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Fix note for "previous-window" default key binding, from Sebastian
Falbesoner.

/* $OpenBSD: key-bindings.c,v 1.132 2020/10/13 10:15:23 nicm Exp $ */

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

#include <sys/types.h>

#include <ctype.h>
#include <stdlib.h>
#include <string.h>

#include "tmux.h"

#define DEFAULT_SESSION_MENU \
	" 'Next' 'n' {switch-client -n}" \
	" 'Previous' 'p' {switch-client -p}" \
	" ''" \
	" 'Renumber' 'N' {move-window -r}" \
	" 'Rename' 'n' {command-prompt -I \"#S\" \"rename-session -- '%%'\"}" \
	" ''" \
	" 'New Session' 's' {new-session}" \
	" 'New Window' 'w' {new-window}"
#define DEFAULT_WINDOW_MENU \
	" '#{?#{>:#{session_windows},1},,-}Swap Left' 'l' {swap-window -t:-1}" \
	" '#{?#{>:#{session_windows},1},,-}Swap Right' 'r' {swap-window -t:+1}" \
	" '#{?pane_marked_set,,-}Swap Marked' 's' {swap-window}" \
	" ''" \
	" 'Kill' 'X' {kill-window}" \
	" 'Respawn' 'R' {respawn-window -k}" \
	" '#{?pane_marked,Unmark,Mark}' 'm' {select-pane -m}" \
	" 'Rename' 'n' {command-prompt -I \"#W\" \"rename-window -- '%%'\"}" \
	" ''" \
	" 'New After' 'w' {new-window -a}" \
	" 'New At End' 'W' {new-window}"
#define DEFAULT_PANE_MENU \
	" '#{?#{m/r:(copy|view)-mode,#{pane_mode}},Go To Top,}' '<' {send -X history-top}" \
	" '#{?#{m/r:(copy|view)-mode,#{pane_mode}},Go To Bottom,}' '>' {send -X history-bottom}" \
	" ''" \
	" '#{?mouse_word,Search For #[underscore]#{=/9/...:mouse_word},}' 'C-r' {if -F '#{?#{m/r:(copy|view)-mode,#{pane_mode}},0,1}' 'copy-mode -t='; send -Xt= search-backward \"#{q:mouse_word}\"}" \
	" '#{?mouse_word,Type #[underscore]#{=/9/...:mouse_word},}' 'C-y' {copy-mode -q; send-keys -l -- \"#{q:mouse_word}\"}" \
	" '#{?mouse_word,Copy #[underscore]#{=/9/...:mouse_word},}' 'c' {copy-mode -q; set-buffer -- \"#{q:mouse_word}\"}" \
	" '#{?mouse_line,Copy Line,}' 'l' {copy-mode -q; set-buffer -- \"#{q:mouse_line}\"}" \
	" ''" \
	" 'Horizontal Split' 'h' {split-window -h}" \
	" 'Vertical Split' 'v' {split-window -v}" \
	" ''" \
	" '#{?#{>:#{window_panes},1},,-}Swap Up' 'u' {swap-pane -U}" \
	" '#{?#{>:#{window_panes},1},,-}Swap Down' 'd' {swap-pane -D}" \
	" '#{?pane_marked_set,,-}Swap Marked' 's' {swap-pane}" \
	" ''" \
	" 'Kill' 'X' {kill-pane}" \
	" 'Respawn' 'R' {respawn-pane -k}" \
	" '#{?pane_marked,Unmark,Mark}' 'm' {select-pane -m}" \
	" '#{?#{>:#{window_panes},1},,-}#{?window_zoomed_flag,Unzoom,Zoom}' 'z' {resize-pane -Z}"

static int key_bindings_cmp(struct key_binding *, struct key_binding *);
RB_GENERATE_STATIC(key_bindings, key_binding, entry, key_bindings_cmp);
static int key_table_cmp(struct key_table *, struct key_table *);
RB_GENERATE_STATIC(key_tables, key_table, entry, key_table_cmp);
static struct key_tables key_tables = RB_INITIALIZER(&key_tables);

static int
key_table_cmp(struct key_table *table1, struct key_table *table2)
{
	return (strcmp(table1->name, table2->name));
}

static int
key_bindings_cmp(struct key_binding *bd1, struct key_binding *bd2)
{
	if (bd1->key < bd2->key)
		return (-1);
	if (bd1->key > bd2->key)
		return (1);
	return (0);
}

static void
key_bindings_free(struct key_binding *bd)
{
	cmd_list_free(bd->cmdlist);
	free((void *)bd->note);
	free(bd);
}

struct key_table *
key_bindings_get_table(const char *name, int create)
{
	struct key_table	table_find, *table;

	table_find.name = name;
	table = RB_FIND(key_tables, &key_tables, &table_find);
	if (table != NULL || !create)
		return (table);

	table = xmalloc(sizeof *table);
	table->name = xstrdup(name);
	RB_INIT(&table->key_bindings);
	RB_INIT(&table->default_key_bindings);

	table->references = 1; /* one reference in key_tables */
	RB_INSERT(key_tables, &key_tables, table);

	return (table);
}

struct key_table *
key_bindings_first_table(void)
{
	return (RB_MIN(key_tables, &key_tables));
}

struct key_table *
key_bindings_next_table(struct key_table *table)
{
	return (RB_NEXT(key_tables, &key_tables, table));
}

void
key_bindings_unref_table(struct key_table *table)
{
	struct key_binding	*bd;
	struct key_binding	*bd1;

	if (--table->references != 0)
		return;

	RB_FOREACH_SAFE(bd, key_bindings, &table->key_bindings, bd1) {
		RB_REMOVE(key_bindings, &table->key_bindings, bd);
		key_bindings_free(bd);
	}
	RB_FOREACH_SAFE(bd, key_bindings, &table->default_key_bindings, bd1) {
		RB_REMOVE(key_bindings, &table->default_key_bindings, bd);
		key_bindings_free(bd);
	}

	free((void *)table->name);
	free(table);
}

struct key_binding *
key_bindings_get(struct key_table *table, key_code key)
{
	struct key_binding	bd;

	bd.key = key;
	return (RB_FIND(key_bindings, &table->key_bindings, &bd));
}

struct key_binding *
key_bindings_get_default(struct key_table *table, key_code key)
{
	struct key_binding	bd;

	bd.key = key;
	return (RB_FIND(key_bindings, &table->default_key_bindings, &bd));
}

struct key_binding *
key_bindings_first(struct key_table *table)
{
	return (RB_MIN(key_bindings, &table->key_bindings));
}

struct key_binding *
key_bindings_next(__unused struct key_table *table, struct key_binding *bd)
{
	return (RB_NEXT(key_bindings, &table->key_bindings, bd));
}

void
key_bindings_add(const char *name, key_code key, const char *note, int repeat,
    struct cmd_list *cmdlist)
{
	struct key_table	*table;
	struct key_binding	*bd;

	table = key_bindings_get_table(name, 1);

	bd = key_bindings_get(table, key & ~KEYC_MASK_FLAGS);
	if (cmdlist == NULL) {
		if (bd != NULL) {
			free((void *)bd->note);
			if (note != NULL)
				bd->note = xstrdup(note);
			else
				bd->note = NULL;
		}
		return;
	}
	if (bd != NULL) {
		RB_REMOVE(key_bindings, &table->key_bindings, bd);
		key_bindings_free(bd);
	}

	bd = xcalloc(1, sizeof *bd);
	bd->key = (key & ~KEYC_MASK_FLAGS);
	if (note != NULL)
		bd->note = xstrdup(note);
	RB_INSERT(key_bindings, &table->key_bindings, bd);

	if (repeat)
		bd->flags |= KEY_BINDING_REPEAT;
	bd->cmdlist = cmdlist;
}

void
key_bindings_remove(const char *name, key_code key)
{
	struct key_table	*table;
	struct key_binding	*bd;

	table = key_bindings_get_table(name, 0);
	if (table == NULL)
		return;

	bd = key_bindings_get(table, key & ~KEYC_MASK_FLAGS);
	if (bd == NULL)
		return;

	RB_REMOVE(key_bindings, &table->key_bindings, bd);
	key_bindings_free(bd);

	if (RB_EMPTY(&table->key_bindings) &&
	    RB_EMPTY(&table->default_key_bindings)) {
		RB_REMOVE(key_tables, &key_tables, table);
		key_bindings_unref_table(table);
	}
}

void
key_bindings_reset(const char *name, key_code key)
{
	struct key_table	*table;
	struct key_binding	*bd, *dd;

	table = key_bindings_get_table(name, 0);
	if (table == NULL)
		return;

	bd = key_bindings_get(table, key & ~KEYC_MASK_FLAGS);
	if (bd == NULL)
		return;

	dd = key_bindings_get_default(table, bd->key);
	if (dd == NULL) {
		key_bindings_remove(name, bd->key);
		return;
	}

	cmd_list_free(bd->cmdlist);
	bd->cmdlist = dd->cmdlist;
	bd->cmdlist->references++;

	free((void *)bd->note);
	if (dd->note != NULL)
		bd->note = xstrdup(dd->note);
	else
		bd->note = NULL;
	bd->flags = dd->flags;
}

void
key_bindings_remove_table(const char *name)
{
	struct key_table	*table;
	struct client		*c;

	table = key_bindings_get_table(name, 0);
	if (table != NULL) {
		RB_REMOVE(key_tables, &key_tables, table);
		key_bindings_unref_table(table);
	}
	TAILQ_FOREACH(c, &clients, entry) {
		if (c->keytable == table)
			server_client_set_key_table(c, NULL);
	}
}

void
key_bindings_reset_table(const char *name)
{
	struct key_table	*table;
	struct key_binding	*bd, *bd1;

	table = key_bindings_get_table(name, 0);
	if (table == NULL)
		return;
	if (RB_EMPTY(&table->default_key_bindings)) {
		key_bindings_remove_table(name);
		return;
	}
	RB_FOREACH_SAFE(bd, key_bindings, &table->key_bindings, bd1)
		key_bindings_reset(name, bd->key);
}

static enum cmd_retval
key_bindings_init_done(__unused struct cmdq_item *item, __unused void *data)
{
	struct key_table	*table;
	struct key_binding	*bd, *new_bd;

	RB_FOREACH(table, key_tables, &key_tables) {
		RB_FOREACH(bd, key_bindings, &table->key_bindings) {
			new_bd = xcalloc(1, sizeof *bd);
			new_bd->key = bd->key;
			if (bd->note != NULL)
				new_bd->note = xstrdup(bd->note);
			new_bd->flags = bd->flags;
			new_bd->cmdlist = bd->cmdlist;
			new_bd->cmdlist->references++;
			RB_INSERT(key_bindings, &table->default_key_bindings,
			    new_bd);
		}
	}
	return (CMD_RETURN_NORMAL);
}

void
key_bindings_init(void)
{
	static const char *defaults[] = {
		/* Prefix keys. */
		"bind -N 'Send the prefix key' C-b send-prefix",
		"bind -N 'Rotate through the panes' C-o rotate-window",
		"bind -N 'Suspend the current client' C-z suspend-client",
		"bind -N 'Select next layout' Space next-layout",
		"bind -N 'Break pane to a new window' ! break-pane",
		"bind -N 'Split window vertically' '\"' split-window",
		"bind -N 'List all paste buffers' '#' list-buffers",
		"bind -N 'Rename current session' '$' command-prompt -I'#S' \"rename-session -- '%%'\"",
		"bind -N 'Split window horizontally' % split-window -h",
		"bind -N 'Kill current window' & confirm-before -p\"kill-window #W? (y/n)\" kill-window",
		"bind -N 'Prompt for window index to select' \"'\" command-prompt -Wpindex \"select-window -t ':%%'\"",
		"bind -N 'Switch to previous client' ( switch-client -p",
		"bind -N 'Switch to next client' ) switch-client -n",
		"bind -N 'Rename current window' , command-prompt -I'#W' \"rename-window -- '%%'\"",
		"bind -N 'Delete the most recent paste buffer' - delete-buffer",
		"bind -N 'Move the current window' . command-prompt -T \"move-window -t '%%'\"",
		"bind -N 'Describe key binding' '/' command-prompt -kpkey 'list-keys -1N \"%%%\"'",
		"bind -N 'Select window 0' 0 select-window -t:=0",
		"bind -N 'Select window 1' 1 select-window -t:=1",
		"bind -N 'Select window 2' 2 select-window -t:=2",
		"bind -N 'Select window 3' 3 select-window -t:=3",
		"bind -N 'Select window 4' 4 select-window -t:=4",
		"bind -N 'Select window 5' 5 select-window -t:=5",
		"bind -N 'Select window 6' 6 select-window -t:=6",
		"bind -N 'Select window 7' 7 select-window -t:=7",
		"bind -N 'Select window 8' 8 select-window -t:=8",
		"bind -N 'Select window 9' 9 select-window -t:=9",
		"bind -N 'Prompt for a command' : command-prompt",
		"bind -N 'Move to the previously active pane' \\; last-pane",
		"bind -N 'Choose a paste buffer from a list' = choose-buffer -Z",
		"bind -N 'List key bindings' ? list-keys -N",
		"bind -N 'Choose a client from a list' D choose-client -Z",
		"bind -N 'Spread panes out evenly' E select-layout -E",
		"bind -N 'Switch to the last client' L switch-client -l",
		"bind -N 'Clear the marked pane' M select-pane -M",
		"bind -N 'Enter copy mode' [ copy-mode",
		"bind -N 'Paste the most recent paste buffer' ] paste-buffer -p",
		"bind -N 'Create a new window' c new-window",
		"bind -N 'Detach the current client' d detach-client",
		"bind -N 'Search for a pane' f command-prompt \"find-window -Z -- '%%'\"",
		"bind -N 'Display window information' i display-message",
		"bind -N 'Select the previously current window' l last-window",
		"bind -N 'Toggle the marked pane' m select-pane -m",
		"bind -N 'Select the next window' n next-window",
		"bind -N 'Select the next pane' o select-pane -t:.+",
		"bind -N 'Customize options' C customize-mode -Z",
		"bind -N 'Select the previous window' p previous-window",
		"bind -N 'Display pane numbers' q display-panes",
		"bind -N 'Redraw the current client' r refresh-client",
		"bind -N 'Choose a session from a list' s choose-tree -Zs",
		"bind -N 'Show a clock' t clock-mode",
		"bind -N 'Choose a window from a list' w choose-tree -Zw",
		"bind -N 'Kill the active pane' x confirm-before -p\"kill-pane #P? (y/n)\" kill-pane",
		"bind -N 'Zoom the active pane' z resize-pane -Z",
		"bind -N 'Swap the active pane with the pane above' '{' swap-pane -U",
		"bind -N 'Swap the active pane with the pane below' '}' swap-pane -D",
		"bind -N 'Show messages' '~' show-messages",
		"bind -N 'Enter copy mode and scroll up' PPage copy-mode -u",
		"bind -N 'Select the pane above the active pane' -r Up select-pane -U",
		"bind -N 'Select the pane below the active pane' -r Down select-pane -D",
		"bind -N 'Select the pane to the left of the active pane' -r Left select-pane -L",
		"bind -N 'Select the pane to the right of the active pane' -r Right select-pane -R",
		"bind -N 'Set the even-horizontal layout' M-1 select-layout even-horizontal",
		"bind -N 'Set the even-vertical layout' M-2 select-layout even-vertical",
		"bind -N 'Set the main-horizontal layout' M-3 select-layout main-horizontal",
		"bind -N 'Set the main-vertical layout' M-4 select-layout main-vertical",
		"bind -N 'Select the tiled layout' M-5 select-layout tiled",
		"bind -N 'Select the next window with an alert' M-n next-window -a",
		"bind -N 'Rotate through the panes in reverse' M-o rotate-window -D",
		"bind -N 'Select the previous window with an alert' M-p previous-window -a",
		"bind -N 'Move the visible part of the window up' -r S-Up refresh-client -U 10",
		"bind -N 'Move the visible part of the window down' -r S-Down refresh-client -D 10",
		"bind -N 'Move the visible part of the window left' -r S-Left refresh-client -L 10",
		"bind -N 'Move the visible part of the window right' -r S-Right refresh-client -R 10",
		"bind -N 'Reset so the visible part of the window follows the cursor' -r DC refresh-client -c",
		"bind -N 'Resize the pane up by 5' -r M-Up resize-pane -U 5",
		"bind -N 'Resize the pane down by 5' -r M-Down resize-pane -D 5",
		"bind -N 'Resize the pane left by 5' -r M-Left resize-pane -L 5",
		"bind -N 'Resize the pane right by 5' -r M-Right resize-pane -R 5",
		"bind -N 'Resize the pane up' -r C-Up resize-pane -U",
		"bind -N 'Resize the pane down' -r C-Down resize-pane -D",
		"bind -N 'Resize the pane left' -r C-Left resize-pane -L",
		"bind -N 'Resize the pane right' -r C-Right resize-pane -R",

		/* Menu keys */
		"bind < display-menu -xW -yW -T '#[align=centre]#{window_index}:#{window_name}' " DEFAULT_WINDOW_MENU,
		"bind > display-menu -xP -yP -T '#[align=centre]#{pane_index} (#{pane_id})' " DEFAULT_PANE_MENU,

		/* Mouse button 1 down on pane. */
		"bind -n MouseDown1Pane select-pane -t=\\; send -M",

		/* Mouse button 1 drag on pane. */
		"bind -n MouseDrag1Pane if -F '#{||:#{pane_in_mode},#{mouse_any_flag}}' { send -M } { copy-mode -M }",

		/* Mouse wheel up on pane. */
		"bind -n WheelUpPane if -F '#{||:#{pane_in_mode},#{mouse_any_flag}}' { send -M } { copy-mode -e }",

		/* Mouse button 2 down on pane. */
		"bind -n MouseDown2Pane select-pane -t=\\; if -F '#{||:#{pane_in_mode},#{mouse_any_flag}}' { send -M } { paste -p }",

		/* Mouse button 1 double click on pane. */
		"bind -n DoubleClick1Pane select-pane -t=\\; if -F '#{||:#{pane_in_mode},#{mouse_any_flag}}' { send -M } { copy-mode -H; send -X select-word; run -d0.3; send -X copy-pipe-and-cancel }",

		/* Mouse button 1 triple click on pane. */
		"bind -n TripleClick1Pane select-pane -t=\\; if -F '#{||:#{pane_in_mode},#{mouse_any_flag}}' { send -M } { copy-mode -H; send -X select-line; run -d0.3; send -X copy-pipe-and-cancel }",

		/* Mouse button 1 drag on border. */
		"bind -n MouseDrag1Border resize-pane -M",

		/* Mouse button 1 down on status line. */
		"bind -n MouseDown1Status select-window -t=",

		/* Mouse wheel down on status line. */
		"bind -n WheelDownStatus next-window",

		/* Mouse wheel up on status line. */
		"bind -n WheelUpStatus previous-window",

		/* Mouse button 3 down on status left. */
		"bind -n MouseDown3StatusLeft display-menu -t= -xM -yW -T '#[align=centre]#{session_name}' " DEFAULT_SESSION_MENU,

		/* Mouse button 3 down on status line. */
		"bind -n MouseDown3Status display-menu -t= -xW -yW -T '#[align=centre]#{window_index}:#{window_name}' " DEFAULT_WINDOW_MENU,

		/* Mouse button 3 down on pane. */
		"bind -n MouseDown3Pane if -Ft= '#{||:#{mouse_any_flag},#{&&:#{pane_in_mode},#{?#{m/r:(copy|view)-mode,#{pane_mode}},0,1}}}' { select-pane -t=; send -M } { display-menu -t= -xM -yM -T '#[align=centre]#{pane_index} (#{pane_id})' " DEFAULT_PANE_MENU " }",
		"bind -n M-MouseDown3Pane display-menu -t= -xM -yM -T '#[align=centre]#{pane_index} (#{pane_id})' " DEFAULT_PANE_MENU,

		/* Copy mode (emacs) keys. */
		"bind -Tcopy-mode C-Space send -X begin-selection",
		"bind -Tcopy-mode C-a send -X start-of-line",
		"bind -Tcopy-mode C-c send -X cancel",
		"bind -Tcopy-mode C-e send -X end-of-line",
		"bind -Tcopy-mode C-f send -X cursor-right",
		"bind -Tcopy-mode C-b send -X cursor-left",
		"bind -Tcopy-mode C-g send -X clear-selection",
		"bind -Tcopy-mode C-k send -X copy-end-of-line",
		"bind -Tcopy-mode C-n send -X cursor-down",
		"bind -Tcopy-mode C-p send -X cursor-up",
		"bind -Tcopy-mode C-r command-prompt -ip'(search up)' -I'#{pane_search_string}' 'send -X search-backward-incremental \"%%%\"'",
		"bind -Tcopy-mode C-s command-prompt -ip'(search down)' -I'#{pane_search_string}' 'send -X search-forward-incremental \"%%%\"'",
		"bind -Tcopy-mode C-v send -X page-down",
		"bind -Tcopy-mode C-w send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode Escape send -X cancel",
		"bind -Tcopy-mode Space send -X page-down",
		"bind -Tcopy-mode , send -X jump-reverse",
		"bind -Tcopy-mode \\; send -X jump-again",
		"bind -Tcopy-mode F command-prompt -1p'(jump backward)' 'send -X jump-backward \"%%%\"'",
		"bind -Tcopy-mode N send -X search-reverse",
		"bind -Tcopy-mode R send -X rectangle-toggle",
		"bind -Tcopy-mode T command-prompt -1p'(jump to backward)' 'send -X jump-to-backward \"%%%\"'",
		"bind -Tcopy-mode X send -X set-mark",
		"bind -Tcopy-mode f command-prompt -1p'(jump forward)' 'send -X jump-forward \"%%%\"'",
		"bind -Tcopy-mode g command-prompt -p'(goto line)' 'send -X goto-line \"%%%\"'",
		"bind -Tcopy-mode n send -X search-again",
		"bind -Tcopy-mode q send -X cancel",
		"bind -Tcopy-mode r send -X refresh-from-pane",
		"bind -Tcopy-mode t command-prompt -1p'(jump to forward)' 'send -X jump-to-forward \"%%%\"'",
		"bind -Tcopy-mode Home send -X start-of-line",
		"bind -Tcopy-mode End send -X end-of-line",
		"bind -Tcopy-mode MouseDown1Pane select-pane",
		"bind -Tcopy-mode MouseDrag1Pane select-pane\\; send -X begin-selection",
		"bind -Tcopy-mode MouseDragEnd1Pane send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode WheelUpPane select-pane\\; send -N5 -X scroll-up",
		"bind -Tcopy-mode WheelDownPane select-pane\\; send -N5 -X scroll-down",
		"bind -Tcopy-mode DoubleClick1Pane select-pane\\; send -X select-word\\; run -d0.3\\; send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode TripleClick1Pane select-pane\\; send -X select-line\\; run -d0.3\\; send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode NPage send -X page-down",
		"bind -Tcopy-mode PPage send -X page-up",
		"bind -Tcopy-mode Up send -X cursor-up",
		"bind -Tcopy-mode Down send -X cursor-down",
		"bind -Tcopy-mode Left send -X cursor-left",
		"bind -Tcopy-mode Right send -X cursor-right",
		"bind -Tcopy-mode M-1 command-prompt -Np'(repeat)' -I1 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-2 command-prompt -Np'(repeat)' -I2 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-3 command-prompt -Np'(repeat)' -I3 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-4 command-prompt -Np'(repeat)' -I4 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-5 command-prompt -Np'(repeat)' -I5 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-6 command-prompt -Np'(repeat)' -I6 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-7 command-prompt -Np'(repeat)' -I7 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-8 command-prompt -Np'(repeat)' -I8 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-9 command-prompt -Np'(repeat)' -I9 'send -N \"%%%\"'",
		"bind -Tcopy-mode M-< send -X history-top",
		"bind -Tcopy-mode M-> send -X history-bottom",
		"bind -Tcopy-mode M-R send -X top-line",
		"bind -Tcopy-mode M-b send -X previous-word",
		"bind -Tcopy-mode C-M-b send -X previous-matching-bracket",
		"bind -Tcopy-mode M-f send -X next-word-end",
		"bind -Tcopy-mode C-M-f send -X next-matching-bracket",
		"bind -Tcopy-mode M-m send -X back-to-indentation",
		"bind -Tcopy-mode M-r send -X middle-line",
		"bind -Tcopy-mode M-v send -X page-up",
		"bind -Tcopy-mode M-w send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode M-x send -X jump-to-mark",
		"bind -Tcopy-mode 'M-{' send -X previous-paragraph",
		"bind -Tcopy-mode 'M-}' send -X next-paragraph",
		"bind -Tcopy-mode M-Up send -X halfpage-up",
		"bind -Tcopy-mode M-Down send -X halfpage-down",
		"bind -Tcopy-mode C-Up send -X scroll-up",
		"bind -Tcopy-mode C-Down send -X scroll-down",

		/* Copy mode (vi) keys. */
		"bind -Tcopy-mode-vi '#' send -FX search-backward '#{copy_cursor_word}'",
		"bind -Tcopy-mode-vi * send -FX search-forward '#{copy_cursor_word}'",
		"bind -Tcopy-mode-vi C-c send -X cancel",
		"bind -Tcopy-mode-vi C-d send -X halfpage-down",
		"bind -Tcopy-mode-vi C-e send -X scroll-down",
		"bind -Tcopy-mode-vi C-b send -X page-up",
		"bind -Tcopy-mode-vi C-f send -X page-down",
		"bind -Tcopy-mode-vi C-h send -X cursor-left",
		"bind -Tcopy-mode-vi C-j send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode-vi Enter send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode-vi C-u send -X halfpage-up",
		"bind -Tcopy-mode-vi C-v send -X rectangle-toggle",
		"bind -Tcopy-mode-vi C-y send -X scroll-up",
		"bind -Tcopy-mode-vi Escape send -X clear-selection",
		"bind -Tcopy-mode-vi Space send -X begin-selection",
		"bind -Tcopy-mode-vi '$' send -X end-of-line",
		"bind -Tcopy-mode-vi , send -X jump-reverse",
		"bind -Tcopy-mode-vi / command-prompt -p'(search down)' 'send -X search-forward \"%%%\"'",
		"bind -Tcopy-mode-vi 0 send -X start-of-line",
		"bind -Tcopy-mode-vi 1 command-prompt -Np'(repeat)' -I1 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 2 command-prompt -Np'(repeat)' -I2 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 3 command-prompt -Np'(repeat)' -I3 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 4 command-prompt -Np'(repeat)' -I4 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 5 command-prompt -Np'(repeat)' -I5 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 6 command-prompt -Np'(repeat)' -I6 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 7 command-prompt -Np'(repeat)' -I7 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 8 command-prompt -Np'(repeat)' -I8 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi 9 command-prompt -Np'(repeat)' -I9 'send -N \"%%%\"'",
		"bind -Tcopy-mode-vi : command-prompt -p'(goto line)' 'send -X goto-line \"%%%\"'",
		"bind -Tcopy-mode-vi \\; send -X jump-again",
		"bind -Tcopy-mode-vi ? command-prompt -p'(search up)' 'send -X search-backward \"%%%\"'",
		"bind -Tcopy-mode-vi A send -X append-selection-and-cancel",
		"bind -Tcopy-mode-vi B send -X previous-space",
		"bind -Tcopy-mode-vi D send -X copy-end-of-line",
		"bind -Tcopy-mode-vi E send -X next-space-end",
		"bind -Tcopy-mode-vi F command-prompt -1p'(jump backward)' 'send -X jump-backward \"%%%\"'",
		"bind -Tcopy-mode-vi G send -X history-bottom",
		"bind -Tcopy-mode-vi H send -X top-line",
		"bind -Tcopy-mode-vi J send -X scroll-down",
		"bind -Tcopy-mode-vi K send -X scroll-up",
		"bind -Tcopy-mode-vi L send -X bottom-line",
		"bind -Tcopy-mode-vi M send -X middle-line",
		"bind -Tcopy-mode-vi N send -X search-reverse",
		"bind -Tcopy-mode-vi T command-prompt -1p'(jump to backward)' 'send -X jump-to-backward \"%%%\"'",
		"bind -Tcopy-mode-vi V send -X select-line",
		"bind -Tcopy-mode-vi W send -X next-space",
		"bind -Tcopy-mode-vi X send -X set-mark",
		"bind -Tcopy-mode-vi ^ send -X back-to-indentation",
		"bind -Tcopy-mode-vi b send -X previous-word",
		"bind -Tcopy-mode-vi e send -X next-word-end",
		"bind -Tcopy-mode-vi f command-prompt -1p'(jump forward)' 'send -X jump-forward \"%%%\"'",
		"bind -Tcopy-mode-vi g send -X history-top",
		"bind -Tcopy-mode-vi h send -X cursor-left",
		"bind -Tcopy-mode-vi j send -X cursor-down",
		"bind -Tcopy-mode-vi k send -X cursor-up",
		"bind -Tcopy-mode-vi l send -X cursor-right",
		"bind -Tcopy-mode-vi n send -X search-again",
		"bind -Tcopy-mode-vi o send -X other-end",
		"bind -Tcopy-mode-vi q send -X cancel",
		"bind -Tcopy-mode-vi r send -X refresh-from-pane",
		"bind -Tcopy-mode-vi t command-prompt -1p'(jump to forward)' 'send -X jump-to-forward \"%%%\"'",
		"bind -Tcopy-mode-vi v send -X rectangle-toggle",
		"bind -Tcopy-mode-vi w send -X next-word",
		"bind -Tcopy-mode-vi '{' send -X previous-paragraph",
		"bind -Tcopy-mode-vi '}' send -X next-paragraph",
		"bind -Tcopy-mode-vi % send -X next-matching-bracket",
		"bind -Tcopy-mode-vi MouseDown1Pane select-pane",
		"bind -Tcopy-mode-vi MouseDrag1Pane select-pane\\; send -X begin-selection",
		"bind -Tcopy-mode-vi MouseDragEnd1Pane send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode-vi WheelUpPane select-pane\\; send -N5 -X scroll-up",
		"bind -Tcopy-mode-vi WheelDownPane select-pane\\; send -N5 -X scroll-down",
		"bind -Tcopy-mode-vi DoubleClick1Pane select-pane\\; send -X select-word\\; run -d0.3\\; send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode-vi TripleClick1Pane select-pane\\; send -X select-line\\; run -d0.3\\; send -X copy-pipe-and-cancel",
		"bind -Tcopy-mode-vi BSpace send -X cursor-left",
		"bind -Tcopy-mode-vi NPage send -X page-down",
		"bind -Tcopy-mode-vi PPage send -X page-up",
		"bind -Tcopy-mode-vi Up send -X cursor-up",
		"bind -Tcopy-mode-vi Down send -X cursor-down",
		"bind -Tcopy-mode-vi Left send -X cursor-left",
		"bind -Tcopy-mode-vi Right send -X cursor-right",
		"bind -Tcopy-mode-vi M-x send -X jump-to-mark",
		"bind -Tcopy-mode-vi C-Up send -X scroll-up",
		"bind -Tcopy-mode-vi C-Down send -X scroll-down",
	};
	u_int			 i;
	struct cmd_parse_result	*pr;

	for (i = 0; i < nitems(defaults); i++) {
		pr = cmd_parse_from_string(defaults[i], NULL);
		if (pr->status != CMD_PARSE_SUCCESS)
			fatalx("bad default key: %s", defaults[i]);
		cmdq_append(NULL, cmdq_get_command(pr->cmdlist, NULL));
		cmd_list_free(pr->cmdlist);
	}
	cmdq_append(NULL, cmdq_get_callback(key_bindings_init_done, NULL));
}

static enum cmd_retval
key_bindings_read_only(struct cmdq_item *item, __unused void *data)
{
	cmdq_error(item, "client is read-only");
	return (CMD_RETURN_ERROR);
}

struct cmdq_item *
key_bindings_dispatch(struct key_binding *bd, struct cmdq_item *item,
    struct client *c, struct key_event *event, struct cmd_find_state *fs)
{
	struct cmdq_item	*new_item;
	struct cmdq_state	*new_state;
	int			 readonly, flags = 0;

	if (c == NULL || (~c->flags & CLIENT_READONLY))
		readonly = 1;
	else
		readonly = cmd_list_all_have(bd->cmdlist, CMD_READONLY);
	if (!readonly)
		new_item = cmdq_get_callback(key_bindings_read_only, NULL);
	else {
		if (bd->flags & KEY_BINDING_REPEAT)
			flags |= CMDQ_STATE_REPEAT;
		new_state = cmdq_new_state(fs, event, flags);
		new_item = cmdq_get_command(bd->cmdlist, new_state);
		cmdq_free_state(new_state);
	}
	if (item != NULL)
		new_item = cmdq_insert_after(item, new_item);
	else
		new_item = cmdq_append(c, new_item);
	return (new_item);
}