1 /* Keyboard and mouse input; editor command loop.
2 Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995,
3 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
29 #include "termhooks.h"
36 #include "character.h"
38 #include "dispextern.h"
40 #include "intervals.h"
42 #include "blockinput.h"
49 #ifdef HAVE_GTK_AND_PTHREAD
57 #include <sys/ioctl.h>
59 #endif /* not MSDOS */
61 #include "syssignal.h"
64 #include <sys/types.h>
73 /* This is to get the definitions of the XK_ symbols. */
80 #endif /* HAVE_NTGUI */
90 /* Variables for blockinput.h: */
92 /* Non-zero if interrupt input is blocked right now. */
93 int interrupt_input_blocked
;
95 /* Nonzero means an input interrupt has arrived
96 during the current critical section. */
97 int interrupt_input_pending
;
100 /* File descriptor to use for input. */
103 #ifdef HAVE_WINDOW_SYSTEM
104 /* Make all keyboard buffers much bigger when using X windows. */
106 /* But not too big (local data > 32K error) if on Mac OS Classic. */
107 #define KBD_BUFFER_SIZE 512
109 #define KBD_BUFFER_SIZE 4096
111 #else /* No X-windows, character input */
112 #define KBD_BUFFER_SIZE 4096
113 #endif /* No X-windows */
115 #define abs(x) ((x) >= 0 ? (x) : -(x))
117 /* Following definition copied from eval.c */
121 struct backtrace
*next
;
122 Lisp_Object
*function
;
123 Lisp_Object
*args
; /* Points to vector of args. */
124 int nargs
; /* length of vector. If nargs is UNEVALLED,
125 args points to slot holding list of
128 /* Nonzero means call value of debugger when done with this operation. */
133 KBOARD
*initial_kboard
;
134 KBOARD
*current_kboard
;
138 KBOARD the_only_kboard
;
141 /* Non-nil disable property on a command means
142 do not execute it; call disabled-command-function's value instead. */
143 Lisp_Object Qdisabled
, Qdisabled_command_function
;
145 #define NUM_RECENT_KEYS (100)
146 int recent_keys_index
; /* Index for storing next element into recent_keys */
147 int total_keys
; /* Total number of elements stored into recent_keys */
148 Lisp_Object recent_keys
; /* A vector, holding the last 100 keystrokes */
150 /* Vector holding the key sequence that invoked the current command.
151 It is reused for each command, and it may be longer than the current
152 sequence; this_command_key_count indicates how many elements
153 actually mean something.
154 It's easier to staticpro a single Lisp_Object than an array. */
155 Lisp_Object this_command_keys
;
156 int this_command_key_count
;
158 /* 1 after calling Freset_this_command_lengths.
160 int this_command_key_count_reset
;
162 /* This vector is used as a buffer to record the events that were actually read
163 by read_key_sequence. */
164 Lisp_Object raw_keybuf
;
165 int raw_keybuf_count
;
167 #define GROW_RAW_KEYBUF \
168 if (raw_keybuf_count == XVECTOR (raw_keybuf)->size) \
170 int newsize = 2 * XVECTOR (raw_keybuf)->size; \
172 new = Fmake_vector (make_number (newsize), Qnil); \
173 bcopy (XVECTOR (raw_keybuf)->contents, XVECTOR (new)->contents, \
174 raw_keybuf_count * sizeof (Lisp_Object)); \
178 /* Number of elements of this_command_keys
179 that precede this key sequence. */
180 int this_single_command_key_start
;
182 /* Record values of this_command_key_count and echo_length ()
183 before this command was read. */
184 static int before_command_key_count
;
185 static int before_command_echo_length
;
187 extern int minbuf_level
;
189 extern int message_enable_multibyte
;
191 extern struct backtrace
*backtrace_list
;
193 /* If non-nil, the function that implements the display of help.
194 It's called with one argument, the help string to display. */
196 Lisp_Object Vshow_help_function
;
198 /* If a string, the message displayed before displaying a help-echo
201 Lisp_Object Vpre_help_message
;
203 /* Nonzero means do menu prompting. */
205 static int menu_prompting
;
207 /* Character to see next line of menu prompt. */
209 static Lisp_Object menu_prompt_more_char
;
211 /* For longjmp to where kbd input is being done. */
213 static jmp_buf getcjmp
;
215 /* True while doing kbd input. */
216 int waiting_for_input
;
218 /* True while displaying for echoing. Delays C-g throwing. */
222 /* Non-null means we can start echoing at the next input pause even
223 though there is something in the echo area. */
225 static struct kboard
*ok_to_echo_at_next_pause
;
227 /* The kboard last echoing, or null for none. Reset to 0 in
228 cancel_echoing. If non-null, and a current echo area message
229 exists, and echo_message_buffer is eq to the current message
230 buffer, we know that the message comes from echo_kboard. */
232 struct kboard
*echo_kboard
;
234 /* The buffer used for echoing. Set in echo_now, reset in
237 Lisp_Object echo_message_buffer
;
239 /* Nonzero means disregard local maps for the menu bar. */
240 static int inhibit_local_menu_bar_menus
;
242 /* Nonzero means C-g should cause immediate error-signal. */
245 /* The user's ERASE setting. */
246 Lisp_Object Vtty_erase_char
;
248 /* Character to recognize as the help char. */
249 Lisp_Object Vhelp_char
;
251 /* List of other event types to recognize as meaning "help". */
252 Lisp_Object Vhelp_event_list
;
254 /* Form to execute when help char is typed. */
255 Lisp_Object Vhelp_form
;
257 /* Command to run when the help character follows a prefix key. */
258 Lisp_Object Vprefix_help_command
;
260 /* List of items that should move to the end of the menu bar. */
261 Lisp_Object Vmenu_bar_final_items
;
263 /* Non-nil means show the equivalent key-binding for
264 any M-x command that has one.
265 The value can be a length of time to show the message for.
266 If the value is non-nil and not a number, we wait 2 seconds. */
267 Lisp_Object Vsuggest_key_bindings
;
269 /* How long to display an echo-area message when the minibuffer is active.
270 If the value is not a number, such messages don't time out. */
271 Lisp_Object Vminibuffer_message_timeout
;
273 /* Character that causes a quit. Normally C-g.
275 If we are running on an ordinary terminal, this must be an ordinary
276 ASCII char, since we want to make it our interrupt character.
278 If we are not running on an ordinary terminal, it still needs to be
279 an ordinary ASCII char. This character needs to be recognized in
280 the input interrupt handler. At this point, the keystroke is
281 represented as a struct input_event, while the desired quit
282 character is specified as a lispy event. The mapping from struct
283 input_events to lispy events cannot run in an interrupt handler,
284 and the reverse mapping is difficult for anything but ASCII
287 FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an
291 extern Lisp_Object current_global_map
;
292 extern int minibuf_level
;
294 /* If non-nil, this is a map that overrides all other local maps. */
295 Lisp_Object Voverriding_local_map
;
297 /* If non-nil, Voverriding_local_map applies to the menu bar. */
298 Lisp_Object Voverriding_local_map_menu_flag
;
300 /* Keymap that defines special misc events that should
301 be processed immediately at a low level. */
302 Lisp_Object Vspecial_event_map
;
304 /* Current depth in recursive edits. */
305 int command_loop_level
;
307 /* Total number of times command_loop has read a key sequence. */
308 EMACS_INT num_input_keys
;
310 /* Last input character read as a command. */
311 Lisp_Object last_command_char
;
313 /* Last input character read as a command, not counting menus
314 reached by the mouse. */
315 Lisp_Object last_nonmenu_event
;
317 /* Last input character read for any purpose. */
318 Lisp_Object last_input_char
;
320 /* If not Qnil, a list of objects to be read as subsequent command input. */
321 Lisp_Object Vunread_command_events
;
323 /* If not Qnil, a list of objects to be read as subsequent command input
324 including input method processing. */
325 Lisp_Object Vunread_input_method_events
;
327 /* If not Qnil, a list of objects to be read as subsequent command input
328 but NOT including input method processing. */
329 Lisp_Object Vunread_post_input_method_events
;
331 /* If not -1, an event to be read as subsequent command input. */
332 EMACS_INT unread_command_char
;
334 /* If not Qnil, this is a switch-frame event which we decided to put
335 off until the end of a key sequence. This should be read as the
336 next command input, after any unread_command_events.
338 read_key_sequence uses this to delay switch-frame events until the
339 end of the key sequence; Fread_char uses it to put off switch-frame
340 events until a non-ASCII event is acceptable as input. */
341 Lisp_Object unread_switch_frame
;
343 /* A mask of extra modifier bits to put into every keyboard char. */
344 EMACS_INT extra_keyboard_modifiers
;
346 /* Char to use as prefix when a meta character is typed in.
347 This is bound on entry to minibuffer in case ESC is changed there. */
349 Lisp_Object meta_prefix_char
;
351 /* Last size recorded for a current buffer which is not a minibuffer. */
352 static int last_non_minibuf_size
;
354 /* Number of idle seconds before an auto-save and garbage collection. */
355 static Lisp_Object Vauto_save_timeout
;
357 /* Total number of times read_char has returned. */
358 int num_input_events
;
360 /* Total number of times read_char has returned, outside of macros. */
361 EMACS_INT num_nonmacro_input_events
;
363 /* Auto-save automatically when this many characters have been typed
364 since the last time. */
366 static EMACS_INT auto_save_interval
;
368 /* Value of num_nonmacro_input_events as of last auto save. */
372 /* The command being executed by the command loop.
373 Commands may set this, and the value set will be copied into
374 current_kboard->Vlast_command instead of the actual command. */
375 Lisp_Object Vthis_command
;
377 /* This is like Vthis_command, except that commands never set it. */
378 Lisp_Object real_this_command
;
380 /* If the lookup of the command returns a binding, the original
381 command is stored in this-original-command. It is nil otherwise. */
382 Lisp_Object Vthis_original_command
;
384 /* The value of point when the last command was executed. */
385 int last_point_position
;
387 /* The buffer that was current when the last command was started. */
388 Lisp_Object last_point_position_buffer
;
390 /* The frame in which the last input event occurred, or Qmacro if the
391 last event came from a macro. We use this to determine when to
392 generate switch-frame events. This may be cleared by functions
393 like Fselect_frame, to make sure that a switch-frame event is
394 generated by the next character. */
395 Lisp_Object internal_last_event_frame
;
397 /* A user-visible version of the above, intended to allow users to
398 figure out where the last event came from, if the event doesn't
399 carry that information itself (i.e. if it was a character). */
400 Lisp_Object Vlast_event_frame
;
402 /* The timestamp of the last input event we received from the X server.
403 X Windows wants this for selection ownership. */
404 unsigned long last_event_timestamp
;
406 Lisp_Object Qself_insert_command
;
407 Lisp_Object Qforward_char
;
408 Lisp_Object Qbackward_char
;
409 Lisp_Object Qundefined
;
410 Lisp_Object Qtimer_event_handler
;
412 /* read_key_sequence stores here the command definition of the
413 key sequence that it reads. */
414 Lisp_Object read_key_sequence_cmd
;
416 /* Echo unfinished commands after this many seconds of pause. */
417 Lisp_Object Vecho_keystrokes
;
419 /* Form to evaluate (if non-nil) when Emacs is started. */
420 Lisp_Object Vtop_level
;
422 /* User-supplied table to translate input characters. */
423 Lisp_Object Vkeyboard_translate_table
;
425 /* Keymap mapping ASCII function key sequences onto their preferred forms. */
426 extern Lisp_Object Vfunction_key_map
;
428 /* Another keymap that maps key sequences into key sequences.
429 This one takes precedence over ordinary definitions. */
430 extern Lisp_Object Vkey_translation_map
;
432 /* If non-nil, this implements the current input method. */
433 Lisp_Object Vinput_method_function
;
434 Lisp_Object Qinput_method_function
;
436 /* When we call Vinput_method_function,
437 this holds the echo area message that was just erased. */
438 Lisp_Object Vinput_method_previous_message
;
440 /* Non-nil means deactivate the mark at end of this command. */
441 Lisp_Object Vdeactivate_mark
;
443 /* Menu bar specified in Lucid Emacs fashion. */
445 Lisp_Object Vlucid_menu_bar_dirty_flag
;
446 Lisp_Object Qrecompute_lucid_menubar
, Qactivate_menubar_hook
;
448 Lisp_Object Qecho_area_clear_hook
;
450 /* Hooks to run before and after each command. */
451 Lisp_Object Qpre_command_hook
, Vpre_command_hook
;
452 Lisp_Object Qpost_command_hook
, Vpost_command_hook
;
453 Lisp_Object Qcommand_hook_internal
, Vcommand_hook_internal
;
455 /* List of deferred actions to be performed at a later time.
456 The precise format isn't relevant here; we just check whether it is nil. */
457 Lisp_Object Vdeferred_action_list
;
459 /* Function to call to handle deferred actions, when there are any. */
460 Lisp_Object Vdeferred_action_function
;
461 Lisp_Object Qdeferred_action_function
;
463 Lisp_Object Qinput_method_exit_on_first_char
;
464 Lisp_Object Qinput_method_use_echo_area
;
466 /* File in which we write all commands we read. */
469 /* Nonzero if input is available. */
472 /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
473 keep 0200 bit in input chars. 0 to ignore the 0200 bit. */
477 extern char *pending_malloc_warning
;
479 /* Circular buffer for pre-read keyboard input. */
481 static struct input_event kbd_buffer
[KBD_BUFFER_SIZE
];
483 /* Pointer to next available character in kbd_buffer.
484 If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
485 This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the
486 next available char is in kbd_buffer[0]. */
487 static struct input_event
*kbd_fetch_ptr
;
489 /* Pointer to next place to store character in kbd_buffer. This
490 may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
491 character should go in kbd_buffer[0]. */
492 static struct input_event
* volatile kbd_store_ptr
;
494 /* The above pair of variables forms a "queue empty" flag. When we
495 enqueue a non-hook event, we increment kbd_store_ptr. When we
496 dequeue a non-hook event, we increment kbd_fetch_ptr. We say that
497 there is input available iff the two pointers are not equal.
499 Why not just have a flag set and cleared by the enqueuing and
500 dequeuing functions? Such a flag could be screwed up by interrupts
501 at inopportune times. */
503 /* If this flag is non-nil, we check mouse_moved to see when the
504 mouse moves, and motion events will appear in the input stream.
505 Otherwise, mouse motion is ignored. */
506 Lisp_Object do_mouse_tracking
;
508 /* Symbols to head events. */
509 Lisp_Object Qmouse_movement
;
510 Lisp_Object Qscroll_bar_movement
;
511 Lisp_Object Qswitch_frame
;
512 Lisp_Object Qdelete_frame
;
513 Lisp_Object Qiconify_frame
;
514 Lisp_Object Qmake_frame_visible
;
515 Lisp_Object Qselect_window
;
516 Lisp_Object Qhelp_echo
;
519 Lisp_Object Qmouse_fixup_help_message
;
522 /* Symbols to denote kinds of events. */
523 Lisp_Object Qfunction_key
;
524 Lisp_Object Qmouse_click
;
525 #if defined (WINDOWSNT) || defined (MAC_OS)
526 Lisp_Object Qlanguage_change
;
528 Lisp_Object Qdrag_n_drop
;
529 Lisp_Object Qsave_session
;
531 /* Lisp_Object Qmouse_movement; - also an event header */
533 /* Properties of event headers. */
534 Lisp_Object Qevent_kind
;
535 Lisp_Object Qevent_symbol_elements
;
537 /* menu item parts */
538 Lisp_Object Qmenu_alias
;
539 Lisp_Object Qmenu_enable
;
540 Lisp_Object QCenable
, QCvisible
, QChelp
, QCfilter
, QCkeys
, QCkey_sequence
;
541 Lisp_Object QCbutton
, QCtoggle
, QCradio
;
542 extern Lisp_Object Vdefine_key_rebound_commands
;
543 extern Lisp_Object Qmenu_item
;
545 /* An event header symbol HEAD may have a property named
546 Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
547 BASE is the base, unmodified version of HEAD, and MODIFIERS is the
548 mask of modifiers applied to it. If present, this is used to help
549 speed up parse_modifiers. */
550 Lisp_Object Qevent_symbol_element_mask
;
552 /* An unmodified event header BASE may have a property named
553 Qmodifier_cache, which is an alist mapping modifier masks onto
554 modified versions of BASE. If present, this helps speed up
556 Lisp_Object Qmodifier_cache
;
558 /* Symbols to use for parts of windows. */
559 Lisp_Object Qmode_line
;
560 Lisp_Object Qvertical_line
;
561 Lisp_Object Qvertical_scroll_bar
;
562 Lisp_Object Qmenu_bar
;
563 extern Lisp_Object Qleft_margin
, Qright_margin
;
564 extern Lisp_Object Qleft_fringe
, Qright_fringe
;
565 extern Lisp_Object QCmap
;
567 Lisp_Object
recursive_edit_unwind (), command_loop ();
568 Lisp_Object
Fthis_command_keys ();
569 Lisp_Object Qextended_command_history
;
570 EMACS_TIME
timer_check ();
572 extern Lisp_Object Vhistory_length
, Vtranslation_table_for_input
;
574 extern char *x_get_keysym_name ();
576 static void record_menu_key ();
577 static int echo_length ();
579 Lisp_Object Qpolling_period
;
581 /* List of absolute timers. Appears in order of next scheduled event. */
582 Lisp_Object Vtimer_list
;
584 /* List of idle time timers. Appears in order of next scheduled event. */
585 Lisp_Object Vtimer_idle_list
;
587 /* Incremented whenever a timer is run. */
590 extern Lisp_Object Vprint_level
, Vprint_length
;
592 /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt
594 EMACS_TIME
*input_available_clear_time
;
596 /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode.
597 Default is 1 if INTERRUPT_INPUT is defined. */
600 /* Nonzero while interrupts are temporarily deferred during redisplay. */
601 int interrupts_deferred
;
603 /* Nonzero means use ^S/^Q for flow control. */
606 /* Allow m- file to inhibit use of FIONREAD. */
607 #ifdef BROKEN_FIONREAD
611 /* We are unable to use interrupts if FIONREAD is not available,
612 so flush SIGIO so we won't try. */
613 #if !defined (FIONREAD)
619 /* If we support a window system, turn on the code to poll periodically
620 to detect C-g. It isn't actually used when doing interrupt input. */
621 #if defined(HAVE_WINDOW_SYSTEM) && !defined(USE_ASYNC_EVENTS)
622 #define POLL_FOR_INPUT
625 /* After a command is executed, if point is moved into a region that
626 has specific properties (e.g. composition, display), we adjust
627 point to the boundary of the region. But, if a command sets this
628 variable to non-nil, we suppress this point adjustment. This
629 variable is set to nil before reading a command. */
631 Lisp_Object Vdisable_point_adjustment
;
633 /* If non-nil, always disable point adjustment. */
635 Lisp_Object Vglobal_disable_point_adjustment
;
637 /* The time when Emacs started being idle. */
639 static EMACS_TIME timer_idleness_start_time
;
641 /* After Emacs stops being idle, this saves the last value
642 of timer_idleness_start_time from when it was idle. */
644 static EMACS_TIME timer_last_idleness_start_time
;
647 /* Global variable declarations. */
649 /* Flags for readable_events. */
650 #define READABLE_EVENTS_DO_TIMERS_NOW (1 << 0)
651 #define READABLE_EVENTS_FILTER_EVENTS (1 << 1)
652 #define READABLE_EVENTS_IGNORE_SQUEEZABLES (1 << 2)
654 /* Function for init_keyboard to call with no args (if nonzero). */
655 void (*keyboard_init_hook
) ();
657 static int read_avail_input
P_ ((int));
658 static void get_input_pending
P_ ((int *, int));
659 static int readable_events
P_ ((int));
660 static Lisp_Object read_char_x_menu_prompt
P_ ((int, Lisp_Object
*,
661 Lisp_Object
, int *));
662 static Lisp_Object
read_char_x_menu_prompt ();
663 static Lisp_Object read_char_minibuf_menu_prompt
P_ ((int, int,
665 static Lisp_Object make_lispy_event
P_ ((struct input_event
*));
667 static Lisp_Object make_lispy_movement
P_ ((struct frame
*, Lisp_Object
,
668 enum scroll_bar_part
,
669 Lisp_Object
, Lisp_Object
,
672 static Lisp_Object modify_event_symbol
P_ ((int, unsigned, Lisp_Object
,
673 Lisp_Object
, char **,
674 Lisp_Object
*, unsigned));
675 static Lisp_Object make_lispy_switch_frame
P_ ((Lisp_Object
));
676 static int parse_solitary_modifier
P_ ((Lisp_Object
));
677 static int parse_solitary_modifier ();
678 static void save_getcjmp
P_ ((jmp_buf));
679 static void save_getcjmp ();
680 static void restore_getcjmp
P_ ((jmp_buf));
681 static Lisp_Object apply_modifiers
P_ ((int, Lisp_Object
));
682 static void clear_event
P_ ((struct input_event
*));
683 static void any_kboard_state
P_ ((void));
684 static SIGTYPE interrupt_signal
P_ ((int signalnum
));
685 static void timer_start_idle
P_ ((void));
686 static void timer_stop_idle
P_ ((void));
687 static void timer_resume_idle
P_ ((void));
689 /* Nonzero means don't try to suspend even if the operating system seems
691 static int cannot_suspend
;
693 extern Lisp_Object Qidentity
, Qonly
;
695 /* Install the string STR as the beginning of the string of echoing,
696 so that it serves as a prompt for the next character.
697 Also start echoing. */
703 current_kboard
->echo_string
= str
;
704 current_kboard
->echo_after_prompt
= SCHARS (str
);
708 /* Add C to the echo string, if echoing is going on.
709 C can be a character, which is printed prettily ("M-C-x" and all that
710 jazz), or a symbol, whose name is printed. */
716 if (current_kboard
->immediate_echo
)
718 int size
= KEY_DESCRIPTION_SIZE
+ 100;
719 char *buffer
= (char *) alloca (size
);
721 Lisp_Object echo_string
;
723 echo_string
= current_kboard
->echo_string
;
725 /* If someone has passed us a composite event, use its head symbol. */
730 ptr
= push_key_description (XINT (c
), ptr
, 1);
732 else if (SYMBOLP (c
))
734 Lisp_Object name
= SYMBOL_NAME (c
);
735 int nbytes
= SBYTES (name
);
737 if (size
- (ptr
- buffer
) < nbytes
)
739 int offset
= ptr
- buffer
;
740 size
= max (2 * size
, size
+ nbytes
);
741 buffer
= (char *) alloca (size
);
742 ptr
= buffer
+ offset
;
745 ptr
+= copy_text (SDATA (name
), ptr
, nbytes
,
746 STRING_MULTIBYTE (name
), 1);
749 if ((NILP (echo_string
) || SCHARS (echo_string
) == 0)
752 const char *text
= " (Type ? for further options)";
753 int len
= strlen (text
);
755 if (size
- (ptr
- buffer
) < len
)
757 int offset
= ptr
- buffer
;
759 buffer
= (char *) alloca (size
);
760 ptr
= buffer
+ offset
;
763 bcopy (text
, ptr
, len
);
767 /* Replace a dash from echo_dash with a space, otherwise
768 add a space at the end as a separator between keys. */
769 if (STRINGP (echo_string
)
770 && SCHARS (echo_string
) > 1)
772 Lisp_Object last_char
, prev_char
, idx
;
774 idx
= make_number (SCHARS (echo_string
) - 2);
775 prev_char
= Faref (echo_string
, idx
);
777 idx
= make_number (SCHARS (echo_string
) - 1);
778 last_char
= Faref (echo_string
, idx
);
780 /* We test PREV_CHAR to make sure this isn't the echoing
782 if (XINT (last_char
) == '-' && XINT (prev_char
) != ' ')
783 Faset (echo_string
, idx
, make_number (' '));
785 echo_string
= concat2 (echo_string
, build_string (" "));
788 current_kboard
->echo_string
789 = concat2 (echo_string
, make_string (buffer
, ptr
- buffer
));
795 /* Temporarily add a dash to the end of the echo string if it's not
796 empty, so that it serves as a mini-prompt for the very next character. */
801 /* Do nothing if not echoing at all. */
802 if (NILP (current_kboard
->echo_string
))
805 if (!current_kboard
->immediate_echo
806 && SCHARS (current_kboard
->echo_string
) == 0)
809 /* Do nothing if we just printed a prompt. */
810 if (current_kboard
->echo_after_prompt
811 == SCHARS (current_kboard
->echo_string
))
814 /* Do nothing if we have already put a dash at the end. */
815 if (SCHARS (current_kboard
->echo_string
) > 1)
817 Lisp_Object last_char
, prev_char
, idx
;
819 idx
= make_number (SCHARS (current_kboard
->echo_string
) - 2);
820 prev_char
= Faref (current_kboard
->echo_string
, idx
);
822 idx
= make_number (SCHARS (current_kboard
->echo_string
) - 1);
823 last_char
= Faref (current_kboard
->echo_string
, idx
);
825 if (XINT (last_char
) == '-' && XINT (prev_char
) != ' ')
829 /* Put a dash at the end of the buffer temporarily,
830 but make it go away when the next character is added. */
831 current_kboard
->echo_string
= concat2 (current_kboard
->echo_string
,
836 /* Display the current echo string, and begin echoing if not already
842 if (!current_kboard
->immediate_echo
)
845 current_kboard
->immediate_echo
= 1;
847 for (i
= 0; i
< this_command_key_count
; i
++)
851 /* Set before_command_echo_length to the value that would
852 have been saved before the start of this subcommand in
853 command_loop_1, if we had already been echoing then. */
854 if (i
== this_single_command_key_start
)
855 before_command_echo_length
= echo_length ();
857 c
= XVECTOR (this_command_keys
)->contents
[i
];
858 if (! (EVENT_HAS_PARAMETERS (c
)
859 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
863 /* Set before_command_echo_length to the value that would
864 have been saved before the start of this subcommand in
865 command_loop_1, if we had already been echoing then. */
866 if (this_command_key_count
== this_single_command_key_start
)
867 before_command_echo_length
= echo_length ();
869 /* Put a dash at the end to invite the user to type more. */
874 message3_nolog (current_kboard
->echo_string
,
875 SBYTES (current_kboard
->echo_string
),
876 STRING_MULTIBYTE (current_kboard
->echo_string
));
879 /* Record in what buffer we echoed, and from which kboard. */
880 echo_message_buffer
= echo_area_buffer
[0];
881 echo_kboard
= current_kboard
;
883 if (waiting_for_input
&& !NILP (Vquit_flag
))
884 quit_throw_to_read_char ();
887 /* Turn off echoing, for the start of a new command. */
892 current_kboard
->immediate_echo
= 0;
893 current_kboard
->echo_after_prompt
= -1;
894 current_kboard
->echo_string
= Qnil
;
895 ok_to_echo_at_next_pause
= NULL
;
897 echo_message_buffer
= Qnil
;
900 /* Return the length of the current echo string. */
905 return (STRINGP (current_kboard
->echo_string
)
906 ? SCHARS (current_kboard
->echo_string
)
910 /* Truncate the current echo message to its first LEN chars.
911 This and echo_char get used by read_key_sequence when the user
912 switches frames while entering a key sequence. */
915 echo_truncate (nchars
)
918 if (STRINGP (current_kboard
->echo_string
))
919 current_kboard
->echo_string
920 = Fsubstring (current_kboard
->echo_string
,
921 make_number (0), make_number (nchars
));
922 truncate_echo_area (nchars
);
926 /* Functions for manipulating this_command_keys. */
928 add_command_key (key
)
931 #if 0 /* Not needed after we made Freset_this_command_lengths
932 do the job immediately. */
933 /* If reset-this-command-length was called recently, obey it now.
934 See the doc string of that function for an explanation of why. */
935 if (before_command_restore_flag
)
937 this_command_key_count
= before_command_key_count_1
;
938 if (this_command_key_count
< this_single_command_key_start
)
939 this_single_command_key_start
= this_command_key_count
;
940 echo_truncate (before_command_echo_length_1
);
941 before_command_restore_flag
= 0;
945 if (this_command_key_count
>= ASIZE (this_command_keys
))
946 this_command_keys
= larger_vector (this_command_keys
,
947 2 * ASIZE (this_command_keys
),
950 AREF (this_command_keys
, this_command_key_count
) = key
;
951 ++this_command_key_count
;
958 int count
= SPECPDL_INDEX ();
961 if (command_loop_level
> 0)
963 specbind (Qstandard_output
, Qt
);
964 specbind (Qstandard_input
, Qt
);
967 #ifdef HAVE_X_WINDOWS
968 /* The command loop has started an hourglass timer, so we have to
969 cancel it here, otherwise it will fire because the recursive edit
970 can take some time. Do not check for display_hourglass_p here,
971 because it could already be nil. */
975 /* This function may have been called from a debugger called from
976 within redisplay, for instance by Edebugging a function called
977 from fontification-functions. We want to allow redisplay in
978 the debugging session.
980 The recursive edit is left with a `(throw exit ...)'. The `exit'
981 tag is not caught anywhere in redisplay, i.e. when we leave the
982 recursive edit, the original redisplay leading to the recursive
983 edit will be unwound. The outcome should therefore be safe. */
984 specbind (Qinhibit_redisplay
, Qnil
);
987 val
= command_loop ();
989 Fsignal (Qquit
, Qnil
);
990 /* Handle throw from read_minibuf when using minibuffer
991 while it's active but we're in another window. */
993 Fsignal (Qerror
, Fcons (val
, Qnil
));
995 return unbind_to (count
, Qnil
);
998 /* When an auto-save happens, record the "time", and don't do again soon. */
1003 last_auto_save
= num_nonmacro_input_events
;
1006 /* Make an auto save happen as soon as possible at command level. */
1009 force_auto_save_soon ()
1011 last_auto_save
= - auto_save_interval
- 1;
1013 record_asynch_buffer_change ();
1016 DEFUN ("recursive-edit", Frecursive_edit
, Srecursive_edit
, 0, 0, "",
1017 doc
: /* Invoke the editor command loop recursively.
1018 To get out of the recursive edit, a command can do `(throw 'exit nil)';
1019 that tells this function to return.
1020 Alternatively, `(throw 'exit t)' makes this function signal an error.
1021 This function is called by the editor initialization to begin editing. */)
1024 int count
= SPECPDL_INDEX ();
1027 /* If we enter while input is blocked, don't lock up here.
1028 This may happen through the debugger during redisplay. */
1029 if (INPUT_BLOCKED_P
)
1032 command_loop_level
++;
1033 update_mode_lines
= 1;
1035 if (command_loop_level
1036 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
1037 buffer
= Fcurrent_buffer ();
1041 /* If we leave recursive_edit_1 below with a `throw' for instance,
1042 like it is done in the splash screen display, we have to
1043 make sure that we restore single_kboard as command_loop_1
1044 would have done if it were left normally. */
1045 record_unwind_protect (recursive_edit_unwind
,
1046 Fcons (buffer
, single_kboard
? Qt
: Qnil
));
1048 recursive_edit_1 ();
1049 return unbind_to (count
, Qnil
);
1053 recursive_edit_unwind (info
)
1056 if (BUFFERP (XCAR (info
)))
1057 Fset_buffer (XCAR (info
));
1059 if (NILP (XCDR (info
)))
1060 any_kboard_state ();
1062 single_kboard_state ();
1064 command_loop_level
--;
1065 update_mode_lines
= 1;
1074 #if 0 /* Theory: if there's anything in Vunread_command_events,
1075 it will right away be read by read_key_sequence,
1076 and then if we do switch KBOARDS, it will go into the side
1077 queue then. So we don't need to do anything special here -- rms. */
1078 if (CONSP (Vunread_command_events
))
1080 current_kboard
->kbd_queue
1081 = nconc2 (Vunread_command_events
, current_kboard
->kbd_queue
);
1082 current_kboard
->kbd_queue_has_data
= 1;
1084 Vunread_command_events
= Qnil
;
1090 /* Switch to the single-kboard state, making current_kboard
1091 the only KBOARD from which further input is accepted. */
1094 single_kboard_state ()
1101 /* If we're in single_kboard state for kboard KBOARD,
1105 not_single_kboard_state (kboard
)
1109 if (kboard
== current_kboard
)
1114 /* Maintain a stack of kboards, so other parts of Emacs
1115 can switch temporarily to the kboard of a given frame
1116 and then revert to the previous status. */
1121 struct kboard_stack
*next
;
1124 static struct kboard_stack
*kboard_stack
;
1127 push_frame_kboard (f
)
1131 struct kboard_stack
*p
1132 = (struct kboard_stack
*) xmalloc (sizeof (struct kboard_stack
));
1134 p
->next
= kboard_stack
;
1135 p
->kboard
= current_kboard
;
1138 current_kboard
= FRAME_KBOARD (f
);
1146 struct kboard_stack
*p
= kboard_stack
;
1147 current_kboard
= p
->kboard
;
1148 kboard_stack
= p
->next
;
1153 /* Handle errors that are not handled at inner levels
1154 by printing an error message and returning to the editor command loop. */
1160 Lisp_Object old_level
, old_length
;
1161 char macroerror
[50];
1163 #ifdef HAVE_X_WINDOWS
1164 if (display_hourglass_p
)
1165 cancel_hourglass ();
1168 if (!NILP (executing_kbd_macro
))
1170 if (executing_kbd_macro_iterations
== 1)
1171 sprintf (macroerror
, "After 1 kbd macro iteration: ");
1173 sprintf (macroerror
, "After %d kbd macro iterations: ",
1174 executing_kbd_macro_iterations
);
1179 Vstandard_output
= Qt
;
1180 Vstandard_input
= Qt
;
1181 Vexecuting_kbd_macro
= Qnil
;
1182 executing_kbd_macro
= Qnil
;
1183 current_kboard
->Vprefix_arg
= Qnil
;
1184 current_kboard
->Vlast_prefix_arg
= Qnil
;
1187 /* Avoid unquittable loop if data contains a circular list. */
1188 old_level
= Vprint_level
;
1189 old_length
= Vprint_length
;
1190 XSETFASTINT (Vprint_level
, 10);
1191 XSETFASTINT (Vprint_length
, 10);
1192 cmd_error_internal (data
, macroerror
);
1193 Vprint_level
= old_level
;
1194 Vprint_length
= old_length
;
1198 Vinhibit_quit
= Qnil
;
1200 if (command_loop_level
== 0 && minibuf_level
== 0)
1201 any_kboard_state ();
1204 return make_number (0);
1207 /* Take actions on handling an error. DATA is the data that describes
1210 CONTEXT is a C-string containing ASCII characters only which
1211 describes the context in which the error happened. If we need to
1212 generalize CONTEXT to allow multibyte characters, make it a Lisp
1216 cmd_error_internal (data
, context
)
1221 int kill_emacs_p
= 0;
1222 struct frame
*sf
= SELECTED_FRAME ();
1226 clear_message (1, 0);
1228 /* If the window system or terminal frame hasn't been initialized
1229 yet, or we're not interactive, it's best to dump this message out
1230 to stderr and exit. */
1231 if (!sf
->glyphs_initialized_p
1232 /* This is the case of the frame dumped with Emacs, when we're
1233 running under a window system. */
1234 || (!NILP (Vwindow_system
)
1235 && !inhibit_window_system
1236 && FRAME_TERMCAP_P (sf
))
1239 stream
= Qexternal_debugging_output
;
1245 message_log_maybe_newline ();
1250 /* The immediate context is not interesting for Quits,
1251 since they are asyncronous. */
1252 if (EQ (XCAR (data
), Qquit
))
1253 Vsignaling_function
= Qnil
;
1255 print_error_message (data
, stream
, context
, Vsignaling_function
);
1257 Vsignaling_function
= Qnil
;
1259 /* If the window system or terminal frame hasn't been initialized
1260 yet, or we're in -batch mode, this error should cause Emacs to exit. */
1264 Fkill_emacs (make_number (-1));
1268 Lisp_Object
command_loop_1 ();
1269 Lisp_Object
command_loop_2 ();
1270 Lisp_Object
top_level_1 ();
1272 /* Entry to editor-command-loop.
1273 This level has the catches for exiting/returning to editor command loop.
1274 It returns nil to exit recursive edit, t to abort it. */
1279 if (command_loop_level
> 0 || minibuf_level
> 0)
1282 val
= internal_catch (Qexit
, command_loop_2
, Qnil
);
1283 executing_kbd_macro
= Qnil
;
1289 internal_catch (Qtop_level
, top_level_1
, Qnil
);
1290 /* Reset single_kboard in case top-level set it while
1291 evaluating an -f option, or we are stuck there for some
1293 any_kboard_state ();
1294 internal_catch (Qtop_level
, command_loop_2
, Qnil
);
1295 executing_kbd_macro
= Qnil
;
1297 /* End of file in -batch run causes exit here. */
1303 /* Here we catch errors in execution of commands within the
1304 editing loop, and reenter the editing loop.
1305 When there is an error, cmd_error runs and returns a non-nil
1306 value to us. A value of nil means that command_loop_1 itself
1307 returned due to end of file (or end of kbd macro). */
1312 register Lisp_Object val
;
1315 val
= internal_condition_case (command_loop_1
, Qerror
, cmd_error
);
1316 while (!NILP (val
));
1324 return Feval (Vtop_level
);
1330 /* On entry to the outer level, run the startup file */
1331 if (!NILP (Vtop_level
))
1332 internal_condition_case (top_level_2
, Qerror
, cmd_error
);
1333 else if (!NILP (Vpurify_flag
))
1334 message ("Bare impure Emacs (standard Lisp code not loaded)");
1336 message ("Bare Emacs (standard Lisp code not loaded)");
1340 DEFUN ("top-level", Ftop_level
, Stop_level
, 0, 0, "",
1341 doc
: /* Exit all recursive editing levels. */)
1344 #ifdef HAVE_X_WINDOWS
1345 if (display_hourglass_p
)
1346 cancel_hourglass ();
1349 /* Unblock input if we enter with input blocked. This may happen if
1350 redisplay traps e.g. during tool-bar update with input blocked. */
1351 while (INPUT_BLOCKED_P
)
1354 return Fthrow (Qtop_level
, Qnil
);
1357 DEFUN ("exit-recursive-edit", Fexit_recursive_edit
, Sexit_recursive_edit
, 0, 0, "",
1358 doc
: /* Exit from the innermost recursive edit or minibuffer. */)
1361 if (command_loop_level
> 0 || minibuf_level
> 0)
1362 Fthrow (Qexit
, Qnil
);
1364 error ("No recursive edit is in progress");
1368 DEFUN ("abort-recursive-edit", Fabort_recursive_edit
, Sabort_recursive_edit
, 0, 0, "",
1369 doc
: /* Abort the command that requested this recursive edit or minibuffer input. */)
1372 if (command_loop_level
> 0 || minibuf_level
> 0)
1375 error ("No recursive edit is in progress");
1379 /* This is the actual command reading loop,
1380 sans error-handling encapsulation. */
1382 static int read_key_sequence
P_ ((Lisp_Object
*, int, Lisp_Object
,
1384 void safe_run_hooks
P_ ((Lisp_Object
));
1385 static void adjust_point_for_property
P_ ((int, int));
1387 /* Cancel hourglass from protect_unwind.
1389 #ifdef HAVE_X_WINDOWS
1391 cancel_hourglass_unwind (arg
)
1394 cancel_hourglass ();
1405 Lisp_Object keybuf
[30];
1409 struct buffer
*prev_buffer
= NULL
;
1411 int was_locked
= single_kboard
;
1413 int already_adjusted
;
1415 current_kboard
->Vprefix_arg
= Qnil
;
1416 current_kboard
->Vlast_prefix_arg
= Qnil
;
1417 Vdeactivate_mark
= Qnil
;
1418 waiting_for_input
= 0;
1422 this_command_key_count
= 0;
1423 this_command_key_count_reset
= 0;
1424 this_single_command_key_start
= 0;
1426 if (NILP (Vmemory_full
))
1428 /* Make sure this hook runs after commands that get errors and
1429 throw to top level. */
1430 /* Note that the value cell will never directly contain nil
1431 if the symbol is a local variable. */
1432 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1433 safe_run_hooks (Qpost_command_hook
);
1435 /* If displaying a message, resize the echo area window to fit
1436 that message's size exactly. */
1437 if (!NILP (echo_area_buffer
[0]))
1438 resize_echo_area_exactly ();
1440 if (!NILP (Vdeferred_action_list
))
1441 safe_run_hooks (Qdeferred_action_function
);
1444 Vmemory_full
= Qnil
;
1446 /* Do this after running Vpost_command_hook, for consistency. */
1447 current_kboard
->Vlast_command
= Vthis_command
;
1448 current_kboard
->Vreal_last_command
= real_this_command
;
1452 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
1455 /* Make sure the current window's buffer is selected. */
1456 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1457 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1459 /* Display any malloc warning that just came out. Use while because
1460 displaying one warning can cause another. */
1462 while (pending_malloc_warning
)
1463 display_malloc_warning ();
1467 Vdeactivate_mark
= Qnil
;
1469 /* If minibuffer on and echo area in use,
1470 wait a short time and redraw minibuffer. */
1473 && !NILP (echo_area_buffer
[0])
1474 && EQ (minibuf_window
, echo_area_window
)
1475 && NUMBERP (Vminibuffer_message_timeout
))
1477 /* Bind inhibit-quit to t so that C-g gets read in
1478 rather than quitting back to the minibuffer. */
1479 int count
= SPECPDL_INDEX ();
1480 specbind (Qinhibit_quit
, Qt
);
1482 Fsit_for (Vminibuffer_message_timeout
, Qnil
, Qnil
);
1483 /* Clear the echo area. */
1485 safe_run_hooks (Qecho_area_clear_hook
);
1487 unbind_to (count
, Qnil
);
1489 /* If a C-g came in before, treat it as input now. */
1490 if (!NILP (Vquit_flag
))
1493 Vunread_command_events
= Fcons (make_number (quit_char
), Qnil
);
1498 alloca (0); /* Cause a garbage collection now */
1499 /* Since we can free the most stuff here. */
1500 #endif /* C_ALLOCA */
1503 /* Select the frame that the last event came from. Usually,
1504 switch-frame events will take care of this, but if some lisp
1505 code swallows a switch-frame event, we'll fix things up here.
1506 Is this a good idea? */
1507 if (FRAMEP (internal_last_event_frame
)
1508 && !EQ (internal_last_event_frame
, selected_frame
))
1509 Fselect_frame (internal_last_event_frame
);
1511 /* If it has changed current-menubar from previous value,
1512 really recompute the menubar from the value. */
1513 if (! NILP (Vlucid_menu_bar_dirty_flag
)
1514 && !NILP (Ffboundp (Qrecompute_lucid_menubar
)))
1515 call0 (Qrecompute_lucid_menubar
);
1517 before_command_key_count
= this_command_key_count
;
1518 before_command_echo_length
= echo_length ();
1520 Vthis_command
= Qnil
;
1521 real_this_command
= Qnil
;
1522 Vthis_original_command
= Qnil
;
1524 /* Read next key sequence; i gets its length. */
1525 i
= read_key_sequence (keybuf
, sizeof keybuf
/ sizeof keybuf
[0],
1528 /* A filter may have run while we were reading the input. */
1529 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
1531 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1532 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1536 /* Now we have read a key sequence of length I,
1537 or else I is 0 and we found end of file. */
1539 if (i
== 0) /* End of file -- happens only in */
1540 return Qnil
; /* a kbd macro, at the end. */
1541 /* -1 means read_key_sequence got a menu that was rejected.
1542 Just loop around and read another command. */
1546 this_command_key_count
= 0;
1547 this_command_key_count_reset
= 0;
1548 this_single_command_key_start
= 0;
1552 last_command_char
= keybuf
[i
- 1];
1554 /* If the previous command tried to force a specific window-start,
1555 forget about that, in case this command moves point far away
1556 from that position. But also throw away beg_unchanged and
1557 end_unchanged information in that case, so that redisplay will
1558 update the whole window properly. */
1559 if (!NILP (XWINDOW (selected_window
)->force_start
))
1562 XWINDOW (selected_window
)->force_start
= Qnil
;
1563 b
= XBUFFER (XWINDOW (selected_window
)->buffer
);
1564 BUF_BEG_UNCHANGED (b
) = BUF_END_UNCHANGED (b
) = 0;
1567 cmd
= read_key_sequence_cmd
;
1568 if (!NILP (Vexecuting_kbd_macro
))
1570 if (!NILP (Vquit_flag
))
1572 Vexecuting_kbd_macro
= Qt
;
1573 QUIT
; /* Make some noise. */
1574 /* Will return since macro now empty. */
1578 /* Do redisplay processing after this command except in special
1579 cases identified below. */
1580 prev_buffer
= current_buffer
;
1581 prev_modiff
= MODIFF
;
1582 last_point_position
= PT
;
1583 XSETBUFFER (last_point_position_buffer
, prev_buffer
);
1585 /* By default, we adjust point to a boundary of a region that
1586 has such a property that should be treated intangible
1587 (e.g. composition, display). But, some commands will set
1588 this variable differently. */
1589 Vdisable_point_adjustment
= Qnil
;
1591 /* Process filters and timers may have messed with deactivate-mark.
1592 reset it before we execute the command. */
1593 Vdeactivate_mark
= Qnil
;
1595 /* Remap command through active keymaps */
1596 Vthis_original_command
= cmd
;
1600 if (cmd1
= Fcommand_remapping (cmd
), !NILP (cmd1
))
1604 /* Execute the command. */
1606 Vthis_command
= cmd
;
1607 real_this_command
= cmd
;
1608 /* Note that the value cell will never directly contain nil
1609 if the symbol is a local variable. */
1610 if (!NILP (Vpre_command_hook
) && !NILP (Vrun_hooks
))
1611 safe_run_hooks (Qpre_command_hook
);
1613 already_adjusted
= 0;
1615 if (NILP (Vthis_command
))
1617 /* nil means key is undefined. */
1618 Lisp_Object keys
= Fvector (i
, keybuf
);
1619 keys
= Fkey_description (keys
, Qnil
);
1621 message_with_string ("%s is undefined", keys
, 0);
1622 current_kboard
->defining_kbd_macro
= Qnil
;
1623 update_mode_lines
= 1;
1624 current_kboard
->Vprefix_arg
= Qnil
;
1628 if (NILP (current_kboard
->Vprefix_arg
) && ! no_direct
)
1630 /* In case we jump to directly_done. */
1631 Vcurrent_prefix_arg
= current_kboard
->Vprefix_arg
;
1633 /* Recognize some common commands in common situations and
1634 do them directly. */
1635 if (EQ (Vthis_command
, Qforward_char
) && PT
< ZV
)
1637 struct Lisp_Char_Table
*dp
1638 = window_display_table (XWINDOW (selected_window
));
1639 lose
= FETCH_CHAR (PT_BYTE
);
1641 if (! NILP (Vpost_command_hook
))
1642 /* Put this before calling adjust_point_for_property
1643 so it will only get called once in any case. */
1645 if (current_buffer
== prev_buffer
1646 && last_point_position
!= PT
1647 && NILP (Vdisable_point_adjustment
)
1648 && NILP (Vglobal_disable_point_adjustment
))
1649 adjust_point_for_property (last_point_position
, 0);
1650 already_adjusted
= 1;
1651 if (PT
== last_point_position
+ 1
1653 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1654 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1655 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1656 && (lose
>= 0x20 && lose
< 0x7f)))
1657 : (lose
>= 0x20 && lose
< 0x7f))
1658 /* To extract the case of continuation on
1659 wide-column characters. */
1660 && ASCII_BYTE_P (lose
)
1661 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1663 && (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1665 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1667 && !windows_or_buffers_changed
1668 && EQ (current_buffer
->selective_display
, Qnil
)
1669 && !detect_input_pending ()
1670 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1671 && NILP (Vexecuting_kbd_macro
))
1672 direct_output_forward_char (1);
1675 else if (EQ (Vthis_command
, Qbackward_char
) && PT
> BEGV
)
1677 struct Lisp_Char_Table
*dp
1678 = window_display_table (XWINDOW (selected_window
));
1680 lose
= FETCH_CHAR (PT_BYTE
);
1681 if (! NILP (Vpost_command_hook
))
1683 if (current_buffer
== prev_buffer
1684 && last_point_position
!= PT
1685 && NILP (Vdisable_point_adjustment
)
1686 && NILP (Vglobal_disable_point_adjustment
))
1687 adjust_point_for_property (last_point_position
, 0);
1688 already_adjusted
= 1;
1689 if (PT
== last_point_position
- 1
1691 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1692 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1693 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1694 && (lose
>= 0x20 && lose
< 0x7f)))
1695 : (lose
>= 0x20 && lose
< 0x7f))
1696 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1698 && (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1700 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1702 && !windows_or_buffers_changed
1703 && EQ (current_buffer
->selective_display
, Qnil
)
1704 && !detect_input_pending ()
1705 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1706 && NILP (Vexecuting_kbd_macro
))
1707 direct_output_forward_char (-1);
1710 else if (EQ (Vthis_command
, Qself_insert_command
)
1711 /* Try this optimization only on char keystrokes. */
1712 && NATNUMP (last_command_char
)
1713 && CHAR_VALID_P (XFASTINT (last_command_char
), 0))
1716 = translate_char (Vtranslation_table_for_input
,
1717 XFASTINT (last_command_char
));
1719 if (NILP (Vexecuting_kbd_macro
)
1720 && !EQ (minibuf_window
, selected_window
))
1722 if (!nonundocount
|| nonundocount
>= 20)
1730 lose
= ((XFASTINT (XWINDOW (selected_window
)->last_modified
)
1732 || (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1734 || (XFASTINT (XWINDOW (selected_window
)->last_point
)
1736 || MODIFF
<= SAVE_MODIFF
1737 || windows_or_buffers_changed
1738 || !EQ (current_buffer
->selective_display
, Qnil
)
1739 || detect_input_pending ()
1740 || !NILP (XWINDOW (selected_window
)->column_number_displayed
)
1741 || !NILP (Vexecuting_kbd_macro
));
1743 value
= internal_self_insert (c
, 0);
1748 if (! NILP (Vpost_command_hook
))
1749 /* Put this before calling adjust_point_for_property
1750 so it will only get called once in any case. */
1753 /* VALUE == 1 when AFTER-CHANGE functions are
1754 installed which is the case most of the time
1755 because FONT-LOCK installs one. */
1756 if (!lose
&& !value
)
1757 direct_output_for_insert (c
);
1762 /* Here for a command that isn't executed directly */
1765 #ifdef HAVE_X_WINDOWS
1766 int scount
= SPECPDL_INDEX ();
1768 if (display_hourglass_p
1769 && NILP (Vexecuting_kbd_macro
))
1771 record_unwind_protect (cancel_hourglass_unwind
, Qnil
);
1777 if (NILP (current_kboard
->Vprefix_arg
))
1779 Fcommand_execute (Vthis_command
, Qnil
, Qnil
, Qnil
);
1781 #ifdef HAVE_X_WINDOWS
1782 /* Do not check display_hourglass_p here, because
1783 Fcommand_execute could change it, but we should cancel
1784 hourglass cursor anyway.
1785 But don't cancel the hourglass within a macro
1786 just because a command in the macro finishes. */
1787 if (NILP (Vexecuting_kbd_macro
))
1788 unbind_to (scount
, Qnil
);
1793 current_kboard
->Vlast_prefix_arg
= Vcurrent_prefix_arg
;
1795 /* Note that the value cell will never directly contain nil
1796 if the symbol is a local variable. */
1797 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1798 safe_run_hooks (Qpost_command_hook
);
1800 /* If displaying a message, resize the echo area window to fit
1801 that message's size exactly. */
1802 if (!NILP (echo_area_buffer
[0]))
1803 resize_echo_area_exactly ();
1805 if (!NILP (Vdeferred_action_list
))
1806 safe_run_hooks (Qdeferred_action_function
);
1808 /* If there is a prefix argument,
1809 1) We don't want Vlast_command to be ``universal-argument''
1810 (that would be dumb), so don't set Vlast_command,
1811 2) we want to leave echoing on so that the prefix will be
1812 echoed as part of this key sequence, so don't call
1814 3) we want to leave this_command_key_count non-zero, so that
1815 read_char will realize that it is re-reading a character, and
1816 not echo it a second time.
1818 If the command didn't actually create a prefix arg,
1819 but is merely a frame event that is transparent to prefix args,
1820 then the above doesn't apply. */
1821 if (NILP (current_kboard
->Vprefix_arg
) || CONSP (last_command_char
))
1823 current_kboard
->Vlast_command
= Vthis_command
;
1824 current_kboard
->Vreal_last_command
= real_this_command
;
1826 this_command_key_count
= 0;
1827 this_command_key_count_reset
= 0;
1828 this_single_command_key_start
= 0;
1831 if (!NILP (current_buffer
->mark_active
) && !NILP (Vrun_hooks
))
1833 /* Setting transient-mark-mode to `only' is a way of
1834 turning it on for just one command. */
1836 if (EQ (Vtransient_mark_mode
, Qidentity
))
1837 Vtransient_mark_mode
= Qnil
;
1838 if (EQ (Vtransient_mark_mode
, Qonly
))
1839 Vtransient_mark_mode
= Qidentity
;
1841 if (!NILP (Vdeactivate_mark
) && !NILP (Vtransient_mark_mode
))
1843 /* We could also call `deactivate'mark'. */
1844 if (EQ (Vtransient_mark_mode
, Qlambda
))
1845 Vtransient_mark_mode
= Qnil
;
1848 current_buffer
->mark_active
= Qnil
;
1849 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
1852 else if (current_buffer
!= prev_buffer
|| MODIFF
!= prev_modiff
)
1853 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
1858 if (current_buffer
== prev_buffer
1859 && last_point_position
!= PT
1860 && NILP (Vdisable_point_adjustment
)
1861 && NILP (Vglobal_disable_point_adjustment
)
1862 && !already_adjusted
)
1863 adjust_point_for_property (last_point_position
, MODIFF
!= prev_modiff
);
1865 /* Install chars successfully executed in kbd macro. */
1867 if (!NILP (current_kboard
->defining_kbd_macro
)
1868 && NILP (current_kboard
->Vprefix_arg
))
1869 finalize_kbd_macro_chars ();
1873 any_kboard_state ();
1878 extern Lisp_Object Qcomposition
, Qdisplay
;
1880 /* Adjust point to a boundary of a region that has such a property
1881 that should be treated intangible. For the moment, we check
1882 `composition', `display' and `invisible' properties.
1883 LAST_PT is the last position of point. */
1885 extern Lisp_Object Qafter_string
, Qbefore_string
;
1886 extern Lisp_Object get_pos_property
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
1889 adjust_point_for_property (last_pt
, modified
)
1894 Lisp_Object val
, overlay
, tmp
;
1895 int check_composition
= 1, check_display
= 1, check_invisible
= 1;
1898 /* FIXME: cycling is probably not necessary because these properties
1899 can't be usefully combined anyway. */
1900 while (check_composition
|| check_display
|| check_invisible
)
1902 if (check_composition
1903 && PT
> BEGV
&& PT
< ZV
1904 && get_property_and_range (PT
, Qcomposition
, &val
, &beg
, &end
, Qnil
)
1905 && COMPOSITION_VALID_P (beg
, end
, val
)
1906 && beg
< PT
/* && end > PT <- It's always the case. */
1907 && (last_pt
<= beg
|| last_pt
>= end
))
1910 SET_PT (PT
< last_pt
? beg
: end
);
1911 check_display
= check_invisible
= 1;
1913 check_composition
= 0;
1915 && PT
> BEGV
&& PT
< ZV
1916 && !NILP (val
= get_char_property_and_overlay
1917 (make_number (PT
), Qdisplay
, Qnil
, &overlay
))
1918 && display_prop_intangible_p (val
)
1919 && (!OVERLAYP (overlay
)
1920 ? get_property_and_range (PT
, Qdisplay
, &val
, &beg
, &end
, Qnil
)
1921 : (beg
= OVERLAY_POSITION (OVERLAY_START (overlay
)),
1922 end
= OVERLAY_POSITION (OVERLAY_END (overlay
))))
1923 && (beg
< PT
/* && end > PT <- It's always the case. */
1924 || (beg
<= PT
&& STRINGP (val
) && SCHARS (val
) == 0)))
1927 SET_PT (PT
< last_pt
1928 ? (STRINGP (val
) && SCHARS (val
) == 0 ? beg
- 1 : beg
)
1930 check_composition
= check_invisible
= 1;
1933 if (check_invisible
&& PT
> BEGV
&& PT
< ZV
)
1935 int inv
, ellipsis
= 0;
1938 /* Find boundaries `beg' and `end' of the invisible area, if any. */
1940 && !NILP (val
= get_char_property_and_overlay
1941 (make_number (end
), Qinvisible
, Qnil
, &overlay
))
1942 && (inv
= TEXT_PROP_MEANS_INVISIBLE (val
)))
1944 ellipsis
= ellipsis
|| inv
> 1
1945 || (OVERLAYP (overlay
)
1946 && (!NILP (Foverlay_get (overlay
, Qafter_string
))
1947 || !NILP (Foverlay_get (overlay
, Qbefore_string
))));
1948 tmp
= Fnext_single_char_property_change
1949 (make_number (end
), Qinvisible
, Qnil
, Qnil
);
1950 end
= NATNUMP (tmp
) ? XFASTINT (tmp
) : ZV
;
1953 && !NILP (val
= get_char_property_and_overlay
1954 (make_number (beg
- 1), Qinvisible
, Qnil
, &overlay
))
1955 && (inv
= TEXT_PROP_MEANS_INVISIBLE (val
)))
1957 ellipsis
= ellipsis
|| inv
> 1
1958 || (OVERLAYP (overlay
)
1959 && (!NILP (Foverlay_get (overlay
, Qafter_string
))
1960 || !NILP (Foverlay_get (overlay
, Qbefore_string
))));
1961 tmp
= Fprevious_single_char_property_change
1962 (make_number (beg
), Qinvisible
, Qnil
, Qnil
);
1963 beg
= NATNUMP (tmp
) ? XFASTINT (tmp
) : BEGV
;
1966 /* Move away from the inside area. */
1967 if (beg
< PT
&& end
> PT
)
1969 SET_PT ((orig_pt
== PT
&& (last_pt
< beg
|| last_pt
> end
))
1970 /* We haven't moved yet (so we don't need to fear
1971 infinite-looping) and we were outside the range
1972 before (so either end of the range still corresponds
1973 to a move in the right direction): pretend we moved
1974 less than we actually did, so that we still have
1975 more freedom below in choosing which end of the range
1977 ? (orig_pt
= -1, PT
< last_pt
? end
: beg
)
1978 /* We either have moved already or the last point
1979 was already in the range: we don't get to choose
1980 which end of the range we have to go to. */
1981 : (PT
< last_pt
? beg
: end
));
1982 check_composition
= check_display
= 1;
1984 #if 0 /* This assertion isn't correct, because SET_PT may end up setting
1985 the point to something other than its argument, due to
1986 point-motion hooks, intangibility, etc. */
1987 xassert (PT
== beg
|| PT
== end
);
1990 /* Pretend the area doesn't exist if the buffer is not
1992 if (!modified
&& !ellipsis
&& beg
< end
)
1994 if (last_pt
== beg
&& PT
== end
&& end
< ZV
)
1995 (check_composition
= check_display
= 1, SET_PT (end
+ 1));
1996 else if (last_pt
== end
&& PT
== beg
&& beg
> BEGV
)
1997 (check_composition
= check_display
= 1, SET_PT (beg
- 1));
1998 else if (PT
== ((PT
< last_pt
) ? beg
: end
))
1999 /* We've already moved as far as we can. Trying to go
2000 to the other end would mean moving backwards and thus
2001 could lead to an infinite loop. */
2003 else if (val
= get_pos_property (make_number (PT
),
2005 TEXT_PROP_MEANS_INVISIBLE (val
)
2006 && (val
= get_pos_property
2007 (make_number (PT
== beg
? end
: beg
),
2009 !TEXT_PROP_MEANS_INVISIBLE (val
)))
2010 (check_composition
= check_display
= 1,
2011 SET_PT (PT
== beg
? end
: beg
));
2014 check_invisible
= 0;
2018 /* Subroutine for safe_run_hooks: run the hook HOOK. */
2021 safe_run_hooks_1 (hook
)
2024 return call1 (Vrun_hooks
, Vinhibit_quit
);
2027 /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */
2030 safe_run_hooks_error (data
)
2033 Lisp_Object args
[3];
2034 args
[0] = build_string ("Error in %s: %s");
2035 args
[1] = Vinhibit_quit
;
2038 return Fset (Vinhibit_quit
, Qnil
);
2041 /* If we get an error while running the hook, cause the hook variable
2042 to be nil. Also inhibit quits, so that C-g won't cause the hook
2043 to mysteriously evaporate. */
2046 safe_run_hooks (hook
)
2049 int count
= SPECPDL_INDEX ();
2050 specbind (Qinhibit_quit
, hook
);
2052 internal_condition_case (safe_run_hooks_1
, Qt
, safe_run_hooks_error
);
2054 unbind_to (count
, Qnil
);
2058 /* Number of seconds between polling for input. This is a Lisp
2059 variable that can be bound. */
2061 EMACS_INT polling_period
;
2063 /* Nonzero means polling for input is temporarily suppressed. */
2065 int poll_suppress_count
;
2067 /* Asynchronous timer for polling. */
2069 struct atimer
*poll_timer
;
2072 #ifdef POLL_FOR_INPUT
2074 /* Poll for input, so what we catch a C-g if it comes in. This
2075 function is called from x_make_frame_visible, see comment
2081 if (interrupt_input_blocked
== 0
2082 && !waiting_for_input
)
2083 read_avail_input (0);
2086 /* Timer callback function for poll_timer. TIMER is equal to
2090 poll_for_input (timer
)
2091 struct atimer
*timer
;
2093 if (poll_suppress_count
== 0)
2095 interrupt_input_pending
= 1;
2097 poll_for_input_1 ();
2101 #endif /* POLL_FOR_INPUT */
2103 /* Begin signals to poll for input, if they are appropriate.
2104 This function is called unconditionally from various places. */
2109 #ifdef POLL_FOR_INPUT
2110 if (read_socket_hook
&& !interrupt_input
)
2112 /* Turn alarm handling on unconditionally. It might have
2113 been turned off in process.c. */
2114 turn_on_atimers (1);
2116 /* If poll timer doesn't exist, are we need one with
2117 a different interval, start a new one. */
2118 if (poll_timer
== NULL
2119 || EMACS_SECS (poll_timer
->interval
) != polling_period
)
2121 EMACS_TIME interval
;
2124 cancel_atimer (poll_timer
);
2126 EMACS_SET_SECS_USECS (interval
, polling_period
, 0);
2127 poll_timer
= start_atimer (ATIMER_CONTINUOUS
, interval
,
2128 poll_for_input
, NULL
);
2131 /* Let the timer's callback function poll for input
2132 if this becomes zero. */
2133 --poll_suppress_count
;
2138 /* Nonzero if we are using polling to handle input asynchronously. */
2141 input_polling_used ()
2143 #ifdef POLL_FOR_INPUT
2144 return read_socket_hook
&& !interrupt_input
;
2150 /* Turn off polling. */
2155 #ifdef POLL_FOR_INPUT
2156 if (read_socket_hook
&& !interrupt_input
)
2157 ++poll_suppress_count
;
2161 /* Set the value of poll_suppress_count to COUNT
2162 and start or stop polling accordingly. */
2165 set_poll_suppress_count (count
)
2168 #ifdef POLL_FOR_INPUT
2169 if (count
== 0 && poll_suppress_count
!= 0)
2171 poll_suppress_count
= 1;
2174 else if (count
!= 0 && poll_suppress_count
== 0)
2178 poll_suppress_count
= count
;
2182 /* Bind polling_period to a value at least N.
2183 But don't decrease it. */
2186 bind_polling_period (n
)
2189 #ifdef POLL_FOR_INPUT
2190 int new = polling_period
;
2195 stop_other_atimers (poll_timer
);
2197 specbind (Qpolling_period
, make_number (new));
2198 /* Start a new alarm with the new period. */
2203 /* Apply the control modifier to CHARACTER. */
2209 /* Save the upper bits here. */
2210 int upper
= c
& ~0177;
2214 /* Everything in the columns containing the upper-case letters
2215 denotes a control character. */
2216 if (c
>= 0100 && c
< 0140)
2220 /* Set the shift modifier for a control char
2221 made from a shifted letter. But only for letters! */
2222 if (oc
>= 'A' && oc
<= 'Z')
2223 c
|= shift_modifier
;
2226 /* The lower-case letters denote control characters too. */
2227 else if (c
>= 'a' && c
<= 'z')
2230 /* Include the bits for control and shift
2231 only if the basic ASCII code can't indicate them. */
2235 /* Replace the high bits. */
2236 c
|= (upper
& ~ctrl_modifier
);
2241 /* Display the help-echo property of the character after the mouse pointer.
2242 Either show it in the echo area, or call show-help-function to display
2243 it by other means (maybe in a tooltip).
2245 If HELP is nil, that means clear the previous help echo.
2247 If HELP is a string, display that string. If HELP is a function,
2248 call it with OBJECT and POS as arguments; the function should
2249 return a help string or nil for none. For all other types of HELP,
2250 evaluate it to obtain a string.
2252 WINDOW is the window in which the help was generated, if any.
2253 It is nil if not in a window.
2255 If OBJECT is a buffer, POS is the position in the buffer where the
2256 `help-echo' text property was found.
2258 If OBJECT is an overlay, that overlay has a `help-echo' property,
2259 and POS is the position in the overlay's buffer under the mouse.
2261 If OBJECT is a string (an overlay string or a string displayed with
2262 the `display' property). POS is the position in that string under
2265 OK_TO_OVERWRITE_KEYSTROKE_ECHO non-zero means it's okay if the help
2266 echo overwrites a keystroke echo currently displayed in the echo
2269 Note: this function may only be called with HELP nil or a string
2270 from X code running asynchronously. */
2273 show_help_echo (help
, window
, object
, pos
, ok_to_overwrite_keystroke_echo
)
2274 Lisp_Object help
, window
, object
, pos
;
2275 int ok_to_overwrite_keystroke_echo
;
2277 if (!NILP (help
) && !STRINGP (help
))
2279 if (FUNCTIONP (help
))
2281 Lisp_Object args
[4];
2286 help
= safe_call (4, args
);
2289 help
= safe_eval (help
);
2291 if (!STRINGP (help
))
2296 if (!noninteractive
&& STRINGP (help
))
2297 help
= call1 (Qmouse_fixup_help_message
, help
);
2300 if (STRINGP (help
) || NILP (help
))
2302 if (!NILP (Vshow_help_function
))
2303 call1 (Vshow_help_function
, help
);
2304 else if (/* Don't overwrite minibuffer contents. */
2305 !MINI_WINDOW_P (XWINDOW (selected_window
))
2306 /* Don't overwrite a keystroke echo. */
2307 && (NILP (echo_message_buffer
)
2308 || ok_to_overwrite_keystroke_echo
)
2309 /* Don't overwrite a prompt. */
2310 && !cursor_in_echo_area
)
2314 int count
= SPECPDL_INDEX ();
2316 if (!help_echo_showing_p
)
2317 Vpre_help_message
= current_message ();
2319 specbind (Qmessage_truncate_lines
, Qt
);
2320 message3_nolog (help
, SBYTES (help
),
2321 STRING_MULTIBYTE (help
));
2322 unbind_to (count
, Qnil
);
2324 else if (STRINGP (Vpre_help_message
))
2326 message3_nolog (Vpre_help_message
,
2327 SBYTES (Vpre_help_message
),
2328 STRING_MULTIBYTE (Vpre_help_message
));
2329 Vpre_help_message
= Qnil
;
2335 help_echo_showing_p
= STRINGP (help
);
2341 /* Input of single characters from keyboard */
2343 Lisp_Object
print_help ();
2344 static Lisp_Object
kbd_buffer_get_event ();
2345 static void record_char ();
2348 static jmp_buf wrong_kboard_jmpbuf
;
2351 #define STOP_POLLING \
2352 do { if (! polling_stopped_here) stop_polling (); \
2353 polling_stopped_here = 1; } while (0)
2355 #define RESUME_POLLING \
2356 do { if (polling_stopped_here) start_polling (); \
2357 polling_stopped_here = 0; } while (0)
2359 /* read a character from the keyboard; call the redisplay if needed */
2360 /* commandflag 0 means do not do auto-saving, but do do redisplay.
2361 -1 means do not do redisplay, but do do autosaving.
2364 /* The arguments MAPS and NMAPS are for menu prompting.
2365 MAPS is an array of keymaps; NMAPS is the length of MAPS.
2367 PREV_EVENT is the previous input event, or nil if we are reading
2368 the first event of a key sequence (or not reading a key sequence).
2369 If PREV_EVENT is t, that is a "magic" value that says
2370 not to run input methods, but in other respects to act as if
2371 not reading a key sequence.
2373 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
2374 if we used a mouse menu to read the input, or zero otherwise. If
2375 USED_MOUSE_MENU is null, we don't dereference it.
2377 Value is t if we showed a menu and the user rejected it. */
2380 read_char (commandflag
, nmaps
, maps
, prev_event
, used_mouse_menu
)
2384 Lisp_Object prev_event
;
2385 int *used_mouse_menu
;
2387 volatile Lisp_Object c
;
2389 jmp_buf local_getcjmp
;
2391 volatile int key_already_recorded
= 0;
2392 Lisp_Object tem
, save
;
2393 volatile Lisp_Object previous_echo_area_message
;
2394 volatile Lisp_Object also_record
;
2395 volatile int reread
;
2396 struct gcpro gcpro1
, gcpro2
;
2397 int polling_stopped_here
= 0;
2401 #if 0 /* This was commented out as part of fixing echo for C-u left. */
2402 before_command_key_count
= this_command_key_count
;
2403 before_command_echo_length
= echo_length ();
2406 previous_echo_area_message
= Qnil
;
2408 GCPRO2 (c
, previous_echo_area_message
);
2413 if (CONSP (Vunread_post_input_method_events
))
2415 c
= XCAR (Vunread_post_input_method_events
);
2416 Vunread_post_input_method_events
2417 = XCDR (Vunread_post_input_method_events
);
2419 /* Undo what read_char_x_menu_prompt did when it unread
2420 additional keys returned by Fx_popup_menu. */
2422 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
)))
2430 if (unread_command_char
!= -1)
2432 XSETINT (c
, unread_command_char
);
2433 unread_command_char
= -1;
2439 if (CONSP (Vunread_command_events
))
2441 c
= XCAR (Vunread_command_events
);
2442 Vunread_command_events
= XCDR (Vunread_command_events
);
2444 /* Undo what read_char_x_menu_prompt did when it unread
2445 additional keys returned by Fx_popup_menu. */
2447 && EQ (XCDR (c
), Qdisabled
)
2448 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
))))
2451 /* If the queued event is something that used the mouse,
2452 set used_mouse_menu accordingly. */
2454 && (EQ (c
, Qtool_bar
) || EQ (c
, Qmenu_bar
)))
2455 *used_mouse_menu
= 1;
2458 goto reread_for_input_method
;
2461 if (CONSP (Vunread_input_method_events
))
2463 c
= XCAR (Vunread_input_method_events
);
2464 Vunread_input_method_events
= XCDR (Vunread_input_method_events
);
2466 /* Undo what read_char_x_menu_prompt did when it unread
2467 additional keys returned by Fx_popup_menu. */
2469 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
)))
2473 goto reread_for_input_method
;
2476 this_command_key_count_reset
= 0;
2478 if (!NILP (Vexecuting_kbd_macro
))
2480 /* We set this to Qmacro; since that's not a frame, nobody will
2481 try to switch frames on us, and the selected window will
2484 Since this event came from a macro, it would be misleading to
2485 leave internal_last_event_frame set to wherever the last
2486 real event came from. Normally, a switch-frame event selects
2487 internal_last_event_frame after each command is read, but
2488 events read from a macro should never cause a new frame to be
2490 Vlast_event_frame
= internal_last_event_frame
= Qmacro
;
2492 /* Exit the macro if we are at the end.
2493 Also, some things replace the macro with t
2494 to force an early exit. */
2495 if (EQ (Vexecuting_kbd_macro
, Qt
)
2496 || executing_kbd_macro_index
>= XFASTINT (Flength (Vexecuting_kbd_macro
)))
2502 c
= Faref (Vexecuting_kbd_macro
, make_number (executing_kbd_macro_index
));
2503 if (STRINGP (Vexecuting_kbd_macro
)
2504 && (XINT (c
) & 0x80) && (XUINT (c
) <= 0xff))
2505 XSETFASTINT (c
, CHAR_META
| (XINT (c
) & ~0x80));
2507 executing_kbd_macro_index
++;
2512 if (!NILP (unread_switch_frame
))
2514 c
= unread_switch_frame
;
2515 unread_switch_frame
= Qnil
;
2517 /* This event should make it into this_command_keys, and get echoed
2518 again, so we do not set `reread'. */
2522 /* if redisplay was requested */
2523 if (commandflag
>= 0)
2525 /* If there is pending input, process any events which are not
2526 user-visible, such as X selection_request events. */
2528 || detect_input_pending_run_timers (0))
2529 swallow_events (0); /* may clear input_pending */
2531 /* Redisplay if no pending input. */
2532 while (!input_pending
)
2534 if (help_echo_showing_p
&& !EQ (selected_window
, minibuf_window
))
2535 redisplay_preserve_echo_area (5);
2540 /* Normal case: no input arrived during redisplay. */
2543 /* Input arrived and pre-empted redisplay.
2544 Process any events which are not user-visible. */
2546 /* If that cleared input_pending, try again to redisplay. */
2550 /* Message turns off echoing unless more keystrokes turn it on again.
2552 The code in 20.x for the condition was
2554 1. echo_area_glyphs && *echo_area_glyphs
2555 2. && echo_area_glyphs != current_kboard->echobuf
2556 3. && ok_to_echo_at_next_pause != echo_area_glyphs
2558 (1) means there's a current message displayed
2560 (2) means it's not the message from echoing from the current
2563 (3) There's only one place in 20.x where ok_to_echo_at_next_pause
2564 is set to a non-null value. This is done in read_char and it is
2565 set to echo_area_glyphs after a call to echo_char. That means
2566 ok_to_echo_at_next_pause is either null or
2567 current_kboard->echobuf with the appropriate current_kboard at
2570 So, condition (3) means in clear text ok_to_echo_at_next_pause
2571 must be either null, or the current message isn't from echoing at
2572 all, or it's from echoing from a different kboard than the
2575 if (/* There currently is something in the echo area. */
2576 !NILP (echo_area_buffer
[0])
2577 && (/* And it's either not from echoing. */
2578 !EQ (echo_area_buffer
[0], echo_message_buffer
)
2579 /* Or it's an echo from a different kboard. */
2580 || echo_kboard
!= current_kboard
2581 /* Or we explicitly allow overwriting whatever there is. */
2582 || ok_to_echo_at_next_pause
== NULL
))
2587 /* Try reading a character via menu prompting in the minibuf.
2588 Try this before the sit-for, because the sit-for
2589 would do the wrong thing if we are supposed to do
2590 menu prompting. If EVENT_HAS_PARAMETERS then we are reading
2591 after a mouse event so don't try a minibuf menu. */
2593 if (nmaps
> 0 && INTERACTIVE
2594 && !NILP (prev_event
) && ! EVENT_HAS_PARAMETERS (prev_event
)
2595 /* Don't bring up a menu if we already have another event. */
2596 && NILP (Vunread_command_events
)
2597 && unread_command_char
< 0
2598 && !detect_input_pending_run_timers (0))
2600 c
= read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
);
2603 key_already_recorded
= 1;
2608 /* Make a longjmp point for quits to use, but don't alter getcjmp just yet.
2609 We will do that below, temporarily for short sections of code,
2610 when appropriate. local_getcjmp must be in effect
2611 around any call to sit_for or kbd_buffer_get_event;
2612 it *must not* be in effect when we call redisplay. */
2614 if (_setjmp (local_getcjmp
))
2616 /* We must have saved the outer value of getcjmp here,
2617 so restore it now. */
2618 restore_getcjmp (save_jump
);
2619 XSETINT (c
, quit_char
);
2620 internal_last_event_frame
= selected_frame
;
2621 Vlast_event_frame
= internal_last_event_frame
;
2622 /* If we report the quit char as an event,
2623 don't do so more than once. */
2624 if (!NILP (Vinhibit_quit
))
2629 KBOARD
*kb
= FRAME_KBOARD (XFRAME (selected_frame
));
2630 if (kb
!= current_kboard
)
2632 Lisp_Object link
= kb
->kbd_queue
;
2633 /* We shouldn't get here if we were in single-kboard mode! */
2638 while (CONSP (XCDR (link
)))
2640 if (!NILP (XCDR (link
)))
2644 kb
->kbd_queue
= Fcons (c
, Qnil
);
2646 XSETCDR (link
, Fcons (c
, Qnil
));
2647 kb
->kbd_queue_has_data
= 1;
2648 current_kboard
= kb
;
2649 /* This is going to exit from read_char
2650 so we had better get rid of this frame's stuff. */
2652 longjmp (wrong_kboard_jmpbuf
, 1);
2659 timer_start_idle ();
2661 /* If in middle of key sequence and minibuffer not active,
2662 start echoing if enough time elapses. */
2664 if (minibuf_level
== 0
2665 && !current_kboard
->immediate_echo
2666 && this_command_key_count
> 0
2668 && (FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
2669 && NILP (Fzerop (Vecho_keystrokes
))
2670 && (/* No message. */
2671 NILP (echo_area_buffer
[0])
2672 /* Or empty message. */
2673 || (BUF_BEG (XBUFFER (echo_area_buffer
[0]))
2674 == BUF_Z (XBUFFER (echo_area_buffer
[0])))
2675 /* Or already echoing from same kboard. */
2676 || (echo_kboard
&& ok_to_echo_at_next_pause
== echo_kboard
)
2677 /* Or not echoing before and echoing allowed. */
2678 || (!echo_kboard
&& ok_to_echo_at_next_pause
)))
2682 /* After a mouse event, start echoing right away.
2683 This is because we are probably about to display a menu,
2684 and we don't want to delay before doing so. */
2685 if (EVENT_HAS_PARAMETERS (prev_event
))
2690 double duration
= extract_float (Vecho_keystrokes
);
2691 sec
= (int) duration
;
2692 usec
= (duration
- sec
) * 1000000;
2693 save_getcjmp (save_jump
);
2694 restore_getcjmp (local_getcjmp
);
2695 tem0
= sit_for (sec
, usec
, 1, 1, 0);
2696 restore_getcjmp (save_jump
);
2698 && ! CONSP (Vunread_command_events
))
2703 /* Maybe auto save due to number of keystrokes. */
2705 if (commandflag
!= 0
2706 && auto_save_interval
> 0
2707 && num_nonmacro_input_events
- last_auto_save
> max (auto_save_interval
, 20)
2708 && !detect_input_pending_run_timers (0))
2710 Fdo_auto_save (Qnil
, Qnil
);
2711 /* Hooks can actually change some buffers in auto save. */
2715 /* Try reading using an X menu.
2716 This is never confused with reading using the minibuf
2717 because the recursive call of read_char in read_char_minibuf_menu_prompt
2718 does not pass on any keymaps. */
2720 if (nmaps
> 0 && INTERACTIVE
2721 && !NILP (prev_event
)
2722 && EVENT_HAS_PARAMETERS (prev_event
)
2723 && !EQ (XCAR (prev_event
), Qmenu_bar
)
2724 && !EQ (XCAR (prev_event
), Qtool_bar
)
2725 /* Don't bring up a menu if we already have another event. */
2726 && NILP (Vunread_command_events
)
2727 && unread_command_char
< 0)
2729 c
= read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
);
2731 /* Now that we have read an event, Emacs is not idle. */
2737 /* Maybe autosave and/or garbage collect due to idleness. */
2739 if (INTERACTIVE
&& NILP (c
))
2741 int delay_level
, buffer_size
;
2743 /* Slow down auto saves logarithmically in size of current buffer,
2744 and garbage collect while we're at it. */
2745 if (! MINI_WINDOW_P (XWINDOW (selected_window
)))
2746 last_non_minibuf_size
= Z
- BEG
;
2747 buffer_size
= (last_non_minibuf_size
>> 8) + 1;
2749 while (buffer_size
> 64)
2750 delay_level
++, buffer_size
-= buffer_size
>> 2;
2751 if (delay_level
< 4) delay_level
= 4;
2752 /* delay_level is 4 for files under around 50k, 7 at 100k,
2753 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */
2755 /* Auto save if enough time goes by without input. */
2756 if (commandflag
!= 0
2757 && num_nonmacro_input_events
> last_auto_save
2758 && INTEGERP (Vauto_save_timeout
)
2759 && XINT (Vauto_save_timeout
) > 0)
2763 save_getcjmp (save_jump
);
2764 restore_getcjmp (local_getcjmp
);
2765 tem0
= sit_for (delay_level
* XFASTINT (Vauto_save_timeout
) / 4,
2767 restore_getcjmp (save_jump
);
2770 && ! CONSP (Vunread_command_events
))
2772 Fdo_auto_save (Qnil
, Qnil
);
2774 /* If we have auto-saved and there is still no input
2775 available, garbage collect if there has been enough
2776 consing going on to make it worthwhile. */
2777 if (!detect_input_pending_run_timers (0)
2778 && consing_since_gc
> gc_cons_threshold
/ 2)
2779 Fgarbage_collect ();
2786 /* If this has become non-nil here, it has been set by a timer
2787 or sentinel or filter. */
2788 if (CONSP (Vunread_command_events
))
2790 c
= XCAR (Vunread_command_events
);
2791 Vunread_command_events
= XCDR (Vunread_command_events
);
2794 /* Read something from current KBOARD's side queue, if possible. */
2798 if (current_kboard
->kbd_queue_has_data
)
2800 if (!CONSP (current_kboard
->kbd_queue
))
2802 c
= XCAR (current_kboard
->kbd_queue
);
2803 current_kboard
->kbd_queue
2804 = XCDR (current_kboard
->kbd_queue
);
2805 if (NILP (current_kboard
->kbd_queue
))
2806 current_kboard
->kbd_queue_has_data
= 0;
2807 input_pending
= readable_events (0);
2808 if (EVENT_HAS_PARAMETERS (c
)
2809 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qswitch_frame
))
2810 internal_last_event_frame
= XCAR (XCDR (c
));
2811 Vlast_event_frame
= internal_last_event_frame
;
2816 /* If current_kboard's side queue is empty check the other kboards.
2817 If one of them has data that we have not yet seen here,
2818 switch to it and process the data waiting for it.
2820 Note: if the events queued up for another kboard
2821 have already been seen here, and therefore are not a complete command,
2822 the kbd_queue_has_data field is 0, so we skip that kboard here.
2823 That's to avoid an infinite loop switching between kboards here. */
2824 if (NILP (c
) && !single_kboard
)
2827 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
2828 if (kb
->kbd_queue_has_data
)
2830 current_kboard
= kb
;
2831 /* This is going to exit from read_char
2832 so we had better get rid of this frame's stuff. */
2834 longjmp (wrong_kboard_jmpbuf
, 1);
2843 /* Finally, we read from the main queue,
2844 and if that gives us something we can't use yet, we put it on the
2845 appropriate side queue and try again. */
2851 /* Actually read a character, waiting if necessary. */
2852 save_getcjmp (save_jump
);
2853 restore_getcjmp (local_getcjmp
);
2854 timer_start_idle ();
2855 c
= kbd_buffer_get_event (&kb
, used_mouse_menu
);
2856 restore_getcjmp (save_jump
);
2859 if (! NILP (c
) && (kb
!= current_kboard
))
2861 Lisp_Object link
= kb
->kbd_queue
;
2864 while (CONSP (XCDR (link
)))
2866 if (!NILP (XCDR (link
)))
2870 kb
->kbd_queue
= Fcons (c
, Qnil
);
2872 XSETCDR (link
, Fcons (c
, Qnil
));
2873 kb
->kbd_queue_has_data
= 1;
2877 current_kboard
= kb
;
2878 /* This is going to exit from read_char
2879 so we had better get rid of this frame's stuff. */
2881 longjmp (wrong_kboard_jmpbuf
, 1);
2886 /* Terminate Emacs in batch mode if at eof. */
2887 if (noninteractive
&& INTEGERP (c
) && XINT (c
) < 0)
2888 Fkill_emacs (make_number (1));
2892 /* Add in any extra modifiers, where appropriate. */
2893 if ((extra_keyboard_modifiers
& CHAR_CTL
)
2894 || ((extra_keyboard_modifiers
& 0177) < ' '
2895 && (extra_keyboard_modifiers
& 0177) != 0))
2896 XSETINT (c
, make_ctrl_char (XINT (c
)));
2898 /* Transfer any other modifier bits directly from
2899 extra_keyboard_modifiers to c. Ignore the actual character code
2900 in the low 16 bits of extra_keyboard_modifiers. */
2901 XSETINT (c
, XINT (c
) | (extra_keyboard_modifiers
& ~0xff7f & ~CHAR_CTL
));
2911 if (commandflag
>= 0
2912 && !input_pending
&& !detect_input_pending_run_timers (0))
2920 /* Buffer switch events are only for internal wakeups
2921 so don't show them to the user.
2922 Also, don't record a key if we already did. */
2923 if (BUFFERP (c
) || key_already_recorded
)
2926 /* Process special events within read_char
2927 and loop around to read another event. */
2930 tem
= access_keymap (get_keymap (Vspecial_event_map
, 0, 1), c
, 0, 0, 1);
2935 int was_locked
= single_kboard
;
2937 last_input_char
= c
;
2938 Fcommand_execute (tem
, Qnil
, Fvector (1, &last_input_char
), Qt
);
2940 if (CONSP (c
) && EQ (XCAR (c
), Qselect_window
))
2941 /* We stopped being idle for this event; undo that. This
2942 prevents automatic window selection (under
2943 mouse_autoselect_window from acting as a real input event, for
2944 example banishing the mouse under mouse-avoidance-mode. */
2945 timer_resume_idle ();
2947 /* Resume allowing input from any kboard, if that was true before. */
2949 any_kboard_state ();
2954 /* Handle things that only apply to characters. */
2957 /* If kbd_buffer_get_event gave us an EOF, return that. */
2961 if ((STRINGP (Vkeyboard_translate_table
)
2962 && SCHARS (Vkeyboard_translate_table
) > (unsigned) XFASTINT (c
))
2963 || (VECTORP (Vkeyboard_translate_table
)
2964 && XVECTOR (Vkeyboard_translate_table
)->size
> (unsigned) XFASTINT (c
))
2965 || CHAR_TABLE_P (Vkeyboard_translate_table
))
2968 d
= Faref (Vkeyboard_translate_table
, c
);
2969 /* nil in keyboard-translate-table means no translation. */
2975 /* If this event is a mouse click in the menu bar,
2976 return just menu-bar for now. Modify the mouse click event
2977 so we won't do this twice, then queue it up. */
2978 if (EVENT_HAS_PARAMETERS (c
)
2980 && CONSP (EVENT_START (c
))
2981 && CONSP (XCDR (EVENT_START (c
))))
2985 posn
= POSN_POSN (EVENT_START (c
));
2986 /* Handle menu-bar events:
2987 insert the dummy prefix event `menu-bar'. */
2988 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
2990 /* Change menu-bar to (menu-bar) as the event "position". */
2991 POSN_SET_POSN (EVENT_START (c
), Fcons (posn
, Qnil
));
2994 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
2999 /* Store these characters into recent_keys, the dribble file if any,
3000 and the keyboard macro being defined, if any. */
3002 if (! NILP (also_record
))
3003 record_char (also_record
);
3005 /* Wipe the echo area.
3006 But first, if we are about to use an input method,
3007 save the echo area contents for it to refer to. */
3009 && ! NILP (Vinput_method_function
)
3010 && (unsigned) XINT (c
) >= ' '
3011 && (unsigned) XINT (c
) != 127
3012 && (unsigned) XINT (c
) < 256)
3014 previous_echo_area_message
= Fcurrent_message ();
3015 Vinput_method_previous_message
= previous_echo_area_message
;
3018 /* Now wipe the echo area, except for help events which do their
3019 own stuff with the echo area. */
3021 || (!(EQ (Qhelp_echo
, XCAR (c
)))
3022 && !(EQ (Qswitch_frame
, XCAR (c
)))))
3024 if (!NILP (echo_area_buffer
[0]))
3025 safe_run_hooks (Qecho_area_clear_hook
);
3026 clear_message (1, 0);
3029 reread_for_input_method
:
3031 /* Pass this to the input method, if appropriate. */
3033 && ! NILP (Vinput_method_function
)
3034 /* Don't run the input method within a key sequence,
3035 after the first event of the key sequence. */
3036 && NILP (prev_event
)
3037 && (unsigned) XINT (c
) >= ' '
3038 && (unsigned) XINT (c
) != 127
3039 && (unsigned) XINT (c
) < 256)
3042 int key_count
, key_count_reset
;
3043 struct gcpro gcpro1
;
3044 int count
= SPECPDL_INDEX ();
3046 /* Save the echo status. */
3047 int saved_immediate_echo
= current_kboard
->immediate_echo
;
3048 struct kboard
*saved_ok_to_echo
= ok_to_echo_at_next_pause
;
3049 Lisp_Object saved_echo_string
= current_kboard
->echo_string
;
3050 int saved_echo_after_prompt
= current_kboard
->echo_after_prompt
;
3053 if (before_command_restore_flag
)
3055 this_command_key_count
= before_command_key_count_1
;
3056 if (this_command_key_count
< this_single_command_key_start
)
3057 this_single_command_key_start
= this_command_key_count
;
3058 echo_truncate (before_command_echo_length_1
);
3059 before_command_restore_flag
= 0;
3063 /* Save the this_command_keys status. */
3064 key_count
= this_command_key_count
;
3065 key_count_reset
= this_command_key_count_reset
;
3068 keys
= Fcopy_sequence (this_command_keys
);
3073 /* Clear out this_command_keys. */
3074 this_command_key_count
= 0;
3075 this_command_key_count_reset
= 0;
3077 /* Now wipe the echo area. */
3078 if (!NILP (echo_area_buffer
[0]))
3079 safe_run_hooks (Qecho_area_clear_hook
);
3080 clear_message (1, 0);
3083 /* If we are not reading a key sequence,
3084 never use the echo area. */
3087 specbind (Qinput_method_use_echo_area
, Qt
);
3090 /* Call the input method. */
3091 tem
= call1 (Vinput_method_function
, c
);
3093 tem
= unbind_to (count
, tem
);
3095 /* Restore the saved echoing state
3096 and this_command_keys state. */
3097 this_command_key_count
= key_count
;
3098 this_command_key_count_reset
= key_count_reset
;
3100 this_command_keys
= keys
;
3103 ok_to_echo_at_next_pause
= saved_ok_to_echo
;
3104 current_kboard
->echo_string
= saved_echo_string
;
3105 current_kboard
->echo_after_prompt
= saved_echo_after_prompt
;
3106 if (saved_immediate_echo
)
3111 /* The input method can return no events. */
3114 /* Bring back the previous message, if any. */
3115 if (! NILP (previous_echo_area_message
))
3116 message_with_string ("%s", previous_echo_area_message
, 0);
3119 /* It returned one event or more. */
3121 Vunread_post_input_method_events
3122 = nconc2 (XCDR (tem
), Vunread_post_input_method_events
);
3127 /* Display help if not echoing. */
3128 if (CONSP (c
) && EQ (XCAR (c
), Qhelp_echo
))
3130 /* (help-echo FRAME HELP WINDOW OBJECT POS). */
3131 Lisp_Object help
, object
, position
, window
, tem
;
3133 tem
= Fcdr (XCDR (c
));
3136 window
= Fcar (tem
);
3138 object
= Fcar (tem
);
3140 position
= Fcar (tem
);
3142 show_help_echo (help
, window
, object
, position
, 0);
3144 /* We stopped being idle for this event; undo that. */
3145 timer_resume_idle ();
3149 if (! reread
|| this_command_key_count
== 0
3150 || this_command_key_count_reset
)
3153 /* Don't echo mouse motion events. */
3154 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3155 && NILP (Fzerop (Vecho_keystrokes
))
3156 && ! (EVENT_HAS_PARAMETERS (c
)
3157 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
3160 if (! NILP (also_record
))
3161 echo_char (also_record
);
3162 /* Once we reread a character, echoing can happen
3163 the next time we pause to read a new one. */
3164 ok_to_echo_at_next_pause
= current_kboard
;
3167 /* Record this character as part of the current key. */
3168 add_command_key (c
);
3169 if (! NILP (also_record
))
3170 add_command_key (also_record
);
3173 last_input_char
= c
;
3176 /* Process the help character specially if enabled */
3177 if (!NILP (Vhelp_form
) && help_char_p (c
))
3180 count
= SPECPDL_INDEX ();
3182 record_unwind_protect (Fset_window_configuration
,
3183 Fcurrent_window_configuration (Qnil
));
3185 tem0
= Feval (Vhelp_form
);
3187 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
3191 c
= read_char (0, 0, 0, Qnil
, 0);
3192 while (BUFFERP (c
));
3193 /* Remove the help from the frame */
3194 unbind_to (count
, Qnil
);
3197 if (EQ (c
, make_number (040)))
3201 c
= read_char (0, 0, 0, Qnil
, 0);
3202 while (BUFFERP (c
));
3211 /* Record a key that came from a mouse menu.
3212 Record it for echoing, for this-command-keys, and so on. */
3218 /* Wipe the echo area. */
3219 clear_message (1, 0);
3224 before_command_key_count
= this_command_key_count
;
3225 before_command_echo_length
= echo_length ();
3228 /* Don't echo mouse motion events. */
3229 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3230 && NILP (Fzerop (Vecho_keystrokes
)))
3234 /* Once we reread a character, echoing can happen
3235 the next time we pause to read a new one. */
3236 ok_to_echo_at_next_pause
= 0;
3239 /* Record this character as part of the current key. */
3240 add_command_key (c
);
3242 /* Re-reading in the middle of a command */
3243 last_input_char
= c
;
3247 /* Return 1 if should recognize C as "the help character". */
3255 if (EQ (c
, Vhelp_char
))
3257 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCDR (tail
))
3258 if (EQ (c
, XCAR (tail
)))
3263 /* Record the input event C in various ways. */
3271 if (CONSP (c
) && (EQ (XCAR (c
), Qhelp_echo
) || EQ (XCAR (c
), Qmouse_movement
)))
3273 /* To avoid filling recent_keys with help-echo and mouse-movement
3274 events, we filter out repeated help-echo events, only store the
3275 first and last in a series of mouse-movement events, and don't
3276 store repeated help-echo events which are only separated by
3277 mouse-movement events. */
3279 Lisp_Object ev1
, ev2
, ev3
;
3282 if ((ix1
= recent_keys_index
- 1) < 0)
3283 ix1
= NUM_RECENT_KEYS
- 1;
3284 ev1
= AREF (recent_keys
, ix1
);
3286 if ((ix2
= ix1
- 1) < 0)
3287 ix2
= NUM_RECENT_KEYS
- 1;
3288 ev2
= AREF (recent_keys
, ix2
);
3290 if ((ix3
= ix2
- 1) < 0)
3291 ix3
= NUM_RECENT_KEYS
- 1;
3292 ev3
= AREF (recent_keys
, ix3
);
3294 if (EQ (XCAR (c
), Qhelp_echo
))
3296 /* Don't record `help-echo' in recent_keys unless it shows some help
3297 message, and a different help than the previously recorded
3299 Lisp_Object help
, last_help
;
3301 help
= Fcar_safe (Fcdr_safe (XCDR (c
)));
3302 if (!STRINGP (help
))
3304 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qhelp_echo
)
3305 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev1
))), EQ (last_help
, help
)))
3307 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3308 && CONSP (ev2
) && EQ (XCAR (ev2
), Qhelp_echo
)
3309 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev2
))), EQ (last_help
, help
)))
3311 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3312 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3313 && CONSP (ev3
) && EQ (XCAR (ev3
), Qhelp_echo
)
3314 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev3
))), EQ (last_help
, help
)))
3317 else if (EQ (XCAR (c
), Qmouse_movement
))
3319 /* Only record one pair of `mouse-movement' on a window in recent_keys.
3320 So additional mouse movement events replace the last element. */
3321 Lisp_Object last_window
, window
;
3323 window
= Fcar_safe (Fcar_safe (XCDR (c
)));
3324 if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3325 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev1
))), EQ (last_window
, window
))
3326 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3327 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev2
))), EQ (last_window
, window
)))
3329 ASET (recent_keys
, ix1
, c
);
3335 store_kbd_macro_char (c
);
3340 ASET (recent_keys
, recent_keys_index
, c
);
3341 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
3342 recent_keys_index
= 0;
3344 else if (recorded
< 0)
3346 /* We need to remove one or two events from recent_keys.
3347 To do this, we simply put nil at those events and move the
3348 recent_keys_index backwards over those events. Usually,
3349 users will never see those nil events, as they will be
3350 overwritten by the command keys entered to see recent_keys
3353 while (recorded
++ < 0 && total_keys
> 0)
3355 if (total_keys
< NUM_RECENT_KEYS
)
3357 if (--recent_keys_index
< 0)
3358 recent_keys_index
= NUM_RECENT_KEYS
- 1;
3359 ASET (recent_keys
, recent_keys_index
, Qnil
);
3363 num_nonmacro_input_events
++;
3365 /* Write c to the dribble file. If c is a lispy event, write
3366 the event's symbol to the dribble file, in <brackets>. Bleaugh.
3367 If you, dear reader, have a better idea, you've got the source. :-) */
3372 if (XUINT (c
) < 0x100)
3373 putc (XINT (c
), dribble
);
3375 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
3379 Lisp_Object dribblee
;
3381 /* If it's a structured event, take the event header. */
3382 dribblee
= EVENT_HEAD (c
);
3384 if (SYMBOLP (dribblee
))
3386 putc ('<', dribble
);
3387 fwrite (SDATA (SYMBOL_NAME (dribblee
)), sizeof (char),
3388 SBYTES (SYMBOL_NAME (dribblee
)),
3390 putc ('>', dribble
);
3402 struct buffer
*old
= current_buffer
;
3403 Fprinc (object
, Qnil
);
3404 set_buffer_internal (XBUFFER (Vstandard_output
));
3405 call0 (intern ("help-mode"));
3406 set_buffer_internal (old
);
3410 /* Copy out or in the info on where C-g should throw to.
3411 This is used when running Lisp code from within get_char,
3412 in case get_char is called recursively.
3413 See read_process_output. */
3419 bcopy (getcjmp
, temp
, sizeof getcjmp
);
3423 restore_getcjmp (temp
)
3426 bcopy (temp
, getcjmp
, sizeof getcjmp
);
3431 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
3432 of this function. */
3435 tracking_off (old_value
)
3436 Lisp_Object old_value
;
3438 do_mouse_tracking
= old_value
;
3439 if (NILP (old_value
))
3441 /* Redisplay may have been preempted because there was input
3442 available, and it assumes it will be called again after the
3443 input has been processed. If the only input available was
3444 the sort that we have just disabled, then we need to call
3446 if (!readable_events (READABLE_EVENTS_DO_TIMERS_NOW
))
3448 redisplay_preserve_echo_area (6);
3449 get_input_pending (&input_pending
,
3450 READABLE_EVENTS_DO_TIMERS_NOW
);
3456 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
3457 doc
: /* Evaluate BODY with mouse movement events enabled.
3458 Within a `track-mouse' form, mouse motion generates input events that
3459 you can read with `read-event'.
3460 Normally, mouse motion is ignored.
3461 usage: (track-mouse BODY ...) */)
3465 int count
= SPECPDL_INDEX ();
3468 record_unwind_protect (tracking_off
, do_mouse_tracking
);
3470 do_mouse_tracking
= Qt
;
3472 val
= Fprogn (args
);
3473 return unbind_to (count
, val
);
3476 /* If mouse has moved on some frame, return one of those frames.
3477 Return 0 otherwise. */
3482 Lisp_Object tail
, frame
;
3484 FOR_EACH_FRAME (tail
, frame
)
3486 if (XFRAME (frame
)->mouse_moved
)
3487 return XFRAME (frame
);
3493 #endif /* HAVE_MOUSE */
3495 /* Low level keyboard/mouse input.
3496 kbd_buffer_store_event places events in kbd_buffer, and
3497 kbd_buffer_get_event retrieves them. */
3499 /* Return true iff there are any events in the queue that read-char
3500 would return. If this returns false, a read-char would block. */
3502 readable_events (flags
)
3505 if (flags
& READABLE_EVENTS_DO_TIMERS_NOW
)
3508 /* If the buffer contains only FOCUS_IN_EVENT events, and
3509 READABLE_EVENTS_FILTER_EVENTS is set, report it as empty. */
3510 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3512 if (flags
& (READABLE_EVENTS_FILTER_EVENTS
3513 #ifdef USE_TOOLKIT_SCROLL_BARS
3514 | READABLE_EVENTS_IGNORE_SQUEEZABLES
3518 struct input_event
*event
;
3520 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3527 #ifdef USE_TOOLKIT_SCROLL_BARS
3528 (flags
& READABLE_EVENTS_FILTER_EVENTS
) &&
3530 event
->kind
== FOCUS_IN_EVENT
)
3531 #ifdef USE_TOOLKIT_SCROLL_BARS
3532 && !((flags
& READABLE_EVENTS_IGNORE_SQUEEZABLES
)
3533 && event
->kind
== SCROLL_BAR_CLICK_EVENT
3534 && event
->part
== scroll_bar_handle
3535 && event
->modifiers
== 0)
3540 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3543 while (event
!= kbd_store_ptr
);
3550 if (!(flags
& READABLE_EVENTS_IGNORE_SQUEEZABLES
)
3551 && !NILP (do_mouse_tracking
) && some_mouse_moved ())
3556 if (current_kboard
->kbd_queue_has_data
)
3562 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
3563 if (kb
->kbd_queue_has_data
)
3569 /* Set this for debugging, to have a way to get out */
3574 event_to_kboard (event
)
3575 struct input_event
*event
;
3578 frame
= event
->frame_or_window
;
3580 frame
= XCAR (frame
);
3581 else if (WINDOWP (frame
))
3582 frame
= WINDOW_FRAME (XWINDOW (frame
));
3584 /* There are still some events that don't set this field.
3585 For now, just ignore the problem.
3586 Also ignore dead frames here. */
3587 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
3590 return FRAME_KBOARD (XFRAME (frame
));
3595 Lisp_Object Vthrow_on_input
;
3597 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
3600 kbd_buffer_store_event (event
)
3601 register struct input_event
*event
;
3603 kbd_buffer_store_event_hold (event
, 0);
3606 /* Store EVENT obtained at interrupt level into kbd_buffer, fifo.
3608 If HOLD_QUIT is 0, just stuff EVENT into the fifo.
3609 Else, if HOLD_QUIT.kind != NO_EVENT, discard EVENT.
3610 Else, if EVENT is a quit event, store the quit event
3611 in HOLD_QUIT, and return (thus ignoring further events).
3613 This is used in read_avail_input to postpone the processing
3614 of the quit event until all subsequent input events have been
3615 parsed (and discarded).
3619 kbd_buffer_store_event_hold (event
, hold_quit
)
3620 register struct input_event
*event
;
3621 struct input_event
*hold_quit
;
3623 if (event
->kind
== NO_EVENT
)
3626 if (hold_quit
&& hold_quit
->kind
!= NO_EVENT
)
3629 if (event
->kind
== ASCII_KEYSTROKE_EVENT
)
3631 register int c
= event
->code
& 0377;
3633 if (event
->modifiers
& ctrl_modifier
)
3634 c
= make_ctrl_char (c
);
3636 c
|= (event
->modifiers
3637 & (meta_modifier
| alt_modifier
3638 | hyper_modifier
| super_modifier
));
3644 struct input_event
*sp
;
3647 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
3648 kb
!= current_kboard
))
3651 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
3652 Fcons (make_number (c
), Qnil
));
3653 kb
->kbd_queue_has_data
= 1;
3654 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3656 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3659 if (event_to_kboard (sp
) == kb
)
3661 sp
->kind
= NO_EVENT
;
3662 sp
->frame_or_window
= Qnil
;
3672 bcopy (event
, (char *) hold_quit
, sizeof (*event
));
3676 /* If this results in a quit_char being returned to Emacs as
3677 input, set Vlast_event_frame properly. If this doesn't
3678 get returned to Emacs as an event, the next event read
3679 will set Vlast_event_frame again, so this is safe to do. */
3683 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
3685 focus
= event
->frame_or_window
;
3686 internal_last_event_frame
= focus
;
3687 Vlast_event_frame
= focus
;
3690 last_event_timestamp
= event
->timestamp
;
3691 interrupt_signal (0 /* dummy */);
3695 if (c
&& c
== stop_character
)
3701 /* Don't insert two BUFFER_SWITCH_EVENT's in a row.
3702 Just ignore the second one. */
3703 else if (event
->kind
== BUFFER_SWITCH_EVENT
3704 && kbd_fetch_ptr
!= kbd_store_ptr
3705 && ((kbd_store_ptr
== kbd_buffer
3706 ? kbd_buffer
+ KBD_BUFFER_SIZE
- 1
3707 : kbd_store_ptr
- 1)->kind
) == BUFFER_SWITCH_EVENT
)
3710 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
3711 kbd_store_ptr
= kbd_buffer
;
3713 /* Don't let the very last slot in the buffer become full,
3714 since that would make the two pointers equal,
3715 and that is indistinguishable from an empty buffer.
3716 Discard the event if it would fill the last slot. */
3717 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3719 *kbd_store_ptr
= *event
;
3723 /* If we're inside while-no-input, and this event qualifies
3724 as input, set quit-flag to cause an interrupt. */
3725 if (!NILP (Vthrow_on_input
)
3726 && event
->kind
!= FOCUS_IN_EVENT
3727 && event
->kind
!= HELP_EVENT
3728 && event
->kind
!= DEICONIFY_EVENT
)
3730 Vquit_flag
= Vthrow_on_input
;
3731 /* If we're inside a function that wants immediate quits,
3733 if (immediate_quit
&& NILP (Vinhibit_quit
))
3743 /* Put an input event back in the head of the event queue. */
3746 kbd_buffer_unget_event (event
)
3747 register struct input_event
*event
;
3749 if (kbd_fetch_ptr
== kbd_buffer
)
3750 kbd_fetch_ptr
= kbd_buffer
+ KBD_BUFFER_SIZE
;
3752 /* Don't let the very last slot in the buffer become full, */
3753 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3756 *kbd_fetch_ptr
= *event
;
3761 /* Generate HELP_EVENT input_events in BUFP which has room for
3762 SIZE events. If there's not enough room in BUFP, ignore this
3765 HELP is the help form.
3767 FRAME is the frame on which the help is generated. OBJECT is the
3768 Lisp object where the help was found (a buffer, a string, an
3769 overlay, or nil if neither from a string nor from a buffer. POS is
3770 the position within OBJECT where the help was found.
3772 Value is the number of input_events generated. */
3775 gen_help_event (help
, frame
, window
, object
, pos
)
3776 Lisp_Object help
, frame
, object
, window
;
3779 struct input_event event
;
3783 event
.kind
= HELP_EVENT
;
3784 event
.frame_or_window
= frame
;
3786 event
.x
= WINDOWP (window
) ? window
: frame
;
3789 kbd_buffer_store_event (&event
);
3793 /* Store HELP_EVENTs for HELP on FRAME in the input queue. */
3796 kbd_buffer_store_help_event (frame
, help
)
3797 Lisp_Object frame
, help
;
3799 struct input_event event
;
3801 event
.kind
= HELP_EVENT
;
3802 event
.frame_or_window
= frame
;
3807 kbd_buffer_store_event (&event
);
3811 /* Discard any mouse events in the event buffer by setting them to
3814 discard_mouse_events ()
3816 struct input_event
*sp
;
3817 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3819 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3822 if (sp
->kind
== MOUSE_CLICK_EVENT
3823 || sp
->kind
== WHEEL_EVENT
3825 || sp
->kind
== W32_SCROLL_BAR_CLICK_EVENT
3827 || sp
->kind
== SCROLL_BAR_CLICK_EVENT
)
3829 sp
->kind
= NO_EVENT
;
3835 /* Return non-zero if there are any real events waiting in the event
3836 buffer, not counting `NO_EVENT's.
3838 If DISCARD is non-zero, discard NO_EVENT events at the front of
3839 the input queue, possibly leaving the input queue empty if there
3840 are no real input events. */
3843 kbd_buffer_events_waiting (discard
)
3846 struct input_event
*sp
;
3848 for (sp
= kbd_fetch_ptr
;
3849 sp
!= kbd_store_ptr
&& sp
->kind
== NO_EVENT
;
3852 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3859 return sp
!= kbd_store_ptr
&& sp
->kind
!= NO_EVENT
;
3863 /* Clear input event EVENT. */
3867 struct input_event
*event
;
3869 event
->kind
= NO_EVENT
;
3873 /* Read one event from the event buffer, waiting if necessary.
3874 The value is a Lisp object representing the event.
3875 The value is nil for an event that should be ignored,
3876 or that was handled here.
3877 We always read and discard one event. */
3880 kbd_buffer_get_event (kbp
, used_mouse_menu
)
3882 int *used_mouse_menu
;
3891 *kbp
= current_kboard
;
3895 /* Wait until there is input available. */
3898 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3901 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3905 /* If the quit flag is set, then read_char will return
3906 quit_char, so that counts as "available input." */
3907 if (!NILP (Vquit_flag
))
3908 quit_throw_to_read_char ();
3910 /* One way or another, wait until input is available; then, if
3911 interrupt handlers have not read it, read it now. */
3914 wait_for_kbd_input ();
3916 /* Note SIGIO has been undef'd if FIONREAD is missing. */
3920 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3923 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3927 wait_reading_process_output (0, 0, -1, 1, Qnil
, NULL
, 0);
3929 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
3930 /* Pass 1 for EXPECT since we just waited to have input. */
3931 read_avail_input (1);
3933 #endif /* not VMS */
3936 if (CONSP (Vunread_command_events
))
3939 first
= XCAR (Vunread_command_events
);
3940 Vunread_command_events
= XCDR (Vunread_command_events
);
3941 *kbp
= current_kboard
;
3945 /* At this point, we know that there is a readable event available
3946 somewhere. If the event queue is empty, then there must be a
3947 mouse movement enabled and available. */
3948 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3950 struct input_event
*event
;
3952 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3956 last_event_timestamp
= event
->timestamp
;
3959 *kbp
= event_to_kboard (event
);
3961 *kbp
= current_kboard
; /* Better than returning null ptr? */
3963 *kbp
= &the_only_kboard
;
3968 /* These two kinds of events get special handling
3969 and don't actually appear to the command loop.
3970 We return nil for them. */
3971 if (event
->kind
== SELECTION_REQUEST_EVENT
3972 || event
->kind
== SELECTION_CLEAR_EVENT
)
3975 struct input_event copy
;
3977 /* Remove it from the buffer before processing it,
3978 since otherwise swallow_events will see it
3979 and process it again. */
3981 kbd_fetch_ptr
= event
+ 1;
3982 input_pending
= readable_events (0);
3983 x_handle_selection_event (©
);
3985 /* We're getting selection request events, but we don't have
3991 #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS)
3992 else if (event
->kind
== DELETE_WINDOW_EVENT
)
3994 /* Make an event (delete-frame (FRAME)). */
3995 obj
= Fcons (event
->frame_or_window
, Qnil
);
3996 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
3997 kbd_fetch_ptr
= event
+ 1;
4000 #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS)
4001 else if (event
->kind
== ICONIFY_EVENT
)
4003 /* Make an event (iconify-frame (FRAME)). */
4004 obj
= Fcons (event
->frame_or_window
, Qnil
);
4005 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
4006 kbd_fetch_ptr
= event
+ 1;
4008 else if (event
->kind
== DEICONIFY_EVENT
)
4010 /* Make an event (make-frame-visible (FRAME)). */
4011 obj
= Fcons (event
->frame_or_window
, Qnil
);
4012 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
4013 kbd_fetch_ptr
= event
+ 1;
4016 else if (event
->kind
== BUFFER_SWITCH_EVENT
)
4018 /* The value doesn't matter here; only the type is tested. */
4019 XSETBUFFER (obj
, current_buffer
);
4020 kbd_fetch_ptr
= event
+ 1;
4022 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
4023 || defined (USE_GTK)
4024 else if (event
->kind
== MENU_BAR_ACTIVATE_EVENT
)
4026 kbd_fetch_ptr
= event
+ 1;
4027 input_pending
= readable_events (0);
4028 if (FRAME_LIVE_P (XFRAME (event
->frame_or_window
)))
4029 x_activate_menubar (XFRAME (event
->frame_or_window
));
4032 #if defined (WINDOWSNT) || defined (MAC_OS)
4033 else if (event
->kind
== LANGUAGE_CHANGE_EVENT
)
4036 /* Make an event (language-change (KEY_SCRIPT)). */
4037 obj
= Fcons (make_number (event
->code
), Qnil
);
4039 /* Make an event (language-change (FRAME CHARSET LCID)). */
4040 obj
= Fcons (event
->frame_or_window
, Qnil
);
4042 obj
= Fcons (Qlanguage_change
, Fcons (obj
, Qnil
));
4043 kbd_fetch_ptr
= event
+ 1;
4046 else if (event
->kind
== SAVE_SESSION_EVENT
)
4048 obj
= Fcons (Qsave_session
, Qnil
);
4049 kbd_fetch_ptr
= event
+ 1;
4051 /* Just discard these, by returning nil.
4052 With MULTI_KBOARD, these events are used as placeholders
4053 when we need to randomly delete events from the queue.
4054 (They shouldn't otherwise be found in the buffer,
4055 but on some machines it appears they do show up
4056 even without MULTI_KBOARD.) */
4057 /* On Windows NT/9X, NO_EVENT is used to delete extraneous
4058 mouse events during a popup-menu call. */
4059 else if (event
->kind
== NO_EVENT
)
4060 kbd_fetch_ptr
= event
+ 1;
4061 else if (event
->kind
== HELP_EVENT
)
4063 Lisp_Object object
, position
, help
, frame
, window
;
4065 frame
= event
->frame_or_window
;
4066 object
= event
->arg
;
4067 position
= make_number (event
->code
);
4070 clear_event (event
);
4072 kbd_fetch_ptr
= event
+ 1;
4073 if (!WINDOWP (window
))
4075 obj
= Fcons (Qhelp_echo
,
4076 list5 (frame
, help
, window
, object
, position
));
4078 else if (event
->kind
== FOCUS_IN_EVENT
)
4080 /* Notification of a FocusIn event. The frame receiving the
4081 focus is in event->frame_or_window. Generate a
4082 switch-frame event if necessary. */
4083 Lisp_Object frame
, focus
;
4085 frame
= event
->frame_or_window
;
4086 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4090 if (!EQ (frame
, internal_last_event_frame
)
4091 && !EQ (frame
, selected_frame
))
4092 obj
= make_lispy_switch_frame (frame
);
4093 internal_last_event_frame
= frame
;
4094 kbd_fetch_ptr
= event
+ 1;
4098 /* If this event is on a different frame, return a switch-frame this
4099 time, and leave the event in the queue for next time. */
4103 frame
= event
->frame_or_window
;
4105 frame
= XCAR (frame
);
4106 else if (WINDOWP (frame
))
4107 frame
= WINDOW_FRAME (XWINDOW (frame
));
4109 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4113 if (! EQ (frame
, internal_last_event_frame
)
4114 && !EQ (frame
, selected_frame
))
4115 obj
= make_lispy_switch_frame (frame
);
4116 internal_last_event_frame
= frame
;
4118 /* If we didn't decide to make a switch-frame event, go ahead
4119 and build a real event from the queue entry. */
4123 obj
= make_lispy_event (event
);
4125 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined(MAC_OS) \
4126 || defined (USE_GTK)
4127 /* If this was a menu selection, then set the flag to inhibit
4128 writing to last_nonmenu_event. Don't do this if the event
4129 we're returning is (menu-bar), though; that indicates the
4130 beginning of the menu sequence, and we might as well leave
4131 that as the `event with parameters' for this selection. */
4133 && !EQ (event
->frame_or_window
, event
->arg
)
4134 && (event
->kind
== MENU_BAR_EVENT
4135 || event
->kind
== TOOL_BAR_EVENT
))
4136 *used_mouse_menu
= 1;
4139 /* Wipe out this event, to catch bugs. */
4140 clear_event (event
);
4141 kbd_fetch_ptr
= event
+ 1;
4146 /* Try generating a mouse motion event. */
4147 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
4149 FRAME_PTR f
= some_mouse_moved ();
4150 Lisp_Object bar_window
;
4151 enum scroll_bar_part part
;
4155 *kbp
= current_kboard
;
4156 /* Note that this uses F to determine which display to look at.
4157 If there is no valid info, it does not store anything
4158 so x remains nil. */
4160 (*mouse_position_hook
) (&f
, 0, &bar_window
, &part
, &x
, &y
, &time
);
4164 /* Decide if we should generate a switch-frame event. Don't
4165 generate switch-frame events for motion outside of all Emacs
4171 frame
= FRAME_FOCUS_FRAME (f
);
4173 XSETFRAME (frame
, f
);
4175 if (! EQ (frame
, internal_last_event_frame
)
4176 && !EQ (frame
, selected_frame
))
4177 obj
= make_lispy_switch_frame (frame
);
4178 internal_last_event_frame
= frame
;
4181 /* If we didn't decide to make a switch-frame event, go ahead and
4182 return a mouse-motion event. */
4183 if (!NILP (x
) && NILP (obj
))
4184 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
4186 #endif /* HAVE_MOUSE */
4188 /* We were promised by the above while loop that there was
4189 something for us to read! */
4192 input_pending
= readable_events (0);
4194 Vlast_event_frame
= internal_last_event_frame
;
4199 /* Process any events that are not user-visible,
4200 then return, without reading any user-visible events. */
4203 swallow_events (do_display
)
4208 while (kbd_fetch_ptr
!= kbd_store_ptr
)
4210 struct input_event
*event
;
4212 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
4216 last_event_timestamp
= event
->timestamp
;
4218 /* These two kinds of events get special handling
4219 and don't actually appear to the command loop. */
4220 if (event
->kind
== SELECTION_REQUEST_EVENT
4221 || event
->kind
== SELECTION_CLEAR_EVENT
)
4224 struct input_event copy
;
4226 /* Remove it from the buffer before processing it,
4227 since otherwise swallow_events called recursively could see it
4228 and process it again. */
4230 kbd_fetch_ptr
= event
+ 1;
4231 input_pending
= readable_events (0);
4232 x_handle_selection_event (©
);
4234 /* We're getting selection request events, but we don't have
4243 old_timers_run
= timers_run
;
4244 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
4246 if (timers_run
!= old_timers_run
&& do_display
)
4247 redisplay_preserve_echo_area (7);
4250 /* Record the start of when Emacs is idle,
4251 for the sake of running idle-time timers. */
4258 /* If we are already in the idle state, do nothing. */
4259 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4262 EMACS_GET_TIME (timer_idleness_start_time
);
4264 timer_last_idleness_start_time
= timer_idleness_start_time
;
4266 /* Mark all idle-time timers as once again candidates for running. */
4267 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCDR (timers
))
4271 timer
= XCAR (timers
);
4273 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4275 XVECTOR (timer
)->contents
[0] = Qnil
;
4279 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
4284 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
4287 /* Resume idle timer from last idle start time. */
4290 timer_resume_idle ()
4292 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4295 timer_idleness_start_time
= timer_last_idleness_start_time
;
4298 /* This is only for debugging. */
4299 struct input_event last_timer_event
;
4301 /* Check whether a timer has fired. To prevent larger problems we simply
4302 disregard elements that are not proper timers. Do not make a circular
4303 timer list for the time being.
4305 Returns the number of seconds to wait until the next timer fires. If a
4306 timer is triggering now, return zero seconds.
4307 If no timer is active, return -1 seconds.
4309 If a timer is ripe, we run it, with quitting turned off.
4311 DO_IT_NOW is now ignored. It used to mean that we should
4312 run the timer directly instead of queueing a timer-event.
4313 Now we always run timers directly. */
4316 timer_check (do_it_now
)
4319 EMACS_TIME nexttime
;
4320 EMACS_TIME now
, idleness_now
;
4321 Lisp_Object timers
, idle_timers
, chosen_timer
;
4322 struct gcpro gcpro1
, gcpro2
, gcpro3
;
4324 EMACS_SET_SECS (nexttime
, -1);
4325 EMACS_SET_USECS (nexttime
, -1);
4327 /* Always consider the ordinary timers. */
4328 timers
= Vtimer_list
;
4329 /* Consider the idle timers only if Emacs is idle. */
4330 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4331 idle_timers
= Vtimer_idle_list
;
4334 chosen_timer
= Qnil
;
4335 GCPRO3 (timers
, idle_timers
, chosen_timer
);
4337 if (CONSP (timers
) || CONSP (idle_timers
))
4339 EMACS_GET_TIME (now
);
4340 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4341 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
4344 while (CONSP (timers
) || CONSP (idle_timers
))
4346 Lisp_Object
*vector
;
4347 Lisp_Object timer
= Qnil
, idle_timer
= Qnil
;
4348 EMACS_TIME timer_time
, idle_timer_time
;
4349 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
4351 /* Skip past invalid timers and timers already handled. */
4354 timer
= XCAR (timers
);
4355 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4357 timers
= XCDR (timers
);
4360 vector
= XVECTOR (timer
)->contents
;
4362 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4363 || !INTEGERP (vector
[3])
4364 || ! NILP (vector
[0]))
4366 timers
= XCDR (timers
);
4370 if (!NILP (idle_timers
))
4372 timer
= XCAR (idle_timers
);
4373 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4375 idle_timers
= XCDR (idle_timers
);
4378 vector
= XVECTOR (timer
)->contents
;
4380 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4381 || !INTEGERP (vector
[3])
4382 || ! NILP (vector
[0]))
4384 idle_timers
= XCDR (idle_timers
);
4389 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
4390 based on the next ordinary timer.
4391 TIMER_DIFFERENCE is the distance in time from NOW to when
4392 this timer becomes ripe (negative if it's already ripe). */
4395 timer
= XCAR (timers
);
4396 vector
= XVECTOR (timer
)->contents
;
4397 EMACS_SET_SECS (timer_time
,
4398 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4399 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
4400 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
4403 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
4404 based on the next idle timer. */
4405 if (!NILP (idle_timers
))
4407 idle_timer
= XCAR (idle_timers
);
4408 vector
= XVECTOR (idle_timer
)->contents
;
4409 EMACS_SET_SECS (idle_timer_time
,
4410 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4411 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
4412 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
4415 /* Decide which timer is the next timer,
4416 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
4417 Also step down the list where we found that timer. */
4419 if (! NILP (timers
) && ! NILP (idle_timers
))
4422 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
4423 if (EMACS_TIME_NEG_P (temp
))
4425 chosen_timer
= timer
;
4426 timers
= XCDR (timers
);
4427 difference
= timer_difference
;
4431 chosen_timer
= idle_timer
;
4432 idle_timers
= XCDR (idle_timers
);
4433 difference
= idle_timer_difference
;
4436 else if (! NILP (timers
))
4438 chosen_timer
= timer
;
4439 timers
= XCDR (timers
);
4440 difference
= timer_difference
;
4444 chosen_timer
= idle_timer
;
4445 idle_timers
= XCDR (idle_timers
);
4446 difference
= idle_timer_difference
;
4448 vector
= XVECTOR (chosen_timer
)->contents
;
4450 /* If timer is ripe, run it if it hasn't been run. */
4451 if (EMACS_TIME_NEG_P (difference
)
4452 || (EMACS_SECS (difference
) == 0
4453 && EMACS_USECS (difference
) == 0))
4455 if (NILP (vector
[0]))
4457 int was_locked
= single_kboard
;
4458 int count
= SPECPDL_INDEX ();
4459 Lisp_Object old_deactivate_mark
= Vdeactivate_mark
;
4461 /* Mark the timer as triggered to prevent problems if the lisp
4462 code fails to reschedule it right. */
4465 specbind (Qinhibit_quit
, Qt
);
4467 call1 (Qtimer_event_handler
, chosen_timer
);
4468 Vdeactivate_mark
= old_deactivate_mark
;
4470 unbind_to (count
, Qnil
);
4472 /* Resume allowing input from any kboard, if that was true before. */
4474 any_kboard_state ();
4476 /* Since we have handled the event,
4477 we don't need to tell the caller to wake up and do it. */
4481 /* When we encounter a timer that is still waiting,
4482 return the amount of time to wait before it is ripe. */
4489 /* No timers are pending in the future. */
4490 /* Return 0 if we generated an event, and -1 if not. */
4495 /* Caches for modify_event_symbol. */
4496 static Lisp_Object accent_key_syms
;
4497 static Lisp_Object func_key_syms
;
4498 static Lisp_Object mouse_syms
;
4499 static Lisp_Object wheel_syms
;
4500 static Lisp_Object drag_n_drop_syms
;
4502 /* This is a list of keysym codes for special "accent" characters.
4503 It parallels lispy_accent_keys. */
4505 static int lispy_accent_codes
[] =
4507 #ifdef XK_dead_circumflex
4512 #ifdef XK_dead_grave
4517 #ifdef XK_dead_tilde
4522 #ifdef XK_dead_diaeresis
4527 #ifdef XK_dead_macron
4532 #ifdef XK_dead_degree
4537 #ifdef XK_dead_acute
4542 #ifdef XK_dead_cedilla
4547 #ifdef XK_dead_breve
4552 #ifdef XK_dead_ogonek
4557 #ifdef XK_dead_caron
4562 #ifdef XK_dead_doubleacute
4563 XK_dead_doubleacute
,
4567 #ifdef XK_dead_abovedot
4572 #ifdef XK_dead_abovering
4582 #ifdef XK_dead_belowdot
4587 #ifdef XK_dead_voiced_sound
4588 XK_dead_voiced_sound
,
4592 #ifdef XK_dead_semivoiced_sound
4593 XK_dead_semivoiced_sound
,
4609 /* This is a list of Lisp names for special "accent" characters.
4610 It parallels lispy_accent_codes. */
4612 static char *lispy_accent_keys
[] =
4630 "dead-voiced-sound",
4631 "dead-semivoiced-sound",
4637 #define FUNCTION_KEY_OFFSET 0x0
4639 char *lispy_function_keys
[] =
4643 0, /* VK_LBUTTON 0x01 */
4644 0, /* VK_RBUTTON 0x02 */
4645 "cancel", /* VK_CANCEL 0x03 */
4646 0, /* VK_MBUTTON 0x04 */
4648 0, 0, 0, /* 0x05 .. 0x07 */
4650 "backspace", /* VK_BACK 0x08 */
4651 "tab", /* VK_TAB 0x09 */
4653 0, 0, /* 0x0A .. 0x0B */
4655 "clear", /* VK_CLEAR 0x0C */
4656 "return", /* VK_RETURN 0x0D */
4658 0, 0, /* 0x0E .. 0x0F */
4660 0, /* VK_SHIFT 0x10 */
4661 0, /* VK_CONTROL 0x11 */
4662 0, /* VK_MENU 0x12 */
4663 "pause", /* VK_PAUSE 0x13 */
4664 "capslock", /* VK_CAPITAL 0x14 */
4666 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
4668 "escape", /* VK_ESCAPE 0x1B */
4670 0, 0, 0, 0, /* 0x1C .. 0x1F */
4672 0, /* VK_SPACE 0x20 */
4673 "prior", /* VK_PRIOR 0x21 */
4674 "next", /* VK_NEXT 0x22 */
4675 "end", /* VK_END 0x23 */
4676 "home", /* VK_HOME 0x24 */
4677 "left", /* VK_LEFT 0x25 */
4678 "up", /* VK_UP 0x26 */
4679 "right", /* VK_RIGHT 0x27 */
4680 "down", /* VK_DOWN 0x28 */
4681 "select", /* VK_SELECT 0x29 */
4682 "print", /* VK_PRINT 0x2A */
4683 "execute", /* VK_EXECUTE 0x2B */
4684 "snapshot", /* VK_SNAPSHOT 0x2C */
4685 "insert", /* VK_INSERT 0x2D */
4686 "delete", /* VK_DELETE 0x2E */
4687 "help", /* VK_HELP 0x2F */
4689 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
4691 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4693 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
4695 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
4697 0, 0, 0, 0, 0, 0, 0, 0, 0,
4698 0, 0, 0, 0, 0, 0, 0, 0, 0,
4699 0, 0, 0, 0, 0, 0, 0, 0,
4701 "lwindow", /* VK_LWIN 0x5B */
4702 "rwindow", /* VK_RWIN 0x5C */
4703 "apps", /* VK_APPS 0x5D */
4705 0, 0, /* 0x5E .. 0x5F */
4707 "kp-0", /* VK_NUMPAD0 0x60 */
4708 "kp-1", /* VK_NUMPAD1 0x61 */
4709 "kp-2", /* VK_NUMPAD2 0x62 */
4710 "kp-3", /* VK_NUMPAD3 0x63 */
4711 "kp-4", /* VK_NUMPAD4 0x64 */
4712 "kp-5", /* VK_NUMPAD5 0x65 */
4713 "kp-6", /* VK_NUMPAD6 0x66 */
4714 "kp-7", /* VK_NUMPAD7 0x67 */
4715 "kp-8", /* VK_NUMPAD8 0x68 */
4716 "kp-9", /* VK_NUMPAD9 0x69 */
4717 "kp-multiply", /* VK_MULTIPLY 0x6A */
4718 "kp-add", /* VK_ADD 0x6B */
4719 "kp-separator", /* VK_SEPARATOR 0x6C */
4720 "kp-subtract", /* VK_SUBTRACT 0x6D */
4721 "kp-decimal", /* VK_DECIMAL 0x6E */
4722 "kp-divide", /* VK_DIVIDE 0x6F */
4723 "f1", /* VK_F1 0x70 */
4724 "f2", /* VK_F2 0x71 */
4725 "f3", /* VK_F3 0x72 */
4726 "f4", /* VK_F4 0x73 */
4727 "f5", /* VK_F5 0x74 */
4728 "f6", /* VK_F6 0x75 */
4729 "f7", /* VK_F7 0x76 */
4730 "f8", /* VK_F8 0x77 */
4731 "f9", /* VK_F9 0x78 */
4732 "f10", /* VK_F10 0x79 */
4733 "f11", /* VK_F11 0x7A */
4734 "f12", /* VK_F12 0x7B */
4735 "f13", /* VK_F13 0x7C */
4736 "f14", /* VK_F14 0x7D */
4737 "f15", /* VK_F15 0x7E */
4738 "f16", /* VK_F16 0x7F */
4739 "f17", /* VK_F17 0x80 */
4740 "f18", /* VK_F18 0x81 */
4741 "f19", /* VK_F19 0x82 */
4742 "f20", /* VK_F20 0x83 */
4743 "f21", /* VK_F21 0x84 */
4744 "f22", /* VK_F22 0x85 */
4745 "f23", /* VK_F23 0x86 */
4746 "f24", /* VK_F24 0x87 */
4748 0, 0, 0, 0, /* 0x88 .. 0x8B */
4749 0, 0, 0, 0, /* 0x8C .. 0x8F */
4751 "kp-numlock", /* VK_NUMLOCK 0x90 */
4752 "scroll", /* VK_SCROLL 0x91 */
4754 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
4755 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
4756 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
4757 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
4758 "kp-end", /* VK_NUMPAD_END 0x96 */
4759 "kp-home", /* VK_NUMPAD_HOME 0x97 */
4760 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
4761 "kp-up", /* VK_NUMPAD_UP 0x99 */
4762 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
4763 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
4764 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
4765 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
4767 0, 0, /* 0x9E .. 0x9F */
4770 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
4771 * Used only as parameters to GetAsyncKeyState and GetKeyState.
4772 * No other API or message will distinguish left and right keys this way.
4776 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4777 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4778 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4779 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4780 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4786 "attn", /* VK_ATTN 0xF6 */
4787 "crsel", /* VK_CRSEL 0xF7 */
4788 "exsel", /* VK_EXSEL 0xF8 */
4789 "ereof", /* VK_EREOF 0xF9 */
4790 "play", /* VK_PLAY 0xFA */
4791 "zoom", /* VK_ZOOM 0xFB */
4792 "noname", /* VK_NONAME 0xFC */
4793 "pa1", /* VK_PA1 0xFD */
4794 "oem_clear", /* VK_OEM_CLEAR 0xFE */
4798 #else /* not HAVE_NTGUI */
4800 /* This should be dealt with in XTread_socket now, and that doesn't
4801 depend on the client system having the Kana syms defined. See also
4802 the XK_kana_A case below. */
4805 static char *lispy_kana_keys
[] =
4807 /* X Keysym value */
4808 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x400 .. 0x40f */
4809 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x410 .. 0x41f */
4810 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x420 .. 0x42f */
4811 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x430 .. 0x43f */
4812 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x440 .. 0x44f */
4813 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x450 .. 0x45f */
4814 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x460 .. 0x46f */
4815 0,0,0,0,0,0,0,0,0,0,0,0,0,0,"overline",0,
4816 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x480 .. 0x48f */
4817 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x490 .. 0x49f */
4818 0, "kana-fullstop", "kana-openingbracket", "kana-closingbracket",
4819 "kana-comma", "kana-conjunctive", "kana-WO", "kana-a",
4820 "kana-i", "kana-u", "kana-e", "kana-o",
4821 "kana-ya", "kana-yu", "kana-yo", "kana-tsu",
4822 "prolongedsound", "kana-A", "kana-I", "kana-U",
4823 "kana-E", "kana-O", "kana-KA", "kana-KI",
4824 "kana-KU", "kana-KE", "kana-KO", "kana-SA",
4825 "kana-SHI", "kana-SU", "kana-SE", "kana-SO",
4826 "kana-TA", "kana-CHI", "kana-TSU", "kana-TE",
4827 "kana-TO", "kana-NA", "kana-NI", "kana-NU",
4828 "kana-NE", "kana-NO", "kana-HA", "kana-HI",
4829 "kana-FU", "kana-HE", "kana-HO", "kana-MA",
4830 "kana-MI", "kana-MU", "kana-ME", "kana-MO",
4831 "kana-YA", "kana-YU", "kana-YO", "kana-RA",
4832 "kana-RI", "kana-RU", "kana-RE", "kana-RO",
4833 "kana-WA", "kana-N", "voicedsound", "semivoicedsound",
4834 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4e0 .. 0x4ef */
4835 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4f0 .. 0x4ff */
4837 #endif /* XK_kana_A */
4840 #define FUNCTION_KEY_OFFSET 0xff00
4842 /* You'll notice that this table is arranged to be conveniently
4843 indexed by X Windows keysym values. */
4844 static char *lispy_function_keys
[] =
4846 /* X Keysym value */
4848 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00...0f */
4849 "backspace", "tab", "linefeed", "clear",
4851 0, 0, 0, "pause", /* 0xff10...1f */
4852 0, 0, 0, 0, 0, 0, 0, "escape",
4854 0, "kanji", "muhenkan", "henkan", /* 0xff20...2f */
4855 "romaji", "hiragana", "katakana", "hiragana-katakana",
4856 "zenkaku", "hankaku", "zenkaku-hankaku", "touroku",
4857 "massyo", "kana-lock", "kana-shift", "eisu-shift",
4858 "eisu-toggle", /* 0xff30...3f */
4859 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4860 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
4862 "home", "left", "up", "right", /* 0xff50 */ /* IsCursorKey */
4863 "down", "prior", "next", "end",
4864 "begin", 0, 0, 0, 0, 0, 0, 0,
4865 "select", /* 0xff60 */ /* IsMiscFunctionKey */
4876 "break", /* 0xff6b */
4879 0, 0, 0, 0, "backtab", 0, 0, 0, /* 0xff70... */
4880 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff78... */
4881 "kp-space", /* 0xff80 */ /* IsKeypadKey */
4882 0, 0, 0, 0, 0, 0, 0, 0,
4883 "kp-tab", /* 0xff89 */
4885 "kp-enter", /* 0xff8d */
4887 "kp-f1", /* 0xff91 */
4891 "kp-home", /* 0xff95 */
4896 "kp-prior", /* kp-page-up */
4897 "kp-next", /* kp-page-down */
4903 0, 0, 0, 0, 0, 0, 0, 0, 0,
4904 "kp-multiply", /* 0xffaa */
4909 "kp-divide", /* 0xffaf */
4910 "kp-0", /* 0xffb0 */
4911 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
4914 "kp-equal", /* 0xffbd */
4915 "f1", /* 0xffbe */ /* IsFunctionKey */
4917 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
4918 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
4919 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
4920 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
4921 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
4922 0, 0, 0, 0, 0, 0, 0, 0,
4923 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
4924 0, 0, 0, 0, 0, 0, 0, "delete"
4927 /* ISO 9995 Function and Modifier Keys; the first byte is 0xFE. */
4928 #define ISO_FUNCTION_KEY_OFFSET 0xfe00
4930 static char *iso_lispy_function_keys
[] =
4932 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe00 */
4933 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe08 */
4934 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe10 */
4935 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe18 */
4936 "iso-lefttab", /* 0xfe20 */
4937 "iso-move-line-up", "iso-move-line-down",
4938 "iso-partial-line-up", "iso-partial-line-down",
4939 "iso-partial-space-left", "iso-partial-space-right",
4940 "iso-set-margin-left", "iso-set-margin-right", /* 0xffe27, 28 */
4941 "iso-release-margin-left", "iso-release-margin-right",
4942 "iso-release-both-margins",
4943 "iso-fast-cursor-left", "iso-fast-cursor-right",
4944 "iso-fast-cursor-up", "iso-fast-cursor-down",
4945 "iso-continuous-underline", "iso-discontinuous-underline", /* 0xfe30, 31 */
4946 "iso-emphasize", "iso-center-object", "iso-enter", /* ... 0xfe34 */
4949 #endif /* not HAVE_NTGUI */
4951 Lisp_Object Vlispy_mouse_stem
;
4953 static char *lispy_wheel_names
[] =
4955 "wheel-up", "wheel-down"
4958 /* drag-n-drop events are generated when a set of selected files are
4959 dragged from another application and dropped onto an Emacs window. */
4960 static char *lispy_drag_n_drop_names
[] =
4965 /* Scroll bar parts. */
4966 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
4967 Lisp_Object Qup
, Qdown
, Qbottom
, Qend_scroll
;
4968 Lisp_Object Qtop
, Qratio
;
4970 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
4971 Lisp_Object
*scroll_bar_parts
[] = {
4972 &Qabove_handle
, &Qhandle
, &Qbelow_handle
,
4973 &Qup
, &Qdown
, &Qtop
, &Qbottom
, &Qend_scroll
, &Qratio
4976 /* User signal events. */
4977 Lisp_Object Qusr1_signal
, Qusr2_signal
;
4979 Lisp_Object
*lispy_user_signals
[] =
4981 &Qusr1_signal
, &Qusr2_signal
4985 /* A vector, indexed by button number, giving the down-going location
4986 of currently depressed buttons, both scroll bar and non-scroll bar.
4988 The elements have the form
4989 (BUTTON-NUMBER MODIFIER-MASK . REST)
4990 where REST is the cdr of a position as it would be reported in the event.
4992 The make_lispy_event function stores positions here to tell the
4993 difference between click and drag events, and to store the starting
4994 location to be included in drag events. */
4996 static Lisp_Object button_down_location
;
4998 /* Information about the most recent up-going button event: Which
4999 button, what location, and what time. */
5001 static int last_mouse_button
;
5002 static int last_mouse_x
;
5003 static int last_mouse_y
;
5004 static unsigned long button_down_time
;
5006 /* The maximum time between clicks to make a double-click, or Qnil to
5007 disable double-click detection, or Qt for no time limit. */
5009 Lisp_Object Vdouble_click_time
;
5011 /* Maximum number of pixels the mouse may be moved between clicks
5012 to make a double-click. */
5014 EMACS_INT double_click_fuzz
;
5016 /* The number of clicks in this multiple-click. */
5018 int double_click_count
;
5020 /* Return position of a mouse click or wheel event */
5023 make_lispy_position (f
, x
, y
, time
)
5029 enum window_part part
;
5030 Lisp_Object posn
= Qnil
;
5031 Lisp_Object extra_info
= Qnil
;
5034 /* Set `window' to the window under frame pixel coordinates (x,y) */
5036 window
= window_from_coordinates (f
, XINT (*x
), XINT (*y
),
5037 &part
, &wx
, &wy
, 0);
5041 if (WINDOWP (window
))
5043 /* It's a click in window window at frame coordinates (x,y) */
5044 struct window
*w
= XWINDOW (window
);
5045 Lisp_Object string_info
= Qnil
;
5046 int textpos
= -1, rx
= -1, ry
= -1;
5047 int dx
= -1, dy
= -1;
5048 int width
= -1, height
= -1;
5049 Lisp_Object object
= Qnil
;
5051 /* Set event coordinates to window-relative coordinates
5052 for constructing the Lisp event below. */
5056 if (part
== ON_MODE_LINE
|| part
== ON_HEADER_LINE
)
5058 /* Mode line or header line. Look for a string under
5059 the mouse that may have a `local-map' property. */
5063 posn
= part
== ON_MODE_LINE
? Qmode_line
: Qheader_line
;
5065 string
= mode_line_string (w
, part
, &rx
, &ry
, &charpos
,
5066 &object
, &dx
, &dy
, &width
, &height
);
5067 if (STRINGP (string
))
5068 string_info
= Fcons (string
, make_number (charpos
));
5069 if (w
== XWINDOW (selected_window
))
5072 textpos
= XMARKER (w
->pointm
)->charpos
;
5074 else if (part
== ON_VERTICAL_BORDER
)
5076 posn
= Qvertical_line
;
5081 else if (part
== ON_LEFT_MARGIN
|| part
== ON_RIGHT_MARGIN
)
5086 posn
= (part
== ON_LEFT_MARGIN
) ? Qleft_margin
: Qright_margin
;
5088 string
= marginal_area_string (w
, part
, &rx
, &ry
, &charpos
,
5089 &object
, &dx
, &dy
, &width
, &height
);
5090 if (STRINGP (string
))
5091 string_info
= Fcons (string
, make_number (charpos
));
5093 else if (part
== ON_LEFT_FRINGE
|| part
== ON_RIGHT_FRINGE
)
5095 posn
= (part
== ON_LEFT_FRINGE
) ? Qleft_fringe
: Qright_fringe
;
5098 if (part
== ON_RIGHT_FRINGE
)
5099 dx
-= (window_box_width (w
, LEFT_MARGIN_AREA
)
5100 + window_box_width (w
, TEXT_AREA
)
5101 + (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
5102 ? window_box_width (w
, RIGHT_MARGIN_AREA
)
5104 else if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
5105 dx
-= window_box_width (w
, LEFT_MARGIN_AREA
);
5110 Lisp_Object string2
, object2
= Qnil
;
5111 struct display_pos p
;
5113 int width2
, height2
;
5114 wx
= max (WINDOW_LEFT_MARGIN_WIDTH (w
), wx
);
5115 string2
= buffer_posn_from_coords (w
, &wx
, &wy
, &p
,
5116 &object2
, &dx2
, &dy2
,
5118 textpos
= CHARPOS (p
.pos
);
5119 if (rx
< 0) rx
= wx
;
5120 if (ry
< 0) ry
= wy
;
5121 if (dx
< 0) dx
= dx2
;
5122 if (dy
< 0) dy
= dy2
;
5123 if (width
< 0) width
= width2
;
5124 if (height
< 0) height
= height2
;
5128 posn
= make_number (textpos
);
5129 if (STRINGP (string2
))
5130 string_info
= Fcons (string2
,
5131 make_number (CHARPOS (p
.string_pos
)));
5137 #ifdef HAVE_WINDOW_SYSTEM
5138 if (IMAGEP (object
))
5140 Lisp_Object image_map
, hotspot
;
5141 if ((image_map
= Fplist_get (XCDR (object
), QCmap
),
5143 && (hotspot
= find_hot_spot (image_map
, dx
, dy
),
5145 && (hotspot
= XCDR (hotspot
), CONSP (hotspot
)))
5146 posn
= XCAR (hotspot
);
5151 extra_info
= Fcons (object
,
5152 Fcons (Fcons (make_number (dx
),
5154 Fcons (Fcons (make_number (width
),
5155 make_number (height
)),
5159 extra_info
= Fcons (string_info
,
5160 Fcons (make_number (textpos
),
5161 Fcons (Fcons (make_number (rx
),
5167 XSETFRAME (window
, f
);
5172 XSETFASTINT (*x
, 0);
5173 XSETFASTINT (*y
, 0);
5176 return Fcons (window
,
5178 Fcons (Fcons (*x
, *y
),
5179 Fcons (make_number (time
),
5183 /* Given a struct input_event, build the lisp event which represents
5184 it. If EVENT is 0, build a mouse movement event from the mouse
5185 movement buffer, which should have a movement event in it.
5187 Note that events must be passed to this function in the order they
5188 are received; this function stores the location of button presses
5189 in order to build drag events when the button is released. */
5192 make_lispy_event (event
)
5193 struct input_event
*event
;
5197 switch (SWITCH_ENUM_CAST (event
->kind
))
5199 /* A simple keystroke. */
5200 case ASCII_KEYSTROKE_EVENT
:
5202 Lisp_Object lispy_c
;
5203 int c
= event
->code
& 0377;
5204 /* Turn ASCII characters into control characters
5206 if (event
->modifiers
& ctrl_modifier
)
5207 c
= make_ctrl_char (c
);
5209 /* Add in the other modifier bits. We took care of ctrl_modifier
5210 just above, and the shift key was taken care of by the X code,
5211 and applied to control characters by make_ctrl_char. */
5212 c
|= (event
->modifiers
5213 & (meta_modifier
| alt_modifier
5214 | hyper_modifier
| super_modifier
));
5215 /* Distinguish Shift-SPC from SPC. */
5216 if ((event
->code
& 0377) == 040
5217 && event
->modifiers
& shift_modifier
)
5218 c
|= shift_modifier
;
5219 button_down_time
= 0;
5220 XSETFASTINT (lispy_c
, c
);
5224 case MULTIBYTE_CHAR_KEYSTROKE_EVENT
:
5226 Lisp_Object lispy_c
;
5227 int c
= event
->code
;
5229 /* Add in the other modifier bits. We took care of ctrl_modifier
5230 just above, and the shift key was taken care of by the X code,
5231 and applied to control characters by make_ctrl_char. */
5232 c
|= (event
->modifiers
5233 & (meta_modifier
| alt_modifier
5234 | hyper_modifier
| super_modifier
| ctrl_modifier
));
5235 /* What about the `shift' modifier ? */
5236 button_down_time
= 0;
5237 XSETFASTINT (lispy_c
, c
);
5241 /* A function key. The symbol may need to have modifier prefixes
5243 case NON_ASCII_KEYSTROKE_EVENT
:
5244 button_down_time
= 0;
5246 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
5247 if (event
->code
== lispy_accent_codes
[i
])
5248 return modify_event_symbol (i
,
5250 Qfunction_key
, Qnil
,
5251 lispy_accent_keys
, &accent_key_syms
,
5252 (sizeof (lispy_accent_keys
)
5253 / sizeof (lispy_accent_keys
[0])));
5257 if (event
->code
>= 0x400 && event
->code
< 0x500)
5258 return modify_event_symbol (event
->code
- 0x400,
5259 event
->modifiers
& ~shift_modifier
,
5260 Qfunction_key
, Qnil
,
5261 lispy_kana_keys
, &func_key_syms
,
5262 (sizeof (lispy_kana_keys
)
5263 / sizeof (lispy_kana_keys
[0])));
5264 #endif /* XK_kana_A */
5267 #ifdef ISO_FUNCTION_KEY_OFFSET
5268 if (event
->code
< FUNCTION_KEY_OFFSET
5269 && event
->code
>= ISO_FUNCTION_KEY_OFFSET
)
5270 return modify_event_symbol (event
->code
- ISO_FUNCTION_KEY_OFFSET
,
5272 Qfunction_key
, Qnil
,
5273 iso_lispy_function_keys
, &func_key_syms
,
5274 (sizeof (iso_lispy_function_keys
)
5275 / sizeof (iso_lispy_function_keys
[0])));
5278 /* Handle system-specific or unknown keysyms. */
5279 if (event
->code
& (1 << 28)
5280 || event
->code
- FUNCTION_KEY_OFFSET
< 0
5281 || (event
->code
- FUNCTION_KEY_OFFSET
5282 >= sizeof lispy_function_keys
/ sizeof *lispy_function_keys
)
5283 || !lispy_function_keys
[event
->code
- FUNCTION_KEY_OFFSET
])
5285 /* We need to use an alist rather than a vector as the cache
5286 since we can't make a vector long enuf. */
5287 if (NILP (current_kboard
->system_key_syms
))
5288 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
5289 return modify_event_symbol (event
->code
,
5292 current_kboard
->Vsystem_key_alist
,
5293 0, ¤t_kboard
->system_key_syms
,
5297 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
5299 Qfunction_key
, Qnil
,
5300 lispy_function_keys
, &func_key_syms
,
5301 (sizeof (lispy_function_keys
)
5302 / sizeof (lispy_function_keys
[0])));
5305 /* A mouse click. Figure out where it is, decide whether it's
5306 a press, click or drag, and build the appropriate structure. */
5307 case MOUSE_CLICK_EVENT
:
5308 #ifndef USE_TOOLKIT_SCROLL_BARS
5309 case SCROLL_BAR_CLICK_EVENT
:
5312 int button
= event
->code
;
5314 Lisp_Object position
;
5315 Lisp_Object
*start_pos_ptr
;
5316 Lisp_Object start_pos
;
5320 /* Build the position as appropriate for this mouse click. */
5321 if (event
->kind
== MOUSE_CLICK_EVENT
)
5323 struct frame
*f
= XFRAME (event
->frame_or_window
);
5324 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5328 /* Ignore mouse events that were made on frame that
5329 have been deleted. */
5330 if (! FRAME_LIVE_P (f
))
5333 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5334 /* EVENT->x and EVENT->y are frame-relative pixel
5335 coordinates at this place. Under old redisplay, COLUMN
5336 and ROW are set to frame relative glyph coordinates
5337 which are then used to determine whether this click is
5338 in a menu (non-toolkit version). */
5339 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
5340 &column
, &row
, NULL
, 1);
5342 /* In the non-toolkit version, clicks on the menu bar
5343 are ordinary button events in the event buffer.
5344 Distinguish them, and invoke the menu.
5346 (In the toolkit version, the toolkit handles the menu bar
5347 and Emacs doesn't know about it until after the user
5348 makes a selection.) */
5349 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
5350 && (event
->modifiers
& down_modifier
))
5352 Lisp_Object items
, item
;
5357 /* Activate the menu bar on the down event. If the
5358 up event comes in before the menu code can deal with it,
5360 if (! (event
->modifiers
& down_modifier
))
5364 /* Find the menu bar item under `column'. */
5366 items
= FRAME_MENU_BAR_ITEMS (f
);
5367 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 4)
5369 Lisp_Object pos
, string
;
5370 string
= AREF (items
, i
+ 1);
5371 pos
= AREF (items
, i
+ 3);
5374 if (column
>= XINT (pos
)
5375 && column
< XINT (pos
) + SCHARS (string
))
5377 item
= AREF (items
, i
);
5382 /* ELisp manual 2.4b says (x y) are window relative but
5383 code says they are frame-relative. */
5385 = Fcons (event
->frame_or_window
,
5387 Fcons (Fcons (event
->x
, event
->y
),
5388 Fcons (make_number (event
->timestamp
),
5391 return Fcons (item
, Fcons (position
, Qnil
));
5393 #endif /* not USE_X_TOOLKIT && not USE_GTK */
5395 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5398 #ifndef USE_TOOLKIT_SCROLL_BARS
5401 /* It's a scrollbar click. */
5403 Lisp_Object portion_whole
;
5406 window
= event
->frame_or_window
;
5407 portion_whole
= Fcons (event
->x
, event
->y
);
5408 part
= *scroll_bar_parts
[(int) event
->part
];
5412 Fcons (Qvertical_scroll_bar
,
5413 Fcons (portion_whole
,
5414 Fcons (make_number (event
->timestamp
),
5415 Fcons (part
, Qnil
)))));
5417 #endif /* not USE_TOOLKIT_SCROLL_BARS */
5419 if (button
>= ASIZE (button_down_location
))
5421 button_down_location
= larger_vector (button_down_location
,
5423 mouse_syms
= larger_vector (mouse_syms
, button
+ 1, Qnil
);
5426 start_pos_ptr
= &AREF (button_down_location
, button
);
5427 start_pos
= *start_pos_ptr
;
5428 *start_pos_ptr
= Qnil
;
5431 /* On window-system frames, use the value of
5432 double-click-fuzz as is. On other frames, interpret it
5433 as a multiple of 1/8 characters. */
5437 if (WINDOWP (event
->frame_or_window
))
5438 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5439 else if (FRAMEP (event
->frame_or_window
))
5440 f
= XFRAME (event
->frame_or_window
);
5444 if (FRAME_WINDOW_P (f
))
5445 fuzz
= double_click_fuzz
;
5447 fuzz
= double_click_fuzz
/ 8;
5449 is_double
= (button
== last_mouse_button
5450 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5451 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5452 && button_down_time
!= 0
5453 && (EQ (Vdouble_click_time
, Qt
)
5454 || (INTEGERP (Vdouble_click_time
)
5455 && ((int)(event
->timestamp
- button_down_time
)
5456 < XINT (Vdouble_click_time
)))));
5459 last_mouse_button
= button
;
5460 last_mouse_x
= XINT (event
->x
);
5461 last_mouse_y
= XINT (event
->y
);
5463 /* If this is a button press, squirrel away the location, so
5464 we can decide later whether it was a click or a drag. */
5465 if (event
->modifiers
& down_modifier
)
5469 double_click_count
++;
5470 event
->modifiers
|= ((double_click_count
> 2)
5475 double_click_count
= 1;
5476 button_down_time
= event
->timestamp
;
5477 *start_pos_ptr
= Fcopy_alist (position
);
5480 /* Now we're releasing a button - check the co-ordinates to
5481 see if this was a click or a drag. */
5482 else if (event
->modifiers
& up_modifier
)
5484 /* If we did not see a down before this up, ignore the up.
5485 Probably this happened because the down event chose a
5486 menu item. It would be an annoyance to treat the
5487 release of the button that chose the menu item as a
5490 if (!CONSP (start_pos
))
5493 event
->modifiers
&= ~up_modifier
;
5494 #if 0 /* Formerly we treated an up with no down as a click event. */
5495 if (!CONSP (start_pos
))
5496 event
->modifiers
|= click_modifier
;
5501 EMACS_INT xdiff
= double_click_fuzz
, ydiff
= double_click_fuzz
;
5503 /* The third element of every position
5504 should be the (x,y) pair. */
5505 down
= Fcar (Fcdr (Fcdr (start_pos
)));
5507 && INTEGERP (XCAR (down
)) && INTEGERP (XCDR (down
)))
5509 xdiff
= XINT (event
->x
) - XINT (XCAR (down
));
5510 ydiff
= XINT (event
->y
) - XINT (XCDR (down
));
5513 if (xdiff
< double_click_fuzz
&& xdiff
> - double_click_fuzz
5514 && ydiff
< double_click_fuzz
&& ydiff
> - double_click_fuzz
5515 /* Maybe the mouse has moved a lot, caused scrolling, and
5516 eventually ended up at the same screen position (but
5517 not buffer position) in which case it is a drag, not
5519 /* FIXME: OTOH if the buffer position has changed
5520 because of a timer or process filter rather than
5521 because of mouse movement, it should be considered as
5522 a click. But mouse-drag-region completely ignores
5523 this case and it hasn't caused any real problem, so
5524 it's probably OK to ignore it as well. */
5525 && EQ (Fcar (Fcdr (start_pos
)), Fcar (Fcdr (position
))))
5526 /* Mouse hasn't moved (much). */
5527 event
->modifiers
|= click_modifier
;
5530 button_down_time
= 0;
5531 event
->modifiers
|= drag_modifier
;
5534 /* Don't check is_double; treat this as multiple
5535 if the down-event was multiple. */
5536 if (double_click_count
> 1)
5537 event
->modifiers
|= ((double_click_count
> 2)
5543 /* Every mouse event should either have the down_modifier or
5544 the up_modifier set. */
5548 /* Get the symbol we should use for the mouse click. */
5551 head
= modify_event_symbol (button
,
5553 Qmouse_click
, Vlispy_mouse_stem
,
5556 XVECTOR (mouse_syms
)->size
);
5557 if (event
->modifiers
& drag_modifier
)
5562 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
5565 Fcons (make_number (double_click_count
),
5576 Lisp_Object position
;
5579 /* Build the position as appropriate for this mouse click. */
5580 struct frame
*f
= XFRAME (event
->frame_or_window
);
5582 /* Ignore wheel events that were made on frame that have been
5584 if (! FRAME_LIVE_P (f
))
5587 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5590 /* Set double or triple modifiers to indicate the wheel speed. */
5592 /* On window-system frames, use the value of
5593 double-click-fuzz as is. On other frames, interpret it
5594 as a multiple of 1/8 characters. */
5599 if (WINDOWP (event
->frame_or_window
))
5600 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5601 else if (FRAMEP (event
->frame_or_window
))
5602 f
= XFRAME (event
->frame_or_window
);
5606 if (FRAME_WINDOW_P (f
))
5607 fuzz
= double_click_fuzz
;
5609 fuzz
= double_click_fuzz
/ 8;
5611 is_double
= (last_mouse_button
< 0
5612 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5613 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5614 && button_down_time
!= 0
5615 && (EQ (Vdouble_click_time
, Qt
)
5616 || (INTEGERP (Vdouble_click_time
)
5617 && ((int)(event
->timestamp
- button_down_time
)
5618 < XINT (Vdouble_click_time
)))));
5621 double_click_count
++;
5622 event
->modifiers
|= ((double_click_count
> 2)
5628 double_click_count
= 1;
5629 event
->modifiers
|= click_modifier
;
5632 button_down_time
= event
->timestamp
;
5633 /* Use a negative value to distinguish wheel from mouse button. */
5634 last_mouse_button
= -1;
5635 last_mouse_x
= XINT (event
->x
);
5636 last_mouse_y
= XINT (event
->y
);
5642 if (event
->modifiers
& up_modifier
)
5644 /* Emit a wheel-up event. */
5645 event
->modifiers
&= ~up_modifier
;
5648 else if (event
->modifiers
& down_modifier
)
5650 /* Emit a wheel-down event. */
5651 event
->modifiers
&= ~down_modifier
;
5655 /* Every wheel event should either have the down_modifier or
5656 the up_modifier set. */
5659 /* Get the symbol we should use for the wheel event. */
5660 head
= modify_event_symbol (symbol_num
,
5666 ASIZE (wheel_syms
));
5669 if (event
->modifiers
& (double_modifier
| triple_modifier
))
5672 Fcons (make_number (double_click_count
),
5681 #ifdef USE_TOOLKIT_SCROLL_BARS
5683 /* We don't have down and up events if using toolkit scroll bars,
5684 so make this always a click event. Store in the `part' of
5685 the Lisp event a symbol which maps to the following actions:
5687 `above_handle' page up
5688 `below_handle' page down
5692 `bottom' bottom of buffer
5693 `handle' thumb has been dragged.
5694 `end-scroll' end of interaction with scroll bar
5696 The incoming input_event contains in its `part' member an
5697 index of type `enum scroll_bar_part' which we can use as an
5698 index in scroll_bar_parts to get the appropriate symbol. */
5700 case SCROLL_BAR_CLICK_EVENT
:
5702 Lisp_Object position
, head
, window
, portion_whole
, part
;
5704 window
= event
->frame_or_window
;
5705 portion_whole
= Fcons (event
->x
, event
->y
);
5706 part
= *scroll_bar_parts
[(int) event
->part
];
5710 Fcons (Qvertical_scroll_bar
,
5711 Fcons (portion_whole
,
5712 Fcons (make_number (event
->timestamp
),
5713 Fcons (part
, Qnil
)))));
5715 /* Always treat scroll bar events as clicks. */
5716 event
->modifiers
|= click_modifier
;
5717 event
->modifiers
&= ~up_modifier
;
5719 if (event
->code
>= ASIZE (mouse_syms
))
5720 mouse_syms
= larger_vector (mouse_syms
, event
->code
+ 1, Qnil
);
5722 /* Get the symbol we should use for the mouse click. */
5723 head
= modify_event_symbol (event
->code
,
5728 XVECTOR (mouse_syms
)->size
);
5729 return Fcons (head
, Fcons (position
, Qnil
));
5732 #endif /* USE_TOOLKIT_SCROLL_BARS */
5735 case W32_SCROLL_BAR_CLICK_EVENT
:
5737 int button
= event
->code
;
5739 Lisp_Object position
;
5740 Lisp_Object
*start_pos_ptr
;
5741 Lisp_Object start_pos
;
5745 Lisp_Object portion_whole
;
5748 window
= event
->frame_or_window
;
5749 portion_whole
= Fcons (event
->x
, event
->y
);
5750 part
= *scroll_bar_parts
[(int) event
->part
];
5754 Fcons (Qvertical_scroll_bar
,
5755 Fcons (portion_whole
,
5756 Fcons (make_number (event
->timestamp
),
5757 Fcons (part
, Qnil
)))));
5760 /* Always treat W32 scroll bar events as clicks. */
5761 event
->modifiers
|= click_modifier
;
5764 /* Get the symbol we should use for the mouse click. */
5767 head
= modify_event_symbol (button
,
5772 XVECTOR (mouse_syms
)->size
);
5778 #endif /* WINDOWSNT */
5780 case DRAG_N_DROP_EVENT
:
5783 Lisp_Object head
, position
;
5786 /* The frame_or_window field should be a cons of the frame in
5787 which the event occurred and a list of the filenames
5789 if (! CONSP (event
->frame_or_window
))
5792 f
= XFRAME (XCAR (event
->frame_or_window
));
5793 files
= XCDR (event
->frame_or_window
);
5795 /* Ignore mouse events that were made on frames that
5796 have been deleted. */
5797 if (! FRAME_LIVE_P (f
))
5800 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5803 head
= modify_event_symbol (0, event
->modifiers
,
5805 lispy_drag_n_drop_names
,
5806 &drag_n_drop_syms
, 1);
5812 #endif /* HAVE_MOUSE */
5814 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
5815 || defined (USE_GTK)
5816 case MENU_BAR_EVENT
:
5817 if (EQ (event
->arg
, event
->frame_or_window
))
5818 /* This is the prefix key. We translate this to
5819 `(menu_bar)' because the code in keyboard.c for menu
5820 events, which we use, relies on this. */
5821 return Fcons (Qmenu_bar
, Qnil
);
5825 case SELECT_WINDOW_EVENT
:
5826 /* Make an event (select-window (WINDOW)). */
5827 return Fcons (Qselect_window
,
5828 Fcons (Fcons (event
->frame_or_window
, Qnil
),
5831 case TOOL_BAR_EVENT
:
5832 if (EQ (event
->arg
, event
->frame_or_window
))
5833 /* This is the prefix key. We translate this to
5834 `(tool_bar)' because the code in keyboard.c for tool bar
5835 events, which we use, relies on this. */
5836 return Fcons (Qtool_bar
, Qnil
);
5837 else if (SYMBOLP (event
->arg
))
5838 return apply_modifiers (event
->modifiers
, event
->arg
);
5841 case USER_SIGNAL_EVENT
:
5842 /* A user signal. */
5843 return *lispy_user_signals
[event
->code
];
5845 case SAVE_SESSION_EVENT
:
5846 return Qsave_session
;
5848 /* The 'kind' field of the event is something we don't recognize. */
5857 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
5859 Lisp_Object bar_window
;
5860 enum scroll_bar_part part
;
5864 /* Is it a scroll bar movement? */
5865 if (frame
&& ! NILP (bar_window
))
5867 Lisp_Object part_sym
;
5869 part_sym
= *scroll_bar_parts
[(int) part
];
5870 return Fcons (Qscroll_bar_movement
,
5871 (Fcons (Fcons (bar_window
,
5872 Fcons (Qvertical_scroll_bar
,
5873 Fcons (Fcons (x
, y
),
5874 Fcons (make_number (time
),
5880 /* Or is it an ordinary mouse movement? */
5883 Lisp_Object position
;
5885 position
= make_lispy_position (frame
, &x
, &y
, time
);
5887 return Fcons (Qmouse_movement
,
5893 #endif /* HAVE_MOUSE */
5895 /* Construct a switch frame event. */
5897 make_lispy_switch_frame (frame
)
5900 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
5903 /* Manipulating modifiers. */
5905 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
5907 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
5908 SYMBOL's name of the end of the modifiers; the string from this
5909 position is the unmodified symbol name.
5911 This doesn't use any caches. */
5914 parse_modifiers_uncached (symbol
, modifier_end
)
5922 CHECK_SYMBOL (symbol
);
5925 name
= SYMBOL_NAME (symbol
);
5927 for (i
= 0; i
+2 <= SBYTES (name
); )
5929 int this_mod_end
= 0;
5932 /* See if the name continues with a modifier word.
5933 Check that the word appears, but don't check what follows it.
5934 Set this_mod and this_mod_end to record what we find. */
5936 switch (SREF (name
, i
))
5938 #define SINGLE_LETTER_MOD(BIT) \
5939 (this_mod_end = i + 1, this_mod = BIT)
5942 SINGLE_LETTER_MOD (alt_modifier
);
5946 SINGLE_LETTER_MOD (ctrl_modifier
);
5950 SINGLE_LETTER_MOD (hyper_modifier
);
5954 SINGLE_LETTER_MOD (meta_modifier
);
5958 SINGLE_LETTER_MOD (shift_modifier
);
5962 SINGLE_LETTER_MOD (super_modifier
);
5965 #undef SINGLE_LETTER_MOD
5967 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
5968 if (i + LEN + 1 <= SBYTES (name) \
5969 && ! strncmp (SDATA (name) + i, NAME, LEN)) \
5971 this_mod_end = i + LEN; \
5976 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
5977 MULTI_LETTER_MOD (down_modifier
, "down", 4);
5978 MULTI_LETTER_MOD (double_modifier
, "double", 6);
5982 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
5984 #undef MULTI_LETTER_MOD
5988 /* If we found no modifier, stop looking for them. */
5989 if (this_mod_end
== 0)
5992 /* Check there is a dash after the modifier, so that it
5993 really is a modifier. */
5994 if (this_mod_end
>= SBYTES (name
)
5995 || SREF (name
, this_mod_end
) != '-')
5998 /* This modifier is real; look for another. */
5999 modifiers
|= this_mod
;
6000 i
= this_mod_end
+ 1;
6003 /* Should we include the `click' modifier? */
6004 if (! (modifiers
& (down_modifier
| drag_modifier
6005 | double_modifier
| triple_modifier
))
6006 && i
+ 7 == SBYTES (name
)
6007 && strncmp (SDATA (name
) + i
, "mouse-", 6) == 0
6008 && ('0' <= SREF (name
, i
+ 6) && SREF (name
, i
+ 6) <= '9'))
6009 modifiers
|= click_modifier
;
6017 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
6018 prepended to the string BASE[0..BASE_LEN-1].
6019 This doesn't use any caches. */
6021 apply_modifiers_uncached (modifiers
, base
, base_len
, base_len_byte
)
6024 int base_len
, base_len_byte
;
6026 /* Since BASE could contain nulls, we can't use intern here; we have
6027 to use Fintern, which expects a genuine Lisp_String, and keeps a
6030 = (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
6036 /* Only the event queue may use the `up' modifier; it should always
6037 be turned into a click or drag event before presented to lisp code. */
6038 if (modifiers
& up_modifier
)
6041 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
6042 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
6043 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
6044 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
6045 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
6046 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
6047 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
6048 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
6049 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
6050 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
6051 /* The click modifier is denoted by the absence of other modifiers. */
6055 mod_len
= p
- new_mods
;
6059 Lisp_Object new_name
;
6061 new_name
= make_uninit_multibyte_string (mod_len
+ base_len
,
6062 mod_len
+ base_len_byte
);
6063 bcopy (new_mods
, SDATA (new_name
), mod_len
);
6064 bcopy (base
, SDATA (new_name
) + mod_len
, base_len_byte
);
6066 return Fintern (new_name
, Qnil
);
6071 static char *modifier_names
[] =
6073 "up", "down", "drag", "click", "double", "triple", 0, 0,
6074 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
6075 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
6077 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
6079 static Lisp_Object modifier_symbols
;
6081 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
6083 lispy_modifier_list (modifiers
)
6086 Lisp_Object modifier_list
;
6089 modifier_list
= Qnil
;
6090 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
6091 if (modifiers
& (1<<i
))
6092 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
6095 return modifier_list
;
6099 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
6100 where UNMODIFIED is the unmodified form of SYMBOL,
6101 MASK is the set of modifiers present in SYMBOL's name.
6102 This is similar to parse_modifiers_uncached, but uses the cache in
6103 SYMBOL's Qevent_symbol_element_mask property, and maintains the
6104 Qevent_symbol_elements property. */
6107 parse_modifiers (symbol
)
6110 Lisp_Object elements
;
6112 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
6113 if (CONSP (elements
))
6118 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
6119 Lisp_Object unmodified
;
6122 unmodified
= Fintern (make_string (SDATA (SYMBOL_NAME (symbol
)) + end
,
6123 SBYTES (SYMBOL_NAME (symbol
)) - end
),
6126 if (modifiers
& ~INTMASK
)
6128 XSETFASTINT (mask
, modifiers
);
6129 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
6131 /* Cache the parsing results on SYMBOL. */
6132 Fput (symbol
, Qevent_symbol_element_mask
,
6134 Fput (symbol
, Qevent_symbol_elements
,
6135 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
6137 /* Since we know that SYMBOL is modifiers applied to unmodified,
6138 it would be nice to put that in unmodified's cache.
6139 But we can't, since we're not sure that parse_modifiers is
6146 /* Apply the modifiers MODIFIERS to the symbol BASE.
6147 BASE must be unmodified.
6149 This is like apply_modifiers_uncached, but uses BASE's
6150 Qmodifier_cache property, if present. It also builds
6151 Qevent_symbol_elements properties, since it has that info anyway.
6153 apply_modifiers copies the value of BASE's Qevent_kind property to
6154 the modified symbol. */
6156 apply_modifiers (modifiers
, base
)
6160 Lisp_Object cache
, index
, entry
, new_symbol
;
6162 /* Mask out upper bits. We don't know where this value's been. */
6163 modifiers
&= INTMASK
;
6165 /* The click modifier never figures into cache indices. */
6166 cache
= Fget (base
, Qmodifier_cache
);
6167 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
6168 entry
= assq_no_quit (index
, cache
);
6171 new_symbol
= XCDR (entry
);
6174 /* We have to create the symbol ourselves. */
6175 new_symbol
= apply_modifiers_uncached (modifiers
,
6176 SDATA (SYMBOL_NAME (base
)),
6177 SCHARS (SYMBOL_NAME (base
)),
6178 SBYTES (SYMBOL_NAME (base
)));
6180 /* Add the new symbol to the base's cache. */
6181 entry
= Fcons (index
, new_symbol
);
6182 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
6184 /* We have the parsing info now for free, so we could add it to
6186 XSETFASTINT (index, modifiers);
6187 Fput (new_symbol, Qevent_symbol_element_mask,
6188 Fcons (base, Fcons (index, Qnil)));
6189 Fput (new_symbol, Qevent_symbol_elements,
6190 Fcons (base, lispy_modifier_list (modifiers)));
6191 Sadly, this is only correct if `base' is indeed a base event,
6192 which is not necessarily the case. -stef */
6195 /* Make sure this symbol is of the same kind as BASE.
6197 You'd think we could just set this once and for all when we
6198 intern the symbol above, but reorder_modifiers may call us when
6199 BASE's property isn't set right; we can't assume that just
6200 because it has a Qmodifier_cache property it must have its
6201 Qevent_kind set right as well. */
6202 if (NILP (Fget (new_symbol
, Qevent_kind
)))
6206 kind
= Fget (base
, Qevent_kind
);
6208 Fput (new_symbol
, Qevent_kind
, kind
);
6215 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
6216 return a symbol with the modifiers placed in the canonical order.
6217 Canonical order is alphabetical, except for down and drag, which
6218 always come last. The 'click' modifier is never written out.
6220 Fdefine_key calls this to make sure that (for example) C-M-foo
6221 and M-C-foo end up being equivalent in the keymap. */
6224 reorder_modifiers (symbol
)
6227 /* It's hopefully okay to write the code this way, since everything
6228 will soon be in caches, and no consing will be done at all. */
6231 parsed
= parse_modifiers (symbol
);
6232 return apply_modifiers ((int) XINT (XCAR (XCDR (parsed
))),
6237 /* For handling events, we often want to produce a symbol whose name
6238 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
6239 to some base, like the name of a function key or mouse button.
6240 modify_event_symbol produces symbols of this sort.
6242 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
6243 is the name of the i'th symbol. TABLE_SIZE is the number of elements
6246 Alternatively, NAME_ALIST_OR_STEM is either an alist mapping codes
6247 into symbol names, or a string specifying a name stem used to
6248 construct a symbol name or the form `STEM-N', where N is the decimal
6249 representation of SYMBOL_NUM. NAME_ALIST_OR_STEM is used if it is
6250 non-nil; otherwise NAME_TABLE is used.
6252 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
6253 persist between calls to modify_event_symbol that it can use to
6254 store a cache of the symbols it's generated for this NAME_TABLE
6255 before. The object stored there may be a vector or an alist.
6257 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
6259 MODIFIERS is a set of modifier bits (as given in struct input_events)
6260 whose prefixes should be applied to the symbol name.
6262 SYMBOL_KIND is the value to be placed in the event_kind property of
6263 the returned symbol.
6265 The symbols we create are supposed to have an
6266 `event-symbol-elements' property, which lists the modifiers present
6267 in the symbol's name. */
6270 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist_or_stem
,
6271 name_table
, symbol_table
, table_size
)
6274 Lisp_Object symbol_kind
;
6275 Lisp_Object name_alist_or_stem
;
6277 Lisp_Object
*symbol_table
;
6278 unsigned int table_size
;
6281 Lisp_Object symbol_int
;
6283 /* Get rid of the "vendor-specific" bit here. */
6284 XSETINT (symbol_int
, symbol_num
& 0xffffff);
6286 /* Is this a request for a valid symbol? */
6287 if (symbol_num
< 0 || symbol_num
>= table_size
)
6290 if (CONSP (*symbol_table
))
6291 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
6293 /* If *symbol_table doesn't seem to be initialized properly, fix that.
6294 *symbol_table should be a lisp vector TABLE_SIZE elements long,
6295 where the Nth element is the symbol for NAME_TABLE[N], or nil if
6296 we've never used that symbol before. */
6299 if (! VECTORP (*symbol_table
)
6300 || XVECTOR (*symbol_table
)->size
!= table_size
)
6304 XSETFASTINT (size
, table_size
);
6305 *symbol_table
= Fmake_vector (size
, Qnil
);
6308 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
6311 /* Have we already used this symbol before? */
6314 /* No; let's create it. */
6315 if (CONSP (name_alist_or_stem
))
6316 value
= Fcdr_safe (Fassq (symbol_int
, name_alist_or_stem
));
6317 else if (STRINGP (name_alist_or_stem
))
6319 int len
= SBYTES (name_alist_or_stem
);
6320 char *buf
= (char *) alloca (len
+ 50);
6321 sprintf (buf
, "%s-%ld", SDATA (name_alist_or_stem
),
6322 (long) XINT (symbol_int
) + 1);
6323 value
= intern (buf
);
6325 else if (name_table
!= 0 && name_table
[symbol_num
])
6326 value
= intern (name_table
[symbol_num
]);
6328 #ifdef HAVE_WINDOW_SYSTEM
6331 char *name
= x_get_keysym_name (symbol_num
);
6333 value
= intern (name
);
6340 sprintf (buf
, "key-%d", symbol_num
);
6341 value
= intern (buf
);
6344 if (CONSP (*symbol_table
))
6345 *symbol_table
= Fcons (Fcons (symbol_int
, value
), *symbol_table
);
6347 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
6349 /* Fill in the cache entries for this symbol; this also
6350 builds the Qevent_symbol_elements property, which the user
6352 apply_modifiers (modifiers
& click_modifier
, value
);
6353 Fput (value
, Qevent_kind
, symbol_kind
);
6356 /* Apply modifiers to that symbol. */
6357 return apply_modifiers (modifiers
, value
);
6360 /* Convert a list that represents an event type,
6361 such as (ctrl meta backspace), into the usual representation of that
6362 event type as a number or a symbol. */
6364 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
6365 doc
: /* Convert the event description list EVENT-DESC to an event type.
6366 EVENT-DESC should contain one base event type (a character or symbol)
6367 and zero or more modifier names (control, meta, hyper, super, shift, alt,
6368 drag, down, double or triple). The base must be last.
6369 The return value is an event type (a character or symbol) which
6370 has the same base event type and all the specified modifiers. */)
6372 Lisp_Object event_desc
;
6380 while (CONSP (rest
))
6388 /* Given a symbol, see if it is a modifier name. */
6389 if (SYMBOLP (elt
) && CONSP (rest
))
6390 this = parse_solitary_modifier (elt
);
6394 else if (!NILP (base
))
6395 error ("Two bases given in one event");
6401 /* Let the symbol A refer to the character A. */
6402 if (SYMBOLP (base
) && SCHARS (SYMBOL_NAME (base
)) == 1)
6403 XSETINT (base
, SREF (SYMBOL_NAME (base
), 0));
6405 if (INTEGERP (base
))
6407 /* Turn (shift a) into A. */
6408 if ((modifiers
& shift_modifier
) != 0
6409 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
6411 XSETINT (base
, XINT (base
) - ('a' - 'A'));
6412 modifiers
&= ~shift_modifier
;
6415 /* Turn (control a) into C-a. */
6416 if (modifiers
& ctrl_modifier
)
6417 return make_number ((modifiers
& ~ctrl_modifier
)
6418 | make_ctrl_char (XINT (base
)));
6420 return make_number (modifiers
| XINT (base
));
6422 else if (SYMBOLP (base
))
6423 return apply_modifiers (modifiers
, base
);
6426 error ("Invalid base event");
6431 /* Try to recognize SYMBOL as a modifier name.
6432 Return the modifier flag bit, or 0 if not recognized. */
6435 parse_solitary_modifier (symbol
)
6438 Lisp_Object name
= SYMBOL_NAME (symbol
);
6440 switch (SREF (name
, 0))
6442 #define SINGLE_LETTER_MOD(BIT) \
6443 if (SBYTES (name) == 1) \
6446 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
6447 if (LEN == SBYTES (name) \
6448 && ! strncmp (SDATA (name), NAME, LEN)) \
6452 SINGLE_LETTER_MOD (alt_modifier
);
6456 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
6460 SINGLE_LETTER_MOD (ctrl_modifier
);
6464 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
6465 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
6469 SINGLE_LETTER_MOD (hyper_modifier
);
6473 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
6477 SINGLE_LETTER_MOD (meta_modifier
);
6481 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
6485 SINGLE_LETTER_MOD (shift_modifier
);
6489 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
6490 MULTI_LETTER_MOD (super_modifier
, "super", 5);
6491 SINGLE_LETTER_MOD (super_modifier
);
6495 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
6496 MULTI_LETTER_MOD (down_modifier
, "down", 4);
6497 MULTI_LETTER_MOD (double_modifier
, "double", 6);
6501 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
6504 #undef SINGLE_LETTER_MOD
6505 #undef MULTI_LETTER_MOD
6511 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
6512 Such a list is not valid as an event,
6513 but it can be a Lucid-style event type list. */
6516 lucid_event_type_list_p (object
)
6521 if (! CONSP (object
))
6524 if (EQ (XCAR (object
), Qhelp_echo
)
6525 || EQ (XCAR (object
), Qvertical_line
)
6526 || EQ (XCAR (object
), Qmode_line
)
6527 || EQ (XCAR (object
), Qheader_line
))
6530 for (tail
= object
; CONSP (tail
); tail
= XCDR (tail
))
6534 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
6541 /* Store into *addr a value nonzero if terminal input chars are available.
6542 Serves the purpose of ioctl (0, FIONREAD, addr)
6543 but works even if FIONREAD does not exist.
6544 (In fact, this may actually read some input.)
6546 If READABLE_EVENTS_DO_TIMERS_NOW is set in FLAGS, actually run
6547 timer events that are ripe.
6548 If READABLE_EVENTS_FILTER_EVENTS is set in FLAGS, ignore internal
6549 events (FOCUS_IN_EVENT).
6550 If READABLE_EVENTS_IGNORE_SQUEEZABLES is set in FLAGS, ignore mouse
6551 movements and toolkit scroll bar thumb drags. */
6554 get_input_pending (addr
, flags
)
6558 /* First of all, have we already counted some input? */
6559 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6561 /* If input is being read as it arrives, and we have none, there is none. */
6562 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
6565 /* Try to read some input and see how much we get. */
6567 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6570 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
6573 gobble_input (expected
)
6578 if (interrupt_input
)
6581 mask
= sigblock (sigmask (SIGIO
));
6582 read_avail_input (expected
);
6586 #ifdef POLL_FOR_INPUT
6587 if (read_socket_hook
&& !interrupt_input
&& poll_suppress_count
== 0)
6590 mask
= sigblock (sigmask (SIGALRM
));
6591 read_avail_input (expected
);
6597 read_avail_input (expected
);
6601 /* Put a BUFFER_SWITCH_EVENT in the buffer
6602 so that read_key_sequence will notice the new current buffer. */
6605 record_asynch_buffer_change ()
6607 struct input_event event
;
6611 event
.kind
= BUFFER_SWITCH_EVENT
;
6612 event
.frame_or_window
= Qnil
;
6616 /* We don't need a buffer-switch event unless Emacs is waiting for input.
6617 The purpose of the event is to make read_key_sequence look up the
6618 keymaps again. If we aren't in read_key_sequence, we don't need one,
6619 and the event could cause trouble by messing up (input-pending-p). */
6620 tem
= Fwaiting_for_user_input_p ();
6624 /* We never need these events if we have no asynchronous subprocesses. */
6628 /* Make sure no interrupt happens while storing the event. */
6630 if (interrupt_input
)
6633 mask
= sigblock (sigmask (SIGIO
));
6634 kbd_buffer_store_event (&event
);
6641 kbd_buffer_store_event (&event
);
6648 /* Read any terminal input already buffered up by the system
6649 into the kbd_buffer, but do not wait.
6651 EXPECTED should be nonzero if the caller knows there is some input.
6653 Except on VMS, all input is read by this function.
6654 If interrupt_input is nonzero, this function MUST be called
6655 only when SIGIO is blocked.
6657 Returns the number of keyboard chars read, or -1 meaning
6658 this is a bad time to try to read input. */
6661 read_avail_input (expected
)
6667 if (read_socket_hook
)
6670 struct input_event hold_quit
;
6672 EVENT_INIT (hold_quit
);
6673 hold_quit
.kind
= NO_EVENT
;
6675 /* No need for FIONREAD or fcntl; just say don't wait. */
6676 while (nr
= (*read_socket_hook
) (input_fd
, expected
, &hold_quit
), nr
> 0)
6681 if (hold_quit
.kind
!= NO_EVENT
)
6682 kbd_buffer_store_event (&hold_quit
);
6686 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
6687 the kbd_buffer can really hold. That may prevent loss
6688 of characters on some systems when input is stuffed at us. */
6689 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
6692 /* Determine how many characters we should *try* to read. */
6695 #else /* not WINDOWSNT */
6697 n_to_read
= dos_keysns ();
6700 #else /* not MSDOS */
6702 /* Find out how much input is available. */
6703 if (ioctl (input_fd
, FIONREAD
, &n_to_read
) < 0)
6704 /* Formerly simply reported no input, but that sometimes led to
6705 a failure of Emacs to terminate.
6706 SIGHUP seems appropriate if we can't reach the terminal. */
6707 /* ??? Is it really right to send the signal just to this process
6708 rather than to the whole process group?
6709 Perhaps on systems with FIONREAD Emacs is alone in its group. */
6711 if (! noninteractive
)
6712 kill (getpid (), SIGHUP
);
6718 if (n_to_read
> sizeof cbuf
)
6719 n_to_read
= sizeof cbuf
;
6720 #else /* no FIONREAD */
6721 #if defined (USG) || defined (DGUX) || defined(CYGWIN)
6722 /* Read some input if available, but don't wait. */
6723 n_to_read
= sizeof cbuf
;
6724 fcntl (input_fd
, F_SETFL
, O_NDELAY
);
6729 #endif /* not MSDOS */
6730 #endif /* not WINDOWSNT */
6732 /* Now read; for one reason or another, this will not block.
6733 NREAD is set to the number of chars read. */
6737 cbuf
[0] = dos_keyread ();
6740 nread
= emacs_read (input_fd
, cbuf
, n_to_read
);
6742 /* POSIX infers that processes which are not in the session leader's
6743 process group won't get SIGHUP's at logout time. BSDI adheres to
6744 this part standard and returns -1 from read (0) with errno==EIO
6745 when the control tty is taken away.
6746 Jeffrey Honig <jch@bsdi.com> says this is generally safe. */
6747 if (nread
== -1 && errno
== EIO
)
6749 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
6750 /* The kernel sometimes fails to deliver SIGHUP for ptys.
6751 This looks incorrect, but it isn't, because _BSD causes
6752 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
6753 and that causes a value other than 0 when there is no input. */
6759 /* We used to retry the read if it was interrupted.
6760 But this does the wrong thing when O_NDELAY causes
6761 an EAGAIN error. Does anybody know of a situation
6762 where a retry is actually needed? */
6764 nread
< 0 && (errno
== EAGAIN
6778 #if defined (USG) || defined (DGUX) || defined (CYGWIN)
6779 fcntl (input_fd
, F_SETFL
, 0);
6780 #endif /* USG or DGUX or CYGWIN */
6781 #endif /* no FIONREAD */
6782 for (i
= 0; i
< nread
; i
++)
6784 struct input_event buf
;
6786 buf
.kind
= ASCII_KEYSTROKE_EVENT
;
6788 if (meta_key
== 1 && (cbuf
[i
] & 0x80))
6789 buf
.modifiers
= meta_modifier
;
6794 buf
.frame_or_window
= selected_frame
;
6797 kbd_buffer_store_event (&buf
);
6798 /* Don't look at input that follows a C-g too closely.
6799 This reduces lossage due to autorepeat on C-g. */
6800 if (buf
.kind
== ASCII_KEYSTROKE_EVENT
6801 && buf
.code
== quit_char
)
6808 #endif /* not VMS */
6811 handle_async_input ()
6814 extern int select_alarmed
;
6817 interrupt_input_pending
= 0;
6822 nread
= read_avail_input (1);
6823 /* -1 means it's not ok to read the input now.
6824 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
6825 0 means there was no keyboard input available. */
6830 select_alarmed
= 1; /* Force the select emulator back to life */
6835 #ifdef SIGIO /* for entire page */
6836 /* Note SIGIO has been undef'd if FIONREAD is missing. */
6839 input_available_signal (signo
)
6842 /* Must preserve main program's value of errno. */
6843 int old_errno
= errno
;
6844 #if defined (USG) && !defined (POSIX_SIGNALS)
6845 /* USG systems forget handlers when they are used;
6846 must reestablish each time */
6847 signal (signo
, input_available_signal
);
6855 interrupt_input_pending
= 1;
6857 SIGNAL_THREAD_CHECK (signo
);
6860 if (input_available_clear_time
)
6861 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6864 handle_async_input ();
6874 /* Send ourselves a SIGIO.
6876 This function exists so that the UNBLOCK_INPUT macro in
6877 blockinput.h can have some way to take care of input we put off
6878 dealing with, without assuming that every file which uses
6879 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
6881 reinvoke_input_signal ()
6884 handle_async_input ();
6890 static void menu_bar_item
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
, void*));
6891 static Lisp_Object menu_bar_one_keymap_changed_items
;
6893 /* These variables hold the vector under construction within
6894 menu_bar_items and its subroutines, and the current index
6895 for storing into that vector. */
6896 static Lisp_Object menu_bar_items_vector
;
6897 static int menu_bar_items_index
;
6899 /* Return a vector of menu items for a menu bar, appropriate
6900 to the current buffer. Each item has three elements in the vector:
6903 OLD is an old vector we can optionally reuse, or nil. */
6906 menu_bar_items (old
)
6909 /* The number of keymaps we're scanning right now, and the number of
6910 keymaps we have allocated space for. */
6913 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
6914 in the current keymaps, or nil where it is not a prefix. */
6917 Lisp_Object def
, tail
;
6926 /* In order to build the menus, we need to call the keymap
6927 accessors. They all call QUIT. But this function is called
6928 during redisplay, during which a quit is fatal. So inhibit
6929 quitting while building the menus.
6930 We do this instead of specbind because (1) errors will clear it anyway
6931 and (2) this avoids risk of specpdl overflow. */
6932 oquit
= Vinhibit_quit
;
6936 menu_bar_items_vector
= old
;
6938 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
6939 menu_bar_items_index
= 0;
6941 /* Build our list of keymaps.
6942 If we recognize a function key and replace its escape sequence in
6943 keybuf with its symbol, or if the sequence starts with a mouse
6944 click and we need to switch buffers, we jump back here to rebuild
6945 the initial keymaps from the current buffer. */
6949 /* Should overriding-terminal-local-map and overriding-local-map apply? */
6950 if (!NILP (Voverriding_local_map_menu_flag
))
6952 /* Yes, use them (if non-nil) as well as the global map. */
6953 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
6955 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
6956 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
6957 if (!NILP (Voverriding_local_map
))
6958 maps
[nmaps
++] = Voverriding_local_map
;
6962 /* No, so use major and minor mode keymaps and keymap property.
6963 Note that menu-bar bindings in the local-map and keymap
6964 properties may not work reliable, as they are only
6965 recognized when the menu-bar (or mode-line) is updated,
6966 which does not normally happen after every command. */
6969 nminor
= current_minor_maps (NULL
, &tmaps
);
6970 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
6972 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
6973 maps
[nmaps
++] = tem
;
6974 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
6976 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
6978 maps
[nmaps
++] = current_global_map
;
6981 /* Look up in each map the dummy prefix key `menu-bar'. */
6985 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
6986 if (!NILP (maps
[mapno
]))
6988 def
= get_keymap (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0, 1),
6992 menu_bar_one_keymap_changed_items
= Qnil
;
6993 map_keymap (def
, menu_bar_item
, Qnil
, NULL
, 1);
6997 /* Move to the end those items that should be at the end. */
6999 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCDR (tail
))
7002 int end
= menu_bar_items_index
;
7004 for (i
= 0; i
< end
; i
+= 4)
7005 if (EQ (XCAR (tail
), XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7007 Lisp_Object tem0
, tem1
, tem2
, tem3
;
7008 /* Move the item at index I to the end,
7009 shifting all the others forward. */
7010 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
7011 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
7012 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7013 tem3
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3];
7015 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7016 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7017 (end
- i
- 4) * sizeof (Lisp_Object
));
7018 XVECTOR (menu_bar_items_vector
)->contents
[end
- 4] = tem0
;
7019 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem1
;
7020 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem2
;
7021 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem3
;
7026 /* Add nil, nil, nil, nil at the end. */
7027 i
= menu_bar_items_index
;
7028 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7031 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7032 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7033 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7034 menu_bar_items_vector
= tem
;
7036 /* Add this item. */
7037 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7038 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7039 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7040 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7041 menu_bar_items_index
= i
;
7043 Vinhibit_quit
= oquit
;
7044 return menu_bar_items_vector
;
7047 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
7048 If there's already an item for KEY, add this DEF to it. */
7050 Lisp_Object item_properties
;
7053 menu_bar_item (key
, item
, dummy1
, dummy2
)
7054 Lisp_Object key
, item
, dummy1
;
7057 struct gcpro gcpro1
;
7061 if (EQ (item
, Qundefined
))
7063 /* If a map has an explicit `undefined' as definition,
7064 discard any previously made menu bar item. */
7066 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7067 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7069 if (menu_bar_items_index
> i
+ 4)
7070 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7071 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7072 (menu_bar_items_index
- i
- 4) * sizeof (Lisp_Object
));
7073 menu_bar_items_index
-= 4;
7077 /* If this keymap has already contributed to this KEY,
7078 don't contribute to it a second time. */
7079 tem
= Fmemq (key
, menu_bar_one_keymap_changed_items
);
7080 if (!NILP (tem
) || NILP (item
))
7083 menu_bar_one_keymap_changed_items
7084 = Fcons (key
, menu_bar_one_keymap_changed_items
);
7086 /* We add to menu_bar_one_keymap_changed_items before doing the
7087 parse_menu_item, so that if it turns out it wasn't a menu item,
7088 it still correctly hides any further menu item. */
7090 i
= parse_menu_item (item
, 0, 1);
7095 item
= XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_DEF
];
7097 /* Find any existing item for this KEY. */
7098 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7099 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7102 /* If we did not find this KEY, add it at the end. */
7103 if (i
== menu_bar_items_index
)
7105 /* If vector is too small, get a bigger one. */
7106 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7109 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7110 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7111 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7112 menu_bar_items_vector
= tem
;
7115 /* Add this item. */
7116 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
7117 XVECTOR (menu_bar_items_vector
)->contents
[i
++]
7118 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
7119 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (item
, Qnil
);
7120 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = make_number (0);
7121 menu_bar_items_index
= i
;
7123 /* We did find an item for this KEY. Add ITEM to its list of maps. */
7127 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7128 /* If the new and the old items are not both keymaps,
7129 the lookup will only find `item'. */
7130 item
= Fcons (item
, KEYMAPP (item
) && KEYMAPP (XCAR (old
)) ? old
: Qnil
);
7131 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = item
;
7135 /* This is used as the handler when calling menu_item_eval_property. */
7137 menu_item_eval_property_1 (arg
)
7140 /* If we got a quit from within the menu computation,
7141 quit all the way out of it. This takes care of C-] in the debugger. */
7142 if (CONSP (arg
) && EQ (XCAR (arg
), Qquit
))
7143 Fsignal (Qquit
, Qnil
);
7148 /* Evaluate an expression and return the result (or nil if something
7149 went wrong). Used to evaluate dynamic parts of menu items. */
7151 menu_item_eval_property (sexpr
)
7154 int count
= SPECPDL_INDEX ();
7156 specbind (Qinhibit_redisplay
, Qt
);
7157 val
= internal_condition_case_1 (Feval
, sexpr
, Qerror
,
7158 menu_item_eval_property_1
);
7159 return unbind_to (count
, val
);
7162 /* This function parses a menu item and leaves the result in the
7163 vector item_properties.
7164 ITEM is a key binding, a possible menu item.
7165 If NOTREAL is nonzero, only check for equivalent key bindings, don't
7166 evaluate dynamic expressions in the menu item.
7167 INMENUBAR is > 0 when this is considered for an entry in a menu bar
7169 INMENUBAR is < 0 when this is considered for an entry in a keyboard menu.
7170 parse_menu_item returns true if the item is a menu item and false
7174 parse_menu_item (item
, notreal
, inmenubar
)
7176 int notreal
, inmenubar
;
7178 Lisp_Object def
, tem
, item_string
, start
;
7179 Lisp_Object cachelist
;
7181 Lisp_Object keyhint
;
7192 /* Create item_properties vector if necessary. */
7193 if (NILP (item_properties
))
7195 = Fmake_vector (make_number (ITEM_PROPERTY_ENABLE
+ 1), Qnil
);
7197 /* Initialize optional entries. */
7198 for (i
= ITEM_PROPERTY_DEF
; i
< ITEM_PROPERTY_ENABLE
; i
++)
7199 AREF (item_properties
, i
) = Qnil
;
7200 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = Qt
;
7202 /* Save the item here to protect it from GC. */
7203 AREF (item_properties
, ITEM_PROPERTY_ITEM
) = item
;
7205 item_string
= XCAR (item
);
7209 if (STRINGP (item_string
))
7211 /* Old format menu item. */
7212 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7214 /* Maybe help string. */
7215 if (CONSP (item
) && STRINGP (XCAR (item
)))
7217 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7222 /* Maybe key binding cache. */
7223 if (CONSP (item
) && CONSP (XCAR (item
))
7224 && (NILP (XCAR (XCAR (item
)))
7225 || VECTORP (XCAR (XCAR (item
)))))
7227 cachelist
= XCAR (item
);
7231 /* This is the real definition--the function to run. */
7232 AREF (item_properties
, ITEM_PROPERTY_DEF
) = item
;
7234 /* Get enable property, if any. */
7237 tem
= Fget (item
, Qmenu_enable
);
7239 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7242 else if (EQ (item_string
, Qmenu_item
) && CONSP (item
))
7244 /* New format menu item. */
7245 AREF (item_properties
, ITEM_PROPERTY_NAME
) = XCAR (item
);
7246 start
= XCDR (item
);
7249 /* We have a real binding. */
7250 AREF (item_properties
, ITEM_PROPERTY_DEF
) = XCAR (start
);
7252 item
= XCDR (start
);
7253 /* Is there a cache list with key equivalences. */
7254 if (CONSP (item
) && CONSP (XCAR (item
)))
7256 cachelist
= XCAR (item
);
7260 /* Parse properties. */
7261 while (CONSP (item
) && CONSP (XCDR (item
)))
7266 if (EQ (tem
, QCenable
))
7267 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = XCAR (item
);
7268 else if (EQ (tem
, QCvisible
) && !notreal
)
7270 /* If got a visible property and that evaluates to nil
7271 then ignore this item. */
7272 tem
= menu_item_eval_property (XCAR (item
));
7276 else if (EQ (tem
, QChelp
))
7277 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7278 else if (EQ (tem
, QCfilter
))
7280 else if (EQ (tem
, QCkey_sequence
))
7283 if (NILP (cachelist
)
7284 && (SYMBOLP (tem
) || STRINGP (tem
) || VECTORP (tem
)))
7285 /* Be GC protected. Set keyhint to item instead of tem. */
7288 else if (EQ (tem
, QCkeys
))
7291 if (CONSP (tem
) || (STRINGP (tem
) && NILP (cachelist
)))
7292 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7294 else if (EQ (tem
, QCbutton
) && CONSP (XCAR (item
)))
7299 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7301 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7303 AREF (item_properties
, ITEM_PROPERTY_TYPE
)
7310 else if (inmenubar
|| !NILP (start
))
7314 return 0; /* not a menu item */
7316 /* If item string is not a string, evaluate it to get string.
7317 If we don't get a string, skip this item. */
7318 item_string
= AREF (item_properties
, ITEM_PROPERTY_NAME
);
7319 if (!(STRINGP (item_string
) || notreal
))
7321 item_string
= menu_item_eval_property (item_string
);
7322 if (!STRINGP (item_string
))
7324 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7327 /* If got a filter apply it on definition. */
7328 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7331 def
= menu_item_eval_property (list2 (XCAR (filter
),
7332 list2 (Qquote
, def
)));
7334 AREF (item_properties
, ITEM_PROPERTY_DEF
) = def
;
7337 /* Enable or disable selection of item. */
7338 tem
= AREF (item_properties
, ITEM_PROPERTY_ENABLE
);
7344 tem
= menu_item_eval_property (tem
);
7345 if (inmenubar
&& NILP (tem
))
7346 return 0; /* Ignore disabled items in menu bar. */
7347 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7350 /* If we got no definition, this item is just unselectable text which
7351 is OK in a submenu but not in the menubar. */
7353 return (inmenubar
? 0 : 1);
7355 /* See if this is a separate pane or a submenu. */
7356 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7357 tem
= get_keymap (def
, 0, 1);
7358 /* For a subkeymap, just record its details and exit. */
7361 AREF (item_properties
, ITEM_PROPERTY_MAP
) = tem
;
7362 AREF (item_properties
, ITEM_PROPERTY_DEF
) = tem
;
7366 /* At the top level in the menu bar, do likewise for commands also.
7367 The menu bar does not display equivalent key bindings anyway.
7368 ITEM_PROPERTY_DEF is already set up properly. */
7372 /* This is a command. See if there is an equivalent key binding. */
7373 if (NILP (cachelist
))
7375 /* We have to create a cachelist. */
7376 CHECK_IMPURE (start
);
7377 XSETCDR (start
, Fcons (Fcons (Qnil
, Qnil
), XCDR (start
)));
7378 cachelist
= XCAR (XCDR (start
));
7380 tem
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7381 if (!NILP (keyhint
))
7383 XSETCAR (cachelist
, XCAR (keyhint
));
7386 else if (STRINGP (tem
))
7388 XSETCDR (cachelist
, Fsubstitute_command_keys (tem
));
7389 XSETCAR (cachelist
, Qt
);
7393 tem
= XCAR (cachelist
);
7400 tem
= Fkey_binding (tem
, Qnil
, Qnil
);
7402 prefix
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7405 def
= XCAR (prefix
);
7406 prefix
= XCDR (prefix
);
7409 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7411 if (NILP (XCAR (cachelist
))) /* Have no saved key. */
7413 if (newcache
/* Always check first time. */
7414 /* Should we check everything when precomputing key
7416 /* If something had no key binding before, don't recheck it
7417 because that is too slow--except if we have a list of
7418 rebound commands in Vdefine_key_rebound_commands, do
7419 recheck any command that appears in that list. */
7420 || (CONSP (Vdefine_key_rebound_commands
)
7421 && !NILP (Fmemq (def
, Vdefine_key_rebound_commands
))))
7424 /* We had a saved key. Is it still bound to the command? */
7427 /* If the command is an alias for another
7428 (such as lmenu.el set it up), check if the
7429 original command matches the cached command. */
7430 && !(SYMBOLP (def
) && EQ (tem
, XSYMBOL (def
)->function
))))
7431 chkcache
= 1; /* Need to recompute key binding. */
7435 /* Recompute equivalent key binding. If the command is an alias
7436 for another (such as lmenu.el set it up), see if the original
7437 command name has equivalent keys. Otherwise look up the
7438 specified command itself. We don't try both, because that
7439 makes lmenu menus slow. */
7441 && SYMBOLP (XSYMBOL (def
)->function
)
7442 && ! NILP (Fget (def
, Qmenu_alias
)))
7443 def
= XSYMBOL (def
)->function
;
7444 tem
= Fwhere_is_internal (def
, Qnil
, Qt
, Qnil
, Qt
);
7445 XSETCAR (cachelist
, tem
);
7448 XSETCDR (cachelist
, Qnil
);
7452 else if (!NILP (keyhint
) && !NILP (XCAR (cachelist
)))
7454 tem
= XCAR (cachelist
);
7458 newcache
= chkcache
;
7461 tem
= Fkey_description (tem
, Qnil
);
7464 if (STRINGP (XCAR (prefix
)))
7465 tem
= concat2 (XCAR (prefix
), tem
);
7466 if (STRINGP (XCDR (prefix
)))
7467 tem
= concat2 (tem
, XCDR (prefix
));
7469 XSETCDR (cachelist
, tem
);
7473 tem
= XCDR (cachelist
);
7474 if (newcache
&& !NILP (tem
))
7476 tem
= concat3 (build_string (" ("), tem
, build_string (")"));
7477 XSETCDR (cachelist
, tem
);
7480 /* If we only want to precompute equivalent key bindings, stop here. */
7484 /* If we have an equivalent key binding, use that. */
7485 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7487 /* Include this when menu help is implemented.
7488 tem = XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP];
7489 if (!(NILP (tem) || STRINGP (tem)))
7491 tem = menu_item_eval_property (tem);
7494 XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP] = tem;
7498 /* Handle radio buttons or toggle boxes. */
7499 tem
= AREF (item_properties
, ITEM_PROPERTY_SELECTED
);
7501 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7502 = menu_item_eval_property (tem
);
7509 /***********************************************************************
7511 ***********************************************************************/
7513 /* A vector holding tool bar items while they are parsed in function
7514 tool_bar_items. Each item occupies TOOL_BAR_ITEM_NSCLOTS elements
7517 static Lisp_Object tool_bar_items_vector
;
7519 /* A vector holding the result of parse_tool_bar_item. Layout is like
7520 the one for a single item in tool_bar_items_vector. */
7522 static Lisp_Object tool_bar_item_properties
;
7524 /* Next free index in tool_bar_items_vector. */
7526 static int ntool_bar_items
;
7528 /* The symbols `tool-bar', and `:image'. */
7530 extern Lisp_Object Qtool_bar
;
7531 Lisp_Object QCimage
;
7533 /* Function prototypes. */
7535 static void init_tool_bar_items
P_ ((Lisp_Object
));
7536 static void process_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7537 static int parse_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7538 static void append_tool_bar_item
P_ ((void));
7541 /* Return a vector of tool bar items for keymaps currently in effect.
7542 Reuse vector REUSE if non-nil. Return in *NITEMS the number of
7543 tool bar items found. */
7546 tool_bar_items (reuse
, nitems
)
7557 /* In order to build the menus, we need to call the keymap
7558 accessors. They all call QUIT. But this function is called
7559 during redisplay, during which a quit is fatal. So inhibit
7560 quitting while building the menus. We do this instead of
7561 specbind because (1) errors will clear it anyway and (2) this
7562 avoids risk of specpdl overflow. */
7563 oquit
= Vinhibit_quit
;
7566 /* Initialize tool_bar_items_vector and protect it from GC. */
7567 init_tool_bar_items (reuse
);
7569 /* Build list of keymaps in maps. Set nmaps to the number of maps
7572 /* Should overriding-terminal-local-map and overriding-local-map apply? */
7573 if (!NILP (Voverriding_local_map_menu_flag
))
7575 /* Yes, use them (if non-nil) as well as the global map. */
7576 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
7578 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
7579 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
7580 if (!NILP (Voverriding_local_map
))
7581 maps
[nmaps
++] = Voverriding_local_map
;
7585 /* No, so use major and minor mode keymaps and keymap property.
7586 Note that tool-bar bindings in the local-map and keymap
7587 properties may not work reliable, as they are only
7588 recognized when the tool-bar (or mode-line) is updated,
7589 which does not normally happen after every command. */
7592 nminor
= current_minor_maps (NULL
, &tmaps
);
7593 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
7595 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
7596 maps
[nmaps
++] = tem
;
7597 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
7599 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
7602 /* Add global keymap at the end. */
7603 maps
[nmaps
++] = current_global_map
;
7605 /* Process maps in reverse order and look up in each map the prefix
7607 for (i
= nmaps
- 1; i
>= 0; --i
)
7608 if (!NILP (maps
[i
]))
7612 keymap
= get_keymap (access_keymap (maps
[i
], Qtool_bar
, 1, 0, 1), 0, 1);
7617 /* KEYMAP is a list `(keymap (KEY . BINDING) ...)'. */
7618 for (tail
= keymap
; CONSP (tail
); tail
= XCDR (tail
))
7620 Lisp_Object keydef
= XCAR (tail
);
7622 process_tool_bar_item (XCAR (keydef
), XCDR (keydef
));
7627 Vinhibit_quit
= oquit
;
7628 *nitems
= ntool_bar_items
/ TOOL_BAR_ITEM_NSLOTS
;
7629 return tool_bar_items_vector
;
7633 /* Process the definition of KEY which is DEF. */
7636 process_tool_bar_item (key
, def
)
7637 Lisp_Object key
, def
;
7640 extern Lisp_Object Qundefined
;
7641 struct gcpro gcpro1
, gcpro2
;
7643 /* Protect KEY and DEF from GC because parse_tool_bar_item may call
7647 if (EQ (def
, Qundefined
))
7649 /* If a map has an explicit `undefined' as definition,
7650 discard any previously made item. */
7651 for (i
= 0; i
< ntool_bar_items
; i
+= TOOL_BAR_ITEM_NSLOTS
)
7653 Lisp_Object
*v
= XVECTOR (tool_bar_items_vector
)->contents
+ i
;
7655 if (EQ (key
, v
[TOOL_BAR_ITEM_KEY
]))
7657 if (ntool_bar_items
> i
+ TOOL_BAR_ITEM_NSLOTS
)
7658 bcopy (v
+ TOOL_BAR_ITEM_NSLOTS
, v
,
7659 ((ntool_bar_items
- i
- TOOL_BAR_ITEM_NSLOTS
)
7660 * sizeof (Lisp_Object
)));
7661 ntool_bar_items
-= TOOL_BAR_ITEM_NSLOTS
;
7666 else if (parse_tool_bar_item (key
, def
))
7667 /* Append a new tool bar item to tool_bar_items_vector. Accept
7668 more than one definition for the same key. */
7669 append_tool_bar_item ();
7675 /* Parse a tool bar item specification ITEM for key KEY and return the
7676 result in tool_bar_item_properties. Value is zero if ITEM is
7679 ITEM is a list `(menu-item CAPTION BINDING PROPS...)'.
7681 CAPTION is the caption of the item, If it's not a string, it is
7682 evaluated to get a string.
7684 BINDING is the tool bar item's binding. Tool-bar items with keymaps
7685 as binding are currently ignored.
7687 The following properties are recognized:
7691 FORM is evaluated and specifies whether the tool bar item is
7692 enabled or disabled.
7696 FORM is evaluated and specifies whether the tool bar item is visible.
7698 - `:filter FUNCTION'
7700 FUNCTION is invoked with one parameter `(quote BINDING)'. Its
7701 result is stored as the new binding.
7703 - `:button (TYPE SELECTED)'
7705 TYPE must be one of `:radio' or `:toggle'. SELECTED is evaluated
7706 and specifies whether the button is selected (pressed) or not.
7710 IMAGES is either a single image specification or a vector of four
7711 image specifications. See enum tool_bar_item_images.
7713 - `:help HELP-STRING'.
7715 Gives a help string to display for the tool bar item. */
7718 parse_tool_bar_item (key
, item
)
7719 Lisp_Object key
, item
;
7721 /* Access slot with index IDX of vector tool_bar_item_properties. */
7722 #define PROP(IDX) XVECTOR (tool_bar_item_properties)->contents[IDX]
7724 Lisp_Object filter
= Qnil
;
7725 Lisp_Object caption
;
7728 /* Defininition looks like `(menu-item CAPTION BINDING PROPS...)'.
7729 Rule out items that aren't lists, don't start with
7730 `menu-item' or whose rest following `tool-bar-item' is not a
7733 || !EQ (XCAR (item
), Qmenu_item
)
7734 || (item
= XCDR (item
),
7738 /* Create tool_bar_item_properties vector if necessary. Reset it to
7740 if (VECTORP (tool_bar_item_properties
))
7742 for (i
= 0; i
< TOOL_BAR_ITEM_NSLOTS
; ++i
)
7746 tool_bar_item_properties
7747 = Fmake_vector (make_number (TOOL_BAR_ITEM_NSLOTS
), Qnil
);
7750 PROP (TOOL_BAR_ITEM_KEY
) = key
;
7751 PROP (TOOL_BAR_ITEM_ENABLED_P
) = Qt
;
7753 /* Get the caption of the item. If the caption is not a string,
7754 evaluate it to get a string. If we don't get a string, skip this
7756 caption
= XCAR (item
);
7757 if (!STRINGP (caption
))
7759 caption
= menu_item_eval_property (caption
);
7760 if (!STRINGP (caption
))
7763 PROP (TOOL_BAR_ITEM_CAPTION
) = caption
;
7765 /* Give up if rest following the caption is not a list. */
7770 /* Store the binding. */
7771 PROP (TOOL_BAR_ITEM_BINDING
) = XCAR (item
);
7774 /* Ignore cached key binding, if any. */
7775 if (CONSP (item
) && CONSP (XCAR (item
)))
7778 /* Process the rest of the properties. */
7779 for (; CONSP (item
) && CONSP (XCDR (item
)); item
= XCDR (XCDR (item
)))
7781 Lisp_Object key
, value
;
7784 value
= XCAR (XCDR (item
));
7786 if (EQ (key
, QCenable
))
7787 /* `:enable FORM'. */
7788 PROP (TOOL_BAR_ITEM_ENABLED_P
) = value
;
7789 else if (EQ (key
, QCvisible
))
7791 /* `:visible FORM'. If got a visible property and that
7792 evaluates to nil then ignore this item. */
7793 if (NILP (menu_item_eval_property (value
)))
7796 else if (EQ (key
, QChelp
))
7797 /* `:help HELP-STRING'. */
7798 PROP (TOOL_BAR_ITEM_HELP
) = value
;
7799 else if (EQ (key
, QCfilter
))
7800 /* ':filter FORM'. */
7802 else if (EQ (key
, QCbutton
) && CONSP (value
))
7804 /* `:button (TYPE . SELECTED)'. */
7805 Lisp_Object type
, selected
;
7807 type
= XCAR (value
);
7808 selected
= XCDR (value
);
7809 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7811 PROP (TOOL_BAR_ITEM_SELECTED_P
) = selected
;
7812 PROP (TOOL_BAR_ITEM_TYPE
) = type
;
7815 else if (EQ (key
, QCimage
)
7817 || (VECTORP (value
) && XVECTOR (value
)->size
== 4)))
7818 /* Value is either a single image specification or a vector
7819 of 4 such specifications for the different button states. */
7820 PROP (TOOL_BAR_ITEM_IMAGES
) = value
;
7823 /* If got a filter apply it on binding. */
7825 PROP (TOOL_BAR_ITEM_BINDING
)
7826 = menu_item_eval_property (list2 (filter
,
7828 PROP (TOOL_BAR_ITEM_BINDING
))));
7830 /* See if the binding is a keymap. Give up if it is. */
7831 if (CONSP (get_keymap (PROP (TOOL_BAR_ITEM_BINDING
), 0, 1)))
7834 /* Enable or disable selection of item. */
7835 if (!EQ (PROP (TOOL_BAR_ITEM_ENABLED_P
), Qt
))
7836 PROP (TOOL_BAR_ITEM_ENABLED_P
)
7837 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_ENABLED_P
));
7839 /* Handle radio buttons or toggle boxes. */
7840 if (!NILP (PROP (TOOL_BAR_ITEM_SELECTED_P
)))
7841 PROP (TOOL_BAR_ITEM_SELECTED_P
)
7842 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_SELECTED_P
));
7850 /* Initialize tool_bar_items_vector. REUSE, if non-nil, is a vector
7851 that can be reused. */
7854 init_tool_bar_items (reuse
)
7857 if (VECTORP (reuse
))
7858 tool_bar_items_vector
= reuse
;
7860 tool_bar_items_vector
= Fmake_vector (make_number (64), Qnil
);
7861 ntool_bar_items
= 0;
7865 /* Append parsed tool bar item properties from
7866 tool_bar_item_properties */
7869 append_tool_bar_item ()
7871 Lisp_Object
*to
, *from
;
7873 /* Enlarge tool_bar_items_vector if necessary. */
7874 if (ntool_bar_items
+ TOOL_BAR_ITEM_NSLOTS
7875 >= XVECTOR (tool_bar_items_vector
)->size
)
7877 Lisp_Object new_vector
;
7878 int old_size
= XVECTOR (tool_bar_items_vector
)->size
;
7880 new_vector
= Fmake_vector (make_number (2 * old_size
), Qnil
);
7881 bcopy (XVECTOR (tool_bar_items_vector
)->contents
,
7882 XVECTOR (new_vector
)->contents
,
7883 old_size
* sizeof (Lisp_Object
));
7884 tool_bar_items_vector
= new_vector
;
7887 /* Append entries from tool_bar_item_properties to the end of
7888 tool_bar_items_vector. */
7889 to
= XVECTOR (tool_bar_items_vector
)->contents
+ ntool_bar_items
;
7890 from
= XVECTOR (tool_bar_item_properties
)->contents
;
7891 bcopy (from
, to
, TOOL_BAR_ITEM_NSLOTS
* sizeof *to
);
7892 ntool_bar_items
+= TOOL_BAR_ITEM_NSLOTS
;
7899 /* Read a character using menus based on maps in the array MAPS.
7900 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
7901 Return t if we displayed a menu but the user rejected it.
7903 PREV_EVENT is the previous input event, or nil if we are reading
7904 the first event of a key sequence.
7906 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
7907 if we used a mouse menu to read the input, or zero otherwise. If
7908 USED_MOUSE_MENU is null, we don't dereference it.
7910 The prompting is done based on the prompt-string of the map
7911 and the strings associated with various map elements.
7913 This can be done with X menus or with menus put in the minibuf.
7914 These are done in different ways, depending on how the input will be read.
7915 Menus using X are done after auto-saving in read-char, getting the input
7916 event from Fx_popup_menu; menus using the minibuf use read_char recursively
7917 and do auto-saving in the inner call of read_char. */
7920 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
7923 Lisp_Object prev_event
;
7924 int *used_mouse_menu
;
7927 register Lisp_Object name
= Qnil
;
7929 if (used_mouse_menu
)
7930 *used_mouse_menu
= 0;
7932 /* Use local over global Menu maps */
7934 if (! menu_prompting
)
7937 /* Optionally disregard all but the global map. */
7938 if (inhibit_local_menu_bar_menus
)
7940 maps
+= (nmaps
- 1);
7944 /* Get the menu name from the first map that has one (a prompt string). */
7945 for (mapno
= 0; mapno
< nmaps
; mapno
++)
7947 name
= Fkeymap_prompt (maps
[mapno
]);
7952 /* If we don't have any menus, just read a character normally. */
7953 if (!STRINGP (name
))
7957 /* If we got to this point via a mouse click,
7958 use a real menu for mouse selection. */
7959 if (EVENT_HAS_PARAMETERS (prev_event
)
7960 && !EQ (XCAR (prev_event
), Qmenu_bar
)
7961 && !EQ (XCAR (prev_event
), Qtool_bar
))
7963 /* Display the menu and get the selection. */
7964 Lisp_Object
*realmaps
7965 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
7969 /* Use the maps that are not nil. */
7970 for (mapno
= 0; mapno
< nmaps
; mapno
++)
7971 if (!NILP (maps
[mapno
]))
7972 realmaps
[nmaps1
++] = maps
[mapno
];
7974 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
7979 record_menu_key (XCAR (value
));
7981 /* If we got multiple events, unread all but
7983 There is no way to prevent those unread events
7984 from showing up later in last_nonmenu_event.
7985 So turn symbol and integer events into lists,
7986 to indicate that they came from a mouse menu,
7987 so that when present in last_nonmenu_event
7988 they won't confuse things. */
7989 for (tem
= XCDR (value
); !NILP (tem
); tem
= XCDR (tem
))
7991 record_menu_key (XCAR (tem
));
7992 if (SYMBOLP (XCAR (tem
))
7993 || INTEGERP (XCAR (tem
)))
7994 XSETCAR (tem
, Fcons (XCAR (tem
), Qdisabled
));
7997 /* If we got more than one event, put all but the first
7998 onto this list to be read later.
7999 Return just the first event now. */
8000 Vunread_command_events
8001 = nconc2 (XCDR (value
), Vunread_command_events
);
8002 value
= XCAR (value
);
8004 else if (NILP (value
))
8006 if (used_mouse_menu
)
8007 *used_mouse_menu
= 1;
8010 #endif /* HAVE_MENUS */
8014 /* Buffer in use so far for the minibuf prompts for menu keymaps.
8015 We make this bigger when necessary, and never free it. */
8016 static char *read_char_minibuf_menu_text
;
8017 /* Size of that buffer. */
8018 static int read_char_minibuf_menu_width
;
8021 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
8027 register Lisp_Object name
;
8029 /* FIXME: Use the minibuffer's frame width. */
8030 int width
= FRAME_COLS (SELECTED_FRAME ()) - 4;
8033 Lisp_Object rest
, vector
;
8039 if (! menu_prompting
)
8042 /* Make sure we have a big enough buffer for the menu text. */
8043 if (read_char_minibuf_menu_text
== 0)
8045 read_char_minibuf_menu_width
= width
+ 4;
8046 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
8048 else if (width
+ 4 > read_char_minibuf_menu_width
)
8050 read_char_minibuf_menu_width
= width
+ 4;
8051 read_char_minibuf_menu_text
8052 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
8054 menu
= read_char_minibuf_menu_text
;
8056 /* Get the menu name from the first map that has one (a prompt string). */
8057 for (mapno
= 0; mapno
< nmaps
; mapno
++)
8059 name
= Fkeymap_prompt (maps
[mapno
]);
8064 /* If we don't have any menus, just read a character normally. */
8065 if (!STRINGP (name
))
8068 /* Prompt string always starts with map's prompt, and a space. */
8069 strcpy (menu
, SDATA (name
));
8070 nlength
= SBYTES (name
);
8071 menu
[nlength
++] = ':';
8072 menu
[nlength
++] = ' ';
8075 /* Start prompting at start of first map. */
8079 /* Present the documented bindings, a line at a time. */
8086 Lisp_Object orig_defn_macro
;
8088 /* Loop over elements of map. */
8093 /* If reached end of map, start at beginning of next map. */
8097 /* At end of last map, wrap around to first map if just starting,
8098 or end this line if already have something on it. */
8102 if (notfirst
|| nobindings
) break;
8107 /* Look at the next element of the map. */
8109 elt
= XVECTOR (vector
)->contents
[idx
];
8111 elt
= Fcar_safe (rest
);
8113 if (idx
< 0 && VECTORP (elt
))
8115 /* If we found a dense table in the keymap,
8116 advanced past it, but start scanning its contents. */
8117 rest
= Fcdr_safe (rest
);
8123 /* An ordinary element. */
8124 Lisp_Object event
, tem
;
8128 event
= Fcar_safe (elt
); /* alist */
8129 elt
= Fcdr_safe (elt
);
8133 XSETINT (event
, idx
); /* vector */
8136 /* Ignore the element if it has no prompt string. */
8137 if (INTEGERP (event
) && parse_menu_item (elt
, 0, -1))
8139 /* 1 if the char to type matches the string. */
8141 Lisp_Object upcased_event
, downcased_event
;
8142 Lisp_Object desc
= Qnil
;
8144 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
8146 upcased_event
= Fupcase (event
);
8147 downcased_event
= Fdowncase (event
);
8148 char_matches
= (XINT (upcased_event
) == SREF (s
, 0)
8149 || XINT (downcased_event
) == SREF (s
, 0));
8151 desc
= Fsingle_key_description (event
, Qnil
);
8153 #if 0 /* It is redundant to list the equivalent key bindings because
8154 the prefix is what the user has already typed. */
8156 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_KEYEQ
];
8158 /* Insert equivalent keybinding. */
8159 s
= concat2 (s
, tem
);
8162 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_TYPE
];
8163 if (EQ (tem
, QCradio
) || EQ (tem
, QCtoggle
))
8165 /* Insert button prefix. */
8166 Lisp_Object selected
8167 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_SELECTED
];
8168 if (EQ (tem
, QCradio
))
8169 tem
= build_string (NILP (selected
) ? "(*) " : "( ) ");
8171 tem
= build_string (NILP (selected
) ? "[X] " : "[ ] ");
8172 s
= concat2 (tem
, s
);
8176 /* If we have room for the prompt string, add it to this line.
8177 If this is the first on the line, always add it. */
8178 if ((SCHARS (s
) + i
+ 2
8179 + (char_matches
? 0 : SCHARS (desc
) + 3))
8185 /* Punctuate between strings. */
8188 strcpy (menu
+ i
, ", ");
8194 /* If the char to type doesn't match the string's
8195 first char, explicitly show what char to type. */
8198 /* Add as much of string as fits. */
8199 thiswidth
= SCHARS (desc
);
8200 if (thiswidth
+ i
> width
)
8201 thiswidth
= width
- i
;
8202 bcopy (SDATA (desc
), menu
+ i
, thiswidth
);
8204 strcpy (menu
+ i
, " = ");
8208 /* Add as much of string as fits. */
8209 thiswidth
= SCHARS (s
);
8210 if (thiswidth
+ i
> width
)
8211 thiswidth
= width
- i
;
8212 bcopy (SDATA (s
), menu
+ i
, thiswidth
);
8218 /* If this element does not fit, end the line now,
8219 and save the element for the next line. */
8220 strcpy (menu
+ i
, "...");
8225 /* Move past this element. */
8226 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
8227 /* Handle reaching end of dense table. */
8232 rest
= Fcdr_safe (rest
);
8236 /* Prompt with that and read response. */
8237 message2_nolog (menu
, strlen (menu
),
8238 ! NILP (current_buffer
->enable_multibyte_characters
));
8240 /* Make believe its not a keyboard macro in case the help char
8241 is pressed. Help characters are not recorded because menu prompting
8242 is not used on replay.
8244 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
8245 current_kboard
->defining_kbd_macro
= Qnil
;
8247 obj
= read_char (commandflag
, 0, 0, Qt
, 0);
8248 while (BUFFERP (obj
));
8249 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
8251 if (!INTEGERP (obj
))
8256 if (! EQ (obj
, menu_prompt_more_char
)
8257 && (!INTEGERP (menu_prompt_more_char
)
8258 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
8260 if (!NILP (current_kboard
->defining_kbd_macro
))
8261 store_kbd_macro_char (obj
);
8264 /* Help char - go round again */
8268 /* Reading key sequences. */
8270 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
8271 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
8272 keymap, or nil otherwise. Return the index of the first keymap in
8273 which KEY has any binding, or NMAPS if no map has a binding.
8275 If KEY is a meta ASCII character, treat it like meta-prefix-char
8276 followed by the corresponding non-meta character. Keymaps in
8277 CURRENT with non-prefix bindings for meta-prefix-char become nil in
8280 If KEY has no bindings in any of the CURRENT maps, NEXT is left
8283 NEXT may be the same array as CURRENT. */
8286 follow_key (key
, nmaps
, current
, defs
, next
)
8288 Lisp_Object
*current
, *defs
, *next
;
8291 int i
, first_binding
;
8293 first_binding
= nmaps
;
8294 for (i
= nmaps
- 1; i
>= 0; i
--)
8296 if (! NILP (current
[i
]))
8298 defs
[i
] = access_keymap (current
[i
], key
, 1, 0, 1);
8299 if (! NILP (defs
[i
]))
8306 /* Given the set of bindings we've found, produce the next set of maps. */
8307 if (first_binding
< nmaps
)
8308 for (i
= 0; i
< nmaps
; i
++)
8309 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap (defs
[i
], 0, 1);
8311 return first_binding
;
8314 /* Structure used to keep track of partial application of key remapping
8315 such as Vfunction_key_map and Vkey_translation_map. */
8316 typedef struct keyremap
8318 Lisp_Object map
, parent
;
8322 /* Lookup KEY in MAP.
8323 MAP is a keymap mapping keys to key vectors or functions.
8324 If the mapping is a function and DO_FUNCTION is non-zero, then
8325 the function is called with PROMPT as parameter and its return
8326 value is used as the return value of this function (after checking
8327 that it is indeed a vector). */
8330 access_keymap_keyremap (map
, key
, prompt
, do_funcall
)
8331 Lisp_Object map
, key
, prompt
;
8336 next
= access_keymap (map
, key
, 1, 0, 1);
8338 /* Handle symbol with autoload definition. */
8339 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8340 && CONSP (XSYMBOL (next
)->function
)
8341 && EQ (XCAR (XSYMBOL (next
)->function
), Qautoload
))
8342 do_autoload (XSYMBOL (next
)->function
, next
);
8344 /* Handle a symbol whose function definition is a keymap
8346 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8347 && (!NILP (Farrayp (XSYMBOL (next
)->function
))
8348 || KEYMAPP (XSYMBOL (next
)->function
)))
8349 next
= XSYMBOL (next
)->function
;
8351 /* If the keymap gives a function, not an
8352 array, then call the function with one arg and use
8353 its value instead. */
8354 if (SYMBOLP (next
) && !NILP (Ffboundp (next
)) && do_funcall
)
8359 next
= call1 (next
, prompt
);
8360 /* If the function returned something invalid,
8361 barf--don't ignore it.
8362 (To ignore it safely, we would need to gcpro a bunch of
8363 other variables.) */
8364 if (! (VECTORP (next
) || STRINGP (next
)))
8365 error ("Function %s returns invalid key sequence", tem
);
8370 /* Do one step of the key remapping used for function-key-map and
8371 key-translation-map:
8372 KEYBUF is the buffer holding the input events.
8373 BUFSIZE is its maximum size.
8374 FKEY is a pointer to the keyremap structure to use.
8375 INPUT is the index of the last element in KEYBUF.
8376 DOIT if non-zero says that the remapping can actually take place.
8377 DIFF is used to return the number of keys added/removed by the remapping.
8378 PARENT is the root of the keymap.
8379 PROMPT is the prompt to use if the remapping happens through a function.
8380 The return value is non-zero if the remapping actually took place. */
8383 keyremap_step (keybuf
, bufsize
, fkey
, input
, doit
, diff
, prompt
)
8384 Lisp_Object
*keybuf
, prompt
;
8386 int input
, doit
, *diff
, bufsize
;
8388 Lisp_Object next
, key
;
8390 key
= keybuf
[fkey
->end
++];
8391 next
= access_keymap_keyremap (fkey
->map
, key
, prompt
, doit
);
8393 /* If keybuf[fkey->start..fkey->end] is bound in the
8394 map and we're in a position to do the key remapping, replace it with
8395 the binding and restart with fkey->start at the end. */
8396 if ((VECTORP (next
) || STRINGP (next
)) && doit
)
8398 int len
= XFASTINT (Flength (next
));
8401 *diff
= len
- (fkey
->end
- fkey
->start
);
8403 if (input
+ *diff
>= bufsize
)
8404 error ("Key sequence too long");
8406 /* Shift the keys that follow fkey->end. */
8408 for (i
= fkey
->end
; i
< input
; i
++)
8409 keybuf
[i
+ *diff
] = keybuf
[i
];
8411 for (i
= input
- 1; i
>= fkey
->end
; i
--)
8412 keybuf
[i
+ *diff
] = keybuf
[i
];
8413 /* Overwrite the old keys with the new ones. */
8414 for (i
= 0; i
< len
; i
++)
8415 keybuf
[fkey
->start
+ i
]
8416 = Faref (next
, make_number (i
));
8418 fkey
->start
= fkey
->end
+= *diff
;
8419 fkey
->map
= fkey
->parent
;
8424 fkey
->map
= get_keymap (next
, 0, 1);
8426 /* If we no longer have a bound suffix, try a new position for
8428 if (!CONSP (fkey
->map
))
8430 fkey
->end
= ++fkey
->start
;
8431 fkey
->map
= fkey
->parent
;
8436 /* Read a sequence of keys that ends with a non prefix character,
8437 storing it in KEYBUF, a buffer of size BUFSIZE.
8439 Return the length of the key sequence stored.
8440 Return -1 if the user rejected a command menu.
8442 Echo starting immediately unless `prompt' is 0.
8444 Where a key sequence ends depends on the currently active keymaps.
8445 These include any minor mode keymaps active in the current buffer,
8446 the current buffer's local map, and the global map.
8448 If a key sequence has no other bindings, we check Vfunction_key_map
8449 to see if some trailing subsequence might be the beginning of a
8450 function key's sequence. If so, we try to read the whole function
8451 key, and substitute its symbolic name into the key sequence.
8453 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
8454 `double-' events into similar click events, if that would make them
8455 bound. We try to turn `triple-' events first into `double-' events,
8458 If we get a mouse click in a mode line, vertical divider, or other
8459 non-text area, we treat the click as if it were prefixed by the
8460 symbol denoting that area - `mode-line', `vertical-line', or
8463 If the sequence starts with a mouse click, we read the key sequence
8464 with respect to the buffer clicked on, not the current buffer.
8466 If the user switches frames in the midst of a key sequence, we put
8467 off the switch-frame event until later; the next call to
8468 read_char will return it.
8470 If FIX_CURRENT_BUFFER is nonzero, we restore current_buffer
8471 from the selected window's buffer. */
8474 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
8475 can_return_switch_frame
, fix_current_buffer
)
8476 Lisp_Object
*keybuf
;
8479 int dont_downcase_last
;
8480 int can_return_switch_frame
;
8481 int fix_current_buffer
;
8483 volatile Lisp_Object from_string
;
8484 volatile int count
= SPECPDL_INDEX ();
8486 /* How many keys there are in the current key sequence. */
8489 /* The length of the echo buffer when we started reading, and
8490 the length of this_command_keys when we started reading. */
8491 volatile int echo_start
;
8492 volatile int keys_start
;
8494 /* The number of keymaps we're scanning right now, and the number of
8495 keymaps we have allocated space for. */
8497 volatile int nmaps_allocated
= 0;
8499 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
8500 the current keymaps. */
8501 Lisp_Object
*volatile defs
= NULL
;
8503 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
8504 in the current keymaps, or nil where it is not a prefix. */
8505 Lisp_Object
*volatile submaps
= NULL
;
8507 /* The local map to start out with at start of key sequence. */
8508 volatile Lisp_Object orig_local_map
;
8510 /* The map from the `keymap' property to start out with at start of
8512 volatile Lisp_Object orig_keymap
;
8514 /* 1 if we have already considered switching to the local-map property
8515 of the place where a mouse click occurred. */
8516 volatile int localized_local_map
= 0;
8518 /* The index in defs[] of the first keymap that has a binding for
8519 this key sequence. In other words, the lowest i such that
8520 defs[i] is non-nil. */
8521 volatile int first_binding
;
8522 /* Index of the first key that has no binding.
8523 It is useless to try fkey.start larger than that. */
8524 volatile int first_unbound
;
8526 /* If t < mock_input, then KEYBUF[t] should be read as the next
8529 We use this to recover after recognizing a function key. Once we
8530 realize that a suffix of the current key sequence is actually a
8531 function key's escape sequence, we replace the suffix with the
8532 function key's binding from Vfunction_key_map. Now keybuf
8533 contains a new and different key sequence, so the echo area,
8534 this_command_keys, and the submaps and defs arrays are wrong. In
8535 this situation, we set mock_input to t, set t to 0, and jump to
8536 restart_sequence; the loop will read keys from keybuf up until
8537 mock_input, thus rebuilding the state; and then it will resume
8538 reading characters from the keyboard. */
8539 volatile int mock_input
= 0;
8541 /* If the sequence is unbound in submaps[], then
8542 keybuf[fkey.start..fkey.end-1] is a prefix in Vfunction_key_map,
8543 and fkey.map is its binding.
8545 These might be > t, indicating that all function key scanning
8546 should hold off until t reaches them. We do this when we've just
8547 recognized a function key, to avoid searching for the function
8548 key's again in Vfunction_key_map. */
8549 volatile keyremap fkey
;
8551 /* Likewise, for key_translation_map. */
8552 volatile keyremap keytran
;
8554 /* If we receive a `switch-frame' or `select-window' event in the middle of
8555 a key sequence, we put it off for later.
8556 While we're reading, we keep the event here. */
8557 volatile Lisp_Object delayed_switch_frame
;
8559 /* See the comment below... */
8560 #if defined (GOBBLE_FIRST_EVENT)
8561 Lisp_Object first_event
;
8564 volatile Lisp_Object original_uppercase
;
8565 volatile int original_uppercase_position
= -1;
8567 /* Gets around Microsoft compiler limitations. */
8570 struct buffer
*starting_buffer
;
8572 /* List of events for which a fake prefix key has been generated. */
8573 volatile Lisp_Object fake_prefixed_keys
= Qnil
;
8575 #if defined (GOBBLE_FIRST_EVENT)
8579 struct gcpro gcpro1
;
8581 GCPRO1 (fake_prefixed_keys
);
8582 raw_keybuf_count
= 0;
8584 last_nonmenu_event
= Qnil
;
8586 delayed_switch_frame
= Qnil
;
8587 fkey
.map
= fkey
.parent
= Vfunction_key_map
;
8588 keytran
.map
= keytran
.parent
= Vkey_translation_map
;
8589 /* If there is no translation-map, turn off scanning. */
8590 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
8591 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
8596 echo_prompt (prompt
);
8597 else if (cursor_in_echo_area
8598 && (FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8599 && NILP (Fzerop (Vecho_keystrokes
)))
8600 /* This doesn't put in a dash if the echo buffer is empty, so
8601 you don't always see a dash hanging out in the minibuffer. */
8605 /* Record the initial state of the echo area and this_command_keys;
8606 we will need to restore them if we replay a key sequence. */
8608 echo_start
= echo_length ();
8609 keys_start
= this_command_key_count
;
8610 this_single_command_key_start
= keys_start
;
8612 #if defined (GOBBLE_FIRST_EVENT)
8613 /* This doesn't quite work, because some of the things that read_char
8614 does cannot safely be bypassed. It seems too risky to try to make
8617 /* Read the first char of the sequence specially, before setting
8618 up any keymaps, in case a filter runs and switches buffers on us. */
8619 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
8621 #endif /* GOBBLE_FIRST_EVENT */
8623 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8624 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8627 /* We jump here when the key sequence has been thoroughly changed, and
8628 we need to rescan it starting from the beginning. When we jump here,
8629 keybuf[0..mock_input] holds the sequence we should reread. */
8632 starting_buffer
= current_buffer
;
8633 first_unbound
= bufsize
+ 1;
8635 /* Build our list of keymaps.
8636 If we recognize a function key and replace its escape sequence in
8637 keybuf with its symbol, or if the sequence starts with a mouse
8638 click and we need to switch buffers, we jump back here to rebuild
8639 the initial keymaps from the current buffer. */
8642 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
8643 || !NILP (Voverriding_local_map
))
8645 if (3 > nmaps_allocated
)
8647 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
8648 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
8649 nmaps_allocated
= 3;
8651 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
8652 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
8653 if (!NILP (Voverriding_local_map
))
8654 submaps
[nmaps
++] = Voverriding_local_map
;
8662 nminor
= current_minor_maps (0, &maps
);
8663 total
= nminor
+ (!NILP (orig_keymap
) ? 3 : 2);
8665 if (total
> nmaps_allocated
)
8667 submaps
= (Lisp_Object
*) alloca (total
* sizeof (submaps
[0]));
8668 defs
= (Lisp_Object
*) alloca (total
* sizeof (defs
[0]));
8669 nmaps_allocated
= total
;
8672 if (!NILP (orig_keymap
))
8673 submaps
[nmaps
++] = orig_keymap
;
8675 bcopy (maps
, (void *) (submaps
+ nmaps
),
8676 nminor
* sizeof (submaps
[0]));
8680 submaps
[nmaps
++] = orig_local_map
;
8682 submaps
[nmaps
++] = current_global_map
;
8684 /* Find an accurate initial value for first_binding. */
8685 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
8686 if (! NILP (submaps
[first_binding
]))
8689 /* Start from the beginning in keybuf. */
8692 /* These are no-ops the first time through, but if we restart, they
8693 revert the echo area and this_command_keys to their original state. */
8694 this_command_key_count
= keys_start
;
8695 if (INTERACTIVE
&& t
< mock_input
)
8696 echo_truncate (echo_start
);
8698 /* If the best binding for the current key sequence is a keymap, or
8699 we may be looking at a function key's escape sequence, keep on
8701 while (first_binding
< nmaps
8702 /* Keep reading as long as there's a prefix binding. */
8703 ? !NILP (submaps
[first_binding
])
8704 /* Don't return in the middle of a possible function key sequence,
8705 if the only bindings we found were via case conversion.
8706 Thus, if ESC O a has a function-key-map translation
8707 and ESC o has a binding, don't return after ESC O,
8708 so that we can translate ESC O plus the next character. */
8709 : (fkey
.start
< t
|| keytran
.start
< t
))
8712 int used_mouse_menu
= 0;
8714 /* Where the last real key started. If we need to throw away a
8715 key that has expanded into more than one element of keybuf
8716 (say, a mouse click on the mode line which is being treated
8717 as [mode-line (mouse-...)], then we backtrack to this point
8719 volatile int last_real_key_start
;
8721 /* These variables are analogous to echo_start and keys_start;
8722 while those allow us to restart the entire key sequence,
8723 echo_local_start and keys_local_start allow us to throw away
8725 volatile int echo_local_start
, keys_local_start
, local_first_binding
;
8727 eassert (fkey
.end
== t
|| (fkey
.end
> t
&& fkey
.end
<= mock_input
));
8728 eassert (fkey
.start
<= fkey
.end
);
8729 eassert (keytran
.start
<= keytran
.end
);
8730 /* key-translation-map is applied *after* function-key-map. */
8731 eassert (keytran
.end
<= fkey
.start
);
8733 if (first_unbound
< fkey
.start
&& first_unbound
< keytran
.start
)
8734 { /* The prefix upto first_unbound has no binding and has
8735 no translation left to do either, so we know it's unbound.
8736 If we don't stop now, we risk staying here indefinitely
8737 (if the user keeps entering fkey or keytran prefixes
8738 like C-c ESC ESC ESC ESC ...) */
8740 for (i
= first_unbound
+ 1; i
< t
; i
++)
8741 keybuf
[i
- first_unbound
- 1] = keybuf
[i
];
8742 mock_input
= t
- first_unbound
- 1;
8743 fkey
.end
= fkey
.start
-= first_unbound
+ 1;
8744 fkey
.map
= fkey
.parent
;
8745 keytran
.end
= keytran
.start
-= first_unbound
+ 1;
8746 keytran
.map
= keytran
.parent
;
8747 goto replay_sequence
;
8751 error ("Key sequence too long");
8754 echo_local_start
= echo_length ();
8755 keys_local_start
= this_command_key_count
;
8756 local_first_binding
= first_binding
;
8759 /* These are no-ops, unless we throw away a keystroke below and
8760 jumped back up to replay_key; in that case, these restore the
8761 variables to their original state, allowing us to replay the
8763 if (INTERACTIVE
&& t
< mock_input
)
8764 echo_truncate (echo_local_start
);
8765 this_command_key_count
= keys_local_start
;
8766 first_binding
= local_first_binding
;
8768 /* By default, assume each event is "real". */
8769 last_real_key_start
= t
;
8771 /* Does mock_input indicate that we are re-reading a key sequence? */
8775 add_command_key (key
);
8776 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8777 && NILP (Fzerop (Vecho_keystrokes
)))
8781 /* If not, we should actually read a character. */
8786 KBOARD
*interrupted_kboard
= current_kboard
;
8787 struct frame
*interrupted_frame
= SELECTED_FRAME ();
8788 if (setjmp (wrong_kboard_jmpbuf
))
8790 if (!NILP (delayed_switch_frame
))
8792 interrupted_kboard
->kbd_queue
8793 = Fcons (delayed_switch_frame
,
8794 interrupted_kboard
->kbd_queue
);
8795 delayed_switch_frame
= Qnil
;
8798 interrupted_kboard
->kbd_queue
8799 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
8801 /* If the side queue is non-empty, ensure it begins with a
8802 switch-frame, so we'll replay it in the right context. */
8803 if (CONSP (interrupted_kboard
->kbd_queue
)
8804 && (key
= XCAR (interrupted_kboard
->kbd_queue
),
8805 !(EVENT_HAS_PARAMETERS (key
)
8806 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
8810 XSETFRAME (frame
, interrupted_frame
);
8811 interrupted_kboard
->kbd_queue
8812 = Fcons (make_lispy_switch_frame (frame
),
8813 interrupted_kboard
->kbd_queue
);
8816 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8817 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8818 goto replay_sequence
;
8821 key
= read_char (NILP (prompt
), nmaps
,
8822 (Lisp_Object
*) submaps
, last_nonmenu_event
,
8826 /* read_char returns t when it shows a menu and the user rejects it.
8830 unbind_to (count
, Qnil
);
8835 /* read_char returns -1 at the end of a macro.
8836 Emacs 18 handles this by returning immediately with a
8837 zero, so that's what we'll do. */
8838 if (INTEGERP (key
) && XINT (key
) == -1)
8841 /* The Microsoft C compiler can't handle the goto that
8847 /* If the current buffer has been changed from under us, the
8848 keymap may have changed, so replay the sequence. */
8851 timer_resume_idle ();
8854 /* Reset the current buffer from the selected window
8855 in case something changed the former and not the latter.
8856 This is to be more consistent with the behavior
8857 of the command_loop_1. */
8858 if (fix_current_buffer
)
8860 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
8862 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
8863 Fset_buffer (XWINDOW (selected_window
)->buffer
);
8866 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8867 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8868 goto replay_sequence
;
8871 /* If we have a quit that was typed in another frame, and
8872 quit_throw_to_read_char switched buffers,
8873 replay to get the right keymap. */
8875 && XINT (key
) == quit_char
8876 && current_buffer
!= starting_buffer
)
8879 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8883 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8884 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8885 goto replay_sequence
;
8890 if (EVENT_HAS_PARAMETERS (key
)
8891 /* Either a `switch-frame' or a `select-window' event. */
8892 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)), Qswitch_frame
))
8894 /* If we're at the beginning of a key sequence, and the caller
8895 says it's okay, go ahead and return this event. If we're
8896 in the midst of a key sequence, delay it until the end. */
8897 if (t
> 0 || !can_return_switch_frame
)
8899 delayed_switch_frame
= key
;
8905 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8908 /* Clicks in non-text areas get prefixed by the symbol
8909 in their CHAR-ADDRESS field. For example, a click on
8910 the mode line is prefixed by the symbol `mode-line'.
8912 Furthermore, key sequences beginning with mouse clicks
8913 are read using the keymaps of the buffer clicked on, not
8914 the current buffer. So we may have to switch the buffer
8917 When we turn one event into two events, we must make sure
8918 that neither of the two looks like the original--so that,
8919 if we replay the events, they won't be expanded again.
8920 If not for this, such reexpansion could happen either here
8921 or when user programs play with this-command-keys. */
8922 if (EVENT_HAS_PARAMETERS (key
))
8927 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
8928 if (EQ (kind
, Qmouse_click
))
8930 Lisp_Object window
, posn
;
8932 window
= POSN_WINDOW (EVENT_START (key
));
8933 posn
= POSN_POSN (EVENT_START (key
));
8936 || (!NILP (fake_prefixed_keys
)
8937 && !NILP (Fmemq (key
, fake_prefixed_keys
))))
8939 /* We're looking a second time at an event for which
8940 we generated a fake prefix key. Set
8941 last_real_key_start appropriately. */
8943 last_real_key_start
= t
- 1;
8946 /* Key sequences beginning with mouse clicks are
8947 read using the keymaps in the buffer clicked on,
8948 not the current buffer. If we're at the
8949 beginning of a key sequence, switch buffers. */
8950 if (last_real_key_start
== 0
8952 && BUFFERP (XWINDOW (window
)->buffer
)
8953 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
8955 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8959 /* Arrange to go back to the original buffer once we're
8960 done reading the key sequence. Note that we can't
8961 use save_excursion_{save,restore} here, because they
8962 save point as well as the current buffer; we don't
8963 want to save point, because redisplay may change it,
8964 to accommodate a Fset_window_start or something. We
8965 don't want to do this at the top of the function,
8966 because we may get input from a subprocess which
8967 wants to change the selected window and stuff (say,
8969 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
8971 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
8973 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
8974 orig_local_map
= get_local_map (PT
, current_buffer
,
8976 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8977 goto replay_sequence
;
8980 /* For a mouse click, get the local text-property keymap
8981 of the place clicked on, rather than point. */
8982 if (last_real_key_start
== 0
8983 && CONSP (XCDR (key
))
8984 && ! localized_local_map
)
8986 Lisp_Object map_here
, start
, pos
;
8988 localized_local_map
= 1;
8989 start
= EVENT_START (key
);
8991 if (CONSP (start
) && POSN_INBUFFER_P (start
))
8993 pos
= POSN_BUFFER_POSN (start
);
8995 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
8997 map_here
= get_local_map (XINT (pos
),
8998 current_buffer
, Qlocal_map
);
8999 if (!EQ (map_here
, orig_local_map
))
9001 orig_local_map
= map_here
;
9005 goto replay_sequence
;
9007 map_here
= get_local_map (XINT (pos
),
9008 current_buffer
, Qkeymap
);
9009 if (!EQ (map_here
, orig_keymap
))
9011 orig_keymap
= map_here
;
9015 goto replay_sequence
;
9021 /* Expand mode-line and scroll-bar events into two events:
9022 use posn as a fake prefix key. */
9024 && (NILP (fake_prefixed_keys
)
9025 || NILP (Fmemq (key
, fake_prefixed_keys
))))
9027 if (t
+ 1 >= bufsize
)
9028 error ("Key sequence too long");
9031 keybuf
[t
+ 1] = key
;
9034 /* Record that a fake prefix key has been generated
9035 for KEY. Don't modify the event; this would
9036 prevent proper action when the event is pushed
9037 back into unread-command-events. */
9038 fake_prefixed_keys
= Fcons (key
, fake_prefixed_keys
);
9040 /* If on a mode line string with a local keymap,
9041 reconsider the key sequence with that keymap. */
9042 if (string
= POSN_STRING (EVENT_START (key
)),
9043 (CONSP (string
) && STRINGP (XCAR (string
))))
9045 Lisp_Object pos
, map
, map2
;
9047 pos
= XCDR (string
);
9048 string
= XCAR (string
);
9050 && XINT (pos
) < SCHARS (string
))
9052 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9054 orig_local_map
= map
;
9055 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9058 if (!NILP (map
) || !NILP (map2
))
9059 goto replay_sequence
;
9065 else if (NILP (from_string
)
9066 && (string
= POSN_STRING (EVENT_START (key
)),
9067 (CONSP (string
) && STRINGP (XCAR (string
)))))
9069 /* For a click on a string, i.e. overlay string or a
9070 string displayed via the `display' property,
9071 consider `local-map' and `keymap' properties of
9073 Lisp_Object pos
, map
, map2
;
9075 pos
= XCDR (string
);
9076 string
= XCAR (string
);
9078 && XINT (pos
) < SCHARS (string
))
9080 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9082 orig_local_map
= map
;
9083 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9087 if (!NILP (map
) || !NILP (map2
))
9089 from_string
= string
;
9090 goto replay_sequence
;
9095 else if (CONSP (XCDR (key
))
9096 && CONSP (EVENT_START (key
))
9097 && CONSP (XCDR (EVENT_START (key
))))
9101 posn
= POSN_POSN (EVENT_START (key
));
9102 /* Handle menu-bar events:
9103 insert the dummy prefix event `menu-bar'. */
9104 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
9106 if (t
+ 1 >= bufsize
)
9107 error ("Key sequence too long");
9111 /* Zap the position in key, so we know that we've
9112 expanded it, and don't try to do so again. */
9113 POSN_SET_POSN (EVENT_START (key
),
9114 Fcons (posn
, Qnil
));
9117 goto replay_sequence
;
9119 else if (CONSP (posn
))
9121 /* We're looking at the second event of a
9122 sequence which we expanded before. Set
9123 last_real_key_start appropriately. */
9124 if (last_real_key_start
== t
&& t
> 0)
9125 last_real_key_start
= t
- 1;
9130 /* We have finally decided that KEY is something we might want
9132 first_binding
= (follow_key (key
,
9133 nmaps
- first_binding
,
9134 submaps
+ first_binding
,
9135 defs
+ first_binding
,
9136 submaps
+ first_binding
)
9139 /* If KEY wasn't bound, we'll try some fallbacks. */
9140 if (first_binding
< nmaps
)
9141 /* This is needed for the following scenario:
9142 event 0: a down-event that gets dropped by calling replay_key.
9143 event 1: some normal prefix like C-h.
9144 After event 0, first_unbound is 0, after event 1 fkey.start
9145 and keytran.start are both 1, so when we see that C-h is bound,
9146 we need to update first_unbound. */
9147 first_unbound
= max (t
+ 1, first_unbound
);
9152 /* Remember the position to put an upper bound on fkey.start. */
9153 first_unbound
= min (t
, first_unbound
);
9155 head
= EVENT_HEAD (key
);
9156 if (help_char_p (head
) && t
> 0)
9158 read_key_sequence_cmd
= Vprefix_help_command
;
9160 last_nonmenu_event
= key
;
9161 /* The Microsoft C compiler can't handle the goto that
9169 Lisp_Object breakdown
;
9172 breakdown
= parse_modifiers (head
);
9173 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9174 /* Attempt to reduce an unbound mouse event to a simpler
9175 event that is bound:
9176 Drags reduce to clicks.
9177 Double-clicks reduce to clicks.
9178 Triple-clicks reduce to double-clicks, then to clicks.
9179 Down-clicks are eliminated.
9180 Double-downs reduce to downs, then are eliminated.
9181 Triple-downs reduce to double-downs, then to downs,
9182 then are eliminated. */
9183 if (modifiers
& (down_modifier
| drag_modifier
9184 | double_modifier
| triple_modifier
))
9186 while (modifiers
& (down_modifier
| drag_modifier
9187 | double_modifier
| triple_modifier
))
9189 Lisp_Object new_head
, new_click
;
9190 if (modifiers
& triple_modifier
)
9191 modifiers
^= (double_modifier
| triple_modifier
);
9192 else if (modifiers
& double_modifier
)
9193 modifiers
&= ~double_modifier
;
9194 else if (modifiers
& drag_modifier
)
9195 modifiers
&= ~drag_modifier
;
9198 /* Dispose of this `down' event by simply jumping
9199 back to replay_key, to get another event.
9201 Note that if this event came from mock input,
9202 then just jumping back to replay_key will just
9203 hand it to us again. So we have to wipe out any
9206 We could delete keybuf[t] and shift everything
9207 after that to the left by one spot, but we'd also
9208 have to fix up any variable that points into
9209 keybuf, and shifting isn't really necessary
9212 Adding prefixes for non-textual mouse clicks
9213 creates two characters of mock input, and both
9214 must be thrown away. If we're only looking at
9215 the prefix now, we can just jump back to
9216 replay_key. On the other hand, if we've already
9217 processed the prefix, and now the actual click
9218 itself is giving us trouble, then we've lost the
9219 state of the keymaps we want to backtrack to, and
9220 we need to replay the whole sequence to rebuild
9223 Beyond that, only function key expansion could
9224 create more than two keys, but that should never
9225 generate mouse events, so it's okay to zero
9226 mock_input in that case too.
9228 FIXME: The above paragraph seems just plain
9229 wrong, if you consider things like
9230 xterm-mouse-mode. -stef
9232 Isn't this just the most wonderful code ever? */
9234 /* If mock_input > t + 1, the above simplification
9235 will actually end up dropping keys on the floor.
9236 This is probably OK for now, but even
9237 if mock_input <= t + 1, we need to adjust fkey
9239 Typical case [header-line down-mouse-N]:
9240 mock_input = 2, t = 1, fkey.end = 1,
9241 last_real_key_start = 0. */
9242 if (fkey
.end
> last_real_key_start
)
9244 fkey
.end
= fkey
.start
9245 = min (last_real_key_start
, fkey
.start
);
9246 fkey
.map
= fkey
.parent
;
9247 if (keytran
.end
> last_real_key_start
)
9249 keytran
.end
= keytran
.start
9250 = min (last_real_key_start
, keytran
.start
);
9251 keytran
.map
= keytran
.parent
;
9254 if (t
== last_real_key_start
)
9261 mock_input
= last_real_key_start
;
9262 goto replay_sequence
;
9267 = apply_modifiers (modifiers
, XCAR (breakdown
));
9269 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
9271 /* Look for a binding for this new key. follow_key
9272 promises that it didn't munge submaps the
9273 last time we called it, since key was unbound. */
9275 = (follow_key (new_click
,
9276 nmaps
- local_first_binding
,
9277 submaps
+ local_first_binding
,
9278 defs
+ local_first_binding
,
9279 submaps
+ local_first_binding
)
9280 + local_first_binding
);
9282 /* If that click is bound, go for it. */
9283 if (first_binding
< nmaps
)
9288 /* Otherwise, we'll leave key set to the drag event. */
9295 /* Normally, last_nonmenu_event gets the previous key we read.
9296 But when a mouse popup menu is being used,
9297 we don't update last_nonmenu_event; it continues to hold the mouse
9298 event that preceded the first level of menu. */
9299 if (!used_mouse_menu
)
9300 last_nonmenu_event
= key
;
9302 /* Record what part of this_command_keys is the current key sequence. */
9303 this_single_command_key_start
= this_command_key_count
- t
;
9305 if (first_binding
< nmaps
&& NILP (submaps
[first_binding
]))
9306 /* There is a binding and it's not a prefix.
9307 There is thus no function-key in this sequence.
9308 Moving fkey.start is important in this case to allow keytran.start
9309 to go over the sequence before we return (since we keep the
9310 invariant that keytran.end <= fkey.start). */
9313 (fkey
.start
= fkey
.end
= t
, fkey
.map
= fkey
.parent
);
9316 /* If the sequence is unbound, see if we can hang a function key
9317 off the end of it. */
9318 /* Continue scan from fkey.end until we find a bound suffix. */
9319 while (fkey
.end
< t
)
9321 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9324 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9325 done
= keyremap_step (keybuf
, bufsize
, &fkey
,
9326 max (t
, mock_input
),
9327 /* If there's a binding (i.e.
9328 first_binding >= nmaps) we don't want
9329 to apply this function-key-mapping. */
9330 fkey
.end
+ 1 == t
&& first_binding
>= nmaps
,
9335 mock_input
= diff
+ max (t
, mock_input
);
9336 goto replay_sequence
;
9340 /* Look for this sequence in key-translation-map.
9341 Scan from keytran.end until we find a bound suffix. */
9342 while (keytran
.end
< fkey
.start
)
9344 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9347 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9348 done
= keyremap_step (keybuf
, bufsize
, &keytran
, max (t
, mock_input
),
9353 mock_input
= diff
+ max (t
, mock_input
);
9354 /* Adjust the function-key-map counters. */
9358 goto replay_sequence
;
9362 /* If KEY is not defined in any of the keymaps,
9363 and cannot be part of a function key or translation,
9364 and is an upper case letter
9365 use the corresponding lower-case letter instead. */
9366 if (first_binding
>= nmaps
9367 && fkey
.start
>= t
&& keytran
.start
>= t
9369 && ((CHARACTERP (make_number (XINT (key
) & ~CHAR_MODIFIER_MASK
))
9370 && UPPERCASEP (XINT (key
) & ~CHAR_MODIFIER_MASK
))
9371 || (XINT (key
) & shift_modifier
)))
9373 Lisp_Object new_key
;
9375 original_uppercase
= key
;
9376 original_uppercase_position
= t
- 1;
9378 if (XINT (key
) & shift_modifier
)
9379 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
9381 XSETINT (new_key
, (DOWNCASE (XINT (key
) & ~CHAR_MODIFIER_MASK
)
9382 | (XINT (key
) & ~CHAR_MODIFIER_MASK
)));
9384 /* We have to do this unconditionally, regardless of whether
9385 the lower-case char is defined in the keymaps, because they
9386 might get translated through function-key-map. */
9387 keybuf
[t
- 1] = new_key
;
9388 mock_input
= max (t
, mock_input
);
9390 goto replay_sequence
;
9392 /* If KEY is not defined in any of the keymaps,
9393 and cannot be part of a function key or translation,
9394 and is a shifted function key,
9395 use the corresponding unshifted function key instead. */
9396 if (first_binding
>= nmaps
9397 && fkey
.start
>= t
&& keytran
.start
>= t
9400 Lisp_Object breakdown
;
9403 breakdown
= parse_modifiers (key
);
9404 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9405 if (modifiers
& shift_modifier
)
9407 Lisp_Object new_key
;
9409 original_uppercase
= key
;
9410 original_uppercase_position
= t
- 1;
9412 modifiers
&= ~shift_modifier
;
9413 new_key
= apply_modifiers (modifiers
,
9416 keybuf
[t
- 1] = new_key
;
9417 mock_input
= max (t
, mock_input
);
9418 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
9419 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
9421 goto replay_sequence
;
9427 read_key_sequence_cmd
= (first_binding
< nmaps
9428 ? defs
[first_binding
]
9431 unread_switch_frame
= delayed_switch_frame
;
9432 unbind_to (count
, Qnil
);
9434 /* Don't downcase the last character if the caller says don't.
9435 Don't downcase it if the result is undefined, either. */
9436 if ((dont_downcase_last
|| first_binding
>= nmaps
)
9437 && t
- 1 == original_uppercase_position
)
9438 keybuf
[t
- 1] = original_uppercase
;
9440 /* Occasionally we fabricate events, perhaps by expanding something
9441 according to function-key-map, or by adding a prefix symbol to a
9442 mouse click in the scroll bar or modeline. In this cases, return
9443 the entire generated key sequence, even if we hit an unbound
9444 prefix or a definition before the end. This means that you will
9445 be able to push back the event properly, and also means that
9446 read-key-sequence will always return a logical unit.
9449 for (; t
< mock_input
; t
++)
9451 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
9452 && NILP (Fzerop (Vecho_keystrokes
)))
9453 echo_char (keybuf
[t
]);
9454 add_command_key (keybuf
[t
]);
9463 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 5, 0,
9464 doc
: /* Read a sequence of keystrokes and return as a string or vector.
9465 The sequence is sufficient to specify a non-prefix command in the
9466 current local and global maps.
9468 First arg PROMPT is a prompt string. If nil, do not prompt specially.
9469 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos
9470 as a continuation of the previous key.
9472 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not
9473 convert the last event to lower case. (Normally any upper case event
9474 is converted to lower case if the original event is undefined and the lower
9475 case equivalent is defined.) A non-nil value is appropriate for reading
9476 a key sequence to be defined.
9478 A C-g typed while in this function is treated like any other character,
9479 and `quit-flag' is not set.
9481 If the key sequence starts with a mouse click, then the sequence is read
9482 using the keymaps of the buffer of the window clicked in, not the buffer
9483 of the selected window as normal.
9485 `read-key-sequence' drops unbound button-down events, since you normally
9486 only care about the click or drag events which follow them. If a drag
9487 or multi-click event is unbound, but the corresponding click event would
9488 be bound, `read-key-sequence' turns the event into a click event at the
9489 drag's starting position. This means that you don't have to distinguish
9490 between click and drag, double, or triple events unless you want to.
9492 `read-key-sequence' prefixes mouse events on mode lines, the vertical
9493 lines separating windows, and scroll bars with imaginary keys
9494 `mode-line', `vertical-line', and `vertical-scroll-bar'.
9496 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this
9497 function will process a switch-frame event if the user switches frames
9498 before typing anything. If the user switches frames in the middle of a
9499 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME
9500 is nil, then the event will be put off until after the current key sequence.
9502 `read-key-sequence' checks `function-key-map' for function key
9503 sequences, where they wouldn't conflict with ordinary bindings. See
9504 `function-key-map' for more details.
9506 The optional fifth argument COMMAND-LOOP, if non-nil, means
9507 that this key sequence is being read by something that will
9508 read commands one after another. It should be nil if the caller
9509 will read just one key sequence. */)
9510 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9512 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9513 Lisp_Object can_return_switch_frame
, command_loop
;
9515 Lisp_Object keybuf
[30];
9517 struct gcpro gcpro1
;
9518 int count
= SPECPDL_INDEX ();
9521 CHECK_STRING (prompt
);
9524 specbind (Qinput_method_exit_on_first_char
,
9525 (NILP (command_loop
) ? Qt
: Qnil
));
9526 specbind (Qinput_method_use_echo_area
,
9527 (NILP (command_loop
) ? Qt
: Qnil
));
9529 bzero (keybuf
, sizeof keybuf
);
9531 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9533 if (NILP (continue_echo
))
9535 this_command_key_count
= 0;
9536 this_command_key_count_reset
= 0;
9537 this_single_command_key_start
= 0;
9540 #ifdef HAVE_X_WINDOWS
9541 if (display_hourglass_p
)
9542 cancel_hourglass ();
9545 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9546 prompt
, ! NILP (dont_downcase_last
),
9547 ! NILP (can_return_switch_frame
), 0);
9549 #if 0 /* The following is fine for code reading a key sequence and
9550 then proceeding with a lenghty computation, but it's not good
9551 for code reading keys in a loop, like an input method. */
9552 #ifdef HAVE_X_WINDOWS
9553 if (display_hourglass_p
)
9564 return unbind_to (count
, make_event_array (i
, keybuf
));
9567 DEFUN ("read-key-sequence-vector", Fread_key_sequence_vector
,
9568 Sread_key_sequence_vector
, 1, 5, 0,
9569 doc
: /* Like `read-key-sequence' but always return a vector. */)
9570 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9572 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9573 Lisp_Object can_return_switch_frame
, command_loop
;
9575 Lisp_Object keybuf
[30];
9577 struct gcpro gcpro1
;
9578 int count
= SPECPDL_INDEX ();
9581 CHECK_STRING (prompt
);
9584 specbind (Qinput_method_exit_on_first_char
,
9585 (NILP (command_loop
) ? Qt
: Qnil
));
9586 specbind (Qinput_method_use_echo_area
,
9587 (NILP (command_loop
) ? Qt
: Qnil
));
9589 bzero (keybuf
, sizeof keybuf
);
9591 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9593 if (NILP (continue_echo
))
9595 this_command_key_count
= 0;
9596 this_command_key_count_reset
= 0;
9597 this_single_command_key_start
= 0;
9600 #ifdef HAVE_X_WINDOWS
9601 if (display_hourglass_p
)
9602 cancel_hourglass ();
9605 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9606 prompt
, ! NILP (dont_downcase_last
),
9607 ! NILP (can_return_switch_frame
), 0);
9609 #ifdef HAVE_X_WINDOWS
9610 if (display_hourglass_p
)
9620 return unbind_to (count
, Fvector (i
, keybuf
));
9623 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
9624 doc
: /* Execute CMD as an editor command.
9625 CMD must be a symbol that satisfies the `commandp' predicate.
9626 Optional second arg RECORD-FLAG non-nil
9627 means unconditionally put this command in `command-history'.
9628 Otherwise, that is done only if an arg is read using the minibuffer.
9629 The argument KEYS specifies the value to use instead of (this-command-keys)
9630 when reading the arguments; if it is nil, (this-command-keys) is used.
9631 The argument SPECIAL, if non-nil, means that this command is executing
9632 a special event, so ignore the prefix argument and don't clear it. */)
9633 (cmd
, record_flag
, keys
, special
)
9634 Lisp_Object cmd
, record_flag
, keys
, special
;
9636 register Lisp_Object final
;
9637 register Lisp_Object tem
;
9638 Lisp_Object prefixarg
;
9639 struct backtrace backtrace
;
9640 extern int debug_on_next_call
;
9642 debug_on_next_call
= 0;
9646 prefixarg
= current_kboard
->Vprefix_arg
;
9647 Vcurrent_prefix_arg
= prefixarg
;
9648 current_kboard
->Vprefix_arg
= Qnil
;
9655 tem
= Fget (cmd
, Qdisabled
);
9656 if (!NILP (tem
) && !NILP (Vrun_hooks
))
9658 tem
= Fsymbol_value (Qdisabled_command_function
);
9660 return call1 (Vrun_hooks
, Qdisabled_command_function
);
9666 final
= Findirect_function (cmd
);
9668 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
9670 struct gcpro gcpro1
, gcpro2
;
9672 GCPRO2 (cmd
, prefixarg
);
9673 do_autoload (final
, cmd
);
9680 if (STRINGP (final
) || VECTORP (final
))
9682 /* If requested, place the macro in the command history. For
9683 other sorts of commands, call-interactively takes care of
9685 if (!NILP (record_flag
))
9688 = Fcons (Fcons (Qexecute_kbd_macro
,
9689 Fcons (final
, Fcons (prefixarg
, Qnil
))),
9692 /* Don't keep command history around forever. */
9693 if (NUMBERP (Vhistory_length
) && XINT (Vhistory_length
) > 0)
9695 tem
= Fnthcdr (Vhistory_length
, Vcommand_history
);
9697 XSETCDR (tem
, Qnil
);
9701 return Fexecute_kbd_macro (final
, prefixarg
, Qnil
);
9704 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
9706 backtrace
.next
= backtrace_list
;
9707 backtrace_list
= &backtrace
;
9708 backtrace
.function
= &Qcall_interactively
;
9709 backtrace
.args
= &cmd
;
9710 backtrace
.nargs
= 1;
9711 backtrace
.evalargs
= 0;
9712 backtrace
.debug_on_exit
= 0;
9714 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
9716 backtrace_list
= backtrace
.next
;
9724 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
9726 doc
: /* Read function name, then read its arguments and call it. */)
9728 Lisp_Object prefixarg
;
9730 Lisp_Object function
;
9732 int saved_last_point_position
;
9733 Lisp_Object saved_keys
, saved_last_point_position_buffer
;
9734 Lisp_Object bindings
, value
;
9735 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9736 #ifdef HAVE_X_WINDOWS
9737 /* The call to Fcompleting_read wil start and cancel the hourglass,
9738 but if the hourglass was already scheduled, this means that no
9739 hourglass will be shown for the actual M-x command itself.
9740 So we restart it if it is already scheduled. Note that checking
9741 hourglass_shown_p is not enough, normally the hourglass is not shown,
9742 just scheduled to be shown. */
9743 int hstarted
= hourglass_started ();
9746 saved_keys
= Fvector (this_command_key_count
,
9747 XVECTOR (this_command_keys
)->contents
);
9748 saved_last_point_position_buffer
= last_point_position_buffer
;
9749 saved_last_point_position
= last_point_position
;
9751 GCPRO3 (saved_keys
, prefixarg
, saved_last_point_position_buffer
);
9753 if (EQ (prefixarg
, Qminus
))
9755 else if (CONSP (prefixarg
) && XINT (XCAR (prefixarg
)) == 4)
9756 strcpy (buf
, "C-u ");
9757 else if (CONSP (prefixarg
) && INTEGERP (XCAR (prefixarg
)))
9758 sprintf (buf
, "%ld ", (long) XINT (XCAR (prefixarg
)));
9759 else if (INTEGERP (prefixarg
))
9760 sprintf (buf
, "%ld ", (long) XINT (prefixarg
));
9762 /* This isn't strictly correct if execute-extended-command
9763 is bound to anything else. Perhaps it should use
9764 this_command_keys? */
9765 strcat (buf
, "M-x ");
9767 /* Prompt with buf, and then read a string, completing from and
9768 restricting to the set of all defined commands. Don't provide
9769 any initial input. Save the command read on the extended-command
9771 function
= Fcompleting_read (build_string (buf
),
9772 Vobarray
, Qcommandp
,
9773 Qt
, Qnil
, Qextended_command_history
, Qnil
,
9776 #ifdef HAVE_X_WINDOWS
9777 if (hstarted
) start_hourglass ();
9780 if (STRINGP (function
) && SCHARS (function
) == 0)
9781 error ("No command name given");
9783 /* Set this_command_keys to the concatenation of saved_keys and
9784 function, followed by a RET. */
9789 this_command_key_count
= 0;
9790 this_command_key_count_reset
= 0;
9791 this_single_command_key_start
= 0;
9793 keys
= XVECTOR (saved_keys
)->contents
;
9794 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
9795 add_command_key (keys
[i
]);
9797 for (i
= 0; i
< SCHARS (function
); i
++)
9798 add_command_key (Faref (function
, make_number (i
)));
9800 add_command_key (make_number ('\015'));
9803 last_point_position
= saved_last_point_position
;
9804 last_point_position_buffer
= saved_last_point_position_buffer
;
9808 function
= Fintern (function
, Qnil
);
9809 current_kboard
->Vprefix_arg
= prefixarg
;
9810 Vthis_command
= function
;
9811 real_this_command
= function
;
9813 /* If enabled, show which key runs this command. */
9814 if (!NILP (Vsuggest_key_bindings
)
9815 && NILP (Vexecuting_kbd_macro
)
9816 && SYMBOLP (function
))
9817 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
9823 GCPRO2 (bindings
, value
);
9824 value
= Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
9826 /* If the command has a key binding, print it now. */
9827 if (!NILP (bindings
)
9828 && ! (VECTORP (bindings
) && EQ (Faref (bindings
, make_number (0)),
9831 /* But first wait, and skip the message if there is input. */
9833 if (!NILP (echo_area_buffer
[0]))
9834 /* This command displayed something in the echo area;
9835 so wait a few seconds, then display our suggestion message. */
9836 delay_time
= (NUMBERP (Vsuggest_key_bindings
)
9837 ? XINT (Vsuggest_key_bindings
) : 2);
9839 /* This command left the echo area empty,
9840 so display our message immediately. */
9843 if (!NILP (Fsit_for (make_number (delay_time
), Qnil
, Qnil
))
9844 && ! CONSP (Vunread_command_events
))
9846 Lisp_Object binding
;
9848 int message_p
= push_message ();
9849 int count
= SPECPDL_INDEX ();
9851 record_unwind_protect (pop_message_unwind
, Qnil
);
9852 binding
= Fkey_description (bindings
, Qnil
);
9855 = (char *) alloca (SCHARS (SYMBOL_NAME (function
))
9858 sprintf (newmessage
, "You can run the command `%s' with %s",
9859 SDATA (SYMBOL_NAME (function
)),
9861 message2_nolog (newmessage
,
9862 strlen (newmessage
),
9863 STRING_MULTIBYTE (binding
));
9864 if (!NILP (Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
9865 ? Vsuggest_key_bindings
: make_number (2)),
9870 unbind_to (count
, Qnil
);
9874 RETURN_UNGCPRO (value
);
9878 /* Return nonzero if input events are pending. */
9881 detect_input_pending ()
9884 get_input_pending (&input_pending
, 0);
9886 return input_pending
;
9889 /* Return nonzero if input events other than mouse movements are
9893 detect_input_pending_ignore_squeezables ()
9896 get_input_pending (&input_pending
, READABLE_EVENTS_IGNORE_SQUEEZABLES
);
9898 return input_pending
;
9901 /* Return nonzero if input events are pending, and run any pending timers. */
9904 detect_input_pending_run_timers (do_display
)
9907 int old_timers_run
= timers_run
;
9910 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
9912 if (old_timers_run
!= timers_run
&& do_display
)
9914 redisplay_preserve_echo_area (8);
9915 /* The following fixes a bug when using lazy-lock with
9916 lazy-lock-defer-on-the-fly set to t, i.e. when fontifying
9917 from an idle timer function. The symptom of the bug is that
9918 the cursor sometimes doesn't become visible until the next X
9919 event is processed. --gerd. */
9921 rif
->flush_display (NULL
);
9924 return input_pending
;
9927 /* This is called in some cases before a possible quit.
9928 It cases the next call to detect_input_pending to recompute input_pending.
9929 So calling this function unnecessarily can't do any harm. */
9932 clear_input_pending ()
9937 /* Return nonzero if there are pending requeued events.
9938 This isn't used yet. The hope is to make wait_reading_process_output
9939 call it, and return if it runs Lisp code that unreads something.
9940 The problem is, kbd_buffer_get_event needs to be fixed to know what
9941 to do in that case. It isn't trivial. */
9944 requeued_events_pending_p ()
9946 return (!NILP (Vunread_command_events
) || unread_command_char
!= -1);
9950 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
9951 doc
: /* Return t if command input is currently available with no wait.
9952 Actually, the value is nil only if we can be sure that no input is available;
9953 if there is a doubt, the value is t. */)
9956 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
9959 get_input_pending (&input_pending
,
9960 READABLE_EVENTS_DO_TIMERS_NOW
9961 | READABLE_EVENTS_FILTER_EVENTS
);
9962 return input_pending
> 0 ? Qt
: Qnil
;
9965 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
9966 doc
: /* Return vector of last 100 events, not counting those from keyboard macros. */)
9969 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
9972 if (total_keys
< NUM_RECENT_KEYS
)
9973 return Fvector (total_keys
, keys
);
9976 val
= Fvector (NUM_RECENT_KEYS
, keys
);
9977 bcopy (keys
+ recent_keys_index
,
9978 XVECTOR (val
)->contents
,
9979 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
9981 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
9982 recent_keys_index
* sizeof (Lisp_Object
));
9987 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
9988 doc
: /* Return the key sequence that invoked this command.
9989 However, if the command has called `read-key-sequence', it returns
9990 the last key sequence that has been read.
9991 The value is a string or a vector. */)
9994 return make_event_array (this_command_key_count
,
9995 XVECTOR (this_command_keys
)->contents
);
9998 DEFUN ("this-command-keys-vector", Fthis_command_keys_vector
, Sthis_command_keys_vector
, 0, 0, 0,
9999 doc
: /* Return the key sequence that invoked this command, as a vector.
10000 However, if the command has called `read-key-sequence', it returns
10001 the last key sequence that has been read. */)
10004 return Fvector (this_command_key_count
,
10005 XVECTOR (this_command_keys
)->contents
);
10008 DEFUN ("this-single-command-keys", Fthis_single_command_keys
,
10009 Sthis_single_command_keys
, 0, 0, 0,
10010 doc
: /* Return the key sequence that invoked this command.
10011 More generally, it returns the last key sequence read, either by
10012 the command loop or by `read-key-sequence'.
10013 Unlike `this-command-keys', this function's value
10014 does not include prefix arguments.
10015 The value is always a vector. */)
10018 return Fvector (this_command_key_count
10019 - this_single_command_key_start
,
10020 (XVECTOR (this_command_keys
)->contents
10021 + this_single_command_key_start
));
10024 DEFUN ("this-single-command-raw-keys", Fthis_single_command_raw_keys
,
10025 Sthis_single_command_raw_keys
, 0, 0, 0,
10026 doc
: /* Return the raw events that were read for this command.
10027 More generally, it returns the last key sequence read, either by
10028 the command loop or by `read-key-sequence'.
10029 Unlike `this-single-command-keys', this function's value
10030 shows the events before all translations (except for input methods).
10031 The value is always a vector. */)
10034 return Fvector (raw_keybuf_count
,
10035 (XVECTOR (raw_keybuf
)->contents
));
10038 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
10039 Sreset_this_command_lengths
, 0, 0, 0,
10040 doc
: /* Make the unread events replace the last command and echo.
10041 Used in `universal-argument-other-key'.
10043 `universal-argument-other-key' rereads the event just typed.
10044 It then gets translated through `function-key-map'.
10045 The translated event has to replace the real events,
10046 both in the value of (this-command-keys) and in echoing.
10047 To achieve this, `universal-argument-other-key' calls
10048 `reset-this-command-lengths', which discards the record of reading
10049 these events the first time. */)
10052 this_command_key_count
= before_command_key_count
;
10053 if (this_command_key_count
< this_single_command_key_start
)
10054 this_single_command_key_start
= this_command_key_count
;
10056 echo_truncate (before_command_echo_length
);
10058 /* Cause whatever we put into unread-command-events
10059 to echo as if it were being freshly read from the keyboard. */
10060 this_command_key_count_reset
= 1;
10065 DEFUN ("clear-this-command-keys", Fclear_this_command_keys
,
10066 Sclear_this_command_keys
, 0, 1, 0,
10067 doc
: /* Clear out the vector that `this-command-keys' returns.
10068 Also clear the record of the last 100 events, unless optional arg
10069 KEEP-RECORD is non-nil. */)
10071 Lisp_Object keep_record
;
10075 this_command_key_count
= 0;
10076 this_command_key_count_reset
= 0;
10078 if (NILP (keep_record
))
10080 for (i
= 0; i
< XVECTOR (recent_keys
)->size
; ++i
)
10081 XVECTOR (recent_keys
)->contents
[i
] = Qnil
;
10083 recent_keys_index
= 0;
10088 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
10089 doc
: /* Return the current depth in recursive edits. */)
10093 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
10097 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
10098 "FOpen dribble file: ",
10099 doc
: /* Start writing all keyboard characters to a dribble file called FILE.
10100 If FILE is nil, close any open dribble file. */)
10111 file
= Fexpand_file_name (file
, Qnil
);
10112 dribble
= fopen (SDATA (file
), "w");
10114 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
10119 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
10120 doc
: /* Discard the contents of the terminal input buffer.
10121 Also end any kbd macro being defined. */)
10124 if (!NILP (current_kboard
->defining_kbd_macro
))
10126 /* Discard the last command from the macro. */
10127 Fcancel_kbd_macro_events ();
10131 update_mode_lines
++;
10133 Vunread_command_events
= Qnil
;
10134 unread_command_char
= -1;
10136 discard_tty_input ();
10138 kbd_fetch_ptr
= kbd_store_ptr
;
10144 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
10145 doc
: /* Stop Emacs and return to superior process. You can resume later.
10146 If `cannot-suspend' is non-nil, or if the system doesn't support job
10147 control, run a subshell instead.
10149 If optional arg STUFFSTRING is non-nil, its characters are stuffed
10150 to be read as terminal input by Emacs's parent, after suspension.
10152 Before suspending, run the normal hook `suspend-hook'.
10153 After resumption run the normal hook `suspend-resume-hook'.
10155 Some operating systems cannot stop the Emacs process and resume it later.
10156 On such systems, Emacs starts a subshell instead of suspending. */)
10158 Lisp_Object stuffstring
;
10160 int count
= SPECPDL_INDEX ();
10161 int old_height
, old_width
;
10163 struct gcpro gcpro1
;
10165 if (!NILP (stuffstring
))
10166 CHECK_STRING (stuffstring
);
10168 /* Run the functions in suspend-hook. */
10169 if (!NILP (Vrun_hooks
))
10170 call1 (Vrun_hooks
, intern ("suspend-hook"));
10172 GCPRO1 (stuffstring
);
10173 get_frame_size (&old_width
, &old_height
);
10174 reset_sys_modes ();
10175 /* sys_suspend can get an error if it tries to fork a subshell
10176 and the system resources aren't available for that. */
10177 record_unwind_protect ((Lisp_Object (*) P_ ((Lisp_Object
))) init_sys_modes
,
10179 stuff_buffered_input (stuffstring
);
10180 if (cannot_suspend
)
10184 unbind_to (count
, Qnil
);
10186 /* Check if terminal/window size has changed.
10187 Note that this is not useful when we are running directly
10188 with a window system; but suspend should be disabled in that case. */
10189 get_frame_size (&width
, &height
);
10190 if (width
!= old_width
|| height
!= old_height
)
10191 change_frame_size (SELECTED_FRAME (), height
, width
, 0, 0, 0);
10193 /* Run suspend-resume-hook. */
10194 if (!NILP (Vrun_hooks
))
10195 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
10201 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
10202 Then in any case stuff anything Emacs has read ahead and not used. */
10205 stuff_buffered_input (stuffstring
)
10206 Lisp_Object stuffstring
;
10208 #ifdef SIGTSTP /* stuff_char is defined if SIGTSTP. */
10209 register unsigned char *p
;
10211 if (STRINGP (stuffstring
))
10213 register int count
;
10215 p
= SDATA (stuffstring
);
10216 count
= SBYTES (stuffstring
);
10217 while (count
-- > 0)
10222 /* Anything we have read ahead, put back for the shell to read. */
10223 /* ?? What should this do when we have multiple keyboards??
10224 Should we ignore anything that was typed in at the "wrong" kboard?
10226 rms: we should stuff everything back into the kboard
10228 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
10231 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
10232 kbd_fetch_ptr
= kbd_buffer
;
10233 if (kbd_fetch_ptr
->kind
== ASCII_KEYSTROKE_EVENT
)
10234 stuff_char (kbd_fetch_ptr
->code
);
10236 clear_event (kbd_fetch_ptr
);
10240 #endif /* SIGTSTP */
10244 set_waiting_for_input (time_to_clear
)
10245 EMACS_TIME
*time_to_clear
;
10247 input_available_clear_time
= time_to_clear
;
10249 /* Tell interrupt_signal to throw back to read_char, */
10250 waiting_for_input
= 1;
10252 /* If interrupt_signal was called before and buffered a C-g,
10253 make it run again now, to avoid timing error. */
10254 if (!NILP (Vquit_flag
))
10255 quit_throw_to_read_char ();
10259 clear_waiting_for_input ()
10261 /* Tell interrupt_signal not to throw back to read_char, */
10262 waiting_for_input
= 0;
10263 input_available_clear_time
= 0;
10266 /* This routine is called at interrupt level in response to C-g.
10268 If interrupt_input, this is the handler for SIGINT. Otherwise, it
10269 is called from kbd_buffer_store_event, in handling SIGIO or
10272 If `waiting_for_input' is non zero, then unless `echoing' is
10273 nonzero, immediately throw back to read_char.
10275 Otherwise it sets the Lisp variable quit-flag not-nil. This causes
10276 eval to throw, when it gets a chance. If quit-flag is already
10277 non-nil, it stops the job right away. */
10280 interrupt_signal (signalnum
) /* If we don't have an argument, */
10281 int signalnum
; /* some compilers complain in signal calls. */
10284 /* Must preserve main program's value of errno. */
10285 int old_errno
= errno
;
10286 struct frame
*sf
= SELECTED_FRAME ();
10288 #if defined (USG) && !defined (POSIX_SIGNALS)
10289 if (!read_socket_hook
&& NILP (Vwindow_system
))
10291 /* USG systems forget handlers when they are used;
10292 must reestablish each time */
10293 signal (SIGINT
, interrupt_signal
);
10294 signal (SIGQUIT
, interrupt_signal
);
10298 SIGNAL_THREAD_CHECK (signalnum
);
10301 if (!NILP (Vquit_flag
)
10302 && (FRAME_TERMCAP_P (sf
) || FRAME_MSDOS_P (sf
)))
10304 /* If SIGINT isn't blocked, don't let us be interrupted by
10305 another SIGINT, it might be harmful due to non-reentrancy
10306 in I/O functions. */
10307 sigblock (sigmask (SIGINT
));
10310 reset_sys_modes ();
10312 #ifdef SIGTSTP /* Support possible in later USG versions */
10314 * On systems which can suspend the current process and return to the original
10315 * shell, this command causes the user to end up back at the shell.
10316 * The "Auto-save" and "Abort" questions are not asked until
10317 * the user elects to return to emacs, at which point he can save the current
10318 * job and either dump core or continue.
10323 if (sys_suspend () == -1)
10325 printf ("Not running as a subprocess;\n");
10326 printf ("you can continue or abort.\n");
10328 #else /* not VMS */
10329 /* Perhaps should really fork an inferior shell?
10330 But that would not provide any way to get back
10331 to the original shell, ever. */
10332 printf ("No support for stopping a process on this operating system;\n");
10333 printf ("you can continue or abort.\n");
10334 #endif /* not VMS */
10335 #endif /* not SIGTSTP */
10337 /* We must remain inside the screen area when the internal terminal
10338 is used. Note that [Enter] is not echoed by dos. */
10341 /* It doesn't work to autosave while GC is in progress;
10342 the code used for auto-saving doesn't cope with the mark bit. */
10343 if (!gc_in_progress
)
10345 printf ("Auto-save? (y or n) ");
10347 if (((c
= getchar ()) & ~040) == 'Y')
10349 Fdo_auto_save (Qt
, Qnil
);
10351 printf ("\r\nAuto-save done");
10352 #else /* not MSDOS */
10353 printf ("Auto-save done\n");
10354 #endif /* not MSDOS */
10356 while (c
!= '\n') c
= getchar ();
10360 /* During GC, it must be safe to reenable quitting again. */
10361 Vinhibit_quit
= Qnil
;
10364 #endif /* not MSDOS */
10365 printf ("Garbage collection in progress; cannot auto-save now\r\n");
10366 printf ("but will instead do a real quit after garbage collection ends\r\n");
10371 printf ("\r\nAbort? (y or n) ");
10372 #else /* not MSDOS */
10374 printf ("Abort (and enter debugger)? (y or n) ");
10375 #else /* not VMS */
10376 printf ("Abort (and dump core)? (y or n) ");
10377 #endif /* not VMS */
10378 #endif /* not MSDOS */
10380 if (((c
= getchar ()) & ~040) == 'Y')
10382 while (c
!= '\n') c
= getchar ();
10384 printf ("\r\nContinuing...\r\n");
10385 #else /* not MSDOS */
10386 printf ("Continuing...\n");
10387 #endif /* not MSDOS */
10394 /* If executing a function that wants to be interrupted out of
10395 and the user has not deferred quitting by binding `inhibit-quit'
10396 then quit right away. */
10397 if (immediate_quit
&& NILP (Vinhibit_quit
))
10399 struct gl_state_s saved
;
10400 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
10402 immediate_quit
= 0;
10405 GCPRO4 (saved
.object
, saved
.global_code
,
10406 saved
.current_syntax_table
, saved
.old_prop
);
10407 Fsignal (Qquit
, Qnil
);
10412 /* Else request quit when it's safe */
10416 if (waiting_for_input
&& !echoing
)
10417 quit_throw_to_read_char ();
10422 /* Handle a C-g by making read_char return C-g. */
10425 quit_throw_to_read_char ()
10428 /* Prevent another signal from doing this before we finish. */
10429 clear_waiting_for_input ();
10432 Vunread_command_events
= Qnil
;
10433 unread_command_char
= -1;
10435 #if 0 /* Currently, sit_for is called from read_char without turning
10436 off polling. And that can call set_waiting_for_input.
10437 It seems to be harmless. */
10438 #ifdef POLL_FOR_INPUT
10439 /* May be > 1 if in recursive minibuffer. */
10440 if (poll_suppress_count
== 0)
10444 if (FRAMEP (internal_last_event_frame
)
10445 && !EQ (internal_last_event_frame
, selected_frame
))
10446 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
10449 _longjmp (getcjmp
, 1);
10452 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
10453 doc
: /* Set mode of reading keyboard input.
10454 First arg INTERRUPT non-nil means use input interrupts;
10455 nil means use CBREAK mode.
10456 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal
10457 (no effect except in CBREAK mode).
10458 Third arg META t means accept 8-bit input (for a Meta key).
10459 META nil means ignore the top bit, on the assumption it is parity.
10460 Otherwise, accept 8-bit input and don't use the top bit for Meta.
10461 Optional fourth arg QUIT if non-nil specifies character to use for quitting.
10462 See also `current-input-mode'. */)
10463 (interrupt
, flow
, meta
, quit
)
10464 Lisp_Object interrupt
, flow
, meta
, quit
;
10467 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
10468 error ("set-input-mode: QUIT must be an ASCII character");
10470 #ifdef POLL_FOR_INPUT
10475 /* this causes startup screen to be restored and messes with the mouse */
10476 reset_sys_modes ();
10480 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10481 if (read_socket_hook
)
10483 /* When using X, don't give the user a real choice,
10484 because we haven't implemented the mechanisms to support it. */
10485 #ifdef NO_SOCK_SIGIO
10486 interrupt_input
= 0;
10487 #else /* not NO_SOCK_SIGIO */
10488 interrupt_input
= 1;
10489 #endif /* NO_SOCK_SIGIO */
10492 interrupt_input
= !NILP (interrupt
);
10493 #else /* not SIGIO */
10494 interrupt_input
= 0;
10495 #endif /* not SIGIO */
10497 /* Our VMS input only works by interrupts, as of now. */
10499 interrupt_input
= 1;
10502 flow_control
= !NILP (flow
);
10505 else if (EQ (meta
, Qt
))
10510 /* Don't let this value be out of range. */
10511 quit_char
= XINT (quit
) & (meta_key
? 0377 : 0177);
10517 #ifdef POLL_FOR_INPUT
10518 poll_suppress_count
= 1;
10524 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
10525 doc
: /* Return information about the way Emacs currently reads keyboard input.
10526 The value is a list of the form (INTERRUPT FLOW META QUIT), where
10527 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if
10528 nil, Emacs is using CBREAK mode.
10529 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the
10530 terminal; this does not apply if Emacs uses interrupt-driven input.
10531 META is t if accepting 8-bit input with 8th bit as Meta flag.
10532 META nil means ignoring the top bit, on the assumption it is parity.
10533 META is neither t nor nil if accepting 8-bit input and using
10534 all 8 bits as the character code.
10535 QUIT is the character Emacs currently uses to quit.
10536 The elements of this list correspond to the arguments of
10537 `set-input-mode'. */)
10540 Lisp_Object val
[4];
10542 val
[0] = interrupt_input
? Qt
: Qnil
;
10543 val
[1] = flow_control
? Qt
: Qnil
;
10544 val
[2] = meta_key
== 2 ? make_number (0) : meta_key
== 1 ? Qt
: Qnil
;
10545 XSETFASTINT (val
[3], quit_char
);
10547 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
10550 DEFUN ("posn-at-x-y", Fposn_at_x_y
, Sposn_at_x_y
, 2, 4, 0,
10551 doc
: /* Return position information for pixel coordinates X and Y.
10552 By default, X and Y are relative to text area of the selected window.
10553 Optional third arg FRAME-OR-WINDOW non-nil specifies frame or window.
10554 If optional fourth arg WHOLE is non-nil, X is relative to the left
10555 edge of the window.
10557 The return value is similar to a mouse click position:
10558 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10559 IMAGE (DX . DY) (WIDTH . HEIGHT))
10560 The `posn-' functions access elements of such lists. */)
10561 (x
, y
, frame_or_window
, whole
)
10562 Lisp_Object x
, y
, frame_or_window
, whole
;
10567 if (NILP (frame_or_window
))
10568 frame_or_window
= selected_window
;
10570 if (WINDOWP (frame_or_window
))
10574 CHECK_LIVE_WINDOW (frame_or_window
);
10576 w
= XWINDOW (frame_or_window
);
10577 XSETINT (x
, (WINDOW_TO_FRAME_PIXEL_X (w
, XINT (x
))
10579 ? window_box_left_offset (w
, TEXT_AREA
)
10580 : - (WINDOW_LEFT_SCROLL_BAR_COLS (w
)
10581 * WINDOW_FRAME_COLUMN_WIDTH (w
)))));
10582 XSETINT (y
, WINDOW_TO_FRAME_PIXEL_Y (w
, XINT (y
)));
10583 frame_or_window
= w
->frame
;
10586 CHECK_LIVE_FRAME (frame_or_window
);
10588 return make_lispy_position (XFRAME (frame_or_window
), &x
, &y
, 0);
10591 DEFUN ("posn-at-point", Fposn_at_point
, Sposn_at_point
, 0, 2, 0,
10592 doc
: /* Return position information for buffer POS in WINDOW.
10593 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
10595 Return nil if position is not visible in window. Otherwise,
10596 the return value is similar to that returned by `event-start' for
10597 a mouse click at the upper left corner of the glyph corresponding
10598 to the given buffer position:
10599 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10600 IMAGE (DX . DY) (WIDTH . HEIGHT))
10601 The `posn-' functions access elements of such lists. */)
10603 Lisp_Object pos
, window
;
10607 tem
= Fpos_visible_in_window_p (pos
, window
, Qt
);
10609 tem
= Fposn_at_x_y (XCAR (tem
), XCAR (XCDR (tem
)), window
, Qnil
);
10615 * Set up a new kboard object with reasonable initial values.
10621 kb
->Voverriding_terminal_local_map
= Qnil
;
10622 kb
->Vlast_command
= Qnil
;
10623 kb
->Vreal_last_command
= Qnil
;
10624 kb
->Vprefix_arg
= Qnil
;
10625 kb
->Vlast_prefix_arg
= Qnil
;
10626 kb
->kbd_queue
= Qnil
;
10627 kb
->kbd_queue_has_data
= 0;
10628 kb
->immediate_echo
= 0;
10629 kb
->echo_string
= Qnil
;
10630 kb
->echo_after_prompt
= -1;
10631 kb
->kbd_macro_buffer
= 0;
10632 kb
->kbd_macro_bufsize
= 0;
10633 kb
->defining_kbd_macro
= Qnil
;
10634 kb
->Vlast_kbd_macro
= Qnil
;
10635 kb
->reference_count
= 0;
10636 kb
->Vsystem_key_alist
= Qnil
;
10637 kb
->system_key_syms
= Qnil
;
10638 kb
->Vdefault_minibuffer_frame
= Qnil
;
10642 * Destroy the contents of a kboard object, but not the object itself.
10643 * We use this just before deleting it, or if we're going to initialize
10644 * it a second time.
10650 if (kb
->kbd_macro_buffer
)
10651 xfree (kb
->kbd_macro_buffer
);
10654 #ifdef MULTI_KBOARD
10656 /* Free KB and memory referenced from it. */
10664 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
10667 *kbp
= kb
->next_kboard
;
10669 /* Prevent a dangling reference to KB. */
10670 if (kb
== current_kboard
10671 && FRAMEP (selected_frame
)
10672 && FRAME_LIVE_P (XFRAME (selected_frame
)))
10674 current_kboard
= XFRAME (selected_frame
)->kboard
;
10675 if (current_kboard
== kb
)
10683 #endif /* MULTI_KBOARD */
10688 /* This is correct before outermost invocation of the editor loop */
10689 command_loop_level
= -1;
10690 immediate_quit
= 0;
10691 quit_char
= Ctl ('g');
10692 Vunread_command_events
= Qnil
;
10693 unread_command_char
= -1;
10694 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
10696 recent_keys_index
= 0;
10697 kbd_fetch_ptr
= kbd_buffer
;
10698 kbd_store_ptr
= kbd_buffer
;
10700 do_mouse_tracking
= Qnil
;
10704 /* This means that command_loop_1 won't try to select anything the first
10706 internal_last_event_frame
= Qnil
;
10707 Vlast_event_frame
= internal_last_event_frame
;
10709 #ifdef MULTI_KBOARD
10710 current_kboard
= initial_kboard
;
10712 wipe_kboard (current_kboard
);
10713 init_kboard (current_kboard
);
10715 if (!noninteractive
&& !read_socket_hook
&& NILP (Vwindow_system
))
10717 signal (SIGINT
, interrupt_signal
);
10718 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
10719 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
10720 SIGQUIT and we can't tell which one it will give us. */
10721 signal (SIGQUIT
, interrupt_signal
);
10722 #endif /* HAVE_TERMIO */
10724 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10726 if (!noninteractive
)
10727 signal (SIGIO
, input_available_signal
);
10730 /* Use interrupt input by default, if it works and noninterrupt input
10731 has deficiencies. */
10733 #ifdef INTERRUPT_INPUT
10734 interrupt_input
= 1;
10736 interrupt_input
= 0;
10739 /* Our VMS input only works by interrupts, as of now. */
10741 interrupt_input
= 1;
10747 if (keyboard_init_hook
)
10748 (*keyboard_init_hook
) ();
10750 #ifdef POLL_FOR_INPUT
10751 poll_suppress_count
= 1;
10756 /* This type's only use is in syms_of_keyboard, to initialize the
10757 event header symbols and put properties on them. */
10758 struct event_head
{
10764 struct event_head head_table
[] = {
10765 {&Qmouse_movement
, "mouse-movement", &Qmouse_movement
},
10766 {&Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
},
10767 {&Qswitch_frame
, "switch-frame", &Qswitch_frame
},
10768 {&Qdelete_frame
, "delete-frame", &Qdelete_frame
},
10769 {&Qiconify_frame
, "iconify-frame", &Qiconify_frame
},
10770 {&Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
},
10771 /* `select-window' should be handled just like `switch-frame'
10772 in read_key_sequence. */
10773 {&Qselect_window
, "select-window", &Qswitch_frame
}
10777 syms_of_keyboard ()
10779 Vpre_help_message
= Qnil
;
10780 staticpro (&Vpre_help_message
);
10782 Vlispy_mouse_stem
= build_string ("mouse");
10783 staticpro (&Vlispy_mouse_stem
);
10786 QCimage
= intern (":image");
10787 staticpro (&QCimage
);
10789 staticpro (&Qhelp_echo
);
10790 Qhelp_echo
= intern ("help-echo");
10792 staticpro (&item_properties
);
10793 item_properties
= Qnil
;
10795 staticpro (&tool_bar_item_properties
);
10796 tool_bar_item_properties
= Qnil
;
10797 staticpro (&tool_bar_items_vector
);
10798 tool_bar_items_vector
= Qnil
;
10800 staticpro (&real_this_command
);
10801 real_this_command
= Qnil
;
10803 Qtimer_event_handler
= intern ("timer-event-handler");
10804 staticpro (&Qtimer_event_handler
);
10806 Qdisabled_command_function
= intern ("disabled-command-function");
10807 staticpro (&Qdisabled_command_function
);
10809 Qself_insert_command
= intern ("self-insert-command");
10810 staticpro (&Qself_insert_command
);
10812 Qforward_char
= intern ("forward-char");
10813 staticpro (&Qforward_char
);
10815 Qbackward_char
= intern ("backward-char");
10816 staticpro (&Qbackward_char
);
10818 Qdisabled
= intern ("disabled");
10819 staticpro (&Qdisabled
);
10821 Qundefined
= intern ("undefined");
10822 staticpro (&Qundefined
);
10824 Qpre_command_hook
= intern ("pre-command-hook");
10825 staticpro (&Qpre_command_hook
);
10827 Qpost_command_hook
= intern ("post-command-hook");
10828 staticpro (&Qpost_command_hook
);
10830 Qdeferred_action_function
= intern ("deferred-action-function");
10831 staticpro (&Qdeferred_action_function
);
10833 Qcommand_hook_internal
= intern ("command-hook-internal");
10834 staticpro (&Qcommand_hook_internal
);
10836 Qfunction_key
= intern ("function-key");
10837 staticpro (&Qfunction_key
);
10838 Qmouse_click
= intern ("mouse-click");
10839 staticpro (&Qmouse_click
);
10840 #if defined (WINDOWSNT) || defined (MAC_OS)
10841 Qlanguage_change
= intern ("language-change");
10842 staticpro (&Qlanguage_change
);
10844 Qdrag_n_drop
= intern ("drag-n-drop");
10845 staticpro (&Qdrag_n_drop
);
10847 Qsave_session
= intern ("save-session");
10848 staticpro (&Qsave_session
);
10850 Qusr1_signal
= intern ("usr1-signal");
10851 staticpro (&Qusr1_signal
);
10852 Qusr2_signal
= intern ("usr2-signal");
10853 staticpro (&Qusr2_signal
);
10855 Qmenu_enable
= intern ("menu-enable");
10856 staticpro (&Qmenu_enable
);
10857 Qmenu_alias
= intern ("menu-alias");
10858 staticpro (&Qmenu_alias
);
10859 QCenable
= intern (":enable");
10860 staticpro (&QCenable
);
10861 QCvisible
= intern (":visible");
10862 staticpro (&QCvisible
);
10863 QChelp
= intern (":help");
10864 staticpro (&QChelp
);
10865 QCfilter
= intern (":filter");
10866 staticpro (&QCfilter
);
10867 QCbutton
= intern (":button");
10868 staticpro (&QCbutton
);
10869 QCkeys
= intern (":keys");
10870 staticpro (&QCkeys
);
10871 QCkey_sequence
= intern (":key-sequence");
10872 staticpro (&QCkey_sequence
);
10873 QCtoggle
= intern (":toggle");
10874 staticpro (&QCtoggle
);
10875 QCradio
= intern (":radio");
10876 staticpro (&QCradio
);
10878 Qmode_line
= intern ("mode-line");
10879 staticpro (&Qmode_line
);
10880 Qvertical_line
= intern ("vertical-line");
10881 staticpro (&Qvertical_line
);
10882 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
10883 staticpro (&Qvertical_scroll_bar
);
10884 Qmenu_bar
= intern ("menu-bar");
10885 staticpro (&Qmenu_bar
);
10888 Qmouse_fixup_help_message
= intern ("mouse-fixup-help-message");
10889 staticpro (&Qmouse_fixup_help_message
);
10892 Qabove_handle
= intern ("above-handle");
10893 staticpro (&Qabove_handle
);
10894 Qhandle
= intern ("handle");
10895 staticpro (&Qhandle
);
10896 Qbelow_handle
= intern ("below-handle");
10897 staticpro (&Qbelow_handle
);
10898 Qup
= intern ("up");
10900 Qdown
= intern ("down");
10901 staticpro (&Qdown
);
10902 Qtop
= intern ("top");
10904 Qbottom
= intern ("bottom");
10905 staticpro (&Qbottom
);
10906 Qend_scroll
= intern ("end-scroll");
10907 staticpro (&Qend_scroll
);
10908 Qratio
= intern ("ratio");
10909 staticpro (&Qratio
);
10911 Qevent_kind
= intern ("event-kind");
10912 staticpro (&Qevent_kind
);
10913 Qevent_symbol_elements
= intern ("event-symbol-elements");
10914 staticpro (&Qevent_symbol_elements
);
10915 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
10916 staticpro (&Qevent_symbol_element_mask
);
10917 Qmodifier_cache
= intern ("modifier-cache");
10918 staticpro (&Qmodifier_cache
);
10920 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
10921 staticpro (&Qrecompute_lucid_menubar
);
10922 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
10923 staticpro (&Qactivate_menubar_hook
);
10925 Qpolling_period
= intern ("polling-period");
10926 staticpro (&Qpolling_period
);
10928 Qinput_method_function
= intern ("input-method-function");
10929 staticpro (&Qinput_method_function
);
10931 Qinput_method_exit_on_first_char
= intern ("input-method-exit-on-first-char");
10932 staticpro (&Qinput_method_exit_on_first_char
);
10933 Qinput_method_use_echo_area
= intern ("input-method-use-echo-area");
10934 staticpro (&Qinput_method_use_echo_area
);
10936 Fset (Qinput_method_exit_on_first_char
, Qnil
);
10937 Fset (Qinput_method_use_echo_area
, Qnil
);
10939 last_point_position_buffer
= Qnil
;
10942 struct event_head
*p
;
10944 for (p
= head_table
;
10945 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
10948 *p
->var
= intern (p
->name
);
10949 staticpro (p
->var
);
10950 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
10951 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
10955 button_down_location
= Fmake_vector (make_number (1), Qnil
);
10956 staticpro (&button_down_location
);
10957 mouse_syms
= Fmake_vector (make_number (1), Qnil
);
10958 staticpro (&mouse_syms
);
10959 wheel_syms
= Fmake_vector (make_number (2), Qnil
);
10960 staticpro (&wheel_syms
);
10964 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
10966 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
10967 for (i
= 0; i
< len
; i
++)
10968 if (modifier_names
[i
])
10969 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
10970 staticpro (&modifier_symbols
);
10973 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
10974 staticpro (&recent_keys
);
10976 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
10977 staticpro (&this_command_keys
);
10979 raw_keybuf
= Fmake_vector (make_number (30), Qnil
);
10980 staticpro (&raw_keybuf
);
10982 Qextended_command_history
= intern ("extended-command-history");
10983 Fset (Qextended_command_history
, Qnil
);
10984 staticpro (&Qextended_command_history
);
10986 accent_key_syms
= Qnil
;
10987 staticpro (&accent_key_syms
);
10989 func_key_syms
= Qnil
;
10990 staticpro (&func_key_syms
);
10992 drag_n_drop_syms
= Qnil
;
10993 staticpro (&drag_n_drop_syms
);
10995 unread_switch_frame
= Qnil
;
10996 staticpro (&unread_switch_frame
);
10998 internal_last_event_frame
= Qnil
;
10999 staticpro (&internal_last_event_frame
);
11001 read_key_sequence_cmd
= Qnil
;
11002 staticpro (&read_key_sequence_cmd
);
11004 menu_bar_one_keymap_changed_items
= Qnil
;
11005 staticpro (&menu_bar_one_keymap_changed_items
);
11007 menu_bar_items_vector
= Qnil
;
11008 staticpro (&menu_bar_items_vector
);
11010 defsubr (&Sevent_convert_list
);
11011 defsubr (&Sread_key_sequence
);
11012 defsubr (&Sread_key_sequence_vector
);
11013 defsubr (&Srecursive_edit
);
11015 defsubr (&Strack_mouse
);
11017 defsubr (&Sinput_pending_p
);
11018 defsubr (&Scommand_execute
);
11019 defsubr (&Srecent_keys
);
11020 defsubr (&Sthis_command_keys
);
11021 defsubr (&Sthis_command_keys_vector
);
11022 defsubr (&Sthis_single_command_keys
);
11023 defsubr (&Sthis_single_command_raw_keys
);
11024 defsubr (&Sreset_this_command_lengths
);
11025 defsubr (&Sclear_this_command_keys
);
11026 defsubr (&Ssuspend_emacs
);
11027 defsubr (&Sabort_recursive_edit
);
11028 defsubr (&Sexit_recursive_edit
);
11029 defsubr (&Srecursion_depth
);
11030 defsubr (&Stop_level
);
11031 defsubr (&Sdiscard_input
);
11032 defsubr (&Sopen_dribble_file
);
11033 defsubr (&Sset_input_mode
);
11034 defsubr (&Scurrent_input_mode
);
11035 defsubr (&Sexecute_extended_command
);
11036 defsubr (&Sposn_at_point
);
11037 defsubr (&Sposn_at_x_y
);
11039 DEFVAR_LISP ("last-command-char", &last_command_char
,
11040 doc
: /* Last input event that was part of a command. */);
11042 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
11043 doc
: /* Last input event that was part of a command. */);
11045 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
11046 doc
: /* Last input event in a command, except for mouse menu events.
11047 Mouse menus give back keys that don't look like mouse events;
11048 this variable holds the actual mouse event that led to the menu,
11049 so that you can determine whether the command was run by mouse or not. */);
11051 DEFVAR_LISP ("last-input-char", &last_input_char
,
11052 doc
: /* Last input event. */);
11054 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
11055 doc
: /* Last input event. */);
11057 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
11058 doc
: /* List of events to be read as the command input.
11059 These events are processed first, before actual keyboard input. */);
11060 Vunread_command_events
= Qnil
;
11062 DEFVAR_INT ("unread-command-char", &unread_command_char
,
11063 doc
: /* If not -1, an object to be read as next command input event. */);
11065 DEFVAR_LISP ("unread-post-input-method-events", &Vunread_post_input_method_events
,
11066 doc
: /* List of events to be processed as input by input methods.
11067 These events are processed after `unread-command-events', but
11068 before actual keyboard input. */);
11069 Vunread_post_input_method_events
= Qnil
;
11071 DEFVAR_LISP ("unread-input-method-events", &Vunread_input_method_events
,
11072 doc
: /* List of events to be processed as input by input methods.
11073 These events are processed after `unread-command-events', but
11074 before actual keyboard input. */);
11075 Vunread_input_method_events
= Qnil
;
11077 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
11078 doc
: /* Meta-prefix character code.
11079 Meta-foo as command input turns into this character followed by foo. */);
11080 XSETINT (meta_prefix_char
, 033);
11082 DEFVAR_KBOARD ("last-command", Vlast_command
,
11083 doc
: /* The last command executed.
11084 Normally a symbol with a function definition, but can be whatever was found
11085 in the keymap, or whatever the variable `this-command' was set to by that
11088 The value `mode-exit' is special; it means that the previous command
11089 read an event that told it to exit, and it did so and unread that event.
11090 In other words, the present command is the event that made the previous
11093 The value `kill-region' is special; it means that the previous command
11094 was a kill command. */);
11096 DEFVAR_KBOARD ("real-last-command", Vreal_last_command
,
11097 doc
: /* Same as `last-command', but never altered by Lisp code. */);
11099 DEFVAR_LISP ("this-command", &Vthis_command
,
11100 doc
: /* The command now being executed.
11101 The command can set this variable; whatever is put here
11102 will be in `last-command' during the following command. */);
11103 Vthis_command
= Qnil
;
11105 DEFVAR_LISP ("this-original-command", &Vthis_original_command
,
11106 doc
: /* The command bound to the current key sequence before remapping.
11107 It equals `this-command' if the original command was not remapped through
11108 any of the active keymaps. Otherwise, the value of `this-command' is the
11109 result of looking up the original command in the active keymaps. */);
11110 Vthis_original_command
= Qnil
;
11112 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
11113 doc
: /* *Number of input events between auto-saves.
11114 Zero means disable autosaving due to number of characters typed. */);
11115 auto_save_interval
= 300;
11117 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
11118 doc
: /* *Number of seconds idle time before auto-save.
11119 Zero or nil means disable auto-saving due to idleness.
11120 After auto-saving due to this many seconds of idle time,
11121 Emacs also does a garbage collection if that seems to be warranted. */);
11122 XSETFASTINT (Vauto_save_timeout
, 30);
11124 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes
,
11125 doc
: /* *Nonzero means echo unfinished commands after this many seconds of pause.
11126 The value may be integer or floating point. */);
11127 Vecho_keystrokes
= make_number (1);
11129 DEFVAR_INT ("polling-period", &polling_period
,
11130 doc
: /* *Interval between polling for input during Lisp execution.
11131 The reason for polling is to make C-g work to stop a running program.
11132 Polling is needed only when using X windows and SIGIO does not work.
11133 Polling is automatically disabled in all other cases. */);
11134 polling_period
= 2;
11136 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
11137 doc
: /* *Maximum time between mouse clicks to make a double-click.
11138 Measured in milliseconds. nil means disable double-click recognition;
11139 t means double-clicks have no time limit and are detected
11140 by position only. */);
11141 Vdouble_click_time
= make_number (500);
11143 DEFVAR_INT ("double-click-fuzz", &double_click_fuzz
,
11144 doc
: /* *Maximum mouse movement between clicks to make a double-click.
11145 On window-system frames, value is the number of pixels the mouse may have
11146 moved horizontally or vertically between two clicks to make a double-click.
11147 On non window-system frames, value is interpreted in units of 1/8 characters
11150 This variable is also the threshold for motion of the mouse
11151 to count as a drag. */);
11152 double_click_fuzz
= 3;
11154 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
11155 doc
: /* *Non-nil means inhibit local map menu bar menus. */);
11156 inhibit_local_menu_bar_menus
= 0;
11158 DEFVAR_INT ("num-input-keys", &num_input_keys
,
11159 doc
: /* Number of complete key sequences read as input so far.
11160 This includes key sequences read from keyboard macros.
11161 The number is effectively the number of interactive command invocations. */);
11162 num_input_keys
= 0;
11164 DEFVAR_INT ("num-nonmacro-input-events", &num_nonmacro_input_events
,
11165 doc
: /* Number of input events read from the keyboard so far.
11166 This does not include events generated by keyboard macros. */);
11167 num_nonmacro_input_events
= 0;
11169 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
11170 doc
: /* The frame in which the most recently read event occurred.
11171 If the last event came from a keyboard macro, this is set to `macro'. */);
11172 Vlast_event_frame
= Qnil
;
11174 /* This variable is set up in sysdep.c. */
11175 DEFVAR_LISP ("tty-erase-char", &Vtty_erase_char
,
11176 doc
: /* The ERASE character as set by the user with stty. */);
11178 DEFVAR_LISP ("help-char", &Vhelp_char
,
11179 doc
: /* Character to recognize as meaning Help.
11180 When it is read, do `(eval help-form)', and display result if it's a string.
11181 If the value of `help-form' is nil, this char can be read normally. */);
11182 XSETINT (Vhelp_char
, Ctl ('H'));
11184 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
11185 doc
: /* List of input events to recognize as meaning Help.
11186 These work just like the value of `help-char' (see that). */);
11187 Vhelp_event_list
= Qnil
;
11189 DEFVAR_LISP ("help-form", &Vhelp_form
,
11190 doc
: /* Form to execute when character `help-char' is read.
11191 If the form returns a string, that string is displayed.
11192 If `help-form' is nil, the help char is not recognized. */);
11195 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
11196 doc
: /* Command to run when `help-char' character follows a prefix key.
11197 This command is used only when there is no actual binding
11198 for that character after that prefix key. */);
11199 Vprefix_help_command
= Qnil
;
11201 DEFVAR_LISP ("top-level", &Vtop_level
,
11202 doc
: /* Form to evaluate when Emacs starts up.
11203 Useful to set before you dump a modified Emacs. */);
11206 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
11207 doc
: /* Translate table for keyboard input, or nil.
11208 If non-nil, the value should be a char-table. Each character read
11209 from the keyboard is looked up in this char-table. If the value found
11210 there is non-nil, then it is used instead of the actual input character.
11212 The value can also be a string or vector, but this is considered obsolete.
11213 If it is a string or vector of length N, character codes N and up are left
11214 untranslated. In a vector, an element which is nil means "no translation".
11216 This is applied to the characters supplied to input methods, not their
11217 output. See also `translation-table-for-input'. */);
11218 Vkeyboard_translate_table
= Qnil
;
11220 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
11221 doc
: /* Non-nil means to always spawn a subshell instead of suspending.
11222 \(Even if the operating system has support for stopping a process.\) */);
11223 cannot_suspend
= 0;
11225 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
11226 doc
: /* Non-nil means prompt with menus when appropriate.
11227 This is done when reading from a keymap that has a prompt string,
11228 for elements that have prompt strings.
11229 The menu is displayed on the screen
11230 if X menus were enabled at configuration
11231 time and the previous event was a mouse click prefix key.
11232 Otherwise, menu prompting uses the echo area. */);
11233 menu_prompting
= 1;
11235 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
11236 doc
: /* Character to see next line of menu prompt.
11237 Type this character while in a menu prompt to rotate around the lines of it. */);
11238 XSETINT (menu_prompt_more_char
, ' ');
11240 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
11241 doc
: /* A mask of additional modifier keys to use with every keyboard character.
11242 Emacs applies the modifiers of the character stored here to each keyboard
11243 character it reads. For example, after evaluating the expression
11244 (setq extra-keyboard-modifiers ?\\C-x)
11245 all input characters will have the control modifier applied to them.
11247 Note that the character ?\\C-@, equivalent to the integer zero, does
11248 not count as a control character; rather, it counts as a character
11249 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero
11250 cancels any modification. */);
11251 extra_keyboard_modifiers
= 0;
11253 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
11254 doc
: /* If an editing command sets this to t, deactivate the mark afterward.
11255 The command loop sets this to nil before each command,
11256 and tests the value when the command returns.
11257 Buffer modification stores t in this variable. */);
11258 Vdeactivate_mark
= Qnil
;
11260 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
11261 doc
: /* Temporary storage of pre-command-hook or post-command-hook. */);
11262 Vcommand_hook_internal
= Qnil
;
11264 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
11265 doc
: /* Normal hook run before each command is executed.
11266 If an unhandled error happens in running this hook,
11267 the hook value is set to nil, since otherwise the error
11268 might happen repeatedly and make Emacs nonfunctional. */);
11269 Vpre_command_hook
= Qnil
;
11271 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
11272 doc
: /* Normal hook run after each command is executed.
11273 If an unhandled error happens in running this hook,
11274 the hook value is set to nil, since otherwise the error
11275 might happen repeatedly and make Emacs nonfunctional. */);
11276 Vpost_command_hook
= Qnil
;
11279 DEFVAR_LISP ("echo-area-clear-hook", ...,
11280 doc
: /* Normal hook run when clearing the echo area. */);
11282 Qecho_area_clear_hook
= intern ("echo-area-clear-hook");
11283 staticpro (&Qecho_area_clear_hook
);
11284 SET_SYMBOL_VALUE (Qecho_area_clear_hook
, Qnil
);
11286 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
11287 doc
: /* Non-nil means menu bar, specified Lucid style, needs to be recomputed. */);
11288 Vlucid_menu_bar_dirty_flag
= Qnil
;
11290 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
11291 doc
: /* List of menu bar items to move to the end of the menu bar.
11292 The elements of the list are event types that may have menu bar bindings. */);
11293 Vmenu_bar_final_items
= Qnil
;
11295 DEFVAR_KBOARD ("overriding-terminal-local-map",
11296 Voverriding_terminal_local_map
,
11297 doc
: /* Per-terminal keymap that overrides all other local keymaps.
11298 If this variable is non-nil, it is used as a keymap instead of the
11299 buffer's local map, and the minor mode keymaps and text property keymaps.
11300 It also replaces `overriding-local-map'.
11302 This variable is intended to let commands such as `universal-argument'
11303 set up a different keymap for reading the next command. */);
11305 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
11306 doc
: /* Keymap that overrides all other local keymaps.
11307 If this variable is non-nil, it is used as a keymap--replacing the
11308 buffer's local map, the minor mode keymaps, and char property keymaps. */);
11309 Voverriding_local_map
= Qnil
;
11311 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
11312 doc
: /* Non-nil means `overriding-local-map' applies to the menu bar.
11313 Otherwise, the menu bar continues to reflect the buffer's local map
11314 and the minor mode maps regardless of `overriding-local-map'. */);
11315 Voverriding_local_map_menu_flag
= Qnil
;
11317 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
11318 doc
: /* Keymap defining bindings for special events to execute at low level. */);
11319 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
11321 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
11322 doc
: /* *Non-nil means generate motion events for mouse motion. */);
11324 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
11325 doc
: /* Alist of system-specific X windows key symbols.
11326 Each element should have the form (N . SYMBOL) where N is the
11327 numeric keysym code (sans the \"system-specific\" bit 1<<28)
11328 and SYMBOL is its name. */);
11330 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
11331 doc
: /* List of deferred actions to be performed at a later time.
11332 The precise format isn't relevant here; we just check whether it is nil. */);
11333 Vdeferred_action_list
= Qnil
;
11335 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
11336 doc
: /* Function to call to handle deferred actions, after each command.
11337 This function is called with no arguments after each command
11338 whenever `deferred-action-list' is non-nil. */);
11339 Vdeferred_action_function
= Qnil
;
11341 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
11342 doc
: /* *Non-nil means show the equivalent key-binding when M-x command has one.
11343 The value can be a length of time to show the message for.
11344 If the value is non-nil and not a number, we wait 2 seconds. */);
11345 Vsuggest_key_bindings
= Qt
;
11347 DEFVAR_LISP ("timer-list", &Vtimer_list
,
11348 doc
: /* List of active absolute time timers in order of increasing time. */);
11349 Vtimer_list
= Qnil
;
11351 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
11352 doc
: /* List of active idle-time timers in order of increasing time. */);
11353 Vtimer_idle_list
= Qnil
;
11355 DEFVAR_LISP ("input-method-function", &Vinput_method_function
,
11356 doc
: /* If non-nil, the function that implements the current input method.
11357 It's called with one argument, a printing character that was just read.
11358 \(That means a character with code 040...0176.)
11359 Typically this function uses `read-event' to read additional events.
11360 When it does so, it should first bind `input-method-function' to nil
11361 so it will not be called recursively.
11363 The function should return a list of zero or more events
11364 to be used as input. If it wants to put back some events
11365 to be reconsidered, separately, by the input method,
11366 it can add them to the beginning of `unread-command-events'.
11368 The input method function can find in `input-method-previous-method'
11369 the previous echo area message.
11371 The input method function should refer to the variables
11372 `input-method-use-echo-area' and `input-method-exit-on-first-char'
11373 for guidance on what to do. */);
11374 Vinput_method_function
= Qnil
;
11376 DEFVAR_LISP ("input-method-previous-message",
11377 &Vinput_method_previous_message
,
11378 doc
: /* When `input-method-function' is called, hold the previous echo area message.
11379 This variable exists because `read-event' clears the echo area
11380 before running the input method. It is nil if there was no message. */);
11381 Vinput_method_previous_message
= Qnil
;
11383 DEFVAR_LISP ("show-help-function", &Vshow_help_function
,
11384 doc
: /* If non-nil, the function that implements the display of help.
11385 It's called with one argument, the help string to display. */);
11386 Vshow_help_function
= Qnil
;
11388 DEFVAR_LISP ("disable-point-adjustment", &Vdisable_point_adjustment
,
11389 doc
: /* If non-nil, suppress point adjustment after executing a command.
11391 After a command is executed, if point is moved into a region that has
11392 special properties (e.g. composition, display), we adjust point to
11393 the boundary of the region. But, when a command sets this variable to
11394 non-nil, we suppress the point adjustment.
11396 This variable is set to nil before reading a command, and is checked
11397 just after executing the command. */);
11398 Vdisable_point_adjustment
= Qnil
;
11400 DEFVAR_LISP ("global-disable-point-adjustment",
11401 &Vglobal_disable_point_adjustment
,
11402 doc
: /* *If non-nil, always suppress point adjustment.
11404 The default value is nil, in which case, point adjustment are
11405 suppressed only after special commands that set
11406 `disable-point-adjustment' (which see) to non-nil. */);
11407 Vglobal_disable_point_adjustment
= Qnil
;
11409 DEFVAR_LISP ("minibuffer-message-timeout", &Vminibuffer_message_timeout
,
11410 doc
: /* *How long to display an echo-area message when the minibuffer is active.
11411 If the value is not a number, such messages don't time out. */);
11412 Vminibuffer_message_timeout
= make_number (2);
11414 DEFVAR_LISP ("throw-on-input", &Vthrow_on_input
,
11415 doc
: /* If non-nil, any keyboard input throws to this symbol.
11416 The value of that variable is passed to `quit-flag' and later causes a
11417 peculiar kind of quitting. */);
11418 Vthrow_on_input
= Qnil
;
11422 keys_of_keyboard ()
11424 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
11425 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
11426 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
11427 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
11428 initial_define_key (meta_map
, 'x', "execute-extended-command");
11430 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
11431 "handle-delete-frame");
11432 /* Here we used to use `ignore-event' which would simple set prefix-arg to
11433 current-prefix-arg, as is done in `handle-switch-frame'.
11434 But `handle-switch-frame is not run from the special-map.
11435 Commands from that map are run in a special way that automatically
11436 preserves the prefix-arg. Restoring the prefix arg here is not just
11437 redundant but harmful:
11439 - current-prefix-arg is set to non-nil, prefix-arg is set to nil.
11440 - after the first prompt, the exit-minibuffer-hook is run which may
11441 iconify a frame and thus push a `iconify-frame' event.
11442 - after running exit-minibuffer-hook, current-prefix-arg is
11443 restored to the non-nil value it had before the prompt.
11444 - we enter the second prompt.
11445 current-prefix-arg is non-nil, prefix-arg is nil.
11446 - before running the first real event, we run the special iconify-frame
11447 event, but we pass the `special' arg to execute-command so
11448 current-prefix-arg and prefix-arg are left untouched.
11449 - here we foolishly copy the non-nil current-prefix-arg to prefix-arg.
11450 - the next key event will have a spuriously non-nil current-prefix-arg. */
11451 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
11453 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",
11455 /* Handling it at such a low-level causes read_key_sequence to get
11456 * confused because it doesn't realize that the current_buffer was
11457 * changed by read_char.
11459 * initial_define_lispy_key (Vspecial_event_map, "select-window",
11460 * "handle-select-window"); */
11461 initial_define_lispy_key (Vspecial_event_map
, "save-session",
11462 "handle-save-session");
11465 /* Mark the pointers in the kboard objects.
11466 Called by the Fgarbage_collector. */
11472 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
11474 if (kb
->kbd_macro_buffer
)
11475 for (p
= kb
->kbd_macro_buffer
; p
< kb
->kbd_macro_ptr
; p
++)
11477 mark_object (kb
->Voverriding_terminal_local_map
);
11478 mark_object (kb
->Vlast_command
);
11479 mark_object (kb
->Vreal_last_command
);
11480 mark_object (kb
->Vprefix_arg
);
11481 mark_object (kb
->Vlast_prefix_arg
);
11482 mark_object (kb
->kbd_queue
);
11483 mark_object (kb
->defining_kbd_macro
);
11484 mark_object (kb
->Vlast_kbd_macro
);
11485 mark_object (kb
->Vsystem_key_alist
);
11486 mark_object (kb
->system_key_syms
);
11487 mark_object (kb
->Vdefault_minibuffer_frame
);
11488 mark_object (kb
->echo_string
);
11491 struct input_event
*event
;
11492 for (event
= kbd_fetch_ptr
; event
!= kbd_store_ptr
; event
++)
11494 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
11495 event
= kbd_buffer
;
11496 if (event
->kind
!= SELECTION_REQUEST_EVENT
11497 && event
->kind
!= SELECTION_CLEAR_EVENT
)
11499 mark_object (event
->x
);
11500 mark_object (event
->y
);
11502 mark_object (event
->frame_or_window
);
11503 mark_object (event
->arg
);
11508 /* arch-tag: 774e34d7-6d31-42f3-8397-e079a4e4c9ca
11509 (do not change this comment) */