Adding upstream version 3.3a.upstream/3.3a

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2004 insertions, 0 deletions

diff --git a/status.c b/status.c
new file mode 100644
index 0000000..929276d
--- /dev/null
+++ b/status.c
@@ -0,0 +1,2004 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "tmux.h"
+
+static void	 status_message_callback(int, short, void *);
+static void	 status_timer_callback(int, short, void *);
+
+static char	*status_prompt_find_history_file(void);
+static const char *status_prompt_up_history(u_int *, u_int);
+static const char *status_prompt_down_history(u_int *, u_int);
+static void	 status_prompt_add_history(const char *, u_int);
+
+static char	*status_prompt_complete(struct client *, const char *, u_int);
+static char	*status_prompt_complete_window_menu(struct client *,
+		     struct session *, const char *, u_int, char);
+
+struct status_prompt_menu {
+	struct client	 *c;
+	u_int		  start;
+	u_int		  size;
+	char		**list;
+	char		  flag;
+};
+
+static const char	*prompt_type_strings[] = {
+	"command",
+	"search",
+	"target",
+	"window-target"
+};
+
+/* Status prompt history. */
+char		**status_prompt_hlist[PROMPT_NTYPES];
+u_int		  status_prompt_hsize[PROMPT_NTYPES];
+
+/* Find the history file to load/save from/to. */
+static char *
+status_prompt_find_history_file(void)
+{
+	const char	*home, *history_file;
+	char		*path;
+
+	history_file = options_get_string(global_options, "history-file");
+	if (*history_file == '\0')
+		return (NULL);
+	if (*history_file == '/')
+		return (xstrdup(history_file));
+
+	if (history_file[0] != '~' || history_file[1] != '/')
+		return (NULL);
+	if ((home = find_home()) == NULL)
+		return (NULL);
+	xasprintf(&path, "%s%s", home, history_file + 1);
+	return (path);
+}
+
+/* Add loaded history item to the appropriate list. */
+static void
+status_prompt_add_typed_history(char *line)
+{
+	char			*typestr;
+	enum prompt_type	 type = PROMPT_TYPE_INVALID;
+
+	typestr = strsep(&line, ":");
+	if (line != NULL)
+		type = status_prompt_type(typestr);
+	if (type == PROMPT_TYPE_INVALID) {
+		/*
+		 * Invalid types are not expected, but this provides backward
+		 * compatibility with old history files.
+		 */
+		if (line != NULL)
+			*(--line) = ':';
+		status_prompt_add_history(typestr, PROMPT_TYPE_COMMAND);
+	} else
+		status_prompt_add_history(line, type);
+}
+
+/* Load status prompt history from file. */
+void
+status_prompt_load_history(void)
+{
+	FILE	*f;
+	char	*history_file, *line, *tmp;
+	size_t	 length;
+
+	if ((history_file = status_prompt_find_history_file()) == NULL)
+		return;
+	log_debug("loading history from %s", history_file);
+
+	f = fopen(history_file, "r");
+	if (f == NULL) {
+		log_debug("%s: %s", history_file, strerror(errno));
+		free(history_file);
+		return;
+	}
+	free(history_file);
+
+	for (;;) {
+		if ((line = fgetln(f, &length)) == NULL)
+			break;
+
+		if (length > 0) {
+			if (line[length - 1] == '\n') {
+				line[length - 1] = '\0';
+				status_prompt_add_typed_history(line);
+			} else {
+				tmp = xmalloc(length + 1);
+				memcpy(tmp, line, length);
+				tmp[length] = '\0';
+				status_prompt_add_typed_history(tmp);
+				free(tmp);
+			}
+		}
+	}
+	fclose(f);
+}
+
+/* Save status prompt history to file. */
+void
+status_prompt_save_history(void)
+{
+	FILE	*f;
+	u_int	 i, type;
+	char	*history_file;
+
+	if ((history_file = status_prompt_find_history_file()) == NULL)
+		return;
+	log_debug("saving history to %s", history_file);
+
+	f = fopen(history_file, "w");
+	if (f == NULL) {
+		log_debug("%s: %s", history_file, strerror(errno));
+		free(history_file);
+		return;
+	}
+	free(history_file);
+
+	for (type = 0; type < PROMPT_NTYPES; type++) {
+		for (i = 0; i < status_prompt_hsize[type]; i++) {
+			fputs(prompt_type_strings[type], f);
+			fputc(':', f);
+			fputs(status_prompt_hlist[type][i], f);
+			fputc('\n', f);
+		}
+	}
+	fclose(f);
+
+}
+
+/* Status timer callback. */
+static void
+status_timer_callback(__unused int fd, __unused short events, void *arg)
+{
+	struct client	*c = arg;
+	struct session	*s = c->session;
+	struct timeval	 tv;
+
+	evtimer_del(&c->status.timer);
+
+	if (s == NULL)
+		return;
+
+	if (c->message_string == NULL && c->prompt_string == NULL)
+		c->flags |= CLIENT_REDRAWSTATUS;
+
+	timerclear(&tv);
+	tv.tv_sec = options_get_number(s->options, "status-interval");
+
+	if (tv.tv_sec != 0)
+		evtimer_add(&c->status.timer, &tv);
+	log_debug("client %p, status interval %d", c, (int)tv.tv_sec);
+}
+
+/* Start status timer for client. */
+void
+status_timer_start(struct client *c)
+{
+	struct session	*s = c->session;
+
+	if (event_initialized(&c->status.timer))
+		evtimer_del(&c->status.timer);
+	else
+		evtimer_set(&c->status.timer, status_timer_callback, c);
+
+	if (s != NULL && options_get_number(s->options, "status"))
+		status_timer_callback(-1, 0, c);
+}
+
+/* Start status timer for all clients. */
+void
+status_timer_start_all(void)
+{
+	struct client	*c;
+
+	TAILQ_FOREACH(c, &clients, entry)
+		status_timer_start(c);
+}
+
+/* Update status cache. */
+void
+status_update_cache(struct session *s)
+{
+	s->statuslines = options_get_number(s->options, "status");
+	if (s->statuslines == 0)
+		s->statusat = -1;
+	else if (options_get_number(s->options, "status-position") == 0)
+		s->statusat = 0;
+	else
+		s->statusat = 1;
+}
+
+/* Get screen line of status line. -1 means off. */
+int
+status_at_line(struct client *c)
+{
+	struct session	*s = c->session;
+
+	if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL))
+		return (-1);
+	if (s->statusat != 1)
+		return (s->statusat);
+	return (c->tty.sy - status_line_size(c));
+}
+
+/* Get size of status line for client's session. 0 means off. */
+u_int
+status_line_size(struct client *c)
+{
+	struct session	*s = c->session;
+
+	if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL))
+		return (0);
+	if (s == NULL)
+		return (options_get_number(global_s_options, "status"));
+	return (s->statuslines);
+}
+
+/* Get window at window list position. */
+struct style_range *
+status_get_range(struct client *c, u_int x, u_int y)
+{
+	struct status_line	*sl = &c->status;
+	struct style_range	*sr;
+
+	if (y >= nitems(sl->entries))
+		return (NULL);
+	TAILQ_FOREACH(sr, &sl->entries[y].ranges, entry) {
+		if (x >= sr->start && x < sr->end)
+			return (sr);
+	}
+	return (NULL);
+}
+
+/* Free all ranges. */
+static void
+status_free_ranges(struct style_ranges *srs)
+{
+	struct style_range	*sr, *sr1;
+
+	TAILQ_FOREACH_SAFE(sr, srs, entry, sr1) {
+		TAILQ_REMOVE(srs, sr, entry);
+		free(sr);
+	}
+}
+
+/* Save old status line. */
+static void
+status_push_screen(struct client *c)
+{
+	struct status_line *sl = &c->status;
+
+	if (sl->active == &sl->screen) {
+		sl->active = xmalloc(sizeof *sl->active);
+		screen_init(sl->active, c->tty.sx, status_line_size(c), 0);
+	}
+	sl->references++;
+}
+
+/* Restore old status line. */
+static void
+status_pop_screen(struct client *c)
+{
+	struct status_line *sl = &c->status;
+
+	if (--sl->references == 0) {
+		screen_free(sl->active);
+		free(sl->active);
+		sl->active = &sl->screen;
+	}
+}
+
+/* Initialize status line. */
+void
+status_init(struct client *c)
+{
+	struct status_line	*sl = &c->status;
+	u_int			 i;
+
+	for (i = 0; i < nitems(sl->entries); i++)
+		TAILQ_INIT(&sl->entries[i].ranges);
+
+	screen_init(&sl->screen, c->tty.sx, 1, 0);
+	sl->active = &sl->screen;
+}
+
+/* Free status line. */
+void
+status_free(struct client *c)
+{
+	struct status_line	*sl = &c->status;
+	u_int			 i;
+
+	for (i = 0; i < nitems(sl->entries); i++) {
+		status_free_ranges(&sl->entries[i].ranges);
+		free((void *)sl->entries[i].expanded);
+	}
+
+	if (event_initialized(&sl->timer))
+		evtimer_del(&sl->timer);
+
+	if (sl->active != &sl->screen) {
+		screen_free(sl->active);
+		free(sl->active);
+	}
+	screen_free(&sl->screen);
+}
+
+/* Draw status line for client. */
+int
+status_redraw(struct client *c)
+{
+	struct status_line		*sl = &c->status;
+	struct status_line_entry	*sle;
+	struct session			*s = c->session;
+	struct screen_write_ctx		 ctx;
+	struct grid_cell		 gc;
+	u_int				 lines, i, n, width = c->tty.sx;
+	int				 flags, force = 0, changed = 0, fg, bg;
+	struct options_entry		*o;
+	union options_value		*ov;
+	struct format_tree		*ft;
+	char				*expanded;
+
+	log_debug("%s enter", __func__);
+
+	/* Shouldn't get here if not the active screen. */
+	if (sl->active != &sl->screen)
+		fatalx("not the active screen");
+
+	/* No status line? */
+	lines = status_line_size(c);
+	if (c->tty.sy == 0 || lines == 0)
+		return (1);
+
+	/* Create format tree. */
+	flags = FORMAT_STATUS;
+	if (c->flags & CLIENT_STATUSFORCE)
+		flags |= FORMAT_FORCE;
+	ft = format_create(c, NULL, FORMAT_NONE, flags);
+	format_defaults(ft, c, NULL, NULL, NULL);
+
+	/* Set up default colour. */
+	style_apply(&gc, s->options, "status-style", ft);
+	fg = options_get_number(s->options, "status-fg");
+	if (!COLOUR_DEFAULT(fg))
+		gc.fg = fg;
+	bg = options_get_number(s->options, "status-bg");
+	if (!COLOUR_DEFAULT(bg))
+		gc.bg = bg;
+	if (!grid_cells_equal(&gc, &sl->style)) {
+		force = 1;
+		memcpy(&sl->style, &gc, sizeof sl->style);
+	}
+
+	/* Resize the target screen. */
+	if (screen_size_x(&sl->screen) != width ||
+	    screen_size_y(&sl->screen) != lines) {
+		screen_resize(&sl->screen, width, lines, 0);
+		changed = force = 1;
+	}
+	screen_write_start(&ctx, &sl->screen);
+
+	/* Write the status lines. */
+	o = options_get(s->options, "status-format");
+	if (o == NULL) {
+		for (n = 0; n < width * lines; n++)
+			screen_write_putc(&ctx, &gc, ' ');
+	} else {
+		for (i = 0; i < lines; i++) {
+			screen_write_cursormove(&ctx, 0, i, 0);
+
+			ov = options_array_get(o, i);
+			if (ov == NULL) {
+				for (n = 0; n < width; n++)
+					screen_write_putc(&ctx, &gc, ' ');
+				continue;
+			}
+			sle = &sl->entries[i];
+
+			expanded = format_expand_time(ft, ov->string);
+			if (!force &&
+			    sle->expanded != NULL &&
+			    strcmp(expanded, sle->expanded) == 0) {
+				free(expanded);
+				continue;
+			}
+			changed = 1;
+
+			for (n = 0; n < width; n++)
+				screen_write_putc(&ctx, &gc, ' ');
+			screen_write_cursormove(&ctx, 0, i, 0);
+
+			status_free_ranges(&sle->ranges);
+			format_draw(&ctx, &gc, width, expanded, &sle->ranges,
+			    0);
+
+			free(sle->expanded);
+			sle->expanded = expanded;
+		}
+	}
+	screen_write_stop(&ctx);
+
+	/* Free the format tree. */
+	format_free(ft);
+
+	/* Return if the status line has changed. */
+	log_debug("%s exit: force=%d, changed=%d", __func__, force, changed);
+	return (force || changed);
+}
+
+/* Set a status line message. */
+void
+status_message_set(struct client *c, int delay, int ignore_styles,
+    int ignore_keys, const char *fmt, ...)
+{
+	struct timeval	tv;
+	va_list		ap;
+
+	status_message_clear(c);
+	status_push_screen(c);
+
+	va_start(ap, fmt);
+	xvasprintf(&c->message_string, fmt, ap);
+	va_end(ap);
+
+	server_add_message("%s message: %s", c->name, c->message_string);
+
+	/*
+	 * With delay -1, the display-time option is used; zero means wait for
+	 * key press; more than zero is the actual delay time in milliseconds.
+	 */
+	if (delay == -1)
+		delay = options_get_number(c->session->options, "display-time");
+	if (delay > 0) {
+		tv.tv_sec = delay / 1000;
+		tv.tv_usec = (delay % 1000) * 1000L;
+
+		if (event_initialized(&c->message_timer))
+			evtimer_del(&c->message_timer);
+		evtimer_set(&c->message_timer, status_message_callback, c);
+
+		evtimer_add(&c->message_timer, &tv);
+	}
+
+	if (delay != 0)
+		c->message_ignore_keys = ignore_keys;
+	c->message_ignore_styles = ignore_styles;
+
+	c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
+	c->flags |= CLIENT_REDRAWSTATUS;
+}
+
+/* Clear status line message. */
+void
+status_message_clear(struct client *c)
+{
+	if (c->message_string == NULL)
+		return;
+
+	free(c->message_string);
+	c->message_string = NULL;
+
+	if (c->prompt_string == NULL)
+		c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
+	c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */
+
+	status_pop_screen(c);
+}
+
+/* Clear status line message after timer expires. */
+static void
+status_message_callback(__unused int fd, __unused short event, void *data)
+{
+	struct client	*c = data;
+
+	status_message_clear(c);
+}
+
+/* Draw client message on status line of present else on last line. */
+int
+status_message_redraw(struct client *c)
+{
+	struct status_line	*sl = &c->status;
+	struct screen_write_ctx	 ctx;
+	struct session		*s = c->session;
+	struct screen		 old_screen;
+	size_t			 len;
+	u_int			 lines, offset;
+	struct grid_cell	 gc;
+	struct format_tree	*ft;
+
+	if (c->tty.sx == 0 || c->tty.sy == 0)
+		return (0);
+	memcpy(&old_screen, sl->active, sizeof old_screen);
+
+	lines = status_line_size(c);
+	if (lines <= 1)
+		lines = 1;
+	screen_init(sl->active, c->tty.sx, lines, 0);
+
+	len = screen_write_strlen("%s", c->message_string);
+	if (len > c->tty.sx)
+		len = c->tty.sx;
+
+	ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
+	style_apply(&gc, s->options, "message-style", ft);
+	format_free(ft);
+
+	screen_write_start(&ctx, sl->active);
+	screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines - 1);
+	screen_write_cursormove(&ctx, 0, lines - 1, 0);
+	for (offset = 0; offset < c->tty.sx; offset++)
+		screen_write_putc(&ctx, &gc, ' ');
+	screen_write_cursormove(&ctx, 0, lines - 1, 0);
+	if (c->message_ignore_styles)
+		screen_write_nputs(&ctx, len, &gc, "%s", c->message_string);
+	else
+		format_draw(&ctx, &gc, c->tty.sx, c->message_string, NULL, 0);
+	screen_write_stop(&ctx);
+
+	if (grid_compare(sl->active->grid, old_screen.grid) == 0) {
+		screen_free(&old_screen);
+		return (0);
+	}
+	screen_free(&old_screen);
+	return (1);
+}
+
+/* Enable status line prompt. */
+void
+status_prompt_set(struct client *c, struct cmd_find_state *fs,
+    const char *msg, const char *input, prompt_input_cb inputcb,
+    prompt_free_cb freecb, void *data, int flags, enum prompt_type prompt_type)
+{
+	struct format_tree	*ft;
+	char			*tmp;
+
+	if (fs != NULL)
+		ft = format_create_from_state(NULL, c, fs);
+	else
+		ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
+
+	if (input == NULL)
+		input = "";
+	if (flags & PROMPT_NOFORMAT)
+		tmp = xstrdup(input);
+	else
+		tmp = format_expand_time(ft, input);
+
+	status_message_clear(c);
+	status_prompt_clear(c);
+	status_push_screen(c);
+
+	c->prompt_string = format_expand_time(ft, msg);
+
+	if (flags & PROMPT_INCREMENTAL) {
+		c->prompt_last = xstrdup(tmp);
+		c->prompt_buffer = utf8_fromcstr("");
+	} else {
+		c->prompt_last = NULL;
+		c->prompt_buffer = utf8_fromcstr(tmp);
+	}
+	c->prompt_index = utf8_strlen(c->prompt_buffer);
+
+	c->prompt_inputcb = inputcb;
+	c->prompt_freecb = freecb;
+	c->prompt_data = data;
+
+	memset(c->prompt_hindex, 0, sizeof c->prompt_hindex);
+
+	c->prompt_flags = flags;
+	c->prompt_type = prompt_type;
+	c->prompt_mode = PROMPT_ENTRY;
+
+	if (~flags & PROMPT_INCREMENTAL)
+		c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
+	c->flags |= CLIENT_REDRAWSTATUS;
+
+	if (flags & PROMPT_INCREMENTAL)
+		c->prompt_inputcb(c, c->prompt_data, "=", 0);
+
+	free(tmp);
+	format_free(ft);
+}
+
+/* Remove status line prompt. */
+void
+status_prompt_clear(struct client *c)
+{
+	if (c->prompt_string == NULL)
+		return;
+
+	if (c->prompt_freecb != NULL && c->prompt_data != NULL)
+		c->prompt_freecb(c->prompt_data);
+
+	free(c->prompt_last);
+	c->prompt_last = NULL;
+
+	free(c->prompt_string);
+	c->prompt_string = NULL;
+
+	free(c->prompt_buffer);
+	c->prompt_buffer = NULL;
+
+	free(c->prompt_saved);
+	c->prompt_saved = NULL;
+
+	c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
+	c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */
+
+	status_pop_screen(c);
+}
+
+/* Update status line prompt with a new prompt string. */
+void
+status_prompt_update(struct client *c, const char *msg, const char *input)
+{
+	struct format_tree	*ft;
+	char			*tmp;
+
+	ft = format_create(c, NULL, FORMAT_NONE, 0);
+	format_defaults(ft, c, NULL, NULL, NULL);
+
+	tmp = format_expand_time(ft, input);
+
+	free(c->prompt_string);
+	c->prompt_string = format_expand_time(ft, msg);
+
+	free(c->prompt_buffer);
+	c->prompt_buffer = utf8_fromcstr(tmp);
+	c->prompt_index = utf8_strlen(c->prompt_buffer);
+
+	memset(c->prompt_hindex, 0, sizeof c->prompt_hindex);
+
+	c->flags |= CLIENT_REDRAWSTATUS;
+
+	free(tmp);
+	format_free(ft);
+}
+
+/* Draw client prompt on status line of present else on last line. */
+int
+status_prompt_redraw(struct client *c)
+{
+	struct status_line	*sl = &c->status;
+	struct screen_write_ctx	 ctx;
+	struct session		*s = c->session;
+	struct screen		 old_screen;
+	u_int			 i, lines, offset, left, start, width;
+	u_int			 pcursor, pwidth;
+	struct grid_cell	 gc, cursorgc;
+	struct format_tree	*ft;
+
+	if (c->tty.sx == 0 || c->tty.sy == 0)
+		return (0);
+	memcpy(&old_screen, sl->active, sizeof old_screen);
+
+	lines = status_line_size(c);
+	if (lines <= 1)
+		lines = 1;
+	screen_init(sl->active, c->tty.sx, lines, 0);
+
+	ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
+	if (c->prompt_mode == PROMPT_COMMAND)
+		style_apply(&gc, s->options, "message-command-style", ft);
+	else
+		style_apply(&gc, s->options, "message-style", ft);
+	format_free(ft);
+
+	memcpy(&cursorgc, &gc, sizeof cursorgc);
+	cursorgc.attr ^= GRID_ATTR_REVERSE;
+
+	start = format_width(c->prompt_string);
+	if (start > c->tty.sx)
+		start = c->tty.sx;
+
+	screen_write_start(&ctx, sl->active);
+	screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines - 1);
+	screen_write_cursormove(&ctx, 0, lines - 1, 0);
+	for (offset = 0; offset < c->tty.sx; offset++)
+		screen_write_putc(&ctx, &gc, ' ');
+	screen_write_cursormove(&ctx, 0, lines - 1, 0);
+	format_draw(&ctx, &gc, start, c->prompt_string, NULL, 0);
+	screen_write_cursormove(&ctx, start, lines - 1, 0);
+
+	left = c->tty.sx - start;
+	if (left == 0)
+		goto finished;
+
+	pcursor = utf8_strwidth(c->prompt_buffer, c->prompt_index);
+	pwidth = utf8_strwidth(c->prompt_buffer, -1);
+	if (pcursor >= left) {
+		/*
+		 * The cursor would be outside the screen so start drawing
+		 * with it on the right.
+		 */
+		offset = (pcursor - left) + 1;
+		pwidth = left;
+	} else
+		offset = 0;
+	if (pwidth > left)
+		pwidth = left;
+	c->prompt_cursor = start + c->prompt_index - offset;
+
+	width = 0;
+	for (i = 0; c->prompt_buffer[i].size != 0; i++) {
+		if (width < offset) {
+			width += c->prompt_buffer[i].width;
+			continue;
+		}
+		if (width >= offset + pwidth)
+			break;
+		width += c->prompt_buffer[i].width;
+		if (width > offset + pwidth)
+			break;
+
+		if (i != c->prompt_index) {
+			utf8_copy(&gc.data, &c->prompt_buffer[i]);
+			screen_write_cell(&ctx, &gc);
+		} else {
+			utf8_copy(&cursorgc.data, &c->prompt_buffer[i]);
+			screen_write_cell(&ctx, &cursorgc);
+		}
+	}
+	if (sl->active->cx < screen_size_x(sl->active) && c->prompt_index >= i)
+		screen_write_putc(&ctx, &cursorgc, ' ');
+
+finished:
+	screen_write_stop(&ctx);
+
+	if (grid_compare(sl->active->grid, old_screen.grid) == 0) {
+		screen_free(&old_screen);
+		return (0);
+	}
+	screen_free(&old_screen);
+	return (1);
+}
+
+/* Is this a separator? */
+static int
+status_prompt_in_list(const char *ws, const struct utf8_data *ud)
+{
+	if (ud->size != 1 || ud->width != 1)
+		return (0);
+	return (strchr(ws, *ud->data) != NULL);
+}
+
+/* Is this a space? */
+static int
+status_prompt_space(const struct utf8_data *ud)
+{
+	if (ud->size != 1 || ud->width != 1)
+		return (0);
+	return (*ud->data == ' ');
+}
+
+/*
+ * Translate key from vi to emacs. Return 0 to drop key, 1 to process the key
+ * as an emacs key; return 2 to append to the buffer.
+ */
+static int
+status_prompt_translate_key(struct client *c, key_code key, key_code *new_key)
+{
+	if (c->prompt_mode == PROMPT_ENTRY) {
+		switch (key) {
+		case '\001': /* C-a */
+		case '\003': /* C-c */
+		case '\005': /* C-e */
+		case '\007': /* C-g */
+		case '\010': /* C-h */
+		case '\011': /* Tab */
+		case '\013': /* C-k */
+		case '\016': /* C-n */
+		case '\020': /* C-p */
+		case '\024': /* C-t */
+		case '\025': /* C-u */
+		case '\027': /* C-w */
+		case '\031': /* C-y */
+		case '\n':
+		case '\r':
+		case KEYC_LEFT|KEYC_CTRL:
+		case KEYC_RIGHT|KEYC_CTRL:
+		case KEYC_BSPACE:
+		case KEYC_DC:
+		case KEYC_DOWN:
+		case KEYC_END:
+		case KEYC_HOME:
+		case KEYC_LEFT:
+		case KEYC_RIGHT:
+		case KEYC_UP:
+			*new_key = key;
+			return (1);
+		case '\033': /* Escape */
+			c->prompt_mode = PROMPT_COMMAND;
+			c->flags |= CLIENT_REDRAWSTATUS;
+			return (0);
+		}
+		*new_key = key;
+		return (2);
+	}
+
+	switch (key) {
+	case KEYC_BSPACE:
+		*new_key = KEYC_LEFT;
+		return (1);
+	case 'A':
+	case 'I':
+	case 'C':
+	case 's':
+	case 'a':
+		c->prompt_mode = PROMPT_ENTRY;
+		c->flags |= CLIENT_REDRAWSTATUS;
+		break; /* switch mode and... */
+	case 'S':
+		c->prompt_mode = PROMPT_ENTRY;
+		c->flags |= CLIENT_REDRAWSTATUS;
+		*new_key = '\025'; /* C-u */
+		return (1);
+	case 'i':
+	case '\033': /* Escape */
+		c->prompt_mode = PROMPT_ENTRY;
+		c->flags |= CLIENT_REDRAWSTATUS;
+		return (0);
+	}
+
+	switch (key) {
+	case 'A':
+	case '$':
+		*new_key = KEYC_END;
+		return (1);
+	case 'I':
+	case '0':
+	case '^':
+		*new_key = KEYC_HOME;
+		return (1);
+	case 'C':
+	case 'D':
+		*new_key = '\013'; /* C-k */
+		return (1);
+	case KEYC_BSPACE:
+	case 'X':
+		*new_key = KEYC_BSPACE;
+		return (1);
+	case 'b':
+		*new_key = 'b'|KEYC_META;
+		return (1);
+	case 'B':
+		*new_key = 'B'|KEYC_VI;
+		return (1);
+	case 'd':
+		*new_key = '\025'; /* C-u */
+		return (1);
+	case 'e':
+		*new_key = 'e'|KEYC_VI;
+		return (1);
+	case 'E':
+		*new_key = 'E'|KEYC_VI;
+		return (1);
+	case 'w':
+		*new_key = 'w'|KEYC_VI;
+		return (1);
+	case 'W':
+		*new_key = 'W'|KEYC_VI;
+		return (1);
+	case 'p':
+		*new_key = '\031'; /* C-y */
+		return (1);
+	case 'q':
+		*new_key = '\003'; /* C-c */
+		return (1);
+	case 's':
+	case KEYC_DC:
+	case 'x':
+		*new_key = KEYC_DC;
+		return (1);
+	case KEYC_DOWN:
+	case 'j':
+		*new_key = KEYC_DOWN;
+		return (1);
+	case KEYC_LEFT:
+	case 'h':
+		*new_key = KEYC_LEFT;
+		return (1);
+	case 'a':
+	case KEYC_RIGHT:
+	case 'l':
+		*new_key = KEYC_RIGHT;
+		return (1);
+	case KEYC_UP:
+	case 'k':
+		*new_key = KEYC_UP;
+		return (1);
+	case '\010' /* C-h */:
+	case '\003' /* C-c */:
+	case '\n':
+	case '\r':
+		return (1);
+	}
+	return (0);
+}
+
+/* Paste into prompt. */
+static int
+status_prompt_paste(struct client *c)
+{
+	struct paste_buffer	*pb;
+	const char		*bufdata;
+	size_t			 size, n, bufsize;
+	u_int			 i;
+	struct utf8_data	*ud, *udp;
+	enum utf8_state		 more;
+
+	size = utf8_strlen(c->prompt_buffer);
+	if (c->prompt_saved != NULL) {
+		ud = c->prompt_saved;
+		n = utf8_strlen(c->prompt_saved);
+	} else {
+		if ((pb = paste_get_top(NULL)) == NULL)
+			return (0);
+		bufdata = paste_buffer_data(pb, &bufsize);
+		ud = xreallocarray(NULL, bufsize + 1, sizeof *ud);
+		udp = ud;
+		for (i = 0; i != bufsize; /* nothing */) {
+			more = utf8_open(udp, bufdata[i]);
+			if (more == UTF8_MORE) {
+				while (++i != bufsize && more == UTF8_MORE)
+					more = utf8_append(udp, bufdata[i]);
+				if (more == UTF8_DONE) {
+					udp++;
+					continue;
+				}
+				i -= udp->have;
+			}
+			if (bufdata[i] <= 31 || bufdata[i] >= 127)
+				break;
+			utf8_set(udp, bufdata[i]);
+			udp++;
+			i++;
+		}
+		udp->size = 0;
+		n = udp - ud;
+	}
+	if (n == 0)
+		return (0);
+
+	c->prompt_buffer = xreallocarray(c->prompt_buffer, size + n + 1,
+	    sizeof *c->prompt_buffer);
+	if (c->prompt_index == size) {
+		memcpy(c->prompt_buffer + c->prompt_index, ud,
+		    n * sizeof *c->prompt_buffer);
+		c->prompt_index += n;
+		c->prompt_buffer[c->prompt_index].size = 0;
+	} else {
+		memmove(c->prompt_buffer + c->prompt_index + n,
+		    c->prompt_buffer + c->prompt_index,
+		    (size + 1 - c->prompt_index) * sizeof *c->prompt_buffer);
+		memcpy(c->prompt_buffer + c->prompt_index, ud,
+		    n * sizeof *c->prompt_buffer);
+		c->prompt_index += n;
+	}
+
+	if (ud != c->prompt_saved)
+		free(ud);
+	return (1);
+}
+
+/* Finish completion. */
+static int
+status_prompt_replace_complete(struct client *c, const char *s)
+{
+	char			 word[64], *allocated = NULL;
+	size_t			 size, n, off, idx, used;
+	struct utf8_data	*first, *last, *ud;
+
+	/* Work out where the cursor currently is. */
+	idx = c->prompt_index;
+	if (idx != 0)
+		idx--;
+	size = utf8_strlen(c->prompt_buffer);
+
+	/* Find the word we are in. */
+	first = &c->prompt_buffer[idx];
+	while (first > c->prompt_buffer && !status_prompt_space(first))
+		first--;
+	while (first->size != 0 && status_prompt_space(first))
+		first++;
+	last = &c->prompt_buffer[idx];
+	while (last->size != 0 && !status_prompt_space(last))
+		last++;
+	while (last > c->prompt_buffer && status_prompt_space(last))
+		last--;
+	if (last->size != 0)
+		last++;
+	if (last < first)
+		return (0);
+	if (s == NULL) {
+		used = 0;
+		for (ud = first; ud < last; ud++) {
+			if (used + ud->size >= sizeof word)
+				break;
+			memcpy(word + used, ud->data, ud->size);
+			used += ud->size;
+		}
+		if (ud != last)
+			return (0);
+		word[used] = '\0';
+	}
+
+	/* Try to complete it. */
+	if (s == NULL) {
+		allocated = status_prompt_complete(c, word,
+		    first - c->prompt_buffer);
+		if (allocated == NULL)
+			return (0);
+		s = allocated;
+	}
+
+	/* Trim out word. */
+	n = size - (last - c->prompt_buffer) + 1; /* with \0 */
+	memmove(first, last, n * sizeof *c->prompt_buffer);
+	size -= last - first;
+
+	/* Insert the new word. */
+	size += strlen(s);
+	off = first - c->prompt_buffer;
+	c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 1,
+	    sizeof *c->prompt_buffer);
+	first = c->prompt_buffer + off;
+	memmove(first + strlen(s), first, n * sizeof *c->prompt_buffer);
+	for (idx = 0; idx < strlen(s); idx++)
+		utf8_set(&first[idx], s[idx]);
+	c->prompt_index = (first - c->prompt_buffer) + strlen(s);
+
+	free(allocated);
+	return (1);
+}
+
+/* Prompt forward to the next beginning of a word. */
+static void
+status_prompt_forward_word(struct client *c, size_t size, int vi,
+    const char *separators)
+{
+	size_t		 idx = c->prompt_index;
+	int		 word_is_separators;
+
+	/* In emacs mode, skip until the first non-whitespace character. */
+	if (!vi)
+		while (idx != size &&
+		    status_prompt_space(&c->prompt_buffer[idx]))
+			idx++;
+
+	/* Can't move forward if we're already at the end. */
+	if (idx == size) {
+		c->prompt_index = idx;
+		return;
+	}
+
+	/* Determine the current character class (separators or not). */
+	word_is_separators = status_prompt_in_list(separators,
+	    &c->prompt_buffer[idx]) &&
+	    !status_prompt_space(&c->prompt_buffer[idx]);
+
+	/* Skip ahead until the first space or opposite character class. */
+	do {
+		idx++;
+		if (status_prompt_space(&c->prompt_buffer[idx])) {
+			/* In vi mode, go to the start of the next word. */
+			if (vi)
+				while (idx != size &&
+				    status_prompt_space(&c->prompt_buffer[idx]))
+					idx++;
+			break;
+		}
+	} while (idx != size && word_is_separators == status_prompt_in_list(
+	    separators, &c->prompt_buffer[idx]));
+
+	c->prompt_index = idx;
+}
+
+/* Prompt forward to the next end of a word. */
+static void
+status_prompt_end_word(struct client *c, size_t size, const char *separators)
+{
+	size_t		 idx = c->prompt_index;
+	int		 word_is_separators;
+
+	/* Can't move forward if we're already at the end. */
+	if (idx == size)
+		return;
+
+	/* Find the next word. */
+	do {
+		idx++;
+		if (idx == size) {
+			c->prompt_index = idx;
+			return;
+		}
+	} while (status_prompt_space(&c->prompt_buffer[idx]));
+
+	/* Determine the character class (separators or not). */
+	word_is_separators = status_prompt_in_list(separators,
+	    &c->prompt_buffer[idx]);
+
+	/* Skip ahead until the next space or opposite character class. */
+	do {
+		idx++;
+		if (idx == size)
+			break;
+	} while (!status_prompt_space(&c->prompt_buffer[idx]) &&
+	    word_is_separators == status_prompt_in_list(separators,
+	    &c->prompt_buffer[idx]));
+
+	/* Back up to the previous character to stop at the end of the word. */
+	c->prompt_index = idx - 1;
+}
+
+/* Prompt backward to the previous beginning of a word. */
+static void
+status_prompt_backward_word(struct client *c, const char *separators)
+{
+	size_t	idx = c->prompt_index;
+	int	word_is_separators;
+
+	/* Find non-whitespace. */
+	while (idx != 0) {
+		--idx;
+		if (!status_prompt_space(&c->prompt_buffer[idx]))
+			break;
+	}
+	word_is_separators = status_prompt_in_list(separators,
+	    &c->prompt_buffer[idx]);
+
+	/* Find the character before the beginning of the word. */
+	while (idx != 0) {
+		--idx;
+		if (status_prompt_space(&c->prompt_buffer[idx]) ||
+		    word_is_separators != status_prompt_in_list(separators,
+		    &c->prompt_buffer[idx])) {
+			/* Go back to the word. */
+			idx++;
+			break;
+		}
+	}
+	c->prompt_index = idx;
+}
+
+/* Handle keys in prompt. */
+int
+status_prompt_key(struct client *c, key_code key)
+{
+	struct options		*oo = c->session->options;
+	char			*s, *cp, prefix = '=';
+	const char		*histstr, *separators = NULL, *keystring;
+	size_t			 size, idx;
+	struct utf8_data	 tmp;
+	int			 keys, word_is_separators;
+
+	if (c->prompt_flags & PROMPT_KEY) {
+		keystring = key_string_lookup_key(key, 0);
+		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) {
+		if (key >= '0' && key <= '9')
+			goto append_key;
+		s = utf8_tocstr(c->prompt_buffer);
+		c->prompt_inputcb(c, c->prompt_data, s, 1);
+		status_prompt_clear(c);
+		free(s);
+		return (1);
+	}
+	key &= ~KEYC_MASK_FLAGS;
+
+	keys = options_get_number(c->session->options, "status-keys");
+	if (keys == MODEKEY_VI) {
+		switch (status_prompt_translate_key(c, key, &key)) {
+		case 1:
+			goto process_key;
+		case 2:
+			goto append_key;
+		default:
+			return (0);
+		}
+	}
+
+process_key:
+	switch (key) {
+	case KEYC_LEFT:
+	case '\002': /* C-b */
+		if (c->prompt_index > 0) {
+			c->prompt_index--;
+			break;
+		}
+		break;
+	case KEYC_RIGHT:
+	case '\006': /* C-f */
+		if (c->prompt_index < size) {
+			c->prompt_index++;
+			break;
+		}
+		break;
+	case KEYC_HOME:
+	case '\001': /* C-a */
+		if (c->prompt_index != 0) {
+			c->prompt_index = 0;
+			break;
+		}
+		break;
+	case KEYC_END:
+	case '\005': /* C-e */
+		if (c->prompt_index != size) {
+			c->prompt_index = size;
+			break;
+		}
+		break;
+	case '\011': /* Tab */
+		if (status_prompt_replace_complete(c, NULL))
+			goto changed;
+		break;
+	case KEYC_BSPACE:
+	case '\010': /* C-h */
+		if (c->prompt_index != 0) {
+			if (c->prompt_index == size)
+				c->prompt_buffer[--c->prompt_index].size = 0;
+			else {
+				memmove(c->prompt_buffer + c->prompt_index - 1,
+				    c->prompt_buffer + c->prompt_index,
+				    (size + 1 - c->prompt_index) *
+				    sizeof *c->prompt_buffer);
+				c->prompt_index--;
+			}
+			goto changed;
+		}
+		break;
+	case KEYC_DC:
+	case '\004': /* C-d */
+		if (c->prompt_index != size) {
+			memmove(c->prompt_buffer + c->prompt_index,
+			    c->prompt_buffer + c->prompt_index + 1,
+			    (size + 1 - c->prompt_index) *
+			    sizeof *c->prompt_buffer);
+			goto changed;
+		}
+		break;
+	case '\025': /* C-u */
+		c->prompt_buffer[0].size = 0;
+		c->prompt_index = 0;
+		goto changed;
+	case '\013': /* C-k */
+		if (c->prompt_index < size) {
+			c->prompt_buffer[c->prompt_index].size = 0;
+			goto changed;
+		}
+		break;
+	case '\027': /* C-w */
+		separators = options_get_string(oo, "word-separators");
+		idx = c->prompt_index;
+
+		/* Find non-whitespace. */
+		while (idx != 0) {
+			idx--;
+			if (!status_prompt_space(&c->prompt_buffer[idx]))
+				break;
+		}
+		word_is_separators = status_prompt_in_list(separators,
+		    &c->prompt_buffer[idx]);
+
+		/* Find the character before the beginning of the word. */
+		while (idx != 0) {
+			idx--;
+			if (status_prompt_space(&c->prompt_buffer[idx]) ||
+			    word_is_separators != status_prompt_in_list(
+			    separators, &c->prompt_buffer[idx])) {
+				/* Go back to the word. */
+				idx++;
+				break;
+			}
+		}
+
+		free(c->prompt_saved);
+		c->prompt_saved = xcalloc(sizeof *c->prompt_buffer,
+		    (c->prompt_index - idx) + 1);
+		memcpy(c->prompt_saved, c->prompt_buffer + idx,
+		    (c->prompt_index - idx) * sizeof *c->prompt_buffer);
+
+		memmove(c->prompt_buffer + idx,
+		    c->prompt_buffer + c->prompt_index,
+		    (size + 1 - c->prompt_index) *
+		    sizeof *c->prompt_buffer);
+		memset(c->prompt_buffer + size - (c->prompt_index - idx),
+		    '\0', (c->prompt_index - idx) * sizeof *c->prompt_buffer);
+		c->prompt_index = idx;
+
+		goto changed;
+	case KEYC_RIGHT|KEYC_CTRL:
+	case 'f'|KEYC_META:
+		separators = options_get_string(oo, "word-separators");
+		status_prompt_forward_word(c, size, 0, separators);
+		goto changed;
+	case 'E'|KEYC_VI:
+		status_prompt_end_word(c, size, "");
+		goto changed;
+	case 'e'|KEYC_VI:
+		separators = options_get_string(oo, "word-separators");
+		status_prompt_end_word(c, size, separators);
+		goto changed;
+	case 'W'|KEYC_VI:
+		status_prompt_forward_word(c, size, 1, "");
+		goto changed;
+	case 'w'|KEYC_VI:
+		separators = options_get_string(oo, "word-separators");
+		status_prompt_forward_word(c, size, 1, separators);
+		goto changed;
+	case 'B'|KEYC_VI:
+		status_prompt_backward_word(c, "");
+		goto changed;
+	case KEYC_LEFT|KEYC_CTRL:
+	case 'b'|KEYC_META:
+		separators = options_get_string(oo, "word-separators");
+		status_prompt_backward_word(c, separators);
+		goto changed;
+	case KEYC_UP:
+	case '\020': /* C-p */
+		histstr = status_prompt_up_history(c->prompt_hindex,
+		    c->prompt_type);
+		if (histstr == NULL)
+			break;
+		free(c->prompt_buffer);
+		c->prompt_buffer = utf8_fromcstr(histstr);
+		c->prompt_index = utf8_strlen(c->prompt_buffer);
+		goto changed;
+	case KEYC_DOWN:
+	case '\016': /* C-n */
+		histstr = status_prompt_down_history(c->prompt_hindex,
+		    c->prompt_type);
+		if (histstr == NULL)
+			break;
+		free(c->prompt_buffer);
+		c->prompt_buffer = utf8_fromcstr(histstr);
+		c->prompt_index = utf8_strlen(c->prompt_buffer);
+		goto changed;
+	case '\031': /* C-y */
+		if (status_prompt_paste(c))
+			goto changed;
+		break;
+	case '\024': /* C-t */
+		idx = c->prompt_index;
+		if (idx < size)
+			idx++;
+		if (idx >= 2) {
+			utf8_copy(&tmp, &c->prompt_buffer[idx - 2]);
+			utf8_copy(&c->prompt_buffer[idx - 2],
+			    &c->prompt_buffer[idx - 1]);
+			utf8_copy(&c->prompt_buffer[idx - 1], &tmp);
+			c->prompt_index = idx;
+			goto changed;
+		}
+		break;
+	case '\r':
+	case '\n':
+		s = utf8_tocstr(c->prompt_buffer);
+		if (*s != '\0')
+			status_prompt_add_history(s, c->prompt_type);
+		if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
+			status_prompt_clear(c);
+		free(s);
+		break;
+	case '\033': /* Escape */
+	case '\003': /* C-c */
+	case '\007': /* C-g */
+		if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0)
+			status_prompt_clear(c);
+		break;
+	case '\022': /* C-r */
+		if (~c->prompt_flags & PROMPT_INCREMENTAL)
+			break;
+		if (c->prompt_buffer[0].size == 0) {
+			prefix = '=';
+			free(c->prompt_buffer);
+			c->prompt_buffer = utf8_fromcstr(c->prompt_last);
+			c->prompt_index = utf8_strlen(c->prompt_buffer);
+		} else
+			prefix = '-';
+		goto changed;
+	case '\023': /* C-s */
+		if (~c->prompt_flags & PROMPT_INCREMENTAL)
+			break;
+		if (c->prompt_buffer[0].size == 0) {
+			prefix = '=';
+			free(c->prompt_buffer);
+			c->prompt_buffer = utf8_fromcstr(c->prompt_last);
+			c->prompt_index = utf8_strlen(c->prompt_buffer);
+		} else
+			prefix = '+';
+		goto changed;
+	default:
+		goto append_key;
+	}
+
+	c->flags |= CLIENT_REDRAWSTATUS;
+	return (0);
+
+append_key:
+	if (key <= 0x1f || (key >= KEYC_BASE && key < KEYC_BASE_END))
+		return (0);
+	if (key <= 0x7f)
+		utf8_set(&tmp, key);
+	else if (KEYC_IS_UNICODE(key))
+		utf8_to_data(key, &tmp);
+	else
+		return (0);
+
+	c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 2,
+	    sizeof *c->prompt_buffer);
+
+	if (c->prompt_index == size) {
+		utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
+		c->prompt_index++;
+		c->prompt_buffer[c->prompt_index].size = 0;
+	} else {
+		memmove(c->prompt_buffer + c->prompt_index + 1,
+		    c->prompt_buffer + c->prompt_index,
+		    (size + 1 - c->prompt_index) *
+		    sizeof *c->prompt_buffer);
+		utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
+		c->prompt_index++;
+	}
+
+	if (c->prompt_flags & PROMPT_SINGLE) {
+		if (utf8_strlen(c->prompt_buffer) != 1)
+			status_prompt_clear(c);
+		else {
+			s = utf8_tocstr(c->prompt_buffer);
+			if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
+				status_prompt_clear(c);
+			free(s);
+		}
+	}
+
+changed:
+	c->flags |= CLIENT_REDRAWSTATUS;
+	if (c->prompt_flags & PROMPT_INCREMENTAL) {
+		s = utf8_tocstr(c->prompt_buffer);
+		xasprintf(&cp, "%c%s", prefix, s);
+		c->prompt_inputcb(c, c->prompt_data, cp, 0);
+		free(cp);
+		free(s);
+	}
+	return (0);
+}
+
+/* Get previous line from the history. */
+static const char *
+status_prompt_up_history(u_int *idx, u_int type)
+{
+	/*
+	 * History runs from 0 to size - 1. Index is from 0 to size. Zero is
+	 * empty.
+	 */
+
+	if (status_prompt_hsize[type] == 0 ||
+	    idx[type] == status_prompt_hsize[type])
+		return (NULL);
+	idx[type]++;
+	return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]);
+}
+
+/* Get next line from the history. */
+static const char *
+status_prompt_down_history(u_int *idx, u_int type)
+{
+	if (status_prompt_hsize[type] == 0 || idx[type] == 0)
+		return ("");
+	idx[type]--;
+	if (idx[type] == 0)
+		return ("");
+	return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]);
+}
+
+/* Add line to the history. */
+static void
+status_prompt_add_history(const char *line, u_int type)
+{
+	u_int	i, oldsize, newsize, freecount, hlimit, new = 1;
+	size_t	movesize;
+
+	oldsize = status_prompt_hsize[type];
+	if (oldsize > 0 &&
+	    strcmp(status_prompt_hlist[type][oldsize - 1], line) == 0)
+		new = 0;
+
+	hlimit = options_get_number(global_options, "prompt-history-limit");
+	if (hlimit > oldsize) {
+		if (new == 0)
+			return;
+		newsize = oldsize + new;
+	} else {
+		newsize = hlimit;
+		freecount = oldsize + new - newsize;
+		if (freecount > oldsize)
+			freecount = oldsize;
+		if (freecount == 0)
+			return;
+		for (i = 0; i < freecount; i++)
+			free(status_prompt_hlist[type][i]);
+		movesize = (oldsize - freecount) *
+		    sizeof *status_prompt_hlist[type];
+		if (movesize > 0) {
+			memmove(&status_prompt_hlist[type][0],
+			    &status_prompt_hlist[type][freecount], movesize);
+		}
+	}
+
+	if (newsize == 0) {
+		free(status_prompt_hlist[type]);
+		status_prompt_hlist[type] = NULL;
+	} else if (newsize != oldsize) {
+		status_prompt_hlist[type] =
+		    xreallocarray(status_prompt_hlist[type], newsize,
+			sizeof *status_prompt_hlist[type]);
+	}
+
+	if (new == 1 && newsize > 0)
+		status_prompt_hlist[type][newsize - 1] = xstrdup(line);
+	status_prompt_hsize[type] = newsize;
+}
+
+/* Add to completion list. */
+static void
+status_prompt_add_list(char ***list, u_int *size, const char *s)
+{
+	u_int	i;
+
+	for (i = 0; i < *size; i++) {
+		if (strcmp((*list)[i], s) == 0)
+			return;
+	}
+	*list = xreallocarray(*list, (*size) + 1, sizeof **list);
+	(*list)[(*size)++] = xstrdup(s);
+}
+
+/* Build completion list. */
+static char **
+status_prompt_complete_list(u_int *size, const char *s, int at_start)
+{
+	char					**list = NULL, *tmp;
+	const char				**layout, *value, *cp;
+	const struct cmd_entry			**cmdent;
+	const struct options_table_entry	 *oe;
+	size_t					  slen = strlen(s), valuelen;
+	struct options_entry			 *o;
+	struct options_array_item		 *a;
+	const char				 *layouts[] = {
+		"even-horizontal", "even-vertical", "main-horizontal",
+		"main-vertical", "tiled", NULL
+	};
+
+	*size = 0;
+	for (cmdent = cmd_table; *cmdent != NULL; cmdent++) {
+		if (strncmp((*cmdent)->name, s, slen) == 0)
+			status_prompt_add_list(&list, size, (*cmdent)->name);
+		if ((*cmdent)->alias != NULL &&
+		    strncmp((*cmdent)->alias, s, slen) == 0)
+			status_prompt_add_list(&list, size, (*cmdent)->alias);
+	}
+	o = options_get_only(global_options, "command-alias");
+	if (o != NULL) {
+		a = options_array_first(o);
+		while (a != NULL) {
+			value = options_array_item_value(a)->string;
+			if ((cp = strchr(value, '=')) == NULL)
+				goto next;
+			valuelen = cp - value;
+			if (slen > valuelen || strncmp(value, s, slen) != 0)
+				goto next;
+
+			xasprintf(&tmp, "%.*s", (int)valuelen, value);
+			status_prompt_add_list(&list, size, tmp);
+			free(tmp);
+
+		next:
+			a = options_array_next(a);
+		}
+	}
+	if (at_start)
+		return (list);
+	for (oe = options_table; oe->name != NULL; oe++) {
+		if (strncmp(oe->name, s, slen) == 0)
+			status_prompt_add_list(&list, size, oe->name);
+	}
+	for (layout = layouts; *layout != NULL; layout++) {
+		if (strncmp(*layout, s, slen) == 0)
+			status_prompt_add_list(&list, size, *layout);
+	}
+	return (list);
+}
+
+/* Find longest prefix. */
+static char *
+status_prompt_complete_prefix(char **list, u_int size)
+{
+	char	 *out;
+	u_int	  i;
+	size_t	  j;
+
+	if (list == NULL || size == 0)
+		return (NULL);
+	out = xstrdup(list[0]);
+	for (i = 1; i < size; i++) {
+		j = strlen(list[i]);
+		if (j > strlen(out))
+			j = strlen(out);
+		for (; j > 0; j--) {
+			if (out[j - 1] != list[i][j - 1])
+				out[j - 1] = '\0';
+		}
+	}
+	return (out);
+}
+
+/* Complete word menu callback. */
+static void
+status_prompt_menu_callback(__unused struct menu *menu, u_int idx, key_code key,
+    void *data)
+{
+	struct status_prompt_menu	*spm = data;
+	struct client			*c = spm->c;
+	u_int				 i;
+	char				*s;
+
+	if (key != KEYC_NONE) {
+		idx += spm->start;
+		if (spm->flag == '\0')
+			s = xstrdup(spm->list[idx]);
+		else
+			xasprintf(&s, "-%c%s", spm->flag, spm->list[idx]);
+		if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
+			free(c->prompt_buffer);
+			c->prompt_buffer = utf8_fromcstr(s);
+			c->prompt_index = utf8_strlen(c->prompt_buffer);
+			c->flags |= CLIENT_REDRAWSTATUS;
+		} else if (status_prompt_replace_complete(c, s))
+			c->flags |= CLIENT_REDRAWSTATUS;
+		free(s);
+	}
+
+	for (i = 0; i < spm->size; i++)
+		free(spm->list[i]);
+	free(spm->list);
+}
+
+/* Show complete word menu. */
+static int
+status_prompt_complete_list_menu(struct client *c, char **list, u_int size,
+    u_int offset, char flag)
+{
+	struct menu			*menu;
+	struct menu_item		 item;
+	struct status_prompt_menu	*spm;
+	u_int				 lines = status_line_size(c), height, i;
+	u_int				 py;
+
+	if (size <= 1)
+		return (0);
+	if (c->tty.sy - lines < 3)
+		return (0);
+
+	spm = xmalloc(sizeof *spm);
+	spm->c = c;
+	spm->size = size;
+	spm->list = list;
+	spm->flag = flag;
+
+	height = c->tty.sy - lines - 2;
+	if (height > 10)
+		height = 10;
+	if (height > size)
+		height = size;
+	spm->start = size - height;
+
+	menu = menu_create("");
+	for (i = spm->start; i < size; i++) {
+		item.name = list[i];
+		item.key = '0' + (i - spm->start);
+		item.command = NULL;
+		menu_add_item(menu, &item, NULL, c, NULL);
+	}
+
+	if (options_get_number(c->session->options, "status-position") == 0)
+		py = lines;
+	else
+		py = c->tty.sy - 3 - height;
+	offset += utf8_cstrwidth(c->prompt_string);
+	if (offset > 2)
+		offset -= 2;
+	else
+		offset = 0;
+
+	if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, NULL, offset,
+	    py, c, NULL, status_prompt_menu_callback, spm) != 0) {
+		menu_free(menu);
+		free(spm);
+		return (0);
+	}
+	return (1);
+}
+
+/* Show complete word menu. */
+static char *
+status_prompt_complete_window_menu(struct client *c, struct session *s,
+    const char *word, u_int offset, char flag)
+{
+	struct menu			 *menu;
+	struct menu_item		  item;
+	struct status_prompt_menu	 *spm;
+	struct winlink			 *wl;
+	char				**list = NULL, *tmp;
+	u_int				  lines = status_line_size(c), height;
+	u_int				  py, size = 0;
+
+	if (c->tty.sy - lines < 3)
+		return (NULL);
+
+	spm = xmalloc(sizeof *spm);
+	spm->c = c;
+	spm->flag = flag;
+
+	height = c->tty.sy - lines - 2;
+	if (height > 10)
+		height = 10;
+	spm->start = 0;
+
+	menu = menu_create("");
+	RB_FOREACH(wl, winlinks, &s->windows) {
+		if (word != NULL && *word != '\0') {
+			xasprintf(&tmp, "%d", wl->idx);
+			if (strncmp(tmp, word, strlen(word)) != 0) {
+				free(tmp);
+				continue;
+			}
+			free(tmp);
+		}
+
+		list = xreallocarray(list, size + 1, sizeof *list);
+		if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
+			xasprintf(&tmp, "%d (%s)", wl->idx, wl->window->name);
+			xasprintf(&list[size++], "%d", wl->idx);
+		} else {
+			xasprintf(&tmp, "%s:%d (%s)", s->name, wl->idx,
+			    wl->window->name);
+			xasprintf(&list[size++], "%s:%d", s->name, wl->idx);
+		}
+		item.name = tmp;
+		item.key = '0' + size - 1;
+		item.command = NULL;
+		menu_add_item(menu, &item, NULL, c, NULL);
+		free(tmp);
+
+		if (size == height)
+			break;
+	}
+	if (size == 0) {
+		menu_free(menu);
+		return (NULL);
+	}
+	if (size == 1) {
+		menu_free(menu);
+		if (flag != '\0') {
+			xasprintf(&tmp, "-%c%s", flag, list[0]);
+			free(list[0]);
+		} else
+			tmp = list[0];
+		free(list);
+		return (tmp);
+	}
+	if (height > size)
+		height = size;
+
+	spm->size = size;
+	spm->list = list;
+
+	if (options_get_number(c->session->options, "status-position") == 0)
+		py = lines;
+	else
+		py = c->tty.sy - 3 - height;
+	offset += utf8_cstrwidth(c->prompt_string);
+	if (offset > 2)
+		offset -= 2;
+	else
+		offset = 0;
+
+	if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, NULL, offset,
+	    py, c, NULL, status_prompt_menu_callback, spm) != 0) {
+		menu_free(menu);
+		free(spm);
+		return (NULL);
+	}
+	return (NULL);
+}
+
+/* Sort complete list. */
+static int
+status_prompt_complete_sort(const void *a, const void *b)
+{
+	const char	**aa = (const char **)a, **bb = (const char **)b;
+
+	return (strcmp(*aa, *bb));
+}
+
+/* Complete a session. */
+static char *
+status_prompt_complete_session(char ***list, u_int *size, const char *s,
+    char flag)
+{
+	struct session	*loop;
+	char		*out, *tmp, n[11];
+
+	RB_FOREACH(loop, sessions, &sessions) {
+		if (*s == '\0' || strncmp(loop->name, s, strlen(s)) == 0) {
+			*list = xreallocarray(*list, (*size) + 2,
+			    sizeof **list);
+			xasprintf(&(*list)[(*size)++], "%s:", loop->name);
+		} else if (*s == '$') {
+			xsnprintf(n, sizeof n, "%u", loop->id);
+			if (s[1] == '\0' ||
+			    strncmp(n, s + 1, strlen(s) - 1) == 0) {
+				*list = xreallocarray(*list, (*size) + 2,
+				    sizeof **list);
+				xasprintf(&(*list)[(*size)++], "$%s:", n);
+			}
+		}
+	}
+	out = status_prompt_complete_prefix(*list, *size);
+	if (out != NULL && flag != '\0') {
+		xasprintf(&tmp, "-%c%s", flag, out);
+		free(out);
+		out = tmp;
+	}
+	return (out);
+}
+
+/* Complete word. */
+static char *
+status_prompt_complete(struct client *c, const char *word, u_int offset)
+{
+	struct session	 *session;
+	const char	 *s, *colon;
+	char		**list = NULL, *copy = NULL, *out = NULL;
+	char		  flag = '\0';
+	u_int		  size = 0, i;
+
+	if (*word == '\0' &&
+	    c->prompt_type != PROMPT_TYPE_TARGET &&
+	    c->prompt_type != PROMPT_TYPE_WINDOW_TARGET)
+		return (NULL);
+
+	if (c->prompt_type != PROMPT_TYPE_TARGET &&
+	    c->prompt_type != PROMPT_TYPE_WINDOW_TARGET &&
+	    strncmp(word, "-t", 2) != 0 &&
+	    strncmp(word, "-s", 2) != 0) {
+		list = status_prompt_complete_list(&size, word, offset == 0);
+		if (size == 0)
+			out = NULL;
+		else if (size == 1)
+			xasprintf(&out, "%s ", list[0]);
+		else
+			out = status_prompt_complete_prefix(list, size);
+		goto found;
+	}
+
+	if (c->prompt_type == PROMPT_TYPE_TARGET ||
+	    c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
+		s = word;
+		flag = '\0';
+	} else {
+		s = word + 2;
+		flag = word[1];
+		offset += 2;
+	}
+
+	/* If this is a window completion, open the window menu. */
+	if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
+		out = status_prompt_complete_window_menu(c, c->session, s,
+		    offset, '\0');
+		goto found;
+	}
+	colon = strchr(s, ':');
+
+	/* If there is no colon, complete as a session. */
+	if (colon == NULL) {
+		out = status_prompt_complete_session(&list, &size, s, flag);
+		goto found;
+	}
+
+	/* If there is a colon but no period, find session and show a menu. */
+	if (strchr(colon + 1, '.') == NULL) {
+		if (*s == ':')
+			session = c->session;
+		else {
+			copy = xstrdup(s);
+			*strchr(copy, ':') = '\0';
+			session = session_find(copy);
+			free(copy);
+			if (session == NULL)
+				goto found;
+		}
+		out = status_prompt_complete_window_menu(c, session, colon + 1,
+		    offset, flag);
+		if (out == NULL)
+			return (NULL);
+	}
+
+found:
+	if (size != 0) {
+		qsort(list, size, sizeof *list, status_prompt_complete_sort);
+		for (i = 0; i < size; i++)
+			log_debug("complete %u: %s", i, list[i]);
+	}
+
+	if (out != NULL && strcmp(word, out) == 0) {
+		free(out);
+		out = NULL;
+	}
+	if (out != NULL ||
+	    !status_prompt_complete_list_menu(c, list, size, offset, flag)) {
+		for (i = 0; i < size; i++)
+			free(list[i]);
+		free(list);
+	}
+	return (out);
+}
+
+/* Return the type of the prompt as an enum. */
+enum prompt_type
+status_prompt_type(const char *type)
+{
+	u_int	i;
+
+	for (i = 0; i < PROMPT_NTYPES; i++) {
+		if (strcmp(type, status_prompt_type_string(i)) == 0)
+			return (i);
+	}
+	return (PROMPT_TYPE_INVALID);
+}
+
+/* Accessor for prompt_type_strings. */
+const char *
+status_prompt_type_string(u_int type)
+{
+	if (type >= PROMPT_NTYPES)
+		return ("invalid");
+	return (prompt_type_strings[type]);
+}