src/keyboard.h

   1 /* Declarations useful when processing input.
   2    Copyright (C) 1985-1987, 1993, 2001-2012  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include "systime.h"            /* for EMACS_TIME, Time */
  20 #include "coding.h"             /* for ENCODE_UTF_8 and ENCODE_SYSTEM */
  21
  22 INLINE_HEADER_BEGIN
  23 #ifndef KEYBOARD_INLINE
  24 # define KEYBOARD_INLINE INLINE
  25 #endif
  26
  27 /* Most code should use this macro to access Lisp fields in struct kboard.  */
  28
  29 #define KVAR(kboard, field) ((kboard)->INTERNAL_FIELD (field))
  30
  31 /* Each KBOARD represents one logical input stream from which Emacs
  32    gets input.  If we are using ordinary terminals, it has one KBOARD
  33    object for each terminal device.
  34    Usually each X display screen has its own KBOARD,
  35    but when two of them are on the same X server,
  36    we assume they share a keyboard and give them one KBOARD in common.
  37
  38    Some Lisp variables are per-kboard; they are stored in the KBOARD structure
  39    and accessed indirectly via a Lisp_Misc_Kboard_Objfwd object.
  40
  41    So that definition of keyboard macros, and reading of prefix arguments,
  42    can happen in parallel on various KBOARDs at once,
  43    the state information for those activities is stored in the KBOARD.
  44
  45    Emacs has two states for reading input:
  46
  47    ** Any kboard.  Emacs can accept input from any KBOARD,
  48    and as soon as any of them provides a complete command, Emacs can run it.
  49
  50    ** Single kboard.  Then Emacs is running a command for one KBOARD
  51    and can only read input from that KBOARD.
  52
  53    All input, from all KBOARDs, goes together in a single event queue
  54    at interrupt level.  read_char sees the events sequentially,
  55    but deals with them in accord with the current input state.
  56
  57    In the any-kboard state, read_key_sequence processes input from any KBOARD
  58    immediately.  When a new event comes in from a particular KBOARD,
  59    read_key_sequence switches to that KBOARD.  As a result,
  60    as soon as a complete key arrives from some KBOARD or other,
  61    Emacs starts executing that key's binding.  It switches to the
  62    single-kboard state for the execution of that command,
  63    so that that command can get input only from its own KBOARD.
  64
  65    While in the single-kboard state, read_char can consider input only
  66    from the current KBOARD.  If events come from other KBOARDs, they
  67    are put aside for later in the KBOARDs' kbd_queue lists.
  68    The flag kbd_queue_has_data in a KBOARD is 1 if this has happened.
  69    When Emacs goes back to the any-kboard state, it looks at all the KBOARDs
  70    to find those; and it tries processing their input right away.  */
  71
  72 typedef struct kboard KBOARD;
  73 struct kboard
  74   {
  75     KBOARD *next_kboard;
  76
  77     /* If non-nil, a keymap that overrides all others but applies only to
  78        this KBOARD.  Lisp code that uses this instead of calling read-char
  79        can effectively wait for input in the any-kboard state, and hence
  80        avoid blocking out the other KBOARDs.  See universal-argument in
  81        lisp/simple.el for an example.  */
  82     Lisp_Object INTERNAL_FIELD (Voverriding_terminal_local_map);
  83
  84     /* Last command executed by the editor command loop, not counting
  85        commands that set the prefix argument.  */
  86     Lisp_Object INTERNAL_FIELD (Vlast_command);
  87
  88     /* Normally same as last-command, but never modified by other commands.  */
  89     Lisp_Object INTERNAL_FIELD (Vreal_last_command);
  90
  91     /* User-supplied table to translate input characters through.  */
  92     Lisp_Object INTERNAL_FIELD (Vkeyboard_translate_table);
  93
  94     /* Last command that may be repeated by `repeat'.  */
  95     Lisp_Object INTERNAL_FIELD (Vlast_repeatable_command);
  96
  97     /* The prefix argument for the next command, in raw form.  */
  98     Lisp_Object INTERNAL_FIELD (Vprefix_arg);
  99
 100     /* Saved prefix argument for the last command, in raw form.  */
 101     Lisp_Object INTERNAL_FIELD (Vlast_prefix_arg);
 102
 103     /* Unread events specific to this kboard.  */
 104     Lisp_Object INTERNAL_FIELD (kbd_queue);
 105
 106     /* Non-nil while a kbd macro is being defined.  */
 107     Lisp_Object INTERNAL_FIELD (defining_kbd_macro);
 108
 109     /* The start of storage for the current keyboard macro.  */
 110     Lisp_Object *kbd_macro_buffer;
 111
 112     /* Where to store the next keystroke of the macro.  */
 113     Lisp_Object *kbd_macro_ptr;
 114
 115     /* The finalized section of the macro starts at kbd_macro_buffer and
 116        ends before this.  This is not the same as kbd_macro_ptr, because
 117        we advance this to kbd_macro_ptr when a key's command is complete.
 118        This way, the keystrokes for "end-kbd-macro" are not included in the
 119        macro.  This also allows us to throw away the events added to the
 120        macro by the last command: all the events between kbd_macro_end and
 121        kbd_macro_ptr belong to the last command; see
 122        cancel-kbd-macro-events.  */
 123     Lisp_Object *kbd_macro_end;
 124
 125     /* Allocated size of kbd_macro_buffer.  */
 126     ptrdiff_t kbd_macro_bufsize;
 127
 128     /* Last anonymous kbd macro defined.  */
 129     Lisp_Object INTERNAL_FIELD (Vlast_kbd_macro);
 130
 131     /* Alist of system-specific X windows key symbols.  */
 132     Lisp_Object INTERNAL_FIELD (Vsystem_key_alist);
 133
 134     /* Cache for modify_event_symbol.  */
 135     Lisp_Object INTERNAL_FIELD (system_key_syms);
 136
 137     /* The kind of display: x, w32, ...  */
 138     Lisp_Object INTERNAL_FIELD (Vwindow_system);
 139
 140     /* Keymap mapping keys to alternative preferred forms.
 141        See the DEFVAR for more documentation.  */
 142     Lisp_Object INTERNAL_FIELD (Vlocal_function_key_map);
 143
 144     /* Keymap mapping ASCII function key sequences onto their preferred
 145        forms.  Initialized by the terminal-specific lisp files.  See the
 146        DEFVAR for more documentation.  */
 147     Lisp_Object INTERNAL_FIELD (Vinput_decode_map);
 148
 149     /* Minibufferless frames on this display use this frame's minibuffer.  */
 150     Lisp_Object INTERNAL_FIELD (Vdefault_minibuffer_frame);
 151
 152     /* Number of displays using this KBOARD.  Normally 1, but can be
 153        larger when you have multiple screens on a single X display.  */
 154     int reference_count;
 155
 156     /* The text we're echoing in the modeline - partial key sequences,
 157        usually.  This is nil when not echoing.  */
 158     Lisp_Object INTERNAL_FIELD (echo_string);
 159
 160     /* This flag indicates that events were put into kbd_queue
 161        while Emacs was running for some other KBOARD.
 162        The flag means that, when Emacs goes into the any-kboard state again,
 163        it should check this KBOARD to see if there is a complete command
 164        waiting.
 165
 166        Note that the kbd_queue field can be non-nil even when
 167        kbd_queue_has_data is 0.  When we push back an incomplete
 168        command, then this flag is 0, meaning we don't want to try
 169        reading from this KBOARD again until more input arrives.  */
 170     char kbd_queue_has_data;
 171
 172     /* True means echo each character as typed.  */
 173     unsigned immediate_echo : 1;
 174
 175     /* If we have echoed a prompt string specified by the user,
 176        this is its length in characters.  Otherwise this is -1.  */
 177     ptrdiff_t echo_after_prompt;
 178   };
 179
 180 KEYBOARD_INLINE void
 181 kset_default_minibuffer_frame (struct kboard *kb, Lisp_Object val)
 182 {
 183   kb->INTERNAL_FIELD (Vdefault_minibuffer_frame) = val;
 184 }
 185 KEYBOARD_INLINE void
 186 kset_defining_kbd_macro (struct kboard *kb, Lisp_Object val)
 187 {
 188   kb->INTERNAL_FIELD (defining_kbd_macro) = val;
 189 }
 190 KEYBOARD_INLINE void
 191 kset_input_decode_map (struct kboard *kb, Lisp_Object val)
 192 {
 193   kb->INTERNAL_FIELD (Vinput_decode_map) = val;
 194 }
 195 KEYBOARD_INLINE void
 196 kset_last_command (struct kboard *kb, Lisp_Object val)
 197 {
 198   kb->INTERNAL_FIELD (Vlast_command) = val;
 199 }
 200 KEYBOARD_INLINE void
 201 kset_last_kbd_macro (struct kboard *kb, Lisp_Object val)
 202 {
 203   kb->INTERNAL_FIELD (Vlast_kbd_macro) = val;
 204 }
 205 KEYBOARD_INLINE void
 206 kset_prefix_arg (struct kboard *kb, Lisp_Object val)
 207 {
 208   kb->INTERNAL_FIELD (Vprefix_arg) = val;
 209 }
 210 KEYBOARD_INLINE void
 211 kset_system_key_alist (struct kboard *kb, Lisp_Object val)
 212 {
 213   kb->INTERNAL_FIELD (Vsystem_key_alist) = val;
 214 }
 215 KEYBOARD_INLINE void
 216 kset_window_system (struct kboard *kb, Lisp_Object val)
 217 {
 218   kb->INTERNAL_FIELD (Vwindow_system) = val;
 219 }
 220
 221 /* Temporarily used before a frame has been opened. */
 222 extern KBOARD *initial_kboard;
 223
 224 /* In the single-kboard state, this is the kboard
 225    from which input is accepted.
 226
 227    In the any-kboard state, this is the kboard from which we are
 228    right now considering input.  We can consider input from another
 229    kboard, but doing so requires throwing to wrong_kboard_jmpbuf.  */
 230 extern KBOARD *current_kboard;
 231
 232 /* A list of all kboard objects, linked through next_kboard.  */
 233 extern KBOARD *all_kboards;
 234 \f
 235 /* Total number of times read_char has returned, modulo UINTMAX_MAX + 1.  */
 236 extern uintmax_t num_input_events;
 237
 238 /* Nonzero means polling for input is temporarily suppressed.  */
 239 extern int poll_suppress_count;
 240
 241 /* Vector holding the key sequence that invoked the current command.
 242    It is reused for each command, and it may be longer than the current
 243    sequence; this_command_key_count indicates how many elements
 244    actually mean something.  */
 245 extern Lisp_Object this_command_keys;
 246 extern ptrdiff_t this_command_key_count;
 247
 248 /* The frame in which the last input event occurred, or Qmacro if the
 249    last event came from a macro.  We use this to determine when to
 250    generate switch-frame events.  This may be cleared by functions
 251    like Fselect_frame, to make sure that a switch-frame event is
 252    generated by the next character.  */
 253 extern Lisp_Object internal_last_event_frame;
 254 \f
 255 extern Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook;
 256
 257 /* This holds a Lisp vector that holds the properties of a single
 258    menu item while decoding it in parse_menu_item.
 259    Using a Lisp vector to hold this information while we decode it
 260    takes care of protecting all the data from GC.  */
 261 extern Lisp_Object item_properties;
 262
 263 /* This describes the elements of item_properties.
 264    The first element is not a property, it is a pointer to the item properties
 265    that is saved for GC protection. */
 266 #define ITEM_PROPERTY_ITEM 0
 267 /* The item string.  */
 268 #define ITEM_PROPERTY_NAME 1
 269 /* Start of initialize to nil */
 270 /* The binding: nil, a command or a keymap.  */
 271 #define ITEM_PROPERTY_DEF 2
 272 /* The keymap if the binding is a keymap, otherwise nil.  */
 273 #define ITEM_PROPERTY_MAP 3
 274 /* Nil, :radio or :toggle.  */
 275 #define ITEM_PROPERTY_TYPE 4
 276 /* Nil or a string describing an equivalent key binding.  */
 277 #define ITEM_PROPERTY_KEYEQ 5
 278 /* Not nil if a selected toggle box or radio button, otherwise nil.  */
 279 #define ITEM_PROPERTY_SELECTED 6
 280 /* Place for a help string. Not yet used.  */
 281 #define ITEM_PROPERTY_HELP 7
 282 /* Start of initialize to t */
 283 /* Last property. */
 284 /* Not nil if item is enabled.  */
 285 #define ITEM_PROPERTY_ENABLE 8
 286
 287 /* This holds a Lisp vector that holds the results of decoding
 288    the keymaps or alist-of-alists that specify a menu.
 289
 290    It describes the panes and items within the panes.
 291
 292    Each pane is described by 3 elements in the vector:
 293    t, the pane name, the pane's prefix key.
 294    Then follow the pane's items, with 5 elements per item:
 295    the item string, the enable flag, the item's value,
 296    the definition, and the equivalent keyboard key's description string.
 297
 298    In some cases, multiple levels of menus may be described.
 299    A single vector slot containing nil indicates the start of a submenu.
 300    A single vector slot containing lambda indicates the end of a submenu.
 301    The submenu follows a menu item which is the way to reach the submenu.
 302
 303    A single vector slot containing quote indicates that the
 304    following items should appear on the right of a dialog box.
 305
 306    Using a Lisp vector to hold this information while we decode it
 307    takes care of protecting all the data from GC.  */
 308 extern Lisp_Object menu_items;
 309
 310 /* If non-nil, means that the global vars defined here are already in use.
 311    Used to detect cases where we try to re-enter this non-reentrant code.  */
 312 #if defined USE_GTK || defined USE_MOTIF
 313 extern Lisp_Object menu_items_inuse;
 314 #endif
 315
 316 /* Number of slots currently allocated in menu_items.  */
 317 extern int menu_items_allocated;
 318
 319 /* This is the index in menu_items of the first empty slot.  */
 320 extern int menu_items_used;
 321
 322 /* The number of panes currently recorded in menu_items,
 323    excluding those within submenus.  */
 324 extern int menu_items_n_panes;
 325
 326 #define MENU_ITEMS_PANE_NAME 1
 327 #define MENU_ITEMS_PANE_PREFIX 2
 328 #define MENU_ITEMS_PANE_LENGTH 3
 329
 330 enum menu_item_idx
 331 {
 332   MENU_ITEMS_ITEM_NAME = 0,
 333   MENU_ITEMS_ITEM_ENABLE,
 334   MENU_ITEMS_ITEM_VALUE,
 335   MENU_ITEMS_ITEM_EQUIV_KEY,
 336   MENU_ITEMS_ITEM_DEFINITION,
 337   MENU_ITEMS_ITEM_TYPE,
 338   MENU_ITEMS_ITEM_SELECTED,
 339   MENU_ITEMS_ITEM_HELP,
 340   MENU_ITEMS_ITEM_LENGTH
 341 };
 342
 343 extern Lisp_Object unuse_menu_items (Lisp_Object dummy);
 344
 345 /* This is how to deal with multibyte text if HAVE_MULTILINGUAL_MENU
 346    isn't defined.  The use of HAVE_MULTILINGUAL_MENU could probably be
 347    confined to an extended version of this with sections of code below
 348    using it unconditionally.  */
 349 #ifndef HAVE_NTGUI
 350 #if defined (USE_GTK) || defined (HAVE_NS)
 351 # define ENCODE_MENU_STRING(str) ENCODE_UTF_8 (str)
 352 #elif defined HAVE_X_I18N
 353 #define ENCODE_MENU_STRING(str) ENCODE_SYSTEM (str)
 354 #else
 355 #define ENCODE_MENU_STRING(str) string_make_unibyte (str)
 356 #endif /* USE_GTK  */
 357 #else /* HAVE_NTGUI */
 358 #define ENCODE_MENU_STRING(str) (str)
 359 #endif
 360
 361 #if defined (HAVE_NS) || defined (HAVE_NTGUI) || defined (USE_GTK)
 362
 363 /* Definitions copied from lwlib.h */
 364
 365 enum button_type
 366 {
 367   BUTTON_TYPE_NONE,
 368   BUTTON_TYPE_TOGGLE,
 369   BUTTON_TYPE_RADIO
 370 };
 371
 372 /* This structure is based on the one in ../lwlib/lwlib.h, with unused portions
 373    removed.  No term uses these. */
 374 typedef struct _widget_value
 375 {
 376   /* name of widget */
 377   Lisp_Object   lname;
 378   const char*   name;
 379   /* value (meaning depend on widget type) */
 380   const char*   value;
 381   /* keyboard equivalent. no implications for XtTranslations */
 382   Lisp_Object   lkey;
 383   const char*   key;
 384   /* Help string or nil if none.
 385      GC finds this string through the frame's menu_bar_vector
 386      or through menu_items.  */
 387   Lisp_Object   help;
 388   /* true if enabled */
 389   unsigned char enabled;
 390   /* true if selected */
 391   unsigned char selected;
 392   /* The type of a button.  */
 393   enum button_type button_type;
 394 #if defined (HAVE_NTGUI)
 395   /* true if menu title */
 396   unsigned char title;
 397 #endif
 398   /* Contents of the sub-widgets, also selected slot for checkbox */
 399   struct _widget_value* contents;
 400   /* data passed to callback */
 401   void  *call_data;
 402   /* next one in the list */
 403   struct _widget_value* next;
 404 #ifdef USE_GTK
 405   struct _widget_value *free_list;
 406 #endif
 407 } widget_value;
 408
 409 #endif /* HAVE_NS || HAVE_NTGUI */
 410
 411 \f
 412 /* Macros for dealing with lispy events.  */
 413
 414 /* True if EVENT has data fields describing it (i.e. a mouse click).  */
 415 #define EVENT_HAS_PARAMETERS(event) (CONSP (event))
 416
 417 /* Extract the head from an event.
 418    This works on composite and simple events.  */
 419 #define EVENT_HEAD(event) \
 420   (EVENT_HAS_PARAMETERS (event) ? XCAR (event) : (event))
 421
 422 /* Extract the starting and ending positions from a composite event.  */
 423 #define EVENT_START(event) (XCAR (XCDR (event)))
 424 #define EVENT_END(event) (XCAR (XCDR (XCDR (event))))
 425
 426 /* Extract the click count from a multi-click event.  */
 427 #define EVENT_CLICK_COUNT(event) (Fnth (make_number (2), (event)))
 428
 429 /* Extract the fields of a position.  */
 430 #define POSN_WINDOW(posn) (XCAR (posn))
 431 #define POSN_POSN(posn) (XCAR (XCDR (posn)))
 432 #define POSN_SET_POSN(posn,x) (XSETCAR (XCDR (posn), (x)))
 433 #define POSN_WINDOW_POSN(posn) (XCAR (XCDR (XCDR (posn))))
 434 #define POSN_TIMESTAMP(posn) (XCAR (XCDR (XCDR (XCDR (posn)))))
 435 #define POSN_SCROLLBAR_PART(posn)       (Fnth (make_number (4), (posn)))
 436
 437 /* A cons (STRING . STRING-CHARPOS), or nil in mouse-click events.
 438    It's a cons if the click is over a string in the mode line.  */
 439
 440 #define POSN_STRING(posn) (Fnth (make_number (4), (posn)))
 441
 442 /* If POSN_STRING is nil, event refers to buffer location.  */
 443
 444 #define POSN_INBUFFER_P(posn) (NILP (POSN_STRING (posn)))
 445 #define POSN_BUFFER_POSN(posn) (Fnth (make_number (5), (posn)))
 446
 447 /* Some of the event heads.  */
 448 extern Lisp_Object Qswitch_frame;
 449
 450 /* Properties on event heads.  */
 451 extern Lisp_Object Qevent_kind;
 452
 453 /* The values of Qevent_kind properties.  */
 454 extern Lisp_Object Qmouse_click;
 455
 456 extern Lisp_Object Qhelp_echo;
 457
 458 /* Getting the kind of an event head.  */
 459 #define EVENT_HEAD_KIND(event_head) \
 460   (Fget ((event_head), Qevent_kind))
 461
 462 /* Symbols to use for non-text mouse positions.  */
 463 extern Lisp_Object Qmode_line, Qvertical_line, Qheader_line;
 464
 465 /* True while doing kbd input.  */
 466 extern bool waiting_for_input;
 467
 468 /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt
 469    happens.  */
 470 extern EMACS_TIME *input_available_clear_time;
 471
 472 #if defined HAVE_WINDOW_SYSTEM && !defined USE_GTK && !defined HAVE_NS
 473 extern bool ignore_mouse_drag_p;
 474 #endif
 475
 476 /* The primary selection.  */
 477 extern Lisp_Object QPRIMARY;
 478
 479 /* Forward declaration for prototypes.  */
 480 struct input_event;
 481
 482 extern Lisp_Object parse_modifiers (Lisp_Object);
 483 extern Lisp_Object reorder_modifiers (Lisp_Object);
 484 extern Lisp_Object read_char (int, ptrdiff_t, Lisp_Object *, Lisp_Object,
 485                               bool *, EMACS_TIME *);
 486 extern int parse_solitary_modifier (Lisp_Object symbol);
 487
 488
 489 /* This is like Vthis_command, except that commands never set it.  */
 490 extern Lisp_Object real_this_command;
 491
 492 /* Non-nil disable property on a command means
 493    do not execute it; call disabled-command-function's value instead.  */
 494 extern Lisp_Object QCtoggle, QCradio;
 495
 496 /* An event header symbol HEAD may have a property named
 497    Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
 498    BASE is the base, unmodified version of HEAD, and MODIFIERS is the
 499    mask of modifiers applied to it.  If present, this is used to help
 500    speed up parse_modifiers.  */
 501 extern Lisp_Object Qevent_symbol_element_mask;
 502
 503 /* The timestamp of the last input event we received from the X server.
 504    X Windows wants this for selection ownership.  */
 505 extern Time last_event_timestamp;
 506
 507 extern int quit_char;
 508
 509 extern unsigned int timers_run;
 510
 511 extern bool menu_separator_name_p (const char *);
 512 extern bool parse_menu_item (Lisp_Object, int);
 513
 514 extern void init_kboard (KBOARD *);
 515 extern void delete_kboard (KBOARD *);
 516 extern void not_single_kboard_state (KBOARD *);
 517 extern void push_kboard (struct kboard *);
 518 extern void push_frame_kboard (struct frame *);
 519 extern void pop_kboard (void);
 520 extern void temporarily_switch_to_single_kboard (struct frame *);
 521 extern void record_asynch_buffer_change (void);
 522 extern void input_poll_signal (int);
 523 extern void start_polling (void);
 524 extern void stop_polling (void);
 525 extern void set_poll_suppress_count (int);
 526 extern int gobble_input (void);
 527 extern bool input_polling_used (void);
 528 extern void clear_input_pending (void);
 529 extern bool requeued_events_pending_p (void);
 530 extern void bind_polling_period (int);
 531 extern int make_ctrl_char (int) ATTRIBUTE_CONST;
 532 extern void stuff_buffered_input (Lisp_Object);
 533 extern void clear_waiting_for_input (void);
 534 extern void swallow_events (bool);
 535 extern bool lucid_event_type_list_p (Lisp_Object);
 536 extern void kbd_buffer_store_event (struct input_event *);
 537 extern void kbd_buffer_store_event_hold (struct input_event *,
 538                                          struct input_event *);
 539 extern void kbd_buffer_unget_event (struct input_event *);
 540 extern void poll_for_input_1 (void);
 541 extern void show_help_echo (Lisp_Object, Lisp_Object, Lisp_Object,
 542                             Lisp_Object);
 543 extern void gen_help_event (Lisp_Object, Lisp_Object, Lisp_Object,
 544                             Lisp_Object, ptrdiff_t);
 545 extern void kbd_buffer_store_help_event (Lisp_Object, Lisp_Object);
 546 extern Lisp_Object menu_item_eval_property (Lisp_Object);
 547 extern bool kbd_buffer_events_waiting (void);
 548 extern void add_user_signal (int, const char *);
 549
 550 extern int tty_read_avail_input (struct terminal *, struct input_event *);
 551 extern EMACS_TIME timer_check (void);
 552 extern void mark_kboards (void);
 553
 554 #ifdef HAVE_NTGUI
 555 extern const char *const lispy_function_keys[];
 556 #endif
 557
 558 INLINE_HEADER_END