cmd *self, struct cmdq_item *item)
 	const char	       	*errstr;
 	char			*cause;
 	u_int			 adjust, sx, sy;
+	int			 xpixel = -1, ypixel = -1;
 
 	if (args->argc == 0)
 		adjust = 1;
@@ -97,13 +98,16 @@ cmd_resize_window_exec(struct cmd *self, struct cmdq_item *item)
 	} else if (args_has(args, 'D'))
 		sy += adjust;
 
-	if (args_has(args, 'A'))
-		default_window_size(s, w, &sx, &sy, WINDOW_SIZE_LARGEST);
-	else if (args_has(args, 'a'))
-		default_window_size(s, w, &sx, &sy, WINDOW_SIZE_SMALLEST);
+	if (args_has(args, 'A')) {
+		default_window_size(NULL, s, w, &sx, &sy, &xpixel, &ypixel,
+		    WINDOW_SIZE_LARGEST);
+	} else if (args_has(args, 'a')) {
+		default_window_size(NULL, s, w, &sx, &sy, &xpixel, &ypixel,
+		    WINDOW_SIZE_SMALLEST);
+	}
 
 	options_set_number(w->options, "window-size", WINDOW_SIZE_MANUAL);
-	resize_window(w, sx, sy);
+	resize_window(w, sx, sy, xpixel, ypixel);
 
 	return (CMD_RETURN_NORMAL);
 }

cmd-respawn-window.c

@@ -59,6 +59,7 @@ cmd_respawn_window_exec(struct cmd *self, struct cmdq_item *item)
 	sc.item = item;
 	sc.s = s;
 	sc.wl = wl;
+	sc.c = cmd_find_client(item, NULL, 1);
 
 	sc.name = NULL;
 	sc.argc = args->argc;

cmd-rotate-window.c

@@ -31,8 +31,8 @@ const struct cmd_entry cmd_rotate_window_entry = {
 	.name = "rotate-window",
 	.alias = "rotatew",
 
-	.args = { "Dt:U", 0, 0 },
-	.usage = "[-DU] " CMD_TARGET_WINDOW_USAGE,
+	.args = { "Dt:UZ", 0, 0 },
+	.usage = "[-DUZ] " CMD_TARGET_WINDOW_USAGE,
 
 	.target = { 't', CMD_FIND_WINDOW, 0 },
 
@@ -50,7 +50,7 @@ cmd_rotate_window_exec(struct cmd *self, struct cmdq_item *item)
 	struct layout_cell	*lc;
 	u_int			 sx, sy, xoff, yoff;
 
-	server_unzoom_window(w);
+	window_push_zoom(w, args_has(self->args, 'Z'));
 
 	if (args_has(self->args, 'D')) {
 		wp = TAILQ_LAST(&w->panes, window_panes);
@@ -77,9 +77,6 @@ cmd_rotate_window_exec(struct cmd *self, struct cmdq_item *item)
 
 		if ((wp = TAILQ_PREV(w->active, window_panes, entry)) == NULL)
 			wp = TAILQ_LAST(&w->panes, window_panes);
-		window_set_active_pane(w, wp, 1);
-		cmd_find_from_winlink_pane(current, wl, wp, 0);
-		server_redraw_window(w);
 	} else {
 		wp = TAILQ_FIRST(&w->panes);
 		TAILQ_REMOVE(&w->panes, wp, entry);
@@ -105,10 +102,12 @@ cmd_rotate_window_exec(struct cmd *self, struct cmdq_item *item)
 
 		if ((wp = TAILQ_NEXT(w->active, entry)) == NULL)
 			wp = TAILQ_FIRST(&w->panes);
-		window_set_active_pane(w, wp, 1);
-		cmd_find_from_winlink_pane(current, wl, wp, 0);
-		server_redraw_window(w);
 	}
 
+	window_set_active_pane(w, wp, 1);
+	cmd_find_from_winlink_pane(current, wl, wp, 0);
+	window_pop_zoom(w);
+	server_redraw_window(w);
+
 	return (CMD_RETURN_NORMAL);
 }

cmd-save-buffer.c

@@ -55,6 +55,20 @@ const struct cmd_entry cmd_show_buffer_entry = {
 	.exec = cmd_save_buffer_exec
 };
 
+static void
+cmd_save_buffer_done(__unused struct client *c, const char *path, int error,
+    __unused int closed, __unused struct evbuffer *buffer, void *data)
+{
+	struct cmdq_item	*item = data;
+
+	if (!closed)
+		return;
+
+	if (error != 0)
+		cmdq_error(item, "%s: %s", path, strerror(error));
+	cmdq_continue(item);
+}
+
 static enum cmd_retval
 cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item)
 {
@@ -64,18 +78,17 @@ cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item)
 	struct winlink		*wl = item->target.wl;
 	struct window_pane	*wp = item->target.wp;
 	struct paste_buffer	*pb;
-	const char		*bufname, *bufdata, *start, *end, *flags;
-	char			*msg, *path, *file;
-	size_t			 size, used, msglen, bufsize;
-	FILE			*f;
+	int			 flags;
+	const char		*bufname = args_get(args, 'b'), *bufdata;
+	size_t			 bufsize;
+	char			*path;
 
-	if (!args_has(args, 'b')) {
+	if (bufname == NULL) {
 		if ((pb = paste_get_top(NULL)) == NULL) {
 			cmdq_error(item, "no buffers");
 			return (CMD_RETURN_ERROR);
 		}
 	} else {
-		bufname = args_get(args, 'b');
 		pb = paste_get_name(bufname);
 		if (pb == NULL) {
 			cmdq_error(item, "no buffer %s", bufname);
@@ -88,74 +101,13 @@ cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item)
 		path = xstrdup("-");
 	else
 		path = format_single(item, args->argv[0], c, s, wl, wp);
-	if (strcmp(path, "-") == 0) {
-		free(path);
-		c = item->client;
-		if (c == NULL) {
-			cmdq_error(item, "can't write to stdout");
-			return (CMD_RETURN_ERROR);
-		}
-		if (c->session == NULL || (c->flags & CLIENT_CONTROL))
-			goto do_stdout;
-		goto do_print;
-	}
-
-	flags = "wb";
 	if (args_has(self->args, 'a'))
-		flags = "ab";
-
-	file = server_client_get_path(item->client, path);
+		flags = O_APPEND;
+	else
+		flags = 0;
+	file_write(item->client, path, flags, bufdata, bufsize,
+	    cmd_save_buffer_done, item);
 	free(path);
 
-	f = fopen(file, flags);
-	if (f == NULL) {
-		cmdq_error(item, "%s: %s", file, strerror(errno));
-		free(file);
-		return (CMD_RETURN_ERROR);
-	}
-
-	if (fwrite(bufdata, 1, bufsize, f) != bufsize) {
-		cmdq_error(item, "%s: write error", file);
-		fclose(f);
-		free(file);
-		return (CMD_RETURN_ERROR);
-	}
-
-	fclose(f);
-	free(file);
-
-	return (CMD_RETURN_NORMAL);
-
-do_stdout:
-	evbuffer_add(c->stdout_data, bufdata, bufsize);
-	server_client_push_stdout(c);
-	return (CMD_RETURN_NORMAL);
-
-do_print:
-	if (bufsize > (INT_MAX / 4) - 1) {
-		cmdq_error(item, "buffer too big");
-		return (CMD_RETURN_ERROR);
-	}
-	msg = NULL;
-
-	used = 0;
-	while (used != bufsize) {
-		start = bufdata + used;
-		end = memchr(start, '\n', bufsize - used);
-		if (end != NULL)
-			size = end - start;
-		else
-			size = bufsize - used;
-
-		msglen = size * 4 + 1;
-		msg = xrealloc(msg, msglen);
-
-		strvisx(msg, start, size, VIS_OCTAL|VIS_TAB);
-		cmdq_print(item, "%s", msg);
-
-		used += size + (end != NULL);
-	}
-
-	free(msg);
-	return (CMD_RETURN_NORMAL);
+	return (CMD_RETURN_WAIT);
 }

cmd-select-pane.c

@@ -33,8 +33,8 @@ const struct cmd_entry cmd_select_pane_entry = {
 	.name = "select-pane",
 	.alias = "selectp",
 
-	.args = { "DdegLlMmP:RT:t:U", 0, 0 }, /* -P and -g deprecated */
-	.usage = "[-DdeLlMmRU] [-T title] " CMD_TARGET_PANE_USAGE,
+	.args = { "DdegLlMmP:RT:t:UZ", 0, 0 }, /* -P and -g deprecated */
+	.usage = "[-DdeLlMmRUZ] [-T title] " CMD_TARGET_PANE_USAGE,
 
 	.target = { 't', CMD_FIND_PANE, 0 },
 
@@ -46,8 +46,8 @@ const struct cmd_entry cmd_last_pane_entry = {
 	.name = "last-pane",
 	.alias = "lastp",
 
-	.args = { "det:", 0, 0 },
-	.usage = "[-de] " CMD_TARGET_WINDOW_USAGE,
+	.args = { "det:Z", 0, 0 },
+	.usage = "[-deZ] " CMD_TARGET_WINDOW_USAGE,
 
 	.target = { 't', CMD_FIND_WINDOW, 0 },
 
@@ -111,12 +111,15 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 		else if (args_has(self->args, 'd'))
 			lastwp->flags |= PANE_INPUTOFF;
 		else {
-			server_unzoom_window(w);
+			if (window_push_zoom(w, args_has(self->args, 'Z')))
+				server_redraw_window(w);
 			window_redraw_active_switch(w, lastwp);
 			if (window_set_active_pane(w, lastwp, 1)) {
 				cmd_find_from_winlink(current, wl, 0);
 				cmd_select_pane_redraw(w);
 			}
+			if (window_pop_zoom(w))
+				server_redraw_window(w);
 		}
 		return (CMD_RETURN_NORMAL);
 	}
@@ -163,17 +166,21 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 	}
 
 	if (args_has(self->args, 'L')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_left(wp);
+		window_pop_zoom(w);
 	} else if (args_has(self->args, 'R')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_right(wp);
+		window_pop_zoom(w);
 	} else if (args_has(self->args, 'U')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_up(wp);
+		window_pop_zoom(w);
 	} else if (args_has(self->args, 'D')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_down(wp);
+		window_pop_zoom(w);
 	}
 	if (wp == NULL)
 		return (CMD_RETURN_NORMAL);
@@ -190,21 +197,24 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 	if (args_has(self->args, 'T')) {
 		pane_title = format_single(item, args_get(self->args, 'T'),
 		    c, s, wl, wp);
-		screen_set_title(&wp->base, pane_title);
-		server_status_window(wp->window);
+		if (screen_set_title(&wp->base, pane_title))
+			server_status_window(wp->window);
 		free(pane_title);
 		return (CMD_RETURN_NORMAL);
 	}
 
 	if (wp == w->active)
 		return (CMD_RETURN_NORMAL);
-	server_unzoom_window(wp->window);
+	if (window_push_zoom(w, args_has(self->args, 'Z')))
+		server_redraw_window(w);
 	window_redraw_active_switch(w, wp);
 	if (window_set_active_pane(w, wp, 1)) {
 		cmd_find_from_winlink_pane(current, wl, wp, 0);
 		cmdq_insert_hook(s, item, current, "after-select-pane");
 		cmd_select_pane_redraw(w);
 	}
+	if (window_pop_zoom(w))
+		server_redraw_window(w);
 
 	return (CMD_RETURN_NORMAL);
 }

cmd-send-keys.c

@@ -33,8 +33,9 @@ const struct cmd_entry cmd_send_keys_entry = {
 	.name = "send-keys",
 	.alias = "send",
 
-	.args = { "HlXRMN:t:", 0, -1 },
-	.usage = "[-HlXRM] [-N repeat-count] " CMD_TARGET_PANE_USAGE " key ...",
+	.args = { "FHlMN:Rt:X", 0, -1 },
+	.usage = "[-FHlMRX] [-N repeat-count] " CMD_TARGET_PANE_USAGE
+	         " key ...",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
 
@@ -59,6 +60,9 @@ static struct cmdq_item *
 cmd_send_keys_inject_key(struct client *c, struct cmd_find_state *fs,
     struct cmdq_item *item, key_code key)
 {
+	struct session			*s = fs->s;
+	struct winlink			*wl = fs->wl;
+	struct window_pane		*wp = fs->wp;
 	struct window_mode_entry	*wme;
 	struct key_table		*table;
 	struct key_binding		*bd;
@@ -67,7 +71,8 @@ cmd_send_keys_inject_key(struct client *c, struct cmd_find_state *fs,
 	if (wme == NULL || wme->mode->key_table == NULL) {
 		if (options_get_number(fs->wp->window->options, "xterm-keys"))
 			key |= KEYC_XTERM;
-		window_pane_key(fs->wp, item->client, fs->s, fs->wl, key, NULL);
+		if (window_pane_key(wp, item->client, s, wl, key, NULL) != 0)
+			return (NULL);
 		return (item);
 	}
 	table = key_bindings_get_table(wme->mode->key_table(wme), 1);
@@ -86,6 +91,7 @@ cmd_send_keys_inject_string(struct client *c, struct cmd_find_state *fs,
     struct cmdq_item *item, struct args *args, int i)
 {
 	const char		*s = args->argv[i];
+	struct cmdq_item	*new_item;
 	struct utf8_data	*ud, *uc;
 	wchar_t			 wc;
 	key_code		 key;
@@ -103,8 +109,11 @@ cmd_send_keys_inject_string(struct client *c, struct cmd_find_state *fs,
 	literal = args_has(args, 'l');
 	if (!literal) {
 		key = key_string_lookup_string(s);
-		if (key != KEYC_NONE && key != KEYC_UNKNOWN)
-			return (cmd_send_keys_inject_key(c, fs, item, key));
+		if (key != KEYC_NONE && key != KEYC_UNKNOWN) {
+			new_item = cmd_send_keys_inject_key(c, fs, item, key);
+			if (new_item != NULL)
+				return (new_item);
+		}
 		literal = 1;
 	}
 	if (literal) {

cmd-source-file.c

@@ -31,8 +31,6 @@
 
 static enum cmd_retval	cmd_source_file_exec(struct cmd *, struct cmdq_item *);
 
-static enum cmd_retval	cmd_source_file_done(struct cmdq_item *, void *);
-
 const struct cmd_entry cmd_source_file_entry = {
 	.name = "source-file",
 	.alias = "source",
@@ -44,40 +42,130 @@ const struct cmd_entry cmd_source_file_entry = {
 	.exec = cmd_source_file_exec
 };
 
+struct cmd_source_file_data {
+	struct cmdq_item	 *item;
+	int			  flags;
+
+	struct cmdq_item	 *after;
+	enum cmd_retval		  retval;
+
+	u_int			  current;
+	char			**files;
+	u_int			  nfiles;
+};
+
+static enum cmd_retval
+cmd_source_file_complete_cb(struct cmdq_item *item, __unused void *data)
+{
+	cfg_print_causes(item);
+	return (CMD_RETURN_NORMAL);
+}
+
+static void
+cmd_source_file_complete(struct client *c, struct cmd_source_file_data *cdata)
+{
+	struct cmdq_item	*new_item;
+
+	if (cfg_finished) {
+		if (cdata->retval == CMD_RETURN_ERROR && c->session == NULL)
+			c->retval = 1;
+		new_item = cmdq_get_callback(cmd_source_file_complete_cb, NULL);
+		cmdq_insert_after(cdata->after, new_item);
+	}
+
+	free(cdata->files);
+	free(cdata);
+}
+
+static void
+cmd_source_file_done(struct client *c, const char *path, int error,
+    int closed, struct evbuffer *buffer, void *data)
+{
+	struct cmd_source_file_data	*cdata = data;
+	struct cmdq_item		*item = cdata->item;
+	void				*bdata = EVBUFFER_DATA(buffer);
+	size_t				 bsize = EVBUFFER_LENGTH(buffer);
+	u_int				 n;
+	struct cmdq_item		*new_item;
+
+	if (!closed)
+		return;
+
+	if (error != 0)
+		cmdq_error(item, "%s: %s", path, strerror(error));
+	else if (bsize != 0) {
+		if (load_cfg_from_buffer(bdata, bsize, path, c, cdata->after,
+		    cdata->flags, &new_item) < 0)
+			cdata->retval = CMD_RETURN_ERROR;
+		else if (new_item != NULL)
+			cdata->after = new_item;
+	}
+
+	n = ++cdata->current;
+	if (n < cdata->nfiles)
+		file_read(c, cdata->files[n], cmd_source_file_done, cdata);
+	else {
+		cmd_source_file_complete(c, cdata);
+		cmdq_continue(item);
+	}
+}
+
+static void
+cmd_source_file_add(struct cmd_source_file_data *cdata, const char *path)
+{
+	log_debug("%s: %s", __func__, path);
+	cdata->files = xreallocarray(cdata->files, cdata->nfiles + 1,
+	    sizeof *cdata->files);
+	cdata->files[cdata->nfiles++] = xstrdup(path);
+}
+
 static enum cmd_retval
 cmd_source_file_exec(struct cmd *self, struct cmdq_item *item)
 {
-	struct args		*args = self->args;
-	int			 flags = 0;
-	struct client		*c = item->client;
-	struct cmdq_item	*new_item, *after;
-	enum cmd_retval		 retval;
-	char			*pattern, *cwd;
-	const char		*path, *error;
-	glob_t			 g;
-	int			 i;
-	u_int			 j;
+	struct args			*args = self->args;
+	struct cmd_source_file_data	*cdata;
+	struct client			*c = item->client;
+	enum cmd_retval			 retval = CMD_RETURN_NORMAL;
+	char				*pattern, *cwd;
+	const char			*path, *error;
+	glob_t				 g;
+	int				 i, result;
+	u_int				 j;
+
+	cdata = xcalloc(1, sizeof *cdata);
+	cdata->item = item;
 
 	if (args_has(args, 'q'))
-		flags |= CMD_PARSE_QUIET;
+		cdata->flags |= CMD_PARSE_QUIET;
 	if (args_has(args, 'n'))
-		flags |= CMD_PARSE_PARSEONLY;
+		cdata->flags |= CMD_PARSE_PARSEONLY;
 	if (args_has(args, 'v'))
-		flags |= CMD_PARSE_VERBOSE;
+		cdata->flags |= CMD_PARSE_VERBOSE;
+
 	utf8_stravis(&cwd, server_client_get_cwd(c, NULL), VIS_GLOB);
 
-	retval = CMD_RETURN_NORMAL;
 	for (i = 0; i < args->argc; i++) {
 		path = args->argv[i];
+		if (strcmp(path, "-") == 0) {
+			cmd_source_file_add(cdata, "-");
+			continue;
+		}
+
 		if (*path == '/')
 			pattern = xstrdup(path);
 		else
 			xasprintf(&pattern, "%s/%s", cwd, path);
 		log_debug("%s: %s", __func__, pattern);
 
-		if (glob(pattern, 0, NULL, &g) != 0) {
-			error = strerror(errno);
-			if (errno != ENOENT || (~flags & CMD_PARSE_QUIET)) {
+		if ((result = glob(pattern, 0, NULL, &g)) != 0) {
+			if (result != GLOB_NOMATCH ||
+			    (~cdata->flags & CMD_PARSE_QUIET)) {
+				if (result == GLOB_NOMATCH)
+					error = strerror(ENOENT);
+				else if (result == GLOB_NOSPACE)
+					error = strerror(ENOMEM);
+				else
+					error = strerror(EINVAL);
 				cmdq_error(item, "%s: %s", path, error);
 				retval = CMD_RETURN_ERROR;
 			}
@@ -86,30 +174,19 @@ cmd_source_file_exec(struct cmd *self, struct cmdq_item *item)
 		}
 		free(pattern);
 
-		after = item;
-		for (j = 0; j < g.gl_pathc; j++) {
-			path = g.gl_pathv[j];
-			if (load_cfg(path, c, after, flags, &new_item) < 0)
-				retval = CMD_RETURN_ERROR;
-			else if (new_item != NULL)
-				after = new_item;
-		}
-		globfree(&g);
-	}
-	if (cfg_finished) {
-		if (retval == CMD_RETURN_ERROR && c->session == NULL)
-			c->retval = 1;
-		new_item = cmdq_get_callback(cmd_source_file_done, NULL);
-		cmdq_insert_after(item, new_item);
+		for (j = 0; j < g.gl_pathc; j++)
+			cmd_source_file_add(cdata, g.gl_pathv[j]);
 	}
 
+	cdata->after = item;
+	cdata->retval = retval;
+
+	if (cdata->nfiles != 0) {
+		file_read(c, cdata->files[0], cmd_source_file_done, cdata);
+		retval = CMD_RETURN_WAIT;
+	} else
+		cmd_source_file_complete(c, cdata);
+
 	free(cwd);
 	return (retval);
 }
-
-static enum cmd_retval
-cmd_source_file_done(struct cmdq_item *item, __unused void *data)
-{
-	cfg_print_causes(item);
-	return (CMD_RETURN_NORMAL);
-}

cmd-split-window.c

@@ -41,8 +41,7 @@ const struct cmd_entry cmd_split_window_entry = {
 
 	.args = { "bc:de:fF:hIl:p:Pt:v", 0, -1 },
 	.usage = "[-bdefhIPv] [-c start-directory] [-e environment] "
-		 "[-F format] [-p percentage|-l size] " CMD_TARGET_PANE_USAGE
-		 " [command]",
+		 "[-F format] [-l size] " CMD_TARGET_PANE_USAGE " [command]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
 
@@ -64,20 +63,37 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 	struct layout_cell	*lc;
 	struct cmd_find_state	 fs;
 	int			 size, percentage, flags, input;
-	const char		*template, *add;
-	char			*cause, *cp;
+	const char		*template, *add, *errstr, *p;
+	char			*cause, *cp, *copy;
+	size_t			 plen;
 	struct args_value	*value;
 
 	if (args_has(args, 'h'))
 		type = LAYOUT_LEFTRIGHT;
 	else
 		type = LAYOUT_TOPBOTTOM;
-	if (args_has(args, 'l')) {
-		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
-		if (cause != NULL) {
-			cmdq_error(item, "create pane failed: -l %s", cause);
-			free(cause);
-			return (CMD_RETURN_ERROR);
+	if ((p = args_get(args, 'l')) != NULL) {
+		plen = strlen(p);
+		if (p[plen - 1] == '%') {
+			copy = xstrdup(p);
+			copy[plen - 1] = '\0';
+			percentage = strtonum(copy, 0, INT_MAX, &errstr);
+			free(copy);
+			if (errstr != NULL) {
+				cmdq_error(item, "percentage %s", errstr);
+				return (CMD_RETURN_ERROR);
+			}
+			if (type == LAYOUT_TOPBOTTOM)
+				size = (wp->sy * percentage) / 100;
+			else
+				size = (wp->sx * percentage) / 100;
+		} else {
+			size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
+			if (cause != NULL) {
+				cmdq_error(item, "lines %s", cause);
+				free(cause);
+				return (CMD_RETURN_ERROR);
+			}
 		}
 	} else if (args_has(args, 'p')) {
 		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);

cmd-swap-pane.c

@@ -32,8 +32,8 @@ const struct cmd_entry cmd_swap_pane_entry = {
 	.name = "swap-pane",
 	.alias = "swapp",
 
-	.args = { "dDs:t:U", 0, 0 },
-	.usage = "[-dDU] " CMD_SRCDST_PANE_USAGE,
+	.args = { "dDs:t:UZ", 0, 0 },
+	.usage = "[-dDUZ] " CMD_SRCDST_PANE_USAGE,
 
 	.source = { 's', CMD_FIND_PANE, CMD_FIND_DEFAULT_MARKED },
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -45,6 +45,7 @@ const struct cmd_entry cmd_swap_pane_entry = {
 static enum cmd_retval
 cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 {
+	struct args		*args = self->args;
 	struct window		*src_w, *dst_w;
 	struct window_pane	*tmp_wp, *src_wp, *dst_wp;
 	struct layout_cell	*src_lc, *dst_lc;
@@ -54,23 +55,27 @@ cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 	dst_wp = item->target.wp;
 	src_w = item->source.wl->window;
 	src_wp = item->source.wp;
-	server_unzoom_window(dst_w);
 
-	if (args_has(self->args, 'D')) {
+	if (window_push_zoom(dst_w, args_has(args, 'Z')))
+		server_redraw_window(dst_w);
+
+	if (args_has(args, 'D')) {
 		src_w = dst_w;
 		src_wp = TAILQ_NEXT(dst_wp, entry);
 		if (src_wp == NULL)
 			src_wp = TAILQ_FIRST(&dst_w->panes);
-	} else if (args_has(self->args, 'U')) {
+	} else if (args_has(args, 'U')) {
 		src_w = dst_w;
 		src_wp = TAILQ_PREV(dst_wp, window_panes, entry);
 		if (src_wp == NULL)
 			src_wp = TAILQ_LAST(&dst_w->panes, window_panes);
 	}
-	server_unzoom_window(src_w);
+
+	if (src_w != dst_w && window_push_zoom(src_w, args_has(args, 'Z')))
+		server_redraw_window(src_w);
 
 	if (src_wp == dst_wp)
-		return (CMD_RETURN_NORMAL);
+		goto out;
 
 	tmp_wp = TAILQ_PREV(dst_wp, window_panes, entry);
 	TAILQ_REMOVE(&dst_w->panes, dst_wp, entry);
@@ -103,7 +108,7 @@ cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 	dst_wp->xoff = xoff; dst_wp->yoff = yoff;
 	window_pane_resize(dst_wp, sx, sy);
 
-	if (!args_has(self->args, 'd')) {
+	if (!args_has(args, 'd')) {
 		if (src_w != dst_w) {
 			window_set_active_pane(src_w, dst_wp, 1);
 			window_set_active_pane(dst_w, src_wp, 1);
@@ -126,5 +131,10 @@ cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 	server_redraw_window(src_w);
 	server_redraw_window(dst_w);
 
+out:
+	if (window_pop_zoom(src_w))
+		server_redraw_window(src_w);
+	if (src_w != dst_w && window_pop_zoom(dst_w))
+		server_redraw_window(dst_w);
 	return (CMD_RETURN_NORMAL);
 }

cmd-switch-client.c

@@ -34,8 +34,8 @@ const struct cmd_entry cmd_switch_client_entry = {
 	.name = "switch-client",
 	.alias = "switchc",
 
-	.args = { "lc:Enpt:rT:", 0, 0 },
-	.usage = "[-Elnpr] [-c target-client] [-t target-session] "
+	.args = { "lc:Enpt:rT:Z", 0, 0 },
+	.usage = "[-ElnprZ] [-c target-client] [-t target-session] "
 		 "[-T key-table]",
 
 	/* -t is special */
@@ -54,6 +54,7 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 	struct client		*c;
 	struct session		*s;
 	struct winlink		*wl;
+	struct window		*w;
 	struct window_pane	*wp;
 	const char		*tablename;
 	struct key_table	*table;
@@ -72,6 +73,7 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 		return (CMD_RETURN_ERROR);
 	s = item->target.s;
 	wl = item->target.wl;
+	w = wl->window;
 	wp = item->target.wp;
 
 	if (args_has(args, 'r'))
@@ -112,12 +114,15 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 	} else {
 		if (item->client == NULL)
 			return (CMD_RETURN_NORMAL);
+		if (wl != NULL && wp != NULL) {
+			if (window_push_zoom(w, args_has(self->args, 'Z')))
+				server_redraw_window(w);
+			window_redraw_active_switch(w, wp);
+			window_set_active_pane(w, wp, 1);
+			if (window_pop_zoom(w))
+				server_redraw_window(w);
+		}
 		if (wl != NULL) {
-			server_unzoom_window(wl->window);
-			if (wp != NULL) {
-				window_redraw_active_switch(wp->window, wp);
-				window_set_active_pane(wp->window, wp, 1);
-			}
 			session_set_current(s, wl);
 			cmd_find_from_session(&item->shared->current, s, 0);
 		}

cmd.c

@@ -660,7 +660,7 @@ char *
 cmd_template_replace(const char *template, const char *s, int idx)
 {
 	char		 ch, *buf;
-	const char	*ptr, *cp, quote[] = "\"\\$;";
+	const char	*ptr, *cp, quote[] = "\"\\$;~";
 	int		 replaced, quoted;
 	size_t		 len;
 

compat.h

@@ -21,6 +21,7 @@
 #include <sys/ioctl.h>
 #include <sys/uio.h>
 
+#include <fnmatch.h>
 #include <limits.h>
 #include <stdio.h>
 #include <termios.h>
@@ -61,12 +62,31 @@ void	warn(const char *, ...);
 void	warnx(const char *, ...);
 #endif
 
-#ifndef HAVE_PATHS_H
-#define	_PATH_BSHELL	"/bin/sh"
-#define	_PATH_TMP	"/tmp/"
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+
+#ifndef _PATH_BSHELL
+#define _PATH_BSHELL	"/bin/sh"
+#endif
+
+#ifndef _PATH_TMP
+#define _PATH_TMP	"/tmp/"
+#endif
+
+#ifndef _PATH_DEVNULL
 #define _PATH_DEVNULL	"/dev/null"
+#endif
+
+#ifndef _PATH_TTY
 #define _PATH_TTY	"/dev/tty"
+#endif
+
+#ifndef _PATH_DEV
 #define _PATH_DEV	"/dev/"
+#endif
+
+#ifndef _PATH_DEFPATH
 #define _PATH_DEFPATH	"/usr/bin:/bin"
 #endif
 
@@ -98,10 +118,6 @@ void	warnx(const char *, ...);
 #include "compat/bitstring.h"
 #endif
 
-#ifdef HAVE_PATHS_H
-#include <paths.h>
-#endif
-
 #ifdef HAVE_LIBUTIL_H
 #include <libutil.h>
 #endif
@@ -154,6 +170,14 @@ void	warnx(const char *, ...);
 #define O_DIRECTORY 0
 #endif
 
+#ifndef FNM_CASEFOLD
+#ifdef FNM_IGNORECASE
+#define FNM_CASEFOLD FNM_IGNORECASE
+#else
+#define FNM_CASEFOLD 0
+#endif
+#endif
+
 #ifndef INFTIM
 #define INFTIM -1
 #endif

configure.ac

@@ -1,6 +1,6 @@
 # configure.ac
 
-AC_INIT([tmux], 3.0a)
+AC_INIT([tmux], 3.1-rc)
 AC_PREREQ([2.60])
 
 AC_CONFIG_AUX_DIR(etc)

control-notify.c

@@ -54,7 +54,7 @@ control_notify_input(struct client *c, struct window_pane *wp,
 			else
 			    evbuffer_add_printf(message, "%c", buf[i]);
 		}
-		control_write_buffer(c, message);
+		control_write(c, "%s", EVBUFFER_DATA(message));
 		evbuffer_free(message);
 	}
 }

control.c

@@ -30,23 +30,12 @@
 void
 control_write(struct client *c, const char *fmt, ...)
 {
-	va_list		 ap;
+	va_list	ap;
 
 	va_start(ap, fmt);
-	evbuffer_add_vprintf(c->stdout_data, fmt, ap);
+	file_vprint(c, fmt, ap);
+	file_print(c, "\n");
 	va_end(ap);
-
-	evbuffer_add(c->stdout_data, "\n", 1);
-	server_client_push_stdout(c);
-}
-
-/* Write a buffer, adding a terminal newline. Empties buffer. */
-void
-control_write_buffer(struct client *c, struct evbuffer *buffer)
-{
-	evbuffer_add_buffer(c->stdout_data, buffer);
-	evbuffer_add(c->stdout_data, "\n", 1);
-	server_client_push_stdout(c);
 }
 
 /* Control error callback. */
@@ -65,20 +54,22 @@ control_error(struct cmdq_item *item, void *data)
 }
 
 /* Control input callback. Read lines and fire commands. */
-void
-control_callback(struct client *c, int closed, __unused void *data)
+static void
+control_callback(__unused struct client *c, __unused const char *path,
+    int error, int closed, struct evbuffer *buffer, __unused void *data)
 {
 	char			*line;
 	struct cmdq_item	*item;
 	struct cmd_parse_result	*pr;
 
-	if (closed)
+	if (closed || error != 0)
 		c->flags |= CLIENT_EXIT;
 
 	for (;;) {
-		line = evbuffer_readln(c->stdin_data, NULL, EVBUFFER_EOL_LF);
+		line = evbuffer_readln(buffer, NULL, EVBUFFER_EOL_LF);
 		if (line == NULL)
 			break;
+		log_debug("%s: %s", __func__, line);
 		if (*line == '\0') { /* empty line exit */
 			free(line);
 			c->flags |= CLIENT_EXIT;
@@ -104,3 +95,12 @@ control_callback(struct client *c, int closed, __unused void *data)
 		free(line);
 	}
 }
+
+void
+control_start(struct client *c)
+{
+	file_read(c, "-", control_callback, c);
+
+	if (c->flags & CLIENT_CONTROLCONTROL)
+		file_print(c, "\033P1000p");
+}

file.c

@@ -0,0 +1,414 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2019 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 <sys/queue.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "tmux.h"
+
+static int	file_next_stream = 3;
+
+RB_GENERATE(client_files, client_file, entry, file_cmp);
+
+static char *
+file_get_path(struct client *c, const char *file)
+{
+	char	*path;
+
+	if (*file == '/')
+		path = xstrdup(file);
+	else
+		xasprintf(&path, "%s/%s", server_client_get_cwd(c, NULL), file);
+	return (path);
+}
+
+int
+file_cmp(struct client_file *cf1, struct client_file *cf2)
+{
+	if (cf1->stream < cf2->stream)
+		return (-1);
+	if (cf1->stream > cf2->stream)
+		return (1);
+	return (0);
+}
+
+struct client_file *
+file_create(struct client *c, int stream, client_file_cb cb, void *cbdata)
+{
+	struct client_file	*cf;
+
+	cf = xcalloc(1, sizeof *cf);
+	cf->c = c;
+	cf->references = 1;
+	cf->stream = stream;
+
+	cf->buffer = evbuffer_new();
+	if (cf->buffer == NULL)
+		fatalx("out of memory");
+
+	cf->cb = cb;
+	cf->data = cbdata;
+
+	if (cf->c != NULL) {
+		RB_INSERT(client_files, &cf->c->files, cf);
+		cf->c->references++;
+	}
+
+	return (cf);
+}
+
+void
+file_free(struct client_file *cf)
+{
+	if (--cf->references != 0)
+		return;
+
+	evbuffer_free(cf->buffer);
+	free(cf->path);
+
+	if (cf->c != NULL) {
+		RB_REMOVE(client_files, &cf->c->files, cf);
+		server_client_unref(cf->c);
+	}
+	free(cf);
+}
+
+static void
+file_fire_done_cb(__unused int fd, __unused short events, void *arg)
+{
+	struct client_file	*cf = arg;
+	struct client		*c = cf->c;
+
+	if (cf->cb != NULL && (c == NULL || (~c->flags & CLIENT_DEAD)))
+		cf->cb(c, cf->path, cf->error, 1, cf->buffer, cf->data);
+	file_free(cf);
+}
+
+void
+file_fire_done(struct client_file *cf)
+{
+	event_once(-1, EV_TIMEOUT, file_fire_done_cb, cf, NULL);
+}
+
+void
+file_fire_read(struct client_file *cf)
+{
+	struct client	*c = cf->c;
+
+	if (cf->cb != NULL)
+		cf->cb(c, cf->path, cf->error, 0, cf->buffer, cf->data);
+}
+
+int
+file_can_print(struct client *c)
+{
+	if (c == NULL)
+		return (0);
+	if (c->session != NULL && (~c->flags & CLIENT_CONTROL))
+		return (0);
+	return (1);
+}
+
+void
+file_print(struct client *c, const char *fmt, ...)
+{
+	va_list	ap;
+
+	va_start(ap, fmt);
+	file_vprint(c, fmt, ap);
+	va_end(ap);
+}
+
+void
+file_vprint(struct client *c, const char *fmt, va_list ap)
+{
+	struct client_file	 find, *cf;
+	struct msg_write_open	 msg;
+
+	if (!file_can_print(c))
+		return;
+
+	find.stream = 1;
+	if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL) {
+		cf = file_create(c, 1, NULL, NULL);
+		cf->path = xstrdup("-");
+
+		evbuffer_add_vprintf(cf->buffer, fmt, ap);
+
+		msg.stream = 1;
+		msg.fd = STDOUT_FILENO;
+		msg.flags = 0;
+		proc_send(c->peer, MSG_WRITE_OPEN, -1, &msg, sizeof msg);
+	} else {
+		evbuffer_add_vprintf(cf->buffer, fmt, ap);
+		file_push(cf);
+	}
+}
+
+void
+file_print_buffer(struct client *c, void *data, size_t size)
+{
+	struct client_file	 find, *cf;
+	struct msg_write_open	 msg;
+
+	if (!file_can_print(c))
+		return;
+
+	find.stream = 1;
+	if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL) {
+		cf = file_create(c, 1, NULL, NULL);
+		cf->path = xstrdup("-");
+
+		evbuffer_add(cf->buffer, data, size);
+
+		msg.stream = 1;
+		msg.fd = STDOUT_FILENO;
+		msg.flags = 0;
+		proc_send(c->peer, MSG_WRITE_OPEN, -1, &msg, sizeof msg);
+	} else {
+		evbuffer_add(cf->buffer, data, size);
+		file_push(cf);
+	}
+}
+
+void
+file_error(struct client *c, const char *fmt, ...)
+{
+	struct client_file	 find, *cf;
+	struct msg_write_open	 msg;
+	va_list			 ap;
+
+	if (!file_can_print(c))
+		return;
+
+	va_start(ap, fmt);
+
+	find.stream = 2;
+	if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL) {
+		cf = file_create(c, 2, NULL, NULL);
+		cf->path = xstrdup("-");
+
+		evbuffer_add_vprintf(cf->buffer, fmt, ap);
+
+		msg.stream = 2;
+		msg.fd = STDERR_FILENO;
+		msg.flags = 0;
+		proc_send(c->peer, MSG_WRITE_OPEN, -1, &msg, sizeof msg);
+	} else {
+		evbuffer_add_vprintf(cf->buffer, fmt, ap);
+		file_push(cf);
+	}
+
+	va_end(ap);
+}
+
+void
+file_write(struct client *c, const char *path, int flags, const void *bdata,
+    size_t bsize, client_file_cb cb, void *cbdata)
+{
+	struct client_file	*cf;
+	FILE			*f;
+	struct msg_write_open	*msg;
+	size_t			 msglen;
+	int			 fd = -1;
+	const char		*mode;
+
+	if (strcmp(path, "-") == 0) {
+		cf = file_create(c, file_next_stream++, cb, cbdata);
+		cf->path = xstrdup("-");
+
+		fd = STDOUT_FILENO;
+		if (c == NULL || c->flags & CLIENT_ATTACHED) {
+			cf->error = EBADF;
+			goto done;
+		}
+		goto skip;
+	}
+
+	cf = file_create(c, file_next_stream++, cb, cbdata);
+	cf->path = file_get_path(c, path);
+
+	if (c == NULL || c->flags & CLIENT_ATTACHED) {
+		if (flags & O_APPEND)
+			mode = "ab";
+		else
+			mode = "wb";
+		f = fopen(cf->path, mode);
+		if (f == NULL) {
+			cf->error = errno;
+			goto done;
+		}
+		if (fwrite(bdata, 1, bsize, f) != bsize) {
+			fclose(f);
+			cf->error = EIO;
+			goto done;
+		}
+		fclose(f);
+		goto done;
+	}
+
+skip:
+	evbuffer_add(cf->buffer, bdata, bsize);
+
+	msglen = strlen(cf->path) + 1 + sizeof *msg;
+	if (msglen > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
+		cf->error = E2BIG;
+		goto done;
+	}
+	msg = xmalloc(msglen);
+	msg->stream = cf->stream;
+	msg->fd = fd;
+	msg->flags = flags;
+	memcpy(msg + 1, cf->path, msglen - sizeof *msg);
+	if (proc_send(c->peer, MSG_WRITE_OPEN, -1, msg, msglen) != 0) {
+		free(msg);
+		cf->error = EINVAL;
+		goto done;
+	}
+	free(msg);
+	return;
+
+done:
+	file_fire_done(cf);
+}
+
+void
+file_read(struct client *c, const char *path, client_file_cb cb, void *cbdata)
+{
+	struct client_file	*cf;
+	FILE			*f;
+	struct msg_read_open	*msg;
+	size_t			 msglen, size;
+	int			 fd = -1;
+	char			 buffer[BUFSIZ];
+
+	if (strcmp(path, "-") == 0) {
+		cf = file_create(c, file_next_stream++, cb, cbdata);
+		cf->path = xstrdup("-");
+
+		fd = STDIN_FILENO;
+		if (c == NULL || c->flags & CLIENT_ATTACHED) {
+			cf->error = EBADF;
+			goto done;
+		}
+		goto skip;
+	}
+
+	cf = file_create(c, file_next_stream++, cb, cbdata);
+	cf->path = file_get_path(c, path);
+
+	if (c == NULL || c->flags & CLIENT_ATTACHED) {
+		f = fopen(cf->path, "rb");
+		if (f == NULL) {
+			cf->error = errno;
+			goto done;
+		}
+		for (;;) {
+			size = fread(buffer, 1, sizeof buffer, f);
+			if (evbuffer_add(cf->buffer, buffer, size) != 0) {
+				cf->error = ENOMEM;
+				goto done;
+			}
+			if (size != sizeof buffer)
+				break;
+		}
+		if (ferror(f)) {
+			cf->error = EIO;
+			goto done;
+		}
+		fclose(f);
+		goto done;
+	}
+
+skip:
+	msglen = strlen(cf->path) + 1 + sizeof *msg;
+	if (msglen > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
+		cf->error = E2BIG;
+		goto done;
+	}
+	msg = xmalloc(msglen);
+	msg->stream = cf->stream;
+	msg->fd = fd;
+	memcpy(msg + 1, cf->path, msglen - sizeof *msg);
+	if (proc_send(c->peer, MSG_READ_OPEN, -1, msg, msglen) != 0) {
+		free(msg);
+		cf->error = EINVAL;
+		goto done;
+	}
+	free(msg);
+	return;
+
+done:
+	file_fire_done(cf);
+}
+
+static void
+file_push_cb(__unused int fd, __unused short events, void *arg)
+{
+	struct client_file	*cf = arg;
+	struct client		*c = cf->c;
+
+	if (~c->flags & CLIENT_DEAD)
+		file_push(cf);
+	file_free(cf);
+}
+
+void
+file_push(struct client_file *cf)
+{
+	struct client		*c = cf->c;
+	struct msg_write_data	*msg;
+	size_t			 msglen, sent, left;
+	struct msg_write_close	 close;
+
+	msg = xmalloc(sizeof *msg);
+	left = EVBUFFER_LENGTH(cf->buffer);
+	while (left != 0) {
+		sent = left;
+		if (sent > MAX_IMSGSIZE - IMSG_HEADER_SIZE - sizeof *msg)
+			sent = MAX_IMSGSIZE - IMSG_HEADER_SIZE - sizeof *msg;
+
+		msglen = (sizeof *msg) + sent;
+		msg = xrealloc(msg, msglen);
+		msg->stream = cf->stream;
+		memcpy(msg + 1, EVBUFFER_DATA(cf->buffer), sent);
+		if (proc_send(c->peer, MSG_WRITE, -1, msg, msglen) != 0)
+			break;
+		evbuffer_drain(cf->buffer, sent);
+
+		left = EVBUFFER_LENGTH(cf->buffer);
+		log_debug("%s: file %d sent %zu, left %zu", c->name, cf->stream,
+		    sent, left);
+	}
+	if (left != 0) {
+		cf->references++;
+		event_once(-1, EV_TIMEOUT, file_push_cb, cf, NULL);
+	} else if (cf->stream > 2) {
+		close.stream = cf->stream;
+		proc_send(c->peer, MSG_WRITE_CLOSE, -1, &close, sizeof close);
+		file_fire_done(cf);
+	}
+	free(msg);
+}

format-draw.c

@@ -513,8 +513,8 @@ format_draw(struct screen_write_ctx *octx, const struct grid_cell *base,
 	int			 focus_start = -1, focus_end = -1;
 	int			 list_state = -1, fill = -1;
 	enum style_align	 list_align = STYLE_ALIGN_DEFAULT;
-	struct grid_cell	 gc;
-	struct style		 sy;
+	struct grid_cell	 gc, current_default;
+	struct style		 sy, saved_sy;
 	struct utf8_data	*ud = &sy.gc.data;
 	const char		*cp, *end;
 	enum utf8_state		 more;
@@ -523,7 +523,8 @@ format_draw(struct screen_write_ctx *octx, const struct grid_cell *base,
 	struct format_ranges	 frs;
 	struct style_range	*sr;
 
-	style_set(&sy, base);
+	memcpy(&current_default, base, sizeof current_default);
+	style_set(&sy, &current_default);
 	TAILQ_INIT(&frs);
 	log_debug("%s: %s", __func__, expanded);
 
@@ -535,7 +536,7 @@ format_draw(struct screen_write_ctx *octx, const struct grid_cell *base,
 	for (i = 0; i < TOTAL; i++) {
 		screen_init(&s[i], size, 1, 0);
 		screen_write_start(&ctx[i], NULL, &s[i]);
-		screen_write_clearendofline(&ctx[i], base->bg);
+		screen_write_clearendofline(&ctx[i], current_default.bg);
 		width[i] = 0;
 	}
 
@@ -581,7 +582,8 @@ format_draw(struct screen_write_ctx *octx, const struct grid_cell *base,
 			goto out;
 		}
 		tmp = xstrndup(cp + 2, end - (cp + 2));
-		if (style_parse(&sy, base, tmp) != 0) {
+		style_copy(&saved_sy, &sy);
+		if (style_parse(&sy, &current_default, tmp) != 0) {
 			log_debug("%s: invalid style '%s'", __func__, tmp);
 			free(tmp);
 			cp = end + 1;
@@ -595,6 +597,15 @@ format_draw(struct screen_write_ctx *octx, const struct grid_cell *base,
 		if (sy.fill != 8)
 			fill = sy.fill;
 
+		/* If this style pushed or popped the default, update it. */
+		if (sy.default_type == STYLE_DEFAULT_PUSH) {
+			memcpy(&current_default, &saved_sy.gc, sizeof current_default);
+			sy.default_type = STYLE_DEFAULT_BASE;
+		} else if (sy.default_type == STYLE_DEFAULT_POP) {
+			memcpy(&current_default, base, sizeof current_default);
+			sy.default_type = STYLE_DEFAULT_BASE;
+		}
+
 		/* Check the list state. */
 		switch (sy.list) {
 		case STYLE_LIST_ON:
@@ -838,8 +849,10 @@ format_trim_left(const char *expanded, u_int limit)
 					out += ud.size;
 				}
 				width += ud.width;
-			} else
+			} else {
 				cp -= ud.have;
+				cp++;
+			}
 		} else if (*cp > 0x1f && *cp < 0x7f) {
 			if (width + 1 <= limit)
 				*out++ = *cp;
@@ -885,8 +898,10 @@ format_trim_right(const char *expanded, u_int limit)
 					out += ud.size;
 				}
 				width += ud.width;
-			} else
+			} else {
 				cp -= ud.have;
+				cp++;
+			}
 		} else if (*cp > 0x1f && *cp < 0x7f) {
 			if (width >= skip)
 				*out++ = *cp;

format.c

@@ -456,6 +456,35 @@ format_cb_pid(__unused struct format_tree *ft, struct format_entry *fe)
 	xasprintf(&fe->value, "%ld", (long)getpid());
 }
 
+/* Callback for session_attached_list. */
+static void
+format_cb_session_attached_list(struct format_tree *ft, struct format_entry *fe)
+{
+	struct session	*s = ft->s;
+	struct client	*loop;
+	struct evbuffer	*buffer;
+	int		 size;
+
+	if (s == NULL)
+		return;
+
+	buffer = evbuffer_new();
+	if (buffer == NULL)
+		fatalx("out of memory");
+
+	TAILQ_FOREACH(loop, &clients, entry) {
+		if (loop->session == s) {
+			if (EVBUFFER_LENGTH(buffer) > 0)
+				evbuffer_add(buffer, ",", 1);
+			evbuffer_add_printf(buffer, "%s", loop->name);
+		}
+	}
+
+	if ((size = EVBUFFER_LENGTH(buffer)) != 0)
+		xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer));
+	evbuffer_free(buffer);
+}
+
 /* Callback for session_alerts. */
 static void
 format_cb_session_alerts(struct format_tree *ft, struct format_entry *fe)
@@ -528,6 +557,128 @@ format_cb_window_stack_index(struct format_tree *ft, struct format_entry *fe)
 		fe->value = xstrdup("0");
 }
 
+/* Callback for window_linked_sessions_list. */
+static void
+format_cb_window_linked_sessions_list(struct format_tree *ft,
+    struct format_entry *fe)
+{
+	struct window	*w = ft->wl->window;
+	struct winlink	*wl;
+	struct evbuffer	*buffer;
+	int		 size;
+
+	buffer = evbuffer_new();
+	if (buffer == NULL)
+		fatalx("out of memory");
+
+	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
+		if (EVBUFFER_LENGTH(buffer) > 0)
+			evbuffer_add(buffer, ",", 1);
+		evbuffer_add_printf(buffer, "%s", wl->session->name);
+	}
+
+	if ((size = EVBUFFER_LENGTH(buffer)) != 0)
+		xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer));
+	evbuffer_free(buffer);
+}
+
+/* Callback for window_active_sessions. */
+static void
+format_cb_window_active_sessions(struct format_tree *ft,
+    struct format_entry *fe)
+{
+	struct window	*w = ft->wl->window;
+	struct winlink	*wl;
+	u_int		 n = 0;
+
+	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
+		if (wl->session->curw == wl)
+			n++;
+	}
+
+	xasprintf(&fe->value, "%u", n);
+}
+
+/* Callback for window_active_sessions_list. */
+static void
+format_cb_window_active_sessions_list(struct format_tree *ft,
+    struct format_entry *fe)
+{
+	struct window	*w = ft->wl->window;
+	struct winlink	*wl;
+	struct evbuffer	*buffer;
+	int		 size;
+
+	buffer = evbuffer_new();
+	if (buffer == NULL)
+		fatalx("out of memory");
+
+	TAILQ_FOREACH(wl, &w->winlinks, wentry) {
+		if (wl->session->curw == wl) {
+			if (EVBUFFER_LENGTH(buffer) > 0)
+				evbuffer_add(buffer, ",", 1);
+			evbuffer_add_printf(buffer, "%s", wl->session->name);
+		}
+	}
+
+	if ((size = EVBUFFER_LENGTH(buffer)) != 0)
+		xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer));
+	evbuffer_free(buffer);
+}
+
+/* Callback for window_active_clients. */
+static void
+format_cb_window_active_clients(struct format_tree *ft, struct format_entry *fe)
+{
+	struct window	*w = ft->wl->window;
+	struct client	*loop;
+	struct session	*client_session;
+	u_int		 n = 0;
+
+	TAILQ_FOREACH(loop, &clients, entry) {
+		client_session = loop->session;
+		if (client_session == NULL)
+			continue;
+
+		if (w == client_session->curw->window)
+			n++;
+	}
+
+	xasprintf(&fe->value, "%u", n);
+}
+
+/* Callback for window_active_clients_list. */
+static void
+format_cb_window_active_clients_list(struct format_tree *ft,
+    struct format_entry *fe)
+{
+	struct window	*w = ft->wl->window;
+	struct client	*loop;
+	struct session	*client_session;
+	struct evbuffer	*buffer;
+	int		 size;
+
+	buffer = evbuffer_new();
+	if (buffer == NULL)
+		fatalx("out of memory");
+
+	TAILQ_FOREACH(loop, &clients, entry) {
+		client_session = loop->session;
+		if (client_session == NULL)
+			continue;
+
+		if (w == client_session->curw->window) {
+			if (EVBUFFER_LENGTH(buffer) > 0)
+				evbuffer_add(buffer, ",", 1);
+			evbuffer_add_printf(buffer, "%s", loop->name);
+		}
+	}
+
+	if ((size = EVBUFFER_LENGTH(buffer)) != 0)
+		xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer));
+	evbuffer_free(buffer);
+}
+
 /* Callback for window_layout. */
 static void
 format_cb_window_layout(struct format_tree *ft, struct format_entry *fe)
@@ -574,7 +725,7 @@ format_cb_current_command(struct format_tree *ft, struct format_entry *fe)
 	struct window_pane	*wp = ft->wp;
 	char			*cmd;
 
-	if (wp == NULL)
+	if (wp == NULL || wp->shell == NULL)
 		return;
 
 	cmd = osdep_get_name(wp->fd, wp->tty);
@@ -677,11 +828,52 @@ format_cb_session_group_list(struct format_tree *ft, struct format_entry *fe)
 	buffer = evbuffer_new();
 	if (buffer == NULL)
 		fatalx("out of memory");
+
 	TAILQ_FOREACH(loop, &sg->sessions, gentry) {
 		if (EVBUFFER_LENGTH(buffer) > 0)
 			evbuffer_add(buffer, ",", 1);
 		evbuffer_add_printf(buffer, "%s", loop->name);
 	}
+
+	if ((size = EVBUFFER_LENGTH(buffer)) != 0)
+		xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer));
+	evbuffer_free(buffer);
+}
+
+/* Callback for session_group_attached_list. */
+static void
+format_cb_session_group_attached_list(struct format_tree *ft,
+    struct format_entry *fe)
+{
+	struct session		*s = ft->s, *client_session, *session_loop;
+	struct session_group	*sg;
+	struct client		*loop;
+	struct evbuffer		*buffer;
+	int			 size;
+
+	if (s == NULL)
+		return;
+	sg = session_group_contains(s);
+	if (sg == NULL)
+		return;
+
+	buffer = evbuffer_new();
+	if (buffer == NULL)
+		fatalx("out of memory");
+
+	TAILQ_FOREACH(loop, &clients, entry) {
+		client_session = loop->session;
+		if (client_session == NULL)
+			continue;
+		TAILQ_FOREACH(session_loop, &sg->sessions, gentry) {
+			if (session_loop == client_session){
+				if (EVBUFFER_LENGTH(buffer) > 0)
+					evbuffer_add(buffer, ",", 1);
+				evbuffer_add_printf(buffer, "%s", loop->name);
+			}
+		}
+	}
+
 	if ((size = EVBUFFER_LENGTH(buffer)) != 0)
 		xasprintf(&fe->value, "%.*s", size, EVBUFFER_DATA(buffer));
 	evbuffer_free(buffer);
@@ -718,30 +910,19 @@ format_cb_cursor_character(struct format_tree *ft, struct format_entry *fe)
 		xasprintf(&fe->value, "%.*s", (int)gc.data.size, gc.data.data);
 }
 
-/* Callback for mouse_word. */
-static void
-format_cb_mouse_word(struct format_tree *ft, struct format_entry *fe)
+/* Return word at given coordinates. Caller frees. */
+char *
+format_grid_word(struct grid *gd, u_int x, u_int y)
 {
-	struct window_pane	*wp;
-	u_int			 x, y, end;
-	struct grid		*gd;
 	struct grid_line	*gl;
 	struct grid_cell	 gc;
 	const char		*ws;
 	struct utf8_data	*ud = NULL;
+	u_int			 end;
 	size_t			 size = 0;
 	int			 found = 0;
+	char			*s = NULL;
 
-	if (!ft->m.valid)
-		return;
-	wp = cmd_mouse_pane(&ft->m, NULL, NULL);
-	if (wp == NULL)
-		return;
-	if (!TAILQ_EMPTY (&wp->modes))
-		return;
-	if (cmd_mouse_at(wp, &ft->m, &x, &y, 0) != 0)
-		return;
-	gd = wp->base.grid;
 	ws = options_get_string(global_s_options, "word-separators");
 
 	y = gd->hsize + y;
@@ -794,21 +975,19 @@ format_cb_mouse_word(struct format_tree *ft, struct format_entry *fe)
 	}
 	if (size != 0) {
 		ud[size].size = 0;
-		fe->value = utf8_tocstr(ud);
+		s = utf8_tocstr(ud);
 		free(ud);
 	}
+	return (s);
 }
 
-/* Callback for mouse_line. */
+/* Callback for mouse_word. */
 static void
-format_cb_mouse_line(struct format_tree *ft, struct format_entry *fe)
+format_cb_mouse_word(struct format_tree *ft, struct format_entry *fe)
 {
 	struct window_pane	*wp;
 	u_int			 x, y;
-	struct grid		*gd;
-	struct grid_cell	 gc;
-	struct utf8_data	*ud = NULL;
-	size_t			 size = 0;
+	char			*s;
 
 	if (!ft->m.valid)
 		return;
@@ -819,7 +998,21 @@ format_cb_mouse_line(struct format_tree *ft, struct format_entry *fe)
 		return;
 	if (cmd_mouse_at(wp, &ft->m, &x, &y, 0) != 0)
 		return;
-	gd = wp->base.grid;
+
+	s = format_grid_word(wp->base.grid, x, y);
+	if (s != NULL)
+		fe->value = s;
+}
+
+/* Return line at given coordinates. Caller frees. */
+char *
+format_grid_line(struct grid *gd, u_int y)
+{
+	struct grid_cell	 gc;
+	struct utf8_data	*ud = NULL;
+	u_int			 x;
+	size_t			 size = 0;
+	char			*s = NULL;
 
 	y = gd->hsize + y;
 	for (x = 0; x < grid_line_length(gd, y); x++) {
@@ -832,9 +1025,33 @@ format_cb_mouse_line(struct format_tree *ft, struct format_entry *fe)
 	}
 	if (size != 0) {
 		ud[size].size = 0;
-		fe->value = utf8_tocstr(ud);
+		s = utf8_tocstr(ud);
 		free(ud);
 	}
+	return (s);
+}
+
+/* Callback for mouse_line. */
+static void
+format_cb_mouse_line(struct format_tree *ft, struct format_entry *fe)
+{
+	struct window_pane	*wp;
+	u_int			 x, y;
+	char			*s;
+
+	if (!ft->m.valid)
+		return;
+	wp = cmd_mouse_pane(&ft->m, NULL, NULL);
+	if (wp == NULL)
+		return;
+	if (!TAILQ_EMPTY (&wp->modes))
+		return;
+	if (cmd_mouse_at(wp, &ft->m, &x, &y, 0) != 0)
+		return;
+
+	s = format_grid_line(wp->base.grid, y);
+	if (s != NULL)
+		fe->value = s;
 }
 
 /* Merge a format tree. */
@@ -904,7 +1121,7 @@ format_create(struct client *c, struct cmdq_item *item, int tag, int flags)
 	ft->flags = flags;
 	ft->time = time(NULL);
 
-	format_add(ft, "version", "%s", VERSION);
+	format_add(ft, "version", "%s", getversion());
 	format_add_cb(ft, "host", format_cb_host);
 	format_add_cb(ft, "host_short", format_cb_host_short);
 	format_add_cb(ft, "pid", format_cb_pid);
@@ -949,12 +1166,12 @@ format_each(struct format_tree *ft, void (*cb)(const char *, const char *,
     void *), void *arg)
 {
 	struct format_entry	*fe;
-	static char		 s[64];
+	char			 s[64];
 
 	RB_FOREACH(fe, format_entry_tree, &ft->tree) {
 		if (fe->t != 0) {
 			xsnprintf(s, sizeof s, "%lld", (long long)fe->t);
-			cb(fe->key, fe->value, s);
+			cb(fe->key, s, arg);
 		} else {
 			if (fe->value == NULL && fe->cb != NULL) {
 				fe->cb(ft, fe);
@@ -966,7 +1183,6 @@ format_each(struct format_tree *ft, void (*cb)(const char *, const char *,
 	}
 }
 
-
 /* Add a key-value pair. */
 void
 format_add(struct format_tree *ft, const char *key, const char *fmt, ...)
@@ -998,8 +1214,7 @@ format_add(struct format_tree *ft, const char *key, const char *fmt, ...)
 static void
 format_add_tv(struct format_tree *ft, const char *key, struct timeval *tv)
 {
-	struct format_entry	*fe;
-	struct format_entry	*fe_now;
+	struct format_entry	*fe, *fe_now;
 
 	fe = xmalloc(sizeof *fe);
 	fe->key = xstrdup(key);
@@ -1290,7 +1505,7 @@ format_build_modifiers(struct format_tree *ft, const char **s, u_int *count)
 		}
 
 		/* Now try single character with arguments. */
-		if (strchr("mCs=", cp[0]) == NULL)
+		if (strchr("mCs=p", cp[0]) == NULL)
 			break;
 		c = cp[0];
 
@@ -1551,15 +1766,15 @@ static int
 format_replace(struct format_tree *ft, const char *key, size_t keylen,
     char **buf, size_t *len, size_t *off)
 {
-	struct window_pane	*wp = ft->wp;
-	const char		*errptr, *copy, *cp, *marker = NULL;
-	char			*copy0, *condition, *found, *new;
-	char			*value, *left, *right;
-	size_t			 valuelen;
-	int			 modifiers = 0, limit = 0, j;
-	struct format_modifier  *list, *fm, *cmp = NULL, *search = NULL;
-	struct format_modifier  *sub = NULL;
-	u_int			 i, count;
+	struct window_pane	 *wp = ft->wp;
+	const char		 *errptr, *copy, *cp, *marker = NULL;
+	char			 *copy0, *condition, *found, *new;
+	char			 *value, *left, *right;
+	size_t			  valuelen;
+	int			  modifiers = 0, limit = 0, width = 0, j;
+	struct format_modifier   *list, *fm, *cmp = NULL, *search = NULL;
+	struct format_modifier	**sub = NULL;
+	u_int			  i, count, nsub = 0;
 
 	/* Make a copy of the key. */
 	copy = copy0 = xstrndup(key, keylen);
@@ -1588,7 +1803,9 @@ format_replace(struct format_tree *ft, const char *key, size_t keylen,
 			case 's':
 				if (fm->argc < 2)
 					break;
-				sub = fm;
+				sub = xreallocarray (sub, nsub + 1,
+				    sizeof *sub);
+				sub[nsub++] = fm;
 				break;
 			case '=':
 				if (fm->argc < 1)
@@ -1600,6 +1817,14 @@ format_replace(struct format_tree *ft, const char *key, size_t keylen,
 				if (fm->argc >= 2 && fm->argv[1] != NULL)
 					marker = fm->argv[1];
 				break;
+			case 'p':
+				if (fm->argc < 1)
+					break;
+				width = strtonum(fm->argv[0], INT_MIN, INT_MAX,
+				    &errptr);
+				if (errptr != NULL)
+					width = 0;
+				break;
 			case 'l':
 				modifiers |= FORMAT_LITERAL;
 				break;
@@ -1800,10 +2025,10 @@ done:
 	}
 
 	/* Perform substitution if any. */
-	if (sub != NULL) {
-		left = format_expand(ft, sub->argv[0]);
-		right = format_expand(ft, sub->argv[1]);
-		new = format_sub(sub, value, left, right);
+	for (i = 0; i < nsub; i++) {
+		left = format_expand(ft, sub[i]->argv[0]);
+		right = format_expand(ft, sub[i]->argv[1]);
+		new = format_sub(sub[i], value, left, right);
 		format_log(ft, "substitute '%s' to '%s': %s", left, right, new);
 		free(value);
 		value = new;
@@ -1834,6 +2059,19 @@ done:
 		format_log(ft, "applied length limit %d: %s", limit, value);
 	}
 
+	/* Pad the value if needed. */
+	if (width > 0) {
+		new = utf8_padcstr(value, width);
+		free(value);
+		value = new;
+		format_log(ft, "applied padding width %d: %s", width, value);
+	} else if (width < 0) {
+		new = utf8_rpadcstr(value, -width);
+		free(value);
+		value = new;
+		format_log(ft, "applied padding width %d: %s", width, value);
+	}
+
 	/* Expand the buffer and copy in the value. */
 	valuelen = strlen(value);
 	while (*len - *off < valuelen + 1) {
@@ -1846,12 +2084,15 @@ done:
 	format_log(ft, "replaced '%s' with '%s'", copy0, value);
 	free(value);
 
+	free(sub);
 	format_free_modifiers(list, count);
 	free(copy0);
 	return (0);
 
 fail:
 	format_log(ft, "failed %s", copy0);
+
+	free(sub);
 	format_free_modifiers(list, count);
 	free(copy0);
 	return (-1);
@@ -2091,8 +2332,14 @@ format_defaults_session(struct format_tree *ft, struct session *s)
 		format_add(ft, "session_group", "%s", sg->name);
 		format_add(ft, "session_group_size", "%u",
 		    session_group_count (sg));
+		format_add(ft, "session_group_attached", "%u",
+		    session_group_attached_count (sg));
+		format_add(ft, "session_group_many_attached", "%u",
+		    session_group_attached_count (sg) > 1);
 		format_add_cb(ft, "session_group_list",
 		    format_cb_session_group_list);
+		format_add_cb(ft, "session_group_attached_list",
+		    format_cb_session_group_attached_list);
 	}
 
 	format_add_tv(ft, "session_created", &s->creation_time);
@@ -2101,6 +2348,8 @@ format_defaults_session(struct format_tree *ft, struct session *s)
 
 	format_add(ft, "session_attached", "%u", s->attached);
 	format_add(ft, "session_many_attached", "%d", s->attached > 1);
+	format_add_cb(ft, "session_attached_list",
+	    format_cb_session_attached_list);
 
 	format_add_cb(ft, "session_alerts", format_cb_session_alerts);
 	format_add_cb(ft, "session_stack", format_cb_session_stack);
@@ -2113,7 +2362,6 @@ format_defaults_client(struct format_tree *ft, struct client *c)
 	struct session	*s;
 	const char	*name;
 	struct tty	*tty = &c->tty;
-	const char	*types[] = TTY_TYPES;
 
 	if (ft->s == NULL)
 		ft->s = c->session;
@@ -2123,14 +2371,14 @@ format_defaults_client(struct format_tree *ft, struct client *c)
 	format_add(ft, "client_pid", "%ld", (long) c->pid);
 	format_add(ft, "client_height", "%u", tty->sy);
 	format_add(ft, "client_width", "%u", tty->sx);
+	format_add(ft, "client_cell_width", "%u", tty->xpixel);
+	format_add(ft, "client_cell_height", "%u", tty->ypixel);
 	format_add(ft, "client_tty", "%s", c->ttyname);
 	format_add(ft, "client_control_mode", "%d",
 		!!(c->flags & CLIENT_CONTROL));
 
 	if (tty->term_name != NULL)
 		format_add(ft, "client_termname", "%s", tty->term_name);
-	if (tty->term_name != NULL)
-		format_add(ft, "client_termtype", "%s", types[tty->term_type]);
 
 	format_add_tv(ft, "client_created", &c->creation_time);
 	format_add_tv(ft, "client_activity", &c->activity_time);
@@ -2174,6 +2422,8 @@ format_defaults_window(struct format_tree *ft, struct window *w)
 	format_add(ft, "window_name", "%s", w->name);
 	format_add(ft, "window_width", "%u", w->sx);
 	format_add(ft, "window_height", "%u", w->sy);
+	format_add(ft, "window_cell_width", "%u", w->xpixel);
+	format_add(ft, "window_cell_height", "%u", w->ypixel);
 	format_add_cb(ft, "window_layout", format_cb_window_layout);
 	format_add_cb(ft, "window_visible_layout",
 	    format_cb_window_visible_layout);
@@ -2211,12 +2461,25 @@ format_defaults_winlink(struct format_tree *ft, struct winlink *wl)
 	format_add_cb(ft, "window_stack_index", format_cb_window_stack_index);
 	format_add(ft, "window_flags", "%s", window_printable_flags(wl));
 	format_add(ft, "window_active", "%d", wl == s->curw);
+	format_add_cb(ft, "window_active_sessions",
+	    format_cb_window_active_sessions);
+	format_add_cb(ft, "window_active_sessions_list",
+	    format_cb_window_active_sessions_list);
+	format_add_cb(ft, "window_active_clients",
+	    format_cb_window_active_clients);
+	format_add_cb(ft, "window_active_clients_list",
+	    format_cb_window_active_clients_list);
 
 	format_add(ft, "window_start_flag", "%d",
 	    !!(wl == RB_MIN(winlinks, &s->windows)));
 	format_add(ft, "window_end_flag", "%d",
 	    !!(wl == RB_MAX(winlinks, &s->windows)));
 
+	if (server_check_marked() && marked_pane.wl == wl)
+	    format_add(ft, "window_marked_flag", "1");
+	else
+	    format_add(ft, "window_marked_flag", "0");
+
 	format_add(ft, "window_bell_flag", "%d",
 	    !!(wl->flags & WINLINK_BELL));
 	format_add(ft, "window_activity_flag", "%d",
@@ -2226,6 +2489,11 @@ format_defaults_winlink(struct format_tree *ft, struct winlink *wl)
 	format_add(ft, "window_last_flag", "%d",
 	    !!(wl == TAILQ_FIRST(&s->lastw)));
 	format_add(ft, "window_linked", "%d", session_is_linked(s, wl->window));
+
+	format_add_cb(ft, "window_linked_sessions_list",
+	    format_cb_window_linked_sessions_list);
+	format_add(ft, "window_linked_sessions", "%u",
+	    wl->window->references);
 }
 
 /* Set default format keys for a window pane. */
@@ -2253,6 +2521,8 @@ format_defaults_pane(struct format_tree *ft, struct window_pane *wp)
 	format_add(ft, "pane_width", "%u", wp->sx);
 	format_add(ft, "pane_height", "%u", wp->sy);
 	format_add(ft, "pane_title", "%s", wp->base.title);
+	if (wp->base.path != NULL)
+	    format_add(ft, "pane_path", "%s", wp->base.path);
 	format_add(ft, "pane_id", "%%%u", wp->id);
 	format_add(ft, "pane_active", "%d", wp == w->active);
 	format_add(ft, "pane_input_off", "%d", !!(wp->flags & PANE_INPUTOFF));

grid.c

@@ -186,23 +186,25 @@ grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
 	struct grid_cell	*gc;
 
 	memcpy(gce, &grid_cleared_entry, sizeof *gce);
-	if (bg & COLOUR_FLAG_RGB) {
-		grid_get_extended_cell(gl, gce, gce->flags);
-		gl->flags |= GRID_LINE_EXTENDED;
+	if (bg != 8) {
+		if (bg & COLOUR_FLAG_RGB) {
+			grid_get_extended_cell(gl, gce, gce->flags);
+			gl->flags |= GRID_LINE_EXTENDED;
 
-		gc = &gl->extddata[gce->offset];
-		memcpy(gc, &grid_cleared_cell, sizeof *gc);
-		gc->bg = bg;
-	} else {
-		if (bg & COLOUR_FLAG_256)
-			gce->flags |= GRID_FLAG_BG256;
-		gce->data.bg = bg;
+			gc = &gl->extddata[gce->offset];
+			memcpy(gc, &grid_cleared_cell, sizeof *gc);
+			gc->bg = bg;
+		} else {
+			if (bg & COLOUR_FLAG_256)
+				gce->flags |= GRID_FLAG_BG256;
+			gce->data.bg = bg;
+		}
 	}
 }
 
 /* Check grid y position. */
 static int
-grid_check_y(struct grid *gd, const char* from, u_int py)
+grid_check_y(struct grid *gd, const char *from, u_int py)
 {
 	if (py >= gd->hsize + gd->sy) {
 		log_debug("%s: y out of range: %u", from, py);

input-keys.c

@@ -42,9 +42,6 @@ struct input_key_ent {
 };
 
 static const struct input_key_ent input_keys[] = {
-	/* Backspace key. */
-	{ KEYC_BSPACE,		"\177",		0 },
-
 	/* Paste keys. */
 	{ KEYC_PASTE_START,	"\033[200~",	0 },
 	{ KEYC_PASTE_END,	"\033[201~",	0 },
@@ -152,14 +149,14 @@ input_split2(u_int c, u_char *dst)
 }
 
 /* Translate a key code into an output key sequence. */
-void
+int
 input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
 {
 	const struct input_key_ent	*ike;
 	u_int				 i;
 	size_t				 dlen;
 	char				*out;
-	key_code			 justkey;
+	key_code			 justkey, newkey;
 	struct utf8_data		 ud;
 
 	log_debug("writing key 0x%llx (%s) to %%%u", key,
@@ -169,14 +166,22 @@ input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
 	if (KEYC_IS_MOUSE(key)) {
 		if (m != NULL && m->wp != -1 && (u_int)m->wp == wp->id)
 			input_key_mouse(wp, m);
-		return;
+		return (0);
 	}
 
 	/* Literal keys go as themselves (can't be more than eight bits). */
 	if (key & KEYC_LITERAL) {
 		ud.data[0] = (u_char)key;
 		bufferevent_write(wp->event, &ud.data[0], 1);
-		return;
+		return (0);
+	}
+
+	/* Is this backspace? */
+	if ((key & KEYC_MASK_KEY) == KEYC_BSPACE) {
+		newkey = options_get_number(global_options, "backspace");
+		if (newkey >= 0x7f)
+			newkey = '\177';
+		key = newkey|(key & KEYC_MASK_MOD);
 	}
 
 	/*
@@ -189,15 +194,15 @@ input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
 			bufferevent_write(wp->event, "\033", 1);
 		ud.data[0] = justkey;
 		bufferevent_write(wp->event, &ud.data[0], 1);
-		return;
+		return (0);
 	}
 	if (justkey > 0x7f && justkey < KEYC_BASE) {
 		if (utf8_split(justkey, &ud) != UTF8_DONE)
-			return;
+			return (-1);
 		if (key & KEYC_ESCAPE)
 			bufferevent_write(wp->event, "\033", 1);
 		bufferevent_write(wp->event, ud.data, ud.size);
-		return;
+		return (0);
 	}
 
 	/*
@@ -208,7 +213,7 @@ input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
 		if ((out = xterm_keys_lookup(key)) != NULL) {
 			bufferevent_write(wp->event, out, strlen(out));
 			free(out);
-			return;
+			return (0);
 		}
 	}
 	key &= ~KEYC_XTERM;
@@ -231,7 +236,7 @@ input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
 	}
 	if (i == nitems(input_keys)) {
 		log_debug("key 0x%llx missing", key);
-		return;
+		return (-1);
 	}
 	dlen = strlen(ike->data);
 	log_debug("found key 0x%llx: \"%s\"", key, ike->data);
@@ -240,6 +245,7 @@ input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
 	if (key & KEYC_ESCAPE)
 		bufferevent_write(wp->event, "\033", 1);
 	bufferevent_write(wp->event, ike->data, dlen);
+	return (0);
 }
 
 /* Translate mouse and output. */

input.c

@@ -20,6 +20,7 @@
 
 #include <netinet/in.h>
 
+#include <ctype.h>
 #include <resolv.h>
 #include <stdlib.h>
 #include <string.h>
@@ -740,7 +741,7 @@ input_timer_callback(__unused int fd, __unused short events, void *arg)
 static void
 input_start_timer(struct input_ctx *ictx)
 {
-	struct timeval	tv = { .tv_usec = 100000 };
+	struct timeval	tv = { .tv_sec = 5, .tv_usec = 0 };
 
 	event_del(&ictx->timer);
 	event_add(&ictx->timer, &tv);
@@ -772,6 +773,7 @@ input_save_state(struct input_ctx *ictx)
 	ictx->old_mode = s->mode;
 }
 
+/* Restore screen state. */
 static void
 input_restore_state(struct input_ctx *ictx)
 {
@@ -876,7 +878,7 @@ input_set_state(struct window_pane *wp, const struct input_transition *itr)
 void
 input_parse(struct window_pane *wp)
 {
-	struct evbuffer		*evb = wp->event->input;
+	struct evbuffer	*evb = wp->event->input;
 
 	input_parse_buffer(wp, EVBUFFER_DATA(evb), EVBUFFER_LENGTH(evb));
 	evbuffer_drain(evb, EVBUFFER_LENGTH(evb));
@@ -888,7 +890,8 @@ input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
 {
 	struct input_ctx		*ictx = wp->ictx;
 	struct screen_write_ctx		*sctx = &ictx->ctx;
-	const struct input_transition	*itr;
+	const struct input_state	*state = NULL;
+	const struct input_transition	*itr = NULL;
 	size_t				 off = 0;
 
 	if (len == 0)
@@ -916,16 +919,23 @@ input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
 		ictx->ch = buf[off++];
 
 		/* Find the transition. */
-		itr = ictx->state->transitions;
-		while (itr->first != -1 && itr->last != -1) {
-			if (ictx->ch >= itr->first && ictx->ch <= itr->last)
-				break;
-			itr++;
-		}
-		if (itr->first == -1 || itr->last == -1) {
-			/* No transition? Eh? */
-			fatalx("no transition from state");
+		if (ictx->state != state ||
+		    itr == NULL ||
+		    ictx->ch < itr->first ||
+		    ictx->ch > itr->last) {
+			itr = ictx->state->transitions;
+			while (itr->first != -1 && itr->last != -1) {
+				if (ictx->ch >= itr->first &&
+				    ictx->ch <= itr->last)
+					break;
+				itr++;
+			}
+			if (itr->first == -1 || itr->last == -1) {
+				/* No transition? Eh? */
+				fatalx("no transition from state");
+			}
 		}
+		state = ictx->state;
 
 		/*
 		 * Any state except print stops the current collection. This is
@@ -1293,6 +1303,7 @@ input_csi_dispatch(struct input_ctx *ictx)
 	struct input_table_entry       *entry;
 	int				i, n, m;
 	u_int				cx, bg = ictx->cell.cell.bg;
+	char			       *copy, *cp;
 
 	if (ictx->flags & INPUT_DISCARD)
 		return (0);
@@ -1424,6 +1435,13 @@ input_csi_dispatch(struct input_ctx *ictx)
 		case 6:
 			input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
 			break;
+		case 1337: /* Terminal version, from iTerm2. */
+			copy = xstrdup(getversion());
+			for (cp = copy; *cp != '\0'; cp++)
+				*cp = toupper((u_char)*cp);
+			input_reply(ictx, "\033[TMUX %sn", copy);
+			free(copy);
+			break;
 		default:
 			log_debug("%s: unknown '%c'", __func__, ictx->ch);
 			break;
@@ -2195,14 +2213,18 @@ input_exit_osc(struct input_ctx *ictx)
 	switch (option) {
 	case 0:
 	case 2:
-		if (utf8_isvalid(p)) {
-			screen_set_title(sctx->s, p);
+		if (screen_set_title(sctx->s, p))
 			server_status_window(ictx->wp->window);
-		}
 		break;
 	case 4:
 		input_osc_4(ictx, p);
 		break;
+	case 7:
+		if (utf8_isvalid(p)) {
+			screen_set_path(sctx->s, p);
+			server_status_window(ictx->wp->window);
+		}
+		break;
 	case 10:
 		input_osc_10(ictx, p);
 		break;
@@ -2250,10 +2272,8 @@ input_exit_apc(struct input_ctx *ictx)
 		return;
 	log_debug("%s: \"%s\"", __func__, ictx->input_buf);
 
-	if (!utf8_isvalid(ictx->input_buf))
-		return;
-	screen_set_title(sctx->s, ictx->input_buf);
-	server_status_window(ictx->wp->window);
+	if (screen_set_title(sctx->s, ictx->input_buf))
+		server_status_window(ictx->wp->window);
 }
 
 /* Rename string started. */
@@ -2271,6 +2291,9 @@ input_enter_rename(struct input_ctx *ictx)
 static void
 input_exit_rename(struct input_ctx *ictx)
 {
+	struct window_pane	*wp = ictx->wp;
+	struct options_entry	*oe;
+
 	if (ictx->flags & INPUT_DISCARD)
 		return;
 	if (!options_get_number(ictx->wp->options, "allow-rename"))
@@ -2279,6 +2302,13 @@ input_exit_rename(struct input_ctx *ictx)
 
 	if (!utf8_isvalid(ictx->input_buf))
 		return;
+
+	if (ictx->input_len == 0) {
+		oe = options_get(wp->window->options, "automatic-rename");
+		if (oe != NULL)
+			options_remove(oe);
+		return;
+	}
 	window_set_name(ictx->wp->window, ictx->input_buf);
 	options_set_number(ictx->wp->window->options, "automatic-rename", 0);
 	server_status_window(ictx->wp->window);
@@ -2320,6 +2350,54 @@ input_top_bit_set(struct input_ctx *ictx)
 	return (0);
 }
 
+/* Parse colour from OSC. */
+static int
+input_osc_parse_colour(const char *p, u_int *r, u_int *g, u_int *b)
+{
+	u_int		 rsize, gsize, bsize;
+	const char	*cp, *s = p;
+
+	if (sscanf(p, "rgb:%x/%x/%x", r, g, b) != 3)
+		return (0);
+	p += 4;
+
+	cp = strchr(p, '/');
+	rsize = cp - p;
+	if (rsize == 1)
+		(*r) = (*r) | ((*r) << 4);
+	else if (rsize == 3)
+		(*r) >>= 4;
+	else if (rsize == 4)
+		(*r) >>= 8;
+	else if (rsize != 2)
+		return (0);
+
+	p = cp + 1;
+	cp = strchr(p, '/');
+	gsize = cp - p;
+	if (gsize == 1)
+		(*g) = (*g) | ((*g) << 4);
+	else if (gsize == 3)
+		(*g) >>= 4;
+	else if (gsize == 4)
+		(*g) >>= 8;
+	else if (gsize != 2)
+		return (0);
+
+	bsize = strlen(cp + 1);
+	if (bsize == 1)
+		(*b) = (*b) | ((*b) << 4);
+	else if (bsize == 3)
+		(*b) >>= 4;
+	else if (bsize == 4)
+		(*b) >>= 8;
+	else if (bsize != 2)
+		return (0);
+
+	log_debug("%s: %s = %02x%02x%02x", __func__, s, *r, *g, *b);
+	return (1);
+}
+
 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
 static void
 input_osc_4(struct input_ctx *ictx, const char *p)
@@ -2338,7 +2416,7 @@ input_osc_4(struct input_ctx *ictx, const char *p)
 			goto bad;
 
 		s = strsep(&next, ";");
-		if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) {
+		if (!input_osc_parse_colour(s, &r, &g, &b)) {
 			s = next;
 			continue;
 		}
@@ -2363,8 +2441,11 @@ input_osc_10(struct input_ctx *ictx, const char *p)
 	u_int			 r, g, b;
 	char			 tmp[16];
 
-	if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3)
-	    goto bad;
+	if (strcmp(p, "?") == 0)
+		return;
+
+	if (!input_osc_parse_colour(p, &r, &g, &b))
+		goto bad;
 	xsnprintf(tmp, sizeof tmp, "fg=#%02x%02x%02x", r, g, b);
 	options_set_style(wp->options, "window-style", 1, tmp);
 	options_set_style(wp->options, "window-active-style", 1, tmp);
@@ -2384,7 +2465,10 @@ input_osc_11(struct input_ctx *ictx, const char *p)
 	u_int			 r, g, b;
 	char			 tmp[16];
 
-	if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3)
+	if (strcmp(p, "?") == 0)
+		return;
+
+	if (!input_osc_parse_colour(p, &r, &g, &b))
 	    goto bad;
 	xsnprintf(tmp, sizeof tmp, "bg=#%02x%02x%02x", r, g, b);
 	options_set_style(wp->options, "window-style", 1, tmp);

key-bindings.c

@@ -24,12 +24,6 @@
 
 #include "tmux.h"
 
-#define DEFAULT_CLIENT_MENU \
-	" 'Detach' 'd' {detach-client}" \
-	" 'Detach & Kill' 'X' {detach-client -P}" \
-	" 'Detach Others' 'o' {detach-client -a}" \
-	" ''" \
-	" 'Lock' 'l' {lock-client}"
 #define DEFAULT_SESSION_MENU \
 	" 'Next' 'n' {switch-client -n}" \
 	" 'Previous' 'p' {switch-client -p}" \
@@ -69,7 +63,6 @@
 	" '#{?pane_marked,Unmark,Mark}' 'm' {select-pane -m}" \
 	" '#{?window_zoomed_flag,Unzoom,Zoom}' 'z' {resize-pane -Z}"
 
-
 static int key_bindings_cmp(struct key_binding *, struct key_binding *);
 RB_GENERATE_STATIC(key_bindings, key_binding, entry, key_bindings_cmp);
 static int key_table_cmp(struct key_table *, struct key_table *);
@@ -92,6 +85,15 @@ key_bindings_cmp(struct key_binding *bd1, struct key_binding *bd2)
 	return (0);
 }
 
+static void
+key_bindings_free(struct key_table *table, struct key_binding *bd)
+{
+	RB_REMOVE(key_bindings, &table->key_bindings, bd);
+	cmd_list_free(bd->cmdlist);
+	free((void *)bd->note);
+	free(bd);
+}
+
 struct key_table *
 key_bindings_get_table(const char *name, int create)
 {
@@ -133,11 +135,8 @@ key_bindings_unref_table(struct key_table *table)
 	if (--table->references != 0)
 		return;
 
-	RB_FOREACH_SAFE(bd, key_bindings, &table->key_bindings, bd1) {
-		RB_REMOVE(key_bindings, &table->key_bindings, bd);
-		cmd_list_free(bd->cmdlist);
-		free(bd);
-	}
+	RB_FOREACH_SAFE(bd, key_bindings, &table->key_bindings, bd1)
+		key_bindings_free(table, bd);
 
 	free((void *)table->name);
 	free(table);
@@ -165,24 +164,22 @@ key_bindings_next(__unused struct key_table *table, struct key_binding *bd)
 }
 
 void
-key_bindings_add(const char *name, key_code key, int repeat,
+key_bindings_add(const char *name, key_code key, const char *note, int repeat,
     struct cmd_list *cmdlist)
 {
 	struct key_table	*table;
-	struct key_binding	 bd_find, *bd;
+	struct key_binding	*bd;
 
 	table = key_bindings_get_table(name, 1);
 
-	bd_find.key = (key & ~KEYC_XTERM);
-	bd = RB_FIND(key_bindings, &table->key_bindings, &bd_find);
-	if (bd != NULL) {
-		RB_REMOVE(key_bindings, &table->key_bindings, bd);
-		cmd_list_free(bd->cmdlist);
-		free(bd);
-	}
+	bd = key_bindings_get(table, key & ~KEYC_XTERM);
+	if (bd != NULL)
+		key_bindings_free(table, bd);
 
 	bd = xcalloc(1, sizeof *bd);
 	bd->key = key;
+	if (note != NULL)
+		bd->note = xstrdup(note);
 	RB_INSERT(key_bindings, &table->key_bindings, bd);
 
 	if (repeat)
@@ -194,20 +191,16 @@ void
 key_bindings_remove(const char *name, key_code key)
 {
 	struct key_table	*table;
-	struct key_binding	 bd_find, *bd;
+	struct key_binding	*bd;
 
 	table = key_bindings_get_table(name, 0);
 	if (table == NULL)
 		return;
 
-	bd_find.key = (key & ~KEYC_XTERM);
-	bd = RB_FIND(key_bindings, &table->key_bindings, &bd_find);
+	bd = key_bindings_get(table, key & ~KEYC_XTERM);
 	if (bd == NULL)
 		return;
-
-	RB_REMOVE(key_bindings, &table->key_bindings, bd);
-	cmd_list_free(bd->cmdlist);
-	free(bd);
+	key_bindings_free(table, bd);
 
 	if (RB_EMPTY(&table->key_bindings)) {
 		RB_REMOVE(key_tables, &key_tables, table);
@@ -236,87 +229,88 @@ void
 key_bindings_init(void)
 {
 	static const char *defaults[] = {
-		"bind C-b send-prefix",
-		"bind C-o rotate-window",
-		"bind C-z suspend-client",
-		"bind Space next-layout",
-		"bind ! break-pane",
-		"bind '\"' split-window",
-		"bind '#' list-buffers",
-		"bind '$' command-prompt -I'#S' \"rename-session -- '%%'\"",
-		"bind % split-window -h",
-		"bind & confirm-before -p\"kill-window #W? (y/n)\" kill-window",
-		"bind \"'\" command-prompt -pindex \"select-window -t ':%%'\"",
-		"bind ( switch-client -p",
-		"bind ) switch-client -n",
-		"bind , command-prompt -I'#W' \"rename-window -- '%%'\"",
-		"bind - delete-buffer",
-		"bind . command-prompt \"move-window -t '%%'\"",
-		"bind 0 select-window -t:=0",
-		"bind 1 select-window -t:=1",
-		"bind 2 select-window -t:=2",
-		"bind 3 select-window -t:=3",
-		"bind 4 select-window -t:=4",
-		"bind 5 select-window -t:=5",
-		"bind 6 select-window -t:=6",
-		"bind 7 select-window -t:=7",
-		"bind 8 select-window -t:=8",
-		"bind 9 select-window -t:=9",
-		"bind : command-prompt",
-		"bind \\; last-pane",
-		"bind = choose-buffer -Z",
-		"bind ? list-keys",
-		"bind D choose-client -Z",
-		"bind E select-layout -E",
-		"bind L switch-client -l",
-		"bind M select-pane -M",
-		"bind [ copy-mode",
-		"bind ] paste-buffer",
-		"bind c new-window",
-		"bind d detach-client",
-		"bind f command-prompt \"find-window -Z -- '%%'\"",
-		"bind i display-message",
-		"bind l last-window",
-		"bind m select-pane -m",
-		"bind n next-window",
-		"bind o select-pane -t:.+",
-		"bind p previous-window",
-		"bind q display-panes",
-		"bind r refresh-client",
-		"bind s choose-tree -Zs",
-		"bind t clock-mode",
-		"bind w choose-tree -Zw",
-		"bind x confirm-before -p\"kill-pane #P? (y/n)\" kill-pane",
-		"bind z resize-pane -Z",
-		"bind '{' swap-pane -U",
-		"bind '}' swap-pane -D",
-		"bind '~' show-messages",
-		"bind PPage copy-mode -u",
-		"bind -r Up select-pane -U",
-		"bind -r Down select-pane -D",
-		"bind -r Left select-pane -L",
-		"bind -r Right select-pane -R",
-		"bind M-1 select-layout even-horizontal",
-		"bind M-2 select-layout even-vertical",
-		"bind M-3 select-layout main-horizontal",
-		"bind M-4 select-layout main-vertical",
-		"bind M-5 select-layout tiled",
-		"bind M-n next-window -a",
-		"bind M-o rotate-window -D",
-		"bind M-p previous-window -a",
-		"bind -r S-Up refresh-client -U 10",
-		"bind -r S-Down refresh-client -D 10",
-		"bind -r S-Left refresh-client -L 10",
-		"bind -r S-Right refresh-client -R 10",
-		"bind -r DC refresh-client -c",
-		"bind -r M-Up resize-pane -U 5",
-		"bind -r M-Down resize-pane -D 5",
-		"bind -r M-Left resize-pane -L 5",
-		"bind -r M-Right resize-pane -R 5",
-		"bind -r C-Up resize-pane -U",
-		"bind -r C-Down resize-pane -D",
-		"bind -r C-Left resize-pane -L",
-		"bind -r C-Right resize-pane -R",
+		"bind -N 'Send the prefix key' C-b send-prefix",
+		"bind -N 'Rotate through the panes' C-o rotate-window",
+		"bind -N 'Suspend the current client' C-z suspend-client",
+		"bind -N 'Select next layout' Space next-layout",
+		"bind -N 'Break pane to a new window' ! break-pane",
+		"bind -N 'Split window vertically' '\"' split-window",
+		"bind -N 'List all paste buffers' '#' list-buffers",
+		"bind -N 'Rename current session' '$' command-prompt -I'#S' \"rename-session -- '%%'\"",
+		"bind -N 'Split window horizontally' % split-window -h",
+		"bind -N 'Kill current window' & confirm-before -p\"kill-window #W? (y/n)\" kill-window",
+		"bind -N 'Prompt for window index to select' \"'\" command-prompt -pindex \"select-window -t ':%%'\"",
+		"bind -N 'Switch to previous client' ( switch-client -p",
+		"bind -N 'Switch to next client' ) switch-client -n",
+		"bind -N 'Rename current window' , command-prompt -I'#W' \"rename-window -- '%%'\"",
+		"bind -N 'Delete the most recent paste buffer' - delete-buffer",
+		"bind -N 'Move the current window' . command-prompt \"move-window -t '%%'\"",
+		"bind -N 'Describe key binding' '/' command-prompt -kpkey 'list-keys -1N \"%%%\"'",
+		"bind -N 'Select window 0' 0 select-window -t:=0",
+		"bind -N 'Select window 1' 1 select-window -t:=1",
+		"bind -N 'Select window 2' 2 select-window -t:=2",
+		"bind -N 'Select window 3' 3 select-window -t:=3",
+		"bind -N 'Select window 4' 4 select-window -t:=4",
+		"bind -N 'Select window 5' 5 select-window -t:=5",
+		"bind -N 'Select window 6' 6 select-window -t:=6",
+		"bind -N 'Select window 7' 7 select-window -t:=7",
+		"bind -N 'Select window 8' 8 select-window -t:=8",
+		"bind -N 'Select window 9' 9 select-window -t:=9",
+		"bind -N 'Prompt for a command' : command-prompt",
+		"bind -N 'Move to the previously active pane' \\; last-pane",
+		"bind -N 'Choose a paste buffer from a list' = choose-buffer -Z",
+		"bind -N 'List key bindings' ? list-keys -N",
+		"bind -N 'Choose a client from a list' D choose-client -Z",
+		"bind -N 'Spread panes out evenly' E select-layout -E",
+		"bind -N 'Switch to the last client' L switch-client -l",
+		"bind -N 'Clear the marked pane' M select-pane -M",
+		"bind -N 'Enter copy mode' [ copy-mode",
+		"bind -N 'Paste the most recent paste buffer' ] paste-buffer",
+		"bind -N 'Create a new window' c new-window",
+		"bind -N 'Detach the current client' d detach-client",
+		"bind -N 'Search for a pane' f command-prompt \"find-window -Z -- '%%'\"",
+		"bind -N 'Display window information' i display-message",
+		"bind -N 'Select the previously current window' l last-window",
+		"bind -N 'Toggle the marked pane' m select-pane -m",
+		"bind -N 'Select the next window' n next-window",
+		"bind -N 'Select the next pane' o select-pane -t:.+",
+		"bind -N 'Select the previous pane' p previous-window",
+		"bind -N 'Display pane numbers' q display-panes",
+		"bind -N 'Redraw the current client' r refresh-client",
+		"bind -N 'Choose a session from a list' s choose-tree -Zs",
+		"bind -N 'Show a clock' t clock-mode",
+		"bind -N 'Choose a window from a list' w choose-tree -Zw",
+		"bind -N 'Kill the active pane' x confirm-before -p\"kill-pane #P? (y/n)\" kill-pane",
+		"bind -N 'Zoom the active pane' z resize-pane -Z",
+		"bind -N 'Swap the active pane with the pane above' '{' swap-pane -U",
+		"bind -N 'Swap the active pane with the pane below' '}' swap-pane -D",
+		"bind -N 'Show messages' '~' show-messages",
+		"bind -N 'Enter copy mode and scroll up' PPage copy-mode -u",
+		"bind -N 'Select the pane above the active pane' -r Up select-pane -U",
+		"bind -N 'Select the pane below the active pane' -r Down select-pane -D",
+		"bind -N 'Select the pane to the left of the active pane' -r Left select-pane -L",
+		"bind -N 'Select the pane to the right of the active pane' -r Right select-pane -R",
+		"bind -N 'Set the even-horizontal layout' M-1 select-layout even-horizontal",
+		"bind -N 'Set the even-vertical layout' M-2 select-layout even-vertical",
+		"bind -N 'Set the main-horizontal layout' M-3 select-layout main-horizontal",
+		"bind -N 'Set the main-vertical layout' M-4 select-layout main-vertical",
+		"bind -N 'Select the tiled layout' M-5 select-layout tiled",
+		"bind -N 'Select the next window with an alert' M-n next-window -a",
+		"bind -N 'Rotate through the panes in reverse' M-o rotate-window -D",
+		"bind -N 'Select the previous window with an alert' M-p previous-window -a",
+		"bind -N 'Move the visible part of the window up' -r S-Up refresh-client -U 10",
+		"bind -N 'Move the visible part of the window down' -r S-Down refresh-client -D 10",
+		"bind -N 'Move the visible part of the window left' -r S-Left refresh-client -L 10",
+		"bind -N 'Move the visible part of the window right' -r S-Right refresh-client -R 10",
+		"bind -N 'Reset so the visible part of the window follows the cursor' -r DC refresh-client -c",
+		"bind -N 'Resize the pane up by 5' -r M-Up resize-pane -U 5",
+		"bind -N 'Resize the pane down by 5' -r M-Down resize-pane -D 5",
+		"bind -N 'Resize the pane left by 5' -r M-Left resize-pane -L 5",
+		"bind -N 'Resize the pane right by 5' -r M-Right resize-pane -R 5",
+		"bind -N 'Resize the pane up' -r C-Up resize-pane -U",
+		"bind -N 'Resize the pane down' -r C-Down resize-pane -D",
+		"bind -N 'Resize the pane left' -r C-Left resize-pane -L",
+		"bind -N 'Resize the pane right' -r C-Right resize-pane -R",
 
 		"bind -n MouseDown1Pane select-pane -t=\\; send-keys -M",
 		"bind -n MouseDrag1Border resize-pane -M",
@@ -326,7 +320,6 @@ key_bindings_init(void)
 		"bind -n MouseDrag1Pane if -Ft= '#{mouse_any_flag}' 'if -Ft= \"#{pane_in_mode}\" \"copy-mode -M\" \"send-keys -M\"' 'copy-mode -M'",
 		"bind -n WheelUpPane if -Ft= '#{mouse_any_flag}' 'send-keys -M' 'if -Ft= \"#{pane_in_mode}\" \"send-keys -M\" \"copy-mode -et=\"'",
 
-		"bind -n MouseDown3StatusRight display-menu -t= -xM -yS -T \"#[align=centre]#{client_name}\" " DEFAULT_CLIENT_MENU,
 		"bind -n MouseDown3StatusLeft display-menu -t= -xM -yS -T \"#[align=centre]#{session_name}\" " DEFAULT_SESSION_MENU,
 		"bind -n MouseDown3Status display-menu -t= -xW -yS -T \"#[align=centre]#{window_index}:#{window_name}\" " DEFAULT_WINDOW_MENU,
 		"bind < display-menu -xW -yS -T \"#[align=centre]#{window_index}:#{window_name}\" " DEFAULT_WINDOW_MENU,
@@ -403,6 +396,8 @@ key_bindings_init(void)
 		"bind -Tcopy-mode C-Up send -X scroll-up",
 		"bind -Tcopy-mode C-Down send -X scroll-down",
 
+		"bind -Tcopy-mode-vi '#' send -FX search-backward '#{copy_cursor_word}'",
+		"bind -Tcopy-mode-vi * send -FX search-forward '#{copy_cursor_word}'",
 		"bind -Tcopy-mode-vi C-c send -X cancel",
 		"bind -Tcopy-mode-vi C-d send -X halfpage-down",
 		"bind -Tcopy-mode-vi C-e send -X scroll-down",
@@ -509,12 +504,16 @@ key_bindings_dispatch(struct key_binding *bd, struct cmdq_item *item,
 	struct cmdq_item	*new_item;
 	int			 readonly;
 
-	readonly = 1;
-	TAILQ_FOREACH(cmd, &bd->cmdlist->list, qentry) {
-		if (!(cmd->entry->flags & CMD_READONLY))
-			readonly = 0;
+	if (c == NULL || (~c->flags & CLIENT_READONLY))
+		readonly = 1;
+	else {
+		readonly = 1;
+		TAILQ_FOREACH(cmd, &bd->cmdlist->list, qentry) {
+			if (~cmd->entry->flags & CMD_READONLY)
+				readonly = 0;
+		}
 	}
-	if (!readonly && (c->flags & CLIENT_READONLY))
+	if (!readonly)
 		new_item = cmdq_get_callback(key_bindings_read_only, NULL);
 	else {
 		new_item = cmdq_get_command(bd->cmdlist, fs, m, 0);
@@ -522,8 +521,8 @@ key_bindings_dispatch(struct key_binding *bd, struct cmdq_item *item,
 			new_item->shared->flags |= CMDQ_SHARED_REPEAT;
 	}
 	if (item != NULL)
-		cmdq_insert_after(item, new_item);
+		new_item = cmdq_insert_after(item, new_item);
 	else
-		cmdq_append(c, new_item);
+		new_item = cmdq_append(c, new_item);
 	return (new_item);
 }

key-string.c

@@ -159,7 +159,7 @@ key_string_get_modifiers(const char **string)
 key_code
 key_string_lookup_string(const char *string)
 {
-	static const char	*other = "!#()+,-.0123456789:;<=>?'\r\t";
+	static const char	*other = "!#()+,-.0123456789:;<=>'\r\t";
 	key_code		 key;
 	u_int			 u;
 	key_code		 modifiers;
@@ -196,7 +196,7 @@ key_string_lookup_string(const char *string)
 	/* Is this a standard ASCII key? */
 	if (string[1] == '\0' && (u_char)string[0] <= 127) {
 		key = (u_char)string[0];
-		if (key < 32 || key == 127)
+		if (key < 32)
 			return (KEYC_UNKNOWN);
 	} else {
 		/* Try as a UTF-8 key. */
@@ -226,6 +226,8 @@ key_string_lookup_string(const char *string)
 			key -= 64;
 		else if (key == 32)
 			key = 0;
+		else if (key == '?')
+			key = 127;
 		else if (key == 63)
 			key = KEYC_BSPACE;
 		else
@@ -329,7 +331,7 @@ key_string_lookup_key(key_code key)
 	}
 
 	/* Invalid keys are errors. */
-	if (key == 127 || key > 255) {
+	if (key > 255) {
 		snprintf(out, sizeof out, "Invalid#%llx", key);
 		return (out);
 	}
@@ -343,7 +345,9 @@ key_string_lookup_key(key_code key)
 	} else if (key >= 32 && key <= 126) {
 		tmp[0] = key;
 		tmp[1] = '\0';
-	} else if (key >= 128)
+	} else if (key == 127)
+		xsnprintf(tmp, sizeof tmp, "C-?");
+	else if (key >= 128)
 		xsnprintf(tmp, sizeof tmp, "\\%llo", key);
 
 	strlcat(out, tmp, sizeof out);

layout-custom.c

@@ -221,7 +221,7 @@ layout_parse(struct window *w, const char *layout)
 		return (-1);
 
 	/* Resize to the layout size. */
-	window_resize(w, lc->sx, lc->sy);
+	window_resize(w, lc->sx, lc->sy, -1, -1);
 
 	/* Destroy the old layout and swap to the new. */
 	layout_free_cell(w->layout_root);

layout-set.c

@@ -163,7 +163,7 @@ layout_set_even(struct window *w, enum layout_type type)
 
 	layout_print_cell(w->layout_root, __func__, 1);
 
-	window_resize(w, lc->sx, lc->sy);
+	window_resize(w, lc->sx, lc->sy, -1, -1);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }
@@ -262,7 +262,7 @@ layout_set_main_h(struct window *w)
 
 	layout_print_cell(w->layout_root, __func__, 1);
 
-	window_resize(w, lc->sx, lc->sy);
+	window_resize(w, lc->sx, lc->sy, -1, -1);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }
@@ -349,7 +349,7 @@ layout_set_main_v(struct window *w)
 
 	layout_print_cell(w->layout_root, __func__, 1);
 
-	window_resize(w, lc->sx, lc->sy);
+	window_resize(w, lc->sx, lc->sy, -1, -1);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }
@@ -458,7 +458,7 @@ layout_set_tiled(struct window *w)
 
 	layout_print_cell(w->layout_root, __func__, 1);
 
-	window_resize(w, lc->sx, lc->sy);
+	window_resize(w, lc->sx, lc->sy, -1, -1);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }

log.c

@@ -130,6 +130,9 @@ log_debug(const char *msg, ...)
 {
 	va_list	ap;
 
+	if (log_file == NULL)
+		return;
+
 	va_start(ap, msg);
 	log_vwrite(msg, ap);
 	va_end(ap);

mode-tree.c

@@ -39,7 +39,7 @@ struct mode_tree_data {
 
 	const char		**sort_list;
 	u_int			  sort_size;
-	u_int			  sort_type;
+	struct mode_tree_sort_criteria sort_crit;
 
 	mode_tree_build_cb        buildcb;
 	mode_tree_draw_cb         drawcb;
@@ -334,7 +334,6 @@ mode_tree_start(struct window_pane *wp, struct args *args,
 
 	mtd->sort_list = sort_list;
 	mtd->sort_size = sort_size;
-	mtd->sort_type = 0;
 
 	mtd->preview = !args_has(args, 'N');
 
@@ -342,9 +341,10 @@ mode_tree_start(struct window_pane *wp, struct args *args,
 	if (sort != NULL) {
 		for (i = 0; i < sort_size; i++) {
 			if (strcasecmp(sort, sort_list[i]) == 0)
-				mtd->sort_type = i;
+				mtd->sort_crit.field = i;
 		}
 	}
+	mtd->sort_crit.reversed = args_has(args, 'r');
 
 	if (args_has(args, 'f'))
 		mtd->filter = xstrdup(args_get(args, 'f'));
@@ -392,10 +392,10 @@ mode_tree_build(struct mode_tree_data *mtd)
 	TAILQ_CONCAT(&mtd->saved, &mtd->children, entry);
 	TAILQ_INIT(&mtd->children);
 
-	mtd->buildcb(mtd->modedata, mtd->sort_type, &tag, mtd->filter);
+	mtd->buildcb(mtd->modedata, &mtd->sort_crit, &tag, mtd->filter);
 	mtd->no_matches = TAILQ_EMPTY(&mtd->children);
 	if (mtd->no_matches)
-		mtd->buildcb(mtd->modedata, mtd->sort_type, &tag, NULL);
+		mtd->buildcb(mtd->modedata, &mtd->sort_crit, &tag, NULL);
 
 	mode_tree_free_items(&mtd->saved);
 	TAILQ_INIT(&mtd->saved);
@@ -598,6 +598,8 @@ mode_tree_draw(struct mode_tree_data *mtd)
 		xasprintf(&text, "%-*s%s%s%s: ", keylen, key, start, mti->name,
 		    tag);
 		width = utf8_cstrwidth(text);
+		if (width > w)
+			width = w;
 		free(start);
 
 		if (mti->tagged) {
@@ -607,11 +609,11 @@ mode_tree_draw(struct mode_tree_data *mtd)
 
 		if (i != mtd->current) {
 			screen_write_clearendofline(&ctx, 8);
-			screen_write_puts(&ctx, &gc0, "%s", text);
+			screen_write_nputs(&ctx, w, &gc0, "%s", text);
 			format_draw(&ctx, &gc0, w - width, mti->text, NULL);
 		} else {
 			screen_write_clearendofline(&ctx, gc.bg);
-			screen_write_puts(&ctx, &gc, "%s", text);
+			screen_write_nputs(&ctx, w, &gc, "%s", text);
 			format_draw(&ctx, &gc, w - width, mti->text, NULL);
 		}
 		free(text);
@@ -634,8 +636,9 @@ mode_tree_draw(struct mode_tree_data *mtd)
 	screen_write_cursormove(&ctx, 0, h, 0);
 	screen_write_box(&ctx, w, sy - h);
 
-	xasprintf(&text, " %s (sort: %s)", mti->name,
-	    mtd->sort_list[mtd->sort_type]);
+	xasprintf(&text, " %s (sort: %s%s)", mti->name,
+	    mtd->sort_list[mtd->sort_crit.field],
+	    mtd->sort_crit.reversed ? ", reversed" : "");
 	if (w - 2 >= strlen(text)) {
 		screen_write_cursormove(&ctx, 1, h, 0);
 		screen_write_puts(&ctx, &gc0, "%s", text);
@@ -993,9 +996,13 @@ mode_tree_key(struct mode_tree_data *mtd, struct client *c, key_code *key,
 		}
 		break;
 	case 'O':
-		mtd->sort_type++;
-		if (mtd->sort_type == mtd->sort_size)
-			mtd->sort_type = 0;
+		mtd->sort_crit.field++;
+		if (mtd->sort_crit.field == mtd->sort_size)
+			mtd->sort_crit.field = 0;
+		mode_tree_build(mtd);
+		break;
+	case 'r':
+		mtd->sort_crit.reversed = !mtd->sort_crit.reversed;
 		mode_tree_build(mtd);
 		break;
 	case KEYC_LEFT:

notify.c

@@ -89,9 +89,7 @@ notify_insert_hook(struct cmdq_item *item, struct notify_entry *ne)
 		new_item = cmdq_get_command(cmdlist, &fs, NULL, CMDQ_NOHOOKS);
 		cmdq_format(new_item, "hook", "%s", ne->name);
 		notify_hook_formats(new_item, s, w, ne->pane);
-
-		cmdq_insert_after(item, new_item);
-		item = new_item;
+		item = cmdq_insert_after(item, new_item);
 
 		a = options_array_next(a);
 	}

options-table.c

@@ -63,13 +63,16 @@ static const char *options_table_set_clipboard_list[] = {
 	"off", "external", "on", NULL
 };
 static const char *options_table_window_size_list[] = {
-	"largest", "smallest", "manual", NULL
+	"largest", "smallest", "manual", "latest", NULL
 };
 
 /* Status line format. */
 #define OPTIONS_TABLE_STATUS_FORMAT1 \
 	"#[align=left range=left #{status-left-style}]" \
-	"#{T;=/#{status-left-length}:status-left}#[norange default]" \
+	"#[push-default]" \
+	"#{T;=/#{status-left-length}:status-left}" \
+	"#[pop-default]" \
+	"#[norange default]" \
 	"#[list=on align=#{status-justify}]" \
 	"#[list=left-marker]<#[list=right-marker]>#[list=on]" \
 	"#{W:" \
@@ -91,7 +94,9 @@ static const char *options_table_window_size_list[] = {
 				"}" \
 			"}" \
 		"]" \
+		"#[push-default]" \
 		"#{T:window-status-format}" \
+		"#[pop-default]" \
 		"#[norange default]" \
 		"#{?window_end_flag,,#{window-status-separator}}" \
 	"," \
@@ -116,12 +121,17 @@ static const char *options_table_window_size_list[] = {
 				"}" \
 			"}" \
 		"]" \
+		"#[push-default]" \
 		"#{T:window-status-current-format}" \
+		"#[pop-default]" \
 		"#[norange list=on default]" \
 		"#{?window_end_flag,,#{window-status-separator}}" \
 	"}" \
 	"#[nolist align=right range=right #{status-right-style}]" \
-	"#{T;=/#{status-right-length}:status-right}#[norange default]"
+	"#[push-default]" \
+	"#{T;=/#{status-right-length}:status-right}" \
+	"#[pop-default]" \
+	"#[norange default]"
 #define OPTIONS_TABLE_STATUS_FORMAT2 \
 	"#[align=centre]#{P:#{?pane_active,#[reverse],}" \
 	"#{pane_index}[#{pane_width}x#{pane_height}]#[default] }"
@@ -142,6 +152,12 @@ static const char *options_table_status_format_default[] = {
 /* Top-level options. */
 const struct options_table_entry options_table[] = {
 	/* Server options. */
+	{ .name = "backspace",
+	  .type = OPTIONS_TABLE_KEY,
+	  .scope = OPTIONS_TABLE_SERVER,
+	  .default_num = '\177',
+	},
+
 	{ .name = "buffer-limit",
 	  .type = OPTIONS_TABLE_NUMBER,
 	  .scope = OPTIONS_TABLE_SERVER,
@@ -719,7 +735,7 @@ const struct options_table_entry options_table[] = {
 	  .type = OPTIONS_TABLE_CHOICE,
 	  .scope = OPTIONS_TABLE_WINDOW,
 	  .choices = options_table_window_size_list,
-	  .default_num = WINDOW_SIZE_SMALLEST
+	  .default_num = WINDOW_SIZE_LATEST
 	},
 
 	{ .name = "window-style",

options.c

@@ -296,6 +296,7 @@ options_remove(struct options_entry *o)
 	else
 		options_value_free(o, &o->value);
 	RB_REMOVE(options_tree, &oo->tree, o);
+	free((void *)o->name);
 	free(o);
 }
 
@@ -320,6 +321,17 @@ options_array_item(struct options_entry *o, u_int idx)
 	return (RB_FIND(options_array, &o->value.array, &a));
 }
 
+static struct options_array_item *
+options_array_new(struct options_entry *o, u_int idx)
+{
+	struct options_array_item	*a;
+
+	a = xcalloc(1, sizeof *a);
+	a->index = idx;
+	RB_INSERT(options_array, &o->value.array, a);
+	return (a);
+}
+
 static void
 options_array_free(struct options_entry *o, struct options_array_item *a)
 {
@@ -367,7 +379,14 @@ options_array_set(struct options_entry *o, u_int idx, const char *value,
 		return (-1);
 	}
 
-	if (OPTIONS_IS_COMMAND(o) && value != NULL) {
+	if (value == NULL) {
+		a = options_array_item(o, idx);
+		if (a != NULL)
+			options_array_free(o, a);
+		return (0);
+	}
+
+	if (OPTIONS_IS_COMMAND(o)) {
 		pr = cmd_parse_from_string(value, NULL);
 		switch (pr->status) {
 		case CMD_PARSE_EMPTY:
@@ -383,34 +402,33 @@ options_array_set(struct options_entry *o, u_int idx, const char *value,
 		case CMD_PARSE_SUCCESS:
 			break;
 		}
-	}
 
-	a = options_array_item(o, idx);
-	if (value == NULL) {
-		if (a != NULL)
-			options_array_free(o, a);
+		a = options_array_item(o, idx);
+		if (a == NULL)
+			a = options_array_new(o, idx);
+		else
+			options_value_free(o, &a->value);
+		a->value.cmdlist = pr->cmdlist;
 		return (0);
 	}
 
 	if (OPTIONS_IS_STRING(o)) {
+		a = options_array_item(o, idx);
 		if (a != NULL && append)
 			xasprintf(&new, "%s%s", a->value.string, value);
 		else
 			new = xstrdup(value);
+		if (a == NULL)
+			a = options_array_new(o, idx);
+		else
+			options_value_free(o, &a->value);
+		a->value.string = new;
+		return (0);
 	}
 
-	if (a == NULL) {
-		a = xcalloc(1, sizeof *a);
-		a->index = idx;
-		RB_INSERT(options_array, &o->value.array, a);
-	} else
-		options_value_free(o, &a->value);
-
-	if (OPTIONS_IS_STRING(o))
-		a->value.string = new;
-	else if (OPTIONS_IS_COMMAND(o))
-		a->value.cmdlist = pr->cmdlist;
-	return (0);
+	if (cause != NULL)
+		*cause = xstrdup("wrong array type");
+	return (-1);
 }
 
 int
@@ -592,7 +610,7 @@ options_match(const char *s, int *idx, int *ambiguous)
 
 struct options_entry *
 options_match_get(struct options *oo, const char *s, int *idx, int only,
-    int* ambiguous)
+    int *ambiguous)
 {
 	char			*name;
 	struct options_entry	*o;

proc.c

@@ -181,7 +181,7 @@ proc_start(const char *name)
 		memset(&u, 0, sizeof u);
 
 	log_debug("%s started (%ld): version %s, socket %s, protocol %d", name,
-	    (long)getpid(), VERSION, socket_path, PROTOCOL_VERSION);
+	    (long)getpid(), getversion(), socket_path, PROTOCOL_VERSION);
 	log_debug("on %s %s %s; libevent %s (%s)", u.sysname, u.release,
 	    u.version, event_get_version(), event_get_method());
 

regsub.c

@@ -107,6 +107,12 @@ regsub(const char *pattern, const char *with, const char *text, int flags)
 			start += m[0].rm_eo + 1;
 			empty = 1;
 		}
+
+		/* Stop now if anchored to start. */
+		if (*pattern == '^') {
+			regsub_copy(&buf, &len, text, start, end);
+			break;
+		}
 	}
 	buf[len] = '\0';
 

resize.c

@@ -23,7 +23,7 @@
 #include "tmux.h"
 
 void
-resize_window(struct window *w, u_int sx, u_int sy)
+resize_window(struct window *w, u_int sx, u_int sy, int xpixel, int ypixel)
 {
 	int	zoomed;
 
@@ -50,7 +50,7 @@ resize_window(struct window *w, u_int sx, u_int sy)
 		sx = w->layout_root->sx;
 	if (sy < w->layout_root->sy)
 		sy = w->layout_root->sy;
-	window_resize(w, sx, sy);
+	window_resize(w, sx, sy, xpixel, ypixel);
 	log_debug("%s: @%u resized to %u,%u; layout %u,%u", __func__, w->id,
 	    sx, sy, w->layout_root->sx, w->layout_root->sy);
 
@@ -66,68 +66,144 @@ resize_window(struct window *w, u_int sx, u_int sy)
 static int
 ignore_client_size(struct client *c)
 {
+	struct client	*loop;
+
 	if (c->session == NULL)
 		return (1);
 	if (c->flags & CLIENT_NOSIZEFLAGS)
 		return (1);
+	if (c->flags & CLIENT_READONLY) {
+		/*
+		 * Ignore readonly clients if there are any attached clients
+		 * that aren't readonly.
+		 */
+		TAILQ_FOREACH (loop, &clients, entry) {
+			if (loop->session == NULL)
+				continue;
+			if (loop->flags & CLIENT_NOSIZEFLAGS)
+				continue;
+			if (~loop->flags & CLIENT_READONLY)
+				return (1);
+		}
+	}
 	if ((c->flags & CLIENT_CONTROL) && (~c->flags & CLIENT_SIZECHANGED))
 		return (1);
 	return (0);
 }
 
 void
-default_window_size(struct session *s, struct window *w, u_int *sx, u_int *sy,
-    int type)
+default_window_size(struct client *c, struct session *s, struct window *w,
+    u_int *sx, u_int *sy, u_int *xpixel, u_int *ypixel, int type)
 {
-	struct client	*c;
-	u_int		 cx, cy;
+	struct client	*loop;
+	u_int		 cx, cy, n;
 	const char	*value;
 
 	if (type == -1)
 		type = options_get_number(global_w_options, "window-size");
-	if (type == WINDOW_SIZE_MANUAL)
-		goto manual;
-
-	if (type == WINDOW_SIZE_LARGEST) {
+	switch (type) {
+	case WINDOW_SIZE_LARGEST:
 		*sx = *sy = 0;
-		TAILQ_FOREACH(c, &clients, entry) {
-			if (ignore_client_size(c))
+		*xpixel = *ypixel = 0;
+		TAILQ_FOREACH(loop, &clients, entry) {
+			if (ignore_client_size(loop))
 				continue;
-			if (w != NULL && !session_has(c->session, w))
+			if (w != NULL && !session_has(loop->session, w))
 				continue;
-			if (w == NULL && c->session != s)
+			if (w == NULL && loop->session != s)
 				continue;
 
-			cx = c->tty.sx;
-			cy = c->tty.sy - status_line_size(c);
+			cx = loop->tty.sx;
+			cy = loop->tty.sy - status_line_size(loop);
 
 			if (cx > *sx)
 				*sx = cx;
 			if (cy > *sy)
 				*sy = cy;
+
+			if (loop->tty.xpixel > *xpixel &&
+			    loop->tty.ypixel > *ypixel) {
+				*xpixel = loop->tty.xpixel;
+				*ypixel = loop->tty.ypixel;
+			}
 		}
 		if (*sx == 0 || *sy == 0)
 			goto manual;
-	} else {
+		break;
+	case WINDOW_SIZE_SMALLEST:
 		*sx = *sy = UINT_MAX;
-		TAILQ_FOREACH(c, &clients, entry) {
-			if (ignore_client_size(c))
+		*xpixel = *ypixel = 0;
+		TAILQ_FOREACH(loop, &clients, entry) {
+			if (ignore_client_size(loop))
 				continue;
-			if (w != NULL && !session_has(c->session, w))
+			if (w != NULL && !session_has(loop->session, w))
 				continue;
-			if (w == NULL && c->session != s)
+			if (w == NULL && loop->session != s)
 				continue;
 
-			cx = c->tty.sx;
-			cy = c->tty.sy - status_line_size(c);
+			cx = loop->tty.sx;
+			cy = loop->tty.sy - status_line_size(loop);
 
 			if (cx < *sx)
 				*sx = cx;
 			if (cy < *sy)
 				*sy = cy;
+
+			if (loop->tty.xpixel > *xpixel &&
+			    loop->tty.ypixel > *ypixel) {
+				*xpixel = loop->tty.xpixel;
+				*ypixel = loop->tty.ypixel;
+			}
 		}
 		if (*sx == UINT_MAX || *sy == UINT_MAX)
 			goto manual;
+		break;
+	case WINDOW_SIZE_LATEST:
+		if (c != NULL && !ignore_client_size(c)) {
+			*sx = c->tty.sx;
+			*sy = c->tty.sy - status_line_size(c);
+			*xpixel = c->tty.xpixel;
+		        *ypixel = c->tty.ypixel;
+		} else {
+			if (w == NULL)
+				goto manual;
+			n = 0;
+			TAILQ_FOREACH(loop, &clients, entry) {
+				if (!ignore_client_size(loop) &&
+				    session_has(loop->session, w)) {
+					if (++n > 1)
+						break;
+				}
+			}
+			*sx = *sy = UINT_MAX;
+			*xpixel = *ypixel = 0;
+			TAILQ_FOREACH(loop, &clients, entry) {
+				if (ignore_client_size(loop))
+					continue;
+				if (n > 1 && loop != w->latest)
+					continue;
+				s = loop->session;
+
+				cx = loop->tty.sx;
+				cy = loop->tty.sy - status_line_size(loop);
+
+				if (cx < *sx)
+					*sx = cx;
+				if (cy < *sy)
+					*sy = cy;
+
+				if (loop->tty.xpixel > *xpixel &&
+				    loop->tty.ypixel > *ypixel) {
+					*xpixel = loop->tty.xpixel;
+					*ypixel = loop->tty.ypixel;
+				}
+			}
+			if (*sx == UINT_MAX || *sy == UINT_MAX)
+				goto manual;
+		}
+		break;
+	case WINDOW_SIZE_MANUAL:
+		goto manual;
 	}
 	goto done;
 
@@ -149,14 +225,145 @@ done:
 		*sy = WINDOW_MAXIMUM;
 }
 
+void
+recalculate_size(struct window *w)
+{
+	struct session	*s;
+	struct client	*c;
+	u_int		 sx, sy, cx, cy, xpixel = 0, ypixel = 0, n;
+	int		 type, current, has, changed;
+
+	if (w->active == NULL)
+		return;
+	log_debug("%s: @%u is %u,%u", __func__, w->id, w->sx, w->sy);
+
+	type = options_get_number(w->options, "window-size");
+	current = options_get_number(w->options, "aggressive-resize");
+
+	changed = 1;
+	switch (type) {
+	case WINDOW_SIZE_LARGEST:
+		sx = sy = 0;
+		TAILQ_FOREACH(c, &clients, entry) {
+			if (ignore_client_size(c))
+				continue;
+			s = c->session;
+
+			if (current)
+				has = (s->curw->window == w);
+			else
+				has = session_has(s, w);
+			if (!has)
+				continue;
+
+			cx = c->tty.sx;
+			cy = c->tty.sy - status_line_size(c);
+
+			if (cx > sx)
+				sx = cx;
+			if (cy > sy)
+				sy = cy;
+
+			if (c->tty.xpixel > xpixel && c->tty.ypixel > ypixel) {
+				xpixel = c->tty.xpixel;
+				ypixel = c->tty.ypixel;
+			}
+		}
+		if (sx == 0 || sy == 0)
+			changed = 0;
+		break;
+	case WINDOW_SIZE_SMALLEST:
+		sx = sy = UINT_MAX;
+		TAILQ_FOREACH(c, &clients, entry) {
+			if (ignore_client_size(c))
+				continue;
+			s = c->session;
+
+			if (current)
+				has = (s->curw->window == w);
+			else
+				has = session_has(s, w);
+			if (!has)
+				continue;
+
+			cx = c->tty.sx;
+			cy = c->tty.sy - status_line_size(c);
+
+			if (cx < sx)
+				sx = cx;
+			if (cy < sy)
+				sy = cy;
+
+			if (c->tty.xpixel > xpixel && c->tty.ypixel > ypixel) {
+				xpixel = c->tty.xpixel;
+				ypixel = c->tty.ypixel;
+			}
+		}
+		if (sx == UINT_MAX || sy == UINT_MAX)
+			changed = 0;
+		break;
+	case WINDOW_SIZE_LATEST:
+		n = 0;
+		TAILQ_FOREACH(c, &clients, entry) {
+			if (!ignore_client_size(c) &&
+			    session_has(c->session, w)) {
+				if (++n > 1)
+					break;
+			}
+		}
+		sx = sy = UINT_MAX;
+		TAILQ_FOREACH(c, &clients, entry) {
+			if (ignore_client_size(c))
+				continue;
+			if (n > 1 && c != w->latest)
+				continue;
+			s = c->session;
+
+			if (current)
+				has = (s->curw->window == w);
+			else
+				has = session_has(s, w);
+			if (!has)
+				continue;
+
+			cx = c->tty.sx;
+			cy = c->tty.sy - status_line_size(c);
+
+			if (cx < sx)
+				sx = cx;
+			if (cy < sy)
+				sy = cy;
+
+			if (c->tty.xpixel > xpixel && c->tty.ypixel > ypixel) {
+				xpixel = c->tty.xpixel;
+				ypixel = c->tty.ypixel;
+			}
+		}
+		if (sx == UINT_MAX || sy == UINT_MAX)
+			changed = 0;
+		break;
+	case WINDOW_SIZE_MANUAL:
+		changed = 0;
+		break;
+	}
+	if (changed && w->sx == sx && w->sy == sy)
+		changed = 0;
+
+	if (!changed) {
+		tty_update_window_offset(w);
+		return;
+	}
+	log_debug("%s: @%u changed to %u,%u (%ux%u)", __func__, w->id, sx, sy,
+	    xpixel, ypixel);
+	resize_window(w, sx, sy, xpixel, ypixel);
+}
+
 void
 recalculate_sizes(void)
 {
 	struct session	*s;
 	struct client	*c;
 	struct window	*w;
-	u_int		 sx, sy, cx, cy;
-	int		 type, current, has, changed;
 
 	/*
 	 * Clear attached count and update saved status line information for
@@ -172,85 +379,18 @@ recalculate_sizes(void)
 	 * client.
 	 */
 	TAILQ_FOREACH(c, &clients, entry) {
+		s = c->session;
+		if (s != NULL && !(c->flags & CLIENT_UNATTACHEDFLAGS))
+			s->attached++;
 		if (ignore_client_size(c))
 			continue;
-		s = c->session;
 		if (c->tty.sy <= s->statuslines || (c->flags & CLIENT_CONTROL))
 			c->flags |= CLIENT_STATUSOFF;
 		else
 			c->flags &= ~CLIENT_STATUSOFF;
-		s->attached++;
 	}
 
 	/* Walk each window and adjust the size. */
-	RB_FOREACH(w, windows, &windows) {
-		if (w->active == NULL)
-			continue;
-		log_debug("%s: @%u is %u,%u", __func__, w->id, w->sx, w->sy);
-
-		type = options_get_number(w->options, "window-size");
-		if (type == WINDOW_SIZE_MANUAL)
-			continue;
-		current = options_get_number(w->options, "aggressive-resize");
-
-		changed = 1;
-		if (type == WINDOW_SIZE_LARGEST) {
-			sx = sy = 0;
-			TAILQ_FOREACH(c, &clients, entry) {
-				if (ignore_client_size(c))
-					continue;
-				s = c->session;
-
-				if (current)
-					has = (s->curw->window == w);
-				else
-					has = session_has(s, w);
-				if (!has)
-					continue;
-
-				cx = c->tty.sx;
-				cy = c->tty.sy - status_line_size(c);
-
-				if (cx > sx)
-					sx = cx;
-				if (cy > sy)
-					sy = cy;
-			}
-			if (sx == 0 || sy == 0)
-				changed = 0;
-		} else {
-			sx = sy = UINT_MAX;
-			TAILQ_FOREACH(c, &clients, entry) {
-				if (ignore_client_size(c))
-					continue;
-				s = c->session;
-
-				if (current)
-					has = (s->curw->window == w);
-				else
-					has = session_has(s, w);
-				if (!has)
-					continue;
-
-				cx = c->tty.sx;
-				cy = c->tty.sy - status_line_size(c);
-
-				if (cx < sx)
-					sx = cx;
-				if (cy < sy)
-					sy = cy;
-			}
-			if (sx == UINT_MAX || sy == UINT_MAX)
-				changed = 0;
-		}
-		if (w->sx == sx && w->sy == sy)
-			changed = 0;
-
-		if (!changed) {
-			tty_update_window_offset(w);
-			continue;
-		}
-		log_debug("%s: @%u changed to %u,%u", __func__, w->id, sx, sy);
-		resize_window(w, sx, sy);
-	}
+	RB_FOREACH(w, windows, &windows)
+		recalculate_size(w);
 }

screen-write.c

@@ -100,7 +100,6 @@ void
 screen_write_start(struct screen_write_ctx *ctx, struct window_pane *wp,
     struct screen *s)
 {
-	char	tmp[32];
 	u_int	y;
 
 	memset(ctx, 0, sizeof *ctx);
@@ -119,12 +118,17 @@ screen_write_start(struct screen_write_ctx *ctx, struct window_pane *wp,
 	ctx->scrolled = 0;
 	ctx->bg = 8;
 
-	if (wp != NULL) {
-		snprintf(tmp, sizeof tmp, "pane %%%u (at %u,%u)", wp->id,
-		    wp->xoff, wp->yoff);
+	if (log_get_level() != 0) {
+		if (wp != NULL) {
+			log_debug("%s: size %ux%u, pane %%%u (at %u,%u)",
+			    __func__, screen_size_x(ctx->s),
+			    screen_size_y(ctx->s), wp->id, wp->xoff, wp->yoff);
+		} else {
+			log_debug("%s: size %ux%u, no pane",
+			    __func__, screen_size_x(ctx->s),
+			    screen_size_y(ctx->s));
+		}
 	}
-	log_debug("%s: size %ux%u, %s", __func__, screen_size_x(ctx->s),
-	    screen_size_y(ctx->s), wp == NULL ? "no pane" : tmp);
 }
 
 /* Finish writing. */
@@ -1234,7 +1238,6 @@ screen_write_collect_scroll(struct screen_write_ctx *ctx)
 	for (y = s->rupper; y < s->rlower; y++) {
 		cl = &ctx->list[y + 1];
 		TAILQ_CONCAT(&ctx->list[y].items, &cl->items, entry);
-		TAILQ_INIT(&cl->items);
 	}
 }
 
@@ -1323,8 +1326,7 @@ screen_write_collect_end(struct screen_write_ctx *ctx)
 		}
 	}
 
-	memcpy(&gc, &ci->gc, sizeof gc);
-	grid_view_set_cells(s->grid, s->cx, s->cy, &gc, ci->data, ci->used);
+	grid_view_set_cells(s->grid, s->cx, s->cy, &ci->gc, ci->data, ci->used);
 	screen_write_set_cursor(ctx, s->cx + ci->used, -1);
 
 	for (xx = s->cx; xx < screen_size_x(s); xx++) {
@@ -1348,8 +1350,7 @@ screen_write_collect_add(struct screen_write_ctx *ctx,
 	/*
 	 * Don't need to check that the attributes and whatnot are still the
 	 * same - input_parse will end the collection when anything that isn't
-	 * a plain character is encountered. Also nothing should make it here
-	 * that isn't a single ASCII character.
+	 * a plain character is encountered.
 	 */
 
 	collect = 1;
@@ -1635,7 +1636,8 @@ screen_write_overwrite(struct screen_write_ctx *ctx, struct grid_cell *gc,
 			grid_view_get_cell(gd, xx, s->cy, &tmp_gc);
 			if (~tmp_gc.flags & GRID_FLAG_PADDING)
 				break;
-			log_debug("%s: overwrite at %u,%u", __func__, xx, s->cy);
+			log_debug("%s: overwrite at %u,%u", __func__, xx,
+			    s->cy);
 			grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
 			done = 1;
 		}

screen.c

@@ -151,11 +151,24 @@ screen_set_cursor_colour(struct screen *s, const char *colour)
 }
 
 /* Set screen title. */
-void
+int
 screen_set_title(struct screen *s, const char *title)
 {
+	char	*cp;
+
+	if (!utf8_isvalid(title))
+		return (0);
 	free(s->title);
-	utf8_stravis(&s->title, title, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
+	s->title = xstrdup(title);
+	return (1);
+}
+
+/* Set screen path. */
+void
+screen_set_path(struct screen *s, const char *path)
+{
+	free(s->path);
+	utf8_stravis(&s->path, path, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
 }
 
 /* Push the current title onto the stack. */

server-client.c

@@ -42,11 +42,18 @@ static void	server_client_set_title(struct client *);
 static void	server_client_reset_state(struct client *);
 static int	server_client_assume_paste(struct session *);
 static void	server_client_clear_overlay(struct client *);
+static void	server_client_resize_event(int, short, void *);
 
 static void	server_client_dispatch(struct imsg *, void *);
 static void	server_client_dispatch_command(struct client *, struct imsg *);
 static void	server_client_dispatch_identify(struct client *, struct imsg *);
 static void	server_client_dispatch_shell(struct client *);
+static void	server_client_dispatch_write_ready(struct client *,
+		    struct imsg *);
+static void	server_client_dispatch_read_data(struct client *,
+		    struct imsg *);
+static void	server_client_dispatch_read_done(struct client *,
+		    struct imsg *);
 
 /* Number of attached clients. */
 u_int
@@ -194,16 +201,6 @@ server_client_create(int fd)
 
 	TAILQ_INIT(&c->queue);
 
-	c->stdin_data = evbuffer_new();
-	if (c->stdin_data == NULL)
-		fatalx("out of memory");
-	c->stdout_data = evbuffer_new();
-	if (c->stdout_data == NULL)
-		fatalx("out of memory");
-	c->stderr_data = evbuffer_new();
-	if (c->stderr_data == NULL)
-		fatalx("out of memory");
-
 	c->tty.fd = -1;
 	c->title = NULL;
 
@@ -222,6 +219,8 @@ server_client_create(int fd)
 	c->prompt_buffer = NULL;
 	c->prompt_index = 0;
 
+	RB_INIT(&c->files);
+
 	c->flags |= CLIENT_FOCUSED;
 
 	c->keytable = key_bindings_get_table("root", 1);
@@ -263,6 +262,7 @@ void
 server_client_lost(struct client *c)
 {
 	struct message_entry	*msg, *msg1;
+	struct client_file	*cf;
 
 	c->flags |= CLIENT_DEAD;
 
@@ -270,8 +270,10 @@ server_client_lost(struct client *c)
 	status_prompt_clear(c);
 	status_message_clear(c);
 
-	if (c->stdin_callback != NULL)
-		c->stdin_callback(c, 1, c->stdin_callback_data);
+	RB_FOREACH(cf, client_files, &c->files) {
+		cf->error = EINTR;
+		file_fire_done(cf);
+	}
 
 	TAILQ_REMOVE(&clients, c, entry);
 	log_debug("lost client %p", c);
@@ -285,11 +287,6 @@ server_client_lost(struct client *c)
 	free(c->ttyname);
 	free(c->term);
 
-	evbuffer_free(c->stdin_data);
-	evbuffer_free(c->stdout_data);
-	if (c->stderr_data != c->stdout_data)
-		evbuffer_free(c->stderr_data);
-
 	status_free(c);
 
 	free(c->title);
@@ -540,7 +537,8 @@ have_event:
 				where = STATUS_RIGHT;
 				break;
 			case STYLE_RANGE_WINDOW:
-				wl = winlink_find_by_index(&s->windows, sr->argument);
+				wl = winlink_find_by_index(&s->windows,
+				    sr->argument);
 				if (wl == NULL)
 					return (KEYC_UNKNOWN);
 				m->w = wl->window->id;
@@ -993,6 +991,24 @@ server_client_assume_paste(struct session *s)
 	return (0);
 }
 
+/* Has the latest client changed? */
+static void
+server_client_update_latest(struct client *c)
+{
+	struct window	*w;
+
+	if (c->session == NULL)
+		return;
+	w = c->session->curw->window;
+
+	if (w->latest == c)
+		return;
+	w->latest = c;
+
+	if (options_get_number(w->options, "window-size") == WINDOW_SIZE_LATEST)
+		recalculate_size(w);
+}
+
 /*
  * Handle data key input from client. This owns and can modify the key event it
  * is given and is responsible for freeing it.
@@ -1016,7 +1032,7 @@ server_client_key_callback(struct cmdq_item *item, void *data)
 	key_code			 key0;
 
 	/* Check the client is good to accept input. */
-	if (s == NULL || (c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
+	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
 		goto out;
 	wl = s->curw;
 
@@ -1189,6 +1205,8 @@ forward_key:
 		window_pane_key(wp, c, s, wl, key, m);
 
 out:
+	if (s != NULL)
+		server_client_update_latest(c);
 	free(event);
 	return (CMD_RETURN_NORMAL);
 }
@@ -1201,7 +1219,7 @@ server_client_handle_key(struct client *c, struct key_event *event)
 	struct cmdq_item	*item;
 
 	/* Check the client is good to accept input. */
-	if (s == NULL || (c->flags & (CLIENT_DEAD|CLIENT_SUSPENDED)) != 0)
+	if (s == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
 		return (0);
 
 	/*
@@ -1245,7 +1263,7 @@ server_client_loop(void)
 	struct window_pane	*wp;
 	struct winlink		*wl;
 	struct session		*s;
-	int			 focus;
+	int			 focus, attached, resize;
 
 	TAILQ_FOREACH(c, &clients, entry) {
 		server_client_check_exit(c);
@@ -1258,19 +1276,33 @@ server_client_loop(void)
 	/*
 	 * Any windows will have been redrawn as part of clients, so clear
 	 * their flags now. Also check pane focus and resize.
+	 *
+	 * As an optimization, panes in windows that are in an attached session
+	 * but not the current window are not resized (this reduces the amount
+	 * of work needed when, for example, resizing an X terminal a
+	 * lot). Windows in no attached session are resized immediately since
+	 * that is likely to have come from a command like split-window and be
+	 * what the user wanted.
 	 */
 	focus = options_get_number(global_options, "focus-events");
 	RB_FOREACH(w, windows, &windows) {
+		attached = resize = 0;
 		TAILQ_FOREACH(wl, &w->winlinks, wentry) {
 			s = wl->session;
-			if (s->attached != 0 && s->curw == wl)
+			if (s->attached != 0)
+				attached = 1;
+			if (s->attached != 0 && s->curw == wl) {
+				resize = 1;
 				break;
+			}
 		}
+		if (!attached)
+			resize = 1;
 		TAILQ_FOREACH(wp, &w->panes, entry) {
 			if (wp->fd != -1) {
 				if (focus)
 					server_client_check_focus(wp);
-				if (wl != NULL)
+				if (resize)
 					server_client_check_resize(wp);
 			}
 			wp->flags &= ~PANE_REDRAW;
@@ -1284,7 +1316,6 @@ static int
 server_client_resize_force(struct window_pane *wp)
 {
 	struct timeval	tv = { .tv_usec = 100000 };
-	struct winsize	ws;
 
 	/*
 	 * If we are resizing to the same size as when we entered the loop
@@ -1305,50 +1336,20 @@ server_client_resize_force(struct window_pane *wp)
 	    wp->sy <= 1)
 		return (0);
 
-	memset(&ws, 0, sizeof ws);
-	ws.ws_col = wp->sx;
-	ws.ws_row = wp->sy - 1;
-	if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
-#ifdef __sun
-		if (errno != EINVAL && errno != ENXIO)
-#endif
-		fatal("ioctl failed");
 	log_debug("%s: %%%u forcing resize", __func__, wp->id);
+	window_pane_send_resize(wp, -1);
 
 	evtimer_add(&wp->resize_timer, &tv);
 	wp->flags |= PANE_RESIZEFORCE;
 	return (1);
 }
 
-/* Resize timer event. */
+/* Resize a pane. */
 static void
-server_client_resize_event(__unused int fd, __unused short events, void *data)
+server_client_resize_pane(struct window_pane *wp)
 {
-	struct window_pane	*wp = data;
-	struct winsize		 ws;
-
-	evtimer_del(&wp->resize_timer);
-
-	if (!(wp->flags & PANE_RESIZE))
-		return;
-	if (server_client_resize_force(wp))
-		return;
-
-	memset(&ws, 0, sizeof ws);
-	ws.ws_col = wp->sx;
-	ws.ws_row = wp->sy;
-	if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
-#ifdef __sun
-		/*
-		 * Some versions of Solaris apparently can return an error when
-		 * resizing; don't know why this happens, can't reproduce on
-		 * other platforms and ignoring it doesn't seem to cause any
-		 * issues.
-		 */
-		if (errno != EINVAL && errno != ENXIO)
-#endif
-		fatal("ioctl failed");
 	log_debug("%s: %%%u resize to %u,%u", __func__, wp->id, wp->sx, wp->sy);
+	window_pane_send_resize(wp, 0);
 
 	wp->flags &= ~PANE_RESIZE;
 
@@ -1356,35 +1357,55 @@ server_client_resize_event(__unused int fd, __unused short events, void *data)
 	wp->osy = wp->sy;
 }
 
+/* Start the resize timer. */
+static void
+server_client_start_resize_timer(struct window_pane *wp)
+{
+	struct timeval	tv = { .tv_usec = 250000 };
+
+	if (!evtimer_pending(&wp->resize_timer, NULL))
+		evtimer_add(&wp->resize_timer, &tv);
+}
+
+/* Resize timer event. */
+static void
+server_client_resize_event(__unused int fd, __unused short events, void *data)
+{
+	struct window_pane	*wp = data;
+
+	evtimer_del(&wp->resize_timer);
+
+	if (~wp->flags & PANE_RESIZE)
+		return;
+	log_debug("%s: %%%u timer fired (was%s resized)", __func__, wp->id,
+	    (wp->flags & PANE_RESIZED) ? "" : " not");
+
+	if (wp->saved_grid == NULL && (wp->flags & PANE_RESIZED)) {
+		log_debug("%s: %%%u deferring timer", __func__, wp->id);
+		server_client_start_resize_timer(wp);
+	} else if (!server_client_resize_force(wp)) {
+		log_debug("%s: %%%u resizing pane", __func__, wp->id);
+		server_client_resize_pane(wp);
+	}
+	wp->flags &= ~PANE_RESIZED;
+}
+
 /* Check if pane should be resized. */
 static void
 server_client_check_resize(struct window_pane *wp)
 {
-	struct timeval	 tv = { .tv_usec = 250000 };
-
-	if (!(wp->flags & PANE_RESIZE))
+	if (~wp->flags & PANE_RESIZE)
 		return;
-	log_debug("%s: %%%u resize to %u,%u", __func__, wp->id, wp->sx, wp->sy);
 
 	if (!event_initialized(&wp->resize_timer))
 		evtimer_set(&wp->resize_timer, server_client_resize_event, wp);
 
-	/*
-	 * The first resize should happen immediately, so if the timer is not
-	 * running, do it now.
-	 */
-	if (!evtimer_pending(&wp->resize_timer, NULL))
-		server_client_resize_event(-1, 0, wp);
-
-	/*
-	 * If the pane is in the alternate screen, let the timer expire and
-	 * resize to give the application a chance to redraw. If not, keep
-	 * pushing the timer back.
-	 */
-	if (wp->saved_grid != NULL && evtimer_pending(&wp->resize_timer, NULL))
-		return;
-	evtimer_del(&wp->resize_timer);
-	evtimer_add(&wp->resize_timer, &tv);
+	if (!evtimer_pending(&wp->resize_timer, NULL)) {
+		log_debug("%s: %%%u starting timer", __func__, wp->id);
+		server_client_resize_pane(wp);
+		server_client_start_resize_timer(wp);
+	} else
+		log_debug("%s: %%%u timer running", __func__, wp->id);
 }
 
 /* Check whether pane should be focused. */
@@ -1533,17 +1554,17 @@ server_client_click_timer(__unused int fd, __unused short events, void *data)
 static void
 server_client_check_exit(struct client *c)
 {
+	struct client_file	*cf;
+
 	if (~c->flags & CLIENT_EXIT)
 		return;
 	if (c->flags & CLIENT_EXITED)
 		return;
 
-	if (EVBUFFER_LENGTH(c->stdin_data) != 0)
-		return;
-	if (EVBUFFER_LENGTH(c->stdout_data) != 0)
-		return;
-	if (EVBUFFER_LENGTH(c->stderr_data) != 0)
-		return;
+	RB_FOREACH(cf, client_files, &c->files) {
+		if (EVBUFFER_LENGTH(cf->buffer) != 0)
+			return;
+	}
 
 	if (c->flags & CLIENT_ATTACHED)
 		notify_client("client-detached", c);
@@ -1554,7 +1575,7 @@ server_client_check_exit(struct client *c)
 /* Redraw timer callback. */
 static void
 server_client_redraw_timer(__unused int fd, __unused short events,
-    __unused void* data)
+    __unused void *data)
 {
 	log_debug("redraw timer fired");
 }
@@ -1682,11 +1703,10 @@ server_client_set_title(struct client *c)
 static void
 server_client_dispatch(struct imsg *imsg, void *arg)
 {
-	struct client		*c = arg;
-	struct msg_stdin_data	 stdindata;
-	const char		*data;
-	ssize_t			 datalen;
-	struct session		*s;
+	struct client	*c = arg;
+	const char	*data;
+	ssize_t		 datalen;
+	struct session	*s;
 
 	if (c->flags & CLIENT_DEAD)
 		return;
@@ -1713,27 +1733,13 @@ server_client_dispatch(struct imsg *imsg, void *arg)
 	case MSG_COMMAND:
 		server_client_dispatch_command(c, imsg);
 		break;
-	case MSG_STDIN:
-		if (datalen != sizeof stdindata)
-			fatalx("bad MSG_STDIN size");
-		memcpy(&stdindata, data, sizeof stdindata);
-
-		if (c->stdin_callback == NULL)
-			break;
-		if (stdindata.size <= 0)
-			c->stdin_closed = 1;
-		else {
-			evbuffer_add(c->stdin_data, stdindata.data,
-			    stdindata.size);
-		}
-		c->stdin_callback(c, c->stdin_closed, c->stdin_callback_data);
-		break;
 	case MSG_RESIZE:
 		if (datalen != 0)
 			fatalx("bad MSG_RESIZE size");
 
 		if (c->flags & CLIENT_CONTROL)
 			break;
+		server_client_update_latest(c);
 		server_client_clear_overlay(c);
 		tty_resize(&c->tty);
 		recalculate_sizes();
@@ -1778,6 +1784,15 @@ server_client_dispatch(struct imsg *imsg, void *arg)
 
 		server_client_dispatch_shell(c);
 		break;
+	case MSG_WRITE_READY:
+		server_client_dispatch_write_ready(c, imsg);
+		break;
+	case MSG_READ:
+		server_client_dispatch_read_data(c, imsg);
+		break;
+	case MSG_READ_DONE:
+		server_client_dispatch_read_done(c, imsg);
+		break;
 	}
 }
 
@@ -1796,7 +1811,7 @@ server_client_command_done(struct cmdq_item *item, __unused void *data)
 static void
 server_client_dispatch_command(struct client *c, struct imsg *imsg)
 {
-	struct msg_command_data	  data;
+	struct msg_command	  data;
 	char			 *buf;
 	size_t			  len;
 	int			  argc;
@@ -1940,19 +1955,11 @@ server_client_dispatch_identify(struct client *c, struct imsg *imsg)
 #endif
 
 	if (c->flags & CLIENT_CONTROL) {
-		c->stdin_callback = control_callback;
-
-		evbuffer_free(c->stderr_data);
-		c->stderr_data = c->stdout_data;
-
-		if (c->flags & CLIENT_CONTROLCONTROL)
-			evbuffer_add_printf(c->stdout_data, "\033P1000p");
-		proc_send(c->peer, MSG_STDIN, -1, NULL, 0);
-
-		c->tty.fd = -1;
-
 		close(c->fd);
 		c->fd = -1;
+
+		control_start(c);
+		c->tty.fd = -1;
 	} else if (c->fd != -1) {
 		if (tty_init(&c->tty, c, c->fd, c->term) != 0) {
 			close(c->fd);
@@ -1992,93 +1999,71 @@ server_client_dispatch_shell(struct client *c)
 	proc_kill_peer(c->peer);
 }
 
-/* Event callback to push more stdout data if any left. */
+/* Handle write ready message. */
 static void
-server_client_stdout_cb(__unused int fd, __unused short events, void *arg)
+server_client_dispatch_write_ready(struct client *c, struct imsg *imsg)
 {
-	struct client	*c = arg;
+	struct msg_write_ready	*msg = imsg->data;
+	size_t			 msglen = imsg->hdr.len - IMSG_HEADER_SIZE;
+	struct client_file	 find, *cf;
 
-	if (~c->flags & CLIENT_DEAD)
-		server_client_push_stdout(c);
-	server_client_unref(c);
-}
-
-/* Push stdout to client if possible. */
-void
-server_client_push_stdout(struct client *c)
-{
-	struct msg_stdout_data data;
-	size_t		       sent, left;
-
-	left = EVBUFFER_LENGTH(c->stdout_data);
-	while (left != 0) {
-		sent = left;
-		if (sent > sizeof data.data)
-			sent = sizeof data.data;
-		memcpy(data.data, EVBUFFER_DATA(c->stdout_data), sent);
-		data.size = sent;
-
-		if (proc_send(c->peer, MSG_STDOUT, -1, &data, sizeof data) != 0)
-			break;
-		evbuffer_drain(c->stdout_data, sent);
-
-		left = EVBUFFER_LENGTH(c->stdout_data);
-		log_debug("%s: client %p, sent %zu, left %zu", __func__, c,
-		    sent, left);
-	}
-	if (left != 0) {
-		c->references++;
-		event_once(-1, EV_TIMEOUT, server_client_stdout_cb, c, NULL);
-		log_debug("%s: client %p, queued", __func__, c);
-	}
-}
-
-/* Event callback to push more stderr data if any left. */
-static void
-server_client_stderr_cb(__unused int fd, __unused short events, void *arg)
-{
-	struct client	*c = arg;
-
-	if (~c->flags & CLIENT_DEAD)
-		server_client_push_stderr(c);
-	server_client_unref(c);
-}
-
-/* Push stderr to client if possible. */
-void
-server_client_push_stderr(struct client *c)
-{
-	struct msg_stderr_data data;
-	size_t		       sent, left;
-
-	if (c->stderr_data == c->stdout_data) {
-		server_client_push_stdout(c);
+	if (msglen != sizeof *msg)
+		fatalx("bad MSG_WRITE_READY size");
+	find.stream = msg->stream;
+	if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL)
 		return;
-	}
+	if (msg->error != 0) {
+		cf->error = msg->error;
+		file_fire_done(cf);
+	} else
+		file_push(cf);
+}
 
-	left = EVBUFFER_LENGTH(c->stderr_data);
-	while (left != 0) {
-		sent = left;
-		if (sent > sizeof data.data)
-			sent = sizeof data.data;
-		memcpy(data.data, EVBUFFER_DATA(c->stderr_data), sent);
-		data.size = sent;
+/* Handle read data message. */
+static void
+server_client_dispatch_read_data(struct client *c, struct imsg *imsg)
+{
+	struct msg_read_data	*msg = imsg->data;
+	size_t			 msglen = imsg->hdr.len - IMSG_HEADER_SIZE;
+	struct client_file	 find, *cf;
+	void			*bdata = msg + 1;
+	size_t			 bsize = msglen - sizeof *msg;
 
-		if (proc_send(c->peer, MSG_STDERR, -1, &data, sizeof data) != 0)
-			break;
-		evbuffer_drain(c->stderr_data, sent);
+	if (msglen < sizeof *msg)
+		fatalx("bad MSG_READ_DATA size");
+	find.stream = msg->stream;
+	if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL)
+		return;
 
-		left = EVBUFFER_LENGTH(c->stderr_data);
-		log_debug("%s: client %p, sent %zu, left %zu", __func__, c,
-		    sent, left);
-	}
-	if (left != 0) {
-		c->references++;
-		event_once(-1, EV_TIMEOUT, server_client_stderr_cb, c, NULL);
-		log_debug("%s: client %p, queued", __func__, c);
+	log_debug("%s: file %d read %zu bytes", c->name, cf->stream, bsize);
+	if (cf->error == 0) {
+		if (evbuffer_add(cf->buffer, bdata, bsize) != 0) {
+			cf->error = ENOMEM;
+			file_fire_done(cf);
+		} else
+			file_fire_read(cf);
 	}
 }
 
+/* Handle read done message. */
+static void
+server_client_dispatch_read_done(struct client *c, struct imsg *imsg)
+{
+	struct msg_read_done	*msg = imsg->data;
+	size_t			 msglen = imsg->hdr.len - IMSG_HEADER_SIZE;
+	struct client_file	 find, *cf;
+
+	if (msglen != sizeof *msg)
+		fatalx("bad MSG_READ_DONE size");
+	find.stream = msg->stream;
+	if ((cf = RB_FIND(client_files, &c->files, &find)) == NULL)
+		return;
+
+	log_debug("%s: file %d read done", c->name, cf->stream);
+	cf->error = msg->error;
+	file_fire_done(cf);
+}
+
 /* Add to client message log. */
 void
 server_client_add_message(struct client *c, const char *fmt, ...)
@@ -2128,19 +2113,3 @@ server_client_get_cwd(struct client *c, struct session *s)
 		return (home);
 	return ("/");
 }
-
-/* Resolve an absolute path or relative to client working directory. */
-char *
-server_client_get_path(struct client *c, const char *file)
-{
-	char	*path, resolved[PATH_MAX];
-
-	if (*file == '/')
-		path = xstrdup(file);
-	else
-		xasprintf(&path, "%s/%s", server_client_get_cwd(c, NULL), file);
-	if (realpath(path, resolved) == NULL)
-		return (path);
-	free(path);
-	return (xstrdup(resolved));
-}

server-fn.c

@@ -440,36 +440,6 @@ server_check_unattached(void)
 	}
 }
 
-int
-server_set_stdin_callback(struct client *c, void (*cb)(struct client *, int,
-    void *), void *cb_data, char **cause)
-{
-	if (c == NULL || c->session != NULL) {
-		*cause = xstrdup("no client with stdin");
-		return (-1);
-	}
-	if (c->flags & CLIENT_TERMINAL) {
-		*cause = xstrdup("stdin is a tty");
-		return (-1);
-	}
-	if (c->stdin_callback != NULL) {
-		*cause = xstrdup("stdin is in use");
-		return (-1);
-	}
-
-	c->stdin_callback_data = cb_data;
-	c->stdin_callback = cb;
-
-	c->references++;
-
-	if (c->stdin_closed)
-		c->stdin_callback(c, 1, c->stdin_callback_data);
-
-	proc_send(c->peer, MSG_STDIN, -1, NULL, 0);
-
-	return (0);
-}
-
 void
 server_unzoom_window(struct window *w)
 {

session.c

@@ -568,7 +568,20 @@ session_group_count(struct session_group *sg)
 
 	n = 0;
 	TAILQ_FOREACH(s, &sg->sessions, gentry)
-	    n++;
+		n++;
+	return (n);
+}
+
+/* Count number of clients attached to sessions in session group. */
+u_int
+session_group_attached_count(struct session_group *sg)
+{
+	struct session	*s;
+	u_int		 n;
+
+	n = 0;
+	TAILQ_FOREACH(s, &sg->sessions, gentry)
+		n += s->attached;
 	return (n);
 }
 

spawn.c

@@ -78,12 +78,14 @@ spawn_log(const char *from, struct spawn_context *sc)
 struct winlink *
 spawn_window(struct spawn_context *sc, char **cause)
 {
+	struct cmdq_item	*item = sc->item;
+	struct client		*c = item->client;
 	struct session		*s = sc->s;
 	struct window		*w;
 	struct window_pane	*wp;
 	struct winlink		*wl;
 	int			 idx = sc->idx;
-	u_int			 sx, sy;
+	u_int			 sx, sy, xpixel, ypixel;
 
 	spawn_log(__func__, sc);
 
@@ -153,8 +155,9 @@ spawn_window(struct spawn_context *sc, char **cause)
 			xasprintf(cause, "couldn't add window %d", idx);
 			return (NULL);
 		}
-		default_window_size(s, NULL, &sx, &sy, -1);
-		if ((w = window_create(sx, sy)) == NULL) {
+		default_window_size(sc->c, s, NULL, &sx, &sy, &xpixel, &ypixel,
+		    -1);
+		if ((w = window_create(sx, sy, xpixel, ypixel)) == NULL) {
 			winlink_remove(&s->windows, sc->wl);
 			xasprintf(cause, "couldn't create window %d", idx);
 			return (NULL);
@@ -162,6 +165,7 @@ spawn_window(struct spawn_context *sc, char **cause)
 		if (s->curw == NULL)
 			s->curw = sc->wl;
 		sc->wl->session = s;
+		w->latest = sc->c;
 		winlink_set_window(sc->wl, w);
 	} else
 		w = NULL;
@@ -178,7 +182,8 @@ spawn_window(struct spawn_context *sc, char **cause)
 	/* Set the name of the new window. */
 	if (~sc->flags & SPAWN_RESPAWN) {
 		if (sc->name != NULL) {
-			w->name = xstrdup(sc->name);
+			w->name = format_single(item, sc->name, c, s, NULL,
+			    NULL);
 			options_set_number(w->options, "automatic-rename", 0);
 		} else
 			w->name = xstrdup(default_window_name(w));
@@ -214,9 +219,21 @@ spawn_pane(struct spawn_context *sc, char **cause)
 	u_int			  hlimit;
 	struct winsize		  ws;
 	sigset_t		  set, oldset;
+	key_code		  key;
 
 	spawn_log(__func__, sc);
 
+	/*
+	 * Work out the current working directory. If respawning, use
+	 * the pane's stored one unless specified.
+	 */
+	if (sc->cwd != NULL)
+		cwd = format_single(item, sc->cwd, c, s, NULL, NULL);
+	else if (~sc->flags & SPAWN_RESPAWN)
+		cwd = xstrdup(server_client_get_cwd(c, s));
+	else
+		cwd = NULL;
+
 	/*
 	 * If we are respawning then get rid of the old process. Otherwise
 	 * either create a new cell or assign to the one we are given.
@@ -227,6 +244,7 @@ spawn_pane(struct spawn_context *sc, char **cause)
 			window_pane_index(sc->wp0, &idx);
 			xasprintf(cause, "pane %s:%d.%u still active",
 			    s->name, sc->wl->idx, idx);
+			free(cwd);
 			return (NULL);
 		}
 		if (sc->wp0->fd != -1) {
@@ -247,8 +265,8 @@ spawn_pane(struct spawn_context *sc, char **cause)
 	}
 
 	/*
-	 * Now we have a pane with nothing running in it ready for the new
-	 * process. Work out the command and arguments.
+	 * Now we have a pane with nothing running in it ready for the new process.
+	 * Work out the command and arguments and store the working directory.
 	 */
 	if (sc->argc == 0 && (~sc->flags & SPAWN_RESPAWN)) {
 		cmd = options_get_string(s->options, "default-command");
@@ -263,6 +281,10 @@ spawn_pane(struct spawn_context *sc, char **cause)
 		argc = sc->argc;
 		argv = sc->argv;
 	}
+	if (cwd != NULL) {
+		free(new_wp->cwd);
+		new_wp->cwd = cwd;
+	}
 
 	/*
 	 * Replace the stored arguments if there are new ones. If not, the
@@ -274,21 +296,6 @@ spawn_pane(struct spawn_context *sc, char **cause)
 		new_wp->argv = cmd_copy_argv(argc, argv);
 	}
 
-	/*
-	 * Work out the current working directory. If respawning, use
-	 * the pane's stored one unless specified.
-	 */
-	if (sc->cwd != NULL)
-		cwd = format_single(item, sc->cwd, c, s, NULL, NULL);
-	else if (~sc->flags & SPAWN_RESPAWN)
-		cwd = xstrdup(server_client_get_cwd(c, s));
-	else
-		cwd = NULL;
-	if (cwd != NULL) {
-		free(new_wp->cwd);
-		new_wp->cwd = cwd;
-	}
-
 	/* Create an environment for this pane. */
 	child = environ_for_session(s, 0);
 	if (sc->environ != NULL)
@@ -334,6 +341,8 @@ spawn_pane(struct spawn_context *sc, char **cause)
 	memset(&ws, 0, sizeof ws);
 	ws.ws_col = screen_size_x(&new_wp->base);
 	ws.ws_row = screen_size_y(&new_wp->base);
+	ws.ws_xpixel = w->xpixel * ws.ws_col;
+	ws.ws_ypixel = w->ypixel * ws.ws_row;
 
 	/* Block signals until fork has completed. */
 	sigfillset(&set);
@@ -375,13 +384,17 @@ spawn_pane(struct spawn_context *sc, char **cause)
 
 	/*
 	 * Update terminal escape characters from the session if available and
-	 * force VERASE to tmux's \177.
+	 * force VERASE to tmux's backspace.
 	 */
 	if (tcgetattr(STDIN_FILENO, &now) != 0)
 		_exit(1);
 	if (s->tio != NULL)
 		memcpy(now.c_cc, s->tio->c_cc, sizeof now.c_cc);
-	now.c_cc[VERASE] = '\177';
+	key = options_get_number(global_options, "backspace");
+	if (key >= 0x7f)
+		now.c_cc[VERASE] = '\177';
+	else
+		now.c_cc[VERASE] = key;
 	if (tcsetattr(STDIN_FILENO, TCSANOW, &now) != 0)
 		_exit(1);
 
@@ -424,6 +437,15 @@ spawn_pane(struct spawn_context *sc, char **cause)
 	_exit(1);
 
 complete:
+#ifdef HAVE_UTEMPTER
+	if (~new_wp->flags & PANE_EMPTY) {
+		xasprintf(&cp, "tmux(%lu).%%%u", (long)getpid(), new_wp->id);
+		utempter_add_record(new_wp->fd, cp);
+		kill(getpid(), SIGCHLD);
+		free(cp);
+	}
+#endif
+
 	new_wp->pipe_off = 0;
 	new_wp->flags &= ~PANE_EXITED;
 

status.c

@@ -915,11 +915,17 @@ status_prompt_key(struct client *c, key_code key)
 {
 	struct options		*oo = c->session->options;
 	char			*s, *cp, word[64], prefix = '=';
-	const char		*histstr, *ws = NULL;
+	const char		*histstr, *ws = NULL, *keystring;
 	size_t			 size, n, off, idx, used;
 	struct utf8_data	 tmp, *first, *last, *ud;
 	int			 keys;
 
+	if (c->prompt_flags & PROMPT_KEY) {
+		keystring = key_string_lookup_key(key);
+		c->prompt_inputcb(c, c->prompt_data, keystring, 1);
+		status_prompt_clear(c);
+		return (0);
+	}
 	size = utf8_strlen(c->prompt_buffer);
 
 	if (c->prompt_flags & PROMPT_NUMERIC) {

style.c

@@ -36,13 +36,15 @@ static struct style style_default = {
 	STYLE_ALIGN_DEFAULT,
 	STYLE_LIST_OFF,
 
-	STYLE_RANGE_NONE, 0
+	STYLE_RANGE_NONE, 0,
+
+	STYLE_DEFAULT_BASE
 };
 
 /*
- * Parse an embedded style of the form "fg=colour,bg=colour,bright,...".
- * Note that this adds onto the given style, so it must have been initialized
- * alredy.
+ * Parse an embedded style of the form "fg=colour,bg=colour,bright,...".  Note
+ * that this adds onto the given style, so it must have been initialized
+ * already.
  */
 int
 style_parse(struct style *sy, const struct grid_cell *base, const char *in)
@@ -74,7 +76,11 @@ style_parse(struct style *sy, const struct grid_cell *base, const char *in)
 			sy->gc.bg = base->bg;
 			sy->gc.attr = base->attr;
 			sy->gc.flags = base->flags;
-		} else if (strcasecmp(tmp, "nolist") == 0)
+		} else if (strcasecmp(tmp, "push-default") == 0)
+			sy->default_type = STYLE_DEFAULT_PUSH;
+		else if (strcasecmp(tmp, "pop-default") == 0)
+			sy->default_type = STYLE_DEFAULT_POP;
+		else if (strcasecmp(tmp, "nolist") == 0)
 			sy->list = STYLE_LIST_OFF;
 		else if (strncasecmp(tmp, "list=", 5) == 0) {
 			if (strcasecmp(tmp + 5, "on") == 0)
@@ -218,6 +224,14 @@ style_tostring(struct style *sy)
 		    tmp);
 		comma = ",";
 	}
+	if (sy->default_type != STYLE_DEFAULT_BASE) {
+		if (sy->default_type == STYLE_DEFAULT_PUSH)
+			tmp = "push-default";
+		else if (sy->default_type == STYLE_DEFAULT_POP)
+			tmp = "pop-default";
+		off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp);
+		comma = ",";
+	}
 	if (sy->fill != 8) {
 		off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
 		    colour_tostring(sy->fill));
@@ -257,21 +271,6 @@ style_apply(struct grid_cell *gc, struct options *oo, const char *name)
 	gc->attr |= sy->gc.attr;
 }
 
-/* Apply a style, updating if default. */
-void
-style_apply_update(struct grid_cell *gc, struct options *oo, const char *name)
-{
-	struct style	*sy;
-
-	sy = options_get_style(oo, name);
-	if (sy->gc.fg != 8)
-		gc->fg = sy->gc.fg;
-	if (sy->gc.bg != 8)
-		gc->bg = sy->gc.bg;
-	if (sy->gc.attr != 0)
-		gc->attr |= sy->gc.attr;
-}
-
 /* Initialize style from cell. */
 void
 style_set(struct style *sy, const struct grid_cell *gc)

tmux.1

@@ -214,7 +214,6 @@ was given) and off.
 Report the
 .Nm
 version.
-.Pp
 .It Ar command Op Ar flags
 This specifies one of a set of commands used to control
 .Nm ,
@@ -296,6 +295,12 @@ Prompt to search for text in open windows.
 Display some information about the current window.
 .It l
 Move to the previously selected window.
+.It m
+Mark the current pane (see
+.Ic select-pane
+.Fl m ) .
+.It M
+Clear the marked pane.
 .It n
 Change to the next window.
 .It o
@@ -306,12 +311,6 @@ Change to the previous window.
 Briefly display pane indexes.
 .It r
 Force redraw of the attached client.
-.It m
-Mark the current pane (see
-.Ic select-pane
-.Fl m ) .
-.It M
-Clear the marked pane.
 .It s
 Select a new session for the attached client interactively.
 .It t
@@ -556,7 +555,7 @@ Braces may be enclosed inside braces, for example:
 .Bd -literal -offset indent
 bind x if-shell "true" {
     if-shell "true" {
-         display "true!"
+        display "true!"
     }
 }
 .Ed
@@ -938,7 +937,9 @@ If
 is specified, any other clients attached to the session are detached.
 If
 .Fl x
-is given, send SIGHUP to the parent process of the client as well as
+is given, send
+.Dv SIGHUP
+to the parent process of the client as well as
 detaching the client, typically causing it to exit.
 .Fl r
 signifies the client is read-only (only keys bound to the
@@ -989,7 +990,9 @@ option kills all but the client given with
 .Fl t .
 If
 .Fl P
-is given, send SIGHUP to the parent process of the client, typically causing it
+is given, send
+.Dv SIGHUP
+to the parent process of the client, typically causing it
 to exit.
 With
 .Fl E ,
@@ -1156,7 +1159,7 @@ The
 .Fl P
 option prints information about the new session after it has been created.
 By default, it uses the format
-.Ql #{session_name}:
+.Ql #{session_name}:\&
 but a different format may be specified with
 .Fl F .
 .Pp
@@ -1288,6 +1291,17 @@ shows the parsed commands and line numbers if possible.
 Start the
 .Nm
 server, if not already running, without creating any sessions.
+.Pp
+Note that as by default the
+.Nm
+server will exit with no sessions, this is only useful if a session is created in
+.Pa ~/.tmux.conf ,
+.Ic exit-empty
+is turned off, or another command is run as part of the same command sequence.
+For example:
+.Bd -literal -offset indent
+$ tmux start \\; show -g
+.Ed
 .It Xo Ic suspend-client
 .Op Fl t Ar target-client
 .Xc
@@ -1296,7 +1310,7 @@ Suspend a client by sending
 .Dv SIGTSTP
 (tty stop).
 .It Xo Ic switch-client
-.Op Fl Elnpr
+.Op Fl ElnprZ
 .Op Fl c Ar target-client
 .Op Fl t Ar target-session
 .Op Fl T Ar key-table
@@ -1313,7 +1327,10 @@ may refer to a pane (a target that contains
 .Ql \&.
 or
 .Ql % ) ,
-in which case the session, window and pane are all changed.
+to change session, window and pane.
+In that case,
+.Fl Z
+keeps the window zoomed if it was zoomed.
 If
 .Fl l ,
 .Fl n
@@ -1333,7 +1350,8 @@ is used,
 option will not be applied.
 .Pp
 .Fl T
-sets the client's key table; the next key from the client will be interpreted from
+sets the client's key table; the next key from the client will be interpreted
+from
 .Ar key-table .
 This may be used to configure multiple prefix keys, or to bind commands to
 sequences of keys.
@@ -1349,11 +1367,41 @@ bind-key -Troot   a switch-client -Ttable1
 .Ed
 .El
 .Sh WINDOWS AND PANES
-A
+Each window displayed by
 .Nm
-window may be in one of two modes.
-The default permits direct access to the terminal attached to the window.
-The other is copy mode, which permits a section of a window or its
+may be split into one or more
+.Em panes ;
+each pane takes up a certain area of the display and is a separate terminal.
+A window may be split into panes using the
+.Ic split-window
+command.
+Windows may be split horizontally (with the
+.Fl h
+flag) or vertically.
+Panes may be resized with the
+.Ic resize-pane
+command (bound to
+.Ql C-Up ,
+.Ql C-Down
+.Ql C-Left
+and
+.Ql C-Right
+by default), the current pane may be changed with the
+.Ic select-pane
+command and the
+.Ic rotate-window
+and
+.Ic swap-pane
+commands may be used to swap panes without changing their position.
+Panes are numbered beginning from zero in the order they are created.
+.Pp
+By default, a
+.Nm
+pane permits direct access to the terminal contained in the pane.
+A pane may also be put into one of several modes:
+.Bl -dash -offset indent
+.It
+Copy mode, which permits a section of a window or its
 history to be copied to a
 .Em paste buffer
 for later insertion into another window.
@@ -1362,9 +1410,21 @@ This mode is entered with the
 command, bound to
 .Ql \&[
 by default.
-It is also entered when a command that produces output, such as
+.It
+View mode, which is like copy mode but is entered when a command that produces
+output, such as
 .Ic list-keys ,
 is executed from a key binding.
+.It
+Choose mode, which allows an item to be chosen from a list.
+This may be a client, a session or window or pane, or a buffer.
+This mode is entered with the
+.Ic choose-buffer ,
+.Ic choose-client
+and
+.Ic choose-tree
+commands.
+.El
 .Pp
 In copy mode an indicator is displayed in the top-right corner of the pane with
 the current position and the number of lines in the history.
@@ -1405,6 +1465,7 @@ The following commands are supported in copy mode:
 .It Li "copy-selection-no-clear [<prefix>]" Ta "" Ta ""
 .It Li "copy-selection-and-cancel [<prefix>]" Ta "Enter" Ta "M-w"
 .It Li "cursor-down" Ta "j" Ta "Down"
+.It Li "cursor-down-and-cancel" Ta "" Ta ""
 .It Li "cursor-left" Ta "h" Ta "Left"
 .It Li "cursor-right" Ta "l" Ta "Right"
 .It Li "cursor-up" Ta "k" Ta "Up"
@@ -1526,37 +1587,7 @@ bind PageUp copy-mode -eu
 .Ed
 .El
 .Pp
-Each window displayed by
-.Nm
-may be split into one or more
-.Em panes ;
-each pane takes up a certain area of the display and is a separate terminal.
-A window may be split into panes using the
-.Ic split-window
-command.
-Windows may be split horizontally (with the
-.Fl h
-flag) or vertically.
-Panes may be resized with the
-.Ic resize-pane
-command (bound to
-.Ql C-Up ,
-.Ql C-Down
-.Ql C-Left
-and
-.Ql C-Right
-by default), the current pane may be changed with the
-.Ic select-pane
-command and the
-.Ic rotate-window
-and
-.Ic swap-pane
-commands may be used to swap panes without changing their position.
-Panes are numbered beginning from zero in the order they are created.
-.Pp
-A number of preset
-.Em layouts
-are available.
+A number of preset arrangements of panes are available, these are called layouts.
 These may be selected with the
 .Ic select-layout
 command or cycled with
@@ -1635,7 +1666,7 @@ By default, it uses the format
 but a different format may be specified with
 .Fl F .
 .It Xo Ic capture-pane
-.Op Fl aepPqCJ
+.Op Fl aepPqCJN
 .Op Fl b Ar buffer-name
 .Op Fl E Ar end-line
 .Op Fl S Ar start-line
@@ -1660,8 +1691,10 @@ is given, the output includes escape sequences for text and background
 attributes.
 .Fl C
 also escapes non-printable characters as octal \exxx.
+.Fl N
+preserves trailing spaces at each line's end and
 .Fl J
-joins wrapped lines and preserves trailing spaces at each line's end.
+preserves trailing spaces and joins any wrapped lines.
 .Fl P
 captures only any output that the pane has received that is the beginning of an
 as-yet incomplete escape sequence.
@@ -1680,7 +1713,7 @@ the end of the visible pane.
 The default is to capture only the visible contents of the pane.
 .It Xo
 .Ic choose-client
-.Op Fl NZ
+.Op Fl NrZ
 .Op Fl F Ar format
 .Op Fl f Ar filter
 .Op Fl O Ar sort-order
@@ -1709,7 +1742,8 @@ The following keys may be used in client mode:
 .It Li "z" Ta "Suspend selected client"
 .It Li "Z" Ta "Suspend tagged clients"
 .It Li "f" Ta "Enter a format to filter items"
-.It Li "O" Ta "Change sort order"
+.It Li "O" Ta "Change sort field"
+.It Li "r" Ta "Reverse sort order"
 .It Li "v" Ta "Toggle preview"
 .It Li "q" Ta "Exit mode"
 .El
@@ -1724,12 +1758,14 @@ If
 is not given, "detach-client -t '%%'" is used.
 .Pp
 .Fl O
-specifies the initial sort order: one of
+specifies the initial sort field: one of
 .Ql name ,
 .Ql size ,
 .Ql creation ,
 or
 .Ql activity .
+.Fl r
+reverses the sort order.
 .Fl f
 specifies an initial filter: the filter is a format - if it evaluates to zero,
 the item in the list is not shown, otherwise it is shown.
@@ -1741,7 +1777,7 @@ starts without the preview.
 This command works only if at least one client is attached.
 .It Xo
 .Ic choose-tree
-.Op Fl GNswZ
+.Op Fl GNrswZ
 .Op Fl F Ar format
 .Op Fl f Ar filter
 .Op Fl O Ar sort-order
@@ -1773,7 +1809,8 @@ The following keys may be used in tree mode:
 .It Li "C-t" Ta "Tag all items"
 .It Li "\&:" Ta "Run a command for each tagged item"
 .It Li "f" Ta "Enter a format to filter items"
-.It Li "O" Ta "Change sort order"
+.It Li "O" Ta "Change sort field"
+.It Li "r" Ta "Reverse sort order"
 .It Li "v" Ta "Toggle preview"
 .It Li "q" Ta "Exit mode"
 .El
@@ -1788,11 +1825,13 @@ If
 is not given, "switch-client -t '%%'" is used.
 .Pp
 .Fl O
-specifies the initial sort order: one of
+specifies the initial sort field: one of
 .Ql index ,
 .Ql name ,
 or
 .Ql time .
+.Fl r
+reverses the sort order.
 .Fl f
 specifies an initial filter: the filter is a format - if it evaluates to zero,
 the item in the list is not shown, otherwise it is shown.
@@ -1871,10 +1910,8 @@ zooms the pane.
 .Pp
 This command works only if at least one client is attached.
 .It Xo Ic join-pane
-.Op Fl bdhv
-.Oo Fl l
-.Ar size |
-.Fl p Ar percentage Oc
+.Op Fl bdfhv
+.Op Fl l Ar size
 .Op Fl s Ar src-pane
 .Op Fl t Ar dst-pane
 .Xc
@@ -1925,11 +1962,13 @@ The
 option kills all but the window given with
 .Fl t .
 .It Xo Ic last-pane
-.Op Fl de
+.Op Fl deZ
 .Op Fl t Ar target-window
 .Xc
 .D1 (alias: Ic lastp )
 Select the last (previously selected) pane.
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .Fl e
 enables or
 .Fl d
@@ -2009,9 +2048,7 @@ flag, see the
 section.
 .It Xo Ic move-pane
 .Op Fl bdhv
-.Oo Fl l
-.Ar size |
-.Fl p Ar percentage Oc
+.Op Fl l Ar size
 .Op Fl s Ar src-pane
 .Op Fl t Ar dst-pane
 .Xc
@@ -2220,8 +2257,14 @@ or
 .Fl y .
 The
 .Ar adjustment
-is given in lines or cells (the default is 1).
-.Pp
+is given in lines or columns (the default is 1);
+.Fl x
+and
+.Fl y
+may be a given as a number of lines or columns or followed by
+.Ql %
+for a percentage of the window size (for example
+.Ql -x 10% ) .
 With
 .Fl Z ,
 the active pane is toggled between zoomed (occupying the whole of the window)
@@ -2311,7 +2354,7 @@ option has the same meaning as for the
 .Ic new-window
 command.
 .It Xo Ic rotate-window
-.Op Fl DU
+.Op Fl DUZ
 .Op Fl t Ar target-window
 .Xc
 .D1 (alias: Ic rotatew )
@@ -2319,6 +2362,8 @@ Rotate the positions of the panes within a window, either upward (numerically
 lower) with
 .Fl U
 or downward (numerically higher).
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .It Xo Ic select-layout
 .Op Fl Enop
 .Op Fl t Ar target-pane
@@ -2342,7 +2387,7 @@ applies the last set layout if possible (undoes the most recent layout change).
 .Fl E
 spreads the current pane and any panes next to it out evenly.
 .It Xo Ic select-pane
-.Op Fl DdeLlMmRU
+.Op Fl DdeLlMmRUZ
 .Op Fl T Ar title
 .Op Fl t Ar target-pane
 .Xc
@@ -2359,6 +2404,8 @@ or
 .Fl U
 is used, respectively the pane below, to the left, to the right, or above the
 target pane is used.
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .Fl l
 is the same as using the
 .Ic last-pane
@@ -2409,9 +2456,7 @@ the command behaves like
 .Op Fl bdfhIvP
 .Op Fl c Ar start-directory
 .Op Fl e Ar environment
-.Oo Fl l
-.Ar size |
-.Fl p Ar percentage Oc
+.Op Fl l Ar size
 .Op Fl t Ar target-pane
 .Op Ar shell-command
 .Op Fl F Ar format
@@ -2427,10 +2472,12 @@ a vertical split; if neither is specified,
 is assumed.
 The
 .Fl l
-and
-.Fl p
-options specify the size of the new pane in lines (for vertical split) or in
-cells (for horizontal split), or as a percentage, respectively.
+option specifies the size of the new pane in lines (for vertical split) or in
+columns (for horizontal split);
+.Ar size
+may be followed by
+.Ql %
+to specify a percentage of the available space.
 The
 .Fl b
 option causes the new pane to be created to the left of or above
@@ -2464,7 +2511,7 @@ All other options have the same meaning as for the
 .Ic new-window
 command.
 .It Xo Ic swap-pane
-.Op Fl dDU
+.Op Fl dDUZ
 .Op Fl s Ar src-pane
 .Op Fl t Ar dst-pane
 .Xc
@@ -2481,7 +2528,9 @@ swaps with the next pane (after it numerically).
 .Fl d
 instructs
 .Nm
-not to change the active pane.
+not to change the active pane and
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .Pp
 If
 .Fl s
@@ -2500,10 +2549,11 @@ This is similar to
 except the source and destination windows are swapped.
 It is an error if no window exists at
 .Ar src-window .
+If
+.Fl d
+is given, the new window does not become the current window.
 .Pp
-Like
-.Ic swap-pane ,
-if
+If
 .Fl s
 is omitted and a marked pane is present (see
 .Ic select-pane
@@ -2571,10 +2621,15 @@ bind-key '"' split-window
 bind-key "'" new-window
 .Ed
 .Pp
+A command bound to the
+.Em Any
+key will execute for all keys which do not have a more specific binding.
+.Pp
 Commands related to key bindings are as follows:
 .Bl -tag -width Ds
 .It Xo Ic bind-key
 .Op Fl nr
+.Op Fl N Ar note
 .Op Fl T Ar key-table
 .Ar key Ar command Op Ar arguments
 .Xc
@@ -2622,24 +2677,48 @@ The
 flag indicates this key may repeat, see the
 .Ic repeat-time
 option.
+.Fl N
+attaches a note to the key (shown with
+.Ic list-keys
+.Fl N ) .
 .Pp
 To view the default bindings and possible commands, see the
 .Ic list-keys
 command.
 .It Xo Ic list-keys
-.Op Fl T Ar key-table
+.Op Fl 1N
+.Op Fl P Ar prefix-string Fl T Ar key-table
+.Op key
 .Xc
 .D1 (alias: Ic lsk )
 List all key bindings.
-Without
-.Fl T
-all key tables are printed.
+By default this shows all keys or any bindings for
+.Ar key
+in the syntax of the
+.Ic bind-key
+command.
+.Fl N
+instead show keys and attached notes, i
+.Ar key-table
+if given or in the
+.Em root
+and
+.Em prefix
+key tables by default.
+.Fl P
+specifies a prefix to print before each key.
 With
+.Fl 1
+only the first matching key and note is shown.
+.Pp
+Without
+.Fl N ,
 .Fl T
-only
-.Ar key-table .
+prints only keys in
+.Ar key-table ,
+otherwise all key tables are printed.
 .It Xo Ic send-keys
-.Op Fl HlMRX
+.Op Fl FHlMRX
 .Op Fl N Ar repeat-count
 .Op Fl t Ar target-pane
 .Ar key Ar ...
@@ -2678,7 +2757,9 @@ the
 .Sx WINDOWS AND PANES
 section.
 .Fl N
-specifies a repeat count.
+specifies a repeat count and
+.Fl F
+expands formats in arguments where appropriate.
 .It Xo Ic send-prefix
 .Op Fl 2
 .Op Fl t Ar target-pane
@@ -2716,7 +2797,7 @@ and
 .Pp
 The
 .Nm
-server has a set of global options which do not apply to any particular
+server has a set of global server options which do not apply to any particular
 window or session or pane.
 These are altered with the
 .Ic set-option
@@ -2890,6 +2971,10 @@ omitted to toggle).
 .Pp
 Available server options are:
 .Bl -tag -width Ds
+.It Ic backspace Ar key
+Set the key sent by
+.Nm
+for backspace.
 .It Ic buffer-limit Ar number
 Set the number of buffers; as new buffers are added to the top of the stack,
 old ones are removed from the bottom if necessary to maintain this maximum
@@ -3632,7 +3717,7 @@ see the
 section.
 .Pp
 .It Xo Ic window-size
-.Ar largest | Ar smallest | Ar manual
+.Ar largest | Ar smallest | Ar manual | Ar latest
 .Xc
 Configure how
 .Nm
@@ -3647,6 +3732,10 @@ If
 the size of a new window is set from the
 .Ic default-size
 option and windows are resized automatically.
+With
+.Ar latest ,
+.Nm
+uses the size of the client that had the most recent activity.
 See also the
 .Ic resize-window
 command and the
@@ -4058,9 +4147,15 @@ appended or prepended to the string if the length has been trimmed, for example
 will append
 .Ql ...
 if the pane title is more than five characters.
+Similarly,
+.Ql p
+pads the string to a given width, for example
+.Ql #{p10:pane_title}
+will result in a width of at least 10 characters.
+A positive width pads on the left, a negative on the right.
 .Pp
 Prefixing a time variable with
-.Ql t:
+.Ql t:\&
 will convert it to a string, so if
 .Ql #{window_activity}
 gives
@@ -4069,34 +4164,34 @@ gives
 gives
 .Ql Sun Oct 25 09:25:02 2015 .
 The
-.Ql b:
+.Ql b:\&
 and
-.Ql d:
+.Ql d:\&
 prefixes are
 .Xr basename 3
 and
 .Xr dirname 3
 of the variable respectively.
-.Ql q:
+.Ql q:\&
 will escape
 .Xr sh 1
 special characters.
-.Ql E:
+.Ql E:\&
 will expand the format twice, for example
 .Ql #{E:status-left}
 is the result of expanding the content of the
 .Ic status-left
 option rather than the option itself.
-.Ql T:
+.Ql T:\&
 is like
-.Ql E:
+.Ql E:\&
 but also expands
 .Xr strftime 3
 specifiers.
-.Ql S: ,
-.Ql W:
+.Ql S:\& ,
+.Ql W:\&
 or
-.Ql P:
+.Ql P:\&
 will loop over each session, window or pane and insert the format once
 for each.
 For windows and panes, two comma-separated formats may be given:
@@ -4107,7 +4202,7 @@ For example, to get a list of windows formatted like the status line:
 .Ed
 .Pp
 A prefix of the form
-.Ql s/foo/bar/:
+.Ql s/foo/bar/:\&
 will substitute
 .Ql foo
 with
@@ -4116,7 +4211,7 @@ throughout.
 The first argument may be an extended regular expression and a final argument may be
 .Ql i
 to ignore case, for example
-.Ql s/a(.)/\e1x/i:
+.Ql s/a(.)/\e1x/i:\&
 would change
 .Ql abABab
 into
@@ -4160,6 +4255,8 @@ The following variables are available, where appropriate:
 .It Li "buffer_sample" Ta "" Ta "Sample of start of buffer"
 .It Li "buffer_size" Ta "" Ta "Size of the specified buffer in bytes"
 .It Li "client_activity" Ta "" Ta "Time client last had activity"
+.It Li "client_cell_height" Ta "" Ta "Height of each client cell in pixels"
+.It Li "client_cell_width" Ta "" Ta "Width of each client cell in pixels"
 .It Li "client_control_mode" Ta "" Ta "1 if client is in control mode"
 .It Li "client_created" Ta "" Ta "Time client created"
 .It Li "client_discarded" Ta "" Ta "Bytes discarded when client behind"
@@ -4172,15 +4269,18 @@ The following variables are available, where appropriate:
 .It Li "client_readonly" Ta "" Ta "1 if client is readonly"
 .It Li "client_session" Ta "" Ta "Name of the client's session"
 .It Li "client_termname" Ta "" Ta "Terminal name of client"
-.It Li "client_termtype" Ta "" Ta "Terminal type of client"
 .It Li "client_tty" Ta "" Ta "Pseudo terminal of client"
-.It Li "client_utf8" Ta "" Ta "1 if client supports utf8"
+.It Li "client_utf8" Ta "" Ta "1 if client supports UTF-8"
 .It Li "client_width" Ta "" Ta "Width of client"
 .It Li "client_written" Ta "" Ta "Bytes written to client"
 .It Li "command" Ta "" Ta "Name of command in use, if any"
 .It Li "command_list_alias" Ta "" Ta "Command alias if listing commands"
 .It Li "command_list_name" Ta "" Ta "Command name if listing commands"
 .It Li "command_list_usage" Ta "" Ta "Command usage if listing commands"
+.It Li "copy_cursor_line" Ta "" Ta "Line the cursor is on in copy mode"
+.It Li "copy_cursor_word" Ta "" Ta "Word under cursor in copy mode"
+.It Li "copy_cursor_x" Ta "" Ta "Cursor X position in copy mode"
+.It Li "copy_cursor_y" Ta "" Ta "Cursor Y position in copy mode"
 .It Li "cursor_character" Ta "" Ta "Character at cursor in pane"
 .It Li "cursor_flag" Ta "" Ta "Pane cursor flag"
 .It Li "cursor_x" Ta "" Ta "Cursor X position in pane"
@@ -4221,7 +4321,7 @@ The following variables are available, where appropriate:
 .It Li "pane_current_path" Ta "" Ta "Current path if available"
 .It Li "pane_dead" Ta "" Ta "1 if pane is dead"
 .It Li "pane_dead_status" Ta "" Ta "Exit status of process in dead pane"
-.It Li "pane_format" Ta "" Ta "1 if format is for a pane (not assuming the current)"
+.It Li "pane_format" Ta "" Ta "1 if format is for a pane"
 .It Li "pane_height" Ta "" Ta "Height of pane"
 .It Li "pane_id" Ta "#D" Ta "Unique pane ID"
 .It Li "pane_in_mode" Ta "" Ta "1 if pane is in a mode"
@@ -4231,6 +4331,7 @@ The following variables are available, where appropriate:
 .It Li "pane_marked" Ta "" Ta "1 if this is the marked pane"
 .It Li "pane_marked_set" Ta "" Ta "1 if a marked pane is set"
 .It Li "pane_mode" Ta "" Ta "Name of pane mode, if any"
+.It Li "pane_path" Ta "#T" Ta "Path of pane (can be set by application)"
 .It Li "pane_pid" Ta "" Ta "PID of first process in pane"
 .It Li "pane_pipe" Ta "" Ta "1 if pane is being piped"
 .It Li "pane_right" Ta "" Ta "Right of pane"
@@ -4238,7 +4339,7 @@ The following variables are available, where appropriate:
 .It Li "pane_start_command" Ta "" Ta "Command pane started with"
 .It Li "pane_synchronized" Ta "" Ta "1 if pane is synchronized"
 .It Li "pane_tabs" Ta "" Ta "Pane tab positions"
-.It Li "pane_title" Ta "#T" Ta "Title of pane"
+.It Li "pane_title" Ta "#T" Ta "Title of pane (can be set by application)"
 .It Li "pane_top" Ta "" Ta "Top of pane"
 .It Li "pane_tty" Ta "" Ta "Pseudo terminal of pane"
 .It Li "pane_width" Ta "" Ta "Width of pane"
@@ -4247,14 +4348,22 @@ The following variables are available, where appropriate:
 .It Li "scroll_position" Ta "" Ta "Scroll position in copy mode"
 .It Li "scroll_region_lower" Ta "" Ta "Bottom of scroll region in pane"
 .It Li "scroll_region_upper" Ta "" Ta "Top of scroll region in pane"
+.It Li "selection_end_x" Ta "" Ta "X position of the end of the selection"
+.It Li "selection_end_y" Ta "" Ta "Y position of the end of the selection"
 .It Li "selection_present" Ta "" Ta "1 if selection started in copy mode"
+.It Li "selection_start_x" Ta "" Ta "X position of the start of the selection"
+.It Li "selection_start_y" Ta "" Ta "Y position of the start of the selection"
 .It Li "session_activity" Ta "" Ta "Time of session last activity"
 .It Li "session_alerts" Ta "" Ta "List of window indexes with alerts"
 .It Li "session_attached" Ta "" Ta "Number of clients session is attached to"
+.It Li "session_attached_list" Ta "" Ta "List of clients session is attached to"
 .It Li "session_created" Ta "" Ta "Time session created"
-.It Li "session_format" Ta "" Ta "1 if format is for a session (not assuming the current)"
+.It Li "session_format" Ta "" Ta "1 if format is for a session"
 .It Li "session_group" Ta "" Ta "Name of session group"
+.It Li "session_group_attached" Ta "" Ta "Number of clients sessions in group are attached to"
+.It Li "session_group_attached_list" Ta "" Ta "List of clients sessions in group are attached to"
 .It Li "session_group_list" Ta "" Ta "List of sessions in group"
+.It Li "session_group_many_attached" Ta "" Ta "1 if multiple clients attached to sessions in group"
 .It Li "session_group_size" Ta "" Ta "Size of session group"
 .It Li "session_grouped" Ta "" Ta "1 if session in a group"
 .It Li "session_id" Ta "" Ta "Unique session ID"
@@ -4267,19 +4376,28 @@ The following variables are available, where appropriate:
 .It Li "start_time" Ta "" Ta "Server start time"
 .It Li "version" Ta "" Ta "Server version"
 .It Li "window_active" Ta "" Ta "1 if window active"
+.It Li "window_active_clients" Ta "" Ta "Number of clients viewing this window"
+.It Li "window_active_clients_list" Ta "" Ta "List of clients viewing this window"
+.It Li "window_active_sessions" Ta "" Ta "Number of sessions on which this window is active"
+.It Li "window_active_sessions_list" Ta "" Ta "List of sessions on which this window is active"
 .It Li "window_activity" Ta "" Ta "Time of window last activity"
 .It Li "window_activity_flag" Ta "" Ta "1 if window has activity"
 .It Li "window_bell_flag" Ta "" Ta "1 if window has bell"
 .It Li "window_bigger" Ta "" Ta "1 if window is larger than client"
+.It Li "window_cell_height" Ta "" Ta "Height of each cell in pixels"
+.It Li "window_cell_width" Ta "" Ta "Width of each cell in pixels"
 .It Li "window_end_flag" Ta "" Ta "1 if window has the highest index"
 .It Li "window_flags" Ta "#F" Ta "Window flags"
-.It Li "window_format" Ta "" Ta "1 if format is for a window (not assuming the current)"
+.It Li "window_format" Ta "" Ta "1 if format is for a window"
 .It Li "window_height" Ta "" Ta "Height of window"
 .It Li "window_id" Ta "" Ta "Unique window ID"
 .It Li "window_index" Ta "#I" Ta "Index of window"
 .It Li "window_last_flag" Ta "" Ta "1 if window is the last used"
 .It Li "window_layout" Ta "" Ta "Window layout description, ignoring zoomed window panes"
 .It Li "window_linked" Ta "" Ta "1 if window is linked across sessions"
+.It Li "window_linked_sessions" Ta "" Ta "Number of sessions this window is linked to"
+.It Li "window_linked_sessions_list" Ta "" Ta "List of sessions this window is linked to"
+.It Li "window_marked_flag" Ta "" Ta "1 if window contains the marked pane"
 .It Li "window_name" Ta "#W" Ta "Name of window"
 .It Li "window_offset_x" Ta "" Ta "X offset into window if larger than client"
 .It Li "window_offset_y" Ta "" Ta "Y offset into window if larger than client"
@@ -4299,7 +4417,7 @@ interface, for example
 .Ic status-style
 for the status line.
 In addition, embedded styles may be specified in format options, such as
-.Ic status-left-format ,
+.Ic status-left ,
 by enclosing them in
 .Ql #[
 and
@@ -4307,7 +4425,9 @@ and
 .Pp
 A style may be the single term
 .Ql default
-to specify the default style (which may inherit from another option) or a space
+to specify the default style (which may come from an option, for example
+.Ic status-style
+in the status line) or a space
 or comma separated list of the following:
 .Bl -tag -width Ds
 .It Ic fg=colour
@@ -4386,6 +4506,20 @@ and
 .Ic list=right-marker
 mark the text to be used to mark that text has been trimmed from the left or
 right of the list if there is not enough space.
+.It Xo Ic push-default ,
+.Ic pop-default
+.Xc
+Store the current colours and attributes as the default or reset to the previous
+default.
+A
+.Ic push-default
+affects any subsequent use of the
+.Ic default
+term until a
+.Ic pop-default .
+Only one default may be pushed (each
+.Ic push-default
+replaces the previous saved default).
 .It Xo Ic range=left ,
 .Ic range=right ,
 .Ic range=window|X ,
@@ -4602,7 +4736,7 @@ session option.
 Commands related to the status line are as follows:
 .Bl -tag -width Ds
 .It Xo Ic command-prompt
-.Op Fl 1Ni
+.Op Fl 1ikN
 .Op Fl I Ar inputs
 .Op Fl p Ar prompts
 .Op Fl t Ar target-client
@@ -4652,6 +4786,10 @@ but any quotation marks are escaped.
 .Fl 1
 makes the prompt only accept one key press, in this case the resulting input
 is a single character.
+.Fl k
+is like
+.Fl 1
+but the key press is translated to a key name.
 .Fl N
 makes the prompt only accept numeric key presses.
 .Fl i
@@ -4815,7 +4953,7 @@ When the
 option is reached, the oldest automatically named buffer is deleted.
 Explicitly named buffers are not subject to
 .Ic buffer-limit
-and may be deleted with
+and may be deleted with the
 .Ic delete-buffer
 command.
 .Pp
@@ -4842,7 +4980,7 @@ The buffer commands are as follows:
 .Bl -tag -width Ds
 .It Xo
 .Ic choose-buffer
-.Op Fl NZ
+.Op Fl NZr
 .Op Fl F Ar format
 .Op Fl f Ar filter
 .Op Fl O Ar sort-order
@@ -4869,7 +5007,8 @@ The following keys may be used in buffer mode:
 .It Li "d" Ta "Delete selected buffer"
 .It Li "D" Ta "Delete tagged buffers"
 .It Li "f" Ta "Enter a format to filter items"
-.It Li "O" Ta "Change sort order"
+.It Li "O" Ta "Change sort field"
+.It Li "r" Ta "Reverse sort order"
 .It Li "v" Ta "Toggle preview"
 .It Li "q" Ta "Exit mode"
 .El
@@ -4884,11 +5023,13 @@ If
 is not given, "paste-buffer -b '%%'" is used.
 .Pp
 .Fl O
-specifies the initial sort order: one of
+specifies the initial sort field: one of
 .Ql time ,
 .Ql name
 or
 .Ql size .
+.Fl r
+reverses the sort order.
 .Fl f
 specifies an initial filter: the filter is a format - if it evaluates to zero,
 the item in the list is not shown, otherwise it is shown.
@@ -5058,6 +5199,37 @@ channel are made to wait until the channel is unlocked with
 .Ic wait-for
 .Fl U .
 .El
+.Sh EXIT MESSAGES
+When a
+.Nm
+client detaches, it prints a message.
+This may be one of:
+.Bl -tag -width Ds
+.It [detached (from session ...)]
+The client was detached normally.
+.It [detached and SIGHUP]
+The client was detached and its parent sent the
+.Dv SIGHUP
+signal (for example with
+.Ic detach-client
+.Fl P ) .
+.It [lost tty]
+The client's
+.Xr tty 4
+or
+.Xr pty 4
+was unexpectedly destroyed.
+.It [terminated]
+The client was killed with
+.Dv SIGTERM .
+.It [exited]
+The server exited when it had no sessions.
+.It [server exited]
+The server exited when it received
+.Dv SIGTERM .
+.It [server exited unexpectedly]
+The server crashed or otherwise exited without telling the client the reason.
+.El
 .Sh TERMINFO EXTENSIONS
 .Nm
 understands some unofficial extensions to

tmux.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/utsname.h>
 
 #include <errno.h>
 #include <event.h>
@@ -127,6 +128,7 @@ make_label(const char *label, char **cause)
 		free(base);
 		goto fail;
 	}
+	free(base);
 
 	if (mkdir(resolved, S_IRWXU) != 0 && errno != EEXIST)
 		goto fail;
@@ -208,6 +210,12 @@ find_home(void)
 	return (home);
 }
 
+const char *
+getversion(void)
+{
+	return TMUX_VERSION;
+}
+
 int
 main(int argc, char **argv)
 {
@@ -234,7 +242,7 @@ main(int argc, char **argv)
 		flags = 0;
 
 	label = path = NULL;
-	while ((opt = getopt(argc, argv, "2c:Cdf:lL:qS:uUVv")) != -1) {
+	while ((opt = getopt(argc, argv, "2c:Cdf:lL:qS:uUvV")) != -1) {
 		switch (opt) {
 		case '2':
 			flags |= CLIENT_256COLOURS;
@@ -248,12 +256,12 @@ main(int argc, char **argv)
 			else
 				flags |= CLIENT_CONTROL;
 			break;
-		case 'V':
-			printf("%s %s\n", getprogname(), VERSION);
-			exit(0);
 		case 'f':
 			set_cfg_file(optarg);
 			break;
+ 		case 'V':
+			printf("%s %s\n", getprogname(), getversion());
+ 			exit(0);
 		case 'l':
 			flags |= CLIENT_LOGIN;
 			break;

tmux.h

@@ -62,9 +62,9 @@ struct winlink;
 /* Client-server protocol version. */
 #define PROTOCOL_VERSION 8
 
-/* Default global configuration file. */
+/* Default configuration files. */
 #ifndef TMUX_CONF
-#define TMUX_CONF "/etc/tmux.conf"
+#define TMUX_CONF "/etc/tmux.conf:~/.tmux.conf"
 #endif
 
 /* Minimum layout cell size, NOT including border lines. */
@@ -80,6 +80,10 @@ struct winlink;
 /* Maximum size of data to hold from a pane. */
 #define READ_SIZE 4096
 
+/* Default pixel cell sizes. */
+#define DEFAULT_XPIXEL 16
+#define DEFAULT_YPIXEL 32
+
 /* Attribute to make GCC check printf-like arguments. */
 #define printflike(a, b) __attribute__ ((format (printf, a, b)))
 
@@ -476,13 +480,21 @@ enum msgtype {
 	MSG_RESIZE,
 	MSG_SHELL,
 	MSG_SHUTDOWN,
-	MSG_STDERR,
-	MSG_STDIN,
-	MSG_STDOUT,
+	MSG_OLDSTDERR, /* unused */
+	MSG_OLDSTDIN, /* unused */
+	MSG_OLDSTDOUT, /* unused */
 	MSG_SUSPEND,
 	MSG_UNLOCK,
 	MSG_WAKEUP,
 	MSG_EXEC,
+
+	MSG_READ_OPEN = 300,
+	MSG_READ,
+	MSG_READ_DONE,
+	MSG_WRITE_OPEN,
+	MSG_WRITE,
+	MSG_WRITE_READY,
+	MSG_WRITE_CLOSE
 };
 
 /*
@@ -490,23 +502,41 @@ enum msgtype {
  *
  * Don't forget to bump PROTOCOL_VERSION if any of these change!
  */
-struct msg_command_data {
+struct msg_command {
 	int	argc;
 }; /* followed by packed argv */
 
-struct msg_stdin_data {
-	ssize_t	size;
-	char	data[BUFSIZ];
+struct msg_read_open {
+	int	stream;
+	int	fd;
+}; /* followed by path */
+
+struct msg_read_data {
+	int	stream;
 };
 
-struct msg_stdout_data {
-	ssize_t	size;
-	char	data[BUFSIZ];
+struct msg_read_done {
+	int	stream;
+	int	error;
 };
 
-struct msg_stderr_data {
-	ssize_t	size;
-	char	data[BUFSIZ];
+struct msg_write_open {
+	int	stream;
+	int	fd;
+	int	flags;
+}; /* followed by path */
+
+struct msg_write_data {
+	int	stream;
+}; /* followed by data */
+
+struct msg_write_ready {
+	int	stream;
+	int	error;
+};
+
+struct msg_write_close {
+	int	stream;
 };
 
 /* Mode keys. */
@@ -682,6 +712,13 @@ struct style_range {
 };
 TAILQ_HEAD(style_ranges, style_range);
 
+/* Style default. */
+enum style_default_type {
+	STYLE_DEFAULT_BASE,
+	STYLE_DEFAULT_PUSH,
+	STYLE_DEFAULT_POP
+};
+
 /* Style option. */
 struct style {
 	struct grid_cell	gc;
@@ -692,6 +729,8 @@ struct style {
 
 	enum style_range_type	range_type;
 	u_int			range_argument;
+
+	enum style_default_type	default_type;
 };
 
 /* Virtual screen. */
@@ -699,6 +738,7 @@ struct screen_sel;
 struct screen_titles;
 struct screen {
 	char			*title;
+	char			*path;
 	struct screen_titles	*titles;
 
 	struct grid		*grid;		/* grid data */
@@ -845,6 +885,7 @@ struct window_pane {
 #define PANE_STATUSDRAWN 0x400
 #define PANE_EMPTY 0x800
 #define PANE_STYLECHANGED 0x1000
+#define PANE_RESIZED 0x2000
 
 	int		 argc;
 	char	       **argv;
@@ -897,6 +938,7 @@ RB_HEAD(window_pane_tree, window_pane);
 /* Window structure. */
 struct window {
 	u_int		 id;
+	void		*latest;
 
 	char		*name;
 	struct event	 name_event;
@@ -918,12 +960,15 @@ struct window {
 
 	u_int		 sx;
 	u_int		 sy;
+	u_int		 xpixel;
+	u_int		 ypixel;
 
 	int		 flags;
 #define WINDOW_BELL 0x1
 #define WINDOW_ACTIVITY 0x2
 #define WINDOW_SILENCE 0x4
 #define WINDOW_ZOOMED 0x8
+#define WINDOW_WASZOOMED 0x10
 #define WINDOW_ALERTFLAGS (WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_SILENCE)
 
 	int		 alerts_queued;
@@ -961,6 +1006,7 @@ TAILQ_HEAD(winlink_stack, winlink);
 #define WINDOW_SIZE_LARGEST 0
 #define WINDOW_SIZE_SMALLEST 1
 #define WINDOW_SIZE_MANUAL 2
+#define WINDOW_SIZE_LATEST 3
 
 /* Pane border status option. */
 #define PANE_STATUS_OFF 0
@@ -1124,7 +1170,10 @@ struct tty_term {
 	struct tty_code	*codes;
 
 #define TERM_256COLOURS 0x1
-#define TERM_EARLYWRAP 0x2
+#define TERM_NOXENL 0x2
+#define TERM_DECSLRM 0x4
+#define TERM_DECFRA 0x8
+#define TERM_RGBCOLOURS 0x10
 	int		 flags;
 
 	LIST_ENTRY(tty_term) entry;
@@ -1133,9 +1182,12 @@ LIST_HEAD(tty_terms, tty_term);
 
 struct tty {
 	struct client	*client;
+	struct event	 start_timer;
 
 	u_int		 sx;
 	u_int		 sy;
+	u_int		 xpixel;
+	u_int		 ypixel;
 
 	u_int		 cx;
 	u_int		 cy;
@@ -1179,20 +1231,13 @@ struct tty {
 #define TTY_OPENED 0x20
 #define TTY_FOCUS 0x40
 #define TTY_BLOCK 0x80
+#define TTY_HAVEDA 0x100
+#define TTY_HAVEDSR 0x200
 	int		 flags;
 
 	struct tty_term	*term;
 	char		*term_name;
 	int		 term_flags;
-	enum {
-		TTY_VT100,
-		TTY_VT101,
-		TTY_VT102,
-		TTY_VT220,
-		TTY_VT320,
-		TTY_VT420,
-		TTY_UNKNOWN
-	} term_type;
 
 	u_int		 mouse_last_x;
 	u_int		 mouse_last_y;
@@ -1206,8 +1251,6 @@ struct tty {
 	struct event	 key_timer;
 	struct tty_key	*key_tree;
 };
-#define TTY_TYPES \
-	{ "VT100", "VT101", "VT102", "VT220", "VT320", "VT420", "Unknown" }
 
 /* TTY command context. */
 struct tty_ctx {
@@ -1216,8 +1259,8 @@ struct tty_ctx {
 	const struct grid_cell	*cell;
 	int			 wrapped;
 
-	u_int		 num;
-	void		*ptr;
+	u_int			 num;
+	void			*ptr;
 
 	/*
 	 * Cursor and region position before the screen was updated - this is
@@ -1446,6 +1489,29 @@ struct status_line {
 	struct status_line_entry entries[STATUS_LINES_LIMIT];
 };
 
+/* File in client. */
+typedef void (*client_file_cb) (struct client *, const char *, int, int,
+    struct evbuffer *, void *);
+struct client_file {
+	struct client			*c;
+	int				 references;
+	int				 stream;
+
+	char				*path;
+	struct evbuffer			*buffer;
+	struct bufferevent		*event;
+
+	int				 fd;
+	int				 error;
+	int				 closed;
+
+	client_file_cb			 cb;
+	void				*data;
+
+	RB_ENTRY (client_file)		 entry;
+};
+RB_HEAD(client_files, client_file);
+
 /* Client connection. */
 typedef int (*prompt_input_cb)(struct client *, void *, const char *, int);
 typedef void (*prompt_free_cb)(void *);
@@ -1479,13 +1545,6 @@ struct client {
 	size_t		 discarded;
 	size_t		 redraw;
 
-	void		(*stdin_callback)(struct client *, int, void *);
-	void		*stdin_callback_data;
-	struct evbuffer	*stdin_data;
-	int		 stdin_closed;
-	struct evbuffer	*stdout_data;
-	struct evbuffer	*stderr_data;
-
 	struct event	 repeat_timer;
 
 	struct event	 click_timer;
@@ -1526,6 +1585,10 @@ struct client {
 	 CLIENT_REDRAWSTATUSALWAYS|	\
 	 CLIENT_REDRAWBORDERS|		\
 	 CLIENT_REDRAWOVERLAY)
+#define CLIENT_UNATTACHEDFLAGS	\
+	(CLIENT_DEAD|		\
+	 CLIENT_SUSPENDED|	\
+	 CLIENT_DETACHING)
 #define CLIENT_NOSIZEFLAGS	\
 	(CLIENT_DEAD|		\
 	 CLIENT_SUSPENDED|	\
@@ -1552,6 +1615,7 @@ struct client {
 #define PROMPT_NUMERIC 0x2
 #define PROMPT_INCREMENTAL 0x4
 #define PROMPT_NOFORMAT 0x8
+#define PROMPT_KEY 0x10
 	int		 prompt_flags;
 
 	struct session	*session;
@@ -1569,6 +1633,8 @@ struct client {
 	void		*overlay_data;
 	struct event	 overlay_timer;
 
+	struct client_files files;
+
 	TAILQ_ENTRY(client) entry;
 };
 TAILQ_HEAD(clients, client);
@@ -1577,6 +1643,7 @@ TAILQ_HEAD(clients, client);
 struct key_binding {
 	key_code		 key;
 	struct cmd_list		*cmdlist;
+	const char		*note;
 
 	int			 flags;
 #define KEY_BINDING_REPEAT 0x1
@@ -1661,6 +1728,7 @@ struct spawn_context {
 
 	struct session		 *s;
 	struct winlink		 *wl;
+	struct client		 *c;
 
 	struct window_pane	 *wp0;
 	struct layout_cell	 *lc;
@@ -1683,6 +1751,12 @@ struct spawn_context {
 #define SPAWN_EMPTY 0x40
 };
 
+/* Mode tree sort order. */
+struct mode_tree_sort_criteria {
+	u_int	field;
+	int	reversed;
+};
+
 /* tmux.c */
 extern struct options	*global_options;
 extern struct options	*global_s_options;
@@ -1697,6 +1771,7 @@ int		 areshell(const char *);
 void		 setblocking(int, int);
 const char	*find_cwd(void);
 const char	*find_home(void);
+const char	*getversion(void);
 
 /* proc.c */
 struct imsg;
@@ -1718,6 +1793,8 @@ extern struct client *cfg_client;
 void	start_cfg(void);
 int	load_cfg(const char *, struct client *, struct cmdq_item *, int,
 	    struct cmdq_item **);
+int	load_cfg_from_buffer(const void *, size_t, const char *,
+	    struct client *, struct cmdq_item *, int, struct cmdq_item **);
 void	set_cfg_file(const char *);
 void printflike(1, 2) cfg_add_cause(const char *, ...);
 void	cfg_print_causes(struct cmdq_item *);
@@ -1769,6 +1846,8 @@ void		 format_defaults_pane(struct format_tree *,
 void		 format_defaults_paste_buffer(struct format_tree *,
 		     struct paste_buffer *);
 void		 format_lost_client(struct client *);
+char		*format_grid_word(struct grid *, u_int, u_int);
+char		*format_grid_line(struct grid *, u_int);
 
 /* format-draw.c */
 void		 format_draw(struct screen_write_ctx *,
@@ -1898,7 +1977,7 @@ void	tty_putc(struct tty *, u_char);
 void	tty_putn(struct tty *, const void *, size_t, u_int);
 int	tty_init(struct tty *, struct client *, int, char *);
 void	tty_resize(struct tty *);
-void	tty_set_size(struct tty *, u_int, u_int);
+void	tty_set_size(struct tty *, u_int, u_int, u_int, u_int);
 void	tty_start_tty(struct tty *);
 void	tty_stop_tty(struct tty *);
 void	tty_set_title(struct tty *, const char *);
@@ -1908,7 +1987,7 @@ void	tty_draw_line(struct tty *, struct window_pane *, struct screen *,
 int	tty_open(struct tty *, char **);
 void	tty_close(struct tty *);
 void	tty_free(struct tty *);
-void	tty_set_type(struct tty *, int);
+void	tty_set_flags(struct tty *, int);
 void	tty_write(void (*)(struct tty *, const struct tty_ctx *),
 	    struct tty_ctx *);
 void	tty_cmd_alignmenttest(struct tty *, const struct tty_ctx *);
@@ -2033,6 +2112,8 @@ void	    	 cmd_parse_empty(struct cmd_parse_input *);
 struct cmd_parse_result *cmd_parse_from_file(FILE *, struct cmd_parse_input *);
 struct cmd_parse_result *cmd_parse_from_string(const char *,
 		     struct cmd_parse_input *);
+struct cmd_parse_result *cmd_parse_from_buffer(const void *, size_t,
+		     struct cmd_parse_input *);
 struct cmd_parse_result *cmd_parse_from_arguments(int, char **,
 		     struct cmd_parse_input *);
 
@@ -2049,8 +2130,8 @@ struct cmdq_item *cmdq_get_command(struct cmd_list *, struct cmd_find_state *,
 #define cmdq_get_callback(cb, data) cmdq_get_callback1(#cb, cb, data)
 struct cmdq_item *cmdq_get_callback1(const char *, cmdq_cb, void *);
 struct cmdq_item *cmdq_get_error(const char *);
-void		 cmdq_insert_after(struct cmdq_item *, struct cmdq_item *);
-void		 cmdq_append(struct client *, struct cmdq_item *);
+struct cmdq_item *cmdq_insert_after(struct cmdq_item *, struct cmdq_item *);
+struct cmdq_item *cmdq_append(struct client *, struct cmdq_item *);
 void		 cmdq_insert_hook(struct session *, struct cmdq_item *,
 		     struct cmd_find_state *, const char *, ...);
 void		 cmdq_continue(struct cmdq_item *);
@@ -2075,7 +2156,8 @@ void	 key_bindings_unref_table(struct key_table *);
 struct key_binding *key_bindings_get(struct key_table *, key_code);
 struct key_binding *key_bindings_first(struct key_table *);
 struct key_binding *key_bindings_next(struct key_table *, struct key_binding *);
-void	 key_bindings_add(const char *, key_code, int, struct cmd_list *);
+void	 key_bindings_add(const char *, key_code, const char *, int,
+	     struct cmd_list *);
 void	 key_bindings_remove(const char *, key_code);
 void	 key_bindings_remove_table(const char *);
 void	 key_bindings_init(void);
@@ -2092,6 +2174,23 @@ void	alerts_reset_all(void);
 void	alerts_queue(struct window *, int);
 void	alerts_check_session(struct session *);
 
+/* file.c */
+int	 file_cmp(struct client_file *, struct client_file *);
+RB_PROTOTYPE(client_files, client_file, entry, file_cmp);
+struct client_file *file_create(struct client *, int, client_file_cb, void *);
+void	 file_free(struct client_file *);
+void	 file_fire_done(struct client_file *);
+void	 file_fire_read(struct client_file *);
+int	 file_can_print(struct client *);
+void printflike(2, 3) file_print(struct client *, const char *, ...);
+void 	 file_vprint(struct client *, const char *, va_list);
+void 	 file_print_buffer(struct client *, void *, size_t);
+void printflike(2, 3) file_error(struct client *, const char *, ...);
+void	 file_write(struct client *, const char *, int, const void *, size_t,
+	     client_file_cb, void *);
+void	 file_read(struct client *, const char *, client_file_cb, void *);
+void	 file_push(struct client_file *);
+
 /* server.c */
 extern struct tmuxproc *server_proc;
 extern struct clients clients;
@@ -2126,7 +2225,6 @@ void	 server_client_push_stdout(struct client *);
 void	 server_client_push_stderr(struct client *);
 void printflike(2, 3) server_client_add_message(struct client *, const char *,
 	     ...);
-char	*server_client_get_path(struct client *, const char *);
 const char *server_client_get_cwd(struct client *, struct session *);
 
 /* server-fn.c */
@@ -2150,8 +2248,6 @@ void	 server_unlink_window(struct session *, struct winlink *);
 void	 server_destroy_pane(struct window_pane *, int);
 void	 server_destroy_session(struct session *);
 void	 server_check_unattached(void);
-int	 server_set_stdin_callback(struct client *, void (*)(struct client *,
-	     int, void *), void *, char **);
 void	 server_unzoom_window(struct window *);
 
 /* status.c */
@@ -2177,9 +2273,10 @@ void	 status_prompt_load_history(void);
 void	 status_prompt_save_history(void);
 
 /* resize.c */
-void	 resize_window(struct window *, u_int, u_int);
-void	 default_window_size(struct session *, struct window *, u_int *,
-	     u_int *, int);
+void	 resize_window(struct window *, u_int, u_int, int, int);
+void	 default_window_size(struct client *, struct session *, struct window *,
+	     u_int *, u_int *, u_int *, u_int *, int);
+void	 recalculate_size(struct window *);
 void	 recalculate_sizes(void);
 
 /* input.c */
@@ -2191,7 +2288,7 @@ void	 input_parse(struct window_pane *);
 void	 input_parse_buffer(struct window_pane *, u_char *, size_t);
 
 /* input-key.c */
-void	 input_key(struct window_pane *, key_code, struct mouse_event *);
+int	 input_key(struct window_pane *, key_code, struct mouse_event *);
 
 /* xterm-keys.c */
 char	*xterm_keys_lookup(key_code);
@@ -2329,7 +2426,8 @@ void	 screen_free(struct screen *);
 void	 screen_reset_tabs(struct screen *);
 void	 screen_set_cursor_style(struct screen *, u_int);
 void	 screen_set_cursor_colour(struct screen *, const char *);
-void	 screen_set_title(struct screen *, const char *);
+int	 screen_set_title(struct screen *, const char *);
+void	 screen_set_path(struct screen *, const char *);
 void	 screen_push_title(struct screen *);
 void	 screen_pop_title(struct screen *);
 void	 screen_resize(struct screen *, u_int, u_int, int);
@@ -2369,7 +2467,7 @@ void		 winlink_stack_remove(struct winlink_stack *, struct winlink *);
 struct window	*window_find_by_id_str(const char *);
 struct window	*window_find_by_id(u_int);
 void		 window_update_activity(struct window *);
-struct window	*window_create(u_int, u_int);
+struct window	*window_create(u_int, u_int, u_int, u_int);
 void		 window_pane_set_event(struct window_pane *);
 struct window_pane *window_get_active_at(struct window *, u_int, u_int);
 struct window_pane *window_find_string(struct window *, const char *);
@@ -2380,9 +2478,12 @@ void		 window_redraw_active_switch(struct window *,
 		     struct window_pane *);
 struct window_pane *window_add_pane(struct window *, struct window_pane *,
 		     u_int, int);
-void		 window_resize(struct window *, u_int, u_int);
+void		 window_resize(struct window *, u_int, u_int, int, int);
+void		 window_pane_send_resize(struct window_pane *, int);
 int		 window_zoom(struct window_pane *);
 int		 window_unzoom(struct window *);
+int		 window_push_zoom(struct window *, int);
+int		 window_pop_zoom(struct window *);
 void		 window_lost_pane(struct window *, struct window_pane *);
 void		 window_remove_pane(struct window *, struct window_pane *);
 struct window_pane *window_pane_at_index(struct window *, u_int);
@@ -2410,7 +2511,7 @@ int		 window_pane_set_mode(struct window_pane *,
 		     struct args *);
 void		 window_pane_reset_mode(struct window_pane *);
 void		 window_pane_reset_mode_all(struct window_pane *);
-void		 window_pane_key(struct window_pane *, struct client *,
+int		 window_pane_key(struct window_pane *, struct client *,
 		     struct session *, struct winlink *, key_code,
 		     struct mouse_event *);
 int		 window_pane_visible(struct window_pane *);
@@ -2472,7 +2573,8 @@ u_int		 layout_set_next(struct window *);
 u_int		 layout_set_previous(struct window *);
 
 /* mode-tree.c */
-typedef void (*mode_tree_build_cb)(void *, u_int, uint64_t *, const char *);
+typedef void (*mode_tree_build_cb)(void *, struct mode_tree_sort_criteria *,
+				   uint64_t *, const char *);
 typedef void (*mode_tree_draw_cb)(void *, void *, struct screen_write_ctx *,
 	     u_int, u_int);
 typedef int (*mode_tree_search_cb)(void *, void *, const char *);
@@ -2530,9 +2632,8 @@ char	*default_window_name(struct window *);
 char	*parse_window_name(const char *);
 
 /* control.c */
-void	control_callback(struct client *, int, void *);
+void	control_start(struct client *);
 void printflike(2, 3) control_write(struct client *, const char *, ...);
-void	control_write_buffer(struct client *, struct evbuffer *);
 
 /* control-notify.c */
 void	control_notify_input(struct client *, struct window_pane *,
@@ -2585,6 +2686,7 @@ void		 session_group_add(struct session_group *, struct session *);
 void		 session_group_synchronize_to(struct session *);
 void		 session_group_synchronize_from(struct session *);
 u_int		 session_group_count(struct session_group *);
+u_int		 session_group_attached_count(struct session_group *);
 void		 session_renumber_windows(struct session *);
 
 /* utf8.c */
@@ -2604,6 +2706,7 @@ struct utf8_data *utf8_fromcstr(const char *);
 char		*utf8_tocstr(struct utf8_data *);
 u_int		 utf8_cstrwidth(const char *);
 char		*utf8_padcstr(const char *, u_int);
+char		*utf8_rpadcstr(const char *, u_int);
 int		 utf8_cstrhas(const char *, const struct utf8_data *);
 
 /* osdep-*.c */
@@ -2641,8 +2744,6 @@ int		 style_parse(struct style *,const struct grid_cell *,
 const char	*style_tostring(struct style *);
 void		 style_apply(struct grid_cell *, struct options *,
 		     const char *);
-void		 style_apply_update(struct grid_cell *, struct options *,
-		     const char *);
 int		 style_equal(struct style *, struct style *);
 void		 style_set(struct style *, const struct grid_cell *);
 void		 style_copy(struct style *, struct style *);

tty-keys.c

@@ -52,6 +52,8 @@ static int	tty_keys_clipboard(struct tty *, const char *, size_t,
 		    size_t *);
 static int	tty_keys_device_attributes(struct tty *, const char *, size_t,
 		    size_t *);
+static int	tty_keys_device_status_report(struct tty *, const char *,
+		    size_t, size_t *);
 
 /* Default raw keys. */
 struct tty_default_key_raw {
@@ -607,6 +609,17 @@ tty_keys_next(struct tty *tty)
 		goto partial_key;
 	}
 
+	/* Is this a device status report response? */
+	switch (tty_keys_device_status_report(tty, buf, len, &size)) {
+	case 0:		/* yes */
+		key = KEYC_UNKNOWN;
+		goto complete_key;
+	case -1:	/* no, or not valid */
+		break;
+	case 1:		/* partial */
+		goto partial_key;
+	}
+
 	/* Is this a mouse key press? */
 	switch (tty_keys_mouse(tty, buf, len, &size, &m)) {
 	case 0:		/* yes */
@@ -1001,13 +1014,14 @@ static int
 tty_keys_device_attributes(struct tty *tty, const char *buf, size_t len,
     size_t *size)
 {
-	struct client		*c = tty->client;
-	u_int			 i, a, b;
-	char			 tmp[64], *endptr;
-	static const char	*types[] = TTY_TYPES;
-	int			 type;
+	struct client	*c = tty->client;
+	u_int		 i, n = 0;
+	char		 tmp[64], *endptr, p[32] = { 0 }, *cp, *next;
+	int		 flags = 0;
 
 	*size = 0;
+	if (tty->flags & TTY_HAVEDA)
+		return (-1);
 
 	/* First three bytes are always \033[?. */
 	if (buf[0] != '\033')
@@ -1035,39 +1049,81 @@ tty_keys_device_attributes(struct tty *tty, const char *buf, size_t len,
 	*size = 4 + i;
 
 	/* Convert version numbers. */
-	a = strtoul(tmp, &endptr, 10);
-	if (*endptr == ';') {
-		b = strtoul(endptr + 1, &endptr, 10);
-		if (*endptr != '\0' && *endptr != ';')
-			b = 0;
-	} else
-		a = b = 0;
+	cp = tmp;
+	while ((next = strsep(&cp, ";")) != NULL) {
+		p[n] = strtoul(next, &endptr, 10);
+		if (*endptr != '\0')
+			p[n] = 0;
+		n++;
+	}
 
-	/* Store terminal type. */
-	type = TTY_UNKNOWN;
-	switch (a) {
-	case 1:
-		if (b == 2)
-			type = TTY_VT100;
-		else if (b == 0)
-			type = TTY_VT101;
-		break;
-	case 6:
-		type = TTY_VT102;
-		break;
-	case 62:
-		type = TTY_VT220;
-		break;
-	case 63:
-		type = TTY_VT320;
-		break;
-	case 64:
-		type = TTY_VT420;
+	/* Set terminal flags. */
+	switch (p[0]) {
+	case 64: /* VT420 */
+		flags |= (TERM_DECFRA|TERM_DECSLRM);
 		break;
 	}
-	tty_set_type(tty, type);
+	for (i = 1; i < n; i++)
+		log_debug("%s: DA feature: %d", c->name, p[i]);
+	log_debug("%s: received DA %.*s", c->name, (int)*size, buf);
+
+	tty_set_flags(tty, flags);
+	tty->flags |= TTY_HAVEDA;
+
+	return (0);
+}
+
+/*
+ * Handle device status report input. Returns 0 for success, -1 for failure, 1
+ * for partial.
+ */
+static int
+tty_keys_device_status_report(struct tty *tty, const char *buf, size_t len,
+    size_t *size)
+{
+	struct client	*c = tty->client;
+	u_int		 i;
+	char		 tmp[64];
+	int		 flags = 0;
+
+	*size = 0;
+	if (tty->flags & TTY_HAVEDSR)
+		return (-1);
+
+	/* First three bytes are always \033[. */
+	if (buf[0] != '\033')
+		return (-1);
+	if (len == 1)
+		return (1);
+	if (buf[1] != '[')
+		return (-1);
+	if (len == 2)
+		return (1);
+	if (buf[2] != 'I' && buf[2] != 'T')
+		return (-1);
+	if (len == 3)
+		return (1);
+
+	/* Copy the rest up to a 'n'. */
+	for (i = 0; i < (sizeof tmp) - 1 && buf[2 + i] != 'n'; i++) {
+		if (2 + i == len)
+			return (1);
+		tmp[i] = buf[2 + i];
+	}
+	if (i == (sizeof tmp) - 1)
+		return (-1);
+	tmp[i] = '\0';
+	*size = 3 + i;
+
+	/* Set terminal flags. */
+	if (strncmp(tmp, "ITERM2 ", 7) == 0)
+		flags |= (TERM_DECSLRM|TERM_256COLOURS|TERM_RGBCOLOURS);
+	if (strncmp(tmp, "TMUX ", 5) == 0)
+		flags |= (TERM_256COLOURS|TERM_RGBCOLOURS);
+	log_debug("%s: received DSR %.*s", c->name, (int)*size, buf);
+
+	tty_set_flags(tty, flags);
+	tty->flags |= TTY_HAVEDSR;
 
-	log_debug("%s: received DA %.*s (%s)", c->name, (int)*size, buf,
-	    types[type]);
 	return (0);
 }

tty-term.c

@@ -528,11 +528,16 @@ tty_term_find(char *name, int fd, char **cause)
 		goto error;
 	}
 
-	/* Figure out if we have 256 colours (or more). */
-	if (tty_term_number(term, TTYC_COLORS) >= 256 ||
-	    tty_term_has(term, TTYC_RGB))
+	/* Set flag if terminal has 256 colours. */
+	if (tty_term_number(term, TTYC_COLORS) >= 256)
 		term->flags |= TERM_256COLOURS;
 
+	/* Set flag if terminal has RGB colours. */
+	if ((tty_term_flag(term, TTYC_TC) || tty_term_has(term, TTYC_RGB)) ||
+	    (tty_term_has(term, TTYC_SETRGBF) &&
+	    tty_term_has(term, TTYC_SETRGBB)))
+		term->flags |= TERM_RGBCOLOURS;
+
 	/*
 	 * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1
 	 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1).
@@ -544,7 +549,7 @@ tty_term_find(char *name, int fd, char **cause)
 	 * do the best possible.
 	 */
 	if (!tty_term_flag(term, TTYC_XENL))
-		term->flags |= TERM_EARLYWRAP;
+		term->flags |= TERM_NOXENL;
 
 	/* Generate ACS table. If none is present, use nearest ASCII. */
 	memset(term->acs, 0, sizeof term->acs);
@@ -567,22 +572,7 @@ tty_term_find(char *name, int fd, char **cause)
 		code->type = TTYCODE_STRING;
 	}
 
-	/*
-	 * On terminals with RGB colour (Tc or RGB), fill in setrgbf and
-	 * setrgbb if they are missing.
-	 */
-	if ((tty_term_flag(term, TTYC_TC) || tty_term_flag(term, TTYC_RGB)) &&
-	    !tty_term_has(term, TTYC_SETRGBF) &&
-	    !tty_term_has(term, TTYC_SETRGBB)) {
-		code = &term->codes[TTYC_SETRGBF];
-		code->value.string = xstrdup("\033[38;2;%p1%d;%p2%d;%p3%dm");
-		code->type = TTYCODE_STRING;
-		code = &term->codes[TTYC_SETRGBB];
-		code->value.string = xstrdup("\033[48;2;%p1%d;%p2%d;%p3%dm");
-		code->type = TTYCODE_STRING;
-	}
-
-	/* Log it. */
+	/* Log the capabilities. */
 	for (i = 0; i < tty_term_ncodes(); i++)
 		log_debug("%s%s", name, tty_term_describe(term, i));
 
@@ -642,7 +632,8 @@ tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b)
 }
 
 const char *
-tty_term_string3(struct tty_term *term, enum tty_code_code code, int a, int b, int c)
+tty_term_string3(struct tty_term *term, enum tty_code_code code, int a, int b,
+    int c)
 {
 	return (tparm((char *) tty_term_string(term, code), a, b, c, 0, 0, 0, 0, 0, 0));
 }

tty.c

@@ -74,7 +74,7 @@ static void	tty_default_attributes(struct tty *, struct window_pane *,
 		    u_int);
 
 #define tty_use_margin(tty) \
-	((tty)->term_type == TTY_VT420)
+	((tty->term->flags|tty->term_flags) & TERM_DECSLRM)
 
 #define tty_pane_full_width(tty, ctx) \
 	((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
@@ -115,9 +115,7 @@ tty_init(struct tty *tty, struct client *c, int fd, char *term)
 	tty->ccolour = xstrdup("");
 
 	tty->flags = 0;
-
 	tty->term_flags = 0;
-	tty->term_type = TTY_UNKNOWN;
 
 	return (0);
 }
@@ -127,29 +125,40 @@ tty_resize(struct tty *tty)
 {
 	struct client	*c = tty->client;
 	struct winsize	 ws;
-	u_int		 sx, sy;
+	u_int		 sx, sy, xpixel, ypixel;
 
 	if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
 		sx = ws.ws_col;
-		if (sx == 0)
+		if (sx == 0) {
 			sx = 80;
+			xpixel = 0;
+		} else
+			xpixel = ws.ws_xpixel / sx;
 		sy = ws.ws_row;
-		if (sy == 0)
+		if (sy == 0) {
 			sy = 24;
+			ypixel = 0;
+		} else
+			ypixel = ws.ws_ypixel / sy;
 	} else {
 		sx = 80;
 		sy = 24;
+		xpixel = 0;
+		ypixel = 0;
 	}
-	log_debug("%s: %s now %ux%u", __func__, c->name, sx, sy);
-	tty_set_size(tty, sx, sy);
+	log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
+	    xpixel, ypixel);
+	tty_set_size(tty, sx, sy, xpixel, ypixel);
 	tty_invalidate(tty);
 }
 
 void
-tty_set_size(struct tty *tty, u_int sx, u_int sy)
+tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
 {
 	tty->sx = sx;
 	tty->sy = sy;
+	tty->xpixel = xpixel;
+	tty->ypixel = ypixel;
 }
 
 static void
@@ -276,11 +285,22 @@ tty_open(struct tty *tty, char **cause)
 	return (0);
 }
 
+static void
+tty_start_timer_callback(__unused int fd, __unused short events, void *data)
+{
+	struct tty	*tty = data;
+	struct client	*c = tty->client;
+
+	log_debug("%s: start timer fired", c->name);
+	tty->flags |= (TTY_HAVEDA|TTY_HAVEDSR);
+}
+
 void
 tty_start_tty(struct tty *tty)
 {
 	struct client	*c = tty->client;
 	struct termios	 tio;
+	struct timeval	 tv = { .tv_sec = 1 };
 
 	if (tty->fd != -1 && tcgetattr(tty->fd, &tty->tio) == 0) {
 		setblocking(tty->fd, 0);
@@ -318,13 +338,21 @@ tty_start_tty(struct tty *tty)
 			tty->flags |= TTY_FOCUS;
 			tty_puts(tty, "\033[?1004h");
 		}
-		tty_puts(tty, "\033[c");
-	}
+		if (~tty->flags & TTY_HAVEDA)
+			tty_puts(tty, "\033[c");
+		if (~tty->flags & TTY_HAVEDSR)
+			tty_puts(tty, "\033[1337n");
+	} else
+		tty->flags |= (TTY_HAVEDA|TTY_HAVEDSR);
+
+	evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
+	evtimer_add(&tty->start_timer, &tv);
 
 	tty->flags |= TTY_STARTED;
 	tty_invalidate(tty);
 
-	tty_force_cursor_colour(tty, "");
+	if (*tty->ccolour != '\0')
+		tty_force_cursor_colour(tty, "");
 
 	tty->mouse_drag_flag = 0;
 	tty->mouse_drag_update = NULL;
@@ -340,6 +368,8 @@ tty_stop_tty(struct tty *tty)
 		return;
 	tty->flags &= ~TTY_STARTED;
 
+	evtimer_del(&tty->start_timer);
+
 	event_del(&tty->timer);
 	tty->flags &= ~TTY_BLOCK;
 
@@ -370,7 +400,8 @@ tty_stop_tty(struct tty *tty)
 	}
 	if (tty->mode & MODE_BRACKETPASTE)
 		tty_raw(tty, "\033[?2004l");
-	tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
+	if (*tty->ccolour != '\0')
+		tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
 
 	tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
 	if (tty_term_has(tty->term, TTYC_KMOUS))
@@ -425,9 +456,9 @@ tty_free(struct tty *tty)
 }
 
 void
-tty_set_type(struct tty *tty, int type)
+tty_set_flags(struct tty *tty, int flags)
 {
-	tty->term_type = type;
+	tty->term_flags |= flags;
 
 	if (tty_use_margin(tty))
 		tty_puts(tty, "\033[?69h"); /* DECLRMM */
@@ -530,7 +561,7 @@ tty_putc(struct tty *tty, u_char ch)
 {
 	const char	*acs;
 
-	if ((tty->term->flags & TERM_EARLYWRAP) &&
+	if ((tty->term->flags & TERM_NOXENL) &&
 	    ch >= 0x20 && ch != 0x7f &&
 	    tty->cy == tty->sy - 1 &&
 	    tty->cx + 1 >= tty->sx)
@@ -556,7 +587,7 @@ tty_putc(struct tty *tty, u_char ch)
 			 * where we think it should be after a line wrap - this
 			 * means it works on sensible terminals as well.
 			 */
-			if (tty->term->flags & TERM_EARLYWRAP)
+			if (tty->term->flags & TERM_NOXENL)
 				tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
 		} else
 			tty->cx++;
@@ -566,7 +597,7 @@ tty_putc(struct tty *tty, u_char ch)
 void
 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
 {
-	if ((tty->term->flags & TERM_EARLYWRAP) &&
+	if ((tty->term->flags & TERM_NOXENL) &&
 	    tty->cy == tty->sy - 1 &&
 	    tty->cx + len >= tty->sx)
 		len = tty->sx - tty->cx - 1;
@@ -1116,7 +1147,8 @@ tty_clear_area(struct tty *tty, struct window_pane *wp, u_int py, u_int ny,
 		 * background colour isn't default (because it doesn't work
 		 * after SGR 0).
 		 */
-		if (tty->term_type == TTY_VT420 && !COLOUR_DEFAULT(bg)) {
+		if (((tty->term->flags|tty->term_flags) & TERM_DECFRA) &&
+		    !COLOUR_DEFAULT(bg)) {
 			xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
 			    py + 1, px + 1, py + ny, px + nx);
 			tty_puts(tty, tmp);
@@ -1811,7 +1843,7 @@ tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
 	    ctx->xoff + ctx->ocx + ctx->num > ctx->ox + ctx->sx)) {
 		if (!ctx->wrapped ||
 		    !tty_pane_full_width(tty, ctx) ||
-		    (tty->term->flags & TERM_EARLYWRAP) ||
+		    (tty->term->flags & TERM_NOXENL) ||
 		    ctx->xoff + ctx->ocx != 0 ||
 		    ctx->yoff + ctx->ocy != tty->cy + 1 ||
 		    tty->cx < tty->sx ||
@@ -1860,7 +1892,7 @@ tty_cell(struct tty *tty, const struct grid_cell *gc, struct window_pane *wp)
 	const struct grid_cell	*gcp;
 
 	/* Skip last character if terminal is stupid. */
-	if ((tty->term->flags & TERM_EARLYWRAP) &&
+	if ((tty->term->flags & TERM_NOXENL) &&
 	    tty->cy == tty->sy - 1 &&
 	    tty->cx == tty->sx - 1)
 		return;
@@ -2019,7 +2051,7 @@ tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
 {
 	if (!ctx->wrapped ||
 	    !tty_pane_full_width(tty, ctx) ||
-	    (tty->term->flags & TERM_EARLYWRAP) ||
+	    (tty->term->flags & TERM_NOXENL) ||
 	    ctx->xoff + cx != 0 ||
 	    ctx->yoff + cy != tty->cy + 1 ||
 	    tty->cx < tty->sx ||
@@ -2106,7 +2138,9 @@ tty_cursor(struct tty *tty, u_int cx, u_int cy)
 		if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
 			tty_putcode1(tty, TTYC_HPA, cx);
 			goto out;
-		} else if (change > 0 && tty_term_has(term, TTYC_CUB)) {
+		} else if (change > 0 &&
+		    tty_term_has(term, TTYC_CUB) &&
+		    !tty_use_margin(tty)) {
 			if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
 				tty_putcode(tty, TTYC_CUB1);
 				tty_putcode(tty, TTYC_CUB1);
@@ -2114,7 +2148,9 @@ tty_cursor(struct tty *tty, u_int cx, u_int cy)
 			}
 			tty_putcode1(tty, TTYC_CUB, change);
 			goto out;
-		} else if (change < 0 && tty_term_has(term, TTYC_CUF)) {
+		} else if (change < 0 &&
+		    tty_term_has(term, TTYC_CUF) &&
+		    !tty_use_margin(tty)) {
 			tty_putcode1(tty, TTYC_CUF, -change);
 			goto out;
 		}
@@ -2352,11 +2388,10 @@ tty_check_fg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
 	/* Is this a 24-bit colour? */
 	if (gc->fg & COLOUR_FLAG_RGB) {
 		/* Not a 24-bit terminal? Translate to 256-colour palette. */
-		if (!tty_term_has(tty->term, TTYC_SETRGBF)) {
-			colour_split_rgb(gc->fg, &r, &g, &b);
-			gc->fg = colour_find_rgb(r, g, b);
-		} else
+		if ((tty->term->flags|tty->term_flags) & TERM_RGBCOLOURS)
 			return;
+		colour_split_rgb(gc->fg, &r, &g, &b);
+		gc->fg = colour_find_rgb(r, g, b);
 	}
 
 	/* How many colours does this terminal have? */
@@ -2374,10 +2409,7 @@ tty_check_fg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
 				gc->fg &= 7;
 				if (colours >= 16)
 					gc->fg += 90;
-				else
-					gc->attr |= GRID_ATTR_BRIGHT;
-			} else
-				gc->attr &= ~GRID_ATTR_BRIGHT;
+			}
 		}
 		return;
 	}
@@ -2405,11 +2437,10 @@ tty_check_bg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
 	/* Is this a 24-bit colour? */
 	if (gc->bg & COLOUR_FLAG_RGB) {
 		/* Not a 24-bit terminal? Translate to 256-colour palette. */
-		if (!tty_term_has(tty->term, TTYC_SETRGBB)) {
-			colour_split_rgb(gc->bg, &r, &g, &b);
-			gc->bg = colour_find_rgb(r, g, b);
-		} else
+		if ((tty->term->flags|tty->term_flags) & TERM_RGBCOLOURS)
 			return;
+		colour_split_rgb(gc->bg, &r, &g, &b);
+		gc->bg = colour_find_rgb(r, g, b);
 	}
 
 	/* How many colours does this terminal have? */
@@ -2442,7 +2473,8 @@ tty_check_bg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
 }
 
 static void
-tty_check_us(__unused struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
+tty_check_us(__unused struct tty *tty, struct window_pane *wp,
+    struct grid_cell *gc)
 {
 	int	c;
 
@@ -2585,15 +2617,14 @@ tty_try_colour(struct tty *tty, int colour, const char *type)
 	}
 
 	if (colour & COLOUR_FLAG_RGB) {
+		colour_split_rgb(colour & 0xffffff, &r, &g, &b);
 		if (*type == '3') {
 			if (!tty_term_has(tty->term, TTYC_SETRGBF))
-				return (-1);
-			colour_split_rgb(colour & 0xffffff, &r, &g, &b);
+				goto fallback_rgb;
 			tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
 		} else {
 			if (!tty_term_has(tty->term, TTYC_SETRGBB))
-				return (-1);
-			colour_split_rgb(colour & 0xffffff, &r, &g, &b);
+				goto fallback_rgb;
 			tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
 		}
 		return (0);
@@ -2606,6 +2637,12 @@ fallback_256:
 	log_debug("%s: 256 colour fallback: %s", tty->client->name, s);
 	tty_puts(tty, s);
 	return (0);
+
+fallback_rgb:
+	xsnprintf(s, sizeof s, "\033[%s;2;%d;%d;%dm", type, r, g, b);
+	log_debug("%s: RGB colour fallback: %s", tty->client->name, s);
+	tty_puts(tty, s);
+	return (0);
 }
 
 static void

utf8.c

@@ -415,7 +415,7 @@ utf8_cstrwidth(const char *s)
 	return (width);
 }
 
-/* Pad UTF-8 string to width. Caller frees. */
+/* Pad UTF-8 string to width on the left. Caller frees. */
 char *
 utf8_padcstr(const char *s, u_int width)
 {
@@ -436,6 +436,27 @@ utf8_padcstr(const char *s, u_int width)
 	return (out);
 }
 
+/* Pad UTF-8 string to width on the right. Caller frees. */
+char *
+utf8_rpadcstr(const char *s, u_int width)
+{
+	size_t	 slen;
+	char	*out;
+	u_int	  n, i;
+
+	n = utf8_cstrwidth(s);
+	if (n >= width)
+		return (xstrdup(s));
+
+	slen = strlen(s);
+	out = xmalloc(slen + 1 + (width - n));
+	for (i = 0; i < width - n; i++)
+		out[i] = ' ';
+	memcpy(out + i, s, slen);
+	out[i + slen] = '\0';
+	return (out);
+}
+
 int
 utf8_cstrhas(const char *s, const struct utf8_data *ud)
 {

window-buffer.c

@@ -74,6 +74,7 @@ static const char *window_buffer_sort_list[] = {
 	"name",
 	"size"
 };
+static struct mode_tree_sort_criteria *window_buffer_sort;
 
 struct window_buffer_itemdata {
 	const char	*name;
@@ -112,43 +113,29 @@ window_buffer_free_item(struct window_buffer_itemdata *item)
 }
 
 static int
-window_buffer_cmp_name(const void *a0, const void *b0)
+window_buffer_cmp(const void *a0, const void *b0)
 {
-	const struct window_buffer_itemdata *const *a = a0;
-	const struct window_buffer_itemdata *const *b = b0;
+	const struct window_buffer_itemdata *const	*a = a0;
+	const struct window_buffer_itemdata *const	*b = b0;
+	int						 result = 0;
 
-	return (strcmp((*a)->name, (*b)->name));
-}
+	if (window_buffer_sort->field == WINDOW_BUFFER_BY_TIME)
+		result = (*b)->order - (*a)->order;
+	else if (window_buffer_sort->field == WINDOW_BUFFER_BY_SIZE)
+		result = (*b)->size - (*a)->size;
 
-static int
-window_buffer_cmp_time(const void *a0, const void *b0)
-{
-	const struct window_buffer_itemdata *const *a = a0;
-	const struct window_buffer_itemdata *const *b = b0;
+	/* Use WINDOW_BUFFER_BY_NAME as default order and tie breaker. */
+	if (result == 0)
+		result = strcmp((*a)->name, (*b)->name);
 
-	if ((*a)->order > (*b)->order)
-		return (-1);
-	if ((*a)->order < (*b)->order)
-		return (1);
-	return (strcmp((*a)->name, (*b)->name));
-}
-
-static int
-window_buffer_cmp_size(const void *a0, const void *b0)
-{
-	const struct window_buffer_itemdata *const *a = a0;
-	const struct window_buffer_itemdata *const *b = b0;
-
-	if ((*a)->size > (*b)->size)
-		return (-1);
-	if ((*a)->size < (*b)->size)
-		return (1);
-	return (strcmp((*a)->name, (*b)->name));
+	if (window_buffer_sort->reversed)
+		result = -result;
+	return (result);
 }
 
 static void
-window_buffer_build(void *modedata, u_int sort_type, __unused uint64_t *tag,
-    const char *filter)
+window_buffer_build(void *modedata, struct mode_tree_sort_criteria *sort_crit,
+    __unused uint64_t *tag, const char *filter)
 {
 	struct window_buffer_modedata	*data = modedata;
 	struct window_buffer_itemdata	*item;
@@ -174,20 +161,9 @@ window_buffer_build(void *modedata, u_int sort_type, __unused uint64_t *tag,
 		item->order = paste_buffer_order(pb);
 	}
 
-	switch (sort_type) {
-	case WINDOW_BUFFER_BY_NAME:
-		qsort(data->item_list, data->item_size, sizeof *data->item_list,
-		    window_buffer_cmp_name);
-		break;
-	case WINDOW_BUFFER_BY_TIME:
-		qsort(data->item_list, data->item_size, sizeof *data->item_list,
-		    window_buffer_cmp_time);
-		break;
-	case WINDOW_BUFFER_BY_SIZE:
-		qsort(data->item_list, data->item_size, sizeof *data->item_list,
-		    window_buffer_cmp_size);
-		break;
-	}
+	window_buffer_sort = sort_crit;
+	qsort(data->item_list, data->item_size, sizeof *data->item_list,
+	    window_buffer_cmp);
 
 	if (cmd_find_valid_state(&data->fs)) {
 		s = data->fs.s;
@@ -231,9 +207,9 @@ window_buffer_draw(__unused void *modedata, void *itemdata,
 {
 	struct window_buffer_itemdata	*item = itemdata;
 	struct paste_buffer		*pb;
-	char				 line[1024];
-	const char			*pdata, *end, *cp;
-	size_t				 psize, at;
+	const char			*pdata, *start, *end;
+	char				*buf = NULL;
+	size_t				 psize, len;
 	u_int				 i, cx = ctx->s->cx, cy = ctx->s->cy;
 
 	pb = paste_get_name(item->name);
@@ -242,27 +218,22 @@ window_buffer_draw(__unused void *modedata, void *itemdata,
 
 	pdata = end = paste_buffer_data(pb, &psize);
 	for (i = 0; i < sy; i++) {
-		at = 0;
-		while (end != pdata + psize && *end != '\n') {
-			if ((sizeof line) - at > 5) {
-				cp = vis(line + at, *end, VIS_OCTAL|VIS_TAB, 0);
-				at = cp - line;
-			}
+		start = end;
+		while (end != pdata + psize && *end != '\n')
 			end++;
-		}
-		if (at > sx)
-			at = sx;
-		line[at] = '\0';
-
-		if (*line != '\0') {
+		buf = xreallocarray(buf, 4, end - start + 1);
+		len = utf8_strvis(buf, start, end - start, VIS_OCTAL|VIS_TAB);
+		if (*buf != '\0') {
 			screen_write_cursormove(ctx, cx, cy + i, 0);
-			screen_write_puts(ctx, &grid_default_cell, "%s", line);
+			screen_write_nputs(ctx, sx, &grid_default_cell, "%s",
+			    buf);
 		}
 
 		if (end == pdata + psize)
 			break;
 		end++;
 	}
+	free(buf);
 }
 
 static int
@@ -357,7 +328,7 @@ window_buffer_resize(struct window_mode_entry *wme, u_int sx, u_int sy)
 }
 
 static void
-window_buffer_do_delete(void* modedata, void *itemdata,
+window_buffer_do_delete(void *modedata, void *itemdata,
     __unused struct client *c, __unused key_code key)
 {
 	struct window_buffer_modedata	*data = modedata;
@@ -371,7 +342,7 @@ window_buffer_do_delete(void* modedata, void *itemdata,
 }
 
 static void
-window_buffer_do_paste(void* modedata, void *itemdata, struct client *c,
+window_buffer_do_paste(void *modedata, void *itemdata, struct client *c,
     __unused key_code key)
 {
 	struct window_buffer_modedata	*data = modedata;

window-client.c

@@ -75,6 +75,7 @@ static const char *window_client_sort_list[] = {
 	"creation",
 	"activity"
 };
+static struct mode_tree_sort_criteria *window_client_sort;
 
 struct window_client_itemdata {
 	struct client	*c;
@@ -110,60 +111,48 @@ window_client_free_item(struct window_client_itemdata *item)
 }
 
 static int
-window_client_cmp_name(const void *a0, const void *b0)
+window_client_cmp(const void *a0, const void *b0)
 {
-	const struct window_client_itemdata *const *a = a0;
-	const struct window_client_itemdata *const *b = b0;
+	const struct window_client_itemdata *const	*a = a0;
+	const struct window_client_itemdata *const	*b = b0;
+	const struct window_client_itemdata		*itema = *a;
+	const struct window_client_itemdata		*itemb = *b;
+	struct client					*ca = itema->c;
+	struct client					*cb = itemb->c;
+	int						 result = 0;
 
-	return (strcmp((*a)->c->name, (*b)->c->name));
-}
+	switch (window_client_sort->field) {
+	case WINDOW_CLIENT_BY_SIZE:
+		result = ca->tty.sx - cb->tty.sx;
+		if (result == 0)
+			result = ca->tty.sy - cb->tty.sy;
+		break;
+	case WINDOW_CLIENT_BY_CREATION_TIME:
+		if (timercmp(&ca->creation_time, &cb->creation_time, >))
+			result = -1;
+		else if (timercmp(&ca->creation_time, &cb->creation_time, <))
+			result = 1;
+		break;
+	case WINDOW_CLIENT_BY_ACTIVITY_TIME:
+		if (timercmp(&ca->activity_time, &cb->activity_time, >))
+			result = -1;
+		else if (timercmp(&ca->activity_time, &cb->activity_time, <))
+			result = 1;
+		break;
+	}
 
-static int
-window_client_cmp_size(const void *a0, const void *b0)
-{
-	const struct window_client_itemdata *const *a = a0;
-	const struct window_client_itemdata *const *b = b0;
+	/* Use WINDOW_CLIENT_BY_NAME as default order and tie breaker. */
+	if (result == 0)
+		result = strcmp(ca->name, cb->name);
 
-	if ((*a)->c->tty.sx < (*b)->c->tty.sx)
-		return (-1);
-	if ((*a)->c->tty.sx > (*b)->c->tty.sx)
-		return (1);
-	if ((*a)->c->tty.sy < (*b)->c->tty.sy)
-		return (-1);
-	if ((*a)->c->tty.sy > (*b)->c->tty.sy)
-		return (1);
-	return (strcmp((*a)->c->name, (*b)->c->name));
-}
-
-static int
-window_client_cmp_creation_time(const void *a0, const void *b0)
-{
-	const struct window_client_itemdata *const *a = a0;
-	const struct window_client_itemdata *const *b = b0;
-
-	if (timercmp(&(*a)->c->creation_time, &(*b)->c->creation_time, >))
-		return (-1);
-	if (timercmp(&(*a)->c->creation_time, &(*b)->c->creation_time, <))
-		return (1);
-	return (strcmp((*a)->c->name, (*b)->c->name));
-}
-
-static int
-window_client_cmp_activity_time(const void *a0, const void *b0)
-{
-	const struct window_client_itemdata *const *a = a0;
-	const struct window_client_itemdata *const *b = b0;
-
-	if (timercmp(&(*a)->c->activity_time, &(*b)->c->activity_time, >))
-		return (-1);
-	if (timercmp(&(*a)->c->activity_time, &(*b)->c->activity_time, <))
-		return (1);
-	return (strcmp((*a)->c->name, (*b)->c->name));
+	if (window_client_sort->reversed)
+		result = -result;
+	return (result);
 }
 
 static void
-window_client_build(void *modedata, u_int sort_type, __unused uint64_t *tag,
-    const char *filter)
+window_client_build(void *modedata, struct mode_tree_sort_criteria *sort_crit,
+    __unused uint64_t *tag, const char *filter)
 {
 	struct window_client_modedata	*data = modedata;
 	struct window_client_itemdata	*item;
@@ -187,24 +176,9 @@ window_client_build(void *modedata, u_int sort_type, __unused uint64_t *tag,
 		c->references++;
 	}
 
-	switch (sort_type) {
-	case WINDOW_CLIENT_BY_NAME:
-		qsort(data->item_list, data->item_size, sizeof *data->item_list,
-		    window_client_cmp_name);
-		break;
-	case WINDOW_CLIENT_BY_SIZE:
-		qsort(data->item_list, data->item_size, sizeof *data->item_list,
-		    window_client_cmp_size);
-		break;
-	case WINDOW_CLIENT_BY_CREATION_TIME:
-		qsort(data->item_list, data->item_size, sizeof *data->item_list,
-		    window_client_cmp_creation_time);
-		break;
-	case WINDOW_CLIENT_BY_ACTIVITY_TIME:
-		qsort(data->item_list, data->item_size, sizeof *data->item_list,
-		    window_client_cmp_activity_time);
-		break;
-	}
+	window_client_sort = sort_crit;
+	qsort(data->item_list, data->item_size, sizeof *data->item_list,
+	    window_client_cmp);
 
 	for (i = 0; i < data->item_size; i++) {
 		item = data->item_list[i];
@@ -236,7 +210,7 @@ window_client_draw(__unused void *modedata, void *itemdata,
 	struct window_pane		*wp;
 	u_int				 cx = s->cx, cy = s->cy, lines, at;
 
-	if (c->session == NULL || (c->flags & (CLIENT_DEAD|CLIENT_DETACHING)))
+	if (c->session == NULL || (c->flags & CLIENT_UNATTACHEDFLAGS))
 		return;
 	wp = c->session->curw->window->active;
 
@@ -339,7 +313,7 @@ window_client_resize(struct window_mode_entry *wme, u_int sx, u_int sy)
 }
 
 static void
-window_client_do_detach(void* modedata, void *itemdata,
+window_client_do_detach(void *modedata, void *itemdata,
     __unused struct client *c, key_code key)
 {
 	struct window_client_modedata	*data = modedata;

window-tree.c

@@ -33,7 +33,7 @@ static void		 window_tree_key(struct window_mode_entry *,
 			     struct client *, struct session *,
 			     struct winlink *, key_code, struct mouse_event *);
 
-#define WINDOW_TREE_DEFAULT_COMMAND "switch-client -t '%%'"
+#define WINDOW_TREE_DEFAULT_COMMAND "switch-client -Zt '%%'"
 
 #define WINDOW_TREE_DEFAULT_FORMAT \
 	"#{?pane_format," \
@@ -89,6 +89,7 @@ static const char *window_tree_sort_list[] = {
 	"name",
 	"time"
 };
+static struct mode_tree_sort_criteria *window_tree_sort;
 
 enum window_tree_type {
 	WINDOW_TREE_NONE,
@@ -184,62 +185,92 @@ window_tree_free_item(struct window_tree_itemdata *item)
 }
 
 static int
-window_tree_cmp_session_name(const void *a0, const void *b0)
+window_tree_cmp_session(const void *a0, const void *b0)
 {
-	const struct session *const *a = a0;
-	const struct session *const *b = b0;
+	const struct session *const	*a = a0;
+	const struct session *const	*b = b0;
+	const struct session		*sa = *a;
+	const struct session		*sb = *b;
+	int				 result = 0;
 
-	return (strcmp((*a)->name, (*b)->name));
+	switch (window_tree_sort->field) {
+	case WINDOW_TREE_BY_INDEX:
+		result = sa->id - sb->id;
+		break;
+	case WINDOW_TREE_BY_TIME:
+		if (timercmp(&sa->activity_time, &sb->activity_time, >)) {
+			result = -1;
+			break;
+		}
+		if (timercmp(&sa->activity_time, &sb->activity_time, <)) {
+			result = 1;
+			break;
+		}
+		/* FALLTHROUGH */
+	case WINDOW_TREE_BY_NAME:
+		result = strcmp(sa->name, sb->name);
+		break;
+	}
+
+	if (window_tree_sort->reversed)
+		result = -result;
+	return (result);
 }
 
 static int
-window_tree_cmp_session_time(const void *a0, const void *b0)
+window_tree_cmp_window(const void *a0, const void *b0)
 {
-	const struct session *const *a = a0;
-	const struct session *const *b = b0;
+	const struct winlink *const	*a = a0;
+	const struct winlink *const	*b = b0;
+	const struct winlink		*wla = *a;
+	const struct winlink		*wlb = *b;
+	struct window			*wa = wla->window;
+	struct window			*wb = wlb->window;
+	int				 result = 0;
 
-	if (timercmp(&(*a)->activity_time, &(*b)->activity_time, >))
-		return (-1);
-	if (timercmp(&(*a)->activity_time, &(*b)->activity_time, <))
-		return (1);
-	return (strcmp((*a)->name, (*b)->name));
+	switch (window_tree_sort->field) {
+	case WINDOW_TREE_BY_INDEX:
+		result = wla->idx - wlb->idx;
+		break;
+	case WINDOW_TREE_BY_TIME:
+		if (timercmp(&wa->activity_time, &wb->activity_time, >)) {
+			result = -1;
+			break;
+		}
+		if (timercmp(&wa->activity_time, &wb->activity_time, <)) {
+			result = 1;
+			break;
+		}
+		/* FALLTHROUGH */
+	case WINDOW_TREE_BY_NAME:
+		result = strcmp(wa->name, wb->name);
+		break;
+	}
+
+	if (window_tree_sort->reversed)
+		result = -result;
+	return (result);
 }
 
 static int
-window_tree_cmp_window_name(const void *a0, const void *b0)
+window_tree_cmp_pane(const void *a0, const void *b0)
 {
-	const struct winlink *const *a = a0;
-	const struct winlink *const *b = b0;
+	const struct window_pane *const	*a = a0;
+	const struct window_pane *const	*b = b0;
+	int				 result;
 
-	return (strcmp((*a)->window->name, (*b)->window->name));
-}
-
-static int
-window_tree_cmp_window_time(const void *a0, const void *b0)
-{
-	const struct winlink *const *a = a0;
-	const struct winlink *const *b = b0;
-
-	if (timercmp(&(*a)->window->activity_time,
-	    &(*b)->window->activity_time, >))
-		return (-1);
-	if (timercmp(&(*a)->window->activity_time,
-	    &(*b)->window->activity_time, <))
-		return (1);
-	return (strcmp((*a)->window->name, (*b)->window->name));
-}
-
-static int
-window_tree_cmp_pane_time(const void *a0, const void *b0)
-{
-	const struct window_pane *const *a = a0;
-	const struct window_pane *const *b = b0;
-
-	if ((*a)->active_point < (*b)->active_point)
-		return (-1);
-	if ((*a)->active_point > (*b)->active_point)
-		return (1);
-	return (0);
+	if (window_tree_sort->field == WINDOW_TREE_BY_TIME)
+		result = (*a)->active_point - (*b)->active_point;
+	else {
+		/*
+		 * Panes don't have names, so use number order for any other
+		 * sort field.
+		 */
+		result = (*a)->id - (*b)->id;
+	}
+	if (window_tree_sort->reversed)
+		result = -result;
+	return (result);
 }
 
 static void
@@ -285,8 +316,9 @@ window_tree_filter_pane(struct session *s, struct winlink *wl,
 }
 
 static int
-window_tree_build_window(struct session *s, struct winlink *wl, void* modedata,
-    u_int sort_type, struct mode_tree_item *parent, const char *filter)
+window_tree_build_window(struct session *s, struct winlink *wl,
+    void *modedata, struct mode_tree_sort_criteria *sort_crit,
+    struct mode_tree_item *parent, const char *filter)
 {
 	struct window_tree_modedata	*data = modedata;
 	struct window_tree_itemdata	*item;
@@ -335,16 +367,8 @@ window_tree_build_window(struct session *s, struct winlink *wl, void* modedata,
 	if (n == 0)
 		goto empty;
 
-	switch (sort_type) {
-	case WINDOW_TREE_BY_INDEX:
-		break;
-	case WINDOW_TREE_BY_NAME:
-		/* Panes don't have names, so leave in number order. */
-		break;
-	case WINDOW_TREE_BY_TIME:
-		qsort(l, n, sizeof *l, window_tree_cmp_pane_time);
-		break;
-	}
+	window_tree_sort = sort_crit;
+	qsort(l, n, sizeof *l, window_tree_cmp_pane);
 
 	for (i = 0; i < n; i++)
 		window_tree_build_pane(s, wl, l[i], modedata, mti);
@@ -359,8 +383,8 @@ empty:
 }
 
 static void
-window_tree_build_session(struct session *s, void* modedata,
-    u_int sort_type, const char *filter)
+window_tree_build_session(struct session *s, void *modedata,
+    struct mode_tree_sort_criteria *sort_crit, const char *filter)
 {
 	struct window_tree_modedata	*data = modedata;
 	struct window_tree_itemdata	*item;
@@ -392,20 +416,12 @@ window_tree_build_session(struct session *s, void* modedata,
 		l = xreallocarray(l, n + 1, sizeof *l);
 		l[n++] = wl;
 	}
-	switch (sort_type) {
-	case WINDOW_TREE_BY_INDEX:
-		break;
-	case WINDOW_TREE_BY_NAME:
-		qsort(l, n, sizeof *l, window_tree_cmp_window_name);
-		break;
-	case WINDOW_TREE_BY_TIME:
-		qsort(l, n, sizeof *l, window_tree_cmp_window_time);
-		break;
-	}
+	window_tree_sort = sort_crit;
+	qsort(l, n, sizeof *l, window_tree_cmp_window);
 
 	empty = 0;
 	for (i = 0; i < n; i++) {
-		if (!window_tree_build_window(s, l[i], modedata, sort_type, mti,
+		if (!window_tree_build_window(s, l[i], modedata, sort_crit, mti,
 		    filter))
 			empty++;
 	}
@@ -418,8 +434,8 @@ window_tree_build_session(struct session *s, void* modedata,
 }
 
 static void
-window_tree_build(void *modedata, u_int sort_type, uint64_t *tag,
-    const char *filter)
+window_tree_build(void *modedata, struct mode_tree_sort_criteria *sort_crit,
+    uint64_t *tag, const char *filter)
 {
 	struct window_tree_modedata	*data = modedata;
 	struct session			*s, **l;
@@ -446,19 +462,11 @@ window_tree_build(void *modedata, u_int sort_type, uint64_t *tag,
 		l = xreallocarray(l, n + 1, sizeof *l);
 		l[n++] = s;
 	}
-	switch (sort_type) {
-	case WINDOW_TREE_BY_INDEX:
-		break;
-	case WINDOW_TREE_BY_NAME:
-		qsort(l, n, sizeof *l, window_tree_cmp_session_name);
-		break;
-	case WINDOW_TREE_BY_TIME:
-		qsort(l, n, sizeof *l, window_tree_cmp_session_time);
-		break;
-	}
+	window_tree_sort = sort_crit;
+	qsort(l, n, sizeof *l, window_tree_cmp_session);
 
 	for (i = 0; i < n; i++)
-		window_tree_build_session(l[i], modedata, sort_type, filter);
+		window_tree_build_session(l[i], modedata, sort_crit, filter);
 	free(l);
 
 	switch (data->type) {
@@ -965,7 +973,7 @@ window_tree_get_target(struct window_tree_itemdata *item,
 }
 
 static void
-window_tree_command_each(void* modedata, void* itemdata, struct client *c,
+window_tree_command_each(void *modedata, void *itemdata, struct client *c,
     __unused key_code key)
 {
 	struct window_tree_modedata	*data = modedata;
@@ -1022,7 +1030,7 @@ window_tree_command_free(void *modedata)
 }
 
 static void
-window_tree_kill_each(__unused void* modedata, void* itemdata,
+window_tree_kill_each(__unused void *modedata, void *itemdata,
     __unused struct client *c, __unused key_code key)
 {
 	struct window_tree_itemdata	*item = itemdata;

window.c

@@ -306,12 +306,17 @@ window_update_activity(struct window *w)
 }
 
 struct window *
-window_create(u_int sx, u_int sy)
+window_create(u_int sx, u_int sy, u_int xpixel, u_int ypixel)
 {
 	struct window	*w;
 
+	if (xpixel == 0)
+		xpixel = DEFAULT_XPIXEL;
+	if (ypixel == 0)
+		ypixel = DEFAULT_YPIXEL;
+
 	w = xcalloc(1, sizeof *w);
-	w->name = NULL;
+	w->name = xstrdup("");
 	w->flags = 0;
 
 	TAILQ_INIT(&w->panes);
@@ -322,6 +327,8 @@ window_create(u_int sx, u_int sy)
 
 	w->sx = sx;
 	w->sy = sy;
+	w->xpixel = xpixel;
+	w->ypixel = ypixel;
 
 	w->options = options_create(global_w_options);
 
@@ -408,11 +415,49 @@ window_set_name(struct window *w, const char *new_name)
 }
 
 void
-window_resize(struct window *w, u_int sx, u_int sy)
+window_resize(struct window *w, u_int sx, u_int sy, int xpixel, int ypixel)
 {
-	log_debug("%s: @%u resize %ux%u", __func__, w->id, sx, sy);
+	if (xpixel == 0)
+		xpixel = DEFAULT_XPIXEL;
+	if (ypixel == 0)
+		ypixel = DEFAULT_YPIXEL;
+
+	log_debug("%s: @%u resize %ux%u (%ux%u)", __func__, w->id, sx, sy,
+	    xpixel == -1 ? w->xpixel : xpixel,
+	    ypixel == -1 ? w->ypixel : ypixel);
 	w->sx = sx;
 	w->sy = sy;
+	if (xpixel != -1)
+		w->xpixel = xpixel;
+	if (ypixel != -1)
+		w->ypixel = ypixel;
+}
+
+void
+window_pane_send_resize(struct window_pane *wp, int yadjust)
+{
+	struct window	*w = wp->window;
+	struct winsize	 ws;
+
+	if (wp->fd == -1)
+		return;
+
+	memset(&ws, 0, sizeof ws);
+	ws.ws_col = wp->sx;
+	ws.ws_row = wp->sy + yadjust;
+	ws.ws_xpixel = w->xpixel * ws.ws_col;
+	ws.ws_ypixel = w->ypixel * ws.ws_row;
+	if (ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
+#ifdef __sun
+		/*
+		 * Some versions of Solaris apparently can return an error when
+		 * resizing; don't know why this happens, can't reproduce on
+		 * other platforms and ignoring it doesn't seem to cause any
+		 * issues.
+		 */
+		if (errno != EINVAL && errno != ENXIO)
+#endif
+		fatal("ioctl failed");
 }
 
 int
@@ -585,6 +630,28 @@ window_unzoom(struct window *w)
 	return (0);
 }
 
+int
+window_push_zoom(struct window *w, int flag)
+{
+	log_debug("%s: @%u %d", __func__, w->id,
+	    flag && (w->flags & WINDOW_ZOOMED));
+	if (flag && (w->flags & WINDOW_ZOOMED))
+		w->flags |= WINDOW_WASZOOMED;
+	else
+		w->flags &= ~WINDOW_WASZOOMED;
+	return (window_unzoom(w) == 0);
+}
+
+int
+window_pop_zoom(struct window *w)
+{
+	log_debug("%s: @%u %d", __func__, w->id,
+	    !!(w->flags & WINDOW_WASZOOMED));
+	if (w->flags & WINDOW_WASZOOMED)
+		return (window_zoom(w->active) == 0);
+	return (0);
+}
+
 struct window_pane *
 window_add_pane(struct window *w, struct window_pane *other, u_int hlimit,
     int flags)
@@ -932,7 +999,7 @@ window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
 	if (wme != NULL && wme->mode->resize != NULL)
 		wme->mode->resize(wme, sx, sy);
 
-	wp->flags |= PANE_RESIZE;
+	wp->flags |= (PANE_RESIZE|PANE_RESIZED);
 }
 
 /*
@@ -1172,7 +1239,7 @@ window_pane_reset_mode_all(struct window_pane *wp)
 		window_pane_reset_mode(wp);
 }
 
-void
+int
 window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
     struct winlink *wl, key_code key, struct mouse_event *m)
 {
@@ -1180,23 +1247,24 @@ window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
 	struct window_pane		*wp2;
 
 	if (KEYC_IS_MOUSE(key) && m == NULL)
-		return;
+		return (-1);
 
 	wme = TAILQ_FIRST(&wp->modes);
 	if (wme != NULL) {
 		wp->modelast = time(NULL);
 		if (wme->mode->key != NULL)
 			wme->mode->key(wme, c, s, wl, (key & ~KEYC_XTERM), m);
-		return;
+		return (0);
 	}
 
 	if (wp->fd == -1 || wp->flags & PANE_INPUTOFF)
-		return;
+		return (0);
 
-	input_key(wp, key, m);
+	if (input_key(wp, key, m) != 0)
+		return (-1);
 
 	if (KEYC_IS_MOUSE(key))
-		return;
+		return (0);
 	if (options_get_number(wp->window->options, "synchronize-panes")) {
 		TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
 			if (wp2 != wp &&
@@ -1207,6 +1275,7 @@ window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
 				input_key(wp2, key, NULL);
 		}
 	}
+	return (0);
 }
 
 int
@@ -1541,31 +1610,28 @@ winlink_shuffle_up(struct session *s, struct winlink *wl)
 }
 
 static void
-window_pane_input_callback(struct client *c, int closed, void *data)
+window_pane_input_callback(struct client *c, __unused const char *path,
+    int error, int closed, struct evbuffer *buffer, void *data)
 {
 	struct window_pane_input_data	*cdata = data;
 	struct window_pane		*wp;
-	struct evbuffer			*evb = c->stdin_data;
-	u_char				*buf = EVBUFFER_DATA(evb);
-	size_t				 len = EVBUFFER_LENGTH(evb);
+	u_char				*buf = EVBUFFER_DATA(buffer);
+	size_t				 len = EVBUFFER_LENGTH(buffer);
 
 	wp = window_pane_find_by_id(cdata->wp);
-	if (wp == NULL || closed || c->flags & CLIENT_DEAD) {
+	if (wp == NULL || closed || error != 0 || c->flags & CLIENT_DEAD) {
 		if (wp == NULL)
 			c->flags |= CLIENT_EXIT;
-		evbuffer_drain(evb, len);
-
-		c->stdin_callback = NULL;
-		server_client_unref(c);
 
+		evbuffer_drain(buffer, len);
 		cmdq_continue(cdata->item);
-		free(cdata);
 
+		server_client_unref(c);
+		free(cdata);
 		return;
 	}
-
 	input_parse_buffer(wp, buf, len);
-	evbuffer_drain(evb, len);
+	evbuffer_drain(buffer, len);
 }
 
 int
@@ -1584,6 +1650,8 @@ window_pane_start_input(struct window_pane *wp, struct cmdq_item *item,
 	cdata->item = item;
 	cdata->wp = wp->id;
 
-	return (server_set_stdin_callback(c, window_pane_input_callback, cdata,
-	    cause));
+	c->references++;
+	file_read(c, "-", window_pane_input_callback, cdata);
+
+	return (0);
 }

xmalloc.c

@@ -71,6 +71,20 @@ xreallocarray(void *ptr, size_t nmemb, size_t size)
 	return new_ptr;
 }
 
+void *
+xrecallocarray(void *ptr, size_t oldnmemb, size_t nmemb, size_t size)
+{
+	void *new_ptr;
+
+	if (nmemb == 0 || size == 0)
+		fatalx("xrecallocarray: zero size");
+	new_ptr = recallocarray(ptr, oldnmemb, nmemb, size);
+	if (new_ptr == NULL)
+		fatalx("xrecallocarray: allocating %zu * %zu bytes: %s",
+		    nmemb, size, strerror(errno));
+	return new_ptr;
+}
+
 char *
 xstrdup(const char *str)
 {

xmalloc.h

@@ -27,6 +27,7 @@ void	*xmalloc(size_t);
 void	*xcalloc(size_t, size_t);
 void	*xrealloc(void *, size_t);
 void	*xreallocarray(void *, size_t, size_t);
+void	*xrecallocarray(void *, size_t, size_t, size_t);
 char	*xstrdup(const char *);
 char	*xstrndup(const char *, size_t);
 int	 xasprintf(char **, const char *, ...)