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"
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 && (WIDTH_BY_CHAR_HEAD (FETCH_BYTE (PT_BYTE
)) == 1)
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
), 0, 0, 0);
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
)
2966 && CHAR_VALID_P (XINT (c
), 0)))
2969 d
= Faref (Vkeyboard_translate_table
, c
);
2970 /* nil in keyboard-translate-table means no translation. */
2976 /* If this event is a mouse click in the menu bar,
2977 return just menu-bar for now. Modify the mouse click event
2978 so we won't do this twice, then queue it up. */
2979 if (EVENT_HAS_PARAMETERS (c
)
2981 && CONSP (EVENT_START (c
))
2982 && CONSP (XCDR (EVENT_START (c
))))
2986 posn
= POSN_POSN (EVENT_START (c
));
2987 /* Handle menu-bar events:
2988 insert the dummy prefix event `menu-bar'. */
2989 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
2991 /* Change menu-bar to (menu-bar) as the event "position". */
2992 POSN_SET_POSN (EVENT_START (c
), Fcons (posn
, Qnil
));
2995 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
3000 /* Store these characters into recent_keys, the dribble file if any,
3001 and the keyboard macro being defined, if any. */
3003 if (! NILP (also_record
))
3004 record_char (also_record
);
3006 /* Wipe the echo area.
3007 But first, if we are about to use an input method,
3008 save the echo area contents for it to refer to. */
3010 && ! NILP (Vinput_method_function
)
3011 && (unsigned) XINT (c
) >= ' '
3012 && (unsigned) XINT (c
) != 127
3013 && (unsigned) XINT (c
) < 256)
3015 previous_echo_area_message
= Fcurrent_message ();
3016 Vinput_method_previous_message
= previous_echo_area_message
;
3019 /* Now wipe the echo area, except for help events which do their
3020 own stuff with the echo area. */
3022 || (!(EQ (Qhelp_echo
, XCAR (c
)))
3023 && !(EQ (Qswitch_frame
, XCAR (c
)))))
3025 if (!NILP (echo_area_buffer
[0]))
3026 safe_run_hooks (Qecho_area_clear_hook
);
3027 clear_message (1, 0);
3030 reread_for_input_method
:
3032 /* Pass this to the input method, if appropriate. */
3034 && ! NILP (Vinput_method_function
)
3035 /* Don't run the input method within a key sequence,
3036 after the first event of the key sequence. */
3037 && NILP (prev_event
)
3038 && (unsigned) XINT (c
) >= ' '
3039 && (unsigned) XINT (c
) != 127
3040 && (unsigned) XINT (c
) < 256)
3043 int key_count
, key_count_reset
;
3044 struct gcpro gcpro1
;
3045 int count
= SPECPDL_INDEX ();
3047 /* Save the echo status. */
3048 int saved_immediate_echo
= current_kboard
->immediate_echo
;
3049 struct kboard
*saved_ok_to_echo
= ok_to_echo_at_next_pause
;
3050 Lisp_Object saved_echo_string
= current_kboard
->echo_string
;
3051 int saved_echo_after_prompt
= current_kboard
->echo_after_prompt
;
3054 if (before_command_restore_flag
)
3056 this_command_key_count
= before_command_key_count_1
;
3057 if (this_command_key_count
< this_single_command_key_start
)
3058 this_single_command_key_start
= this_command_key_count
;
3059 echo_truncate (before_command_echo_length_1
);
3060 before_command_restore_flag
= 0;
3064 /* Save the this_command_keys status. */
3065 key_count
= this_command_key_count
;
3066 key_count_reset
= this_command_key_count_reset
;
3069 keys
= Fcopy_sequence (this_command_keys
);
3074 /* Clear out this_command_keys. */
3075 this_command_key_count
= 0;
3076 this_command_key_count_reset
= 0;
3078 /* Now wipe the echo area. */
3079 if (!NILP (echo_area_buffer
[0]))
3080 safe_run_hooks (Qecho_area_clear_hook
);
3081 clear_message (1, 0);
3084 /* If we are not reading a key sequence,
3085 never use the echo area. */
3088 specbind (Qinput_method_use_echo_area
, Qt
);
3091 /* Call the input method. */
3092 tem
= call1 (Vinput_method_function
, c
);
3094 tem
= unbind_to (count
, tem
);
3096 /* Restore the saved echoing state
3097 and this_command_keys state. */
3098 this_command_key_count
= key_count
;
3099 this_command_key_count_reset
= key_count_reset
;
3101 this_command_keys
= keys
;
3104 ok_to_echo_at_next_pause
= saved_ok_to_echo
;
3105 current_kboard
->echo_string
= saved_echo_string
;
3106 current_kboard
->echo_after_prompt
= saved_echo_after_prompt
;
3107 if (saved_immediate_echo
)
3112 /* The input method can return no events. */
3115 /* Bring back the previous message, if any. */
3116 if (! NILP (previous_echo_area_message
))
3117 message_with_string ("%s", previous_echo_area_message
, 0);
3120 /* It returned one event or more. */
3122 Vunread_post_input_method_events
3123 = nconc2 (XCDR (tem
), Vunread_post_input_method_events
);
3128 /* Display help if not echoing. */
3129 if (CONSP (c
) && EQ (XCAR (c
), Qhelp_echo
))
3131 /* (help-echo FRAME HELP WINDOW OBJECT POS). */
3132 Lisp_Object help
, object
, position
, window
, tem
;
3134 tem
= Fcdr (XCDR (c
));
3137 window
= Fcar (tem
);
3139 object
= Fcar (tem
);
3141 position
= Fcar (tem
);
3143 show_help_echo (help
, window
, object
, position
, 0);
3145 /* We stopped being idle for this event; undo that. */
3146 timer_resume_idle ();
3150 if (! reread
|| this_command_key_count
== 0
3151 || this_command_key_count_reset
)
3154 /* Don't echo mouse motion events. */
3155 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3156 && NILP (Fzerop (Vecho_keystrokes
))
3157 && ! (EVENT_HAS_PARAMETERS (c
)
3158 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
3161 if (! NILP (also_record
))
3162 echo_char (also_record
);
3163 /* Once we reread a character, echoing can happen
3164 the next time we pause to read a new one. */
3165 ok_to_echo_at_next_pause
= current_kboard
;
3168 /* Record this character as part of the current key. */
3169 add_command_key (c
);
3170 if (! NILP (also_record
))
3171 add_command_key (also_record
);
3174 last_input_char
= c
;
3177 /* Process the help character specially if enabled */
3178 if (!NILP (Vhelp_form
) && help_char_p (c
))
3181 count
= SPECPDL_INDEX ();
3183 record_unwind_protect (Fset_window_configuration
,
3184 Fcurrent_window_configuration (Qnil
));
3186 tem0
= Feval (Vhelp_form
);
3188 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
3192 c
= read_char (0, 0, 0, Qnil
, 0);
3193 while (BUFFERP (c
));
3194 /* Remove the help from the frame */
3195 unbind_to (count
, Qnil
);
3198 if (EQ (c
, make_number (040)))
3202 c
= read_char (0, 0, 0, Qnil
, 0);
3203 while (BUFFERP (c
));
3212 /* Record a key that came from a mouse menu.
3213 Record it for echoing, for this-command-keys, and so on. */
3219 /* Wipe the echo area. */
3220 clear_message (1, 0);
3225 before_command_key_count
= this_command_key_count
;
3226 before_command_echo_length
= echo_length ();
3229 /* Don't echo mouse motion events. */
3230 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3231 && NILP (Fzerop (Vecho_keystrokes
)))
3235 /* Once we reread a character, echoing can happen
3236 the next time we pause to read a new one. */
3237 ok_to_echo_at_next_pause
= 0;
3240 /* Record this character as part of the current key. */
3241 add_command_key (c
);
3243 /* Re-reading in the middle of a command */
3244 last_input_char
= c
;
3248 /* Return 1 if should recognize C as "the help character". */
3256 if (EQ (c
, Vhelp_char
))
3258 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCDR (tail
))
3259 if (EQ (c
, XCAR (tail
)))
3264 /* Record the input event C in various ways. */
3272 if (CONSP (c
) && (EQ (XCAR (c
), Qhelp_echo
) || EQ (XCAR (c
), Qmouse_movement
)))
3274 /* To avoid filling recent_keys with help-echo and mouse-movement
3275 events, we filter out repeated help-echo events, only store the
3276 first and last in a series of mouse-movement events, and don't
3277 store repeated help-echo events which are only separated by
3278 mouse-movement events. */
3280 Lisp_Object ev1
, ev2
, ev3
;
3283 if ((ix1
= recent_keys_index
- 1) < 0)
3284 ix1
= NUM_RECENT_KEYS
- 1;
3285 ev1
= AREF (recent_keys
, ix1
);
3287 if ((ix2
= ix1
- 1) < 0)
3288 ix2
= NUM_RECENT_KEYS
- 1;
3289 ev2
= AREF (recent_keys
, ix2
);
3291 if ((ix3
= ix2
- 1) < 0)
3292 ix3
= NUM_RECENT_KEYS
- 1;
3293 ev3
= AREF (recent_keys
, ix3
);
3295 if (EQ (XCAR (c
), Qhelp_echo
))
3297 /* Don't record `help-echo' in recent_keys unless it shows some help
3298 message, and a different help than the previously recorded
3300 Lisp_Object help
, last_help
;
3302 help
= Fcar_safe (Fcdr_safe (XCDR (c
)));
3303 if (!STRINGP (help
))
3305 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qhelp_echo
)
3306 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev1
))), EQ (last_help
, help
)))
3308 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3309 && CONSP (ev2
) && EQ (XCAR (ev2
), Qhelp_echo
)
3310 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev2
))), EQ (last_help
, help
)))
3312 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3313 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3314 && CONSP (ev3
) && EQ (XCAR (ev3
), Qhelp_echo
)
3315 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev3
))), EQ (last_help
, help
)))
3318 else if (EQ (XCAR (c
), Qmouse_movement
))
3320 /* Only record one pair of `mouse-movement' on a window in recent_keys.
3321 So additional mouse movement events replace the last element. */
3322 Lisp_Object last_window
, window
;
3324 window
= Fcar_safe (Fcar_safe (XCDR (c
)));
3325 if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3326 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev1
))), EQ (last_window
, window
))
3327 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3328 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev2
))), EQ (last_window
, window
)))
3330 ASET (recent_keys
, ix1
, c
);
3336 store_kbd_macro_char (c
);
3341 ASET (recent_keys
, recent_keys_index
, c
);
3342 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
3343 recent_keys_index
= 0;
3345 else if (recorded
< 0)
3347 /* We need to remove one or two events from recent_keys.
3348 To do this, we simply put nil at those events and move the
3349 recent_keys_index backwards over those events. Usually,
3350 users will never see those nil events, as they will be
3351 overwritten by the command keys entered to see recent_keys
3354 while (recorded
++ < 0 && total_keys
> 0)
3356 if (total_keys
< NUM_RECENT_KEYS
)
3358 if (--recent_keys_index
< 0)
3359 recent_keys_index
= NUM_RECENT_KEYS
- 1;
3360 ASET (recent_keys
, recent_keys_index
, Qnil
);
3364 num_nonmacro_input_events
++;
3366 /* Write c to the dribble file. If c is a lispy event, write
3367 the event's symbol to the dribble file, in <brackets>. Bleaugh.
3368 If you, dear reader, have a better idea, you've got the source. :-) */
3373 if (XUINT (c
) < 0x100)
3374 putc (XINT (c
), dribble
);
3376 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
3380 Lisp_Object dribblee
;
3382 /* If it's a structured event, take the event header. */
3383 dribblee
= EVENT_HEAD (c
);
3385 if (SYMBOLP (dribblee
))
3387 putc ('<', dribble
);
3388 fwrite (SDATA (SYMBOL_NAME (dribblee
)), sizeof (char),
3389 SBYTES (SYMBOL_NAME (dribblee
)),
3391 putc ('>', dribble
);
3403 struct buffer
*old
= current_buffer
;
3404 Fprinc (object
, Qnil
);
3405 set_buffer_internal (XBUFFER (Vstandard_output
));
3406 call0 (intern ("help-mode"));
3407 set_buffer_internal (old
);
3411 /* Copy out or in the info on where C-g should throw to.
3412 This is used when running Lisp code from within get_char,
3413 in case get_char is called recursively.
3414 See read_process_output. */
3420 bcopy (getcjmp
, temp
, sizeof getcjmp
);
3424 restore_getcjmp (temp
)
3427 bcopy (temp
, getcjmp
, sizeof getcjmp
);
3432 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
3433 of this function. */
3436 tracking_off (old_value
)
3437 Lisp_Object old_value
;
3439 do_mouse_tracking
= old_value
;
3440 if (NILP (old_value
))
3442 /* Redisplay may have been preempted because there was input
3443 available, and it assumes it will be called again after the
3444 input has been processed. If the only input available was
3445 the sort that we have just disabled, then we need to call
3447 if (!readable_events (READABLE_EVENTS_DO_TIMERS_NOW
))
3449 redisplay_preserve_echo_area (6);
3450 get_input_pending (&input_pending
,
3451 READABLE_EVENTS_DO_TIMERS_NOW
);
3457 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
3458 doc
: /* Evaluate BODY with mouse movement events enabled.
3459 Within a `track-mouse' form, mouse motion generates input events that
3460 you can read with `read-event'.
3461 Normally, mouse motion is ignored.
3462 usage: (track-mouse BODY ...) */)
3466 int count
= SPECPDL_INDEX ();
3469 record_unwind_protect (tracking_off
, do_mouse_tracking
);
3471 do_mouse_tracking
= Qt
;
3473 val
= Fprogn (args
);
3474 return unbind_to (count
, val
);
3477 /* If mouse has moved on some frame, return one of those frames.
3478 Return 0 otherwise. */
3483 Lisp_Object tail
, frame
;
3485 FOR_EACH_FRAME (tail
, frame
)
3487 if (XFRAME (frame
)->mouse_moved
)
3488 return XFRAME (frame
);
3494 #endif /* HAVE_MOUSE */
3496 /* Low level keyboard/mouse input.
3497 kbd_buffer_store_event places events in kbd_buffer, and
3498 kbd_buffer_get_event retrieves them. */
3500 /* Return true iff there are any events in the queue that read-char
3501 would return. If this returns false, a read-char would block. */
3503 readable_events (flags
)
3506 if (flags
& READABLE_EVENTS_DO_TIMERS_NOW
)
3509 /* If the buffer contains only FOCUS_IN_EVENT events, and
3510 READABLE_EVENTS_FILTER_EVENTS is set, report it as empty. */
3511 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3513 if (flags
& (READABLE_EVENTS_FILTER_EVENTS
3514 #ifdef USE_TOOLKIT_SCROLL_BARS
3515 | READABLE_EVENTS_IGNORE_SQUEEZABLES
3519 struct input_event
*event
;
3521 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3528 #ifdef USE_TOOLKIT_SCROLL_BARS
3529 (flags
& READABLE_EVENTS_FILTER_EVENTS
) &&
3531 event
->kind
== FOCUS_IN_EVENT
)
3532 #ifdef USE_TOOLKIT_SCROLL_BARS
3533 && !((flags
& READABLE_EVENTS_IGNORE_SQUEEZABLES
)
3534 && event
->kind
== SCROLL_BAR_CLICK_EVENT
3535 && event
->part
== scroll_bar_handle
3536 && event
->modifiers
== 0)
3541 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3544 while (event
!= kbd_store_ptr
);
3551 if (!(flags
& READABLE_EVENTS_IGNORE_SQUEEZABLES
)
3552 && !NILP (do_mouse_tracking
) && some_mouse_moved ())
3557 if (current_kboard
->kbd_queue_has_data
)
3563 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
3564 if (kb
->kbd_queue_has_data
)
3570 /* Set this for debugging, to have a way to get out */
3575 event_to_kboard (event
)
3576 struct input_event
*event
;
3579 frame
= event
->frame_or_window
;
3581 frame
= XCAR (frame
);
3582 else if (WINDOWP (frame
))
3583 frame
= WINDOW_FRAME (XWINDOW (frame
));
3585 /* There are still some events that don't set this field.
3586 For now, just ignore the problem.
3587 Also ignore dead frames here. */
3588 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
3591 return FRAME_KBOARD (XFRAME (frame
));
3596 Lisp_Object Vthrow_on_input
;
3598 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
3601 kbd_buffer_store_event (event
)
3602 register struct input_event
*event
;
3604 kbd_buffer_store_event_hold (event
, 0);
3607 /* Store EVENT obtained at interrupt level into kbd_buffer, fifo.
3609 If HOLD_QUIT is 0, just stuff EVENT into the fifo.
3610 Else, if HOLD_QUIT.kind != NO_EVENT, discard EVENT.
3611 Else, if EVENT is a quit event, store the quit event
3612 in HOLD_QUIT, and return (thus ignoring further events).
3614 This is used in read_avail_input to postpone the processing
3615 of the quit event until all subsequent input events have been
3616 parsed (and discarded).
3620 kbd_buffer_store_event_hold (event
, hold_quit
)
3621 register struct input_event
*event
;
3622 struct input_event
*hold_quit
;
3624 if (event
->kind
== NO_EVENT
)
3627 if (hold_quit
&& hold_quit
->kind
!= NO_EVENT
)
3630 if (event
->kind
== ASCII_KEYSTROKE_EVENT
)
3632 register int c
= event
->code
& 0377;
3634 if (event
->modifiers
& ctrl_modifier
)
3635 c
= make_ctrl_char (c
);
3637 c
|= (event
->modifiers
3638 & (meta_modifier
| alt_modifier
3639 | hyper_modifier
| super_modifier
));
3645 struct input_event
*sp
;
3648 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
3649 kb
!= current_kboard
))
3652 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
3653 Fcons (make_number (c
), Qnil
));
3654 kb
->kbd_queue_has_data
= 1;
3655 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3657 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3660 if (event_to_kboard (sp
) == kb
)
3662 sp
->kind
= NO_EVENT
;
3663 sp
->frame_or_window
= Qnil
;
3673 bcopy (event
, (char *) hold_quit
, sizeof (*event
));
3677 /* If this results in a quit_char being returned to Emacs as
3678 input, set Vlast_event_frame properly. If this doesn't
3679 get returned to Emacs as an event, the next event read
3680 will set Vlast_event_frame again, so this is safe to do. */
3684 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
3686 focus
= event
->frame_or_window
;
3687 internal_last_event_frame
= focus
;
3688 Vlast_event_frame
= focus
;
3691 last_event_timestamp
= event
->timestamp
;
3692 interrupt_signal (0 /* dummy */);
3696 if (c
&& c
== stop_character
)
3702 /* Don't insert two BUFFER_SWITCH_EVENT's in a row.
3703 Just ignore the second one. */
3704 else if (event
->kind
== BUFFER_SWITCH_EVENT
3705 && kbd_fetch_ptr
!= kbd_store_ptr
3706 && ((kbd_store_ptr
== kbd_buffer
3707 ? kbd_buffer
+ KBD_BUFFER_SIZE
- 1
3708 : kbd_store_ptr
- 1)->kind
) == BUFFER_SWITCH_EVENT
)
3711 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
3712 kbd_store_ptr
= kbd_buffer
;
3714 /* Don't let the very last slot in the buffer become full,
3715 since that would make the two pointers equal,
3716 and that is indistinguishable from an empty buffer.
3717 Discard the event if it would fill the last slot. */
3718 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3720 *kbd_store_ptr
= *event
;
3724 /* If we're inside while-no-input, and this event qualifies
3725 as input, set quit-flag to cause an interrupt. */
3726 if (!NILP (Vthrow_on_input
)
3727 && event
->kind
!= FOCUS_IN_EVENT
3728 && event
->kind
!= HELP_EVENT
3729 && event
->kind
!= DEICONIFY_EVENT
)
3731 Vquit_flag
= Vthrow_on_input
;
3732 /* If we're inside a function that wants immediate quits,
3734 if (immediate_quit
&& NILP (Vinhibit_quit
))
3744 /* Put an input event back in the head of the event queue. */
3747 kbd_buffer_unget_event (event
)
3748 register struct input_event
*event
;
3750 if (kbd_fetch_ptr
== kbd_buffer
)
3751 kbd_fetch_ptr
= kbd_buffer
+ KBD_BUFFER_SIZE
;
3753 /* Don't let the very last slot in the buffer become full, */
3754 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3757 *kbd_fetch_ptr
= *event
;
3762 /* Generate HELP_EVENT input_events in BUFP which has room for
3763 SIZE events. If there's not enough room in BUFP, ignore this
3766 HELP is the help form.
3768 FRAME is the frame on which the help is generated. OBJECT is the
3769 Lisp object where the help was found (a buffer, a string, an
3770 overlay, or nil if neither from a string nor from a buffer. POS is
3771 the position within OBJECT where the help was found.
3773 Value is the number of input_events generated. */
3776 gen_help_event (help
, frame
, window
, object
, pos
)
3777 Lisp_Object help
, frame
, object
, window
;
3780 struct input_event event
;
3784 event
.kind
= HELP_EVENT
;
3785 event
.frame_or_window
= frame
;
3787 event
.x
= WINDOWP (window
) ? window
: frame
;
3790 kbd_buffer_store_event (&event
);
3794 /* Store HELP_EVENTs for HELP on FRAME in the input queue. */
3797 kbd_buffer_store_help_event (frame
, help
)
3798 Lisp_Object frame
, help
;
3800 struct input_event event
;
3802 event
.kind
= HELP_EVENT
;
3803 event
.frame_or_window
= frame
;
3808 kbd_buffer_store_event (&event
);
3812 /* Discard any mouse events in the event buffer by setting them to
3815 discard_mouse_events ()
3817 struct input_event
*sp
;
3818 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3820 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3823 if (sp
->kind
== MOUSE_CLICK_EVENT
3824 || sp
->kind
== WHEEL_EVENT
3826 || sp
->kind
== W32_SCROLL_BAR_CLICK_EVENT
3828 || sp
->kind
== SCROLL_BAR_CLICK_EVENT
)
3830 sp
->kind
= NO_EVENT
;
3836 /* Return non-zero if there are any real events waiting in the event
3837 buffer, not counting `NO_EVENT's.
3839 If DISCARD is non-zero, discard NO_EVENT events at the front of
3840 the input queue, possibly leaving the input queue empty if there
3841 are no real input events. */
3844 kbd_buffer_events_waiting (discard
)
3847 struct input_event
*sp
;
3849 for (sp
= kbd_fetch_ptr
;
3850 sp
!= kbd_store_ptr
&& sp
->kind
== NO_EVENT
;
3853 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3860 return sp
!= kbd_store_ptr
&& sp
->kind
!= NO_EVENT
;
3864 /* Clear input event EVENT. */
3868 struct input_event
*event
;
3870 event
->kind
= NO_EVENT
;
3874 /* Read one event from the event buffer, waiting if necessary.
3875 The value is a Lisp object representing the event.
3876 The value is nil for an event that should be ignored,
3877 or that was handled here.
3878 We always read and discard one event. */
3881 kbd_buffer_get_event (kbp
, used_mouse_menu
)
3883 int *used_mouse_menu
;
3892 *kbp
= current_kboard
;
3896 /* Wait until there is input available. */
3899 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3902 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3906 /* If the quit flag is set, then read_char will return
3907 quit_char, so that counts as "available input." */
3908 if (!NILP (Vquit_flag
))
3909 quit_throw_to_read_char ();
3911 /* One way or another, wait until input is available; then, if
3912 interrupt handlers have not read it, read it now. */
3915 wait_for_kbd_input ();
3917 /* Note SIGIO has been undef'd if FIONREAD is missing. */
3921 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3924 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3928 wait_reading_process_output (0, 0, -1, 1, Qnil
, NULL
, 0);
3930 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
3931 /* Pass 1 for EXPECT since we just waited to have input. */
3932 read_avail_input (1);
3934 #endif /* not VMS */
3937 if (CONSP (Vunread_command_events
))
3940 first
= XCAR (Vunread_command_events
);
3941 Vunread_command_events
= XCDR (Vunread_command_events
);
3942 *kbp
= current_kboard
;
3946 /* At this point, we know that there is a readable event available
3947 somewhere. If the event queue is empty, then there must be a
3948 mouse movement enabled and available. */
3949 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3951 struct input_event
*event
;
3953 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3957 last_event_timestamp
= event
->timestamp
;
3960 *kbp
= event_to_kboard (event
);
3962 *kbp
= current_kboard
; /* Better than returning null ptr? */
3964 *kbp
= &the_only_kboard
;
3969 /* These two kinds of events get special handling
3970 and don't actually appear to the command loop.
3971 We return nil for them. */
3972 if (event
->kind
== SELECTION_REQUEST_EVENT
3973 || event
->kind
== SELECTION_CLEAR_EVENT
)
3976 struct input_event copy
;
3978 /* Remove it from the buffer before processing it,
3979 since otherwise swallow_events will see it
3980 and process it again. */
3982 kbd_fetch_ptr
= event
+ 1;
3983 input_pending
= readable_events (0);
3984 x_handle_selection_event (©
);
3986 /* We're getting selection request events, but we don't have
3992 #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS)
3993 else if (event
->kind
== DELETE_WINDOW_EVENT
)
3995 /* Make an event (delete-frame (FRAME)). */
3996 obj
= Fcons (event
->frame_or_window
, Qnil
);
3997 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
3998 kbd_fetch_ptr
= event
+ 1;
4001 #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS)
4002 else if (event
->kind
== ICONIFY_EVENT
)
4004 /* Make an event (iconify-frame (FRAME)). */
4005 obj
= Fcons (event
->frame_or_window
, Qnil
);
4006 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
4007 kbd_fetch_ptr
= event
+ 1;
4009 else if (event
->kind
== DEICONIFY_EVENT
)
4011 /* Make an event (make-frame-visible (FRAME)). */
4012 obj
= Fcons (event
->frame_or_window
, Qnil
);
4013 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
4014 kbd_fetch_ptr
= event
+ 1;
4017 else if (event
->kind
== BUFFER_SWITCH_EVENT
)
4019 /* The value doesn't matter here; only the type is tested. */
4020 XSETBUFFER (obj
, current_buffer
);
4021 kbd_fetch_ptr
= event
+ 1;
4023 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
4024 || defined (USE_GTK)
4025 else if (event
->kind
== MENU_BAR_ACTIVATE_EVENT
)
4027 kbd_fetch_ptr
= event
+ 1;
4028 input_pending
= readable_events (0);
4029 if (FRAME_LIVE_P (XFRAME (event
->frame_or_window
)))
4030 x_activate_menubar (XFRAME (event
->frame_or_window
));
4033 #if defined (WINDOWSNT) || defined (MAC_OS)
4034 else if (event
->kind
== LANGUAGE_CHANGE_EVENT
)
4037 /* Make an event (language-change (KEY_SCRIPT)). */
4038 obj
= Fcons (make_number (event
->code
), Qnil
);
4040 /* Make an event (language-change (FRAME CHARSET LCID)). */
4041 obj
= Fcons (event
->frame_or_window
, Qnil
);
4043 obj
= Fcons (Qlanguage_change
, Fcons (obj
, Qnil
));
4044 kbd_fetch_ptr
= event
+ 1;
4047 else if (event
->kind
== SAVE_SESSION_EVENT
)
4049 obj
= Fcons (Qsave_session
, Qnil
);
4050 kbd_fetch_ptr
= event
+ 1;
4052 /* Just discard these, by returning nil.
4053 With MULTI_KBOARD, these events are used as placeholders
4054 when we need to randomly delete events from the queue.
4055 (They shouldn't otherwise be found in the buffer,
4056 but on some machines it appears they do show up
4057 even without MULTI_KBOARD.) */
4058 /* On Windows NT/9X, NO_EVENT is used to delete extraneous
4059 mouse events during a popup-menu call. */
4060 else if (event
->kind
== NO_EVENT
)
4061 kbd_fetch_ptr
= event
+ 1;
4062 else if (event
->kind
== HELP_EVENT
)
4064 Lisp_Object object
, position
, help
, frame
, window
;
4066 frame
= event
->frame_or_window
;
4067 object
= event
->arg
;
4068 position
= make_number (event
->code
);
4071 clear_event (event
);
4073 kbd_fetch_ptr
= event
+ 1;
4074 if (!WINDOWP (window
))
4076 obj
= Fcons (Qhelp_echo
,
4077 list5 (frame
, help
, window
, object
, position
));
4079 else if (event
->kind
== FOCUS_IN_EVENT
)
4081 /* Notification of a FocusIn event. The frame receiving the
4082 focus is in event->frame_or_window. Generate a
4083 switch-frame event if necessary. */
4084 Lisp_Object frame
, focus
;
4086 frame
= event
->frame_or_window
;
4087 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4091 if (!EQ (frame
, internal_last_event_frame
)
4092 && !EQ (frame
, selected_frame
))
4093 obj
= make_lispy_switch_frame (frame
);
4094 internal_last_event_frame
= frame
;
4095 kbd_fetch_ptr
= event
+ 1;
4099 /* If this event is on a different frame, return a switch-frame this
4100 time, and leave the event in the queue for next time. */
4104 frame
= event
->frame_or_window
;
4106 frame
= XCAR (frame
);
4107 else if (WINDOWP (frame
))
4108 frame
= WINDOW_FRAME (XWINDOW (frame
));
4110 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4114 if (! EQ (frame
, internal_last_event_frame
)
4115 && !EQ (frame
, selected_frame
))
4116 obj
= make_lispy_switch_frame (frame
);
4117 internal_last_event_frame
= frame
;
4119 /* If we didn't decide to make a switch-frame event, go ahead
4120 and build a real event from the queue entry. */
4124 obj
= make_lispy_event (event
);
4126 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined(MAC_OS) \
4127 || defined (USE_GTK)
4128 /* If this was a menu selection, then set the flag to inhibit
4129 writing to last_nonmenu_event. Don't do this if the event
4130 we're returning is (menu-bar), though; that indicates the
4131 beginning of the menu sequence, and we might as well leave
4132 that as the `event with parameters' for this selection. */
4134 && !EQ (event
->frame_or_window
, event
->arg
)
4135 && (event
->kind
== MENU_BAR_EVENT
4136 || event
->kind
== TOOL_BAR_EVENT
))
4137 *used_mouse_menu
= 1;
4140 /* Wipe out this event, to catch bugs. */
4141 clear_event (event
);
4142 kbd_fetch_ptr
= event
+ 1;
4147 /* Try generating a mouse motion event. */
4148 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
4150 FRAME_PTR f
= some_mouse_moved ();
4151 Lisp_Object bar_window
;
4152 enum scroll_bar_part part
;
4156 *kbp
= current_kboard
;
4157 /* Note that this uses F to determine which display to look at.
4158 If there is no valid info, it does not store anything
4159 so x remains nil. */
4161 (*mouse_position_hook
) (&f
, 0, &bar_window
, &part
, &x
, &y
, &time
);
4165 /* Decide if we should generate a switch-frame event. Don't
4166 generate switch-frame events for motion outside of all Emacs
4172 frame
= FRAME_FOCUS_FRAME (f
);
4174 XSETFRAME (frame
, f
);
4176 if (! EQ (frame
, internal_last_event_frame
)
4177 && !EQ (frame
, selected_frame
))
4178 obj
= make_lispy_switch_frame (frame
);
4179 internal_last_event_frame
= frame
;
4182 /* If we didn't decide to make a switch-frame event, go ahead and
4183 return a mouse-motion event. */
4184 if (!NILP (x
) && NILP (obj
))
4185 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
4187 #endif /* HAVE_MOUSE */
4189 /* We were promised by the above while loop that there was
4190 something for us to read! */
4193 input_pending
= readable_events (0);
4195 Vlast_event_frame
= internal_last_event_frame
;
4200 /* Process any events that are not user-visible,
4201 then return, without reading any user-visible events. */
4204 swallow_events (do_display
)
4209 while (kbd_fetch_ptr
!= kbd_store_ptr
)
4211 struct input_event
*event
;
4213 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
4217 last_event_timestamp
= event
->timestamp
;
4219 /* These two kinds of events get special handling
4220 and don't actually appear to the command loop. */
4221 if (event
->kind
== SELECTION_REQUEST_EVENT
4222 || event
->kind
== SELECTION_CLEAR_EVENT
)
4225 struct input_event copy
;
4227 /* Remove it from the buffer before processing it,
4228 since otherwise swallow_events called recursively could see it
4229 and process it again. */
4231 kbd_fetch_ptr
= event
+ 1;
4232 input_pending
= readable_events (0);
4233 x_handle_selection_event (©
);
4235 /* We're getting selection request events, but we don't have
4244 old_timers_run
= timers_run
;
4245 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
4247 if (timers_run
!= old_timers_run
&& do_display
)
4248 redisplay_preserve_echo_area (7);
4251 /* Record the start of when Emacs is idle,
4252 for the sake of running idle-time timers. */
4259 /* If we are already in the idle state, do nothing. */
4260 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4263 EMACS_GET_TIME (timer_idleness_start_time
);
4265 timer_last_idleness_start_time
= timer_idleness_start_time
;
4267 /* Mark all idle-time timers as once again candidates for running. */
4268 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCDR (timers
))
4272 timer
= XCAR (timers
);
4274 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4276 XVECTOR (timer
)->contents
[0] = Qnil
;
4280 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
4285 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
4288 /* Resume idle timer from last idle start time. */
4291 timer_resume_idle ()
4293 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4296 timer_idleness_start_time
= timer_last_idleness_start_time
;
4299 /* This is only for debugging. */
4300 struct input_event last_timer_event
;
4302 /* Check whether a timer has fired. To prevent larger problems we simply
4303 disregard elements that are not proper timers. Do not make a circular
4304 timer list for the time being.
4306 Returns the number of seconds to wait until the next timer fires. If a
4307 timer is triggering now, return zero seconds.
4308 If no timer is active, return -1 seconds.
4310 If a timer is ripe, we run it, with quitting turned off.
4312 DO_IT_NOW is now ignored. It used to mean that we should
4313 run the timer directly instead of queueing a timer-event.
4314 Now we always run timers directly. */
4317 timer_check (do_it_now
)
4320 EMACS_TIME nexttime
;
4321 EMACS_TIME now
, idleness_now
;
4322 Lisp_Object timers
, idle_timers
, chosen_timer
;
4323 struct gcpro gcpro1
, gcpro2
, gcpro3
;
4325 EMACS_SET_SECS (nexttime
, -1);
4326 EMACS_SET_USECS (nexttime
, -1);
4328 /* Always consider the ordinary timers. */
4329 timers
= Vtimer_list
;
4330 /* Consider the idle timers only if Emacs is idle. */
4331 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4332 idle_timers
= Vtimer_idle_list
;
4335 chosen_timer
= Qnil
;
4336 GCPRO3 (timers
, idle_timers
, chosen_timer
);
4338 if (CONSP (timers
) || CONSP (idle_timers
))
4340 EMACS_GET_TIME (now
);
4341 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4342 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
4345 while (CONSP (timers
) || CONSP (idle_timers
))
4347 Lisp_Object
*vector
;
4348 Lisp_Object timer
= Qnil
, idle_timer
= Qnil
;
4349 EMACS_TIME timer_time
, idle_timer_time
;
4350 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
4352 /* Skip past invalid timers and timers already handled. */
4355 timer
= XCAR (timers
);
4356 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4358 timers
= XCDR (timers
);
4361 vector
= XVECTOR (timer
)->contents
;
4363 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4364 || !INTEGERP (vector
[3])
4365 || ! NILP (vector
[0]))
4367 timers
= XCDR (timers
);
4371 if (!NILP (idle_timers
))
4373 timer
= XCAR (idle_timers
);
4374 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4376 idle_timers
= XCDR (idle_timers
);
4379 vector
= XVECTOR (timer
)->contents
;
4381 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4382 || !INTEGERP (vector
[3])
4383 || ! NILP (vector
[0]))
4385 idle_timers
= XCDR (idle_timers
);
4390 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
4391 based on the next ordinary timer.
4392 TIMER_DIFFERENCE is the distance in time from NOW to when
4393 this timer becomes ripe (negative if it's already ripe). */
4396 timer
= XCAR (timers
);
4397 vector
= XVECTOR (timer
)->contents
;
4398 EMACS_SET_SECS (timer_time
,
4399 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4400 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
4401 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
4404 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
4405 based on the next idle timer. */
4406 if (!NILP (idle_timers
))
4408 idle_timer
= XCAR (idle_timers
);
4409 vector
= XVECTOR (idle_timer
)->contents
;
4410 EMACS_SET_SECS (idle_timer_time
,
4411 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4412 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
4413 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
4416 /* Decide which timer is the next timer,
4417 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
4418 Also step down the list where we found that timer. */
4420 if (! NILP (timers
) && ! NILP (idle_timers
))
4423 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
4424 if (EMACS_TIME_NEG_P (temp
))
4426 chosen_timer
= timer
;
4427 timers
= XCDR (timers
);
4428 difference
= timer_difference
;
4432 chosen_timer
= idle_timer
;
4433 idle_timers
= XCDR (idle_timers
);
4434 difference
= idle_timer_difference
;
4437 else if (! NILP (timers
))
4439 chosen_timer
= timer
;
4440 timers
= XCDR (timers
);
4441 difference
= timer_difference
;
4445 chosen_timer
= idle_timer
;
4446 idle_timers
= XCDR (idle_timers
);
4447 difference
= idle_timer_difference
;
4449 vector
= XVECTOR (chosen_timer
)->contents
;
4451 /* If timer is ripe, run it if it hasn't been run. */
4452 if (EMACS_TIME_NEG_P (difference
)
4453 || (EMACS_SECS (difference
) == 0
4454 && EMACS_USECS (difference
) == 0))
4456 if (NILP (vector
[0]))
4458 int was_locked
= single_kboard
;
4459 int count
= SPECPDL_INDEX ();
4460 Lisp_Object old_deactivate_mark
= Vdeactivate_mark
;
4462 /* Mark the timer as triggered to prevent problems if the lisp
4463 code fails to reschedule it right. */
4466 specbind (Qinhibit_quit
, Qt
);
4468 call1 (Qtimer_event_handler
, chosen_timer
);
4469 Vdeactivate_mark
= old_deactivate_mark
;
4471 unbind_to (count
, Qnil
);
4473 /* Resume allowing input from any kboard, if that was true before. */
4475 any_kboard_state ();
4477 /* Since we have handled the event,
4478 we don't need to tell the caller to wake up and do it. */
4482 /* When we encounter a timer that is still waiting,
4483 return the amount of time to wait before it is ripe. */
4490 /* No timers are pending in the future. */
4491 /* Return 0 if we generated an event, and -1 if not. */
4496 /* Caches for modify_event_symbol. */
4497 static Lisp_Object accent_key_syms
;
4498 static Lisp_Object func_key_syms
;
4499 static Lisp_Object mouse_syms
;
4500 static Lisp_Object wheel_syms
;
4501 static Lisp_Object drag_n_drop_syms
;
4503 /* This is a list of keysym codes for special "accent" characters.
4504 It parallels lispy_accent_keys. */
4506 static int lispy_accent_codes
[] =
4508 #ifdef XK_dead_circumflex
4513 #ifdef XK_dead_grave
4518 #ifdef XK_dead_tilde
4523 #ifdef XK_dead_diaeresis
4528 #ifdef XK_dead_macron
4533 #ifdef XK_dead_degree
4538 #ifdef XK_dead_acute
4543 #ifdef XK_dead_cedilla
4548 #ifdef XK_dead_breve
4553 #ifdef XK_dead_ogonek
4558 #ifdef XK_dead_caron
4563 #ifdef XK_dead_doubleacute
4564 XK_dead_doubleacute
,
4568 #ifdef XK_dead_abovedot
4573 #ifdef XK_dead_abovering
4583 #ifdef XK_dead_belowdot
4588 #ifdef XK_dead_voiced_sound
4589 XK_dead_voiced_sound
,
4593 #ifdef XK_dead_semivoiced_sound
4594 XK_dead_semivoiced_sound
,
4610 /* This is a list of Lisp names for special "accent" characters.
4611 It parallels lispy_accent_codes. */
4613 static char *lispy_accent_keys
[] =
4631 "dead-voiced-sound",
4632 "dead-semivoiced-sound",
4638 #define FUNCTION_KEY_OFFSET 0x0
4640 char *lispy_function_keys
[] =
4644 0, /* VK_LBUTTON 0x01 */
4645 0, /* VK_RBUTTON 0x02 */
4646 "cancel", /* VK_CANCEL 0x03 */
4647 0, /* VK_MBUTTON 0x04 */
4649 0, 0, 0, /* 0x05 .. 0x07 */
4651 "backspace", /* VK_BACK 0x08 */
4652 "tab", /* VK_TAB 0x09 */
4654 0, 0, /* 0x0A .. 0x0B */
4656 "clear", /* VK_CLEAR 0x0C */
4657 "return", /* VK_RETURN 0x0D */
4659 0, 0, /* 0x0E .. 0x0F */
4661 0, /* VK_SHIFT 0x10 */
4662 0, /* VK_CONTROL 0x11 */
4663 0, /* VK_MENU 0x12 */
4664 "pause", /* VK_PAUSE 0x13 */
4665 "capslock", /* VK_CAPITAL 0x14 */
4667 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
4669 "escape", /* VK_ESCAPE 0x1B */
4671 0, 0, 0, 0, /* 0x1C .. 0x1F */
4673 0, /* VK_SPACE 0x20 */
4674 "prior", /* VK_PRIOR 0x21 */
4675 "next", /* VK_NEXT 0x22 */
4676 "end", /* VK_END 0x23 */
4677 "home", /* VK_HOME 0x24 */
4678 "left", /* VK_LEFT 0x25 */
4679 "up", /* VK_UP 0x26 */
4680 "right", /* VK_RIGHT 0x27 */
4681 "down", /* VK_DOWN 0x28 */
4682 "select", /* VK_SELECT 0x29 */
4683 "print", /* VK_PRINT 0x2A */
4684 "execute", /* VK_EXECUTE 0x2B */
4685 "snapshot", /* VK_SNAPSHOT 0x2C */
4686 "insert", /* VK_INSERT 0x2D */
4687 "delete", /* VK_DELETE 0x2E */
4688 "help", /* VK_HELP 0x2F */
4690 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
4692 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4694 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
4696 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
4698 0, 0, 0, 0, 0, 0, 0, 0, 0,
4699 0, 0, 0, 0, 0, 0, 0, 0, 0,
4700 0, 0, 0, 0, 0, 0, 0, 0,
4702 "lwindow", /* VK_LWIN 0x5B */
4703 "rwindow", /* VK_RWIN 0x5C */
4704 "apps", /* VK_APPS 0x5D */
4706 0, 0, /* 0x5E .. 0x5F */
4708 "kp-0", /* VK_NUMPAD0 0x60 */
4709 "kp-1", /* VK_NUMPAD1 0x61 */
4710 "kp-2", /* VK_NUMPAD2 0x62 */
4711 "kp-3", /* VK_NUMPAD3 0x63 */
4712 "kp-4", /* VK_NUMPAD4 0x64 */
4713 "kp-5", /* VK_NUMPAD5 0x65 */
4714 "kp-6", /* VK_NUMPAD6 0x66 */
4715 "kp-7", /* VK_NUMPAD7 0x67 */
4716 "kp-8", /* VK_NUMPAD8 0x68 */
4717 "kp-9", /* VK_NUMPAD9 0x69 */
4718 "kp-multiply", /* VK_MULTIPLY 0x6A */
4719 "kp-add", /* VK_ADD 0x6B */
4720 "kp-separator", /* VK_SEPARATOR 0x6C */
4721 "kp-subtract", /* VK_SUBTRACT 0x6D */
4722 "kp-decimal", /* VK_DECIMAL 0x6E */
4723 "kp-divide", /* VK_DIVIDE 0x6F */
4724 "f1", /* VK_F1 0x70 */
4725 "f2", /* VK_F2 0x71 */
4726 "f3", /* VK_F3 0x72 */
4727 "f4", /* VK_F4 0x73 */
4728 "f5", /* VK_F5 0x74 */
4729 "f6", /* VK_F6 0x75 */
4730 "f7", /* VK_F7 0x76 */
4731 "f8", /* VK_F8 0x77 */
4732 "f9", /* VK_F9 0x78 */
4733 "f10", /* VK_F10 0x79 */
4734 "f11", /* VK_F11 0x7A */
4735 "f12", /* VK_F12 0x7B */
4736 "f13", /* VK_F13 0x7C */
4737 "f14", /* VK_F14 0x7D */
4738 "f15", /* VK_F15 0x7E */
4739 "f16", /* VK_F16 0x7F */
4740 "f17", /* VK_F17 0x80 */
4741 "f18", /* VK_F18 0x81 */
4742 "f19", /* VK_F19 0x82 */
4743 "f20", /* VK_F20 0x83 */
4744 "f21", /* VK_F21 0x84 */
4745 "f22", /* VK_F22 0x85 */
4746 "f23", /* VK_F23 0x86 */
4747 "f24", /* VK_F24 0x87 */
4749 0, 0, 0, 0, /* 0x88 .. 0x8B */
4750 0, 0, 0, 0, /* 0x8C .. 0x8F */
4752 "kp-numlock", /* VK_NUMLOCK 0x90 */
4753 "scroll", /* VK_SCROLL 0x91 */
4755 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
4756 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
4757 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
4758 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
4759 "kp-end", /* VK_NUMPAD_END 0x96 */
4760 "kp-home", /* VK_NUMPAD_HOME 0x97 */
4761 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
4762 "kp-up", /* VK_NUMPAD_UP 0x99 */
4763 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
4764 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
4765 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
4766 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
4768 0, 0, /* 0x9E .. 0x9F */
4771 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
4772 * Used only as parameters to GetAsyncKeyState and GetKeyState.
4773 * No other API or message will distinguish left and right keys this way.
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,
4781 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4787 "attn", /* VK_ATTN 0xF6 */
4788 "crsel", /* VK_CRSEL 0xF7 */
4789 "exsel", /* VK_EXSEL 0xF8 */
4790 "ereof", /* VK_EREOF 0xF9 */
4791 "play", /* VK_PLAY 0xFA */
4792 "zoom", /* VK_ZOOM 0xFB */
4793 "noname", /* VK_NONAME 0xFC */
4794 "pa1", /* VK_PA1 0xFD */
4795 "oem_clear", /* VK_OEM_CLEAR 0xFE */
4799 #else /* not HAVE_NTGUI */
4801 /* This should be dealt with in XTread_socket now, and that doesn't
4802 depend on the client system having the Kana syms defined. See also
4803 the XK_kana_A case below. */
4806 static char *lispy_kana_keys
[] =
4808 /* X Keysym value */
4809 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x400 .. 0x40f */
4810 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x410 .. 0x41f */
4811 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x420 .. 0x42f */
4812 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x430 .. 0x43f */
4813 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x440 .. 0x44f */
4814 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x450 .. 0x45f */
4815 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x460 .. 0x46f */
4816 0,0,0,0,0,0,0,0,0,0,0,0,0,0,"overline",0,
4817 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x480 .. 0x48f */
4818 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x490 .. 0x49f */
4819 0, "kana-fullstop", "kana-openingbracket", "kana-closingbracket",
4820 "kana-comma", "kana-conjunctive", "kana-WO", "kana-a",
4821 "kana-i", "kana-u", "kana-e", "kana-o",
4822 "kana-ya", "kana-yu", "kana-yo", "kana-tsu",
4823 "prolongedsound", "kana-A", "kana-I", "kana-U",
4824 "kana-E", "kana-O", "kana-KA", "kana-KI",
4825 "kana-KU", "kana-KE", "kana-KO", "kana-SA",
4826 "kana-SHI", "kana-SU", "kana-SE", "kana-SO",
4827 "kana-TA", "kana-CHI", "kana-TSU", "kana-TE",
4828 "kana-TO", "kana-NA", "kana-NI", "kana-NU",
4829 "kana-NE", "kana-NO", "kana-HA", "kana-HI",
4830 "kana-FU", "kana-HE", "kana-HO", "kana-MA",
4831 "kana-MI", "kana-MU", "kana-ME", "kana-MO",
4832 "kana-YA", "kana-YU", "kana-YO", "kana-RA",
4833 "kana-RI", "kana-RU", "kana-RE", "kana-RO",
4834 "kana-WA", "kana-N", "voicedsound", "semivoicedsound",
4835 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4e0 .. 0x4ef */
4836 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4f0 .. 0x4ff */
4838 #endif /* XK_kana_A */
4841 #define FUNCTION_KEY_OFFSET 0xff00
4843 /* You'll notice that this table is arranged to be conveniently
4844 indexed by X Windows keysym values. */
4845 static char *lispy_function_keys
[] =
4847 /* X Keysym value */
4849 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00...0f */
4850 "backspace", "tab", "linefeed", "clear",
4852 0, 0, 0, "pause", /* 0xff10...1f */
4853 0, 0, 0, 0, 0, 0, 0, "escape",
4855 0, "kanji", "muhenkan", "henkan", /* 0xff20...2f */
4856 "romaji", "hiragana", "katakana", "hiragana-katakana",
4857 "zenkaku", "hankaku", "zenkaku-hankaku", "touroku",
4858 "massyo", "kana-lock", "kana-shift", "eisu-shift",
4859 "eisu-toggle", /* 0xff30...3f */
4860 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4861 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
4863 "home", "left", "up", "right", /* 0xff50 */ /* IsCursorKey */
4864 "down", "prior", "next", "end",
4865 "begin", 0, 0, 0, 0, 0, 0, 0,
4866 "select", /* 0xff60 */ /* IsMiscFunctionKey */
4877 "break", /* 0xff6b */
4880 0, 0, 0, 0, "backtab", 0, 0, 0, /* 0xff70... */
4881 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff78... */
4882 "kp-space", /* 0xff80 */ /* IsKeypadKey */
4883 0, 0, 0, 0, 0, 0, 0, 0,
4884 "kp-tab", /* 0xff89 */
4886 "kp-enter", /* 0xff8d */
4888 "kp-f1", /* 0xff91 */
4892 "kp-home", /* 0xff95 */
4897 "kp-prior", /* kp-page-up */
4898 "kp-next", /* kp-page-down */
4904 0, 0, 0, 0, 0, 0, 0, 0, 0,
4905 "kp-multiply", /* 0xffaa */
4910 "kp-divide", /* 0xffaf */
4911 "kp-0", /* 0xffb0 */
4912 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
4915 "kp-equal", /* 0xffbd */
4916 "f1", /* 0xffbe */ /* IsFunctionKey */
4918 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
4919 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
4920 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
4921 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
4922 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
4923 0, 0, 0, 0, 0, 0, 0, 0,
4924 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
4925 0, 0, 0, 0, 0, 0, 0, "delete"
4928 /* ISO 9995 Function and Modifier Keys; the first byte is 0xFE. */
4929 #define ISO_FUNCTION_KEY_OFFSET 0xfe00
4931 static char *iso_lispy_function_keys
[] =
4933 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe00 */
4934 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe08 */
4935 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe10 */
4936 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe18 */
4937 "iso-lefttab", /* 0xfe20 */
4938 "iso-move-line-up", "iso-move-line-down",
4939 "iso-partial-line-up", "iso-partial-line-down",
4940 "iso-partial-space-left", "iso-partial-space-right",
4941 "iso-set-margin-left", "iso-set-margin-right", /* 0xffe27, 28 */
4942 "iso-release-margin-left", "iso-release-margin-right",
4943 "iso-release-both-margins",
4944 "iso-fast-cursor-left", "iso-fast-cursor-right",
4945 "iso-fast-cursor-up", "iso-fast-cursor-down",
4946 "iso-continuous-underline", "iso-discontinuous-underline", /* 0xfe30, 31 */
4947 "iso-emphasize", "iso-center-object", "iso-enter", /* ... 0xfe34 */
4950 #endif /* not HAVE_NTGUI */
4952 Lisp_Object Vlispy_mouse_stem
;
4954 static char *lispy_wheel_names
[] =
4956 "wheel-up", "wheel-down"
4959 /* drag-n-drop events are generated when a set of selected files are
4960 dragged from another application and dropped onto an Emacs window. */
4961 static char *lispy_drag_n_drop_names
[] =
4966 /* Scroll bar parts. */
4967 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
4968 Lisp_Object Qup
, Qdown
, Qbottom
, Qend_scroll
;
4969 Lisp_Object Qtop
, Qratio
;
4971 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
4972 Lisp_Object
*scroll_bar_parts
[] = {
4973 &Qabove_handle
, &Qhandle
, &Qbelow_handle
,
4974 &Qup
, &Qdown
, &Qtop
, &Qbottom
, &Qend_scroll
, &Qratio
4977 /* User signal events. */
4978 Lisp_Object Qusr1_signal
, Qusr2_signal
;
4980 Lisp_Object
*lispy_user_signals
[] =
4982 &Qusr1_signal
, &Qusr2_signal
4986 /* A vector, indexed by button number, giving the down-going location
4987 of currently depressed buttons, both scroll bar and non-scroll bar.
4989 The elements have the form
4990 (BUTTON-NUMBER MODIFIER-MASK . REST)
4991 where REST is the cdr of a position as it would be reported in the event.
4993 The make_lispy_event function stores positions here to tell the
4994 difference between click and drag events, and to store the starting
4995 location to be included in drag events. */
4997 static Lisp_Object button_down_location
;
4999 /* Information about the most recent up-going button event: Which
5000 button, what location, and what time. */
5002 static int last_mouse_button
;
5003 static int last_mouse_x
;
5004 static int last_mouse_y
;
5005 static unsigned long button_down_time
;
5007 /* The maximum time between clicks to make a double-click, or Qnil to
5008 disable double-click detection, or Qt for no time limit. */
5010 Lisp_Object Vdouble_click_time
;
5012 /* Maximum number of pixels the mouse may be moved between clicks
5013 to make a double-click. */
5015 EMACS_INT double_click_fuzz
;
5017 /* The number of clicks in this multiple-click. */
5019 int double_click_count
;
5021 /* Return position of a mouse click or wheel event */
5024 make_lispy_position (f
, x
, y
, time
)
5030 enum window_part part
;
5031 Lisp_Object posn
= Qnil
;
5032 Lisp_Object extra_info
= Qnil
;
5035 /* Set `window' to the window under frame pixel coordinates (x,y) */
5037 window
= window_from_coordinates (f
, XINT (*x
), XINT (*y
),
5038 &part
, &wx
, &wy
, 0);
5042 if (WINDOWP (window
))
5044 /* It's a click in window window at frame coordinates (x,y) */
5045 struct window
*w
= XWINDOW (window
);
5046 Lisp_Object string_info
= Qnil
;
5047 int textpos
= -1, rx
= -1, ry
= -1;
5048 int dx
= -1, dy
= -1;
5049 int width
= -1, height
= -1;
5050 Lisp_Object object
= Qnil
;
5052 /* Set event coordinates to window-relative coordinates
5053 for constructing the Lisp event below. */
5057 if (part
== ON_MODE_LINE
|| part
== ON_HEADER_LINE
)
5059 /* Mode line or header line. Look for a string under
5060 the mouse that may have a `local-map' property. */
5064 posn
= part
== ON_MODE_LINE
? Qmode_line
: Qheader_line
;
5066 string
= mode_line_string (w
, part
, &rx
, &ry
, &charpos
,
5067 &object
, &dx
, &dy
, &width
, &height
);
5068 if (STRINGP (string
))
5069 string_info
= Fcons (string
, make_number (charpos
));
5070 if (w
== XWINDOW (selected_window
))
5073 textpos
= XMARKER (w
->pointm
)->charpos
;
5075 else if (part
== ON_VERTICAL_BORDER
)
5077 posn
= Qvertical_line
;
5082 else if (part
== ON_LEFT_MARGIN
|| part
== ON_RIGHT_MARGIN
)
5087 posn
= (part
== ON_LEFT_MARGIN
) ? Qleft_margin
: Qright_margin
;
5089 string
= marginal_area_string (w
, part
, &rx
, &ry
, &charpos
,
5090 &object
, &dx
, &dy
, &width
, &height
);
5091 if (STRINGP (string
))
5092 string_info
= Fcons (string
, make_number (charpos
));
5094 else if (part
== ON_LEFT_FRINGE
|| part
== ON_RIGHT_FRINGE
)
5096 posn
= (part
== ON_LEFT_FRINGE
) ? Qleft_fringe
: Qright_fringe
;
5099 wx
= (part
== ON_LEFT_FRINGE
) ? 0 : window_box_width (w
, TEXT_AREA
);
5100 if (part
== ON_RIGHT_FRINGE
)
5101 dx
-= (window_box_width (w
, LEFT_MARGIN_AREA
)
5102 + window_box_width (w
, TEXT_AREA
)
5103 + (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
5104 ? window_box_width (w
, RIGHT_MARGIN_AREA
)
5106 else if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
5107 dx
-= window_box_width (w
, LEFT_MARGIN_AREA
);
5112 Lisp_Object string2
, object2
= Qnil
;
5113 struct display_pos p
;
5115 int width2
, height2
;
5116 wx
= max (WINDOW_LEFT_MARGIN_WIDTH (w
), wx
);
5117 string2
= buffer_posn_from_coords (w
, &wx
, &wy
, &p
,
5118 &object2
, &dx2
, &dy2
,
5120 textpos
= CHARPOS (p
.pos
);
5121 if (rx
< 0) rx
= wx
;
5122 if (ry
< 0) ry
= wy
;
5123 if (dx
< 0) dx
= dx2
;
5124 if (dy
< 0) dy
= dy2
;
5125 if (width
< 0) width
= width2
;
5126 if (height
< 0) height
= height2
;
5130 posn
= make_number (textpos
);
5131 if (STRINGP (string2
))
5132 string_info
= Fcons (string2
,
5133 make_number (CHARPOS (p
.string_pos
)));
5139 #ifdef HAVE_WINDOW_SYSTEM
5140 if (IMAGEP (object
))
5142 Lisp_Object image_map
, hotspot
;
5143 if ((image_map
= Fplist_get (XCDR (object
), QCmap
),
5145 && (hotspot
= find_hot_spot (image_map
, dx
, dy
),
5147 && (hotspot
= XCDR (hotspot
), CONSP (hotspot
)))
5148 posn
= XCAR (hotspot
);
5153 extra_info
= Fcons (object
,
5154 Fcons (Fcons (make_number (dx
),
5156 Fcons (Fcons (make_number (width
),
5157 make_number (height
)),
5161 extra_info
= Fcons (string_info
,
5162 Fcons (make_number (textpos
),
5163 Fcons (Fcons (make_number (rx
),
5169 XSETFRAME (window
, f
);
5174 XSETFASTINT (*x
, 0);
5175 XSETFASTINT (*y
, 0);
5178 return Fcons (window
,
5180 Fcons (Fcons (*x
, *y
),
5181 Fcons (make_number (time
),
5185 /* Given a struct input_event, build the lisp event which represents
5186 it. If EVENT is 0, build a mouse movement event from the mouse
5187 movement buffer, which should have a movement event in it.
5189 Note that events must be passed to this function in the order they
5190 are received; this function stores the location of button presses
5191 in order to build drag events when the button is released. */
5194 make_lispy_event (event
)
5195 struct input_event
*event
;
5199 switch (SWITCH_ENUM_CAST (event
->kind
))
5201 /* A simple keystroke. */
5202 case ASCII_KEYSTROKE_EVENT
:
5204 Lisp_Object lispy_c
;
5205 int c
= event
->code
& 0377;
5206 /* Turn ASCII characters into control characters
5208 if (event
->modifiers
& ctrl_modifier
)
5209 c
= make_ctrl_char (c
);
5211 /* Add in the other modifier bits. We took care of ctrl_modifier
5212 just above, and the shift key was taken care of by the X code,
5213 and applied to control characters by make_ctrl_char. */
5214 c
|= (event
->modifiers
5215 & (meta_modifier
| alt_modifier
5216 | hyper_modifier
| super_modifier
));
5217 /* Distinguish Shift-SPC from SPC. */
5218 if ((event
->code
& 0377) == 040
5219 && event
->modifiers
& shift_modifier
)
5220 c
|= shift_modifier
;
5221 button_down_time
= 0;
5222 XSETFASTINT (lispy_c
, c
);
5226 case MULTIBYTE_CHAR_KEYSTROKE_EVENT
:
5228 Lisp_Object lispy_c
;
5229 int c
= event
->code
;
5231 /* Add in the other modifier bits. We took care of ctrl_modifier
5232 just above, and the shift key was taken care of by the X code,
5233 and applied to control characters by make_ctrl_char. */
5234 c
|= (event
->modifiers
5235 & (meta_modifier
| alt_modifier
5236 | hyper_modifier
| super_modifier
| ctrl_modifier
));
5237 /* What about the `shift' modifier ? */
5238 button_down_time
= 0;
5239 XSETFASTINT (lispy_c
, c
);
5243 /* A function key. The symbol may need to have modifier prefixes
5245 case NON_ASCII_KEYSTROKE_EVENT
:
5246 button_down_time
= 0;
5248 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
5249 if (event
->code
== lispy_accent_codes
[i
])
5250 return modify_event_symbol (i
,
5252 Qfunction_key
, Qnil
,
5253 lispy_accent_keys
, &accent_key_syms
,
5254 (sizeof (lispy_accent_keys
)
5255 / sizeof (lispy_accent_keys
[0])));
5259 if (event
->code
>= 0x400 && event
->code
< 0x500)
5260 return modify_event_symbol (event
->code
- 0x400,
5261 event
->modifiers
& ~shift_modifier
,
5262 Qfunction_key
, Qnil
,
5263 lispy_kana_keys
, &func_key_syms
,
5264 (sizeof (lispy_kana_keys
)
5265 / sizeof (lispy_kana_keys
[0])));
5266 #endif /* XK_kana_A */
5269 #ifdef ISO_FUNCTION_KEY_OFFSET
5270 if (event
->code
< FUNCTION_KEY_OFFSET
5271 && event
->code
>= ISO_FUNCTION_KEY_OFFSET
)
5272 return modify_event_symbol (event
->code
- ISO_FUNCTION_KEY_OFFSET
,
5274 Qfunction_key
, Qnil
,
5275 iso_lispy_function_keys
, &func_key_syms
,
5276 (sizeof (iso_lispy_function_keys
)
5277 / sizeof (iso_lispy_function_keys
[0])));
5280 /* Handle system-specific or unknown keysyms. */
5281 if (event
->code
& (1 << 28)
5282 || event
->code
- FUNCTION_KEY_OFFSET
< 0
5283 || (event
->code
- FUNCTION_KEY_OFFSET
5284 >= sizeof lispy_function_keys
/ sizeof *lispy_function_keys
)
5285 || !lispy_function_keys
[event
->code
- FUNCTION_KEY_OFFSET
])
5287 /* We need to use an alist rather than a vector as the cache
5288 since we can't make a vector long enuf. */
5289 if (NILP (current_kboard
->system_key_syms
))
5290 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
5291 return modify_event_symbol (event
->code
,
5294 current_kboard
->Vsystem_key_alist
,
5295 0, ¤t_kboard
->system_key_syms
,
5299 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
5301 Qfunction_key
, Qnil
,
5302 lispy_function_keys
, &func_key_syms
,
5303 (sizeof (lispy_function_keys
)
5304 / sizeof (lispy_function_keys
[0])));
5307 /* A mouse click. Figure out where it is, decide whether it's
5308 a press, click or drag, and build the appropriate structure. */
5309 case MOUSE_CLICK_EVENT
:
5310 #ifndef USE_TOOLKIT_SCROLL_BARS
5311 case SCROLL_BAR_CLICK_EVENT
:
5314 int button
= event
->code
;
5316 Lisp_Object position
;
5317 Lisp_Object
*start_pos_ptr
;
5318 Lisp_Object start_pos
;
5322 /* Build the position as appropriate for this mouse click. */
5323 if (event
->kind
== MOUSE_CLICK_EVENT
)
5325 struct frame
*f
= XFRAME (event
->frame_or_window
);
5326 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5330 /* Ignore mouse events that were made on frame that
5331 have been deleted. */
5332 if (! FRAME_LIVE_P (f
))
5335 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5336 /* EVENT->x and EVENT->y are frame-relative pixel
5337 coordinates at this place. Under old redisplay, COLUMN
5338 and ROW are set to frame relative glyph coordinates
5339 which are then used to determine whether this click is
5340 in a menu (non-toolkit version). */
5341 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
5342 &column
, &row
, NULL
, 1);
5344 /* In the non-toolkit version, clicks on the menu bar
5345 are ordinary button events in the event buffer.
5346 Distinguish them, and invoke the menu.
5348 (In the toolkit version, the toolkit handles the menu bar
5349 and Emacs doesn't know about it until after the user
5350 makes a selection.) */
5351 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
5352 && (event
->modifiers
& down_modifier
))
5354 Lisp_Object items
, item
;
5359 /* Activate the menu bar on the down event. If the
5360 up event comes in before the menu code can deal with it,
5362 if (! (event
->modifiers
& down_modifier
))
5366 /* Find the menu bar item under `column'. */
5368 items
= FRAME_MENU_BAR_ITEMS (f
);
5369 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 4)
5371 Lisp_Object pos
, string
;
5372 string
= AREF (items
, i
+ 1);
5373 pos
= AREF (items
, i
+ 3);
5376 if (column
>= XINT (pos
)
5377 && column
< XINT (pos
) + SCHARS (string
))
5379 item
= AREF (items
, i
);
5384 /* ELisp manual 2.4b says (x y) are window relative but
5385 code says they are frame-relative. */
5387 = Fcons (event
->frame_or_window
,
5389 Fcons (Fcons (event
->x
, event
->y
),
5390 Fcons (make_number (event
->timestamp
),
5393 return Fcons (item
, Fcons (position
, Qnil
));
5395 #endif /* not USE_X_TOOLKIT && not USE_GTK */
5397 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5400 #ifndef USE_TOOLKIT_SCROLL_BARS
5403 /* It's a scrollbar click. */
5405 Lisp_Object portion_whole
;
5408 window
= event
->frame_or_window
;
5409 portion_whole
= Fcons (event
->x
, event
->y
);
5410 part
= *scroll_bar_parts
[(int) event
->part
];
5414 Fcons (Qvertical_scroll_bar
,
5415 Fcons (portion_whole
,
5416 Fcons (make_number (event
->timestamp
),
5417 Fcons (part
, Qnil
)))));
5419 #endif /* not USE_TOOLKIT_SCROLL_BARS */
5421 if (button
>= ASIZE (button_down_location
))
5423 button_down_location
= larger_vector (button_down_location
,
5425 mouse_syms
= larger_vector (mouse_syms
, button
+ 1, Qnil
);
5428 start_pos_ptr
= &AREF (button_down_location
, button
);
5429 start_pos
= *start_pos_ptr
;
5430 *start_pos_ptr
= Qnil
;
5433 /* On window-system frames, use the value of
5434 double-click-fuzz as is. On other frames, interpret it
5435 as a multiple of 1/8 characters. */
5439 if (WINDOWP (event
->frame_or_window
))
5440 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5441 else if (FRAMEP (event
->frame_or_window
))
5442 f
= XFRAME (event
->frame_or_window
);
5446 if (FRAME_WINDOW_P (f
))
5447 fuzz
= double_click_fuzz
;
5449 fuzz
= double_click_fuzz
/ 8;
5451 is_double
= (button
== last_mouse_button
5452 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5453 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5454 && button_down_time
!= 0
5455 && (EQ (Vdouble_click_time
, Qt
)
5456 || (INTEGERP (Vdouble_click_time
)
5457 && ((int)(event
->timestamp
- button_down_time
)
5458 < XINT (Vdouble_click_time
)))));
5461 last_mouse_button
= button
;
5462 last_mouse_x
= XINT (event
->x
);
5463 last_mouse_y
= XINT (event
->y
);
5465 /* If this is a button press, squirrel away the location, so
5466 we can decide later whether it was a click or a drag. */
5467 if (event
->modifiers
& down_modifier
)
5471 double_click_count
++;
5472 event
->modifiers
|= ((double_click_count
> 2)
5477 double_click_count
= 1;
5478 button_down_time
= event
->timestamp
;
5479 *start_pos_ptr
= Fcopy_alist (position
);
5482 /* Now we're releasing a button - check the co-ordinates to
5483 see if this was a click or a drag. */
5484 else if (event
->modifiers
& up_modifier
)
5486 /* If we did not see a down before this up, ignore the up.
5487 Probably this happened because the down event chose a
5488 menu item. It would be an annoyance to treat the
5489 release of the button that chose the menu item as a
5492 if (!CONSP (start_pos
))
5495 event
->modifiers
&= ~up_modifier
;
5496 #if 0 /* Formerly we treated an up with no down as a click event. */
5497 if (!CONSP (start_pos
))
5498 event
->modifiers
|= click_modifier
;
5503 EMACS_INT xdiff
= double_click_fuzz
, ydiff
= double_click_fuzz
;
5505 /* The third element of every position
5506 should be the (x,y) pair. */
5507 down
= Fcar (Fcdr (Fcdr (start_pos
)));
5509 && INTEGERP (XCAR (down
)) && INTEGERP (XCDR (down
)))
5511 xdiff
= XINT (event
->x
) - XINT (XCAR (down
));
5512 ydiff
= XINT (event
->y
) - XINT (XCDR (down
));
5515 if (xdiff
< double_click_fuzz
&& xdiff
> - double_click_fuzz
5516 && ydiff
< double_click_fuzz
&& ydiff
> - double_click_fuzz
5517 /* Maybe the mouse has moved a lot, caused scrolling, and
5518 eventually ended up at the same screen position (but
5519 not buffer position) in which case it is a drag, not
5521 /* FIXME: OTOH if the buffer position has changed
5522 because of a timer or process filter rather than
5523 because of mouse movement, it should be considered as
5524 a click. But mouse-drag-region completely ignores
5525 this case and it hasn't caused any real problem, so
5526 it's probably OK to ignore it as well. */
5527 && EQ (Fcar (Fcdr (start_pos
)), Fcar (Fcdr (position
))))
5528 /* Mouse hasn't moved (much). */
5529 event
->modifiers
|= click_modifier
;
5532 button_down_time
= 0;
5533 event
->modifiers
|= drag_modifier
;
5536 /* Don't check is_double; treat this as multiple
5537 if the down-event was multiple. */
5538 if (double_click_count
> 1)
5539 event
->modifiers
|= ((double_click_count
> 2)
5545 /* Every mouse event should either have the down_modifier or
5546 the up_modifier set. */
5550 /* Get the symbol we should use for the mouse click. */
5553 head
= modify_event_symbol (button
,
5555 Qmouse_click
, Vlispy_mouse_stem
,
5558 XVECTOR (mouse_syms
)->size
);
5559 if (event
->modifiers
& drag_modifier
)
5564 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
5567 Fcons (make_number (double_click_count
),
5578 Lisp_Object position
;
5581 /* Build the position as appropriate for this mouse click. */
5582 struct frame
*f
= XFRAME (event
->frame_or_window
);
5584 /* Ignore wheel events that were made on frame that have been
5586 if (! FRAME_LIVE_P (f
))
5589 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5592 /* Set double or triple modifiers to indicate the wheel speed. */
5594 /* On window-system frames, use the value of
5595 double-click-fuzz as is. On other frames, interpret it
5596 as a multiple of 1/8 characters. */
5601 if (WINDOWP (event
->frame_or_window
))
5602 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5603 else if (FRAMEP (event
->frame_or_window
))
5604 f
= XFRAME (event
->frame_or_window
);
5608 if (FRAME_WINDOW_P (f
))
5609 fuzz
= double_click_fuzz
;
5611 fuzz
= double_click_fuzz
/ 8;
5613 is_double
= (last_mouse_button
< 0
5614 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5615 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5616 && button_down_time
!= 0
5617 && (EQ (Vdouble_click_time
, Qt
)
5618 || (INTEGERP (Vdouble_click_time
)
5619 && ((int)(event
->timestamp
- button_down_time
)
5620 < XINT (Vdouble_click_time
)))));
5623 double_click_count
++;
5624 event
->modifiers
|= ((double_click_count
> 2)
5630 double_click_count
= 1;
5631 event
->modifiers
|= click_modifier
;
5634 button_down_time
= event
->timestamp
;
5635 /* Use a negative value to distinguish wheel from mouse button. */
5636 last_mouse_button
= -1;
5637 last_mouse_x
= XINT (event
->x
);
5638 last_mouse_y
= XINT (event
->y
);
5644 if (event
->modifiers
& up_modifier
)
5646 /* Emit a wheel-up event. */
5647 event
->modifiers
&= ~up_modifier
;
5650 else if (event
->modifiers
& down_modifier
)
5652 /* Emit a wheel-down event. */
5653 event
->modifiers
&= ~down_modifier
;
5657 /* Every wheel event should either have the down_modifier or
5658 the up_modifier set. */
5661 /* Get the symbol we should use for the wheel event. */
5662 head
= modify_event_symbol (symbol_num
,
5668 ASIZE (wheel_syms
));
5671 if (event
->modifiers
& (double_modifier
| triple_modifier
))
5674 Fcons (make_number (double_click_count
),
5683 #ifdef USE_TOOLKIT_SCROLL_BARS
5685 /* We don't have down and up events if using toolkit scroll bars,
5686 so make this always a click event. Store in the `part' of
5687 the Lisp event a symbol which maps to the following actions:
5689 `above_handle' page up
5690 `below_handle' page down
5694 `bottom' bottom of buffer
5695 `handle' thumb has been dragged.
5696 `end-scroll' end of interaction with scroll bar
5698 The incoming input_event contains in its `part' member an
5699 index of type `enum scroll_bar_part' which we can use as an
5700 index in scroll_bar_parts to get the appropriate symbol. */
5702 case SCROLL_BAR_CLICK_EVENT
:
5704 Lisp_Object position
, head
, window
, portion_whole
, part
;
5706 window
= event
->frame_or_window
;
5707 portion_whole
= Fcons (event
->x
, event
->y
);
5708 part
= *scroll_bar_parts
[(int) event
->part
];
5712 Fcons (Qvertical_scroll_bar
,
5713 Fcons (portion_whole
,
5714 Fcons (make_number (event
->timestamp
),
5715 Fcons (part
, Qnil
)))));
5717 /* Always treat scroll bar events as clicks. */
5718 event
->modifiers
|= click_modifier
;
5719 event
->modifiers
&= ~up_modifier
;
5721 if (event
->code
>= ASIZE (mouse_syms
))
5722 mouse_syms
= larger_vector (mouse_syms
, event
->code
+ 1, Qnil
);
5724 /* Get the symbol we should use for the mouse click. */
5725 head
= modify_event_symbol (event
->code
,
5730 XVECTOR (mouse_syms
)->size
);
5731 return Fcons (head
, Fcons (position
, Qnil
));
5734 #endif /* USE_TOOLKIT_SCROLL_BARS */
5737 case W32_SCROLL_BAR_CLICK_EVENT
:
5739 int button
= event
->code
;
5741 Lisp_Object position
;
5742 Lisp_Object
*start_pos_ptr
;
5743 Lisp_Object start_pos
;
5747 Lisp_Object portion_whole
;
5750 window
= event
->frame_or_window
;
5751 portion_whole
= Fcons (event
->x
, event
->y
);
5752 part
= *scroll_bar_parts
[(int) event
->part
];
5756 Fcons (Qvertical_scroll_bar
,
5757 Fcons (portion_whole
,
5758 Fcons (make_number (event
->timestamp
),
5759 Fcons (part
, Qnil
)))));
5762 /* Always treat W32 scroll bar events as clicks. */
5763 event
->modifiers
|= click_modifier
;
5766 /* Get the symbol we should use for the mouse click. */
5769 head
= modify_event_symbol (button
,
5774 XVECTOR (mouse_syms
)->size
);
5780 #endif /* WINDOWSNT */
5782 case DRAG_N_DROP_EVENT
:
5785 Lisp_Object head
, position
;
5788 /* The frame_or_window field should be a cons of the frame in
5789 which the event occurred and a list of the filenames
5791 if (! CONSP (event
->frame_or_window
))
5794 f
= XFRAME (XCAR (event
->frame_or_window
));
5795 files
= XCDR (event
->frame_or_window
);
5797 /* Ignore mouse events that were made on frames that
5798 have been deleted. */
5799 if (! FRAME_LIVE_P (f
))
5802 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5805 head
= modify_event_symbol (0, event
->modifiers
,
5807 lispy_drag_n_drop_names
,
5808 &drag_n_drop_syms
, 1);
5814 #endif /* HAVE_MOUSE */
5816 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
5817 || defined (USE_GTK)
5818 case MENU_BAR_EVENT
:
5819 if (EQ (event
->arg
, event
->frame_or_window
))
5820 /* This is the prefix key. We translate this to
5821 `(menu_bar)' because the code in keyboard.c for menu
5822 events, which we use, relies on this. */
5823 return Fcons (Qmenu_bar
, Qnil
);
5827 case SELECT_WINDOW_EVENT
:
5828 /* Make an event (select-window (WINDOW)). */
5829 return Fcons (Qselect_window
,
5830 Fcons (Fcons (event
->frame_or_window
, Qnil
),
5833 case TOOL_BAR_EVENT
:
5834 if (EQ (event
->arg
, event
->frame_or_window
))
5835 /* This is the prefix key. We translate this to
5836 `(tool_bar)' because the code in keyboard.c for tool bar
5837 events, which we use, relies on this. */
5838 return Fcons (Qtool_bar
, Qnil
);
5839 else if (SYMBOLP (event
->arg
))
5840 return apply_modifiers (event
->modifiers
, event
->arg
);
5843 case USER_SIGNAL_EVENT
:
5844 /* A user signal. */
5845 return *lispy_user_signals
[event
->code
];
5847 case SAVE_SESSION_EVENT
:
5848 return Qsave_session
;
5850 /* The 'kind' field of the event is something we don't recognize. */
5859 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
5861 Lisp_Object bar_window
;
5862 enum scroll_bar_part part
;
5866 /* Is it a scroll bar movement? */
5867 if (frame
&& ! NILP (bar_window
))
5869 Lisp_Object part_sym
;
5871 part_sym
= *scroll_bar_parts
[(int) part
];
5872 return Fcons (Qscroll_bar_movement
,
5873 (Fcons (Fcons (bar_window
,
5874 Fcons (Qvertical_scroll_bar
,
5875 Fcons (Fcons (x
, y
),
5876 Fcons (make_number (time
),
5882 /* Or is it an ordinary mouse movement? */
5885 Lisp_Object position
;
5887 position
= make_lispy_position (frame
, &x
, &y
, time
);
5889 return Fcons (Qmouse_movement
,
5895 #endif /* HAVE_MOUSE */
5897 /* Construct a switch frame event. */
5899 make_lispy_switch_frame (frame
)
5902 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
5905 /* Manipulating modifiers. */
5907 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
5909 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
5910 SYMBOL's name of the end of the modifiers; the string from this
5911 position is the unmodified symbol name.
5913 This doesn't use any caches. */
5916 parse_modifiers_uncached (symbol
, modifier_end
)
5924 CHECK_SYMBOL (symbol
);
5927 name
= SYMBOL_NAME (symbol
);
5929 for (i
= 0; i
+2 <= SBYTES (name
); )
5931 int this_mod_end
= 0;
5934 /* See if the name continues with a modifier word.
5935 Check that the word appears, but don't check what follows it.
5936 Set this_mod and this_mod_end to record what we find. */
5938 switch (SREF (name
, i
))
5940 #define SINGLE_LETTER_MOD(BIT) \
5941 (this_mod_end = i + 1, this_mod = BIT)
5944 SINGLE_LETTER_MOD (alt_modifier
);
5948 SINGLE_LETTER_MOD (ctrl_modifier
);
5952 SINGLE_LETTER_MOD (hyper_modifier
);
5956 SINGLE_LETTER_MOD (meta_modifier
);
5960 SINGLE_LETTER_MOD (shift_modifier
);
5964 SINGLE_LETTER_MOD (super_modifier
);
5967 #undef SINGLE_LETTER_MOD
5969 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
5970 if (i + LEN + 1 <= SBYTES (name) \
5971 && ! strncmp (SDATA (name) + i, NAME, LEN)) \
5973 this_mod_end = i + LEN; \
5978 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
5979 MULTI_LETTER_MOD (down_modifier
, "down", 4);
5980 MULTI_LETTER_MOD (double_modifier
, "double", 6);
5984 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
5986 #undef MULTI_LETTER_MOD
5990 /* If we found no modifier, stop looking for them. */
5991 if (this_mod_end
== 0)
5994 /* Check there is a dash after the modifier, so that it
5995 really is a modifier. */
5996 if (this_mod_end
>= SBYTES (name
)
5997 || SREF (name
, this_mod_end
) != '-')
6000 /* This modifier is real; look for another. */
6001 modifiers
|= this_mod
;
6002 i
= this_mod_end
+ 1;
6005 /* Should we include the `click' modifier? */
6006 if (! (modifiers
& (down_modifier
| drag_modifier
6007 | double_modifier
| triple_modifier
))
6008 && i
+ 7 == SBYTES (name
)
6009 && strncmp (SDATA (name
) + i
, "mouse-", 6) == 0
6010 && ('0' <= SREF (name
, i
+ 6) && SREF (name
, i
+ 6) <= '9'))
6011 modifiers
|= click_modifier
;
6019 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
6020 prepended to the string BASE[0..BASE_LEN-1].
6021 This doesn't use any caches. */
6023 apply_modifiers_uncached (modifiers
, base
, base_len
, base_len_byte
)
6026 int base_len
, base_len_byte
;
6028 /* Since BASE could contain nulls, we can't use intern here; we have
6029 to use Fintern, which expects a genuine Lisp_String, and keeps a
6032 = (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
6038 /* Only the event queue may use the `up' modifier; it should always
6039 be turned into a click or drag event before presented to lisp code. */
6040 if (modifiers
& up_modifier
)
6043 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
6044 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
6045 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
6046 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
6047 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
6048 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
6049 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
6050 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
6051 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
6052 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
6053 /* The click modifier is denoted by the absence of other modifiers. */
6057 mod_len
= p
- new_mods
;
6061 Lisp_Object new_name
;
6063 new_name
= make_uninit_multibyte_string (mod_len
+ base_len
,
6064 mod_len
+ base_len_byte
);
6065 bcopy (new_mods
, SDATA (new_name
), mod_len
);
6066 bcopy (base
, SDATA (new_name
) + mod_len
, base_len_byte
);
6068 return Fintern (new_name
, Qnil
);
6073 static char *modifier_names
[] =
6075 "up", "down", "drag", "click", "double", "triple", 0, 0,
6076 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
6077 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
6079 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
6081 static Lisp_Object modifier_symbols
;
6083 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
6085 lispy_modifier_list (modifiers
)
6088 Lisp_Object modifier_list
;
6091 modifier_list
= Qnil
;
6092 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
6093 if (modifiers
& (1<<i
))
6094 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
6097 return modifier_list
;
6101 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
6102 where UNMODIFIED is the unmodified form of SYMBOL,
6103 MASK is the set of modifiers present in SYMBOL's name.
6104 This is similar to parse_modifiers_uncached, but uses the cache in
6105 SYMBOL's Qevent_symbol_element_mask property, and maintains the
6106 Qevent_symbol_elements property. */
6109 parse_modifiers (symbol
)
6112 Lisp_Object elements
;
6114 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
6115 if (CONSP (elements
))
6120 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
6121 Lisp_Object unmodified
;
6124 unmodified
= Fintern (make_string (SDATA (SYMBOL_NAME (symbol
)) + end
,
6125 SBYTES (SYMBOL_NAME (symbol
)) - end
),
6128 if (modifiers
& ~INTMASK
)
6130 XSETFASTINT (mask
, modifiers
);
6131 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
6133 /* Cache the parsing results on SYMBOL. */
6134 Fput (symbol
, Qevent_symbol_element_mask
,
6136 Fput (symbol
, Qevent_symbol_elements
,
6137 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
6139 /* Since we know that SYMBOL is modifiers applied to unmodified,
6140 it would be nice to put that in unmodified's cache.
6141 But we can't, since we're not sure that parse_modifiers is
6148 /* Apply the modifiers MODIFIERS to the symbol BASE.
6149 BASE must be unmodified.
6151 This is like apply_modifiers_uncached, but uses BASE's
6152 Qmodifier_cache property, if present. It also builds
6153 Qevent_symbol_elements properties, since it has that info anyway.
6155 apply_modifiers copies the value of BASE's Qevent_kind property to
6156 the modified symbol. */
6158 apply_modifiers (modifiers
, base
)
6162 Lisp_Object cache
, index
, entry
, new_symbol
;
6164 /* Mask out upper bits. We don't know where this value's been. */
6165 modifiers
&= INTMASK
;
6167 /* The click modifier never figures into cache indices. */
6168 cache
= Fget (base
, Qmodifier_cache
);
6169 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
6170 entry
= assq_no_quit (index
, cache
);
6173 new_symbol
= XCDR (entry
);
6176 /* We have to create the symbol ourselves. */
6177 new_symbol
= apply_modifiers_uncached (modifiers
,
6178 SDATA (SYMBOL_NAME (base
)),
6179 SCHARS (SYMBOL_NAME (base
)),
6180 SBYTES (SYMBOL_NAME (base
)));
6182 /* Add the new symbol to the base's cache. */
6183 entry
= Fcons (index
, new_symbol
);
6184 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
6186 /* We have the parsing info now for free, so we could add it to
6188 XSETFASTINT (index, modifiers);
6189 Fput (new_symbol, Qevent_symbol_element_mask,
6190 Fcons (base, Fcons (index, Qnil)));
6191 Fput (new_symbol, Qevent_symbol_elements,
6192 Fcons (base, lispy_modifier_list (modifiers)));
6193 Sadly, this is only correct if `base' is indeed a base event,
6194 which is not necessarily the case. -stef */
6197 /* Make sure this symbol is of the same kind as BASE.
6199 You'd think we could just set this once and for all when we
6200 intern the symbol above, but reorder_modifiers may call us when
6201 BASE's property isn't set right; we can't assume that just
6202 because it has a Qmodifier_cache property it must have its
6203 Qevent_kind set right as well. */
6204 if (NILP (Fget (new_symbol
, Qevent_kind
)))
6208 kind
= Fget (base
, Qevent_kind
);
6210 Fput (new_symbol
, Qevent_kind
, kind
);
6217 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
6218 return a symbol with the modifiers placed in the canonical order.
6219 Canonical order is alphabetical, except for down and drag, which
6220 always come last. The 'click' modifier is never written out.
6222 Fdefine_key calls this to make sure that (for example) C-M-foo
6223 and M-C-foo end up being equivalent in the keymap. */
6226 reorder_modifiers (symbol
)
6229 /* It's hopefully okay to write the code this way, since everything
6230 will soon be in caches, and no consing will be done at all. */
6233 parsed
= parse_modifiers (symbol
);
6234 return apply_modifiers ((int) XINT (XCAR (XCDR (parsed
))),
6239 /* For handling events, we often want to produce a symbol whose name
6240 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
6241 to some base, like the name of a function key or mouse button.
6242 modify_event_symbol produces symbols of this sort.
6244 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
6245 is the name of the i'th symbol. TABLE_SIZE is the number of elements
6248 Alternatively, NAME_ALIST_OR_STEM is either an alist mapping codes
6249 into symbol names, or a string specifying a name stem used to
6250 construct a symbol name or the form `STEM-N', where N is the decimal
6251 representation of SYMBOL_NUM. NAME_ALIST_OR_STEM is used if it is
6252 non-nil; otherwise NAME_TABLE is used.
6254 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
6255 persist between calls to modify_event_symbol that it can use to
6256 store a cache of the symbols it's generated for this NAME_TABLE
6257 before. The object stored there may be a vector or an alist.
6259 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
6261 MODIFIERS is a set of modifier bits (as given in struct input_events)
6262 whose prefixes should be applied to the symbol name.
6264 SYMBOL_KIND is the value to be placed in the event_kind property of
6265 the returned symbol.
6267 The symbols we create are supposed to have an
6268 `event-symbol-elements' property, which lists the modifiers present
6269 in the symbol's name. */
6272 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist_or_stem
,
6273 name_table
, symbol_table
, table_size
)
6276 Lisp_Object symbol_kind
;
6277 Lisp_Object name_alist_or_stem
;
6279 Lisp_Object
*symbol_table
;
6280 unsigned int table_size
;
6283 Lisp_Object symbol_int
;
6285 /* Get rid of the "vendor-specific" bit here. */
6286 XSETINT (symbol_int
, symbol_num
& 0xffffff);
6288 /* Is this a request for a valid symbol? */
6289 if (symbol_num
< 0 || symbol_num
>= table_size
)
6292 if (CONSP (*symbol_table
))
6293 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
6295 /* If *symbol_table doesn't seem to be initialized properly, fix that.
6296 *symbol_table should be a lisp vector TABLE_SIZE elements long,
6297 where the Nth element is the symbol for NAME_TABLE[N], or nil if
6298 we've never used that symbol before. */
6301 if (! VECTORP (*symbol_table
)
6302 || XVECTOR (*symbol_table
)->size
!= table_size
)
6306 XSETFASTINT (size
, table_size
);
6307 *symbol_table
= Fmake_vector (size
, Qnil
);
6310 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
6313 /* Have we already used this symbol before? */
6316 /* No; let's create it. */
6317 if (CONSP (name_alist_or_stem
))
6318 value
= Fcdr_safe (Fassq (symbol_int
, name_alist_or_stem
));
6319 else if (STRINGP (name_alist_or_stem
))
6321 int len
= SBYTES (name_alist_or_stem
);
6322 char *buf
= (char *) alloca (len
+ 50);
6323 sprintf (buf
, "%s-%ld", SDATA (name_alist_or_stem
),
6324 (long) XINT (symbol_int
) + 1);
6325 value
= intern (buf
);
6327 else if (name_table
!= 0 && name_table
[symbol_num
])
6328 value
= intern (name_table
[symbol_num
]);
6330 #ifdef HAVE_WINDOW_SYSTEM
6333 char *name
= x_get_keysym_name (symbol_num
);
6335 value
= intern (name
);
6342 sprintf (buf
, "key-%d", symbol_num
);
6343 value
= intern (buf
);
6346 if (CONSP (*symbol_table
))
6347 *symbol_table
= Fcons (Fcons (symbol_int
, value
), *symbol_table
);
6349 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
6351 /* Fill in the cache entries for this symbol; this also
6352 builds the Qevent_symbol_elements property, which the user
6354 apply_modifiers (modifiers
& click_modifier
, value
);
6355 Fput (value
, Qevent_kind
, symbol_kind
);
6358 /* Apply modifiers to that symbol. */
6359 return apply_modifiers (modifiers
, value
);
6362 /* Convert a list that represents an event type,
6363 such as (ctrl meta backspace), into the usual representation of that
6364 event type as a number or a symbol. */
6366 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
6367 doc
: /* Convert the event description list EVENT-DESC to an event type.
6368 EVENT-DESC should contain one base event type (a character or symbol)
6369 and zero or more modifier names (control, meta, hyper, super, shift, alt,
6370 drag, down, double or triple). The base must be last.
6371 The return value is an event type (a character or symbol) which
6372 has the same base event type and all the specified modifiers. */)
6374 Lisp_Object event_desc
;
6382 while (CONSP (rest
))
6390 /* Given a symbol, see if it is a modifier name. */
6391 if (SYMBOLP (elt
) && CONSP (rest
))
6392 this = parse_solitary_modifier (elt
);
6396 else if (!NILP (base
))
6397 error ("Two bases given in one event");
6403 /* Let the symbol A refer to the character A. */
6404 if (SYMBOLP (base
) && SCHARS (SYMBOL_NAME (base
)) == 1)
6405 XSETINT (base
, SREF (SYMBOL_NAME (base
), 0));
6407 if (INTEGERP (base
))
6409 /* Turn (shift a) into A. */
6410 if ((modifiers
& shift_modifier
) != 0
6411 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
6413 XSETINT (base
, XINT (base
) - ('a' - 'A'));
6414 modifiers
&= ~shift_modifier
;
6417 /* Turn (control a) into C-a. */
6418 if (modifiers
& ctrl_modifier
)
6419 return make_number ((modifiers
& ~ctrl_modifier
)
6420 | make_ctrl_char (XINT (base
)));
6422 return make_number (modifiers
| XINT (base
));
6424 else if (SYMBOLP (base
))
6425 return apply_modifiers (modifiers
, base
);
6428 error ("Invalid base event");
6433 /* Try to recognize SYMBOL as a modifier name.
6434 Return the modifier flag bit, or 0 if not recognized. */
6437 parse_solitary_modifier (symbol
)
6440 Lisp_Object name
= SYMBOL_NAME (symbol
);
6442 switch (SREF (name
, 0))
6444 #define SINGLE_LETTER_MOD(BIT) \
6445 if (SBYTES (name) == 1) \
6448 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
6449 if (LEN == SBYTES (name) \
6450 && ! strncmp (SDATA (name), NAME, LEN)) \
6454 SINGLE_LETTER_MOD (alt_modifier
);
6458 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
6462 SINGLE_LETTER_MOD (ctrl_modifier
);
6466 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
6467 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
6471 SINGLE_LETTER_MOD (hyper_modifier
);
6475 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
6479 SINGLE_LETTER_MOD (meta_modifier
);
6483 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
6487 SINGLE_LETTER_MOD (shift_modifier
);
6491 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
6492 MULTI_LETTER_MOD (super_modifier
, "super", 5);
6493 SINGLE_LETTER_MOD (super_modifier
);
6497 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
6498 MULTI_LETTER_MOD (down_modifier
, "down", 4);
6499 MULTI_LETTER_MOD (double_modifier
, "double", 6);
6503 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
6506 #undef SINGLE_LETTER_MOD
6507 #undef MULTI_LETTER_MOD
6513 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
6514 Such a list is not valid as an event,
6515 but it can be a Lucid-style event type list. */
6518 lucid_event_type_list_p (object
)
6523 if (! CONSP (object
))
6526 if (EQ (XCAR (object
), Qhelp_echo
)
6527 || EQ (XCAR (object
), Qvertical_line
)
6528 || EQ (XCAR (object
), Qmode_line
)
6529 || EQ (XCAR (object
), Qheader_line
))
6532 for (tail
= object
; CONSP (tail
); tail
= XCDR (tail
))
6536 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
6543 /* Store into *addr a value nonzero if terminal input chars are available.
6544 Serves the purpose of ioctl (0, FIONREAD, addr)
6545 but works even if FIONREAD does not exist.
6546 (In fact, this may actually read some input.)
6548 If READABLE_EVENTS_DO_TIMERS_NOW is set in FLAGS, actually run
6549 timer events that are ripe.
6550 If READABLE_EVENTS_FILTER_EVENTS is set in FLAGS, ignore internal
6551 events (FOCUS_IN_EVENT).
6552 If READABLE_EVENTS_IGNORE_SQUEEZABLES is set in FLAGS, ignore mouse
6553 movements and toolkit scroll bar thumb drags. */
6556 get_input_pending (addr
, flags
)
6560 /* First of all, have we already counted some input? */
6561 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6563 /* If input is being read as it arrives, and we have none, there is none. */
6564 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
6567 /* Try to read some input and see how much we get. */
6569 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6572 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
6575 gobble_input (expected
)
6580 if (interrupt_input
)
6583 mask
= sigblock (sigmask (SIGIO
));
6584 read_avail_input (expected
);
6588 #ifdef POLL_FOR_INPUT
6589 if (read_socket_hook
&& !interrupt_input
&& poll_suppress_count
== 0)
6592 mask
= sigblock (sigmask (SIGALRM
));
6593 read_avail_input (expected
);
6599 read_avail_input (expected
);
6603 /* Put a BUFFER_SWITCH_EVENT in the buffer
6604 so that read_key_sequence will notice the new current buffer. */
6607 record_asynch_buffer_change ()
6609 struct input_event event
;
6613 event
.kind
= BUFFER_SWITCH_EVENT
;
6614 event
.frame_or_window
= Qnil
;
6618 /* We don't need a buffer-switch event unless Emacs is waiting for input.
6619 The purpose of the event is to make read_key_sequence look up the
6620 keymaps again. If we aren't in read_key_sequence, we don't need one,
6621 and the event could cause trouble by messing up (input-pending-p). */
6622 tem
= Fwaiting_for_user_input_p ();
6626 /* We never need these events if we have no asynchronous subprocesses. */
6630 /* Make sure no interrupt happens while storing the event. */
6632 if (interrupt_input
)
6635 mask
= sigblock (sigmask (SIGIO
));
6636 kbd_buffer_store_event (&event
);
6643 kbd_buffer_store_event (&event
);
6650 /* Read any terminal input already buffered up by the system
6651 into the kbd_buffer, but do not wait.
6653 EXPECTED should be nonzero if the caller knows there is some input.
6655 Except on VMS, all input is read by this function.
6656 If interrupt_input is nonzero, this function MUST be called
6657 only when SIGIO is blocked.
6659 Returns the number of keyboard chars read, or -1 meaning
6660 this is a bad time to try to read input. */
6663 read_avail_input (expected
)
6669 if (read_socket_hook
)
6672 struct input_event hold_quit
;
6674 EVENT_INIT (hold_quit
);
6675 hold_quit
.kind
= NO_EVENT
;
6677 /* No need for FIONREAD or fcntl; just say don't wait. */
6678 while (nr
= (*read_socket_hook
) (input_fd
, expected
, &hold_quit
), nr
> 0)
6683 if (hold_quit
.kind
!= NO_EVENT
)
6684 kbd_buffer_store_event (&hold_quit
);
6688 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
6689 the kbd_buffer can really hold. That may prevent loss
6690 of characters on some systems when input is stuffed at us. */
6691 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
6694 /* Determine how many characters we should *try* to read. */
6697 #else /* not WINDOWSNT */
6699 n_to_read
= dos_keysns ();
6702 #else /* not MSDOS */
6704 /* Find out how much input is available. */
6705 if (ioctl (input_fd
, FIONREAD
, &n_to_read
) < 0)
6706 /* Formerly simply reported no input, but that sometimes led to
6707 a failure of Emacs to terminate.
6708 SIGHUP seems appropriate if we can't reach the terminal. */
6709 /* ??? Is it really right to send the signal just to this process
6710 rather than to the whole process group?
6711 Perhaps on systems with FIONREAD Emacs is alone in its group. */
6713 if (! noninteractive
)
6714 kill (getpid (), SIGHUP
);
6720 if (n_to_read
> sizeof cbuf
)
6721 n_to_read
= sizeof cbuf
;
6722 #else /* no FIONREAD */
6723 #if defined (USG) || defined (DGUX) || defined(CYGWIN)
6724 /* Read some input if available, but don't wait. */
6725 n_to_read
= sizeof cbuf
;
6726 fcntl (input_fd
, F_SETFL
, O_NDELAY
);
6731 #endif /* not MSDOS */
6732 #endif /* not WINDOWSNT */
6734 /* Now read; for one reason or another, this will not block.
6735 NREAD is set to the number of chars read. */
6739 cbuf
[0] = dos_keyread ();
6742 nread
= emacs_read (input_fd
, cbuf
, n_to_read
);
6744 /* POSIX infers that processes which are not in the session leader's
6745 process group won't get SIGHUP's at logout time. BSDI adheres to
6746 this part standard and returns -1 from read (0) with errno==EIO
6747 when the control tty is taken away.
6748 Jeffrey Honig <jch@bsdi.com> says this is generally safe. */
6749 if (nread
== -1 && errno
== EIO
)
6751 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
6752 /* The kernel sometimes fails to deliver SIGHUP for ptys.
6753 This looks incorrect, but it isn't, because _BSD causes
6754 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
6755 and that causes a value other than 0 when there is no input. */
6761 /* We used to retry the read if it was interrupted.
6762 But this does the wrong thing when O_NDELAY causes
6763 an EAGAIN error. Does anybody know of a situation
6764 where a retry is actually needed? */
6766 nread
< 0 && (errno
== EAGAIN
6780 #if defined (USG) || defined (DGUX) || defined (CYGWIN)
6781 fcntl (input_fd
, F_SETFL
, 0);
6782 #endif /* USG or DGUX or CYGWIN */
6783 #endif /* no FIONREAD */
6784 for (i
= 0; i
< nread
; i
++)
6786 struct input_event buf
;
6788 buf
.kind
= ASCII_KEYSTROKE_EVENT
;
6790 if (meta_key
== 1 && (cbuf
[i
] & 0x80))
6791 buf
.modifiers
= meta_modifier
;
6796 buf
.frame_or_window
= selected_frame
;
6799 kbd_buffer_store_event (&buf
);
6800 /* Don't look at input that follows a C-g too closely.
6801 This reduces lossage due to autorepeat on C-g. */
6802 if (buf
.kind
== ASCII_KEYSTROKE_EVENT
6803 && buf
.code
== quit_char
)
6810 #endif /* not VMS */
6813 handle_async_input ()
6816 extern int select_alarmed
;
6819 interrupt_input_pending
= 0;
6824 nread
= read_avail_input (1);
6825 /* -1 means it's not ok to read the input now.
6826 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
6827 0 means there was no keyboard input available. */
6832 select_alarmed
= 1; /* Force the select emulator back to life */
6837 #ifdef SIGIO /* for entire page */
6838 /* Note SIGIO has been undef'd if FIONREAD is missing. */
6841 input_available_signal (signo
)
6844 /* Must preserve main program's value of errno. */
6845 int old_errno
= errno
;
6846 #if defined (USG) && !defined (POSIX_SIGNALS)
6847 /* USG systems forget handlers when they are used;
6848 must reestablish each time */
6849 signal (signo
, input_available_signal
);
6857 interrupt_input_pending
= 1;
6859 SIGNAL_THREAD_CHECK (signo
);
6862 if (input_available_clear_time
)
6863 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6866 handle_async_input ();
6876 /* Send ourselves a SIGIO.
6878 This function exists so that the UNBLOCK_INPUT macro in
6879 blockinput.h can have some way to take care of input we put off
6880 dealing with, without assuming that every file which uses
6881 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
6883 reinvoke_input_signal ()
6886 handle_async_input ();
6892 static void menu_bar_item
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
, void*));
6893 static Lisp_Object menu_bar_one_keymap_changed_items
;
6895 /* These variables hold the vector under construction within
6896 menu_bar_items and its subroutines, and the current index
6897 for storing into that vector. */
6898 static Lisp_Object menu_bar_items_vector
;
6899 static int menu_bar_items_index
;
6901 /* Return a vector of menu items for a menu bar, appropriate
6902 to the current buffer. Each item has three elements in the vector:
6905 OLD is an old vector we can optionally reuse, or nil. */
6908 menu_bar_items (old
)
6911 /* The number of keymaps we're scanning right now, and the number of
6912 keymaps we have allocated space for. */
6915 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
6916 in the current keymaps, or nil where it is not a prefix. */
6919 Lisp_Object def
, tail
;
6928 /* In order to build the menus, we need to call the keymap
6929 accessors. They all call QUIT. But this function is called
6930 during redisplay, during which a quit is fatal. So inhibit
6931 quitting while building the menus.
6932 We do this instead of specbind because (1) errors will clear it anyway
6933 and (2) this avoids risk of specpdl overflow. */
6934 oquit
= Vinhibit_quit
;
6938 menu_bar_items_vector
= old
;
6940 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
6941 menu_bar_items_index
= 0;
6943 /* Build our list of keymaps.
6944 If we recognize a function key and replace its escape sequence in
6945 keybuf with its symbol, or if the sequence starts with a mouse
6946 click and we need to switch buffers, we jump back here to rebuild
6947 the initial keymaps from the current buffer. */
6951 /* Should overriding-terminal-local-map and overriding-local-map apply? */
6952 if (!NILP (Voverriding_local_map_menu_flag
))
6954 /* Yes, use them (if non-nil) as well as the global map. */
6955 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
6957 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
6958 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
6959 if (!NILP (Voverriding_local_map
))
6960 maps
[nmaps
++] = Voverriding_local_map
;
6964 /* No, so use major and minor mode keymaps and keymap property.
6965 Note that menu-bar bindings in the local-map and keymap
6966 properties may not work reliable, as they are only
6967 recognized when the menu-bar (or mode-line) is updated,
6968 which does not normally happen after every command. */
6971 nminor
= current_minor_maps (NULL
, &tmaps
);
6972 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
6974 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
6975 maps
[nmaps
++] = tem
;
6976 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
6978 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
6980 maps
[nmaps
++] = current_global_map
;
6983 /* Look up in each map the dummy prefix key `menu-bar'. */
6987 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
6988 if (!NILP (maps
[mapno
]))
6990 def
= get_keymap (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0, 1),
6994 menu_bar_one_keymap_changed_items
= Qnil
;
6995 map_keymap (def
, menu_bar_item
, Qnil
, NULL
, 1);
6999 /* Move to the end those items that should be at the end. */
7001 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCDR (tail
))
7004 int end
= menu_bar_items_index
;
7006 for (i
= 0; i
< end
; i
+= 4)
7007 if (EQ (XCAR (tail
), XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7009 Lisp_Object tem0
, tem1
, tem2
, tem3
;
7010 /* Move the item at index I to the end,
7011 shifting all the others forward. */
7012 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
7013 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
7014 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7015 tem3
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3];
7017 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7018 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7019 (end
- i
- 4) * sizeof (Lisp_Object
));
7020 XVECTOR (menu_bar_items_vector
)->contents
[end
- 4] = tem0
;
7021 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem1
;
7022 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem2
;
7023 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem3
;
7028 /* Add nil, nil, nil, nil at the end. */
7029 i
= menu_bar_items_index
;
7030 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7033 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7034 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7035 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7036 menu_bar_items_vector
= tem
;
7038 /* Add this item. */
7039 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7040 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7041 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7042 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7043 menu_bar_items_index
= i
;
7045 Vinhibit_quit
= oquit
;
7046 return menu_bar_items_vector
;
7049 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
7050 If there's already an item for KEY, add this DEF to it. */
7052 Lisp_Object item_properties
;
7055 menu_bar_item (key
, item
, dummy1
, dummy2
)
7056 Lisp_Object key
, item
, dummy1
;
7059 struct gcpro gcpro1
;
7063 if (EQ (item
, Qundefined
))
7065 /* If a map has an explicit `undefined' as definition,
7066 discard any previously made menu bar item. */
7068 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7069 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7071 if (menu_bar_items_index
> i
+ 4)
7072 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7073 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7074 (menu_bar_items_index
- i
- 4) * sizeof (Lisp_Object
));
7075 menu_bar_items_index
-= 4;
7079 /* If this keymap has already contributed to this KEY,
7080 don't contribute to it a second time. */
7081 tem
= Fmemq (key
, menu_bar_one_keymap_changed_items
);
7082 if (!NILP (tem
) || NILP (item
))
7085 menu_bar_one_keymap_changed_items
7086 = Fcons (key
, menu_bar_one_keymap_changed_items
);
7088 /* We add to menu_bar_one_keymap_changed_items before doing the
7089 parse_menu_item, so that if it turns out it wasn't a menu item,
7090 it still correctly hides any further menu item. */
7092 i
= parse_menu_item (item
, 0, 1);
7097 item
= XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_DEF
];
7099 /* Find any existing item for this KEY. */
7100 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7101 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7104 /* If we did not find this KEY, add it at the end. */
7105 if (i
== menu_bar_items_index
)
7107 /* If vector is too small, get a bigger one. */
7108 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7111 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7112 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7113 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7114 menu_bar_items_vector
= tem
;
7117 /* Add this item. */
7118 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
7119 XVECTOR (menu_bar_items_vector
)->contents
[i
++]
7120 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
7121 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (item
, Qnil
);
7122 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = make_number (0);
7123 menu_bar_items_index
= i
;
7125 /* We did find an item for this KEY. Add ITEM to its list of maps. */
7129 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7130 /* If the new and the old items are not both keymaps,
7131 the lookup will only find `item'. */
7132 item
= Fcons (item
, KEYMAPP (item
) && KEYMAPP (XCAR (old
)) ? old
: Qnil
);
7133 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = item
;
7137 /* This is used as the handler when calling menu_item_eval_property. */
7139 menu_item_eval_property_1 (arg
)
7142 /* If we got a quit from within the menu computation,
7143 quit all the way out of it. This takes care of C-] in the debugger. */
7144 if (CONSP (arg
) && EQ (XCAR (arg
), Qquit
))
7145 Fsignal (Qquit
, Qnil
);
7150 /* Evaluate an expression and return the result (or nil if something
7151 went wrong). Used to evaluate dynamic parts of menu items. */
7153 menu_item_eval_property (sexpr
)
7156 int count
= SPECPDL_INDEX ();
7158 specbind (Qinhibit_redisplay
, Qt
);
7159 val
= internal_condition_case_1 (Feval
, sexpr
, Qerror
,
7160 menu_item_eval_property_1
);
7161 return unbind_to (count
, val
);
7164 /* This function parses a menu item and leaves the result in the
7165 vector item_properties.
7166 ITEM is a key binding, a possible menu item.
7167 If NOTREAL is nonzero, only check for equivalent key bindings, don't
7168 evaluate dynamic expressions in the menu item.
7169 INMENUBAR is > 0 when this is considered for an entry in a menu bar
7171 INMENUBAR is < 0 when this is considered for an entry in a keyboard menu.
7172 parse_menu_item returns true if the item is a menu item and false
7176 parse_menu_item (item
, notreal
, inmenubar
)
7178 int notreal
, inmenubar
;
7180 Lisp_Object def
, tem
, item_string
, start
;
7181 Lisp_Object cachelist
;
7183 Lisp_Object keyhint
;
7194 /* Create item_properties vector if necessary. */
7195 if (NILP (item_properties
))
7197 = Fmake_vector (make_number (ITEM_PROPERTY_ENABLE
+ 1), Qnil
);
7199 /* Initialize optional entries. */
7200 for (i
= ITEM_PROPERTY_DEF
; i
< ITEM_PROPERTY_ENABLE
; i
++)
7201 AREF (item_properties
, i
) = Qnil
;
7202 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = Qt
;
7204 /* Save the item here to protect it from GC. */
7205 AREF (item_properties
, ITEM_PROPERTY_ITEM
) = item
;
7207 item_string
= XCAR (item
);
7211 if (STRINGP (item_string
))
7213 /* Old format menu item. */
7214 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7216 /* Maybe help string. */
7217 if (CONSP (item
) && STRINGP (XCAR (item
)))
7219 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7224 /* Maybe key binding cache. */
7225 if (CONSP (item
) && CONSP (XCAR (item
))
7226 && (NILP (XCAR (XCAR (item
)))
7227 || VECTORP (XCAR (XCAR (item
)))))
7229 cachelist
= XCAR (item
);
7233 /* This is the real definition--the function to run. */
7234 AREF (item_properties
, ITEM_PROPERTY_DEF
) = item
;
7236 /* Get enable property, if any. */
7239 tem
= Fget (item
, Qmenu_enable
);
7241 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7244 else if (EQ (item_string
, Qmenu_item
) && CONSP (item
))
7246 /* New format menu item. */
7247 AREF (item_properties
, ITEM_PROPERTY_NAME
) = XCAR (item
);
7248 start
= XCDR (item
);
7251 /* We have a real binding. */
7252 AREF (item_properties
, ITEM_PROPERTY_DEF
) = XCAR (start
);
7254 item
= XCDR (start
);
7255 /* Is there a cache list with key equivalences. */
7256 if (CONSP (item
) && CONSP (XCAR (item
)))
7258 cachelist
= XCAR (item
);
7262 /* Parse properties. */
7263 while (CONSP (item
) && CONSP (XCDR (item
)))
7268 if (EQ (tem
, QCenable
))
7269 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = XCAR (item
);
7270 else if (EQ (tem
, QCvisible
) && !notreal
)
7272 /* If got a visible property and that evaluates to nil
7273 then ignore this item. */
7274 tem
= menu_item_eval_property (XCAR (item
));
7278 else if (EQ (tem
, QChelp
))
7279 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7280 else if (EQ (tem
, QCfilter
))
7282 else if (EQ (tem
, QCkey_sequence
))
7285 if (NILP (cachelist
)
7286 && (SYMBOLP (tem
) || STRINGP (tem
) || VECTORP (tem
)))
7287 /* Be GC protected. Set keyhint to item instead of tem. */
7290 else if (EQ (tem
, QCkeys
))
7293 if (CONSP (tem
) || (STRINGP (tem
) && NILP (cachelist
)))
7294 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7296 else if (EQ (tem
, QCbutton
) && CONSP (XCAR (item
)))
7301 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7303 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7305 AREF (item_properties
, ITEM_PROPERTY_TYPE
)
7312 else if (inmenubar
|| !NILP (start
))
7316 return 0; /* not a menu item */
7318 /* If item string is not a string, evaluate it to get string.
7319 If we don't get a string, skip this item. */
7320 item_string
= AREF (item_properties
, ITEM_PROPERTY_NAME
);
7321 if (!(STRINGP (item_string
) || notreal
))
7323 item_string
= menu_item_eval_property (item_string
);
7324 if (!STRINGP (item_string
))
7326 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7329 /* If got a filter apply it on definition. */
7330 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7333 def
= menu_item_eval_property (list2 (XCAR (filter
),
7334 list2 (Qquote
, def
)));
7336 AREF (item_properties
, ITEM_PROPERTY_DEF
) = def
;
7339 /* Enable or disable selection of item. */
7340 tem
= AREF (item_properties
, ITEM_PROPERTY_ENABLE
);
7346 tem
= menu_item_eval_property (tem
);
7347 if (inmenubar
&& NILP (tem
))
7348 return 0; /* Ignore disabled items in menu bar. */
7349 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7352 /* If we got no definition, this item is just unselectable text which
7353 is OK in a submenu but not in the menubar. */
7355 return (inmenubar
? 0 : 1);
7357 /* See if this is a separate pane or a submenu. */
7358 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7359 tem
= get_keymap (def
, 0, 1);
7360 /* For a subkeymap, just record its details and exit. */
7363 AREF (item_properties
, ITEM_PROPERTY_MAP
) = tem
;
7364 AREF (item_properties
, ITEM_PROPERTY_DEF
) = tem
;
7368 /* At the top level in the menu bar, do likewise for commands also.
7369 The menu bar does not display equivalent key bindings anyway.
7370 ITEM_PROPERTY_DEF is already set up properly. */
7374 /* This is a command. See if there is an equivalent key binding. */
7375 if (NILP (cachelist
))
7377 /* We have to create a cachelist. */
7378 CHECK_IMPURE (start
);
7379 XSETCDR (start
, Fcons (Fcons (Qnil
, Qnil
), XCDR (start
)));
7380 cachelist
= XCAR (XCDR (start
));
7382 tem
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7383 if (!NILP (keyhint
))
7385 XSETCAR (cachelist
, XCAR (keyhint
));
7388 else if (STRINGP (tem
))
7390 XSETCDR (cachelist
, Fsubstitute_command_keys (tem
));
7391 XSETCAR (cachelist
, Qt
);
7395 tem
= XCAR (cachelist
);
7402 tem
= Fkey_binding (tem
, Qnil
, Qnil
);
7404 prefix
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7407 def
= XCAR (prefix
);
7408 prefix
= XCDR (prefix
);
7411 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7413 if (NILP (XCAR (cachelist
))) /* Have no saved key. */
7415 if (newcache
/* Always check first time. */
7416 /* Should we check everything when precomputing key
7418 /* If something had no key binding before, don't recheck it
7419 because that is too slow--except if we have a list of
7420 rebound commands in Vdefine_key_rebound_commands, do
7421 recheck any command that appears in that list. */
7422 || (CONSP (Vdefine_key_rebound_commands
)
7423 && !NILP (Fmemq (def
, Vdefine_key_rebound_commands
))))
7426 /* We had a saved key. Is it still bound to the command? */
7429 /* If the command is an alias for another
7430 (such as lmenu.el set it up), check if the
7431 original command matches the cached command. */
7432 && !(SYMBOLP (def
) && EQ (tem
, XSYMBOL (def
)->function
))))
7433 chkcache
= 1; /* Need to recompute key binding. */
7437 /* Recompute equivalent key binding. If the command is an alias
7438 for another (such as lmenu.el set it up), see if the original
7439 command name has equivalent keys. Otherwise look up the
7440 specified command itself. We don't try both, because that
7441 makes lmenu menus slow. */
7443 && SYMBOLP (XSYMBOL (def
)->function
)
7444 && ! NILP (Fget (def
, Qmenu_alias
)))
7445 def
= XSYMBOL (def
)->function
;
7446 tem
= Fwhere_is_internal (def
, Qnil
, Qt
, Qnil
, Qt
);
7447 XSETCAR (cachelist
, tem
);
7450 XSETCDR (cachelist
, Qnil
);
7454 else if (!NILP (keyhint
) && !NILP (XCAR (cachelist
)))
7456 tem
= XCAR (cachelist
);
7460 newcache
= chkcache
;
7463 tem
= Fkey_description (tem
, Qnil
);
7466 if (STRINGP (XCAR (prefix
)))
7467 tem
= concat2 (XCAR (prefix
), tem
);
7468 if (STRINGP (XCDR (prefix
)))
7469 tem
= concat2 (tem
, XCDR (prefix
));
7471 XSETCDR (cachelist
, tem
);
7475 tem
= XCDR (cachelist
);
7476 if (newcache
&& !NILP (tem
))
7478 tem
= concat3 (build_string (" ("), tem
, build_string (")"));
7479 XSETCDR (cachelist
, tem
);
7482 /* If we only want to precompute equivalent key bindings, stop here. */
7486 /* If we have an equivalent key binding, use that. */
7487 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7489 /* Include this when menu help is implemented.
7490 tem = XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP];
7491 if (!(NILP (tem) || STRINGP (tem)))
7493 tem = menu_item_eval_property (tem);
7496 XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP] = tem;
7500 /* Handle radio buttons or toggle boxes. */
7501 tem
= AREF (item_properties
, ITEM_PROPERTY_SELECTED
);
7503 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7504 = menu_item_eval_property (tem
);
7511 /***********************************************************************
7513 ***********************************************************************/
7515 /* A vector holding tool bar items while they are parsed in function
7516 tool_bar_items. Each item occupies TOOL_BAR_ITEM_NSCLOTS elements
7519 static Lisp_Object tool_bar_items_vector
;
7521 /* A vector holding the result of parse_tool_bar_item. Layout is like
7522 the one for a single item in tool_bar_items_vector. */
7524 static Lisp_Object tool_bar_item_properties
;
7526 /* Next free index in tool_bar_items_vector. */
7528 static int ntool_bar_items
;
7530 /* The symbols `tool-bar', and `:image'. */
7532 extern Lisp_Object Qtool_bar
;
7533 Lisp_Object QCimage
;
7535 /* Function prototypes. */
7537 static void init_tool_bar_items
P_ ((Lisp_Object
));
7538 static void process_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7539 static int parse_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7540 static void append_tool_bar_item
P_ ((void));
7543 /* Return a vector of tool bar items for keymaps currently in effect.
7544 Reuse vector REUSE if non-nil. Return in *NITEMS the number of
7545 tool bar items found. */
7548 tool_bar_items (reuse
, nitems
)
7559 /* In order to build the menus, we need to call the keymap
7560 accessors. They all call QUIT. But this function is called
7561 during redisplay, during which a quit is fatal. So inhibit
7562 quitting while building the menus. We do this instead of
7563 specbind because (1) errors will clear it anyway and (2) this
7564 avoids risk of specpdl overflow. */
7565 oquit
= Vinhibit_quit
;
7568 /* Initialize tool_bar_items_vector and protect it from GC. */
7569 init_tool_bar_items (reuse
);
7571 /* Build list of keymaps in maps. Set nmaps to the number of maps
7574 /* Should overriding-terminal-local-map and overriding-local-map apply? */
7575 if (!NILP (Voverriding_local_map_menu_flag
))
7577 /* Yes, use them (if non-nil) as well as the global map. */
7578 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
7580 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
7581 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
7582 if (!NILP (Voverriding_local_map
))
7583 maps
[nmaps
++] = Voverriding_local_map
;
7587 /* No, so use major and minor mode keymaps and keymap property.
7588 Note that tool-bar bindings in the local-map and keymap
7589 properties may not work reliable, as they are only
7590 recognized when the tool-bar (or mode-line) is updated,
7591 which does not normally happen after every command. */
7594 nminor
= current_minor_maps (NULL
, &tmaps
);
7595 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
7597 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
7598 maps
[nmaps
++] = tem
;
7599 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
7601 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
7604 /* Add global keymap at the end. */
7605 maps
[nmaps
++] = current_global_map
;
7607 /* Process maps in reverse order and look up in each map the prefix
7609 for (i
= nmaps
- 1; i
>= 0; --i
)
7610 if (!NILP (maps
[i
]))
7614 keymap
= get_keymap (access_keymap (maps
[i
], Qtool_bar
, 1, 0, 1), 0, 1);
7619 /* KEYMAP is a list `(keymap (KEY . BINDING) ...)'. */
7620 for (tail
= keymap
; CONSP (tail
); tail
= XCDR (tail
))
7622 Lisp_Object keydef
= XCAR (tail
);
7624 process_tool_bar_item (XCAR (keydef
), XCDR (keydef
));
7629 Vinhibit_quit
= oquit
;
7630 *nitems
= ntool_bar_items
/ TOOL_BAR_ITEM_NSLOTS
;
7631 return tool_bar_items_vector
;
7635 /* Process the definition of KEY which is DEF. */
7638 process_tool_bar_item (key
, def
)
7639 Lisp_Object key
, def
;
7642 extern Lisp_Object Qundefined
;
7643 struct gcpro gcpro1
, gcpro2
;
7645 /* Protect KEY and DEF from GC because parse_tool_bar_item may call
7649 if (EQ (def
, Qundefined
))
7651 /* If a map has an explicit `undefined' as definition,
7652 discard any previously made item. */
7653 for (i
= 0; i
< ntool_bar_items
; i
+= TOOL_BAR_ITEM_NSLOTS
)
7655 Lisp_Object
*v
= XVECTOR (tool_bar_items_vector
)->contents
+ i
;
7657 if (EQ (key
, v
[TOOL_BAR_ITEM_KEY
]))
7659 if (ntool_bar_items
> i
+ TOOL_BAR_ITEM_NSLOTS
)
7660 bcopy (v
+ TOOL_BAR_ITEM_NSLOTS
, v
,
7661 ((ntool_bar_items
- i
- TOOL_BAR_ITEM_NSLOTS
)
7662 * sizeof (Lisp_Object
)));
7663 ntool_bar_items
-= TOOL_BAR_ITEM_NSLOTS
;
7668 else if (parse_tool_bar_item (key
, def
))
7669 /* Append a new tool bar item to tool_bar_items_vector. Accept
7670 more than one definition for the same key. */
7671 append_tool_bar_item ();
7677 /* Parse a tool bar item specification ITEM for key KEY and return the
7678 result in tool_bar_item_properties. Value is zero if ITEM is
7681 ITEM is a list `(menu-item CAPTION BINDING PROPS...)'.
7683 CAPTION is the caption of the item, If it's not a string, it is
7684 evaluated to get a string.
7686 BINDING is the tool bar item's binding. Tool-bar items with keymaps
7687 as binding are currently ignored.
7689 The following properties are recognized:
7693 FORM is evaluated and specifies whether the tool bar item is
7694 enabled or disabled.
7698 FORM is evaluated and specifies whether the tool bar item is visible.
7700 - `:filter FUNCTION'
7702 FUNCTION is invoked with one parameter `(quote BINDING)'. Its
7703 result is stored as the new binding.
7705 - `:button (TYPE SELECTED)'
7707 TYPE must be one of `:radio' or `:toggle'. SELECTED is evaluated
7708 and specifies whether the button is selected (pressed) or not.
7712 IMAGES is either a single image specification or a vector of four
7713 image specifications. See enum tool_bar_item_images.
7715 - `:help HELP-STRING'.
7717 Gives a help string to display for the tool bar item. */
7720 parse_tool_bar_item (key
, item
)
7721 Lisp_Object key
, item
;
7723 /* Access slot with index IDX of vector tool_bar_item_properties. */
7724 #define PROP(IDX) XVECTOR (tool_bar_item_properties)->contents[IDX]
7726 Lisp_Object filter
= Qnil
;
7727 Lisp_Object caption
;
7730 /* Defininition looks like `(menu-item CAPTION BINDING PROPS...)'.
7731 Rule out items that aren't lists, don't start with
7732 `menu-item' or whose rest following `tool-bar-item' is not a
7735 || !EQ (XCAR (item
), Qmenu_item
)
7736 || (item
= XCDR (item
),
7740 /* Create tool_bar_item_properties vector if necessary. Reset it to
7742 if (VECTORP (tool_bar_item_properties
))
7744 for (i
= 0; i
< TOOL_BAR_ITEM_NSLOTS
; ++i
)
7748 tool_bar_item_properties
7749 = Fmake_vector (make_number (TOOL_BAR_ITEM_NSLOTS
), Qnil
);
7752 PROP (TOOL_BAR_ITEM_KEY
) = key
;
7753 PROP (TOOL_BAR_ITEM_ENABLED_P
) = Qt
;
7755 /* Get the caption of the item. If the caption is not a string,
7756 evaluate it to get a string. If we don't get a string, skip this
7758 caption
= XCAR (item
);
7759 if (!STRINGP (caption
))
7761 caption
= menu_item_eval_property (caption
);
7762 if (!STRINGP (caption
))
7765 PROP (TOOL_BAR_ITEM_CAPTION
) = caption
;
7767 /* Give up if rest following the caption is not a list. */
7772 /* Store the binding. */
7773 PROP (TOOL_BAR_ITEM_BINDING
) = XCAR (item
);
7776 /* Ignore cached key binding, if any. */
7777 if (CONSP (item
) && CONSP (XCAR (item
)))
7780 /* Process the rest of the properties. */
7781 for (; CONSP (item
) && CONSP (XCDR (item
)); item
= XCDR (XCDR (item
)))
7783 Lisp_Object key
, value
;
7786 value
= XCAR (XCDR (item
));
7788 if (EQ (key
, QCenable
))
7789 /* `:enable FORM'. */
7790 PROP (TOOL_BAR_ITEM_ENABLED_P
) = value
;
7791 else if (EQ (key
, QCvisible
))
7793 /* `:visible FORM'. If got a visible property and that
7794 evaluates to nil then ignore this item. */
7795 if (NILP (menu_item_eval_property (value
)))
7798 else if (EQ (key
, QChelp
))
7799 /* `:help HELP-STRING'. */
7800 PROP (TOOL_BAR_ITEM_HELP
) = value
;
7801 else if (EQ (key
, QCfilter
))
7802 /* ':filter FORM'. */
7804 else if (EQ (key
, QCbutton
) && CONSP (value
))
7806 /* `:button (TYPE . SELECTED)'. */
7807 Lisp_Object type
, selected
;
7809 type
= XCAR (value
);
7810 selected
= XCDR (value
);
7811 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7813 PROP (TOOL_BAR_ITEM_SELECTED_P
) = selected
;
7814 PROP (TOOL_BAR_ITEM_TYPE
) = type
;
7817 else if (EQ (key
, QCimage
)
7819 || (VECTORP (value
) && XVECTOR (value
)->size
== 4)))
7820 /* Value is either a single image specification or a vector
7821 of 4 such specifications for the different button states. */
7822 PROP (TOOL_BAR_ITEM_IMAGES
) = value
;
7825 /* If got a filter apply it on binding. */
7827 PROP (TOOL_BAR_ITEM_BINDING
)
7828 = menu_item_eval_property (list2 (filter
,
7830 PROP (TOOL_BAR_ITEM_BINDING
))));
7832 /* See if the binding is a keymap. Give up if it is. */
7833 if (CONSP (get_keymap (PROP (TOOL_BAR_ITEM_BINDING
), 0, 1)))
7836 /* Enable or disable selection of item. */
7837 if (!EQ (PROP (TOOL_BAR_ITEM_ENABLED_P
), Qt
))
7838 PROP (TOOL_BAR_ITEM_ENABLED_P
)
7839 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_ENABLED_P
));
7841 /* Handle radio buttons or toggle boxes. */
7842 if (!NILP (PROP (TOOL_BAR_ITEM_SELECTED_P
)))
7843 PROP (TOOL_BAR_ITEM_SELECTED_P
)
7844 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_SELECTED_P
));
7852 /* Initialize tool_bar_items_vector. REUSE, if non-nil, is a vector
7853 that can be reused. */
7856 init_tool_bar_items (reuse
)
7859 if (VECTORP (reuse
))
7860 tool_bar_items_vector
= reuse
;
7862 tool_bar_items_vector
= Fmake_vector (make_number (64), Qnil
);
7863 ntool_bar_items
= 0;
7867 /* Append parsed tool bar item properties from
7868 tool_bar_item_properties */
7871 append_tool_bar_item ()
7873 Lisp_Object
*to
, *from
;
7875 /* Enlarge tool_bar_items_vector if necessary. */
7876 if (ntool_bar_items
+ TOOL_BAR_ITEM_NSLOTS
7877 >= XVECTOR (tool_bar_items_vector
)->size
)
7879 Lisp_Object new_vector
;
7880 int old_size
= XVECTOR (tool_bar_items_vector
)->size
;
7882 new_vector
= Fmake_vector (make_number (2 * old_size
), Qnil
);
7883 bcopy (XVECTOR (tool_bar_items_vector
)->contents
,
7884 XVECTOR (new_vector
)->contents
,
7885 old_size
* sizeof (Lisp_Object
));
7886 tool_bar_items_vector
= new_vector
;
7889 /* Append entries from tool_bar_item_properties to the end of
7890 tool_bar_items_vector. */
7891 to
= XVECTOR (tool_bar_items_vector
)->contents
+ ntool_bar_items
;
7892 from
= XVECTOR (tool_bar_item_properties
)->contents
;
7893 bcopy (from
, to
, TOOL_BAR_ITEM_NSLOTS
* sizeof *to
);
7894 ntool_bar_items
+= TOOL_BAR_ITEM_NSLOTS
;
7901 /* Read a character using menus based on maps in the array MAPS.
7902 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
7903 Return t if we displayed a menu but the user rejected it.
7905 PREV_EVENT is the previous input event, or nil if we are reading
7906 the first event of a key sequence.
7908 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
7909 if we used a mouse menu to read the input, or zero otherwise. If
7910 USED_MOUSE_MENU is null, we don't dereference it.
7912 The prompting is done based on the prompt-string of the map
7913 and the strings associated with various map elements.
7915 This can be done with X menus or with menus put in the minibuf.
7916 These are done in different ways, depending on how the input will be read.
7917 Menus using X are done after auto-saving in read-char, getting the input
7918 event from Fx_popup_menu; menus using the minibuf use read_char recursively
7919 and do auto-saving in the inner call of read_char. */
7922 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
7925 Lisp_Object prev_event
;
7926 int *used_mouse_menu
;
7929 register Lisp_Object name
= Qnil
;
7931 if (used_mouse_menu
)
7932 *used_mouse_menu
= 0;
7934 /* Use local over global Menu maps */
7936 if (! menu_prompting
)
7939 /* Optionally disregard all but the global map. */
7940 if (inhibit_local_menu_bar_menus
)
7942 maps
+= (nmaps
- 1);
7946 /* Get the menu name from the first map that has one (a prompt string). */
7947 for (mapno
= 0; mapno
< nmaps
; mapno
++)
7949 name
= Fkeymap_prompt (maps
[mapno
]);
7954 /* If we don't have any menus, just read a character normally. */
7955 if (!STRINGP (name
))
7959 /* If we got to this point via a mouse click,
7960 use a real menu for mouse selection. */
7961 if (EVENT_HAS_PARAMETERS (prev_event
)
7962 && !EQ (XCAR (prev_event
), Qmenu_bar
)
7963 && !EQ (XCAR (prev_event
), Qtool_bar
))
7965 /* Display the menu and get the selection. */
7966 Lisp_Object
*realmaps
7967 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
7971 /* Use the maps that are not nil. */
7972 for (mapno
= 0; mapno
< nmaps
; mapno
++)
7973 if (!NILP (maps
[mapno
]))
7974 realmaps
[nmaps1
++] = maps
[mapno
];
7976 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
7981 record_menu_key (XCAR (value
));
7983 /* If we got multiple events, unread all but
7985 There is no way to prevent those unread events
7986 from showing up later in last_nonmenu_event.
7987 So turn symbol and integer events into lists,
7988 to indicate that they came from a mouse menu,
7989 so that when present in last_nonmenu_event
7990 they won't confuse things. */
7991 for (tem
= XCDR (value
); !NILP (tem
); tem
= XCDR (tem
))
7993 record_menu_key (XCAR (tem
));
7994 if (SYMBOLP (XCAR (tem
))
7995 || INTEGERP (XCAR (tem
)))
7996 XSETCAR (tem
, Fcons (XCAR (tem
), Qdisabled
));
7999 /* If we got more than one event, put all but the first
8000 onto this list to be read later.
8001 Return just the first event now. */
8002 Vunread_command_events
8003 = nconc2 (XCDR (value
), Vunread_command_events
);
8004 value
= XCAR (value
);
8006 else if (NILP (value
))
8008 if (used_mouse_menu
)
8009 *used_mouse_menu
= 1;
8012 #endif /* HAVE_MENUS */
8016 /* Buffer in use so far for the minibuf prompts for menu keymaps.
8017 We make this bigger when necessary, and never free it. */
8018 static char *read_char_minibuf_menu_text
;
8019 /* Size of that buffer. */
8020 static int read_char_minibuf_menu_width
;
8023 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
8029 register Lisp_Object name
;
8031 /* FIXME: Use the minibuffer's frame width. */
8032 int width
= FRAME_COLS (SELECTED_FRAME ()) - 4;
8035 Lisp_Object rest
, vector
;
8041 if (! menu_prompting
)
8044 /* Make sure we have a big enough buffer for the menu text. */
8045 if (read_char_minibuf_menu_text
== 0)
8047 read_char_minibuf_menu_width
= width
+ 4;
8048 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
8050 else if (width
+ 4 > read_char_minibuf_menu_width
)
8052 read_char_minibuf_menu_width
= width
+ 4;
8053 read_char_minibuf_menu_text
8054 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
8056 menu
= read_char_minibuf_menu_text
;
8058 /* Get the menu name from the first map that has one (a prompt string). */
8059 for (mapno
= 0; mapno
< nmaps
; mapno
++)
8061 name
= Fkeymap_prompt (maps
[mapno
]);
8066 /* If we don't have any menus, just read a character normally. */
8067 if (!STRINGP (name
))
8070 /* Prompt string always starts with map's prompt, and a space. */
8071 strcpy (menu
, SDATA (name
));
8072 nlength
= SBYTES (name
);
8073 menu
[nlength
++] = ':';
8074 menu
[nlength
++] = ' ';
8077 /* Start prompting at start of first map. */
8081 /* Present the documented bindings, a line at a time. */
8088 Lisp_Object orig_defn_macro
;
8090 /* Loop over elements of map. */
8095 /* If reached end of map, start at beginning of next map. */
8099 /* At end of last map, wrap around to first map if just starting,
8100 or end this line if already have something on it. */
8104 if (notfirst
|| nobindings
) break;
8109 /* Look at the next element of the map. */
8111 elt
= XVECTOR (vector
)->contents
[idx
];
8113 elt
= Fcar_safe (rest
);
8115 if (idx
< 0 && VECTORP (elt
))
8117 /* If we found a dense table in the keymap,
8118 advanced past it, but start scanning its contents. */
8119 rest
= Fcdr_safe (rest
);
8125 /* An ordinary element. */
8126 Lisp_Object event
, tem
;
8130 event
= Fcar_safe (elt
); /* alist */
8131 elt
= Fcdr_safe (elt
);
8135 XSETINT (event
, idx
); /* vector */
8138 /* Ignore the element if it has no prompt string. */
8139 if (INTEGERP (event
) && parse_menu_item (elt
, 0, -1))
8141 /* 1 if the char to type matches the string. */
8143 Lisp_Object upcased_event
, downcased_event
;
8144 Lisp_Object desc
= Qnil
;
8146 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
8148 upcased_event
= Fupcase (event
);
8149 downcased_event
= Fdowncase (event
);
8150 char_matches
= (XINT (upcased_event
) == SREF (s
, 0)
8151 || XINT (downcased_event
) == SREF (s
, 0));
8153 desc
= Fsingle_key_description (event
, Qnil
);
8155 #if 0 /* It is redundant to list the equivalent key bindings because
8156 the prefix is what the user has already typed. */
8158 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_KEYEQ
];
8160 /* Insert equivalent keybinding. */
8161 s
= concat2 (s
, tem
);
8164 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_TYPE
];
8165 if (EQ (tem
, QCradio
) || EQ (tem
, QCtoggle
))
8167 /* Insert button prefix. */
8168 Lisp_Object selected
8169 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_SELECTED
];
8170 if (EQ (tem
, QCradio
))
8171 tem
= build_string (NILP (selected
) ? "(*) " : "( ) ");
8173 tem
= build_string (NILP (selected
) ? "[X] " : "[ ] ");
8174 s
= concat2 (tem
, s
);
8178 /* If we have room for the prompt string, add it to this line.
8179 If this is the first on the line, always add it. */
8180 if ((SCHARS (s
) + i
+ 2
8181 + (char_matches
? 0 : SCHARS (desc
) + 3))
8187 /* Punctuate between strings. */
8190 strcpy (menu
+ i
, ", ");
8196 /* If the char to type doesn't match the string's
8197 first char, explicitly show what char to type. */
8200 /* Add as much of string as fits. */
8201 thiswidth
= SCHARS (desc
);
8202 if (thiswidth
+ i
> width
)
8203 thiswidth
= width
- i
;
8204 bcopy (SDATA (desc
), menu
+ i
, thiswidth
);
8206 strcpy (menu
+ i
, " = ");
8210 /* Add as much of string as fits. */
8211 thiswidth
= SCHARS (s
);
8212 if (thiswidth
+ i
> width
)
8213 thiswidth
= width
- i
;
8214 bcopy (SDATA (s
), menu
+ i
, thiswidth
);
8220 /* If this element does not fit, end the line now,
8221 and save the element for the next line. */
8222 strcpy (menu
+ i
, "...");
8227 /* Move past this element. */
8228 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
8229 /* Handle reaching end of dense table. */
8234 rest
= Fcdr_safe (rest
);
8238 /* Prompt with that and read response. */
8239 message2_nolog (menu
, strlen (menu
),
8240 ! NILP (current_buffer
->enable_multibyte_characters
));
8242 /* Make believe its not a keyboard macro in case the help char
8243 is pressed. Help characters are not recorded because menu prompting
8244 is not used on replay.
8246 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
8247 current_kboard
->defining_kbd_macro
= Qnil
;
8249 obj
= read_char (commandflag
, 0, 0, Qt
, 0);
8250 while (BUFFERP (obj
));
8251 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
8253 if (!INTEGERP (obj
))
8258 if (! EQ (obj
, menu_prompt_more_char
)
8259 && (!INTEGERP (menu_prompt_more_char
)
8260 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
8262 if (!NILP (current_kboard
->defining_kbd_macro
))
8263 store_kbd_macro_char (obj
);
8266 /* Help char - go round again */
8270 /* Reading key sequences. */
8272 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
8273 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
8274 keymap, or nil otherwise. Return the index of the first keymap in
8275 which KEY has any binding, or NMAPS if no map has a binding.
8277 If KEY is a meta ASCII character, treat it like meta-prefix-char
8278 followed by the corresponding non-meta character. Keymaps in
8279 CURRENT with non-prefix bindings for meta-prefix-char become nil in
8282 If KEY has no bindings in any of the CURRENT maps, NEXT is left
8285 NEXT may be the same array as CURRENT. */
8288 follow_key (key
, nmaps
, current
, defs
, next
)
8290 Lisp_Object
*current
, *defs
, *next
;
8293 int i
, first_binding
;
8295 first_binding
= nmaps
;
8296 for (i
= nmaps
- 1; i
>= 0; i
--)
8298 if (! NILP (current
[i
]))
8300 defs
[i
] = access_keymap (current
[i
], key
, 1, 0, 1);
8301 if (! NILP (defs
[i
]))
8308 /* Given the set of bindings we've found, produce the next set of maps. */
8309 if (first_binding
< nmaps
)
8310 for (i
= 0; i
< nmaps
; i
++)
8311 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap (defs
[i
], 0, 1);
8313 return first_binding
;
8316 /* Structure used to keep track of partial application of key remapping
8317 such as Vfunction_key_map and Vkey_translation_map. */
8318 typedef struct keyremap
8320 Lisp_Object map
, parent
;
8324 /* Lookup KEY in MAP.
8325 MAP is a keymap mapping keys to key vectors or functions.
8326 If the mapping is a function and DO_FUNCTION is non-zero, then
8327 the function is called with PROMPT as parameter and its return
8328 value is used as the return value of this function (after checking
8329 that it is indeed a vector). */
8332 access_keymap_keyremap (map
, key
, prompt
, do_funcall
)
8333 Lisp_Object map
, key
, prompt
;
8338 next
= access_keymap (map
, key
, 1, 0, 1);
8340 /* Handle symbol with autoload definition. */
8341 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8342 && CONSP (XSYMBOL (next
)->function
)
8343 && EQ (XCAR (XSYMBOL (next
)->function
), Qautoload
))
8344 do_autoload (XSYMBOL (next
)->function
, next
);
8346 /* Handle a symbol whose function definition is a keymap
8348 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8349 && (!NILP (Farrayp (XSYMBOL (next
)->function
))
8350 || KEYMAPP (XSYMBOL (next
)->function
)))
8351 next
= XSYMBOL (next
)->function
;
8353 /* If the keymap gives a function, not an
8354 array, then call the function with one arg and use
8355 its value instead. */
8356 if (SYMBOLP (next
) && !NILP (Ffboundp (next
)) && do_funcall
)
8361 next
= call1 (next
, prompt
);
8362 /* If the function returned something invalid,
8363 barf--don't ignore it.
8364 (To ignore it safely, we would need to gcpro a bunch of
8365 other variables.) */
8366 if (! (VECTORP (next
) || STRINGP (next
)))
8367 error ("Function %s returns invalid key sequence", tem
);
8372 /* Do one step of the key remapping used for function-key-map and
8373 key-translation-map:
8374 KEYBUF is the buffer holding the input events.
8375 BUFSIZE is its maximum size.
8376 FKEY is a pointer to the keyremap structure to use.
8377 INPUT is the index of the last element in KEYBUF.
8378 DOIT if non-zero says that the remapping can actually take place.
8379 DIFF is used to return the number of keys added/removed by the remapping.
8380 PARENT is the root of the keymap.
8381 PROMPT is the prompt to use if the remapping happens through a function.
8382 The return value is non-zero if the remapping actually took place. */
8385 keyremap_step (keybuf
, bufsize
, fkey
, input
, doit
, diff
, prompt
)
8386 Lisp_Object
*keybuf
, prompt
;
8388 int input
, doit
, *diff
, bufsize
;
8390 Lisp_Object next
, key
;
8392 key
= keybuf
[fkey
->end
++];
8393 next
= access_keymap_keyremap (fkey
->map
, key
, prompt
, doit
);
8395 /* If keybuf[fkey->start..fkey->end] is bound in the
8396 map and we're in a position to do the key remapping, replace it with
8397 the binding and restart with fkey->start at the end. */
8398 if ((VECTORP (next
) || STRINGP (next
)) && doit
)
8400 int len
= XFASTINT (Flength (next
));
8403 *diff
= len
- (fkey
->end
- fkey
->start
);
8405 if (input
+ *diff
>= bufsize
)
8406 error ("Key sequence too long");
8408 /* Shift the keys that follow fkey->end. */
8410 for (i
= fkey
->end
; i
< input
; i
++)
8411 keybuf
[i
+ *diff
] = keybuf
[i
];
8413 for (i
= input
- 1; i
>= fkey
->end
; i
--)
8414 keybuf
[i
+ *diff
] = keybuf
[i
];
8415 /* Overwrite the old keys with the new ones. */
8416 for (i
= 0; i
< len
; i
++)
8417 keybuf
[fkey
->start
+ i
]
8418 = Faref (next
, make_number (i
));
8420 fkey
->start
= fkey
->end
+= *diff
;
8421 fkey
->map
= fkey
->parent
;
8426 fkey
->map
= get_keymap (next
, 0, 1);
8428 /* If we no longer have a bound suffix, try a new position for
8430 if (!CONSP (fkey
->map
))
8432 fkey
->end
= ++fkey
->start
;
8433 fkey
->map
= fkey
->parent
;
8438 /* Read a sequence of keys that ends with a non prefix character,
8439 storing it in KEYBUF, a buffer of size BUFSIZE.
8441 Return the length of the key sequence stored.
8442 Return -1 if the user rejected a command menu.
8444 Echo starting immediately unless `prompt' is 0.
8446 Where a key sequence ends depends on the currently active keymaps.
8447 These include any minor mode keymaps active in the current buffer,
8448 the current buffer's local map, and the global map.
8450 If a key sequence has no other bindings, we check Vfunction_key_map
8451 to see if some trailing subsequence might be the beginning of a
8452 function key's sequence. If so, we try to read the whole function
8453 key, and substitute its symbolic name into the key sequence.
8455 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
8456 `double-' events into similar click events, if that would make them
8457 bound. We try to turn `triple-' events first into `double-' events,
8460 If we get a mouse click in a mode line, vertical divider, or other
8461 non-text area, we treat the click as if it were prefixed by the
8462 symbol denoting that area - `mode-line', `vertical-line', or
8465 If the sequence starts with a mouse click, we read the key sequence
8466 with respect to the buffer clicked on, not the current buffer.
8468 If the user switches frames in the midst of a key sequence, we put
8469 off the switch-frame event until later; the next call to
8470 read_char will return it.
8472 If FIX_CURRENT_BUFFER is nonzero, we restore current_buffer
8473 from the selected window's buffer. */
8476 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
8477 can_return_switch_frame
, fix_current_buffer
)
8478 Lisp_Object
*keybuf
;
8481 int dont_downcase_last
;
8482 int can_return_switch_frame
;
8483 int fix_current_buffer
;
8485 volatile Lisp_Object from_string
;
8486 volatile int count
= SPECPDL_INDEX ();
8488 /* How many keys there are in the current key sequence. */
8491 /* The length of the echo buffer when we started reading, and
8492 the length of this_command_keys when we started reading. */
8493 volatile int echo_start
;
8494 volatile int keys_start
;
8496 /* The number of keymaps we're scanning right now, and the number of
8497 keymaps we have allocated space for. */
8499 volatile int nmaps_allocated
= 0;
8501 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
8502 the current keymaps. */
8503 Lisp_Object
*volatile defs
= NULL
;
8505 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
8506 in the current keymaps, or nil where it is not a prefix. */
8507 Lisp_Object
*volatile submaps
= NULL
;
8509 /* The local map to start out with at start of key sequence. */
8510 volatile Lisp_Object orig_local_map
;
8512 /* The map from the `keymap' property to start out with at start of
8514 volatile Lisp_Object orig_keymap
;
8516 /* 1 if we have already considered switching to the local-map property
8517 of the place where a mouse click occurred. */
8518 volatile int localized_local_map
= 0;
8520 /* The index in defs[] of the first keymap that has a binding for
8521 this key sequence. In other words, the lowest i such that
8522 defs[i] is non-nil. */
8523 volatile int first_binding
;
8524 /* Index of the first key that has no binding.
8525 It is useless to try fkey.start larger than that. */
8526 volatile int first_unbound
;
8528 /* If t < mock_input, then KEYBUF[t] should be read as the next
8531 We use this to recover after recognizing a function key. Once we
8532 realize that a suffix of the current key sequence is actually a
8533 function key's escape sequence, we replace the suffix with the
8534 function key's binding from Vfunction_key_map. Now keybuf
8535 contains a new and different key sequence, so the echo area,
8536 this_command_keys, and the submaps and defs arrays are wrong. In
8537 this situation, we set mock_input to t, set t to 0, and jump to
8538 restart_sequence; the loop will read keys from keybuf up until
8539 mock_input, thus rebuilding the state; and then it will resume
8540 reading characters from the keyboard. */
8541 volatile int mock_input
= 0;
8543 /* If the sequence is unbound in submaps[], then
8544 keybuf[fkey.start..fkey.end-1] is a prefix in Vfunction_key_map,
8545 and fkey.map is its binding.
8547 These might be > t, indicating that all function key scanning
8548 should hold off until t reaches them. We do this when we've just
8549 recognized a function key, to avoid searching for the function
8550 key's again in Vfunction_key_map. */
8551 volatile keyremap fkey
;
8553 /* Likewise, for key_translation_map. */
8554 volatile keyremap keytran
;
8556 /* If we receive a `switch-frame' or `select-window' event in the middle of
8557 a key sequence, we put it off for later.
8558 While we're reading, we keep the event here. */
8559 volatile Lisp_Object delayed_switch_frame
;
8561 /* See the comment below... */
8562 #if defined (GOBBLE_FIRST_EVENT)
8563 Lisp_Object first_event
;
8566 volatile Lisp_Object original_uppercase
;
8567 volatile int original_uppercase_position
= -1;
8569 /* Gets around Microsoft compiler limitations. */
8572 struct buffer
*starting_buffer
;
8574 /* List of events for which a fake prefix key has been generated. */
8575 volatile Lisp_Object fake_prefixed_keys
= Qnil
;
8577 #if defined (GOBBLE_FIRST_EVENT)
8581 struct gcpro gcpro1
;
8583 GCPRO1 (fake_prefixed_keys
);
8584 raw_keybuf_count
= 0;
8586 last_nonmenu_event
= Qnil
;
8588 delayed_switch_frame
= Qnil
;
8589 fkey
.map
= fkey
.parent
= Vfunction_key_map
;
8590 keytran
.map
= keytran
.parent
= Vkey_translation_map
;
8591 /* If there is no translation-map, turn off scanning. */
8592 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
8593 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
8598 echo_prompt (prompt
);
8599 else if (cursor_in_echo_area
8600 && (FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8601 && NILP (Fzerop (Vecho_keystrokes
)))
8602 /* This doesn't put in a dash if the echo buffer is empty, so
8603 you don't always see a dash hanging out in the minibuffer. */
8607 /* Record the initial state of the echo area and this_command_keys;
8608 we will need to restore them if we replay a key sequence. */
8610 echo_start
= echo_length ();
8611 keys_start
= this_command_key_count
;
8612 this_single_command_key_start
= keys_start
;
8614 #if defined (GOBBLE_FIRST_EVENT)
8615 /* This doesn't quite work, because some of the things that read_char
8616 does cannot safely be bypassed. It seems too risky to try to make
8619 /* Read the first char of the sequence specially, before setting
8620 up any keymaps, in case a filter runs and switches buffers on us. */
8621 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
8623 #endif /* GOBBLE_FIRST_EVENT */
8625 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8626 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8629 /* We jump here when the key sequence has been thoroughly changed, and
8630 we need to rescan it starting from the beginning. When we jump here,
8631 keybuf[0..mock_input] holds the sequence we should reread. */
8634 starting_buffer
= current_buffer
;
8635 first_unbound
= bufsize
+ 1;
8637 /* Build our list of keymaps.
8638 If we recognize a function key and replace its escape sequence in
8639 keybuf with its symbol, or if the sequence starts with a mouse
8640 click and we need to switch buffers, we jump back here to rebuild
8641 the initial keymaps from the current buffer. */
8644 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
8645 || !NILP (Voverriding_local_map
))
8647 if (3 > nmaps_allocated
)
8649 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
8650 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
8651 nmaps_allocated
= 3;
8653 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
8654 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
8655 if (!NILP (Voverriding_local_map
))
8656 submaps
[nmaps
++] = Voverriding_local_map
;
8664 nminor
= current_minor_maps (0, &maps
);
8665 total
= nminor
+ (!NILP (orig_keymap
) ? 3 : 2);
8667 if (total
> nmaps_allocated
)
8669 submaps
= (Lisp_Object
*) alloca (total
* sizeof (submaps
[0]));
8670 defs
= (Lisp_Object
*) alloca (total
* sizeof (defs
[0]));
8671 nmaps_allocated
= total
;
8674 if (!NILP (orig_keymap
))
8675 submaps
[nmaps
++] = orig_keymap
;
8677 bcopy (maps
, (void *) (submaps
+ nmaps
),
8678 nminor
* sizeof (submaps
[0]));
8682 submaps
[nmaps
++] = orig_local_map
;
8684 submaps
[nmaps
++] = current_global_map
;
8686 /* Find an accurate initial value for first_binding. */
8687 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
8688 if (! NILP (submaps
[first_binding
]))
8691 /* Start from the beginning in keybuf. */
8694 /* These are no-ops the first time through, but if we restart, they
8695 revert the echo area and this_command_keys to their original state. */
8696 this_command_key_count
= keys_start
;
8697 if (INTERACTIVE
&& t
< mock_input
)
8698 echo_truncate (echo_start
);
8700 /* If the best binding for the current key sequence is a keymap, or
8701 we may be looking at a function key's escape sequence, keep on
8703 while (first_binding
< nmaps
8704 /* Keep reading as long as there's a prefix binding. */
8705 ? !NILP (submaps
[first_binding
])
8706 /* Don't return in the middle of a possible function key sequence,
8707 if the only bindings we found were via case conversion.
8708 Thus, if ESC O a has a function-key-map translation
8709 and ESC o has a binding, don't return after ESC O,
8710 so that we can translate ESC O plus the next character. */
8711 : (fkey
.start
< t
|| keytran
.start
< t
))
8714 int used_mouse_menu
= 0;
8716 /* Where the last real key started. If we need to throw away a
8717 key that has expanded into more than one element of keybuf
8718 (say, a mouse click on the mode line which is being treated
8719 as [mode-line (mouse-...)], then we backtrack to this point
8721 volatile int last_real_key_start
;
8723 /* These variables are analogous to echo_start and keys_start;
8724 while those allow us to restart the entire key sequence,
8725 echo_local_start and keys_local_start allow us to throw away
8727 volatile int echo_local_start
, keys_local_start
, local_first_binding
;
8729 eassert (fkey
.end
== t
|| (fkey
.end
> t
&& fkey
.end
<= mock_input
));
8730 eassert (fkey
.start
<= fkey
.end
);
8731 eassert (keytran
.start
<= keytran
.end
);
8732 /* key-translation-map is applied *after* function-key-map. */
8733 eassert (keytran
.end
<= fkey
.start
);
8735 if (first_unbound
< fkey
.start
&& first_unbound
< keytran
.start
)
8736 { /* The prefix upto first_unbound has no binding and has
8737 no translation left to do either, so we know it's unbound.
8738 If we don't stop now, we risk staying here indefinitely
8739 (if the user keeps entering fkey or keytran prefixes
8740 like C-c ESC ESC ESC ESC ...) */
8742 for (i
= first_unbound
+ 1; i
< t
; i
++)
8743 keybuf
[i
- first_unbound
- 1] = keybuf
[i
];
8744 mock_input
= t
- first_unbound
- 1;
8745 fkey
.end
= fkey
.start
-= first_unbound
+ 1;
8746 fkey
.map
= fkey
.parent
;
8747 keytran
.end
= keytran
.start
-= first_unbound
+ 1;
8748 keytran
.map
= keytran
.parent
;
8749 goto replay_sequence
;
8753 error ("Key sequence too long");
8756 echo_local_start
= echo_length ();
8757 keys_local_start
= this_command_key_count
;
8758 local_first_binding
= first_binding
;
8761 /* These are no-ops, unless we throw away a keystroke below and
8762 jumped back up to replay_key; in that case, these restore the
8763 variables to their original state, allowing us to replay the
8765 if (INTERACTIVE
&& t
< mock_input
)
8766 echo_truncate (echo_local_start
);
8767 this_command_key_count
= keys_local_start
;
8768 first_binding
= local_first_binding
;
8770 /* By default, assume each event is "real". */
8771 last_real_key_start
= t
;
8773 /* Does mock_input indicate that we are re-reading a key sequence? */
8777 add_command_key (key
);
8778 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8779 && NILP (Fzerop (Vecho_keystrokes
)))
8783 /* If not, we should actually read a character. */
8788 KBOARD
*interrupted_kboard
= current_kboard
;
8789 struct frame
*interrupted_frame
= SELECTED_FRAME ();
8790 if (setjmp (wrong_kboard_jmpbuf
))
8792 if (!NILP (delayed_switch_frame
))
8794 interrupted_kboard
->kbd_queue
8795 = Fcons (delayed_switch_frame
,
8796 interrupted_kboard
->kbd_queue
);
8797 delayed_switch_frame
= Qnil
;
8800 interrupted_kboard
->kbd_queue
8801 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
8803 /* If the side queue is non-empty, ensure it begins with a
8804 switch-frame, so we'll replay it in the right context. */
8805 if (CONSP (interrupted_kboard
->kbd_queue
)
8806 && (key
= XCAR (interrupted_kboard
->kbd_queue
),
8807 !(EVENT_HAS_PARAMETERS (key
)
8808 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
8812 XSETFRAME (frame
, interrupted_frame
);
8813 interrupted_kboard
->kbd_queue
8814 = Fcons (make_lispy_switch_frame (frame
),
8815 interrupted_kboard
->kbd_queue
);
8818 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8819 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8820 goto replay_sequence
;
8823 key
= read_char (NILP (prompt
), nmaps
,
8824 (Lisp_Object
*) submaps
, last_nonmenu_event
,
8828 /* read_char returns t when it shows a menu and the user rejects it.
8832 unbind_to (count
, Qnil
);
8837 /* read_char returns -1 at the end of a macro.
8838 Emacs 18 handles this by returning immediately with a
8839 zero, so that's what we'll do. */
8840 if (INTEGERP (key
) && XINT (key
) == -1)
8843 /* The Microsoft C compiler can't handle the goto that
8849 /* If the current buffer has been changed from under us, the
8850 keymap may have changed, so replay the sequence. */
8853 timer_resume_idle ();
8856 /* Reset the current buffer from the selected window
8857 in case something changed the former and not the latter.
8858 This is to be more consistent with the behavior
8859 of the command_loop_1. */
8860 if (fix_current_buffer
)
8862 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
8864 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
8865 Fset_buffer (XWINDOW (selected_window
)->buffer
);
8868 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8869 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8870 goto replay_sequence
;
8873 /* If we have a quit that was typed in another frame, and
8874 quit_throw_to_read_char switched buffers,
8875 replay to get the right keymap. */
8877 && XINT (key
) == quit_char
8878 && current_buffer
!= starting_buffer
)
8881 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8885 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8886 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8887 goto replay_sequence
;
8892 if (EVENT_HAS_PARAMETERS (key
)
8893 /* Either a `switch-frame' or a `select-window' event. */
8894 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)), Qswitch_frame
))
8896 /* If we're at the beginning of a key sequence, and the caller
8897 says it's okay, go ahead and return this event. If we're
8898 in the midst of a key sequence, delay it until the end. */
8899 if (t
> 0 || !can_return_switch_frame
)
8901 delayed_switch_frame
= key
;
8907 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8910 /* Clicks in non-text areas get prefixed by the symbol
8911 in their CHAR-ADDRESS field. For example, a click on
8912 the mode line is prefixed by the symbol `mode-line'.
8914 Furthermore, key sequences beginning with mouse clicks
8915 are read using the keymaps of the buffer clicked on, not
8916 the current buffer. So we may have to switch the buffer
8919 When we turn one event into two events, we must make sure
8920 that neither of the two looks like the original--so that,
8921 if we replay the events, they won't be expanded again.
8922 If not for this, such reexpansion could happen either here
8923 or when user programs play with this-command-keys. */
8924 if (EVENT_HAS_PARAMETERS (key
))
8929 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
8930 if (EQ (kind
, Qmouse_click
))
8932 Lisp_Object window
, posn
;
8934 window
= POSN_WINDOW (EVENT_START (key
));
8935 posn
= POSN_POSN (EVENT_START (key
));
8938 || (!NILP (fake_prefixed_keys
)
8939 && !NILP (Fmemq (key
, fake_prefixed_keys
))))
8941 /* We're looking a second time at an event for which
8942 we generated a fake prefix key. Set
8943 last_real_key_start appropriately. */
8945 last_real_key_start
= t
- 1;
8948 /* Key sequences beginning with mouse clicks are
8949 read using the keymaps in the buffer clicked on,
8950 not the current buffer. If we're at the
8951 beginning of a key sequence, switch buffers. */
8952 if (last_real_key_start
== 0
8954 && BUFFERP (XWINDOW (window
)->buffer
)
8955 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
8957 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8961 /* Arrange to go back to the original buffer once we're
8962 done reading the key sequence. Note that we can't
8963 use save_excursion_{save,restore} here, because they
8964 save point as well as the current buffer; we don't
8965 want to save point, because redisplay may change it,
8966 to accommodate a Fset_window_start or something. We
8967 don't want to do this at the top of the function,
8968 because we may get input from a subprocess which
8969 wants to change the selected window and stuff (say,
8971 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
8973 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
8975 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
8976 orig_local_map
= get_local_map (PT
, current_buffer
,
8978 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8979 goto replay_sequence
;
8982 /* For a mouse click, get the local text-property keymap
8983 of the place clicked on, rather than point. */
8984 if (last_real_key_start
== 0
8985 && CONSP (XCDR (key
))
8986 && ! localized_local_map
)
8988 Lisp_Object map_here
, start
, pos
;
8990 localized_local_map
= 1;
8991 start
= EVENT_START (key
);
8993 if (CONSP (start
) && POSN_INBUFFER_P (start
))
8995 pos
= POSN_BUFFER_POSN (start
);
8997 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
8999 map_here
= get_local_map (XINT (pos
),
9000 current_buffer
, Qlocal_map
);
9001 if (!EQ (map_here
, orig_local_map
))
9003 orig_local_map
= map_here
;
9007 goto replay_sequence
;
9009 map_here
= get_local_map (XINT (pos
),
9010 current_buffer
, Qkeymap
);
9011 if (!EQ (map_here
, orig_keymap
))
9013 orig_keymap
= map_here
;
9017 goto replay_sequence
;
9023 /* Expand mode-line and scroll-bar events into two events:
9024 use posn as a fake prefix key. */
9026 && (NILP (fake_prefixed_keys
)
9027 || NILP (Fmemq (key
, fake_prefixed_keys
))))
9029 if (t
+ 1 >= bufsize
)
9030 error ("Key sequence too long");
9033 keybuf
[t
+ 1] = key
;
9036 /* Record that a fake prefix key has been generated
9037 for KEY. Don't modify the event; this would
9038 prevent proper action when the event is pushed
9039 back into unread-command-events. */
9040 fake_prefixed_keys
= Fcons (key
, fake_prefixed_keys
);
9042 /* If on a mode line string with a local keymap,
9043 reconsider the key sequence with that keymap. */
9044 if (string
= POSN_STRING (EVENT_START (key
)),
9045 (CONSP (string
) && STRINGP (XCAR (string
))))
9047 Lisp_Object pos
, map
, map2
;
9049 pos
= XCDR (string
);
9050 string
= XCAR (string
);
9052 && XINT (pos
) < SCHARS (string
))
9054 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9056 orig_local_map
= map
;
9057 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9060 if (!NILP (map
) || !NILP (map2
))
9061 goto replay_sequence
;
9067 else if (NILP (from_string
)
9068 && (string
= POSN_STRING (EVENT_START (key
)),
9069 (CONSP (string
) && STRINGP (XCAR (string
)))))
9071 /* For a click on a string, i.e. overlay string or a
9072 string displayed via the `display' property,
9073 consider `local-map' and `keymap' properties of
9075 Lisp_Object pos
, map
, map2
;
9077 pos
= XCDR (string
);
9078 string
= XCAR (string
);
9080 && XINT (pos
) < SCHARS (string
))
9082 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9084 orig_local_map
= map
;
9085 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9089 if (!NILP (map
) || !NILP (map2
))
9091 from_string
= string
;
9092 goto replay_sequence
;
9097 else if (CONSP (XCDR (key
))
9098 && CONSP (EVENT_START (key
))
9099 && CONSP (XCDR (EVENT_START (key
))))
9103 posn
= POSN_POSN (EVENT_START (key
));
9104 /* Handle menu-bar events:
9105 insert the dummy prefix event `menu-bar'. */
9106 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
9108 if (t
+ 1 >= bufsize
)
9109 error ("Key sequence too long");
9113 /* Zap the position in key, so we know that we've
9114 expanded it, and don't try to do so again. */
9115 POSN_SET_POSN (EVENT_START (key
),
9116 Fcons (posn
, Qnil
));
9119 goto replay_sequence
;
9121 else if (CONSP (posn
))
9123 /* We're looking at the second event of a
9124 sequence which we expanded before. Set
9125 last_real_key_start appropriately. */
9126 if (last_real_key_start
== t
&& t
> 0)
9127 last_real_key_start
= t
- 1;
9132 /* We have finally decided that KEY is something we might want
9134 first_binding
= (follow_key (key
,
9135 nmaps
- first_binding
,
9136 submaps
+ first_binding
,
9137 defs
+ first_binding
,
9138 submaps
+ first_binding
)
9141 /* If KEY wasn't bound, we'll try some fallbacks. */
9142 if (first_binding
< nmaps
)
9143 /* This is needed for the following scenario:
9144 event 0: a down-event that gets dropped by calling replay_key.
9145 event 1: some normal prefix like C-h.
9146 After event 0, first_unbound is 0, after event 1 fkey.start
9147 and keytran.start are both 1, so when we see that C-h is bound,
9148 we need to update first_unbound. */
9149 first_unbound
= max (t
+ 1, first_unbound
);
9154 /* Remember the position to put an upper bound on fkey.start. */
9155 first_unbound
= min (t
, first_unbound
);
9157 head
= EVENT_HEAD (key
);
9158 if (help_char_p (head
) && t
> 0)
9160 read_key_sequence_cmd
= Vprefix_help_command
;
9162 last_nonmenu_event
= key
;
9163 /* The Microsoft C compiler can't handle the goto that
9171 Lisp_Object breakdown
;
9174 breakdown
= parse_modifiers (head
);
9175 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9176 /* Attempt to reduce an unbound mouse event to a simpler
9177 event that is bound:
9178 Drags reduce to clicks.
9179 Double-clicks reduce to clicks.
9180 Triple-clicks reduce to double-clicks, then to clicks.
9181 Down-clicks are eliminated.
9182 Double-downs reduce to downs, then are eliminated.
9183 Triple-downs reduce to double-downs, then to downs,
9184 then are eliminated. */
9185 if (modifiers
& (down_modifier
| drag_modifier
9186 | double_modifier
| triple_modifier
))
9188 while (modifiers
& (down_modifier
| drag_modifier
9189 | double_modifier
| triple_modifier
))
9191 Lisp_Object new_head
, new_click
;
9192 if (modifiers
& triple_modifier
)
9193 modifiers
^= (double_modifier
| triple_modifier
);
9194 else if (modifiers
& double_modifier
)
9195 modifiers
&= ~double_modifier
;
9196 else if (modifiers
& drag_modifier
)
9197 modifiers
&= ~drag_modifier
;
9200 /* Dispose of this `down' event by simply jumping
9201 back to replay_key, to get another event.
9203 Note that if this event came from mock input,
9204 then just jumping back to replay_key will just
9205 hand it to us again. So we have to wipe out any
9208 We could delete keybuf[t] and shift everything
9209 after that to the left by one spot, but we'd also
9210 have to fix up any variable that points into
9211 keybuf, and shifting isn't really necessary
9214 Adding prefixes for non-textual mouse clicks
9215 creates two characters of mock input, and both
9216 must be thrown away. If we're only looking at
9217 the prefix now, we can just jump back to
9218 replay_key. On the other hand, if we've already
9219 processed the prefix, and now the actual click
9220 itself is giving us trouble, then we've lost the
9221 state of the keymaps we want to backtrack to, and
9222 we need to replay the whole sequence to rebuild
9225 Beyond that, only function key expansion could
9226 create more than two keys, but that should never
9227 generate mouse events, so it's okay to zero
9228 mock_input in that case too.
9230 FIXME: The above paragraph seems just plain
9231 wrong, if you consider things like
9232 xterm-mouse-mode. -stef
9234 Isn't this just the most wonderful code ever? */
9236 /* If mock_input > t + 1, the above simplification
9237 will actually end up dropping keys on the floor.
9238 This is probably OK for now, but even
9239 if mock_input <= t + 1, we need to adjust fkey
9241 Typical case [header-line down-mouse-N]:
9242 mock_input = 2, t = 1, fkey.end = 1,
9243 last_real_key_start = 0. */
9244 if (fkey
.end
> last_real_key_start
)
9246 fkey
.end
= fkey
.start
9247 = min (last_real_key_start
, fkey
.start
);
9248 fkey
.map
= fkey
.parent
;
9249 if (keytran
.end
> last_real_key_start
)
9251 keytran
.end
= keytran
.start
9252 = min (last_real_key_start
, keytran
.start
);
9253 keytran
.map
= keytran
.parent
;
9256 if (t
== last_real_key_start
)
9263 mock_input
= last_real_key_start
;
9264 goto replay_sequence
;
9269 = apply_modifiers (modifiers
, XCAR (breakdown
));
9271 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
9273 /* Look for a binding for this new key. follow_key
9274 promises that it didn't munge submaps the
9275 last time we called it, since key was unbound. */
9277 = (follow_key (new_click
,
9278 nmaps
- local_first_binding
,
9279 submaps
+ local_first_binding
,
9280 defs
+ local_first_binding
,
9281 submaps
+ local_first_binding
)
9282 + local_first_binding
);
9284 /* If that click is bound, go for it. */
9285 if (first_binding
< nmaps
)
9290 /* Otherwise, we'll leave key set to the drag event. */
9297 /* Normally, last_nonmenu_event gets the previous key we read.
9298 But when a mouse popup menu is being used,
9299 we don't update last_nonmenu_event; it continues to hold the mouse
9300 event that preceded the first level of menu. */
9301 if (!used_mouse_menu
)
9302 last_nonmenu_event
= key
;
9304 /* Record what part of this_command_keys is the current key sequence. */
9305 this_single_command_key_start
= this_command_key_count
- t
;
9307 if (first_binding
< nmaps
&& NILP (submaps
[first_binding
]))
9308 /* There is a binding and it's not a prefix.
9309 There is thus no function-key in this sequence.
9310 Moving fkey.start is important in this case to allow keytran.start
9311 to go over the sequence before we return (since we keep the
9312 invariant that keytran.end <= fkey.start). */
9315 (fkey
.start
= fkey
.end
= t
, fkey
.map
= fkey
.parent
);
9318 /* If the sequence is unbound, see if we can hang a function key
9319 off the end of it. */
9320 /* Continue scan from fkey.end until we find a bound suffix. */
9321 while (fkey
.end
< t
)
9323 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9326 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9327 done
= keyremap_step (keybuf
, bufsize
, &fkey
,
9328 max (t
, mock_input
),
9329 /* If there's a binding (i.e.
9330 first_binding >= nmaps) we don't want
9331 to apply this function-key-mapping. */
9332 fkey
.end
+ 1 == t
&& first_binding
>= nmaps
,
9337 mock_input
= diff
+ max (t
, mock_input
);
9338 goto replay_sequence
;
9342 /* Look for this sequence in key-translation-map.
9343 Scan from keytran.end until we find a bound suffix. */
9344 while (keytran
.end
< fkey
.start
)
9346 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9349 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9350 done
= keyremap_step (keybuf
, bufsize
, &keytran
, max (t
, mock_input
),
9355 mock_input
= diff
+ max (t
, mock_input
);
9356 /* Adjust the function-key-map counters. */
9360 goto replay_sequence
;
9364 /* If KEY is not defined in any of the keymaps,
9365 and cannot be part of a function key or translation,
9366 and is an upper case letter
9367 use the corresponding lower-case letter instead. */
9368 if (first_binding
>= nmaps
9369 && fkey
.start
>= t
&& keytran
.start
>= t
9371 && ((((XINT (key
) & 0x3ffff)
9372 < XCHAR_TABLE (current_buffer
->downcase_table
)->size
)
9373 && UPPERCASEP (XINT (key
) & 0x3ffff))
9374 || (XINT (key
) & shift_modifier
)))
9376 Lisp_Object new_key
;
9378 original_uppercase
= key
;
9379 original_uppercase_position
= t
- 1;
9381 if (XINT (key
) & shift_modifier
)
9382 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
9384 XSETINT (new_key
, (DOWNCASE (XINT (key
) & 0x3ffff)
9385 | (XINT (key
) & ~0x3ffff)));
9387 /* We have to do this unconditionally, regardless of whether
9388 the lower-case char is defined in the keymaps, because they
9389 might get translated through function-key-map. */
9390 keybuf
[t
- 1] = new_key
;
9391 mock_input
= max (t
, mock_input
);
9393 goto replay_sequence
;
9395 /* If KEY is not defined in any of the keymaps,
9396 and cannot be part of a function key or translation,
9397 and is a shifted function key,
9398 use the corresponding unshifted function key instead. */
9399 if (first_binding
>= nmaps
9400 && fkey
.start
>= t
&& keytran
.start
>= t
9403 Lisp_Object breakdown
;
9406 breakdown
= parse_modifiers (key
);
9407 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9408 if (modifiers
& shift_modifier
)
9410 Lisp_Object new_key
;
9412 original_uppercase
= key
;
9413 original_uppercase_position
= t
- 1;
9415 modifiers
&= ~shift_modifier
;
9416 new_key
= apply_modifiers (modifiers
,
9419 keybuf
[t
- 1] = new_key
;
9420 mock_input
= max (t
, mock_input
);
9421 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
9422 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
9424 goto replay_sequence
;
9430 read_key_sequence_cmd
= (first_binding
< nmaps
9431 ? defs
[first_binding
]
9434 unread_switch_frame
= delayed_switch_frame
;
9435 unbind_to (count
, Qnil
);
9437 /* Don't downcase the last character if the caller says don't.
9438 Don't downcase it if the result is undefined, either. */
9439 if ((dont_downcase_last
|| first_binding
>= nmaps
)
9440 && t
- 1 == original_uppercase_position
)
9441 keybuf
[t
- 1] = original_uppercase
;
9443 /* Occasionally we fabricate events, perhaps by expanding something
9444 according to function-key-map, or by adding a prefix symbol to a
9445 mouse click in the scroll bar or modeline. In this cases, return
9446 the entire generated key sequence, even if we hit an unbound
9447 prefix or a definition before the end. This means that you will
9448 be able to push back the event properly, and also means that
9449 read-key-sequence will always return a logical unit.
9452 for (; t
< mock_input
; t
++)
9454 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
9455 && NILP (Fzerop (Vecho_keystrokes
)))
9456 echo_char (keybuf
[t
]);
9457 add_command_key (keybuf
[t
]);
9466 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 5, 0,
9467 doc
: /* Read a sequence of keystrokes and return as a string or vector.
9468 The sequence is sufficient to specify a non-prefix command in the
9469 current local and global maps.
9471 First arg PROMPT is a prompt string. If nil, do not prompt specially.
9472 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos
9473 as a continuation of the previous key.
9475 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not
9476 convert the last event to lower case. (Normally any upper case event
9477 is converted to lower case if the original event is undefined and the lower
9478 case equivalent is defined.) A non-nil value is appropriate for reading
9479 a key sequence to be defined.
9481 A C-g typed while in this function is treated like any other character,
9482 and `quit-flag' is not set.
9484 If the key sequence starts with a mouse click, then the sequence is read
9485 using the keymaps of the buffer of the window clicked in, not the buffer
9486 of the selected window as normal.
9488 `read-key-sequence' drops unbound button-down events, since you normally
9489 only care about the click or drag events which follow them. If a drag
9490 or multi-click event is unbound, but the corresponding click event would
9491 be bound, `read-key-sequence' turns the event into a click event at the
9492 drag's starting position. This means that you don't have to distinguish
9493 between click and drag, double, or triple events unless you want to.
9495 `read-key-sequence' prefixes mouse events on mode lines, the vertical
9496 lines separating windows, and scroll bars with imaginary keys
9497 `mode-line', `vertical-line', and `vertical-scroll-bar'.
9499 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this
9500 function will process a switch-frame event if the user switches frames
9501 before typing anything. If the user switches frames in the middle of a
9502 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME
9503 is nil, then the event will be put off until after the current key sequence.
9505 `read-key-sequence' checks `function-key-map' for function key
9506 sequences, where they wouldn't conflict with ordinary bindings. See
9507 `function-key-map' for more details.
9509 The optional fifth argument COMMAND-LOOP, if non-nil, means
9510 that this key sequence is being read by something that will
9511 read commands one after another. It should be nil if the caller
9512 will read just one key sequence. */)
9513 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9515 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9516 Lisp_Object can_return_switch_frame
, command_loop
;
9518 Lisp_Object keybuf
[30];
9520 struct gcpro gcpro1
;
9521 int count
= SPECPDL_INDEX ();
9524 CHECK_STRING (prompt
);
9527 specbind (Qinput_method_exit_on_first_char
,
9528 (NILP (command_loop
) ? Qt
: Qnil
));
9529 specbind (Qinput_method_use_echo_area
,
9530 (NILP (command_loop
) ? Qt
: Qnil
));
9532 bzero (keybuf
, sizeof keybuf
);
9534 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9536 if (NILP (continue_echo
))
9538 this_command_key_count
= 0;
9539 this_command_key_count_reset
= 0;
9540 this_single_command_key_start
= 0;
9543 #ifdef HAVE_X_WINDOWS
9544 if (display_hourglass_p
)
9545 cancel_hourglass ();
9548 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9549 prompt
, ! NILP (dont_downcase_last
),
9550 ! NILP (can_return_switch_frame
), 0);
9552 #if 0 /* The following is fine for code reading a key sequence and
9553 then proceeding with a lenghty computation, but it's not good
9554 for code reading keys in a loop, like an input method. */
9555 #ifdef HAVE_X_WINDOWS
9556 if (display_hourglass_p
)
9567 return unbind_to (count
, make_event_array (i
, keybuf
));
9570 DEFUN ("read-key-sequence-vector", Fread_key_sequence_vector
,
9571 Sread_key_sequence_vector
, 1, 5, 0,
9572 doc
: /* Like `read-key-sequence' but always return a vector. */)
9573 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9575 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9576 Lisp_Object can_return_switch_frame
, command_loop
;
9578 Lisp_Object keybuf
[30];
9580 struct gcpro gcpro1
;
9581 int count
= SPECPDL_INDEX ();
9584 CHECK_STRING (prompt
);
9587 specbind (Qinput_method_exit_on_first_char
,
9588 (NILP (command_loop
) ? Qt
: Qnil
));
9589 specbind (Qinput_method_use_echo_area
,
9590 (NILP (command_loop
) ? Qt
: Qnil
));
9592 bzero (keybuf
, sizeof keybuf
);
9594 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9596 if (NILP (continue_echo
))
9598 this_command_key_count
= 0;
9599 this_command_key_count_reset
= 0;
9600 this_single_command_key_start
= 0;
9603 #ifdef HAVE_X_WINDOWS
9604 if (display_hourglass_p
)
9605 cancel_hourglass ();
9608 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9609 prompt
, ! NILP (dont_downcase_last
),
9610 ! NILP (can_return_switch_frame
), 0);
9612 #ifdef HAVE_X_WINDOWS
9613 if (display_hourglass_p
)
9623 return unbind_to (count
, Fvector (i
, keybuf
));
9626 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
9627 doc
: /* Execute CMD as an editor command.
9628 CMD must be a symbol that satisfies the `commandp' predicate.
9629 Optional second arg RECORD-FLAG non-nil
9630 means unconditionally put this command in `command-history'.
9631 Otherwise, that is done only if an arg is read using the minibuffer.
9632 The argument KEYS specifies the value to use instead of (this-command-keys)
9633 when reading the arguments; if it is nil, (this-command-keys) is used.
9634 The argument SPECIAL, if non-nil, means that this command is executing
9635 a special event, so ignore the prefix argument and don't clear it. */)
9636 (cmd
, record_flag
, keys
, special
)
9637 Lisp_Object cmd
, record_flag
, keys
, special
;
9639 register Lisp_Object final
;
9640 register Lisp_Object tem
;
9641 Lisp_Object prefixarg
;
9642 struct backtrace backtrace
;
9643 extern int debug_on_next_call
;
9645 debug_on_next_call
= 0;
9649 prefixarg
= current_kboard
->Vprefix_arg
;
9650 Vcurrent_prefix_arg
= prefixarg
;
9651 current_kboard
->Vprefix_arg
= Qnil
;
9658 tem
= Fget (cmd
, Qdisabled
);
9659 if (!NILP (tem
) && !NILP (Vrun_hooks
))
9661 tem
= Fsymbol_value (Qdisabled_command_function
);
9663 return call1 (Vrun_hooks
, Qdisabled_command_function
);
9669 final
= Findirect_function (cmd
);
9671 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
9673 struct gcpro gcpro1
, gcpro2
;
9675 GCPRO2 (cmd
, prefixarg
);
9676 do_autoload (final
, cmd
);
9683 if (STRINGP (final
) || VECTORP (final
))
9685 /* If requested, place the macro in the command history. For
9686 other sorts of commands, call-interactively takes care of
9688 if (!NILP (record_flag
))
9691 = Fcons (Fcons (Qexecute_kbd_macro
,
9692 Fcons (final
, Fcons (prefixarg
, Qnil
))),
9695 /* Don't keep command history around forever. */
9696 if (NUMBERP (Vhistory_length
) && XINT (Vhistory_length
) > 0)
9698 tem
= Fnthcdr (Vhistory_length
, Vcommand_history
);
9700 XSETCDR (tem
, Qnil
);
9704 return Fexecute_kbd_macro (final
, prefixarg
, Qnil
);
9707 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
9709 backtrace
.next
= backtrace_list
;
9710 backtrace_list
= &backtrace
;
9711 backtrace
.function
= &Qcall_interactively
;
9712 backtrace
.args
= &cmd
;
9713 backtrace
.nargs
= 1;
9714 backtrace
.evalargs
= 0;
9715 backtrace
.debug_on_exit
= 0;
9717 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
9719 backtrace_list
= backtrace
.next
;
9727 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
9729 doc
: /* Read function name, then read its arguments and call it. */)
9731 Lisp_Object prefixarg
;
9733 Lisp_Object function
;
9735 int saved_last_point_position
;
9736 Lisp_Object saved_keys
, saved_last_point_position_buffer
;
9737 Lisp_Object bindings
, value
;
9738 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9739 #ifdef HAVE_X_WINDOWS
9740 /* The call to Fcompleting_read wil start and cancel the hourglass,
9741 but if the hourglass was already scheduled, this means that no
9742 hourglass will be shown for the actual M-x command itself.
9743 So we restart it if it is already scheduled. Note that checking
9744 hourglass_shown_p is not enough, normally the hourglass is not shown,
9745 just scheduled to be shown. */
9746 int hstarted
= hourglass_started ();
9749 saved_keys
= Fvector (this_command_key_count
,
9750 XVECTOR (this_command_keys
)->contents
);
9751 saved_last_point_position_buffer
= last_point_position_buffer
;
9752 saved_last_point_position
= last_point_position
;
9754 GCPRO3 (saved_keys
, prefixarg
, saved_last_point_position_buffer
);
9756 if (EQ (prefixarg
, Qminus
))
9758 else if (CONSP (prefixarg
) && XINT (XCAR (prefixarg
)) == 4)
9759 strcpy (buf
, "C-u ");
9760 else if (CONSP (prefixarg
) && INTEGERP (XCAR (prefixarg
)))
9761 sprintf (buf
, "%ld ", (long) XINT (XCAR (prefixarg
)));
9762 else if (INTEGERP (prefixarg
))
9763 sprintf (buf
, "%ld ", (long) XINT (prefixarg
));
9765 /* This isn't strictly correct if execute-extended-command
9766 is bound to anything else. Perhaps it should use
9767 this_command_keys? */
9768 strcat (buf
, "M-x ");
9770 /* Prompt with buf, and then read a string, completing from and
9771 restricting to the set of all defined commands. Don't provide
9772 any initial input. Save the command read on the extended-command
9774 function
= Fcompleting_read (build_string (buf
),
9775 Vobarray
, Qcommandp
,
9776 Qt
, Qnil
, Qextended_command_history
, Qnil
,
9779 #ifdef HAVE_X_WINDOWS
9780 if (hstarted
) start_hourglass ();
9783 if (STRINGP (function
) && SCHARS (function
) == 0)
9784 error ("No command name given");
9786 /* Set this_command_keys to the concatenation of saved_keys and
9787 function, followed by a RET. */
9792 this_command_key_count
= 0;
9793 this_command_key_count_reset
= 0;
9794 this_single_command_key_start
= 0;
9796 keys
= XVECTOR (saved_keys
)->contents
;
9797 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
9798 add_command_key (keys
[i
]);
9800 for (i
= 0; i
< SCHARS (function
); i
++)
9801 add_command_key (Faref (function
, make_number (i
)));
9803 add_command_key (make_number ('\015'));
9806 last_point_position
= saved_last_point_position
;
9807 last_point_position_buffer
= saved_last_point_position_buffer
;
9811 function
= Fintern (function
, Qnil
);
9812 current_kboard
->Vprefix_arg
= prefixarg
;
9813 Vthis_command
= function
;
9814 real_this_command
= function
;
9816 /* If enabled, show which key runs this command. */
9817 if (!NILP (Vsuggest_key_bindings
)
9818 && NILP (Vexecuting_kbd_macro
)
9819 && SYMBOLP (function
))
9820 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
9826 GCPRO2 (bindings
, value
);
9827 value
= Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
9829 /* If the command has a key binding, print it now. */
9830 if (!NILP (bindings
)
9831 && ! (VECTORP (bindings
) && EQ (Faref (bindings
, make_number (0)),
9834 /* But first wait, and skip the message if there is input. */
9836 if (!NILP (echo_area_buffer
[0]))
9837 /* This command displayed something in the echo area;
9838 so wait a few seconds, then display our suggestion message. */
9839 delay_time
= (NUMBERP (Vsuggest_key_bindings
)
9840 ? XINT (Vsuggest_key_bindings
) : 2);
9842 /* This command left the echo area empty,
9843 so display our message immediately. */
9846 if (!NILP (Fsit_for (make_number (delay_time
), Qnil
, Qnil
))
9847 && ! CONSP (Vunread_command_events
))
9849 Lisp_Object binding
;
9851 int message_p
= push_message ();
9852 int count
= SPECPDL_INDEX ();
9854 record_unwind_protect (pop_message_unwind
, Qnil
);
9855 binding
= Fkey_description (bindings
, Qnil
);
9858 = (char *) alloca (SCHARS (SYMBOL_NAME (function
))
9861 sprintf (newmessage
, "You can run the command `%s' with %s",
9862 SDATA (SYMBOL_NAME (function
)),
9864 message2_nolog (newmessage
,
9865 strlen (newmessage
),
9866 STRING_MULTIBYTE (binding
));
9867 if (!NILP (Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
9868 ? Vsuggest_key_bindings
: make_number (2)),
9873 unbind_to (count
, Qnil
);
9877 RETURN_UNGCPRO (value
);
9881 /* Return nonzero if input events are pending. */
9884 detect_input_pending ()
9887 get_input_pending (&input_pending
, 0);
9889 return input_pending
;
9892 /* Return nonzero if input events other than mouse movements are
9896 detect_input_pending_ignore_squeezables ()
9899 get_input_pending (&input_pending
, READABLE_EVENTS_IGNORE_SQUEEZABLES
);
9901 return input_pending
;
9904 /* Return nonzero if input events are pending, and run any pending timers. */
9907 detect_input_pending_run_timers (do_display
)
9910 int old_timers_run
= timers_run
;
9913 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
9915 if (old_timers_run
!= timers_run
&& do_display
)
9917 redisplay_preserve_echo_area (8);
9918 /* The following fixes a bug when using lazy-lock with
9919 lazy-lock-defer-on-the-fly set to t, i.e. when fontifying
9920 from an idle timer function. The symptom of the bug is that
9921 the cursor sometimes doesn't become visible until the next X
9922 event is processed. --gerd. */
9924 rif
->flush_display (NULL
);
9927 return input_pending
;
9930 /* This is called in some cases before a possible quit.
9931 It cases the next call to detect_input_pending to recompute input_pending.
9932 So calling this function unnecessarily can't do any harm. */
9935 clear_input_pending ()
9940 /* Return nonzero if there are pending requeued events.
9941 This isn't used yet. The hope is to make wait_reading_process_output
9942 call it, and return if it runs Lisp code that unreads something.
9943 The problem is, kbd_buffer_get_event needs to be fixed to know what
9944 to do in that case. It isn't trivial. */
9947 requeued_events_pending_p ()
9949 return (!NILP (Vunread_command_events
) || unread_command_char
!= -1);
9953 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
9954 doc
: /* Return t if command input is currently available with no wait.
9955 Actually, the value is nil only if we can be sure that no input is available;
9956 if there is a doubt, the value is t. */)
9959 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
9962 get_input_pending (&input_pending
,
9963 READABLE_EVENTS_DO_TIMERS_NOW
9964 | READABLE_EVENTS_FILTER_EVENTS
);
9965 return input_pending
> 0 ? Qt
: Qnil
;
9968 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
9969 doc
: /* Return vector of last 100 events, not counting those from keyboard macros. */)
9972 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
9975 if (total_keys
< NUM_RECENT_KEYS
)
9976 return Fvector (total_keys
, keys
);
9979 val
= Fvector (NUM_RECENT_KEYS
, keys
);
9980 bcopy (keys
+ recent_keys_index
,
9981 XVECTOR (val
)->contents
,
9982 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
9984 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
9985 recent_keys_index
* sizeof (Lisp_Object
));
9990 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
9991 doc
: /* Return the key sequence that invoked this command.
9992 However, if the command has called `read-key-sequence', it returns
9993 the last key sequence that has been read.
9994 The value is a string or a vector. */)
9997 return make_event_array (this_command_key_count
,
9998 XVECTOR (this_command_keys
)->contents
);
10001 DEFUN ("this-command-keys-vector", Fthis_command_keys_vector
, Sthis_command_keys_vector
, 0, 0, 0,
10002 doc
: /* Return the key sequence that invoked this command, as a vector.
10003 However, if the command has called `read-key-sequence', it returns
10004 the last key sequence that has been read. */)
10007 return Fvector (this_command_key_count
,
10008 XVECTOR (this_command_keys
)->contents
);
10011 DEFUN ("this-single-command-keys", Fthis_single_command_keys
,
10012 Sthis_single_command_keys
, 0, 0, 0,
10013 doc
: /* Return the key sequence that invoked this command.
10014 More generally, it returns the last key sequence read, either by
10015 the command loop or by `read-key-sequence'.
10016 Unlike `this-command-keys', this function's value
10017 does not include prefix arguments.
10018 The value is always a vector. */)
10021 return Fvector (this_command_key_count
10022 - this_single_command_key_start
,
10023 (XVECTOR (this_command_keys
)->contents
10024 + this_single_command_key_start
));
10027 DEFUN ("this-single-command-raw-keys", Fthis_single_command_raw_keys
,
10028 Sthis_single_command_raw_keys
, 0, 0, 0,
10029 doc
: /* Return the raw events that were read for this command.
10030 More generally, it returns the last key sequence read, either by
10031 the command loop or by `read-key-sequence'.
10032 Unlike `this-single-command-keys', this function's value
10033 shows the events before all translations (except for input methods).
10034 The value is always a vector. */)
10037 return Fvector (raw_keybuf_count
,
10038 (XVECTOR (raw_keybuf
)->contents
));
10041 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
10042 Sreset_this_command_lengths
, 0, 0, 0,
10043 doc
: /* Make the unread events replace the last command and echo.
10044 Used in `universal-argument-other-key'.
10046 `universal-argument-other-key' rereads the event just typed.
10047 It then gets translated through `function-key-map'.
10048 The translated event has to replace the real events,
10049 both in the value of (this-command-keys) and in echoing.
10050 To achieve this, `universal-argument-other-key' calls
10051 `reset-this-command-lengths', which discards the record of reading
10052 these events the first time. */)
10055 this_command_key_count
= before_command_key_count
;
10056 if (this_command_key_count
< this_single_command_key_start
)
10057 this_single_command_key_start
= this_command_key_count
;
10059 echo_truncate (before_command_echo_length
);
10061 /* Cause whatever we put into unread-command-events
10062 to echo as if it were being freshly read from the keyboard. */
10063 this_command_key_count_reset
= 1;
10068 DEFUN ("clear-this-command-keys", Fclear_this_command_keys
,
10069 Sclear_this_command_keys
, 0, 1, 0,
10070 doc
: /* Clear out the vector that `this-command-keys' returns.
10071 Also clear the record of the last 100 events, unless optional arg
10072 KEEP-RECORD is non-nil. */)
10074 Lisp_Object keep_record
;
10078 this_command_key_count
= 0;
10079 this_command_key_count_reset
= 0;
10081 if (NILP (keep_record
))
10083 for (i
= 0; i
< XVECTOR (recent_keys
)->size
; ++i
)
10084 XVECTOR (recent_keys
)->contents
[i
] = Qnil
;
10086 recent_keys_index
= 0;
10091 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
10092 doc
: /* Return the current depth in recursive edits. */)
10096 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
10100 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
10101 "FOpen dribble file: ",
10102 doc
: /* Start writing all keyboard characters to a dribble file called FILE.
10103 If FILE is nil, close any open dribble file. */)
10114 file
= Fexpand_file_name (file
, Qnil
);
10115 dribble
= fopen (SDATA (file
), "w");
10117 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
10122 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
10123 doc
: /* Discard the contents of the terminal input buffer.
10124 Also end any kbd macro being defined. */)
10127 if (!NILP (current_kboard
->defining_kbd_macro
))
10129 /* Discard the last command from the macro. */
10130 Fcancel_kbd_macro_events ();
10134 update_mode_lines
++;
10136 Vunread_command_events
= Qnil
;
10137 unread_command_char
= -1;
10139 discard_tty_input ();
10141 kbd_fetch_ptr
= kbd_store_ptr
;
10147 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
10148 doc
: /* Stop Emacs and return to superior process. You can resume later.
10149 If `cannot-suspend' is non-nil, or if the system doesn't support job
10150 control, run a subshell instead.
10152 If optional arg STUFFSTRING is non-nil, its characters are stuffed
10153 to be read as terminal input by Emacs's parent, after suspension.
10155 Before suspending, run the normal hook `suspend-hook'.
10156 After resumption run the normal hook `suspend-resume-hook'.
10158 Some operating systems cannot stop the Emacs process and resume it later.
10159 On such systems, Emacs starts a subshell instead of suspending. */)
10161 Lisp_Object stuffstring
;
10163 int count
= SPECPDL_INDEX ();
10164 int old_height
, old_width
;
10166 struct gcpro gcpro1
;
10168 if (!NILP (stuffstring
))
10169 CHECK_STRING (stuffstring
);
10171 /* Run the functions in suspend-hook. */
10172 if (!NILP (Vrun_hooks
))
10173 call1 (Vrun_hooks
, intern ("suspend-hook"));
10175 GCPRO1 (stuffstring
);
10176 get_frame_size (&old_width
, &old_height
);
10177 reset_sys_modes ();
10178 /* sys_suspend can get an error if it tries to fork a subshell
10179 and the system resources aren't available for that. */
10180 record_unwind_protect ((Lisp_Object (*) P_ ((Lisp_Object
))) init_sys_modes
,
10182 stuff_buffered_input (stuffstring
);
10183 if (cannot_suspend
)
10187 unbind_to (count
, Qnil
);
10189 /* Check if terminal/window size has changed.
10190 Note that this is not useful when we are running directly
10191 with a window system; but suspend should be disabled in that case. */
10192 get_frame_size (&width
, &height
);
10193 if (width
!= old_width
|| height
!= old_height
)
10194 change_frame_size (SELECTED_FRAME (), height
, width
, 0, 0, 0);
10196 /* Run suspend-resume-hook. */
10197 if (!NILP (Vrun_hooks
))
10198 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
10204 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
10205 Then in any case stuff anything Emacs has read ahead and not used. */
10208 stuff_buffered_input (stuffstring
)
10209 Lisp_Object stuffstring
;
10211 #ifdef SIGTSTP /* stuff_char is defined if SIGTSTP. */
10212 register unsigned char *p
;
10214 if (STRINGP (stuffstring
))
10216 register int count
;
10218 p
= SDATA (stuffstring
);
10219 count
= SBYTES (stuffstring
);
10220 while (count
-- > 0)
10225 /* Anything we have read ahead, put back for the shell to read. */
10226 /* ?? What should this do when we have multiple keyboards??
10227 Should we ignore anything that was typed in at the "wrong" kboard?
10229 rms: we should stuff everything back into the kboard
10231 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
10234 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
10235 kbd_fetch_ptr
= kbd_buffer
;
10236 if (kbd_fetch_ptr
->kind
== ASCII_KEYSTROKE_EVENT
)
10237 stuff_char (kbd_fetch_ptr
->code
);
10239 clear_event (kbd_fetch_ptr
);
10243 #endif /* SIGTSTP */
10247 set_waiting_for_input (time_to_clear
)
10248 EMACS_TIME
*time_to_clear
;
10250 input_available_clear_time
= time_to_clear
;
10252 /* Tell interrupt_signal to throw back to read_char, */
10253 waiting_for_input
= 1;
10255 /* If interrupt_signal was called before and buffered a C-g,
10256 make it run again now, to avoid timing error. */
10257 if (!NILP (Vquit_flag
))
10258 quit_throw_to_read_char ();
10262 clear_waiting_for_input ()
10264 /* Tell interrupt_signal not to throw back to read_char, */
10265 waiting_for_input
= 0;
10266 input_available_clear_time
= 0;
10269 /* This routine is called at interrupt level in response to C-g.
10271 If interrupt_input, this is the handler for SIGINT. Otherwise, it
10272 is called from kbd_buffer_store_event, in handling SIGIO or
10275 If `waiting_for_input' is non zero, then unless `echoing' is
10276 nonzero, immediately throw back to read_char.
10278 Otherwise it sets the Lisp variable quit-flag not-nil. This causes
10279 eval to throw, when it gets a chance. If quit-flag is already
10280 non-nil, it stops the job right away. */
10283 interrupt_signal (signalnum
) /* If we don't have an argument, */
10284 int signalnum
; /* some compilers complain in signal calls. */
10287 /* Must preserve main program's value of errno. */
10288 int old_errno
= errno
;
10289 struct frame
*sf
= SELECTED_FRAME ();
10291 #if defined (USG) && !defined (POSIX_SIGNALS)
10292 if (!read_socket_hook
&& NILP (Vwindow_system
))
10294 /* USG systems forget handlers when they are used;
10295 must reestablish each time */
10296 signal (SIGINT
, interrupt_signal
);
10297 signal (SIGQUIT
, interrupt_signal
);
10301 SIGNAL_THREAD_CHECK (signalnum
);
10304 if (!NILP (Vquit_flag
)
10305 && (FRAME_TERMCAP_P (sf
) || FRAME_MSDOS_P (sf
)))
10307 /* If SIGINT isn't blocked, don't let us be interrupted by
10308 another SIGINT, it might be harmful due to non-reentrancy
10309 in I/O functions. */
10310 sigblock (sigmask (SIGINT
));
10313 reset_sys_modes ();
10315 #ifdef SIGTSTP /* Support possible in later USG versions */
10317 * On systems which can suspend the current process and return to the original
10318 * shell, this command causes the user to end up back at the shell.
10319 * The "Auto-save" and "Abort" questions are not asked until
10320 * the user elects to return to emacs, at which point he can save the current
10321 * job and either dump core or continue.
10326 if (sys_suspend () == -1)
10328 printf ("Not running as a subprocess;\n");
10329 printf ("you can continue or abort.\n");
10331 #else /* not VMS */
10332 /* Perhaps should really fork an inferior shell?
10333 But that would not provide any way to get back
10334 to the original shell, ever. */
10335 printf ("No support for stopping a process on this operating system;\n");
10336 printf ("you can continue or abort.\n");
10337 #endif /* not VMS */
10338 #endif /* not SIGTSTP */
10340 /* We must remain inside the screen area when the internal terminal
10341 is used. Note that [Enter] is not echoed by dos. */
10344 /* It doesn't work to autosave while GC is in progress;
10345 the code used for auto-saving doesn't cope with the mark bit. */
10346 if (!gc_in_progress
)
10348 printf ("Auto-save? (y or n) ");
10350 if (((c
= getchar ()) & ~040) == 'Y')
10352 Fdo_auto_save (Qt
, Qnil
);
10354 printf ("\r\nAuto-save done");
10355 #else /* not MSDOS */
10356 printf ("Auto-save done\n");
10357 #endif /* not MSDOS */
10359 while (c
!= '\n') c
= getchar ();
10363 /* During GC, it must be safe to reenable quitting again. */
10364 Vinhibit_quit
= Qnil
;
10367 #endif /* not MSDOS */
10368 printf ("Garbage collection in progress; cannot auto-save now\r\n");
10369 printf ("but will instead do a real quit after garbage collection ends\r\n");
10374 printf ("\r\nAbort? (y or n) ");
10375 #else /* not MSDOS */
10377 printf ("Abort (and enter debugger)? (y or n) ");
10378 #else /* not VMS */
10379 printf ("Abort (and dump core)? (y or n) ");
10380 #endif /* not VMS */
10381 #endif /* not MSDOS */
10383 if (((c
= getchar ()) & ~040) == 'Y')
10385 while (c
!= '\n') c
= getchar ();
10387 printf ("\r\nContinuing...\r\n");
10388 #else /* not MSDOS */
10389 printf ("Continuing...\n");
10390 #endif /* not MSDOS */
10397 /* If executing a function that wants to be interrupted out of
10398 and the user has not deferred quitting by binding `inhibit-quit'
10399 then quit right away. */
10400 if (immediate_quit
&& NILP (Vinhibit_quit
))
10402 struct gl_state_s saved
;
10403 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
10405 immediate_quit
= 0;
10408 GCPRO4 (saved
.object
, saved
.global_code
,
10409 saved
.current_syntax_table
, saved
.old_prop
);
10410 Fsignal (Qquit
, Qnil
);
10415 /* Else request quit when it's safe */
10419 if (waiting_for_input
&& !echoing
)
10420 quit_throw_to_read_char ();
10425 /* Handle a C-g by making read_char return C-g. */
10428 quit_throw_to_read_char ()
10431 /* Prevent another signal from doing this before we finish. */
10432 clear_waiting_for_input ();
10435 Vunread_command_events
= Qnil
;
10436 unread_command_char
= -1;
10438 #if 0 /* Currently, sit_for is called from read_char without turning
10439 off polling. And that can call set_waiting_for_input.
10440 It seems to be harmless. */
10441 #ifdef POLL_FOR_INPUT
10442 /* May be > 1 if in recursive minibuffer. */
10443 if (poll_suppress_count
== 0)
10447 if (FRAMEP (internal_last_event_frame
)
10448 && !EQ (internal_last_event_frame
, selected_frame
))
10449 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
10452 _longjmp (getcjmp
, 1);
10455 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
10456 doc
: /* Set mode of reading keyboard input.
10457 First arg INTERRUPT non-nil means use input interrupts;
10458 nil means use CBREAK mode.
10459 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal
10460 (no effect except in CBREAK mode).
10461 Third arg META t means accept 8-bit input (for a Meta key).
10462 META nil means ignore the top bit, on the assumption it is parity.
10463 Otherwise, accept 8-bit input and don't use the top bit for Meta.
10464 Optional fourth arg QUIT if non-nil specifies character to use for quitting.
10465 See also `current-input-mode'. */)
10466 (interrupt
, flow
, meta
, quit
)
10467 Lisp_Object interrupt
, flow
, meta
, quit
;
10470 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
10471 error ("set-input-mode: QUIT must be an ASCII character");
10473 #ifdef POLL_FOR_INPUT
10478 /* this causes startup screen to be restored and messes with the mouse */
10479 reset_sys_modes ();
10483 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10484 if (read_socket_hook
)
10486 /* When using X, don't give the user a real choice,
10487 because we haven't implemented the mechanisms to support it. */
10488 #ifdef NO_SOCK_SIGIO
10489 interrupt_input
= 0;
10490 #else /* not NO_SOCK_SIGIO */
10491 interrupt_input
= 1;
10492 #endif /* NO_SOCK_SIGIO */
10495 interrupt_input
= !NILP (interrupt
);
10496 #else /* not SIGIO */
10497 interrupt_input
= 0;
10498 #endif /* not SIGIO */
10500 /* Our VMS input only works by interrupts, as of now. */
10502 interrupt_input
= 1;
10505 flow_control
= !NILP (flow
);
10508 else if (EQ (meta
, Qt
))
10513 /* Don't let this value be out of range. */
10514 quit_char
= XINT (quit
) & (meta_key
? 0377 : 0177);
10520 #ifdef POLL_FOR_INPUT
10521 poll_suppress_count
= 1;
10527 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
10528 doc
: /* Return information about the way Emacs currently reads keyboard input.
10529 The value is a list of the form (INTERRUPT FLOW META QUIT), where
10530 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if
10531 nil, Emacs is using CBREAK mode.
10532 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the
10533 terminal; this does not apply if Emacs uses interrupt-driven input.
10534 META is t if accepting 8-bit input with 8th bit as Meta flag.
10535 META nil means ignoring the top bit, on the assumption it is parity.
10536 META is neither t nor nil if accepting 8-bit input and using
10537 all 8 bits as the character code.
10538 QUIT is the character Emacs currently uses to quit.
10539 The elements of this list correspond to the arguments of
10540 `set-input-mode'. */)
10543 Lisp_Object val
[4];
10545 val
[0] = interrupt_input
? Qt
: Qnil
;
10546 val
[1] = flow_control
? Qt
: Qnil
;
10547 val
[2] = meta_key
== 2 ? make_number (0) : meta_key
== 1 ? Qt
: Qnil
;
10548 XSETFASTINT (val
[3], quit_char
);
10550 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
10553 DEFUN ("posn-at-x-y", Fposn_at_x_y
, Sposn_at_x_y
, 2, 4, 0,
10554 doc
: /* Return position information for pixel coordinates X and Y.
10555 By default, X and Y are relative to text area of the selected window.
10556 Optional third arg FRAME-OR-WINDOW non-nil specifies frame or window.
10557 If optional fourth arg WHOLE is non-nil, X is relative to the left
10558 edge of the window.
10560 The return value is similar to a mouse click position:
10561 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10562 IMAGE (DX . DY) (WIDTH . HEIGHT))
10563 The `posn-' functions access elements of such lists. */)
10564 (x
, y
, frame_or_window
, whole
)
10565 Lisp_Object x
, y
, frame_or_window
, whole
;
10570 if (NILP (frame_or_window
))
10571 frame_or_window
= selected_window
;
10573 if (WINDOWP (frame_or_window
))
10577 CHECK_LIVE_WINDOW (frame_or_window
);
10579 w
= XWINDOW (frame_or_window
);
10580 XSETINT (x
, (WINDOW_TO_FRAME_PIXEL_X (w
, XINT (x
))
10582 ? window_box_left_offset (w
, TEXT_AREA
)
10583 : - (WINDOW_LEFT_SCROLL_BAR_COLS (w
)
10584 * WINDOW_FRAME_COLUMN_WIDTH (w
)))));
10585 XSETINT (y
, WINDOW_TO_FRAME_PIXEL_Y (w
, XINT (y
)));
10586 frame_or_window
= w
->frame
;
10589 CHECK_LIVE_FRAME (frame_or_window
);
10591 return make_lispy_position (XFRAME (frame_or_window
), &x
, &y
, 0);
10594 DEFUN ("posn-at-point", Fposn_at_point
, Sposn_at_point
, 0, 2, 0,
10595 doc
: /* Return position information for buffer POS in WINDOW.
10596 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
10598 Return nil if position is not visible in window. Otherwise,
10599 the return value is similar to that returned by `event-start' for
10600 a mouse click at the upper left corner of the glyph corresponding
10601 to the given buffer position:
10602 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10603 IMAGE (DX . DY) (WIDTH . HEIGHT))
10604 The `posn-' functions access elements of such lists. */)
10606 Lisp_Object pos
, window
;
10610 tem
= Fpos_visible_in_window_p (pos
, window
, Qt
);
10612 tem
= Fposn_at_x_y (XCAR (tem
), XCAR (XCDR (tem
)), window
, Qnil
);
10618 * Set up a new kboard object with reasonable initial values.
10624 kb
->Voverriding_terminal_local_map
= Qnil
;
10625 kb
->Vlast_command
= Qnil
;
10626 kb
->Vreal_last_command
= Qnil
;
10627 kb
->Vprefix_arg
= Qnil
;
10628 kb
->Vlast_prefix_arg
= Qnil
;
10629 kb
->kbd_queue
= Qnil
;
10630 kb
->kbd_queue_has_data
= 0;
10631 kb
->immediate_echo
= 0;
10632 kb
->echo_string
= Qnil
;
10633 kb
->echo_after_prompt
= -1;
10634 kb
->kbd_macro_buffer
= 0;
10635 kb
->kbd_macro_bufsize
= 0;
10636 kb
->defining_kbd_macro
= Qnil
;
10637 kb
->Vlast_kbd_macro
= Qnil
;
10638 kb
->reference_count
= 0;
10639 kb
->Vsystem_key_alist
= Qnil
;
10640 kb
->system_key_syms
= Qnil
;
10641 kb
->Vdefault_minibuffer_frame
= Qnil
;
10645 * Destroy the contents of a kboard object, but not the object itself.
10646 * We use this just before deleting it, or if we're going to initialize
10647 * it a second time.
10653 if (kb
->kbd_macro_buffer
)
10654 xfree (kb
->kbd_macro_buffer
);
10657 #ifdef MULTI_KBOARD
10659 /* Free KB and memory referenced from it. */
10667 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
10670 *kbp
= kb
->next_kboard
;
10672 /* Prevent a dangling reference to KB. */
10673 if (kb
== current_kboard
10674 && FRAMEP (selected_frame
)
10675 && FRAME_LIVE_P (XFRAME (selected_frame
)))
10677 current_kboard
= XFRAME (selected_frame
)->kboard
;
10678 if (current_kboard
== kb
)
10686 #endif /* MULTI_KBOARD */
10691 /* This is correct before outermost invocation of the editor loop */
10692 command_loop_level
= -1;
10693 immediate_quit
= 0;
10694 quit_char
= Ctl ('g');
10695 Vunread_command_events
= Qnil
;
10696 unread_command_char
= -1;
10697 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
10699 recent_keys_index
= 0;
10700 kbd_fetch_ptr
= kbd_buffer
;
10701 kbd_store_ptr
= kbd_buffer
;
10703 do_mouse_tracking
= Qnil
;
10707 /* This means that command_loop_1 won't try to select anything the first
10709 internal_last_event_frame
= Qnil
;
10710 Vlast_event_frame
= internal_last_event_frame
;
10712 #ifdef MULTI_KBOARD
10713 current_kboard
= initial_kboard
;
10715 wipe_kboard (current_kboard
);
10716 init_kboard (current_kboard
);
10718 if (!noninteractive
&& !read_socket_hook
&& NILP (Vwindow_system
))
10720 signal (SIGINT
, interrupt_signal
);
10721 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
10722 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
10723 SIGQUIT and we can't tell which one it will give us. */
10724 signal (SIGQUIT
, interrupt_signal
);
10725 #endif /* HAVE_TERMIO */
10727 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10729 if (!noninteractive
)
10730 signal (SIGIO
, input_available_signal
);
10733 /* Use interrupt input by default, if it works and noninterrupt input
10734 has deficiencies. */
10736 #ifdef INTERRUPT_INPUT
10737 interrupt_input
= 1;
10739 interrupt_input
= 0;
10742 /* Our VMS input only works by interrupts, as of now. */
10744 interrupt_input
= 1;
10750 if (keyboard_init_hook
)
10751 (*keyboard_init_hook
) ();
10753 #ifdef POLL_FOR_INPUT
10754 poll_suppress_count
= 1;
10759 /* This type's only use is in syms_of_keyboard, to initialize the
10760 event header symbols and put properties on them. */
10761 struct event_head
{
10767 struct event_head head_table
[] = {
10768 {&Qmouse_movement
, "mouse-movement", &Qmouse_movement
},
10769 {&Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
},
10770 {&Qswitch_frame
, "switch-frame", &Qswitch_frame
},
10771 {&Qdelete_frame
, "delete-frame", &Qdelete_frame
},
10772 {&Qiconify_frame
, "iconify-frame", &Qiconify_frame
},
10773 {&Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
},
10774 /* `select-window' should be handled just like `switch-frame'
10775 in read_key_sequence. */
10776 {&Qselect_window
, "select-window", &Qswitch_frame
}
10780 syms_of_keyboard ()
10782 Vpre_help_message
= Qnil
;
10783 staticpro (&Vpre_help_message
);
10785 Vlispy_mouse_stem
= build_string ("mouse");
10786 staticpro (&Vlispy_mouse_stem
);
10789 QCimage
= intern (":image");
10790 staticpro (&QCimage
);
10792 staticpro (&Qhelp_echo
);
10793 Qhelp_echo
= intern ("help-echo");
10795 staticpro (&item_properties
);
10796 item_properties
= Qnil
;
10798 staticpro (&tool_bar_item_properties
);
10799 tool_bar_item_properties
= Qnil
;
10800 staticpro (&tool_bar_items_vector
);
10801 tool_bar_items_vector
= Qnil
;
10803 staticpro (&real_this_command
);
10804 real_this_command
= Qnil
;
10806 Qtimer_event_handler
= intern ("timer-event-handler");
10807 staticpro (&Qtimer_event_handler
);
10809 Qdisabled_command_function
= intern ("disabled-command-function");
10810 staticpro (&Qdisabled_command_function
);
10812 Qself_insert_command
= intern ("self-insert-command");
10813 staticpro (&Qself_insert_command
);
10815 Qforward_char
= intern ("forward-char");
10816 staticpro (&Qforward_char
);
10818 Qbackward_char
= intern ("backward-char");
10819 staticpro (&Qbackward_char
);
10821 Qdisabled
= intern ("disabled");
10822 staticpro (&Qdisabled
);
10824 Qundefined
= intern ("undefined");
10825 staticpro (&Qundefined
);
10827 Qpre_command_hook
= intern ("pre-command-hook");
10828 staticpro (&Qpre_command_hook
);
10830 Qpost_command_hook
= intern ("post-command-hook");
10831 staticpro (&Qpost_command_hook
);
10833 Qdeferred_action_function
= intern ("deferred-action-function");
10834 staticpro (&Qdeferred_action_function
);
10836 Qcommand_hook_internal
= intern ("command-hook-internal");
10837 staticpro (&Qcommand_hook_internal
);
10839 Qfunction_key
= intern ("function-key");
10840 staticpro (&Qfunction_key
);
10841 Qmouse_click
= intern ("mouse-click");
10842 staticpro (&Qmouse_click
);
10843 #if defined (WINDOWSNT) || defined (MAC_OS)
10844 Qlanguage_change
= intern ("language-change");
10845 staticpro (&Qlanguage_change
);
10847 Qdrag_n_drop
= intern ("drag-n-drop");
10848 staticpro (&Qdrag_n_drop
);
10850 Qsave_session
= intern ("save-session");
10851 staticpro (&Qsave_session
);
10853 Qusr1_signal
= intern ("usr1-signal");
10854 staticpro (&Qusr1_signal
);
10855 Qusr2_signal
= intern ("usr2-signal");
10856 staticpro (&Qusr2_signal
);
10858 Qmenu_enable
= intern ("menu-enable");
10859 staticpro (&Qmenu_enable
);
10860 Qmenu_alias
= intern ("menu-alias");
10861 staticpro (&Qmenu_alias
);
10862 QCenable
= intern (":enable");
10863 staticpro (&QCenable
);
10864 QCvisible
= intern (":visible");
10865 staticpro (&QCvisible
);
10866 QChelp
= intern (":help");
10867 staticpro (&QChelp
);
10868 QCfilter
= intern (":filter");
10869 staticpro (&QCfilter
);
10870 QCbutton
= intern (":button");
10871 staticpro (&QCbutton
);
10872 QCkeys
= intern (":keys");
10873 staticpro (&QCkeys
);
10874 QCkey_sequence
= intern (":key-sequence");
10875 staticpro (&QCkey_sequence
);
10876 QCtoggle
= intern (":toggle");
10877 staticpro (&QCtoggle
);
10878 QCradio
= intern (":radio");
10879 staticpro (&QCradio
);
10881 Qmode_line
= intern ("mode-line");
10882 staticpro (&Qmode_line
);
10883 Qvertical_line
= intern ("vertical-line");
10884 staticpro (&Qvertical_line
);
10885 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
10886 staticpro (&Qvertical_scroll_bar
);
10887 Qmenu_bar
= intern ("menu-bar");
10888 staticpro (&Qmenu_bar
);
10891 Qmouse_fixup_help_message
= intern ("mouse-fixup-help-message");
10892 staticpro (&Qmouse_fixup_help_message
);
10895 Qabove_handle
= intern ("above-handle");
10896 staticpro (&Qabove_handle
);
10897 Qhandle
= intern ("handle");
10898 staticpro (&Qhandle
);
10899 Qbelow_handle
= intern ("below-handle");
10900 staticpro (&Qbelow_handle
);
10901 Qup
= intern ("up");
10903 Qdown
= intern ("down");
10904 staticpro (&Qdown
);
10905 Qtop
= intern ("top");
10907 Qbottom
= intern ("bottom");
10908 staticpro (&Qbottom
);
10909 Qend_scroll
= intern ("end-scroll");
10910 staticpro (&Qend_scroll
);
10911 Qratio
= intern ("ratio");
10912 staticpro (&Qratio
);
10914 Qevent_kind
= intern ("event-kind");
10915 staticpro (&Qevent_kind
);
10916 Qevent_symbol_elements
= intern ("event-symbol-elements");
10917 staticpro (&Qevent_symbol_elements
);
10918 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
10919 staticpro (&Qevent_symbol_element_mask
);
10920 Qmodifier_cache
= intern ("modifier-cache");
10921 staticpro (&Qmodifier_cache
);
10923 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
10924 staticpro (&Qrecompute_lucid_menubar
);
10925 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
10926 staticpro (&Qactivate_menubar_hook
);
10928 Qpolling_period
= intern ("polling-period");
10929 staticpro (&Qpolling_period
);
10931 Qinput_method_function
= intern ("input-method-function");
10932 staticpro (&Qinput_method_function
);
10934 Qinput_method_exit_on_first_char
= intern ("input-method-exit-on-first-char");
10935 staticpro (&Qinput_method_exit_on_first_char
);
10936 Qinput_method_use_echo_area
= intern ("input-method-use-echo-area");
10937 staticpro (&Qinput_method_use_echo_area
);
10939 Fset (Qinput_method_exit_on_first_char
, Qnil
);
10940 Fset (Qinput_method_use_echo_area
, Qnil
);
10942 last_point_position_buffer
= Qnil
;
10945 struct event_head
*p
;
10947 for (p
= head_table
;
10948 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
10951 *p
->var
= intern (p
->name
);
10952 staticpro (p
->var
);
10953 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
10954 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
10958 button_down_location
= Fmake_vector (make_number (1), Qnil
);
10959 staticpro (&button_down_location
);
10960 mouse_syms
= Fmake_vector (make_number (1), Qnil
);
10961 staticpro (&mouse_syms
);
10962 wheel_syms
= Fmake_vector (make_number (2), Qnil
);
10963 staticpro (&wheel_syms
);
10967 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
10969 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
10970 for (i
= 0; i
< len
; i
++)
10971 if (modifier_names
[i
])
10972 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
10973 staticpro (&modifier_symbols
);
10976 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
10977 staticpro (&recent_keys
);
10979 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
10980 staticpro (&this_command_keys
);
10982 raw_keybuf
= Fmake_vector (make_number (30), Qnil
);
10983 staticpro (&raw_keybuf
);
10985 Qextended_command_history
= intern ("extended-command-history");
10986 Fset (Qextended_command_history
, Qnil
);
10987 staticpro (&Qextended_command_history
);
10989 accent_key_syms
= Qnil
;
10990 staticpro (&accent_key_syms
);
10992 func_key_syms
= Qnil
;
10993 staticpro (&func_key_syms
);
10995 drag_n_drop_syms
= Qnil
;
10996 staticpro (&drag_n_drop_syms
);
10998 unread_switch_frame
= Qnil
;
10999 staticpro (&unread_switch_frame
);
11001 internal_last_event_frame
= Qnil
;
11002 staticpro (&internal_last_event_frame
);
11004 read_key_sequence_cmd
= Qnil
;
11005 staticpro (&read_key_sequence_cmd
);
11007 menu_bar_one_keymap_changed_items
= Qnil
;
11008 staticpro (&menu_bar_one_keymap_changed_items
);
11010 menu_bar_items_vector
= Qnil
;
11011 staticpro (&menu_bar_items_vector
);
11013 defsubr (&Sevent_convert_list
);
11014 defsubr (&Sread_key_sequence
);
11015 defsubr (&Sread_key_sequence_vector
);
11016 defsubr (&Srecursive_edit
);
11018 defsubr (&Strack_mouse
);
11020 defsubr (&Sinput_pending_p
);
11021 defsubr (&Scommand_execute
);
11022 defsubr (&Srecent_keys
);
11023 defsubr (&Sthis_command_keys
);
11024 defsubr (&Sthis_command_keys_vector
);
11025 defsubr (&Sthis_single_command_keys
);
11026 defsubr (&Sthis_single_command_raw_keys
);
11027 defsubr (&Sreset_this_command_lengths
);
11028 defsubr (&Sclear_this_command_keys
);
11029 defsubr (&Ssuspend_emacs
);
11030 defsubr (&Sabort_recursive_edit
);
11031 defsubr (&Sexit_recursive_edit
);
11032 defsubr (&Srecursion_depth
);
11033 defsubr (&Stop_level
);
11034 defsubr (&Sdiscard_input
);
11035 defsubr (&Sopen_dribble_file
);
11036 defsubr (&Sset_input_mode
);
11037 defsubr (&Scurrent_input_mode
);
11038 defsubr (&Sexecute_extended_command
);
11039 defsubr (&Sposn_at_point
);
11040 defsubr (&Sposn_at_x_y
);
11042 DEFVAR_LISP ("last-command-char", &last_command_char
,
11043 doc
: /* Last input event that was part of a command. */);
11045 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
11046 doc
: /* Last input event that was part of a command. */);
11048 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
11049 doc
: /* Last input event in a command, except for mouse menu events.
11050 Mouse menus give back keys that don't look like mouse events;
11051 this variable holds the actual mouse event that led to the menu,
11052 so that you can determine whether the command was run by mouse or not. */);
11054 DEFVAR_LISP ("last-input-char", &last_input_char
,
11055 doc
: /* Last input event. */);
11057 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
11058 doc
: /* Last input event. */);
11060 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
11061 doc
: /* List of events to be read as the command input.
11062 These events are processed first, before actual keyboard input. */);
11063 Vunread_command_events
= Qnil
;
11065 DEFVAR_INT ("unread-command-char", &unread_command_char
,
11066 doc
: /* If not -1, an object to be read as next command input event. */);
11068 DEFVAR_LISP ("unread-post-input-method-events", &Vunread_post_input_method_events
,
11069 doc
: /* List of events to be processed as input by input methods.
11070 These events are processed after `unread-command-events', but
11071 before actual keyboard input. */);
11072 Vunread_post_input_method_events
= Qnil
;
11074 DEFVAR_LISP ("unread-input-method-events", &Vunread_input_method_events
,
11075 doc
: /* List of events to be processed as input by input methods.
11076 These events are processed after `unread-command-events', but
11077 before actual keyboard input. */);
11078 Vunread_input_method_events
= Qnil
;
11080 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
11081 doc
: /* Meta-prefix character code.
11082 Meta-foo as command input turns into this character followed by foo. */);
11083 XSETINT (meta_prefix_char
, 033);
11085 DEFVAR_KBOARD ("last-command", Vlast_command
,
11086 doc
: /* The last command executed.
11087 Normally a symbol with a function definition, but can be whatever was found
11088 in the keymap, or whatever the variable `this-command' was set to by that
11091 The value `mode-exit' is special; it means that the previous command
11092 read an event that told it to exit, and it did so and unread that event.
11093 In other words, the present command is the event that made the previous
11096 The value `kill-region' is special; it means that the previous command
11097 was a kill command. */);
11099 DEFVAR_KBOARD ("real-last-command", Vreal_last_command
,
11100 doc
: /* Same as `last-command', but never altered by Lisp code. */);
11102 DEFVAR_LISP ("this-command", &Vthis_command
,
11103 doc
: /* The command now being executed.
11104 The command can set this variable; whatever is put here
11105 will be in `last-command' during the following command. */);
11106 Vthis_command
= Qnil
;
11108 DEFVAR_LISP ("this-original-command", &Vthis_original_command
,
11109 doc
: /* The command bound to the current key sequence before remapping.
11110 It equals `this-command' if the original command was not remapped through
11111 any of the active keymaps. Otherwise, the value of `this-command' is the
11112 result of looking up the original command in the active keymaps. */);
11113 Vthis_original_command
= Qnil
;
11115 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
11116 doc
: /* *Number of input events between auto-saves.
11117 Zero means disable autosaving due to number of characters typed. */);
11118 auto_save_interval
= 300;
11120 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
11121 doc
: /* *Number of seconds idle time before auto-save.
11122 Zero or nil means disable auto-saving due to idleness.
11123 After auto-saving due to this many seconds of idle time,
11124 Emacs also does a garbage collection if that seems to be warranted. */);
11125 XSETFASTINT (Vauto_save_timeout
, 30);
11127 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes
,
11128 doc
: /* *Nonzero means echo unfinished commands after this many seconds of pause.
11129 The value may be integer or floating point. */);
11130 Vecho_keystrokes
= make_number (1);
11132 DEFVAR_INT ("polling-period", &polling_period
,
11133 doc
: /* *Interval between polling for input during Lisp execution.
11134 The reason for polling is to make C-g work to stop a running program.
11135 Polling is needed only when using X windows and SIGIO does not work.
11136 Polling is automatically disabled in all other cases. */);
11137 polling_period
= 2;
11139 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
11140 doc
: /* *Maximum time between mouse clicks to make a double-click.
11141 Measured in milliseconds. nil means disable double-click recognition;
11142 t means double-clicks have no time limit and are detected
11143 by position only. */);
11144 Vdouble_click_time
= make_number (500);
11146 DEFVAR_INT ("double-click-fuzz", &double_click_fuzz
,
11147 doc
: /* *Maximum mouse movement between clicks to make a double-click.
11148 On window-system frames, value is the number of pixels the mouse may have
11149 moved horizontally or vertically between two clicks to make a double-click.
11150 On non window-system frames, value is interpreted in units of 1/8 characters
11153 This variable is also the threshold for motion of the mouse
11154 to count as a drag. */);
11155 double_click_fuzz
= 3;
11157 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
11158 doc
: /* *Non-nil means inhibit local map menu bar menus. */);
11159 inhibit_local_menu_bar_menus
= 0;
11161 DEFVAR_INT ("num-input-keys", &num_input_keys
,
11162 doc
: /* Number of complete key sequences read as input so far.
11163 This includes key sequences read from keyboard macros.
11164 The number is effectively the number of interactive command invocations. */);
11165 num_input_keys
= 0;
11167 DEFVAR_INT ("num-nonmacro-input-events", &num_nonmacro_input_events
,
11168 doc
: /* Number of input events read from the keyboard so far.
11169 This does not include events generated by keyboard macros. */);
11170 num_nonmacro_input_events
= 0;
11172 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
11173 doc
: /* The frame in which the most recently read event occurred.
11174 If the last event came from a keyboard macro, this is set to `macro'. */);
11175 Vlast_event_frame
= Qnil
;
11177 /* This variable is set up in sysdep.c. */
11178 DEFVAR_LISP ("tty-erase-char", &Vtty_erase_char
,
11179 doc
: /* The ERASE character as set by the user with stty. */);
11181 DEFVAR_LISP ("help-char", &Vhelp_char
,
11182 doc
: /* Character to recognize as meaning Help.
11183 When it is read, do `(eval help-form)', and display result if it's a string.
11184 If the value of `help-form' is nil, this char can be read normally. */);
11185 XSETINT (Vhelp_char
, Ctl ('H'));
11187 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
11188 doc
: /* List of input events to recognize as meaning Help.
11189 These work just like the value of `help-char' (see that). */);
11190 Vhelp_event_list
= Qnil
;
11192 DEFVAR_LISP ("help-form", &Vhelp_form
,
11193 doc
: /* Form to execute when character `help-char' is read.
11194 If the form returns a string, that string is displayed.
11195 If `help-form' is nil, the help char is not recognized. */);
11198 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
11199 doc
: /* Command to run when `help-char' character follows a prefix key.
11200 This command is used only when there is no actual binding
11201 for that character after that prefix key. */);
11202 Vprefix_help_command
= Qnil
;
11204 DEFVAR_LISP ("top-level", &Vtop_level
,
11205 doc
: /* Form to evaluate when Emacs starts up.
11206 Useful to set before you dump a modified Emacs. */);
11209 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
11210 doc
: /* Translate table for keyboard input, or nil.
11211 If non-nil, the value should be a char-table. Each character read
11212 from the keyboard is looked up in this char-table. If the value found
11213 there is non-nil, then it is used instead of the actual input character.
11215 The value can also be a string or vector, but this is considered obsolete.
11216 If it is a string or vector of length N, character codes N and up are left
11217 untranslated. In a vector, an element which is nil means "no translation".
11219 This is applied to the characters supplied to input methods, not their
11220 output. See also `translation-table-for-input'. */);
11221 Vkeyboard_translate_table
= Qnil
;
11223 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
11224 doc
: /* Non-nil means to always spawn a subshell instead of suspending.
11225 \(Even if the operating system has support for stopping a process.\) */);
11226 cannot_suspend
= 0;
11228 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
11229 doc
: /* Non-nil means prompt with menus when appropriate.
11230 This is done when reading from a keymap that has a prompt string,
11231 for elements that have prompt strings.
11232 The menu is displayed on the screen
11233 if X menus were enabled at configuration
11234 time and the previous event was a mouse click prefix key.
11235 Otherwise, menu prompting uses the echo area. */);
11236 menu_prompting
= 1;
11238 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
11239 doc
: /* Character to see next line of menu prompt.
11240 Type this character while in a menu prompt to rotate around the lines of it. */);
11241 XSETINT (menu_prompt_more_char
, ' ');
11243 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
11244 doc
: /* A mask of additional modifier keys to use with every keyboard character.
11245 Emacs applies the modifiers of the character stored here to each keyboard
11246 character it reads. For example, after evaluating the expression
11247 (setq extra-keyboard-modifiers ?\\C-x)
11248 all input characters will have the control modifier applied to them.
11250 Note that the character ?\\C-@, equivalent to the integer zero, does
11251 not count as a control character; rather, it counts as a character
11252 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero
11253 cancels any modification. */);
11254 extra_keyboard_modifiers
= 0;
11256 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
11257 doc
: /* If an editing command sets this to t, deactivate the mark afterward.
11258 The command loop sets this to nil before each command,
11259 and tests the value when the command returns.
11260 Buffer modification stores t in this variable. */);
11261 Vdeactivate_mark
= Qnil
;
11263 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
11264 doc
: /* Temporary storage of pre-command-hook or post-command-hook. */);
11265 Vcommand_hook_internal
= Qnil
;
11267 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
11268 doc
: /* Normal hook run before each command is executed.
11269 If an unhandled error happens in running this hook,
11270 the hook value is set to nil, since otherwise the error
11271 might happen repeatedly and make Emacs nonfunctional. */);
11272 Vpre_command_hook
= Qnil
;
11274 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
11275 doc
: /* Normal hook run after each command is executed.
11276 If an unhandled error happens in running this hook,
11277 the hook value is set to nil, since otherwise the error
11278 might happen repeatedly and make Emacs nonfunctional. */);
11279 Vpost_command_hook
= Qnil
;
11282 DEFVAR_LISP ("echo-area-clear-hook", ...,
11283 doc
: /* Normal hook run when clearing the echo area. */);
11285 Qecho_area_clear_hook
= intern ("echo-area-clear-hook");
11286 staticpro (&Qecho_area_clear_hook
);
11287 SET_SYMBOL_VALUE (Qecho_area_clear_hook
, Qnil
);
11289 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
11290 doc
: /* Non-nil means menu bar, specified Lucid style, needs to be recomputed. */);
11291 Vlucid_menu_bar_dirty_flag
= Qnil
;
11293 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
11294 doc
: /* List of menu bar items to move to the end of the menu bar.
11295 The elements of the list are event types that may have menu bar bindings. */);
11296 Vmenu_bar_final_items
= Qnil
;
11298 DEFVAR_KBOARD ("overriding-terminal-local-map",
11299 Voverriding_terminal_local_map
,
11300 doc
: /* Per-terminal keymap that overrides all other local keymaps.
11301 If this variable is non-nil, it is used as a keymap instead of the
11302 buffer's local map, and the minor mode keymaps and text property keymaps.
11303 It also replaces `overriding-local-map'.
11305 This variable is intended to let commands such as `universal-argument'
11306 set up a different keymap for reading the next command. */);
11308 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
11309 doc
: /* Keymap that overrides all other local keymaps.
11310 If this variable is non-nil, it is used as a keymap--replacing the
11311 buffer's local map, the minor mode keymaps, and char property keymaps. */);
11312 Voverriding_local_map
= Qnil
;
11314 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
11315 doc
: /* Non-nil means `overriding-local-map' applies to the menu bar.
11316 Otherwise, the menu bar continues to reflect the buffer's local map
11317 and the minor mode maps regardless of `overriding-local-map'. */);
11318 Voverriding_local_map_menu_flag
= Qnil
;
11320 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
11321 doc
: /* Keymap defining bindings for special events to execute at low level. */);
11322 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
11324 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
11325 doc
: /* *Non-nil means generate motion events for mouse motion. */);
11327 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
11328 doc
: /* Alist of system-specific X windows key symbols.
11329 Each element should have the form (N . SYMBOL) where N is the
11330 numeric keysym code (sans the \"system-specific\" bit 1<<28)
11331 and SYMBOL is its name. */);
11333 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
11334 doc
: /* List of deferred actions to be performed at a later time.
11335 The precise format isn't relevant here; we just check whether it is nil. */);
11336 Vdeferred_action_list
= Qnil
;
11338 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
11339 doc
: /* Function to call to handle deferred actions, after each command.
11340 This function is called with no arguments after each command
11341 whenever `deferred-action-list' is non-nil. */);
11342 Vdeferred_action_function
= Qnil
;
11344 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
11345 doc
: /* *Non-nil means show the equivalent key-binding when M-x command has one.
11346 The value can be a length of time to show the message for.
11347 If the value is non-nil and not a number, we wait 2 seconds. */);
11348 Vsuggest_key_bindings
= Qt
;
11350 DEFVAR_LISP ("timer-list", &Vtimer_list
,
11351 doc
: /* List of active absolute time timers in order of increasing time. */);
11352 Vtimer_list
= Qnil
;
11354 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
11355 doc
: /* List of active idle-time timers in order of increasing time. */);
11356 Vtimer_idle_list
= Qnil
;
11358 DEFVAR_LISP ("input-method-function", &Vinput_method_function
,
11359 doc
: /* If non-nil, the function that implements the current input method.
11360 It's called with one argument, a printing character that was just read.
11361 \(That means a character with code 040...0176.)
11362 Typically this function uses `read-event' to read additional events.
11363 When it does so, it should first bind `input-method-function' to nil
11364 so it will not be called recursively.
11366 The function should return a list of zero or more events
11367 to be used as input. If it wants to put back some events
11368 to be reconsidered, separately, by the input method,
11369 it can add them to the beginning of `unread-command-events'.
11371 The input method function can find in `input-method-previous-method'
11372 the previous echo area message.
11374 The input method function should refer to the variables
11375 `input-method-use-echo-area' and `input-method-exit-on-first-char'
11376 for guidance on what to do. */);
11377 Vinput_method_function
= Qnil
;
11379 DEFVAR_LISP ("input-method-previous-message",
11380 &Vinput_method_previous_message
,
11381 doc
: /* When `input-method-function' is called, hold the previous echo area message.
11382 This variable exists because `read-event' clears the echo area
11383 before running the input method. It is nil if there was no message. */);
11384 Vinput_method_previous_message
= Qnil
;
11386 DEFVAR_LISP ("show-help-function", &Vshow_help_function
,
11387 doc
: /* If non-nil, the function that implements the display of help.
11388 It's called with one argument, the help string to display. */);
11389 Vshow_help_function
= Qnil
;
11391 DEFVAR_LISP ("disable-point-adjustment", &Vdisable_point_adjustment
,
11392 doc
: /* If non-nil, suppress point adjustment after executing a command.
11394 After a command is executed, if point is moved into a region that has
11395 special properties (e.g. composition, display), we adjust point to
11396 the boundary of the region. But, when a command sets this variable to
11397 non-nil, we suppress the point adjustment.
11399 This variable is set to nil before reading a command, and is checked
11400 just after executing the command. */);
11401 Vdisable_point_adjustment
= Qnil
;
11403 DEFVAR_LISP ("global-disable-point-adjustment",
11404 &Vglobal_disable_point_adjustment
,
11405 doc
: /* *If non-nil, always suppress point adjustment.
11407 The default value is nil, in which case, point adjustment are
11408 suppressed only after special commands that set
11409 `disable-point-adjustment' (which see) to non-nil. */);
11410 Vglobal_disable_point_adjustment
= Qnil
;
11412 DEFVAR_LISP ("minibuffer-message-timeout", &Vminibuffer_message_timeout
,
11413 doc
: /* *How long to display an echo-area message when the minibuffer is active.
11414 If the value is not a number, such messages don't time out. */);
11415 Vminibuffer_message_timeout
= make_number (2);
11417 DEFVAR_LISP ("throw-on-input", &Vthrow_on_input
,
11418 doc
: /* If non-nil, any keyboard input throws to this symbol.
11419 The value of that variable is passed to `quit-flag' and later causes a
11420 peculiar kind of quitting. */);
11421 Vthrow_on_input
= Qnil
;
11425 keys_of_keyboard ()
11427 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
11428 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
11429 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
11430 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
11431 initial_define_key (meta_map
, 'x', "execute-extended-command");
11433 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
11434 "handle-delete-frame");
11435 /* Here we used to use `ignore-event' which would simple set prefix-arg to
11436 current-prefix-arg, as is done in `handle-switch-frame'.
11437 But `handle-switch-frame is not run from the special-map.
11438 Commands from that map are run in a special way that automatically
11439 preserves the prefix-arg. Restoring the prefix arg here is not just
11440 redundant but harmful:
11442 - current-prefix-arg is set to non-nil, prefix-arg is set to nil.
11443 - after the first prompt, the exit-minibuffer-hook is run which may
11444 iconify a frame and thus push a `iconify-frame' event.
11445 - after running exit-minibuffer-hook, current-prefix-arg is
11446 restored to the non-nil value it had before the prompt.
11447 - we enter the second prompt.
11448 current-prefix-arg is non-nil, prefix-arg is nil.
11449 - before running the first real event, we run the special iconify-frame
11450 event, but we pass the `special' arg to execute-command so
11451 current-prefix-arg and prefix-arg are left untouched.
11452 - here we foolishly copy the non-nil current-prefix-arg to prefix-arg.
11453 - the next key event will have a spuriously non-nil current-prefix-arg. */
11454 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
11456 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",
11458 /* Handling it at such a low-level causes read_key_sequence to get
11459 * confused because it doesn't realize that the current_buffer was
11460 * changed by read_char.
11462 * initial_define_lispy_key (Vspecial_event_map, "select-window",
11463 * "handle-select-window"); */
11464 initial_define_lispy_key (Vspecial_event_map
, "save-session",
11465 "handle-save-session");
11468 /* Mark the pointers in the kboard objects.
11469 Called by the Fgarbage_collector. */
11475 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
11477 if (kb
->kbd_macro_buffer
)
11478 for (p
= kb
->kbd_macro_buffer
; p
< kb
->kbd_macro_ptr
; p
++)
11480 mark_object (kb
->Voverriding_terminal_local_map
);
11481 mark_object (kb
->Vlast_command
);
11482 mark_object (kb
->Vreal_last_command
);
11483 mark_object (kb
->Vprefix_arg
);
11484 mark_object (kb
->Vlast_prefix_arg
);
11485 mark_object (kb
->kbd_queue
);
11486 mark_object (kb
->defining_kbd_macro
);
11487 mark_object (kb
->Vlast_kbd_macro
);
11488 mark_object (kb
->Vsystem_key_alist
);
11489 mark_object (kb
->system_key_syms
);
11490 mark_object (kb
->Vdefault_minibuffer_frame
);
11491 mark_object (kb
->echo_string
);
11494 struct input_event
*event
;
11495 for (event
= kbd_fetch_ptr
; event
!= kbd_store_ptr
; event
++)
11497 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
11498 event
= kbd_buffer
;
11499 if (event
->kind
!= SELECTION_REQUEST_EVENT
11500 && event
->kind
!= SELECTION_CLEAR_EVENT
)
11502 mark_object (event
->x
);
11503 mark_object (event
->y
);
11505 mark_object (event
->frame_or_window
);
11506 mark_object (event
->arg
);
11511 /* arch-tag: 774e34d7-6d31-42f3-8397-e079a4e4c9ca
11512 (do not change this comment) */