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., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
29 #include "termhooks.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"
62 #include <sys/types.h>
71 /* This is to get the definitions of the XK_ symbols. */
78 #endif /* HAVE_NTGUI */
88 /* Variables for blockinput.h: */
90 /* Non-zero if interrupt input is blocked right now. */
91 int interrupt_input_blocked
;
93 /* Nonzero means an input interrupt has arrived
94 during the current critical section. */
95 int interrupt_input_pending
;
98 #ifdef HAVE_WINDOW_SYSTEM
99 /* Make all keyboard buffers much bigger when using X windows. */
101 /* But not too big (local data > 32K error) if on Mac OS Classic. */
102 #define KBD_BUFFER_SIZE 512
104 #define KBD_BUFFER_SIZE 4096
106 #else /* No X-windows, character input */
107 #define KBD_BUFFER_SIZE 4096
108 #endif /* No X-windows */
110 #define abs(x) ((x) >= 0 ? (x) : -(x))
112 /* Following definition copied from eval.c */
116 struct backtrace
*next
;
117 Lisp_Object
*function
;
118 Lisp_Object
*args
; /* Points to vector of args. */
119 int nargs
; /* length of vector. If nargs is UNEVALLED,
120 args points to slot holding list of
123 /* Nonzero means call value of debugger when done with this operation. */
128 KBOARD
*initial_kboard
;
129 KBOARD
*current_kboard
;
133 KBOARD the_only_kboard
;
136 /* Non-nil disable property on a command means
137 do not execute it; call disabled-command-function's value instead. */
138 Lisp_Object Qdisabled
, Qdisabled_command_function
;
140 #define NUM_RECENT_KEYS (100)
141 int recent_keys_index
; /* Index for storing next element into recent_keys */
142 int total_keys
; /* Total number of elements stored into recent_keys */
143 Lisp_Object recent_keys
; /* A vector, holding the last 100 keystrokes */
145 /* Vector holding the key sequence that invoked the current command.
146 It is reused for each command, and it may be longer than the current
147 sequence; this_command_key_count indicates how many elements
148 actually mean something.
149 It's easier to staticpro a single Lisp_Object than an array. */
150 Lisp_Object this_command_keys
;
151 int this_command_key_count
;
153 /* 1 after calling Freset_this_command_lengths.
155 int this_command_key_count_reset
;
157 /* This vector is used as a buffer to record the events that were actually read
158 by read_key_sequence. */
159 Lisp_Object raw_keybuf
;
160 int raw_keybuf_count
;
162 #define GROW_RAW_KEYBUF \
163 if (raw_keybuf_count == XVECTOR (raw_keybuf)->size) \
165 int newsize = 2 * XVECTOR (raw_keybuf)->size; \
167 new = Fmake_vector (make_number (newsize), Qnil); \
168 bcopy (XVECTOR (raw_keybuf)->contents, XVECTOR (new)->contents, \
169 raw_keybuf_count * sizeof (Lisp_Object)); \
173 /* Number of elements of this_command_keys
174 that precede this key sequence. */
175 int this_single_command_key_start
;
177 /* Record values of this_command_key_count and echo_length ()
178 before this command was read. */
179 static int before_command_key_count
;
180 static int before_command_echo_length
;
182 extern int minbuf_level
;
184 extern int message_enable_multibyte
;
186 extern struct backtrace
*backtrace_list
;
188 /* If non-nil, the function that implements the display of help.
189 It's called with one argument, the help string to display. */
191 Lisp_Object Vshow_help_function
;
193 /* If a string, the message displayed before displaying a help-echo
196 Lisp_Object Vpre_help_message
;
198 /* Nonzero means do menu prompting. */
200 static int menu_prompting
;
202 /* Character to see next line of menu prompt. */
204 static Lisp_Object menu_prompt_more_char
;
206 /* For longjmp to where kbd input is being done. */
208 static jmp_buf getcjmp
;
210 /* True while doing kbd input. */
211 int waiting_for_input
;
213 /* True while displaying for echoing. Delays C-g throwing. */
217 /* Non-null means we can start echoing at the next input pause even
218 though there is something in the echo area. */
220 static struct kboard
*ok_to_echo_at_next_pause
;
222 /* The kboard last echoing, or null for none. Reset to 0 in
223 cancel_echoing. If non-null, and a current echo area message
224 exists, and echo_message_buffer is eq to the current message
225 buffer, we know that the message comes from echo_kboard. */
227 struct kboard
*echo_kboard
;
229 /* The buffer used for echoing. Set in echo_now, reset in
232 Lisp_Object echo_message_buffer
;
234 /* Nonzero means disregard local maps for the menu bar. */
235 static int inhibit_local_menu_bar_menus
;
237 /* Nonzero means C-g should cause immediate error-signal. */
240 /* The user's ERASE setting. */
241 Lisp_Object Vtty_erase_char
;
243 /* Character to recognize as the help char. */
244 Lisp_Object Vhelp_char
;
246 /* List of other event types to recognize as meaning "help". */
247 Lisp_Object Vhelp_event_list
;
249 /* Form to execute when help char is typed. */
250 Lisp_Object Vhelp_form
;
252 /* Command to run when the help character follows a prefix key. */
253 Lisp_Object Vprefix_help_command
;
255 /* List of items that should move to the end of the menu bar. */
256 Lisp_Object Vmenu_bar_final_items
;
258 /* Non-nil means show the equivalent key-binding for
259 any M-x command that has one.
260 The value can be a length of time to show the message for.
261 If the value is non-nil and not a number, we wait 2 seconds. */
262 Lisp_Object Vsuggest_key_bindings
;
264 /* How long to display an echo-area message when the minibuffer is active.
265 If the value is not a number, such messages don't time out. */
266 Lisp_Object Vminibuffer_message_timeout
;
268 /* Character that causes a quit. Normally C-g.
270 If we are running on an ordinary terminal, this must be an ordinary
271 ASCII char, since we want to make it our interrupt character.
273 If we are not running on an ordinary terminal, it still needs to be
274 an ordinary ASCII char. This character needs to be recognized in
275 the input interrupt handler. At this point, the keystroke is
276 represented as a struct input_event, while the desired quit
277 character is specified as a lispy event. The mapping from struct
278 input_events to lispy events cannot run in an interrupt handler,
279 and the reverse mapping is difficult for anything but ASCII
282 FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an
286 extern Lisp_Object current_global_map
;
287 extern int minibuf_level
;
289 /* If non-nil, this is a map that overrides all other local maps. */
290 Lisp_Object Voverriding_local_map
;
292 /* If non-nil, Voverriding_local_map applies to the menu bar. */
293 Lisp_Object Voverriding_local_map_menu_flag
;
295 /* Keymap that defines special misc events that should
296 be processed immediately at a low level. */
297 Lisp_Object Vspecial_event_map
;
299 /* Current depth in recursive edits. */
300 int command_loop_level
;
302 /* Total number of times command_loop has read a key sequence. */
303 EMACS_INT num_input_keys
;
305 /* Last input character read as a command. */
306 Lisp_Object last_command_char
;
308 /* Last input character read as a command, not counting menus
309 reached by the mouse. */
310 Lisp_Object last_nonmenu_event
;
312 /* Last input character read for any purpose. */
313 Lisp_Object last_input_char
;
315 /* If not Qnil, a list of objects to be read as subsequent command input. */
316 Lisp_Object Vunread_command_events
;
318 /* If not Qnil, a list of objects to be read as subsequent command input
319 including input method processing. */
320 Lisp_Object Vunread_input_method_events
;
322 /* If not Qnil, a list of objects to be read as subsequent command input
323 but NOT including input method processing. */
324 Lisp_Object Vunread_post_input_method_events
;
326 /* If not -1, an event to be read as subsequent command input. */
327 EMACS_INT unread_command_char
;
329 /* If not Qnil, this is a switch-frame event which we decided to put
330 off until the end of a key sequence. This should be read as the
331 next command input, after any unread_command_events.
333 read_key_sequence uses this to delay switch-frame events until the
334 end of the key sequence; Fread_char uses it to put off switch-frame
335 events until a non-ASCII event is acceptable as input. */
336 Lisp_Object unread_switch_frame
;
338 /* A mask of extra modifier bits to put into every keyboard char. */
339 EMACS_INT extra_keyboard_modifiers
;
341 /* Char to use as prefix when a meta character is typed in.
342 This is bound on entry to minibuffer in case ESC is changed there. */
344 Lisp_Object meta_prefix_char
;
346 /* Last size recorded for a current buffer which is not a minibuffer. */
347 static int last_non_minibuf_size
;
349 /* Number of idle seconds before an auto-save and garbage collection. */
350 static Lisp_Object Vauto_save_timeout
;
352 /* Total number of times read_char has returned. */
353 int num_input_events
;
355 /* Total number of times read_char has returned, outside of macros. */
356 EMACS_INT num_nonmacro_input_events
;
358 /* Auto-save automatically when this many characters have been typed
359 since the last time. */
361 static EMACS_INT auto_save_interval
;
363 /* Value of num_nonmacro_input_events as of last auto save. */
367 /* The command being executed by the command loop.
368 Commands may set this, and the value set will be copied into
369 current_kboard->Vlast_command instead of the actual command. */
370 Lisp_Object Vthis_command
;
372 /* This is like Vthis_command, except that commands never set it. */
373 Lisp_Object real_this_command
;
375 /* If the lookup of the command returns a binding, the original
376 command is stored in this-original-command. It is nil otherwise. */
377 Lisp_Object Vthis_original_command
;
379 /* The value of point when the last command was executed. */
380 int last_point_position
;
382 /* The buffer that was current when the last command was started. */
383 Lisp_Object last_point_position_buffer
;
385 /* The frame in which the last input event occurred, or Qmacro if the
386 last event came from a macro. We use this to determine when to
387 generate switch-frame events. This may be cleared by functions
388 like Fselect_frame, to make sure that a switch-frame event is
389 generated by the next character. */
390 Lisp_Object internal_last_event_frame
;
392 /* A user-visible version of the above, intended to allow users to
393 figure out where the last event came from, if the event doesn't
394 carry that information itself (i.e. if it was a character). */
395 Lisp_Object Vlast_event_frame
;
397 /* The timestamp of the last input event we received from the X server.
398 X Windows wants this for selection ownership. */
399 unsigned long last_event_timestamp
;
401 Lisp_Object Qself_insert_command
;
402 Lisp_Object Qforward_char
;
403 Lisp_Object Qbackward_char
;
404 Lisp_Object Qundefined
;
405 Lisp_Object Qtimer_event_handler
;
407 /* read_key_sequence stores here the command definition of the
408 key sequence that it reads. */
409 Lisp_Object read_key_sequence_cmd
;
411 /* Echo unfinished commands after this many seconds of pause. */
412 Lisp_Object Vecho_keystrokes
;
414 /* Form to evaluate (if non-nil) when Emacs is started. */
415 Lisp_Object Vtop_level
;
417 /* User-supplied table to translate input characters. */
418 Lisp_Object Vkeyboard_translate_table
;
420 /* Keymap mapping ASCII function key sequences onto their preferred forms. */
421 extern Lisp_Object Vfunction_key_map
;
423 /* Another keymap that maps key sequences into key sequences.
424 This one takes precedence over ordinary definitions. */
425 extern Lisp_Object Vkey_translation_map
;
427 /* If non-nil, this implements the current input method. */
428 Lisp_Object Vinput_method_function
;
429 Lisp_Object Qinput_method_function
;
431 /* When we call Vinput_method_function,
432 this holds the echo area message that was just erased. */
433 Lisp_Object Vinput_method_previous_message
;
435 /* Non-nil means deactivate the mark at end of this command. */
436 Lisp_Object Vdeactivate_mark
;
438 /* Menu bar specified in Lucid Emacs fashion. */
440 Lisp_Object Vlucid_menu_bar_dirty_flag
;
441 Lisp_Object Qrecompute_lucid_menubar
, Qactivate_menubar_hook
;
443 Lisp_Object Qecho_area_clear_hook
;
445 /* Hooks to run before and after each command. */
446 Lisp_Object Qpre_command_hook
, Vpre_command_hook
;
447 Lisp_Object Qpost_command_hook
, Vpost_command_hook
;
448 Lisp_Object Qcommand_hook_internal
, Vcommand_hook_internal
;
449 /* Hook run after a command if there's no more input soon. */
450 Lisp_Object Qpost_command_idle_hook
, Vpost_command_idle_hook
;
452 /* Delay time in microseconds before running post-command-idle-hook. */
453 EMACS_INT post_command_idle_delay
;
455 /* List of deferred actions to be performed at a later time.
456 The precise format isn't relevant here; we just check whether it is nil. */
457 Lisp_Object Vdeferred_action_list
;
459 /* Function to call to handle deferred actions, when there are any. */
460 Lisp_Object Vdeferred_action_function
;
461 Lisp_Object Qdeferred_action_function
;
463 Lisp_Object Qinput_method_exit_on_first_char
;
464 Lisp_Object Qinput_method_use_echo_area
;
466 /* File in which we write all commands we read. */
469 /* Nonzero if input is available. */
472 /* Non-zero means force key bindings update in parse_menu_item. */
474 int update_menu_bindings
;
476 extern char *pending_malloc_warning
;
478 /* Circular buffer for pre-read keyboard input. */
480 static struct input_event kbd_buffer
[KBD_BUFFER_SIZE
];
482 /* Pointer to next available character in kbd_buffer.
483 If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
484 This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the
485 next available char is in kbd_buffer[0]. */
486 static struct input_event
*kbd_fetch_ptr
;
488 /* Pointer to next place to store character in kbd_buffer. This
489 may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
490 character should go in kbd_buffer[0]. */
491 static struct input_event
* volatile kbd_store_ptr
;
493 /* The above pair of variables forms a "queue empty" flag. When we
494 enqueue a non-hook event, we increment kbd_store_ptr. When we
495 dequeue a non-hook event, we increment kbd_fetch_ptr. We say that
496 there is input available iff the two pointers are not equal.
498 Why not just have a flag set and cleared by the enqueuing and
499 dequeuing functions? Such a flag could be screwed up by interrupts
500 at inopportune times. */
502 /* If this flag is non-nil, we check mouse_moved to see when the
503 mouse moves, and motion events will appear in the input stream.
504 Otherwise, mouse motion is ignored. */
505 Lisp_Object do_mouse_tracking
;
507 /* Symbols to head events. */
508 Lisp_Object Qmouse_movement
;
509 Lisp_Object Qscroll_bar_movement
;
510 Lisp_Object Qswitch_frame
;
511 Lisp_Object Qdelete_frame
;
512 Lisp_Object Qiconify_frame
;
513 Lisp_Object Qmake_frame_visible
;
514 Lisp_Object Qselect_window
;
515 Lisp_Object Qhelp_echo
;
518 Lisp_Object Qmouse_fixup_help_message
;
521 /* Symbols to denote kinds of events. */
522 Lisp_Object Qfunction_key
;
523 Lisp_Object Qmouse_click
;
524 #if defined (WINDOWSNT) || defined (MAC_OS)
525 Lisp_Object Qlanguage_change
;
527 Lisp_Object Qdrag_n_drop
;
528 Lisp_Object Qsave_session
;
530 /* Lisp_Object Qmouse_movement; - also an event header */
532 /* Properties of event headers. */
533 Lisp_Object Qevent_kind
;
534 Lisp_Object Qevent_symbol_elements
;
536 /* menu item parts */
537 Lisp_Object Qmenu_alias
;
538 Lisp_Object Qmenu_enable
;
539 Lisp_Object QCenable
, QCvisible
, QChelp
, QCfilter
, QCkeys
, QCkey_sequence
;
540 Lisp_Object QCbutton
, QCtoggle
, QCradio
;
541 extern Lisp_Object Vdefine_key_rebound_commands
;
542 extern Lisp_Object Qmenu_item
;
544 /* An event header symbol HEAD may have a property named
545 Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
546 BASE is the base, unmodified version of HEAD, and MODIFIERS is the
547 mask of modifiers applied to it. If present, this is used to help
548 speed up parse_modifiers. */
549 Lisp_Object Qevent_symbol_element_mask
;
551 /* An unmodified event header BASE may have a property named
552 Qmodifier_cache, which is an alist mapping modifier masks onto
553 modified versions of BASE. If present, this helps speed up
555 Lisp_Object Qmodifier_cache
;
557 /* Symbols to use for parts of windows. */
558 Lisp_Object Qmode_line
;
559 Lisp_Object Qvertical_line
;
560 Lisp_Object Qvertical_scroll_bar
;
561 Lisp_Object Qmenu_bar
;
562 extern Lisp_Object Qleft_margin
, Qright_margin
;
563 extern Lisp_Object Qleft_fringe
, Qright_fringe
;
564 extern Lisp_Object QCmap
;
566 Lisp_Object
recursive_edit_unwind (), command_loop ();
567 Lisp_Object
Fthis_command_keys ();
568 Lisp_Object Qextended_command_history
;
569 EMACS_TIME
timer_check ();
571 extern Lisp_Object Vhistory_length
, Vtranslation_table_for_input
;
573 extern char *x_get_keysym_name ();
575 static void record_menu_key ();
576 static int echo_length ();
578 Lisp_Object Qpolling_period
;
580 /* List of absolute timers. Appears in order of next scheduled event. */
581 Lisp_Object Vtimer_list
;
583 /* List of idle time timers. Appears in order of next scheduled event. */
584 Lisp_Object Vtimer_idle_list
;
586 /* Incremented whenever a timer is run. */
589 extern Lisp_Object Vprint_level
, Vprint_length
;
591 /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt
593 EMACS_TIME
*input_available_clear_time
;
595 /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode.
596 Default is 1 if INTERRUPT_INPUT is defined. */
599 /* Nonzero while interrupts are temporarily deferred during redisplay. */
600 int interrupts_deferred
;
602 /* Allow m- file to inhibit use of FIONREAD. */
603 #ifdef BROKEN_FIONREAD
607 /* We are unable to use interrupts if FIONREAD is not available,
608 so flush SIGIO so we won't try. */
609 #if !defined (FIONREAD)
615 /* If we support a window system, turn on the code to poll periodically
616 to detect C-g. It isn't actually used when doing interrupt input. */
617 #if defined(HAVE_WINDOW_SYSTEM) && !defined(USE_ASYNC_EVENTS)
618 #define POLL_FOR_INPUT
621 /* After a command is executed, if point is moved into a region that
622 has specific properties (e.g. composition, display), we adjust
623 point to the boundary of the region. But, if a command sets this
624 variable to non-nil, we suppress this point adjustment. This
625 variable is set to nil before reading a command. */
627 Lisp_Object Vdisable_point_adjustment
;
629 /* If non-nil, always disable point adjustment. */
631 Lisp_Object Vglobal_disable_point_adjustment
;
633 /* The time when Emacs started being idle. */
635 static EMACS_TIME timer_idleness_start_time
;
637 /* After Emacs stops being idle, this saves the last value
638 of timer_idleness_start_time from when it was idle. */
640 static EMACS_TIME timer_last_idleness_start_time
;
643 /* Global variable declarations. */
645 /* Flags for readable_events. */
646 #define READABLE_EVENTS_DO_TIMERS_NOW (1 << 0)
647 #define READABLE_EVENTS_FILTER_EVENTS (1 << 1)
648 #define READABLE_EVENTS_IGNORE_SQUEEZABLES (1 << 2)
650 /* Function for init_keyboard to call with no args (if nonzero). */
651 void (*keyboard_init_hook
) ();
653 static int read_avail_input
P_ ((int));
654 static void get_input_pending
P_ ((int *, int));
655 static int readable_events
P_ ((int));
656 static Lisp_Object read_char_x_menu_prompt
P_ ((int, Lisp_Object
*,
657 Lisp_Object
, int *));
658 static Lisp_Object
read_char_x_menu_prompt ();
659 static Lisp_Object read_char_minibuf_menu_prompt
P_ ((int, int,
661 static Lisp_Object make_lispy_event
P_ ((struct input_event
*));
663 static Lisp_Object make_lispy_movement
P_ ((struct frame
*, Lisp_Object
,
664 enum scroll_bar_part
,
665 Lisp_Object
, Lisp_Object
,
668 static Lisp_Object modify_event_symbol
P_ ((int, unsigned, Lisp_Object
,
669 Lisp_Object
, char **,
670 Lisp_Object
*, unsigned));
671 static Lisp_Object make_lispy_switch_frame
P_ ((Lisp_Object
));
672 static int parse_solitary_modifier
P_ ((Lisp_Object
));
673 static int parse_solitary_modifier ();
674 static void save_getcjmp
P_ ((jmp_buf));
675 static void save_getcjmp ();
676 static void restore_getcjmp
P_ ((jmp_buf));
677 static Lisp_Object apply_modifiers
P_ ((int, Lisp_Object
));
678 static void clear_event
P_ ((struct input_event
*));
679 static void any_kboard_state
P_ ((void));
680 static SIGTYPE interrupt_signal
P_ ((int signalnum
));
681 static void handle_interrupt
P_ ((void));
682 static void timer_start_idle
P_ ((void));
683 static void timer_stop_idle
P_ ((void));
684 static void timer_resume_idle
P_ ((void));
686 /* Nonzero means don't try to suspend even if the operating system seems
688 static int cannot_suspend
;
690 extern Lisp_Object Qidentity
, Qonly
;
692 /* Install the string STR as the beginning of the string of echoing,
693 so that it serves as a prompt for the next character.
694 Also start echoing. */
700 current_kboard
->echo_string
= str
;
701 current_kboard
->echo_after_prompt
= SCHARS (str
);
705 /* Add C to the echo string, if echoing is going on.
706 C can be a character, which is printed prettily ("M-C-x" and all that
707 jazz), or a symbol, whose name is printed. */
713 if (current_kboard
->immediate_echo
)
715 int size
= KEY_DESCRIPTION_SIZE
+ 100;
716 char *buffer
= (char *) alloca (size
);
718 Lisp_Object echo_string
;
720 echo_string
= current_kboard
->echo_string
;
722 /* If someone has passed us a composite event, use its head symbol. */
727 ptr
= push_key_description (XINT (c
), ptr
, 1);
729 else if (SYMBOLP (c
))
731 Lisp_Object name
= SYMBOL_NAME (c
);
732 int nbytes
= SBYTES (name
);
734 if (size
- (ptr
- buffer
) < nbytes
)
736 int offset
= ptr
- buffer
;
737 size
= max (2 * size
, size
+ nbytes
);
738 buffer
= (char *) alloca (size
);
739 ptr
= buffer
+ offset
;
742 ptr
+= copy_text (SDATA (name
), ptr
, nbytes
,
743 STRING_MULTIBYTE (name
), 1);
746 if ((NILP (echo_string
) || SCHARS (echo_string
) == 0)
749 const char *text
= " (Type ? for further options)";
750 int len
= strlen (text
);
752 if (size
- (ptr
- buffer
) < len
)
754 int offset
= ptr
- buffer
;
756 buffer
= (char *) alloca (size
);
757 ptr
= buffer
+ offset
;
760 bcopy (text
, ptr
, len
);
764 /* Replace a dash from echo_dash with a space, otherwise
765 add a space at the end as a separator between keys. */
766 if (STRINGP (echo_string
)
767 && SCHARS (echo_string
) > 1)
769 Lisp_Object last_char
, prev_char
, idx
;
771 idx
= make_number (SCHARS (echo_string
) - 2);
772 prev_char
= Faref (echo_string
, idx
);
774 idx
= make_number (SCHARS (echo_string
) - 1);
775 last_char
= Faref (echo_string
, idx
);
777 /* We test PREV_CHAR to make sure this isn't the echoing
779 if (XINT (last_char
) == '-' && XINT (prev_char
) != ' ')
780 Faset (echo_string
, idx
, make_number (' '));
782 echo_string
= concat2 (echo_string
, build_string (" "));
785 current_kboard
->echo_string
786 = concat2 (echo_string
, make_string (buffer
, ptr
- buffer
));
792 /* Temporarily add a dash to the end of the echo string if it's not
793 empty, so that it serves as a mini-prompt for the very next character. */
798 /* Do nothing if not echoing at all. */
799 if (NILP (current_kboard
->echo_string
))
802 if (!current_kboard
->immediate_echo
803 && SCHARS (current_kboard
->echo_string
) == 0)
806 /* Do nothing if we just printed a prompt. */
807 if (current_kboard
->echo_after_prompt
808 == SCHARS (current_kboard
->echo_string
))
811 /* Do nothing if we have already put a dash at the end. */
812 if (SCHARS (current_kboard
->echo_string
) > 1)
814 Lisp_Object last_char
, prev_char
, idx
;
816 idx
= make_number (SCHARS (current_kboard
->echo_string
) - 2);
817 prev_char
= Faref (current_kboard
->echo_string
, idx
);
819 idx
= make_number (SCHARS (current_kboard
->echo_string
) - 1);
820 last_char
= Faref (current_kboard
->echo_string
, idx
);
822 if (XINT (last_char
) == '-' && XINT (prev_char
) != ' ')
826 /* Put a dash at the end of the buffer temporarily,
827 but make it go away when the next character is added. */
828 current_kboard
->echo_string
= concat2 (current_kboard
->echo_string
,
833 /* Display the current echo string, and begin echoing if not already
839 if (!current_kboard
->immediate_echo
)
842 current_kboard
->immediate_echo
= 1;
844 for (i
= 0; i
< this_command_key_count
; i
++)
848 /* Set before_command_echo_length to the value that would
849 have been saved before the start of this subcommand in
850 command_loop_1, if we had already been echoing then. */
851 if (i
== this_single_command_key_start
)
852 before_command_echo_length
= echo_length ();
854 c
= XVECTOR (this_command_keys
)->contents
[i
];
855 if (! (EVENT_HAS_PARAMETERS (c
)
856 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
860 /* Set before_command_echo_length to the value that would
861 have been saved before the start of this subcommand in
862 command_loop_1, if we had already been echoing then. */
863 if (this_command_key_count
== this_single_command_key_start
)
864 before_command_echo_length
= echo_length ();
866 /* Put a dash at the end to invite the user to type more. */
871 message3_nolog (current_kboard
->echo_string
,
872 SBYTES (current_kboard
->echo_string
),
873 STRING_MULTIBYTE (current_kboard
->echo_string
));
876 /* Record in what buffer we echoed, and from which kboard. */
877 echo_message_buffer
= echo_area_buffer
[0];
878 echo_kboard
= current_kboard
;
880 if (waiting_for_input
&& !NILP (Vquit_flag
))
881 quit_throw_to_read_char ();
884 /* Turn off echoing, for the start of a new command. */
889 current_kboard
->immediate_echo
= 0;
890 current_kboard
->echo_after_prompt
= -1;
891 current_kboard
->echo_string
= Qnil
;
892 ok_to_echo_at_next_pause
= NULL
;
894 echo_message_buffer
= Qnil
;
897 /* Return the length of the current echo string. */
902 return (STRINGP (current_kboard
->echo_string
)
903 ? SCHARS (current_kboard
->echo_string
)
907 /* Truncate the current echo message to its first LEN chars.
908 This and echo_char get used by read_key_sequence when the user
909 switches frames while entering a key sequence. */
912 echo_truncate (nchars
)
915 if (STRINGP (current_kboard
->echo_string
))
916 current_kboard
->echo_string
917 = Fsubstring (current_kboard
->echo_string
,
918 make_number (0), make_number (nchars
));
919 truncate_echo_area (nchars
);
923 /* Functions for manipulating this_command_keys. */
925 add_command_key (key
)
928 #if 0 /* Not needed after we made Freset_this_command_lengths
929 do the job immediately. */
930 /* If reset-this-command-length was called recently, obey it now.
931 See the doc string of that function for an explanation of why. */
932 if (before_command_restore_flag
)
934 this_command_key_count
= before_command_key_count_1
;
935 if (this_command_key_count
< this_single_command_key_start
)
936 this_single_command_key_start
= this_command_key_count
;
937 echo_truncate (before_command_echo_length_1
);
938 before_command_restore_flag
= 0;
942 if (this_command_key_count
>= ASIZE (this_command_keys
))
943 this_command_keys
= larger_vector (this_command_keys
,
944 2 * ASIZE (this_command_keys
),
947 AREF (this_command_keys
, this_command_key_count
) = key
;
948 ++this_command_key_count
;
955 int count
= SPECPDL_INDEX ();
958 if (command_loop_level
> 0)
960 specbind (Qstandard_output
, Qt
);
961 specbind (Qstandard_input
, Qt
);
964 #ifdef HAVE_X_WINDOWS
965 /* The command loop has started an hourglass timer, so we have to
966 cancel it here, otherwise it will fire because the recursive edit
967 can take some time. Do not check for display_hourglass_p here,
968 because it could already be nil. */
972 /* This function may have been called from a debugger called from
973 within redisplay, for instance by Edebugging a function called
974 from fontification-functions. We want to allow redisplay in
975 the debugging session.
977 The recursive edit is left with a `(throw exit ...)'. The `exit'
978 tag is not caught anywhere in redisplay, i.e. when we leave the
979 recursive edit, the original redisplay leading to the recursive
980 edit will be unwound. The outcome should therefore be safe. */
981 specbind (Qinhibit_redisplay
, Qnil
);
984 val
= command_loop ();
986 Fsignal (Qquit
, Qnil
);
987 /* Handle throw from read_minibuf when using minibuffer
988 while it's active but we're in another window. */
990 Fsignal (Qerror
, Fcons (val
, Qnil
));
992 return unbind_to (count
, Qnil
);
995 /* When an auto-save happens, record the "time", and don't do again soon. */
1000 last_auto_save
= num_nonmacro_input_events
;
1003 /* Make an auto save happen as soon as possible at command level. */
1006 force_auto_save_soon ()
1008 last_auto_save
= - auto_save_interval
- 1;
1010 record_asynch_buffer_change ();
1013 DEFUN ("recursive-edit", Frecursive_edit
, Srecursive_edit
, 0, 0, "",
1014 doc
: /* Invoke the editor command loop recursively.
1015 To get out of the recursive edit, a command can do `(throw 'exit nil)';
1016 that tells this function to return.
1017 Alternately, `(throw 'exit t)' makes this function signal an error.
1018 This function is called by the editor initialization to begin editing. */)
1021 int count
= SPECPDL_INDEX ();
1024 /* If we enter while input is blocked, don't lock up here.
1025 This may happen through the debugger during redisplay. */
1026 if (INPUT_BLOCKED_P
)
1029 command_loop_level
++;
1030 update_mode_lines
= 1;
1032 if (command_loop_level
1033 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
1034 buffer
= Fcurrent_buffer ();
1038 /* If we leave recursive_edit_1 below with a `throw' for instance,
1039 like it is done in the splash screen display, we have to
1040 make sure that we restore single_kboard as command_loop_1
1041 would have done if it were left normally. */
1042 record_unwind_protect (recursive_edit_unwind
,
1043 Fcons (buffer
, single_kboard
? Qt
: Qnil
));
1045 recursive_edit_1 ();
1046 return unbind_to (count
, Qnil
);
1050 recursive_edit_unwind (info
)
1053 if (BUFFERP (XCAR (info
)))
1054 Fset_buffer (XCAR (info
));
1056 if (NILP (XCDR (info
)))
1057 any_kboard_state ();
1059 single_kboard_state ();
1061 command_loop_level
--;
1062 update_mode_lines
= 1;
1071 #if 0 /* Theory: if there's anything in Vunread_command_events,
1072 it will right away be read by read_key_sequence,
1073 and then if we do switch KBOARDS, it will go into the side
1074 queue then. So we don't need to do anything special here -- rms. */
1075 if (CONSP (Vunread_command_events
))
1077 current_kboard
->kbd_queue
1078 = nconc2 (Vunread_command_events
, current_kboard
->kbd_queue
);
1079 current_kboard
->kbd_queue_has_data
= 1;
1081 Vunread_command_events
= Qnil
;
1087 /* Switch to the single-kboard state, making current_kboard
1088 the only KBOARD from which further input is accepted. */
1091 single_kboard_state ()
1098 /* If we're in single_kboard state for kboard KBOARD,
1102 not_single_kboard_state (kboard
)
1106 if (kboard
== current_kboard
)
1111 /* Maintain a stack of kboards, so other parts of Emacs
1112 can switch temporarily to the kboard of a given frame
1113 and then revert to the previous status. */
1118 struct kboard_stack
*next
;
1121 static struct kboard_stack
*kboard_stack
;
1124 push_frame_kboard (f
)
1128 struct kboard_stack
*p
1129 = (struct kboard_stack
*) xmalloc (sizeof (struct kboard_stack
));
1131 p
->next
= kboard_stack
;
1132 p
->kboard
= current_kboard
;
1135 current_kboard
= FRAME_KBOARD (f
);
1143 struct kboard_stack
*p
= kboard_stack
;
1144 current_kboard
= p
->kboard
;
1145 kboard_stack
= p
->next
;
1150 /* Handle errors that are not handled at inner levels
1151 by printing an error message and returning to the editor command loop. */
1157 Lisp_Object old_level
, old_length
;
1158 char macroerror
[50];
1160 #ifdef HAVE_X_WINDOWS
1161 if (display_hourglass_p
)
1162 cancel_hourglass ();
1165 if (!NILP (executing_macro
))
1167 if (executing_macro_iterations
== 1)
1168 sprintf (macroerror
, "After 1 kbd macro iteration: ");
1170 sprintf (macroerror
, "After %d kbd macro iterations: ",
1171 executing_macro_iterations
);
1176 Vstandard_output
= Qt
;
1177 Vstandard_input
= Qt
;
1178 Vexecuting_macro
= Qnil
;
1179 executing_macro
= Qnil
;
1180 current_kboard
->Vprefix_arg
= Qnil
;
1181 current_kboard
->Vlast_prefix_arg
= Qnil
;
1184 /* Avoid unquittable loop if data contains a circular list. */
1185 old_level
= Vprint_level
;
1186 old_length
= Vprint_length
;
1187 XSETFASTINT (Vprint_level
, 10);
1188 XSETFASTINT (Vprint_length
, 10);
1189 cmd_error_internal (data
, macroerror
);
1190 Vprint_level
= old_level
;
1191 Vprint_length
= old_length
;
1195 Vinhibit_quit
= Qnil
;
1197 if (command_loop_level
== 0 && minibuf_level
== 0)
1198 any_kboard_state ();
1201 return make_number (0);
1204 /* Take actions on handling an error. DATA is the data that describes
1207 CONTEXT is a C-string containing ASCII characters only which
1208 describes the context in which the error happened. If we need to
1209 generalize CONTEXT to allow multibyte characters, make it a Lisp
1213 cmd_error_internal (data
, context
)
1218 int kill_emacs_p
= 0;
1219 struct frame
*sf
= SELECTED_FRAME ();
1223 clear_message (1, 0);
1225 /* If the window system or terminal frame hasn't been initialized
1226 yet, or we're not interactive, it's best to dump this message out
1227 to stderr and exit. */
1228 if (!sf
->glyphs_initialized_p
1229 || FRAME_INITIAL_P (sf
)
1232 stream
= Qexternal_debugging_output
;
1238 message_log_maybe_newline ();
1243 /* The immediate context is not interesting for Quits,
1244 since they are asyncronous. */
1245 if (EQ (XCAR (data
), Qquit
))
1246 Vsignaling_function
= Qnil
;
1248 print_error_message (data
, stream
, context
, Vsignaling_function
);
1250 Vsignaling_function
= Qnil
;
1252 /* If the window system or terminal frame hasn't been initialized
1253 yet, or we're in -batch mode, this error should cause Emacs to exit. */
1257 Fkill_emacs (make_number (-1));
1261 Lisp_Object
command_loop_1 ();
1262 Lisp_Object
command_loop_2 ();
1263 Lisp_Object
top_level_1 ();
1265 /* Entry to editor-command-loop.
1266 This level has the catches for exiting/returning to editor command loop.
1267 It returns nil to exit recursive edit, t to abort it. */
1272 if (command_loop_level
> 0 || minibuf_level
> 0)
1275 val
= internal_catch (Qexit
, command_loop_2
, Qnil
);
1276 executing_macro
= Qnil
;
1282 internal_catch (Qtop_level
, top_level_1
, Qnil
);
1283 /* Reset single_kboard in case top-level set it while
1284 evaluating an -f option, or we are stuck there for some
1286 any_kboard_state ();
1287 internal_catch (Qtop_level
, command_loop_2
, Qnil
);
1288 executing_macro
= Qnil
;
1290 /* End of file in -batch run causes exit here. */
1296 /* Here we catch errors in execution of commands within the
1297 editing loop, and reenter the editing loop.
1298 When there is an error, cmd_error runs and returns a non-nil
1299 value to us. A value of nil means that command_loop_1 itself
1300 returned due to end of file (or end of kbd macro). */
1305 register Lisp_Object val
;
1308 val
= internal_condition_case (command_loop_1
, Qerror
, cmd_error
);
1309 while (!NILP (val
));
1317 return Feval (Vtop_level
);
1323 /* On entry to the outer level, run the startup file */
1324 if (!NILP (Vtop_level
))
1325 internal_condition_case (top_level_2
, Qerror
, cmd_error
);
1326 else if (!NILP (Vpurify_flag
))
1327 message ("Bare impure Emacs (standard Lisp code not loaded)");
1329 message ("Bare Emacs (standard Lisp code not loaded)");
1333 DEFUN ("top-level", Ftop_level
, Stop_level
, 0, 0, "",
1334 doc
: /* Exit all recursive editing levels. */)
1337 #ifdef HAVE_X_WINDOWS
1338 if (display_hourglass_p
)
1339 cancel_hourglass ();
1342 /* Unblock input if we enter with input blocked. This may happen if
1343 redisplay traps e.g. during tool-bar update with input blocked. */
1344 while (INPUT_BLOCKED_P
)
1347 return Fthrow (Qtop_level
, Qnil
);
1350 DEFUN ("exit-recursive-edit", Fexit_recursive_edit
, Sexit_recursive_edit
, 0, 0, "",
1351 doc
: /* Exit from the innermost recursive edit or minibuffer. */)
1354 if (command_loop_level
> 0 || minibuf_level
> 0)
1355 Fthrow (Qexit
, Qnil
);
1357 error ("No recursive edit is in progress");
1361 DEFUN ("abort-recursive-edit", Fabort_recursive_edit
, Sabort_recursive_edit
, 0, 0, "",
1362 doc
: /* Abort the command that requested this recursive edit or minibuffer input. */)
1365 if (command_loop_level
> 0 || minibuf_level
> 0)
1368 error ("No recursive edit is in progress");
1372 /* This is the actual command reading loop,
1373 sans error-handling encapsulation. */
1375 static int read_key_sequence
P_ ((Lisp_Object
*, int, Lisp_Object
,
1377 void safe_run_hooks
P_ ((Lisp_Object
));
1378 static void adjust_point_for_property
P_ ((int, int));
1380 /* Cancel hourglass from protect_unwind.
1382 #ifdef HAVE_X_WINDOWS
1384 cancel_hourglass_unwind (arg
)
1387 cancel_hourglass ();
1398 Lisp_Object keybuf
[30];
1401 int prev_modiff
= 0;
1402 struct buffer
*prev_buffer
= NULL
;
1404 int was_locked
= single_kboard
;
1406 int already_adjusted
= 0;
1408 current_kboard
->Vprefix_arg
= Qnil
;
1409 current_kboard
->Vlast_prefix_arg
= Qnil
;
1410 Vdeactivate_mark
= Qnil
;
1411 waiting_for_input
= 0;
1415 this_command_key_count
= 0;
1416 this_command_key_count_reset
= 0;
1417 this_single_command_key_start
= 0;
1419 if (NILP (Vmemory_full
))
1421 /* Make sure this hook runs after commands that get errors and
1422 throw to top level. */
1423 /* Note that the value cell will never directly contain nil
1424 if the symbol is a local variable. */
1425 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1426 safe_run_hooks (Qpost_command_hook
);
1428 /* If displaying a message, resize the echo area window to fit
1429 that message's size exactly. */
1430 if (!NILP (echo_area_buffer
[0]))
1431 resize_echo_area_exactly ();
1433 if (!NILP (Vdeferred_action_list
))
1434 safe_run_hooks (Qdeferred_action_function
);
1436 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1438 if (NILP (Vunread_command_events
)
1439 && NILP (Vunread_input_method_events
)
1440 && NILP (Vunread_post_input_method_events
)
1441 && NILP (Vexecuting_macro
)
1442 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1, 1)))
1443 safe_run_hooks (Qpost_command_idle_hook
);
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
, Qnil
);
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
;
1526 /* Read next key sequence; i gets its length. */
1527 i
= read_key_sequence (keybuf
, sizeof keybuf
/ sizeof keybuf
[0],
1530 /* A filter may have run while we were reading the input. */
1531 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
1533 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1534 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1538 /* Now we have read a key sequence of length I,
1539 or else I is 0 and we found end of file. */
1541 if (i
== 0) /* End of file -- happens only in */
1542 return Qnil
; /* a kbd macro, at the end. */
1543 /* -1 means read_key_sequence got a menu that was rejected.
1544 Just loop around and read another command. */
1548 this_command_key_count
= 0;
1549 this_command_key_count_reset
= 0;
1550 this_single_command_key_start
= 0;
1554 last_command_char
= keybuf
[i
- 1];
1556 /* If the previous command tried to force a specific window-start,
1557 forget about that, in case this command moves point far away
1558 from that position. But also throw away beg_unchanged and
1559 end_unchanged information in that case, so that redisplay will
1560 update the whole window properly. */
1561 if (!NILP (XWINDOW (selected_window
)->force_start
))
1564 XWINDOW (selected_window
)->force_start
= Qnil
;
1565 b
= XBUFFER (XWINDOW (selected_window
)->buffer
);
1566 BUF_BEG_UNCHANGED (b
) = BUF_END_UNCHANGED (b
) = 0;
1569 cmd
= read_key_sequence_cmd
;
1570 if (!NILP (Vexecuting_macro
))
1572 if (!NILP (Vquit_flag
))
1574 Vexecuting_macro
= Qt
;
1575 QUIT
; /* Make some noise. */
1576 /* Will return since macro now empty. */
1580 /* Do redisplay processing after this command except in special
1581 cases identified below. */
1582 prev_buffer
= current_buffer
;
1583 prev_modiff
= MODIFF
;
1584 last_point_position
= PT
;
1585 XSETBUFFER (last_point_position_buffer
, prev_buffer
);
1587 /* By default, we adjust point to a boundary of a region that
1588 has such a property that should be treated intangible
1589 (e.g. composition, display). But, some commands will set
1590 this variable differently. */
1591 Vdisable_point_adjustment
= Qnil
;
1593 /* Process filters and timers may have messed with deactivate-mark.
1594 reset it before we execute the command. */
1595 Vdeactivate_mark
= Qnil
;
1597 /* Remap command through active keymaps */
1598 Vthis_original_command
= cmd
;
1602 if (cmd1
= Fcommand_remapping (cmd
), !NILP (cmd1
))
1606 /* Execute the command. */
1608 Vthis_command
= cmd
;
1609 real_this_command
= cmd
;
1610 /* Note that the value cell will never directly contain nil
1611 if the symbol is a local variable. */
1612 if (!NILP (Vpre_command_hook
) && !NILP (Vrun_hooks
))
1613 safe_run_hooks (Qpre_command_hook
);
1615 already_adjusted
= 0;
1617 if (NILP (Vthis_command
))
1619 /* nil means key is undefined. */
1620 Lisp_Object keys
= Fvector (i
, keybuf
);
1621 keys
= Fkey_description (keys
, Qnil
);
1623 message_with_string ("%s is undefined", keys
, 0);
1624 current_kboard
->defining_kbd_macro
= Qnil
;
1625 update_mode_lines
= 1;
1626 current_kboard
->Vprefix_arg
= Qnil
;
1630 if (NILP (current_kboard
->Vprefix_arg
) && ! no_direct
)
1632 /* In case we jump to directly_done. */
1633 Vcurrent_prefix_arg
= current_kboard
->Vprefix_arg
;
1635 /* Recognize some common commands in common situations and
1636 do them directly. */
1637 if (EQ (Vthis_command
, Qforward_char
) && PT
< ZV
)
1639 struct Lisp_Char_Table
*dp
1640 = window_display_table (XWINDOW (selected_window
));
1641 lose
= FETCH_CHAR (PT_BYTE
);
1643 if (! NILP (Vpost_command_hook
))
1644 /* Put this before calling adjust_point_for_property
1645 so it will only get called once in any case. */
1647 if (current_buffer
== prev_buffer
1648 && last_point_position
!= PT
1649 && NILP (Vdisable_point_adjustment
)
1650 && NILP (Vglobal_disable_point_adjustment
))
1651 adjust_point_for_property (last_point_position
, 0);
1652 already_adjusted
= 1;
1653 if (PT
== last_point_position
+ 1
1655 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1656 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1657 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1658 && (lose
>= 0x20 && lose
< 0x7f)))
1659 : (lose
>= 0x20 && lose
< 0x7f))
1660 /* To extract the case of continuation on
1661 wide-column characters. */
1662 && (WIDTH_BY_CHAR_HEAD (FETCH_BYTE (PT_BYTE
)) == 1)
1663 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1665 && (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1667 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1669 && !windows_or_buffers_changed
1670 && EQ (current_buffer
->selective_display
, Qnil
)
1671 && !detect_input_pending ()
1672 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1673 && NILP (Vexecuting_macro
))
1674 direct_output_forward_char (1);
1677 else if (EQ (Vthis_command
, Qbackward_char
) && PT
> BEGV
)
1679 struct Lisp_Char_Table
*dp
1680 = window_display_table (XWINDOW (selected_window
));
1682 lose
= FETCH_CHAR (PT_BYTE
);
1683 if (! NILP (Vpost_command_hook
))
1685 if (current_buffer
== prev_buffer
1686 && last_point_position
!= PT
1687 && NILP (Vdisable_point_adjustment
)
1688 && NILP (Vglobal_disable_point_adjustment
))
1689 adjust_point_for_property (last_point_position
, 0);
1690 already_adjusted
= 1;
1691 if (PT
== last_point_position
- 1
1693 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1694 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1695 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1696 && (lose
>= 0x20 && lose
< 0x7f)))
1697 : (lose
>= 0x20 && lose
< 0x7f))
1698 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1700 && (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1702 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1704 && !windows_or_buffers_changed
1705 && EQ (current_buffer
->selective_display
, Qnil
)
1706 && !detect_input_pending ()
1707 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1708 && NILP (Vexecuting_macro
))
1709 direct_output_forward_char (-1);
1712 else if (EQ (Vthis_command
, Qself_insert_command
)
1713 /* Try this optimization only on char keystrokes. */
1714 && NATNUMP (last_command_char
)
1715 && CHAR_VALID_P (XFASTINT (last_command_char
), 0))
1718 = translate_char (Vtranslation_table_for_input
,
1719 XFASTINT (last_command_char
), 0, 0, 0);
1721 if (NILP (Vexecuting_macro
)
1722 && !EQ (minibuf_window
, selected_window
))
1724 if (!nonundocount
|| nonundocount
>= 20)
1732 lose
= ((XFASTINT (XWINDOW (selected_window
)->last_modified
)
1734 || (XFASTINT (XWINDOW (selected_window
)->last_overlay_modified
)
1736 || (XFASTINT (XWINDOW (selected_window
)->last_point
)
1738 || MODIFF
<= SAVE_MODIFF
1739 || windows_or_buffers_changed
1740 || !EQ (current_buffer
->selective_display
, Qnil
)
1741 || detect_input_pending ()
1742 || !NILP (XWINDOW (selected_window
)->column_number_displayed
)
1743 || !NILP (Vexecuting_macro
));
1745 value
= internal_self_insert (c
, 0);
1750 if (! NILP (Vpost_command_hook
))
1751 /* Put this before calling adjust_point_for_property
1752 so it will only get called once in any case. */
1755 /* VALUE == 1 when AFTER-CHANGE functions are
1756 installed which is the case most of the time
1757 because FONT-LOCK installs one. */
1758 if (!lose
&& !value
)
1759 direct_output_for_insert (c
);
1764 /* Here for a command that isn't executed directly */
1767 #ifdef HAVE_X_WINDOWS
1768 int scount
= SPECPDL_INDEX ();
1770 if (display_hourglass_p
1771 && NILP (Vexecuting_macro
))
1773 record_unwind_protect (cancel_hourglass_unwind
, Qnil
);
1779 if (NILP (current_kboard
->Vprefix_arg
))
1781 Fcommand_execute (Vthis_command
, Qnil
, Qnil
, Qnil
);
1783 #ifdef HAVE_X_WINDOWS
1784 /* Do not check display_hourglass_p here, because
1785 Fcommand_execute could change it, but we should cancel
1786 hourglass cursor anyway.
1787 But don't cancel the hourglass within a macro
1788 just because a command in the macro finishes. */
1789 if (NILP (Vexecuting_macro
))
1790 unbind_to (scount
, Qnil
);
1795 current_kboard
->Vlast_prefix_arg
= Vcurrent_prefix_arg
;
1797 /* Note that the value cell will never directly contain nil
1798 if the symbol is a local variable. */
1799 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1800 safe_run_hooks (Qpost_command_hook
);
1802 /* If displaying a message, resize the echo area window to fit
1803 that message's size exactly. */
1804 if (!NILP (echo_area_buffer
[0]))
1805 resize_echo_area_exactly ();
1807 if (!NILP (Vdeferred_action_list
))
1808 safe_run_hooks (Qdeferred_action_function
);
1810 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1812 if (NILP (Vunread_command_events
)
1813 && NILP (Vunread_input_method_events
)
1814 && NILP (Vunread_post_input_method_events
)
1815 && NILP (Vexecuting_macro
)
1816 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1, 1)))
1817 safe_run_hooks (Qpost_command_idle_hook
);
1820 /* If there is a prefix argument,
1821 1) We don't want Vlast_command to be ``universal-argument''
1822 (that would be dumb), so don't set Vlast_command,
1823 2) we want to leave echoing on so that the prefix will be
1824 echoed as part of this key sequence, so don't call
1826 3) we want to leave this_command_key_count non-zero, so that
1827 read_char will realize that it is re-reading a character, and
1828 not echo it a second time.
1830 If the command didn't actually create a prefix arg,
1831 but is merely a frame event that is transparent to prefix args,
1832 then the above doesn't apply. */
1833 if (NILP (current_kboard
->Vprefix_arg
) || CONSP (last_command_char
))
1835 current_kboard
->Vlast_command
= Vthis_command
;
1836 current_kboard
->Vreal_last_command
= real_this_command
;
1838 this_command_key_count
= 0;
1839 this_command_key_count_reset
= 0;
1840 this_single_command_key_start
= 0;
1843 if (!NILP (current_buffer
->mark_active
) && !NILP (Vrun_hooks
))
1845 /* Setting transient-mark-mode to `only' is a way of
1846 turning it on for just one command. */
1848 if (EQ (Vtransient_mark_mode
, Qidentity
))
1849 Vtransient_mark_mode
= Qnil
;
1850 if (EQ (Vtransient_mark_mode
, Qonly
))
1851 Vtransient_mark_mode
= Qidentity
;
1853 if (!NILP (Vdeactivate_mark
) && !NILP (Vtransient_mark_mode
))
1855 /* We could also call `deactivate'mark'. */
1856 if (EQ (Vtransient_mark_mode
, Qlambda
))
1857 Vtransient_mark_mode
= Qnil
;
1860 current_buffer
->mark_active
= Qnil
;
1861 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
1864 else if (current_buffer
!= prev_buffer
|| MODIFF
!= prev_modiff
)
1865 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
1870 if (current_buffer
== prev_buffer
1871 && last_point_position
!= PT
1872 && NILP (Vdisable_point_adjustment
)
1873 && NILP (Vglobal_disable_point_adjustment
)
1874 && !already_adjusted
)
1875 adjust_point_for_property (last_point_position
, MODIFF
!= prev_modiff
);
1877 /* Install chars successfully executed in kbd macro. */
1879 if (!NILP (current_kboard
->defining_kbd_macro
)
1880 && NILP (current_kboard
->Vprefix_arg
))
1881 finalize_kbd_macro_chars ();
1885 any_kboard_state ();
1890 extern Lisp_Object Qcomposition
, Qdisplay
;
1892 /* Adjust point to a boundary of a region that has such a property
1893 that should be treated intangible. For the moment, we check
1894 `composition', `display' and `invisible' properties.
1895 LAST_PT is the last position of point. */
1897 extern Lisp_Object Qafter_string
, Qbefore_string
;
1898 extern Lisp_Object get_pos_property
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
1901 adjust_point_for_property (last_pt
, modified
)
1906 Lisp_Object val
, overlay
, tmp
;
1907 int check_composition
= 1, check_display
= 1, check_invisible
= 1;
1910 /* FIXME: cycling is probably not necessary because these properties
1911 can't be usefully combined anyway. */
1912 while (check_composition
|| check_display
|| check_invisible
)
1914 if (check_composition
1915 && PT
> BEGV
&& PT
< ZV
1916 && get_property_and_range (PT
, Qcomposition
, &val
, &beg
, &end
, Qnil
)
1917 && COMPOSITION_VALID_P (beg
, end
, val
)
1918 && beg
< PT
/* && end > PT <- It's always the case. */
1919 && (last_pt
<= beg
|| last_pt
>= end
))
1922 SET_PT (PT
< last_pt
? beg
: end
);
1923 check_display
= check_invisible
= 1;
1925 check_composition
= 0;
1927 && PT
> BEGV
&& PT
< ZV
1928 && !NILP (val
= get_char_property_and_overlay
1929 (make_number (PT
), Qdisplay
, Qnil
, &overlay
))
1930 && display_prop_intangible_p (val
)
1931 && (!OVERLAYP (overlay
)
1932 ? get_property_and_range (PT
, Qdisplay
, &val
, &beg
, &end
, Qnil
)
1933 : (beg
= OVERLAY_POSITION (OVERLAY_START (overlay
)),
1934 end
= OVERLAY_POSITION (OVERLAY_END (overlay
))))
1935 && beg
< PT
) /* && end > PT <- It's always the case. */
1938 SET_PT (PT
< last_pt
? beg
: end
);
1939 check_composition
= check_invisible
= 1;
1942 if (check_invisible
&& PT
> BEGV
&& PT
< ZV
)
1944 int inv
, ellipsis
= 0;
1947 /* Find boundaries `beg' and `end' of the invisible area, if any. */
1949 && !NILP (val
= get_char_property_and_overlay
1950 (make_number (end
), Qinvisible
, Qnil
, &overlay
))
1951 && (inv
= TEXT_PROP_MEANS_INVISIBLE (val
)))
1953 ellipsis
= ellipsis
|| inv
> 1
1954 || (OVERLAYP (overlay
)
1955 && (!NILP (Foverlay_get (overlay
, Qafter_string
))
1956 || !NILP (Foverlay_get (overlay
, Qbefore_string
))));
1957 tmp
= Fnext_single_char_property_change
1958 (make_number (end
), Qinvisible
, Qnil
, Qnil
);
1959 end
= NATNUMP (tmp
) ? XFASTINT (tmp
) : ZV
;
1962 && !NILP (val
= get_char_property_and_overlay
1963 (make_number (beg
- 1), Qinvisible
, Qnil
, &overlay
))
1964 && (inv
= TEXT_PROP_MEANS_INVISIBLE (val
)))
1966 ellipsis
= ellipsis
|| inv
> 1
1967 || (OVERLAYP (overlay
)
1968 && (!NILP (Foverlay_get (overlay
, Qafter_string
))
1969 || !NILP (Foverlay_get (overlay
, Qbefore_string
))));
1970 tmp
= Fprevious_single_char_property_change
1971 (make_number (beg
), Qinvisible
, Qnil
, Qnil
);
1972 beg
= NATNUMP (tmp
) ? XFASTINT (tmp
) : BEGV
;
1975 /* Move away from the inside area. */
1976 if (beg
< PT
&& end
> PT
)
1978 SET_PT ((orig_pt
== PT
&& (last_pt
< beg
|| last_pt
> end
))
1979 /* We haven't moved yet (so we don't need to fear
1980 infinite-looping) and we were outside the range
1981 before (so either end of the range still corresponds
1982 to a move in the right direction): pretend we moved
1983 less than we actually did, so that we still have
1984 more freedom below in choosing which end of the range
1986 ? (orig_pt
= -1, PT
< last_pt
? end
: beg
)
1987 /* We either have moved already or the last point
1988 was already in the range: we don't get to choose
1989 which end of the range we have to go to. */
1990 : (PT
< last_pt
? beg
: end
));
1991 check_composition
= check_display
= 1;
1993 #if 0 /* This assertion isn't correct, because SET_PT may end up setting
1994 the point to something other than its argument, due to
1995 point-motion hooks, intangibility, etc. */
1996 xassert (PT
== beg
|| PT
== end
);
1999 /* Pretend the area doesn't exist if the buffer is not
2001 if (!modified
&& !ellipsis
&& beg
< end
)
2003 if (last_pt
== beg
&& PT
== end
&& end
< ZV
)
2004 (check_composition
= check_display
= 1, SET_PT (end
+ 1));
2005 else if (last_pt
== end
&& PT
== beg
&& beg
> BEGV
)
2006 (check_composition
= check_display
= 1, SET_PT (beg
- 1));
2007 else if (PT
== ((PT
< last_pt
) ? beg
: end
))
2008 /* We've already moved as far as we can. Trying to go
2009 to the other end would mean moving backwards and thus
2010 could lead to an infinite loop. */
2012 else if (val
= get_pos_property (make_number (PT
),
2014 TEXT_PROP_MEANS_INVISIBLE (val
)
2015 && (val
= get_pos_property
2016 (make_number (PT
== beg
? end
: beg
),
2018 !TEXT_PROP_MEANS_INVISIBLE (val
)))
2019 (check_composition
= check_display
= 1,
2020 SET_PT (PT
== beg
? end
: beg
));
2023 check_invisible
= 0;
2027 /* Subroutine for safe_run_hooks: run the hook HOOK. */
2030 safe_run_hooks_1 (hook
)
2033 return call1 (Vrun_hooks
, Vinhibit_quit
);
2036 /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */
2039 safe_run_hooks_error (data
)
2042 Lisp_Object args
[3];
2043 args
[0] = build_string ("Error in %s: %s");
2044 args
[1] = Vinhibit_quit
;
2047 return Fset (Vinhibit_quit
, Qnil
);
2050 /* If we get an error while running the hook, cause the hook variable
2051 to be nil. Also inhibit quits, so that C-g won't cause the hook
2052 to mysteriously evaporate. */
2055 safe_run_hooks (hook
)
2058 int count
= SPECPDL_INDEX ();
2059 specbind (Qinhibit_quit
, hook
);
2061 internal_condition_case (safe_run_hooks_1
, Qt
, safe_run_hooks_error
);
2063 unbind_to (count
, Qnil
);
2067 /* Number of seconds between polling for input. This is a Lisp
2068 variable that can be bound. */
2070 EMACS_INT polling_period
;
2072 /* Nonzero means polling for input is temporarily suppressed. */
2074 int poll_suppress_count
;
2076 /* Asynchronous timer for polling. */
2078 struct atimer
*poll_timer
;
2081 #ifdef POLL_FOR_INPUT
2083 /* Poll for input, so what we catch a C-g if it comes in. This
2084 function is called from x_make_frame_visible, see comment
2090 if (interrupt_input_blocked
== 0
2091 && !waiting_for_input
)
2092 read_avail_input (0);
2095 /* Timer callback function for poll_timer. TIMER is equal to
2099 poll_for_input (timer
)
2100 struct atimer
*timer
;
2102 if (poll_suppress_count
== 0)
2104 interrupt_input_pending
= 1;
2106 poll_for_input_1 ();
2110 #endif /* POLL_FOR_INPUT */
2112 /* Begin signals to poll for input, if they are appropriate.
2113 This function is called unconditionally from various places. */
2118 #ifdef POLL_FOR_INPUT
2119 /* XXX This condition was (read_socket_hook && !interrupt_input),
2120 but read_socket_hook is not global anymore. Let's pretend that
2122 if (!interrupt_input
)
2124 /* Turn alarm handling on unconditionally. It might have
2125 been turned off in process.c. */
2126 turn_on_atimers (1);
2128 /* If poll timer doesn't exist, are we need one with
2129 a different interval, start a new one. */
2130 if (poll_timer
== NULL
2131 || EMACS_SECS (poll_timer
->interval
) != polling_period
)
2133 EMACS_TIME interval
;
2136 cancel_atimer (poll_timer
);
2138 EMACS_SET_SECS_USECS (interval
, polling_period
, 0);
2139 poll_timer
= start_atimer (ATIMER_CONTINUOUS
, interval
,
2140 poll_for_input
, NULL
);
2143 /* Let the timer's callback function poll for input
2144 if this becomes zero. */
2145 --poll_suppress_count
;
2150 /* Nonzero if we are using polling to handle input asynchronously. */
2153 input_polling_used ()
2155 #ifdef POLL_FOR_INPUT
2156 /* XXX This condition was (read_socket_hook && !interrupt_input),
2157 but read_socket_hook is not global anymore. Let's pretend that
2159 return !interrupt_input
;
2165 /* Turn off polling. */
2170 #ifdef POLL_FOR_INPUT
2171 /* XXX This condition was (read_socket_hook && !interrupt_input),
2172 but read_socket_hook is not global anymore. Let's pretend that
2174 if (!interrupt_input
)
2175 ++poll_suppress_count
;
2179 /* Set the value of poll_suppress_count to COUNT
2180 and start or stop polling accordingly. */
2183 set_poll_suppress_count (count
)
2186 #ifdef POLL_FOR_INPUT
2187 if (count
== 0 && poll_suppress_count
!= 0)
2189 poll_suppress_count
= 1;
2192 else if (count
!= 0 && poll_suppress_count
== 0)
2196 poll_suppress_count
= count
;
2200 /* Bind polling_period to a value at least N.
2201 But don't decrease it. */
2204 bind_polling_period (n
)
2207 #ifdef POLL_FOR_INPUT
2208 int new = polling_period
;
2213 stop_other_atimers (poll_timer
);
2215 specbind (Qpolling_period
, make_number (new));
2216 /* Start a new alarm with the new period. */
2221 /* Apply the control modifier to CHARACTER. */
2227 /* Save the upper bits here. */
2228 int upper
= c
& ~0177;
2232 /* Everything in the columns containing the upper-case letters
2233 denotes a control character. */
2234 if (c
>= 0100 && c
< 0140)
2238 /* Set the shift modifier for a control char
2239 made from a shifted letter. But only for letters! */
2240 if (oc
>= 'A' && oc
<= 'Z')
2241 c
|= shift_modifier
;
2244 /* The lower-case letters denote control characters too. */
2245 else if (c
>= 'a' && c
<= 'z')
2248 /* Include the bits for control and shift
2249 only if the basic ASCII code can't indicate them. */
2253 /* Replace the high bits. */
2254 c
|= (upper
& ~ctrl_modifier
);
2259 /* Display the help-echo property of the character after the mouse pointer.
2260 Either show it in the echo area, or call show-help-function to display
2261 it by other means (maybe in a tooltip).
2263 If HELP is nil, that means clear the previous help echo.
2265 If HELP is a string, display that string. If HELP is a function,
2266 call it with OBJECT and POS as arguments; the function should
2267 return a help string or nil for none. For all other types of HELP,
2268 evaluate it to obtain a string.
2270 WINDOW is the window in which the help was generated, if any.
2271 It is nil if not in a window.
2273 If OBJECT is a buffer, POS is the position in the buffer where the
2274 `help-echo' text property was found.
2276 If OBJECT is an overlay, that overlay has a `help-echo' property,
2277 and POS is the position in the overlay's buffer under the mouse.
2279 If OBJECT is a string (an overlay string or a string displayed with
2280 the `display' property). POS is the position in that string under
2283 OK_TO_OVERWRITE_KEYSTROKE_ECHO non-zero means it's okay if the help
2284 echo overwrites a keystroke echo currently displayed in the echo
2287 Note: this function may only be called with HELP nil or a string
2288 from X code running asynchronously. */
2291 show_help_echo (help
, window
, object
, pos
, ok_to_overwrite_keystroke_echo
)
2292 Lisp_Object help
, window
, object
, pos
;
2293 int ok_to_overwrite_keystroke_echo
;
2295 if (!NILP (help
) && !STRINGP (help
))
2297 if (FUNCTIONP (help
))
2299 Lisp_Object args
[4];
2304 help
= safe_call (4, args
);
2307 help
= safe_eval (help
);
2309 if (!STRINGP (help
))
2314 if (!noninteractive
&& STRINGP (help
))
2315 help
= call1 (Qmouse_fixup_help_message
, help
);
2318 if (STRINGP (help
) || NILP (help
))
2320 if (!NILP (Vshow_help_function
))
2321 call1 (Vshow_help_function
, help
);
2322 else if (/* Don't overwrite minibuffer contents. */
2323 !MINI_WINDOW_P (XWINDOW (selected_window
))
2324 /* Don't overwrite a keystroke echo. */
2325 && (NILP (echo_message_buffer
)
2326 || ok_to_overwrite_keystroke_echo
)
2327 /* Don't overwrite a prompt. */
2328 && !cursor_in_echo_area
)
2332 int count
= SPECPDL_INDEX ();
2334 if (!help_echo_showing_p
)
2335 Vpre_help_message
= current_message ();
2337 specbind (Qmessage_truncate_lines
, Qt
);
2338 message3_nolog (help
, SBYTES (help
),
2339 STRING_MULTIBYTE (help
));
2340 unbind_to (count
, Qnil
);
2342 else if (STRINGP (Vpre_help_message
))
2344 message3_nolog (Vpre_help_message
,
2345 SBYTES (Vpre_help_message
),
2346 STRING_MULTIBYTE (Vpre_help_message
));
2347 Vpre_help_message
= Qnil
;
2353 help_echo_showing_p
= STRINGP (help
);
2359 /* Input of single characters from keyboard */
2361 Lisp_Object
print_help ();
2362 static Lisp_Object
kbd_buffer_get_event ();
2363 static void record_char ();
2366 static jmp_buf wrong_kboard_jmpbuf
;
2369 #define STOP_POLLING \
2370 do { if (! polling_stopped_here) stop_polling (); \
2371 polling_stopped_here = 1; } while (0)
2373 #define RESUME_POLLING \
2374 do { if (polling_stopped_here) start_polling (); \
2375 polling_stopped_here = 0; } while (0)
2377 /* read a character from the keyboard; call the redisplay if needed */
2378 /* commandflag 0 means do not do auto-saving, but do do redisplay.
2379 -1 means do not do redisplay, but do do autosaving.
2382 /* The arguments MAPS and NMAPS are for menu prompting.
2383 MAPS is an array of keymaps; NMAPS is the length of MAPS.
2385 PREV_EVENT is the previous input event, or nil if we are reading
2386 the first event of a key sequence (or not reading a key sequence).
2387 If PREV_EVENT is t, that is a "magic" value that says
2388 not to run input methods, but in other respects to act as if
2389 not reading a key sequence.
2391 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
2392 if we used a mouse menu to read the input, or zero otherwise. If
2393 USED_MOUSE_MENU is null, we don't dereference it.
2395 Value is t if we showed a menu and the user rejected it. */
2398 read_char (commandflag
, nmaps
, maps
, prev_event
, used_mouse_menu
)
2402 Lisp_Object prev_event
;
2403 int *used_mouse_menu
;
2405 volatile Lisp_Object c
;
2407 jmp_buf local_getcjmp
;
2409 volatile int key_already_recorded
= 0;
2410 Lisp_Object tem
, save
;
2411 volatile Lisp_Object previous_echo_area_message
;
2412 volatile Lisp_Object also_record
;
2413 volatile int reread
;
2414 struct gcpro gcpro1
, gcpro2
;
2415 int polling_stopped_here
= 0;
2419 #if 0 /* This was commented out as part of fixing echo for C-u left. */
2420 before_command_key_count
= this_command_key_count
;
2421 before_command_echo_length
= echo_length ();
2424 previous_echo_area_message
= Qnil
;
2426 GCPRO2 (c
, previous_echo_area_message
);
2431 if (CONSP (Vunread_post_input_method_events
))
2433 c
= XCAR (Vunread_post_input_method_events
);
2434 Vunread_post_input_method_events
2435 = XCDR (Vunread_post_input_method_events
);
2437 /* Undo what read_char_x_menu_prompt did when it unread
2438 additional keys returned by Fx_popup_menu. */
2440 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
)))
2448 if (unread_command_char
!= -1)
2450 XSETINT (c
, unread_command_char
);
2451 unread_command_char
= -1;
2457 if (CONSP (Vunread_command_events
))
2459 c
= XCAR (Vunread_command_events
);
2460 Vunread_command_events
= XCDR (Vunread_command_events
);
2462 /* Undo what read_char_x_menu_prompt did when it unread
2463 additional keys returned by Fx_popup_menu. */
2465 && EQ (XCDR (c
), Qdisabled
)
2466 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
))))
2469 /* If the queued event is something that used the mouse,
2470 set used_mouse_menu accordingly. */
2472 && (EQ (c
, Qtool_bar
) || EQ (c
, Qmenu_bar
)))
2473 *used_mouse_menu
= 1;
2476 goto reread_for_input_method
;
2479 if (CONSP (Vunread_input_method_events
))
2481 c
= XCAR (Vunread_input_method_events
);
2482 Vunread_input_method_events
= XCDR (Vunread_input_method_events
);
2484 /* Undo what read_char_x_menu_prompt did when it unread
2485 additional keys returned by Fx_popup_menu. */
2487 && (SYMBOLP (XCAR (c
)) || INTEGERP (XCAR (c
)))
2491 goto reread_for_input_method
;
2494 this_command_key_count_reset
= 0;
2496 if (!NILP (Vexecuting_macro
))
2498 /* We set this to Qmacro; since that's not a frame, nobody will
2499 try to switch frames on us, and the selected window will
2502 Since this event came from a macro, it would be misleading to
2503 leave internal_last_event_frame set to wherever the last
2504 real event came from. Normally, a switch-frame event selects
2505 internal_last_event_frame after each command is read, but
2506 events read from a macro should never cause a new frame to be
2508 Vlast_event_frame
= internal_last_event_frame
= Qmacro
;
2510 /* Exit the macro if we are at the end.
2511 Also, some things replace the macro with t
2512 to force an early exit. */
2513 if (EQ (Vexecuting_macro
, Qt
)
2514 || executing_macro_index
>= XFASTINT (Flength (Vexecuting_macro
)))
2520 c
= Faref (Vexecuting_macro
, make_number (executing_macro_index
));
2521 if (STRINGP (Vexecuting_macro
)
2522 && (XINT (c
) & 0x80) && (XUINT (c
) <= 0xff))
2523 XSETFASTINT (c
, CHAR_META
| (XINT (c
) & ~0x80));
2525 executing_macro_index
++;
2530 if (!NILP (unread_switch_frame
))
2532 c
= unread_switch_frame
;
2533 unread_switch_frame
= Qnil
;
2535 /* This event should make it into this_command_keys, and get echoed
2536 again, so we do not set `reread'. */
2540 /* if redisplay was requested */
2541 if (commandflag
>= 0)
2543 /* If there is pending input, process any events which are not
2544 user-visible, such as X selection_request events. */
2546 || detect_input_pending_run_timers (0))
2547 swallow_events (0); /* may clear input_pending */
2549 /* Redisplay if no pending input. */
2550 while (!input_pending
)
2552 if (help_echo_showing_p
&& !EQ (selected_window
, minibuf_window
))
2553 redisplay_preserve_echo_area (5);
2558 /* Normal case: no input arrived during redisplay. */
2561 /* Input arrived and pre-empted redisplay.
2562 Process any events which are not user-visible. */
2564 /* If that cleared input_pending, try again to redisplay. */
2568 /* Message turns off echoing unless more keystrokes turn it on again.
2570 The code in 20.x for the condition was
2572 1. echo_area_glyphs && *echo_area_glyphs
2573 2. && echo_area_glyphs != current_kboard->echobuf
2574 3. && ok_to_echo_at_next_pause != echo_area_glyphs
2576 (1) means there's a current message displayed
2578 (2) means it's not the message from echoing from the current
2581 (3) There's only one place in 20.x where ok_to_echo_at_next_pause
2582 is set to a non-null value. This is done in read_char and it is
2583 set to echo_area_glyphs after a call to echo_char. That means
2584 ok_to_echo_at_next_pause is either null or
2585 current_kboard->echobuf with the appropriate current_kboard at
2588 So, condition (3) means in clear text ok_to_echo_at_next_pause
2589 must be either null, or the current message isn't from echoing at
2590 all, or it's from echoing from a different kboard than the
2593 if (/* There currently is something in the echo area. */
2594 !NILP (echo_area_buffer
[0])
2595 && (/* And it's either not from echoing. */
2596 !EQ (echo_area_buffer
[0], echo_message_buffer
)
2597 /* Or it's an echo from a different kboard. */
2598 || echo_kboard
!= current_kboard
2599 /* Or we explicitly allow overwriting whatever there is. */
2600 || ok_to_echo_at_next_pause
== NULL
))
2605 /* Try reading a character via menu prompting in the minibuf.
2606 Try this before the sit-for, because the sit-for
2607 would do the wrong thing if we are supposed to do
2608 menu prompting. If EVENT_HAS_PARAMETERS then we are reading
2609 after a mouse event so don't try a minibuf menu. */
2611 if (nmaps
> 0 && INTERACTIVE
2612 && !NILP (prev_event
) && ! EVENT_HAS_PARAMETERS (prev_event
)
2613 /* Don't bring up a menu if we already have another event. */
2614 && NILP (Vunread_command_events
)
2615 && unread_command_char
< 0
2616 && !detect_input_pending_run_timers (0))
2618 c
= read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
);
2621 key_already_recorded
= 1;
2626 /* Make a longjmp point for quits to use, but don't alter getcjmp just yet.
2627 We will do that below, temporarily for short sections of code,
2628 when appropriate. local_getcjmp must be in effect
2629 around any call to sit_for or kbd_buffer_get_event;
2630 it *must not* be in effect when we call redisplay. */
2632 if (_setjmp (local_getcjmp
))
2634 XSETINT (c
, quit_char
);
2635 internal_last_event_frame
= selected_frame
;
2636 Vlast_event_frame
= internal_last_event_frame
;
2637 /* If we report the quit char as an event,
2638 don't do so more than once. */
2639 if (!NILP (Vinhibit_quit
))
2644 KBOARD
*kb
= FRAME_KBOARD (XFRAME (selected_frame
));
2645 if (kb
!= current_kboard
)
2647 Lisp_Object link
= kb
->kbd_queue
;
2648 /* We shouldn't get here if we were in single-kboard mode! */
2653 while (CONSP (XCDR (link
)))
2655 if (!NILP (XCDR (link
)))
2659 kb
->kbd_queue
= Fcons (c
, Qnil
);
2661 XSETCDR (link
, Fcons (c
, Qnil
));
2662 kb
->kbd_queue_has_data
= 1;
2663 current_kboard
= kb
;
2664 /* This is going to exit from read_char
2665 so we had better get rid of this frame's stuff. */
2667 longjmp (wrong_kboard_jmpbuf
, 1);
2674 timer_start_idle ();
2676 /* If in middle of key sequence and minibuffer not active,
2677 start echoing if enough time elapses. */
2679 if (minibuf_level
== 0
2680 && !current_kboard
->immediate_echo
2681 && this_command_key_count
> 0
2683 && (FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
2684 && NILP (Fzerop (Vecho_keystrokes
))
2685 && (/* No message. */
2686 NILP (echo_area_buffer
[0])
2687 /* Or empty message. */
2688 || (BUF_BEG (XBUFFER (echo_area_buffer
[0]))
2689 == BUF_Z (XBUFFER (echo_area_buffer
[0])))
2690 /* Or already echoing from same kboard. */
2691 || (echo_kboard
&& ok_to_echo_at_next_pause
== echo_kboard
)
2692 /* Or not echoing before and echoing allowed. */
2693 || (!echo_kboard
&& ok_to_echo_at_next_pause
)))
2697 /* After a mouse event, start echoing right away.
2698 This is because we are probably about to display a menu,
2699 and we don't want to delay before doing so. */
2700 if (EVENT_HAS_PARAMETERS (prev_event
))
2705 double duration
= extract_float (Vecho_keystrokes
);
2706 sec
= (int) duration
;
2707 usec
= (duration
- sec
) * 1000000;
2708 save_getcjmp (save_jump
);
2709 restore_getcjmp (local_getcjmp
);
2710 tem0
= sit_for (sec
, usec
, 1, 1, 0);
2711 restore_getcjmp (save_jump
);
2713 && ! CONSP (Vunread_command_events
))
2718 /* Maybe auto save due to number of keystrokes. */
2720 if (commandflag
!= 0
2721 && auto_save_interval
> 0
2722 && num_nonmacro_input_events
- last_auto_save
> max (auto_save_interval
, 20)
2723 && !detect_input_pending_run_timers (0))
2725 Fdo_auto_save (Qnil
, Qnil
);
2726 /* Hooks can actually change some buffers in auto save. */
2730 /* Try reading using an X menu.
2731 This is never confused with reading using the minibuf
2732 because the recursive call of read_char in read_char_minibuf_menu_prompt
2733 does not pass on any keymaps. */
2735 if (nmaps
> 0 && INTERACTIVE
2736 && !NILP (prev_event
)
2737 && EVENT_HAS_PARAMETERS (prev_event
)
2738 && !EQ (XCAR (prev_event
), Qmenu_bar
)
2739 && !EQ (XCAR (prev_event
), Qtool_bar
)
2740 /* Don't bring up a menu if we already have another event. */
2741 && NILP (Vunread_command_events
)
2742 && unread_command_char
< 0)
2744 c
= read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
);
2746 /* Now that we have read an event, Emacs is not idle. */
2752 /* Maybe autosave and/or garbage collect due to idleness. */
2754 if (INTERACTIVE
&& NILP (c
))
2756 int delay_level
, buffer_size
;
2758 /* Slow down auto saves logarithmically in size of current buffer,
2759 and garbage collect while we're at it. */
2760 if (! MINI_WINDOW_P (XWINDOW (selected_window
)))
2761 last_non_minibuf_size
= Z
- BEG
;
2762 buffer_size
= (last_non_minibuf_size
>> 8) + 1;
2764 while (buffer_size
> 64)
2765 delay_level
++, buffer_size
-= buffer_size
>> 2;
2766 if (delay_level
< 4) delay_level
= 4;
2767 /* delay_level is 4 for files under around 50k, 7 at 100k,
2768 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */
2770 /* Auto save if enough time goes by without input. */
2771 if (commandflag
!= 0
2772 && num_nonmacro_input_events
> last_auto_save
2773 && INTEGERP (Vauto_save_timeout
)
2774 && XINT (Vauto_save_timeout
) > 0)
2778 save_getcjmp (save_jump
);
2779 restore_getcjmp (local_getcjmp
);
2780 tem0
= sit_for (delay_level
* XFASTINT (Vauto_save_timeout
) / 4,
2782 restore_getcjmp (save_jump
);
2785 && ! CONSP (Vunread_command_events
))
2787 Fdo_auto_save (Qnil
, Qnil
);
2789 /* If we have auto-saved and there is still no input
2790 available, garbage collect if there has been enough
2791 consing going on to make it worthwhile. */
2792 if (!detect_input_pending_run_timers (0)
2793 && consing_since_gc
> gc_cons_threshold
/ 2)
2794 Fgarbage_collect ();
2801 /* If this has become non-nil here, it has been set by a timer
2802 or sentinel or filter. */
2803 if (CONSP (Vunread_command_events
))
2805 c
= XCAR (Vunread_command_events
);
2806 Vunread_command_events
= XCDR (Vunread_command_events
);
2809 /* Read something from current KBOARD's side queue, if possible. */
2813 if (current_kboard
->kbd_queue_has_data
)
2815 if (!CONSP (current_kboard
->kbd_queue
))
2817 c
= XCAR (current_kboard
->kbd_queue
);
2818 current_kboard
->kbd_queue
2819 = XCDR (current_kboard
->kbd_queue
);
2820 if (NILP (current_kboard
->kbd_queue
))
2821 current_kboard
->kbd_queue_has_data
= 0;
2822 input_pending
= readable_events (0);
2823 if (EVENT_HAS_PARAMETERS (c
)
2824 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qswitch_frame
))
2825 internal_last_event_frame
= XCAR (XCDR (c
));
2826 Vlast_event_frame
= internal_last_event_frame
;
2831 /* If current_kboard's side queue is empty check the other kboards.
2832 If one of them has data that we have not yet seen here,
2833 switch to it and process the data waiting for it.
2835 Note: if the events queued up for another kboard
2836 have already been seen here, and therefore are not a complete command,
2837 the kbd_queue_has_data field is 0, so we skip that kboard here.
2838 That's to avoid an infinite loop switching between kboards here. */
2839 if (NILP (c
) && !single_kboard
)
2842 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
2843 if (kb
->kbd_queue_has_data
)
2845 current_kboard
= kb
;
2846 /* This is going to exit from read_char
2847 so we had better get rid of this frame's stuff. */
2849 longjmp (wrong_kboard_jmpbuf
, 1);
2858 /* Finally, we read from the main queue,
2859 and if that gives us something we can't use yet, we put it on the
2860 appropriate side queue and try again. */
2866 /* Actually read a character, waiting if necessary. */
2867 save_getcjmp (save_jump
);
2868 restore_getcjmp (local_getcjmp
);
2869 timer_start_idle ();
2870 c
= kbd_buffer_get_event (&kb
, used_mouse_menu
);
2871 restore_getcjmp (save_jump
);
2874 if (! NILP (c
) && (kb
!= current_kboard
))
2876 Lisp_Object link
= kb
->kbd_queue
;
2879 while (CONSP (XCDR (link
)))
2881 if (!NILP (XCDR (link
)))
2885 kb
->kbd_queue
= Fcons (c
, Qnil
);
2887 XSETCDR (link
, Fcons (c
, Qnil
));
2888 kb
->kbd_queue_has_data
= 1;
2892 current_kboard
= kb
;
2893 /* This is going to exit from read_char
2894 so we had better get rid of this frame's stuff. */
2896 longjmp (wrong_kboard_jmpbuf
, 1);
2901 /* Terminate Emacs in batch mode if at eof. */
2902 if (noninteractive
&& INTEGERP (c
) && XINT (c
) < 0)
2903 Fkill_emacs (make_number (1));
2907 /* Add in any extra modifiers, where appropriate. */
2908 if ((extra_keyboard_modifiers
& CHAR_CTL
)
2909 || ((extra_keyboard_modifiers
& 0177) < ' '
2910 && (extra_keyboard_modifiers
& 0177) != 0))
2911 XSETINT (c
, make_ctrl_char (XINT (c
)));
2913 /* Transfer any other modifier bits directly from
2914 extra_keyboard_modifiers to c. Ignore the actual character code
2915 in the low 16 bits of extra_keyboard_modifiers. */
2916 XSETINT (c
, XINT (c
) | (extra_keyboard_modifiers
& ~0xff7f & ~CHAR_CTL
));
2926 if (commandflag
>= 0
2927 && !input_pending
&& !detect_input_pending_run_timers (0))
2935 /* Buffer switch events are only for internal wakeups
2936 so don't show them to the user.
2937 Also, don't record a key if we already did. */
2938 if (BUFFERP (c
) || key_already_recorded
)
2941 /* Process special events within read_char
2942 and loop around to read another event. */
2945 tem
= access_keymap (get_keymap (Vspecial_event_map
, 0, 1), c
, 0, 0, 1);
2950 int was_locked
= single_kboard
;
2952 last_input_char
= c
;
2953 Fcommand_execute (tem
, Qnil
, Fvector (1, &last_input_char
), Qt
);
2955 if (CONSP (c
) && EQ (XCAR (c
), Qselect_window
))
2956 /* We stopped being idle for this event; undo that. This
2957 prevents automatic window selection (under
2958 mouse_autoselect_window from acting as a real input event, for
2959 example banishing the mouse under mouse-avoidance-mode. */
2960 timer_resume_idle ();
2962 /* Resume allowing input from any kboard, if that was true before. */
2964 any_kboard_state ();
2969 /* Handle things that only apply to characters. */
2972 /* If kbd_buffer_get_event gave us an EOF, return that. */
2976 if ((STRINGP (Vkeyboard_translate_table
)
2977 && SCHARS (Vkeyboard_translate_table
) > (unsigned) XFASTINT (c
))
2978 || (VECTORP (Vkeyboard_translate_table
)
2979 && XVECTOR (Vkeyboard_translate_table
)->size
> (unsigned) XFASTINT (c
))
2980 || (CHAR_TABLE_P (Vkeyboard_translate_table
)
2981 && CHAR_VALID_P (XINT (c
), 0)))
2984 d
= Faref (Vkeyboard_translate_table
, c
);
2985 /* nil in keyboard-translate-table means no translation. */
2991 /* If this event is a mouse click in the menu bar,
2992 return just menu-bar for now. Modify the mouse click event
2993 so we won't do this twice, then queue it up. */
2994 if (EVENT_HAS_PARAMETERS (c
)
2996 && CONSP (EVENT_START (c
))
2997 && CONSP (XCDR (EVENT_START (c
))))
3001 posn
= POSN_POSN (EVENT_START (c
));
3002 /* Handle menu-bar events:
3003 insert the dummy prefix event `menu-bar'. */
3004 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
3006 /* Change menu-bar to (menu-bar) as the event "position". */
3007 POSN_SET_POSN (EVENT_START (c
), Fcons (posn
, Qnil
));
3010 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
3015 /* Store these characters into recent_keys, the dribble file if any,
3016 and the keyboard macro being defined, if any. */
3018 if (! NILP (also_record
))
3019 record_char (also_record
);
3021 /* Wipe the echo area.
3022 But first, if we are about to use an input method,
3023 save the echo area contents for it to refer to. */
3025 && ! NILP (Vinput_method_function
)
3026 && (unsigned) XINT (c
) >= ' '
3027 && (unsigned) XINT (c
) != 127
3028 && (unsigned) XINT (c
) < 256)
3030 previous_echo_area_message
= Fcurrent_message ();
3031 Vinput_method_previous_message
= previous_echo_area_message
;
3034 /* Now wipe the echo area, except for help events which do their
3035 own stuff with the echo area. */
3037 || (!(EQ (Qhelp_echo
, XCAR (c
)))
3038 && !(EQ (Qswitch_frame
, XCAR (c
)))))
3040 if (!NILP (echo_area_buffer
[0]))
3041 safe_run_hooks (Qecho_area_clear_hook
);
3042 clear_message (1, 0);
3045 reread_for_input_method
:
3047 /* Pass this to the input method, if appropriate. */
3049 && ! NILP (Vinput_method_function
)
3050 /* Don't run the input method within a key sequence,
3051 after the first event of the key sequence. */
3052 && NILP (prev_event
)
3053 && (unsigned) XINT (c
) >= ' '
3054 && (unsigned) XINT (c
) != 127
3055 && (unsigned) XINT (c
) < 256)
3058 int key_count
, key_count_reset
;
3059 struct gcpro gcpro1
;
3060 int count
= SPECPDL_INDEX ();
3062 /* Save the echo status. */
3063 int saved_immediate_echo
= current_kboard
->immediate_echo
;
3064 struct kboard
*saved_ok_to_echo
= ok_to_echo_at_next_pause
;
3065 Lisp_Object saved_echo_string
= current_kboard
->echo_string
;
3066 int saved_echo_after_prompt
= current_kboard
->echo_after_prompt
;
3069 if (before_command_restore_flag
)
3071 this_command_key_count
= before_command_key_count_1
;
3072 if (this_command_key_count
< this_single_command_key_start
)
3073 this_single_command_key_start
= this_command_key_count
;
3074 echo_truncate (before_command_echo_length_1
);
3075 before_command_restore_flag
= 0;
3079 /* Save the this_command_keys status. */
3080 key_count
= this_command_key_count
;
3081 key_count_reset
= this_command_key_count_reset
;
3084 keys
= Fcopy_sequence (this_command_keys
);
3089 /* Clear out this_command_keys. */
3090 this_command_key_count
= 0;
3091 this_command_key_count_reset
= 0;
3093 /* Now wipe the echo area. */
3094 if (!NILP (echo_area_buffer
[0]))
3095 safe_run_hooks (Qecho_area_clear_hook
);
3096 clear_message (1, 0);
3099 /* If we are not reading a key sequence,
3100 never use the echo area. */
3103 specbind (Qinput_method_use_echo_area
, Qt
);
3106 /* Call the input method. */
3107 tem
= call1 (Vinput_method_function
, c
);
3109 tem
= unbind_to (count
, tem
);
3111 /* Restore the saved echoing state
3112 and this_command_keys state. */
3113 this_command_key_count
= key_count
;
3114 this_command_key_count_reset
= key_count_reset
;
3116 this_command_keys
= keys
;
3119 ok_to_echo_at_next_pause
= saved_ok_to_echo
;
3120 current_kboard
->echo_string
= saved_echo_string
;
3121 current_kboard
->echo_after_prompt
= saved_echo_after_prompt
;
3122 if (saved_immediate_echo
)
3127 /* The input method can return no events. */
3130 /* Bring back the previous message, if any. */
3131 if (! NILP (previous_echo_area_message
))
3132 message_with_string ("%s", previous_echo_area_message
, 0);
3135 /* It returned one event or more. */
3137 Vunread_post_input_method_events
3138 = nconc2 (XCDR (tem
), Vunread_post_input_method_events
);
3143 /* Display help if not echoing. */
3144 if (CONSP (c
) && EQ (XCAR (c
), Qhelp_echo
))
3146 /* (help-echo FRAME HELP WINDOW OBJECT POS). */
3147 Lisp_Object help
, object
, position
, window
, tem
;
3149 tem
= Fcdr (XCDR (c
));
3152 window
= Fcar (tem
);
3154 object
= Fcar (tem
);
3156 position
= Fcar (tem
);
3158 show_help_echo (help
, window
, object
, position
, 0);
3160 /* We stopped being idle for this event; undo that. */
3161 timer_resume_idle ();
3165 if (! reread
|| this_command_key_count
== 0
3166 || this_command_key_count_reset
)
3169 /* Don't echo mouse motion events. */
3170 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3171 && NILP (Fzerop (Vecho_keystrokes
))
3172 && ! (EVENT_HAS_PARAMETERS (c
)
3173 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
3176 if (! NILP (also_record
))
3177 echo_char (also_record
);
3178 /* Once we reread a character, echoing can happen
3179 the next time we pause to read a new one. */
3180 ok_to_echo_at_next_pause
= current_kboard
;
3183 /* Record this character as part of the current key. */
3184 add_command_key (c
);
3185 if (! NILP (also_record
))
3186 add_command_key (also_record
);
3189 last_input_char
= c
;
3192 /* Process the help character specially if enabled */
3193 if (!NILP (Vhelp_form
) && help_char_p (c
))
3196 count
= SPECPDL_INDEX ();
3198 record_unwind_protect (Fset_window_configuration
,
3199 Fcurrent_window_configuration (Qnil
));
3201 tem0
= Feval (Vhelp_form
);
3203 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
3207 c
= read_char (0, 0, 0, Qnil
, 0);
3208 while (BUFFERP (c
));
3209 /* Remove the help from the frame */
3210 unbind_to (count
, Qnil
);
3213 if (EQ (c
, make_number (040)))
3217 c
= read_char (0, 0, 0, Qnil
, 0);
3218 while (BUFFERP (c
));
3227 /* Record a key that came from a mouse menu.
3228 Record it for echoing, for this-command-keys, and so on. */
3234 /* Wipe the echo area. */
3235 clear_message (1, 0);
3240 before_command_key_count
= this_command_key_count
;
3241 before_command_echo_length
= echo_length ();
3244 /* Don't echo mouse motion events. */
3245 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
3246 && NILP (Fzerop (Vecho_keystrokes
)))
3250 /* Once we reread a character, echoing can happen
3251 the next time we pause to read a new one. */
3252 ok_to_echo_at_next_pause
= 0;
3255 /* Record this character as part of the current key. */
3256 add_command_key (c
);
3258 /* Re-reading in the middle of a command */
3259 last_input_char
= c
;
3263 /* Return 1 if should recognize C as "the help character". */
3271 if (EQ (c
, Vhelp_char
))
3273 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCDR (tail
))
3274 if (EQ (c
, XCAR (tail
)))
3279 /* Record the input event C in various ways. */
3287 if (CONSP (c
) && (EQ (XCAR (c
), Qhelp_echo
) || EQ (XCAR (c
), Qmouse_movement
)))
3289 /* To avoid filling recent_keys with help-echo and mouse-movement
3290 events, we filter out repeated help-echo events, only store the
3291 first and last in a series of mouse-movement events, and don't
3292 store repeated help-echo events which are only separated by
3293 mouse-movement events. */
3295 Lisp_Object ev1
, ev2
, ev3
;
3298 if ((ix1
= recent_keys_index
- 1) < 0)
3299 ix1
= NUM_RECENT_KEYS
- 1;
3300 ev1
= AREF (recent_keys
, ix1
);
3302 if ((ix2
= ix1
- 1) < 0)
3303 ix2
= NUM_RECENT_KEYS
- 1;
3304 ev2
= AREF (recent_keys
, ix2
);
3306 if ((ix3
= ix2
- 1) < 0)
3307 ix3
= NUM_RECENT_KEYS
- 1;
3308 ev3
= AREF (recent_keys
, ix3
);
3310 if (EQ (XCAR (c
), Qhelp_echo
))
3312 /* Don't record `help-echo' in recent_keys unless it shows some help
3313 message, and a different help than the previously recorded
3315 Lisp_Object help
, last_help
;
3317 help
= Fcar_safe (Fcdr_safe (XCDR (c
)));
3318 if (!STRINGP (help
))
3320 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qhelp_echo
)
3321 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev1
))), EQ (last_help
, help
)))
3323 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3324 && CONSP (ev2
) && EQ (XCAR (ev2
), Qhelp_echo
)
3325 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev2
))), EQ (last_help
, help
)))
3327 else if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3328 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3329 && CONSP (ev3
) && EQ (XCAR (ev3
), Qhelp_echo
)
3330 && (last_help
= Fcar_safe (Fcdr_safe (XCDR (ev3
))), EQ (last_help
, help
)))
3333 else if (EQ (XCAR (c
), Qmouse_movement
))
3335 /* Only record one pair of `mouse-movement' on a window in recent_keys.
3336 So additional mouse movement events replace the last element. */
3337 Lisp_Object last_window
, window
;
3339 window
= Fcar_safe (Fcar_safe (XCDR (c
)));
3340 if (CONSP (ev1
) && EQ (XCAR (ev1
), Qmouse_movement
)
3341 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev1
))), EQ (last_window
, window
))
3342 && CONSP (ev2
) && EQ (XCAR (ev2
), Qmouse_movement
)
3343 && (last_window
= Fcar_safe (Fcar_safe (XCDR (ev2
))), EQ (last_window
, window
)))
3345 ASET (recent_keys
, ix1
, c
);
3351 store_kbd_macro_char (c
);
3356 ASET (recent_keys
, recent_keys_index
, c
);
3357 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
3358 recent_keys_index
= 0;
3360 else if (recorded
< 0)
3362 /* We need to remove one or two events from recent_keys.
3363 To do this, we simply put nil at those events and move the
3364 recent_keys_index backwards over those events. Usually,
3365 users will never see those nil events, as they will be
3366 overwritten by the command keys entered to see recent_keys
3369 while (recorded
++ < 0 && total_keys
> 0)
3371 if (total_keys
< NUM_RECENT_KEYS
)
3373 if (--recent_keys_index
< 0)
3374 recent_keys_index
= NUM_RECENT_KEYS
- 1;
3375 ASET (recent_keys
, recent_keys_index
, Qnil
);
3379 num_nonmacro_input_events
++;
3381 /* Write c to the dribble file. If c is a lispy event, write
3382 the event's symbol to the dribble file, in <brackets>. Bleaugh.
3383 If you, dear reader, have a better idea, you've got the source. :-) */
3388 if (XUINT (c
) < 0x100)
3389 putc (XINT (c
), dribble
);
3391 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
3395 Lisp_Object dribblee
;
3397 /* If it's a structured event, take the event header. */
3398 dribblee
= EVENT_HEAD (c
);
3400 if (SYMBOLP (dribblee
))
3402 putc ('<', dribble
);
3403 fwrite (SDATA (SYMBOL_NAME (dribblee
)), sizeof (char),
3404 SBYTES (SYMBOL_NAME (dribblee
)),
3406 putc ('>', dribble
);
3418 struct buffer
*old
= current_buffer
;
3419 Fprinc (object
, Qnil
);
3420 set_buffer_internal (XBUFFER (Vstandard_output
));
3421 call0 (intern ("help-mode"));
3422 set_buffer_internal (old
);
3426 /* Copy out or in the info on where C-g should throw to.
3427 This is used when running Lisp code from within get_char,
3428 in case get_char is called recursively.
3429 See read_process_output. */
3435 bcopy (getcjmp
, temp
, sizeof getcjmp
);
3439 restore_getcjmp (temp
)
3442 bcopy (temp
, getcjmp
, sizeof getcjmp
);
3447 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
3448 of this function. */
3451 tracking_off (old_value
)
3452 Lisp_Object old_value
;
3454 do_mouse_tracking
= old_value
;
3455 if (NILP (old_value
))
3457 /* Redisplay may have been preempted because there was input
3458 available, and it assumes it will be called again after the
3459 input has been processed. If the only input available was
3460 the sort that we have just disabled, then we need to call
3462 if (!readable_events (READABLE_EVENTS_DO_TIMERS_NOW
))
3464 redisplay_preserve_echo_area (6);
3465 get_input_pending (&input_pending
,
3466 READABLE_EVENTS_DO_TIMERS_NOW
);
3472 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
3473 doc
: /* Evaluate BODY with mouse movement events enabled.
3474 Within a `track-mouse' form, mouse motion generates input events that
3475 you can read with `read-event'.
3476 Normally, mouse motion is ignored.
3477 usage: (track-mouse BODY ...) */)
3481 int count
= SPECPDL_INDEX ();
3484 record_unwind_protect (tracking_off
, do_mouse_tracking
);
3486 do_mouse_tracking
= Qt
;
3488 val
= Fprogn (args
);
3489 return unbind_to (count
, val
);
3492 /* If mouse has moved on some frame, return one of those frames.
3493 Return 0 otherwise. */
3498 Lisp_Object tail
, frame
;
3500 FOR_EACH_FRAME (tail
, frame
)
3502 if (XFRAME (frame
)->mouse_moved
)
3503 return XFRAME (frame
);
3509 #endif /* HAVE_MOUSE */
3511 /* Low level keyboard/mouse input.
3512 kbd_buffer_store_event places events in kbd_buffer, and
3513 kbd_buffer_get_event retrieves them. */
3515 /* Return true iff there are any events in the queue that read-char
3516 would return. If this returns false, a read-char would block. */
3518 readable_events (flags
)
3521 if (flags
& READABLE_EVENTS_DO_TIMERS_NOW
)
3524 /* If the buffer contains only FOCUS_IN_EVENT events, and
3525 READABLE_EVENTS_FILTER_EVENTS is set, report it as empty. */
3526 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3528 int have_live_event
= 1;
3530 if (flags
& READABLE_EVENTS_FILTER_EVENTS
)
3532 struct input_event
*event
;
3534 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3538 while (have_live_event
&& event
->kind
== FOCUS_IN_EVENT
)
3541 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3543 if (event
== kbd_store_ptr
)
3544 have_live_event
= 0;
3547 if (have_live_event
) return 1;
3551 if (!(flags
& READABLE_EVENTS_IGNORE_SQUEEZABLES
)
3552 && !NILP (do_mouse_tracking
) && some_mouse_moved ())
3557 if (current_kboard
->kbd_queue_has_data
)
3563 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
3564 if (kb
->kbd_queue_has_data
)
3570 /* Set this for debugging, to have a way to get out */
3575 event_to_kboard (event
)
3576 struct input_event
*event
;
3579 frame
= event
->frame_or_window
;
3581 frame
= XCAR (frame
);
3582 else if (WINDOWP (frame
))
3583 frame
= WINDOW_FRAME (XWINDOW (frame
));
3585 /* There are still some events that don't set this field.
3586 For now, just ignore the problem.
3587 Also ignore dead frames here. */
3588 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
3591 return FRAME_KBOARD (XFRAME (frame
));
3596 Lisp_Object Vthrow_on_input
;
3598 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
3601 kbd_buffer_store_event (event
)
3602 register struct input_event
*event
;
3604 kbd_buffer_store_event_hold (event
, 0);
3607 /* Store EVENT obtained at interrupt level into kbd_buffer, fifo.
3609 If HOLD_QUIT is 0, just stuff EVENT into the fifo.
3610 Else, if HOLD_QUIT.kind != NO_EVENT, discard EVENT.
3611 Else, if EVENT is a quit event, store the quit event
3612 in HOLD_QUIT, and return (thus ignoring further events).
3614 This is used in read_avail_input to postpone the processing
3615 of the quit event until all subsequent input events have been
3616 parsed (and discarded).
3620 kbd_buffer_store_event_hold (event
, hold_quit
)
3621 register struct input_event
*event
;
3622 struct input_event
*hold_quit
;
3624 if (event
->kind
== NO_EVENT
)
3627 if (hold_quit
&& hold_quit
->kind
!= NO_EVENT
)
3630 if (event
->kind
== ASCII_KEYSTROKE_EVENT
)
3632 register int c
= event
->code
& 0377;
3634 if (event
->modifiers
& ctrl_modifier
)
3635 c
= make_ctrl_char (c
);
3637 c
|= (event
->modifiers
3638 & (meta_modifier
| alt_modifier
3639 | hyper_modifier
| super_modifier
));
3645 struct input_event
*sp
;
3648 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
3649 kb
!= current_kboard
))
3652 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
3653 Fcons (make_number (c
), Qnil
));
3654 kb
->kbd_queue_has_data
= 1;
3655 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3657 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3660 if (event_to_kboard (sp
) == kb
)
3662 sp
->kind
= NO_EVENT
;
3663 sp
->frame_or_window
= Qnil
;
3673 bcopy (event
, (char *) hold_quit
, sizeof (*event
));
3677 /* If this results in a quit_char being returned to Emacs as
3678 input, set Vlast_event_frame properly. If this doesn't
3679 get returned to Emacs as an event, the next event read
3680 will set Vlast_event_frame again, so this is safe to do. */
3684 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
3686 focus
= event
->frame_or_window
;
3687 internal_last_event_frame
= focus
;
3688 Vlast_event_frame
= focus
;
3691 last_event_timestamp
= event
->timestamp
;
3692 handle_interrupt ();
3696 if (c
&& c
== stop_character
)
3702 /* Don't insert two BUFFER_SWITCH_EVENT's in a row.
3703 Just ignore the second one. */
3704 else if (event
->kind
== BUFFER_SWITCH_EVENT
3705 && kbd_fetch_ptr
!= kbd_store_ptr
3706 && ((kbd_store_ptr
== kbd_buffer
3707 ? kbd_buffer
+ KBD_BUFFER_SIZE
- 1
3708 : kbd_store_ptr
- 1)->kind
) == BUFFER_SWITCH_EVENT
)
3711 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
3712 kbd_store_ptr
= kbd_buffer
;
3714 /* Don't let the very last slot in the buffer become full,
3715 since that would make the two pointers equal,
3716 and that is indistinguishable from an empty buffer.
3717 Discard the event if it would fill the last slot. */
3718 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3720 *kbd_store_ptr
= *event
;
3724 /* If we're inside while-no-input, and this event qualifies
3725 as input, set quit-flag to cause an interrupt. */
3726 if (!NILP (Vthrow_on_input
)
3727 && event
->kind
!= FOCUS_IN_EVENT
3728 && event
->kind
!= HELP_EVENT
3729 && event
->kind
!= DEICONIFY_EVENT
)
3731 Vquit_flag
= Vthrow_on_input
;
3732 /* If we're inside a function that wants immediate quits,
3734 if (immediate_quit
&& NILP (Vinhibit_quit
))
3744 /* Put an input event back in the head of the event queue. */
3747 kbd_buffer_unget_event (event
)
3748 register struct input_event
*event
;
3750 if (kbd_fetch_ptr
== kbd_buffer
)
3751 kbd_fetch_ptr
= kbd_buffer
+ KBD_BUFFER_SIZE
;
3753 /* Don't let the very last slot in the buffer become full, */
3754 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
3757 *kbd_fetch_ptr
= *event
;
3762 /* Generate HELP_EVENT input_events in BUFP which has room for
3763 SIZE events. If there's not enough room in BUFP, ignore this
3766 HELP is the help form.
3768 FRAME is the frame on which the help is generated. OBJECT is the
3769 Lisp object where the help was found (a buffer, a string, an
3770 overlay, or nil if neither from a string nor from a buffer. POS is
3771 the position within OBJECT where the help was found.
3773 Value is the number of input_events generated. */
3776 gen_help_event (help
, frame
, window
, object
, pos
)
3777 Lisp_Object help
, frame
, object
, window
;
3780 struct input_event event
;
3784 event
.kind
= HELP_EVENT
;
3785 event
.frame_or_window
= frame
;
3787 event
.x
= WINDOWP (window
) ? window
: frame
;
3790 kbd_buffer_store_event (&event
);
3794 /* Store HELP_EVENTs for HELP on FRAME in the input queue. */
3797 kbd_buffer_store_help_event (frame
, help
)
3798 Lisp_Object frame
, help
;
3800 struct input_event event
;
3802 event
.kind
= HELP_EVENT
;
3803 event
.frame_or_window
= frame
;
3808 kbd_buffer_store_event (&event
);
3812 /* Discard any mouse events in the event buffer by setting them to
3815 discard_mouse_events ()
3817 struct input_event
*sp
;
3818 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
3820 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3823 if (sp
->kind
== MOUSE_CLICK_EVENT
3824 || sp
->kind
== WHEEL_EVENT
3826 || sp
->kind
== W32_SCROLL_BAR_CLICK_EVENT
3828 || sp
->kind
== SCROLL_BAR_CLICK_EVENT
)
3830 sp
->kind
= NO_EVENT
;
3836 /* Return non-zero if there are any real events waiting in the event
3837 buffer, not counting `NO_EVENT's.
3839 If DISCARD is non-zero, discard NO_EVENT events at the front of
3840 the input queue, possibly leaving the input queue empty if there
3841 are no real input events. */
3844 kbd_buffer_events_waiting (discard
)
3847 struct input_event
*sp
;
3849 for (sp
= kbd_fetch_ptr
;
3850 sp
!= kbd_store_ptr
&& sp
->kind
== NO_EVENT
;
3853 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
3860 return sp
!= kbd_store_ptr
&& sp
->kind
!= NO_EVENT
;
3864 /* Clear input event EVENT. */
3868 struct input_event
*event
;
3870 event
->kind
= NO_EVENT
;
3874 /* Read one event from the event buffer, waiting if necessary.
3875 The value is a Lisp object representing the event.
3876 The value is nil for an event that should be ignored,
3877 or that was handled here.
3878 We always read and discard one event. */
3881 kbd_buffer_get_event (kbp
, used_mouse_menu
)
3883 int *used_mouse_menu
;
3892 *kbp
= current_kboard
;
3896 /* Wait until there is input available. */
3899 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3902 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3906 /* If the quit flag is set, then read_char will return
3907 quit_char, so that counts as "available input." */
3908 if (!NILP (Vquit_flag
))
3909 quit_throw_to_read_char ();
3911 /* One way or another, wait until input is available; then, if
3912 interrupt handlers have not read it, read it now. */
3915 wait_for_kbd_input ();
3917 /* Note SIGIO has been undef'd if FIONREAD is missing. */
3921 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3924 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
3928 wait_reading_process_output (0, 0, -1, 1, Qnil
, NULL
, 0);
3930 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
3931 /* Pass 1 for EXPECT since we just waited to have input. */
3932 read_avail_input (1);
3934 #endif /* not VMS */
3937 if (CONSP (Vunread_command_events
))
3940 first
= XCAR (Vunread_command_events
);
3941 Vunread_command_events
= XCDR (Vunread_command_events
);
3942 *kbp
= current_kboard
;
3946 /* At this point, we know that there is a readable event available
3947 somewhere. If the event queue is empty, then there must be a
3948 mouse movement enabled and available. */
3949 if (kbd_fetch_ptr
!= kbd_store_ptr
)
3951 struct input_event
*event
;
3953 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
3957 last_event_timestamp
= event
->timestamp
;
3960 *kbp
= event_to_kboard (event
);
3962 *kbp
= current_kboard
; /* Better than returning null ptr? */
3964 *kbp
= &the_only_kboard
;
3969 /* These two kinds of events get special handling
3970 and don't actually appear to the command loop.
3971 We return nil for them. */
3972 if (event
->kind
== SELECTION_REQUEST_EVENT
3973 || event
->kind
== SELECTION_CLEAR_EVENT
)
3976 struct input_event copy
;
3978 /* Remove it from the buffer before processing it,
3979 since otherwise swallow_events will see it
3980 and process it again. */
3982 kbd_fetch_ptr
= event
+ 1;
3983 input_pending
= readable_events (0);
3984 x_handle_selection_event (©
);
3986 /* We're getting selection request events, but we don't have
3992 #if defined (HAVE_X11) || defined (HAVE_NTGUI) || defined (MAC_OS)
3993 else if (event
->kind
== DELETE_WINDOW_EVENT
)
3995 /* Make an event (delete-frame (FRAME)). */
3996 obj
= Fcons (event
->frame_or_window
, Qnil
);
3997 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
3998 kbd_fetch_ptr
= event
+ 1;
4001 #if defined (HAVE_X11) || defined (HAVE_NTGUI)
4002 else if (event
->kind
== ICONIFY_EVENT
)
4004 /* Make an event (iconify-frame (FRAME)). */
4005 obj
= Fcons (event
->frame_or_window
, Qnil
);
4006 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
4007 kbd_fetch_ptr
= event
+ 1;
4009 else if (event
->kind
== DEICONIFY_EVENT
)
4011 /* Make an event (make-frame-visible (FRAME)). */
4012 obj
= Fcons (event
->frame_or_window
, Qnil
);
4013 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
4014 kbd_fetch_ptr
= event
+ 1;
4017 else if (event
->kind
== BUFFER_SWITCH_EVENT
)
4019 /* The value doesn't matter here; only the type is tested. */
4020 XSETBUFFER (obj
, current_buffer
);
4021 kbd_fetch_ptr
= event
+ 1;
4023 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
4024 || defined (USE_GTK)
4025 else if (event
->kind
== MENU_BAR_ACTIVATE_EVENT
)
4027 kbd_fetch_ptr
= event
+ 1;
4028 input_pending
= readable_events (0);
4029 if (FRAME_LIVE_P (XFRAME (event
->frame_or_window
)))
4030 x_activate_menubar (XFRAME (event
->frame_or_window
));
4033 #if defined (WINDOWSNT) || defined (MAC_OS)
4034 else if (event
->kind
== LANGUAGE_CHANGE_EVENT
)
4037 /* Make an event (language-change (KEY_SCRIPT)). */
4038 obj
= Fcons (make_number (event
->code
), Qnil
);
4040 /* Make an event (language-change (FRAME CHARSET LCID)). */
4041 obj
= Fcons (event
->frame_or_window
, Qnil
);
4043 obj
= Fcons (Qlanguage_change
, Fcons (obj
, Qnil
));
4044 kbd_fetch_ptr
= event
+ 1;
4047 else if (event
->kind
== SAVE_SESSION_EVENT
)
4049 obj
= Fcons (Qsave_session
, Qnil
);
4050 kbd_fetch_ptr
= event
+ 1;
4052 /* Just discard these, by returning nil.
4053 With MULTI_KBOARD, these events are used as placeholders
4054 when we need to randomly delete events from the queue.
4055 (They shouldn't otherwise be found in the buffer,
4056 but on some machines it appears they do show up
4057 even without MULTI_KBOARD.) */
4058 /* On Windows NT/9X, NO_EVENT is used to delete extraneous
4059 mouse events during a popup-menu call. */
4060 else if (event
->kind
== NO_EVENT
)
4061 kbd_fetch_ptr
= event
+ 1;
4062 else if (event
->kind
== HELP_EVENT
)
4064 Lisp_Object object
, position
, help
, frame
, window
;
4066 frame
= event
->frame_or_window
;
4067 object
= event
->arg
;
4068 position
= make_number (event
->code
);
4071 clear_event (event
);
4073 kbd_fetch_ptr
= event
+ 1;
4074 if (!WINDOWP (window
))
4076 obj
= Fcons (Qhelp_echo
,
4077 list5 (frame
, help
, window
, object
, position
));
4079 else if (event
->kind
== FOCUS_IN_EVENT
)
4081 /* Notification of a FocusIn event. The frame receiving the
4082 focus is in event->frame_or_window. Generate a
4083 switch-frame event if necessary. */
4084 Lisp_Object frame
, focus
;
4086 frame
= event
->frame_or_window
;
4087 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4091 if (!EQ (frame
, internal_last_event_frame
)
4092 && !EQ (frame
, selected_frame
))
4093 obj
= make_lispy_switch_frame (frame
);
4094 internal_last_event_frame
= frame
;
4095 kbd_fetch_ptr
= event
+ 1;
4099 /* If this event is on a different frame, return a switch-frame this
4100 time, and leave the event in the queue for next time. */
4104 frame
= event
->frame_or_window
;
4106 frame
= XCAR (frame
);
4107 else if (WINDOWP (frame
))
4108 frame
= WINDOW_FRAME (XWINDOW (frame
));
4110 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
4114 if (! EQ (frame
, internal_last_event_frame
)
4115 && !EQ (frame
, selected_frame
))
4116 obj
= make_lispy_switch_frame (frame
);
4117 internal_last_event_frame
= frame
;
4119 /* If we didn't decide to make a switch-frame event, go ahead
4120 and build a real event from the queue entry. */
4124 obj
= make_lispy_event (event
);
4126 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined(MAC_OS) \
4127 || defined (USE_GTK)
4128 /* If this was a menu selection, then set the flag to inhibit
4129 writing to last_nonmenu_event. Don't do this if the event
4130 we're returning is (menu-bar), though; that indicates the
4131 beginning of the menu sequence, and we might as well leave
4132 that as the `event with parameters' for this selection. */
4134 && !EQ (event
->frame_or_window
, event
->arg
)
4135 && (event
->kind
== MENU_BAR_EVENT
4136 || event
->kind
== TOOL_BAR_EVENT
))
4137 *used_mouse_menu
= 1;
4140 /* Wipe out this event, to catch bugs. */
4141 clear_event (event
);
4142 kbd_fetch_ptr
= event
+ 1;
4147 /* Try generating a mouse motion event. */
4148 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
4150 FRAME_PTR f
= some_mouse_moved ();
4151 Lisp_Object bar_window
;
4152 enum scroll_bar_part part
;
4156 *kbp
= current_kboard
;
4157 /* Note that this uses F to determine which display to look at.
4158 If there is no valid info, it does not store anything
4159 so x remains nil. */
4162 /* XXX Can f or mouse_position_hook be NULL here? */
4163 if (f
&& FRAME_DISPLAY (f
)->mouse_position_hook
)
4164 (*FRAME_DISPLAY (f
)->mouse_position_hook
) (&f
, 0, &bar_window
,
4165 &part
, &x
, &y
, &time
);
4169 /* Decide if we should generate a switch-frame event. Don't
4170 generate switch-frame events for motion outside of all Emacs
4176 frame
= FRAME_FOCUS_FRAME (f
);
4178 XSETFRAME (frame
, f
);
4180 if (! EQ (frame
, internal_last_event_frame
)
4181 && !EQ (frame
, selected_frame
))
4182 obj
= make_lispy_switch_frame (frame
);
4183 internal_last_event_frame
= frame
;
4186 /* If we didn't decide to make a switch-frame event, go ahead and
4187 return a mouse-motion event. */
4188 if (!NILP (x
) && NILP (obj
))
4189 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
4191 #endif /* HAVE_MOUSE */
4193 /* We were promised by the above while loop that there was
4194 something for us to read! */
4197 input_pending
= readable_events (0);
4199 Vlast_event_frame
= internal_last_event_frame
;
4204 /* Process any events that are not user-visible,
4205 then return, without reading any user-visible events. */
4208 swallow_events (do_display
)
4213 while (kbd_fetch_ptr
!= kbd_store_ptr
)
4215 struct input_event
*event
;
4217 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
4221 last_event_timestamp
= event
->timestamp
;
4223 /* These two kinds of events get special handling
4224 and don't actually appear to the command loop. */
4225 if (event
->kind
== SELECTION_REQUEST_EVENT
4226 || event
->kind
== SELECTION_CLEAR_EVENT
)
4229 struct input_event copy
;
4231 /* Remove it from the buffer before processing it,
4232 since otherwise swallow_events called recursively could see it
4233 and process it again. */
4235 kbd_fetch_ptr
= event
+ 1;
4236 input_pending
= readable_events (0);
4237 x_handle_selection_event (©
);
4239 /* We're getting selection request events, but we don't have
4248 old_timers_run
= timers_run
;
4249 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
4251 if (timers_run
!= old_timers_run
&& do_display
)
4252 redisplay_preserve_echo_area (7);
4255 /* Record the start of when Emacs is idle,
4256 for the sake of running idle-time timers. */
4263 /* If we are already in the idle state, do nothing. */
4264 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4267 EMACS_GET_TIME (timer_idleness_start_time
);
4269 timer_last_idleness_start_time
= timer_idleness_start_time
;
4271 /* Mark all idle-time timers as once again candidates for running. */
4272 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCDR (timers
))
4276 timer
= XCAR (timers
);
4278 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4280 XVECTOR (timer
)->contents
[0] = Qnil
;
4284 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
4289 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
4292 /* Resume idle timer from last idle start time. */
4295 timer_resume_idle ()
4297 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4300 timer_idleness_start_time
= timer_last_idleness_start_time
;
4303 /* This is only for debugging. */
4304 struct input_event last_timer_event
;
4306 /* Check whether a timer has fired. To prevent larger problems we simply
4307 disregard elements that are not proper timers. Do not make a circular
4308 timer list for the time being.
4310 Returns the number of seconds to wait until the next timer fires. If a
4311 timer is triggering now, return zero seconds.
4312 If no timer is active, return -1 seconds.
4314 If a timer is ripe, we run it, with quitting turned off.
4316 DO_IT_NOW is now ignored. It used to mean that we should
4317 run the timer directly instead of queueing a timer-event.
4318 Now we always run timers directly. */
4321 timer_check (do_it_now
)
4324 EMACS_TIME nexttime
;
4325 EMACS_TIME now
, idleness_now
;
4326 Lisp_Object timers
, idle_timers
, chosen_timer
;
4327 struct gcpro gcpro1
, gcpro2
, gcpro3
;
4329 EMACS_SET_SECS (nexttime
, -1);
4330 EMACS_SET_USECS (nexttime
, -1);
4332 /* Always consider the ordinary timers. */
4333 timers
= Vtimer_list
;
4334 /* Consider the idle timers only if Emacs is idle. */
4335 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4336 idle_timers
= Vtimer_idle_list
;
4339 chosen_timer
= Qnil
;
4340 GCPRO3 (timers
, idle_timers
, chosen_timer
);
4342 if (CONSP (timers
) || CONSP (idle_timers
))
4344 EMACS_GET_TIME (now
);
4345 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
4346 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
4349 while (CONSP (timers
) || CONSP (idle_timers
))
4351 Lisp_Object
*vector
;
4352 Lisp_Object timer
= Qnil
, idle_timer
= Qnil
;
4353 EMACS_TIME timer_time
, idle_timer_time
;
4354 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
4356 /* Skip past invalid timers and timers already handled. */
4359 timer
= XCAR (timers
);
4360 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4362 timers
= XCDR (timers
);
4365 vector
= XVECTOR (timer
)->contents
;
4367 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4368 || !INTEGERP (vector
[3])
4369 || ! NILP (vector
[0]))
4371 timers
= XCDR (timers
);
4375 if (!NILP (idle_timers
))
4377 timer
= XCAR (idle_timers
);
4378 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
4380 idle_timers
= XCDR (idle_timers
);
4383 vector
= XVECTOR (timer
)->contents
;
4385 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
4386 || !INTEGERP (vector
[3])
4387 || ! NILP (vector
[0]))
4389 idle_timers
= XCDR (idle_timers
);
4394 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
4395 based on the next ordinary timer.
4396 TIMER_DIFFERENCE is the distance in time from NOW to when
4397 this timer becomes ripe (negative if it's already ripe). */
4400 timer
= XCAR (timers
);
4401 vector
= XVECTOR (timer
)->contents
;
4402 EMACS_SET_SECS (timer_time
,
4403 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4404 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
4405 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
4408 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
4409 based on the next idle timer. */
4410 if (!NILP (idle_timers
))
4412 idle_timer
= XCAR (idle_timers
);
4413 vector
= XVECTOR (idle_timer
)->contents
;
4414 EMACS_SET_SECS (idle_timer_time
,
4415 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
4416 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
4417 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
4420 /* Decide which timer is the next timer,
4421 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
4422 Also step down the list where we found that timer. */
4424 if (! NILP (timers
) && ! NILP (idle_timers
))
4427 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
4428 if (EMACS_TIME_NEG_P (temp
))
4430 chosen_timer
= timer
;
4431 timers
= XCDR (timers
);
4432 difference
= timer_difference
;
4436 chosen_timer
= idle_timer
;
4437 idle_timers
= XCDR (idle_timers
);
4438 difference
= idle_timer_difference
;
4441 else if (! NILP (timers
))
4443 chosen_timer
= timer
;
4444 timers
= XCDR (timers
);
4445 difference
= timer_difference
;
4449 chosen_timer
= idle_timer
;
4450 idle_timers
= XCDR (idle_timers
);
4451 difference
= idle_timer_difference
;
4453 vector
= XVECTOR (chosen_timer
)->contents
;
4455 /* If timer is ripe, run it if it hasn't been run. */
4456 if (EMACS_TIME_NEG_P (difference
)
4457 || (EMACS_SECS (difference
) == 0
4458 && EMACS_USECS (difference
) == 0))
4460 if (NILP (vector
[0]))
4462 int was_locked
= single_kboard
;
4463 int count
= SPECPDL_INDEX ();
4464 Lisp_Object old_deactivate_mark
= Vdeactivate_mark
;
4466 /* Mark the timer as triggered to prevent problems if the lisp
4467 code fails to reschedule it right. */
4470 specbind (Qinhibit_quit
, Qt
);
4472 call1 (Qtimer_event_handler
, chosen_timer
);
4473 Vdeactivate_mark
= old_deactivate_mark
;
4475 unbind_to (count
, Qnil
);
4477 /* Resume allowing input from any kboard, if that was true before. */
4479 any_kboard_state ();
4481 /* Since we have handled the event,
4482 we don't need to tell the caller to wake up and do it. */
4486 /* When we encounter a timer that is still waiting,
4487 return the amount of time to wait before it is ripe. */
4494 /* No timers are pending in the future. */
4495 /* Return 0 if we generated an event, and -1 if not. */
4500 /* Caches for modify_event_symbol. */
4501 static Lisp_Object accent_key_syms
;
4502 static Lisp_Object func_key_syms
;
4503 static Lisp_Object mouse_syms
;
4504 static Lisp_Object wheel_syms
;
4505 static Lisp_Object drag_n_drop_syms
;
4507 /* This is a list of keysym codes for special "accent" characters.
4508 It parallels lispy_accent_keys. */
4510 static int lispy_accent_codes
[] =
4512 #ifdef XK_dead_circumflex
4517 #ifdef XK_dead_grave
4522 #ifdef XK_dead_tilde
4527 #ifdef XK_dead_diaeresis
4532 #ifdef XK_dead_macron
4537 #ifdef XK_dead_degree
4542 #ifdef XK_dead_acute
4547 #ifdef XK_dead_cedilla
4552 #ifdef XK_dead_breve
4557 #ifdef XK_dead_ogonek
4562 #ifdef XK_dead_caron
4567 #ifdef XK_dead_doubleacute
4568 XK_dead_doubleacute
,
4572 #ifdef XK_dead_abovedot
4577 #ifdef XK_dead_abovering
4587 #ifdef XK_dead_belowdot
4592 #ifdef XK_dead_voiced_sound
4593 XK_dead_voiced_sound
,
4597 #ifdef XK_dead_semivoiced_sound
4598 XK_dead_semivoiced_sound
,
4614 /* This is a list of Lisp names for special "accent" characters.
4615 It parallels lispy_accent_codes. */
4617 static char *lispy_accent_keys
[] =
4635 "dead-voiced-sound",
4636 "dead-semivoiced-sound",
4642 #define FUNCTION_KEY_OFFSET 0x0
4644 char *lispy_function_keys
[] =
4648 0, /* VK_LBUTTON 0x01 */
4649 0, /* VK_RBUTTON 0x02 */
4650 "cancel", /* VK_CANCEL 0x03 */
4651 0, /* VK_MBUTTON 0x04 */
4653 0, 0, 0, /* 0x05 .. 0x07 */
4655 "backspace", /* VK_BACK 0x08 */
4656 "tab", /* VK_TAB 0x09 */
4658 0, 0, /* 0x0A .. 0x0B */
4660 "clear", /* VK_CLEAR 0x0C */
4661 "return", /* VK_RETURN 0x0D */
4663 0, 0, /* 0x0E .. 0x0F */
4665 0, /* VK_SHIFT 0x10 */
4666 0, /* VK_CONTROL 0x11 */
4667 0, /* VK_MENU 0x12 */
4668 "pause", /* VK_PAUSE 0x13 */
4669 "capslock", /* VK_CAPITAL 0x14 */
4671 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
4673 "escape", /* VK_ESCAPE 0x1B */
4675 0, 0, 0, 0, /* 0x1C .. 0x1F */
4677 0, /* VK_SPACE 0x20 */
4678 "prior", /* VK_PRIOR 0x21 */
4679 "next", /* VK_NEXT 0x22 */
4680 "end", /* VK_END 0x23 */
4681 "home", /* VK_HOME 0x24 */
4682 "left", /* VK_LEFT 0x25 */
4683 "up", /* VK_UP 0x26 */
4684 "right", /* VK_RIGHT 0x27 */
4685 "down", /* VK_DOWN 0x28 */
4686 "select", /* VK_SELECT 0x29 */
4687 "print", /* VK_PRINT 0x2A */
4688 "execute", /* VK_EXECUTE 0x2B */
4689 "snapshot", /* VK_SNAPSHOT 0x2C */
4690 "insert", /* VK_INSERT 0x2D */
4691 "delete", /* VK_DELETE 0x2E */
4692 "help", /* VK_HELP 0x2F */
4694 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
4696 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4698 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
4700 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
4702 0, 0, 0, 0, 0, 0, 0, 0, 0,
4703 0, 0, 0, 0, 0, 0, 0, 0, 0,
4704 0, 0, 0, 0, 0, 0, 0, 0,
4706 "lwindow", /* VK_LWIN 0x5B */
4707 "rwindow", /* VK_RWIN 0x5C */
4708 "apps", /* VK_APPS 0x5D */
4710 0, 0, /* 0x5E .. 0x5F */
4712 "kp-0", /* VK_NUMPAD0 0x60 */
4713 "kp-1", /* VK_NUMPAD1 0x61 */
4714 "kp-2", /* VK_NUMPAD2 0x62 */
4715 "kp-3", /* VK_NUMPAD3 0x63 */
4716 "kp-4", /* VK_NUMPAD4 0x64 */
4717 "kp-5", /* VK_NUMPAD5 0x65 */
4718 "kp-6", /* VK_NUMPAD6 0x66 */
4719 "kp-7", /* VK_NUMPAD7 0x67 */
4720 "kp-8", /* VK_NUMPAD8 0x68 */
4721 "kp-9", /* VK_NUMPAD9 0x69 */
4722 "kp-multiply", /* VK_MULTIPLY 0x6A */
4723 "kp-add", /* VK_ADD 0x6B */
4724 "kp-separator", /* VK_SEPARATOR 0x6C */
4725 "kp-subtract", /* VK_SUBTRACT 0x6D */
4726 "kp-decimal", /* VK_DECIMAL 0x6E */
4727 "kp-divide", /* VK_DIVIDE 0x6F */
4728 "f1", /* VK_F1 0x70 */
4729 "f2", /* VK_F2 0x71 */
4730 "f3", /* VK_F3 0x72 */
4731 "f4", /* VK_F4 0x73 */
4732 "f5", /* VK_F5 0x74 */
4733 "f6", /* VK_F6 0x75 */
4734 "f7", /* VK_F7 0x76 */
4735 "f8", /* VK_F8 0x77 */
4736 "f9", /* VK_F9 0x78 */
4737 "f10", /* VK_F10 0x79 */
4738 "f11", /* VK_F11 0x7A */
4739 "f12", /* VK_F12 0x7B */
4740 "f13", /* VK_F13 0x7C */
4741 "f14", /* VK_F14 0x7D */
4742 "f15", /* VK_F15 0x7E */
4743 "f16", /* VK_F16 0x7F */
4744 "f17", /* VK_F17 0x80 */
4745 "f18", /* VK_F18 0x81 */
4746 "f19", /* VK_F19 0x82 */
4747 "f20", /* VK_F20 0x83 */
4748 "f21", /* VK_F21 0x84 */
4749 "f22", /* VK_F22 0x85 */
4750 "f23", /* VK_F23 0x86 */
4751 "f24", /* VK_F24 0x87 */
4753 0, 0, 0, 0, /* 0x88 .. 0x8B */
4754 0, 0, 0, 0, /* 0x8C .. 0x8F */
4756 "kp-numlock", /* VK_NUMLOCK 0x90 */
4757 "scroll", /* VK_SCROLL 0x91 */
4759 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
4760 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
4761 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
4762 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
4763 "kp-end", /* VK_NUMPAD_END 0x96 */
4764 "kp-home", /* VK_NUMPAD_HOME 0x97 */
4765 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
4766 "kp-up", /* VK_NUMPAD_UP 0x99 */
4767 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
4768 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
4769 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
4770 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
4772 0, 0, /* 0x9E .. 0x9F */
4775 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
4776 * Used only as parameters to GetAsyncKeyState and GetKeyState.
4777 * No other API or message will distinguish left and right keys this way.
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,
4784 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4785 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4791 "attn", /* VK_ATTN 0xF6 */
4792 "crsel", /* VK_CRSEL 0xF7 */
4793 "exsel", /* VK_EXSEL 0xF8 */
4794 "ereof", /* VK_EREOF 0xF9 */
4795 "play", /* VK_PLAY 0xFA */
4796 "zoom", /* VK_ZOOM 0xFB */
4797 "noname", /* VK_NONAME 0xFC */
4798 "pa1", /* VK_PA1 0xFD */
4799 "oem_clear", /* VK_OEM_CLEAR 0xFE */
4803 #else /* not HAVE_NTGUI */
4805 /* This should be dealt with in XTread_socket now, and that doesn't
4806 depend on the client system having the Kana syms defined. See also
4807 the XK_kana_A case below. */
4810 static char *lispy_kana_keys
[] =
4812 /* X Keysym value */
4813 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x400 .. 0x40f */
4814 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x410 .. 0x41f */
4815 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x420 .. 0x42f */
4816 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x430 .. 0x43f */
4817 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x440 .. 0x44f */
4818 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x450 .. 0x45f */
4819 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x460 .. 0x46f */
4820 0,0,0,0,0,0,0,0,0,0,0,0,0,0,"overline",0,
4821 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x480 .. 0x48f */
4822 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x490 .. 0x49f */
4823 0, "kana-fullstop", "kana-openingbracket", "kana-closingbracket",
4824 "kana-comma", "kana-conjunctive", "kana-WO", "kana-a",
4825 "kana-i", "kana-u", "kana-e", "kana-o",
4826 "kana-ya", "kana-yu", "kana-yo", "kana-tsu",
4827 "prolongedsound", "kana-A", "kana-I", "kana-U",
4828 "kana-E", "kana-O", "kana-KA", "kana-KI",
4829 "kana-KU", "kana-KE", "kana-KO", "kana-SA",
4830 "kana-SHI", "kana-SU", "kana-SE", "kana-SO",
4831 "kana-TA", "kana-CHI", "kana-TSU", "kana-TE",
4832 "kana-TO", "kana-NA", "kana-NI", "kana-NU",
4833 "kana-NE", "kana-NO", "kana-HA", "kana-HI",
4834 "kana-FU", "kana-HE", "kana-HO", "kana-MA",
4835 "kana-MI", "kana-MU", "kana-ME", "kana-MO",
4836 "kana-YA", "kana-YU", "kana-YO", "kana-RA",
4837 "kana-RI", "kana-RU", "kana-RE", "kana-RO",
4838 "kana-WA", "kana-N", "voicedsound", "semivoicedsound",
4839 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4e0 .. 0x4ef */
4840 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x4f0 .. 0x4ff */
4842 #endif /* XK_kana_A */
4845 #define FUNCTION_KEY_OFFSET 0xff00
4847 /* You'll notice that this table is arranged to be conveniently
4848 indexed by X Windows keysym values. */
4849 static char *lispy_function_keys
[] =
4851 /* X Keysym value */
4853 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00...0f */
4854 "backspace", "tab", "linefeed", "clear",
4856 0, 0, 0, "pause", /* 0xff10...1f */
4857 0, 0, 0, 0, 0, 0, 0, "escape",
4859 0, "kanji", "muhenkan", "henkan", /* 0xff20...2f */
4860 "romaji", "hiragana", "katakana", "hiragana-katakana",
4861 "zenkaku", "hankaku", "zenkaku-hankaku", "touroku",
4862 "massyo", "kana-lock", "kana-shift", "eisu-shift",
4863 "eisu-toggle", /* 0xff30...3f */
4864 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4865 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
4867 "home", "left", "up", "right", /* 0xff50 */ /* IsCursorKey */
4868 "down", "prior", "next", "end",
4869 "begin", 0, 0, 0, 0, 0, 0, 0,
4870 "select", /* 0xff60 */ /* IsMiscFunctionKey */
4881 "break", /* 0xff6b */
4884 0, 0, 0, 0, "backtab", 0, 0, 0, /* 0xff70... */
4885 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff78... */
4886 "kp-space", /* 0xff80 */ /* IsKeypadKey */
4887 0, 0, 0, 0, 0, 0, 0, 0,
4888 "kp-tab", /* 0xff89 */
4890 "kp-enter", /* 0xff8d */
4892 "kp-f1", /* 0xff91 */
4896 "kp-home", /* 0xff95 */
4901 "kp-prior", /* kp-page-up */
4902 "kp-next", /* kp-page-down */
4908 0, 0, 0, 0, 0, 0, 0, 0, 0,
4909 "kp-multiply", /* 0xffaa */
4914 "kp-divide", /* 0xffaf */
4915 "kp-0", /* 0xffb0 */
4916 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
4919 "kp-equal", /* 0xffbd */
4920 "f1", /* 0xffbe */ /* IsFunctionKey */
4922 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
4923 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
4924 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
4925 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
4926 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
4927 0, 0, 0, 0, 0, 0, 0, 0,
4928 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
4929 0, 0, 0, 0, 0, 0, 0, "delete"
4932 /* ISO 9995 Function and Modifier Keys; the first byte is 0xFE. */
4933 #define ISO_FUNCTION_KEY_OFFSET 0xfe00
4935 static char *iso_lispy_function_keys
[] =
4937 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe00 */
4938 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe08 */
4939 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe10 */
4940 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfe18 */
4941 "iso-lefttab", /* 0xfe20 */
4942 "iso-move-line-up", "iso-move-line-down",
4943 "iso-partial-line-up", "iso-partial-line-down",
4944 "iso-partial-space-left", "iso-partial-space-right",
4945 "iso-set-margin-left", "iso-set-margin-right", /* 0xffe27, 28 */
4946 "iso-release-margin-left", "iso-release-margin-right",
4947 "iso-release-both-margins",
4948 "iso-fast-cursor-left", "iso-fast-cursor-right",
4949 "iso-fast-cursor-up", "iso-fast-cursor-down",
4950 "iso-continuous-underline", "iso-discontinuous-underline", /* 0xfe30, 31 */
4951 "iso-emphasize", "iso-center-object", "iso-enter", /* ... 0xfe34 */
4954 #endif /* not HAVE_NTGUI */
4956 Lisp_Object Vlispy_mouse_stem
;
4958 static char *lispy_wheel_names
[] =
4960 "wheel-up", "wheel-down"
4963 /* drag-n-drop events are generated when a set of selected files are
4964 dragged from another application and dropped onto an Emacs window. */
4965 static char *lispy_drag_n_drop_names
[] =
4970 /* Scroll bar parts. */
4971 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
4972 Lisp_Object Qup
, Qdown
, Qbottom
, Qend_scroll
;
4973 Lisp_Object Qtop
, Qratio
;
4975 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
4976 Lisp_Object
*scroll_bar_parts
[] = {
4977 &Qabove_handle
, &Qhandle
, &Qbelow_handle
,
4978 &Qup
, &Qdown
, &Qtop
, &Qbottom
, &Qend_scroll
, &Qratio
4981 /* User signal events. */
4982 Lisp_Object Qusr1_signal
, Qusr2_signal
;
4984 Lisp_Object
*lispy_user_signals
[] =
4986 &Qusr1_signal
, &Qusr2_signal
4990 /* A vector, indexed by button number, giving the down-going location
4991 of currently depressed buttons, both scroll bar and non-scroll bar.
4993 The elements have the form
4994 (BUTTON-NUMBER MODIFIER-MASK . REST)
4995 where REST is the cdr of a position as it would be reported in the event.
4997 The make_lispy_event function stores positions here to tell the
4998 difference between click and drag events, and to store the starting
4999 location to be included in drag events. */
5001 static Lisp_Object button_down_location
;
5003 /* Information about the most recent up-going button event: Which
5004 button, what location, and what time. */
5006 static int last_mouse_button
;
5007 static int last_mouse_x
;
5008 static int last_mouse_y
;
5009 static unsigned long button_down_time
;
5011 /* The maximum time between clicks to make a double-click, or Qnil to
5012 disable double-click detection, or Qt for no time limit. */
5014 Lisp_Object Vdouble_click_time
;
5016 /* Maximum number of pixels the mouse may be moved between clicks
5017 to make a double-click. */
5019 EMACS_INT double_click_fuzz
;
5021 /* The number of clicks in this multiple-click. */
5023 int double_click_count
;
5025 /* Return position of a mouse click or wheel event */
5028 make_lispy_position (f
, x
, y
, time
)
5034 enum window_part part
;
5035 Lisp_Object posn
= Qnil
;
5036 Lisp_Object extra_info
= Qnil
;
5039 /* Set `window' to the window under frame pixel coordinates (x,y) */
5041 window
= window_from_coordinates (f
, XINT (*x
), XINT (*y
),
5042 &part
, &wx
, &wy
, 0);
5046 if (WINDOWP (window
))
5048 /* It's a click in window window at frame coordinates (x,y) */
5049 struct window
*w
= XWINDOW (window
);
5050 Lisp_Object string_info
= Qnil
;
5051 int textpos
= -1, rx
= -1, ry
= -1;
5052 int dx
= -1, dy
= -1;
5053 int width
= -1, height
= -1;
5054 Lisp_Object object
= Qnil
;
5056 /* Set event coordinates to window-relative coordinates
5057 for constructing the Lisp event below. */
5061 if (part
== ON_MODE_LINE
|| part
== ON_HEADER_LINE
)
5063 /* Mode line or header line. Look for a string under
5064 the mouse that may have a `local-map' property. */
5068 posn
= part
== ON_MODE_LINE
? Qmode_line
: Qheader_line
;
5070 string
= mode_line_string (w
, part
, &rx
, &ry
, &charpos
,
5071 &object
, &dx
, &dy
, &width
, &height
);
5072 if (STRINGP (string
))
5073 string_info
= Fcons (string
, make_number (charpos
));
5074 if (w
== XWINDOW (selected_window
))
5077 textpos
= XMARKER (w
->pointm
)->charpos
;
5079 else if (part
== ON_VERTICAL_BORDER
)
5081 posn
= Qvertical_line
;
5086 else if (part
== ON_LEFT_MARGIN
|| part
== ON_RIGHT_MARGIN
)
5091 posn
= (part
== ON_LEFT_MARGIN
) ? Qleft_margin
: Qright_margin
;
5093 string
= marginal_area_string (w
, part
, &rx
, &ry
, &charpos
,
5094 &object
, &dx
, &dy
, &width
, &height
);
5095 if (STRINGP (string
))
5096 string_info
= Fcons (string
, make_number (charpos
));
5098 else if (part
== ON_LEFT_FRINGE
|| part
== ON_RIGHT_FRINGE
)
5100 posn
= (part
== ON_LEFT_FRINGE
) ? Qleft_fringe
: Qright_fringe
;
5103 if (part
== ON_RIGHT_FRINGE
)
5104 dx
-= (window_box_width (w
, LEFT_MARGIN_AREA
)
5105 + window_box_width (w
, TEXT_AREA
)
5106 + (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
5107 ? window_box_width (w
, RIGHT_MARGIN_AREA
)
5109 else if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
5110 dx
-= window_box_width (w
, LEFT_MARGIN_AREA
);
5115 Lisp_Object string2
, object2
= Qnil
;
5116 struct display_pos p
;
5118 int width2
, height2
;
5119 wx
= max (WINDOW_LEFT_MARGIN_WIDTH (w
), wx
);
5120 string2
= buffer_posn_from_coords (w
, &wx
, &wy
, &p
,
5121 &object2
, &dx2
, &dy2
,
5123 textpos
= CHARPOS (p
.pos
);
5124 if (rx
< 0) rx
= wx
;
5125 if (ry
< 0) ry
= wy
;
5126 if (dx
< 0) dx
= dx2
;
5127 if (dy
< 0) dy
= dy2
;
5128 if (width
< 0) width
= width2
;
5129 if (height
< 0) height
= height2
;
5133 posn
= make_number (textpos
);
5134 if (STRINGP (string2
))
5135 string_info
= Fcons (string2
,
5136 make_number (CHARPOS (p
.string_pos
)));
5142 #ifdef HAVE_WINDOW_SYSTEM
5143 if (IMAGEP (object
))
5145 Lisp_Object image_map
, hotspot
;
5146 if ((image_map
= Fplist_get (XCDR (object
), QCmap
),
5148 && (hotspot
= find_hot_spot (image_map
, dx
, dy
),
5150 && (hotspot
= XCDR (hotspot
), CONSP (hotspot
)))
5151 posn
= XCAR (hotspot
);
5156 extra_info
= Fcons (object
,
5157 Fcons (Fcons (make_number (dx
),
5159 Fcons (Fcons (make_number (width
),
5160 make_number (height
)),
5164 extra_info
= Fcons (string_info
,
5165 Fcons (make_number (textpos
),
5166 Fcons (Fcons (make_number (rx
),
5172 XSETFRAME (window
, f
);
5177 XSETFASTINT (*x
, 0);
5178 XSETFASTINT (*y
, 0);
5181 return Fcons (window
,
5183 Fcons (Fcons (*x
, *y
),
5184 Fcons (make_number (time
),
5188 /* Given a struct input_event, build the lisp event which represents
5189 it. If EVENT is 0, build a mouse movement event from the mouse
5190 movement buffer, which should have a movement event in it.
5192 Note that events must be passed to this function in the order they
5193 are received; this function stores the location of button presses
5194 in order to build drag events when the button is released. */
5197 make_lispy_event (event
)
5198 struct input_event
*event
;
5202 switch (SWITCH_ENUM_CAST (event
->kind
))
5204 /* A simple keystroke. */
5205 case ASCII_KEYSTROKE_EVENT
:
5207 Lisp_Object lispy_c
;
5208 int c
= event
->code
& 0377;
5209 /* Turn ASCII characters into control characters
5211 if (event
->modifiers
& ctrl_modifier
)
5212 c
= make_ctrl_char (c
);
5214 /* Add in the other modifier bits. We took care of ctrl_modifier
5215 just above, and the shift key was taken care of by the X code,
5216 and applied to control characters by make_ctrl_char. */
5217 c
|= (event
->modifiers
5218 & (meta_modifier
| alt_modifier
5219 | hyper_modifier
| super_modifier
));
5220 /* Distinguish Shift-SPC from SPC. */
5221 if ((event
->code
& 0377) == 040
5222 && event
->modifiers
& shift_modifier
)
5223 c
|= shift_modifier
;
5224 button_down_time
= 0;
5225 XSETFASTINT (lispy_c
, c
);
5229 case MULTIBYTE_CHAR_KEYSTROKE_EVENT
:
5231 Lisp_Object lispy_c
;
5232 int c
= event
->code
;
5234 /* Add in the other modifier bits. We took care of ctrl_modifier
5235 just above, and the shift key was taken care of by the X code,
5236 and applied to control characters by make_ctrl_char. */
5237 c
|= (event
->modifiers
5238 & (meta_modifier
| alt_modifier
5239 | hyper_modifier
| super_modifier
| ctrl_modifier
));
5240 /* What about the `shift' modifier ? */
5241 button_down_time
= 0;
5242 XSETFASTINT (lispy_c
, c
);
5246 /* A function key. The symbol may need to have modifier prefixes
5248 case NON_ASCII_KEYSTROKE_EVENT
:
5249 button_down_time
= 0;
5251 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
5252 if (event
->code
== lispy_accent_codes
[i
])
5253 return modify_event_symbol (i
,
5255 Qfunction_key
, Qnil
,
5256 lispy_accent_keys
, &accent_key_syms
,
5257 (sizeof (lispy_accent_keys
)
5258 / sizeof (lispy_accent_keys
[0])));
5262 if (event
->code
>= 0x400 && event
->code
< 0x500)
5263 return modify_event_symbol (event
->code
- 0x400,
5264 event
->modifiers
& ~shift_modifier
,
5265 Qfunction_key
, Qnil
,
5266 lispy_kana_keys
, &func_key_syms
,
5267 (sizeof (lispy_kana_keys
)
5268 / sizeof (lispy_kana_keys
[0])));
5269 #endif /* XK_kana_A */
5272 #ifdef ISO_FUNCTION_KEY_OFFSET
5273 if (event
->code
< FUNCTION_KEY_OFFSET
5274 && event
->code
>= ISO_FUNCTION_KEY_OFFSET
)
5275 return modify_event_symbol (event
->code
- ISO_FUNCTION_KEY_OFFSET
,
5277 Qfunction_key
, Qnil
,
5278 iso_lispy_function_keys
, &func_key_syms
,
5279 (sizeof (iso_lispy_function_keys
)
5280 / sizeof (iso_lispy_function_keys
[0])));
5283 /* Handle system-specific or unknown keysyms. */
5284 if (event
->code
& (1 << 28)
5285 || event
->code
- FUNCTION_KEY_OFFSET
< 0
5286 || (event
->code
- FUNCTION_KEY_OFFSET
5287 >= sizeof lispy_function_keys
/ sizeof *lispy_function_keys
)
5288 || !lispy_function_keys
[event
->code
- FUNCTION_KEY_OFFSET
])
5290 /* We need to use an alist rather than a vector as the cache
5291 since we can't make a vector long enuf. */
5292 if (NILP (current_kboard
->system_key_syms
))
5293 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
5294 return modify_event_symbol (event
->code
,
5297 current_kboard
->Vsystem_key_alist
,
5298 0, ¤t_kboard
->system_key_syms
,
5302 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
5304 Qfunction_key
, Qnil
,
5305 lispy_function_keys
, &func_key_syms
,
5306 (sizeof (lispy_function_keys
)
5307 / sizeof (lispy_function_keys
[0])));
5310 /* A mouse click. Figure out where it is, decide whether it's
5311 a press, click or drag, and build the appropriate structure. */
5312 case MOUSE_CLICK_EVENT
:
5313 #ifndef USE_TOOLKIT_SCROLL_BARS
5314 case SCROLL_BAR_CLICK_EVENT
:
5317 int button
= event
->code
;
5319 Lisp_Object position
;
5320 Lisp_Object
*start_pos_ptr
;
5321 Lisp_Object start_pos
;
5325 /* Build the position as appropriate for this mouse click. */
5326 if (event
->kind
== MOUSE_CLICK_EVENT
)
5328 struct frame
*f
= XFRAME (event
->frame_or_window
);
5329 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5333 /* Ignore mouse events that were made on frame that
5334 have been deleted. */
5335 if (! FRAME_LIVE_P (f
))
5338 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
5339 /* EVENT->x and EVENT->y are frame-relative pixel
5340 coordinates at this place. Under old redisplay, COLUMN
5341 and ROW are set to frame relative glyph coordinates
5342 which are then used to determine whether this click is
5343 in a menu (non-toolkit version). */
5344 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
5345 &column
, &row
, NULL
, 1);
5347 /* In the non-toolkit version, clicks on the menu bar
5348 are ordinary button events in the event buffer.
5349 Distinguish them, and invoke the menu.
5351 (In the toolkit version, the toolkit handles the menu bar
5352 and Emacs doesn't know about it until after the user
5353 makes a selection.) */
5354 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
5355 && (event
->modifiers
& down_modifier
))
5357 Lisp_Object items
, item
;
5362 /* Activate the menu bar on the down event. If the
5363 up event comes in before the menu code can deal with it,
5365 if (! (event
->modifiers
& down_modifier
))
5369 /* Find the menu bar item under `column'. */
5371 items
= FRAME_MENU_BAR_ITEMS (f
);
5372 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 4)
5374 Lisp_Object pos
, string
;
5375 string
= AREF (items
, i
+ 1);
5376 pos
= AREF (items
, i
+ 3);
5379 if (column
>= XINT (pos
)
5380 && column
< XINT (pos
) + SCHARS (string
))
5382 item
= AREF (items
, i
);
5387 /* ELisp manual 2.4b says (x y) are window relative but
5388 code says they are frame-relative. */
5390 = Fcons (event
->frame_or_window
,
5392 Fcons (Fcons (event
->x
, event
->y
),
5393 Fcons (make_number (event
->timestamp
),
5396 return Fcons (item
, Fcons (position
, Qnil
));
5398 #endif /* not USE_X_TOOLKIT && not USE_GTK */
5400 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5403 #ifndef USE_TOOLKIT_SCROLL_BARS
5406 /* It's a scrollbar click. */
5408 Lisp_Object portion_whole
;
5411 window
= event
->frame_or_window
;
5412 portion_whole
= Fcons (event
->x
, event
->y
);
5413 part
= *scroll_bar_parts
[(int) event
->part
];
5417 Fcons (Qvertical_scroll_bar
,
5418 Fcons (portion_whole
,
5419 Fcons (make_number (event
->timestamp
),
5420 Fcons (part
, Qnil
)))));
5422 #endif /* not USE_TOOLKIT_SCROLL_BARS */
5424 if (button
>= ASIZE (button_down_location
))
5426 button_down_location
= larger_vector (button_down_location
,
5428 mouse_syms
= larger_vector (mouse_syms
, button
+ 1, Qnil
);
5431 start_pos_ptr
= &AREF (button_down_location
, button
);
5432 start_pos
= *start_pos_ptr
;
5433 *start_pos_ptr
= Qnil
;
5436 /* On window-system frames, use the value of
5437 double-click-fuzz as is. On other frames, interpret it
5438 as a multiple of 1/8 characters. */
5442 if (WINDOWP (event
->frame_or_window
))
5443 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5444 else if (FRAMEP (event
->frame_or_window
))
5445 f
= XFRAME (event
->frame_or_window
);
5449 if (FRAME_WINDOW_P (f
))
5450 fuzz
= double_click_fuzz
;
5452 fuzz
= double_click_fuzz
/ 8;
5454 is_double
= (button
== last_mouse_button
5455 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5456 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5457 && button_down_time
!= 0
5458 && (EQ (Vdouble_click_time
, Qt
)
5459 || (INTEGERP (Vdouble_click_time
)
5460 && ((int)(event
->timestamp
- button_down_time
)
5461 < XINT (Vdouble_click_time
)))));
5464 last_mouse_button
= button
;
5465 last_mouse_x
= XINT (event
->x
);
5466 last_mouse_y
= XINT (event
->y
);
5468 /* If this is a button press, squirrel away the location, so
5469 we can decide later whether it was a click or a drag. */
5470 if (event
->modifiers
& down_modifier
)
5474 double_click_count
++;
5475 event
->modifiers
|= ((double_click_count
> 2)
5480 double_click_count
= 1;
5481 button_down_time
= event
->timestamp
;
5482 *start_pos_ptr
= Fcopy_alist (position
);
5485 /* Now we're releasing a button - check the co-ordinates to
5486 see if this was a click or a drag. */
5487 else if (event
->modifiers
& up_modifier
)
5489 /* If we did not see a down before this up, ignore the up.
5490 Probably this happened because the down event chose a
5491 menu item. It would be an annoyance to treat the
5492 release of the button that chose the menu item as a
5495 if (!CONSP (start_pos
))
5498 event
->modifiers
&= ~up_modifier
;
5499 #if 0 /* Formerly we treated an up with no down as a click event. */
5500 if (!CONSP (start_pos
))
5501 event
->modifiers
|= click_modifier
;
5506 EMACS_INT xdiff
= double_click_fuzz
, ydiff
= double_click_fuzz
;
5508 /* The third element of every position
5509 should be the (x,y) pair. */
5510 down
= Fcar (Fcdr (Fcdr (start_pos
)));
5512 && INTEGERP (XCAR (down
)) && INTEGERP (XCDR (down
)))
5514 xdiff
= XFASTINT (event
->x
) - XFASTINT (XCAR (down
));
5515 ydiff
= XFASTINT (event
->y
) - XFASTINT (XCDR (down
));
5518 if (xdiff
< double_click_fuzz
&& xdiff
> - double_click_fuzz
5519 && ydiff
< double_click_fuzz
5520 && ydiff
> - double_click_fuzz
)
5521 /* Mouse hasn't moved (much). */
5522 event
->modifiers
|= click_modifier
;
5525 button_down_time
= 0;
5526 event
->modifiers
|= drag_modifier
;
5529 /* Don't check is_double; treat this as multiple
5530 if the down-event was multiple. */
5531 if (double_click_count
> 1)
5532 event
->modifiers
|= ((double_click_count
> 2)
5538 /* Every mouse event should either have the down_modifier or
5539 the up_modifier set. */
5543 /* Get the symbol we should use for the mouse click. */
5546 head
= modify_event_symbol (button
,
5548 Qmouse_click
, Vlispy_mouse_stem
,
5551 XVECTOR (mouse_syms
)->size
);
5552 if (event
->modifiers
& drag_modifier
)
5557 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
5560 Fcons (make_number (double_click_count
),
5571 Lisp_Object position
;
5574 /* Build the position as appropriate for this mouse click. */
5575 struct frame
*f
= XFRAME (event
->frame_or_window
);
5577 /* Ignore wheel events that were made on frame that have been
5579 if (! FRAME_LIVE_P (f
))
5582 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5585 /* Set double or triple modifiers to indicate the wheel speed. */
5587 /* On window-system frames, use the value of
5588 double-click-fuzz as is. On other frames, interpret it
5589 as a multiple of 1/8 characters. */
5594 if (WINDOWP (event
->frame_or_window
))
5595 f
= XFRAME (XWINDOW (event
->frame_or_window
)->frame
);
5596 else if (FRAMEP (event
->frame_or_window
))
5597 f
= XFRAME (event
->frame_or_window
);
5601 if (FRAME_WINDOW_P (f
))
5602 fuzz
= double_click_fuzz
;
5604 fuzz
= double_click_fuzz
/ 8;
5606 is_double
= (last_mouse_button
< 0
5607 && (abs (XINT (event
->x
) - last_mouse_x
) <= fuzz
)
5608 && (abs (XINT (event
->y
) - last_mouse_y
) <= fuzz
)
5609 && button_down_time
!= 0
5610 && (EQ (Vdouble_click_time
, Qt
)
5611 || (INTEGERP (Vdouble_click_time
)
5612 && ((int)(event
->timestamp
- button_down_time
)
5613 < XINT (Vdouble_click_time
)))));
5616 double_click_count
++;
5617 event
->modifiers
|= ((double_click_count
> 2)
5623 double_click_count
= 1;
5624 event
->modifiers
|= click_modifier
;
5627 button_down_time
= event
->timestamp
;
5628 /* Use a negative value to distinguish wheel from mouse button. */
5629 last_mouse_button
= -1;
5630 last_mouse_x
= XINT (event
->x
);
5631 last_mouse_y
= XINT (event
->y
);
5637 if (event
->modifiers
& up_modifier
)
5639 /* Emit a wheel-up event. */
5640 event
->modifiers
&= ~up_modifier
;
5643 else if (event
->modifiers
& down_modifier
)
5645 /* Emit a wheel-down event. */
5646 event
->modifiers
&= ~down_modifier
;
5650 /* Every wheel event should either have the down_modifier or
5651 the up_modifier set. */
5654 /* Get the symbol we should use for the wheel event. */
5655 head
= modify_event_symbol (symbol_num
,
5661 ASIZE (wheel_syms
));
5664 if (event
->modifiers
& (double_modifier
| triple_modifier
))
5667 Fcons (make_number (double_click_count
),
5676 #ifdef USE_TOOLKIT_SCROLL_BARS
5678 /* We don't have down and up events if using toolkit scroll bars,
5679 so make this always a click event. Store in the `part' of
5680 the Lisp event a symbol which maps to the following actions:
5682 `above_handle' page up
5683 `below_handle' page down
5687 `bottom' bottom of buffer
5688 `handle' thumb has been dragged.
5689 `end-scroll' end of interaction with scroll bar
5691 The incoming input_event contains in its `part' member an
5692 index of type `enum scroll_bar_part' which we can use as an
5693 index in scroll_bar_parts to get the appropriate symbol. */
5695 case SCROLL_BAR_CLICK_EVENT
:
5697 Lisp_Object position
, head
, window
, portion_whole
, part
;
5699 window
= event
->frame_or_window
;
5700 portion_whole
= Fcons (event
->x
, event
->y
);
5701 part
= *scroll_bar_parts
[(int) event
->part
];
5705 Fcons (Qvertical_scroll_bar
,
5706 Fcons (portion_whole
,
5707 Fcons (make_number (event
->timestamp
),
5708 Fcons (part
, Qnil
)))));
5710 /* Always treat scroll bar events as clicks. */
5711 event
->modifiers
|= click_modifier
;
5712 event
->modifiers
&= ~up_modifier
;
5714 if (event
->code
>= ASIZE (mouse_syms
))
5715 mouse_syms
= larger_vector (mouse_syms
, event
->code
+ 1, Qnil
);
5717 /* Get the symbol we should use for the mouse click. */
5718 head
= modify_event_symbol (event
->code
,
5723 XVECTOR (mouse_syms
)->size
);
5724 return Fcons (head
, Fcons (position
, Qnil
));
5727 #endif /* USE_TOOLKIT_SCROLL_BARS */
5730 case W32_SCROLL_BAR_CLICK_EVENT
:
5732 int button
= event
->code
;
5734 Lisp_Object position
;
5735 Lisp_Object
*start_pos_ptr
;
5736 Lisp_Object start_pos
;
5740 Lisp_Object portion_whole
;
5743 window
= event
->frame_or_window
;
5744 portion_whole
= Fcons (event
->x
, event
->y
);
5745 part
= *scroll_bar_parts
[(int) event
->part
];
5749 Fcons (Qvertical_scroll_bar
,
5750 Fcons (portion_whole
,
5751 Fcons (make_number (event
->timestamp
),
5752 Fcons (part
, Qnil
)))));
5755 /* Always treat W32 scroll bar events as clicks. */
5756 event
->modifiers
|= click_modifier
;
5759 /* Get the symbol we should use for the mouse click. */
5762 head
= modify_event_symbol (button
,
5767 XVECTOR (mouse_syms
)->size
);
5773 #endif /* WINDOWSNT */
5775 case DRAG_N_DROP_EVENT
:
5778 Lisp_Object head
, position
;
5781 /* The frame_or_window field should be a cons of the frame in
5782 which the event occurred and a list of the filenames
5784 if (! CONSP (event
->frame_or_window
))
5787 f
= XFRAME (XCAR (event
->frame_or_window
));
5788 files
= XCDR (event
->frame_or_window
);
5790 /* Ignore mouse events that were made on frames that
5791 have been deleted. */
5792 if (! FRAME_LIVE_P (f
))
5795 position
= make_lispy_position (f
, &event
->x
, &event
->y
,
5798 head
= modify_event_symbol (0, event
->modifiers
,
5800 lispy_drag_n_drop_names
,
5801 &drag_n_drop_syms
, 1);
5807 #endif /* HAVE_MOUSE */
5809 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) || defined (MAC_OS) \
5810 || defined (USE_GTK)
5811 case MENU_BAR_EVENT
:
5812 if (EQ (event
->arg
, event
->frame_or_window
))
5813 /* This is the prefix key. We translate this to
5814 `(menu_bar)' because the code in keyboard.c for menu
5815 events, which we use, relies on this. */
5816 return Fcons (Qmenu_bar
, Qnil
);
5820 case SELECT_WINDOW_EVENT
:
5821 /* Make an event (select-window (WINDOW)). */
5822 return Fcons (Qselect_window
,
5823 Fcons (Fcons (event
->frame_or_window
, Qnil
),
5826 case TOOL_BAR_EVENT
:
5827 if (EQ (event
->arg
, event
->frame_or_window
))
5828 /* This is the prefix key. We translate this to
5829 `(tool_bar)' because the code in keyboard.c for tool bar
5830 events, which we use, relies on this. */
5831 return Fcons (Qtool_bar
, Qnil
);
5832 else if (SYMBOLP (event
->arg
))
5833 return apply_modifiers (event
->modifiers
, event
->arg
);
5836 case USER_SIGNAL_EVENT
:
5837 /* A user signal. */
5838 return *lispy_user_signals
[event
->code
];
5840 case SAVE_SESSION_EVENT
:
5841 return Qsave_session
;
5843 /* The 'kind' field of the event is something we don't recognize. */
5852 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
5854 Lisp_Object bar_window
;
5855 enum scroll_bar_part part
;
5859 /* Is it a scroll bar movement? */
5860 if (frame
&& ! NILP (bar_window
))
5862 Lisp_Object part_sym
;
5864 part_sym
= *scroll_bar_parts
[(int) part
];
5865 return Fcons (Qscroll_bar_movement
,
5866 (Fcons (Fcons (bar_window
,
5867 Fcons (Qvertical_scroll_bar
,
5868 Fcons (Fcons (x
, y
),
5869 Fcons (make_number (time
),
5875 /* Or is it an ordinary mouse movement? */
5878 Lisp_Object position
;
5880 position
= make_lispy_position (frame
, &x
, &y
, time
);
5882 return Fcons (Qmouse_movement
,
5888 #endif /* HAVE_MOUSE */
5890 /* Construct a switch frame event. */
5892 make_lispy_switch_frame (frame
)
5895 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
5898 /* Manipulating modifiers. */
5900 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
5902 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
5903 SYMBOL's name of the end of the modifiers; the string from this
5904 position is the unmodified symbol name.
5906 This doesn't use any caches. */
5909 parse_modifiers_uncached (symbol
, modifier_end
)
5917 CHECK_SYMBOL (symbol
);
5920 name
= SYMBOL_NAME (symbol
);
5922 for (i
= 0; i
+2 <= SBYTES (name
); )
5924 int this_mod_end
= 0;
5927 /* See if the name continues with a modifier word.
5928 Check that the word appears, but don't check what follows it.
5929 Set this_mod and this_mod_end to record what we find. */
5931 switch (SREF (name
, i
))
5933 #define SINGLE_LETTER_MOD(BIT) \
5934 (this_mod_end = i + 1, this_mod = BIT)
5937 SINGLE_LETTER_MOD (alt_modifier
);
5941 SINGLE_LETTER_MOD (ctrl_modifier
);
5945 SINGLE_LETTER_MOD (hyper_modifier
);
5949 SINGLE_LETTER_MOD (meta_modifier
);
5953 SINGLE_LETTER_MOD (shift_modifier
);
5957 SINGLE_LETTER_MOD (super_modifier
);
5960 #undef SINGLE_LETTER_MOD
5962 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
5963 if (i + LEN + 1 <= SBYTES (name) \
5964 && ! strncmp (SDATA (name) + i, NAME, LEN)) \
5966 this_mod_end = i + LEN; \
5971 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
5972 MULTI_LETTER_MOD (down_modifier
, "down", 4);
5973 MULTI_LETTER_MOD (double_modifier
, "double", 6);
5977 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
5979 #undef MULTI_LETTER_MOD
5983 /* If we found no modifier, stop looking for them. */
5984 if (this_mod_end
== 0)
5987 /* Check there is a dash after the modifier, so that it
5988 really is a modifier. */
5989 if (this_mod_end
>= SBYTES (name
)
5990 || SREF (name
, this_mod_end
) != '-')
5993 /* This modifier is real; look for another. */
5994 modifiers
|= this_mod
;
5995 i
= this_mod_end
+ 1;
5998 /* Should we include the `click' modifier? */
5999 if (! (modifiers
& (down_modifier
| drag_modifier
6000 | double_modifier
| triple_modifier
))
6001 && i
+ 7 == SBYTES (name
)
6002 && strncmp (SDATA (name
) + i
, "mouse-", 6) == 0
6003 && ('0' <= SREF (name
, i
+ 6) && SREF (name
, i
+ 6) <= '9'))
6004 modifiers
|= click_modifier
;
6012 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
6013 prepended to the string BASE[0..BASE_LEN-1].
6014 This doesn't use any caches. */
6016 apply_modifiers_uncached (modifiers
, base
, base_len
, base_len_byte
)
6019 int base_len
, base_len_byte
;
6021 /* Since BASE could contain nulls, we can't use intern here; we have
6022 to use Fintern, which expects a genuine Lisp_String, and keeps a
6025 = (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
6031 /* Only the event queue may use the `up' modifier; it should always
6032 be turned into a click or drag event before presented to lisp code. */
6033 if (modifiers
& up_modifier
)
6036 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
6037 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
6038 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
6039 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
6040 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
6041 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
6042 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
6043 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
6044 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
6045 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
6046 /* The click modifier is denoted by the absence of other modifiers. */
6050 mod_len
= p
- new_mods
;
6054 Lisp_Object new_name
;
6056 new_name
= make_uninit_multibyte_string (mod_len
+ base_len
,
6057 mod_len
+ base_len_byte
);
6058 bcopy (new_mods
, SDATA (new_name
), mod_len
);
6059 bcopy (base
, SDATA (new_name
) + mod_len
, base_len_byte
);
6061 return Fintern (new_name
, Qnil
);
6066 static char *modifier_names
[] =
6068 "up", "down", "drag", "click", "double", "triple", 0, 0,
6069 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
6070 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
6072 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
6074 static Lisp_Object modifier_symbols
;
6076 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
6078 lispy_modifier_list (modifiers
)
6081 Lisp_Object modifier_list
;
6084 modifier_list
= Qnil
;
6085 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
6086 if (modifiers
& (1<<i
))
6087 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
6090 return modifier_list
;
6094 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
6095 where UNMODIFIED is the unmodified form of SYMBOL,
6096 MASK is the set of modifiers present in SYMBOL's name.
6097 This is similar to parse_modifiers_uncached, but uses the cache in
6098 SYMBOL's Qevent_symbol_element_mask property, and maintains the
6099 Qevent_symbol_elements property. */
6102 parse_modifiers (symbol
)
6105 Lisp_Object elements
;
6107 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
6108 if (CONSP (elements
))
6113 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
6114 Lisp_Object unmodified
;
6117 unmodified
= Fintern (make_string (SDATA (SYMBOL_NAME (symbol
)) + end
,
6118 SBYTES (SYMBOL_NAME (symbol
)) - end
),
6121 if (modifiers
& ~INTMASK
)
6123 XSETFASTINT (mask
, modifiers
);
6124 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
6126 /* Cache the parsing results on SYMBOL. */
6127 Fput (symbol
, Qevent_symbol_element_mask
,
6129 Fput (symbol
, Qevent_symbol_elements
,
6130 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
6132 /* Since we know that SYMBOL is modifiers applied to unmodified,
6133 it would be nice to put that in unmodified's cache.
6134 But we can't, since we're not sure that parse_modifiers is
6141 /* Apply the modifiers MODIFIERS to the symbol BASE.
6142 BASE must be unmodified.
6144 This is like apply_modifiers_uncached, but uses BASE's
6145 Qmodifier_cache property, if present. It also builds
6146 Qevent_symbol_elements properties, since it has that info anyway.
6148 apply_modifiers copies the value of BASE's Qevent_kind property to
6149 the modified symbol. */
6151 apply_modifiers (modifiers
, base
)
6155 Lisp_Object cache
, index
, entry
, new_symbol
;
6157 /* Mask out upper bits. We don't know where this value's been. */
6158 modifiers
&= INTMASK
;
6160 /* The click modifier never figures into cache indices. */
6161 cache
= Fget (base
, Qmodifier_cache
);
6162 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
6163 entry
= assq_no_quit (index
, cache
);
6166 new_symbol
= XCDR (entry
);
6169 /* We have to create the symbol ourselves. */
6170 new_symbol
= apply_modifiers_uncached (modifiers
,
6171 SDATA (SYMBOL_NAME (base
)),
6172 SCHARS (SYMBOL_NAME (base
)),
6173 SBYTES (SYMBOL_NAME (base
)));
6175 /* Add the new symbol to the base's cache. */
6176 entry
= Fcons (index
, new_symbol
);
6177 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
6179 /* We have the parsing info now for free, so we could add it to
6181 XSETFASTINT (index, modifiers);
6182 Fput (new_symbol, Qevent_symbol_element_mask,
6183 Fcons (base, Fcons (index, Qnil)));
6184 Fput (new_symbol, Qevent_symbol_elements,
6185 Fcons (base, lispy_modifier_list (modifiers)));
6186 Sadly, this is only correct if `base' is indeed a base event,
6187 which is not necessarily the case. -stef */
6190 /* Make sure this symbol is of the same kind as BASE.
6192 You'd think we could just set this once and for all when we
6193 intern the symbol above, but reorder_modifiers may call us when
6194 BASE's property isn't set right; we can't assume that just
6195 because it has a Qmodifier_cache property it must have its
6196 Qevent_kind set right as well. */
6197 if (NILP (Fget (new_symbol
, Qevent_kind
)))
6201 kind
= Fget (base
, Qevent_kind
);
6203 Fput (new_symbol
, Qevent_kind
, kind
);
6210 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
6211 return a symbol with the modifiers placed in the canonical order.
6212 Canonical order is alphabetical, except for down and drag, which
6213 always come last. The 'click' modifier is never written out.
6215 Fdefine_key calls this to make sure that (for example) C-M-foo
6216 and M-C-foo end up being equivalent in the keymap. */
6219 reorder_modifiers (symbol
)
6222 /* It's hopefully okay to write the code this way, since everything
6223 will soon be in caches, and no consing will be done at all. */
6226 parsed
= parse_modifiers (symbol
);
6227 return apply_modifiers ((int) XINT (XCAR (XCDR (parsed
))),
6232 /* For handling events, we often want to produce a symbol whose name
6233 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
6234 to some base, like the name of a function key or mouse button.
6235 modify_event_symbol produces symbols of this sort.
6237 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
6238 is the name of the i'th symbol. TABLE_SIZE is the number of elements
6241 Alternatively, NAME_ALIST_OR_STEM is either an alist mapping codes
6242 into symbol names, or a string specifying a name stem used to
6243 construct a symbol name or the form `STEM-N', where N is the decimal
6244 representation of SYMBOL_NUM. NAME_ALIST_OR_STEM is used if it is
6245 non-nil; otherwise NAME_TABLE is used.
6247 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
6248 persist between calls to modify_event_symbol that it can use to
6249 store a cache of the symbols it's generated for this NAME_TABLE
6250 before. The object stored there may be a vector or an alist.
6252 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
6254 MODIFIERS is a set of modifier bits (as given in struct input_events)
6255 whose prefixes should be applied to the symbol name.
6257 SYMBOL_KIND is the value to be placed in the event_kind property of
6258 the returned symbol.
6260 The symbols we create are supposed to have an
6261 `event-symbol-elements' property, which lists the modifiers present
6262 in the symbol's name. */
6265 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist_or_stem
,
6266 name_table
, symbol_table
, table_size
)
6269 Lisp_Object symbol_kind
;
6270 Lisp_Object name_alist_or_stem
;
6272 Lisp_Object
*symbol_table
;
6273 unsigned int table_size
;
6276 Lisp_Object symbol_int
;
6278 /* Get rid of the "vendor-specific" bit here. */
6279 XSETINT (symbol_int
, symbol_num
& 0xffffff);
6281 /* Is this a request for a valid symbol? */
6282 if (symbol_num
< 0 || symbol_num
>= table_size
)
6285 if (CONSP (*symbol_table
))
6286 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
6288 /* If *symbol_table doesn't seem to be initialized properly, fix that.
6289 *symbol_table should be a lisp vector TABLE_SIZE elements long,
6290 where the Nth element is the symbol for NAME_TABLE[N], or nil if
6291 we've never used that symbol before. */
6294 if (! VECTORP (*symbol_table
)
6295 || XVECTOR (*symbol_table
)->size
!= table_size
)
6299 XSETFASTINT (size
, table_size
);
6300 *symbol_table
= Fmake_vector (size
, Qnil
);
6303 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
6306 /* Have we already used this symbol before? */
6309 /* No; let's create it. */
6310 if (CONSP (name_alist_or_stem
))
6311 value
= Fcdr_safe (Fassq (symbol_int
, name_alist_or_stem
));
6312 else if (STRINGP (name_alist_or_stem
))
6314 int len
= SBYTES (name_alist_or_stem
);
6315 char *buf
= (char *) alloca (len
+ 50);
6316 sprintf (buf
, "%s-%ld", SDATA (name_alist_or_stem
),
6317 (long) XINT (symbol_int
) + 1);
6318 value
= intern (buf
);
6320 else if (name_table
!= 0 && name_table
[symbol_num
])
6321 value
= intern (name_table
[symbol_num
]);
6323 #ifdef HAVE_WINDOW_SYSTEM
6326 char *name
= x_get_keysym_name (symbol_num
);
6328 value
= intern (name
);
6335 sprintf (buf
, "key-%d", symbol_num
);
6336 value
= intern (buf
);
6339 if (CONSP (*symbol_table
))
6340 *symbol_table
= Fcons (Fcons (symbol_int
, value
), *symbol_table
);
6342 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
6344 /* Fill in the cache entries for this symbol; this also
6345 builds the Qevent_symbol_elements property, which the user
6347 apply_modifiers (modifiers
& click_modifier
, value
);
6348 Fput (value
, Qevent_kind
, symbol_kind
);
6351 /* Apply modifiers to that symbol. */
6352 return apply_modifiers (modifiers
, value
);
6355 /* Convert a list that represents an event type,
6356 such as (ctrl meta backspace), into the usual representation of that
6357 event type as a number or a symbol. */
6359 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
6360 doc
: /* Convert the event description list EVENT-DESC to an event type.
6361 EVENT-DESC should contain one base event type (a character or symbol)
6362 and zero or more modifier names (control, meta, hyper, super, shift, alt,
6363 drag, down, double or triple). The base must be last.
6364 The return value is an event type (a character or symbol) which
6365 has the same base event type and all the specified modifiers. */)
6367 Lisp_Object event_desc
;
6375 while (CONSP (rest
))
6383 /* Given a symbol, see if it is a modifier name. */
6384 if (SYMBOLP (elt
) && CONSP (rest
))
6385 this = parse_solitary_modifier (elt
);
6389 else if (!NILP (base
))
6390 error ("Two bases given in one event");
6396 /* Let the symbol A refer to the character A. */
6397 if (SYMBOLP (base
) && SCHARS (SYMBOL_NAME (base
)) == 1)
6398 XSETINT (base
, SREF (SYMBOL_NAME (base
), 0));
6400 if (INTEGERP (base
))
6402 /* Turn (shift a) into A. */
6403 if ((modifiers
& shift_modifier
) != 0
6404 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
6406 XSETINT (base
, XINT (base
) - ('a' - 'A'));
6407 modifiers
&= ~shift_modifier
;
6410 /* Turn (control a) into C-a. */
6411 if (modifiers
& ctrl_modifier
)
6412 return make_number ((modifiers
& ~ctrl_modifier
)
6413 | make_ctrl_char (XINT (base
)));
6415 return make_number (modifiers
| XINT (base
));
6417 else if (SYMBOLP (base
))
6418 return apply_modifiers (modifiers
, base
);
6421 error ("Invalid base event");
6426 /* Try to recognize SYMBOL as a modifier name.
6427 Return the modifier flag bit, or 0 if not recognized. */
6430 parse_solitary_modifier (symbol
)
6433 Lisp_Object name
= SYMBOL_NAME (symbol
);
6435 switch (SREF (name
, 0))
6437 #define SINGLE_LETTER_MOD(BIT) \
6438 if (SBYTES (name) == 1) \
6441 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
6442 if (LEN == SBYTES (name) \
6443 && ! strncmp (SDATA (name), NAME, LEN)) \
6447 SINGLE_LETTER_MOD (alt_modifier
);
6451 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
6455 SINGLE_LETTER_MOD (ctrl_modifier
);
6459 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
6460 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
6464 SINGLE_LETTER_MOD (hyper_modifier
);
6468 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
6472 SINGLE_LETTER_MOD (meta_modifier
);
6476 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
6480 SINGLE_LETTER_MOD (shift_modifier
);
6484 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
6485 MULTI_LETTER_MOD (super_modifier
, "super", 5);
6486 SINGLE_LETTER_MOD (super_modifier
);
6490 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
6491 MULTI_LETTER_MOD (down_modifier
, "down", 4);
6492 MULTI_LETTER_MOD (double_modifier
, "double", 6);
6496 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
6499 #undef SINGLE_LETTER_MOD
6500 #undef MULTI_LETTER_MOD
6506 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
6507 Such a list is not valid as an event,
6508 but it can be a Lucid-style event type list. */
6511 lucid_event_type_list_p (object
)
6516 if (! CONSP (object
))
6519 if (EQ (XCAR (object
), Qhelp_echo
)
6520 || EQ (XCAR (object
), Qvertical_line
)
6521 || EQ (XCAR (object
), Qmode_line
)
6522 || EQ (XCAR (object
), Qheader_line
))
6525 for (tail
= object
; CONSP (tail
); tail
= XCDR (tail
))
6529 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
6536 /* Store into *addr a value nonzero if terminal input chars are available.
6537 Serves the purpose of ioctl (0, FIONREAD, addr)
6538 but works even if FIONREAD does not exist.
6539 (In fact, this may actually read some input.)
6541 If READABLE_EVENTS_DO_TIMERS_NOW is set in FLAGS, actually run
6542 timer events that are ripe.
6543 If READABLE_EVENTS_FILTER_EVENTS is set in FLAGS, ignore internal
6544 events (FOCUS_IN_EVENT).
6545 If READABLE_EVENTS_IGNORE_SQUEEZABLES is set in FLAGS, ignore mouse
6549 get_input_pending (addr
, flags
)
6553 /* First of all, have we already counted some input? */
6554 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6556 /* If input is being read as it arrives, and we have none, there is none. */
6557 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
6560 /* Try to read some input and see how much we get. */
6562 *addr
= (!NILP (Vquit_flag
) || readable_events (flags
));
6565 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
6568 gobble_input (expected
)
6573 if (interrupt_input
)
6576 mask
= sigblock (sigmask (SIGIO
));
6577 read_avail_input (expected
);
6581 #ifdef POLL_FOR_INPUT
6582 /* XXX This condition was (read_socket_hook && !interrupt_input),
6583 but read_socket_hook is not global anymore. Let's pretend that
6585 if (!interrupt_input
&& poll_suppress_count
== 0)
6588 mask
= sigblock (sigmask (SIGALRM
));
6589 read_avail_input (expected
);
6595 read_avail_input (expected
);
6599 /* Put a BUFFER_SWITCH_EVENT in the buffer
6600 so that read_key_sequence will notice the new current buffer. */
6603 record_asynch_buffer_change ()
6605 struct input_event event
;
6609 event
.kind
= BUFFER_SWITCH_EVENT
;
6610 event
.frame_or_window
= Qnil
;
6614 /* We don't need a buffer-switch event unless Emacs is waiting for input.
6615 The purpose of the event is to make read_key_sequence look up the
6616 keymaps again. If we aren't in read_key_sequence, we don't need one,
6617 and the event could cause trouble by messing up (input-pending-p). */
6618 tem
= Fwaiting_for_user_input_p ();
6622 /* We never need these events if we have no asynchronous subprocesses. */
6626 /* Make sure no interrupt happens while storing the event. */
6628 if (interrupt_input
)
6631 mask
= sigblock (sigmask (SIGIO
));
6632 kbd_buffer_store_event (&event
);
6639 kbd_buffer_store_event (&event
);
6646 /* Read any terminal input already buffered up by the system
6647 into the kbd_buffer, but do not wait.
6649 EXPECTED should be nonzero if the caller knows there is some input.
6651 Except on VMS, all input is read by this function.
6652 If interrupt_input is nonzero, this function MUST be called
6653 only when SIGIO is blocked.
6655 Returns the number of keyboard chars read, or -1 meaning
6656 this is a bad time to try to read input. */
6659 read_avail_input (expected
)
6666 /* Loop through the available displays, and call their input hooks. */
6670 struct display
*next
= d
->next_display
;
6672 if (d
->read_socket_hook
)
6675 struct input_event hold_quit
;
6677 EVENT_INIT (hold_quit
);
6678 hold_quit
.kind
= NO_EVENT
;
6680 /* No need for FIONREAD or fcntl; just say don't wait. */
6681 while (nr
= (*d
->read_socket_hook
) (d
, expected
, &hold_quit
), nr
> 0)
6687 if (nr
== -1) /* Not OK to read input now. */
6691 else if (nr
== -2) /* Non-transient error. */
6693 /* The display device terminated; it should be closed. */
6695 /* Kill Emacs if this was our last display. */
6696 if (! display_list
->next_display
)
6697 /* Formerly simply reported no input, but that
6698 sometimes led to a failure of Emacs to terminate.
6699 SIGHUP seems appropriate if we can't reach the
6701 /* ??? Is it really right to send the signal just to
6702 this process rather than to the whole process
6703 group? Perhaps on systems with FIONREAD Emacs is
6704 alone in its group. */
6705 kill (getpid (), SIGHUP
);
6707 /* XXX Is calling delete_display safe here? It calls Fdelete_frame. */
6708 if (d
->delete_display_hook
)
6709 (*d
->delete_display_hook
) (d
);
6714 if (hold_quit
.kind
!= NO_EVENT
)
6715 kbd_buffer_store_event (&hold_quit
);
6727 /* This is the tty way of reading available input.
6729 Note that each terminal device has its own `struct display' object,
6730 and so this function is called once for each individual termcap
6731 display. The first parameter indicates which device to read from. */
6734 tty_read_avail_input (struct display
*display
,
6736 struct input_event
*hold_quit
)
6738 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
6739 the kbd_buffer can really hold. That may prevent loss
6740 of characters on some systems when input is stuffed at us. */
6741 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
6743 struct tty_display_info
*tty
= display
->display_info
.tty
;
6746 if (display
->type
!= output_termcap
)
6749 /* XXX I think the following code should be moved to separate hook
6750 functions in system-dependent files. */
6753 #else /* not WINDOWSNT */
6755 n_to_read
= dos_keysns ();
6759 cbuf
[0] = dos_keyread ();
6762 #else /* not MSDOS */
6764 if (! tty
->term_initted
) /* In case we get called during bootstrap. */
6768 return 0; /* The terminal is suspended. */
6770 /* Determine how many characters we should *try* to read. */
6772 /* Find out how much input is available. */
6773 if (ioctl (fileno (tty
->input
), FIONREAD
, &n_to_read
) < 0)
6775 if (! noninteractive
)
6776 return -2; /* Close this display. */
6782 if (n_to_read
> sizeof cbuf
)
6783 n_to_read
= sizeof cbuf
;
6784 #else /* no FIONREAD */
6785 #if defined (USG) || defined (DGUX) || defined(CYGWIN)
6786 /* Read some input if available, but don't wait. */
6787 n_to_read
= sizeof cbuf
;
6788 fcntl (fileno (tty
->input
), F_SETFL
, O_NDELAY
);
6794 /* Now read; for one reason or another, this will not block.
6795 NREAD is set to the number of chars read. */
6798 nread
= emacs_read (fileno (tty
->input
), cbuf
, n_to_read
);
6799 /* POSIX infers that processes which are not in the session leader's
6800 process group won't get SIGHUP's at logout time. BSDI adheres to
6801 this part standard and returns -1 from read (0) with errno==EIO
6802 when the control tty is taken away.
6803 Jeffrey Honig <jch@bsdi.com> says this is generally safe. */
6804 if (nread
== -1 && errno
== EIO
)
6805 return -2; /* Close this display. */
6806 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
6807 /* The kernel sometimes fails to deliver SIGHUP for ptys.
6808 This looks incorrect, but it isn't, because _BSD causes
6809 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
6810 and that causes a value other than 0 when there is no input. */
6812 return -2; /* Close this display. */
6816 /* We used to retry the read if it was interrupted.
6817 But this does the wrong thing when O_NDELAY causes
6818 an EAGAIN error. Does anybody know of a situation
6819 where a retry is actually needed? */
6821 nread
< 0 && (errno
== EAGAIN
6835 #if defined (USG) || defined (DGUX) || defined (CYGWIN)
6836 fcntl (fileno (tty
->input
), F_SETFL
, 0);
6837 #endif /* USG or DGUX or CYGWIN */
6838 #endif /* no FIONREAD */
6843 #endif /* not MSDOS */
6844 #endif /* not WINDOWSNT */
6846 for (i
= 0; i
< nread
; i
++)
6848 struct input_event buf
;
6850 buf
.kind
= ASCII_KEYSTROKE_EVENT
;
6852 if (tty
->meta_key
== 1 && (cbuf
[i
] & 0x80))
6853 buf
.modifiers
= meta_modifier
;
6854 if (tty
->meta_key
!= 2)
6858 /* Set the frame corresponding to the active tty. Note that the
6859 value of selected_frame is not reliable here, redisplay tends
6860 to temporarily change it. */
6861 buf
.frame_or_window
= tty
->top_frame
;
6864 kbd_buffer_store_event (&buf
);
6865 /* Don't look at input that follows a C-g too closely.
6866 This reduces lossage due to autorepeat on C-g. */
6867 if (buf
.kind
== ASCII_KEYSTROKE_EVENT
6868 && buf
.code
== quit_char
)
6874 #endif /* not VMS */
6877 handle_async_input ()
6880 extern int select_alarmed
;
6883 interrupt_input_pending
= 0;
6888 nread
= read_avail_input (1);
6889 /* -1 means it's not ok to read the input now.
6890 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
6891 0 means there was no keyboard input available. */
6896 select_alarmed
= 1; /* Force the select emulator back to life */
6901 #ifdef SIGIO /* for entire page */
6902 /* Note SIGIO has been undef'd if FIONREAD is missing. */
6905 input_available_signal (signo
)
6908 /* Must preserve main program's value of errno. */
6909 int old_errno
= errno
;
6910 #if defined (USG) && !defined (POSIX_SIGNALS)
6911 /* USG systems forget handlers when they are used;
6912 must reestablish each time */
6913 signal (signo
, input_available_signal
);
6921 interrupt_input_pending
= 1;
6923 SIGNAL_THREAD_CHECK (signo
);
6926 if (input_available_clear_time
)
6927 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6930 handle_async_input ();
6940 /* Send ourselves a SIGIO.
6942 This function exists so that the UNBLOCK_INPUT macro in
6943 blockinput.h can have some way to take care of input we put off
6944 dealing with, without assuming that every file which uses
6945 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
6947 reinvoke_input_signal ()
6950 handle_async_input ();
6956 static void menu_bar_item
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
, void*));
6957 static Lisp_Object menu_bar_one_keymap_changed_items
;
6959 /* These variables hold the vector under construction within
6960 menu_bar_items and its subroutines, and the current index
6961 for storing into that vector. */
6962 static Lisp_Object menu_bar_items_vector
;
6963 static int menu_bar_items_index
;
6965 /* Return a vector of menu items for a menu bar, appropriate
6966 to the current buffer. Each item has three elements in the vector:
6969 OLD is an old vector we can optionally reuse, or nil. */
6972 menu_bar_items (old
)
6975 /* The number of keymaps we're scanning right now, and the number of
6976 keymaps we have allocated space for. */
6979 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
6980 in the current keymaps, or nil where it is not a prefix. */
6983 Lisp_Object def
, tail
;
6992 struct gcpro gcpro1
;
6994 /* In order to build the menus, we need to call the keymap
6995 accessors. They all call QUIT. But this function is called
6996 during redisplay, during which a quit is fatal. So inhibit
6997 quitting while building the menus.
6998 We do this instead of specbind because (1) errors will clear it anyway
6999 and (2) this avoids risk of specpdl overflow. */
7000 oquit
= Vinhibit_quit
;
7004 menu_bar_items_vector
= old
;
7006 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
7007 menu_bar_items_index
= 0;
7009 GCPRO1 (menu_bar_items_vector
);
7011 /* Build our list of keymaps.
7012 If we recognize a function key and replace its escape sequence in
7013 keybuf with its symbol, or if the sequence starts with a mouse
7014 click and we need to switch buffers, we jump back here to rebuild
7015 the initial keymaps from the current buffer. */
7019 /* Should overriding-terminal-local-map and overriding-local-map apply? */
7020 if (!NILP (Voverriding_local_map_menu_flag
))
7022 /* Yes, use them (if non-nil) as well as the global map. */
7023 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
7025 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
7026 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
7027 if (!NILP (Voverriding_local_map
))
7028 maps
[nmaps
++] = Voverriding_local_map
;
7032 /* No, so use major and minor mode keymaps and keymap property.
7033 Note that menu-bar bindings in the local-map and keymap
7034 properties may not work reliable, as they are only
7035 recognized when the menu-bar (or mode-line) is updated,
7036 which does not normally happen after every command. */
7039 nminor
= current_minor_maps (NULL
, &tmaps
);
7040 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
7042 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
7043 maps
[nmaps
++] = tem
;
7044 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
7046 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
7048 maps
[nmaps
++] = current_global_map
;
7051 /* Look up in each map the dummy prefix key `menu-bar'. */
7055 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
7056 if (!NILP (maps
[mapno
]))
7058 def
= get_keymap (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0, 1),
7062 menu_bar_one_keymap_changed_items
= Qnil
;
7063 map_keymap (def
, menu_bar_item
, Qnil
, NULL
, 1);
7067 /* Move to the end those items that should be at the end. */
7069 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCDR (tail
))
7072 int end
= menu_bar_items_index
;
7074 for (i
= 0; i
< end
; i
+= 4)
7075 if (EQ (XCAR (tail
), XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7077 Lisp_Object tem0
, tem1
, tem2
, tem3
;
7078 /* Move the item at index I to the end,
7079 shifting all the others forward. */
7080 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
7081 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
7082 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7083 tem3
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3];
7085 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7086 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7087 (end
- i
- 4) * sizeof (Lisp_Object
));
7088 XVECTOR (menu_bar_items_vector
)->contents
[end
- 4] = tem0
;
7089 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem1
;
7090 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem2
;
7091 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem3
;
7096 /* Add nil, nil, nil, nil at the end. */
7097 i
= menu_bar_items_index
;
7098 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7101 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7102 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7103 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7104 menu_bar_items_vector
= tem
;
7106 /* Add this item. */
7107 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7108 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7109 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7110 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
7111 menu_bar_items_index
= i
;
7113 Vinhibit_quit
= oquit
;
7115 return menu_bar_items_vector
;
7118 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
7119 If there's already an item for KEY, add this DEF to it. */
7121 Lisp_Object item_properties
;
7124 menu_bar_item (key
, item
, dummy1
, dummy2
)
7125 Lisp_Object key
, item
, dummy1
;
7128 struct gcpro gcpro1
;
7132 if (EQ (item
, Qundefined
))
7134 /* If a map has an explicit `undefined' as definition,
7135 discard any previously made menu bar item. */
7137 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7138 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7140 if (menu_bar_items_index
> i
+ 4)
7141 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
7142 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
7143 (menu_bar_items_index
- i
- 4) * sizeof (Lisp_Object
));
7144 menu_bar_items_index
-= 4;
7148 /* If this keymap has already contributed to this KEY,
7149 don't contribute to it a second time. */
7150 tem
= Fmemq (key
, menu_bar_one_keymap_changed_items
);
7151 if (!NILP (tem
) || NILP (item
))
7154 menu_bar_one_keymap_changed_items
7155 = Fcons (key
, menu_bar_one_keymap_changed_items
);
7157 /* We add to menu_bar_one_keymap_changed_items before doing the
7158 parse_menu_item, so that if it turns out it wasn't a menu item,
7159 it still correctly hides any further menu item. */
7161 i
= parse_menu_item (item
, 0, 1);
7166 item
= XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_DEF
];
7168 /* Find any existing item for this KEY. */
7169 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
7170 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
7173 /* If we did not find this KEY, add it at the end. */
7174 if (i
== menu_bar_items_index
)
7176 /* If vector is too small, get a bigger one. */
7177 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
7180 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
7181 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
7182 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
7183 menu_bar_items_vector
= tem
;
7186 /* Add this item. */
7187 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
7188 XVECTOR (menu_bar_items_vector
)->contents
[i
++]
7189 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
7190 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (item
, Qnil
);
7191 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = make_number (0);
7192 menu_bar_items_index
= i
;
7194 /* We did find an item for this KEY. Add ITEM to its list of maps. */
7198 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
7199 /* If the new and the old items are not both keymaps,
7200 the lookup will only find `item'. */
7201 item
= Fcons (item
, KEYMAPP (item
) && KEYMAPP (XCAR (old
)) ? old
: Qnil
);
7202 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = item
;
7206 /* This is used as the handler when calling menu_item_eval_property. */
7208 menu_item_eval_property_1 (arg
)
7211 /* If we got a quit from within the menu computation,
7212 quit all the way out of it. This takes care of C-] in the debugger. */
7213 if (CONSP (arg
) && EQ (XCAR (arg
), Qquit
))
7214 Fsignal (Qquit
, Qnil
);
7219 /* Evaluate an expression and return the result (or nil if something
7220 went wrong). Used to evaluate dynamic parts of menu items. */
7222 menu_item_eval_property (sexpr
)
7225 int count
= SPECPDL_INDEX ();
7227 specbind (Qinhibit_redisplay
, Qt
);
7228 val
= internal_condition_case_1 (Feval
, sexpr
, Qerror
,
7229 menu_item_eval_property_1
);
7230 return unbind_to (count
, val
);
7233 /* This function parses a menu item and leaves the result in the
7234 vector item_properties.
7235 ITEM is a key binding, a possible menu item.
7236 If NOTREAL is nonzero, only check for equivalent key bindings, don't
7237 evaluate dynamic expressions in the menu item.
7238 INMENUBAR is > 0 when this is considered for an entry in a menu bar
7240 INMENUBAR is < 0 when this is considered for an entry in a keyboard menu.
7241 parse_menu_item returns true if the item is a menu item and false
7245 parse_menu_item (item
, notreal
, inmenubar
)
7247 int notreal
, inmenubar
;
7249 Lisp_Object def
, tem
, item_string
, start
;
7250 Lisp_Object cachelist
;
7252 Lisp_Object keyhint
;
7263 /* Create item_properties vector if necessary. */
7264 if (NILP (item_properties
))
7266 = Fmake_vector (make_number (ITEM_PROPERTY_ENABLE
+ 1), Qnil
);
7268 /* Initialize optional entries. */
7269 for (i
= ITEM_PROPERTY_DEF
; i
< ITEM_PROPERTY_ENABLE
; i
++)
7270 AREF (item_properties
, i
) = Qnil
;
7271 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = Qt
;
7273 /* Save the item here to protect it from GC. */
7274 AREF (item_properties
, ITEM_PROPERTY_ITEM
) = item
;
7276 item_string
= XCAR (item
);
7280 if (STRINGP (item_string
))
7282 /* Old format menu item. */
7283 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7285 /* Maybe help string. */
7286 if (CONSP (item
) && STRINGP (XCAR (item
)))
7288 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7293 /* Maybe key binding cache. */
7294 if (CONSP (item
) && CONSP (XCAR (item
))
7295 && (NILP (XCAR (XCAR (item
)))
7296 || VECTORP (XCAR (XCAR (item
)))))
7298 cachelist
= XCAR (item
);
7302 /* This is the real definition--the function to run. */
7303 AREF (item_properties
, ITEM_PROPERTY_DEF
) = item
;
7305 /* Get enable property, if any. */
7308 tem
= Fget (item
, Qmenu_enable
);
7310 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7313 else if (EQ (item_string
, Qmenu_item
) && CONSP (item
))
7315 /* New format menu item. */
7316 AREF (item_properties
, ITEM_PROPERTY_NAME
) = XCAR (item
);
7317 start
= XCDR (item
);
7320 /* We have a real binding. */
7321 AREF (item_properties
, ITEM_PROPERTY_DEF
) = XCAR (start
);
7323 item
= XCDR (start
);
7324 /* Is there a cache list with key equivalences. */
7325 if (CONSP (item
) && CONSP (XCAR (item
)))
7327 cachelist
= XCAR (item
);
7331 /* Parse properties. */
7332 while (CONSP (item
) && CONSP (XCDR (item
)))
7337 if (EQ (tem
, QCenable
))
7338 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = XCAR (item
);
7339 else if (EQ (tem
, QCvisible
) && !notreal
)
7341 /* If got a visible property and that evaluates to nil
7342 then ignore this item. */
7343 tem
= menu_item_eval_property (XCAR (item
));
7347 else if (EQ (tem
, QChelp
))
7348 AREF (item_properties
, ITEM_PROPERTY_HELP
) = XCAR (item
);
7349 else if (EQ (tem
, QCfilter
))
7351 else if (EQ (tem
, QCkey_sequence
))
7354 if (NILP (cachelist
)
7355 && (SYMBOLP (tem
) || STRINGP (tem
) || VECTORP (tem
)))
7356 /* Be GC protected. Set keyhint to item instead of tem. */
7359 else if (EQ (tem
, QCkeys
))
7362 if (CONSP (tem
) || (STRINGP (tem
) && NILP (cachelist
)))
7363 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7365 else if (EQ (tem
, QCbutton
) && CONSP (XCAR (item
)))
7370 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7372 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7374 AREF (item_properties
, ITEM_PROPERTY_TYPE
)
7381 else if (inmenubar
|| !NILP (start
))
7385 return 0; /* not a menu item */
7387 /* If item string is not a string, evaluate it to get string.
7388 If we don't get a string, skip this item. */
7389 item_string
= AREF (item_properties
, ITEM_PROPERTY_NAME
);
7390 if (!(STRINGP (item_string
) || notreal
))
7392 item_string
= menu_item_eval_property (item_string
);
7393 if (!STRINGP (item_string
))
7395 AREF (item_properties
, ITEM_PROPERTY_NAME
) = item_string
;
7398 /* If got a filter apply it on definition. */
7399 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7402 def
= menu_item_eval_property (list2 (XCAR (filter
),
7403 list2 (Qquote
, def
)));
7405 AREF (item_properties
, ITEM_PROPERTY_DEF
) = def
;
7408 /* Enable or disable selection of item. */
7409 tem
= AREF (item_properties
, ITEM_PROPERTY_ENABLE
);
7415 tem
= menu_item_eval_property (tem
);
7416 if (inmenubar
&& NILP (tem
))
7417 return 0; /* Ignore disabled items in menu bar. */
7418 AREF (item_properties
, ITEM_PROPERTY_ENABLE
) = tem
;
7421 /* If we got no definition, this item is just unselectable text which
7422 is OK in a submenu but not in the menubar. */
7424 return (inmenubar
? 0 : 1);
7426 /* See if this is a separate pane or a submenu. */
7427 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7428 tem
= get_keymap (def
, 0, 1);
7429 /* For a subkeymap, just record its details and exit. */
7432 AREF (item_properties
, ITEM_PROPERTY_MAP
) = tem
;
7433 AREF (item_properties
, ITEM_PROPERTY_DEF
) = tem
;
7437 /* At the top level in the menu bar, do likewise for commands also.
7438 The menu bar does not display equivalent key bindings anyway.
7439 ITEM_PROPERTY_DEF is already set up properly. */
7443 /* This is a command. See if there is an equivalent key binding. */
7444 if (NILP (cachelist
))
7446 /* We have to create a cachelist. */
7447 CHECK_IMPURE (start
);
7448 XSETCDR (start
, Fcons (Fcons (Qnil
, Qnil
), XCDR (start
)));
7449 cachelist
= XCAR (XCDR (start
));
7451 tem
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7452 if (!NILP (keyhint
))
7454 XSETCAR (cachelist
, XCAR (keyhint
));
7457 else if (STRINGP (tem
))
7459 XSETCDR (cachelist
, Fsubstitute_command_keys (tem
));
7460 XSETCAR (cachelist
, Qt
);
7464 tem
= XCAR (cachelist
);
7471 tem
= Fkey_binding (tem
, Qnil
, Qnil
);
7473 prefix
= AREF (item_properties
, ITEM_PROPERTY_KEYEQ
);
7476 def
= XCAR (prefix
);
7477 prefix
= XCDR (prefix
);
7480 def
= AREF (item_properties
, ITEM_PROPERTY_DEF
);
7482 if (!update_menu_bindings
)
7484 else if (NILP (XCAR (cachelist
))) /* Have no saved key. */
7486 if (newcache
/* Always check first time. */
7487 /* Should we check everything when precomputing key
7489 /* If something had no key binding before, don't recheck it
7490 because that is too slow--except if we have a list of
7491 rebound commands in Vdefine_key_rebound_commands, do
7492 recheck any command that appears in that list. */
7493 || (CONSP (Vdefine_key_rebound_commands
)
7494 && !NILP (Fmemq (def
, Vdefine_key_rebound_commands
))))
7497 /* We had a saved key. Is it still bound to the command? */
7500 /* If the command is an alias for another
7501 (such as lmenu.el set it up), check if the
7502 original command matches the cached command. */
7503 && !(SYMBOLP (def
) && EQ (tem
, XSYMBOL (def
)->function
))))
7504 chkcache
= 1; /* Need to recompute key binding. */
7508 /* Recompute equivalent key binding. If the command is an alias
7509 for another (such as lmenu.el set it up), see if the original
7510 command name has equivalent keys. Otherwise look up the
7511 specified command itself. We don't try both, because that
7512 makes lmenu menus slow. */
7514 && SYMBOLP (XSYMBOL (def
)->function
)
7515 && ! NILP (Fget (def
, Qmenu_alias
)))
7516 def
= XSYMBOL (def
)->function
;
7517 tem
= Fwhere_is_internal (def
, Qnil
, Qt
, Qnil
, Qt
);
7518 XSETCAR (cachelist
, tem
);
7521 XSETCDR (cachelist
, Qnil
);
7525 else if (!NILP (keyhint
) && !NILP (XCAR (cachelist
)))
7527 tem
= XCAR (cachelist
);
7531 newcache
= chkcache
;
7534 tem
= Fkey_description (tem
, Qnil
);
7537 if (STRINGP (XCAR (prefix
)))
7538 tem
= concat2 (XCAR (prefix
), tem
);
7539 if (STRINGP (XCDR (prefix
)))
7540 tem
= concat2 (tem
, XCDR (prefix
));
7542 XSETCDR (cachelist
, tem
);
7546 tem
= XCDR (cachelist
);
7547 if (newcache
&& !NILP (tem
))
7549 tem
= concat3 (build_string (" ("), tem
, build_string (")"));
7550 XSETCDR (cachelist
, tem
);
7553 /* If we only want to precompute equivalent key bindings, stop here. */
7557 /* If we have an equivalent key binding, use that. */
7558 AREF (item_properties
, ITEM_PROPERTY_KEYEQ
) = tem
;
7560 /* Include this when menu help is implemented.
7561 tem = XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP];
7562 if (!(NILP (tem) || STRINGP (tem)))
7564 tem = menu_item_eval_property (tem);
7567 XVECTOR (item_properties)->contents[ITEM_PROPERTY_HELP] = tem;
7571 /* Handle radio buttons or toggle boxes. */
7572 tem
= AREF (item_properties
, ITEM_PROPERTY_SELECTED
);
7574 AREF (item_properties
, ITEM_PROPERTY_SELECTED
)
7575 = menu_item_eval_property (tem
);
7582 /***********************************************************************
7584 ***********************************************************************/
7586 /* A vector holding tool bar items while they are parsed in function
7587 tool_bar_items. Each item occupies TOOL_BAR_ITEM_NSCLOTS elements
7590 static Lisp_Object tool_bar_items_vector
;
7592 /* A vector holding the result of parse_tool_bar_item. Layout is like
7593 the one for a single item in tool_bar_items_vector. */
7595 static Lisp_Object tool_bar_item_properties
;
7597 /* Next free index in tool_bar_items_vector. */
7599 static int ntool_bar_items
;
7601 /* The symbols `tool-bar', and `:image'. */
7603 extern Lisp_Object Qtool_bar
;
7604 Lisp_Object QCimage
;
7606 /* Function prototypes. */
7608 static void init_tool_bar_items
P_ ((Lisp_Object
));
7609 static void process_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7610 static int parse_tool_bar_item
P_ ((Lisp_Object
, Lisp_Object
));
7611 static void append_tool_bar_item
P_ ((void));
7614 /* Return a vector of tool bar items for keymaps currently in effect.
7615 Reuse vector REUSE if non-nil. Return in *NITEMS the number of
7616 tool bar items found. */
7619 tool_bar_items (reuse
, nitems
)
7630 /* In order to build the menus, we need to call the keymap
7631 accessors. They all call QUIT. But this function is called
7632 during redisplay, during which a quit is fatal. So inhibit
7633 quitting while building the menus. We do this instead of
7634 specbind because (1) errors will clear it anyway and (2) this
7635 avoids risk of specpdl overflow. */
7636 oquit
= Vinhibit_quit
;
7639 /* Initialize tool_bar_items_vector and protect it from GC. */
7640 init_tool_bar_items (reuse
);
7642 /* Build list of keymaps in maps. Set nmaps to the number of maps
7645 /* Should overriding-terminal-local-map and overriding-local-map apply? */
7646 if (!NILP (Voverriding_local_map_menu_flag
))
7648 /* Yes, use them (if non-nil) as well as the global map. */
7649 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
7651 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
7652 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
7653 if (!NILP (Voverriding_local_map
))
7654 maps
[nmaps
++] = Voverriding_local_map
;
7658 /* No, so use major and minor mode keymaps and keymap property.
7659 Note that tool-bar bindings in the local-map and keymap
7660 properties may not work reliable, as they are only
7661 recognized when the tool-bar (or mode-line) is updated,
7662 which does not normally happen after every command. */
7665 nminor
= current_minor_maps (NULL
, &tmaps
);
7666 maps
= (Lisp_Object
*) alloca ((nminor
+ 3) * sizeof (maps
[0]));
7668 if (tem
= get_local_map (PT
, current_buffer
, Qkeymap
), !NILP (tem
))
7669 maps
[nmaps
++] = tem
;
7670 bcopy (tmaps
, (void *) (maps
+ nmaps
), nminor
* sizeof (maps
[0]));
7672 maps
[nmaps
++] = get_local_map (PT
, current_buffer
, Qlocal_map
);
7675 /* Add global keymap at the end. */
7676 maps
[nmaps
++] = current_global_map
;
7678 /* Process maps in reverse order and look up in each map the prefix
7680 for (i
= nmaps
- 1; i
>= 0; --i
)
7681 if (!NILP (maps
[i
]))
7685 keymap
= get_keymap (access_keymap (maps
[i
], Qtool_bar
, 1, 0, 1), 0, 1);
7690 /* KEYMAP is a list `(keymap (KEY . BINDING) ...)'. */
7691 for (tail
= keymap
; CONSP (tail
); tail
= XCDR (tail
))
7693 Lisp_Object keydef
= XCAR (tail
);
7695 process_tool_bar_item (XCAR (keydef
), XCDR (keydef
));
7700 Vinhibit_quit
= oquit
;
7701 *nitems
= ntool_bar_items
/ TOOL_BAR_ITEM_NSLOTS
;
7702 return tool_bar_items_vector
;
7706 /* Process the definition of KEY which is DEF. */
7709 process_tool_bar_item (key
, def
)
7710 Lisp_Object key
, def
;
7713 extern Lisp_Object Qundefined
;
7714 struct gcpro gcpro1
, gcpro2
;
7716 /* Protect KEY and DEF from GC because parse_tool_bar_item may call
7720 if (EQ (def
, Qundefined
))
7722 /* If a map has an explicit `undefined' as definition,
7723 discard any previously made item. */
7724 for (i
= 0; i
< ntool_bar_items
; i
+= TOOL_BAR_ITEM_NSLOTS
)
7726 Lisp_Object
*v
= XVECTOR (tool_bar_items_vector
)->contents
+ i
;
7728 if (EQ (key
, v
[TOOL_BAR_ITEM_KEY
]))
7730 if (ntool_bar_items
> i
+ TOOL_BAR_ITEM_NSLOTS
)
7731 bcopy (v
+ TOOL_BAR_ITEM_NSLOTS
, v
,
7732 ((ntool_bar_items
- i
- TOOL_BAR_ITEM_NSLOTS
)
7733 * sizeof (Lisp_Object
)));
7734 ntool_bar_items
-= TOOL_BAR_ITEM_NSLOTS
;
7739 else if (parse_tool_bar_item (key
, def
))
7740 /* Append a new tool bar item to tool_bar_items_vector. Accept
7741 more than one definition for the same key. */
7742 append_tool_bar_item ();
7748 /* Parse a tool bar item specification ITEM for key KEY and return the
7749 result in tool_bar_item_properties. Value is zero if ITEM is
7752 ITEM is a list `(menu-item CAPTION BINDING PROPS...)'.
7754 CAPTION is the caption of the item, If it's not a string, it is
7755 evaluated to get a string.
7757 BINDING is the tool bar item's binding. Tool-bar items with keymaps
7758 as binding are currently ignored.
7760 The following properties are recognized:
7764 FORM is evaluated and specifies whether the tool bar item is
7765 enabled or disabled.
7769 FORM is evaluated and specifies whether the tool bar item is visible.
7771 - `:filter FUNCTION'
7773 FUNCTION is invoked with one parameter `(quote BINDING)'. Its
7774 result is stored as the new binding.
7776 - `:button (TYPE SELECTED)'
7778 TYPE must be one of `:radio' or `:toggle'. SELECTED is evaluated
7779 and specifies whether the button is selected (pressed) or not.
7783 IMAGES is either a single image specification or a vector of four
7784 image specifications. See enum tool_bar_item_images.
7786 - `:help HELP-STRING'.
7788 Gives a help string to display for the tool bar item. */
7791 parse_tool_bar_item (key
, item
)
7792 Lisp_Object key
, item
;
7794 /* Access slot with index IDX of vector tool_bar_item_properties. */
7795 #define PROP(IDX) XVECTOR (tool_bar_item_properties)->contents[IDX]
7797 Lisp_Object filter
= Qnil
;
7798 Lisp_Object caption
;
7801 /* Defininition looks like `(menu-item CAPTION BINDING PROPS...)'.
7802 Rule out items that aren't lists, don't start with
7803 `menu-item' or whose rest following `tool-bar-item' is not a
7806 || !EQ (XCAR (item
), Qmenu_item
)
7807 || (item
= XCDR (item
),
7811 /* Create tool_bar_item_properties vector if necessary. Reset it to
7813 if (VECTORP (tool_bar_item_properties
))
7815 for (i
= 0; i
< TOOL_BAR_ITEM_NSLOTS
; ++i
)
7819 tool_bar_item_properties
7820 = Fmake_vector (make_number (TOOL_BAR_ITEM_NSLOTS
), Qnil
);
7823 PROP (TOOL_BAR_ITEM_KEY
) = key
;
7824 PROP (TOOL_BAR_ITEM_ENABLED_P
) = Qt
;
7826 /* Get the caption of the item. If the caption is not a string,
7827 evaluate it to get a string. If we don't get a string, skip this
7829 caption
= XCAR (item
);
7830 if (!STRINGP (caption
))
7832 caption
= menu_item_eval_property (caption
);
7833 if (!STRINGP (caption
))
7836 PROP (TOOL_BAR_ITEM_CAPTION
) = caption
;
7838 /* Give up if rest following the caption is not a list. */
7843 /* Store the binding. */
7844 PROP (TOOL_BAR_ITEM_BINDING
) = XCAR (item
);
7847 /* Ignore cached key binding, if any. */
7848 if (CONSP (item
) && CONSP (XCAR (item
)))
7851 /* Process the rest of the properties. */
7852 for (; CONSP (item
) && CONSP (XCDR (item
)); item
= XCDR (XCDR (item
)))
7854 Lisp_Object key
, value
;
7857 value
= XCAR (XCDR (item
));
7859 if (EQ (key
, QCenable
))
7860 /* `:enable FORM'. */
7861 PROP (TOOL_BAR_ITEM_ENABLED_P
) = value
;
7862 else if (EQ (key
, QCvisible
))
7864 /* `:visible FORM'. If got a visible property and that
7865 evaluates to nil then ignore this item. */
7866 if (NILP (menu_item_eval_property (value
)))
7869 else if (EQ (key
, QChelp
))
7870 /* `:help HELP-STRING'. */
7871 PROP (TOOL_BAR_ITEM_HELP
) = value
;
7872 else if (EQ (key
, QCfilter
))
7873 /* ':filter FORM'. */
7875 else if (EQ (key
, QCbutton
) && CONSP (value
))
7877 /* `:button (TYPE . SELECTED)'. */
7878 Lisp_Object type
, selected
;
7880 type
= XCAR (value
);
7881 selected
= XCDR (value
);
7882 if (EQ (type
, QCtoggle
) || EQ (type
, QCradio
))
7884 PROP (TOOL_BAR_ITEM_SELECTED_P
) = selected
;
7885 PROP (TOOL_BAR_ITEM_TYPE
) = type
;
7888 else if (EQ (key
, QCimage
)
7890 || (VECTORP (value
) && XVECTOR (value
)->size
== 4)))
7891 /* Value is either a single image specification or a vector
7892 of 4 such specifications for the different button states. */
7893 PROP (TOOL_BAR_ITEM_IMAGES
) = value
;
7896 /* If got a filter apply it on binding. */
7898 PROP (TOOL_BAR_ITEM_BINDING
)
7899 = menu_item_eval_property (list2 (filter
,
7901 PROP (TOOL_BAR_ITEM_BINDING
))));
7903 /* See if the binding is a keymap. Give up if it is. */
7904 if (CONSP (get_keymap (PROP (TOOL_BAR_ITEM_BINDING
), 0, 1)))
7907 /* Enable or disable selection of item. */
7908 if (!EQ (PROP (TOOL_BAR_ITEM_ENABLED_P
), Qt
))
7909 PROP (TOOL_BAR_ITEM_ENABLED_P
)
7910 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_ENABLED_P
));
7912 /* Handle radio buttons or toggle boxes. */
7913 if (!NILP (PROP (TOOL_BAR_ITEM_SELECTED_P
)))
7914 PROP (TOOL_BAR_ITEM_SELECTED_P
)
7915 = menu_item_eval_property (PROP (TOOL_BAR_ITEM_SELECTED_P
));
7923 /* Initialize tool_bar_items_vector. REUSE, if non-nil, is a vector
7924 that can be reused. */
7927 init_tool_bar_items (reuse
)
7930 if (VECTORP (reuse
))
7931 tool_bar_items_vector
= reuse
;
7933 tool_bar_items_vector
= Fmake_vector (make_number (64), Qnil
);
7934 ntool_bar_items
= 0;
7938 /* Append parsed tool bar item properties from
7939 tool_bar_item_properties */
7942 append_tool_bar_item ()
7944 Lisp_Object
*to
, *from
;
7946 /* Enlarge tool_bar_items_vector if necessary. */
7947 if (ntool_bar_items
+ TOOL_BAR_ITEM_NSLOTS
7948 >= XVECTOR (tool_bar_items_vector
)->size
)
7950 Lisp_Object new_vector
;
7951 int old_size
= XVECTOR (tool_bar_items_vector
)->size
;
7953 new_vector
= Fmake_vector (make_number (2 * old_size
), Qnil
);
7954 bcopy (XVECTOR (tool_bar_items_vector
)->contents
,
7955 XVECTOR (new_vector
)->contents
,
7956 old_size
* sizeof (Lisp_Object
));
7957 tool_bar_items_vector
= new_vector
;
7960 /* Append entries from tool_bar_item_properties to the end of
7961 tool_bar_items_vector. */
7962 to
= XVECTOR (tool_bar_items_vector
)->contents
+ ntool_bar_items
;
7963 from
= XVECTOR (tool_bar_item_properties
)->contents
;
7964 bcopy (from
, to
, TOOL_BAR_ITEM_NSLOTS
* sizeof *to
);
7965 ntool_bar_items
+= TOOL_BAR_ITEM_NSLOTS
;
7972 /* Read a character using menus based on maps in the array MAPS.
7973 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
7974 Return t if we displayed a menu but the user rejected it.
7976 PREV_EVENT is the previous input event, or nil if we are reading
7977 the first event of a key sequence.
7979 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
7980 if we used a mouse menu to read the input, or zero otherwise. If
7981 USED_MOUSE_MENU is null, we don't dereference it.
7983 The prompting is done based on the prompt-string of the map
7984 and the strings associated with various map elements.
7986 This can be done with X menus or with menus put in the minibuf.
7987 These are done in different ways, depending on how the input will be read.
7988 Menus using X are done after auto-saving in read-char, getting the input
7989 event from Fx_popup_menu; menus using the minibuf use read_char recursively
7990 and do auto-saving in the inner call of read_char. */
7993 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
7996 Lisp_Object prev_event
;
7997 int *used_mouse_menu
;
8000 register Lisp_Object name
= Qnil
;
8002 if (used_mouse_menu
)
8003 *used_mouse_menu
= 0;
8005 /* Use local over global Menu maps */
8007 if (! menu_prompting
)
8010 /* Optionally disregard all but the global map. */
8011 if (inhibit_local_menu_bar_menus
)
8013 maps
+= (nmaps
- 1);
8017 /* Get the menu name from the first map that has one (a prompt string). */
8018 for (mapno
= 0; mapno
< nmaps
; mapno
++)
8020 name
= Fkeymap_prompt (maps
[mapno
]);
8025 /* If we don't have any menus, just read a character normally. */
8026 if (!STRINGP (name
))
8030 /* If we got to this point via a mouse click,
8031 use a real menu for mouse selection. */
8032 if (EVENT_HAS_PARAMETERS (prev_event
)
8033 && !EQ (XCAR (prev_event
), Qmenu_bar
)
8034 && !EQ (XCAR (prev_event
), Qtool_bar
))
8036 /* Display the menu and get the selection. */
8037 Lisp_Object
*realmaps
8038 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
8042 /* Use the maps that are not nil. */
8043 for (mapno
= 0; mapno
< nmaps
; mapno
++)
8044 if (!NILP (maps
[mapno
]))
8045 realmaps
[nmaps1
++] = maps
[mapno
];
8047 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
8052 record_menu_key (XCAR (value
));
8054 /* If we got multiple events, unread all but
8056 There is no way to prevent those unread events
8057 from showing up later in last_nonmenu_event.
8058 So turn symbol and integer events into lists,
8059 to indicate that they came from a mouse menu,
8060 so that when present in last_nonmenu_event
8061 they won't confuse things. */
8062 for (tem
= XCDR (value
); !NILP (tem
); tem
= XCDR (tem
))
8064 record_menu_key (XCAR (tem
));
8065 if (SYMBOLP (XCAR (tem
))
8066 || INTEGERP (XCAR (tem
)))
8067 XSETCAR (tem
, Fcons (XCAR (tem
), Qdisabled
));
8070 /* If we got more than one event, put all but the first
8071 onto this list to be read later.
8072 Return just the first event now. */
8073 Vunread_command_events
8074 = nconc2 (XCDR (value
), Vunread_command_events
);
8075 value
= XCAR (value
);
8077 else if (NILP (value
))
8079 if (used_mouse_menu
)
8080 *used_mouse_menu
= 1;
8083 #endif /* HAVE_MENUS */
8087 /* Buffer in use so far for the minibuf prompts for menu keymaps.
8088 We make this bigger when necessary, and never free it. */
8089 static char *read_char_minibuf_menu_text
;
8090 /* Size of that buffer. */
8091 static int read_char_minibuf_menu_width
;
8094 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
8100 register Lisp_Object name
;
8102 /* FIXME: Use the minibuffer's frame width. */
8103 int width
= FRAME_COLS (SELECTED_FRAME ()) - 4;
8106 Lisp_Object rest
, vector
;
8112 if (! menu_prompting
)
8115 /* Make sure we have a big enough buffer for the menu text. */
8116 if (read_char_minibuf_menu_text
== 0)
8118 read_char_minibuf_menu_width
= width
+ 4;
8119 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
8121 else if (width
+ 4 > read_char_minibuf_menu_width
)
8123 read_char_minibuf_menu_width
= width
+ 4;
8124 read_char_minibuf_menu_text
8125 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
8127 menu
= read_char_minibuf_menu_text
;
8129 /* Get the menu name from the first map that has one (a prompt string). */
8130 for (mapno
= 0; mapno
< nmaps
; mapno
++)
8132 name
= Fkeymap_prompt (maps
[mapno
]);
8137 /* If we don't have any menus, just read a character normally. */
8138 if (!STRINGP (name
))
8141 /* Prompt string always starts with map's prompt, and a space. */
8142 strcpy (menu
, SDATA (name
));
8143 nlength
= SBYTES (name
);
8144 menu
[nlength
++] = ':';
8145 menu
[nlength
++] = ' ';
8148 /* Start prompting at start of first map. */
8152 /* Present the documented bindings, a line at a time. */
8159 Lisp_Object orig_defn_macro
;
8161 /* Loop over elements of map. */
8166 /* If reached end of map, start at beginning of next map. */
8170 /* At end of last map, wrap around to first map if just starting,
8171 or end this line if already have something on it. */
8175 if (notfirst
|| nobindings
) break;
8180 /* Look at the next element of the map. */
8182 elt
= XVECTOR (vector
)->contents
[idx
];
8184 elt
= Fcar_safe (rest
);
8186 if (idx
< 0 && VECTORP (elt
))
8188 /* If we found a dense table in the keymap,
8189 advanced past it, but start scanning its contents. */
8190 rest
= Fcdr_safe (rest
);
8196 /* An ordinary element. */
8197 Lisp_Object event
, tem
;
8201 event
= Fcar_safe (elt
); /* alist */
8202 elt
= Fcdr_safe (elt
);
8206 XSETINT (event
, idx
); /* vector */
8209 /* Ignore the element if it has no prompt string. */
8210 if (INTEGERP (event
) && parse_menu_item (elt
, 0, -1))
8212 /* 1 if the char to type matches the string. */
8214 Lisp_Object upcased_event
, downcased_event
;
8215 Lisp_Object desc
= Qnil
;
8217 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_NAME
];
8219 upcased_event
= Fupcase (event
);
8220 downcased_event
= Fdowncase (event
);
8221 char_matches
= (XINT (upcased_event
) == SREF (s
, 0)
8222 || XINT (downcased_event
) == SREF (s
, 0));
8224 desc
= Fsingle_key_description (event
, Qnil
);
8226 #if 0 /* It is redundant to list the equivalent key bindings because
8227 the prefix is what the user has already typed. */
8229 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_KEYEQ
];
8231 /* Insert equivalent keybinding. */
8232 s
= concat2 (s
, tem
);
8235 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_TYPE
];
8236 if (EQ (tem
, QCradio
) || EQ (tem
, QCtoggle
))
8238 /* Insert button prefix. */
8239 Lisp_Object selected
8240 = XVECTOR (item_properties
)->contents
[ITEM_PROPERTY_SELECTED
];
8241 if (EQ (tem
, QCradio
))
8242 tem
= build_string (NILP (selected
) ? "(*) " : "( ) ");
8244 tem
= build_string (NILP (selected
) ? "[X] " : "[ ] ");
8245 s
= concat2 (tem
, s
);
8249 /* If we have room for the prompt string, add it to this line.
8250 If this is the first on the line, always add it. */
8251 if ((SCHARS (s
) + i
+ 2
8252 + (char_matches
? 0 : SCHARS (desc
) + 3))
8258 /* Punctuate between strings. */
8261 strcpy (menu
+ i
, ", ");
8267 /* If the char to type doesn't match the string's
8268 first char, explicitly show what char to type. */
8271 /* Add as much of string as fits. */
8272 thiswidth
= SCHARS (desc
);
8273 if (thiswidth
+ i
> width
)
8274 thiswidth
= width
- i
;
8275 bcopy (SDATA (desc
), menu
+ i
, thiswidth
);
8277 strcpy (menu
+ i
, " = ");
8281 /* Add as much of string as fits. */
8282 thiswidth
= SCHARS (s
);
8283 if (thiswidth
+ i
> width
)
8284 thiswidth
= width
- i
;
8285 bcopy (SDATA (s
), menu
+ i
, thiswidth
);
8291 /* If this element does not fit, end the line now,
8292 and save the element for the next line. */
8293 strcpy (menu
+ i
, "...");
8298 /* Move past this element. */
8299 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
8300 /* Handle reaching end of dense table. */
8305 rest
= Fcdr_safe (rest
);
8309 /* Prompt with that and read response. */
8310 message2_nolog (menu
, strlen (menu
),
8311 ! NILP (current_buffer
->enable_multibyte_characters
));
8313 /* Make believe its not a keyboard macro in case the help char
8314 is pressed. Help characters are not recorded because menu prompting
8315 is not used on replay.
8317 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
8318 current_kboard
->defining_kbd_macro
= Qnil
;
8320 obj
= read_char (commandflag
, 0, 0, Qt
, 0);
8321 while (BUFFERP (obj
));
8322 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
8324 if (!INTEGERP (obj
))
8329 if (! EQ (obj
, menu_prompt_more_char
)
8330 && (!INTEGERP (menu_prompt_more_char
)
8331 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
8333 if (!NILP (current_kboard
->defining_kbd_macro
))
8334 store_kbd_macro_char (obj
);
8337 /* Help char - go round again */
8341 /* Reading key sequences. */
8343 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
8344 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
8345 keymap, or nil otherwise. Return the index of the first keymap in
8346 which KEY has any binding, or NMAPS if no map has a binding.
8348 If KEY is a meta ASCII character, treat it like meta-prefix-char
8349 followed by the corresponding non-meta character. Keymaps in
8350 CURRENT with non-prefix bindings for meta-prefix-char become nil in
8353 If KEY has no bindings in any of the CURRENT maps, NEXT is left
8356 NEXT may be the same array as CURRENT. */
8359 follow_key (key
, nmaps
, current
, defs
, next
)
8361 Lisp_Object
*current
, *defs
, *next
;
8364 int i
, first_binding
;
8366 first_binding
= nmaps
;
8367 for (i
= nmaps
- 1; i
>= 0; i
--)
8369 if (! NILP (current
[i
]))
8371 defs
[i
] = access_keymap (current
[i
], key
, 1, 0, 1);
8372 if (! NILP (defs
[i
]))
8379 /* Given the set of bindings we've found, produce the next set of maps. */
8380 if (first_binding
< nmaps
)
8381 for (i
= 0; i
< nmaps
; i
++)
8382 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap (defs
[i
], 0, 1);
8384 return first_binding
;
8387 /* Structure used to keep track of partial application of key remapping
8388 such as Vfunction_key_map and Vkey_translation_map. */
8389 typedef struct keyremap
8391 Lisp_Object map
, parent
;
8395 /* Lookup KEY in MAP.
8396 MAP is a keymap mapping keys to key vectors or functions.
8397 If the mapping is a function and DO_FUNCTION is non-zero, then
8398 the function is called with PROMPT as parameter and its return
8399 value is used as the return value of this function (after checking
8400 that it is indeed a vector). */
8403 access_keymap_keyremap (map
, key
, prompt
, do_funcall
)
8404 Lisp_Object map
, key
, prompt
;
8409 next
= access_keymap (map
, key
, 1, 0, 1);
8411 /* Handle symbol with autoload definition. */
8412 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8413 && CONSP (XSYMBOL (next
)->function
)
8414 && EQ (XCAR (XSYMBOL (next
)->function
), Qautoload
))
8415 do_autoload (XSYMBOL (next
)->function
, next
);
8417 /* Handle a symbol whose function definition is a keymap
8419 if (SYMBOLP (next
) && !NILP (Ffboundp (next
))
8420 && (!NILP (Farrayp (XSYMBOL (next
)->function
))
8421 || KEYMAPP (XSYMBOL (next
)->function
)))
8422 next
= XSYMBOL (next
)->function
;
8424 /* If the keymap gives a function, not an
8425 array, then call the function with one arg and use
8426 its value instead. */
8427 if (SYMBOLP (next
) && !NILP (Ffboundp (next
)) && do_funcall
)
8432 next
= call1 (next
, prompt
);
8433 /* If the function returned something invalid,
8434 barf--don't ignore it.
8435 (To ignore it safely, we would need to gcpro a bunch of
8436 other variables.) */
8437 if (! (VECTORP (next
) || STRINGP (next
)))
8438 error ("Function %s returns invalid key sequence", tem
);
8443 /* Do one step of the key remapping used for function-key-map and
8444 key-translation-map:
8445 KEYBUF is the buffer holding the input events.
8446 BUFSIZE is its maximum size.
8447 FKEY is a pointer to the keyremap structure to use.
8448 INPUT is the index of the last element in KEYBUF.
8449 DOIT if non-zero says that the remapping can actually take place.
8450 DIFF is used to return the number of keys added/removed by the remapping.
8451 PARENT is the root of the keymap.
8452 PROMPT is the prompt to use if the remapping happens through a function.
8453 The return value is non-zero if the remapping actually took place. */
8456 keyremap_step (keybuf
, bufsize
, fkey
, input
, doit
, diff
, prompt
)
8457 Lisp_Object
*keybuf
, prompt
;
8459 int input
, doit
, *diff
, bufsize
;
8461 Lisp_Object next
, key
;
8463 key
= keybuf
[fkey
->end
++];
8464 next
= access_keymap_keyremap (fkey
->map
, key
, prompt
, doit
);
8466 /* If keybuf[fkey->start..fkey->end] is bound in the
8467 map and we're in a position to do the key remapping, replace it with
8468 the binding and restart with fkey->start at the end. */
8469 if ((VECTORP (next
) || STRINGP (next
)) && doit
)
8471 int len
= XFASTINT (Flength (next
));
8474 *diff
= len
- (fkey
->end
- fkey
->start
);
8476 if (input
+ *diff
>= bufsize
)
8477 error ("Key sequence too long");
8479 /* Shift the keys that follow fkey->end. */
8481 for (i
= fkey
->end
; i
< input
; i
++)
8482 keybuf
[i
+ *diff
] = keybuf
[i
];
8484 for (i
= input
- 1; i
>= fkey
->end
; i
--)
8485 keybuf
[i
+ *diff
] = keybuf
[i
];
8486 /* Overwrite the old keys with the new ones. */
8487 for (i
= 0; i
< len
; i
++)
8488 keybuf
[fkey
->start
+ i
]
8489 = Faref (next
, make_number (i
));
8491 fkey
->start
= fkey
->end
+= *diff
;
8492 fkey
->map
= fkey
->parent
;
8497 fkey
->map
= get_keymap (next
, 0, 1);
8499 /* If we no longer have a bound suffix, try a new position for
8501 if (!CONSP (fkey
->map
))
8503 fkey
->end
= ++fkey
->start
;
8504 fkey
->map
= fkey
->parent
;
8509 /* Read a sequence of keys that ends with a non prefix character,
8510 storing it in KEYBUF, a buffer of size BUFSIZE.
8512 Return the length of the key sequence stored.
8513 Return -1 if the user rejected a command menu.
8515 Echo starting immediately unless `prompt' is 0.
8517 Where a key sequence ends depends on the currently active keymaps.
8518 These include any minor mode keymaps active in the current buffer,
8519 the current buffer's local map, and the global map.
8521 If a key sequence has no other bindings, we check Vfunction_key_map
8522 to see if some trailing subsequence might be the beginning of a
8523 function key's sequence. If so, we try to read the whole function
8524 key, and substitute its symbolic name into the key sequence.
8526 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
8527 `double-' events into similar click events, if that would make them
8528 bound. We try to turn `triple-' events first into `double-' events,
8531 If we get a mouse click in a mode line, vertical divider, or other
8532 non-text area, we treat the click as if it were prefixed by the
8533 symbol denoting that area - `mode-line', `vertical-line', or
8536 If the sequence starts with a mouse click, we read the key sequence
8537 with respect to the buffer clicked on, not the current buffer.
8539 If the user switches frames in the midst of a key sequence, we put
8540 off the switch-frame event until later; the next call to
8541 read_char will return it.
8543 If FIX_CURRENT_BUFFER is nonzero, we restore current_buffer
8544 from the selected window's buffer. */
8547 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
8548 can_return_switch_frame
, fix_current_buffer
)
8549 Lisp_Object
*keybuf
;
8552 int dont_downcase_last
;
8553 int can_return_switch_frame
;
8554 int fix_current_buffer
;
8556 volatile Lisp_Object from_string
;
8557 volatile int count
= SPECPDL_INDEX ();
8559 /* How many keys there are in the current key sequence. */
8562 /* The length of the echo buffer when we started reading, and
8563 the length of this_command_keys when we started reading. */
8564 volatile int echo_start
;
8565 volatile int keys_start
;
8567 /* The number of keymaps we're scanning right now, and the number of
8568 keymaps we have allocated space for. */
8570 volatile int nmaps_allocated
= 0;
8572 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
8573 the current keymaps. */
8574 Lisp_Object
*volatile defs
= NULL
;
8576 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
8577 in the current keymaps, or nil where it is not a prefix. */
8578 Lisp_Object
*volatile submaps
= NULL
;
8580 /* The local map to start out with at start of key sequence. */
8581 volatile Lisp_Object orig_local_map
;
8583 /* The map from the `keymap' property to start out with at start of
8585 volatile Lisp_Object orig_keymap
;
8587 /* 1 if we have already considered switching to the local-map property
8588 of the place where a mouse click occurred. */
8589 volatile int localized_local_map
= 0;
8591 /* The index in defs[] of the first keymap that has a binding for
8592 this key sequence. In other words, the lowest i such that
8593 defs[i] is non-nil. */
8594 volatile int first_binding
;
8595 /* Index of the first key that has no binding.
8596 It is useless to try fkey.start larger than that. */
8597 volatile int first_unbound
;
8599 /* If t < mock_input, then KEYBUF[t] should be read as the next
8602 We use this to recover after recognizing a function key. Once we
8603 realize that a suffix of the current key sequence is actually a
8604 function key's escape sequence, we replace the suffix with the
8605 function key's binding from Vfunction_key_map. Now keybuf
8606 contains a new and different key sequence, so the echo area,
8607 this_command_keys, and the submaps and defs arrays are wrong. In
8608 this situation, we set mock_input to t, set t to 0, and jump to
8609 restart_sequence; the loop will read keys from keybuf up until
8610 mock_input, thus rebuilding the state; and then it will resume
8611 reading characters from the keyboard. */
8612 volatile int mock_input
= 0;
8614 /* If the sequence is unbound in submaps[], then
8615 keybuf[fkey.start..fkey.end-1] is a prefix in Vfunction_key_map,
8616 and fkey.map is its binding.
8618 These might be > t, indicating that all function key scanning
8619 should hold off until t reaches them. We do this when we've just
8620 recognized a function key, to avoid searching for the function
8621 key's again in Vfunction_key_map. */
8622 volatile keyremap fkey
;
8624 /* Likewise, for key_translation_map. */
8625 volatile keyremap keytran
;
8627 /* If we receive a `switch-frame' or `select-window' event in the middle of
8628 a key sequence, we put it off for later.
8629 While we're reading, we keep the event here. */
8630 volatile Lisp_Object delayed_switch_frame
;
8632 /* See the comment below... */
8633 #if defined (GOBBLE_FIRST_EVENT)
8634 Lisp_Object first_event
;
8637 volatile Lisp_Object original_uppercase
;
8638 volatile int original_uppercase_position
= -1;
8640 /* Gets around Microsoft compiler limitations. */
8643 struct buffer
*starting_buffer
;
8645 /* List of events for which a fake prefix key has been generated. */
8646 volatile Lisp_Object fake_prefixed_keys
= Qnil
;
8648 #if defined (GOBBLE_FIRST_EVENT)
8652 struct gcpro gcpro1
;
8654 GCPRO1 (fake_prefixed_keys
);
8655 raw_keybuf_count
= 0;
8657 last_nonmenu_event
= Qnil
;
8659 delayed_switch_frame
= Qnil
;
8660 fkey
.map
= fkey
.parent
= Vfunction_key_map
;
8661 keytran
.map
= keytran
.parent
= Vkey_translation_map
;
8662 /* If there is no translation-map, turn off scanning. */
8663 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
8664 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
8669 echo_prompt (prompt
);
8670 else if (cursor_in_echo_area
8671 && (FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8672 && NILP (Fzerop (Vecho_keystrokes
)))
8673 /* This doesn't put in a dash if the echo buffer is empty, so
8674 you don't always see a dash hanging out in the minibuffer. */
8678 /* Record the initial state of the echo area and this_command_keys;
8679 we will need to restore them if we replay a key sequence. */
8681 echo_start
= echo_length ();
8682 keys_start
= this_command_key_count
;
8683 this_single_command_key_start
= keys_start
;
8685 #if defined (GOBBLE_FIRST_EVENT)
8686 /* This doesn't quite work, because some of the things that read_char
8687 does cannot safely be bypassed. It seems too risky to try to make
8690 /* Read the first char of the sequence specially, before setting
8691 up any keymaps, in case a filter runs and switches buffers on us. */
8692 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
8694 #endif /* GOBBLE_FIRST_EVENT */
8696 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8697 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8700 /* We jump here when the key sequence has been thoroughly changed, and
8701 we need to rescan it starting from the beginning. When we jump here,
8702 keybuf[0..mock_input] holds the sequence we should reread. */
8705 starting_buffer
= current_buffer
;
8706 first_unbound
= bufsize
+ 1;
8708 /* Build our list of keymaps.
8709 If we recognize a function key and replace its escape sequence in
8710 keybuf with its symbol, or if the sequence starts with a mouse
8711 click and we need to switch buffers, we jump back here to rebuild
8712 the initial keymaps from the current buffer. */
8715 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
8716 || !NILP (Voverriding_local_map
))
8718 if (3 > nmaps_allocated
)
8720 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
8721 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
8722 nmaps_allocated
= 3;
8724 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
8725 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
8726 if (!NILP (Voverriding_local_map
))
8727 submaps
[nmaps
++] = Voverriding_local_map
;
8735 nminor
= current_minor_maps (0, &maps
);
8736 total
= nminor
+ (!NILP (orig_keymap
) ? 3 : 2);
8738 if (total
> nmaps_allocated
)
8740 submaps
= (Lisp_Object
*) alloca (total
* sizeof (submaps
[0]));
8741 defs
= (Lisp_Object
*) alloca (total
* sizeof (defs
[0]));
8742 nmaps_allocated
= total
;
8745 if (!NILP (orig_keymap
))
8746 submaps
[nmaps
++] = orig_keymap
;
8748 bcopy (maps
, (void *) (submaps
+ nmaps
),
8749 nminor
* sizeof (submaps
[0]));
8753 submaps
[nmaps
++] = orig_local_map
;
8755 submaps
[nmaps
++] = current_global_map
;
8757 /* Find an accurate initial value for first_binding. */
8758 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
8759 if (! NILP (submaps
[first_binding
]))
8762 /* Start from the beginning in keybuf. */
8765 /* These are no-ops the first time through, but if we restart, they
8766 revert the echo area and this_command_keys to their original state. */
8767 this_command_key_count
= keys_start
;
8768 if (INTERACTIVE
&& t
< mock_input
)
8769 echo_truncate (echo_start
);
8771 /* If the best binding for the current key sequence is a keymap, or
8772 we may be looking at a function key's escape sequence, keep on
8774 while (first_binding
< nmaps
8775 /* Keep reading as long as there's a prefix binding. */
8776 ? !NILP (submaps
[first_binding
])
8777 /* Don't return in the middle of a possible function key sequence,
8778 if the only bindings we found were via case conversion.
8779 Thus, if ESC O a has a function-key-map translation
8780 and ESC o has a binding, don't return after ESC O,
8781 so that we can translate ESC O plus the next character. */
8782 : (fkey
.start
< t
|| keytran
.start
< t
))
8785 int used_mouse_menu
= 0;
8787 /* Where the last real key started. If we need to throw away a
8788 key that has expanded into more than one element of keybuf
8789 (say, a mouse click on the mode line which is being treated
8790 as [mode-line (mouse-...)], then we backtrack to this point
8792 volatile int last_real_key_start
;
8794 /* These variables are analogous to echo_start and keys_start;
8795 while those allow us to restart the entire key sequence,
8796 echo_local_start and keys_local_start allow us to throw away
8798 volatile int echo_local_start
, keys_local_start
, local_first_binding
;
8800 eassert (fkey
.end
== t
|| (fkey
.end
> t
&& fkey
.end
<= mock_input
));
8801 eassert (fkey
.start
<= fkey
.end
);
8802 eassert (keytran
.start
<= keytran
.end
);
8803 /* key-translation-map is applied *after* function-key-map. */
8804 eassert (keytran
.end
<= fkey
.start
);
8806 if (first_unbound
< fkey
.start
&& first_unbound
< keytran
.start
)
8807 { /* The prefix upto first_unbound has no binding and has
8808 no translation left to do either, so we know it's unbound.
8809 If we don't stop now, we risk staying here indefinitely
8810 (if the user keeps entering fkey or keytran prefixes
8811 like C-c ESC ESC ESC ESC ...) */
8813 for (i
= first_unbound
+ 1; i
< t
; i
++)
8814 keybuf
[i
- first_unbound
- 1] = keybuf
[i
];
8815 mock_input
= t
- first_unbound
- 1;
8816 fkey
.end
= fkey
.start
-= first_unbound
+ 1;
8817 fkey
.map
= fkey
.parent
;
8818 keytran
.end
= keytran
.start
-= first_unbound
+ 1;
8819 keytran
.map
= keytran
.parent
;
8820 goto replay_sequence
;
8824 error ("Key sequence too long");
8827 echo_local_start
= echo_length ();
8828 keys_local_start
= this_command_key_count
;
8829 local_first_binding
= first_binding
;
8832 /* These are no-ops, unless we throw away a keystroke below and
8833 jumped back up to replay_key; in that case, these restore the
8834 variables to their original state, allowing us to replay the
8836 if (INTERACTIVE
&& t
< mock_input
)
8837 echo_truncate (echo_local_start
);
8838 this_command_key_count
= keys_local_start
;
8839 first_binding
= local_first_binding
;
8841 /* By default, assume each event is "real". */
8842 last_real_key_start
= t
;
8844 /* Does mock_input indicate that we are re-reading a key sequence? */
8848 add_command_key (key
);
8849 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
8850 && NILP (Fzerop (Vecho_keystrokes
)))
8854 /* If not, we should actually read a character. */
8859 KBOARD
*interrupted_kboard
= current_kboard
;
8860 struct frame
*interrupted_frame
= SELECTED_FRAME ();
8861 if (setjmp (wrong_kboard_jmpbuf
))
8863 if (!NILP (delayed_switch_frame
))
8865 interrupted_kboard
->kbd_queue
8866 = Fcons (delayed_switch_frame
,
8867 interrupted_kboard
->kbd_queue
);
8868 delayed_switch_frame
= Qnil
;
8871 interrupted_kboard
->kbd_queue
8872 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
8874 /* If the side queue is non-empty, ensure it begins with a
8875 switch-frame, so we'll replay it in the right context. */
8876 if (CONSP (interrupted_kboard
->kbd_queue
)
8877 && (key
= XCAR (interrupted_kboard
->kbd_queue
),
8878 !(EVENT_HAS_PARAMETERS (key
)
8879 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
8883 XSETFRAME (frame
, interrupted_frame
);
8884 interrupted_kboard
->kbd_queue
8885 = Fcons (make_lispy_switch_frame (frame
),
8886 interrupted_kboard
->kbd_queue
);
8889 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8890 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8891 goto replay_sequence
;
8894 key
= read_char (NILP (prompt
), nmaps
,
8895 (Lisp_Object
*) submaps
, last_nonmenu_event
,
8899 /* read_char returns t when it shows a menu and the user rejects it.
8903 unbind_to (count
, Qnil
);
8908 /* read_char returns -1 at the end of a macro.
8909 Emacs 18 handles this by returning immediately with a
8910 zero, so that's what we'll do. */
8911 if (INTEGERP (key
) && XINT (key
) == -1)
8914 /* The Microsoft C compiler can't handle the goto that
8920 /* If the current buffer has been changed from under us, the
8921 keymap may have changed, so replay the sequence. */
8924 timer_resume_idle ();
8927 /* Reset the current buffer from the selected window
8928 in case something changed the former and not the latter.
8929 This is to be more consistent with the behavior
8930 of the command_loop_1. */
8931 if (fix_current_buffer
)
8933 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
8935 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
8936 Fset_buffer (XWINDOW (selected_window
)->buffer
);
8939 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8940 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8941 goto replay_sequence
;
8944 /* If we have a quit that was typed in another frame, and
8945 quit_throw_to_read_char switched buffers,
8946 replay to get the right keymap. */
8948 && XINT (key
) == quit_char
8949 && current_buffer
!= starting_buffer
)
8952 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8956 orig_local_map
= get_local_map (PT
, current_buffer
, Qlocal_map
);
8957 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
8958 goto replay_sequence
;
8963 if (EVENT_HAS_PARAMETERS (key
)
8964 /* Either a `switch-frame' or a `select-window' event. */
8965 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)), Qswitch_frame
))
8967 /* If we're at the beginning of a key sequence, and the caller
8968 says it's okay, go ahead and return this event. If we're
8969 in the midst of a key sequence, delay it until the end. */
8970 if (t
> 0 || !can_return_switch_frame
)
8972 delayed_switch_frame
= key
;
8978 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
8981 /* Clicks in non-text areas get prefixed by the symbol
8982 in their CHAR-ADDRESS field. For example, a click on
8983 the mode line is prefixed by the symbol `mode-line'.
8985 Furthermore, key sequences beginning with mouse clicks
8986 are read using the keymaps of the buffer clicked on, not
8987 the current buffer. So we may have to switch the buffer
8990 When we turn one event into two events, we must make sure
8991 that neither of the two looks like the original--so that,
8992 if we replay the events, they won't be expanded again.
8993 If not for this, such reexpansion could happen either here
8994 or when user programs play with this-command-keys. */
8995 if (EVENT_HAS_PARAMETERS (key
))
9000 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
9001 if (EQ (kind
, Qmouse_click
))
9003 Lisp_Object window
, posn
;
9005 window
= POSN_WINDOW (EVENT_START (key
));
9006 posn
= POSN_POSN (EVENT_START (key
));
9009 || (!NILP (fake_prefixed_keys
)
9010 && !NILP (Fmemq (key
, fake_prefixed_keys
))))
9012 /* We're looking a second time at an event for which
9013 we generated a fake prefix key. Set
9014 last_real_key_start appropriately. */
9016 last_real_key_start
= t
- 1;
9019 /* Key sequences beginning with mouse clicks are
9020 read using the keymaps in the buffer clicked on,
9021 not the current buffer. If we're at the
9022 beginning of a key sequence, switch buffers. */
9023 if (last_real_key_start
== 0
9025 && BUFFERP (XWINDOW (window
)->buffer
)
9026 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
9028 XVECTOR (raw_keybuf
)->contents
[raw_keybuf_count
++] = key
;
9032 /* Arrange to go back to the original buffer once we're
9033 done reading the key sequence. Note that we can't
9034 use save_excursion_{save,restore} here, because they
9035 save point as well as the current buffer; we don't
9036 want to save point, because redisplay may change it,
9037 to accommodate a Fset_window_start or something. We
9038 don't want to do this at the top of the function,
9039 because we may get input from a subprocess which
9040 wants to change the selected window and stuff (say,
9042 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
9044 if (! FRAME_LIVE_P (XFRAME (selected_frame
)))
9046 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
9047 orig_local_map
= get_local_map (PT
, current_buffer
,
9049 orig_keymap
= get_local_map (PT
, current_buffer
, Qkeymap
);
9050 goto replay_sequence
;
9053 /* For a mouse click, get the local text-property keymap
9054 of the place clicked on, rather than point. */
9055 if (last_real_key_start
== 0
9056 && CONSP (XCDR (key
))
9057 && ! localized_local_map
)
9059 Lisp_Object map_here
, start
, pos
;
9061 localized_local_map
= 1;
9062 start
= EVENT_START (key
);
9064 if (CONSP (start
) && POSN_INBUFFER_P (start
))
9066 pos
= POSN_BUFFER_POSN (start
);
9068 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
9070 map_here
= get_local_map (XINT (pos
),
9071 current_buffer
, Qlocal_map
);
9072 if (!EQ (map_here
, orig_local_map
))
9074 orig_local_map
= map_here
;
9078 goto replay_sequence
;
9080 map_here
= get_local_map (XINT (pos
),
9081 current_buffer
, Qkeymap
);
9082 if (!EQ (map_here
, orig_keymap
))
9084 orig_keymap
= map_here
;
9088 goto replay_sequence
;
9094 /* Expand mode-line and scroll-bar events into two events:
9095 use posn as a fake prefix key. */
9097 && (NILP (fake_prefixed_keys
)
9098 || NILP (Fmemq (key
, fake_prefixed_keys
))))
9100 if (t
+ 1 >= bufsize
)
9101 error ("Key sequence too long");
9104 keybuf
[t
+ 1] = key
;
9107 /* Record that a fake prefix key has been generated
9108 for KEY. Don't modify the event; this would
9109 prevent proper action when the event is pushed
9110 back into unread-command-events. */
9111 fake_prefixed_keys
= Fcons (key
, fake_prefixed_keys
);
9113 /* If on a mode line string with a local keymap,
9114 reconsider the key sequence with that keymap. */
9115 if (string
= POSN_STRING (EVENT_START (key
)),
9116 (CONSP (string
) && STRINGP (XCAR (string
))))
9118 Lisp_Object pos
, map
, map2
;
9120 pos
= XCDR (string
);
9121 string
= XCAR (string
);
9123 && XINT (pos
) < SCHARS (string
))
9125 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9127 orig_local_map
= map
;
9128 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9131 if (!NILP (map
) || !NILP (map2
))
9132 goto replay_sequence
;
9138 else if (NILP (from_string
)
9139 && (string
= POSN_STRING (EVENT_START (key
)),
9140 (CONSP (string
) && STRINGP (XCAR (string
)))))
9142 /* For a click on a string, i.e. overlay string or a
9143 string displayed via the `display' property,
9144 consider `local-map' and `keymap' properties of
9146 Lisp_Object pos
, map
, map2
;
9148 pos
= XCDR (string
);
9149 string
= XCAR (string
);
9151 && XINT (pos
) < SCHARS (string
))
9153 map
= Fget_text_property (pos
, Qlocal_map
, string
);
9155 orig_local_map
= map
;
9156 map2
= Fget_text_property (pos
, Qkeymap
, string
);
9160 if (!NILP (map
) || !NILP (map2
))
9162 from_string
= string
;
9163 goto replay_sequence
;
9168 else if (CONSP (XCDR (key
))
9169 && CONSP (EVENT_START (key
))
9170 && CONSP (XCDR (EVENT_START (key
))))
9174 posn
= POSN_POSN (EVENT_START (key
));
9175 /* Handle menu-bar events:
9176 insert the dummy prefix event `menu-bar'. */
9177 if (EQ (posn
, Qmenu_bar
) || EQ (posn
, Qtool_bar
))
9179 if (t
+ 1 >= bufsize
)
9180 error ("Key sequence too long");
9184 /* Zap the position in key, so we know that we've
9185 expanded it, and don't try to do so again. */
9186 POSN_SET_POSN (EVENT_START (key
),
9187 Fcons (posn
, Qnil
));
9190 goto replay_sequence
;
9192 else if (CONSP (posn
))
9194 /* We're looking at the second event of a
9195 sequence which we expanded before. Set
9196 last_real_key_start appropriately. */
9197 if (last_real_key_start
== t
&& t
> 0)
9198 last_real_key_start
= t
- 1;
9203 /* We have finally decided that KEY is something we might want
9205 first_binding
= (follow_key (key
,
9206 nmaps
- first_binding
,
9207 submaps
+ first_binding
,
9208 defs
+ first_binding
,
9209 submaps
+ first_binding
)
9212 /* If KEY wasn't bound, we'll try some fallbacks. */
9213 if (first_binding
< nmaps
)
9214 /* This is needed for the following scenario:
9215 event 0: a down-event that gets dropped by calling replay_key.
9216 event 1: some normal prefix like C-h.
9217 After event 0, first_unbound is 0, after event 1 fkey.start
9218 and keytran.start are both 1, so when we see that C-h is bound,
9219 we need to update first_unbound. */
9220 first_unbound
= max (t
+ 1, first_unbound
);
9225 /* Remember the position to put an upper bound on fkey.start. */
9226 first_unbound
= min (t
, first_unbound
);
9228 head
= EVENT_HEAD (key
);
9229 if (help_char_p (head
) && t
> 0)
9231 read_key_sequence_cmd
= Vprefix_help_command
;
9233 last_nonmenu_event
= key
;
9234 /* The Microsoft C compiler can't handle the goto that
9242 Lisp_Object breakdown
;
9245 breakdown
= parse_modifiers (head
);
9246 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9247 /* Attempt to reduce an unbound mouse event to a simpler
9248 event that is bound:
9249 Drags reduce to clicks.
9250 Double-clicks reduce to clicks.
9251 Triple-clicks reduce to double-clicks, then to clicks.
9252 Down-clicks are eliminated.
9253 Double-downs reduce to downs, then are eliminated.
9254 Triple-downs reduce to double-downs, then to downs,
9255 then are eliminated. */
9256 if (modifiers
& (down_modifier
| drag_modifier
9257 | double_modifier
| triple_modifier
))
9259 while (modifiers
& (down_modifier
| drag_modifier
9260 | double_modifier
| triple_modifier
))
9262 Lisp_Object new_head
, new_click
;
9263 if (modifiers
& triple_modifier
)
9264 modifiers
^= (double_modifier
| triple_modifier
);
9265 else if (modifiers
& double_modifier
)
9266 modifiers
&= ~double_modifier
;
9267 else if (modifiers
& drag_modifier
)
9268 modifiers
&= ~drag_modifier
;
9271 /* Dispose of this `down' event by simply jumping
9272 back to replay_key, to get another event.
9274 Note that if this event came from mock input,
9275 then just jumping back to replay_key will just
9276 hand it to us again. So we have to wipe out any
9279 We could delete keybuf[t] and shift everything
9280 after that to the left by one spot, but we'd also
9281 have to fix up any variable that points into
9282 keybuf, and shifting isn't really necessary
9285 Adding prefixes for non-textual mouse clicks
9286 creates two characters of mock input, and both
9287 must be thrown away. If we're only looking at
9288 the prefix now, we can just jump back to
9289 replay_key. On the other hand, if we've already
9290 processed the prefix, and now the actual click
9291 itself is giving us trouble, then we've lost the
9292 state of the keymaps we want to backtrack to, and
9293 we need to replay the whole sequence to rebuild
9296 Beyond that, only function key expansion could
9297 create more than two keys, but that should never
9298 generate mouse events, so it's okay to zero
9299 mock_input in that case too.
9301 FIXME: The above paragraph seems just plain
9302 wrong, if you consider things like
9303 xterm-mouse-mode. -stef
9305 Isn't this just the most wonderful code ever? */
9307 /* If mock_input > t + 1, the above simplification
9308 will actually end up dropping keys on the floor.
9309 This is probably OK for now, but even
9310 if mock_input <= t + 1, we need to adjust fkey
9312 Typical case [header-line down-mouse-N]:
9313 mock_input = 2, t = 1, fkey.end = 1,
9314 last_real_key_start = 0. */
9315 if (fkey
.end
> last_real_key_start
)
9317 fkey
.end
= fkey
.start
9318 = min (last_real_key_start
, fkey
.start
);
9319 fkey
.map
= fkey
.parent
;
9320 if (keytran
.end
> last_real_key_start
)
9322 keytran
.end
= keytran
.start
9323 = min (last_real_key_start
, keytran
.start
);
9324 keytran
.map
= keytran
.parent
;
9327 if (t
== last_real_key_start
)
9334 mock_input
= last_real_key_start
;
9335 goto replay_sequence
;
9340 = apply_modifiers (modifiers
, XCAR (breakdown
));
9342 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
9344 /* Look for a binding for this new key. follow_key
9345 promises that it didn't munge submaps the
9346 last time we called it, since key was unbound. */
9348 = (follow_key (new_click
,
9349 nmaps
- local_first_binding
,
9350 submaps
+ local_first_binding
,
9351 defs
+ local_first_binding
,
9352 submaps
+ local_first_binding
)
9353 + local_first_binding
);
9355 /* If that click is bound, go for it. */
9356 if (first_binding
< nmaps
)
9361 /* Otherwise, we'll leave key set to the drag event. */
9368 /* Normally, last_nonmenu_event gets the previous key we read.
9369 But when a mouse popup menu is being used,
9370 we don't update last_nonmenu_event; it continues to hold the mouse
9371 event that preceded the first level of menu. */
9372 if (!used_mouse_menu
)
9373 last_nonmenu_event
= key
;
9375 /* Record what part of this_command_keys is the current key sequence. */
9376 this_single_command_key_start
= this_command_key_count
- t
;
9378 if (first_binding
< nmaps
&& NILP (submaps
[first_binding
]))
9379 /* There is a binding and it's not a prefix.
9380 There is thus no function-key in this sequence.
9381 Moving fkey.start is important in this case to allow keytran.start
9382 to go over the sequence before we return (since we keep the
9383 invariant that keytran.end <= fkey.start). */
9386 (fkey
.start
= fkey
.end
= t
, fkey
.map
= fkey
.parent
);
9389 /* If the sequence is unbound, see if we can hang a function key
9390 off the end of it. */
9391 /* Continue scan from fkey.end until we find a bound suffix. */
9392 while (fkey
.end
< t
)
9394 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9397 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9398 done
= keyremap_step (keybuf
, bufsize
, &fkey
,
9399 max (t
, mock_input
),
9400 /* If there's a binding (i.e.
9401 first_binding >= nmaps) we don't want
9402 to apply this function-key-mapping. */
9403 fkey
.end
+ 1 == t
&& first_binding
>= nmaps
,
9408 mock_input
= diff
+ max (t
, mock_input
);
9409 goto replay_sequence
;
9413 /* Look for this sequence in key-translation-map.
9414 Scan from keytran.end until we find a bound suffix. */
9415 while (keytran
.end
< fkey
.start
)
9417 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9420 GCPRO3 (fkey
.map
, keytran
.map
, delayed_switch_frame
);
9421 done
= keyremap_step (keybuf
, bufsize
, &keytran
, max (t
, mock_input
),
9426 mock_input
= diff
+ max (t
, mock_input
);
9427 /* Adjust the function-key-map counters. */
9431 goto replay_sequence
;
9435 /* If KEY is not defined in any of the keymaps,
9436 and cannot be part of a function key or translation,
9437 and is an upper case letter
9438 use the corresponding lower-case letter instead. */
9439 if (first_binding
>= nmaps
9440 && fkey
.start
>= t
&& keytran
.start
>= t
9442 && ((((XINT (key
) & 0x3ffff)
9443 < XCHAR_TABLE (current_buffer
->downcase_table
)->size
)
9444 && UPPERCASEP (XINT (key
) & 0x3ffff))
9445 || (XINT (key
) & shift_modifier
)))
9447 Lisp_Object new_key
;
9449 original_uppercase
= key
;
9450 original_uppercase_position
= t
- 1;
9452 if (XINT (key
) & shift_modifier
)
9453 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
9455 XSETINT (new_key
, (DOWNCASE (XINT (key
) & 0x3ffff)
9456 | (XINT (key
) & ~0x3ffff)));
9458 /* We have to do this unconditionally, regardless of whether
9459 the lower-case char is defined in the keymaps, because they
9460 might get translated through function-key-map. */
9461 keybuf
[t
- 1] = new_key
;
9462 mock_input
= max (t
, mock_input
);
9464 goto replay_sequence
;
9466 /* If KEY is not defined in any of the keymaps,
9467 and cannot be part of a function key or translation,
9468 and is a shifted function key,
9469 use the corresponding unshifted function key instead. */
9470 if (first_binding
>= nmaps
9471 && fkey
.start
>= t
&& keytran
.start
>= t
9474 Lisp_Object breakdown
;
9477 breakdown
= parse_modifiers (key
);
9478 modifiers
= XINT (XCAR (XCDR (breakdown
)));
9479 if (modifiers
& shift_modifier
)
9481 Lisp_Object new_key
;
9483 original_uppercase
= key
;
9484 original_uppercase_position
= t
- 1;
9486 modifiers
&= ~shift_modifier
;
9487 new_key
= apply_modifiers (modifiers
,
9490 keybuf
[t
- 1] = new_key
;
9491 mock_input
= max (t
, mock_input
);
9492 fkey
.start
= fkey
.end
= KEYMAPP (fkey
.map
) ? 0 : bufsize
+ 1;
9493 keytran
.start
= keytran
.end
= KEYMAPP (keytran
.map
) ? 0 : bufsize
+ 1;
9495 goto replay_sequence
;
9501 read_key_sequence_cmd
= (first_binding
< nmaps
9502 ? defs
[first_binding
]
9505 unread_switch_frame
= delayed_switch_frame
;
9506 unbind_to (count
, Qnil
);
9508 /* Don't downcase the last character if the caller says don't.
9509 Don't downcase it if the result is undefined, either. */
9510 if ((dont_downcase_last
|| first_binding
>= nmaps
)
9511 && t
- 1 == original_uppercase_position
)
9512 keybuf
[t
- 1] = original_uppercase
;
9514 /* Occasionally we fabricate events, perhaps by expanding something
9515 according to function-key-map, or by adding a prefix symbol to a
9516 mouse click in the scroll bar or modeline. In this cases, return
9517 the entire generated key sequence, even if we hit an unbound
9518 prefix or a definition before the end. This means that you will
9519 be able to push back the event properly, and also means that
9520 read-key-sequence will always return a logical unit.
9523 for (; t
< mock_input
; t
++)
9525 if ((FLOATP (Vecho_keystrokes
) || INTEGERP (Vecho_keystrokes
))
9526 && NILP (Fzerop (Vecho_keystrokes
)))
9527 echo_char (keybuf
[t
]);
9528 add_command_key (keybuf
[t
]);
9537 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 5, 0,
9538 doc
: /* Read a sequence of keystrokes and return as a string or vector.
9539 The sequence is sufficient to specify a non-prefix command in the
9540 current local and global maps.
9542 First arg PROMPT is a prompt string. If nil, do not prompt specially.
9543 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos
9544 as a continuation of the previous key.
9546 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not
9547 convert the last event to lower case. (Normally any upper case event
9548 is converted to lower case if the original event is undefined and the lower
9549 case equivalent is defined.) A non-nil value is appropriate for reading
9550 a key sequence to be defined.
9552 A C-g typed while in this function is treated like any other character,
9553 and `quit-flag' is not set.
9555 If the key sequence starts with a mouse click, then the sequence is read
9556 using the keymaps of the buffer of the window clicked in, not the buffer
9557 of the selected window as normal.
9559 `read-key-sequence' drops unbound button-down events, since you normally
9560 only care about the click or drag events which follow them. If a drag
9561 or multi-click event is unbound, but the corresponding click event would
9562 be bound, `read-key-sequence' turns the event into a click event at the
9563 drag's starting position. This means that you don't have to distinguish
9564 between click and drag, double, or triple events unless you want to.
9566 `read-key-sequence' prefixes mouse events on mode lines, the vertical
9567 lines separating windows, and scroll bars with imaginary keys
9568 `mode-line', `vertical-line', and `vertical-scroll-bar'.
9570 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this
9571 function will process a switch-frame event if the user switches frames
9572 before typing anything. If the user switches frames in the middle of a
9573 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME
9574 is nil, then the event will be put off until after the current key sequence.
9576 `read-key-sequence' checks `function-key-map' for function key
9577 sequences, where they wouldn't conflict with ordinary bindings. See
9578 `function-key-map' for more details.
9580 The optional fifth argument COMMAND-LOOP, if non-nil, means
9581 that this key sequence is being read by something that will
9582 read commands one after another. It should be nil if the caller
9583 will read just one key sequence. */)
9584 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9586 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9587 Lisp_Object can_return_switch_frame
, command_loop
;
9589 Lisp_Object keybuf
[30];
9591 struct gcpro gcpro1
;
9592 int count
= SPECPDL_INDEX ();
9595 CHECK_STRING (prompt
);
9598 specbind (Qinput_method_exit_on_first_char
,
9599 (NILP (command_loop
) ? Qt
: Qnil
));
9600 specbind (Qinput_method_use_echo_area
,
9601 (NILP (command_loop
) ? Qt
: Qnil
));
9603 bzero (keybuf
, sizeof keybuf
);
9605 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9607 if (NILP (continue_echo
))
9609 this_command_key_count
= 0;
9610 this_command_key_count_reset
= 0;
9611 this_single_command_key_start
= 0;
9614 #ifdef HAVE_X_WINDOWS
9615 if (display_hourglass_p
)
9616 cancel_hourglass ();
9619 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9620 prompt
, ! NILP (dont_downcase_last
),
9621 ! NILP (can_return_switch_frame
), 0);
9623 #if 0 /* The following is fine for code reading a key sequence and
9624 then proceeding with a lenghty computation, but it's not good
9625 for code reading keys in a loop, like an input method. */
9626 #ifdef HAVE_X_WINDOWS
9627 if (display_hourglass_p
)
9638 return unbind_to (count
, make_event_array (i
, keybuf
));
9641 DEFUN ("read-key-sequence-vector", Fread_key_sequence_vector
,
9642 Sread_key_sequence_vector
, 1, 5, 0,
9643 doc
: /* Like `read-key-sequence' but always return a vector. */)
9644 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
,
9646 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
9647 Lisp_Object can_return_switch_frame
, command_loop
;
9649 Lisp_Object keybuf
[30];
9651 struct gcpro gcpro1
;
9652 int count
= SPECPDL_INDEX ();
9655 CHECK_STRING (prompt
);
9658 specbind (Qinput_method_exit_on_first_char
,
9659 (NILP (command_loop
) ? Qt
: Qnil
));
9660 specbind (Qinput_method_use_echo_area
,
9661 (NILP (command_loop
) ? Qt
: Qnil
));
9663 bzero (keybuf
, sizeof keybuf
);
9665 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
9667 if (NILP (continue_echo
))
9669 this_command_key_count
= 0;
9670 this_command_key_count_reset
= 0;
9671 this_single_command_key_start
= 0;
9674 #ifdef HAVE_X_WINDOWS
9675 if (display_hourglass_p
)
9676 cancel_hourglass ();
9679 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
9680 prompt
, ! NILP (dont_downcase_last
),
9681 ! NILP (can_return_switch_frame
), 0);
9683 #ifdef HAVE_X_WINDOWS
9684 if (display_hourglass_p
)
9694 return unbind_to (count
, Fvector (i
, keybuf
));
9697 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
9698 doc
: /* Execute CMD as an editor command.
9699 CMD must be a symbol that satisfies the `commandp' predicate.
9700 Optional second arg RECORD-FLAG non-nil
9701 means unconditionally put this command in `command-history'.
9702 Otherwise, that is done only if an arg is read using the minibuffer.
9703 The argument KEYS specifies the value to use instead of (this-command-keys)
9704 when reading the arguments; if it is nil, (this-command-keys) is used.
9705 The argument SPECIAL, if non-nil, means that this command is executing
9706 a special event, so ignore the prefix argument and don't clear it. */)
9707 (cmd
, record_flag
, keys
, special
)
9708 Lisp_Object cmd
, record_flag
, keys
, special
;
9710 register Lisp_Object final
;
9711 register Lisp_Object tem
;
9712 Lisp_Object prefixarg
;
9713 struct backtrace backtrace
;
9714 extern int debug_on_next_call
;
9716 debug_on_next_call
= 0;
9720 prefixarg
= current_kboard
->Vprefix_arg
;
9721 Vcurrent_prefix_arg
= prefixarg
;
9722 current_kboard
->Vprefix_arg
= Qnil
;
9729 tem
= Fget (cmd
, Qdisabled
);
9730 if (!NILP (tem
) && !NILP (Vrun_hooks
))
9732 tem
= Fsymbol_value (Qdisabled_command_function
);
9734 return call1 (Vrun_hooks
, Qdisabled_command_function
);
9740 final
= Findirect_function (cmd
);
9742 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
9744 struct gcpro gcpro1
, gcpro2
;
9746 GCPRO2 (cmd
, prefixarg
);
9747 do_autoload (final
, cmd
);
9754 if (STRINGP (final
) || VECTORP (final
))
9756 /* If requested, place the macro in the command history. For
9757 other sorts of commands, call-interactively takes care of
9759 if (!NILP (record_flag
))
9762 = Fcons (Fcons (Qexecute_kbd_macro
,
9763 Fcons (final
, Fcons (prefixarg
, Qnil
))),
9766 /* Don't keep command history around forever. */
9767 if (NUMBERP (Vhistory_length
) && XINT (Vhistory_length
) > 0)
9769 tem
= Fnthcdr (Vhistory_length
, Vcommand_history
);
9771 XSETCDR (tem
, Qnil
);
9775 return Fexecute_kbd_macro (final
, prefixarg
, Qnil
);
9778 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
9780 backtrace
.next
= backtrace_list
;
9781 backtrace_list
= &backtrace
;
9782 backtrace
.function
= &Qcall_interactively
;
9783 backtrace
.args
= &cmd
;
9784 backtrace
.nargs
= 1;
9785 backtrace
.evalargs
= 0;
9786 backtrace
.debug_on_exit
= 0;
9788 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
9790 backtrace_list
= backtrace
.next
;
9798 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
9800 doc
: /* Read function name, then read its arguments and call it. */)
9802 Lisp_Object prefixarg
;
9804 Lisp_Object function
;
9806 int saved_last_point_position
;
9807 Lisp_Object saved_keys
, saved_last_point_position_buffer
;
9808 Lisp_Object bindings
, value
;
9809 struct gcpro gcpro1
, gcpro2
, gcpro3
;
9810 #ifdef HAVE_X_WINDOWS
9811 /* The call to Fcompleting_read wil start and cancel the hourglass,
9812 but if the hourglass was already scheduled, this means that no
9813 hourglass will be shown for the actual M-x command itself.
9814 So we restart it if it is already scheduled. Note that checking
9815 hourglass_shown_p is not enough, normally the hourglass is not shown,
9816 just scheduled to be shown. */
9817 int hstarted
= hourglass_started ();
9820 saved_keys
= Fvector (this_command_key_count
,
9821 XVECTOR (this_command_keys
)->contents
);
9822 saved_last_point_position_buffer
= last_point_position_buffer
;
9823 saved_last_point_position
= last_point_position
;
9825 GCPRO3 (saved_keys
, prefixarg
, saved_last_point_position_buffer
);
9827 if (EQ (prefixarg
, Qminus
))
9829 else if (CONSP (prefixarg
) && XINT (XCAR (prefixarg
)) == 4)
9830 strcpy (buf
, "C-u ");
9831 else if (CONSP (prefixarg
) && INTEGERP (XCAR (prefixarg
)))
9832 sprintf (buf
, "%ld ", (long) XINT (XCAR (prefixarg
)));
9833 else if (INTEGERP (prefixarg
))
9834 sprintf (buf
, "%ld ", (long) XINT (prefixarg
));
9836 /* This isn't strictly correct if execute-extended-command
9837 is bound to anything else. Perhaps it should use
9838 this_command_keys? */
9839 strcat (buf
, "M-x ");
9841 /* Prompt with buf, and then read a string, completing from and
9842 restricting to the set of all defined commands. Don't provide
9843 any initial input. Save the command read on the extended-command
9845 function
= Fcompleting_read (build_string (buf
),
9846 Vobarray
, Qcommandp
,
9847 Qt
, Qnil
, Qextended_command_history
, Qnil
,
9850 #ifdef HAVE_X_WINDOWS
9851 if (hstarted
) start_hourglass ();
9854 if (STRINGP (function
) && SCHARS (function
) == 0)
9855 error ("No command name given");
9857 /* Set this_command_keys to the concatenation of saved_keys and
9858 function, followed by a RET. */
9863 this_command_key_count
= 0;
9864 this_command_key_count_reset
= 0;
9865 this_single_command_key_start
= 0;
9867 keys
= XVECTOR (saved_keys
)->contents
;
9868 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
9869 add_command_key (keys
[i
]);
9871 for (i
= 0; i
< SCHARS (function
); i
++)
9872 add_command_key (Faref (function
, make_number (i
)));
9874 add_command_key (make_number ('\015'));
9877 last_point_position
= saved_last_point_position
;
9878 last_point_position_buffer
= saved_last_point_position_buffer
;
9882 function
= Fintern (function
, Qnil
);
9883 current_kboard
->Vprefix_arg
= prefixarg
;
9884 Vthis_command
= function
;
9885 real_this_command
= function
;
9887 /* If enabled, show which key runs this command. */
9888 if (!NILP (Vsuggest_key_bindings
)
9889 && NILP (Vexecuting_macro
)
9890 && SYMBOLP (function
))
9891 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
9897 GCPRO2 (bindings
, value
);
9898 value
= Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
9900 /* If the command has a key binding, print it now. */
9901 if (!NILP (bindings
)
9902 && ! (VECTORP (bindings
) && EQ (Faref (bindings
, make_number (0)),
9905 /* But first wait, and skip the message if there is input. */
9907 if (!NILP (echo_area_buffer
[0]))
9908 /* This command displayed something in the echo area;
9909 so wait a few seconds, then display our suggestion message. */
9910 delay_time
= (NUMBERP (Vsuggest_key_bindings
)
9911 ? XINT (Vsuggest_key_bindings
) : 2);
9913 /* This command left the echo area empty,
9914 so display our message immediately. */
9917 if (!NILP (Fsit_for (make_number (delay_time
), Qnil
, Qnil
))
9918 && ! CONSP (Vunread_command_events
))
9920 Lisp_Object binding
;
9922 int message_p
= push_message ();
9923 int count
= SPECPDL_INDEX ();
9925 record_unwind_protect (pop_message_unwind
, Qnil
);
9926 binding
= Fkey_description (bindings
, Qnil
);
9929 = (char *) alloca (SCHARS (SYMBOL_NAME (function
))
9932 sprintf (newmessage
, "You can run the command `%s' with %s",
9933 SDATA (SYMBOL_NAME (function
)),
9935 message2_nolog (newmessage
,
9936 strlen (newmessage
),
9937 STRING_MULTIBYTE (binding
));
9938 if (!NILP (Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
9939 ? Vsuggest_key_bindings
: make_number (2)),
9944 unbind_to (count
, Qnil
);
9948 RETURN_UNGCPRO (value
);
9952 /* Return nonzero if input events are pending. */
9955 detect_input_pending ()
9958 get_input_pending (&input_pending
, 0);
9960 return input_pending
;
9963 /* Return nonzero if input events other than mouse movements are
9967 detect_input_pending_ignore_squeezables ()
9970 get_input_pending (&input_pending
, READABLE_EVENTS_IGNORE_SQUEEZABLES
);
9972 return input_pending
;
9975 /* Return nonzero if input events are pending, and run any pending timers. */
9978 detect_input_pending_run_timers (do_display
)
9981 int old_timers_run
= timers_run
;
9984 get_input_pending (&input_pending
, READABLE_EVENTS_DO_TIMERS_NOW
);
9986 if (old_timers_run
!= timers_run
&& do_display
)
9988 redisplay_preserve_echo_area (8);
9989 /* The following fixes a bug when using lazy-lock with
9990 lazy-lock-defer-on-the-fly set to t, i.e. when fontifying
9991 from an idle timer function. The symptom of the bug is that
9992 the cursor sometimes doesn't become visible until the next X
9993 event is processed. --gerd. */
9995 Lisp_Object tail
, frame
;
9996 FOR_EACH_FRAME (tail
, frame
)
9997 if (FRAME_RIF (XFRAME (frame
)))
9998 FRAME_RIF (XFRAME (frame
))->flush_display (XFRAME (frame
));
10002 return input_pending
;
10005 /* This is called in some cases before a possible quit.
10006 It cases the next call to detect_input_pending to recompute input_pending.
10007 So calling this function unnecessarily can't do any harm. */
10010 clear_input_pending ()
10015 /* Return nonzero if there are pending requeued events.
10016 This isn't used yet. The hope is to make wait_reading_process_output
10017 call it, and return if it runs Lisp code that unreads something.
10018 The problem is, kbd_buffer_get_event needs to be fixed to know what
10019 to do in that case. It isn't trivial. */
10022 requeued_events_pending_p ()
10024 return (!NILP (Vunread_command_events
) || unread_command_char
!= -1);
10028 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
10029 doc
: /* Return t if command input is currently available with no wait.
10030 Actually, the value is nil only if we can be sure that no input is available;
10031 if there is a doubt, the value is t. */)
10034 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
10037 get_input_pending (&input_pending
,
10038 READABLE_EVENTS_DO_TIMERS_NOW
10039 | READABLE_EVENTS_FILTER_EVENTS
);
10040 return input_pending
> 0 ? Qt
: Qnil
;
10043 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
10044 doc
: /* Return vector of last 100 events, not counting those from keyboard macros. */)
10047 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
10050 if (total_keys
< NUM_RECENT_KEYS
)
10051 return Fvector (total_keys
, keys
);
10054 val
= Fvector (NUM_RECENT_KEYS
, keys
);
10055 bcopy (keys
+ recent_keys_index
,
10056 XVECTOR (val
)->contents
,
10057 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
10059 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
10060 recent_keys_index
* sizeof (Lisp_Object
));
10065 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
10066 doc
: /* Return the key sequence that invoked this command.
10067 However, if the command has called `read-key-sequence', it returns
10068 the last key sequence that has been read.
10069 The value is a string or a vector. */)
10072 return make_event_array (this_command_key_count
,
10073 XVECTOR (this_command_keys
)->contents
);
10076 DEFUN ("this-command-keys-vector", Fthis_command_keys_vector
, Sthis_command_keys_vector
, 0, 0, 0,
10077 doc
: /* Return the key sequence that invoked this command, as a vector.
10078 However, if the command has called `read-key-sequence', it returns
10079 the last key sequence that has been read. */)
10082 return Fvector (this_command_key_count
,
10083 XVECTOR (this_command_keys
)->contents
);
10086 DEFUN ("this-single-command-keys", Fthis_single_command_keys
,
10087 Sthis_single_command_keys
, 0, 0, 0,
10088 doc
: /* Return the key sequence that invoked this command.
10089 More generally, it returns the last key sequence read, either by
10090 the command loop or by `read-key-sequence'.
10091 Unlike `this-command-keys', this function's value
10092 does not include prefix arguments.
10093 The value is always a vector. */)
10096 return Fvector (this_command_key_count
10097 - this_single_command_key_start
,
10098 (XVECTOR (this_command_keys
)->contents
10099 + this_single_command_key_start
));
10102 DEFUN ("this-single-command-raw-keys", Fthis_single_command_raw_keys
,
10103 Sthis_single_command_raw_keys
, 0, 0, 0,
10104 doc
: /* Return the raw events that were read for this command.
10105 More generally, it returns the last key sequence read, either by
10106 the command loop or by `read-key-sequence'.
10107 Unlike `this-single-command-keys', this function's value
10108 shows the events before all translations (except for input methods).
10109 The value is always a vector. */)
10112 return Fvector (raw_keybuf_count
,
10113 (XVECTOR (raw_keybuf
)->contents
));
10116 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
10117 Sreset_this_command_lengths
, 0, 0, 0,
10118 doc
: /* Make the unread events replace the last command and echo.
10119 Used in `universal-argument-other-key'.
10121 `universal-argument-other-key' rereads the event just typed.
10122 It then gets translated through `function-key-map'.
10123 The translated event has to replace the real events,
10124 both in the value of (this-command-keys) and in echoing.
10125 To achieve this, `universal-argument-other-key' calls
10126 `reset-this-command-lengths', which discards the record of reading
10127 these events the first time. */)
10130 this_command_key_count
= before_command_key_count
;
10131 if (this_command_key_count
< this_single_command_key_start
)
10132 this_single_command_key_start
= this_command_key_count
;
10134 echo_truncate (before_command_echo_length
);
10136 /* Cause whatever we put into unread-command-events
10137 to echo as if it were being freshly read from the keyboard. */
10138 this_command_key_count_reset
= 1;
10143 DEFUN ("clear-this-command-keys", Fclear_this_command_keys
,
10144 Sclear_this_command_keys
, 0, 1, 0,
10145 doc
: /* Clear out the vector that `this-command-keys' returns.
10146 Also clear the record of the last 100 events, unless optional arg
10147 KEEP-RECORD is non-nil. */)
10149 Lisp_Object keep_record
;
10153 this_command_key_count
= 0;
10154 this_command_key_count_reset
= 0;
10156 if (NILP (keep_record
))
10158 for (i
= 0; i
< XVECTOR (recent_keys
)->size
; ++i
)
10159 XVECTOR (recent_keys
)->contents
[i
] = Qnil
;
10161 recent_keys_index
= 0;
10166 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
10167 doc
: /* Return the current depth in recursive edits. */)
10171 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
10175 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
10176 "FOpen dribble file: ",
10177 doc
: /* Start writing all keyboard characters to a dribble file called FILE.
10178 If FILE is nil, close any open dribble file. */)
10189 file
= Fexpand_file_name (file
, Qnil
);
10190 dribble
= fopen (SDATA (file
), "w");
10192 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
10197 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
10198 doc
: /* Discard the contents of the terminal input buffer.
10199 Also end any kbd macro being defined. */)
10202 if (!NILP (current_kboard
->defining_kbd_macro
))
10204 /* Discard the last command from the macro. */
10205 Fcancel_kbd_macro_events ();
10209 update_mode_lines
++;
10211 Vunread_command_events
= Qnil
;
10212 unread_command_char
= -1;
10214 discard_tty_input ();
10216 kbd_fetch_ptr
= kbd_store_ptr
;
10222 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
10223 doc
: /* Stop Emacs and return to superior process. You can resume later.
10224 If `cannot-suspend' is non-nil, or if the system doesn't support job
10225 control, run a subshell instead.
10227 If optional arg STUFFSTRING is non-nil, its characters are stuffed
10228 to be read as terminal input by Emacs's parent, after suspension.
10230 Before suspending, run the normal hook `suspend-hook'.
10231 After resumption run the normal hook `suspend-resume-hook'.
10233 Some operating systems cannot stop the Emacs process and resume it later.
10234 On such systems, Emacs starts a subshell instead of suspending. */)
10236 Lisp_Object stuffstring
;
10238 int count
= SPECPDL_INDEX ();
10239 int old_height
, old_width
;
10241 struct gcpro gcpro1
;
10243 if (tty_list
&& tty_list
->next
)
10244 error ("There are other tty frames open; close them before suspending Emacs");
10246 if (!NILP (stuffstring
))
10247 CHECK_STRING (stuffstring
);
10249 /* Run the functions in suspend-hook. */
10250 if (!NILP (Vrun_hooks
))
10251 call1 (Vrun_hooks
, intern ("suspend-hook"));
10253 GCPRO1 (stuffstring
);
10254 get_tty_size (fileno (CURTTY ()->input
), &old_width
, &old_height
);
10255 reset_all_sys_modes ();
10256 /* sys_suspend can get an error if it tries to fork a subshell
10257 and the system resources aren't available for that. */
10258 record_unwind_protect ((Lisp_Object (*) P_ ((Lisp_Object
))) init_all_sys_modes
,
10260 stuff_buffered_input (stuffstring
);
10261 if (cannot_suspend
)
10265 unbind_to (count
, Qnil
);
10267 /* Check if terminal/window size has changed.
10268 Note that this is not useful when we are running directly
10269 with a window system; but suspend should be disabled in that case. */
10270 get_tty_size (fileno (CURTTY ()->input
), &width
, &height
);
10271 if (width
!= old_width
|| height
!= old_height
)
10272 change_frame_size (SELECTED_FRAME (), height
, width
, 0, 0, 0);
10274 /* Run suspend-resume-hook. */
10275 if (!NILP (Vrun_hooks
))
10276 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
10282 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
10283 Then in any case stuff anything Emacs has read ahead and not used. */
10286 stuff_buffered_input (stuffstring
)
10287 Lisp_Object stuffstring
;
10289 #ifdef SIGTSTP /* stuff_char is defined if SIGTSTP. */
10290 register unsigned char *p
;
10292 if (STRINGP (stuffstring
))
10294 register int count
;
10296 p
= SDATA (stuffstring
);
10297 count
= SBYTES (stuffstring
);
10298 while (count
-- > 0)
10303 /* Anything we have read ahead, put back for the shell to read. */
10304 /* ?? What should this do when we have multiple keyboards??
10305 Should we ignore anything that was typed in at the "wrong" kboard?
10307 rms: we should stuff everything back into the kboard
10309 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
10312 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
10313 kbd_fetch_ptr
= kbd_buffer
;
10314 if (kbd_fetch_ptr
->kind
== ASCII_KEYSTROKE_EVENT
)
10315 stuff_char (kbd_fetch_ptr
->code
);
10317 clear_event (kbd_fetch_ptr
);
10321 #endif /* SIGTSTP */
10325 set_waiting_for_input (time_to_clear
)
10326 EMACS_TIME
*time_to_clear
;
10328 input_available_clear_time
= time_to_clear
;
10330 /* Tell handle_interrupt to throw back to read_char, */
10331 waiting_for_input
= 1;
10333 /* If handle_interrupt was called before and buffered a C-g,
10334 make it run again now, to avoid timing error. */
10335 if (!NILP (Vquit_flag
))
10336 quit_throw_to_read_char ();
10340 clear_waiting_for_input ()
10342 /* Tell handle_interrupt not to throw back to read_char, */
10343 waiting_for_input
= 0;
10344 input_available_clear_time
= 0;
10347 /* The SIGINT handler.
10349 If we have a frame on the controlling tty, we assume that the
10350 SIGINT was generated by C-g, so we call handle_interrupt.
10351 Otherwise, the handler kills Emacs. */
10354 interrupt_signal (signalnum
) /* If we don't have an argument, */
10355 int signalnum
; /* some compilers complain in signal calls. */
10357 /* Must preserve main program's value of errno. */
10358 int old_errno
= errno
;
10359 struct display
*display
;
10361 #if defined (USG) && !defined (POSIX_SIGNALS)
10362 /* USG systems forget handlers when they are used;
10363 must reestablish each time */
10364 signal (SIGINT
, interrupt_signal
);
10365 signal (SIGQUIT
, interrupt_signal
);
10368 SIGNAL_THREAD_CHECK (signalnum
);
10370 /* See if we have an active display on our controlling terminal. */
10371 display
= get_named_tty_display (NULL
);
10374 /* If there are no frames there, let's pretend that we are a
10375 well-behaving UN*X program and quit. */
10376 fatal_error_signal (SIGTERM
);
10380 /* Otherwise, the SIGINT was probably generated by C-g. */
10382 /* Set internal_last_event_frame to the top frame of the
10383 controlling tty, if we have a frame there. We disable the
10384 interrupt key on secondary ttys, so the SIGINT must have come
10385 from the controlling tty. */
10386 internal_last_event_frame
= display
->display_info
.tty
->top_frame
;
10388 handle_interrupt ();
10394 /* This routine is called at interrupt level in response to C-g.
10396 It is called from the SIGINT handler or kbd_buffer_store_event.
10398 If `waiting_for_input' is non zero, then unless `echoing' is
10399 nonzero, immediately throw back to read_char.
10401 Otherwise it sets the Lisp variable quit-flag not-nil. This causes
10402 eval to throw, when it gets a chance. If quit-flag is already
10403 non-nil, it stops the job right away. */
10406 handle_interrupt ()
10412 /* XXX This code needs to be revised for multi-tty support. */
10413 if (!NILP (Vquit_flag
)
10415 && get_named_tty_display (NULL
)
10419 /* If SIGINT isn't blocked, don't let us be interrupted by
10420 another SIGINT, it might be harmful due to non-reentrancy
10421 in I/O functions. */
10422 sigblock (sigmask (SIGINT
));
10425 reset_all_sys_modes ();
10427 #ifdef SIGTSTP /* Support possible in later USG versions */
10429 * On systems which can suspend the current process and return to the original
10430 * shell, this command causes the user to end up back at the shell.
10431 * The "Auto-save" and "Abort" questions are not asked until
10432 * the user elects to return to emacs, at which point he can save the current
10433 * job and either dump core or continue.
10438 if (sys_suspend () == -1)
10440 printf ("Not running as a subprocess;\n");
10441 printf ("you can continue or abort.\n");
10443 #else /* not VMS */
10444 /* Perhaps should really fork an inferior shell?
10445 But that would not provide any way to get back
10446 to the original shell, ever. */
10447 printf ("No support for stopping a process on this operating system;\n");
10448 printf ("you can continue or abort.\n");
10449 #endif /* not VMS */
10450 #endif /* not SIGTSTP */
10452 /* We must remain inside the screen area when the internal terminal
10453 is used. Note that [Enter] is not echoed by dos. */
10456 /* It doesn't work to autosave while GC is in progress;
10457 the code used for auto-saving doesn't cope with the mark bit. */
10458 if (!gc_in_progress
)
10460 printf ("Auto-save? (y or n) ");
10462 if (((c
= getchar ()) & ~040) == 'Y')
10464 Fdo_auto_save (Qt
, Qnil
);
10466 printf ("\r\nAuto-save done");
10467 #else /* not MSDOS */
10468 printf ("Auto-save done\n");
10469 #endif /* not MSDOS */
10471 while (c
!= '\n') c
= getchar ();
10475 /* During GC, it must be safe to reenable quitting again. */
10476 Vinhibit_quit
= Qnil
;
10479 #endif /* not MSDOS */
10480 printf ("Garbage collection in progress; cannot auto-save now\r\n");
10481 printf ("but will instead do a real quit after garbage collection ends\r\n");
10486 printf ("\r\nAbort? (y or n) ");
10487 #else /* not MSDOS */
10489 printf ("Abort (and enter debugger)? (y or n) ");
10490 #else /* not VMS */
10491 printf ("Abort (and dump core)? (y or n) ");
10492 #endif /* not VMS */
10493 #endif /* not MSDOS */
10495 if (((c
= getchar ()) & ~040) == 'Y')
10497 while (c
!= '\n') c
= getchar ();
10499 printf ("\r\nContinuing...\r\n");
10500 #else /* not MSDOS */
10501 printf ("Continuing...\n");
10502 #endif /* not MSDOS */
10504 init_all_sys_modes ();
10509 /* If executing a function that wants to be interrupted out of
10510 and the user has not deferred quitting by binding `inhibit-quit'
10511 then quit right away. */
10512 if (immediate_quit
&& NILP (Vinhibit_quit
))
10514 struct gl_state_s saved
;
10515 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
10517 immediate_quit
= 0;
10520 GCPRO4 (saved
.object
, saved
.global_code
,
10521 saved
.current_syntax_table
, saved
.old_prop
);
10522 Fsignal (Qquit
, Qnil
);
10527 /* Else request quit when it's safe */
10531 if (waiting_for_input
&& !echoing
)
10532 quit_throw_to_read_char ();
10535 /* Handle a C-g by making read_char return C-g. */
10538 quit_throw_to_read_char ()
10541 /* Prevent another signal from doing this before we finish. */
10542 clear_waiting_for_input ();
10545 Vunread_command_events
= Qnil
;
10546 unread_command_char
= -1;
10548 #if 0 /* Currently, sit_for is called from read_char without turning
10549 off polling. And that can call set_waiting_for_input.
10550 It seems to be harmless. */
10551 #ifdef POLL_FOR_INPUT
10552 /* May be > 1 if in recursive minibuffer. */
10553 if (poll_suppress_count
== 0)
10557 if (FRAMEP (internal_last_event_frame
)
10558 && !EQ (internal_last_event_frame
, selected_frame
))
10559 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
10562 _longjmp (getcjmp
, 1);
10565 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
10566 doc
: /* Set mode of reading keyboard input.
10567 First arg INTERRUPT non-nil means use input interrupts;
10568 nil means use CBREAK mode.
10569 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal
10570 (no effect except in CBREAK mode).
10571 Third arg META t means accept 8-bit input (for a Meta key).
10572 META nil means ignore the top bit, on the assumption it is parity.
10573 Otherwise, accept 8-bit input and don't use the top bit for Meta.
10574 Optional fourth arg QUIT if non-nil specifies character to use for quitting.
10575 See also `current-input-mode'. */)
10576 (interrupt
, flow
, meta
, quit
)
10577 Lisp_Object interrupt
, flow
, meta
, quit
;
10579 /* XXX This function needs to be revised for multi-device support.
10580 Currently it compiles fine, but its semantics are wrong. It sets
10581 global parameters (e.g. interrupt_input) based on only the
10582 current frame's device. */
10585 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
10586 error ("set-input-mode: QUIT must be an ASCII character");
10588 #ifdef POLL_FOR_INPUT
10593 /* this causes startup screen to be restored and messes with the mouse */
10594 reset_all_sys_modes ();
10598 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10599 if (FRAME_DISPLAY (SELECTED_FRAME ())->read_socket_hook
)
10601 /* When using X, don't give the user a real choice,
10602 because we haven't implemented the mechanisms to support it. */
10603 #ifdef NO_SOCK_SIGIO
10604 interrupt_input
= 0;
10605 #else /* not NO_SOCK_SIGIO */
10606 interrupt_input
= 1;
10607 #endif /* NO_SOCK_SIGIO */
10610 interrupt_input
= !NILP (interrupt
);
10611 #else /* not SIGIO */
10612 interrupt_input
= 0;
10613 #endif /* not SIGIO */
10615 /* Our VMS input only works by interrupts, as of now. */
10617 interrupt_input
= 1;
10620 if (FRAME_TERMCAP_P (XFRAME (selected_frame
)))
10622 struct tty_display_info
*tty
= CURTTY ();
10623 tty
->flow_control
= !NILP (flow
);
10626 else if (EQ (meta
, Qt
))
10633 /* Don't let this value be out of range. */
10634 quit_char
= XINT (quit
) & (NILP (meta
) ? 0177 : 0377);
10637 init_all_sys_modes ();
10640 #ifdef POLL_FOR_INPUT
10641 poll_suppress_count
= 1;
10647 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
10648 doc
: /* Return information about the way Emacs currently reads keyboard input.
10649 The value is a list of the form (INTERRUPT FLOW META QUIT), where
10650 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if
10651 nil, Emacs is using CBREAK mode.
10652 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the
10653 terminal; this does not apply if Emacs uses interrupt-driven input.
10654 META is t if accepting 8-bit input with 8th bit as Meta flag.
10655 META nil means ignoring the top bit, on the assumption it is parity.
10656 META is neither t nor nil if accepting 8-bit input and using
10657 all 8 bits as the character code.
10658 QUIT is the character Emacs currently uses to quit.
10659 The elements of this list correspond to the arguments of
10660 `set-input-mode'. */)
10663 Lisp_Object val
[4];
10664 struct frame
*sf
= XFRAME (selected_frame
);
10666 val
[0] = interrupt_input
? Qt
: Qnil
;
10667 if (FRAME_TERMCAP_P (sf
))
10669 val
[1] = FRAME_TTY (sf
)->flow_control
? Qt
: Qnil
;
10670 val
[2] = (FRAME_TTY (sf
)->meta_key
== 2
10672 : (CURTTY ()->meta_key
== 1 ? Qt
: Qnil
));
10679 XSETFASTINT (val
[3], quit_char
);
10681 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
10684 DEFUN ("posn-at-x-y", Fposn_at_x_y
, Sposn_at_x_y
, 2, 4, 0,
10685 doc
: /* Return position information for pixel coordinates X and Y.
10686 By default, X and Y are relative to text area of the selected window.
10687 Optional third arg FRAME_OR_WINDOW non-nil specifies frame or window.
10688 If optional fourth arg WHOLE is non-nil, X is relative to the left
10689 edge of the window.
10691 The return value is similar to a mouse click position:
10692 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10693 IMAGE (DX . DY) (WIDTH . HEIGHT))
10694 The `posn-' functions access elements of such lists. */)
10695 (x
, y
, frame_or_window
, whole
)
10696 Lisp_Object x
, y
, frame_or_window
, whole
;
10701 if (NILP (frame_or_window
))
10702 frame_or_window
= selected_window
;
10704 if (WINDOWP (frame_or_window
))
10708 CHECK_LIVE_WINDOW (frame_or_window
);
10710 w
= XWINDOW (frame_or_window
);
10711 XSETINT (x
, (WINDOW_TO_FRAME_PIXEL_X (w
, XINT (x
))
10713 ? window_box_left_offset (w
, TEXT_AREA
)
10714 : - (WINDOW_LEFT_SCROLL_BAR_COLS (w
)
10715 * WINDOW_FRAME_COLUMN_WIDTH (w
)))));
10716 XSETINT (y
, WINDOW_TO_FRAME_PIXEL_Y (w
, XINT (y
)));
10717 frame_or_window
= w
->frame
;
10720 CHECK_LIVE_FRAME (frame_or_window
);
10722 return make_lispy_position (XFRAME (frame_or_window
), &x
, &y
, 0);
10725 DEFUN ("posn-at-point", Fposn_at_point
, Sposn_at_point
, 0, 2, 0,
10726 doc
: /* Return position information for buffer POS in WINDOW.
10727 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
10729 Return nil if position is not visible in window. Otherwise,
10730 the return value is similar to that returned by `event-start' for
10731 a mouse click at the upper left corner of the glyph corresponding
10732 to the given buffer position:
10733 (WINDOW AREA-OR-POS (X . Y) TIMESTAMP OBJECT POS (COL . ROW)
10734 IMAGE (DX . DY) (WIDTH . HEIGHT))
10735 The `posn-' functions access elements of such lists. */)
10737 Lisp_Object pos
, window
;
10741 tem
= Fpos_visible_in_window_p (pos
, window
, Qt
);
10743 tem
= Fposn_at_x_y (XCAR (tem
), XCAR (XCDR (tem
)), window
, Qnil
);
10749 * Set up a new kboard object with reasonable initial values.
10755 kb
->Voverriding_terminal_local_map
= Qnil
;
10756 kb
->Vlast_command
= Qnil
;
10757 kb
->Vreal_last_command
= Qnil
;
10758 kb
->Vprefix_arg
= Qnil
;
10759 kb
->Vlast_prefix_arg
= Qnil
;
10760 kb
->kbd_queue
= Qnil
;
10761 kb
->kbd_queue_has_data
= 0;
10762 kb
->immediate_echo
= 0;
10763 kb
->echo_string
= Qnil
;
10764 kb
->echo_after_prompt
= -1;
10765 kb
->kbd_macro_buffer
= 0;
10766 kb
->kbd_macro_bufsize
= 0;
10767 kb
->defining_kbd_macro
= Qnil
;
10768 kb
->Vlast_kbd_macro
= Qnil
;
10769 kb
->reference_count
= 0;
10770 kb
->Vsystem_key_alist
= Qnil
;
10771 kb
->system_key_syms
= Qnil
;
10772 kb
->Vdefault_minibuffer_frame
= Qnil
;
10776 * Destroy the contents of a kboard object, but not the object itself.
10777 * We use this just before deleting it, or if we're going to initialize
10778 * it a second time.
10784 if (kb
->kbd_macro_buffer
)
10785 xfree (kb
->kbd_macro_buffer
);
10788 #ifdef MULTI_KBOARD
10790 /* Free KB and memory referenced from it. */
10798 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
10801 *kbp
= kb
->next_kboard
;
10803 /* Prevent a dangling reference to KB. */
10804 if (kb
== current_kboard
10805 && FRAMEP (selected_frame
)
10806 && FRAME_LIVE_P (XFRAME (selected_frame
)))
10808 current_kboard
= XFRAME (selected_frame
)->kboard
;
10809 if (current_kboard
== kb
)
10817 #endif /* MULTI_KBOARD */
10822 /* This is correct before outermost invocation of the editor loop */
10823 command_loop_level
= -1;
10824 immediate_quit
= 0;
10825 quit_char
= Ctl ('g');
10826 Vunread_command_events
= Qnil
;
10827 unread_command_char
= -1;
10828 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
10830 recent_keys_index
= 0;
10831 kbd_fetch_ptr
= kbd_buffer
;
10832 kbd_store_ptr
= kbd_buffer
;
10834 do_mouse_tracking
= Qnil
;
10838 /* This means that command_loop_1 won't try to select anything the first
10840 internal_last_event_frame
= Qnil
;
10841 Vlast_event_frame
= internal_last_event_frame
;
10843 #ifdef MULTI_KBOARD
10844 current_kboard
= initial_kboard
;
10846 wipe_kboard (current_kboard
);
10847 init_kboard (current_kboard
);
10849 if (!noninteractive
)
10851 /* Before multi-tty support, these handlers used to be installed
10852 only if the current session was a tty session. Now an Emacs
10853 session may have multiple display types, so we always handle
10854 SIGINT. There is special code in interrupt_signal to exit
10855 Emacs on SIGINT when there are no termcap frames on the
10856 controlling terminal. */
10857 signal (SIGINT
, interrupt_signal
);
10858 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
10859 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
10860 SIGQUIT and we can't tell which one it will give us. */
10861 signal (SIGQUIT
, interrupt_signal
);
10862 #endif /* HAVE_TERMIO */
10864 /* Note SIGIO has been undef'd if FIONREAD is missing. */
10866 if (!noninteractive
)
10867 signal (SIGIO
, input_available_signal
);
10870 /* Use interrupt input by default, if it works and noninterrupt input
10871 has deficiencies. */
10873 #ifdef INTERRUPT_INPUT
10874 interrupt_input
= 1;
10876 interrupt_input
= 0;
10879 /* Our VMS input only works by interrupts, as of now. */
10881 interrupt_input
= 1;
10887 if (keyboard_init_hook
)
10888 (*keyboard_init_hook
) ();
10890 #ifdef POLL_FOR_INPUT
10891 poll_suppress_count
= 1;
10896 /* At least provide an escape route since C-g doesn't work. */
10897 signal (SIGINT
, interrupt_signal
);
10901 /* This type's only use is in syms_of_keyboard, to initialize the
10902 event header symbols and put properties on them. */
10903 struct event_head
{
10909 struct event_head head_table
[] = {
10910 {&Qmouse_movement
, "mouse-movement", &Qmouse_movement
},
10911 {&Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
},
10912 {&Qswitch_frame
, "switch-frame", &Qswitch_frame
},
10913 {&Qdelete_frame
, "delete-frame", &Qdelete_frame
},
10914 {&Qiconify_frame
, "iconify-frame", &Qiconify_frame
},
10915 {&Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
},
10916 /* `select-window' should be handled just like `switch-frame'
10917 in read_key_sequence. */
10918 {&Qselect_window
, "select-window", &Qswitch_frame
}
10922 syms_of_keyboard ()
10924 Vpre_help_message
= Qnil
;
10925 staticpro (&Vpre_help_message
);
10927 Vlispy_mouse_stem
= build_string ("mouse");
10928 staticpro (&Vlispy_mouse_stem
);
10931 QCimage
= intern (":image");
10932 staticpro (&QCimage
);
10934 staticpro (&Qhelp_echo
);
10935 Qhelp_echo
= intern ("help-echo");
10937 staticpro (&item_properties
);
10938 item_properties
= Qnil
;
10940 staticpro (&tool_bar_item_properties
);
10941 tool_bar_item_properties
= Qnil
;
10942 staticpro (&tool_bar_items_vector
);
10943 tool_bar_items_vector
= Qnil
;
10945 staticpro (&real_this_command
);
10946 real_this_command
= Qnil
;
10948 Qtimer_event_handler
= intern ("timer-event-handler");
10949 staticpro (&Qtimer_event_handler
);
10951 Qdisabled_command_function
= intern ("disabled-command-function");
10952 staticpro (&Qdisabled_command_function
);
10954 Qself_insert_command
= intern ("self-insert-command");
10955 staticpro (&Qself_insert_command
);
10957 Qforward_char
= intern ("forward-char");
10958 staticpro (&Qforward_char
);
10960 Qbackward_char
= intern ("backward-char");
10961 staticpro (&Qbackward_char
);
10963 Qdisabled
= intern ("disabled");
10964 staticpro (&Qdisabled
);
10966 Qundefined
= intern ("undefined");
10967 staticpro (&Qundefined
);
10969 Qpre_command_hook
= intern ("pre-command-hook");
10970 staticpro (&Qpre_command_hook
);
10972 Qpost_command_hook
= intern ("post-command-hook");
10973 staticpro (&Qpost_command_hook
);
10975 Qpost_command_idle_hook
= intern ("post-command-idle-hook");
10976 staticpro (&Qpost_command_idle_hook
);
10978 Qdeferred_action_function
= intern ("deferred-action-function");
10979 staticpro (&Qdeferred_action_function
);
10981 Qcommand_hook_internal
= intern ("command-hook-internal");
10982 staticpro (&Qcommand_hook_internal
);
10984 Qfunction_key
= intern ("function-key");
10985 staticpro (&Qfunction_key
);
10986 Qmouse_click
= intern ("mouse-click");
10987 staticpro (&Qmouse_click
);
10988 #if defined (WINDOWSNT) || defined (MAC_OS)
10989 Qlanguage_change
= intern ("language-change");
10990 staticpro (&Qlanguage_change
);
10992 Qdrag_n_drop
= intern ("drag-n-drop");
10993 staticpro (&Qdrag_n_drop
);
10995 Qsave_session
= intern ("save-session");
10996 staticpro(&Qsave_session
);
10998 Qusr1_signal
= intern ("usr1-signal");
10999 staticpro (&Qusr1_signal
);
11000 Qusr2_signal
= intern ("usr2-signal");
11001 staticpro (&Qusr2_signal
);
11003 Qmenu_enable
= intern ("menu-enable");
11004 staticpro (&Qmenu_enable
);
11005 Qmenu_alias
= intern ("menu-alias");
11006 staticpro (&Qmenu_alias
);
11007 QCenable
= intern (":enable");
11008 staticpro (&QCenable
);
11009 QCvisible
= intern (":visible");
11010 staticpro (&QCvisible
);
11011 QChelp
= intern (":help");
11012 staticpro (&QChelp
);
11013 QCfilter
= intern (":filter");
11014 staticpro (&QCfilter
);
11015 QCbutton
= intern (":button");
11016 staticpro (&QCbutton
);
11017 QCkeys
= intern (":keys");
11018 staticpro (&QCkeys
);
11019 QCkey_sequence
= intern (":key-sequence");
11020 staticpro (&QCkey_sequence
);
11021 QCtoggle
= intern (":toggle");
11022 staticpro (&QCtoggle
);
11023 QCradio
= intern (":radio");
11024 staticpro (&QCradio
);
11026 Qmode_line
= intern ("mode-line");
11027 staticpro (&Qmode_line
);
11028 Qvertical_line
= intern ("vertical-line");
11029 staticpro (&Qvertical_line
);
11030 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
11031 staticpro (&Qvertical_scroll_bar
);
11032 Qmenu_bar
= intern ("menu-bar");
11033 staticpro (&Qmenu_bar
);
11036 Qmouse_fixup_help_message
= intern ("mouse-fixup-help-message");
11037 staticpro (&Qmouse_fixup_help_message
);
11040 Qabove_handle
= intern ("above-handle");
11041 staticpro (&Qabove_handle
);
11042 Qhandle
= intern ("handle");
11043 staticpro (&Qhandle
);
11044 Qbelow_handle
= intern ("below-handle");
11045 staticpro (&Qbelow_handle
);
11046 Qup
= intern ("up");
11048 Qdown
= intern ("down");
11049 staticpro (&Qdown
);
11050 Qtop
= intern ("top");
11052 Qbottom
= intern ("bottom");
11053 staticpro (&Qbottom
);
11054 Qend_scroll
= intern ("end-scroll");
11055 staticpro (&Qend_scroll
);
11056 Qratio
= intern ("ratio");
11057 staticpro (&Qratio
);
11059 Qevent_kind
= intern ("event-kind");
11060 staticpro (&Qevent_kind
);
11061 Qevent_symbol_elements
= intern ("event-symbol-elements");
11062 staticpro (&Qevent_symbol_elements
);
11063 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
11064 staticpro (&Qevent_symbol_element_mask
);
11065 Qmodifier_cache
= intern ("modifier-cache");
11066 staticpro (&Qmodifier_cache
);
11068 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
11069 staticpro (&Qrecompute_lucid_menubar
);
11070 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
11071 staticpro (&Qactivate_menubar_hook
);
11073 Qpolling_period
= intern ("polling-period");
11074 staticpro (&Qpolling_period
);
11076 Qinput_method_function
= intern ("input-method-function");
11077 staticpro (&Qinput_method_function
);
11079 Qinput_method_exit_on_first_char
= intern ("input-method-exit-on-first-char");
11080 staticpro (&Qinput_method_exit_on_first_char
);
11081 Qinput_method_use_echo_area
= intern ("input-method-use-echo-area");
11082 staticpro (&Qinput_method_use_echo_area
);
11084 Fset (Qinput_method_exit_on_first_char
, Qnil
);
11085 Fset (Qinput_method_use_echo_area
, Qnil
);
11087 last_point_position_buffer
= Qnil
;
11090 struct event_head
*p
;
11092 for (p
= head_table
;
11093 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
11096 *p
->var
= intern (p
->name
);
11097 staticpro (p
->var
);
11098 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
11099 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
11103 button_down_location
= Fmake_vector (make_number (1), Qnil
);
11104 staticpro (&button_down_location
);
11105 mouse_syms
= Fmake_vector (make_number (1), Qnil
);
11106 staticpro (&mouse_syms
);
11107 wheel_syms
= Fmake_vector (make_number (2), Qnil
);
11108 staticpro (&wheel_syms
);
11112 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
11114 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
11115 for (i
= 0; i
< len
; i
++)
11116 if (modifier_names
[i
])
11117 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
11118 staticpro (&modifier_symbols
);
11121 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
11122 staticpro (&recent_keys
);
11124 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
11125 staticpro (&this_command_keys
);
11127 raw_keybuf
= Fmake_vector (make_number (30), Qnil
);
11128 staticpro (&raw_keybuf
);
11130 Qextended_command_history
= intern ("extended-command-history");
11131 Fset (Qextended_command_history
, Qnil
);
11132 staticpro (&Qextended_command_history
);
11134 accent_key_syms
= Qnil
;
11135 staticpro (&accent_key_syms
);
11137 func_key_syms
= Qnil
;
11138 staticpro (&func_key_syms
);
11140 drag_n_drop_syms
= Qnil
;
11141 staticpro (&drag_n_drop_syms
);
11143 unread_switch_frame
= Qnil
;
11144 staticpro (&unread_switch_frame
);
11146 internal_last_event_frame
= Qnil
;
11147 staticpro (&internal_last_event_frame
);
11149 read_key_sequence_cmd
= Qnil
;
11150 staticpro (&read_key_sequence_cmd
);
11152 menu_bar_one_keymap_changed_items
= Qnil
;
11153 staticpro (&menu_bar_one_keymap_changed_items
);
11155 defsubr (&Sevent_convert_list
);
11156 defsubr (&Sread_key_sequence
);
11157 defsubr (&Sread_key_sequence_vector
);
11158 defsubr (&Srecursive_edit
);
11160 defsubr (&Strack_mouse
);
11162 defsubr (&Sinput_pending_p
);
11163 defsubr (&Scommand_execute
);
11164 defsubr (&Srecent_keys
);
11165 defsubr (&Sthis_command_keys
);
11166 defsubr (&Sthis_command_keys_vector
);
11167 defsubr (&Sthis_single_command_keys
);
11168 defsubr (&Sthis_single_command_raw_keys
);
11169 defsubr (&Sreset_this_command_lengths
);
11170 defsubr (&Sclear_this_command_keys
);
11171 defsubr (&Ssuspend_emacs
);
11172 defsubr (&Sabort_recursive_edit
);
11173 defsubr (&Sexit_recursive_edit
);
11174 defsubr (&Srecursion_depth
);
11175 defsubr (&Stop_level
);
11176 defsubr (&Sdiscard_input
);
11177 defsubr (&Sopen_dribble_file
);
11178 defsubr (&Sset_input_mode
);
11179 defsubr (&Scurrent_input_mode
);
11180 defsubr (&Sexecute_extended_command
);
11181 defsubr (&Sposn_at_point
);
11182 defsubr (&Sposn_at_x_y
);
11184 DEFVAR_LISP ("last-command-char", &last_command_char
,
11185 doc
: /* Last input event that was part of a command. */);
11187 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
11188 doc
: /* Last input event that was part of a command. */);
11190 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
11191 doc
: /* Last input event in a command, except for mouse menu events.
11192 Mouse menus give back keys that don't look like mouse events;
11193 this variable holds the actual mouse event that led to the menu,
11194 so that you can determine whether the command was run by mouse or not. */);
11196 DEFVAR_LISP ("last-input-char", &last_input_char
,
11197 doc
: /* Last input event. */);
11199 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
11200 doc
: /* Last input event. */);
11202 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
11203 doc
: /* List of events to be read as the command input.
11204 These events are processed first, before actual keyboard input. */);
11205 Vunread_command_events
= Qnil
;
11207 DEFVAR_INT ("unread-command-char", &unread_command_char
,
11208 doc
: /* If not -1, an object to be read as next command input event. */);
11210 DEFVAR_LISP ("unread-post-input-method-events", &Vunread_post_input_method_events
,
11211 doc
: /* List of events to be processed as input by input methods.
11212 These events are processed after `unread-command-events', but
11213 before actual keyboard input. */);
11214 Vunread_post_input_method_events
= Qnil
;
11216 DEFVAR_LISP ("unread-input-method-events", &Vunread_input_method_events
,
11217 doc
: /* List of events to be processed as input by input methods.
11218 These events are processed after `unread-command-events', but
11219 before actual keyboard input. */);
11220 Vunread_input_method_events
= Qnil
;
11222 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
11223 doc
: /* Meta-prefix character code.
11224 Meta-foo as command input turns into this character followed by foo. */);
11225 XSETINT (meta_prefix_char
, 033);
11227 DEFVAR_KBOARD ("last-command", Vlast_command
,
11228 doc
: /* The last command executed.
11229 Normally a symbol with a function definition, but can be whatever was found
11230 in the keymap, or whatever the variable `this-command' was set to by that
11233 The value `mode-exit' is special; it means that the previous command
11234 read an event that told it to exit, and it did so and unread that event.
11235 In other words, the present command is the event that made the previous
11238 The value `kill-region' is special; it means that the previous command
11239 was a kill command. */);
11241 DEFVAR_KBOARD ("real-last-command", Vreal_last_command
,
11242 doc
: /* Same as `last-command', but never altered by Lisp code. */);
11244 DEFVAR_LISP ("this-command", &Vthis_command
,
11245 doc
: /* The command now being executed.
11246 The command can set this variable; whatever is put here
11247 will be in `last-command' during the following command. */);
11248 Vthis_command
= Qnil
;
11250 DEFVAR_LISP ("this-original-command", &Vthis_original_command
,
11251 doc
: /* The command bound to the current key sequence before remapping.
11252 It equals `this-command' if the original command was not remapped through
11253 any of the active keymaps. Otherwise, the value of `this-command' is the
11254 result of looking up the original command in the active keymaps. */);
11255 Vthis_original_command
= Qnil
;
11257 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
11258 doc
: /* *Number of input events between auto-saves.
11259 Zero means disable autosaving due to number of characters typed. */);
11260 auto_save_interval
= 300;
11262 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
11263 doc
: /* *Number of seconds idle time before auto-save.
11264 Zero or nil means disable auto-saving due to idleness.
11265 After auto-saving due to this many seconds of idle time,
11266 Emacs also does a garbage collection if that seems to be warranted. */);
11267 XSETFASTINT (Vauto_save_timeout
, 30);
11269 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes
,
11270 doc
: /* *Nonzero means echo unfinished commands after this many seconds of pause.
11271 The value may be integer or floating point. */);
11272 Vecho_keystrokes
= make_number (1);
11274 DEFVAR_INT ("polling-period", &polling_period
,
11275 doc
: /* *Interval between polling for input during Lisp execution.
11276 The reason for polling is to make C-g work to stop a running program.
11277 Polling is needed only when using X windows and SIGIO does not work.
11278 Polling is automatically disabled in all other cases. */);
11279 polling_period
= 2;
11281 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
11282 doc
: /* *Maximum time between mouse clicks to make a double-click.
11283 Measured in milliseconds. nil means disable double-click recognition;
11284 t means double-clicks have no time limit and are detected
11285 by position only. */);
11286 Vdouble_click_time
= make_number (500);
11288 DEFVAR_INT ("double-click-fuzz", &double_click_fuzz
,
11289 doc
: /* *Maximum mouse movement between clicks to make a double-click.
11290 On window-system frames, value is the number of pixels the mouse may have
11291 moved horizontally or vertically between two clicks to make a double-click.
11292 On non window-system frames, value is interpreted in units of 1/8 characters
11295 This variable is also the threshold for motion of the mouse
11296 to count as a drag. */);
11297 double_click_fuzz
= 3;
11299 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
11300 doc
: /* *Non-nil means inhibit local map menu bar menus. */);
11301 inhibit_local_menu_bar_menus
= 0;
11303 DEFVAR_INT ("num-input-keys", &num_input_keys
,
11304 doc
: /* Number of complete key sequences read as input so far.
11305 This includes key sequences read from keyboard macros.
11306 The number is effectively the number of interactive command invocations. */);
11307 num_input_keys
= 0;
11309 DEFVAR_INT ("num-nonmacro-input-events", &num_nonmacro_input_events
,
11310 doc
: /* Number of input events read from the keyboard so far.
11311 This does not include events generated by keyboard macros. */);
11312 num_nonmacro_input_events
= 0;
11314 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
11315 doc
: /* The frame in which the most recently read event occurred.
11316 If the last event came from a keyboard macro, this is set to `macro'. */);
11317 Vlast_event_frame
= Qnil
;
11319 /* This variable is set up in sysdep.c. */
11320 DEFVAR_LISP ("tty-erase-char", &Vtty_erase_char
,
11321 doc
: /* The ERASE character as set by the user with stty. */);
11323 DEFVAR_LISP ("help-char", &Vhelp_char
,
11324 doc
: /* Character to recognize as meaning Help.
11325 When it is read, do `(eval help-form)', and display result if it's a string.
11326 If the value of `help-form' is nil, this char can be read normally. */);
11327 XSETINT (Vhelp_char
, Ctl ('H'));
11329 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
11330 doc
: /* List of input events to recognize as meaning Help.
11331 These work just like the value of `help-char' (see that). */);
11332 Vhelp_event_list
= Qnil
;
11334 DEFVAR_LISP ("help-form", &Vhelp_form
,
11335 doc
: /* Form to execute when character `help-char' is read.
11336 If the form returns a string, that string is displayed.
11337 If `help-form' is nil, the help char is not recognized. */);
11340 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
11341 doc
: /* Command to run when `help-char' character follows a prefix key.
11342 This command is used only when there is no actual binding
11343 for that character after that prefix key. */);
11344 Vprefix_help_command
= Qnil
;
11346 DEFVAR_LISP ("top-level", &Vtop_level
,
11347 doc
: /* Form to evaluate when Emacs starts up.
11348 Useful to set before you dump a modified Emacs. */);
11351 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
11352 doc
: /* Translate table for keyboard input, or nil.
11353 If non-nil, the value should be a char-table. Each character read
11354 from the keyboard is looked up in this char-table. If the value found
11355 there is non-nil, then it is used instead of the actual input character.
11357 The value can also be a string or vector, but this is considered obsolete.
11358 If it is a string or vector of length N, character codes N and up are left
11359 untranslated. In a vector, an element which is nil means "no translation".
11361 This is applied to the characters supplied to input methods, not their
11362 output. See also `translation-table-for-input'. */);
11363 Vkeyboard_translate_table
= Qnil
;
11365 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
11366 doc
: /* Non-nil means to always spawn a subshell instead of suspending.
11367 \(Even if the operating system has support for stopping a process.\) */);
11368 cannot_suspend
= 0;
11370 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
11371 doc
: /* Non-nil means prompt with menus when appropriate.
11372 This is done when reading from a keymap that has a prompt string,
11373 for elements that have prompt strings.
11374 The menu is displayed on the screen
11375 if X menus were enabled at configuration
11376 time and the previous event was a mouse click prefix key.
11377 Otherwise, menu prompting uses the echo area. */);
11378 menu_prompting
= 1;
11380 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
11381 doc
: /* Character to see next line of menu prompt.
11382 Type this character while in a menu prompt to rotate around the lines of it. */);
11383 XSETINT (menu_prompt_more_char
, ' ');
11385 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
11386 doc
: /* A mask of additional modifier keys to use with every keyboard character.
11387 Emacs applies the modifiers of the character stored here to each keyboard
11388 character it reads. For example, after evaluating the expression
11389 (setq extra-keyboard-modifiers ?\\C-x)
11390 all input characters will have the control modifier applied to them.
11392 Note that the character ?\\C-@, equivalent to the integer zero, does
11393 not count as a control character; rather, it counts as a character
11394 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero
11395 cancels any modification. */);
11396 extra_keyboard_modifiers
= 0;
11398 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
11399 doc
: /* If an editing command sets this to t, deactivate the mark afterward.
11400 The command loop sets this to nil before each command,
11401 and tests the value when the command returns.
11402 Buffer modification stores t in this variable. */);
11403 Vdeactivate_mark
= Qnil
;
11405 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
11406 doc
: /* Temporary storage of pre-command-hook or post-command-hook. */);
11407 Vcommand_hook_internal
= Qnil
;
11409 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
11410 doc
: /* Normal hook run before each command is executed.
11411 If an unhandled error happens in running this hook,
11412 the hook value is set to nil, since otherwise the error
11413 might happen repeatedly and make Emacs nonfunctional. */);
11414 Vpre_command_hook
= Qnil
;
11416 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
11417 doc
: /* Normal hook run after each command is executed.
11418 If an unhandled error happens in running this hook,
11419 the hook value is set to nil, since otherwise the error
11420 might happen repeatedly and make Emacs nonfunctional. */);
11421 Vpost_command_hook
= Qnil
;
11423 DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook
,
11424 doc
: /* Normal hook run after each command is executed, if idle.
11425 Errors running the hook are caught and ignored. */);
11426 Vpost_command_idle_hook
= Qnil
;
11428 DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay
,
11429 doc
: /* Delay time before running `post-command-idle-hook'.
11430 This is measured in microseconds. */);
11431 post_command_idle_delay
= 100000;
11434 DEFVAR_LISP ("echo-area-clear-hook", ...,
11435 doc
: /* Normal hook run when clearing the echo area. */);
11437 Qecho_area_clear_hook
= intern ("echo-area-clear-hook");
11438 SET_SYMBOL_VALUE (Qecho_area_clear_hook
, Qnil
);
11440 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
11441 doc
: /* Non-nil means menu bar, specified Lucid style, needs to be recomputed. */);
11442 Vlucid_menu_bar_dirty_flag
= Qnil
;
11444 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
11445 doc
: /* List of menu bar items to move to the end of the menu bar.
11446 The elements of the list are event types that may have menu bar bindings. */);
11447 Vmenu_bar_final_items
= Qnil
;
11449 DEFVAR_KBOARD ("overriding-terminal-local-map",
11450 Voverriding_terminal_local_map
,
11451 doc
: /* Per-terminal keymap that overrides all other local keymaps.
11452 If this variable is non-nil, it is used as a keymap instead of the
11453 buffer's local map, and the minor mode keymaps and text property keymaps.
11454 It also replaces `overriding-local-map'.
11456 This variable is intended to let commands such as `universal-argument'
11457 set up a different keymap for reading the next command. */);
11459 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
11460 doc
: /* Keymap that overrides all other local keymaps.
11461 If this variable is non-nil, it is used as a keymap--replacing the
11462 buffer's local map, the minor mode keymaps, and char property keymaps. */);
11463 Voverriding_local_map
= Qnil
;
11465 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
11466 doc
: /* Non-nil means `overriding-local-map' applies to the menu bar.
11467 Otherwise, the menu bar continues to reflect the buffer's local map
11468 and the minor mode maps regardless of `overriding-local-map'. */);
11469 Voverriding_local_map_menu_flag
= Qnil
;
11471 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
11472 doc
: /* Keymap defining bindings for special events to execute at low level. */);
11473 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
11475 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
11476 doc
: /* *Non-nil means generate motion events for mouse motion. */);
11478 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
11479 doc
: /* Alist of system-specific X windows key symbols.
11480 Each element should have the form (N . SYMBOL) where N is the
11481 numeric keysym code (sans the \"system-specific\" bit 1<<28)
11482 and SYMBOL is its name. */);
11484 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
11485 doc
: /* List of deferred actions to be performed at a later time.
11486 The precise format isn't relevant here; we just check whether it is nil. */);
11487 Vdeferred_action_list
= Qnil
;
11489 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
11490 doc
: /* Function to call to handle deferred actions, after each command.
11491 This function is called with no arguments after each command
11492 whenever `deferred-action-list' is non-nil. */);
11493 Vdeferred_action_function
= Qnil
;
11495 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
11496 doc
: /* *Non-nil means show the equivalent key-binding when M-x command has one.
11497 The value can be a length of time to show the message for.
11498 If the value is non-nil and not a number, we wait 2 seconds. */);
11499 Vsuggest_key_bindings
= Qt
;
11501 DEFVAR_LISP ("timer-list", &Vtimer_list
,
11502 doc
: /* List of active absolute time timers in order of increasing time. */);
11503 Vtimer_list
= Qnil
;
11505 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
11506 doc
: /* List of active idle-time timers in order of increasing time. */);
11507 Vtimer_idle_list
= Qnil
;
11509 DEFVAR_LISP ("input-method-function", &Vinput_method_function
,
11510 doc
: /* If non-nil, the function that implements the current input method.
11511 It's called with one argument, a printing character that was just read.
11512 \(That means a character with code 040...0176.)
11513 Typically this function uses `read-event' to read additional events.
11514 When it does so, it should first bind `input-method-function' to nil
11515 so it will not be called recursively.
11517 The function should return a list of zero or more events
11518 to be used as input. If it wants to put back some events
11519 to be reconsidered, separately, by the input method,
11520 it can add them to the beginning of `unread-command-events'.
11522 The input method function can find in `input-method-previous-method'
11523 the previous echo area message.
11525 The input method function should refer to the variables
11526 `input-method-use-echo-area' and `input-method-exit-on-first-char'
11527 for guidance on what to do. */);
11528 Vinput_method_function
= Qnil
;
11530 DEFVAR_LISP ("input-method-previous-message",
11531 &Vinput_method_previous_message
,
11532 doc
: /* When `input-method-function' is called, hold the previous echo area message.
11533 This variable exists because `read-event' clears the echo area
11534 before running the input method. It is nil if there was no message. */);
11535 Vinput_method_previous_message
= Qnil
;
11537 DEFVAR_LISP ("show-help-function", &Vshow_help_function
,
11538 doc
: /* If non-nil, the function that implements the display of help.
11539 It's called with one argument, the help string to display. */);
11540 Vshow_help_function
= Qnil
;
11542 DEFVAR_LISP ("disable-point-adjustment", &Vdisable_point_adjustment
,
11543 doc
: /* If non-nil, suppress point adjustment after executing a command.
11545 After a command is executed, if point is moved into a region that has
11546 special properties (e.g. composition, display), we adjust point to
11547 the boundary of the region. But, when a command sets this variable to
11548 non-nil, we suppress the point adjustment.
11550 This variable is set to nil before reading a command, and is checked
11551 just after executing the command. */);
11552 Vdisable_point_adjustment
= Qnil
;
11554 DEFVAR_LISP ("global-disable-point-adjustment",
11555 &Vglobal_disable_point_adjustment
,
11556 doc
: /* *If non-nil, always suppress point adjustment.
11558 The default value is nil, in which case, point adjustment are
11559 suppressed only after special commands that set
11560 `disable-point-adjustment' (which see) to non-nil. */);
11561 Vglobal_disable_point_adjustment
= Qnil
;
11563 DEFVAR_BOOL ("update-menu-bindings", &update_menu_bindings
,
11564 doc
: /* Non-nil means updating menu bindings is allowed.
11565 A value of nil means menu bindings should not be updated.
11566 Used during Emacs' startup. */);
11567 update_menu_bindings
= 1;
11569 DEFVAR_LISP ("minibuffer-message-timeout", &Vminibuffer_message_timeout
,
11570 doc
: /* *How long to display an echo-area message when the minibuffer is active.
11571 If the value is not a number, such messages don't time out. */);
11572 Vminibuffer_message_timeout
= make_number (2);
11574 DEFVAR_LISP ("throw-on-input", &Vthrow_on_input
,
11575 doc
: /* If non-nil, any keyboard input throws to this symbol.
11576 The value of that variable is passed to `quit-flag' and later causes a
11577 peculiar kind of quitting. */);
11578 Vthrow_on_input
= Qnil
;
11582 keys_of_keyboard ()
11584 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
11585 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
11586 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
11587 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
11588 initial_define_key (meta_map
, 'x', "execute-extended-command");
11590 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
11591 "handle-delete-frame");
11592 /* Here we used to use `ignore-event' which would simple set prefix-arg to
11593 current-prefix-arg, as is done in `handle-switch-frame'.
11594 But `handle-switch-frame is not run from the special-map.
11595 Commands from that map are run in a special way that automatically
11596 preserves the prefix-arg. Restoring the prefix arg here is not just
11597 redundant but harmful:
11599 - current-prefix-arg is set to non-nil, prefix-arg is set to nil.
11600 - after the first prompt, the exit-minibuffer-hook is run which may
11601 iconify a frame and thus push a `iconify-frame' event.
11602 - after running exit-minibuffer-hook, current-prefix-arg is
11603 restored to the non-nil value it had before the prompt.
11604 - we enter the second prompt.
11605 current-prefix-arg is non-nil, prefix-arg is nil.
11606 - before running the first real event, we run the special iconify-frame
11607 event, but we pass the `special' arg to execute-command so
11608 current-prefix-arg and prefix-arg are left untouched.
11609 - here we foolishly copy the non-nil current-prefix-arg to prefix-arg.
11610 - the next key event will have a spuriously non-nil current-prefix-arg. */
11611 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
11613 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",
11615 /* Handling it at such a low-level causes read_key_sequence to get
11616 * confused because it doesn't realize that the current_buffer was
11617 * changed by read_char.
11619 * initial_define_lispy_key (Vspecial_event_map, "select-window",
11620 * "handle-select-window"); */
11621 initial_define_lispy_key (Vspecial_event_map
, "save-session",
11622 "handle-save-session");
11625 /* Mark the pointers in the kboard objects.
11626 Called by the Fgarbage_collector. */
11632 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
11634 if (kb
->kbd_macro_buffer
)
11635 for (p
= kb
->kbd_macro_buffer
; p
< kb
->kbd_macro_ptr
; p
++)
11637 mark_object (kb
->Voverriding_terminal_local_map
);
11638 mark_object (kb
->Vlast_command
);
11639 mark_object (kb
->Vreal_last_command
);
11640 mark_object (kb
->Vprefix_arg
);
11641 mark_object (kb
->Vlast_prefix_arg
);
11642 mark_object (kb
->kbd_queue
);
11643 mark_object (kb
->defining_kbd_macro
);
11644 mark_object (kb
->Vlast_kbd_macro
);
11645 mark_object (kb
->Vsystem_key_alist
);
11646 mark_object (kb
->system_key_syms
);
11647 mark_object (kb
->Vdefault_minibuffer_frame
);
11648 mark_object (kb
->echo_string
);
11651 struct input_event
*event
;
11652 for (event
= kbd_fetch_ptr
; event
!= kbd_store_ptr
; event
++)
11654 if (event
== kbd_buffer
+ KBD_BUFFER_SIZE
)
11655 event
= kbd_buffer
;
11656 if (event
->kind
!= SELECTION_REQUEST_EVENT
11657 && event
->kind
!= SELECTION_CLEAR_EVENT
)
11659 mark_object (event
->x
);
11660 mark_object (event
->y
);
11662 mark_object (event
->frame_or_window
);
11663 mark_object (event
->arg
);
11668 /* arch-tag: 774e34d7-6d31-42f3-8397-e079a4e4c9ca
11669 (do not change this comment) */