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Revision 1.1012, Mon Apr 20 14:59:31 2020 UTC (4 years, 1 month ago) by nicm
Branch: MAIN
Changes since 1.1011: +1 -2 lines

Change how sync works to always send the end sequence after all output
is done when we are returning to the event loop (since we always move
the cursor at that point). Also a man fix from jmc.

/* $OpenBSD: tmux.h,v 1.1012 2020/04/20 14:59:31 nicm Exp $ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef TMUX_H
#define TMUX_H

#include <sys/time.h>
#include <sys/queue.h>
#include <sys/tree.h>

#include <bitstring.h>
#include <event.h>
#include <limits.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <termios.h>
#include <wchar.h>

#include "xmalloc.h"

extern char   **environ;

struct args;
struct args_value;
struct client;
struct cmd;
struct cmd_find_state;
struct cmdq_item;
struct cmdq_list;
struct cmdq_state;
struct cmds;
struct environ;
struct format_job_tree;
struct format_tree;
struct input_ctx;
struct job;
struct mode_tree_data;
struct mouse_event;
struct options;
struct options_array_item;
struct options_entry;
struct session;
struct tmuxpeer;
struct tmuxproc;
struct winlink;

/* Client-server protocol version. */
#define PROTOCOL_VERSION 8

/* Default configuration files. */
#ifndef TMUX_CONF
#define TMUX_CONF "/etc/tmux.conf:~/.tmux.conf"
#endif

/* Minimum layout cell size, NOT including border lines. */
#define PANE_MINIMUM 1

/* Minimum and maximum window size. */
#define WINDOW_MINIMUM PANE_MINIMUM
#define WINDOW_MAXIMUM 10000

/* Automatic name refresh interval, in microseconds. Must be < 1 second. */
#define NAME_INTERVAL 500000

/* Maximum size of data to hold from a pane. */
#define READ_SIZE 8192

/* 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)))

/* Number of items in array. */
#ifndef nitems
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
#endif

/* Alert option values. */
#define ALERT_NONE 0
#define ALERT_ANY 1
#define ALERT_CURRENT 2
#define ALERT_OTHER 3

/* Visual option values. */
#define VISUAL_OFF 0
#define VISUAL_ON 1
#define VISUAL_BOTH 2

/* Special key codes. */
#define KEYC_NONE    0x00ff000000000ULL
#define KEYC_UNKNOWN 0x00fe000000000ULL
#define KEYC_BASE    0x0001000000000ULL
#define KEYC_USER    0x0002000000000ULL

/* Key modifier bits. */
#define KEYC_ESCAPE  0x0100000000000ULL
#define KEYC_CTRL    0x0200000000000ULL
#define KEYC_SHIFT   0x0400000000000ULL
#define KEYC_XTERM   0x0800000000000ULL
#define KEYC_LITERAL 0x1000000000000ULL

/* Available user keys. */
#define KEYC_NUSER 1000

/* Mask to obtain key w/o modifiers. */
#define KEYC_MASK_MOD 0xff00000000000ULL
#define KEYC_MASK_KEY 0x00fffffffffffULL

/* Is this a mouse key? */
#define KEYC_IS_MOUSE(key) (((key) & KEYC_MASK_KEY) >= KEYC_MOUSE &&	\
    ((key) & KEYC_MASK_KEY) < KEYC_BSPACE)

/* Multiple click timeout. */
#define KEYC_CLICK_TIMEOUT 300

/* Mouse key codes. */
#define KEYC_MOUSE_KEY(name)					\
	KEYC_ ## name ## _PANE,					\
	KEYC_ ## name ## _STATUS,				\
	KEYC_ ## name ## _STATUS_LEFT,				\
	KEYC_ ## name ## _STATUS_RIGHT,				\
	KEYC_ ## name ## _STATUS_DEFAULT,			\
	KEYC_ ## name ## _BORDER
#define KEYC_MOUSE_STRING(name, s)				\
	{ #s "Pane", KEYC_ ## name ## _PANE },			\
	{ #s "Status", KEYC_ ## name ## _STATUS },		\
	{ #s "StatusLeft", KEYC_ ## name ## _STATUS_LEFT },	\
	{ #s "StatusRight", KEYC_ ## name ## _STATUS_RIGHT },	\
	{ #s "StatusDefault", KEYC_ ## name ## _STATUS_DEFAULT }, \
	{ #s "Border", KEYC_ ## name ## _BORDER }

/*
 * A single key. This can be ASCII or Unicode or one of the keys starting at
 * KEYC_BASE.
 */
typedef unsigned long long key_code;

/* Special key codes. */
enum {
	/* Focus events. */
	KEYC_FOCUS_IN = KEYC_BASE,
	KEYC_FOCUS_OUT,

	/* "Any" key, used if not found in key table. */
	KEYC_ANY,

	/* Paste brackets. */
	KEYC_PASTE_START,
	KEYC_PASTE_END,

	/* Mouse keys. */
	KEYC_MOUSE, /* unclassified mouse event */
	KEYC_DRAGGING, /* dragging in progress */
	KEYC_DOUBLECLICK, /* double click complete */
	KEYC_MOUSE_KEY(MOUSEMOVE),
	KEYC_MOUSE_KEY(MOUSEDOWN1),
	KEYC_MOUSE_KEY(MOUSEDOWN2),
	KEYC_MOUSE_KEY(MOUSEDOWN3),
	KEYC_MOUSE_KEY(MOUSEUP1),
	KEYC_MOUSE_KEY(MOUSEUP2),
	KEYC_MOUSE_KEY(MOUSEUP3),
	KEYC_MOUSE_KEY(MOUSEDRAG1),
	KEYC_MOUSE_KEY(MOUSEDRAG2),
	KEYC_MOUSE_KEY(MOUSEDRAG3),
	KEYC_MOUSE_KEY(MOUSEDRAGEND1),
	KEYC_MOUSE_KEY(MOUSEDRAGEND2),
	KEYC_MOUSE_KEY(MOUSEDRAGEND3),
	KEYC_MOUSE_KEY(WHEELUP),
	KEYC_MOUSE_KEY(WHEELDOWN),
	KEYC_MOUSE_KEY(SECONDCLICK1),
	KEYC_MOUSE_KEY(SECONDCLICK2),
	KEYC_MOUSE_KEY(SECONDCLICK3),
	KEYC_MOUSE_KEY(DOUBLECLICK1),
	KEYC_MOUSE_KEY(DOUBLECLICK2),
	KEYC_MOUSE_KEY(DOUBLECLICK3),
	KEYC_MOUSE_KEY(TRIPLECLICK1),
	KEYC_MOUSE_KEY(TRIPLECLICK2),
	KEYC_MOUSE_KEY(TRIPLECLICK3),

	/* Backspace key. */
	KEYC_BSPACE,

	/* Function keys. */
	KEYC_F1,
	KEYC_F2,
	KEYC_F3,
	KEYC_F4,
	KEYC_F5,
	KEYC_F6,
	KEYC_F7,
	KEYC_F8,
	KEYC_F9,
	KEYC_F10,
	KEYC_F11,
	KEYC_F12,
	KEYC_IC,
	KEYC_DC,
	KEYC_HOME,
	KEYC_END,
	KEYC_NPAGE,
	KEYC_PPAGE,
	KEYC_BTAB,

	/* Arrow keys. */
	KEYC_UP,
	KEYC_DOWN,
	KEYC_LEFT,
	KEYC_RIGHT,

	/* Numeric keypad. */
	KEYC_KP_SLASH,
	KEYC_KP_STAR,
	KEYC_KP_MINUS,
	KEYC_KP_SEVEN,
	KEYC_KP_EIGHT,
	KEYC_KP_NINE,
	KEYC_KP_PLUS,
	KEYC_KP_FOUR,
	KEYC_KP_FIVE,
	KEYC_KP_SIX,
	KEYC_KP_ONE,
	KEYC_KP_TWO,
	KEYC_KP_THREE,
	KEYC_KP_ENTER,
	KEYC_KP_ZERO,
	KEYC_KP_PERIOD,
};

/* Termcap codes. */
enum tty_code_code {
	TTYC_ACSC,
	TTYC_AX,
	TTYC_BCE,
	TTYC_BEL,
	TTYC_BLINK,
	TTYC_BOLD,
	TTYC_CIVIS,
	TTYC_CLEAR,
	TTYC_CNORM,
	TTYC_COLORS,
	TTYC_CR,
	TTYC_CS,
	TTYC_CSR,
	TTYC_CUB,
	TTYC_CUB1,
	TTYC_CUD,
	TTYC_CUD1,
	TTYC_CUF,
	TTYC_CUF1,
	TTYC_CUP,
	TTYC_CUU,
	TTYC_CUU1,
	TTYC_CVVIS,
	TTYC_DCH,
	TTYC_DCH1,
	TTYC_DIM,
	TTYC_DL,
	TTYC_DL1,
	TTYC_E3,
	TTYC_ECH,
	TTYC_ED,
	TTYC_EL,
	TTYC_EL1,
	TTYC_ENACS,
	TTYC_FSL,
	TTYC_HOME,
	TTYC_HPA,
	TTYC_ICH,
	TTYC_ICH1,
	TTYC_IL,
	TTYC_IL1,
	TTYC_INDN,
	TTYC_INVIS,
	TTYC_KCBT,
	TTYC_KCUB1,
	TTYC_KCUD1,
	TTYC_KCUF1,
	TTYC_KCUU1,
	TTYC_KDC2,
	TTYC_KDC3,
	TTYC_KDC4,
	TTYC_KDC5,
	TTYC_KDC6,
	TTYC_KDC7,
	TTYC_KDCH1,
	TTYC_KDN2,
	TTYC_KDN3,
	TTYC_KDN4,
	TTYC_KDN5,
	TTYC_KDN6,
	TTYC_KDN7,
	TTYC_KEND,
	TTYC_KEND2,
	TTYC_KEND3,
	TTYC_KEND4,
	TTYC_KEND5,
	TTYC_KEND6,
	TTYC_KEND7,
	TTYC_KF1,
	TTYC_KF10,
	TTYC_KF11,
	TTYC_KF12,
	TTYC_KF13,
	TTYC_KF14,
	TTYC_KF15,
	TTYC_KF16,
	TTYC_KF17,
	TTYC_KF18,
	TTYC_KF19,
	TTYC_KF2,
	TTYC_KF20,
	TTYC_KF21,
	TTYC_KF22,
	TTYC_KF23,
	TTYC_KF24,
	TTYC_KF25,
	TTYC_KF26,
	TTYC_KF27,
	TTYC_KF28,
	TTYC_KF29,
	TTYC_KF3,
	TTYC_KF30,
	TTYC_KF31,
	TTYC_KF32,
	TTYC_KF33,
	TTYC_KF34,
	TTYC_KF35,
	TTYC_KF36,
	TTYC_KF37,
	TTYC_KF38,
	TTYC_KF39,
	TTYC_KF4,
	TTYC_KF40,
	TTYC_KF41,
	TTYC_KF42,
	TTYC_KF43,
	TTYC_KF44,
	TTYC_KF45,
	TTYC_KF46,
	TTYC_KF47,
	TTYC_KF48,
	TTYC_KF49,
	TTYC_KF5,
	TTYC_KF50,
	TTYC_KF51,
	TTYC_KF52,
	TTYC_KF53,
	TTYC_KF54,
	TTYC_KF55,
	TTYC_KF56,
	TTYC_KF57,
	TTYC_KF58,
	TTYC_KF59,
	TTYC_KF6,
	TTYC_KF60,
	TTYC_KF61,
	TTYC_KF62,
	TTYC_KF63,
	TTYC_KF7,
	TTYC_KF8,
	TTYC_KF9,
	TTYC_KHOM2,
	TTYC_KHOM3,
	TTYC_KHOM4,
	TTYC_KHOM5,
	TTYC_KHOM6,
	TTYC_KHOM7,
	TTYC_KHOME,
	TTYC_KIC2,
	TTYC_KIC3,
	TTYC_KIC4,
	TTYC_KIC5,
	TTYC_KIC6,
	TTYC_KIC7,
	TTYC_KICH1,
	TTYC_KIND,
	TTYC_KLFT2,
	TTYC_KLFT3,
	TTYC_KLFT4,
	TTYC_KLFT5,
	TTYC_KLFT6,
	TTYC_KLFT7,
	TTYC_KMOUS,
	TTYC_KNP,
	TTYC_KNXT2,
	TTYC_KNXT3,
	TTYC_KNXT4,
	TTYC_KNXT5,
	TTYC_KNXT6,
	TTYC_KNXT7,
	TTYC_KPP,
	TTYC_KPRV2,
	TTYC_KPRV3,
	TTYC_KPRV4,
	TTYC_KPRV5,
	TTYC_KPRV6,
	TTYC_KPRV7,
	TTYC_KRI,
	TTYC_KRIT2,
	TTYC_KRIT3,
	TTYC_KRIT4,
	TTYC_KRIT5,
	TTYC_KRIT6,
	TTYC_KRIT7,
	TTYC_KUP2,
	TTYC_KUP3,
	TTYC_KUP4,
	TTYC_KUP5,
	TTYC_KUP6,
	TTYC_KUP7,
	TTYC_MS,
	TTYC_OP,
	TTYC_REV,
	TTYC_RGB,
	TTYC_RI,
	TTYC_RIN,
	TTYC_RMACS,
	TTYC_RMCUP,
	TTYC_RMKX,
	TTYC_SE,
	TTYC_SETAB,
	TTYC_SETAF,
	TTYC_SETRGBB,
	TTYC_SETRGBF,
	TTYC_SETULC,
	TTYC_SGR0,
	TTYC_SITM,
	TTYC_SMACS,
	TTYC_SMCUP,
	TTYC_SMOL,
	TTYC_SMKX,
	TTYC_SMSO,
	TTYC_SMULX,
	TTYC_SMUL,
	TTYC_SMXX,
	TTYC_SS,
	TTYC_SYNC,
	TTYC_TC,
	TTYC_TSL,
	TTYC_U8,
	TTYC_VPA,
	TTYC_XENL,
	TTYC_XT,
};

/* Message codes. */
enum msgtype {
	MSG_VERSION = 12,

	MSG_IDENTIFY_FLAGS = 100,
	MSG_IDENTIFY_TERM,
	MSG_IDENTIFY_TTYNAME,
	MSG_IDENTIFY_OLDCWD, /* unused */
	MSG_IDENTIFY_STDIN,
	MSG_IDENTIFY_ENVIRON,
	MSG_IDENTIFY_DONE,
	MSG_IDENTIFY_CLIENTPID,
	MSG_IDENTIFY_CWD,
	MSG_IDENTIFY_FEATURES,

	MSG_COMMAND = 200,
	MSG_DETACH,
	MSG_DETACHKILL,
	MSG_EXIT,
	MSG_EXITED,
	MSG_EXITING,
	MSG_LOCK,
	MSG_READY,
	MSG_RESIZE,
	MSG_SHELL,
	MSG_SHUTDOWN,
	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
};

/*
 * Message data.
 *
 * Don't forget to bump PROTOCOL_VERSION if any of these change!
 */
struct msg_command {
	int	argc;
}; /* followed by packed argv */

struct msg_read_open {
	int	stream;
	int	fd;
}; /* followed by path */

struct msg_read_data {
	int	stream;
};

struct msg_read_done {
	int	stream;
	int	error;
};

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. */
#define MODEKEY_EMACS 0
#define MODEKEY_VI 1

/* Modes. */
#define MODE_CURSOR 0x1
#define MODE_INSERT 0x2
#define MODE_KCURSOR 0x4
#define MODE_KKEYPAD 0x8	/* set = application, clear = number */
#define MODE_WRAP 0x10		/* whether lines wrap */
#define MODE_MOUSE_STANDARD 0x20
#define MODE_MOUSE_BUTTON 0x40
#define MODE_BLINKING 0x80
#define MODE_MOUSE_UTF8 0x100
#define MODE_MOUSE_SGR 0x200
#define MODE_BRACKETPASTE 0x400
#define MODE_FOCUSON 0x800
#define MODE_MOUSE_ALL 0x1000
#define MODE_ORIGIN 0x2000
#define MODE_CRLF 0x4000

#define ALL_MODES 0xffffff
#define ALL_MOUSE_MODES (MODE_MOUSE_STANDARD|MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)
#define MOTION_MOUSE_MODES (MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)

/*
 * A single UTF-8 character. UTF8_SIZE must be big enough to hold
 * combining characters as well, currently at most five (of three
 * bytes) are supported.
*/
#define UTF8_SIZE 18
struct utf8_data {
	u_char	data[UTF8_SIZE];

	u_char	have;
	u_char	size;

	u_char	width;	/* 0xff if invalid */
} __packed;
enum utf8_state {
	UTF8_MORE,
	UTF8_DONE,
	UTF8_ERROR
};

/* Colour flags. */
#define COLOUR_FLAG_256 0x01000000
#define COLOUR_FLAG_RGB 0x02000000

/* Special colours. */
#define COLOUR_DEFAULT(c) ((c) == 8 || (c) == 9)

/* Grid attributes. Anything above 0xff is stored in an extended cell. */
#define GRID_ATTR_BRIGHT 0x1
#define GRID_ATTR_DIM 0x2
#define GRID_ATTR_UNDERSCORE 0x4
#define GRID_ATTR_BLINK 0x8
#define GRID_ATTR_REVERSE 0x10
#define GRID_ATTR_HIDDEN 0x20
#define GRID_ATTR_ITALICS 0x40
#define GRID_ATTR_CHARSET 0x80	/* alternative character set */
#define GRID_ATTR_STRIKETHROUGH 0x100
#define GRID_ATTR_UNDERSCORE_2 0x200
#define GRID_ATTR_UNDERSCORE_3 0x400
#define GRID_ATTR_UNDERSCORE_4 0x800
#define GRID_ATTR_UNDERSCORE_5 0x1000
#define GRID_ATTR_OVERLINE 0x2000

/* All underscore attributes. */
#define GRID_ATTR_ALL_UNDERSCORE \
	(GRID_ATTR_UNDERSCORE|	 \
	 GRID_ATTR_UNDERSCORE_2| \
	 GRID_ATTR_UNDERSCORE_3| \
	 GRID_ATTR_UNDERSCORE_4| \
	 GRID_ATTR_UNDERSCORE_5)

/* Grid flags. */
#define GRID_FLAG_FG256 0x1
#define GRID_FLAG_BG256 0x2
#define GRID_FLAG_PADDING 0x4
#define GRID_FLAG_EXTENDED 0x8
#define GRID_FLAG_SELECTED 0x10
#define GRID_FLAG_NOPALETTE 0x20
#define GRID_FLAG_CLEARED 0x40

/* Grid line flags. */
#define GRID_LINE_WRAPPED 0x1
#define GRID_LINE_EXTENDED 0x2
#define GRID_LINE_DEAD 0x4

/* Grid cell data. */
struct grid_cell {
	struct utf8_data	data; /* 21 bytes */
	u_short			attr;
	u_char			flags;
	int			fg;
	int			bg;
	int			us;
} __packed;
struct grid_cell_entry {
	u_char			flags;
	union {
		u_int		offset;
		struct {
			u_char	attr;
			u_char	fg;
			u_char	bg;
			u_char	data;
		} data;
	};
} __packed;

/* Grid line. */
struct grid_line {
	u_int			 cellused;
	u_int			 cellsize;
	struct grid_cell_entry	*celldata;

	u_int			 extdsize;
	struct grid_cell	*extddata;

	int			 flags;
} __packed;

/* Entire grid of cells. */
struct grid {
	int			 flags;
#define GRID_HISTORY 0x1 /* scroll lines into history */

	u_int			 sx;
	u_int			 sy;

	u_int			 hscrolled;
	u_int			 hsize;
	u_int			 hlimit;

	struct grid_line	*linedata;
};

/* Style alignment. */
enum style_align {
	STYLE_ALIGN_DEFAULT,
	STYLE_ALIGN_LEFT,
	STYLE_ALIGN_CENTRE,
	STYLE_ALIGN_RIGHT
};

/* Style list. */
enum style_list {
	STYLE_LIST_OFF,
	STYLE_LIST_ON,
	STYLE_LIST_FOCUS,
	STYLE_LIST_LEFT_MARKER,
	STYLE_LIST_RIGHT_MARKER,
};

/* Style range. */
enum style_range_type {
	STYLE_RANGE_NONE,
	STYLE_RANGE_LEFT,
	STYLE_RANGE_RIGHT,
	STYLE_RANGE_WINDOW
};
struct style_range {
	enum style_range_type	 type;
	u_int			 argument;

	u_int			 start;
	u_int			 end; /* not included */

	TAILQ_ENTRY(style_range) entry;
};
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;

	int			fill;
	enum style_align	align;
	enum style_list		list;

	enum style_range_type	range_type;
	u_int			range_argument;

	enum style_default_type	default_type;
};

/* Virtual screen. */
struct screen_sel;
struct screen_titles;
struct screen {
	char			*title;
	char			*path;
	struct screen_titles	*titles;

	struct grid		*grid;		/* grid data */

	u_int			 cx;		/* cursor x */
	u_int			 cy;		/* cursor y */

	u_int			 cstyle;	/* cursor style */
	char			*ccolour;	/* cursor colour string */

	u_int			 rupper;	/* scroll region top */
	u_int			 rlower;	/* scroll region bottom */

	int			 mode;

	u_int			 saved_cx;
	u_int			 saved_cy;
	struct grid		*saved_grid;
	struct grid_cell	 saved_cell;
	int			 saved_flags;

	bitstr_t		*tabs;
	struct screen_sel	*sel;

	struct screen_write_collect_line *write_list;
};

/* Screen write context. */
struct screen_write_collect_item;
struct screen_write_collect_line;
struct screen_write_ctx {
	struct window_pane	*wp;
	struct screen		*s;
	int			 sync;

	struct screen_write_collect_item *item;
	u_int			 scrolled;
	u_int			 bg;

	u_int			 cells;
	u_int			 written;
	u_int			 skipped;
};

/* Screen redraw context. */
struct screen_redraw_ctx {
	struct client	*c;

	u_int		 statuslines;
	int		 statustop;

	int		 pane_status;

	u_int		 sx;
	u_int		 sy;
	u_int		 ox;
	u_int		 oy;
};

/* Screen size. */
#define screen_size_x(s) ((s)->grid->sx)
#define screen_size_y(s) ((s)->grid->sy)
#define screen_hsize(s) ((s)->grid->hsize)
#define screen_hlimit(s) ((s)->grid->hlimit)

/* Menu. */
struct menu_item {
	const char	*name;
	key_code	 key;
	const char	*command;
};
struct menu {
	const char		*title;
	struct menu_item	*items;
	u_int			 count;
	u_int			 width;
};
typedef void (*menu_choice_cb)(struct menu *, u_int, key_code, void *);

/*
 * Window mode. Windows can be in several modes and this is used to call the
 * right function to handle input and output.
 */
struct window_mode_entry;
struct window_mode {
	const char	*name;
	const char	*default_format;

	struct screen	*(*init)(struct window_mode_entry *,
			     struct cmd_find_state *, struct args *);
	void		 (*free)(struct window_mode_entry *);
	void		 (*resize)(struct window_mode_entry *, u_int, u_int);
	void		 (*key)(struct window_mode_entry *, struct client *,
			     struct session *, struct winlink *, key_code,
			     struct mouse_event *);

	const char	*(*key_table)(struct window_mode_entry *);
	void		 (*command)(struct window_mode_entry *, struct client *,
			     struct session *, struct winlink *, struct args *,
			     struct mouse_event *);
	void		 (*formats)(struct window_mode_entry *,
			     struct format_tree *);
};

/* Active window mode. */
struct window_mode_entry {
	struct window_pane		*wp;
	struct window_pane		*swp;

	const struct window_mode	*mode;
	void				*data;

	struct screen			*screen;
	u_int				 prefix;

	TAILQ_ENTRY (window_mode_entry)	 entry;
};

/* Child window structure. */
struct window_pane {
	u_int		 id;
	u_int		 active_point;

	struct window	*window;
	struct options	*options;

	struct layout_cell *layout_cell;
	struct layout_cell *saved_layout_cell;

	u_int		 sx;
	u_int		 sy;

	u_int		 osx;
	u_int		 osy;

	u_int		 xoff;
	u_int		 yoff;

	int		 flags;
#define PANE_REDRAW 0x1
#define PANE_DROP 0x2
#define PANE_FOCUSED 0x4
#define PANE_RESIZE 0x8
#define PANE_RESIZEFORCE 0x10
#define PANE_FOCUSPUSH 0x20
#define PANE_INPUTOFF 0x40
#define PANE_CHANGED 0x80
#define PANE_EXITED 0x100
#define PANE_STATUSREADY 0x200
#define PANE_STATUSDRAWN 0x400
#define PANE_EMPTY 0x800
#define PANE_STYLECHANGED 0x1000
#define PANE_RESIZED 0x2000

	int		 argc;
	char	       **argv;
	char		*shell;
	char		*cwd;

	pid_t		 pid;
	char		 tty[TTY_NAME_MAX];
	int		 status;

	int		 fd;
	struct bufferevent *event;

	struct event	 resize_timer;

	struct input_ctx *ictx;

	struct style	 cached_style;
	struct style	 cached_active_style;
	int		*palette;

	int		 pipe_fd;
	struct bufferevent *pipe_event;
	size_t		 pipe_off;

	struct screen	*screen;
	struct screen	 base;

	struct screen	 status_screen;
	size_t		 status_size;

	TAILQ_HEAD (, window_mode_entry) modes;

	char		*searchstr;
	int		 searchregex;

	size_t		 written;
	size_t		 skipped;

	TAILQ_ENTRY(window_pane) entry;
	RB_ENTRY(window_pane) tree_entry;
};
TAILQ_HEAD(window_panes, window_pane);
RB_HEAD(window_pane_tree, window_pane);

/* Window structure. */
struct window {
	u_int		 id;
	void		*latest;

	char		*name;
	struct event	 name_event;
	struct timeval	 name_time;

	struct event	 alerts_timer;
	struct event	 offset_timer;

	struct timeval	 activity_time;

	struct window_pane *active;
	struct window_pane *last;
	struct window_panes panes;

	int		 lastlayout;
	struct layout_cell *layout_root;
	struct layout_cell *saved_layout_root;
	char		*old_layout;

	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;
	TAILQ_ENTRY(window) alerts_entry;

	struct options	*options;

	u_int		 references;
	TAILQ_HEAD(, winlink) winlinks;

	RB_ENTRY(window) entry;
};
RB_HEAD(windows, window);

/* Entry on local window list. */
struct winlink {
	int		 idx;
	struct session	*session;
	struct window	*window;

	int		 flags;
#define WINLINK_BELL 0x1
#define WINLINK_ACTIVITY 0x2
#define WINLINK_SILENCE 0x4
#define WINLINK_ALERTFLAGS (WINLINK_BELL|WINLINK_ACTIVITY|WINLINK_SILENCE)

	RB_ENTRY(winlink) entry;
	TAILQ_ENTRY(winlink) wentry;
	TAILQ_ENTRY(winlink) sentry;
};
RB_HEAD(winlinks, winlink);
TAILQ_HEAD(winlink_stack, winlink);

/* Window size option. */
#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
#define PANE_STATUS_TOP 1
#define PANE_STATUS_BOTTOM 2

/* Layout direction. */
enum layout_type {
	LAYOUT_LEFTRIGHT,
	LAYOUT_TOPBOTTOM,
	LAYOUT_WINDOWPANE
};

/* Layout cells queue. */
TAILQ_HEAD(layout_cells, layout_cell);

/* Layout cell. */
struct layout_cell {
	enum layout_type type;

	struct layout_cell *parent;

	u_int		 sx;
	u_int		 sy;

	u_int		 xoff;
	u_int		 yoff;

	struct window_pane *wp;
	struct layout_cells cells;

	TAILQ_ENTRY(layout_cell) entry;
};

/* Environment variable. */
struct environ_entry {
	char		*name;
	char		*value;

	int		 flags;
#define ENVIRON_HIDDEN 0x1

	RB_ENTRY(environ_entry) entry;
};

/* Client session. */
struct session_group {
	const char		*name;
	TAILQ_HEAD(, session)	 sessions;

	RB_ENTRY(session_group)	 entry;
};
RB_HEAD(session_groups, session_group);

struct session {
	u_int		 id;

	char		*name;
	const char	*cwd;

	struct timeval	 creation_time;
	struct timeval	 last_attached_time;
	struct timeval	 activity_time;
	struct timeval	 last_activity_time;

	struct event	 lock_timer;

	struct winlink	*curw;
	struct winlink_stack lastw;
	struct winlinks	 windows;

	int		 statusat;
	u_int		 statuslines;

	struct options	*options;

#define SESSION_PASTING 0x1
#define SESSION_ALERTED 0x2
	int		 flags;

	u_int		 attached;

	struct termios	*tio;

	struct environ	*environ;

	int		 references;

	TAILQ_ENTRY(session) gentry;
	RB_ENTRY(session)    entry;
};
RB_HEAD(sessions, session);

/* Mouse button masks. */
#define MOUSE_MASK_BUTTONS 3
#define MOUSE_MASK_SHIFT 4
#define MOUSE_MASK_META 8
#define MOUSE_MASK_CTRL 16
#define MOUSE_MASK_DRAG 32
#define MOUSE_MASK_WHEEL 64

/* Mouse wheel states. */
#define MOUSE_WHEEL_UP 0
#define MOUSE_WHEEL_DOWN 1

/* Mouse helpers. */
#define MOUSE_BUTTONS(b) ((b) & MOUSE_MASK_BUTTONS)
#define MOUSE_WHEEL(b) ((b) & MOUSE_MASK_WHEEL)
#define MOUSE_DRAG(b) ((b) & MOUSE_MASK_DRAG)
#define MOUSE_RELEASE(b) (((b) & MOUSE_MASK_BUTTONS) == 3)

/* Mouse input. */
struct mouse_event {
	int		valid;
	int		ignore;

	key_code	key;

	int		statusat;
	u_int		statuslines;

	u_int		x;
	u_int		y;
	u_int		b;

	u_int		lx;
	u_int		ly;
	u_int		lb;

	u_int		ox;
	u_int		oy;

	int		s;
	int		w;
	int		wp;

	u_int		sgr_type;
	u_int		sgr_b;
};

/* Key event. */
struct key_event {
	key_code		key;
	struct mouse_event	m;
};

/* TTY information. */
struct tty_key {
	char		 ch;
	key_code	 key;

	struct tty_key	*left;
	struct tty_key	*right;

	struct tty_key	*next;
};

struct tty_code;
struct tty_term {
	char		*name;
	struct tty	*tty;
	int		 features;

	char		 acs[UCHAR_MAX + 1][2];

	struct tty_code	*codes;

#define TERM_256COLOURS 0x1
#define TERM_NOXENL 0x2
#define TERM_DECSLRM 0x4
#define TERM_DECFRA 0x8
#define TERM_RGBCOLOURS 0x10
	int		 flags;

	LIST_ENTRY(tty_term) entry;
};
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;
	u_int		 cstyle;
	char		*ccolour;

	int		 oflag;
	u_int		 oox;
	u_int		 ooy;
	u_int		 osx;
	u_int		 osy;

	int		 mode;

	u_int		 rlower;
	u_int		 rupper;

	u_int		 rleft;
	u_int		 rright;

	int		 fd;
	struct event	 event_in;
	struct evbuffer	*in;
	struct event	 event_out;
	struct evbuffer	*out;
	struct event	 timer;
	size_t		 discarded;

	struct termios	 tio;

	struct grid_cell cell;

	int		 last_wp;
	struct grid_cell last_cell;

#define TTY_NOCURSOR 0x1
#define TTY_FREEZE 0x2
#define TTY_TIMER 0x4
/* 0x8 unused */
#define TTY_STARTED 0x10
#define TTY_OPENED 0x20
#define TTY_FOCUS 0x40
#define TTY_BLOCK 0x80
#define TTY_HAVEDA 0x100
#define TTY_HAVEDSR 0x200
#define TTY_SYNCING 0x400
	int		 flags;

	struct tty_term	*term;

	u_int		 mouse_last_x;
	u_int		 mouse_last_y;
	u_int		 mouse_last_b;
	int		 mouse_drag_flag;
	void		(*mouse_drag_update)(struct client *,
			    struct mouse_event *);
	void		(*mouse_drag_release)(struct client *,
			    struct mouse_event *);

	struct event	 key_timer;
	struct tty_key	*key_tree;
};

/* TTY command context. */
struct tty_ctx {
	struct window_pane	*wp;

	const struct grid_cell	*cell;
	int			 wrapped;

	u_int			 num;
	void			*ptr;

	/*
	 * Cursor and region position before the screen was updated - this is
	 * where the command should be applied; the values in the screen have
	 * already been updated.
	 */
	u_int		 ocx;
	u_int		 ocy;

	u_int		 orupper;
	u_int		 orlower;

	/* Pane offset. */
	u_int		 xoff;
	u_int		 yoff;

	/* The background colour used for clearing (erasing). */
	u_int		 bg;

	/* Window offset and size. */
	int		 bigger;
	u_int		 ox;
	u_int		 oy;
	u_int		 sx;
	u_int		 sy;
};

/* Saved message entry. */
struct message_entry {
	char	*msg;
	u_int	 msg_num;
	time_t	 msg_time;
	TAILQ_ENTRY(message_entry) entry;
};

/* Parsed arguments structures. */
struct args_entry;
RB_HEAD(args_tree, args_entry);
struct args {
	struct args_tree	  tree;
	int			  argc;
	char			**argv;
};

/* Command find structures. */
enum cmd_find_type {
	CMD_FIND_PANE,
	CMD_FIND_WINDOW,
	CMD_FIND_SESSION,
};
struct cmd_find_state {
	int			 flags;
	struct cmd_find_state	*current;

	struct session		*s;
	struct winlink		*wl;
	struct window		*w;
	struct window_pane	*wp;
	int			 idx;
};

/* Command find flags. */
#define CMD_FIND_PREFER_UNATTACHED 0x1
#define CMD_FIND_QUIET 0x2
#define CMD_FIND_WINDOW_INDEX 0x4
#define CMD_FIND_DEFAULT_MARKED 0x8
#define CMD_FIND_EXACT_SESSION 0x10
#define CMD_FIND_EXACT_WINDOW 0x20
#define CMD_FIND_CANFAIL 0x40

/* List of commands. */
struct cmd_list {
	int		 references;
	u_int		 group;
	struct cmds	*list;
};

/* Command return values. */
enum cmd_retval {
	CMD_RETURN_ERROR = -1,
	CMD_RETURN_NORMAL = 0,
	CMD_RETURN_WAIT,
	CMD_RETURN_STOP
};

/* Command parse result. */
enum cmd_parse_status {
	CMD_PARSE_EMPTY,
	CMD_PARSE_ERROR,
	CMD_PARSE_SUCCESS
};
struct cmd_parse_result {
	enum cmd_parse_status	 status;
	struct cmd_list		*cmdlist;
	char			*error;
};
struct cmd_parse_input {
	int			 flags;
#define CMD_PARSE_QUIET 0x1
#define CMD_PARSE_PARSEONLY 0x2
#define CMD_PARSE_NOALIAS 0x4
#define CMD_PARSE_VERBOSE 0x8
#define CMD_PARSE_ONEGROUP 0x10

	const char		*file;
	u_int			 line;

	struct cmdq_item	*item;
	struct client		*c;
	struct cmd_find_state	 fs;
};

/* Command queue flags. */
#define CMDQ_STATE_REPEAT 0x1
#define CMDQ_STATE_CONTROL 0x2
#define CMDQ_STATE_NOHOOKS 0x4

/* Command queue callback. */
typedef enum cmd_retval (*cmdq_cb) (struct cmdq_item *, void *);

/* Command definition flag. */
struct cmd_entry_flag {
	char			 flag;
	enum cmd_find_type	 type;
	int			 flags;
};

/* Command definition. */
struct cmd_entry {
	const char		*name;
	const char		*alias;

	struct {
		const char	*template;
		int		 lower;
		int		 upper;
	} args;
	const char		*usage;

	struct cmd_entry_flag	 source;
	struct cmd_entry_flag	 target;

#define CMD_STARTSERVER 0x1
#define CMD_READONLY 0x2
#define CMD_AFTERHOOK 0x4
#define CMD_CLIENT_CFLAG 0x8
#define CMD_CLIENT_TFLAG 0x10
#define CMD_CLIENT_CANFAIL 0x20
	int		 flags;

	enum cmd_retval	 (*exec)(struct cmd *, struct cmdq_item *);
};

/* Status line. */
#define STATUS_LINES_LIMIT 5
struct status_line_entry {
	char			*expanded;
	struct style_ranges	 ranges;
};
struct status_line {
	struct event		 timer;

	struct screen		 screen;
	struct screen		*active;
	int			 references;

	struct grid_cell	 style;
	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 *);
typedef int (*overlay_check_cb)(struct client *, u_int, u_int);
typedef int (*overlay_mode_cb)(struct client *, u_int *, u_int *);
typedef void (*overlay_draw_cb)(struct client *, struct screen_redraw_ctx *);
typedef int (*overlay_key_cb)(struct client *, struct key_event *);
typedef void (*overlay_free_cb)(struct client *);
struct client {
	const char	*name;
	struct tmuxpeer	*peer;
	struct cmdq_list *queue;

	pid_t		 pid;
	int		 fd;
	struct event	 event;
	int		 retval;

	struct timeval	 creation_time;
	struct timeval	 activity_time;

	struct environ	*environ;
	struct format_job_tree	*jobs;

	char		*title;
	const char	*cwd;

	char		*term_name;
	int		 term_features;

	char		*ttyname;
	struct tty	 tty;

	size_t		 written;
	size_t		 discarded;
	size_t		 redraw;

	struct event	 repeat_timer;

	struct event	 click_timer;
	u_int		 click_button;
	struct mouse_event click_event;

	struct status_line status;

#define CLIENT_TERMINAL 0x1
#define CLIENT_LOGIN 0x2
#define CLIENT_EXIT 0x4
#define CLIENT_REDRAWWINDOW 0x8
#define CLIENT_REDRAWSTATUS 0x10
#define CLIENT_REPEAT 0x20
#define CLIENT_SUSPENDED 0x40
#define CLIENT_ATTACHED 0x80
#define CLIENT_EXITED 0x100
#define CLIENT_DEAD 0x200
#define CLIENT_REDRAWBORDERS 0x400
#define CLIENT_READONLY 0x800
#define CLIENT_DETACHING 0x1000
#define CLIENT_CONTROL 0x2000
#define CLIENT_CONTROLCONTROL 0x4000
#define CLIENT_FOCUSED 0x8000
#define CLIENT_UTF8 0x10000
/* 0x20000 unused */
#define CLIENT_IDENTIFIED 0x40000
#define CLIENT_STATUSFORCE 0x80000
#define CLIENT_DOUBLECLICK 0x100000
#define CLIENT_TRIPLECLICK 0x200000
#define CLIENT_SIZECHANGED 0x400000
#define CLIENT_STATUSOFF 0x800000
#define CLIENT_REDRAWSTATUSALWAYS 0x1000000
#define CLIENT_REDRAWOVERLAY 0x2000000
#define CLIENT_CONTROL_NOOUTPUT 0x4000000
#define CLIENT_DEFAULTSOCKET 0x8000000
#define CLIENT_STARTSERVER 0x10000000
#define CLIENT_REDRAWPANES 0x20000000
#define CLIENT_ALLREDRAWFLAGS		\
	(CLIENT_REDRAWWINDOW|		\
	 CLIENT_REDRAWSTATUS|		\
	 CLIENT_REDRAWSTATUSALWAYS|	\
	 CLIENT_REDRAWBORDERS|		\
	 CLIENT_REDRAWOVERLAY|		\
	 CLIENT_REDRAWPANES)
#define CLIENT_UNATTACHEDFLAGS	\
	(CLIENT_DEAD|		\
	 CLIENT_SUSPENDED|	\
	 CLIENT_DETACHING)
#define CLIENT_NOSIZEFLAGS	\
	(CLIENT_DEAD|		\
	 CLIENT_SUSPENDED|	\
	 CLIENT_DETACHING)
	int		 flags;
	struct key_table *keytable;

	uint64_t	 redraw_panes;

	char		*message_string;
	struct event	 message_timer;
	u_int		 message_next;
	TAILQ_HEAD(, message_entry) message_log;

	char		*prompt_string;
	struct utf8_data *prompt_buffer;
	size_t		 prompt_index;
	prompt_input_cb	 prompt_inputcb;
	prompt_free_cb	 prompt_freecb;
	void		*prompt_data;
	u_int		 prompt_hindex;
	enum { PROMPT_ENTRY, PROMPT_COMMAND } prompt_mode;
	struct utf8_data *prompt_saved;

#define PROMPT_SINGLE 0x1
#define PROMPT_NUMERIC 0x2
#define PROMPT_INCREMENTAL 0x4
#define PROMPT_NOFORMAT 0x8
#define PROMPT_KEY 0x10
	int		 prompt_flags;

	struct session	*session;
	struct session	*last_session;

	int		 references;

	void		*pan_window;
	u_int		 pan_ox;
	u_int		 pan_oy;

	overlay_check_cb overlay_check;
	overlay_mode_cb	 overlay_mode;
	overlay_draw_cb	 overlay_draw;
	overlay_key_cb	 overlay_key;
	overlay_free_cb	 overlay_free;
	void		*overlay_data;
	struct event	 overlay_timer;

	struct client_files files;

	TAILQ_ENTRY(client) entry;
};
TAILQ_HEAD(clients, client);

/* Key binding and key table. */
struct key_binding {
	key_code		 key;
	struct cmd_list		*cmdlist;
	const char		*note;

	int			 flags;
#define KEY_BINDING_REPEAT 0x1

	RB_ENTRY(key_binding)	 entry;
};
RB_HEAD(key_bindings, key_binding);

struct key_table {
	const char		*name;
	struct key_bindings	 key_bindings;

	u_int			 references;

	RB_ENTRY(key_table)	 entry;
};
RB_HEAD(key_tables, key_table);

/* Option data. */
RB_HEAD(options_array, options_array_item);
union options_value {
	char				 *string;
	long long			  number;
	struct style			  style;
	struct options_array		  array;
	struct cmd_list			 *cmdlist;
};

/* Option table entries. */
enum options_table_type {
	OPTIONS_TABLE_STRING,
	OPTIONS_TABLE_NUMBER,
	OPTIONS_TABLE_KEY,
	OPTIONS_TABLE_COLOUR,
	OPTIONS_TABLE_FLAG,
	OPTIONS_TABLE_CHOICE,
	OPTIONS_TABLE_STYLE,
	OPTIONS_TABLE_COMMAND
};

#define OPTIONS_TABLE_NONE 0
#define OPTIONS_TABLE_SERVER 0x1
#define OPTIONS_TABLE_SESSION 0x2
#define OPTIONS_TABLE_WINDOW 0x4
#define OPTIONS_TABLE_PANE 0x8

#define OPTIONS_TABLE_IS_ARRAY 0x1
#define OPTIONS_TABLE_IS_HOOK 0x2

struct options_table_entry {
	const char		 *name;
	enum options_table_type	  type;
	int			  scope;
	int                       flags;

	u_int			  minimum;
	u_int			  maximum;
	const char		**choices;

	const char		 *default_str;
	long long		  default_num;
	const char		**default_arr;

	const char		 *separator;
	const char		 *pattern;
};

/* Common command usages. */
#define CMD_TARGET_PANE_USAGE "[-t target-pane]"
#define CMD_TARGET_WINDOW_USAGE "[-t target-window]"
#define CMD_TARGET_SESSION_USAGE "[-t target-session]"
#define CMD_TARGET_CLIENT_USAGE "[-t target-client]"
#define CMD_SRCDST_PANE_USAGE "[-s src-pane] [-t dst-pane]"
#define CMD_SRCDST_WINDOW_USAGE "[-s src-window] [-t dst-window]"
#define CMD_SRCDST_SESSION_USAGE "[-s src-session] [-t dst-session]"
#define CMD_SRCDST_CLIENT_USAGE "[-s src-client] [-t dst-client]"
#define CMD_BUFFER_USAGE "[-b buffer-name]"

/* Spawn common context. */
struct spawn_context {
	struct cmdq_item	 *item;

	struct session		 *s;
	struct winlink		 *wl;
	struct client		 *tc;

	struct window_pane	 *wp0;
	struct layout_cell	 *lc;

	const char		 *name;
	char			**argv;
	int			  argc;
	struct environ           *environ;

	int			  idx;
	const char		 *cwd;

	int			  flags;
#define SPAWN_KILL 0x1
#define SPAWN_DETACHED 0x2
#define SPAWN_RESPAWN 0x4
#define SPAWN_BEFORE 0x8
#define SPAWN_NONOTIFY 0x10
#define SPAWN_FULLSIZE 0x20
#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;
extern struct options	*global_w_options;
extern struct environ	*global_environ;
extern struct timeval	 start_time;
extern const char	*socket_path;
extern const char	*shell_command;
extern int		 ptm_fd;
extern const char	*shell_command;
int		 checkshell(const char *);
void		 setblocking(int, int);
const char	*sig2name(int);
const char	*find_cwd(void);
const char	*find_home(void);
const char	*getversion(void);

/* proc.c */
struct imsg;
int	proc_send(struct tmuxpeer *, enum msgtype, int, const void *, size_t);
struct tmuxproc *proc_start(const char *);
void	proc_loop(struct tmuxproc *, int (*)(void));
void	proc_exit(struct tmuxproc *);
void	proc_set_signals(struct tmuxproc *, void(*)(int));
void	proc_clear_signals(struct tmuxproc *, int);
struct tmuxpeer *proc_add_peer(struct tmuxproc *, int,
	    void (*)(struct imsg *, void *), void *);
void	proc_remove_peer(struct tmuxpeer *);
void	proc_kill_peer(struct tmuxpeer *);
void	proc_toggle_log(struct tmuxproc *);

/* cfg.c */
extern int cfg_finished;
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 *);
void	cfg_show_causes(struct session *);

/* paste.c */
struct paste_buffer;
const char	*paste_buffer_name(struct paste_buffer *);
u_int		 paste_buffer_order(struct paste_buffer *);
time_t		 paste_buffer_created(struct paste_buffer *);
const char	*paste_buffer_data(struct paste_buffer *, size_t *);
struct paste_buffer *paste_walk(struct paste_buffer *);
struct paste_buffer *paste_get_top(const char **);
struct paste_buffer *paste_get_name(const char *);
void		 paste_free(struct paste_buffer *);
void		 paste_add(const char *, char *, size_t);
int		 paste_rename(const char *, const char *, char **);
int		 paste_set(char *, size_t, const char *, char **);
char		*paste_make_sample(struct paste_buffer *);

/* format.c */
#define FORMAT_STATUS 0x1
#define FORMAT_FORCE 0x2
#define FORMAT_NOJOBS 0x4
#define FORMAT_VERBOSE 0x8
#define FORMAT_NONE 0
#define FORMAT_PANE 0x80000000U
#define FORMAT_WINDOW 0x40000000U
struct format_tree;
struct format_modifier;
const char	*format_skip(const char *, const char *);
int		 format_true(const char *);
struct format_tree *format_create(struct client *, struct cmdq_item *, int,
		     int);
void		 format_free(struct format_tree *);
void		 format_merge(struct format_tree *, struct format_tree *);
void printflike(3, 4) format_add(struct format_tree *, const char *,
		     const char *, ...);
void		 format_each(struct format_tree *, void (*)(const char *,
		     const char *, void *), void *);
char		*format_expand_time(struct format_tree *, const char *);
char		*format_expand(struct format_tree *, const char *);
char		*format_single(struct cmdq_item *, const char *,
		     struct client *, struct session *, struct winlink *,
		     struct window_pane *);
char		*format_single_from_target(struct cmdq_item *, const char *);
void		 format_defaults(struct format_tree *, struct client *,
		     struct session *, struct winlink *, struct window_pane *);
void		 format_defaults_window(struct format_tree *, struct window *);
void		 format_defaults_pane(struct format_tree *,
		     struct window_pane *);
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 *,
		     const struct grid_cell *, u_int, const char *,
		     struct style_ranges *);
u_int		 format_width(const char *);
char		*format_trim_left(const char *, u_int);
char		*format_trim_right(const char *, u_int);

/* notify.c */
void	notify_hook(struct cmdq_item *, const char *);
void	notify_input(struct window_pane *, const u_char *, size_t);
void	notify_client(const char *, struct client *);
void	notify_session(const char *, struct session *);
void	notify_winlink(const char *, struct winlink *);
void	notify_session_window(const char *, struct session *, struct window *);
void	notify_window(const char *, struct window *);
void	notify_pane(const char *, struct window_pane *);

/* options.c */
struct options	*options_create(struct options *);
void		 options_free(struct options *);
void		 options_set_parent(struct options *, struct options *);
struct options_entry *options_first(struct options *);
struct options_entry *options_next(struct options_entry *);
struct options_entry *options_empty(struct options *,
		     const struct options_table_entry *);
struct options_entry *options_default(struct options *,
		     const struct options_table_entry *);
const char	*options_name(struct options_entry *);
const struct options_table_entry *options_table_entry(struct options_entry *);
struct options_entry *options_get_only(struct options *, const char *);
struct options_entry *options_get(struct options *, const char *);
void		 options_remove(struct options_entry *);
void		 options_array_clear(struct options_entry *);
union options_value *options_array_get(struct options_entry *, u_int);
int		 options_array_set(struct options_entry *, u_int, const char *,
		     int, char **);
int		 options_array_assign(struct options_entry *, const char *,
		     char **);
struct options_array_item *options_array_first(struct options_entry *);
struct options_array_item *options_array_next(struct options_array_item *);
u_int		 options_array_item_index(struct options_array_item *);
union options_value *options_array_item_value(struct options_array_item *);
int		 options_isarray(struct options_entry *);
int		 options_isstring(struct options_entry *);
char		*options_tostring(struct options_entry *, int, int);
char		*options_parse(const char *, int *);
struct options_entry *options_parse_get(struct options *, const char *, int *,
		     int);
char		*options_match(const char *, int *, int *);
struct options_entry *options_match_get(struct options *, const char *, int *,
		     int, int *);
const char	*options_get_string(struct options *, const char *);
long long	 options_get_number(struct options *, const char *);
struct style	*options_get_style(struct options *, const char *);
struct options_entry * printflike(4, 5) options_set_string(struct options *,
		     const char *, int, const char *, ...);
struct options_entry *options_set_number(struct options *, const char *,
		     long long);
struct options_entry *options_set_style(struct options *, const char *, int,
		     const char *);
int		 options_scope_from_name(struct args *, int,
		     const char *, struct cmd_find_state *, struct options **,
		     char **);
int		 options_scope_from_flags(struct args *, int,
		     struct cmd_find_state *, struct options **, char **);

/* options-table.c */
extern const struct options_table_entry options_table[];

/* job.c */
typedef void (*job_update_cb) (struct job *);
typedef void (*job_complete_cb) (struct job *);
typedef void (*job_free_cb) (void *);
#define JOB_NOWAIT 0x1
#define JOB_KEEPWRITE 0x2
#define JOB_PTY 0x4
struct job	*job_run(const char *, struct session *, const char *,
		     job_update_cb, job_complete_cb, job_free_cb, void *, int,
		     int, int);
void		 job_free(struct job *);
void		 job_resize(struct job *, u_int, u_int);
void		 job_check_died(pid_t, int);
int		 job_get_status(struct job *);
void		*job_get_data(struct job *);
struct bufferevent *job_get_event(struct job *);
void		 job_kill_all(void);
int		 job_still_running(void);
void		 job_print_summary(struct cmdq_item *, int);

/* environ.c */
struct environ *environ_create(void);
void	environ_free(struct environ *);
struct environ_entry *environ_first(struct environ *);
struct environ_entry *environ_next(struct environ_entry *);
void	environ_copy(struct environ *, struct environ *);
struct environ_entry *environ_find(struct environ *, const char *);
void printflike(4, 5) environ_set(struct environ *, const char *, int,
	    const char *, ...);
void	environ_clear(struct environ *, const char *);
void	environ_put(struct environ *, const char *, int);
void	environ_unset(struct environ *, const char *);
void	environ_update(struct options *, struct environ *, struct environ *);
void	environ_push(struct environ *);
void printflike(2, 3) environ_log(struct environ *, const char *, ...);
struct environ *environ_for_session(struct session *, int);

/* tty.c */
void	tty_create_log(void);
int	tty_window_bigger(struct tty *);
int	tty_window_offset(struct tty *, u_int *, u_int *, u_int *, u_int *);
void	tty_update_window_offset(struct window *);
void	tty_update_client_offset(struct client *);
void	tty_raw(struct tty *, const char *);
void	tty_attributes(struct tty *, const struct grid_cell *,
	    struct window_pane *);
void	tty_reset(struct tty *);
void	tty_region_off(struct tty *);
void	tty_margin_off(struct tty *);
void	tty_cursor(struct tty *, u_int, u_int);
void	tty_putcode(struct tty *, enum tty_code_code);
void	tty_putcode1(struct tty *, enum tty_code_code, int);
void	tty_putcode2(struct tty *, enum tty_code_code, int, int);
void	tty_putcode3(struct tty *, enum tty_code_code, int, int, int);
void	tty_putcode_ptr1(struct tty *, enum tty_code_code, const void *);
void	tty_putcode_ptr2(struct tty *, enum tty_code_code, const void *,
	    const void *);
void	tty_puts(struct tty *, const char *);
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);
void	tty_resize(struct tty *);
void	tty_set_size(struct tty *, u_int, u_int, u_int, u_int);
void	tty_start_tty(struct tty *);
void	tty_send_requests(struct tty *);
void	tty_stop_tty(struct tty *);
void	tty_set_title(struct tty *, const char *);
void	tty_update_mode(struct tty *, int, struct screen *);
void	tty_draw_line(struct tty *, struct window_pane *, struct screen *,
	    u_int, u_int, u_int, u_int, u_int);
void	tty_sync_start(struct tty *);
void	tty_sync_end(struct tty *);
int	tty_open(struct tty *, char **);
void	tty_close(struct tty *);
void	tty_free(struct tty *);
void	tty_update_features(struct tty *);
void	tty_write(void (*)(struct tty *, const struct tty_ctx *),
	    struct tty_ctx *);
void	tty_cmd_alignmenttest(struct tty *, const struct tty_ctx *);
void	tty_cmd_cell(struct tty *, const struct tty_ctx *);
void	tty_cmd_cells(struct tty *, const struct tty_ctx *);
void	tty_cmd_clearendofline(struct tty *, const struct tty_ctx *);
void	tty_cmd_clearendofscreen(struct tty *, const struct tty_ctx *);
void	tty_cmd_clearline(struct tty *, const struct tty_ctx *);
void	tty_cmd_clearscreen(struct tty *, const struct tty_ctx *);
void	tty_cmd_clearstartofline(struct tty *, const struct tty_ctx *);
void	tty_cmd_clearstartofscreen(struct tty *, const struct tty_ctx *);
void	tty_cmd_deletecharacter(struct tty *, const struct tty_ctx *);
void	tty_cmd_clearcharacter(struct tty *, const struct tty_ctx *);
void	tty_cmd_deleteline(struct tty *, const struct tty_ctx *);
void	tty_cmd_erasecharacter(struct tty *, const struct tty_ctx *);
void	tty_cmd_insertcharacter(struct tty *, const struct tty_ctx *);
void	tty_cmd_insertline(struct tty *, const struct tty_ctx *);
void	tty_cmd_linefeed(struct tty *, const struct tty_ctx *);
void	tty_cmd_scrollup(struct tty *, const struct tty_ctx *);
void	tty_cmd_scrolldown(struct tty *, const struct tty_ctx *);
void	tty_cmd_reverseindex(struct tty *, const struct tty_ctx *);
void	tty_cmd_setselection(struct tty *, const struct tty_ctx *);
void	tty_cmd_rawstring(struct tty *, const struct tty_ctx *);
void	tty_cmd_syncstart(struct tty *, const struct tty_ctx *);

/* tty-term.c */
extern struct tty_terms tty_terms;
u_int		 tty_term_ncodes(void);
void		 tty_term_apply(struct tty_term *, const char *, int);
struct tty_term *tty_term_create(struct tty *, char *, int *, int, char **);
void		 tty_term_free(struct tty_term *);
int		 tty_term_has(struct tty_term *, enum tty_code_code);
const char	*tty_term_string(struct tty_term *, enum tty_code_code);
const char	*tty_term_string1(struct tty_term *, enum tty_code_code, int);
const char	*tty_term_string2(struct tty_term *, enum tty_code_code, int,
		     int);
const char	*tty_term_string3(struct tty_term *, enum tty_code_code, int,
		     int, int);
const char	*tty_term_ptr1(struct tty_term *, enum tty_code_code,
		     const void *);
const char	*tty_term_ptr2(struct tty_term *, enum tty_code_code,
		     const void *, const void *);
int		 tty_term_number(struct tty_term *, enum tty_code_code);
int		 tty_term_flag(struct tty_term *, enum tty_code_code);
const char	*tty_term_describe(struct tty_term *, enum tty_code_code);

/* tty-features.c */
void		 tty_add_features(int *, const char *, const char *);
const char	*tty_get_features(int);
void		 tty_apply_features(struct tty_term *, int);

/* tty-acs.c */
int		 tty_acs_needed(struct tty *);
const char	*tty_acs_get(struct tty *, u_char);

/* tty-keys.c */
void		tty_keys_build(struct tty *);
void		tty_keys_free(struct tty *);
int		tty_keys_next(struct tty *);

/* arguments.c */
void		 args_set(struct args *, u_char, const char *);
struct args	*args_parse(const char *, int, char **);
void		 args_free(struct args *);
char		*args_print(struct args *);
char		*args_escape(const char *);
int		 args_has(struct args *, u_char);
const char	*args_get(struct args *, u_char);
const char	*args_first_value(struct args *, u_char, struct args_value **);
const char	*args_next_value(struct args_value **);
long long	 args_strtonum(struct args *, u_char, long long, long long,
		     char **);
long long	 args_percentage(struct args *, u_char, long long,
		     long long, long long, char **);

/* cmd-find.c */
int		 cmd_find_target(struct cmd_find_state *, struct cmdq_item *,
		     const char *, enum cmd_find_type, int);
struct client	*cmd_find_best_client(struct session *);
struct client	*cmd_find_client(struct cmdq_item *, const char *, int);
void		 cmd_find_clear_state(struct cmd_find_state *, int);
int		 cmd_find_empty_state(struct cmd_find_state *);
int		 cmd_find_valid_state(struct cmd_find_state *);
void		 cmd_find_copy_state(struct cmd_find_state *,
		     struct cmd_find_state *);
void		 cmd_find_from_session(struct cmd_find_state *,
		     struct session *, int);
void		 cmd_find_from_winlink(struct cmd_find_state *,
		     struct winlink *, int);
int		 cmd_find_from_session_window(struct cmd_find_state *,
		     struct session *, struct window *, int);
int		 cmd_find_from_window(struct cmd_find_state *, struct window *,
		     int);
void		 cmd_find_from_winlink_pane(struct cmd_find_state *,
		     struct winlink *, struct window_pane *, int);
int		 cmd_find_from_pane(struct cmd_find_state *,
		     struct window_pane *, int);
int		 cmd_find_from_client(struct cmd_find_state *, struct client *,
		     int);
int		 cmd_find_from_mouse(struct cmd_find_state *,
		     struct mouse_event *, int);
int		 cmd_find_from_nothing(struct cmd_find_state *, int);

/* cmd.c */
extern const struct cmd_entry *cmd_table[];
void printflike(3, 4) cmd_log_argv(int, char **, const char *, ...);
void		 cmd_prepend_argv(int *, char ***, char *);
void		 cmd_append_argv(int *, char ***, char *);
int		 cmd_pack_argv(int, char **, char *, size_t);
int		 cmd_unpack_argv(char *, size_t, int, char ***);
char	       **cmd_copy_argv(int, char **);
void		 cmd_free_argv(int, char **);
char		*cmd_stringify_argv(int, char **);
char		*cmd_get_alias(const char *);
const struct cmd_entry *cmd_get_entry(struct cmd *);
struct args	*cmd_get_args(struct cmd *);
u_int		 cmd_get_group(struct cmd *);
void		 cmd_get_source(struct cmd *, const char **, u_int *);
struct cmd	*cmd_parse(int, char **, const char *, u_int, char **);
void		 cmd_free(struct cmd *);
char		*cmd_print(struct cmd *);
struct cmd_list	*cmd_list_new(void);
void		 cmd_list_append(struct cmd_list *, struct cmd *);
void		 cmd_list_move(struct cmd_list *, struct cmd_list *);
void		 cmd_list_free(struct cmd_list *);
char		*cmd_list_print(struct cmd_list *, int);
struct cmd	*cmd_list_first(struct cmd_list *);
struct cmd	*cmd_list_next(struct cmd *);
int		 cmd_list_all_have(struct cmd_list *, int);
int		 cmd_list_any_have(struct cmd_list *, int);
int		 cmd_mouse_at(struct window_pane *, struct mouse_event *,
		     u_int *, u_int *, int);
struct winlink	*cmd_mouse_window(struct mouse_event *, struct session **);
struct window_pane *cmd_mouse_pane(struct mouse_event *, struct session **,
		     struct winlink **);
char		*cmd_template_replace(const char *, const char *, int);

/* cmd-attach-session.c */
enum cmd_retval	 cmd_attach_session(struct cmdq_item *, const char *, int, int,
		     int, const char *, int);

/* cmd-parse.c */
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 *);
enum cmd_parse_status cmd_parse_and_insert(const char *,
		     struct cmd_parse_input *, struct cmdq_item *,
		     struct cmdq_state *, char **);
enum cmd_parse_status cmd_parse_and_append(const char *,
		     struct cmd_parse_input *, struct client *,
		     struct cmdq_state *, char **);
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 *);

/* cmd-queue.c */
struct cmdq_state *cmdq_new_state(struct cmd_find_state *, struct key_event *,
		     int);
struct cmdq_state *cmdq_link_state(struct cmdq_state *);
struct cmdq_state *cmdq_copy_state(struct cmdq_state *);
void		  cmdq_free_state(struct cmdq_state *);
void printflike(3, 4) cmdq_add_format(struct cmdq_state *, const char *,
		     const char *, ...);
void		  cmdq_merge_formats(struct cmdq_item *, struct format_tree *);
struct cmdq_list *cmdq_new(void);
void cmdq_free(struct cmdq_list *);
const char	 *cmdq_get_name(struct cmdq_item *);
struct client	 *cmdq_get_client(struct cmdq_item *);
struct client	 *cmdq_get_target_client(struct cmdq_item *);
struct cmdq_state *cmdq_get_state(struct cmdq_item *);
struct cmd_find_state *cmdq_get_target(struct cmdq_item *);
struct cmd_find_state *cmdq_get_source(struct cmdq_item *);
struct key_event *cmdq_get_event(struct cmdq_item *);
struct cmd_find_state *cmdq_get_current(struct cmdq_item *);
int		  cmdq_get_flags(struct cmdq_item *);
struct cmdq_item *cmdq_get_command(struct cmd_list *, struct cmdq_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 *);
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 *);
u_int		 cmdq_next(struct client *);
struct cmdq_item *cmdq_running(struct client *);
void		 cmdq_guard(struct cmdq_item *, const char *, int);
void printflike(2, 3) cmdq_print(struct cmdq_item *, const char *, ...);
void printflike(2, 3) cmdq_error(struct cmdq_item *, const char *, ...);

/* cmd-wait-for.c */
void	cmd_wait_for_flush(void);

/* client.c */
int	client_main(struct event_base *, int, char **, int, int);

/* key-bindings.c */
struct key_table *key_bindings_get_table(const char *, int);
struct key_table *key_bindings_first_table(void);
struct key_table *key_bindings_next_table(struct key_table *);
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, 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);
struct cmdq_item *key_bindings_dispatch(struct key_binding *,
	     struct cmdq_item *, struct client *, struct key_event *,
	     struct cmd_find_state *);

/* key-string.c */
key_code	 key_string_lookup_string(const char *);
const char	*key_string_lookup_key(key_code);

/* alerts.c */
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;
extern struct cmd_find_state marked_pane;
void	 server_set_marked(struct session *, struct winlink *,
	     struct window_pane *);
void	 server_clear_marked(void);
int	 server_is_marked(struct session *, struct winlink *,
	     struct window_pane *);
int	 server_check_marked(void);
int	 server_start(struct tmuxproc *, int, struct event_base *, int, char *);
void	 server_update_socket(void);
void	 server_add_accept(int);

/* server-client.c */
u_int	 server_client_how_many(void);
void	 server_client_set_overlay(struct client *, u_int, overlay_check_cb,
	     overlay_mode_cb, overlay_draw_cb, overlay_key_cb,
	     overlay_free_cb, void *);
void	 server_client_clear_overlay(struct client *);
void	 server_client_set_key_table(struct client *, const char *);
const char *server_client_get_key_table(struct client *);
int	 server_client_check_nested(struct client *);
int	 server_client_handle_key(struct client *, struct key_event *);
struct client *server_client_create(int);
int	 server_client_open(struct client *, char **);
void	 server_client_unref(struct client *);
void	 server_client_lost(struct client *);
void	 server_client_suspend(struct client *);
void	 server_client_detach(struct client *, enum msgtype);
void	 server_client_exec(struct client *, const char *);
void	 server_client_loop(void);
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 *,
	     ...);
const char *server_client_get_cwd(struct client *, struct session *);

/* server-fn.c */
void	 server_redraw_client(struct client *);
void	 server_status_client(struct client *);
void	 server_redraw_session(struct session *);
void	 server_redraw_session_group(struct session *);
void	 server_status_session(struct session *);
void	 server_status_session_group(struct session *);
void	 server_redraw_window(struct window *);
void	 server_redraw_window_borders(struct window *);
void	 server_status_window(struct window *);
void	 server_lock(void);
void	 server_lock_session(struct session *);
void	 server_lock_client(struct client *);
void	 server_kill_pane(struct window_pane *);
void	 server_kill_window(struct window *);
int	 server_link_window(struct session *,
	     struct winlink *, struct session *, int, int, int, char **);
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);
void	 server_unzoom_window(struct window *);

/* status.c */
void	 status_timer_start(struct client *);
void	 status_timer_start_all(void);
void	 status_update_cache(struct session *);
int	 status_at_line(struct client *);
u_int	 status_line_size(struct client *);
struct style_range *status_get_range(struct client *, u_int, u_int);
void	 status_init(struct client *);
void	 status_free(struct client *);
int	 status_redraw(struct client *);
void printflike(2, 3) status_message_set(struct client *, const char *, ...);
void	 status_message_clear(struct client *);
int	 status_message_redraw(struct client *);
void	 status_prompt_set(struct client *, const char *, const char *,
	     prompt_input_cb, prompt_free_cb, void *, int);
void	 status_prompt_clear(struct client *);
int	 status_prompt_redraw(struct client *);
int	 status_prompt_key(struct client *, key_code);
void	 status_prompt_update(struct client *, const char *, const char *);
void	 status_prompt_load_history(void);
void	 status_prompt_save_history(void);

/* resize.c */
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 */
struct input_ctx *input_init(struct window_pane *, struct bufferevent *);
void	 input_free(struct input_ctx *);
void	 input_reset(struct input_ctx *, int);
struct evbuffer *input_pending(struct input_ctx *);
void	 input_parse_pane(struct window_pane *);
void	 input_parse_buffer(struct window_pane *, u_char *, size_t);
void	 input_parse_screen(struct input_ctx *, struct screen *, u_char *,
	     size_t);

/* input-key.c */
int	 input_key_pane(struct window_pane *, key_code, struct mouse_event *);
int	 input_key(struct window_pane *, struct screen *, struct bufferevent *,
	     key_code);
int	 input_key_get_mouse(struct screen *, struct mouse_event *, u_int,
	     u_int, const char **, size_t *);

/* xterm-keys.c */
char	*xterm_keys_lookup(key_code);
int	 xterm_keys_find(const char *, size_t, size_t *, key_code *);

/* colour.c */
int	 colour_find_rgb(u_char, u_char, u_char);
int	 colour_join_rgb(u_char, u_char, u_char);
void	 colour_split_rgb(int, u_char *, u_char *, u_char *);
const char *colour_tostring(int);
int	 colour_fromstring(const char *s);
int	 colour_256toRGB(int);
int	 colour_256to16(int);

/* attributes.c */
const char *attributes_tostring(int);
int	 attributes_fromstring(const char *);

/* grid.c */
extern const struct grid_cell grid_default_cell;
void	 grid_empty_line(struct grid *, u_int, u_int);
int	 grid_cells_equal(const struct grid_cell *, const struct grid_cell *);
struct grid *grid_create(u_int, u_int, u_int);
void	 grid_destroy(struct grid *);
int	 grid_compare(struct grid *, struct grid *);
void	 grid_collect_history(struct grid *);
void	 grid_remove_history(struct grid *, u_int );
void	 grid_scroll_history(struct grid *, u_int);
void	 grid_scroll_history_region(struct grid *, u_int, u_int, u_int);
void	 grid_clear_history(struct grid *);
const struct grid_line *grid_peek_line(struct grid *, u_int);
void	 grid_get_cell(struct grid *, u_int, u_int, struct grid_cell *);
void	 grid_set_cell(struct grid *, u_int, u_int, const struct grid_cell *);
void	 grid_set_cells(struct grid *, u_int, u_int, const struct grid_cell *,
	     const char *, size_t);
struct grid_line *grid_get_line(struct grid *, u_int);
void	 grid_adjust_lines(struct grid *, u_int);
void	 grid_clear(struct grid *, u_int, u_int, u_int, u_int, u_int);
void	 grid_clear_lines(struct grid *, u_int, u_int, u_int);
void	 grid_move_lines(struct grid *, u_int, u_int, u_int, u_int);
void	 grid_move_cells(struct grid *, u_int, u_int, u_int, u_int, u_int);
char	*grid_string_cells(struct grid *, u_int, u_int, u_int,
	     struct grid_cell **, int, int, int);
void	 grid_duplicate_lines(struct grid *, u_int, struct grid *, u_int,
	     u_int);
void	 grid_reflow(struct grid *, u_int);
void	 grid_wrap_position(struct grid *, u_int, u_int, u_int *, u_int *);
void	 grid_unwrap_position(struct grid *, u_int *, u_int *, u_int, u_int);
u_int	 grid_line_length(struct grid *, u_int);

/* grid-view.c */
void	 grid_view_get_cell(struct grid *, u_int, u_int, struct grid_cell *);
void	 grid_view_set_cell(struct grid *, u_int, u_int,
	     const struct grid_cell *);
void	 grid_view_set_cells(struct grid *, u_int, u_int,
	     const struct grid_cell *, const char *, size_t);
void	 grid_view_clear_history(struct grid *, u_int);
void	 grid_view_clear(struct grid *, u_int, u_int, u_int, u_int, u_int);
void	 grid_view_scroll_region_up(struct grid *, u_int, u_int, u_int);
void	 grid_view_scroll_region_down(struct grid *, u_int, u_int, u_int);
void	 grid_view_insert_lines(struct grid *, u_int, u_int, u_int);
void	 grid_view_insert_lines_region(struct grid *, u_int, u_int, u_int,
	     u_int);
void	 grid_view_delete_lines(struct grid *, u_int, u_int, u_int);
void	 grid_view_delete_lines_region(struct grid *, u_int, u_int, u_int,
	     u_int);
void	 grid_view_insert_cells(struct grid *, u_int, u_int, u_int, u_int);
void	 grid_view_delete_cells(struct grid *, u_int, u_int, u_int, u_int);
char	*grid_view_string_cells(struct grid *, u_int, u_int, u_int);

/* screen-write.c */
void	 screen_write_make_list(struct screen *);
void	 screen_write_free_list(struct screen *);
void	 screen_write_start(struct screen_write_ctx *, struct window_pane *,
	     struct screen *);
void	 screen_write_stop(struct screen_write_ctx *);
void	 screen_write_reset(struct screen_write_ctx *);
size_t printflike(1, 2) screen_write_strlen(const char *, ...);
void printflike(3, 4) screen_write_puts(struct screen_write_ctx *,
	     const struct grid_cell *, const char *, ...);
void printflike(4, 5) screen_write_nputs(struct screen_write_ctx *,
	     ssize_t, const struct grid_cell *, const char *, ...);
void	 screen_write_vnputs(struct screen_write_ctx *, ssize_t,
	     const struct grid_cell *, const char *, va_list);
void	 screen_write_putc(struct screen_write_ctx *, const struct grid_cell *,
	     u_char);
void	 screen_write_copy(struct screen_write_ctx *, struct screen *, u_int,
	     u_int, u_int, u_int, bitstr_t *, const struct grid_cell *);
void	 screen_write_fast_copy(struct screen_write_ctx *, struct screen *,
	     u_int, u_int, u_int, u_int);
void	 screen_write_hline(struct screen_write_ctx *, u_int, int, int);
void	 screen_write_vline(struct screen_write_ctx *, u_int, int, int);
void	 screen_write_menu(struct screen_write_ctx *, struct menu *, int,
	     const struct grid_cell *);
void	 screen_write_box(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_preview(struct screen_write_ctx *, struct screen *, u_int,
	     u_int);
void	 screen_write_backspace(struct screen_write_ctx *);
void	 screen_write_mode_set(struct screen_write_ctx *, int);
void	 screen_write_mode_clear(struct screen_write_ctx *, int);
void	 screen_write_cursorup(struct screen_write_ctx *, u_int);
void	 screen_write_cursordown(struct screen_write_ctx *, u_int);
void	 screen_write_cursorright(struct screen_write_ctx *, u_int);
void	 screen_write_cursorleft(struct screen_write_ctx *, u_int);
void	 screen_write_alignmenttest(struct screen_write_ctx *);
void	 screen_write_insertcharacter(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_deletecharacter(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_clearcharacter(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_insertline(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_deleteline(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_clearline(struct screen_write_ctx *, u_int);
void	 screen_write_clearendofline(struct screen_write_ctx *, u_int);
void	 screen_write_clearstartofline(struct screen_write_ctx *, u_int);
void	 screen_write_cursormove(struct screen_write_ctx *, int, int, int);
void	 screen_write_reverseindex(struct screen_write_ctx *, u_int);
void	 screen_write_scrollregion(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_linefeed(struct screen_write_ctx *, int, u_int);
void	 screen_write_scrollup(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_scrolldown(struct screen_write_ctx *, u_int, u_int);
void	 screen_write_carriagereturn(struct screen_write_ctx *);
void	 screen_write_clearendofscreen(struct screen_write_ctx *, u_int);
void	 screen_write_clearstartofscreen(struct screen_write_ctx *, u_int);
void	 screen_write_clearscreen(struct screen_write_ctx *, u_int);
void	 screen_write_clearhistory(struct screen_write_ctx *);
void	 screen_write_collect_end(struct screen_write_ctx *);
void	 screen_write_collect_add(struct screen_write_ctx *,
	     const struct grid_cell *);
void	 screen_write_cell(struct screen_write_ctx *, const struct grid_cell *);
void	 screen_write_setselection(struct screen_write_ctx *, u_char *, u_int);
void	 screen_write_rawstring(struct screen_write_ctx *, u_char *, u_int);

/* screen-redraw.c */
void	 screen_redraw_screen(struct client *);
void	 screen_redraw_pane(struct client *, struct window_pane *);

/* screen.c */
void	 screen_init(struct screen *, u_int, u_int, u_int);
void	 screen_reinit(struct screen *);
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 *);
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);
void	 screen_resize_cursor(struct screen *, u_int, u_int, int, int, u_int *,
	     u_int *);
void	 screen_set_selection(struct screen *, u_int, u_int, u_int, u_int,
	     u_int, int, struct grid_cell *);
void	 screen_clear_selection(struct screen *);
void	 screen_hide_selection(struct screen *);
int	 screen_check_selection(struct screen *, u_int, u_int);
void	 screen_select_cell(struct screen *, struct grid_cell *,
	     const struct grid_cell *);
void	 screen_alternate_on(struct screen *, struct grid_cell *, int);
void	 screen_alternate_off(struct screen *, struct grid_cell *, int);

/* window.c */
extern struct windows windows;
extern struct window_pane_tree all_window_panes;
extern const struct window_mode *all_window_modes[];
int		 window_cmp(struct window *, struct window *);
RB_PROTOTYPE(windows, window, entry, window_cmp);
int		 winlink_cmp(struct winlink *, struct winlink *);
RB_PROTOTYPE(winlinks, winlink, entry, winlink_cmp);
int		 window_pane_cmp(struct window_pane *, struct window_pane *);
RB_PROTOTYPE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
struct winlink	*winlink_find_by_index(struct winlinks *, int);
struct winlink	*winlink_find_by_window(struct winlinks *, struct window *);
struct winlink	*winlink_find_by_window_id(struct winlinks *, u_int);
u_int		 winlink_count(struct winlinks *);
struct winlink	*winlink_add(struct winlinks *, int);
void		 winlink_set_window(struct winlink *, struct window *);
void		 winlink_remove(struct winlinks *, struct winlink *);
struct winlink	*winlink_next(struct winlink *);
struct winlink	*winlink_previous(struct winlink *);
struct winlink	*winlink_next_by_number(struct winlink *, struct session *,
		     int);
struct winlink	*winlink_previous_by_number(struct winlink *, struct session *,
		     int);
void		 winlink_stack_push(struct winlink_stack *, struct winlink *);
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, 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 *);
int		 window_has_pane(struct window *, struct window_pane *);
int		 window_set_active_pane(struct window *, struct window_pane *,
		     int);
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, 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);
struct window_pane *window_pane_next_by_number(struct window *,
			struct window_pane *, u_int);
struct window_pane *window_pane_previous_by_number(struct window *,
			struct window_pane *, u_int);
int		 window_pane_index(struct window_pane *, u_int *);
u_int		 window_count_panes(struct window *);
void		 window_destroy_panes(struct window *);
struct window_pane *window_pane_find_by_id_str(const char *);
struct window_pane *window_pane_find_by_id(u_int);
int		 window_pane_destroy_ready(struct window_pane *);
void		 window_pane_resize(struct window_pane *, u_int, u_int);
void		 window_pane_alternate_on(struct window_pane *,
		     struct grid_cell *, int);
void		 window_pane_alternate_off(struct window_pane *,
		     struct grid_cell *, int);
void		 window_pane_set_palette(struct window_pane *, u_int, int);
void		 window_pane_unset_palette(struct window_pane *, u_int);
void		 window_pane_reset_palette(struct window_pane *);
int		 window_pane_get_palette(struct window_pane *, int);
int		 window_pane_set_mode(struct window_pane *,
		     struct window_pane *, const struct window_mode *,
		     struct cmd_find_state *, struct args *);
void		 window_pane_reset_mode(struct window_pane *);
void		 window_pane_reset_mode_all(struct window_pane *);
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 *);
u_int		 window_pane_search(struct window_pane *, const char *, int,
		     int);
const char	*window_printable_flags(struct winlink *);
struct window_pane *window_pane_find_up(struct window_pane *);
struct window_pane *window_pane_find_down(struct window_pane *);
struct window_pane *window_pane_find_left(struct window_pane *);
struct window_pane *window_pane_find_right(struct window_pane *);
void		 window_set_name(struct window *, const char *);
void		 window_add_ref(struct window *, const char *);
void		 window_remove_ref(struct window *, const char *);
void		 winlink_clear_flags(struct winlink *);
int		 winlink_shuffle_up(struct session *, struct winlink *);
int		 window_pane_start_input(struct window_pane *,
		     struct cmdq_item *, char **);

/* layout.c */
u_int		 layout_count_cells(struct layout_cell *);
struct layout_cell *layout_create_cell(struct layout_cell *);
void		 layout_free_cell(struct layout_cell *);
void		 layout_print_cell(struct layout_cell *, const char *, u_int);
void		 layout_destroy_cell(struct window *, struct layout_cell *,
		     struct layout_cell **);
void		 layout_resize_layout(struct window *, struct layout_cell *,
		     enum layout_type, int, int);
struct layout_cell *layout_search_by_border(struct layout_cell *, u_int, u_int);
void		 layout_set_size(struct layout_cell *, u_int, u_int, u_int,
		     u_int);
void		 layout_make_leaf(struct layout_cell *, struct window_pane *);
void		 layout_make_node(struct layout_cell *, enum layout_type);
void		 layout_fix_offsets(struct window *);
void		 layout_fix_panes(struct window *);
void		 layout_resize_adjust(struct window *, struct layout_cell *,
		     enum layout_type, int);
void		 layout_init(struct window *, struct window_pane *);
void		 layout_free(struct window *);
void		 layout_resize(struct window *, u_int, u_int);
void		 layout_resize_pane(struct window_pane *, enum layout_type,
		     int, int);
void		 layout_resize_pane_to(struct window_pane *, enum layout_type,
		     u_int);
void		 layout_assign_pane(struct layout_cell *, struct window_pane *);
struct layout_cell *layout_split_pane(struct window_pane *, enum layout_type,
		     int, int);
void		 layout_close_pane(struct window_pane *);
int		 layout_spread_cell(struct window *, struct layout_cell *);
void		 layout_spread_out(struct window_pane *);

/* layout-custom.c */
char		*layout_dump(struct layout_cell *);
int		 layout_parse(struct window *, const char *);

/* layout-set.c */
int		 layout_set_lookup(const char *);
u_int		 layout_set_select(struct window *, u_int);
u_int		 layout_set_next(struct window *);
u_int		 layout_set_previous(struct window *);

/* mode-tree.c */
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 *);
typedef void (*mode_tree_menu_cb)(void *, struct client *, key_code);
typedef void (*mode_tree_each_cb)(void *, void *, struct client *, key_code);
u_int	 mode_tree_count_tagged(struct mode_tree_data *);
void	*mode_tree_get_current(struct mode_tree_data *);
void	 mode_tree_expand_current(struct mode_tree_data *);
void	 mode_tree_set_current(struct mode_tree_data *, uint64_t);
void	 mode_tree_each_tagged(struct mode_tree_data *, mode_tree_each_cb,
	     struct client *, key_code, int);
void	 mode_tree_down(struct mode_tree_data *, int);
struct mode_tree_data *mode_tree_start(struct window_pane *, struct args *,
	     mode_tree_build_cb, mode_tree_draw_cb, mode_tree_search_cb,
	     mode_tree_menu_cb, void *, const struct menu_item *, const char **,
	     u_int, struct screen **);
void	 mode_tree_zoom(struct mode_tree_data *, struct args *);
void	 mode_tree_build(struct mode_tree_data *);
void	 mode_tree_free(struct mode_tree_data *);
void	 mode_tree_resize(struct mode_tree_data *, u_int, u_int);
struct mode_tree_item *mode_tree_add(struct mode_tree_data *,
	     struct mode_tree_item *, void *, uint64_t, const char *,
	     const char *, int);
void	 mode_tree_remove(struct mode_tree_data *, struct mode_tree_item *);
void	 mode_tree_draw(struct mode_tree_data *);
int	 mode_tree_key(struct mode_tree_data *, struct client *, key_code *,
	     struct mouse_event *, u_int *, u_int *);
void	 mode_tree_run_command(struct client *, struct cmd_find_state *,
	     const char *, const char *);

/* window-buffer.c */
extern const struct window_mode window_buffer_mode;

/* window-tree.c */
extern const struct window_mode window_tree_mode;

/* window-clock.c */
extern const struct window_mode window_clock_mode;
extern const char window_clock_table[14][5][5];

/* window-client.c */
extern const struct window_mode window_client_mode;

/* window-copy.c */
extern const struct window_mode window_copy_mode;
extern const struct window_mode window_view_mode;
void printflike(2, 3) window_copy_add(struct window_pane *, const char *, ...);
void		 window_copy_vadd(struct window_pane *, const char *, va_list);
void		 window_copy_pageup(struct window_pane *, int);
void		 window_copy_start_drag(struct client *, struct mouse_event *);
char		*window_copy_get_word(struct window_pane *, u_int, u_int);
char		*window_copy_get_line(struct window_pane *, u_int);

/* names.c */
void	 check_window_name(struct window *);
char	*default_window_name(struct window *);
char	*parse_window_name(const char *);

/* control.c */
void	control_start(struct client *);
void printflike(2, 3) control_write(struct client *, const char *, ...);

/* control-notify.c */
void	control_notify_input(struct client *, struct window_pane *,
	    const u_char *, size_t);
void	control_notify_pane_mode_changed(int);
void	control_notify_window_layout_changed(struct window *);
void	control_notify_window_pane_changed(struct window *);
void	control_notify_window_unlinked(struct session *, struct window *);
void	control_notify_window_linked(struct session *, struct window *);
void	control_notify_window_renamed(struct window *);
void	control_notify_client_session_changed(struct client *);
void	control_notify_session_renamed(struct session *);
void	control_notify_session_created(struct session *);
void	control_notify_session_closed(struct session *);
void	control_notify_session_window_changed(struct session *);

/* session.c */
extern struct sessions sessions;
int	session_cmp(struct session *, struct session *);
RB_PROTOTYPE(sessions, session, entry, session_cmp);
int		 session_alive(struct session *);
struct session	*session_find(const char *);
struct session	*session_find_by_id_str(const char *);
struct session	*session_find_by_id(u_int);
struct session	*session_create(const char *, const char *, const char *,
		     struct environ *, struct options *, struct termios *);
void		 session_destroy(struct session *, int,  const char *);
void		 session_add_ref(struct session *, const char *);
void		 session_remove_ref(struct session *, const char *);
int		 session_check_name(const char *);
void		 session_update_activity(struct session *, struct timeval *);
struct session	*session_next_session(struct session *);
struct session	*session_previous_session(struct session *);
struct winlink	*session_new(struct session *, const char *, int, char **,
		     const char *, const char *, int, char **);
struct winlink	*session_attach(struct session *, struct window *, int,
		     char **);
int		 session_detach(struct session *, struct winlink *);
int		 session_has(struct session *, struct window *);
int		 session_is_linked(struct session *, struct window *);
int		 session_next(struct session *, int);
int		 session_previous(struct session *, int);
int		 session_select(struct session *, int);
int		 session_last(struct session *);
int		 session_set_current(struct session *, struct winlink *);
struct session_group *session_group_contains(struct session *);
struct session_group *session_group_find(const char *);
struct session_group *session_group_new(const char *);
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 */
void		 utf8_set(struct utf8_data *, u_char);
void		 utf8_copy(struct utf8_data *, const struct utf8_data *);
enum utf8_state	 utf8_open(struct utf8_data *, u_char);
enum utf8_state	 utf8_append(struct utf8_data *, u_char);
enum utf8_state	 utf8_combine(const struct utf8_data *, wchar_t *);
enum utf8_state	 utf8_split(wchar_t, struct utf8_data *);
int		 utf8_isvalid(const char *);
int		 utf8_strvis(char *, const char *, size_t, int);
int		 utf8_stravis(char **, const char *, int);
char		*utf8_sanitize(const char *);
size_t		 utf8_strlen(const struct utf8_data *);
u_int		 utf8_strwidth(const struct utf8_data *, ssize_t);
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 *);

/* procname.c */
char   *get_proc_name(int, char *);
char   *get_proc_cwd(int);

/* log.c */
void	log_add_level(void);
int	log_get_level(void);
void	log_open(const char *);
void	log_toggle(const char *);
void	log_close(void);
void printflike(1, 2) log_debug(const char *, ...);
__dead void printflike(1, 2) fatal(const char *, ...);
__dead void printflike(1, 2) fatalx(const char *, ...);

/* menu.c */
#define MENU_NOMOUSE 0x1
struct menu	*menu_create(const char *);
void		 menu_add_items(struct menu *, const struct menu_item *,
		    struct cmdq_item *, struct client *,
		    struct cmd_find_state *);
void 		 menu_add_item(struct menu *, const struct menu_item *,
		    struct cmdq_item *, struct client *,
		    struct cmd_find_state *);
void		 menu_free(struct menu *);
int		 menu_display(struct menu *, int, struct cmdq_item *, u_int,
		    u_int, struct client *, struct cmd_find_state *,
		    menu_choice_cb, void *);

/* popup.c */
#define POPUP_WRITEKEYS 0x1
#define POPUP_CLOSEEXIT 0x2
#define POPUP_CLOSEEXITZERO 0x4
u_int		 popup_width(struct cmdq_item *, u_int, const char **,
		    struct client *, struct cmd_find_state *);
u_int		 popup_height(u_int, const char **);
int		 popup_display(int, struct cmdq_item *, u_int, u_int, u_int,
		    u_int, u_int, const char **, const char *, const char *,
		    const char *, struct client *, struct cmd_find_state *);

/* style.c */
int		 style_parse(struct style *,const struct grid_cell *,
		     const char *);
const char	*style_tostring(struct style *);
void		 style_apply(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 *);
int		 style_is_default(struct style *);

/* spawn.c */
struct winlink	*spawn_window(struct spawn_context *, char **);
struct window_pane *spawn_pane(struct spawn_context *, char **);

/* regsub.c */
char		*regsub(const char *, const char *, const char *, int);

#endif /* TMUX_H */