1 /* Keyboard and mouse input; editor command loop.
2 Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, 1996, 1997,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
28 #include "termhooks.h"
35 #include "character.h"
37 #include "dispextern.h"
39 #include "intervals.h"
41 #include "blockinput.h"
48 #ifdef HAVE_GTK_AND_PTHREAD
56 #include <sys/ioctl.h>
58 #endif /* not MSDOS */
60 #include "syssignal.h"
63 #include <sys/types.h>
72 /* This is to get the definitions of the XK_ symbols. */
79 #endif /* HAVE_NTGUI */
89 /* Variables for blockinput.h: */
91 /* Non-zero if interrupt input is blocked right now. */
92 int interrupt_input_blocked
;
94 /* Nonzero means an input interrupt has arrived
95 during the current critical section. */
96 int interrupt_input_pending
;
99 /* File descriptor to use for input. */
102 #ifdef HAVE_WINDOW_SYSTEM
103 /* Make all keyboard buffers much bigger when using X windows. */
105 /* But not too big (local data > 32K error) if on Mac OS Classic. */
106 #define KBD_BUFFER_SIZE 512
108 #define KBD_BUFFER_SIZE 4096
110 #else /* No X-windows, character input */
111 #define KBD_BUFFER_SIZE 4096
112 #endif /* No X-windows */
114 #define abs(x) ((x) >= 0 ? (x) : -(x))
116 /* Following definition copied from eval.c */
120 struct backtrace
*next
;
121 Lisp_Object
*function
;
122 Lisp_Object
*args
; /* Points to vector of args. */
123 int nargs
; /* length of vector. If nargs is UNEVALLED,
124 args points to slot holding list of
127 /* Nonzero means call value of debugger when done with this operation. */
132 KBOARD
*initial_kboard
;
133 KBOARD
*current_kboard
;
137 KBOARD the_only_kboard
;
140 /* Non-nil disable property on a command means
141 do not execute it; call disabled-command-function's value instead. */
142 Lisp_Object Qdisabled
, Qdisabled_command_function
;
144 #define NUM_RECENT_KEYS (100)
145 int recent_keys_index
; /* Index for storing next element into recent_keys */
146 int total_keys
; /* Total number of elements stored into recent_keys */
147 Lisp_Object recent_keys
; /* A vector, holding the last 100 keystrokes */
149 /* Vector holding the key sequence that invoked the current command.
150 It is reused for each command, and it may be longer than the current
151 sequence; this_command_key_count indicates how many elements
152 actually mean something.
153 It's easier to staticpro a single Lisp_Object than an array. */
154 Lisp_Object this_command_keys
;
155 int this_command_key_count
;
157 /* 1 after calling Freset_this_command_lengths.
159 int this_command_key_count_reset
;
161 /* This vector is used as a buffer to record the events that were actually read
162 by read_key_sequence. */
163 Lisp_Object raw_keybuf
;
164 int raw_keybuf_count
;
166 #define GROW_RAW_KEYBUF \
167 if (raw_keybuf_count == XVECTOR (raw_keybuf)->size) \
169 int newsize = 2 * XVECTOR (raw_keybuf)->size; \
171 new = Fmake_vector (make_number (newsize), Qnil); \
172 bcopy (XVECTOR (raw_keybuf)->contents, XVECTOR (new)->contents, \
173 raw_keybuf_count * sizeof (Lisp_Object)); \
177 /* Number of elements of this_command_keys
178 that precede this key sequence. */
179 int this_single_command_key_start
;
181 /* Record values of this_command_key_count and echo_length ()
182 before this command was read. */
183 static int before_command_key_count
;
184 static int before_command_echo_length
;
186 extern int minbuf_level
;
188 extern int message_enable_multibyte
;
190 extern struct backtrace
*backtrace_list
;
192 /* If non-nil, the function that implements the display of help.
193 It's called with one argument, the help string to display. */
195 Lisp_Object Vshow_help_function
;
197 /* If a string, the message displayed before displaying a help-echo
200 Lisp_Object Vpre_help_message
;
202 /* Nonzero means do menu prompting. */
204 static int menu_prompting
;
206 /* Character to see next line of menu prompt. */
208 static Lisp_Object menu_prompt_more_char
;
210 /* For longjmp to where kbd input is being done. */
212 static jmp_buf getcjmp
;
214 /* True while doing kbd input. */
215 int waiting_for_input
;
217 /* True while displaying for echoing. Delays C-g throwing. */
221 /* Non-null means we can start echoing at the next input pause even
222 though there is something in the echo area. */
224 static struct kboard
*ok_to_echo_at_next_pause
;
226 /* The kboard last echoing, or null for none. Reset to 0 in
227 cancel_echoing. If non-null, and a current echo area message
228 exists, and echo_message_buffer is eq to the current message
229 buffer, we know that the message comes from echo_kboard. */
231 struct kboard
*echo_kboard
;
233 /* The buffer used for echoing. Set in echo_now, reset in
236 Lisp_Object echo_message_buffer
;
238 /* Nonzero means disregard local maps for the menu bar. */
239 static int inhibit_local_menu_bar_menus
;
241 /* Nonzero means C-g should cause immediate error-signal. */
244 /* The user's ERASE setting. */
245 Lisp_Object Vtty_erase_char
;
247 /* Character to recognize as the help char. */
248 Lisp_Object Vhelp_char
;
250 /* List of other event types to recognize as meaning "help". */
251 Lisp_Object Vhelp_event_list
;
253 /* Form to execute when help char is typed. */
254 Lisp_Object Vhelp_form
;
256 /* Command to run when the help character follows a prefix key. */
257 Lisp_Object Vprefix_help_command
;
259 /* List of items that should move to the end of the menu bar. */
260 Lisp_Object Vmenu_bar_final_items
;
262 /* Non-nil means show the equivalent key-binding for
263 any M-x command that has one.
264 The value can be a length of time to show the message for.
265 If the value is non-nil and not a number, we wait 2 seconds. */
266 Lisp_Object Vsuggest_key_bindings
;
268 /* How long to display an echo-area message when the minibuffer is active.
269 If the value is not a number, such messages don't time out. */
270 Lisp_Object Vminibuffer_message_timeout
;
272 /* Character that causes a quit. Normally C-g.
274 If we are running on an ordinary terminal, this must be an ordinary
275 ASCII char, since we want to make it our interrupt character.
277 If we are not running on an ordinary terminal, it still needs to be
278 an ordinary ASCII char. This character needs to be recognized in
279 the input interrupt handler. At this point, the keystroke is
280 represented as a struct input_event, while the desired quit
281 character is specified as a lispy event. The mapping from struct
282 input_events to lispy events cannot run in an interrupt handler,
283 and the reverse mapping is difficult for anything but ASCII
286 FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an
290 extern Lisp_Object current_global_map
;
291 extern int minibuf_level
;
293 /* If non-nil, this is a map that overrides all other local maps. */
294 Lisp_Object Voverriding_local_map
;
296 /* If non-nil, Voverriding_local_map applies to the menu bar. */
297 Lisp_Object Voverriding_local_map_menu_flag
;
299 /* Keymap that defines special misc events that should
300 be processed immediately at a low level. */
301 Lisp_Object Vspecial_event_map
;
303 /* Current depth in recursive edits. */
304 int command_loop_level
;
306 /* Total number of times command_loop has read a key sequence. */
307 EMACS_INT num_input_keys
;
309 /* Last input character read as a command. */
310 Lisp_Object last_command_char
;
312 /* Last input character read as a command, not counting menus
313 reached by the mouse. */
314 Lisp_Object last_nonmenu_event
;
316 /* Last input character read for any purpose. */
317 Lisp_Object last_input_char
;
319 /* If not Qnil, a list of objects to be read as subsequent command input. */
320 Lisp_Object Vunread_command_events
;
322 /* If not Qnil, a list of objects to be read as subsequent command input
323 including input method processing. */
324 Lisp_Object Vunread_input_method_events
;
326 /* If not Qnil, a list of objects to be read as subsequent command input
327 but NOT including input method processing. */
328 Lisp_Object Vunread_post_input_method_events
;
330 /* If not -1, an event to be read as subsequent command input. */
331 EMACS_INT unread_command_char
;
333 /* If not Qnil, this is a switch-frame event which we decided to put
334 off until the end of a key sequence. This should be read as the
335 next command input, after any unread_command_events.
337 read_key_sequence uses this to delay switch-frame events until the
338 end of the key sequence; Fread_char uses it to put off switch-frame
339 events until a non-ASCII event is acceptable as input. */
340 Lisp_Object unread_switch_frame
;
342 /* A mask of extra modifier bits to put into every keyboard char. */
343 EMACS_INT extra_keyboard_modifiers
;
345 /* Char to use as prefix when a meta character is typed in.
346 This is bound on entry to minibuffer in case ESC is changed there. */
348 Lisp_Object meta_prefix_char
;
350 /* Last size recorded for a current buffer which is not a minibuffer. */
351 static int last_non_minibuf_size
;
353 /* Number of idle seconds before an auto-save and garbage collection. */
354 static Lisp_Object Vauto_save_timeout
;
356 /* Total number of times read_char has returned. */
357 int num_input_events
;
359 /* Total number of times read_char has returned, outside of macros. */
360 EMACS_INT num_nonmacro_input_events
;
362 /* Auto-save automatically when this many characters have been typed
363 since the last time. */
365 static EMACS_INT auto_save_interval
;
367 /* Value of num_nonmacro_input_events as of last auto save. */
371 /* The command being executed by the command loop.
372 Commands may set this, and the value set will be copied into
373 current_kboard->Vlast_command instead of the actual command. */
374 Lisp_Object Vthis_command
;
376 /* This is like Vthis_command, except that commands never set it. */
377 Lisp_Object real_this_command
;
379 /* If the lookup of the command returns a binding, the original
380 command is stored in this-original-command. It is nil otherwise. */
381 Lisp_Object Vthis_original_command
;
383 /* The value of point when the last command was executed. */
384 int last_point_position
;
386 /* The buffer that was current when the last command was started. */
387 Lisp_Object last_point_position_buffer
;
389 /* The frame in which the last input event occurred, or Qmacro if the
390 last event came from a macro. We use this to determine when to
391 generate switch-frame events. This may be cleared by functions
392 like Fselect_frame, to make sure that a switch-frame event is
393 generated by the next character. */
394 Lisp_Object internal_last_event_frame
;
396 /* A user-visible version of the above, intended to allow users to
397 figure out where the last event came from, if the event doesn't
398 carry that information itself (i.e. if it was a character). */
399 Lisp_Object Vlast_event_frame
;
401 /* The timestamp of the last input event we received from the X server.
402 X Windows wants this for selection ownership. */
403 unsigned long last_event_timestamp
;
405 Lisp_Object Qself_insert_command
;
406 Lisp_Object Qforward_char
;
407 Lisp_Object Qbackward_char
;
408 Lisp_Object Qundefined
;
409 Lisp_Object Qtimer_event_handler
;
411 /* read_key_sequence stores here the command definition of the
412 key sequence that it reads. */
413 Lisp_Object read_key_sequence_cmd
;
415 /* Echo unfinished commands after this many seconds of pause. */
416 Lisp_Object Vecho_keystrokes
;
418 /* Form to evaluate (if non-nil) when Emacs is started. */
419 Lisp_Object Vtop_level
;
421 /* User-supplied table to translate input characters. */
422 Lisp_Object Vkeyboard_translate_table
;
424 /* Keymap mapping ASCII function key sequences onto their preferred forms. */
425 extern Lisp_Object Vfunction_key_map
;
427 /* Another keymap that maps key sequences into key sequences.
428 This one takes precedence over ordinary definitions. */
429 extern Lisp_Object Vkey_translation_map
;
431 /* If non-nil, this implements the current input method. */
432 Lisp_Object Vinput_method_function
;
433 Lisp_Object Qinput_method_function
;
435 /* When we call Vinput_method_function,
436 this holds the echo area message that was just erased. */
437 Lisp_Object Vinput_method_previous_message
;
439 /* Non-nil means deactivate the mark at end of this command. */
440 Lisp_Object Vdeactivate_mark
;
442 /* Menu bar specified in Lucid Emacs fashion. */
444 Lisp_Object Vlucid_menu_bar_dirty_flag
;
445 Lisp_Object Qrecompute_lucid_menubar
, Qactivate_menubar_hook
;
447 Lisp_Object Qecho_area_clear_hook
;
449 /* Hooks to run before and after each command. */
450 Lisp_Object Qpre_command_hook
, Vpre_command_hook
;
451 Lisp_Object Qpost_command_hook
, Vpost_command_hook
;
452 Lisp_Object Qcommand_hook_internal
, Vcommand_hook_internal
;
454 /* List of deferred actions to be performed at a later time.
455 The precise format isn't relevant here; we just check whether it is nil. */
456 Lisp_Object Vdeferred_action_list
;
458 /* Function to call to handle deferred actions, when there are any. */
459 Lisp_Object Vdeferred_action_function
;
460 Lisp_Object Qdeferred_action_function
;
462 Lisp_Object Qinput_method_exit_on_first_char
;
463 Lisp_Object Qinput_method_use_echo_area
;
465 /* File in which we write all commands we read. */
468 /* Nonzero if input is available. */
471 /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
472 keep 0200 bit in input chars. 0 to ignore the 0200 bit. */
476 /* Non-zero means force key bindings update in parse_menu_item. */
478 int update_menu_bindings
;
480 extern char *pending_malloc_warning
;
482 /* Circular buffer for pre-read keyboard input. */
484 static struct input_event kbd_buffer
[KBD_BUFFER_SIZE
];
486 /* Pointer to next available character in kbd_buffer.
487 If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
488 This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the
489 next available char is in kbd_buffer[0]. */
490 static struct input_event
*kbd_fetch_ptr
;
492 /* Pointer to next place to store character in kbd_buffer. This
493 may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
494 character should go in kbd_buffer[0]. */
495 static struct input_event
* volatile kbd_store_ptr
;
497 /* The above pair of variables forms a "queue empty" flag. When we
498 enqueue a non-hook event, we increment kbd_store_ptr. When we
499 dequeue a non-hook event, we increment kbd_fetch_ptr. We say that
500 there is input available iff the two pointers are not equal.
502 Why not just have a flag set and cleared by the enqueuing and
503 dequeuing functions? Such a flag could be screwed up by interrupts
504 at inopportune times. */
506 /* If this flag is non-nil, we check mouse_moved to see when the
507 mouse moves, and motion events will appear in the input stream.
508 Otherwise, mouse motion is ignored. */
509 Lisp_Object do_mouse_tracking
;
511 /* Symbols to head events. */
512 Lisp_Object Qmouse_movement
;
513 Lisp_Object Qscroll_bar_movement
;
514 Lisp_Object Qswitch_frame
;
515 Lisp_Object Qdelete_frame
;
516 Lisp_Object Qiconify_frame
;
517 Lisp_Object Qmake_frame_visible
;
518 Lisp_Object Qselect_window
;
519 Lisp_Object Qhelp_echo
;
522 Lisp_Object Qmouse_fixup_help_message
;
525 /* Symbols to denote kinds of events. */
526 Lisp_Object Qfunction_key
;
527 Lisp_Object Qmouse_click
;
528 #if defined (WINDOWSNT) || defined (MAC_OS)
529 Lisp_Object Qlanguage_change
;
531 Lisp_Object Qdrag_n_drop
;
532 Lisp_Object Qsave_session
;
534 /* Lisp_Object Qmouse_movement; - also an event header */
536 /* Properties of event headers. */
537 Lisp_Object Qevent_kind
;
538 Lisp_Object Qevent_symbol_elements
;
540 /* menu item parts */
541 Lisp_Object Qmenu_alias
;
542 Lisp_Object Qmenu_enable
;
543 Lisp_Object QCenable
, QCvisible
, QChelp
, QCfilter
, QCkeys
, QCkey_sequence
;
544 Lisp_Object QCbutton
, QCtoggle
, QCradio
;
545 extern Lisp_Object Vdefine_key_rebound_commands
;
546 extern Lisp_Object Qmenu_item
;
548 /* An event header symbol HEAD may have a property named
549 Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
550 BASE is the base, unmodified version of HEAD, and MODIFIERS is the
551 mask of modifiers applied to it. If present, this is used to help
552 speed up parse_modifiers. */
553 Lisp_Object Qevent_symbol_element_mask
;
555 /* An unmodified event header BASE may have a property named
556 Qmodifier_cache, which is an alist mapping modifier masks onto
557 modified versions of BASE. If present, this helps speed up
559 Lisp_Object Qmodifier_cache
;
561 /* Symbols to use for parts of windows. */
562 Lisp_Object Qmode_line
;
563 Lisp_Object Qvertical_line
;
564 Lisp_Object Qvertical_scroll_bar
;
565 Lisp_Object Qmenu_bar
;
566 extern Lisp_Object Qleft_margin
, Qright_margin
;
567 extern Lisp_Object Qleft_fringe
, Qright_fringe
;
568 extern Lisp_Object QCmap
;
570 Lisp_Object
recursive_edit_unwind (), command_loop ();
571 Lisp_Object
Fthis_command_keys ();
572 Lisp_Object Qextended_command_history
;
573 EMACS_TIME
timer_check ();
575 extern Lisp_Object Vhistory_length
, Vtranslation_table_for_input
;
577 extern char *x_get_keysym_name ();
579 static void record_menu_key ();
580 static int echo_length ();
582 Lisp_Object Qpolling_period
;
584 /* List of absolute timers. Appears in order of next scheduled event. */
585 Lisp_Object Vtimer_list
;
587 /* List of idle time timers. Appears in order of next scheduled event. */
588 Lisp_Object Vtimer_idle_list
;
590 /* Incremented whenever a timer is run. */
593 extern Lisp_Object Vprint_level
, Vprint_length
;
595 /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt
597 EMACS_TIME
*input_available_clear_time
;
599 /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode.
600 Default is 1 if INTERRUPT_INPUT is defined. */
603 /* Nonzero while interrupts are temporarily deferred during redisplay. */
604 int interrupts_deferred
;
606 /* Nonzero means use ^S/^Q for flow control. */
609 /* Allow m- file to inhibit use of FIONREAD. */
610 #ifdef BROKEN_FIONREAD
614 /* We are unable to use interrupts if FIONREAD is not available,
615 so flush SIGIO so we won't try. */
616 #if !defined (FIONREAD)
622 /* If we support a window system, turn on the code to poll periodically
623 to detect C-g. It isn't actually used when doing interrupt input. */
624 #if defined(HAVE_WINDOW_SYSTEM) && !defined(USE_ASYNC_EVENTS)
625 #define POLL_FOR_INPUT
628 /* After a command is executed, if point is moved into a region that
629 has specific properties (e.g. composition, display), we adjust
630 point to the boundary of the region. But, if a command sets this
631 variable to non-nil, we suppress this point adjustment. This
632 variable is set to nil before reading a command. */
634 Lisp_Object Vdisable_point_adjustment
;
636 /* If non-nil, always disable point adjustment. */
638 Lisp_Object Vglobal_disable_point_adjustment
;
640 /* The time when Emacs started being idle. */
642 static EMACS_TIME timer_idleness_start_time
;
644 /* After Emacs stops being idle, this saves the last value
645 of timer_idleness_start_time from when it was idle. */
647 static EMACS_TIME timer_last_idleness_start_time
;
650 /* Global variable declarations. */
652 /* Flags for readable_events. */
653 #define READABLE_EVENTS_DO_TIMERS_NOW (1 << 0)
654 #define READABLE_EVENTS_FILTER_EVENTS (1 << 1)
655 #define READABLE_EVENTS_IGNORE_SQUEEZABLES (1 << 2)
657 /* Function for init_keyboard to call with no args (if nonzero). */
658 void (*keyboard_init_hook
) ();
660 static int read_avail_input
P_ ((int));
661 static void get_input_pending
P_ ((int *, int));
662 static int readable_events
P_ ((int));
663 static Lisp_Object read_char_x_menu_prompt
P_ ((int, Lisp_Object
*,
664 Lisp_Object
, int *));
665 static Lisp_Object
read_char_x_menu_prompt ();
666 static Lisp_Object read_char_minibuf_menu_prompt
P_ ((int, int,
668 static Lisp_Object make_lispy_event
P_ ((struct input_event
*));
670 static Lisp_Object make_lispy_movement
P_ ((struct frame
*, Lisp_Object
,
671 enum scroll_bar_part
,
672 Lisp_Object
, Lisp_Object
,
675 static Lisp_Object modify_event_symbol
P_ ((int, unsigned, Lisp_Object
,
676 Lisp_Object
, char **,
677 Lisp_Object
*, unsigned));
678 static Lisp_Object make_lispy_switch_frame
P_ ((Lisp_Object
));
679 static int parse_solitary_modifier
P_ ((Lisp_Object
));
680 static int parse_solitary_modifier ();
681 static void save_getcjmp
P_ ((jmp_buf));
682 static void save_getcjmp ();
683 static void restore_getcjmp
P_ ((jmp_buf));
684 static Lisp_Object apply_modifiers
P_ ((int, Lisp_Object
));
685 static void clear_event
P_ ((struct input_event
*));
686 static void any_kboard_state
P_ ((void));
687 static SIGTYPE interrupt_signal
P_ ((int signalnum
));
688 static void timer_start_idle
P_ ((void));
689 static void timer_stop_idle
P_ ((void));
690 static void timer_resume_idle
P_ ((void));
692 /* Nonzero means don't try to suspend even if the operating system seems
694 static int cannot_suspend
;
696 extern Lisp_Object Qidentity
, Qonly
;
698 /* Install the string STR as the beginning of the string of echoing,
699 so that it serves as a prompt for the next character.
700 Also start echoing. */
706 current_kboard
->echo_string
= str
;
707 current_kboard
->echo_after_prompt
= SCHARS (str
);
711 /* Add C to the echo string, if echoing is going on.
712 C can be a character, which is printed prettily ("M-C-x" and all that
713 jazz), or a symbol, whose name is printed. */
719 if (current_kboard
->immediate_echo
)
721 int size
= KEY_DESCRIPTION_SIZE
+ 100;
722 char *buffer
= (char *) alloca (size
);
724 Lisp_Object echo_string
;
726 echo_string
= current_kboard
->echo_string
;
728 /* If someone has passed us a composite event, use its head symbol. */
733 ptr
= push_key_description (XINT (c
), ptr
, 1);
735 else if (SYMBOLP (c
))
737 Lisp_Object name
= SYMBOL_NAME (c
);
738 int nbytes
= SBYTES (name
);
740 if (size
- (ptr
- buffer
) < nbytes
)
742 int offset
= ptr
- buffer
;
743 size
= max (2 * size
, size
+ nbytes
);
744 buffer
= (char *) alloca (size
);
745 ptr
= buffer
+ offset
;
748 ptr
+= copy_text (SDATA (name
), ptr
, nbytes
,
749 STRING_MULTIBYTE (name
), 1);
752 if ((NILP (echo_string
) || SCHARS (echo_string
) == 0)
755 const char *text
= " (Type ? for further options)";
756 int len
= strlen (text
);
758 if (size
- (ptr
- buffer
) < len
)
760 int offset
= ptr
- buffer
;
762 buffer
= (char *) alloca (size
);
763 ptr
= buffer
+ offset
;
766 bcopy (text
, ptr
, len
);
770 /* Replace a dash from echo_dash with a space, otherwise
771 add a space at the end as a separator between keys. */
772 if (STRINGP (echo_string
)
773 && SCHARS (echo_string
) > 1)
775 Lisp_Object last_char
, prev_char
, idx
;
777 idx
= make_number (SCHARS (echo_string
) - 2);
778 prev_char
= Faref (echo_string
, idx
);
780 idx
= make_number (SCHARS (echo_string
) - 1);
781 last_char
= Faref (echo_string
, idx
);
783 /* We test PREV_CHAR to make sure this isn't the echoing
785 if (XINT (last_char
) == '-' && XINT (prev_char
) != ' ')
786 Faset (echo_string
, idx
, make_number (' '));
788 echo_string
= concat2 (echo_string
, build_string (" "));
791 current_kboard
->echo_string
792 = concat2 (echo_string
, make_string (buffer
, ptr
- buffer
));
798 /* Temporarily add a dash to the end of the echo string if it's not
799 empty, so that it serves as a mini-prompt for the very next character. */
804 /* Do nothing if not echoing at all. */
805 if (NILP (current_kboard
->echo_string
))
808 if (!current_kboard
->immediate_echo
809 && SCHARS (current_kboard
->echo_string
) == 0)
812 /* Do nothing if we just printed a prompt. */
813 if (current_kboard
->echo_after_prompt
814 == SCHARS (current_kboard
->echo_string
))
817 /* Do nothing if we have already put a dash at the end. */
818 if (SCHARS (current_kboard
->echo_string
) > 1)
820 Lisp_Object last_char
, prev_char
, idx
;
822 idx
= make_number (SCHARS (current_kboard
->echo_string
) - 2);
823 prev_char
= Faref (current_kboard
->echo_string
, idx
);
825 idx
= make_number (SCHARS (current_kboard
->echo_string
) - 1);
826 last_char
= Faref (current_kboard
->echo_string
, idx
);
828 if (XINT (last_char
) == '-' && XINT (prev_char
) != ' ')
832 /* Put a dash at the end of the buffer temporarily,
833 but make it go away when the next character is added. */
834 current_kboard
->echo_string
= concat2 (current_kboard
->echo_string
,
839 /* Display the current echo string, and begin echoing if not already
845 if (!current_kboard
->immediate_echo
)
848 current_kboard
->immediate_echo
= 1;
850 for (i
= 0; i
< this_command_key_count
; i
++)
854 /* Set before_command_echo_length to the value that would
855 have been saved before the start of this subcommand in
856 command_loop_1, if we had already been echoing then. */
857 if (i
== this_single_command_key_start
)
858 before_command_echo_length
= echo_length ();
860 c
= XVECTOR (this_command_keys
)->contents
[i
];
861 if (! (EVENT_HAS_PARAMETERS (c
)
862 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
866 /* Set before_command_echo_length to the value that would
867 have been saved before the start of this subcommand in
868 command_loop_1, if we had already been echoing then. */
869 if (this_command_key_count
== this_single_command_key_start
)
870 before_command_echo_length
= echo_length ();
872 /* Put a dash at the end to invite the user to type more. */
877 message3_nolog (current_kboard
->echo_string
,
878 SBYTES (current_kboard
->echo_string
),
879 STRING_MULTIBYTE (current_kboard
->echo_string
));
882 /* Record in what buffer we echoed, and from which kboard. */
883 echo_message_buffer
= echo_area_buffer
[0];
884 echo_kboard
= current_kboard
;
886 if (waiting_for_input
&& !NILP (Vquit_flag
))
887 quit_throw_to_read_char ();
890 /* Turn off echoing, for the start of a new command. */
895 current_kboard
->immediate_echo
= 0;
896 current_kboard
->echo_after_prompt
= -1;
897 current_kboard
->echo_string
= Qnil
;
898 ok_to_echo_at_next_pause
= NULL
;
900 echo_message_buffer
= Qnil
;
903 /* Return the length of the current echo string. */
908 return (STRINGP (current_kboard
->echo_string
)
909 ? SCHARS (current_kboard
->echo_string
)
913 /* Truncate the current echo message to its first LEN chars.
914 This and echo_char get used by read_key_sequence when the user
915 switches frames while entering a key sequence. */
918 echo_truncate (nchars
)
921 if (STRINGP (current_kboard
->echo_string
))
922 current_kboard
->echo_string
923 = Fsubstring (current_kboard
->echo_string
,
924 make_number (0), make_number (nchars
));
925 truncate_echo_area (nchars
);
929 /* Functions for manipulating this_command_keys. */
931 add_command_key (key
)
934 #if 0 /* Not needed after we made Freset_this_command_lengths
935 do the job immediately. */
936 /* If reset-this-command-length was called recently, obey it now.
937 See the doc string of that function for an explanation of why. */
938 if (before_command_restore_flag
)
940 this_command_key_count
= before_command_key_count_1
;
941 if (this_command_key_count
< this_single_command_key_start
)
942 this_single_command_key_start
= this_command_key_count
;
943 echo_truncate (before_command_echo_length_1
);
944 before_command_restore_flag
= 0;
948 if (this_command_key_count
>= ASIZE (this_command_keys
))
949 this_command_keys
= larger_vector (this_command_keys
,
950 2 * ASIZE (this_command_keys
),
953 AREF (this_command_keys
, this_command_key_count
) = key
;
954 ++this_command_key_count
;
961 int count
= SPECPDL_INDEX ();
964 if (command_loop_level
> 0)
966 specbind (Qstandard_output
, Qt
);
967 specbind (Qstandard_input
, Qt
);
970 #ifdef HAVE_X_WINDOWS
971 /* The command loop has started an hourglass timer, so we have to
972 cancel it here, otherwise it will fire because the recursive edit
973 can take some time. Do not check for display_hourglass_p here,
974 because it could already be nil. */
978 /* This function may have been called from a debugger called from
979 within redisplay, for instance by Edebugging a function called
980 from fontification-functions. We want to allow redisplay in
981 the debugging session.
983 The recursive edit is left with a `(throw exit ...)'. The `exit'
984 tag is not caught anywhere in redisplay, i.e. when we leave the
985 recursive edit, the original redisplay leading to the recursive
986 edit will be unwound. The outcome should therefore be safe. */
987 specbind (Qinhibit_redisplay
, Qnil
);
990 val
= command_loop ();
992 Fsignal (Qquit
, Qnil
);
993 /* Handle throw from read_minibuf when using minibuffer
994 while it's active but we're in another window. */
996 Fsignal (Qerror
, Fcons (val
, Qnil
));
998 return unbind_to (count
, Qnil
);
1001 /* When an auto-save happens, record the "time", and don't do again soon. */
1006 last_auto_save
= num_nonmacro_input_events
;
1009 /* Make an auto save happen as soon as possible at command level. */
1012 force_auto_save_soon ()
1014 last_auto_save
= - auto_save_interval
- 1;
1016 record_asynch_buffer_change ();
1019 DEFUN ("recursive-edit", Frecursive_edit
, Srecursive_edit
, 0, 0, "",
1020 doc
: /* Invoke the editor command loop recursively.
1021 To get out of the recursive edit, a command can do `(throw 'exit nil)';
1022 that tells this function to return.
1023 Alternatively, `(throw 'exit t)' makes this function signal an error.
1024 This function is called by the editor initialization to begin editing. */)
1027 int count
= SPECPDL_INDEX ();
1030 /* If we enter while input is blocked, don't lock up here.
1031 This may happen through the debugger during redisplay. */
1032 if (INPUT_BLOCKED_P
)
1035 command_loop_level
++;
1036 update_mode_lines
= 1;
1038 if (command_loop_level
1039 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
1040 buffer
= Fcurrent_buffer ();
1044 /* If we leave recursive_edit_1 below with a `throw' for instance,
1045 like it is done in the splash screen display, we have to
1046 make sure that we restore single_kboard as command_loop_1
1047 would have done if it were left normally. */
1048 record_unwind_protect (recursive_edit_unwind
,
1049 Fcons (buffer
, single_kboard
? Qt
: Qnil
));
1051 recursive_edit_1 ();
1052 return unbind_to (count
, Qnil
);
1056 recursive_edit_unwind (info
)
1059 if (BUFFERP (XCAR (info
)))
1060 Fset_buffer (XCAR (info
));
1062 if (NILP (XCDR (info
)))
1063 any_kboard_state ();
1065 single_kboard_state ();
1067 command_loop_level
--;
1068 update_mode_lines
= 1;
1077 #if 0 /* Theory: if there's anything in Vunread_command_events,
1078 it will right away be read by read_key_sequence,
1079 and then if we do switch KBOARDS, it will go into the side
1080 queue then. So we don't need to do anything special here -- rms. */
1081 if (CONSP (Vunread_command_events
))
1083 current_kboard
->kbd_queue
1084 = nconc2 (Vunread_command_events
, current_kboard
->kbd_queue
);
1085 current_kboard
->kbd_queue_has_data
= 1;
1087 Vunread_command_events
= Qnil
;
1093 /* Switch to the single-kboard state, making current_kboard
1094 the only KBOARD from which further input is accepted. */
1097 single_kboard_state ()
1104 /* If we're in single_kboard state for kboard KBOARD,
1108 not_single_kboard_state (kboard
)
1112 if (kboard
== current_kboard
)
1117 /* Maintain a stack of kboards, so other parts of Emacs
1118 can switch temporarily to the kboard of a given frame
1119 and then revert to the previous status. */
1124 struct kboard_stack
*next
;
1127 static struct kboard_stack
*kboard_stack
;
1130 push_frame_kboard (f
)
1134 struct kboard_stack
*p
1135 = (struct kboard_stack
*) xmalloc (sizeof (struct kboard_stack
));
1137 p
->next
= kboard_stack
;
1138 p
->kboard
= current_kboard
;
1141 current_kboard
= FRAME_KBOARD (f
);
1149 struct kboard_stack
*p
= kboard_stack
;
1150 current_kboard
= p
->kboard
;
1151 kboard_stack
= p
->next
;
1156 /* Handle errors that are not handled at inner levels
1157 by printing an error message and returning to the editor command loop. */
1163 Lisp_Object old_level
, old_length
;
1164 char macroerror
[50];
1166 #ifdef HAVE_X_WINDOWS
1167 if (display_hourglass_p
)
1168 cancel_hourglass ();
1171 if (!NILP (executing_kbd_macro
))
1173 if (executing_kbd_macro_iterations
== 1)
1174 sprintf (macroerror
, "After 1 kbd macro iteration: ");
1176 sprintf (macroerror
, "After %d kbd macro iterations: ",
1177 executing_kbd_macro_iterations
);
1182 Vstandard_output
= Qt
;
1183 Vstandard_input
= Qt
;
1184 Vexecuting_kbd_macro
= Qnil
;
1185 executing_kbd_macro
= Qnil
;
1186 current_kboard
->Vprefix_arg
= Qnil
;
1187 current_kboard
->Vlast_prefix_arg
= Qnil
;
1190 /* Avoid unquittable loop if data contains a circular list. */
1191 old_level
= Vprint_level
;
1192 old_length
= Vprint_length
;
1193 XSETFASTINT (Vprint_level
, 10);
1194 XSETFASTINT (Vprint_length
, 10);
1195 cmd_error_internal (data
, macroerror
);
1196 Vprint_level
= old_level
;
1197 Vprint_length
= old_length
;
1201 Vinhibit_quit
= Qnil
;
1203 if (command_loop_level
== 0 && minibuf_level
== 0)
1204 any_kboard_state ();
1207 return make_number (0);
1210 /* Take actions on handling an error. DATA is the data that describes
1213 CONTEXT is a C-string containing ASCII characters only which
1214 describes the context in which the error happened. If we need to
1215 generalize CONTEXT to allow multibyte characters, make it a Lisp
1219 cmd_error_internal (data
, context
)
1224 int kill_emacs_p
= 0;
1225 struct frame
*sf
= SELECTED_FRAME ();
1229 clear_message (1, 0);
1231 /* If the window system or terminal frame hasn't been initialized
1232 yet, or we're not interactive, it's best to dump this message out
1233 to stderr and exit. */
1234 if (!sf
->glyphs_initialized_p
1235 /* This is the case of the frame dumped with Emacs, when we're
1236 running under a window system. */
1237 || (!NILP (Vwindow_system
)
1238 && !inhibit_window_system
1239 && FRAME_TERMCAP_P (sf
))
1242 stream
= Qexternal_debugging_output
;
1248 message_log_maybe_newline ();
1253 /* The immediate context is not interesting for Quits,
1254 since they are asyncronous. */
1255 if (EQ (XCAR (data
), Qquit
))
1256 Vsignaling_function
= Qnil
;
1258 print_error_message (data
, stream
, context
, Vsignaling_function
);
1260 Vsignaling_function
= Qnil
;
1262 /* If the window system or terminal frame hasn't been initialized
1263 yet, or we're in -batch mode, this error should cause Emacs to exit. */
1267 Fkill_emacs (make_number (-1));
1271 Lisp_Object
command_loop_1 ();
1272 Lisp_Object
command_loop_2 ();
1273 Lisp_Object
top_level_1 ();
1275 /* Entry to editor-command-loop.
1276 This level has the catches for exiting/returning to editor command loop.
1277 It returns nil to exit recursive edit, t to abort it. */
1282 if (command_loop_level
> 0 || minibuf_level
> 0)
1285 val
= internal_catch (Qexit
, command_loop_2
, Qnil
);
1286 executing_kbd_macro
= Qnil
;
1292 internal_catch (Qtop_level
, top_level_1
, Qnil
);
1293 /* Reset single_kboard in case top-level set it while
1294 evaluating an -f option, or we are stuck there for some
1296 any_kboard_state ();
1297 internal_catch (Qtop_level
, command_loop_2
, Qnil
);
1298 executing_kbd_macro
= Qnil
;
1300 /* End of file in -batch run causes exit here. */
1306 /* Here we catch errors in execution of commands within the
1307 editing loop, and reenter the editing loop.
1308 When there is an error, cmd_error runs and returns a non-nil
1309 value to us. A value of nil means that command_loop_1 itself
1310 returned due to end of file (or end of kbd macro). */
1315 register Lisp_Object val
;
1318 val
= internal_condition_case (command_loop_1
, Qerror
, cmd_error
);
1319 while (!NILP (val
));
1327 return Feval (Vtop_level
);
1333 /* On entry to the outer level, run the startup file */
1334 if (!NILP (Vtop_level
))
1335 internal_condition_case (top_level_2
, Qerror
, cmd_error
);
1336 else if (!NILP (Vpurify_flag
))
1337 message ("Bare impure Emacs (standard Lisp code not loaded)");
1339 message ("Bare Emacs (standard Lisp code not loaded)");
1343 DEFUN ("top-level", Ftop_level
, Stop_level
, 0, 0, "",
1344 doc
: /* Exit all recursive editing levels. */)
1347 #ifdef HAVE_X_WINDOWS
1348 if (display_hourglass_p
)
1349 cancel_hourglass ();
1352 /* Unblock input if we enter with input blocked. This may happen if
1353 redisplay traps e.g. during tool-bar update with input blocked. */
1354 while (INPUT_BLOCKED_P
)
1357 return Fthrow (Qtop_level
, Qnil
);
1360 DEFUN ("exit-recursive-edit", Fexit_recursive_edit
, Sexit_recursive_edit
, 0, 0, "",
1361 doc
: /* Exit from the innermost recursive edit or minibuffer. */)
1364 if (command_loop_level
> 0 || minibuf_level
> 0)
1365 Fthrow (Qexit
, Qnil
);
1367 error ("No recursive edit is in progress");
1371 DEFUN ("abort-recursive-edit", Fabort_recursive_edit
, Sabort_recursive_edit
, 0, 0, "",
1372 doc
: /* Abort the command that requested this recursive edit or minibuffer input. */)
1375 if (command_loop_level
> 0 || minibuf_level
> 0)
1378 error ("No recursive edit is in progress");
1382 /* This is the actual command reading loop,
1383 sans error-handling encapsulation. */
1385 static int read_key_sequence
P_ ((Lisp_Object
*, int, Lisp_Object
,
1387 void safe_run_hooks
P_ ((Lisp_Object
));
1388 static void adjust_point_for_property
P_ ((int, int));
1390 /* Cancel hourglass from protect_unwind.
1392 #ifdef HAVE_X_WINDOWS
1394 cancel_hourglass_unwind (arg
)
1397 cancel_hourglass ();
1408 Lisp_Object keybuf
[30];
1412 struct buffer
*prev_buffer
= NULL
;
1414 int was_locked
= single_kboard
;
1416 int already_adjusted
;
1418 current_kboard
->Vprefix_arg
= Qnil
;
1419 current_kboard
->Vlast_prefix_arg
= Qnil
;
1420 Vdeactivate_mark
= Qnil
;
1421 waiting_for_input
= 0;
1425 this_command_key_count
= 0;
1426 this_command_key_count_reset
= 0;
1427 this_single_command_key_start
= 0;
1429 if (NILP (Vmemory_full
))
1431 /* Make sure this hook runs after commands that get errors and
1432 throw to top level. */
1433 /* Note that the value cell will never directly contain nil
1434 if the symbol is a local variable. */
1435 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1436 safe_run_hooks (Qpost_command_hook
);
1438 /* If displaying a message, resize the echo area window to fit
1439 that message's size exactly. */
1440 if (!NILP (echo_area_buffer
[0]))
1441 resize_echo_area_exactly ();
1443 if (!NILP (Vdeferred_action_list
))
1444 safe_run_hooks (Qdeferred_action_function
);
1447 Vmemory_full
= Qnil
;
1449 /* Do this after running Vpost_command_hook, for consistency. */
1450 current_kboard
->Vlast_command
= Vthis_command
;
1451 current_kboard
->Vreal_last_command
= real_this_command
;
1455 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
1458 /* Make sure the current window's buffer is selected. */
1459 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1460 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1462 /* Display any malloc warning that just came out. Use while because
1463 displaying one warning can cause another. */
1465 while (pending_malloc_warning
)
1466 display_malloc_warning ();
1470 Vdeactivate_mark
= Qnil
;
1472 /* If minibuffer on and echo area in use,
1473 wait a short time and redraw minibuffer. */
1476 && !NILP (echo_area_buffer
[0])
1477 && EQ (minibuf_window
, echo_area_window
)
1478 && NUMBERP (Vminibuffer_message_timeout
))
1480 /* Bind inhibit-quit to t so that C-g gets read in
1481 rather than quitting back to the minibuffer. */
1482 int count
= SPECPDL_INDEX ();
1483 specbind (Qinhibit_quit
, Qt
);
1485 Fsit_for (Vminibuffer_message_timeout
, Qnil
, Qnil
);
1486 /* Clear the echo area. */
1488 safe_run_hooks (Qecho_area_clear_hook
);
1490 unbind_to (count
, Qnil
);
1492 /* If a C-g came in before, treat it as input now. */
1493 if (!NILP (Vquit_flag
))
1496 Vunread_command_events
= Fcons (make_number (quit_char
), Qnil
);
1501 alloca (0); /* Cause a garbage collection now */
1502 /* Since we can free the most stuff here. */
1503 #endif /* C_ALLOCA */
1506 /* Select the frame that the last event came from. Usually,
1507 switch-frame events will take care of this, but if some lisp
1508 code swallows a switch-frame event, we'll fix things up here.
1509 Is this a good idea? */
1510 if (FRAMEP (internal_last_event_frame
)
1511 && !EQ (internal_last_event_frame
, selected_frame
))
1512 Fselect_frame (internal_last_event_frame
);
1514 /* If it has changed current-menubar from previous value,
1515 really recompute the menubar from the value. */
1516 if (! NILP (Vlucid_menu_bar_dirty_flag
)
1517 && !NILP (Ffboundp (Qrecompute_lucid_menubar
)))
1518 call0 (Qrecompute_lucid_menubar
);
1520 before_command_key_count
= this_command_key_count
;
1521 before_command_echo_length
= echo_length ();
1523 Vthis_command
= Qnil
;
1524 real_this_command
= Qnil
;
1525 Vthis_original_command
= Qnil
;
1527 /* Read next key sequence; i gets its length. */
1528 i
= read_key_sequence (keybuf
, sizeof keybuf
/ sizeof keybuf
[0],
1531 /* A filter may have run while we were reading the input. */
1532 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
1534 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1535 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1539 /* Now we have read a key sequence of length I,
1540 or else I is 0 and we found end of file. */
1542 if (i
== 0) /* End of file -- happens only in */
1543 return Qnil
; /* a kbd macro, at the end. */
1544 /* -1 means read_key_sequence got a menu that was rejected.
1545 Just loop around and read another command. */
1549 this_command_key_count
= 0;
1550 this_command_key_count_reset
= 0;
1551 this_single_command_key_start
= 0;
1555 last_command_char
= keybuf
[i
- 1];
1557 /* If the previous command tried to force a specific window-start,
1558 forget about that, in case this command moves point far away
1559 from that position. But also throw away beg_unchanged and
1560 end_unchanged information in that case, so that redisplay will
1561 update the whole window properly. */
1562 if (!NILP (XWINDOW (selected_window
)->force_start
))
1565 XWINDOW (selected_window
)->force_start
= Qnil
;
1566 b
= XBUFFER (XWINDOW (selected_window
)->buffer
);
1567 BUF_BEG_UNCHANGED (b
) = BUF_END_UNCHANGED (b
) = 0;
1570 cmd
= read_key_sequence_cmd
;
1571 if (!NILP (Vexecuting_kbd_macro
))
1573 if (!NILP (Vquit_flag
))
1575 Vexecuting_kbd_macro
= Qt
;
1576 QUIT
; /* Make some noise. */
1577 /* Will return since macro now empty. */
1581 /* Do redisplay processing after this command except in special
1582 cases identified below. */
1583 prev_buffer
= current_buffer
;
1584 prev_modiff
= MODIFF
;
1585 last_point_position
= PT
;
1586 XSETBUFFER (last_point_position_buffer
, prev_buffer
);
1588 /* By default, we adjust point to a boundary of a region that
1589 has such a property that should be treated intangible
1590 (e.g. composition, display). But, some commands will set
1591 this variable differently. */
1592 Vdisable_point_adjustment
= Qnil
;
1594 /* Process filters and timers may have messed with deactivate-mark.
1595 reset it before we execute the command. */
1596 Vdeactivate_mark
= Qnil
;
1598 /* Remap command through active keymaps */
1599 Vthis_original_command
= cmd
;
1603 if (cmd1
= Fcommand_remapping (cmd
), !NILP (cmd1
))
1607 /* Execute the command. */
1609 Vthis_command
= cmd
;
1610 real_this_command
= cmd
;
1611 /* Note that the value cell will never directly contain nil
1612 if the symbol is a local variable. */
1613 if (!NILP (Vpre_command_hook
) && !NILP (Vrun_hooks
))
1614 safe_run_hooks (Qpre_command_hook
);
1616 already_adjusted
= 0;
1618 if (NILP (Vthis_command
))
1620 /* nil means key is undefined. */
1621 Lisp_Object keys
= Fvector (i
, keybuf
);
1622 keys
= Fkey_description (keys
, Qnil
);
1624 message_with_string ("%s is undefined", keys
, 0);
1625 current_kboard
->defining_kbd_macro
= Qnil
;
1626 update_mode_lines
= 1;
1627 current_kboard
->Vprefix_arg
= Qnil
;
1631 if (NILP (current_kboard
->Vprefix_arg
) && ! no_direct
)
1633 /* In case we jump to directly_done. */
1634 Vcurrent_prefix_arg
= current_kboard
->Vprefix_arg
;
1636 /* Recognize some common commands in common situations and
1637 do them directly. */
1638 if (EQ (Vthis_command
, Qforward_char
) && PT
< ZV
)
1640 struct Lisp_Char_Table
*dp
1641 = window_display_table (XWINDOW (selected_window
));
1642 lose
= FETCH_CHAR (PT_BYTE
);
1644 if (! NILP (Vpost_command_hook
))
1645 /* Put this before calling adjust_point_for_property
1646 so it will only get called once in any case. */
1648 if (current_buffer
== prev_buffer
1649 && last_point_position
!= PT
1650 && NILP (Vdisable_point_adjustment
)
1651 && NILP (Vglobal_disable_point_adjustment
))
1652 adjust_point_for_property (last_point_position
, 0);
1653 already_adjusted
= 1;
1654 if (PT
== last_point_position
+ 1
1656 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1657 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1658 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1659 && (lose
>= 0x20 && lose
< 0x7f)))
1660 : (lose
>= 0x20 && lose
< 0x7f))
1661 /* To extract the case of continuation on
1662 wide-column characters. */
1663 && ASCII_BYTE_P (lose
)
1664 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1666 && (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1668 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1670 && !windows_or_buffers_changed
1671 && EQ (current_buffer
->selective_display
, Qnil
)
1672 && !detect_input_pending ()
1673 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1674 && NILP (Vexecuting_kbd_macro
))
1675 direct_output_forward_char (1);
1678 else if (EQ (Vthis_command
, Qbackward_char
) && PT
> BEGV
)
1680 struct Lisp_Char_Table
*dp
1681 = window_display_table (XWINDOW (selected_window
));
1683 lose
= FETCH_CHAR (PT_BYTE
);
1684 if (! NILP (Vpost_command_hook
))
1686 if (current_buffer
== prev_buffer
1687 && last_point_position
!= PT
1688 && NILP (Vdisable_point_adjustment
)
1689 && NILP (Vglobal_disable_point_adjustment
))
1690 adjust_point_for_property (last_point_position
, 0);
1691 already_adjusted
= 1;
1692 if (PT
== last_point_position
- 1
1694 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1695 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1696 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1697 && (lose
>= 0x20 && lose
< 0x7f)))
1698 : (lose
>= 0x20 && lose
< 0x7f))
1699 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1701 && (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1703 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1705 && !windows_or_buffers_changed
1706 && EQ (current_buffer
->selective_display
, Qnil
)
1707 && !detect_input_pending ()
1708 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1709 && NILP (Vexecuting_kbd_macro
))
1710 direct_output_forward_char (-1);
1713 else if (EQ (Vthis_command
, Qself_insert_command
)
1714 /* Try this optimization only on char keystrokes. */
1715 && NATNUMP (last_command_char
)
1716 && CHAR_VALID_P (XFASTINT (last_command_char
), 0))
1719 = translate_char (Vtranslation_table_for_input
,
1720 XFASTINT (last_command_char
));
1722 if (NILP (Vexecuting_kbd_macro
)
1723 && !EQ (minibuf_window
, selected_window
))
1725 if (!nonundocount
|| nonundocount
>= 20)
1733 lose
= ((XFASTINT (XWINDOW (selected_window
)->last_modified
)
1735 || (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1737 || (XFASTINT (XWINDOW (selected_window
)->last_point
)
1739 || MODIFF
<= SAVE_MODIFF
1740 || windows_or_buffers_changed
1741 || !EQ (current_buffer
->selective_display
, Qnil
)
1742 || detect_input_pending ()
1743 || !NILP (XWINDOW (selected_window
)->column_number_displayed
)
1744 || !NILP (Vexecuting_kbd_macro
));
1746 value
= internal_self_insert (c
, 0);
1751 if (! NILP (Vpost_command_hook
))
1752 /* Put this before calling adjust_point_for_property
1753 so it will only get called once in any case. */
1756 /* VALUE == 1 when AFTER-CHANGE functions are
1757 installed which is the case most of the time
1758 because FONT-LOCK installs one. */
1759 if (!lose
&& !value
)
1760 direct_output_for_insert (c
);
1765 /* Here for a command that isn't executed directly */
1768 #ifdef HAVE_X_WINDOWS
1769 int scount
= SPECPDL_INDEX ();
1771 if (display_hourglass_p
1772 && NILP (Vexecuting_kbd_macro
))
1774 record_unwind_protect (cancel_hourglass_unwind
, Qnil
);
1780 if (NILP (current_kboard
->Vprefix_arg
))
1782 Fcommand_execute (Vthis_command
, Qnil
, Qnil
, Qnil
);
1784 #ifdef HAVE_X_WINDOWS
1785 /* Do not check display_hourglass_p here, because
1786 Fcommand_execute could change it, but we should cancel
1787 hourglass cursor anyway.
1788 But don't cancel the hourglass within a macro
1789 just because a command in the macro finishes. */
1790 if (NILP (Vexecuting_kbd_macro
))
1791 unbind_to (scount
, Qnil
);
1796 current_kboard
->Vlast_prefix_arg
= Vcurrent_prefix_arg
;
1798 /* Note that the value cell will never directly contain nil
1799 if the symbol is a local variable. */
1800 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1801 safe_run_hooks (Qpost_command_hook
);
1803 /* If displaying a message, resize the echo area window to fit
1804 that message's size exactly. */
1805 if (!NILP (echo_area_buffer
[0]))
1806 resize_echo_area_exactly ();
1808 if (!NILP (Vdeferred_action_list
))
1809 safe_run_hooks (Qdeferred_action_function
);
1811 /* If there is a prefix argument,
1812 1) We don't want Vlast_command to be ``universal-argument''
1813 (that would be dumb), so don't set Vlast_command,
1814 2) we want to leave echoing on so that the prefix will be
1815 echoed as part of this key sequence, so don't call
1817 3) we want to leave this_command_key_count non-zero, so that
1818 read_char will realize that it is re-reading a character, and
1819 not echo it a second time.
1821 If the command didn't actually create a prefix arg,
1822 but is merely a frame event that is transparent to prefix args,
1823 then the above doesn't apply. */
1824 if (NILP (current_kboard
->Vprefix_arg
) || CONSP (last_command_char
))
1826 current_kboard
->Vlast_command
= Vthis_command
;
1827 current_kboard
->Vreal_last_command
= real_this_command
;
1829 this_command_key_count
= 0;
1830 this_command_key_count_reset
= 0;
1831 this_single_command_key_start
= 0;
1834 if (!NILP (current_buffer
->mark_active
) && !NILP (Vrun_hooks
))
1836 /* Setting transient-mark-mode to `only' is a way of
1837 turning it on for just one command. */
1839 if (EQ (Vtransient_mark_mode
, Qidentity
))
1840 Vtransient_mark_mode
= Qnil
;
1841 if (EQ (Vtransient_mark_mode
, Qonly
))
1842 Vtransient_mark_mode
= Qidentity
;
1844 if (!NILP (Vdeactivate_mark
) && !NILP (Vtransient_mark_mode
))
1846 /* We could also call `deactivate'mark'. */
1847 if (EQ (Vtransient_mark_mode
, Qlambda
))
1848 Vtransient_mark_mode
= Qnil
;
1851 current_buffer
->mark_active
= Qnil
;
1852 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
1855 else if (current_buffer
!= prev_buffer
|| MODIFF
!= prev_modiff
)
1856 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
1861 if (current_buffer
== prev_buffer
1862 && last_point_position
!= PT
1863 && NILP (Vdisable_point_adjustment
)
1864 && NILP (Vglobal_disable_point_adjustment
)
1865 && !already_adjusted
)
1866 adjust_point_for_property (last_point_position
, MODIFF
!= prev_modiff
);
1868 /* Install chars successfully executed in kbd macro. */
1870 if (!NILP (current_kboard
->defining_kbd_macro
)
1871 && NILP (current_kboard
->Vprefix_arg
))
1872 finalize_kbd_macro_chars ();
1876 any_kboard_state ();
1881 extern Lisp_Object Qcomposition
, Qdisplay
;
1883 /* Adjust point to a boundary of a region that has such a property
1884 that should be treated intangible. For the moment, we check
1885 `composition', `display' and `invisible' properties.
1886 LAST_PT is the last position of point. */
1888 extern Lisp_Object Qafter_string
, Qbefore_string
;
1889 extern Lisp_Object get_pos_property
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
1892 adjust_point_for_property (last_pt
, modified
)
1897 Lisp_Object val
, overlay
, tmp
;
1898 int check_composition
= 1, check_display
= 1, check_invisible
= 1;
1901 /* FIXME: cycling is probably not necessary because these properties
1902 can't be usefully combined anyway. */
1903 while (check_composition
|| check_display
|| check_invisible
)
1905 if (check_composition
1906 && PT
> BEGV
&& PT
< ZV
1907 && get_property_and_range (PT
, Qcomposition
, &val
, &beg
, &end
, Qnil
)
1908 && COMPOSITION_VALID_P (beg
, end
, val
)
1909 && beg
< PT
/* && end > PT <- It's always the case. */
1910 && (last_pt
<= beg
|| last_pt
>= end
))
1913 SET_PT (PT
< last_pt
? beg
: end
);
1914 check_display
= check_invisible
= 1;
1916 check_composition
= 0;
1918 && PT
> BEGV
&& PT
< ZV
1919 && !NILP (val
= get_char_property_and_overlay
1920 (make_number (PT
), Qdisplay
, Qnil
, &overlay
))
1921 && display_prop_intangible_p (val
)
1922 && (!OVERLAYP (overlay
)
1923 ? get_property_and_range (PT
, Qdisplay
, &val
, &beg
, &end
, Qnil
)
1924 : (beg
= OVERLAY_POSITION (OVERLAY_START (overlay
)),
1925 end
= OVERLAY_POSITION (OVERLAY_END (overlay
))))
1926 && (beg
< PT
/* && end > PT <- It's always the case. */
1927 || (beg
<= PT
&& STRINGP (val
) && SCHARS (val
) == 0)))
1930 SET_PT (PT
< last_pt
1931 ? (STRINGP (val
) && SCHARS (val
) == 0 ? beg
- 1 : beg
)
1933 check_composition
= check_invisible
= 1;
1936 if (check_invisible
&& PT
> BEGV
&& PT
< ZV
)
1938 int inv
, ellipsis
= 0;
1941 /* Find boundaries `beg' and `end' of the invisible area, if any. */
1943 && !NILP (val
= get_char_property_and_overlay
1944 (make_number (end
), Qinvisible
, Qnil
, &overlay
))
1945 && (inv
= TEXT_PROP_MEANS_INVISIBLE (val
)))
1947 ellipsis
= ellipsis
|| inv
> 1
1948 || (OVERLAYP (overlay
)
1949 && (!NILP (Foverlay_get (overlay
, Qafter_string
))
1950 || !NILP (Foverlay_get (overlay
, Qbefore_string
))));
1951 tmp
= Fnext_single_char_property_change
1952 (make_number (end
), Qinvisible
, Qnil
, Qnil
);
1953 end
= NATNUMP (tmp
) ? XFASTINT (tmp
) : ZV
;
1956 && !NILP (val
= get_char_property_and_overlay
1957 (make_number (beg
- 1), Qinvisible
, Qnil
, &overlay
))
1958 && (inv
= TEXT_PROP_MEANS_INVISIBLE (val
)))
1960 ellipsis
= ellipsis
|| inv
> 1
1961 || (OVERLAYP (overlay
)
1962 && (!NILP (Foverlay_get (overlay
, Qafter_string
))
1963 || !NILP (Foverlay_get (overlay
, Qbefore_string
))));
1964 tmp
= Fprevious_single_char_property_change
1965 (make_number (beg
), Qinvisible
, Qnil
, Qnil
);
1966 beg
= NATNUMP (tmp
) ? XFASTINT (tmp
) : BEGV
;
1969 /* Move away from the inside area. */
1970 if (beg
< PT
&& end
> PT
)
1972 SET_PT ((orig_pt
== PT
&& (last_pt
< beg
|| last_pt
> end
))
1973 /* We haven't moved yet (so we don't need to fear
1974 infinite-looping) and we were outside the range
1975 before (so either end of the range still corresponds
1976 to a move in the right direction): pretend we moved
1977 less than we actually did, so that we still have
1978 more freedom below in choosing which end of the range
1980 ? (orig_pt
= -1, PT
< last_pt
? end
: beg
)
1981 /* We either have moved already or the last point
1982 was already in the range: we don't get to choose
1983 which end of the range we have to go to. */
1984 : (PT
< last_pt
? beg
: end
));
1985 check_composition
= check_display
= 1;
1987 #if 0 /* This assertion isn't correct, because SET_PT may end up setting
1988 the point to something other than its argument, due to
1989 point-motion hooks, intangibility, etc. */
1990 xassert (PT
== beg
|| PT
== end
);
1993 /* Pretend the area doesn't exist if the buffer is not
1995 if (!modified
&& !ellipsis
&& beg
< end
)
1997 if (last_pt
== beg
&& PT
== end
&& end
< ZV
)
1998 (check_composition
= check_display
= 1, SET_PT (end
+ 1));
1999 else if (last_pt
== end
&& PT
== beg
&& beg
> BEGV
)
2000 (check_composition
= check_display
= 1, SET_PT (beg
- 1));
2001 else if (PT
== ((PT
< last_pt
) ? beg
: end
))
2002 /* We've already moved as far as we can. Trying to go
2003 to the other end would mean moving backwards and thus
2004 could lead to an infinite loop. */
2006 else if (val
= get_pos_property (make_number (PT
),
2008 TEXT_PROP_MEANS_INVISIBLE (val
)
2009 && (val
= get_pos_property
2010 (make_number (PT
== beg
? end
: beg
),
2012 !TEXT_PROP_MEANS_INVISIBLE (val
)))
2013 (check_composition
= check_display
= 1,
2014 SET_PT (PT
== beg
? end
: beg
));
2017 check_invisible
= 0;
2021 /* Subroutine for safe_run_hooks: run the hook HOOK. */
2024 safe_run_hooks_1 (hook
)
2027 return call1 (Vrun_hooks
, Vinhibit_quit
);
2030 /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */
2033 safe_run_hooks_error (data
)
2036 Lisp_Object args
[3];
2037 args
[0] = build_string ("Error in %s: %s");
2038 args
[1] = Vinhibit_quit
;
2041 return Fset (Vinhibit_quit
, Qnil
);
2044 /* If we get an error while running the hook, cause the hook variable
2045 to be nil. Also inhibit quits, so that C-g won't cause the hook
2046 to mysteriously evaporate. */
2049 safe_run_hooks (hook
)
2052 int count
= SPECPDL_INDEX ();
2053 specbind (Qinhibit_quit
, hook
);
2055 internal_condition_case (safe_run_hooks_1
, Qt
, safe_run_hooks_error
);
2057 unbind_to (count
, Qnil
);
2061 /* Number of seconds between polling for input. This is a Lisp
2062 variable that can be bound. */
2064 EMACS_INT polling_period
;
2066 /* Nonzero means polling for input is temporarily suppressed. */
2068 int poll_suppress_count
;
2070 /* Asynchronous timer for polling. */
2072 struct atimer
*poll_timer
;
2075 #ifdef POLL_FOR_INPUT
2077 /* Poll for input, so what we catch a C-g if it comes in. This
2078 function is called from x_make_frame_visible, see comment
2084 if (interrupt_input_blocked
== 0
2085 && !waiting_for_input
)
2086 read_avail_input (0);
2089 /* Timer callback function for poll_timer. TIMER is equal to
2093 poll_for_input (timer
)
2094 struct atimer
*timer
;
2096 if (poll_suppress_count
== 0)
2098 interrupt_input_pending
= 1;
2100 poll_for_input_1 ();
2104 #endif /* POLL_FOR_INPUT */
2106 /* Begin signals to poll for input, if they are appropriate.
2107 This function is called unconditionally from various places. */
2112 #ifdef POLL_FOR_INPUT
2113 if (read_socket_hook
&& !interrupt_input
)
2115 /* Turn alarm handling on unconditionally. It might have
2116 been turned off in process.c. */
2117 turn_on_atimers (1);
2119 /* If poll timer doesn't exist, are we need one with
2120 a different interval, start a new one. */
2121 if (poll_timer
== NULL
2122 || EMACS_SECS (poll_timer
->interval
) != polling_period
)
2124 EMACS_TIME interval
;
2127 cancel_atimer (poll_timer
);
2129 EMACS_SET_SECS_USECS (interval
, polling_period
, 0);
2130 poll_timer
= start_atimer (ATIMER_CONTINUOUS
, interval
,
2131 poll_for_input
, NULL
);
2134 /* Let the timer's callback function poll for input
2135 if this becomes zero. */
2136 --poll_suppress_count
;
2141 /* Nonzero if we are using polling to handle input asynchronously. */
2144 input_polling_used ()
2146 #ifdef POLL_FOR_INPUT
2147 return read_socket_hook
&& !interrupt_input
;
2153 /* Turn off polling. */
2158 #ifdef POLL_FOR_INPUT
2159 if (read_socket_hook
&& !interrupt_input
)
2160 ++poll_suppress_count
;
2164 /* Set the value of poll_suppress_count to COUNT
2165 and start or stop polling accordingly. */
2168 set_poll_suppress_count (count
)
2171 #ifdef POLL_FOR_INPUT
2172 if (count
== 0 && poll_suppress_count
!= 0)
2174 poll_suppress_count
= 1;
2177 else if (count
!= 0 && poll_suppress_count
== 0)
2181 poll_suppress_count
= count
;
2185 /* Bind polling_period to a value at least N.
2186 But don't decrease it. */
2189 bind_polling_period (n
)
2192 #ifdef POLL_FOR_INPUT
2193 int new = polling_period
;
2198 stop_other_atimers (poll_timer
);
2200 specbind (Qpolling_period
, make_number (new));
2201 /* Start a new alarm with the new period. */
2206 /* Apply the control modifier to CHARACTER. */
2212 /* Save the upper bits here. */
2213 int upper
= c
& ~0177;
2217 /* Everything in the columns containing the upper-case letters
2218 denotes a control character. */
2219 if (c
>= 0100 && c
< 0140)
2223 /* Set the shift modifier for a control char
2224 made from a shifted letter. But only for letters! */
2225 if (oc
>= 'A' && oc
<= 'Z')
2226 c
|= shift_modifier
;
2229 /* The lower-case letters denote control characters too. */
2230 else if (c
>= 'a' && c
<= 'z')
2233 /* Include the bits for control and shift
2234 only if the basic ASCII code can't indicate them. */
2238 /* Replace the high bits. */
2239 c
|= (upper
& ~ctrl_modifier
);
2244 /* Display the help-echo property of the character after the mouse pointer.
2245 Either show it in the echo area, or call show-help-function to display
2246 it by other means (maybe in a tooltip).
2248 If HELP is nil, that means clear the previous help echo.
2250 If HELP is a string, display that string. If HELP is a function,
2251 call it with OBJECT and POS as arguments; the function should
2252 return a help string or nil for none. For all other types of HELP,
2253 evaluate it to obtain a string.
2255 WINDOW is the window in which the help was generated, if any.
2256 It is nil if not in a window.
2258 If OBJECT is a buffer, POS is the position in the buffer where the
2259 `help-echo' text property was found.
2261 If OBJECT is an overlay, that overlay has a `help-echo' property,
2262 and POS is the position in the overlay's buffer under the mouse.
2264 If OBJECT is a string (an overlay string or a string displayed with
2265 the `display' property). POS is the position in that string under
2268 OK_TO_OVERWRITE_KEYSTROKE_ECHO non-zero means it's okay if the help
2269 echo overwrites a keystroke echo currently displayed in the echo
2272 Note: this function may only be called with HELP nil or a string
2273 from X code running asynchronously. */
2276 show_help_echo (help
, window
, object
, pos
, ok_to_overwrite_keystroke_echo
)
2277 Lisp_Object help
, window
, object
, pos
;
2278 int ok_to_overwrite_keystroke_echo
;
2280 if (!NILP (help
) && !STRINGP (help
))
2282 if (FUNCTIONP (help
))
2284 Lisp_Object args
[4];
2289 help
= safe_call (4, args
);
2292 help
= safe_eval (help
);
2294 if (!STRINGP (help
))
2299 if (!noninteractive
&& STRINGP (help
))
2300 help
= call1 (Qmouse_fixup_help_message
, help
);
2303 if (STRINGP (help
) || NILP (help
))
2305 if (!NILP (Vshow_help_function
))
2306 call1 (Vshow_help_function
, help
);
2307 else if (/* Don't overwrite minibuffer contents. */
2308 !MINI_WINDOW_P (XWINDOW (selected_window
))
2309 /* Don't overwrite a keystroke echo. */
2310 && (NILP (echo_message_buffer
)
2311 || ok_to_overwrite_keystroke_echo
)
2312 /* Don't overwrite a prompt. */
2313 && !cursor_in_echo_area
)
2317 int count
= SPECPDL_INDEX ();
2319 if (!help_echo_showing_p
)
2320 Vpre_help_message
= current_message ();
2322 specbind (Qmessage_truncate_lines
, Qt
);
2323 message3_nolog (help
, SBYTES (help
),
2324 STRING_MULTIBYTE (help
));
2325 unbind_to (count
, Qnil
);
2327 else if (STRINGP (Vpre_help_message
))
2329 message3_nolog (Vpre_help_message
,
2330 SBYTES (Vpre_help_message
),
2331 STRING_MULTIBYTE (Vpre_help_message
));
2332 Vpre_help_message
= Qnil
;
2338 help_echo_showing_p
= STRINGP (help
);
2344 /* Input of single characters from keyboard */
2346 Lisp_Object
print_help ();
2347 static Lisp_Object
kbd_buffer_get_event ();
2348 static void record_char ();
2351 static jmp_buf wrong_kboard_jmpbuf
;
2354 #define STOP_POLLING \
2355 do { if (! polling_stopped_here) stop_polling (); \
2356 polling_stopped_here = 1; } while (0)
2358 #define RESUME_POLLING \
2359 do { if (polling_stopped_here) start_polling (); \
2360 polling_stopped_here = 0; } while (0)
2362 /* read a character from the keyboard; call the redisplay if needed */
2363 /* commandflag 0 means do not do auto-saving, but do do redisplay.
2364 -1 means do not do redisplay, but do do autosaving.
2367 /* The arguments MAPS and NMAPS are for menu prompting.
2368 MAPS is an array of keymaps; NMAPS is the length of MAPS.
2370 PREV_EVENT is the previous input event, or nil if we are reading
2371 the first event of a key sequence (or not reading a key sequence).
2372 If PREV_EVENT is t, that is a "magic" value that says
2373 not to run input methods, but in other respects to act as if
2374 not reading a key sequence.
2376 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
2377 if we used a mouse menu to read the input, or zero otherwise. If
2378 USED_MOUSE_MENU is null, we don't dereference it.
2380 Value is t if we showed a menu and the user rejected it. */
2383 read_char (commandflag
, nmaps
, maps
, prev_event
, used_mouse_menu
)
2387 Lisp_Object prev_event
;
2388 int *used_mouse_menu
;
2390 volatile Lisp_Object c
;
2392 jmp_buf local_getcjmp
;
2394 volatile int key_already_recorded
= 0;
2395 Lisp_Object tem
, save
;
2396 volatile Lisp_Object previous_echo_area_message
;
2397 volatile Lisp_Object also_record
;
2398 volatile int reread
;
2399 struct gcpro gcpro1
, gcpro2
;
2400 int polling_stopped_here
= 0;
2404 #if 0 /* This was commented out as part of fixing echo for C-u left. */
2405 before_command_key_count
= this_command_key_count
;
2406 before_command_echo_length
= echo_length ();
2409 previous_echo_area_message
= Qnil
;
2411 GCPRO2 (c
, previous_echo_area_message
);
2416 if (CONSP (Vunread_post_input_method_events
))
2418 c
= XCAR (Vunread_post_input_method_events
);
2419 Vunread_post_input_method_events
2420 = XCDR (Vunread_post_input_method_events
);
2422 /* Undo what read_char_x_menu_prompt did when it unread
2423 additional keys returned by Fx_popup_menu. */
2425 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
)))
2433 if (unread_command_char
!= -1)
2435 XSETINT (c
, unread_command_char
);
2436 unread_command_char
= -1;
2442 if (CONSP (Vunread_command_events
))
2444 c
= XCAR (Vunread_command_events
);
2445 Vunread_command_events
= XCDR (Vunread_command_events
);
2447 /* Undo what read_char_x_menu_prompt did when it unread
2448 additional keys returned by Fx_popup_menu. */
2450 && EQ (XCDR (c
), Qdisabled
)
2451 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
))))
2454 /* If the queued event is something that used the mouse,
2455 set used_mouse_menu accordingly. */
2457 && (EQ (c
, Qtool_bar
) || EQ (c
, Qmenu_bar
)))
2458 *used_mouse_menu
= 1;
2461 goto reread_for_input_method
;
2464 if (CONSP (Vunread_input_method_events
))
2466 c
= XCAR (Vunread_input_method_events
);
2467 Vunread_input_method_events
= XCDR (Vunread_input_method_events
);
2469 /* Undo what read_char_x_menu_prompt did when it unread
2470 additional keys returned by Fx_popup_menu. */
2472 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
)))
2476 goto reread_for_input_method
;
2479 this_command_key_count_reset
= 0;
2481 if (!NILP (Vexecuting_kbd_macro
))
2483 /* We set this to Qmacro; since that's not a frame, nobody will
2484 try to switch frames on us, and the selected window will
2487 Since this event came from a macro, it would be misleading to
2488 leave internal_last_event_frame set to wherever the last
2489 real event came from. Normally, a switch-frame event selects
2490 internal_last_event_frame after each command is read, but
2491 events read from a macro should never cause a new frame to be
2493 Vlast_event_frame
= internal_last_event_frame
= Qmacro
;
2495 /* Exit the macro if we are at the end.
2496 Also, some things replace the macro with t
2497 to force an early exit. */
2498 if (EQ (Vexecuting_kbd_macro
, Qt
)
2499 || executing_kbd_macro_index
>= XFASTINT (Flength (Vexecuting_kbd_macro
)))
2505 c
= Faref (Vexecuting_kbd_macro
, make_number (executing_kbd_macro_index
));
2506 if (STRINGP (Vexecuting_kbd_macro
)
2507 && (XINT (c
) & 0x80) && (XUINT (c
) <= 0xff))
2508 XSETFASTINT (c
, CHAR_META
| (XINT (c
) & ~0x80));
2510 executing_kbd_macro_index
++;
2515 if (!NILP (unread_switch_frame
))
2517 c
= unread_switch_frame
;
2518 unread_switch_frame
= Qnil
;
2520 /* This event should make it into this_command_keys, and get echoed
2521 again, so we do not set `reread'. */
2525 /* if redisplay was requested */
2526 if (commandflag
>= 0)
2528 /* If there is pending input, process any events which are not
2529 user-visible, such as X selection_request events. */
2531 || detect_input_pending_run_timers (0))
2532 swallow_events (0); /* may clear input_pending */
2534 /* Redisplay if no pending input. */
2535 while (!input_pending
)
2537 if (help_echo_showing_p
&& !EQ (selected_window
, minibuf_window
))
2538 redisplay_preserve_echo_area (5);
2543 /* Normal case: no input arrived during redisplay. */
2546 /* Input arrived and pre-empted redisplay.
2547 Process any events which are not user-visible. */
2549 /* If that cleared input_pending, try again to redisplay. */
2553 /* Message turns off echoing unless more keystrokes turn it on again.
2555 The code in 20.x for the condition was
2557 1. echo_area_glyphs && *echo_area_glyphs
2558 2. && echo_area_glyphs != current_kboard->echobuf
2559 3. && ok_to_echo_at_next_pause != echo_area_glyphs
2561 (1) means there's a current message displayed
2563 (2) means it's not the message from echoing from the current
2566 (3) There's only one place in 20.x where ok_to_echo_at_next_pause
2567 is set to a non-null value. This is done in read_char and it is
2568 set to echo_area_glyphs after a call to echo_char. That means
2569 ok_to_echo_at_next_pause is either null or
2570 current_kboard->echobuf with the appropriate current_kboard at
2573 So, condition (3) means in clear text ok_to_echo_at_next_pause
2574 must be either null, or the current message isn't from echoing at
2575 all, or it's from echoing from a different kboard than the
2578 if (/* There currently is something in the echo area. */
2579 !NILP (echo_area_buffer
[0])
2580 && (/* And it's either not from echoing. */
2581 !EQ (echo_area_buffer
[0], echo_message_buffer
)
2582 /* Or it's an echo from a different kboard. */
2583 || echo_kboard
!= current_kboard
2584 /* Or we explicitly allow overwriting whatever there is. */
2585 || ok_to_echo_at_next_pause
== NULL
))
2590 /* Try reading a character via menu prompting in the minibuf.
2591 Try this before the sit-for, because the sit-for
2592 would do the wrong thing if we are supposed to do
2593 menu prompting. If EVENT_HAS_PARAMETERS then we are reading
2594 after a mouse event so don't try a minibuf menu. */
2596 if (nmaps
> 0 && INTERACTIVE
2597 && !NILP (prev_event
) && ! EVENT_HAS_PARAMETERS (prev_event
)
2598 /* Don't bring up a menu if we already have another event. */
2599 && NILP (Vunread_command_events
)
2600 && unread_command_char
< 0
2601 && !detect_input_pending_run_timers (0))
2603 c
= read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
);
2606 key_already_recorded
= 1;
2611 /* Make a longjmp point for quits to use, but don't alter getcjmp just yet.
2612 We will do that below, temporarily for short sections of code,
2613 when appropriate. local_getcjmp must be in effect
2614 around any call to sit_for or kbd_buffer_get_event;
2615 it *must not* be in effect when we call redisplay. */
2617 if (_setjmp (local_getcjmp
))
2619 /* We must have saved the outer value of getcjmp here,
2620 so restore it now. */
2621 restore_getcjmp (save_jump
);
2622 XSETINT (c
, quit_char
);
2623 internal_last_event_frame
= selected_frame
;
2624 Vlast_event_frame
= internal_last_event_frame
;
2625 /* If we report the quit char as an event,
2626 don't do so more than once. */
2627 if (!NILP (Vinhibit_quit
))
2632 KBOARD
*kb
= FRAME_KBOARD (XFRAME (selected_frame
));
2633 if (kb
!= current_kboard
)
2635 Lisp_Object link
= kb
->kbd_queue
;
2636 /* We shouldn't get here if we were in single-kboard mode! */
2641 while (CONSP (XCDR (link
)))
2643 if (!NILP (XCDR (link
)))
2647 kb
->kbd_queue
= Fcons (c
, Qnil
);
2649 XSETCDR (link
, Fcons (c
, Qnil
));
2650 kb
->kbd_queue_has_data
= 1;
2651 current_kboard
= kb
;
2652 /* This is going to exit from read_char
2653 so we had better get rid of this frame's stuff. */
2655 longjmp (wrong_kboard_jmpbuf
, 1);
2662 timer_start_idle ();
2664 /* If in middle of key sequence and minibuffer not active,
2665 start echoing if enough time elapses. */
2667 if (minibuf_level
== 0
2668 && !current_kboard
->immediate_echo
2669 && this_command_key_count
> 0
2671 && (FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
2672 && NILP (Fzerop (Vecho_keystrokes
))
2673 && (/* No message. */
2674 NILP (echo_area_buffer
[0])
2675 /* Or empty message. */
2676 || (BUF_BEG (XBUFFER (echo_area_buffer
[0]))
2677 == BUF_Z (XBUFFER (echo_area_buffer
[0])))
2678 /* Or already echoing from same kboard. */
2679 || (echo_kboard
&& ok_to_echo_at_next_pause
== echo_kboard
)
2680 /* Or not echoing before and echoing allowed. */
2681 || (!echo_kboard
&& ok_to_echo_at_next_pause
)))
2685 /* After a mouse event, start echoing right away.
2686 This is because we are probably about to display a menu,
2687 and we don't want to delay before doing so. */
2688 if (EVENT_HAS_PARAMETERS (prev_event
))
2693 double duration
= extract_float (Vecho_keystrokes
);
2694 sec
= (int) duration
;
2695 usec
= (duration
- sec
) * 1000000;
2696 save_getcjmp (save_jump
);
2697 restore_getcjmp (local_getcjmp
);
2698 tem0
= sit_for (sec
, usec
, 1, 1, 0);
2699 restore_getcjmp (save_jump
);
2701 && ! CONSP (Vunread_command_events
))
2706 /* Maybe auto save due to number of keystrokes. */
2708 if (commandflag
!= 0
2709 && auto_save_interval
> 0
2710 && num_nonmacro_input_events
- last_auto_save
> max (auto_save_interval
, 20)
2711 && !detect_input_pending_run_timers (0))
2713 Fdo_auto_save (Qnil
, Qnil
);
2714 /* Hooks can actually change some buffers in auto save. */
2718 /* Try reading using an X menu.
2719 This is never confused with reading using the minibuf
2720 because the recursive call of read_char in read_char_minibuf_menu_prompt
2721 does not pass on any keymaps. */
2723 if (nmaps
> 0 && INTERACTIVE
2724 && !NILP (prev_event
)
2725 && EVENT_HAS_PARAMETERS (prev_event
)
2726 && !EQ (XCAR (prev_event
), Qmenu_bar
)
2727 && !EQ (XCAR (prev_event
), Qtool_bar
)
2728 /* Don't bring up a menu if we already have another event. */
2729 && NILP (Vunread_command_events
)
2730 && unread_command_char
< 0)
2732 c
= read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
);
2734 /* Now that we have read an event, Emacs is not idle. */
2740 /* Maybe autosave and/or garbage collect due to idleness. */
2742 if (INTERACTIVE
&& NILP (c
))
2744 int delay_level
, buffer_size
;
2746 /* Slow down auto saves logarithmically in size of current buffer,
2747 and garbage collect while we're at it. */
2748 if (! MINI_WINDOW_P (XWINDOW (selected_window
)))
2749 last_non_minibuf_size
= Z
- BEG
;
2750 buffer_size
= (last_non_minibuf_size
>> 8) + 1;
2752 while (buffer_size
> 64)
2753 delay_level
++, buffer_size
-= buffer_size
>> 2;
2754 if (delay_level
< 4) delay_level
= 4;
2755 /* delay_level is 4 for files under around 50k, 7 at 100k,
2756 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */
2758 /* Auto save if enough time goes by without input. */
2759 if (commandflag
!= 0
2760 && num_nonmacro_input_events
> last_auto_save
2761 && INTEGERP (Vauto_save_timeout
)
2762 && XINT (Vauto_save_timeout
) > 0)
2766 save_getcjmp (save_jump
);
2767 restore_getcjmp (local_getcjmp
);
2768 tem0
= sit_for (delay_level
* XFASTINT (Vauto_save_timeout
) / 4,
2770 restore_getcjmp (save_jump
);
2773 && ! CONSP (Vunread_command_events
))
2775 Fdo_auto_save (Qnil
, Qnil
);
2777 /* If we have auto-saved and there is still no input
2778 available, garbage collect if there has been enough
2779 consing going on to make it worthwhile. */
2780 if (!detect_input_pending_run_timers (0)
2781 && consing_since_gc
> gc_cons_threshold
/ 2)
2782 Fgarbage_collect ();
2789 /* If this has become non-nil here, it has been set by a timer
2790 or sentinel or filter. */
2791 if (CONSP (Vunread_command_events
))
2793 c
= XCAR (Vunread_command_events
);
2794 Vunread_command_events
= XCDR (Vunread_command_events
);
2797 /* Read something from current KBOARD's side queue, if possible. */
2801 if (current_kboard
->kbd_queue_has_data
)
2803 if (!CONSP (current_kboard
->kbd_queue
))
2805 c
= XCAR (current_kboard
->kbd_queue
);
2806 current_kboard
->kbd_queue
2807 = XCDR (current_kboard
->kbd_queue
);
2808 if (NILP (current_kboard
->kbd_queue
))
2809 current_kboard
->kbd_queue_has_data
= 0;
2810 input_pending
= readable_events (0);
2811 if (EVENT_HAS_PARAMETERS (c
)
2812 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qswitch_frame
))
2813 internal_last_event_frame
= XCAR (XCDR (c
));
2814 Vlast_event_frame
= internal_last_event_frame
;
2819 /* If current_kboard's side queue is empty check the other kboards.
2820 If one of them has data that we have not yet seen here,
2821 switch to it and process the data waiting for it.
2823 Note: if the events queued up for another kboard
2824 have already been seen here, and therefore are not a complete command,
2825 the kbd_queue_has_data field is 0, so we skip that kboard here.
2826 That's to avoid an infinite loop switching between kboards here. */
2827 if (NILP (c
) && !single_kboard
)
2830 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
2831 if (kb
->kbd_queue_has_data
)
2833 current_kboard
= kb
;
2834 /* This is going to exit from read_char
2835 so we had better get rid of this frame's stuff. */
2837 longjmp (wrong_kboard_jmpbuf
, 1);
2846 /* Finally, we read from the main queue,
2847 and if that gives us something we can't use yet, we put it on the
2848 appropriate side queue and try again. */
2854 /* Actually read a character, waiting if necessary. */
2855 save_getcjmp (save_jump
);
2856 restore_getcjmp (local_getcjmp
);
2857 timer_start_idle ();
2858 c
= kbd_buffer_get_event (&kb
, used_mouse_menu
);
2859 restore_getcjmp (save_jump
);
2862 if (! NILP (c
) && (kb
!= current_kboard
))
2864 Lisp_Object link
= kb
->kbd_queue
;
2867 while (CONSP (XCDR (link
)))
2869 if (!NILP (XCDR (link
)))
2873 kb
->kbd_queue
= Fcons (c
, Qnil
);
2875 XSETCDR (link
, Fcons (c
, Qnil
));
2876 kb
->kbd_queue_has_data
= 1;
2880 current_kboard
= kb
;
2881 /* This is going to exit from read_char
2882 so we had better get rid of this frame's stuff. */
2884 longjmp (wrong_kboard_jmpbuf
, 1);
2889 /* Terminate Emacs in batch mode if at eof. */
2890 if (noninteractive
&& INTEGERP (c
) && XINT (c
) < 0)
2891 Fkill_emacs (make_number (1));
2895 /* Add in any extra modifiers, where appropriate. */
2896 if ((extra_keyboard_modifiers
& CHAR_CTL
)
2897 || ((extra_keyboard_modifiers
& 0177) < ' '
2898 && (extra_keyboard_modifiers
& 0177) != 0))
2899 XSETINT (c
, make_ctrl_char (XINT (c
)));
2901 /* Transfer any other modifier bits directly from
2902 extra_keyboard_modifiers to c. Ignore the actual character code
2903 in the low 16 bits of extra_keyboard_modifiers. */
2904 XSETINT (c
, XINT (c
) | (extra_keyboard_modifiers
& ~0xff7f & ~CHAR_CTL
));
2914 if (commandflag
>= 0
2915 && !input_pending
&& !detect_input_pending_run_timers (0))
2923 /* Buffer switch events are only for internal wakeups
2924 so don't show them to the user.
2925 Also, don't record a key if we already did. */
2926 if (BUFFERP (c
) || key_already_recorded
)
2929 /* Process special events within read_char
2930 and loop around to read another event. */
2933 tem
= access_keymap (get_keymap (Vspecial_event_map
, 0, 1), c
, 0, 0, 1);
2938 int was_locked
= single_kboard
;
2940 last_input_char
= c
;
2941 Fcommand_execute (tem
, Qnil
, Fvector (1, &last_input_char
), Qt
);
2943 if (CONSP (c
) && EQ (XCAR (c
), Qselect_window
))
2944 /* We stopped being idle for this event; undo that. This
2945 prevents automatic window selection (under
2946 mouse_autoselect_window from acting as a real input event, for
2947 example banishing the mouse under mouse-avoidance-mode. */
2948 timer_resume_idle ();
2950 /* Resume allowing input from any kboard, if that was true before. */
2952 any_kboard_state ();
2957 /* Handle things that only apply to characters. */
2960 /* If kbd_buffer_get_event gave us an EOF, return that. */
2964 if ((STRINGP (Vkeyboard_translate_table
)
2965 && SCHARS (Vkeyboard_translate_table
) > (unsigned) XFASTINT (c
))
2966 || (VECTORP (Vkeyboard_translate_table
)
2967 && XVECTOR (Vkeyboard_translate_table
)->size
> (unsigned) XFASTINT (c
))
2968 || CHAR_TABLE_P (Vkeyboard_translate_table
))
2971 d
= Faref (Vkeyboard_translate_table
, c
);
2972 /* nil in keyboard-translate-table means no translation. */
2978 /* If this event is a mouse click in the menu bar,
2979 return just menu-bar for now. Modify the mouse click event
2980 so we won't do this twice, then queue it up. */
2981 if (EVENT_HAS_PARAMETERS (c
)
2983 && CONSP (EVENT_START (c
))
2984 && CONSP (XCDR (EVENT_START (c
))))
2988 posn
= POSN_POSN (EVENT_START (c
));
2989 /* Handle menu-bar events:
2990 insert the dummy prefix event `menu-bar'. */
2991 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
2993 /* Change menu-bar to (menu-bar) as the event "position". */
2994 POSN_SET_POSN (EVENT_START (c
), Fcons (posn
, Qnil
));
2997 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
3002 /* Store these characters into recent_keys, the dribble file if any,
3003 and the keyboard macro being defined, if any. */
3005 if (! NILP (also_record
))
3006 record_char (also_record
);
3008 /* Wipe the echo area.
3009 But first, if we are about to use an input method,
3010 save the echo area contents for it to refer to. */
3012 && ! NILP (Vinput_method_function
)
3013 && (unsigned) XINT (c
) >= ' '
3014 && (unsigned) XINT (c
) != 127
3015 && (unsigned) XINT (c
) < 256)
3017 previous_echo_area_message
= Fcurrent_message ();
3018 Vinput_method_previous_message
= previous_echo_area_message
;
3021 /* Now wipe the echo area, except for help events which do their
3022 own stuff with the echo area. */
3024 || (!(EQ (Qhelp_echo
, XCAR (c
)))
3025 && !(EQ (Qswitch_frame
, XCAR (c
)))))
3027 if (!NILP (echo_area_buffer
[0]))
3028 safe_run_hooks (Qecho_area_clear_hook
);
3029 clear_message (1, 0);
3032 reread_for_input_method
:
3034 /* Pass this to the input method, if appropriate. */
3036 && ! NILP (Vinput_method_function
)
3037 /* Don't run the input method within a key sequence,
3038 after the first event of the key sequence. */
3039 && NILP (prev_event
)
3040 && (unsigned) XINT (c
) >= ' '
3041 && (unsigned) XINT (c
) != 127
3042 && (unsigned) XINT (c
) < 256)
3045 int key_count
, key_count_reset
;
3046 struct gcpro gcpro1
;
3047 int count
= SPECPDL_INDEX ();
3049 /* Save the echo status. */
3050 int saved_immediate_echo
= current_kboard
->immediate_echo
;
3051 struct kboard
*saved_ok_to_echo
= ok_to_echo_at_next_pause
;
3052 Lisp_Object saved_echo_string
= current_kboard
->echo_string
;
3053 int saved_echo_after_prompt
= current_kboard
->echo_after_prompt
;
3056 if (before_command_restore_flag
)
3058 this_command_key_count
= before_command_key_count_1
;
3059 if (this_command_key_count
< this_single_command_key_start
)
3060 this_single_command_key_start
= this_command_key_count
;
3061 echo_truncate (before_command_echo_length_1
);
3062 before_command_restore_flag
= 0;
3066 /* Save the this_command_keys status. */
3067 key_count
= this_command_key_count
;
3068 key_count_reset
= this_command_key_count_reset
;
3071 keys
= Fcopy_sequence (this_command_keys
);
3076 /* Clear out this_command_keys. */
3077 this_command_key_count
= 0;
3078 this_command_key_count_reset
= 0;
3080 /* Now wipe the echo area. */
3081 if (!NILP (echo_area_buffer
[0]))
3082 safe_run_hooks (Qecho_area_clear_hook
);
3083 clear_message (1, 0);
3086 /* If we are not reading a key sequence,
3087 never use the echo area. */
3090 specbind (Qinput_method_use_echo_area
, Qt
);
3093 /* Call the input method. */
3094 tem
= call1 (Vinput_method_function
, c
);
3096 tem
= unbind_to (count
, tem
);
3098 /* Restore the saved echoing state
3099 and this_command_keys state. */
3100 this_command_key_count
= key_count
;
3101 this_command_key_count_reset
= key_count_reset
;
3103 this_command_keys
= keys
;
3106 ok_to_echo_at_next_pause
= saved_ok_to_echo
;
3107 current_kboard
->echo_string
= saved_echo_string
;
3108 current_kboard
->echo_after_prompt
= saved_echo_after_prompt
;
3109 if (saved_immediate_echo
)
3114 /* The input method can return no events. */
3117 /* Bring back the previous message, if any. */
3118 if (! NILP (previous_echo_area_message
))
3119 message_with_string ("%s", previous_echo_area_message
, 0);
3122 /* It returned one event or more. */
3124 Vunread_post_input_method_events
3125 = nconc2 (XCDR (tem
), Vunread_post_input_method_events
);
3130 /* Display help if not echoing. */
3131 if (CONSP (c
) && EQ (XCAR (c
), Qhelp_echo
))
3133 /* (help-echo FRAME HELP WINDOW OBJECT POS). */
3134 Lisp_Object help
, object
, position
, window
, tem
;
3136 tem
= Fcdr (XCDR (c
));
3139 window
= Fcar (tem
);
3141 object
= Fcar (tem
);
3143 position
= Fcar (tem
);
3145 show_help_echo (help
, window
, object
, position
, 0);
3147 /* We stopped being idle for this event; undo that. */
3148 timer_resume_idle ();
3152 if (! reread
|| this_command_key_count
== 0
3153 || this_command_key_count_reset
)
3156 /* Don't echo mouse motion events. */
3157 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3158 && NILP (Fzerop (Vecho_keystrokes
))
3159 && ! (EVENT_HAS_PARAMETERS (c
)
3160 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
3163 if (! NILP (also_record
))
3164 echo_char (also_record
);
3165 /* Once we reread a character, echoing can happen
3166 the next time we pause to read a new one. */
3167 ok_to_echo_at_next_pause
= current_kboard
;
3170 /* Record this character as part of the current key. */
3171 add_command_key (c
);
3172 if (! NILP (also_record
))
3173 add_command_key (also_record
);
3176 last_input_char
= c
;
3179 /* Process the help character specially if enabled */
3180 if (!NILP (Vhelp_form
) && help_char_p (c
))
3183 count
= SPECPDL_INDEX ();
3185 record_unwind_protect (Fset_window_configuration
,
3186 Fcurrent_window_configuration (Qnil
));
3188 tem0
= Feval (Vhelp_form
);
3190 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
3194 c
= read_char (0, 0, 0, Qnil
, 0);
3195 while (BUFFERP (c
));
3196 /* Remove the help from the frame */
3197 unbind_to (count
, Qnil
);
3200 if (EQ (c
, make_number (040)))
3204 c
= read_char (0, 0, 0, Qnil
, 0);
3205 while (BUFFERP (c
));
3214 /* Record a key that came from a mouse menu.
3215 Record it for echoing, for this-command-keys, and so on. */
3221 /* Wipe the echo area. */
3222 clear_message (1, 0);
3227 before_command_key_count
= this_command_key_count
;
3228 before_command_echo_length
= echo_length ();
3231 /* Don't echo mouse motion events. */
3232 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3233 && NILP (Fzerop (Vecho_keystrokes
)))
3237 /* Once we reread a character, echoing can happen
3238 the next time we pause to read a new one. */
3239 ok_to_echo_at_next_pause
= 0;
3242 /* Record this character as part of the current key. */
3243 add_command_key (c
);
3245 /* Re-reading in the middle of a command */
3246 last_input_char
= c
;
3250 /* Return 1 if should recognize C as "the help character". */
3258 if (EQ (c
, Vhelp_char
))
3260 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCDR (tail
))
3261 if (EQ (c
, XCAR (tail
)))
3266 /* Record the input event C in various ways. */
3274 if (CONSP (c
) && (EQ (XCAR (c
), Qhelp_echo
) || EQ (XCAR (c
), Qmouse_movement
)))
3276 /* To avoid filling recent_keys with help-echo and mouse-movement
3277 events, we filter out repeated help-echo events, only store the
3278 first and last in a series of mouse-movement events, and don't
3279 store repeated help-echo events which are only separated by
3280 mouse-movement events. */
3282 Lisp_Object ev1
, ev2
, ev3
;
3285 if ((ix1
= recent_keys_index
- 1) < 0)
3286 ix1
= NUM_RECENT_KEYS
- 1;
3287 ev1
= AREF (recent_keys
, ix1
);
3289 if ((ix2
= ix1
- 1) < 0)
3290 ix2
= NUM_RECENT_KEYS
- 1;
3291 ev2
= AREF (recent_keys
, ix2
);
3293 if ((ix3
= ix2
- 1) < 0)
3294 ix3
= NUM_RECENT_KEYS
- 1;
3295 ev3
= AREF (recent_keys
, ix3
);
3297 if (EQ (XCAR (c
), Qhelp_echo
))
3299 /* Don't record `help-echo' in recent_keys unless it shows some help
3300 message, and a different help than the previously recorded
3302 Lisp_Object help
, last_help
;
3304 help
= Fcar_safe (Fcdr_safe (XCDR (c
)));
3305 if (!STRINGP (help
))
3307 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qhelp_echo
)
3308 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev1
))), EQ (last_help
, help
)))
3310 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3311 && CONSP (ev2
) && EQ (XCAR (ev2
), Qhelp_echo
)
3312 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev2
))), EQ (last_help
, help
)))
3314 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3315 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3316 && CONSP (ev3
) && EQ (XCAR (ev3
), Qhelp_echo
)
3317 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev3
))), EQ (last_help
, help
)))
3320 else if (EQ (XCAR (c
), Qmouse_movement
))
3322 /* Only record one pair of `mouse-movement' on a window in recent_keys.
3323 So additional mouse movement events replace the last element. */
3324 Lisp_Object last_window
, window
;
3326 window
= Fcar_safe (Fcar_safe (XCDR (c
)));
3327 if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3328 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev1
))), EQ (last_window
, window
))
3329 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3330 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev2
))), EQ (last_window
, window
)))
3332 ASET (recent_keys
, ix1
, c
);
3338 store_kbd_macro_char (c
);
3343 ASET (recent_keys
, recent_keys_index
, c
);
3344 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
3345 recent_keys_index
= 0;
3347 else if (recorded
< 0)
3349 /* We need to remove one or two events from recent_keys.
3350 To do this, we simply put nil at those events and move the
3351 recent_keys_index backwards over those events. Usually,
3352 users will never see those nil events, as they will be
3353 overwritten by the command keys entered to see recent_keys
3356 while (recorded
++ < 0 && total_keys
> 0)
3358 if (total_keys
< NUM_RECENT_KEYS
)
3360 if (--recent_keys_index
< 0)
3361 recent_keys_index
= NUM_RECENT_KEYS
- 1;
3362 ASET (recent_keys
, recent_keys_index
, Qnil
);
3366 num_nonmacro_input_events
++;
3368 /* Write c to the dribble file. If c is a lispy event, write
3369 the event's symbol to the dribble file, in <brackets>. Bleaugh.
3370 If you, dear reader, have a better idea, you've got the source. :-) */
3375 if (XUINT (c
) < 0x100)
3376 putc (XINT (c
), dribble
);
3378 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
3382 Lisp_Object dribblee
;
3384 /* If it's a structured event, take the event header. */
3385 dribblee
= EVENT_HEAD (c
);
3387 if (SYMBOLP (dribblee
))
3389 putc ('<', dribble
);
3390 fwrite (SDATA (SYMBOL_NAME (dribblee
)), sizeof (char),
3391 SBYTES (SYMBOL_NAME (dribblee
)),
3393 putc ('>', dribble
);
3405 struct buffer
*old
= current_buffer
;
3406 Fprinc (object
, Qnil
);
3407 set_buffer_internal (XBUFFER (Vstandard_output
));
3408 call0 (intern ("help-mode"));
3409 set_buffer_internal (old
);
3413 /* Copy out or in the info on where C-g should throw to.
3414 This is used when running Lisp code from within get_char,
3415 in case get_char is called recursively.
3416 See read_process_output. */
3422 bcopy (getcjmp
, temp
, sizeof getcjmp
);
3426 restore_getcjmp (temp
)
3429 bcopy (temp
, getcjmp
, sizeof getcjmp
);
3434 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
3435 of this function. */
3438 tracking_off (old_value
)
3439 Lisp_Object old_value
;
3441 do_mouse_tracking
= old_value
;
3442 if (NILP (old_value
))
3444 /* Redisplay may have been preempted because there was input
3445 available, and it assumes it will be called again after the
3446 input has been processed. If the only input available was
3447 the sort that we have just disabled, then we need to call
3449 if (!readable_events (READABLE_EVENTS_DO_TIMERS_NOW
))
3451 redisplay_preserve_echo_area (6);
3452 get_input_pending (&input_pending
,
3453 READABLE_EVENTS_DO_TIMERS_NOW
);
3459 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
3460 doc
: /* Evaluate BODY with mouse movement events enabled.
3461 Within a `track-mouse' form, mouse motion generates input events that
3462 you can read with `read-event'.
3463 Normally, mouse motion is ignored.
3464 usage: (track-mouse BODY ...) */)
3468 int count
= SPECPDL_INDEX ();
3471 record_unwind_protect (tracking_off
, do_mouse_tracking
);
3473 do_mouse_tracking
= Qt
;
3475 val
= Fprogn (args
);
3476 return unbind_to (count
, val
);
3479 /* If mouse has moved on some frame, return one of those frames.
3480 Return 0 otherwise. */
3485 Lisp_Object tail
, frame
;
3487 FOR_EACH_FRAME (tail
, frame
)
3489 if (XFRAME (frame
)->mouse_moved
)
3490 return XFRAME (frame
);
3496 #endif /* HAVE_MOUSE */
3498 /* Low level keyboard/mouse input.
3499 kbd_buffer_store_event places events in kbd_buffer, and
3500 kbd_buffer_get_event retrieves them. */
3502 /* Return true iff there are any events in the queue that read-char
3503 would return. If this returns false, a read-char would block. */
3505 readable_events (flags
)
3508 if (flags
& READABLE_EVENTS_DO_TIMERS_NOW
)
3511 /* If the buffer contains only FOCUS_IN_EVENT events, and
3512 READABLE_EVENTS_FILTER_EVENTS is set, report it as empty. */
3513 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3515 if (flags
& (READABLE_EVENTS_FILTER_EVENTS
3516 #ifdef USE_TOOLKIT_SCROLL_BARS
3517 | READABLE_EVENTS_IGNORE_SQUEEZABLES
3521 struct input_event
*event
;
3523 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3530 #ifdef USE_TOOLKIT_SCROLL_BARS
3531 (flags
& READABLE_EVENTS_FILTER_EVENTS
) &&
3533 event
->kind
== FOCUS_IN_EVENT
)
3534 #ifdef USE_TOOLKIT_SCROLL_BARS
3535 && !((flags
& READABLE_EVENTS_IGNORE_SQUEEZABLES
)
3536 && event
->kind
== SCROLL_BAR_CLICK_EVENT
3537 && event
->part
== scroll_bar_handle
3538 && event
->modifiers
== 0)
3543 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3546 while (event
!= kbd_store_ptr
);
3553 if (!(flags
& READABLE_EVENTS_IGNORE_SQUEEZABLES
)
3554 && !NILP (do_mouse_tracking
) && some_mouse_moved ())
3559 if (current_kboard
->kbd_queue_has_data
)
3565 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
3566 if (kb
->kbd_queue_has_data
)
3572 /* Set this for debugging, to have a way to get out */
3577 event_to_kboard (event
)
3578 struct input_event
*event
;
3581 frame
= event
->frame_or_window
;
3583 frame
= XCAR (frame
);
3584 else if (WINDOWP (frame
))
3585 frame
= WINDOW_FRAME (XWINDOW (frame
));
3587 /* There are still some events that don't set this field.
3588 For now, just ignore the problem.
3589 Also ignore dead frames here. */
3590 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
3593 return FRAME_KBOARD (XFRAME (frame
));
3598 Lisp_Object Vthrow_on_input
;
3600 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
3603 kbd_buffer_store_event (event
)
3604 register struct input_event
*event
;
3606 kbd_buffer_store_event_hold (event
, 0);
3609 /* Store EVENT obtained at interrupt level into kbd_buffer, fifo.
3611 If HOLD_QUIT is 0, just stuff EVENT into the fifo.
3612 Else, if HOLD_QUIT.kind != NO_EVENT, discard EVENT.
3613 Else, if EVENT is a quit event, store the quit event
3614 in HOLD_QUIT, and return (thus ignoring further events).
3616 This is used in read_avail_input to postpone the processing
3617 of the quit event until all subsequent input events have been
3618 parsed (and discarded).
3622 kbd_buffer_store_event_hold (event
, hold_quit
)
3623 register struct input_event
*event
;
3624 struct input_event
*hold_quit
;
3626 if (event
->kind
== NO_EVENT
)
3629 if (hold_quit
&& hold_quit
->kind
!= NO_EVENT
)
3632 if (event
->kind
== ASCII_KEYSTROKE_EVENT
)
3634 register int c
= event
->code
& 0377;
3636 if (event
->modifiers
& ctrl_modifier
)
3637 c
= make_ctrl_char (c
);
3639 c
|= (event
->modifiers
3640 & (meta_modifier
| alt_modifier
3641 | hyper_modifier
| super_modifier
));
3647 struct input_event
*sp
;
3650 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
3651 kb
!= current_kboard
))
3654 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
3655 Fcons (make_number (c
), Qnil
));
3656 kb
->kbd_queue_has_data
= 1;
3657 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3659 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3662 if (event_to_kboard (sp
) == kb
)
3664 sp
->kind
= NO_EVENT
;
3665 sp
->frame_or_window
= Qnil
;
3675 bcopy (event
, (char *) hold_quit
, sizeof (*event
));
3679 /* If this results in a quit_char being returned to Emacs as
3680 input, set Vlast_event_frame properly. If this doesn't
3681 get returned to Emacs as an event, the next event read
3682 will set Vlast_event_frame again, so this is safe to do. */
3686 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
3688 focus
= event
->frame_or_window
;
3689 internal_last_event_frame
= focus
;
3690 Vlast_event_frame
= focus
;
3693 last_event_timestamp
= event
->timestamp
;
3694 interrupt_signal (0 /* dummy */);
3698 if (c
&& c
== stop_character
)
3704 /* Don't insert two BUFFER_SWITCH_EVENT's in a row.
3705 Just ignore the second one. */
3706 else if (event
->kind
== BUFFER_SWITCH_EVENT
3707 && kbd_fetch_ptr
!= kbd_store_ptr
3708 && ((kbd_store_ptr
== kbd_buffer
3709 ? kbd_buffer
+ KBD_BUFFER_SIZE
- 1
3710 : kbd_store_ptr
- 1)->kind
) == BUFFER_SWITCH_EVENT
)
3713 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
3714 kbd_store_ptr
= kbd_buffer
;
3716 /* Don't let the very last slot in the buffer become full,
3717 since that would make the two pointers equal,
3718 and that is indistinguishable from an empty buffer.
3719 Discard the event if it would fill the last slot. */
3720 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3722 *kbd_store_ptr
= *event
;
3726 /* If we're inside while-no-input, and this event qualifies
3727 as input, set quit-flag to cause an interrupt. */
3728 if (!NILP (Vthrow_on_input
)
3729 && event
->kind
!= FOCUS_IN_EVENT
3730 && event
->kind
!= HELP_EVENT
3731 && event
->kind
!= DEICONIFY_EVENT
)
3733 Vquit_flag
= Vthrow_on_input
;
3734 /* If we're inside a function that wants immediate quits,
3736 if (immediate_quit
&& NILP (Vinhibit_quit
))
3746 /* Put an input event back in the head of the event queue. */
3749 kbd_buffer_unget_event (event
)
3750 register struct input_event
*event
;
3752 if (kbd_fetch_ptr
== kbd_buffer
)
3753 kbd_fetch_ptr
= kbd_buffer
+ KBD_BUFFER_SIZE
;
3755 /* Don't let the very last slot in the buffer become full, */
3756 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3759 *kbd_fetch_ptr
= *event
;
3764 /* Generate HELP_EVENT input_events in BUFP which has room for
3765 SIZE events. If there's not enough room in BUFP, ignore this
3768 HELP is the help form.
3770 FRAME is the frame on which the help is generated. OBJECT is the
3771 Lisp object where the help was found (a buffer, a string, an
3772 overlay, or nil if neither from a string nor from a buffer. POS is
3773 the position within OBJECT where the help was found.
3775 Value is the number of input_events generated. */
3778 gen_help_event (help
, frame
, window
, object
, pos
)
3779 Lisp_Object help
, frame
, object
, window
;
3782 struct input_event event
;
3786 event
.kind
= HELP_EVENT
;
3787 event
.frame_or_window
= frame
;
3789 event
.x
= WINDOWP (window
) ? window
: frame
;
3792 kbd_buffer_store_event (&event
);
3796 /* Store HELP_EVENTs for HELP on FRAME in the input queue. */
3799 kbd_buffer_store_help_event (frame
, help
)
3800 Lisp_Object frame
, help
;
3802 struct input_event event
;
3804 event
.kind
= HELP_EVENT
;
3805 event
.frame_or_window
= frame
;
3810 kbd_buffer_store_event (&event
);
3814 /* Discard any mouse events in the event buffer by setting them to
3817 discard_mouse_events ()
3819 struct input_event
*sp
;
3820 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3822 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3825 if (sp
->kind
== MOUSE_CLICK_EVENT
3826 || sp
->kind
== WHEEL_EVENT
3828 || sp
->kind
== W32_SCROLL_BAR_CLICK_EVENT
3830 || sp
->kind
== SCROLL_BAR_CLICK_EVENT
)
3832 sp
->kind
= NO_EVENT
;
3838 /* Return non-zero if there are any real events waiting in the event
3839 buffer, not counting `NO_EVENT's.
3841 If DISCARD is non-zero, discard NO_EVENT events at the front of
3842 the input queue, possibly leaving the input queue empty if there
3843 are no real input events. */
3846 kbd_buffer_events_waiting (discard
)
3849 struct input_event
*sp
;
3851 for (sp
= kbd_fetch_ptr
;
3852 sp
!= kbd_store_ptr
&& sp
->kind
== NO_EVENT
;
3855 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3862 return sp
!= kbd_store_ptr
&& sp
->kind
!= NO_EVENT
;
3866 /* Clear input event EVENT. */
3870 struct input_event
*event
;
3872 event
->kind
= NO_EVENT
;
3876 /* Read one event from the event buffer, waiting if necessary.
3877 The value is a Lisp object representing the event.
3878 The value is nil for an event that should be ignored,
3879 or that was handled here.
3880 We always read and discard one event. */
3883 kbd_buffer_get_event (kbp
, used_mouse_menu
)
3885 int *used_mouse_menu
;
3894 *kbp
= current_kboard
;
3898 /* Wait until there is input available. */
3901 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3904 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3908 /* If the quit flag is set, then read_char will return
3909 quit_char, so that counts as "available input." */
3910 if (!NILP (Vquit_flag
))
3911 quit_throw_to_read_char ();
3913 /* One way or another, wait until input is available; then, if
3914 interrupt handlers have not read it, read it now. */
3917 wait_for_kbd_input ();
3919 /* Note SIGIO has been undef'd if FIONREAD is missing. */
3923 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3926 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3930 wait_reading_process_output (0, 0, -1, 1, Qnil
, NULL
, 0);
3932 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
3933 /* Pass 1 for EXPECT since we just waited to have input. */
3934 read_avail_input (1);
3936 #endif /* not VMS */
3939 if (CONSP (Vunread_command_events
))
3942 first
= XCAR (Vunread_command_events
);
3943 Vunread_command_events
= XCDR (Vunread_command_events
);
3944 *kbp
= current_kboard
;
3948 /* At this point, we know that there is a readable event available
3949 somewhere. If the event queue is empty, then there must be a
3950 mouse movement enabled and available. */
3951 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3953 struct input_event
*event
;
3955 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3959 last_event_timestamp
= event
->timestamp
;
3962 *kbp
= event_to_kboard (event
);
3964 *kbp
= current_kboard
; /* Better than returning null ptr? */
3966 *kbp
= &the_only_kboard
;
3971 /* These two kinds of events get special handling
3972 and don't actually appear to the command loop.
3973 We return nil for them. */
3974 if (event
->kind
== SELECTION_REQUEST_EVENT
3975 || event
->kind
== SELECTION_CLEAR_EVENT
)
3978 struct input_event copy
;
3980 /* Remove it from the buffer before processing it,
3981 since otherwise swallow_events will see it
3982 and process it again. */
3984 kbd_fetch_ptr
= event
+ 1;
3985 input_pending
= readable_events (0);
3986 x_handle_selection_event (©
);
3988 /* We're getting selection request events, but we don't have
3994 #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS)
3995 else if (event
->kind
== DELETE_WINDOW_EVENT
)
3997 /* Make an event (delete-frame (FRAME)). */
3998 obj
= Fcons (event
->frame_or_window
, Qnil
);
3999 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
4000 kbd_fetch_ptr
= event
+ 1;
4003 #if defined (HAVE_X11) || defined (HAVE_NTGUI)
4004 else if (event
->kind
== ICONIFY_EVENT
)
4006 /* Make an event (iconify-frame (FRAME)). */
4007 obj
= Fcons (event
->frame_or_window
, Qnil
);
4008 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
4009 kbd_fetch_ptr
= event
+ 1;
4011 else if (event
->kind
== DEICONIFY_EVENT
)
4013 /* Make an event (make-frame-visible (FRAME)). */
4014 obj
= Fcons (event
->frame_or_window
, Qnil
);
4015 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
4016 kbd_fetch_ptr
= event
+ 1;
4019 else if (event
->kind
== BUFFER_SWITCH_EVENT
)
4021 /* The value doesn't matter here; only the type is tested. */
4022 XSETBUFFER (obj
, current_buffer
);
4023 kbd_fetch_ptr
= event
+ 1;
4025 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
4026 || defined (USE_GTK)
4027 else if (event
->kind
== MENU_BAR_ACTIVATE_EVENT
)
4029 kbd_fetch_ptr
= event
+ 1;
4030 input_pending
= readable_events (0);
4031 if (FRAME_LIVE_P (XFRAME (event
->frame_or_window
)))
4032 x_activate_menubar (XFRAME (event
->frame_or_window
));
4035 #if defined (WINDOWSNT) || defined (MAC_OS)
4036 else if (event
->kind
== LANGUAGE_CHANGE_EVENT
)
4039 /* Make an event (language-change (KEY_SCRIPT)). */
4040 obj
= Fcons (make_number (event
->code
), Qnil
);
4042 /* Make an event (language-change (FRAME CHARSET LCID)). */
4043 obj
= Fcons (event
->frame_or_window
, Qnil
);
4045 obj
= Fcons (Qlanguage_change
, Fcons (obj
, Qnil
));
4046 kbd_fetch_ptr
= event
+ 1;
4049 else if (event
->kind
== SAVE_SESSION_EVENT
)
4051 obj
= Fcons (Qsave_session
, Qnil
);
4052 kbd_fetch_ptr
= event
+ 1;
4054 /* Just discard these, by returning nil.
4055 With MULTI_KBOARD, these events are used as placeholders
4056 when we need to randomly delete events from the queue.
4057 (They shouldn't otherwise be found in the buffer,
4058 but on some machines it appears they do show up
4059 even without MULTI_KBOARD.) */
4060 /* On Windows NT/9X, NO_EVENT is used to delete extraneous
4061 mouse events during a popup-menu call. */
4062 else if (event
->kind
== NO_EVENT
)
4063 kbd_fetch_ptr
= event
+ 1;
4064 else if (event
->kind
== HELP_EVENT
)
4066 Lisp_Object object
, position
, help
, frame
, window
;
4068 frame
= event
->frame_or_window
;
4069 object
= event
->arg
;
4070 position
= make_number (event
->code
);
4073 clear_event (event
);
4075 kbd_fetch_ptr
= event
+ 1;
4076 if (!WINDOWP (window
))
4078 obj
= Fcons (Qhelp_echo
,
4079 list5 (frame
, help
, window
, object
, position
));
4081 else if (event
->kind
== FOCUS_IN_EVENT
)
4083 /* Notification of a FocusIn event. The frame receiving the
4084 focus is in event->frame_or_window. Generate a
4085 switch-frame event if necessary. */
4086 Lisp_Object frame
, focus
;
4088 frame
= event
->frame_or_window
;
4089 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4093 if (!EQ (frame
, internal_last_event_frame
)
4094 && !EQ (frame
, selected_frame
))
4095 obj
= make_lispy_switch_frame (frame
);
4096 internal_last_event_frame
= frame
;
4097 kbd_fetch_ptr
= event
+ 1;
4101 /* If this event is on a different frame, return a switch-frame this
4102 time, and leave the event in the queue for next time. */
4106 frame
= event
->frame_or_window
;
4108 frame
= XCAR (frame
);
4109 else if (WINDOWP (frame
))
4110 frame
= WINDOW_FRAME (XWINDOW (frame
));
4112 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4116 if (! EQ (frame
, internal_last_event_frame
)
4117 && !EQ (frame
, selected_frame
))
4118 obj
= make_lispy_switch_frame (frame
);
4119 internal_last_event_frame
= frame
;
4121 /* If we didn't decide to make a switch-frame event, go ahead
4122 and build a real event from the queue entry. */
4126 obj
= make_lispy_event (event
);
4128 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined(MAC_OS) \
4129 || defined (USE_GTK)
4130 /* If this was a menu selection, then set the flag to inhibit
4131 writing to last_nonmenu_event. Don't do this if the event
4132 we're returning is (menu-bar), though; that indicates the
4133 beginning of the menu sequence, and we might as well leave
4134 that as the `event with parameters' for this selection. */
4136 && !EQ (event
->frame_or_window
, event
->arg
)
4137 && (event
->kind
== MENU_BAR_EVENT
4138 || event
->kind
== TOOL_BAR_EVENT
))
4139 *used_mouse_menu
= 1;
4142 /* Wipe out this event, to catch bugs. */
4143 clear_event (event
);
4144 kbd_fetch_ptr
= event
+ 1;
4149 /* Try generating a mouse motion event. */
4150 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
4152 FRAME_PTR f
= some_mouse_moved ();
4153 Lisp_Object bar_window
;
4154 enum scroll_bar_part part
;
4158 *kbp
= current_kboard
;
4159 /* Note that this uses F to determine which display to look at.
4160 If there is no valid info, it does not store anything
4161 so x remains nil. */
4163 (*mouse_position_hook
) (&f
, 0, &bar_window
, &part
, &x
, &y
, &time
);
4167 /* Decide if we should generate a switch-frame event. Don't
4168 generate switch-frame events for motion outside of all Emacs
4174 frame
= FRAME_FOCUS_FRAME (f
);
4176 XSETFRAME (frame
, f
);
4178 if (! EQ (frame
, internal_last_event_frame
)
4179 && !EQ (frame
, selected_frame
))
4180 obj
= make_lispy_switch_frame (frame
);
4181 internal_last_event_frame
= frame
;
4184 /* If we didn't decide to make a switch-frame event, go ahead and
4185 return a mouse-motion event. */
4186 if (!NILP (x
) && NILP (obj
))
4187 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
4189 #endif /* HAVE_MOUSE */
4191 /* We were promised by the above while loop that there was
4192 something for us to read! */
4195 input_pending
= readable_events (0);
4197 Vlast_event_frame
= internal_last_event_frame
;
4202 /* Process any events that are not user-visible,
4203 then return, without reading any user-visible events. */
4206 swallow_events (do_display
)
4211 while (kbd_fetch_ptr
!= kbd_store_ptr
)
4213 struct input_event
*event
;
4215 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
4219 last_event_timestamp
= event
->timestamp
;
4221 /* These two kinds of events get special handling
4222 and don't actually appear to the command loop. */
4223 if (event
->kind
== SELECTION_REQUEST_EVENT
4224 || event
->kind
== SELECTION_CLEAR_EVENT
)
4227 struct input_event copy
;
4229 /* Remove it from the buffer before processing it,
4230 since otherwise swallow_events called recursively could see it
4231 and process it again. */
4233 kbd_fetch_ptr
= event
+ 1;
4234 input_pending
= readable_events (0);
4235 x_handle_selection_event (©
);
4237 /* We're getting selection request events, but we don't have
4246 old_timers_run
= timers_run
;
4247 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
4249 if (timers_run
!= old_timers_run
&& do_display
)
4250 redisplay_preserve_echo_area (7);
4253 /* Record the start of when Emacs is idle,
4254 for the sake of running idle-time timers. */
4261 /* If we are already in the idle state, do nothing. */
4262 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4265 EMACS_GET_TIME (timer_idleness_start_time
);
4267 timer_last_idleness_start_time
= timer_idleness_start_time
;
4269 /* Mark all idle-time timers as once again candidates for running. */
4270 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCDR (timers
))
4274 timer
= XCAR (timers
);
4276 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4278 XVECTOR (timer
)->contents
[0] = Qnil
;
4282 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
4287 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
4290 /* Resume idle timer from last idle start time. */
4293 timer_resume_idle ()
4295 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4298 timer_idleness_start_time
= timer_last_idleness_start_time
;
4301 /* This is only for debugging. */
4302 struct input_event last_timer_event
;
4304 /* Check whether a timer has fired. To prevent larger problems we simply
4305 disregard elements that are not proper timers. Do not make a circular
4306 timer list for the time being.
4308 Returns the number of seconds to wait until the next timer fires. If a
4309 timer is triggering now, return zero seconds.
4310 If no timer is active, return -1 seconds.
4312 If a timer is ripe, we run it, with quitting turned off.
4314 DO_IT_NOW is now ignored. It used to mean that we should
4315 run the timer directly instead of queueing a timer-event.
4316 Now we always run timers directly. */
4319 timer_check (do_it_now
)
4322 EMACS_TIME nexttime
;
4323 EMACS_TIME now
, idleness_now
;
4324 Lisp_Object timers
, idle_timers
, chosen_timer
;
4325 struct gcpro gcpro1
, gcpro2
, gcpro3
;
4327 EMACS_SET_SECS (nexttime
, -1);
4328 EMACS_SET_USECS (nexttime
, -1);
4330 /* Always consider the ordinary timers. */
4331 timers
= Vtimer_list
;
4332 /* Consider the idle timers only if Emacs is idle. */
4333 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4334 idle_timers
= Vtimer_idle_list
;
4337 chosen_timer
= Qnil
;
4338 GCPRO3 (timers
, idle_timers
, chosen_timer
);
4340 if (CONSP (timers
) || CONSP (idle_timers
))
4342 EMACS_GET_TIME (now
);
4343 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4344 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
4347 while (CONSP (timers
) || CONSP (idle_timers
))
4349 Lisp_Object
*vector
;
4350 Lisp_Object timer
= Qnil
, idle_timer
= Qnil
;
4351 EMACS_TIME timer_time
, idle_timer_time
;
4352 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
4354 /* Skip past invalid timers and timers already handled. */
4357 timer
= XCAR (timers
);
4358 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4360 timers
= XCDR (timers
);
4363 vector
= XVECTOR (timer
)->contents
;
4365 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4366 || !INTEGERP (vector
[3])
4367 || ! NILP (vector
[0]))
4369 timers
= XCDR (timers
);
4373 if (!NILP (idle_timers
))
4375 timer
= XCAR (idle_timers
);
4376 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4378 idle_timers
= XCDR (idle_timers
);
4381 vector
= XVECTOR (timer
)->contents
;
4383 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4384 || !INTEGERP (vector
[3])
4385 || ! NILP (vector
[0]))
4387 idle_timers
= XCDR (idle_timers
);
4392 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
4393 based on the next ordinary timer.
4394 TIMER_DIFFERENCE is the distance in time from NOW to when
4395 this timer becomes ripe (negative if it's already ripe). */
4398 timer
= XCAR (timers
);
4399 vector
= XVECTOR (timer
)->contents
;
4400 EMACS_SET_SECS (timer_time
,
4401 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4402 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
4403 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
4406 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
4407 based on the next idle timer. */
4408 if (!NILP (idle_timers
))
4410 idle_timer
= XCAR (idle_timers
);
4411 vector
= XVECTOR (idle_timer
)->contents
;
4412 EMACS_SET_SECS (idle_timer_time
,
4413 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4414 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
4415 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
4418 /* Decide which timer is the next timer,
4419 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
4420 Also step down the list where we found that timer. */
4422 if (! NILP (timers
) && ! NILP (idle_timers
))
4425 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
4426 if (EMACS_TIME_NEG_P (temp
))
4428 chosen_timer
= timer
;
4429 timers
= XCDR (timers
);
4430 difference
= timer_difference
;
4434 chosen_timer
= idle_timer
;
4435 idle_timers
= XCDR (idle_timers
);
4436 difference
= idle_timer_difference
;
4439 else if (! NILP (timers
))
4441 chosen_timer
= timer
;
4442 timers
= XCDR (timers
);
4443 difference
= timer_difference
;
4447 chosen_timer
= idle_timer
;
4448 idle_timers
= XCDR (idle_timers
);
4449 difference
= idle_timer_difference
;
4451 vector
= XVECTOR (chosen_timer
)->contents
;
4453 /* If timer is ripe, run it if it hasn't been run. */
4454 if (EMACS_TIME_NEG_P (difference
)
4455 || (EMACS_SECS (difference
) == 0
4456 && EMACS_USECS (difference
) == 0))
4458 if (NILP (vector
[0]))
4460 int was_locked
= single_kboard
;
4461 int count
= SPECPDL_INDEX ();
4462 Lisp_Object old_deactivate_mark
= Vdeactivate_mark
;
4464 /* Mark the timer as triggered to prevent problems if the lisp
4465 code fails to reschedule it right. */
4468 specbind (Qinhibit_quit
, Qt
);
4470 call1 (Qtimer_event_handler
, chosen_timer
);
4471 Vdeactivate_mark
= old_deactivate_mark
;
4473 unbind_to (count
, Qnil
);
4475 /* Resume allowing input from any kboard, if that was true before. */
4477 any_kboard_state ();
4479 /* Since we have handled the event,
4480 we don't need to tell the caller to wake up and do it. */
4484 /* When we encounter a timer that is still waiting,
4485 return the amount of time to wait before it is ripe. */
4492 /* No timers are pending in the future. */
4493 /* Return 0 if we generated an event, and -1 if not. */
4498 /* Caches for modify_event_symbol. */
4499 static Lisp_Object accent_key_syms
;
4500 static Lisp_Object func_key_syms
;
4501 static Lisp_Object mouse_syms
;
4502 static Lisp_Object wheel_syms
;
4503 static Lisp_Object drag_n_drop_syms
;
4505 /* This is a list of keysym codes for special "accent" characters.
4506 It parallels lispy_accent_keys. */
4508 static int lispy_accent_codes
[] =
4510 #ifdef XK_dead_circumflex
4515 #ifdef XK_dead_grave
4520 #ifdef XK_dead_tilde
4525 #ifdef XK_dead_diaeresis
4530 #ifdef XK_dead_macron
4535 #ifdef XK_dead_degree
4540 #ifdef XK_dead_acute
4545 #ifdef XK_dead_cedilla
4550 #ifdef XK_dead_breve
4555 #ifdef XK_dead_ogonek
4560 #ifdef XK_dead_caron
4565 #ifdef XK_dead_doubleacute
4566 XK_dead_doubleacute
,
4570 #ifdef XK_dead_abovedot
4575 #ifdef XK_dead_abovering
4585 #ifdef XK_dead_belowdot
4590 #ifdef XK_dead_voiced_sound
4591 XK_dead_voiced_sound
,
4595 #ifdef XK_dead_semivoiced_sound
4596 XK_dead_semivoiced_sound
,
4612 /* This is a list of Lisp names for special "accent" characters.
4613 It parallels lispy_accent_codes. */
4615 static char *lispy_accent_keys
[] =
4633 "dead-voiced-sound",
4634 "dead-semivoiced-sound",
4640 #define FUNCTION_KEY_OFFSET 0x0
4642 char *lispy_function_keys
[] =
4646 0, /* VK_LBUTTON 0x01 */
4647 0, /* VK_RBUTTON 0x02 */
4648 "cancel", /* VK_CANCEL 0x03 */
4649 0, /* VK_MBUTTON 0x04 */
4651 0, 0, 0, /* 0x05 .. 0x07 */
4653 "backspace", /* VK_BACK 0x08 */
4654 "tab", /* VK_TAB 0x09 */
4656 0, 0, /* 0x0A .. 0x0B */
4658 "clear", /* VK_CLEAR 0x0C */
4659 "return", /* VK_RETURN 0x0D */
4661 0, 0, /* 0x0E .. 0x0F */
4663 0, /* VK_SHIFT 0x10 */
4664 0, /* VK_CONTROL 0x11 */
4665 0, /* VK_MENU 0x12 */
4666 "pause", /* VK_PAUSE 0x13 */
4667 "capslock", /* VK_CAPITAL 0x14 */
4669 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
4671 "escape", /* VK_ESCAPE 0x1B */
4673 0, 0, 0, 0, /* 0x1C .. 0x1F */
4675 0, /* VK_SPACE 0x20 */
4676 "prior", /* VK_PRIOR 0x21 */
4677 "next", /* VK_NEXT 0x22 */
4678 "end", /* VK_END 0x23 */
4679 "home", /* VK_HOME 0x24 */
4680 "left", /* VK_LEFT 0x25 */
4681 "up", /* VK_UP 0x26 */
4682 "right", /* VK_RIGHT 0x27 */
4683 "down", /* VK_DOWN 0x28 */
4684 "select", /* VK_SELECT 0x29 */
4685 "print", /* VK_PRINT 0x2A */
4686 "execute", /* VK_EXECUTE 0x2B */
4687 "snapshot", /* VK_SNAPSHOT 0x2C */
4688 "insert", /* VK_INSERT 0x2D */
4689 "delete", /* VK_DELETE 0x2E */
4690 "help", /* VK_HELP 0x2F */
4692 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
4694 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4696 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
4698 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
4700 0, 0, 0, 0, 0, 0, 0, 0, 0,
4701 0, 0, 0, 0, 0, 0, 0, 0, 0,
4702 0, 0, 0, 0, 0, 0, 0, 0,
4704 "lwindow", /* VK_LWIN 0x5B */
4705 "rwindow", /* VK_RWIN 0x5C */
4706 "apps", /* VK_APPS 0x5D */
4708 0, 0, /* 0x5E .. 0x5F */
4710 "kp-0", /* VK_NUMPAD0 0x60 */
4711 "kp-1", /* VK_NUMPAD1 0x61 */
4712 "kp-2", /* VK_NUMPAD2 0x62 */
4713 "kp-3", /* VK_NUMPAD3 0x63 */
4714 "kp-4", /* VK_NUMPAD4 0x64 */
4715 "kp-5", /* VK_NUMPAD5 0x65 */
4716 "kp-6", /* VK_NUMPAD6 0x66 */
4717 "kp-7", /* VK_NUMPAD7 0x67 */
4718 "kp-8", /* VK_NUMPAD8 0x68 */
4719 "kp-9", /* VK_NUMPAD9 0x69 */
4720 "kp-multiply", /* VK_MULTIPLY 0x6A */
4721 "kp-add", /* VK_ADD 0x6B */
4722 "kp-separator", /* VK_SEPARATOR 0x6C */
4723 "kp-subtract", /* VK_SUBTRACT 0x6D */
4724 "kp-decimal", /* VK_DECIMAL 0x6E */
4725 "kp-divide", /* VK_DIVIDE 0x6F */
4726 "f1", /* VK_F1 0x70 */
4727 "f2", /* VK_F2 0x71 */
4728 "f3", /* VK_F3 0x72 */
4729 "f4", /* VK_F4 0x73 */
4730 "f5", /* VK_F5 0x74 */
4731 "f6", /* VK_F6 0x75 */
4732 "f7", /* VK_F7 0x76 */
4733 "f8", /* VK_F8 0x77 */
4734 "f9", /* VK_F9 0x78 */
4735 "f10", /* VK_F10 0x79 */
4736 "f11", /* VK_F11 0x7A */
4737 "f12", /* VK_F12 0x7B */
4738 "f13", /* VK_F13 0x7C */
4739 "f14", /* VK_F14 0x7D */
4740 "f15", /* VK_F15 0x7E */
4741 "f16", /* VK_F16 0x7F */
4742 "f17", /* VK_F17 0x80 */
4743 "f18", /* VK_F18 0x81 */
4744 "f19", /* VK_F19 0x82 */
4745 "f20", /* VK_F20 0x83 */
4746 "f21", /* VK_F21 0x84 */
4747 "f22", /* VK_F22 0x85 */
4748 "f23", /* VK_F23 0x86 */
4749 "f24", /* VK_F24 0x87 */
4751 0, 0, 0, 0, /* 0x88 .. 0x8B */
4752 0, 0, 0, 0, /* 0x8C .. 0x8F */
4754 "kp-numlock", /* VK_NUMLOCK 0x90 */
4755 "scroll", /* VK_SCROLL 0x91 */
4757 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
4758 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
4759 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
4760 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
4761 "kp-end", /* VK_NUMPAD_END 0x96 */
4762 "kp-home", /* VK_NUMPAD_HOME 0x97 */
4763 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
4764 "kp-up", /* VK_NUMPAD_UP 0x99 */
4765 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
4766 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
4767 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
4768 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
4770 0, 0, /* 0x9E .. 0x9F */
4773 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
4774 * Used only as parameters to GetAsyncKeyState and GetKeyState.
4775 * No other API or message will distinguish left and right keys this way.
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,
4782 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4783 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4789 "attn", /* VK_ATTN 0xF6 */
4790 "crsel", /* VK_CRSEL 0xF7 */
4791 "exsel", /* VK_EXSEL 0xF8 */
4792 "ereof", /* VK_EREOF 0xF9 */
4793 "play", /* VK_PLAY 0xFA */
4794 "zoom", /* VK_ZOOM 0xFB */
4795 "noname", /* VK_NONAME 0xFC */
4796 "pa1", /* VK_PA1 0xFD */
4797 "oem_clear", /* VK_OEM_CLEAR 0xFE */
4801 #else /* not HAVE_NTGUI */
4803 /* This should be dealt with in XTread_socket now, and that doesn't
4804 depend on the client system having the Kana syms defined. See also
4805 the XK_kana_A case below. */
4808 static char *lispy_kana_keys
[] =
4810 /* X Keysym value */
4811 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x400 .. 0x40f */
4812 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x410 .. 0x41f */
4813 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x420 .. 0x42f */
4814 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x430 .. 0x43f */
4815 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x440 .. 0x44f */
4816 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x450 .. 0x45f */
4817 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x460 .. 0x46f */
4818 0,0,0,0,0,0,0,0,0,0,0,0,0,0,"overline",0,
4819 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x480 .. 0x48f */
4820 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x490 .. 0x49f */
4821 0, "kana-fullstop", "kana-openingbracket", "kana-closingbracket",
4822 "kana-comma", "kana-conjunctive", "kana-WO", "kana-a",
4823 "kana-i", "kana-u", "kana-e", "kana-o",
4824 "kana-ya", "kana-yu", "kana-yo", "kana-tsu",
4825 "prolongedsound", "kana-A", "kana-I", "kana-U",
4826 "kana-E", "kana-O", "kana-KA", "kana-KI",
4827 "kana-KU", "kana-KE", "kana-KO", "kana-SA",
4828 "kana-SHI", "kana-SU", "kana-SE", "kana-SO",
4829 "kana-TA", "kana-CHI", "kana-TSU", "kana-TE",
4830 "kana-TO", "kana-NA", "kana-NI", "kana-NU",
4831 "kana-NE", "kana-NO", "kana-HA", "kana-HI",
4832 "kana-FU", "kana-HE", "kana-HO", "kana-MA",
4833 "kana-MI", "kana-MU", "kana-ME", "kana-MO",
4834 "kana-YA", "kana-YU", "kana-YO", "kana-RA",
4835 "kana-RI", "kana-RU", "kana-RE", "kana-RO",
4836 "kana-WA", "kana-N", "voicedsound", "semivoicedsound",
4837 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4e0 .. 0x4ef */
4838 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4f0 .. 0x4ff */
4840 #endif /* XK_kana_A */
4843 #define FUNCTION_KEY_OFFSET 0xff00
4845 /* You'll notice that this table is arranged to be conveniently
4846 indexed by X Windows keysym values. */
4847 static char *lispy_function_keys
[] =
4849 /* X Keysym value */
4851 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00...0f */
4852 "backspace", "tab", "linefeed", "clear",
4854 0, 0, 0, "pause", /* 0xff10...1f */
4855 0, 0, 0, 0, 0, 0, 0, "escape",
4857 0, "kanji", "muhenkan", "henkan", /* 0xff20...2f */
4858 "romaji", "hiragana", "katakana", "hiragana-katakana",
4859 "zenkaku", "hankaku", "zenkaku-hankaku", "touroku",
4860 "massyo", "kana-lock", "kana-shift", "eisu-shift",
4861 "eisu-toggle", /* 0xff30...3f */
4862 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4863 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
4865 "home", "left", "up", "right", /* 0xff50 */ /* IsCursorKey */
4866 "down", "prior", "next", "end",
4867 "begin", 0, 0, 0, 0, 0, 0, 0,
4868 "select", /* 0xff60 */ /* IsMiscFunctionKey */
4879 "break", /* 0xff6b */
4882 0, 0, 0, 0, "backtab", 0, 0, 0, /* 0xff70... */
4883 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff78... */
4884 "kp-space", /* 0xff80 */ /* IsKeypadKey */
4885 0, 0, 0, 0, 0, 0, 0, 0,
4886 "kp-tab", /* 0xff89 */
4888 "kp-enter", /* 0xff8d */
4890 "kp-f1", /* 0xff91 */
4894 "kp-home", /* 0xff95 */
4899 "kp-prior", /* kp-page-up */
4900 "kp-next", /* kp-page-down */
4906 0, 0, 0, 0, 0, 0, 0, 0, 0,
4907 "kp-multiply", /* 0xffaa */
4912 "kp-divide", /* 0xffaf */
4913 "kp-0", /* 0xffb0 */
4914 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
4917 "kp-equal", /* 0xffbd */
4918 "f1", /* 0xffbe */ /* IsFunctionKey */
4920 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
4921 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
4922 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
4923 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
4924 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
4925 0, 0, 0, 0, 0, 0, 0, 0,
4926 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
4927 0, 0, 0, 0, 0, 0, 0, "delete"
4930 /* ISO 9995 Function and Modifier Keys; the first byte is 0xFE. */
4931 #define ISO_FUNCTION_KEY_OFFSET 0xfe00
4933 static char *iso_lispy_function_keys
[] =
4935 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe00 */
4936 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe08 */
4937 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe10 */
4938 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe18 */
4939 "iso-lefttab", /* 0xfe20 */
4940 "iso-move-line-up", "iso-move-line-down",
4941 "iso-partial-line-up", "iso-partial-line-down",
4942 "iso-partial-space-left", "iso-partial-space-right",
4943 "iso-set-margin-left", "iso-set-margin-right", /* 0xffe27, 28 */
4944 "iso-release-margin-left", "iso-release-margin-right",
4945 "iso-release-both-margins",
4946 "iso-fast-cursor-left", "iso-fast-cursor-right",
4947 "iso-fast-cursor-up", "iso-fast-cursor-down",
4948 "iso-continuous-underline", "iso-discontinuous-underline", /* 0xfe30, 31 */
4949 "iso-emphasize", "iso-center-object", "iso-enter", /* ... 0xfe34 */
4952 #endif /* not HAVE_NTGUI */
4954 Lisp_Object Vlispy_mouse_stem
;
4956 static char *lispy_wheel_names
[] =
4958 "wheel-up", "wheel-down"
4961 /* drag-n-drop events are generated when a set of selected files are
4962 dragged from another application and dropped onto an Emacs window. */
4963 static char *lispy_drag_n_drop_names
[] =
4968 /* Scroll bar parts. */
4969 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
4970 Lisp_Object Qup
, Qdown
, Qbottom
, Qend_scroll
;
4971 Lisp_Object Qtop
, Qratio
;
4973 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
4974 Lisp_Object
*scroll_bar_parts
[] = {
4975 &Qabove_handle
, &Qhandle
, &Qbelow_handle
,
4976 &Qup
, &Qdown
, &Qtop
, &Qbottom
, &Qend_scroll
, &Qratio
4979 /* User signal events. */
4980 Lisp_Object Qusr1_signal
, Qusr2_signal
;
4982 Lisp_Object
*lispy_user_signals
[] =
4984 &Qusr1_signal
, &Qusr2_signal
4988 /* A vector, indexed by button number, giving the down-going location
4989 of currently depressed buttons, both scroll bar and non-scroll bar.
4991 The elements have the form
4992 (BUTTON-NUMBER MODIFIER-MASK . REST)
4993 where REST is the cdr of a position as it would be reported in the event.
4995 The make_lispy_event function stores positions here to tell the
4996 difference between click and drag events, and to store the starting
4997 location to be included in drag events. */
4999 static Lisp_Object button_down_location
;
5001 /* Information about the most recent up-going button event: Which
5002 button, what location, and what time. */
5004 static int last_mouse_button
;
5005 static int last_mouse_x
;
5006 static int last_mouse_y
;
5007 static unsigned long button_down_time
;
5009 /* The maximum time between clicks to make a double-click, or Qnil to
5010 disable double-click detection, or Qt for no time limit. */
5012 Lisp_Object Vdouble_click_time
;
5014 /* Maximum number of pixels the mouse may be moved between clicks
5015 to make a double-click. */
5017 EMACS_INT double_click_fuzz
;
5019 /* The number of clicks in this multiple-click. */
5021 int double_click_count
;
5023 /* Return position of a mouse click or wheel event */
5026 make_lispy_position (f
, x
, y
, time
)
5032 enum window_part part
;
5033 Lisp_Object posn
= Qnil
;
5034 Lisp_Object extra_info
= Qnil
;
5037 /* Set `window' to the window under frame pixel coordinates (x,y) */
5039 window
= window_from_coordinates (f
, XINT (*x
), XINT (*y
),
5040 &part
, &wx
, &wy
, 0);
5044 if (WINDOWP (window
))
5046 /* It's a click in window window at frame coordinates (x,y) */
5047 struct window
*w
= XWINDOW (window
);
5048 Lisp_Object string_info
= Qnil
;
5049 int textpos
= -1, rx
= -1, ry
= -1;
5050 int dx
= -1, dy
= -1;
5051 int width
= -1, height
= -1;
5052 Lisp_Object object
= Qnil
;
5054 /* Set event coordinates to window-relative coordinates
5055 for constructing the Lisp event below. */
5059 if (part
== ON_MODE_LINE
|| part
== ON_HEADER_LINE
)
5061 /* Mode line or header line. Look for a string under
5062 the mouse that may have a `local-map' property. */
5066 posn
= part
== ON_MODE_LINE
? Qmode_line
: Qheader_line
;
5068 string
= mode_line_string (w
, part
, &rx
, &ry
, &charpos
,
5069 &object
, &dx
, &dy
, &width
, &height
);
5070 if (STRINGP (string
))
5071 string_info
= Fcons (string
, make_number (charpos
));
5072 if (w
== XWINDOW (selected_window
))
5075 textpos
= XMARKER (w
->pointm
)->charpos
;
5077 else if (part
== ON_VERTICAL_BORDER
)
5079 posn
= Qvertical_line
;
5084 else if (part
== ON_LEFT_MARGIN
|| part
== ON_RIGHT_MARGIN
)
5089 posn
= (part
== ON_LEFT_MARGIN
) ? Qleft_margin
: Qright_margin
;
5091 string
= marginal_area_string (w
, part
, &rx
, &ry
, &charpos
,
5092 &object
, &dx
, &dy
, &width
, &height
);
5093 if (STRINGP (string
))
5094 string_info
= Fcons (string
, make_number (charpos
));
5096 else if (part
== ON_LEFT_FRINGE
|| part
== ON_RIGHT_FRINGE
)
5098 posn
= (part
== ON_LEFT_FRINGE
) ? Qleft_fringe
: Qright_fringe
;
5101 if (part
== ON_RIGHT_FRINGE
)
5102 dx
-= (window_box_width (w
, LEFT_MARGIN_AREA
)
5103 + window_box_width (w
, TEXT_AREA
)
5104 + (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
5105 ? window_box_width (w
, RIGHT_MARGIN_AREA
)
5107 else if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
5108 dx
-= window_box_width (w
, LEFT_MARGIN_AREA
);
5113 Lisp_Object string2
, object2
= Qnil
;
5114 struct display_pos p
;
5116 int width2
, height2
;
5117 wx
= max (WINDOW_LEFT_MARGIN_WIDTH (w
), wx
);
5118 string2
= buffer_posn_from_coords (w
, &wx
, &wy
, &p
,
5119 &object2
, &dx2
, &dy2
,
5121 textpos
= CHARPOS (p
.pos
);
5122 if (rx
< 0) rx
= wx
;
5123 if (ry
< 0) ry
= wy
;
5124 if (dx
< 0) dx
= dx2
;
5125 if (dy
< 0) dy
= dy2
;
5126 if (width
< 0) width
= width2
;
5127 if (height
< 0) height
= height2
;
5131 posn
= make_number (textpos
);
5132 if (STRINGP (string2
))
5133 string_info
= Fcons (string2
,
5134 make_number (CHARPOS (p
.string_pos
)));
5140 #ifdef HAVE_WINDOW_SYSTEM
5141 if (IMAGEP (object
))
5143 Lisp_Object image_map
, hotspot
;
5144 if ((image_map
= Fplist_get (XCDR (object
), QCmap
),
5146 && (hotspot
= find_hot_spot (image_map
, dx
, dy
),
5148 && (hotspot
= XCDR (hotspot
), CONSP (hotspot
)))
5149 posn
= XCAR (hotspot
);
5154 extra_info
= Fcons (object
,
5155 Fcons (Fcons (make_number (dx
),
5157 Fcons (Fcons (make_number (width
),
5158 make_number (height
)),
5162 extra_info
= Fcons (string_info
,
5163 Fcons (make_number (textpos
),
5164 Fcons (Fcons (make_number (rx
),
5170 XSETFRAME (window
, f
);
5175 XSETFASTINT (*x
, 0);
5176 XSETFASTINT (*y
, 0);
5179 return Fcons (window
,
5181 Fcons (Fcons (*x
, *y
),
5182 Fcons (make_number (time
),
5186 /* Given a struct input_event, build the lisp event which represents
5187 it. If EVENT is 0, build a mouse movement event from the mouse
5188 movement buffer, which should have a movement event in it.
5190 Note that events must be passed to this function in the order they
5191 are received; this function stores the location of button presses
5192 in order to build drag events when the button is released. */
5195 make_lispy_event (event
)
5196 struct input_event
*event
;
5200 switch (SWITCH_ENUM_CAST (event
->kind
))
5202 /* A simple keystroke. */
5203 case ASCII_KEYSTROKE_EVENT
:
5205 Lisp_Object lispy_c
;
5206 int c
= event
->code
& 0377;
5207 /* Turn ASCII characters into control characters
5209 if (event
->modifiers
& ctrl_modifier
)
5210 c
= make_ctrl_char (c
);
5212 /* Add in the other modifier bits. We took care of ctrl_modifier
5213 just above, and the shift key was taken care of by the X code,
5214 and applied to control characters by make_ctrl_char. */
5215 c
|= (event
->modifiers
5216 & (meta_modifier
| alt_modifier
5217 | hyper_modifier
| super_modifier
));
5218 /* Distinguish Shift-SPC from SPC. */
5219 if ((event
->code
& 0377) == 040
5220 && event
->modifiers
& shift_modifier
)
5221 c
|= shift_modifier
;
5222 button_down_time
= 0;
5223 XSETFASTINT (lispy_c
, c
);
5227 case MULTIBYTE_CHAR_KEYSTROKE_EVENT
:
5229 Lisp_Object lispy_c
;
5230 int c
= event
->code
;
5232 /* Add in the other modifier bits. We took care of ctrl_modifier
5233 just above, and the shift key was taken care of by the X code,
5234 and applied to control characters by make_ctrl_char. */
5235 c
|= (event
->modifiers
5236 & (meta_modifier
| alt_modifier
5237 | hyper_modifier
| super_modifier
| ctrl_modifier
));
5238 /* What about the `shift' modifier ? */
5239 button_down_time
= 0;
5240 XSETFASTINT (lispy_c
, c
);
5244 /* A function key. The symbol may need to have modifier prefixes
5246 case NON_ASCII_KEYSTROKE_EVENT
:
5247 button_down_time
= 0;
5249 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
5250 if (event
->code
== lispy_accent_codes
[i
])
5251 return modify_event_symbol (i
,
5253 Qfunction_key
, Qnil
,
5254 lispy_accent_keys
, &accent_key_syms
,
5255 (sizeof (lispy_accent_keys
)
5256 / sizeof (lispy_accent_keys
[0])));
5260 if (event
->code
>= 0x400 && event
->code
< 0x500)
5261 return modify_event_symbol (event
->code
- 0x400,
5262 event
->modifiers
& ~shift_modifier
,
5263 Qfunction_key
, Qnil
,
5264 lispy_kana_keys
, &func_key_syms
,
5265 (sizeof (lispy_kana_keys
)
5266 / sizeof (lispy_kana_keys
[0])));
5267 #endif /* XK_kana_A */
5270 #ifdef ISO_FUNCTION_KEY_OFFSET
5271 if (event
->code
< FUNCTION_KEY_OFFSET
5272 && event
->code
>= ISO_FUNCTION_KEY_OFFSET
)
5273 return modify_event_symbol (event
->code
- ISO_FUNCTION_KEY_OFFSET
,
5275 Qfunction_key
, Qnil
,
5276 iso_lispy_function_keys
, &func_key_syms
,
5277 (sizeof (iso_lispy_function_keys
)
5278 / sizeof (iso_lispy_function_keys
[0])));
5281 /* Handle system-specific or unknown keysyms. */
5282 if (event
->code
& (1 << 28)
5283 || event
->code
- FUNCTION_KEY_OFFSET
< 0
5284 || (event
->code
- FUNCTION_KEY_OFFSET
5285 >= sizeof lispy_function_keys
/ sizeof *lispy_function_keys
)
5286 || !lispy_function_keys
[event
->code
- FUNCTION_KEY_OFFSET
])
5288 /* We need to use an alist rather than a vector as the cache
5289 since we can't make a vector long enuf. */
5290 if (NILP (current_kboard
->system_key_syms
))
5291 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
5292 return modify_event_symbol (event
->code
,
5295 current_kboard
->Vsystem_key_alist
,
5296 0, ¤t_kboard
->system_key_syms
,
5300 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
5302 Qfunction_key
, Qnil
,
5303 lispy_function_keys
, &func_key_syms
,
5304 (sizeof (lispy_function_keys
)
5305 / sizeof (lispy_function_keys
[0])));
5308 /* A mouse click. Figure out where it is, decide whether it's
5309 a press, click or drag, and build the appropriate structure. */
5310 case MOUSE_CLICK_EVENT
:
5311 #ifndef USE_TOOLKIT_SCROLL_BARS
5312 case SCROLL_BAR_CLICK_EVENT
:
5315 int button
= event
->code
;
5317 Lisp_Object position
;
5318 Lisp_Object
*start_pos_ptr
;
5319 Lisp_Object start_pos
;
5323 /* Build the position as appropriate for this mouse click. */
5324 if (event
->kind
== MOUSE_CLICK_EVENT
)
5326 struct frame
*f
= XFRAME (event
->frame_or_window
);
5327 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5331 /* Ignore mouse events that were made on frame that
5332 have been deleted. */
5333 if (! FRAME_LIVE_P (f
))
5336 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5337 /* EVENT->x and EVENT->y are frame-relative pixel
5338 coordinates at this place. Under old redisplay, COLUMN
5339 and ROW are set to frame relative glyph coordinates
5340 which are then used to determine whether this click is
5341 in a menu (non-toolkit version). */
5342 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
5343 &column
, &row
, NULL
, 1);
5345 /* In the non-toolkit version, clicks on the menu bar
5346 are ordinary button events in the event buffer.
5347 Distinguish them, and invoke the menu.
5349 (In the toolkit version, the toolkit handles the menu bar
5350 and Emacs doesn't know about it until after the user
5351 makes a selection.) */
5352 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
5353 && (event
->modifiers
& down_modifier
))
5355 Lisp_Object items
, item
;
5360 /* Activate the menu bar on the down event. If the
5361 up event comes in before the menu code can deal with it,
5363 if (! (event
->modifiers
& down_modifier
))
5367 /* Find the menu bar item under `column'. */
5369 items
= FRAME_MENU_BAR_ITEMS (f
);
5370 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 4)
5372 Lisp_Object pos
, string
;
5373 string
= AREF (items
, i
+ 1);
5374 pos
= AREF (items
, i
+ 3);
5377 if (column
>= XINT (pos
)
5378 && column
< XINT (pos
) + SCHARS (string
))
5380 item
= AREF (items
, i
);
5385 /* ELisp manual 2.4b says (x y) are window relative but
5386 code says they are frame-relative. */
5388 = Fcons (event
->frame_or_window
,
5390 Fcons (Fcons (event
->x
, event
->y
),
5391 Fcons (make_number (event
->timestamp
),
5394 return Fcons (item
, Fcons (position
, Qnil
));
5396 #endif /* not USE_X_TOOLKIT && not USE_GTK */
5398 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5401 #ifndef USE_TOOLKIT_SCROLL_BARS
5404 /* It's a scrollbar click. */
5406 Lisp_Object portion_whole
;
5409 window
= event
->frame_or_window
;
5410 portion_whole
= Fcons (event
->x
, event
->y
);
5411 part
= *scroll_bar_parts
[(int) event
->part
];
5415 Fcons (Qvertical_scroll_bar
,
5416 Fcons (portion_whole
,
5417 Fcons (make_number (event
->timestamp
),
5418 Fcons (part
, Qnil
)))));
5420 #endif /* not USE_TOOLKIT_SCROLL_BARS */
5422 if (button
>= ASIZE (button_down_location
))
5424 button_down_location
= larger_vector (button_down_location
,
5426 mouse_syms
= larger_vector (mouse_syms
, button
+ 1, Qnil
);
5429 start_pos_ptr
= &AREF (button_down_location
, button
);
5430 start_pos
= *start_pos_ptr
;
5431 *start_pos_ptr
= Qnil
;
5434 /* On window-system frames, use the value of
5435 double-click-fuzz as is. On other frames, interpret it
5436 as a multiple of 1/8 characters. */
5440 if (WINDOWP (event
->frame_or_window
))
5441 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5442 else if (FRAMEP (event
->frame_or_window
))
5443 f
= XFRAME (event
->frame_or_window
);
5447 if (FRAME_WINDOW_P (f
))
5448 fuzz
= double_click_fuzz
;
5450 fuzz
= double_click_fuzz
/ 8;
5452 is_double
= (button
== last_mouse_button
5453 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5454 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5455 && button_down_time
!= 0
5456 && (EQ (Vdouble_click_time
, Qt
)
5457 || (INTEGERP (Vdouble_click_time
)
5458 && ((int)(event
->timestamp
- button_down_time
)
5459 < XINT (Vdouble_click_time
)))));
5462 last_mouse_button
= button
;
5463 last_mouse_x
= XINT (event
->x
);
5464 last_mouse_y
= XINT (event
->y
);
5466 /* If this is a button press, squirrel away the location, so
5467 we can decide later whether it was a click or a drag. */
5468 if (event
->modifiers
& down_modifier
)
5472 double_click_count
++;
5473 event
->modifiers
|= ((double_click_count
> 2)
5478 double_click_count
= 1;
5479 button_down_time
= event
->timestamp
;
5480 *start_pos_ptr
= Fcopy_alist (position
);
5483 /* Now we're releasing a button - check the co-ordinates to
5484 see if this was a click or a drag. */
5485 else if (event
->modifiers
& up_modifier
)
5487 /* If we did not see a down before this up, ignore the up.
5488 Probably this happened because the down event chose a
5489 menu item. It would be an annoyance to treat the
5490 release of the button that chose the menu item as a
5493 if (!CONSP (start_pos
))
5496 event
->modifiers
&= ~up_modifier
;
5497 #if 0 /* Formerly we treated an up with no down as a click event. */
5498 if (!CONSP (start_pos
))
5499 event
->modifiers
|= click_modifier
;
5504 EMACS_INT xdiff
= double_click_fuzz
, ydiff
= double_click_fuzz
;
5506 /* The third element of every position
5507 should be the (x,y) pair. */
5508 down
= Fcar (Fcdr (Fcdr (start_pos
)));
5510 && INTEGERP (XCAR (down
)) && INTEGERP (XCDR (down
)))
5512 xdiff
= XFASTINT (event
->x
) - XFASTINT (XCAR (down
));
5513 ydiff
= XFASTINT (event
->y
) - XFASTINT (XCDR (down
));
5516 if (xdiff
< double_click_fuzz
&& xdiff
> - double_click_fuzz
5517 && ydiff
< double_click_fuzz
5518 && ydiff
> - double_click_fuzz
)
5519 /* Mouse hasn't moved (much). */
5520 event
->modifiers
|= click_modifier
;
5523 button_down_time
= 0;
5524 event
->modifiers
|= drag_modifier
;
5527 /* Don't check is_double; treat this as multiple
5528 if the down-event was multiple. */
5529 if (double_click_count
> 1)
5530 event
->modifiers
|= ((double_click_count
> 2)
5536 /* Every mouse event should either have the down_modifier or
5537 the up_modifier set. */
5541 /* Get the symbol we should use for the mouse click. */
5544 head
= modify_event_symbol (button
,
5546 Qmouse_click
, Vlispy_mouse_stem
,
5549 XVECTOR (mouse_syms
)->size
);
5550 if (event
->modifiers
& drag_modifier
)
5555 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
5558 Fcons (make_number (double_click_count
),
5569 Lisp_Object position
;
5572 /* Build the position as appropriate for this mouse click. */
5573 struct frame
*f
= XFRAME (event
->frame_or_window
);
5575 /* Ignore wheel events that were made on frame that have been
5577 if (! FRAME_LIVE_P (f
))
5580 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5583 /* Set double or triple modifiers to indicate the wheel speed. */
5585 /* On window-system frames, use the value of
5586 double-click-fuzz as is. On other frames, interpret it
5587 as a multiple of 1/8 characters. */
5592 if (WINDOWP (event
->frame_or_window
))
5593 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5594 else if (FRAMEP (event
->frame_or_window
))
5595 f
= XFRAME (event
->frame_or_window
);
5599 if (FRAME_WINDOW_P (f
))
5600 fuzz
= double_click_fuzz
;
5602 fuzz
= double_click_fuzz
/ 8;
5604 is_double
= (last_mouse_button
< 0
5605 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5606 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5607 && button_down_time
!= 0
5608 && (EQ (Vdouble_click_time
, Qt
)
5609 || (INTEGERP (Vdouble_click_time
)
5610 && ((int)(event
->timestamp
- button_down_time
)
5611 < XINT (Vdouble_click_time
)))));
5614 double_click_count
++;
5615 event
->modifiers
|= ((double_click_count
> 2)
5621 double_click_count
= 1;
5622 event
->modifiers
|= click_modifier
;
5625 button_down_time
= event
->timestamp
;
5626 /* Use a negative value to distinguish wheel from mouse button. */
5627 last_mouse_button
= -1;
5628 last_mouse_x
= XINT (event
->x
);
5629 last_mouse_y
= XINT (event
->y
);
5635 if (event
->modifiers
& up_modifier
)
5637 /* Emit a wheel-up event. */
5638 event
->modifiers
&= ~up_modifier
;
5641 else if (event
->modifiers
& down_modifier
)
5643 /* Emit a wheel-down event. */
5644 event
->modifiers
&= ~down_modifier
;
5648 /* Every wheel event should either have the down_modifier or
5649 the up_modifier set. */
5652 /* Get the symbol we should use for the wheel event. */
5653 head
= modify_event_symbol (symbol_num
,
5659 ASIZE (wheel_syms
));
5662 if (event
->modifiers
& (double_modifier
| triple_modifier
))
5665 Fcons (make_number (double_click_count
),
5674 #ifdef USE_TOOLKIT_SCROLL_BARS
5676 /* We don't have down and up events if using toolkit scroll bars,
5677 so make this always a click event. Store in the `part' of
5678 the Lisp event a symbol which maps to the following actions:
5680 `above_handle' page up
5681 `below_handle' page down
5685 `bottom' bottom of buffer
5686 `handle' thumb has been dragged.
5687 `end-scroll' end of interaction with scroll bar
5689 The incoming input_event contains in its `part' member an
5690 index of type `enum scroll_bar_part' which we can use as an
5691 index in scroll_bar_parts to get the appropriate symbol. */
5693 case SCROLL_BAR_CLICK_EVENT
:
5695 Lisp_Object position
, head
, window
, portion_whole
, part
;
5697 window
= event
->frame_or_window
;
5698 portion_whole
= Fcons (event
->x
, event
->y
);
5699 part
= *scroll_bar_parts
[(int) event
->part
];
5703 Fcons (Qvertical_scroll_bar
,
5704 Fcons (portion_whole
,
5705 Fcons (make_number (event
->timestamp
),
5706 Fcons (part
, Qnil
)))));
5708 /* Always treat scroll bar events as clicks. */
5709 event
->modifiers
|= click_modifier
;
5710 event
->modifiers
&= ~up_modifier
;
5712 if (event
->code
>= ASIZE (mouse_syms
))
5713 mouse_syms
= larger_vector (mouse_syms
, event
->code
+ 1, Qnil
);
5715 /* Get the symbol we should use for the mouse click. */
5716 head
= modify_event_symbol (event
->code
,
5721 XVECTOR (mouse_syms
)->size
);
5722 return Fcons (head
, Fcons (position
, Qnil
));
5725 #endif /* USE_TOOLKIT_SCROLL_BARS */
5728 case W32_SCROLL_BAR_CLICK_EVENT
:
5730 int button
= event
->code
;
5732 Lisp_Object position
;
5733 Lisp_Object
*start_pos_ptr
;
5734 Lisp_Object start_pos
;
5738 Lisp_Object portion_whole
;
5741 window
= event
->frame_or_window
;
5742 portion_whole
= Fcons (event
->x
, event
->y
);
5743 part
= *scroll_bar_parts
[(int) event
->part
];
5747 Fcons (Qvertical_scroll_bar
,
5748 Fcons (portion_whole
,
5749 Fcons (make_number (event
->timestamp
),
5750 Fcons (part
, Qnil
)))));
5753 /* Always treat W32 scroll bar events as clicks. */
5754 event
->modifiers
|= click_modifier
;
5757 /* Get the symbol we should use for the mouse click. */
5760 head
= modify_event_symbol (button
,
5765 XVECTOR (mouse_syms
)->size
);
5771 #endif /* WINDOWSNT */
5773 case DRAG_N_DROP_EVENT
:
5776 Lisp_Object head
, position
;
5779 /* The frame_or_window field should be a cons of the frame in
5780 which the event occurred and a list of the filenames
5782 if (! CONSP (event
->frame_or_window
))
5785 f
= XFRAME (XCAR (event
->frame_or_window
));
5786 files
= XCDR (event
->frame_or_window
);
5788 /* Ignore mouse events that were made on frames that
5789 have been deleted. */
5790 if (! FRAME_LIVE_P (f
))
5793 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5796 head
= modify_event_symbol (0, event
->modifiers
,
5798 lispy_drag_n_drop_names
,
5799 &drag_n_drop_syms
, 1);
5805 #endif /* HAVE_MOUSE */
5807 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
5808 || defined (USE_GTK)
5809 case MENU_BAR_EVENT
:
5810 if (EQ (event
->arg
, event
->frame_or_window
))
5811 /* This is the prefix key. We translate this to
5812 `(menu_bar)' because the code in keyboard.c for menu
5813 events, which we use, relies on this. */
5814 return Fcons (Qmenu_bar
, Qnil
);
5818 case SELECT_WINDOW_EVENT
:
5819 /* Make an event (select-window (WINDOW)). */
5820 return Fcons (Qselect_window
,
5821 Fcons (Fcons (event
->frame_or_window
, Qnil
),
5824 case TOOL_BAR_EVENT
:
5825 if (EQ (event
->arg
, event
->frame_or_window
))
5826 /* This is the prefix key. We translate this to
5827 `(tool_bar)' because the code in keyboard.c for tool bar
5828 events, which we use, relies on this. */
5829 return Fcons (Qtool_bar
, Qnil
);
5830 else if (SYMBOLP (event
->arg
))
5831 return apply_modifiers (event
->modifiers
, event
->arg
);
5834 case USER_SIGNAL_EVENT
:
5835 /* A user signal. */
5836 return *lispy_user_signals
[event
->code
];
5838 case SAVE_SESSION_EVENT
:
5839 return Qsave_session
;
5841 /* The 'kind' field of the event is something we don't recognize. */
5850 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
5852 Lisp_Object bar_window
;
5853 enum scroll_bar_part part
;
5857 /* Is it a scroll bar movement? */
5858 if (frame
&& ! NILP (bar_window
))
5860 Lisp_Object part_sym
;
5862 part_sym
= *scroll_bar_parts
[(int) part
];
5863 return Fcons (Qscroll_bar_movement
,
5864 (Fcons (Fcons (bar_window
,
5865 Fcons (Qvertical_scroll_bar
,
5866 Fcons (Fcons (x
, y
),
5867 Fcons (make_number (time
),
5873 /* Or is it an ordinary mouse movement? */
5876 Lisp_Object position
;
5878 position
= make_lispy_position (frame
, &x
, &y
, time
);
5880 return Fcons (Qmouse_movement
,
5886 #endif /* HAVE_MOUSE */
5888 /* Construct a switch frame event. */
5890 make_lispy_switch_frame (frame
)
5893 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
5896 /* Manipulating modifiers. */
5898 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
5900 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
5901 SYMBOL's name of the end of the modifiers; the string from this
5902 position is the unmodified symbol name.
5904 This doesn't use any caches. */
5907 parse_modifiers_uncached (symbol
, modifier_end
)
5915 CHECK_SYMBOL (symbol
);
5918 name
= SYMBOL_NAME (symbol
);
5920 for (i
= 0; i
+2 <= SBYTES (name
); )
5922 int this_mod_end
= 0;
5925 /* See if the name continues with a modifier word.
5926 Check that the word appears, but don't check what follows it.
5927 Set this_mod and this_mod_end to record what we find. */
5929 switch (SREF (name
, i
))
5931 #define SINGLE_LETTER_MOD(BIT) \
5932 (this_mod_end = i + 1, this_mod = BIT)
5935 SINGLE_LETTER_MOD (alt_modifier
);
5939 SINGLE_LETTER_MOD (ctrl_modifier
);
5943 SINGLE_LETTER_MOD (hyper_modifier
);
5947 SINGLE_LETTER_MOD (meta_modifier
);
5951 SINGLE_LETTER_MOD (shift_modifier
);
5955 SINGLE_LETTER_MOD (super_modifier
);
5958 #undef SINGLE_LETTER_MOD
5960 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
5961 if (i + LEN + 1 <= SBYTES (name) \
5962 && ! strncmp (SDATA (name) + i, NAME, LEN)) \
5964 this_mod_end = i + LEN; \
5969 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
5970 MULTI_LETTER_MOD (down_modifier
, "down", 4);
5971 MULTI_LETTER_MOD (double_modifier
, "double", 6);
5975 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
5977 #undef MULTI_LETTER_MOD
5981 /* If we found no modifier, stop looking for them. */
5982 if (this_mod_end
== 0)
5985 /* Check there is a dash after the modifier, so that it
5986 really is a modifier. */
5987 if (this_mod_end
>= SBYTES (name
)
5988 || SREF (name
, this_mod_end
) != '-')
5991 /* This modifier is real; look for another. */
5992 modifiers
|= this_mod
;
5993 i
= this_mod_end
+ 1;
5996 /* Should we include the `click' modifier? */
5997 if (! (modifiers
& (down_modifier
| drag_modifier
5998 | double_modifier
| triple_modifier
))
5999 && i
+ 7 == SBYTES (name
)
6000 && strncmp (SDATA (name
) + i
, "mouse-", 6) == 0
6001 && ('0' <= SREF (name
, i
+ 6) && SREF (name
, i
+ 6) <= '9'))
6002 modifiers
|= click_modifier
;
6010 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
6011 prepended to the string BASE[0..BASE_LEN-1].
6012 This doesn't use any caches. */
6014 apply_modifiers_uncached (modifiers
, base
, base_len
, base_len_byte
)
6017 int base_len
, base_len_byte
;
6019 /* Since BASE could contain nulls, we can't use intern here; we have
6020 to use Fintern, which expects a genuine Lisp_String, and keeps a
6023 = (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
6029 /* Only the event queue may use the `up' modifier; it should always
6030 be turned into a click or drag event before presented to lisp code. */
6031 if (modifiers
& up_modifier
)
6034 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
6035 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
6036 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
6037 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
6038 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
6039 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
6040 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
6041 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
6042 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
6043 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
6044 /* The click modifier is denoted by the absence of other modifiers. */
6048 mod_len
= p
- new_mods
;
6052 Lisp_Object new_name
;
6054 new_name
= make_uninit_multibyte_string (mod_len
+ base_len
,
6055 mod_len
+ base_len_byte
);
6056 bcopy (new_mods
, SDATA (new_name
), mod_len
);
6057 bcopy (base
, SDATA (new_name
) + mod_len
, base_len_byte
);
6059 return Fintern (new_name
, Qnil
);
6064 static char *modifier_names
[] =
6066 "up", "down", "drag", "click", "double", "triple", 0, 0,
6067 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
6068 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
6070 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
6072 static Lisp_Object modifier_symbols
;
6074 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
6076 lispy_modifier_list (modifiers
)
6079 Lisp_Object modifier_list
;
6082 modifier_list
= Qnil
;
6083 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
6084 if (modifiers
& (1<<i
))
6085 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
6088 return modifier_list
;
6092 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
6093 where UNMODIFIED is the unmodified form of SYMBOL,
6094 MASK is the set of modifiers present in SYMBOL's name.
6095 This is similar to parse_modifiers_uncached, but uses the cache in
6096 SYMBOL's Qevent_symbol_element_mask property, and maintains the
6097 Qevent_symbol_elements property. */
6100 parse_modifiers (symbol
)
6103 Lisp_Object elements
;
6105 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
6106 if (CONSP (elements
))
6111 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
6112 Lisp_Object unmodified
;
6115 unmodified
= Fintern (make_string (SDATA (SYMBOL_NAME (symbol
)) + end
,
6116 SBYTES (SYMBOL_NAME (symbol
)) - end
),
6119 if (modifiers
& ~INTMASK
)
6121 XSETFASTINT (mask
, modifiers
);
6122 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
6124 /* Cache the parsing results on SYMBOL. */
6125 Fput (symbol
, Qevent_symbol_element_mask
,
6127 Fput (symbol
, Qevent_symbol_elements
,
6128 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
6130 /* Since we know that SYMBOL is modifiers applied to unmodified,
6131 it would be nice to put that in unmodified's cache.
6132 But we can't, since we're not sure that parse_modifiers is
6139 /* Apply the modifiers MODIFIERS to the symbol BASE.
6140 BASE must be unmodified.
6142 This is like apply_modifiers_uncached, but uses BASE's
6143 Qmodifier_cache property, if present. It also builds
6144 Qevent_symbol_elements properties, since it has that info anyway.
6146 apply_modifiers copies the value of BASE's Qevent_kind property to
6147 the modified symbol. */
6149 apply_modifiers (modifiers
, base
)
6153 Lisp_Object cache
, index
, entry
, new_symbol
;
6155 /* Mask out upper bits. We don't know where this value's been. */
6156 modifiers
&= INTMASK
;
6158 /* The click modifier never figures into cache indices. */
6159 cache
= Fget (base
, Qmodifier_cache
);
6160 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
6161 entry
= assq_no_quit (index
, cache
);
6164 new_symbol
= XCDR (entry
);
6167 /* We have to create the symbol ourselves. */
6168 new_symbol
= apply_modifiers_uncached (modifiers
,
6169 SDATA (SYMBOL_NAME (base
)),
6170 SCHARS (SYMBOL_NAME (base
)),
6171 SBYTES (SYMBOL_NAME (base
)));
6173 /* Add the new symbol to the base's cache. */
6174 entry
= Fcons (index
, new_symbol
);
6175 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
6177 /* We have the parsing info now for free, so we could add it to
6179 XSETFASTINT (index, modifiers);
6180 Fput (new_symbol, Qevent_symbol_element_mask,
6181 Fcons (base, Fcons (index, Qnil)));
6182 Fput (new_symbol, Qevent_symbol_elements,
6183 Fcons (base, lispy_modifier_list (modifiers)));
6184 Sadly, this is only correct if `base' is indeed a base event,
6185 which is not necessarily the case. -stef */
6188 /* Make sure this symbol is of the same kind as BASE.
6190 You'd think we could just set this once and for all when we
6191 intern the symbol above, but reorder_modifiers may call us when
6192 BASE's property isn't set right; we can't assume that just
6193 because it has a Qmodifier_cache property it must have its
6194 Qevent_kind set right as well. */
6195 if (NILP (Fget (new_symbol
, Qevent_kind
)))
6199 kind
= Fget (base
, Qevent_kind
);
6201 Fput (new_symbol
, Qevent_kind
, kind
);
6208 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
6209 return a symbol with the modifiers placed in the canonical order.
6210 Canonical order is alphabetical, except for down and drag, which
6211 always come last. The 'click' modifier is never written out.
6213 Fdefine_key calls this to make sure that (for example) C-M-foo
6214 and M-C-foo end up being equivalent in the keymap. */
6217 reorder_modifiers (symbol
)
6220 /* It's hopefully okay to write the code this way, since everything
6221 will soon be in caches, and no consing will be done at all. */
6224 parsed
= parse_modifiers (symbol
);
6225 return apply_modifiers ((int) XINT (XCAR (XCDR (parsed
))),
6230 /* For handling events, we often want to produce a symbol whose name
6231 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
6232 to some base, like the name of a function key or mouse button.
6233 modify_event_symbol produces symbols of this sort.
6235 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
6236 is the name of the i'th symbol. TABLE_SIZE is the number of elements
6239 Alternatively, NAME_ALIST_OR_STEM is either an alist mapping codes
6240 into symbol names, or a string specifying a name stem used to
6241 construct a symbol name or the form `STEM-N', where N is the decimal
6242 representation of SYMBOL_NUM. NAME_ALIST_OR_STEM is used if it is
6243 non-nil; otherwise NAME_TABLE is used.
6245 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
6246 persist between calls to modify_event_symbol that it can use to
6247 store a cache of the symbols it's generated for this NAME_TABLE
6248 before. The object stored there may be a vector or an alist.
6250 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
6252 MODIFIERS is a set of modifier bits (as given in struct input_events)
6253 whose prefixes should be applied to the symbol name.
6255 SYMBOL_KIND is the value to be placed in the event_kind property of
6256 the returned symbol.
6258 The symbols we create are supposed to have an
6259 `event-symbol-elements' property, which lists the modifiers present
6260 in the symbol's name. */
6263 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist_or_stem
,
6264 name_table
, symbol_table
, table_size
)
6267 Lisp_Object symbol_kind
;
6268 Lisp_Object name_alist_or_stem
;
6270 Lisp_Object
*symbol_table
;
6271 unsigned int table_size
;
6274 Lisp_Object symbol_int
;
6276 /* Get rid of the "vendor-specific" bit here. */
6277 XSETINT (symbol_int
, symbol_num
& 0xffffff);
6279 /* Is this a request for a valid symbol? */
6280 if (symbol_num
< 0 || symbol_num
>= table_size
)
6283 if (CONSP (*symbol_table
))
6284 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
6286 /* If *symbol_table doesn't seem to be initialized properly, fix that.
6287 *symbol_table should be a lisp vector TABLE_SIZE elements long,
6288 where the Nth element is the symbol for NAME_TABLE[N], or nil if
6289 we've never used that symbol before. */
6292 if (! VECTORP (*symbol_table
)
6293 || XVECTOR (*symbol_table
)->size
!= table_size
)
6297 XSETFASTINT (size
, table_size
);
6298 *symbol_table
= Fmake_vector (size
, Qnil
);
6301 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
6304 /* Have we already used this symbol before? */
6307 /* No; let's create it. */
6308 if (CONSP (name_alist_or_stem
))
6309 value
= Fcdr_safe (Fassq (symbol_int
, name_alist_or_stem
));
6310 else if (STRINGP (name_alist_or_stem
))
6312 int len
= SBYTES (name_alist_or_stem
);
6313 char *buf
= (char *) alloca (len
+ 50);
6314 sprintf (buf
, "%s-%ld", SDATA (name_alist_or_stem
),
6315 (long) XINT (symbol_int
) + 1);
6316 value
= intern (buf
);
6318 else if (name_table
!= 0 && name_table
[symbol_num
])
6319 value
= intern (name_table
[symbol_num
]);
6321 #ifdef HAVE_WINDOW_SYSTEM
6324 char *name
= x_get_keysym_name (symbol_num
);
6326 value
= intern (name
);
6333 sprintf (buf
, "key-%d", symbol_num
);
6334 value
= intern (buf
);
6337 if (CONSP (*symbol_table
))
6338 *symbol_table
= Fcons (Fcons (symbol_int
, value
), *symbol_table
);
6340 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
6342 /* Fill in the cache entries for this symbol; this also
6343 builds the Qevent_symbol_elements property, which the user
6345 apply_modifiers (modifiers
& click_modifier
, value
);
6346 Fput (value
, Qevent_kind
, symbol_kind
);
6349 /* Apply modifiers to that symbol. */
6350 return apply_modifiers (modifiers
, value
);
6353 /* Convert a list that represents an event type,
6354 such as (ctrl meta backspace), into the usual representation of that
6355 event type as a number or a symbol. */
6357 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
6358 doc
: /* Convert the event description list EVENT-DESC to an event type.
6359 EVENT-DESC should contain one base event type (a character or symbol)
6360 and zero or more modifier names (control, meta, hyper, super, shift, alt,
6361 drag, down, double or triple). The base must be last.
6362 The return value is an event type (a character or symbol) which
6363 has the same base event type and all the specified modifiers. */)
6365 Lisp_Object event_desc
;
6373 while (CONSP (rest
))
6381 /* Given a symbol, see if it is a modifier name. */
6382 if (SYMBOLP (elt
) && CONSP (rest
))
6383 this = parse_solitary_modifier (elt
);
6387 else if (!NILP (base
))
6388 error ("Two bases given in one event");
6394 /* Let the symbol A refer to the character A. */
6395 if (SYMBOLP (base
) && SCHARS (SYMBOL_NAME (base
)) == 1)
6396 XSETINT (base
, SREF (SYMBOL_NAME (base
), 0));
6398 if (INTEGERP (base
))
6400 /* Turn (shift a) into A. */
6401 if ((modifiers
& shift_modifier
) != 0
6402 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
6404 XSETINT (base
, XINT (base
) - ('a' - 'A'));
6405 modifiers
&= ~shift_modifier
;
6408 /* Turn (control a) into C-a. */
6409 if (modifiers
& ctrl_modifier
)
6410 return make_number ((modifiers
& ~ctrl_modifier
)
6411 | make_ctrl_char (XINT (base
)));
6413 return make_number (modifiers
| XINT (base
));
6415 else if (SYMBOLP (base
))
6416 return apply_modifiers (modifiers
, base
);
6419 error ("Invalid base event");
6424 /* Try to recognize SYMBOL as a modifier name.
6425 Return the modifier flag bit, or 0 if not recognized. */
6428 parse_solitary_modifier (symbol
)
6431 Lisp_Object name
= SYMBOL_NAME (symbol
);
6433 switch (SREF (name
, 0))
6435 #define SINGLE_LETTER_MOD(BIT) \
6436 if (SBYTES (name) == 1) \
6439 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
6440 if (LEN == SBYTES (name) \
6441 && ! strncmp (SDATA (name), NAME, LEN)) \
6445 SINGLE_LETTER_MOD (alt_modifier
);
6449 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
6453 SINGLE_LETTER_MOD (ctrl_modifier
);
6457 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
6458 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
6462 SINGLE_LETTER_MOD (hyper_modifier
);
6466 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
6470 SINGLE_LETTER_MOD (meta_modifier
);
6474 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
6478 SINGLE_LETTER_MOD (shift_modifier
);
6482 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
6483 MULTI_LETTER_MOD (super_modifier
, "super", 5);
6484 SINGLE_LETTER_MOD (super_modifier
);
6488 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
6489 MULTI_LETTER_MOD (down_modifier
, "down", 4);
6490 MULTI_LETTER_MOD (double_modifier
, "double", 6);
6494 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
6497 #undef SINGLE_LETTER_MOD
6498 #undef MULTI_LETTER_MOD
6504 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
6505 Such a list is not valid as an event,
6506 but it can be a Lucid-style event type list. */
6509 lucid_event_type_list_p (object
)
6514 if (! CONSP (object
))
6517 if (EQ (XCAR (object
), Qhelp_echo
)
6518 || EQ (XCAR (object
), Qvertical_line
)
6519 || EQ (XCAR (object
), Qmode_line
)
6520 || EQ (XCAR (object
), Qheader_line
))
6523 for (tail
= object
; CONSP (tail
); tail
= XCDR (tail
))
6527 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
6534 /* Store into *addr a value nonzero if terminal input chars are available.
6535 Serves the purpose of ioctl (0, FIONREAD, addr)
6536 but works even if FIONREAD does not exist.
6537 (In fact, this may actually read some input.)
6539 If READABLE_EVENTS_DO_TIMERS_NOW is set in FLAGS, actually run
6540 timer events that are ripe.
6541 If READABLE_EVENTS_FILTER_EVENTS is set in FLAGS, ignore internal
6542 events (FOCUS_IN_EVENT).
6543 If READABLE_EVENTS_IGNORE_SQUEEZABLES is set in FLAGS, ignore mouse
6544 movements and toolkit scroll bar thumb drags. */
6547 get_input_pending (addr
, flags
)
6551 /* First of all, have we already counted some input? */
6552 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6554 /* If input is being read as it arrives, and we have none, there is none. */
6555 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
6558 /* Try to read some input and see how much we get. */
6560 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6563 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
6566 gobble_input (expected
)
6571 if (interrupt_input
)
6574 mask
= sigblock (sigmask (SIGIO
));
6575 read_avail_input (expected
);
6579 #ifdef POLL_FOR_INPUT
6580 if (read_socket_hook
&& !interrupt_input
&& poll_suppress_count
== 0)
6583 mask
= sigblock (sigmask (SIGALRM
));
6584 read_avail_input (expected
);
6590 read_avail_input (expected
);
6594 /* Put a BUFFER_SWITCH_EVENT in the buffer
6595 so that read_key_sequence will notice the new current buffer. */
6598 record_asynch_buffer_change ()
6600 struct input_event event
;
6604 event
.kind
= BUFFER_SWITCH_EVENT
;
6605 event
.frame_or_window
= Qnil
;
6609 /* We don't need a buffer-switch event unless Emacs is waiting for input.
6610 The purpose of the event is to make read_key_sequence look up the
6611 keymaps again. If we aren't in read_key_sequence, we don't need one,
6612 and the event could cause trouble by messing up (input-pending-p). */
6613 tem
= Fwaiting_for_user_input_p ();
6617 /* We never need these events if we have no asynchronous subprocesses. */
6621 /* Make sure no interrupt happens while storing the event. */
6623 if (interrupt_input
)
6626 mask
= sigblock (sigmask (SIGIO
));
6627 kbd_buffer_store_event (&event
);
6634 kbd_buffer_store_event (&event
);
6641 /* Read any terminal input already buffered up by the system
6642 into the kbd_buffer, but do not wait.
6644 EXPECTED should be nonzero if the caller knows there is some input.
6646 Except on VMS, all input is read by this function.
6647 If interrupt_input is nonzero, this function MUST be called
6648 only when SIGIO is blocked.
6650 Returns the number of keyboard chars read, or -1 meaning
6651 this is a bad time to try to read input. */
6654 read_avail_input (expected
)
6660 if (read_socket_hook
)
6663 struct input_event hold_quit
;
6665 EVENT_INIT (hold_quit
);
6666 hold_quit
.kind
= NO_EVENT
;
6668 /* No need for FIONREAD or fcntl; just say don't wait. */
6669 while (nr
= (*read_socket_hook
) (input_fd
, expected
, &hold_quit
), nr
> 0)
6674 if (hold_quit
.kind
!= NO_EVENT
)
6675 kbd_buffer_store_event (&hold_quit
);
6679 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
6680 the kbd_buffer can really hold. That may prevent loss
6681 of characters on some systems when input is stuffed at us. */
6682 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
6685 /* Determine how many characters we should *try* to read. */
6688 #else /* not WINDOWSNT */
6690 n_to_read
= dos_keysns ();
6693 #else /* not MSDOS */
6695 /* Find out how much input is available. */
6696 if (ioctl (input_fd
, FIONREAD
, &n_to_read
) < 0)
6697 /* Formerly simply reported no input, but that sometimes led to
6698 a failure of Emacs to terminate.
6699 SIGHUP seems appropriate if we can't reach the terminal. */
6700 /* ??? Is it really right to send the signal just to this process
6701 rather than to the whole process group?
6702 Perhaps on systems with FIONREAD Emacs is alone in its group. */
6704 if (! noninteractive
)
6705 kill (getpid (), SIGHUP
);
6711 if (n_to_read
> sizeof cbuf
)
6712 n_to_read
= sizeof cbuf
;
6713 #else /* no FIONREAD */
6714 #if defined (USG) || defined (DGUX) || defined(CYGWIN)
6715 /* Read some input if available, but don't wait. */
6716 n_to_read
= sizeof cbuf
;
6717 fcntl (input_fd
, F_SETFL
, O_NDELAY
);
6722 #endif /* not MSDOS */
6723 #endif /* not WINDOWSNT */
6725 /* Now read; for one reason or another, this will not block.
6726 NREAD is set to the number of chars read. */
6730 cbuf
[0] = dos_keyread ();
6733 nread
= emacs_read (input_fd
, cbuf
, n_to_read
);
6735 /* POSIX infers that processes which are not in the session leader's
6736 process group won't get SIGHUP's at logout time. BSDI adheres to
6737 this part standard and returns -1 from read (0) with errno==EIO
6738 when the control tty is taken away.
6739 Jeffrey Honig <jch@bsdi.com> says this is generally safe. */
6740 if (nread
== -1 && errno
== EIO
)
6742 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
6743 /* The kernel sometimes fails to deliver SIGHUP for ptys.
6744 This looks incorrect, but it isn't, because _BSD causes
6745 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
6746 and that causes a value other than 0 when there is no input. */
6752 /* We used to retry the read if it was interrupted.
6753 But this does the wrong thing when O_NDELAY causes
6754 an EAGAIN error. Does anybody know of a situation
6755 where a retry is actually needed? */
6757 nread
< 0 && (errno
== EAGAIN
6771 #if defined (USG) || defined (DGUX) || defined (CYGWIN)
6772 fcntl (input_fd
, F_SETFL
, 0);
6773 #endif /* USG or DGUX or CYGWIN */
6774 #endif /* no FIONREAD */
6775 for (i
= 0; i
< nread
; i
++)
6777 struct input_event buf
;
6779 buf
.kind
= ASCII_KEYSTROKE_EVENT
;
6781 if (meta_key
== 1 && (cbuf
[i
] & 0x80))
6782 buf
.modifiers
= meta_modifier
;
6787 buf
.frame_or_window
= selected_frame
;
6790 kbd_buffer_store_event (&buf
);
6791 /* Don't look at input that follows a C-g too closely.
6792 This reduces lossage due to autorepeat on C-g. */
6793 if (buf
.kind
== ASCII_KEYSTROKE_EVENT
6794 && buf
.code
== quit_char
)
6801 #endif /* not VMS */
6804 handle_async_input ()
6807 extern int select_alarmed
;
6810 interrupt_input_pending
= 0;
6815 nread
= read_avail_input (1);
6816 /* -1 means it's not ok to read the input now.
6817 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
6818 0 means there was no keyboard input available. */
6823 select_alarmed
= 1; /* Force the select emulator back to life */
6828 #ifdef SIGIO /* for entire page */
6829 /* Note SIGIO has been undef'd if FIONREAD is missing. */
6832 input_available_signal (signo
)
6835 /* Must preserve main program's value of errno. */
6836 int old_errno
= errno
;
6837 #if defined (USG) && !defined (POSIX_SIGNALS)
6838 /* USG systems forget handlers when they are used;
6839 must reestablish each time */
6840 signal (signo
, input_available_signal
);
6848 interrupt_input_pending
= 1;
6850 SIGNAL_THREAD_CHECK (signo
);
6853 if (input_available_clear_time
)
6854 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6857 handle_async_input ();
6867 /* Send ourselves a SIGIO.
6869 This function exists so that the UNBLOCK_INPUT macro in
6870 blockinput.h can have some way to take care of input we put off
6871 dealing with, without assuming that every file which uses
6872 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
6874 reinvoke_input_signal ()
6877 handle_async_input ();
6883 static void menu_bar_item
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
, void*));
6884 static Lisp_Object menu_bar_one_keymap_changed_items
;
6886 /* These variables hold the vector under construction within
6887 menu_bar_items and its subroutines, and the current index
6888 for storing into that vector. */
6889 static Lisp_Object menu_bar_items_vector
;
6890 static int menu_bar_items_index
;
6892 /* Return a vector of menu items for a menu bar, appropriate
6893 to the current buffer. Each item has three elements in the vector:
6896 OLD is an old vector we can optionally reuse, or nil. */
6899 menu_bar_items (old
)
6902 /* The number of keymaps we're scanning right now, and the number of
6903 keymaps we have allocated space for. */
6906 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
6907 in the current keymaps, or nil where it is not a prefix. */
6910 Lisp_Object def
, tail
;
6919 /* In order to build the menus, we need to call the keymap
6920 accessors. They all call QUIT. But this function is called
6921 during redisplay, during which a quit is fatal. So inhibit
6922 quitting while building the menus.
6923 We do this instead of specbind because (1) errors will clear it anyway
6924 and (2) this avoids risk of specpdl overflow. */
6925 oquit
= Vinhibit_quit
;
6929 menu_bar_items_vector
= old
;
6931 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
6932 menu_bar_items_index
= 0;
6934 /* Build our list of keymaps.
6935 If we recognize a function key and replace its escape sequence in
6936 keybuf with its symbol, or if the sequence starts with a mouse
6937 click and we need to switch buffers, we jump back here to rebuild
6938 the initial keymaps from the current buffer. */
6942 /* Should overriding-terminal-local-map and overriding-local-map apply? */
6943 if (!NILP (Voverriding_local_map_menu_flag
))
6945 /* Yes, use them (if non-nil) as well as the global map. */
6946 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
6948 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
6949 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
6950 if (!NILP (Voverriding_local_map
))
6951 maps
[nmaps
++] = Voverriding_local_map
;
6955 /* No, so use major and minor mode keymaps and keymap property.
6956 Note that menu-bar bindings in the local-map and keymap
6957 properties may not work reliable, as they are only
6958 recognized when the menu-bar (or mode-line) is updated,
6959 which does not normally happen after every command. */
6962 nminor
= current_minor_maps (NULL
, &tmaps
);
6963 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
6965 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
6966 maps
[nmaps
++] = tem
;
6967 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
6969 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
6971 maps
[nmaps
++] = current_global_map
;
6974 /* Look up in each map the dummy prefix key `menu-bar'. */
6978 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
6979 if (!NILP (maps
[mapno
]))
6981 def
= get_keymap (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0, 1),
6985 menu_bar_one_keymap_changed_items
= Qnil
;
6986 map_keymap (def
, menu_bar_item
, Qnil
, NULL
, 1);
6990 /* Move to the end those items that should be at the end. */
6992 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCDR (tail
))
6995 int end
= menu_bar_items_index
;
6997 for (i
= 0; i
< end
; i
+= 4)
6998 if (EQ (XCAR (tail
), XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7000 Lisp_Object tem0
, tem1
, tem2
, tem3
;
7001 /* Move the item at index I to the end,
7002 shifting all the others forward. */
7003 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
7004 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
7005 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7006 tem3
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3];
7008 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7009 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7010 (end
- i
- 4) * sizeof (Lisp_Object
));
7011 XVECTOR (menu_bar_items_vector
)->contents
[end
- 4] = tem0
;
7012 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem1
;
7013 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem2
;
7014 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem3
;
7019 /* Add nil, nil, nil, nil at the end. */
7020 i
= menu_bar_items_index
;
7021 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7024 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7025 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7026 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7027 menu_bar_items_vector
= tem
;
7029 /* Add this item. */
7030 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7031 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7032 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7033 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7034 menu_bar_items_index
= i
;
7036 Vinhibit_quit
= oquit
;
7037 return menu_bar_items_vector
;
7040 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
7041 If there's already an item for KEY, add this DEF to it. */
7043 Lisp_Object item_properties
;
7046 menu_bar_item (key
, item
, dummy1
, dummy2
)
7047 Lisp_Object key
, item
, dummy1
;
7050 struct gcpro gcpro1
;
7054 if (EQ (item
, Qundefined
))
7056 /* If a map has an explicit `undefined' as definition,
7057 discard any previously made menu bar item. */
7059 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7060 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7062 if (menu_bar_items_index
> i
+ 4)
7063 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7064 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7065 (menu_bar_items_index
- i
- 4) * sizeof (Lisp_Object
));
7066 menu_bar_items_index
-= 4;
7070 /* If this keymap has already contributed to this KEY,
7071 don't contribute to it a second time. */
7072 tem
= Fmemq (key
, menu_bar_one_keymap_changed_items
);
7073 if (!NILP (tem
) || NILP (item
))
7076 menu_bar_one_keymap_changed_items
7077 = Fcons (key
, menu_bar_one_keymap_changed_items
);
7079 /* We add to menu_bar_one_keymap_changed_items before doing the
7080 parse_menu_item, so that if it turns out it wasn't a menu item,
7081 it still correctly hides any further menu item. */
7083 i
= parse_menu_item (item
, 0, 1);
7088 item
= XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_DEF
];
7090 /* Find any existing item for this KEY. */
7091 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7092 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7095 /* If we did not find this KEY, add it at the end. */
7096 if (i
== menu_bar_items_index
)
7098 /* If vector is too small, get a bigger one. */
7099 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7102 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7103 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7104 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7105 menu_bar_items_vector
= tem
;
7108 /* Add this item. */
7109 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
7110 XVECTOR (menu_bar_items_vector
)->contents
[i
++]
7111 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
7112 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (item
, Qnil
);
7113 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = make_number (0);
7114 menu_bar_items_index
= i
;
7116 /* We did find an item for this KEY. Add ITEM to its list of maps. */
7120 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7121 /* If the new and the old items are not both keymaps,
7122 the lookup will only find `item'. */
7123 item
= Fcons (item
, KEYMAPP (item
) && KEYMAPP (XCAR (old
)) ? old
: Qnil
);
7124 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = item
;
7128 /* This is used as the handler when calling menu_item_eval_property. */
7130 menu_item_eval_property_1 (arg
)
7133 /* If we got a quit from within the menu computation,
7134 quit all the way out of it. This takes care of C-] in the debugger. */
7135 if (CONSP (arg
) && EQ (XCAR (arg
), Qquit
))
7136 Fsignal (Qquit
, Qnil
);
7141 /* Evaluate an expression and return the result (or nil if something
7142 went wrong). Used to evaluate dynamic parts of menu items. */
7144 menu_item_eval_property (sexpr
)
7147 int count
= SPECPDL_INDEX ();
7149 specbind (Qinhibit_redisplay
, Qt
);
7150 val
= internal_condition_case_1 (Feval
, sexpr
, Qerror
,
7151 menu_item_eval_property_1
);
7152 return unbind_to (count
, val
);
7155 /* This function parses a menu item and leaves the result in the
7156 vector item_properties.
7157 ITEM is a key binding, a possible menu item.
7158 If NOTREAL is nonzero, only check for equivalent key bindings, don't
7159 evaluate dynamic expressions in the menu item.
7160 INMENUBAR is > 0 when this is considered for an entry in a menu bar
7162 INMENUBAR is < 0 when this is considered for an entry in a keyboard menu.
7163 parse_menu_item returns true if the item is a menu item and false
7167 parse_menu_item (item
, notreal
, inmenubar
)
7169 int notreal
, inmenubar
;
7171 Lisp_Object def
, tem
, item_string
, start
;
7172 Lisp_Object cachelist
;
7174 Lisp_Object keyhint
;
7185 /* Create item_properties vector if necessary. */
7186 if (NILP (item_properties
))
7188 = Fmake_vector (make_number (ITEM_PROPERTY_ENABLE
+ 1), Qnil
);
7190 /* Initialize optional entries. */
7191 for (i
= ITEM_PROPERTY_DEF
; i
< ITEM_PROPERTY_ENABLE
; i
++)
7192 AREF (item_properties
, i
) = Qnil
;
7193 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = Qt
;
7195 /* Save the item here to protect it from GC. */
7196 AREF (item_properties
, ITEM_PROPERTY_ITEM
) = item
;
7198 item_string
= XCAR (item
);
7202 if (STRINGP (item_string
))
7204 /* Old format menu item. */
7205 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7207 /* Maybe help string. */
7208 if (CONSP (item
) && STRINGP (XCAR (item
)))
7210 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7215 /* Maybe key binding cache. */
7216 if (CONSP (item
) && CONSP (XCAR (item
))
7217 && (NILP (XCAR (XCAR (item
)))
7218 || VECTORP (XCAR (XCAR (item
)))))
7220 cachelist
= XCAR (item
);
7224 /* This is the real definition--the function to run. */
7225 AREF (item_properties
, ITEM_PROPERTY_DEF
) = item
;
7227 /* Get enable property, if any. */
7230 tem
= Fget (item
, Qmenu_enable
);
7232 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7235 else if (EQ (item_string
, Qmenu_item
) && CONSP (item
))
7237 /* New format menu item. */
7238 AREF (item_properties
, ITEM_PROPERTY_NAME
) = XCAR (item
);
7239 start
= XCDR (item
);
7242 /* We have a real binding. */
7243 AREF (item_properties
, ITEM_PROPERTY_DEF
) = XCAR (start
);
7245 item
= XCDR (start
);
7246 /* Is there a cache list with key equivalences. */
7247 if (CONSP (item
) && CONSP (XCAR (item
)))
7249 cachelist
= XCAR (item
);
7253 /* Parse properties. */
7254 while (CONSP (item
) && CONSP (XCDR (item
)))
7259 if (EQ (tem
, QCenable
))
7260 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = XCAR (item
);
7261 else if (EQ (tem
, QCvisible
) && !notreal
)
7263 /* If got a visible property and that evaluates to nil
7264 then ignore this item. */
7265 tem
= menu_item_eval_property (XCAR (item
));
7269 else if (EQ (tem
, QChelp
))
7270 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7271 else if (EQ (tem
, QCfilter
))
7273 else if (EQ (tem
, QCkey_sequence
))
7276 if (NILP (cachelist
)
7277 && (SYMBOLP (tem
) || STRINGP (tem
) || VECTORP (tem
)))
7278 /* Be GC protected. Set keyhint to item instead of tem. */
7281 else if (EQ (tem
, QCkeys
))
7284 if (CONSP (tem
) || (STRINGP (tem
) && NILP (cachelist
)))
7285 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7287 else if (EQ (tem
, QCbutton
) && CONSP (XCAR (item
)))
7292 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7294 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7296 AREF (item_properties
, ITEM_PROPERTY_TYPE
)
7303 else if (inmenubar
|| !NILP (start
))
7307 return 0; /* not a menu item */
7309 /* If item string is not a string, evaluate it to get string.
7310 If we don't get a string, skip this item. */
7311 item_string
= AREF (item_properties
, ITEM_PROPERTY_NAME
);
7312 if (!(STRINGP (item_string
) || notreal
))
7314 item_string
= menu_item_eval_property (item_string
);
7315 if (!STRINGP (item_string
))
7317 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7320 /* If got a filter apply it on definition. */
7321 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7324 def
= menu_item_eval_property (list2 (XCAR (filter
),
7325 list2 (Qquote
, def
)));
7327 AREF (item_properties
, ITEM_PROPERTY_DEF
) = def
;
7330 /* Enable or disable selection of item. */
7331 tem
= AREF (item_properties
, ITEM_PROPERTY_ENABLE
);
7337 tem
= menu_item_eval_property (tem
);
7338 if (inmenubar
&& NILP (tem
))
7339 return 0; /* Ignore disabled items in menu bar. */
7340 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7343 /* If we got no definition, this item is just unselectable text which
7344 is OK in a submenu but not in the menubar. */
7346 return (inmenubar
? 0 : 1);
7348 /* See if this is a separate pane or a submenu. */
7349 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7350 tem
= get_keymap (def
, 0, 1);
7351 /* For a subkeymap, just record its details and exit. */
7354 AREF (item_properties
, ITEM_PROPERTY_MAP
) = tem
;
7355 AREF (item_properties
, ITEM_PROPERTY_DEF
) = tem
;
7359 /* At the top level in the menu bar, do likewise for commands also.
7360 The menu bar does not display equivalent key bindings anyway.
7361 ITEM_PROPERTY_DEF is already set up properly. */
7365 /* This is a command. See if there is an equivalent key binding. */
7366 if (NILP (cachelist
))
7368 /* We have to create a cachelist. */
7369 CHECK_IMPURE (start
);
7370 XSETCDR (start
, Fcons (Fcons (Qnil
, Qnil
), XCDR (start
)));
7371 cachelist
= XCAR (XCDR (start
));
7373 tem
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7374 if (!NILP (keyhint
))
7376 XSETCAR (cachelist
, XCAR (keyhint
));
7379 else if (STRINGP (tem
))
7381 XSETCDR (cachelist
, Fsubstitute_command_keys (tem
));
7382 XSETCAR (cachelist
, Qt
);
7386 tem
= XCAR (cachelist
);
7393 tem
= Fkey_binding (tem
, Qnil
, Qnil
);
7395 prefix
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7398 def
= XCAR (prefix
);
7399 prefix
= XCDR (prefix
);
7402 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7404 if (!update_menu_bindings
)
7406 else if (NILP (XCAR (cachelist
))) /* Have no saved key. */
7408 if (newcache
/* Always check first time. */
7409 /* Should we check everything when precomputing key
7411 /* If something had no key binding before, don't recheck it
7412 because that is too slow--except if we have a list of
7413 rebound commands in Vdefine_key_rebound_commands, do
7414 recheck any command that appears in that list. */
7415 || (CONSP (Vdefine_key_rebound_commands
)
7416 && !NILP (Fmemq (def
, Vdefine_key_rebound_commands
))))
7419 /* We had a saved key. Is it still bound to the command? */
7422 /* If the command is an alias for another
7423 (such as lmenu.el set it up), check if the
7424 original command matches the cached command. */
7425 && !(SYMBOLP (def
) && EQ (tem
, XSYMBOL (def
)->function
))))
7426 chkcache
= 1; /* Need to recompute key binding. */
7430 /* Recompute equivalent key binding. If the command is an alias
7431 for another (such as lmenu.el set it up), see if the original
7432 command name has equivalent keys. Otherwise look up the
7433 specified command itself. We don't try both, because that
7434 makes lmenu menus slow. */
7436 && SYMBOLP (XSYMBOL (def
)->function
)
7437 && ! NILP (Fget (def
, Qmenu_alias
)))
7438 def
= XSYMBOL (def
)->function
;
7439 tem
= Fwhere_is_internal (def
, Qnil
, Qt
, Qnil
, Qt
);
7440 XSETCAR (cachelist
, tem
);
7443 XSETCDR (cachelist
, Qnil
);
7447 else if (!NILP (keyhint
) && !NILP (XCAR (cachelist
)))
7449 tem
= XCAR (cachelist
);
7453 newcache
= chkcache
;
7456 tem
= Fkey_description (tem
, Qnil
);
7459 if (STRINGP (XCAR (prefix
)))
7460 tem
= concat2 (XCAR (prefix
), tem
);
7461 if (STRINGP (XCDR (prefix
)))
7462 tem
= concat2 (tem
, XCDR (prefix
));
7464 XSETCDR (cachelist
, tem
);
7468 tem
= XCDR (cachelist
);
7469 if (newcache
&& !NILP (tem
))
7471 tem
= concat3 (build_string (" ("), tem
, build_string (")"));
7472 XSETCDR (cachelist
, tem
);
7475 /* If we only want to precompute equivalent key bindings, stop here. */
7479 /* If we have an equivalent key binding, use that. */
7480 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7482 /* Include this when menu help is implemented.
7483 tem = XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP];
7484 if (!(NILP (tem) || STRINGP (tem)))
7486 tem = menu_item_eval_property (tem);
7489 XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP] = tem;
7493 /* Handle radio buttons or toggle boxes. */
7494 tem
= AREF (item_properties
, ITEM_PROPERTY_SELECTED
);
7496 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7497 = menu_item_eval_property (tem
);
7504 /***********************************************************************
7506 ***********************************************************************/
7508 /* A vector holding tool bar items while they are parsed in function
7509 tool_bar_items. Each item occupies TOOL_BAR_ITEM_NSCLOTS elements
7512 static Lisp_Object tool_bar_items_vector
;
7514 /* A vector holding the result of parse_tool_bar_item. Layout is like
7515 the one for a single item in tool_bar_items_vector. */
7517 static Lisp_Object tool_bar_item_properties
;
7519 /* Next free index in tool_bar_items_vector. */
7521 static int ntool_bar_items
;
7523 /* The symbols `tool-bar', and `:image'. */
7525 extern Lisp_Object Qtool_bar
;
7526 Lisp_Object QCimage
;
7528 /* Function prototypes. */
7530 static void init_tool_bar_items
P_ ((Lisp_Object
));
7531 static void process_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7532 static int parse_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7533 static void append_tool_bar_item
P_ ((void));
7536 /* Return a vector of tool bar items for keymaps currently in effect.
7537 Reuse vector REUSE if non-nil. Return in *NITEMS the number of
7538 tool bar items found. */
7541 tool_bar_items (reuse
, nitems
)
7552 /* In order to build the menus, we need to call the keymap
7553 accessors. They all call QUIT. But this function is called
7554 during redisplay, during which a quit is fatal. So inhibit
7555 quitting while building the menus. We do this instead of
7556 specbind because (1) errors will clear it anyway and (2) this
7557 avoids risk of specpdl overflow. */
7558 oquit
= Vinhibit_quit
;
7561 /* Initialize tool_bar_items_vector and protect it from GC. */
7562 init_tool_bar_items (reuse
);
7564 /* Build list of keymaps in maps. Set nmaps to the number of maps
7567 /* Should overriding-terminal-local-map and overriding-local-map apply? */
7568 if (!NILP (Voverriding_local_map_menu_flag
))
7570 /* Yes, use them (if non-nil) as well as the global map. */
7571 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
7573 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
7574 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
7575 if (!NILP (Voverriding_local_map
))
7576 maps
[nmaps
++] = Voverriding_local_map
;
7580 /* No, so use major and minor mode keymaps and keymap property.
7581 Note that tool-bar bindings in the local-map and keymap
7582 properties may not work reliable, as they are only
7583 recognized when the tool-bar (or mode-line) is updated,
7584 which does not normally happen after every command. */
7587 nminor
= current_minor_maps (NULL
, &tmaps
);
7588 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
7590 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
7591 maps
[nmaps
++] = tem
;
7592 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
7594 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
7597 /* Add global keymap at the end. */
7598 maps
[nmaps
++] = current_global_map
;
7600 /* Process maps in reverse order and look up in each map the prefix
7602 for (i
= nmaps
- 1; i
>= 0; --i
)
7603 if (!NILP (maps
[i
]))
7607 keymap
= get_keymap (access_keymap (maps
[i
], Qtool_bar
, 1, 0, 1), 0, 1);
7612 /* KEYMAP is a list `(keymap (KEY . BINDING) ...)'. */
7613 for (tail
= keymap
; CONSP (tail
); tail
= XCDR (tail
))
7615 Lisp_Object keydef
= XCAR (tail
);
7617 process_tool_bar_item (XCAR (keydef
), XCDR (keydef
));
7622 Vinhibit_quit
= oquit
;
7623 *nitems
= ntool_bar_items
/ TOOL_BAR_ITEM_NSLOTS
;
7624 return tool_bar_items_vector
;
7628 /* Process the definition of KEY which is DEF. */
7631 process_tool_bar_item (key
, def
)
7632 Lisp_Object key
, def
;
7635 extern Lisp_Object Qundefined
;
7636 struct gcpro gcpro1
, gcpro2
;
7638 /* Protect KEY and DEF from GC because parse_tool_bar_item may call
7642 if (EQ (def
, Qundefined
))
7644 /* If a map has an explicit `undefined' as definition,
7645 discard any previously made item. */
7646 for (i
= 0; i
< ntool_bar_items
; i
+= TOOL_BAR_ITEM_NSLOTS
)
7648 Lisp_Object
*v
= XVECTOR (tool_bar_items_vector
)->contents
+ i
;
7650 if (EQ (key
, v
[TOOL_BAR_ITEM_KEY
]))
7652 if (ntool_bar_items
> i
+ TOOL_BAR_ITEM_NSLOTS
)
7653 bcopy (v
+ TOOL_BAR_ITEM_NSLOTS
, v
,
7654 ((ntool_bar_items
- i
- TOOL_BAR_ITEM_NSLOTS
)
7655 * sizeof (Lisp_Object
)));
7656 ntool_bar_items
-= TOOL_BAR_ITEM_NSLOTS
;
7661 else if (parse_tool_bar_item (key
, def
))
7662 /* Append a new tool bar item to tool_bar_items_vector. Accept
7663 more than one definition for the same key. */
7664 append_tool_bar_item ();
7670 /* Parse a tool bar item specification ITEM for key KEY and return the
7671 result in tool_bar_item_properties. Value is zero if ITEM is
7674 ITEM is a list `(menu-item CAPTION BINDING PROPS...)'.
7676 CAPTION is the caption of the item, If it's not a string, it is
7677 evaluated to get a string.
7679 BINDING is the tool bar item's binding. Tool-bar items with keymaps
7680 as binding are currently ignored.
7682 The following properties are recognized:
7686 FORM is evaluated and specifies whether the tool bar item is
7687 enabled or disabled.
7691 FORM is evaluated and specifies whether the tool bar item is visible.
7693 - `:filter FUNCTION'
7695 FUNCTION is invoked with one parameter `(quote BINDING)'. Its
7696 result is stored as the new binding.
7698 - `:button (TYPE SELECTED)'
7700 TYPE must be one of `:radio' or `:toggle'. SELECTED is evaluated
7701 and specifies whether the button is selected (pressed) or not.
7705 IMAGES is either a single image specification or a vector of four
7706 image specifications. See enum tool_bar_item_images.
7708 - `:help HELP-STRING'.
7710 Gives a help string to display for the tool bar item. */
7713 parse_tool_bar_item (key
, item
)
7714 Lisp_Object key
, item
;
7716 /* Access slot with index IDX of vector tool_bar_item_properties. */
7717 #define PROP(IDX) XVECTOR (tool_bar_item_properties)->contents[IDX]
7719 Lisp_Object filter
= Qnil
;
7720 Lisp_Object caption
;
7723 /* Defininition looks like `(menu-item CAPTION BINDING PROPS...)'.
7724 Rule out items that aren't lists, don't start with
7725 `menu-item' or whose rest following `tool-bar-item' is not a
7728 || !EQ (XCAR (item
), Qmenu_item
)
7729 || (item
= XCDR (item
),
7733 /* Create tool_bar_item_properties vector if necessary. Reset it to
7735 if (VECTORP (tool_bar_item_properties
))
7737 for (i
= 0; i
< TOOL_BAR_ITEM_NSLOTS
; ++i
)
7741 tool_bar_item_properties
7742 = Fmake_vector (make_number (TOOL_BAR_ITEM_NSLOTS
), Qnil
);
7745 PROP (TOOL_BAR_ITEM_KEY
) = key
;
7746 PROP (TOOL_BAR_ITEM_ENABLED_P
) = Qt
;
7748 /* Get the caption of the item. If the caption is not a string,
7749 evaluate it to get a string. If we don't get a string, skip this
7751 caption
= XCAR (item
);
7752 if (!STRINGP (caption
))
7754 caption
= menu_item_eval_property (caption
);
7755 if (!STRINGP (caption
))
7758 PROP (TOOL_BAR_ITEM_CAPTION
) = caption
;
7760 /* Give up if rest following the caption is not a list. */
7765 /* Store the binding. */
7766 PROP (TOOL_BAR_ITEM_BINDING
) = XCAR (item
);
7769 /* Ignore cached key binding, if any. */
7770 if (CONSP (item
) && CONSP (XCAR (item
)))
7773 /* Process the rest of the properties. */
7774 for (; CONSP (item
) && CONSP (XCDR (item
)); item
= XCDR (XCDR (item
)))
7776 Lisp_Object key
, value
;
7779 value
= XCAR (XCDR (item
));
7781 if (EQ (key
, QCenable
))
7782 /* `:enable FORM'. */
7783 PROP (TOOL_BAR_ITEM_ENABLED_P
) = value
;
7784 else if (EQ (key
, QCvisible
))
7786 /* `:visible FORM'. If got a visible property and that
7787 evaluates to nil then ignore this item. */
7788 if (NILP (menu_item_eval_property (value
)))
7791 else if (EQ (key
, QChelp
))
7792 /* `:help HELP-STRING'. */
7793 PROP (TOOL_BAR_ITEM_HELP
) = value
;
7794 else if (EQ (key
, QCfilter
))
7795 /* ':filter FORM'. */
7797 else if (EQ (key
, QCbutton
) && CONSP (value
))
7799 /* `:button (TYPE . SELECTED)'. */
7800 Lisp_Object type
, selected
;
7802 type
= XCAR (value
);
7803 selected
= XCDR (value
);
7804 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7806 PROP (TOOL_BAR_ITEM_SELECTED_P
) = selected
;
7807 PROP (TOOL_BAR_ITEM_TYPE
) = type
;
7810 else if (EQ (key
, QCimage
)
7812 || (VECTORP (value
) && XVECTOR (value
)->size
== 4)))
7813 /* Value is either a single image specification or a vector
7814 of 4 such specifications for the different button states. */
7815 PROP (TOOL_BAR_ITEM_IMAGES
) = value
;
7818 /* If got a filter apply it on binding. */
7820 PROP (TOOL_BAR_ITEM_BINDING
)
7821 = menu_item_eval_property (list2 (filter
,
7823 PROP (TOOL_BAR_ITEM_BINDING
))));
7825 /* See if the binding is a keymap. Give up if it is. */
7826 if (CONSP (get_keymap (PROP (TOOL_BAR_ITEM_BINDING
), 0, 1)))
7829 /* Enable or disable selection of item. */
7830 if (!EQ (PROP (TOOL_BAR_ITEM_ENABLED_P
), Qt
))
7831 PROP (TOOL_BAR_ITEM_ENABLED_P
)
7832 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_ENABLED_P
));
7834 /* Handle radio buttons or toggle boxes. */
7835 if (!NILP (PROP (TOOL_BAR_ITEM_SELECTED_P
)))
7836 PROP (TOOL_BAR_ITEM_SELECTED_P
)
7837 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_SELECTED_P
));
7845 /* Initialize tool_bar_items_vector. REUSE, if non-nil, is a vector
7846 that can be reused. */
7849 init_tool_bar_items (reuse
)
7852 if (VECTORP (reuse
))
7853 tool_bar_items_vector
= reuse
;
7855 tool_bar_items_vector
= Fmake_vector (make_number (64), Qnil
);
7856 ntool_bar_items
= 0;
7860 /* Append parsed tool bar item properties from
7861 tool_bar_item_properties */
7864 append_tool_bar_item ()
7866 Lisp_Object
*to
, *from
;
7868 /* Enlarge tool_bar_items_vector if necessary. */
7869 if (ntool_bar_items
+ TOOL_BAR_ITEM_NSLOTS
7870 >= XVECTOR (tool_bar_items_vector
)->size
)
7872 Lisp_Object new_vector
;
7873 int old_size
= XVECTOR (tool_bar_items_vector
)->size
;
7875 new_vector
= Fmake_vector (make_number (2 * old_size
), Qnil
);
7876 bcopy (XVECTOR (tool_bar_items_vector
)->contents
,
7877 XVECTOR (new_vector
)->contents
,
7878 old_size
* sizeof (Lisp_Object
));
7879 tool_bar_items_vector
= new_vector
;
7882 /* Append entries from tool_bar_item_properties to the end of
7883 tool_bar_items_vector. */
7884 to
= XVECTOR (tool_bar_items_vector
)->contents
+ ntool_bar_items
;
7885 from
= XVECTOR (tool_bar_item_properties
)->contents
;
7886 bcopy (from
, to
, TOOL_BAR_ITEM_NSLOTS
* sizeof *to
);
7887 ntool_bar_items
+= TOOL_BAR_ITEM_NSLOTS
;
7894 /* Read a character using menus based on maps in the array MAPS.
7895 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
7896 Return t if we displayed a menu but the user rejected it.
7898 PREV_EVENT is the previous input event, or nil if we are reading
7899 the first event of a key sequence.
7901 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
7902 if we used a mouse menu to read the input, or zero otherwise. If
7903 USED_MOUSE_MENU is null, we don't dereference it.
7905 The prompting is done based on the prompt-string of the map
7906 and the strings associated with various map elements.
7908 This can be done with X menus or with menus put in the minibuf.
7909 These are done in different ways, depending on how the input will be read.
7910 Menus using X are done after auto-saving in read-char, getting the input
7911 event from Fx_popup_menu; menus using the minibuf use read_char recursively
7912 and do auto-saving in the inner call of read_char. */
7915 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
7918 Lisp_Object prev_event
;
7919 int *used_mouse_menu
;
7922 register Lisp_Object name
= Qnil
;
7924 if (used_mouse_menu
)
7925 *used_mouse_menu
= 0;
7927 /* Use local over global Menu maps */
7929 if (! menu_prompting
)
7932 /* Optionally disregard all but the global map. */
7933 if (inhibit_local_menu_bar_menus
)
7935 maps
+= (nmaps
- 1);
7939 /* Get the menu name from the first map that has one (a prompt string). */
7940 for (mapno
= 0; mapno
< nmaps
; mapno
++)
7942 name
= Fkeymap_prompt (maps
[mapno
]);
7947 /* If we don't have any menus, just read a character normally. */
7948 if (!STRINGP (name
))
7952 /* If we got to this point via a mouse click,
7953 use a real menu for mouse selection. */
7954 if (EVENT_HAS_PARAMETERS (prev_event
)
7955 && !EQ (XCAR (prev_event
), Qmenu_bar
)
7956 && !EQ (XCAR (prev_event
), Qtool_bar
))
7958 /* Display the menu and get the selection. */
7959 Lisp_Object
*realmaps
7960 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
7964 /* Use the maps that are not nil. */
7965 for (mapno
= 0; mapno
< nmaps
; mapno
++)
7966 if (!NILP (maps
[mapno
]))
7967 realmaps
[nmaps1
++] = maps
[mapno
];
7969 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
7974 record_menu_key (XCAR (value
));
7976 /* If we got multiple events, unread all but
7978 There is no way to prevent those unread events
7979 from showing up later in last_nonmenu_event.
7980 So turn symbol and integer events into lists,
7981 to indicate that they came from a mouse menu,
7982 so that when present in last_nonmenu_event
7983 they won't confuse things. */
7984 for (tem
= XCDR (value
); !NILP (tem
); tem
= XCDR (tem
))
7986 record_menu_key (XCAR (tem
));
7987 if (SYMBOLP (XCAR (tem
))
7988 || INTEGERP (XCAR (tem
)))
7989 XSETCAR (tem
, Fcons (XCAR (tem
), Qdisabled
));
7992 /* If we got more than one event, put all but the first
7993 onto this list to be read later.
7994 Return just the first event now. */
7995 Vunread_command_events
7996 = nconc2 (XCDR (value
), Vunread_command_events
);
7997 value
= XCAR (value
);
7999 else if (NILP (value
))
8001 if (used_mouse_menu
)
8002 *used_mouse_menu
= 1;
8005 #endif /* HAVE_MENUS */
8009 /* Buffer in use so far for the minibuf prompts for menu keymaps.
8010 We make this bigger when necessary, and never free it. */
8011 static char *read_char_minibuf_menu_text
;
8012 /* Size of that buffer. */
8013 static int read_char_minibuf_menu_width
;
8016 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
8022 register Lisp_Object name
;
8024 /* FIXME: Use the minibuffer's frame width. */
8025 int width
= FRAME_COLS (SELECTED_FRAME ()) - 4;
8028 Lisp_Object rest
, vector
;
8034 if (! menu_prompting
)
8037 /* Make sure we have a big enough buffer for the menu text. */
8038 if (read_char_minibuf_menu_text
== 0)
8040 read_char_minibuf_menu_width
= width
+ 4;
8041 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
8043 else if (width
+ 4 > read_char_minibuf_menu_width
)
8045 read_char_minibuf_menu_width
= width
+ 4;
8046 read_char_minibuf_menu_text
8047 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
8049 menu
= read_char_minibuf_menu_text
;
8051 /* Get the menu name from the first map that has one (a prompt string). */
8052 for (mapno
= 0; mapno
< nmaps
; mapno
++)
8054 name
= Fkeymap_prompt (maps
[mapno
]);
8059 /* If we don't have any menus, just read a character normally. */
8060 if (!STRINGP (name
))
8063 /* Prompt string always starts with map's prompt, and a space. */
8064 strcpy (menu
, SDATA (name
));
8065 nlength
= SBYTES (name
);
8066 menu
[nlength
++] = ':';
8067 menu
[nlength
++] = ' ';
8070 /* Start prompting at start of first map. */
8074 /* Present the documented bindings, a line at a time. */
8081 Lisp_Object orig_defn_macro
;
8083 /* Loop over elements of map. */
8088 /* If reached end of map, start at beginning of next map. */
8092 /* At end of last map, wrap around to first map if just starting,
8093 or end this line if already have something on it. */
8097 if (notfirst
|| nobindings
) break;
8102 /* Look at the next element of the map. */
8104 elt
= XVECTOR (vector
)->contents
[idx
];
8106 elt
= Fcar_safe (rest
);
8108 if (idx
< 0 && VECTORP (elt
))
8110 /* If we found a dense table in the keymap,
8111 advanced past it, but start scanning its contents. */
8112 rest
= Fcdr_safe (rest
);
8118 /* An ordinary element. */
8119 Lisp_Object event
, tem
;
8123 event
= Fcar_safe (elt
); /* alist */
8124 elt
= Fcdr_safe (elt
);
8128 XSETINT (event
, idx
); /* vector */
8131 /* Ignore the element if it has no prompt string. */
8132 if (INTEGERP (event
) && parse_menu_item (elt
, 0, -1))
8134 /* 1 if the char to type matches the string. */
8136 Lisp_Object upcased_event
, downcased_event
;
8137 Lisp_Object desc
= Qnil
;
8139 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
8141 upcased_event
= Fupcase (event
);
8142 downcased_event
= Fdowncase (event
);
8143 char_matches
= (XINT (upcased_event
) == SREF (s
, 0)
8144 || XINT (downcased_event
) == SREF (s
, 0));
8146 desc
= Fsingle_key_description (event
, Qnil
);
8148 #if 0 /* It is redundant to list the equivalent key bindings because
8149 the prefix is what the user has already typed. */
8151 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_KEYEQ
];
8153 /* Insert equivalent keybinding. */
8154 s
= concat2 (s
, tem
);
8157 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_TYPE
];
8158 if (EQ (tem
, QCradio
) || EQ (tem
, QCtoggle
))
8160 /* Insert button prefix. */
8161 Lisp_Object selected
8162 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_SELECTED
];
8163 if (EQ (tem
, QCradio
))
8164 tem
= build_string (NILP (selected
) ? "(*) " : "( ) ");
8166 tem
= build_string (NILP (selected
) ? "[X] " : "[ ] ");
8167 s
= concat2 (tem
, s
);
8171 /* If we have room for the prompt string, add it to this line.
8172 If this is the first on the line, always add it. */
8173 if ((SCHARS (s
) + i
+ 2
8174 + (char_matches
? 0 : SCHARS (desc
) + 3))
8180 /* Punctuate between strings. */
8183 strcpy (menu
+ i
, ", ");
8189 /* If the char to type doesn't match the string's
8190 first char, explicitly show what char to type. */
8193 /* Add as much of string as fits. */
8194 thiswidth
= SCHARS (desc
);
8195 if (thiswidth
+ i
> width
)
8196 thiswidth
= width
- i
;
8197 bcopy (SDATA (desc
), menu
+ i
, thiswidth
);
8199 strcpy (menu
+ i
, " = ");
8203 /* Add as much of string as fits. */
8204 thiswidth
= SCHARS (s
);
8205 if (thiswidth
+ i
> width
)
8206 thiswidth
= width
- i
;
8207 bcopy (SDATA (s
), menu
+ i
, thiswidth
);
8213 /* If this element does not fit, end the line now,
8214 and save the element for the next line. */
8215 strcpy (menu
+ i
, "...");
8220 /* Move past this element. */
8221 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
8222 /* Handle reaching end of dense table. */
8227 rest
= Fcdr_safe (rest
);
8231 /* Prompt with that and read response. */
8232 message2_nolog (menu
, strlen (menu
),
8233 ! NILP (current_buffer
->enable_multibyte_characters
));
8235 /* Make believe its not a keyboard macro in case the help char
8236 is pressed. Help characters are not recorded because menu prompting
8237 is not used on replay.
8239 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
8240 current_kboard
->defining_kbd_macro
= Qnil
;
8242 obj
= read_char (commandflag
, 0, 0, Qt
, 0);
8243 while (BUFFERP (obj
));
8244 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
8246 if (!INTEGERP (obj
))
8251 if (! EQ (obj
, menu_prompt_more_char
)
8252 && (!INTEGERP (menu_prompt_more_char
)
8253 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
8255 if (!NILP (current_kboard
->defining_kbd_macro
))
8256 store_kbd_macro_char (obj
);
8259 /* Help char - go round again */
8263 /* Reading key sequences. */
8265 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
8266 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
8267 keymap, or nil otherwise. Return the index of the first keymap in
8268 which KEY has any binding, or NMAPS if no map has a binding.
8270 If KEY is a meta ASCII character, treat it like meta-prefix-char
8271 followed by the corresponding non-meta character. Keymaps in
8272 CURRENT with non-prefix bindings for meta-prefix-char become nil in
8275 If KEY has no bindings in any of the CURRENT maps, NEXT is left
8278 NEXT may be the same array as CURRENT. */
8281 follow_key (key
, nmaps
, current
, defs
, next
)
8283 Lisp_Object
*current
, *defs
, *next
;
8286 int i
, first_binding
;
8288 first_binding
= nmaps
;
8289 for (i
= nmaps
- 1; i
>= 0; i
--)
8291 if (! NILP (current
[i
]))
8293 defs
[i
] = access_keymap (current
[i
], key
, 1, 0, 1);
8294 if (! NILP (defs
[i
]))
8301 /* Given the set of bindings we've found, produce the next set of maps. */
8302 if (first_binding
< nmaps
)
8303 for (i
= 0; i
< nmaps
; i
++)
8304 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap (defs
[i
], 0, 1);
8306 return first_binding
;
8309 /* Structure used to keep track of partial application of key remapping
8310 such as Vfunction_key_map and Vkey_translation_map. */
8311 typedef struct keyremap
8313 Lisp_Object map
, parent
;
8317 /* Lookup KEY in MAP.
8318 MAP is a keymap mapping keys to key vectors or functions.
8319 If the mapping is a function and DO_FUNCTION is non-zero, then
8320 the function is called with PROMPT as parameter and its return
8321 value is used as the return value of this function (after checking
8322 that it is indeed a vector). */
8325 access_keymap_keyremap (map
, key
, prompt
, do_funcall
)
8326 Lisp_Object map
, key
, prompt
;
8331 next
= access_keymap (map
, key
, 1, 0, 1);
8333 /* Handle symbol with autoload definition. */
8334 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8335 && CONSP (XSYMBOL (next
)->function
)
8336 && EQ (XCAR (XSYMBOL (next
)->function
), Qautoload
))
8337 do_autoload (XSYMBOL (next
)->function
, next
);
8339 /* Handle a symbol whose function definition is a keymap
8341 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8342 && (!NILP (Farrayp (XSYMBOL (next
)->function
))
8343 || KEYMAPP (XSYMBOL (next
)->function
)))
8344 next
= XSYMBOL (next
)->function
;
8346 /* If the keymap gives a function, not an
8347 array, then call the function with one arg and use
8348 its value instead. */
8349 if (SYMBOLP (next
) && !NILP (Ffboundp (next
)) && do_funcall
)
8354 next
= call1 (next
, prompt
);
8355 /* If the function returned something invalid,
8356 barf--don't ignore it.
8357 (To ignore it safely, we would need to gcpro a bunch of
8358 other variables.) */
8359 if (! (VECTORP (next
) || STRINGP (next
)))
8360 error ("Function %s returns invalid key sequence", tem
);
8365 /* Do one step of the key remapping used for function-key-map and
8366 key-translation-map:
8367 KEYBUF is the buffer holding the input events.
8368 BUFSIZE is its maximum size.
8369 FKEY is a pointer to the keyremap structure to use.
8370 INPUT is the index of the last element in KEYBUF.
8371 DOIT if non-zero says that the remapping can actually take place.
8372 DIFF is used to return the number of keys added/removed by the remapping.
8373 PARENT is the root of the keymap.
8374 PROMPT is the prompt to use if the remapping happens through a function.
8375 The return value is non-zero if the remapping actually took place. */
8378 keyremap_step (keybuf
, bufsize
, fkey
, input
, doit
, diff
, prompt
)
8379 Lisp_Object
*keybuf
, prompt
;
8381 int input
, doit
, *diff
, bufsize
;
8383 Lisp_Object next
, key
;
8385 key
= keybuf
[fkey
->end
++];
8386 next
= access_keymap_keyremap (fkey
->map
, key
, prompt
, doit
);
8388 /* If keybuf[fkey->start..fkey->end] is bound in the
8389 map and we're in a position to do the key remapping, replace it with
8390 the binding and restart with fkey->start at the end. */
8391 if ((VECTORP (next
) || STRINGP (next
)) && doit
)
8393 int len
= XFASTINT (Flength (next
));
8396 *diff
= len
- (fkey
->end
- fkey
->start
);
8398 if (input
+ *diff
>= bufsize
)
8399 error ("Key sequence too long");
8401 /* Shift the keys that follow fkey->end. */
8403 for (i
= fkey
->end
; i
< input
; i
++)
8404 keybuf
[i
+ *diff
] = keybuf
[i
];
8406 for (i
= input
- 1; i
>= fkey
->end
; i
--)
8407 keybuf
[i
+ *diff
] = keybuf
[i
];
8408 /* Overwrite the old keys with the new ones. */
8409 for (i
= 0; i
< len
; i
++)
8410 keybuf
[fkey
->start
+ i
]
8411 = Faref (next
, make_number (i
));
8413 fkey
->start
= fkey
->end
+= *diff
;
8414 fkey
->map
= fkey
->parent
;
8419 fkey
->map
= get_keymap (next
, 0, 1);
8421 /* If we no longer have a bound suffix, try a new position for
8423 if (!CONSP (fkey
->map
))
8425 fkey
->end
= ++fkey
->start
;
8426 fkey
->map
= fkey
->parent
;
8431 /* Read a sequence of keys that ends with a non prefix character,
8432 storing it in KEYBUF, a buffer of size BUFSIZE.
8434 Return the length of the key sequence stored.
8435 Return -1 if the user rejected a command menu.
8437 Echo starting immediately unless `prompt' is 0.
8439 Where a key sequence ends depends on the currently active keymaps.
8440 These include any minor mode keymaps active in the current buffer,
8441 the current buffer's local map, and the global map.
8443 If a key sequence has no other bindings, we check Vfunction_key_map
8444 to see if some trailing subsequence might be the beginning of a
8445 function key's sequence. If so, we try to read the whole function
8446 key, and substitute its symbolic name into the key sequence.
8448 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
8449 `double-' events into similar click events, if that would make them
8450 bound. We try to turn `triple-' events first into `double-' events,
8453 If we get a mouse click in a mode line, vertical divider, or other
8454 non-text area, we treat the click as if it were prefixed by the
8455 symbol denoting that area - `mode-line', `vertical-line', or
8458 If the sequence starts with a mouse click, we read the key sequence
8459 with respect to the buffer clicked on, not the current buffer.
8461 If the user switches frames in the midst of a key sequence, we put
8462 off the switch-frame event until later; the next call to
8463 read_char will return it.
8465 If FIX_CURRENT_BUFFER is nonzero, we restore current_buffer
8466 from the selected window's buffer. */
8469 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
8470 can_return_switch_frame
, fix_current_buffer
)
8471 Lisp_Object
*keybuf
;
8474 int dont_downcase_last
;
8475 int can_return_switch_frame
;
8476 int fix_current_buffer
;
8478 volatile Lisp_Object from_string
;
8479 volatile int count
= SPECPDL_INDEX ();
8481 /* How many keys there are in the current key sequence. */
8484 /* The length of the echo buffer when we started reading, and
8485 the length of this_command_keys when we started reading. */
8486 volatile int echo_start
;
8487 volatile int keys_start
;
8489 /* The number of keymaps we're scanning right now, and the number of
8490 keymaps we have allocated space for. */
8492 volatile int nmaps_allocated
= 0;
8494 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
8495 the current keymaps. */
8496 Lisp_Object
*volatile defs
= NULL
;
8498 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
8499 in the current keymaps, or nil where it is not a prefix. */
8500 Lisp_Object
*volatile submaps
= NULL
;
8502 /* The local map to start out with at start of key sequence. */
8503 volatile Lisp_Object orig_local_map
;
8505 /* The map from the `keymap' property to start out with at start of
8507 volatile Lisp_Object orig_keymap
;
8509 /* 1 if we have already considered switching to the local-map property
8510 of the place where a mouse click occurred. */
8511 volatile int localized_local_map
= 0;
8513 /* The index in defs[] of the first keymap that has a binding for
8514 this key sequence. In other words, the lowest i such that
8515 defs[i] is non-nil. */
8516 volatile int first_binding
;
8517 /* Index of the first key that has no binding.
8518 It is useless to try fkey.start larger than that. */
8519 volatile int first_unbound
;
8521 /* If t < mock_input, then KEYBUF[t] should be read as the next
8524 We use this to recover after recognizing a function key. Once we
8525 realize that a suffix of the current key sequence is actually a
8526 function key's escape sequence, we replace the suffix with the
8527 function key's binding from Vfunction_key_map. Now keybuf
8528 contains a new and different key sequence, so the echo area,
8529 this_command_keys, and the submaps and defs arrays are wrong. In
8530 this situation, we set mock_input to t, set t to 0, and jump to
8531 restart_sequence; the loop will read keys from keybuf up until
8532 mock_input, thus rebuilding the state; and then it will resume
8533 reading characters from the keyboard. */
8534 volatile int mock_input
= 0;
8536 /* If the sequence is unbound in submaps[], then
8537 keybuf[fkey.start..fkey.end-1] is a prefix in Vfunction_key_map,
8538 and fkey.map is its binding.
8540 These might be > t, indicating that all function key scanning
8541 should hold off until t reaches them. We do this when we've just
8542 recognized a function key, to avoid searching for the function
8543 key's again in Vfunction_key_map. */
8544 volatile keyremap fkey
;
8546 /* Likewise, for key_translation_map. */
8547 volatile keyremap keytran
;
8549 /* If we receive a `switch-frame' or `select-window' event in the middle of
8550 a key sequence, we put it off for later.
8551 While we're reading, we keep the event here. */
8552 volatile Lisp_Object delayed_switch_frame
;
8554 /* See the comment below... */
8555 #if defined (GOBBLE_FIRST_EVENT)
8556 Lisp_Object first_event
;
8559 volatile Lisp_Object original_uppercase
;
8560 volatile int original_uppercase_position
= -1;
8562 /* Gets around Microsoft compiler limitations. */
8565 struct buffer
*starting_buffer
;
8567 /* List of events for which a fake prefix key has been generated. */
8568 volatile Lisp_Object fake_prefixed_keys
= Qnil
;
8570 #if defined (GOBBLE_FIRST_EVENT)
8574 struct gcpro gcpro1
;
8576 GCPRO1 (fake_prefixed_keys
);
8577 raw_keybuf_count
= 0;
8579 last_nonmenu_event
= Qnil
;
8581 delayed_switch_frame
= Qnil
;
8582 fkey
.map
= fkey
.parent
= Vfunction_key_map
;
8583 keytran
.map
= keytran
.parent
= Vkey_translation_map
;
8584 /* If there is no translation-map, turn off scanning. */
8585 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
8586 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
8591 echo_prompt (prompt
);
8592 else if (cursor_in_echo_area
8593 && (FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8594 && NILP (Fzerop (Vecho_keystrokes
)))
8595 /* This doesn't put in a dash if the echo buffer is empty, so
8596 you don't always see a dash hanging out in the minibuffer. */
8600 /* Record the initial state of the echo area and this_command_keys;
8601 we will need to restore them if we replay a key sequence. */
8603 echo_start
= echo_length ();
8604 keys_start
= this_command_key_count
;
8605 this_single_command_key_start
= keys_start
;
8607 #if defined (GOBBLE_FIRST_EVENT)
8608 /* This doesn't quite work, because some of the things that read_char
8609 does cannot safely be bypassed. It seems too risky to try to make
8612 /* Read the first char of the sequence specially, before setting
8613 up any keymaps, in case a filter runs and switches buffers on us. */
8614 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
8616 #endif /* GOBBLE_FIRST_EVENT */
8618 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8619 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8622 /* We jump here when the key sequence has been thoroughly changed, and
8623 we need to rescan it starting from the beginning. When we jump here,
8624 keybuf[0..mock_input] holds the sequence we should reread. */
8627 starting_buffer
= current_buffer
;
8628 first_unbound
= bufsize
+ 1;
8630 /* Build our list of keymaps.
8631 If we recognize a function key and replace its escape sequence in
8632 keybuf with its symbol, or if the sequence starts with a mouse
8633 click and we need to switch buffers, we jump back here to rebuild
8634 the initial keymaps from the current buffer. */
8637 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
8638 || !NILP (Voverriding_local_map
))
8640 if (3 > nmaps_allocated
)
8642 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
8643 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
8644 nmaps_allocated
= 3;
8646 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
8647 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
8648 if (!NILP (Voverriding_local_map
))
8649 submaps
[nmaps
++] = Voverriding_local_map
;
8657 nminor
= current_minor_maps (0, &maps
);
8658 total
= nminor
+ (!NILP (orig_keymap
) ? 3 : 2);
8660 if (total
> nmaps_allocated
)
8662 submaps
= (Lisp_Object
*) alloca (total
* sizeof (submaps
[0]));
8663 defs
= (Lisp_Object
*) alloca (total
* sizeof (defs
[0]));
8664 nmaps_allocated
= total
;
8667 if (!NILP (orig_keymap
))
8668 submaps
[nmaps
++] = orig_keymap
;
8670 bcopy (maps
, (void *) (submaps
+ nmaps
),
8671 nminor
* sizeof (submaps
[0]));
8675 submaps
[nmaps
++] = orig_local_map
;
8677 submaps
[nmaps
++] = current_global_map
;
8679 /* Find an accurate initial value for first_binding. */
8680 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
8681 if (! NILP (submaps
[first_binding
]))
8684 /* Start from the beginning in keybuf. */
8687 /* These are no-ops the first time through, but if we restart, they
8688 revert the echo area and this_command_keys to their original state. */
8689 this_command_key_count
= keys_start
;
8690 if (INTERACTIVE
&& t
< mock_input
)
8691 echo_truncate (echo_start
);
8693 /* If the best binding for the current key sequence is a keymap, or
8694 we may be looking at a function key's escape sequence, keep on
8696 while (first_binding
< nmaps
8697 /* Keep reading as long as there's a prefix binding. */
8698 ? !NILP (submaps
[first_binding
])
8699 /* Don't return in the middle of a possible function key sequence,
8700 if the only bindings we found were via case conversion.
8701 Thus, if ESC O a has a function-key-map translation
8702 and ESC o has a binding, don't return after ESC O,
8703 so that we can translate ESC O plus the next character. */
8704 : (fkey
.start
< t
|| keytran
.start
< t
))
8707 int used_mouse_menu
= 0;
8709 /* Where the last real key started. If we need to throw away a
8710 key that has expanded into more than one element of keybuf
8711 (say, a mouse click on the mode line which is being treated
8712 as [mode-line (mouse-...)], then we backtrack to this point
8714 volatile int last_real_key_start
;
8716 /* These variables are analogous to echo_start and keys_start;
8717 while those allow us to restart the entire key sequence,
8718 echo_local_start and keys_local_start allow us to throw away
8720 volatile int echo_local_start
, keys_local_start
, local_first_binding
;
8722 eassert (fkey
.end
== t
|| (fkey
.end
> t
&& fkey
.end
<= mock_input
));
8723 eassert (fkey
.start
<= fkey
.end
);
8724 eassert (keytran
.start
<= keytran
.end
);
8725 /* key-translation-map is applied *after* function-key-map. */
8726 eassert (keytran
.end
<= fkey
.start
);
8728 if (first_unbound
< fkey
.start
&& first_unbound
< keytran
.start
)
8729 { /* The prefix upto first_unbound has no binding and has
8730 no translation left to do either, so we know it's unbound.
8731 If we don't stop now, we risk staying here indefinitely
8732 (if the user keeps entering fkey or keytran prefixes
8733 like C-c ESC ESC ESC ESC ...) */
8735 for (i
= first_unbound
+ 1; i
< t
; i
++)
8736 keybuf
[i
- first_unbound
- 1] = keybuf
[i
];
8737 mock_input
= t
- first_unbound
- 1;
8738 fkey
.end
= fkey
.start
-= first_unbound
+ 1;
8739 fkey
.map
= fkey
.parent
;
8740 keytran
.end
= keytran
.start
-= first_unbound
+ 1;
8741 keytran
.map
= keytran
.parent
;
8742 goto replay_sequence
;
8746 error ("Key sequence too long");
8749 echo_local_start
= echo_length ();
8750 keys_local_start
= this_command_key_count
;
8751 local_first_binding
= first_binding
;
8754 /* These are no-ops, unless we throw away a keystroke below and
8755 jumped back up to replay_key; in that case, these restore the
8756 variables to their original state, allowing us to replay the
8758 if (INTERACTIVE
&& t
< mock_input
)
8759 echo_truncate (echo_local_start
);
8760 this_command_key_count
= keys_local_start
;
8761 first_binding
= local_first_binding
;
8763 /* By default, assume each event is "real". */
8764 last_real_key_start
= t
;
8766 /* Does mock_input indicate that we are re-reading a key sequence? */
8770 add_command_key (key
);
8771 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8772 && NILP (Fzerop (Vecho_keystrokes
)))
8776 /* If not, we should actually read a character. */
8781 KBOARD
*interrupted_kboard
= current_kboard
;
8782 struct frame
*interrupted_frame
= SELECTED_FRAME ();
8783 if (setjmp (wrong_kboard_jmpbuf
))
8785 if (!NILP (delayed_switch_frame
))
8787 interrupted_kboard
->kbd_queue
8788 = Fcons (delayed_switch_frame
,
8789 interrupted_kboard
->kbd_queue
);
8790 delayed_switch_frame
= Qnil
;
8793 interrupted_kboard
->kbd_queue
8794 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
8796 /* If the side queue is non-empty, ensure it begins with a
8797 switch-frame, so we'll replay it in the right context. */
8798 if (CONSP (interrupted_kboard
->kbd_queue
)
8799 && (key
= XCAR (interrupted_kboard
->kbd_queue
),
8800 !(EVENT_HAS_PARAMETERS (key
)
8801 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
8805 XSETFRAME (frame
, interrupted_frame
);
8806 interrupted_kboard
->kbd_queue
8807 = Fcons (make_lispy_switch_frame (frame
),
8808 interrupted_kboard
->kbd_queue
);
8811 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8812 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8813 goto replay_sequence
;
8816 key
= read_char (NILP (prompt
), nmaps
,
8817 (Lisp_Object
*) submaps
, last_nonmenu_event
,
8821 /* read_char returns t when it shows a menu and the user rejects it.
8825 unbind_to (count
, Qnil
);
8830 /* read_char returns -1 at the end of a macro.
8831 Emacs 18 handles this by returning immediately with a
8832 zero, so that's what we'll do. */
8833 if (INTEGERP (key
) && XINT (key
) == -1)
8836 /* The Microsoft C compiler can't handle the goto that
8842 /* If the current buffer has been changed from under us, the
8843 keymap may have changed, so replay the sequence. */
8846 timer_resume_idle ();
8849 /* Reset the current buffer from the selected window
8850 in case something changed the former and not the latter.
8851 This is to be more consistent with the behavior
8852 of the command_loop_1. */
8853 if (fix_current_buffer
)
8855 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
8857 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
8858 Fset_buffer (XWINDOW (selected_window
)->buffer
);
8861 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8862 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8863 goto replay_sequence
;
8866 /* If we have a quit that was typed in another frame, and
8867 quit_throw_to_read_char switched buffers,
8868 replay to get the right keymap. */
8870 && XINT (key
) == quit_char
8871 && current_buffer
!= starting_buffer
)
8874 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8878 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8879 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8880 goto replay_sequence
;
8885 if (EVENT_HAS_PARAMETERS (key
)
8886 /* Either a `switch-frame' or a `select-window' event. */
8887 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)), Qswitch_frame
))
8889 /* If we're at the beginning of a key sequence, and the caller
8890 says it's okay, go ahead and return this event. If we're
8891 in the midst of a key sequence, delay it until the end. */
8892 if (t
> 0 || !can_return_switch_frame
)
8894 delayed_switch_frame
= key
;
8900 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8903 /* Clicks in non-text areas get prefixed by the symbol
8904 in their CHAR-ADDRESS field. For example, a click on
8905 the mode line is prefixed by the symbol `mode-line'.
8907 Furthermore, key sequences beginning with mouse clicks
8908 are read using the keymaps of the buffer clicked on, not
8909 the current buffer. So we may have to switch the buffer
8912 When we turn one event into two events, we must make sure
8913 that neither of the two looks like the original--so that,
8914 if we replay the events, they won't be expanded again.
8915 If not for this, such reexpansion could happen either here
8916 or when user programs play with this-command-keys. */
8917 if (EVENT_HAS_PARAMETERS (key
))
8922 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
8923 if (EQ (kind
, Qmouse_click
))
8925 Lisp_Object window
, posn
;
8927 window
= POSN_WINDOW (EVENT_START (key
));
8928 posn
= POSN_POSN (EVENT_START (key
));
8931 || (!NILP (fake_prefixed_keys
)
8932 && !NILP (Fmemq (key
, fake_prefixed_keys
))))
8934 /* We're looking a second time at an event for which
8935 we generated a fake prefix key. Set
8936 last_real_key_start appropriately. */
8938 last_real_key_start
= t
- 1;
8941 /* Key sequences beginning with mouse clicks are
8942 read using the keymaps in the buffer clicked on,
8943 not the current buffer. If we're at the
8944 beginning of a key sequence, switch buffers. */
8945 if (last_real_key_start
== 0
8947 && BUFFERP (XWINDOW (window
)->buffer
)
8948 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
8950 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8954 /* Arrange to go back to the original buffer once we're
8955 done reading the key sequence. Note that we can't
8956 use save_excursion_{save,restore} here, because they
8957 save point as well as the current buffer; we don't
8958 want to save point, because redisplay may change it,
8959 to accommodate a Fset_window_start or something. We
8960 don't want to do this at the top of the function,
8961 because we may get input from a subprocess which
8962 wants to change the selected window and stuff (say,
8964 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
8966 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
8968 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
8969 orig_local_map
= get_local_map (PT
, current_buffer
,
8971 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8972 goto replay_sequence
;
8975 /* For a mouse click, get the local text-property keymap
8976 of the place clicked on, rather than point. */
8977 if (last_real_key_start
== 0
8978 && CONSP (XCDR (key
))
8979 && ! localized_local_map
)
8981 Lisp_Object map_here
, start
, pos
;
8983 localized_local_map
= 1;
8984 start
= EVENT_START (key
);
8986 if (CONSP (start
) && POSN_INBUFFER_P (start
))
8988 pos
= POSN_BUFFER_POSN (start
);
8990 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
8992 map_here
= get_local_map (XINT (pos
),
8993 current_buffer
, Qlocal_map
);
8994 if (!EQ (map_here
, orig_local_map
))
8996 orig_local_map
= map_here
;
9000 goto replay_sequence
;
9002 map_here
= get_local_map (XINT (pos
),
9003 current_buffer
, Qkeymap
);
9004 if (!EQ (map_here
, orig_keymap
))
9006 orig_keymap
= map_here
;
9010 goto replay_sequence
;
9016 /* Expand mode-line and scroll-bar events into two events:
9017 use posn as a fake prefix key. */
9019 && (NILP (fake_prefixed_keys
)
9020 || NILP (Fmemq (key
, fake_prefixed_keys
))))
9022 if (t
+ 1 >= bufsize
)
9023 error ("Key sequence too long");
9026 keybuf
[t
+ 1] = key
;
9029 /* Record that a fake prefix key has been generated
9030 for KEY. Don't modify the event; this would
9031 prevent proper action when the event is pushed
9032 back into unread-command-events. */
9033 fake_prefixed_keys
= Fcons (key
, fake_prefixed_keys
);
9035 /* If on a mode line string with a local keymap,
9036 reconsider the key sequence with that keymap. */
9037 if (string
= POSN_STRING (EVENT_START (key
)),
9038 (CONSP (string
) && STRINGP (XCAR (string
))))
9040 Lisp_Object pos
, map
, map2
;
9042 pos
= XCDR (string
);
9043 string
= XCAR (string
);
9045 && XINT (pos
) < SCHARS (string
))
9047 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9049 orig_local_map
= map
;
9050 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9053 if (!NILP (map
) || !NILP (map2
))
9054 goto replay_sequence
;
9060 else if (NILP (from_string
)
9061 && (string
= POSN_STRING (EVENT_START (key
)),
9062 (CONSP (string
) && STRINGP (XCAR (string
)))))
9064 /* For a click on a string, i.e. overlay string or a
9065 string displayed via the `display' property,
9066 consider `local-map' and `keymap' properties of
9068 Lisp_Object pos
, map
, map2
;
9070 pos
= XCDR (string
);
9071 string
= XCAR (string
);
9073 && XINT (pos
) < SCHARS (string
))
9075 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9077 orig_local_map
= map
;
9078 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9082 if (!NILP (map
) || !NILP (map2
))
9084 from_string
= string
;
9085 goto replay_sequence
;
9090 else if (CONSP (XCDR (key
))
9091 && CONSP (EVENT_START (key
))
9092 && CONSP (XCDR (EVENT_START (key
))))
9096 posn
= POSN_POSN (EVENT_START (key
));
9097 /* Handle menu-bar events:
9098 insert the dummy prefix event `menu-bar'. */
9099 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
9101 if (t
+ 1 >= bufsize
)
9102 error ("Key sequence too long");
9106 /* Zap the position in key, so we know that we've
9107 expanded it, and don't try to do so again. */
9108 POSN_SET_POSN (EVENT_START (key
),
9109 Fcons (posn
, Qnil
));
9112 goto replay_sequence
;
9114 else if (CONSP (posn
))
9116 /* We're looking at the second event of a
9117 sequence which we expanded before. Set
9118 last_real_key_start appropriately. */
9119 if (last_real_key_start
== t
&& t
> 0)
9120 last_real_key_start
= t
- 1;
9125 /* We have finally decided that KEY is something we might want
9127 first_binding
= (follow_key (key
,
9128 nmaps
- first_binding
,
9129 submaps
+ first_binding
,
9130 defs
+ first_binding
,
9131 submaps
+ first_binding
)
9134 /* If KEY wasn't bound, we'll try some fallbacks. */
9135 if (first_binding
< nmaps
)
9136 /* This is needed for the following scenario:
9137 event 0: a down-event that gets dropped by calling replay_key.
9138 event 1: some normal prefix like C-h.
9139 After event 0, first_unbound is 0, after event 1 fkey.start
9140 and keytran.start are both 1, so when we see that C-h is bound,
9141 we need to update first_unbound. */
9142 first_unbound
= max (t
+ 1, first_unbound
);
9147 /* Remember the position to put an upper bound on fkey.start. */
9148 first_unbound
= min (t
, first_unbound
);
9150 head
= EVENT_HEAD (key
);
9151 if (help_char_p (head
) && t
> 0)
9153 read_key_sequence_cmd
= Vprefix_help_command
;
9155 last_nonmenu_event
= key
;
9156 /* The Microsoft C compiler can't handle the goto that
9164 Lisp_Object breakdown
;
9167 breakdown
= parse_modifiers (head
);
9168 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9169 /* Attempt to reduce an unbound mouse event to a simpler
9170 event that is bound:
9171 Drags reduce to clicks.
9172 Double-clicks reduce to clicks.
9173 Triple-clicks reduce to double-clicks, then to clicks.
9174 Down-clicks are eliminated.
9175 Double-downs reduce to downs, then are eliminated.
9176 Triple-downs reduce to double-downs, then to downs,
9177 then are eliminated. */
9178 if (modifiers
& (down_modifier
| drag_modifier
9179 | double_modifier
| triple_modifier
))
9181 while (modifiers
& (down_modifier
| drag_modifier
9182 | double_modifier
| triple_modifier
))
9184 Lisp_Object new_head
, new_click
;
9185 if (modifiers
& triple_modifier
)
9186 modifiers
^= (double_modifier
| triple_modifier
);
9187 else if (modifiers
& double_modifier
)
9188 modifiers
&= ~double_modifier
;
9189 else if (modifiers
& drag_modifier
)
9190 modifiers
&= ~drag_modifier
;
9193 /* Dispose of this `down' event by simply jumping
9194 back to replay_key, to get another event.
9196 Note that if this event came from mock input,
9197 then just jumping back to replay_key will just
9198 hand it to us again. So we have to wipe out any
9201 We could delete keybuf[t] and shift everything
9202 after that to the left by one spot, but we'd also
9203 have to fix up any variable that points into
9204 keybuf, and shifting isn't really necessary
9207 Adding prefixes for non-textual mouse clicks
9208 creates two characters of mock input, and both
9209 must be thrown away. If we're only looking at
9210 the prefix now, we can just jump back to
9211 replay_key. On the other hand, if we've already
9212 processed the prefix, and now the actual click
9213 itself is giving us trouble, then we've lost the
9214 state of the keymaps we want to backtrack to, and
9215 we need to replay the whole sequence to rebuild
9218 Beyond that, only function key expansion could
9219 create more than two keys, but that should never
9220 generate mouse events, so it's okay to zero
9221 mock_input in that case too.
9223 FIXME: The above paragraph seems just plain
9224 wrong, if you consider things like
9225 xterm-mouse-mode. -stef
9227 Isn't this just the most wonderful code ever? */
9229 /* If mock_input > t + 1, the above simplification
9230 will actually end up dropping keys on the floor.
9231 This is probably OK for now, but even
9232 if mock_input <= t + 1, we need to adjust fkey
9234 Typical case [header-line down-mouse-N]:
9235 mock_input = 2, t = 1, fkey.end = 1,
9236 last_real_key_start = 0. */
9237 if (fkey
.end
> last_real_key_start
)
9239 fkey
.end
= fkey
.start
9240 = min (last_real_key_start
, fkey
.start
);
9241 fkey
.map
= fkey
.parent
;
9242 if (keytran
.end
> last_real_key_start
)
9244 keytran
.end
= keytran
.start
9245 = min (last_real_key_start
, keytran
.start
);
9246 keytran
.map
= keytran
.parent
;
9249 if (t
== last_real_key_start
)
9256 mock_input
= last_real_key_start
;
9257 goto replay_sequence
;
9262 = apply_modifiers (modifiers
, XCAR (breakdown
));
9264 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
9266 /* Look for a binding for this new key. follow_key
9267 promises that it didn't munge submaps the
9268 last time we called it, since key was unbound. */
9270 = (follow_key (new_click
,
9271 nmaps
- local_first_binding
,
9272 submaps
+ local_first_binding
,
9273 defs
+ local_first_binding
,
9274 submaps
+ local_first_binding
)
9275 + local_first_binding
);
9277 /* If that click is bound, go for it. */
9278 if (first_binding
< nmaps
)
9283 /* Otherwise, we'll leave key set to the drag event. */
9290 /* Normally, last_nonmenu_event gets the previous key we read.
9291 But when a mouse popup menu is being used,
9292 we don't update last_nonmenu_event; it continues to hold the mouse
9293 event that preceded the first level of menu. */
9294 if (!used_mouse_menu
)
9295 last_nonmenu_event
= key
;
9297 /* Record what part of this_command_keys is the current key sequence. */
9298 this_single_command_key_start
= this_command_key_count
- t
;
9300 if (first_binding
< nmaps
&& NILP (submaps
[first_binding
]))
9301 /* There is a binding and it's not a prefix.
9302 There is thus no function-key in this sequence.
9303 Moving fkey.start is important in this case to allow keytran.start
9304 to go over the sequence before we return (since we keep the
9305 invariant that keytran.end <= fkey.start). */
9308 (fkey
.start
= fkey
.end
= t
, fkey
.map
= fkey
.parent
);
9311 /* If the sequence is unbound, see if we can hang a function key
9312 off the end of it. */
9313 /* Continue scan from fkey.end until we find a bound suffix. */
9314 while (fkey
.end
< t
)
9316 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9319 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9320 done
= keyremap_step (keybuf
, bufsize
, &fkey
,
9321 max (t
, mock_input
),
9322 /* If there's a binding (i.e.
9323 first_binding >= nmaps) we don't want
9324 to apply this function-key-mapping. */
9325 fkey
.end
+ 1 == t
&& first_binding
>= nmaps
,
9330 mock_input
= diff
+ max (t
, mock_input
);
9331 goto replay_sequence
;
9335 /* Look for this sequence in key-translation-map.
9336 Scan from keytran.end until we find a bound suffix. */
9337 while (keytran
.end
< fkey
.start
)
9339 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9342 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9343 done
= keyremap_step (keybuf
, bufsize
, &keytran
, max (t
, mock_input
),
9348 mock_input
= diff
+ max (t
, mock_input
);
9349 /* Adjust the function-key-map counters. */
9353 goto replay_sequence
;
9357 /* If KEY is not defined in any of the keymaps,
9358 and cannot be part of a function key or translation,
9359 and is an upper case letter
9360 use the corresponding lower-case letter instead. */
9361 if (first_binding
>= nmaps
9362 && fkey
.start
>= t
&& keytran
.start
>= t
9364 && ((CHARACTERP (make_number (XINT (key
) & ~CHAR_MODIFIER_MASK
))
9365 && UPPERCASEP (XINT (key
) & ~CHAR_MODIFIER_MASK
))
9366 || (XINT (key
) & shift_modifier
)))
9368 Lisp_Object new_key
;
9370 original_uppercase
= key
;
9371 original_uppercase_position
= t
- 1;
9373 if (XINT (key
) & shift_modifier
)
9374 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
9376 XSETINT (new_key
, (DOWNCASE (XINT (key
) & ~CHAR_MODIFIER_MASK
)
9377 | (XINT (key
) & ~CHAR_MODIFIER_MASK
)));
9379 /* We have to do this unconditionally, regardless of whether
9380 the lower-case char is defined in the keymaps, because they
9381 might get translated through function-key-map. */
9382 keybuf
[t
- 1] = new_key
;
9383 mock_input
= max (t
, mock_input
);
9385 goto replay_sequence
;
9387 /* If KEY is not defined in any of the keymaps,
9388 and cannot be part of a function key or translation,
9389 and is a shifted function key,
9390 use the corresponding unshifted function key instead. */
9391 if (first_binding
>= nmaps
9392 && fkey
.start
>= t
&& keytran
.start
>= t
9395 Lisp_Object breakdown
;
9398 breakdown
= parse_modifiers (key
);
9399 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9400 if (modifiers
& shift_modifier
)
9402 Lisp_Object new_key
;
9404 original_uppercase
= key
;
9405 original_uppercase_position
= t
- 1;
9407 modifiers
&= ~shift_modifier
;
9408 new_key
= apply_modifiers (modifiers
,
9411 keybuf
[t
- 1] = new_key
;
9412 mock_input
= max (t
, mock_input
);
9413 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
9414 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
9416 goto replay_sequence
;
9422 read_key_sequence_cmd
= (first_binding
< nmaps
9423 ? defs
[first_binding
]
9426 unread_switch_frame
= delayed_switch_frame
;
9427 unbind_to (count
, Qnil
);
9429 /* Don't downcase the last character if the caller says don't.
9430 Don't downcase it if the result is undefined, either. */
9431 if ((dont_downcase_last
|| first_binding
>= nmaps
)
9432 && t
- 1 == original_uppercase_position
)
9433 keybuf
[t
- 1] = original_uppercase
;
9435 /* Occasionally we fabricate events, perhaps by expanding something
9436 according to function-key-map, or by adding a prefix symbol to a
9437 mouse click in the scroll bar or modeline. In this cases, return
9438 the entire generated key sequence, even if we hit an unbound
9439 prefix or a definition before the end. This means that you will
9440 be able to push back the event properly, and also means that
9441 read-key-sequence will always return a logical unit.
9444 for (; t
< mock_input
; t
++)
9446 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
9447 && NILP (Fzerop (Vecho_keystrokes
)))
9448 echo_char (keybuf
[t
]);
9449 add_command_key (keybuf
[t
]);
9458 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 5, 0,
9459 doc
: /* Read a sequence of keystrokes and return as a string or vector.
9460 The sequence is sufficient to specify a non-prefix command in the
9461 current local and global maps.
9463 First arg PROMPT is a prompt string. If nil, do not prompt specially.
9464 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos
9465 as a continuation of the previous key.
9467 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not
9468 convert the last event to lower case. (Normally any upper case event
9469 is converted to lower case if the original event is undefined and the lower
9470 case equivalent is defined.) A non-nil value is appropriate for reading
9471 a key sequence to be defined.
9473 A C-g typed while in this function is treated like any other character,
9474 and `quit-flag' is not set.
9476 If the key sequence starts with a mouse click, then the sequence is read
9477 using the keymaps of the buffer of the window clicked in, not the buffer
9478 of the selected window as normal.
9480 `read-key-sequence' drops unbound button-down events, since you normally
9481 only care about the click or drag events which follow them. If a drag
9482 or multi-click event is unbound, but the corresponding click event would
9483 be bound, `read-key-sequence' turns the event into a click event at the
9484 drag's starting position. This means that you don't have to distinguish
9485 between click and drag, double, or triple events unless you want to.
9487 `read-key-sequence' prefixes mouse events on mode lines, the vertical
9488 lines separating windows, and scroll bars with imaginary keys
9489 `mode-line', `vertical-line', and `vertical-scroll-bar'.
9491 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this
9492 function will process a switch-frame event if the user switches frames
9493 before typing anything. If the user switches frames in the middle of a
9494 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME
9495 is nil, then the event will be put off until after the current key sequence.
9497 `read-key-sequence' checks `function-key-map' for function key
9498 sequences, where they wouldn't conflict with ordinary bindings. See
9499 `function-key-map' for more details.
9501 The optional fifth argument COMMAND-LOOP, if non-nil, means
9502 that this key sequence is being read by something that will
9503 read commands one after another. It should be nil if the caller
9504 will read just one key sequence. */)
9505 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9507 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9508 Lisp_Object can_return_switch_frame
, command_loop
;
9510 Lisp_Object keybuf
[30];
9512 struct gcpro gcpro1
;
9513 int count
= SPECPDL_INDEX ();
9516 CHECK_STRING (prompt
);
9519 specbind (Qinput_method_exit_on_first_char
,
9520 (NILP (command_loop
) ? Qt
: Qnil
));
9521 specbind (Qinput_method_use_echo_area
,
9522 (NILP (command_loop
) ? Qt
: Qnil
));
9524 bzero (keybuf
, sizeof keybuf
);
9526 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9528 if (NILP (continue_echo
))
9530 this_command_key_count
= 0;
9531 this_command_key_count_reset
= 0;
9532 this_single_command_key_start
= 0;
9535 #ifdef HAVE_X_WINDOWS
9536 if (display_hourglass_p
)
9537 cancel_hourglass ();
9540 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9541 prompt
, ! NILP (dont_downcase_last
),
9542 ! NILP (can_return_switch_frame
), 0);
9544 #if 0 /* The following is fine for code reading a key sequence and
9545 then proceeding with a lenghty computation, but it's not good
9546 for code reading keys in a loop, like an input method. */
9547 #ifdef HAVE_X_WINDOWS
9548 if (display_hourglass_p
)
9559 return unbind_to (count
, make_event_array (i
, keybuf
));
9562 DEFUN ("read-key-sequence-vector", Fread_key_sequence_vector
,
9563 Sread_key_sequence_vector
, 1, 5, 0,
9564 doc
: /* Like `read-key-sequence' but always return a vector. */)
9565 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9567 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9568 Lisp_Object can_return_switch_frame
, command_loop
;
9570 Lisp_Object keybuf
[30];
9572 struct gcpro gcpro1
;
9573 int count
= SPECPDL_INDEX ();
9576 CHECK_STRING (prompt
);
9579 specbind (Qinput_method_exit_on_first_char
,
9580 (NILP (command_loop
) ? Qt
: Qnil
));
9581 specbind (Qinput_method_use_echo_area
,
9582 (NILP (command_loop
) ? Qt
: Qnil
));
9584 bzero (keybuf
, sizeof keybuf
);
9586 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9588 if (NILP (continue_echo
))
9590 this_command_key_count
= 0;
9591 this_command_key_count_reset
= 0;
9592 this_single_command_key_start
= 0;
9595 #ifdef HAVE_X_WINDOWS
9596 if (display_hourglass_p
)
9597 cancel_hourglass ();
9600 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9601 prompt
, ! NILP (dont_downcase_last
),
9602 ! NILP (can_return_switch_frame
), 0);
9604 #ifdef HAVE_X_WINDOWS
9605 if (display_hourglass_p
)
9615 return unbind_to (count
, Fvector (i
, keybuf
));
9618 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
9619 doc
: /* Execute CMD as an editor command.
9620 CMD must be a symbol that satisfies the `commandp' predicate.
9621 Optional second arg RECORD-FLAG non-nil
9622 means unconditionally put this command in `command-history'.
9623 Otherwise, that is done only if an arg is read using the minibuffer.
9624 The argument KEYS specifies the value to use instead of (this-command-keys)
9625 when reading the arguments; if it is nil, (this-command-keys) is used.
9626 The argument SPECIAL, if non-nil, means that this command is executing
9627 a special event, so ignore the prefix argument and don't clear it. */)
9628 (cmd
, record_flag
, keys
, special
)
9629 Lisp_Object cmd
, record_flag
, keys
, special
;
9631 register Lisp_Object final
;
9632 register Lisp_Object tem
;
9633 Lisp_Object prefixarg
;
9634 struct backtrace backtrace
;
9635 extern int debug_on_next_call
;
9637 debug_on_next_call
= 0;
9641 prefixarg
= current_kboard
->Vprefix_arg
;
9642 Vcurrent_prefix_arg
= prefixarg
;
9643 current_kboard
->Vprefix_arg
= Qnil
;
9650 tem
= Fget (cmd
, Qdisabled
);
9651 if (!NILP (tem
) && !NILP (Vrun_hooks
))
9653 tem
= Fsymbol_value (Qdisabled_command_function
);
9655 return call1 (Vrun_hooks
, Qdisabled_command_function
);
9661 final
= Findirect_function (cmd
);
9663 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
9665 struct gcpro gcpro1
, gcpro2
;
9667 GCPRO2 (cmd
, prefixarg
);
9668 do_autoload (final
, cmd
);
9675 if (STRINGP (final
) || VECTORP (final
))
9677 /* If requested, place the macro in the command history. For
9678 other sorts of commands, call-interactively takes care of
9680 if (!NILP (record_flag
))
9683 = Fcons (Fcons (Qexecute_kbd_macro
,
9684 Fcons (final
, Fcons (prefixarg
, Qnil
))),
9687 /* Don't keep command history around forever. */
9688 if (NUMBERP (Vhistory_length
) && XINT (Vhistory_length
) > 0)
9690 tem
= Fnthcdr (Vhistory_length
, Vcommand_history
);
9692 XSETCDR (tem
, Qnil
);
9696 return Fexecute_kbd_macro (final
, prefixarg
, Qnil
);
9699 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
9701 backtrace
.next
= backtrace_list
;
9702 backtrace_list
= &backtrace
;
9703 backtrace
.function
= &Qcall_interactively
;
9704 backtrace
.args
= &cmd
;
9705 backtrace
.nargs
= 1;
9706 backtrace
.evalargs
= 0;
9707 backtrace
.debug_on_exit
= 0;
9709 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
9711 backtrace_list
= backtrace
.next
;
9719 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
9721 doc
: /* Read function name, then read its arguments and call it. */)
9723 Lisp_Object prefixarg
;
9725 Lisp_Object function
;
9727 int saved_last_point_position
;
9728 Lisp_Object saved_keys
, saved_last_point_position_buffer
;
9729 Lisp_Object bindings
, value
;
9730 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9731 #ifdef HAVE_X_WINDOWS
9732 /* The call to Fcompleting_read wil start and cancel the hourglass,
9733 but if the hourglass was already scheduled, this means that no
9734 hourglass will be shown for the actual M-x command itself.
9735 So we restart it if it is already scheduled. Note that checking
9736 hourglass_shown_p is not enough, normally the hourglass is not shown,
9737 just scheduled to be shown. */
9738 int hstarted
= hourglass_started ();
9741 saved_keys
= Fvector (this_command_key_count
,
9742 XVECTOR (this_command_keys
)->contents
);
9743 saved_last_point_position_buffer
= last_point_position_buffer
;
9744 saved_last_point_position
= last_point_position
;
9746 GCPRO3 (saved_keys
, prefixarg
, saved_last_point_position_buffer
);
9748 if (EQ (prefixarg
, Qminus
))
9750 else if (CONSP (prefixarg
) && XINT (XCAR (prefixarg
)) == 4)
9751 strcpy (buf
, "C-u ");
9752 else if (CONSP (prefixarg
) && INTEGERP (XCAR (prefixarg
)))
9753 sprintf (buf
, "%ld ", (long) XINT (XCAR (prefixarg
)));
9754 else if (INTEGERP (prefixarg
))
9755 sprintf (buf
, "%ld ", (long) XINT (prefixarg
));
9757 /* This isn't strictly correct if execute-extended-command
9758 is bound to anything else. Perhaps it should use
9759 this_command_keys? */
9760 strcat (buf
, "M-x ");
9762 /* Prompt with buf, and then read a string, completing from and
9763 restricting to the set of all defined commands. Don't provide
9764 any initial input. Save the command read on the extended-command
9766 function
= Fcompleting_read (build_string (buf
),
9767 Vobarray
, Qcommandp
,
9768 Qt
, Qnil
, Qextended_command_history
, Qnil
,
9771 #ifdef HAVE_X_WINDOWS
9772 if (hstarted
) start_hourglass ();
9775 if (STRINGP (function
) && SCHARS (function
) == 0)
9776 error ("No command name given");
9778 /* Set this_command_keys to the concatenation of saved_keys and
9779 function, followed by a RET. */
9784 this_command_key_count
= 0;
9785 this_command_key_count_reset
= 0;
9786 this_single_command_key_start
= 0;
9788 keys
= XVECTOR (saved_keys
)->contents
;
9789 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
9790 add_command_key (keys
[i
]);
9792 for (i
= 0; i
< SCHARS (function
); i
++)
9793 add_command_key (Faref (function
, make_number (i
)));
9795 add_command_key (make_number ('\015'));
9798 last_point_position
= saved_last_point_position
;
9799 last_point_position_buffer
= saved_last_point_position_buffer
;
9803 function
= Fintern (function
, Qnil
);
9804 current_kboard
->Vprefix_arg
= prefixarg
;
9805 Vthis_command
= function
;
9806 real_this_command
= function
;
9808 /* If enabled, show which key runs this command. */
9809 if (!NILP (Vsuggest_key_bindings
)
9810 && NILP (Vexecuting_kbd_macro
)
9811 && SYMBOLP (function
))
9812 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
9818 GCPRO2 (bindings
, value
);
9819 value
= Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
9821 /* If the command has a key binding, print it now. */
9822 if (!NILP (bindings
)
9823 && ! (VECTORP (bindings
) && EQ (Faref (bindings
, make_number (0)),
9826 /* But first wait, and skip the message if there is input. */
9828 if (!NILP (echo_area_buffer
[0]))
9829 /* This command displayed something in the echo area;
9830 so wait a few seconds, then display our suggestion message. */
9831 delay_time
= (NUMBERP (Vsuggest_key_bindings
)
9832 ? XINT (Vsuggest_key_bindings
) : 2);
9834 /* This command left the echo area empty,
9835 so display our message immediately. */
9838 if (!NILP (Fsit_for (make_number (delay_time
), Qnil
, Qnil
))
9839 && ! CONSP (Vunread_command_events
))
9841 Lisp_Object binding
;
9843 int message_p
= push_message ();
9844 int count
= SPECPDL_INDEX ();
9846 record_unwind_protect (pop_message_unwind
, Qnil
);
9847 binding
= Fkey_description (bindings
, Qnil
);
9850 = (char *) alloca (SCHARS (SYMBOL_NAME (function
))
9853 sprintf (newmessage
, "You can run the command `%s' with %s",
9854 SDATA (SYMBOL_NAME (function
)),
9856 message2_nolog (newmessage
,
9857 strlen (newmessage
),
9858 STRING_MULTIBYTE (binding
));
9859 if (!NILP (Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
9860 ? Vsuggest_key_bindings
: make_number (2)),
9865 unbind_to (count
, Qnil
);
9869 RETURN_UNGCPRO (value
);
9873 /* Return nonzero if input events are pending. */
9876 detect_input_pending ()
9879 get_input_pending (&input_pending
, 0);
9881 return input_pending
;
9884 /* Return nonzero if input events other than mouse movements are
9888 detect_input_pending_ignore_squeezables ()
9891 get_input_pending (&input_pending
, READABLE_EVENTS_IGNORE_SQUEEZABLES
);
9893 return input_pending
;
9896 /* Return nonzero if input events are pending, and run any pending timers. */
9899 detect_input_pending_run_timers (do_display
)
9902 int old_timers_run
= timers_run
;
9905 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
9907 if (old_timers_run
!= timers_run
&& do_display
)
9909 redisplay_preserve_echo_area (8);
9910 /* The following fixes a bug when using lazy-lock with
9911 lazy-lock-defer-on-the-fly set to t, i.e. when fontifying
9912 from an idle timer function. The symptom of the bug is that
9913 the cursor sometimes doesn't become visible until the next X
9914 event is processed. --gerd. */
9916 rif
->flush_display (NULL
);
9919 return input_pending
;
9922 /* This is called in some cases before a possible quit.
9923 It cases the next call to detect_input_pending to recompute input_pending.
9924 So calling this function unnecessarily can't do any harm. */
9927 clear_input_pending ()
9932 /* Return nonzero if there are pending requeued events.
9933 This isn't used yet. The hope is to make wait_reading_process_output
9934 call it, and return if it runs Lisp code that unreads something.
9935 The problem is, kbd_buffer_get_event needs to be fixed to know what
9936 to do in that case. It isn't trivial. */
9939 requeued_events_pending_p ()
9941 return (!NILP (Vunread_command_events
) || unread_command_char
!= -1);
9945 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
9946 doc
: /* Return t if command input is currently available with no wait.
9947 Actually, the value is nil only if we can be sure that no input is available;
9948 if there is a doubt, the value is t. */)
9951 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
9954 get_input_pending (&input_pending
,
9955 READABLE_EVENTS_DO_TIMERS_NOW
9956 | READABLE_EVENTS_FILTER_EVENTS
);
9957 return input_pending
> 0 ? Qt
: Qnil
;
9960 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
9961 doc
: /* Return vector of last 100 events, not counting those from keyboard macros. */)
9964 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
9967 if (total_keys
< NUM_RECENT_KEYS
)
9968 return Fvector (total_keys
, keys
);
9971 val
= Fvector (NUM_RECENT_KEYS
, keys
);
9972 bcopy (keys
+ recent_keys_index
,
9973 XVECTOR (val
)->contents
,
9974 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
9976 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
9977 recent_keys_index
* sizeof (Lisp_Object
));
9982 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
9983 doc
: /* Return the key sequence that invoked this command.
9984 However, if the command has called `read-key-sequence', it returns
9985 the last key sequence that has been read.
9986 The value is a string or a vector. */)
9989 return make_event_array (this_command_key_count
,
9990 XVECTOR (this_command_keys
)->contents
);
9993 DEFUN ("this-command-keys-vector", Fthis_command_keys_vector
, Sthis_command_keys_vector
, 0, 0, 0,
9994 doc
: /* Return the key sequence that invoked this command, as a vector.
9995 However, if the command has called `read-key-sequence', it returns
9996 the last key sequence that has been read. */)
9999 return Fvector (this_command_key_count
,
10000 XVECTOR (this_command_keys
)->contents
);
10003 DEFUN ("this-single-command-keys", Fthis_single_command_keys
,
10004 Sthis_single_command_keys
, 0, 0, 0,
10005 doc
: /* Return the key sequence that invoked this command.
10006 More generally, it returns the last key sequence read, either by
10007 the command loop or by `read-key-sequence'.
10008 Unlike `this-command-keys', this function's value
10009 does not include prefix arguments.
10010 The value is always a vector. */)
10013 return Fvector (this_command_key_count
10014 - this_single_command_key_start
,
10015 (XVECTOR (this_command_keys
)->contents
10016 + this_single_command_key_start
));
10019 DEFUN ("this-single-command-raw-keys", Fthis_single_command_raw_keys
,
10020 Sthis_single_command_raw_keys
, 0, 0, 0,
10021 doc
: /* Return the raw events that were read for this command.
10022 More generally, it returns the last key sequence read, either by
10023 the command loop or by `read-key-sequence'.
10024 Unlike `this-single-command-keys', this function's value
10025 shows the events before all translations (except for input methods).
10026 The value is always a vector. */)
10029 return Fvector (raw_keybuf_count
,
10030 (XVECTOR (raw_keybuf
)->contents
));
10033 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
10034 Sreset_this_command_lengths
, 0, 0, 0,
10035 doc
: /* Make the unread events replace the last command and echo.
10036 Used in `universal-argument-other-key'.
10038 `universal-argument-other-key' rereads the event just typed.
10039 It then gets translated through `function-key-map'.
10040 The translated event has to replace the real events,
10041 both in the value of (this-command-keys) and in echoing.
10042 To achieve this, `universal-argument-other-key' calls
10043 `reset-this-command-lengths', which discards the record of reading
10044 these events the first time. */)
10047 this_command_key_count
= before_command_key_count
;
10048 if (this_command_key_count
< this_single_command_key_start
)
10049 this_single_command_key_start
= this_command_key_count
;
10051 echo_truncate (before_command_echo_length
);
10053 /* Cause whatever we put into unread-command-events
10054 to echo as if it were being freshly read from the keyboard. */
10055 this_command_key_count_reset
= 1;
10060 DEFUN ("clear-this-command-keys", Fclear_this_command_keys
,
10061 Sclear_this_command_keys
, 0, 1, 0,
10062 doc
: /* Clear out the vector that `this-command-keys' returns.
10063 Also clear the record of the last 100 events, unless optional arg
10064 KEEP-RECORD is non-nil. */)
10066 Lisp_Object keep_record
;
10070 this_command_key_count
= 0;
10071 this_command_key_count_reset
= 0;
10073 if (NILP (keep_record
))
10075 for (i
= 0; i
< XVECTOR (recent_keys
)->size
; ++i
)
10076 XVECTOR (recent_keys
)->contents
[i
] = Qnil
;
10078 recent_keys_index
= 0;
10083 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
10084 doc
: /* Return the current depth in recursive edits. */)
10088 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
10092 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
10093 "FOpen dribble file: ",
10094 doc
: /* Start writing all keyboard characters to a dribble file called FILE.
10095 If FILE is nil, close any open dribble file. */)
10106 file
= Fexpand_file_name (file
, Qnil
);
10107 dribble
= fopen (SDATA (file
), "w");
10109 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
10114 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
10115 doc
: /* Discard the contents of the terminal input buffer.
10116 Also end any kbd macro being defined. */)
10119 if (!NILP (current_kboard
->defining_kbd_macro
))
10121 /* Discard the last command from the macro. */
10122 Fcancel_kbd_macro_events ();
10126 update_mode_lines
++;
10128 Vunread_command_events
= Qnil
;
10129 unread_command_char
= -1;
10131 discard_tty_input ();
10133 kbd_fetch_ptr
= kbd_store_ptr
;
10139 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
10140 doc
: /* Stop Emacs and return to superior process. You can resume later.
10141 If `cannot-suspend' is non-nil, or if the system doesn't support job
10142 control, run a subshell instead.
10144 If optional arg STUFFSTRING is non-nil, its characters are stuffed
10145 to be read as terminal input by Emacs's parent, after suspension.
10147 Before suspending, run the normal hook `suspend-hook'.
10148 After resumption run the normal hook `suspend-resume-hook'.
10150 Some operating systems cannot stop the Emacs process and resume it later.
10151 On such systems, Emacs starts a subshell instead of suspending. */)
10153 Lisp_Object stuffstring
;
10155 int count
= SPECPDL_INDEX ();
10156 int old_height
, old_width
;
10158 struct gcpro gcpro1
;
10160 if (!NILP (stuffstring
))
10161 CHECK_STRING (stuffstring
);
10163 /* Run the functions in suspend-hook. */
10164 if (!NILP (Vrun_hooks
))
10165 call1 (Vrun_hooks
, intern ("suspend-hook"));
10167 GCPRO1 (stuffstring
);
10168 get_frame_size (&old_width
, &old_height
);
10169 reset_sys_modes ();
10170 /* sys_suspend can get an error if it tries to fork a subshell
10171 and the system resources aren't available for that. */
10172 record_unwind_protect ((Lisp_Object (*) P_ ((Lisp_Object
))) init_sys_modes
,
10174 stuff_buffered_input (stuffstring
);
10175 if (cannot_suspend
)
10179 unbind_to (count
, Qnil
);
10181 /* Check if terminal/window size has changed.
10182 Note that this is not useful when we are running directly
10183 with a window system; but suspend should be disabled in that case. */
10184 get_frame_size (&width
, &height
);
10185 if (width
!= old_width
|| height
!= old_height
)
10186 change_frame_size (SELECTED_FRAME (), height
, width
, 0, 0, 0);
10188 /* Run suspend-resume-hook. */
10189 if (!NILP (Vrun_hooks
))
10190 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
10196 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
10197 Then in any case stuff anything Emacs has read ahead and not used. */
10200 stuff_buffered_input (stuffstring
)
10201 Lisp_Object stuffstring
;
10203 #ifdef SIGTSTP /* stuff_char is defined if SIGTSTP. */
10204 register unsigned char *p
;
10206 if (STRINGP (stuffstring
))
10208 register int count
;
10210 p
= SDATA (stuffstring
);
10211 count
= SBYTES (stuffstring
);
10212 while (count
-- > 0)
10217 /* Anything we have read ahead, put back for the shell to read. */
10218 /* ?? What should this do when we have multiple keyboards??
10219 Should we ignore anything that was typed in at the "wrong" kboard?
10221 rms: we should stuff everything back into the kboard
10223 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
10226 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
10227 kbd_fetch_ptr
= kbd_buffer
;
10228 if (kbd_fetch_ptr
->kind
== ASCII_KEYSTROKE_EVENT
)
10229 stuff_char (kbd_fetch_ptr
->code
);
10231 clear_event (kbd_fetch_ptr
);
10235 #endif /* SIGTSTP */
10239 set_waiting_for_input (time_to_clear
)
10240 EMACS_TIME
*time_to_clear
;
10242 input_available_clear_time
= time_to_clear
;
10244 /* Tell interrupt_signal to throw back to read_char, */
10245 waiting_for_input
= 1;
10247 /* If interrupt_signal was called before and buffered a C-g,
10248 make it run again now, to avoid timing error. */
10249 if (!NILP (Vquit_flag
))
10250 quit_throw_to_read_char ();
10254 clear_waiting_for_input ()
10256 /* Tell interrupt_signal not to throw back to read_char, */
10257 waiting_for_input
= 0;
10258 input_available_clear_time
= 0;
10261 /* This routine is called at interrupt level in response to C-g.
10263 If interrupt_input, this is the handler for SIGINT. Otherwise, it
10264 is called from kbd_buffer_store_event, in handling SIGIO or
10267 If `waiting_for_input' is non zero, then unless `echoing' is
10268 nonzero, immediately throw back to read_char.
10270 Otherwise it sets the Lisp variable quit-flag not-nil. This causes
10271 eval to throw, when it gets a chance. If quit-flag is already
10272 non-nil, it stops the job right away. */
10275 interrupt_signal (signalnum
) /* If we don't have an argument, */
10276 int signalnum
; /* some compilers complain in signal calls. */
10279 /* Must preserve main program's value of errno. */
10280 int old_errno
= errno
;
10281 struct frame
*sf
= SELECTED_FRAME ();
10283 #if defined (USG) && !defined (POSIX_SIGNALS)
10284 if (!read_socket_hook
&& NILP (Vwindow_system
))
10286 /* USG systems forget handlers when they are used;
10287 must reestablish each time */
10288 signal (SIGINT
, interrupt_signal
);
10289 signal (SIGQUIT
, interrupt_signal
);
10293 SIGNAL_THREAD_CHECK (signalnum
);
10296 if (!NILP (Vquit_flag
)
10297 && (FRAME_TERMCAP_P (sf
) || FRAME_MSDOS_P (sf
)))
10299 /* If SIGINT isn't blocked, don't let us be interrupted by
10300 another SIGINT, it might be harmful due to non-reentrancy
10301 in I/O functions. */
10302 sigblock (sigmask (SIGINT
));
10305 reset_sys_modes ();
10307 #ifdef SIGTSTP /* Support possible in later USG versions */
10309 * On systems which can suspend the current process and return to the original
10310 * shell, this command causes the user to end up back at the shell.
10311 * The "Auto-save" and "Abort" questions are not asked until
10312 * the user elects to return to emacs, at which point he can save the current
10313 * job and either dump core or continue.
10318 if (sys_suspend () == -1)
10320 printf ("Not running as a subprocess;\n");
10321 printf ("you can continue or abort.\n");
10323 #else /* not VMS */
10324 /* Perhaps should really fork an inferior shell?
10325 But that would not provide any way to get back
10326 to the original shell, ever. */
10327 printf ("No support for stopping a process on this operating system;\n");
10328 printf ("you can continue or abort.\n");
10329 #endif /* not VMS */
10330 #endif /* not SIGTSTP */
10332 /* We must remain inside the screen area when the internal terminal
10333 is used. Note that [Enter] is not echoed by dos. */
10336 /* It doesn't work to autosave while GC is in progress;
10337 the code used for auto-saving doesn't cope with the mark bit. */
10338 if (!gc_in_progress
)
10340 printf ("Auto-save? (y or n) ");
10342 if (((c
= getchar ()) & ~040) == 'Y')
10344 Fdo_auto_save (Qt
, Qnil
);
10346 printf ("\r\nAuto-save done");
10347 #else /* not MSDOS */
10348 printf ("Auto-save done\n");
10349 #endif /* not MSDOS */
10351 while (c
!= '\n') c
= getchar ();
10355 /* During GC, it must be safe to reenable quitting again. */
10356 Vinhibit_quit
= Qnil
;
10359 #endif /* not MSDOS */
10360 printf ("Garbage collection in progress; cannot auto-save now\r\n");
10361 printf ("but will instead do a real quit after garbage collection ends\r\n");
10366 printf ("\r\nAbort? (y or n) ");
10367 #else /* not MSDOS */
10369 printf ("Abort (and enter debugger)? (y or n) ");
10370 #else /* not VMS */
10371 printf ("Abort (and dump core)? (y or n) ");
10372 #endif /* not VMS */
10373 #endif /* not MSDOS */
10375 if (((c
= getchar ()) & ~040) == 'Y')
10377 while (c
!= '\n') c
= getchar ();
10379 printf ("\r\nContinuing...\r\n");
10380 #else /* not MSDOS */
10381 printf ("Continuing...\n");
10382 #endif /* not MSDOS */
10389 /* If executing a function that wants to be interrupted out of
10390 and the user has not deferred quitting by binding `inhibit-quit'
10391 then quit right away. */
10392 if (immediate_quit
&& NILP (Vinhibit_quit
))
10394 struct gl_state_s saved
;
10395 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
10397 immediate_quit
= 0;
10400 GCPRO4 (saved
.object
, saved
.global_code
,
10401 saved
.current_syntax_table
, saved
.old_prop
);
10402 Fsignal (Qquit
, Qnil
);
10407 /* Else request quit when it's safe */
10411 if (waiting_for_input
&& !echoing
)
10412 quit_throw_to_read_char ();
10417 /* Handle a C-g by making read_char return C-g. */
10420 quit_throw_to_read_char ()
10423 /* Prevent another signal from doing this before we finish. */
10424 clear_waiting_for_input ();
10427 Vunread_command_events
= Qnil
;
10428 unread_command_char
= -1;
10430 #if 0 /* Currently, sit_for is called from read_char without turning
10431 off polling. And that can call set_waiting_for_input.
10432 It seems to be harmless. */
10433 #ifdef POLL_FOR_INPUT
10434 /* May be > 1 if in recursive minibuffer. */
10435 if (poll_suppress_count
== 0)
10439 if (FRAMEP (internal_last_event_frame
)
10440 && !EQ (internal_last_event_frame
, selected_frame
))
10441 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
10444 _longjmp (getcjmp
, 1);
10447 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
10448 doc
: /* Set mode of reading keyboard input.
10449 First arg INTERRUPT non-nil means use input interrupts;
10450 nil means use CBREAK mode.
10451 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal
10452 (no effect except in CBREAK mode).
10453 Third arg META t means accept 8-bit input (for a Meta key).
10454 META nil means ignore the top bit, on the assumption it is parity.
10455 Otherwise, accept 8-bit input and don't use the top bit for Meta.
10456 Optional fourth arg QUIT if non-nil specifies character to use for quitting.
10457 See also `current-input-mode'. */)
10458 (interrupt
, flow
, meta
, quit
)
10459 Lisp_Object interrupt
, flow
, meta
, quit
;
10462 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
10463 error ("set-input-mode: QUIT must be an ASCII character");
10465 #ifdef POLL_FOR_INPUT
10470 /* this causes startup screen to be restored and messes with the mouse */
10471 reset_sys_modes ();
10475 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10476 if (read_socket_hook
)
10478 /* When using X, don't give the user a real choice,
10479 because we haven't implemented the mechanisms to support it. */
10480 #ifdef NO_SOCK_SIGIO
10481 interrupt_input
= 0;
10482 #else /* not NO_SOCK_SIGIO */
10483 interrupt_input
= 1;
10484 #endif /* NO_SOCK_SIGIO */
10487 interrupt_input
= !NILP (interrupt
);
10488 #else /* not SIGIO */
10489 interrupt_input
= 0;
10490 #endif /* not SIGIO */
10492 /* Our VMS input only works by interrupts, as of now. */
10494 interrupt_input
= 1;
10497 flow_control
= !NILP (flow
);
10500 else if (EQ (meta
, Qt
))
10505 /* Don't let this value be out of range. */
10506 quit_char
= XINT (quit
) & (meta_key
? 0377 : 0177);
10512 #ifdef POLL_FOR_INPUT
10513 poll_suppress_count
= 1;
10519 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
10520 doc
: /* Return information about the way Emacs currently reads keyboard input.
10521 The value is a list of the form (INTERRUPT FLOW META QUIT), where
10522 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if
10523 nil, Emacs is using CBREAK mode.
10524 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the
10525 terminal; this does not apply if Emacs uses interrupt-driven input.
10526 META is t if accepting 8-bit input with 8th bit as Meta flag.
10527 META nil means ignoring the top bit, on the assumption it is parity.
10528 META is neither t nor nil if accepting 8-bit input and using
10529 all 8 bits as the character code.
10530 QUIT is the character Emacs currently uses to quit.
10531 The elements of this list correspond to the arguments of
10532 `set-input-mode'. */)
10535 Lisp_Object val
[4];
10537 val
[0] = interrupt_input
? Qt
: Qnil
;
10538 val
[1] = flow_control
? Qt
: Qnil
;
10539 val
[2] = meta_key
== 2 ? make_number (0) : meta_key
== 1 ? Qt
: Qnil
;
10540 XSETFASTINT (val
[3], quit_char
);
10542 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
10545 DEFUN ("posn-at-x-y", Fposn_at_x_y
, Sposn_at_x_y
, 2, 4, 0,
10546 doc
: /* Return position information for pixel coordinates X and Y.
10547 By default, X and Y are relative to text area of the selected window.
10548 Optional third arg FRAME-OR-WINDOW non-nil specifies frame or window.
10549 If optional fourth arg WHOLE is non-nil, X is relative to the left
10550 edge of the window.
10552 The return value is similar to a mouse click position:
10553 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10554 IMAGE (DX . DY) (WIDTH . HEIGHT))
10555 The `posn-' functions access elements of such lists. */)
10556 (x
, y
, frame_or_window
, whole
)
10557 Lisp_Object x
, y
, frame_or_window
, whole
;
10562 if (NILP (frame_or_window
))
10563 frame_or_window
= selected_window
;
10565 if (WINDOWP (frame_or_window
))
10569 CHECK_LIVE_WINDOW (frame_or_window
);
10571 w
= XWINDOW (frame_or_window
);
10572 XSETINT (x
, (WINDOW_TO_FRAME_PIXEL_X (w
, XINT (x
))
10574 ? window_box_left_offset (w
, TEXT_AREA
)
10575 : - (WINDOW_LEFT_SCROLL_BAR_COLS (w
)
10576 * WINDOW_FRAME_COLUMN_WIDTH (w
)))));
10577 XSETINT (y
, WINDOW_TO_FRAME_PIXEL_Y (w
, XINT (y
)));
10578 frame_or_window
= w
->frame
;
10581 CHECK_LIVE_FRAME (frame_or_window
);
10583 return make_lispy_position (XFRAME (frame_or_window
), &x
, &y
, 0);
10586 DEFUN ("posn-at-point", Fposn_at_point
, Sposn_at_point
, 0, 2, 0,
10587 doc
: /* Return position information for buffer POS in WINDOW.
10588 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
10590 Return nil if position is not visible in window. Otherwise,
10591 the return value is similar to that returned by `event-start' for
10592 a mouse click at the upper left corner of the glyph corresponding
10593 to the given buffer position:
10594 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10595 IMAGE (DX . DY) (WIDTH . HEIGHT))
10596 The `posn-' functions access elements of such lists. */)
10598 Lisp_Object pos
, window
;
10602 tem
= Fpos_visible_in_window_p (pos
, window
, Qt
);
10604 tem
= Fposn_at_x_y (XCAR (tem
), XCAR (XCDR (tem
)), window
, Qnil
);
10610 * Set up a new kboard object with reasonable initial values.
10616 kb
->Voverriding_terminal_local_map
= Qnil
;
10617 kb
->Vlast_command
= Qnil
;
10618 kb
->Vreal_last_command
= Qnil
;
10619 kb
->Vprefix_arg
= Qnil
;
10620 kb
->Vlast_prefix_arg
= Qnil
;
10621 kb
->kbd_queue
= Qnil
;
10622 kb
->kbd_queue_has_data
= 0;
10623 kb
->immediate_echo
= 0;
10624 kb
->echo_string
= Qnil
;
10625 kb
->echo_after_prompt
= -1;
10626 kb
->kbd_macro_buffer
= 0;
10627 kb
->kbd_macro_bufsize
= 0;
10628 kb
->defining_kbd_macro
= Qnil
;
10629 kb
->Vlast_kbd_macro
= Qnil
;
10630 kb
->reference_count
= 0;
10631 kb
->Vsystem_key_alist
= Qnil
;
10632 kb
->system_key_syms
= Qnil
;
10633 kb
->Vdefault_minibuffer_frame
= Qnil
;
10637 * Destroy the contents of a kboard object, but not the object itself.
10638 * We use this just before deleting it, or if we're going to initialize
10639 * it a second time.
10645 if (kb
->kbd_macro_buffer
)
10646 xfree (kb
->kbd_macro_buffer
);
10649 #ifdef MULTI_KBOARD
10651 /* Free KB and memory referenced from it. */
10659 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
10662 *kbp
= kb
->next_kboard
;
10664 /* Prevent a dangling reference to KB. */
10665 if (kb
== current_kboard
10666 && FRAMEP (selected_frame
)
10667 && FRAME_LIVE_P (XFRAME (selected_frame
)))
10669 current_kboard
= XFRAME (selected_frame
)->kboard
;
10670 if (current_kboard
== kb
)
10678 #endif /* MULTI_KBOARD */
10683 /* This is correct before outermost invocation of the editor loop */
10684 command_loop_level
= -1;
10685 immediate_quit
= 0;
10686 quit_char
= Ctl ('g');
10687 Vunread_command_events
= Qnil
;
10688 unread_command_char
= -1;
10689 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
10691 recent_keys_index
= 0;
10692 kbd_fetch_ptr
= kbd_buffer
;
10693 kbd_store_ptr
= kbd_buffer
;
10695 do_mouse_tracking
= Qnil
;
10699 /* This means that command_loop_1 won't try to select anything the first
10701 internal_last_event_frame
= Qnil
;
10702 Vlast_event_frame
= internal_last_event_frame
;
10704 #ifdef MULTI_KBOARD
10705 current_kboard
= initial_kboard
;
10707 wipe_kboard (current_kboard
);
10708 init_kboard (current_kboard
);
10710 if (!noninteractive
&& !read_socket_hook
&& NILP (Vwindow_system
))
10712 signal (SIGINT
, interrupt_signal
);
10713 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
10714 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
10715 SIGQUIT and we can't tell which one it will give us. */
10716 signal (SIGQUIT
, interrupt_signal
);
10717 #endif /* HAVE_TERMIO */
10719 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10721 if (!noninteractive
)
10722 signal (SIGIO
, input_available_signal
);
10725 /* Use interrupt input by default, if it works and noninterrupt input
10726 has deficiencies. */
10728 #ifdef INTERRUPT_INPUT
10729 interrupt_input
= 1;
10731 interrupt_input
= 0;
10734 /* Our VMS input only works by interrupts, as of now. */
10736 interrupt_input
= 1;
10742 if (keyboard_init_hook
)
10743 (*keyboard_init_hook
) ();
10745 #ifdef POLL_FOR_INPUT
10746 poll_suppress_count
= 1;
10751 /* At least provide an escape route since C-g doesn't work. */
10752 signal (SIGINT
, interrupt_signal
);
10756 /* This type's only use is in syms_of_keyboard, to initialize the
10757 event header symbols and put properties on them. */
10758 struct event_head
{
10764 struct event_head head_table
[] = {
10765 {&Qmouse_movement
, "mouse-movement", &Qmouse_movement
},
10766 {&Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
},
10767 {&Qswitch_frame
, "switch-frame", &Qswitch_frame
},
10768 {&Qdelete_frame
, "delete-frame", &Qdelete_frame
},
10769 {&Qiconify_frame
, "iconify-frame", &Qiconify_frame
},
10770 {&Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
},
10771 /* `select-window' should be handled just like `switch-frame'
10772 in read_key_sequence. */
10773 {&Qselect_window
, "select-window", &Qswitch_frame
}
10777 syms_of_keyboard ()
10779 Vpre_help_message
= Qnil
;
10780 staticpro (&Vpre_help_message
);
10782 Vlispy_mouse_stem
= build_string ("mouse");
10783 staticpro (&Vlispy_mouse_stem
);
10786 QCimage
= intern (":image");
10787 staticpro (&QCimage
);
10789 staticpro (&Qhelp_echo
);
10790 Qhelp_echo
= intern ("help-echo");
10792 staticpro (&item_properties
);
10793 item_properties
= Qnil
;
10795 staticpro (&tool_bar_item_properties
);
10796 tool_bar_item_properties
= Qnil
;
10797 staticpro (&tool_bar_items_vector
);
10798 tool_bar_items_vector
= Qnil
;
10800 staticpro (&real_this_command
);
10801 real_this_command
= Qnil
;
10803 Qtimer_event_handler
= intern ("timer-event-handler");
10804 staticpro (&Qtimer_event_handler
);
10806 Qdisabled_command_function
= intern ("disabled-command-function");
10807 staticpro (&Qdisabled_command_function
);
10809 Qself_insert_command
= intern ("self-insert-command");
10810 staticpro (&Qself_insert_command
);
10812 Qforward_char
= intern ("forward-char");
10813 staticpro (&Qforward_char
);
10815 Qbackward_char
= intern ("backward-char");
10816 staticpro (&Qbackward_char
);
10818 Qdisabled
= intern ("disabled");
10819 staticpro (&Qdisabled
);
10821 Qundefined
= intern ("undefined");
10822 staticpro (&Qundefined
);
10824 Qpre_command_hook
= intern ("pre-command-hook");
10825 staticpro (&Qpre_command_hook
);
10827 Qpost_command_hook
= intern ("post-command-hook");
10828 staticpro (&Qpost_command_hook
);
10830 Qdeferred_action_function
= intern ("deferred-action-function");
10831 staticpro (&Qdeferred_action_function
);
10833 Qcommand_hook_internal
= intern ("command-hook-internal");
10834 staticpro (&Qcommand_hook_internal
);
10836 Qfunction_key
= intern ("function-key");
10837 staticpro (&Qfunction_key
);
10838 Qmouse_click
= intern ("mouse-click");
10839 staticpro (&Qmouse_click
);
10840 #if defined (WINDOWSNT) || defined (MAC_OS)
10841 Qlanguage_change
= intern ("language-change");
10842 staticpro (&Qlanguage_change
);
10844 Qdrag_n_drop
= intern ("drag-n-drop");
10845 staticpro (&Qdrag_n_drop
);
10847 Qsave_session
= intern ("save-session");
10848 staticpro (&Qsave_session
);
10850 Qusr1_signal
= intern ("usr1-signal");
10851 staticpro (&Qusr1_signal
);
10852 Qusr2_signal
= intern ("usr2-signal");
10853 staticpro (&Qusr2_signal
);
10855 Qmenu_enable
= intern ("menu-enable");
10856 staticpro (&Qmenu_enable
);
10857 Qmenu_alias
= intern ("menu-alias");
10858 staticpro (&Qmenu_alias
);
10859 QCenable
= intern (":enable");
10860 staticpro (&QCenable
);
10861 QCvisible
= intern (":visible");
10862 staticpro (&QCvisible
);
10863 QChelp
= intern (":help");
10864 staticpro (&QChelp
);
10865 QCfilter
= intern (":filter");
10866 staticpro (&QCfilter
);
10867 QCbutton
= intern (":button");
10868 staticpro (&QCbutton
);
10869 QCkeys
= intern (":keys");
10870 staticpro (&QCkeys
);
10871 QCkey_sequence
= intern (":key-sequence");
10872 staticpro (&QCkey_sequence
);
10873 QCtoggle
= intern (":toggle");
10874 staticpro (&QCtoggle
);
10875 QCradio
= intern (":radio");
10876 staticpro (&QCradio
);
10878 Qmode_line
= intern ("mode-line");
10879 staticpro (&Qmode_line
);
10880 Qvertical_line
= intern ("vertical-line");
10881 staticpro (&Qvertical_line
);
10882 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
10883 staticpro (&Qvertical_scroll_bar
);
10884 Qmenu_bar
= intern ("menu-bar");
10885 staticpro (&Qmenu_bar
);
10888 Qmouse_fixup_help_message
= intern ("mouse-fixup-help-message");
10889 staticpro (&Qmouse_fixup_help_message
);
10892 Qabove_handle
= intern ("above-handle");
10893 staticpro (&Qabove_handle
);
10894 Qhandle
= intern ("handle");
10895 staticpro (&Qhandle
);
10896 Qbelow_handle
= intern ("below-handle");
10897 staticpro (&Qbelow_handle
);
10898 Qup
= intern ("up");
10900 Qdown
= intern ("down");
10901 staticpro (&Qdown
);
10902 Qtop
= intern ("top");
10904 Qbottom
= intern ("bottom");
10905 staticpro (&Qbottom
);
10906 Qend_scroll
= intern ("end-scroll");
10907 staticpro (&Qend_scroll
);
10908 Qratio
= intern ("ratio");
10909 staticpro (&Qratio
);
10911 Qevent_kind
= intern ("event-kind");
10912 staticpro (&Qevent_kind
);
10913 Qevent_symbol_elements
= intern ("event-symbol-elements");
10914 staticpro (&Qevent_symbol_elements
);
10915 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
10916 staticpro (&Qevent_symbol_element_mask
);
10917 Qmodifier_cache
= intern ("modifier-cache");
10918 staticpro (&Qmodifier_cache
);
10920 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
10921 staticpro (&Qrecompute_lucid_menubar
);
10922 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
10923 staticpro (&Qactivate_menubar_hook
);
10925 Qpolling_period
= intern ("polling-period");
10926 staticpro (&Qpolling_period
);
10928 Qinput_method_function
= intern ("input-method-function");
10929 staticpro (&Qinput_method_function
);
10931 Qinput_method_exit_on_first_char
= intern ("input-method-exit-on-first-char");
10932 staticpro (&Qinput_method_exit_on_first_char
);
10933 Qinput_method_use_echo_area
= intern ("input-method-use-echo-area");
10934 staticpro (&Qinput_method_use_echo_area
);
10936 Fset (Qinput_method_exit_on_first_char
, Qnil
);
10937 Fset (Qinput_method_use_echo_area
, Qnil
);
10939 last_point_position_buffer
= Qnil
;
10942 struct event_head
*p
;
10944 for (p
= head_table
;
10945 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
10948 *p
->var
= intern (p
->name
);
10949 staticpro (p
->var
);
10950 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
10951 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
10955 button_down_location
= Fmake_vector (make_number (1), Qnil
);
10956 staticpro (&button_down_location
);
10957 mouse_syms
= Fmake_vector (make_number (1), Qnil
);
10958 staticpro (&mouse_syms
);
10959 wheel_syms
= Fmake_vector (make_number (2), Qnil
);
10960 staticpro (&wheel_syms
);
10964 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
10966 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
10967 for (i
= 0; i
< len
; i
++)
10968 if (modifier_names
[i
])
10969 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
10970 staticpro (&modifier_symbols
);
10973 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
10974 staticpro (&recent_keys
);
10976 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
10977 staticpro (&this_command_keys
);
10979 raw_keybuf
= Fmake_vector (make_number (30), Qnil
);
10980 staticpro (&raw_keybuf
);
10982 Qextended_command_history
= intern ("extended-command-history");
10983 Fset (Qextended_command_history
, Qnil
);
10984 staticpro (&Qextended_command_history
);
10986 accent_key_syms
= Qnil
;
10987 staticpro (&accent_key_syms
);
10989 func_key_syms
= Qnil
;
10990 staticpro (&func_key_syms
);
10992 drag_n_drop_syms
= Qnil
;
10993 staticpro (&drag_n_drop_syms
);
10995 unread_switch_frame
= Qnil
;
10996 staticpro (&unread_switch_frame
);
10998 internal_last_event_frame
= Qnil
;
10999 staticpro (&internal_last_event_frame
);
11001 read_key_sequence_cmd
= Qnil
;
11002 staticpro (&read_key_sequence_cmd
);
11004 menu_bar_one_keymap_changed_items
= Qnil
;
11005 staticpro (&menu_bar_one_keymap_changed_items
);
11007 menu_bar_items_vector
= Qnil
;
11008 staticpro (&menu_bar_items_vector
);
11010 defsubr (&Sevent_convert_list
);
11011 defsubr (&Sread_key_sequence
);
11012 defsubr (&Sread_key_sequence_vector
);
11013 defsubr (&Srecursive_edit
);
11015 defsubr (&Strack_mouse
);
11017 defsubr (&Sinput_pending_p
);
11018 defsubr (&Scommand_execute
);
11019 defsubr (&Srecent_keys
);
11020 defsubr (&Sthis_command_keys
);
11021 defsubr (&Sthis_command_keys_vector
);
11022 defsubr (&Sthis_single_command_keys
);
11023 defsubr (&Sthis_single_command_raw_keys
);
11024 defsubr (&Sreset_this_command_lengths
);
11025 defsubr (&Sclear_this_command_keys
);
11026 defsubr (&Ssuspend_emacs
);
11027 defsubr (&Sabort_recursive_edit
);
11028 defsubr (&Sexit_recursive_edit
);
11029 defsubr (&Srecursion_depth
);
11030 defsubr (&Stop_level
);
11031 defsubr (&Sdiscard_input
);
11032 defsubr (&Sopen_dribble_file
);
11033 defsubr (&Sset_input_mode
);
11034 defsubr (&Scurrent_input_mode
);
11035 defsubr (&Sexecute_extended_command
);
11036 defsubr (&Sposn_at_point
);
11037 defsubr (&Sposn_at_x_y
);
11039 DEFVAR_LISP ("last-command-char", &last_command_char
,
11040 doc
: /* Last input event that was part of a command. */);
11042 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
11043 doc
: /* Last input event that was part of a command. */);
11045 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
11046 doc
: /* Last input event in a command, except for mouse menu events.
11047 Mouse menus give back keys that don't look like mouse events;
11048 this variable holds the actual mouse event that led to the menu,
11049 so that you can determine whether the command was run by mouse or not. */);
11051 DEFVAR_LISP ("last-input-char", &last_input_char
,
11052 doc
: /* Last input event. */);
11054 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
11055 doc
: /* Last input event. */);
11057 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
11058 doc
: /* List of events to be read as the command input.
11059 These events are processed first, before actual keyboard input. */);
11060 Vunread_command_events
= Qnil
;
11062 DEFVAR_INT ("unread-command-char", &unread_command_char
,
11063 doc
: /* If not -1, an object to be read as next command input event. */);
11065 DEFVAR_LISP ("unread-post-input-method-events", &Vunread_post_input_method_events
,
11066 doc
: /* List of events to be processed as input by input methods.
11067 These events are processed after `unread-command-events', but
11068 before actual keyboard input. */);
11069 Vunread_post_input_method_events
= Qnil
;
11071 DEFVAR_LISP ("unread-input-method-events", &Vunread_input_method_events
,
11072 doc
: /* List of events to be processed as input by input methods.
11073 These events are processed after `unread-command-events', but
11074 before actual keyboard input. */);
11075 Vunread_input_method_events
= Qnil
;
11077 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
11078 doc
: /* Meta-prefix character code.
11079 Meta-foo as command input turns into this character followed by foo. */);
11080 XSETINT (meta_prefix_char
, 033);
11082 DEFVAR_KBOARD ("last-command", Vlast_command
,
11083 doc
: /* The last command executed.
11084 Normally a symbol with a function definition, but can be whatever was found
11085 in the keymap, or whatever the variable `this-command' was set to by that
11088 The value `mode-exit' is special; it means that the previous command
11089 read an event that told it to exit, and it did so and unread that event.
11090 In other words, the present command is the event that made the previous
11093 The value `kill-region' is special; it means that the previous command
11094 was a kill command. */);
11096 DEFVAR_KBOARD ("real-last-command", Vreal_last_command
,
11097 doc
: /* Same as `last-command', but never altered by Lisp code. */);
11099 DEFVAR_LISP ("this-command", &Vthis_command
,
11100 doc
: /* The command now being executed.
11101 The command can set this variable; whatever is put here
11102 will be in `last-command' during the following command. */);
11103 Vthis_command
= Qnil
;
11105 DEFVAR_LISP ("this-original-command", &Vthis_original_command
,
11106 doc
: /* The command bound to the current key sequence before remapping.
11107 It equals `this-command' if the original command was not remapped through
11108 any of the active keymaps. Otherwise, the value of `this-command' is the
11109 result of looking up the original command in the active keymaps. */);
11110 Vthis_original_command
= Qnil
;
11112 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
11113 doc
: /* *Number of input events between auto-saves.
11114 Zero means disable autosaving due to number of characters typed. */);
11115 auto_save_interval
= 300;
11117 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
11118 doc
: /* *Number of seconds idle time before auto-save.
11119 Zero or nil means disable auto-saving due to idleness.
11120 After auto-saving due to this many seconds of idle time,
11121 Emacs also does a garbage collection if that seems to be warranted. */);
11122 XSETFASTINT (Vauto_save_timeout
, 30);
11124 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes
,
11125 doc
: /* *Nonzero means echo unfinished commands after this many seconds of pause.
11126 The value may be integer or floating point. */);
11127 Vecho_keystrokes
= make_number (1);
11129 DEFVAR_INT ("polling-period", &polling_period
,
11130 doc
: /* *Interval between polling for input during Lisp execution.
11131 The reason for polling is to make C-g work to stop a running program.
11132 Polling is needed only when using X windows and SIGIO does not work.
11133 Polling is automatically disabled in all other cases. */);
11134 polling_period
= 2;
11136 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
11137 doc
: /* *Maximum time between mouse clicks to make a double-click.
11138 Measured in milliseconds. nil means disable double-click recognition;
11139 t means double-clicks have no time limit and are detected
11140 by position only. */);
11141 Vdouble_click_time
= make_number (500);
11143 DEFVAR_INT ("double-click-fuzz", &double_click_fuzz
,
11144 doc
: /* *Maximum mouse movement between clicks to make a double-click.
11145 On window-system frames, value is the number of pixels the mouse may have
11146 moved horizontally or vertically between two clicks to make a double-click.
11147 On non window-system frames, value is interpreted in units of 1/8 characters
11150 This variable is also the threshold for motion of the mouse
11151 to count as a drag. */);
11152 double_click_fuzz
= 3;
11154 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
11155 doc
: /* *Non-nil means inhibit local map menu bar menus. */);
11156 inhibit_local_menu_bar_menus
= 0;
11158 DEFVAR_INT ("num-input-keys", &num_input_keys
,
11159 doc
: /* Number of complete key sequences read as input so far.
11160 This includes key sequences read from keyboard macros.
11161 The number is effectively the number of interactive command invocations. */);
11162 num_input_keys
= 0;
11164 DEFVAR_INT ("num-nonmacro-input-events", &num_nonmacro_input_events
,
11165 doc
: /* Number of input events read from the keyboard so far.
11166 This does not include events generated by keyboard macros. */);
11167 num_nonmacro_input_events
= 0;
11169 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
11170 doc
: /* The frame in which the most recently read event occurred.
11171 If the last event came from a keyboard macro, this is set to `macro'. */);
11172 Vlast_event_frame
= Qnil
;
11174 /* This variable is set up in sysdep.c. */
11175 DEFVAR_LISP ("tty-erase-char", &Vtty_erase_char
,
11176 doc
: /* The ERASE character as set by the user with stty. */);
11178 DEFVAR_LISP ("help-char", &Vhelp_char
,
11179 doc
: /* Character to recognize as meaning Help.
11180 When it is read, do `(eval help-form)', and display result if it's a string.
11181 If the value of `help-form' is nil, this char can be read normally. */);
11182 XSETINT (Vhelp_char
, Ctl ('H'));
11184 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
11185 doc
: /* List of input events to recognize as meaning Help.
11186 These work just like the value of `help-char' (see that). */);
11187 Vhelp_event_list
= Qnil
;
11189 DEFVAR_LISP ("help-form", &Vhelp_form
,
11190 doc
: /* Form to execute when character `help-char' is read.
11191 If the form returns a string, that string is displayed.
11192 If `help-form' is nil, the help char is not recognized. */);
11195 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
11196 doc
: /* Command to run when `help-char' character follows a prefix key.
11197 This command is used only when there is no actual binding
11198 for that character after that prefix key. */);
11199 Vprefix_help_command
= Qnil
;
11201 DEFVAR_LISP ("top-level", &Vtop_level
,
11202 doc
: /* Form to evaluate when Emacs starts up.
11203 Useful to set before you dump a modified Emacs. */);
11206 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
11207 doc
: /* Translate table for keyboard input, or nil.
11208 If non-nil, the value should be a char-table. Each character read
11209 from the keyboard is looked up in this char-table. If the value found
11210 there is non-nil, then it is used instead of the actual input character.
11212 The value can also be a string or vector, but this is considered obsolete.
11213 If it is a string or vector of length N, character codes N and up are left
11214 untranslated. In a vector, an element which is nil means "no translation".
11216 This is applied to the characters supplied to input methods, not their
11217 output. See also `translation-table-for-input'. */);
11218 Vkeyboard_translate_table
= Qnil
;
11220 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
11221 doc
: /* Non-nil means to always spawn a subshell instead of suspending.
11222 \(Even if the operating system has support for stopping a process.\) */);
11223 cannot_suspend
= 0;
11225 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
11226 doc
: /* Non-nil means prompt with menus when appropriate.
11227 This is done when reading from a keymap that has a prompt string,
11228 for elements that have prompt strings.
11229 The menu is displayed on the screen
11230 if X menus were enabled at configuration
11231 time and the previous event was a mouse click prefix key.
11232 Otherwise, menu prompting uses the echo area. */);
11233 menu_prompting
= 1;
11235 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
11236 doc
: /* Character to see next line of menu prompt.
11237 Type this character while in a menu prompt to rotate around the lines of it. */);
11238 XSETINT (menu_prompt_more_char
, ' ');
11240 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
11241 doc
: /* A mask of additional modifier keys to use with every keyboard character.
11242 Emacs applies the modifiers of the character stored here to each keyboard
11243 character it reads. For example, after evaluating the expression
11244 (setq extra-keyboard-modifiers ?\\C-x)
11245 all input characters will have the control modifier applied to them.
11247 Note that the character ?\\C-@, equivalent to the integer zero, does
11248 not count as a control character; rather, it counts as a character
11249 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero
11250 cancels any modification. */);
11251 extra_keyboard_modifiers
= 0;
11253 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
11254 doc
: /* If an editing command sets this to t, deactivate the mark afterward.
11255 The command loop sets this to nil before each command,
11256 and tests the value when the command returns.
11257 Buffer modification stores t in this variable. */);
11258 Vdeactivate_mark
= Qnil
;
11260 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
11261 doc
: /* Temporary storage of pre-command-hook or post-command-hook. */);
11262 Vcommand_hook_internal
= Qnil
;
11264 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
11265 doc
: /* Normal hook run before each command is executed.
11266 If an unhandled error happens in running this hook,
11267 the hook value is set to nil, since otherwise the error
11268 might happen repeatedly and make Emacs nonfunctional. */);
11269 Vpre_command_hook
= Qnil
;
11271 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
11272 doc
: /* Normal hook run after each command is executed.
11273 If an unhandled error happens in running this hook,
11274 the hook value is set to nil, since otherwise the error
11275 might happen repeatedly and make Emacs nonfunctional. */);
11276 Vpost_command_hook
= Qnil
;
11279 DEFVAR_LISP ("echo-area-clear-hook", ...,
11280 doc
: /* Normal hook run when clearing the echo area. */);
11282 Qecho_area_clear_hook
= intern ("echo-area-clear-hook");
11283 staticpro (&Qecho_area_clear_hook
);
11284 SET_SYMBOL_VALUE (Qecho_area_clear_hook
, Qnil
);
11286 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
11287 doc
: /* Non-nil means menu bar, specified Lucid style, needs to be recomputed. */);
11288 Vlucid_menu_bar_dirty_flag
= Qnil
;
11290 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
11291 doc
: /* List of menu bar items to move to the end of the menu bar.
11292 The elements of the list are event types that may have menu bar bindings. */);
11293 Vmenu_bar_final_items
= Qnil
;
11295 DEFVAR_KBOARD ("overriding-terminal-local-map",
11296 Voverriding_terminal_local_map
,
11297 doc
: /* Per-terminal keymap that overrides all other local keymaps.
11298 If this variable is non-nil, it is used as a keymap instead of the
11299 buffer's local map, and the minor mode keymaps and text property keymaps.
11300 It also replaces `overriding-local-map'.
11302 This variable is intended to let commands such as `universal-argument'
11303 set up a different keymap for reading the next command. */);
11305 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
11306 doc
: /* Keymap that overrides all other local keymaps.
11307 If this variable is non-nil, it is used as a keymap--replacing the
11308 buffer's local map, the minor mode keymaps, and char property keymaps. */);
11309 Voverriding_local_map
= Qnil
;
11311 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
11312 doc
: /* Non-nil means `overriding-local-map' applies to the menu bar.
11313 Otherwise, the menu bar continues to reflect the buffer's local map
11314 and the minor mode maps regardless of `overriding-local-map'. */);
11315 Voverriding_local_map_menu_flag
= Qnil
;
11317 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
11318 doc
: /* Keymap defining bindings for special events to execute at low level. */);
11319 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
11321 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
11322 doc
: /* *Non-nil means generate motion events for mouse motion. */);
11324 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
11325 doc
: /* Alist of system-specific X windows key symbols.
11326 Each element should have the form (N . SYMBOL) where N is the
11327 numeric keysym code (sans the \"system-specific\" bit 1<<28)
11328 and SYMBOL is its name. */);
11330 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
11331 doc
: /* List of deferred actions to be performed at a later time.
11332 The precise format isn't relevant here; we just check whether it is nil. */);
11333 Vdeferred_action_list
= Qnil
;
11335 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
11336 doc
: /* Function to call to handle deferred actions, after each command.
11337 This function is called with no arguments after each command
11338 whenever `deferred-action-list' is non-nil. */);
11339 Vdeferred_action_function
= Qnil
;
11341 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
11342 doc
: /* *Non-nil means show the equivalent key-binding when M-x command has one.
11343 The value can be a length of time to show the message for.
11344 If the value is non-nil and not a number, we wait 2 seconds. */);
11345 Vsuggest_key_bindings
= Qt
;
11347 DEFVAR_LISP ("timer-list", &Vtimer_list
,
11348 doc
: /* List of active absolute time timers in order of increasing time. */);
11349 Vtimer_list
= Qnil
;
11351 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
11352 doc
: /* List of active idle-time timers in order of increasing time. */);
11353 Vtimer_idle_list
= Qnil
;
11355 DEFVAR_LISP ("input-method-function", &Vinput_method_function
,
11356 doc
: /* If non-nil, the function that implements the current input method.
11357 It's called with one argument, a printing character that was just read.
11358 \(That means a character with code 040...0176.)
11359 Typically this function uses `read-event' to read additional events.
11360 When it does so, it should first bind `input-method-function' to nil
11361 so it will not be called recursively.
11363 The function should return a list of zero or more events
11364 to be used as input. If it wants to put back some events
11365 to be reconsidered, separately, by the input method,
11366 it can add them to the beginning of `unread-command-events'.
11368 The input method function can find in `input-method-previous-method'
11369 the previous echo area message.
11371 The input method function should refer to the variables
11372 `input-method-use-echo-area' and `input-method-exit-on-first-char'
11373 for guidance on what to do. */);
11374 Vinput_method_function
= Qnil
;
11376 DEFVAR_LISP ("input-method-previous-message",
11377 &Vinput_method_previous_message
,
11378 doc
: /* When `input-method-function' is called, hold the previous echo area message.
11379 This variable exists because `read-event' clears the echo area
11380 before running the input method. It is nil if there was no message. */);
11381 Vinput_method_previous_message
= Qnil
;
11383 DEFVAR_LISP ("show-help-function", &Vshow_help_function
,
11384 doc
: /* If non-nil, the function that implements the display of help.
11385 It's called with one argument, the help string to display. */);
11386 Vshow_help_function
= Qnil
;
11388 DEFVAR_LISP ("disable-point-adjustment", &Vdisable_point_adjustment
,
11389 doc
: /* If non-nil, suppress point adjustment after executing a command.
11391 After a command is executed, if point is moved into a region that has
11392 special properties (e.g. composition, display), we adjust point to
11393 the boundary of the region. But, when a command sets this variable to
11394 non-nil, we suppress the point adjustment.
11396 This variable is set to nil before reading a command, and is checked
11397 just after executing the command. */);
11398 Vdisable_point_adjustment
= Qnil
;
11400 DEFVAR_LISP ("global-disable-point-adjustment",
11401 &Vglobal_disable_point_adjustment
,
11402 doc
: /* *If non-nil, always suppress point adjustment.
11404 The default value is nil, in which case, point adjustment are
11405 suppressed only after special commands that set
11406 `disable-point-adjustment' (which see) to non-nil. */);
11407 Vglobal_disable_point_adjustment
= Qnil
;
11409 DEFVAR_BOOL ("update-menu-bindings", &update_menu_bindings
,
11410 doc
: /* Non-nil means updating menu bindings is allowed.
11411 A value of nil means menu bindings should not be updated.
11412 Used during Emacs' startup. */);
11413 update_menu_bindings
= 1;
11415 DEFVAR_LISP ("minibuffer-message-timeout", &Vminibuffer_message_timeout
,
11416 doc
: /* *How long to display an echo-area message when the minibuffer is active.
11417 If the value is not a number, such messages don't time out. */);
11418 Vminibuffer_message_timeout
= make_number (2);
11420 DEFVAR_LISP ("throw-on-input", &Vthrow_on_input
,
11421 doc
: /* If non-nil, any keyboard input throws to this symbol.
11422 The value of that variable is passed to `quit-flag' and later causes a
11423 peculiar kind of quitting. */);
11424 Vthrow_on_input
= Qnil
;
11428 keys_of_keyboard ()
11430 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
11431 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
11432 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
11433 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
11434 initial_define_key (meta_map
, 'x', "execute-extended-command");
11436 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
11437 "handle-delete-frame");
11438 /* Here we used to use `ignore-event' which would simple set prefix-arg to
11439 current-prefix-arg, as is done in `handle-switch-frame'.
11440 But `handle-switch-frame is not run from the special-map.
11441 Commands from that map are run in a special way that automatically
11442 preserves the prefix-arg. Restoring the prefix arg here is not just
11443 redundant but harmful:
11445 - current-prefix-arg is set to non-nil, prefix-arg is set to nil.
11446 - after the first prompt, the exit-minibuffer-hook is run which may
11447 iconify a frame and thus push a `iconify-frame' event.
11448 - after running exit-minibuffer-hook, current-prefix-arg is
11449 restored to the non-nil value it had before the prompt.
11450 - we enter the second prompt.
11451 current-prefix-arg is non-nil, prefix-arg is nil.
11452 - before running the first real event, we run the special iconify-frame
11453 event, but we pass the `special' arg to execute-command so
11454 current-prefix-arg and prefix-arg are left untouched.
11455 - here we foolishly copy the non-nil current-prefix-arg to prefix-arg.
11456 - the next key event will have a spuriously non-nil current-prefix-arg. */
11457 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
11459 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",
11461 /* Handling it at such a low-level causes read_key_sequence to get
11462 * confused because it doesn't realize that the current_buffer was
11463 * changed by read_char.
11465 * initial_define_lispy_key (Vspecial_event_map, "select-window",
11466 * "handle-select-window"); */
11467 initial_define_lispy_key (Vspecial_event_map
, "save-session",
11468 "handle-save-session");
11471 /* Mark the pointers in the kboard objects.
11472 Called by the Fgarbage_collector. */
11478 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
11480 if (kb
->kbd_macro_buffer
)
11481 for (p
= kb
->kbd_macro_buffer
; p
< kb
->kbd_macro_ptr
; p
++)
11483 mark_object (kb
->Voverriding_terminal_local_map
);
11484 mark_object (kb
->Vlast_command
);
11485 mark_object (kb
->Vreal_last_command
);
11486 mark_object (kb
->Vprefix_arg
);
11487 mark_object (kb
->Vlast_prefix_arg
);
11488 mark_object (kb
->kbd_queue
);
11489 mark_object (kb
->defining_kbd_macro
);
11490 mark_object (kb
->Vlast_kbd_macro
);
11491 mark_object (kb
->Vsystem_key_alist
);
11492 mark_object (kb
->system_key_syms
);
11493 mark_object (kb
->Vdefault_minibuffer_frame
);
11494 mark_object (kb
->echo_string
);
11497 struct input_event
*event
;
11498 for (event
= kbd_fetch_ptr
; event
!= kbd_store_ptr
; event
++)
11500 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
11501 event
= kbd_buffer
;
11502 if (event
->kind
!= SELECTION_REQUEST_EVENT
11503 && event
->kind
!= SELECTION_CLEAR_EVENT
)
11505 mark_object (event
->x
);
11506 mark_object (event
->y
);
11508 mark_object (event
->frame_or_window
);
11509 mark_object (event
->arg
);
11514 /* arch-tag: 774e34d7-6d31-42f3-8397-e079a4e4c9ca
11515 (do not change this comment) */