1 /* Keyboard and mouse input; editor command loop.
2 Copyright (C) 1985,86,87,88,89,93,94,95,96 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Allow config.h to undefine symbols found here. */
29 #include "termhooks.h"
36 #include "dispextern.h"
38 #include "intervals.h"
39 #include "blockinput.h"
48 #include <sys/ioctl.h>
50 #endif /* not MSDOS */
52 #include "syssignal.h"
55 /* This is to get the definitions of the XK_ symbols. */
62 #endif /* HAVE_NTGUI */
64 /* Include systime.h after xterm.h to avoid double inclusion of time.h. */
69 /* Variables for blockinput.h: */
71 /* Non-zero if interrupt input is blocked right now. */
72 int interrupt_input_blocked
;
74 /* Nonzero means an input interrupt has arrived
75 during the current critical section. */
76 int interrupt_input_pending
;
79 /* File descriptor to use for input. */
82 #ifdef HAVE_WINDOW_SYSTEM
83 /* Make all keyboard buffers much bigger when using X windows. */
84 #define KBD_BUFFER_SIZE 4096
85 #else /* No X-windows, character input */
86 #define KBD_BUFFER_SIZE 256
87 #endif /* No X-windows */
89 /* Following definition copied from eval.c */
93 struct backtrace
*next
;
94 Lisp_Object
*function
;
95 Lisp_Object
*args
; /* Points to vector of args. */
96 int nargs
; /* length of vector. If nargs is UNEVALLED,
97 args points to slot holding list of
103 KBOARD
*initial_kboard
;
104 KBOARD
*current_kboard
;
108 KBOARD the_only_kboard
;
111 /* Non-nil disable property on a command means
112 do not execute it; call disabled-command-hook's value instead. */
113 Lisp_Object Qdisabled
, Qdisabled_command_hook
;
115 #define NUM_RECENT_KEYS (100)
116 int recent_keys_index
; /* Index for storing next element into recent_keys */
117 int total_keys
; /* Total number of elements stored into recent_keys */
118 Lisp_Object recent_keys
; /* A vector, holding the last 100 keystrokes */
120 /* Vector holding the key sequence that invoked the current command.
121 It is reused for each command, and it may be longer than the current
122 sequence; this_command_key_count indicates how many elements
123 actually mean something.
124 It's easier to staticpro a single Lisp_Object than an array. */
125 Lisp_Object this_command_keys
;
126 int this_command_key_count
;
128 /* Number of elements of this_command_keys
129 that precede this key sequence. */
130 int this_single_command_key_start
;
132 /* Record values of this_command_key_count and echo_length ()
133 before this command was read. */
134 static int before_command_key_count
;
135 static int before_command_echo_length
;
136 /* Values of before_command_key_count and before_command_echo_length
137 saved by reset-this-command-lengths. */
138 static int before_command_key_count_1
;
139 static int before_command_echo_length_1
;
140 /* Flag set by reset-this-command-lengths,
141 saying to reset the lengths when add_command_key is called. */
142 static int before_command_restore_flag
;
144 extern int minbuf_level
;
146 extern struct backtrace
*backtrace_list
;
148 /* Nonzero means do menu prompting. */
149 static int menu_prompting
;
151 /* Character to see next line of menu prompt. */
152 static Lisp_Object menu_prompt_more_char
;
154 /* For longjmp to where kbd input is being done. */
155 static jmp_buf getcjmp
;
157 /* True while doing kbd input. */
158 int waiting_for_input
;
160 /* True while displaying for echoing. Delays C-g throwing. */
163 /* True means we can start echoing at the next input pause
164 even though there is something in the echo area. */
165 static char *ok_to_echo_at_next_pause
;
167 /* Nonzero means disregard local maps for the menu bar. */
168 static int inhibit_local_menu_bar_menus
;
170 /* Nonzero means C-g should cause immediate error-signal. */
173 /* Character to recognize as the help char. */
174 Lisp_Object Vhelp_char
;
176 /* List of other event types to recognize as meaning "help". */
177 Lisp_Object Vhelp_event_list
;
179 /* Form to execute when help char is typed. */
180 Lisp_Object Vhelp_form
;
182 /* Command to run when the help character follows a prefix key. */
183 Lisp_Object Vprefix_help_command
;
185 /* List of items that should move to the end of the menu bar. */
186 Lisp_Object Vmenu_bar_final_items
;
188 /* Non-nil means show the equivalent key-binding for
189 any M-x command that has one.
190 The value can be a length of time to show the message for.
191 If the value is non-nil and not a number, we wait 2 seconds. */
192 Lisp_Object Vsuggest_key_bindings
;
194 /* Character that causes a quit. Normally C-g.
196 If we are running on an ordinary terminal, this must be an ordinary
197 ASCII char, since we want to make it our interrupt character.
199 If we are not running on an ordinary terminal, it still needs to be
200 an ordinary ASCII char. This character needs to be recognized in
201 the input interrupt handler. At this point, the keystroke is
202 represented as a struct input_event, while the desired quit
203 character is specified as a lispy event. The mapping from struct
204 input_events to lispy events cannot run in an interrupt handler,
205 and the reverse mapping is difficult for anything but ASCII
208 FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an
212 extern Lisp_Object current_global_map
;
213 extern int minibuf_level
;
215 /* If non-nil, this is a map that overrides all other local maps. */
216 Lisp_Object Voverriding_local_map
;
218 /* If non-nil, Voverriding_local_map applies to the menu bar. */
219 Lisp_Object Voverriding_local_map_menu_flag
;
221 /* Keymap that defines special misc events that should
222 be processed immediately at a low level. */
223 Lisp_Object Vspecial_event_map
;
225 /* Current depth in recursive edits. */
226 int command_loop_level
;
228 /* Total number of times command_loop has read a key sequence. */
231 /* Last input character read as a command. */
232 Lisp_Object last_command_char
;
234 /* Last input character read as a command, not counting menus
235 reached by the mouse. */
236 Lisp_Object last_nonmenu_event
;
238 /* Last input character read for any purpose. */
239 Lisp_Object last_input_char
;
241 /* If not Qnil, a list of objects to be read as subsequent command input. */
242 Lisp_Object Vunread_command_events
;
244 /* If not -1, an event to be read as subsequent command input. */
245 int unread_command_char
;
247 /* If not Qnil, this is a switch-frame event which we decided to put
248 off until the end of a key sequence. This should be read as the
249 next command input, after any unread_command_events.
251 read_key_sequence uses this to delay switch-frame events until the
252 end of the key sequence; Fread_char uses it to put off switch-frame
253 events until a non-ASCII event is acceptable as input. */
254 Lisp_Object unread_switch_frame
;
256 /* A mask of extra modifier bits to put into every keyboard char. */
257 int extra_keyboard_modifiers
;
259 /* Char to use as prefix when a meta character is typed in.
260 This is bound on entry to minibuffer in case ESC is changed there. */
262 Lisp_Object meta_prefix_char
;
264 /* Last size recorded for a current buffer which is not a minibuffer. */
265 static int last_non_minibuf_size
;
267 /* Number of idle seconds before an auto-save and garbage collection. */
268 static Lisp_Object Vauto_save_timeout
;
270 /* Total number of times read_char has returned. */
273 /* Total number of times read_char has returned, outside of macros. */
274 int num_nonmacro_input_chars
;
276 /* Auto-save automatically when this many characters have been typed
277 since the last time. */
279 static int auto_save_interval
;
281 /* Value of num_nonmacro_input_chars as of last auto save. */
285 /* The command being executed by the command loop.
286 Commands may set this, and the value set will be copied into
287 current_kboard->Vlast_command instead of the actual command. */
288 Lisp_Object this_command
;
290 /* The value of point when the last command was executed. */
291 int last_point_position
;
293 /* The buffer that was current when the last command was started. */
294 Lisp_Object last_point_position_buffer
;
297 /* The frame in which the last input event occurred, or Qmacro if the
298 last event came from a macro. We use this to determine when to
299 generate switch-frame events. This may be cleared by functions
300 like Fselect_frame, to make sure that a switch-frame event is
301 generated by the next character. */
302 Lisp_Object internal_last_event_frame
;
305 /* A user-visible version of the above, intended to allow users to
306 figure out where the last event came from, if the event doesn't
307 carry that information itself (i.e. if it was a character). */
308 Lisp_Object Vlast_event_frame
;
310 /* The timestamp of the last input event we received from the X server.
311 X Windows wants this for selection ownership. */
312 unsigned long last_event_timestamp
;
314 Lisp_Object Qself_insert_command
;
315 Lisp_Object Qforward_char
;
316 Lisp_Object Qbackward_char
;
317 Lisp_Object Qundefined
;
319 /* read_key_sequence stores here the command definition of the
320 key sequence that it reads. */
321 Lisp_Object read_key_sequence_cmd
;
323 /* Form to evaluate (if non-nil) when Emacs is started. */
324 Lisp_Object Vtop_level
;
326 /* User-supplied string to translate input characters through. */
327 Lisp_Object Vkeyboard_translate_table
;
329 /* Keymap mapping ASCII function key sequences onto their preferred forms. */
330 extern Lisp_Object Vfunction_key_map
;
332 /* Another keymap that maps key sequences into key sequences.
333 This one takes precedence over ordinary definitions. */
334 extern Lisp_Object Vkey_translation_map
;
336 /* Non-nil means deactivate the mark at end of this command. */
337 Lisp_Object Vdeactivate_mark
;
339 /* Menu bar specified in Lucid Emacs fashion. */
341 Lisp_Object Vlucid_menu_bar_dirty_flag
;
342 Lisp_Object Qrecompute_lucid_menubar
, Qactivate_menubar_hook
;
344 /* Hooks to run before and after each command. */
345 Lisp_Object Qpre_command_hook
, Vpre_command_hook
;
346 Lisp_Object Qpost_command_hook
, Vpost_command_hook
;
347 Lisp_Object Qcommand_hook_internal
, Vcommand_hook_internal
;
348 /* Hook run after a command if there's no more input soon. */
349 Lisp_Object Qpost_command_idle_hook
, Vpost_command_idle_hook
;
351 /* Delay time in microseconds before running post-command-idle-hook. */
352 int post_command_idle_delay
;
354 /* List of deferred actions to be performed at a later time.
355 The precise format isn't relevant here; we just check whether it is nil. */
356 Lisp_Object Vdeferred_action_list
;
358 /* Function to call to handle deferred actions, when there are any. */
359 Lisp_Object Vdeferred_action_function
;
360 Lisp_Object Qdeferred_action_function
;
362 /* File in which we write all commands we read. */
365 /* Nonzero if input is available. */
368 /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
369 keep 0200 bit in input chars. 0 to ignore the 0200 bit. */
373 extern char *pending_malloc_warning
;
375 /* Circular buffer for pre-read keyboard input. */
376 static struct input_event kbd_buffer
[KBD_BUFFER_SIZE
];
378 /* Vector to GCPRO the frames and windows mentioned in kbd_buffer.
380 The interrupt-level event handlers will never enqueue an event on a
381 frame which is not in Vframe_list, and once an event is dequeued,
382 internal_last_event_frame or the event itself points to the frame.
385 But while the event is sitting in the queue, it's completely
386 unprotected. Suppose the user types one command which will run for
387 a while and then delete a frame, and then types another event at
388 the frame that will be deleted, before the command gets around to
389 it. Suppose there are no references to this frame elsewhere in
390 Emacs, and a GC occurs before the second event is dequeued. Now we
391 have an event referring to a freed frame, which will crash Emacs
394 Similar things happen when an event on a scroll bar is enqueued; the
395 window may be deleted while the event is in the queue.
397 So, we use this vector to protect the frame_or_window field in the
398 event queue. That way, they'll be dequeued as dead frames or
399 windows, but still valid lisp objects.
401 If kbd_buffer[i].kind != no_event, then
402 (XVECTOR (kbd_buffer_frame_or_window)->contents[i]
403 == kbd_buffer[i].frame_or_window. */
404 static Lisp_Object kbd_buffer_frame_or_window
;
406 /* Pointer to next available character in kbd_buffer.
407 If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
408 This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the
409 next available char is in kbd_buffer[0]. */
410 static struct input_event
*kbd_fetch_ptr
;
412 /* Pointer to next place to store character in kbd_buffer. This
413 may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
414 character should go in kbd_buffer[0]. */
415 static volatile struct input_event
*kbd_store_ptr
;
417 /* The above pair of variables forms a "queue empty" flag. When we
418 enqueue a non-hook event, we increment kbd_store_ptr. When we
419 dequeue a non-hook event, we increment kbd_fetch_ptr. We say that
420 there is input available iff the two pointers are not equal.
422 Why not just have a flag set and cleared by the enqueuing and
423 dequeuing functions? Such a flag could be screwed up by interrupts
424 at inopportune times. */
426 /* If this flag is non-nil, we check mouse_moved to see when the
427 mouse moves, and motion events will appear in the input stream.
428 Otherwise, mouse motion is ignored. */
429 static Lisp_Object do_mouse_tracking
;
431 /* Symbols to head events. */
432 Lisp_Object Qmouse_movement
;
433 Lisp_Object Qscroll_bar_movement
;
434 Lisp_Object Qswitch_frame
;
435 Lisp_Object Qdelete_frame
;
436 Lisp_Object Qiconify_frame
;
437 Lisp_Object Qmake_frame_visible
;
439 /* Symbols to denote kinds of events. */
440 Lisp_Object Qfunction_key
;
441 Lisp_Object Qmouse_click
;
442 Lisp_Object Qtimer_event
;
443 /* Lisp_Object Qmouse_movement; - also an event header */
445 /* Properties of event headers. */
446 Lisp_Object Qevent_kind
;
447 Lisp_Object Qevent_symbol_elements
;
449 Lisp_Object Qmenu_enable
;
451 /* An event header symbol HEAD may have a property named
452 Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
453 BASE is the base, unmodified version of HEAD, and MODIFIERS is the
454 mask of modifiers applied to it. If present, this is used to help
455 speed up parse_modifiers. */
456 Lisp_Object Qevent_symbol_element_mask
;
458 /* An unmodified event header BASE may have a property named
459 Qmodifier_cache, which is an alist mapping modifier masks onto
460 modified versions of BASE. If present, this helps speed up
462 Lisp_Object Qmodifier_cache
;
464 /* Symbols to use for parts of windows. */
465 Lisp_Object Qmode_line
;
466 Lisp_Object Qvertical_line
;
467 Lisp_Object Qvertical_scroll_bar
;
468 Lisp_Object Qmenu_bar
;
470 extern Lisp_Object Qmenu_enable
;
472 Lisp_Object
recursive_edit_unwind (), command_loop ();
473 Lisp_Object
Fthis_command_keys ();
474 Lisp_Object Qextended_command_history
;
475 EMACS_TIME
timer_check ();
477 extern char *x_get_keysym_name ();
479 Lisp_Object Qpolling_period
;
481 /* List of absolute timers. Appears in order of next scheduled event. */
482 Lisp_Object Vtimer_list
;
484 /* List of idle time timers. Appears in order of next scheduled event. */
485 Lisp_Object Vtimer_idle_list
;
487 /* Incremented whenever a timer is run. */
490 extern Lisp_Object Vprint_level
, Vprint_length
;
492 /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt
494 EMACS_TIME
*input_available_clear_time
;
496 /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode.
497 Default is 1 if INTERRUPT_INPUT is defined. */
500 /* Nonzero while interrupts are temporarily deferred during redisplay. */
501 int interrupts_deferred
;
503 /* Nonzero means use ^S/^Q for flow control. */
506 /* Allow m- file to inhibit use of FIONREAD. */
507 #ifdef BROKEN_FIONREAD
511 /* We are unable to use interrupts if FIONREAD is not available,
512 so flush SIGIO so we won't try. */
519 /* If we support a window system, turn on the code to poll periodically
520 to detect C-g. It isn't actually used when doing interrupt input. */
521 #ifdef HAVE_WINDOW_SYSTEM
522 #define POLL_FOR_INPUT
525 /* Global variable declarations. */
527 /* Function for init_keyboard to call with no args (if nonzero). */
528 void (*keyboard_init_hook
) ();
530 static int read_avail_input ();
531 static void get_input_pending ();
532 static int readable_events ();
533 static Lisp_Object
read_char_x_menu_prompt ();
534 static Lisp_Object
read_char_minibuf_menu_prompt ();
535 static Lisp_Object
make_lispy_event ();
537 static Lisp_Object
make_lispy_movement ();
539 static Lisp_Object
modify_event_symbol ();
540 static Lisp_Object
make_lispy_switch_frame ();
541 static int parse_solitary_modifier ();
543 /* > 0 if we are to echo keystrokes. */
544 static int echo_keystrokes
;
546 /* Nonzero means don't try to suspend even if the operating system seems
548 static int cannot_suspend
;
550 #define min(a,b) ((a)<(b)?(a):(b))
551 #define max(a,b) ((a)>(b)?(a):(b))
553 /* Install the string STR as the beginning of the string of echoing,
554 so that it serves as a prompt for the next character.
555 Also start echoing. */
560 int len
= strlen (str
);
562 if (len
> ECHOBUFSIZE
- 4)
563 len
= ECHOBUFSIZE
- 4;
564 bcopy (str
, current_kboard
->echobuf
, len
);
565 current_kboard
->echoptr
= current_kboard
->echobuf
+ len
;
566 *current_kboard
->echoptr
= '\0';
568 current_kboard
->echo_after_prompt
= len
;
573 /* Add C to the echo string, if echoing is going on.
574 C can be a character, which is printed prettily ("M-C-x" and all that
575 jazz), or a symbol, whose name is printed. */
580 extern char *push_key_description ();
582 if (current_kboard
->immediate_echo
)
584 char *ptr
= current_kboard
->echoptr
;
586 if (ptr
!= current_kboard
->echobuf
)
589 /* If someone has passed us a composite event, use its head symbol. */
594 if (ptr
- current_kboard
->echobuf
> ECHOBUFSIZE
- 6)
597 ptr
= push_key_description (XINT (c
), ptr
);
599 else if (SYMBOLP (c
))
601 struct Lisp_String
*name
= XSYMBOL (c
)->name
;
602 if ((ptr
- current_kboard
->echobuf
) + name
->size
+ 4 > ECHOBUFSIZE
)
604 bcopy (name
->data
, ptr
, name
->size
);
608 if (current_kboard
->echoptr
== current_kboard
->echobuf
611 strcpy (ptr
, " (Type ? for further options)");
616 current_kboard
->echoptr
= ptr
;
622 /* Temporarily add a dash to the end of the echo string if it's not
623 empty, so that it serves as a mini-prompt for the very next character. */
627 if (!current_kboard
->immediate_echo
628 && current_kboard
->echoptr
== current_kboard
->echobuf
)
630 /* Do nothing if we just printed a prompt. */
631 if (current_kboard
->echo_after_prompt
632 == current_kboard
->echoptr
- current_kboard
->echobuf
)
634 /* Do nothing if not echoing at all. */
635 if (current_kboard
->echoptr
== 0)
638 /* Put a dash at the end of the buffer temporarily,
639 but make it go away when the next character is added. */
640 current_kboard
->echoptr
[0] = '-';
641 current_kboard
->echoptr
[1] = 0;
646 /* Display the current echo string, and begin echoing if not already
651 if (!current_kboard
->immediate_echo
)
654 current_kboard
->immediate_echo
= 1;
656 for (i
= 0; i
< this_command_key_count
; i
++)
659 c
= XVECTOR (this_command_keys
)->contents
[i
];
660 if (! (EVENT_HAS_PARAMETERS (c
)
661 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
668 message1_nolog (current_kboard
->echobuf
);
671 if (waiting_for_input
&& !NILP (Vquit_flag
))
672 quit_throw_to_read_char ();
675 /* Turn off echoing, for the start of a new command. */
679 current_kboard
->immediate_echo
= 0;
680 current_kboard
->echoptr
= current_kboard
->echobuf
;
681 current_kboard
->echo_after_prompt
= -1;
682 ok_to_echo_at_next_pause
= 0;
685 /* Return the length of the current echo string. */
690 return current_kboard
->echoptr
- current_kboard
->echobuf
;
693 /* Truncate the current echo message to its first LEN chars.
694 This and echo_char get used by read_key_sequence when the user
695 switches frames while entering a key sequence. */
701 current_kboard
->echobuf
[len
] = '\0';
702 current_kboard
->echoptr
= current_kboard
->echobuf
+ len
;
703 truncate_echo_area (len
);
707 /* Functions for manipulating this_command_keys. */
709 add_command_key (key
)
712 int size
= XVECTOR (this_command_keys
)->size
;
714 /* If reset-this-command-length was called recently, obey it now.
715 See the doc string of that function for an explanation of why. */
716 if (before_command_restore_flag
)
718 this_command_key_count
= before_command_key_count_1
;
719 if (this_command_key_count
< this_single_command_key_start
)
720 this_single_command_key_start
= this_command_key_count
;
721 echo_truncate (before_command_echo_length_1
);
722 before_command_restore_flag
= 0;
725 if (this_command_key_count
>= size
)
727 Lisp_Object new_keys
;
729 new_keys
= Fmake_vector (make_number (size
* 2), Qnil
);
730 bcopy (XVECTOR (this_command_keys
)->contents
,
731 XVECTOR (new_keys
)->contents
,
732 size
* sizeof (Lisp_Object
));
734 this_command_keys
= new_keys
;
737 XVECTOR (this_command_keys
)->contents
[this_command_key_count
++] = key
;
743 int count
= specpdl_ptr
- specpdl
;
746 if (command_loop_level
> 0)
748 specbind (Qstandard_output
, Qt
);
749 specbind (Qstandard_input
, Qt
);
752 val
= command_loop ();
754 Fsignal (Qquit
, Qnil
);
756 return unbind_to (count
, Qnil
);
759 /* When an auto-save happens, record the "time", and don't do again soon. */
763 last_auto_save
= num_nonmacro_input_chars
;
766 /* Make an auto save happen as soon as possible at command level. */
768 force_auto_save_soon ()
770 last_auto_save
= - auto_save_interval
- 1;
772 record_asynch_buffer_change ();
775 DEFUN ("recursive-edit", Frecursive_edit
, Srecursive_edit
, 0, 0, "",
776 "Invoke the editor command loop recursively.\n\
777 To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\
778 that tells this function to return.\n\
779 Alternately, `(throw 'exit t)' makes this function signal an error.\n\
780 This function is called by the editor initialization to begin editing.")
783 int count
= specpdl_ptr
- specpdl
;
786 command_loop_level
++;
787 update_mode_lines
= 1;
789 record_unwind_protect (recursive_edit_unwind
,
791 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
795 return unbind_to (count
, Qnil
);
799 recursive_edit_unwind (buffer
)
803 Fset_buffer (buffer
);
805 command_loop_level
--;
806 update_mode_lines
= 1;
814 #if 0 /* Theory: if there's anything in Vunread_command_events,
815 it will right away be read by read_key_sequence,
816 and then if we do switch KBOARDS, it will go into the side
817 queue then. So we don't need to do anything special here -- rms. */
818 if (CONSP (Vunread_command_events
))
820 current_kboard
->kbd_queue
821 = nconc2 (Vunread_command_events
, current_kboard
->kbd_queue
);
822 current_kboard
->kbd_queue_has_data
= 1;
824 Vunread_command_events
= Qnil
;
830 /* Switch to the single-kboard state, making current_kboard
831 the only KBOARD from which further input is accepted. */
834 single_kboard_state ()
841 /* Maintain a stack of kboards, so other parts of Emacs
842 can switch temporarily to the kboard of a given frame
843 and then revert to the previous status. */
848 struct kboard_stack
*next
;
851 static struct kboard_stack
*kboard_stack
;
854 push_frame_kboard (f
)
858 struct kboard_stack
*p
859 = (struct kboard_stack
*) xmalloc (sizeof (struct kboard_stack
));
861 p
->next
= kboard_stack
;
862 p
->kboard
= current_kboard
;
865 current_kboard
= FRAME_KBOARD (f
);
873 struct kboard_stack
*p
= kboard_stack
;
874 current_kboard
= p
->kboard
;
875 kboard_stack
= p
->next
;
880 /* Handle errors that are not handled at inner levels
881 by printing an error message and returning to the editor command loop. */
887 Lisp_Object old_level
, old_length
;
890 if (!NILP (executing_macro
))
892 if (executing_macro_iterations
== 1)
893 sprintf (macroerror
, "After 1 kbd macro iteration: ");
895 sprintf (macroerror
, "After %d kbd macro iterations: ",
896 executing_macro_iterations
);
901 Vstandard_output
= Qt
;
902 Vstandard_input
= Qt
;
903 Vexecuting_macro
= Qnil
;
904 executing_macro
= Qnil
;
905 current_kboard
->Vprefix_arg
= Qnil
;
908 /* Avoid unquittable loop if data contains a circular list. */
909 old_level
= Vprint_level
;
910 old_length
= Vprint_length
;
911 XSETFASTINT (Vprint_level
, 10);
912 XSETFASTINT (Vprint_length
, 10);
913 cmd_error_internal (data
, macroerror
);
914 Vprint_level
= old_level
;
915 Vprint_length
= old_length
;
919 Vinhibit_quit
= Qnil
;
924 return make_number (0);
927 cmd_error_internal (data
, context
)
935 echo_area_glyphs
= 0;
937 /* If the window system or terminal frame hasn't been initialized
938 yet, or we're not interactive, it's best to dump this message out
939 to stderr and exit. */
940 if (! FRAME_MESSAGE_BUF (selected_frame
)
942 stream
= Qexternal_debugging_output
;
951 write_string_1 (context
, -1, stream
);
953 print_error_message (data
, stream
);
955 /* If the window system or terminal frame hasn't been initialized
956 yet, or we're in -batch mode, this error should cause Emacs to exit. */
957 if (! FRAME_MESSAGE_BUF (selected_frame
)
961 Fkill_emacs (make_number (-1));
965 Lisp_Object
command_loop_1 ();
966 Lisp_Object
command_loop_2 ();
967 Lisp_Object
top_level_1 ();
969 /* Entry to editor-command-loop.
970 This level has the catches for exiting/returning to editor command loop.
971 It returns nil to exit recursive edit, t to abort it. */
976 if (command_loop_level
> 0 || minibuf_level
> 0)
978 return internal_catch (Qexit
, command_loop_2
, Qnil
);
983 internal_catch (Qtop_level
, top_level_1
, Qnil
);
984 internal_catch (Qtop_level
, command_loop_2
, Qnil
);
986 /* End of file in -batch run causes exit here. */
992 /* Here we catch errors in execution of commands within the
993 editing loop, and reenter the editing loop.
994 When there is an error, cmd_error runs and returns a non-nil
995 value to us. A value of nil means that cmd_loop_1 itself
996 returned due to end of file (or end of kbd macro). */
1001 register Lisp_Object val
;
1004 val
= internal_condition_case (command_loop_1
, Qerror
, cmd_error
);
1005 while (!NILP (val
));
1013 return Feval (Vtop_level
);
1019 /* On entry to the outer level, run the startup file */
1020 if (!NILP (Vtop_level
))
1021 internal_condition_case (top_level_2
, Qerror
, cmd_error
);
1022 else if (!NILP (Vpurify_flag
))
1023 message ("Bare impure Emacs (standard Lisp code not loaded)");
1025 message ("Bare Emacs (standard Lisp code not loaded)");
1029 DEFUN ("top-level", Ftop_level
, Stop_level
, 0, 0, "",
1030 "Exit all recursive editing levels.")
1033 Fthrow (Qtop_level
, Qnil
);
1036 DEFUN ("exit-recursive-edit", Fexit_recursive_edit
, Sexit_recursive_edit
, 0, 0, "",
1037 "Exit from the innermost recursive edit or minibuffer.")
1040 if (command_loop_level
> 0 || minibuf_level
> 0)
1041 Fthrow (Qexit
, Qnil
);
1043 error ("No recursive edit is in progress");
1046 DEFUN ("abort-recursive-edit", Fabort_recursive_edit
, Sabort_recursive_edit
, 0, 0, "",
1047 "Abort the command that requested this recursive edit or minibuffer input.")
1050 if (command_loop_level
> 0 || minibuf_level
> 0)
1053 error ("No recursive edit is in progress");
1056 /* This is the actual command reading loop,
1057 sans error-handling encapsulation. */
1059 Lisp_Object
Fcommand_execute ();
1060 static int read_key_sequence ();
1061 void safe_run_hooks ();
1066 Lisp_Object cmd
, tem
;
1069 Lisp_Object keybuf
[30];
1074 struct buffer
*prev_buffer
;
1076 int was_locked
= single_kboard
;
1079 current_kboard
->Vprefix_arg
= Qnil
;
1080 Vdeactivate_mark
= Qnil
;
1081 waiting_for_input
= 0;
1086 this_command_key_count
= 0;
1087 this_single_command_key_start
= 0;
1089 /* Make sure this hook runs after commands that get errors and
1090 throw to top level. */
1091 /* Note that the value cell will never directly contain nil
1092 if the symbol is a local variable. */
1093 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1094 safe_run_hooks (Qpost_command_hook
);
1096 if (!NILP (Vdeferred_action_list
))
1097 call0 (Vdeferred_action_function
);
1099 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1101 if (NILP (Vunread_command_events
)
1102 && NILP (Vexecuting_macro
)
1103 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1)))
1104 safe_run_hooks (Qpost_command_idle_hook
);
1107 /* Do this after running Vpost_command_hook, for consistency. */
1108 current_kboard
->Vlast_command
= this_command
;
1112 /* Make sure the current window's buffer is selected. */
1113 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1114 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1116 /* Display any malloc warning that just came out. Use while because
1117 displaying one warning can cause another. */
1119 while (pending_malloc_warning
)
1120 display_malloc_warning ();
1124 Vdeactivate_mark
= Qnil
;
1126 /* If minibuffer on and echo area in use,
1127 wait 2 sec and redraw minibuffer. */
1129 if (minibuf_level
&& echo_area_glyphs
1130 && EQ (minibuf_window
, echo_area_window
))
1132 /* Bind inhibit-quit to t so that C-g gets read in
1133 rather than quitting back to the minibuffer. */
1134 int count
= specpdl_ptr
- specpdl
;
1135 specbind (Qinhibit_quit
, Qt
);
1137 Fsit_for (make_number (2), Qnil
, Qnil
);
1138 /* Clear the echo area. */
1141 unbind_to (count
, Qnil
);
1143 /* If a C-g came in before, treat it as input now. */
1144 if (!NILP (Vquit_flag
))
1147 Vunread_command_events
= Fcons (make_number (quit_char
), Qnil
);
1152 alloca (0); /* Cause a garbage collection now */
1153 /* Since we can free the most stuff here. */
1154 #endif /* C_ALLOCA */
1158 /* Select the frame that the last event came from. Usually,
1159 switch-frame events will take care of this, but if some lisp
1160 code swallows a switch-frame event, we'll fix things up here.
1161 Is this a good idea? */
1162 if (FRAMEP (internal_last_event_frame
)
1163 && XFRAME (internal_last_event_frame
) != selected_frame
)
1164 Fselect_frame (internal_last_event_frame
, Qnil
);
1167 /* If it has changed current-menubar from previous value,
1168 really recompute the menubar from the value. */
1169 if (! NILP (Vlucid_menu_bar_dirty_flag
)
1170 && !NILP (Ffboundp (Qrecompute_lucid_menubar
)))
1171 call0 (Qrecompute_lucid_menubar
);
1173 before_command_key_count
= this_command_key_count
;
1174 before_command_echo_length
= echo_length ();
1176 this_command
= Qnil
;
1178 /* Read next key sequence; i gets its length. */
1179 i
= read_key_sequence (keybuf
, sizeof keybuf
/ sizeof keybuf
[0],
1184 /* Now we have read a key sequence of length I,
1185 or else I is 0 and we found end of file. */
1187 if (i
== 0) /* End of file -- happens only in */
1188 return Qnil
; /* a kbd macro, at the end. */
1189 /* -1 means read_key_sequence got a menu that was rejected.
1190 Just loop around and read another command. */
1194 this_command_key_count
= 0;
1195 this_single_command_key_start
= 0;
1199 last_command_char
= keybuf
[i
- 1];
1201 /* If the previous command tried to force a specific window-start,
1202 forget about that, in case this command moves point far away
1203 from that position. But also throw away beg_unchanged and
1204 end_unchanged information in that case, so that redisplay will
1205 update the whole window properly. */
1206 if (!NILP (XWINDOW (selected_window
)->force_start
))
1208 XWINDOW (selected_window
)->force_start
= Qnil
;
1209 beg_unchanged
= end_unchanged
= 0;
1212 cmd
= read_key_sequence_cmd
;
1213 if (!NILP (Vexecuting_macro
))
1215 if (!NILP (Vquit_flag
))
1217 Vexecuting_macro
= Qt
;
1218 QUIT
; /* Make some noise. */
1219 /* Will return since macro now empty. */
1223 /* Do redisplay processing after this command except in special
1224 cases identified below that set no_redisplay to 1.
1225 (actually, there's currently no way to prevent the redisplay,
1226 and no_redisplay is ignored.
1227 Perhaps someday we will really implement it.) */
1230 prev_buffer
= current_buffer
;
1231 prev_modiff
= MODIFF
;
1232 last_point_position
= PT
;
1233 XSETBUFFER (last_point_position_buffer
, prev_buffer
);
1235 /* Execute the command. */
1238 /* Note that the value cell will never directly contain nil
1239 if the symbol is a local variable. */
1240 if (!NILP (Vpre_command_hook
) && !NILP (Vrun_hooks
))
1241 safe_run_hooks (Qpre_command_hook
);
1243 if (NILP (this_command
))
1245 /* nil means key is undefined. */
1247 current_kboard
->defining_kbd_macro
= Qnil
;
1248 update_mode_lines
= 1;
1249 current_kboard
->Vprefix_arg
= Qnil
;
1253 if (NILP (current_kboard
->Vprefix_arg
) && ! no_direct
)
1255 /* Recognize some common commands in common situations and
1256 do them directly. */
1257 if (EQ (this_command
, Qforward_char
) && PT
< ZV
)
1259 struct Lisp_Char_Table
*dp
1260 = window_display_table (XWINDOW (selected_window
));
1261 lose
= FETCH_CHAR (PT
);
1264 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1265 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1266 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1267 && (lose
>= 0x20 && lose
< 0x7f)))
1268 : (lose
>= 0x20 && lose
< 0x7f))
1269 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1271 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1273 && !windows_or_buffers_changed
1274 && EQ (current_buffer
->selective_display
, Qnil
)
1275 && !detect_input_pending ()
1276 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1277 && NILP (Vexecuting_macro
))
1278 no_redisplay
= direct_output_forward_char (1);
1281 else if (EQ (this_command
, Qbackward_char
) && PT
> BEGV
)
1283 struct Lisp_Char_Table
*dp
1284 = window_display_table (XWINDOW (selected_window
));
1286 lose
= FETCH_CHAR (PT
);
1288 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1289 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1290 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1291 && (lose
>= 0x20 && lose
< 0x7f)))
1292 : (lose
>= 0x20 && lose
< 0x7f))
1293 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1295 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1297 && !windows_or_buffers_changed
1298 && EQ (current_buffer
->selective_display
, Qnil
)
1299 && !detect_input_pending ()
1300 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1301 && NILP (Vexecuting_macro
))
1302 no_redisplay
= direct_output_forward_char (-1);
1305 else if (EQ (this_command
, Qself_insert_command
)
1306 /* Try this optimization only on ascii keystrokes. */
1307 && INTEGERP (last_command_char
))
1309 unsigned char c
= XINT (last_command_char
);
1312 if (NILP (Vexecuting_macro
)
1313 && !EQ (minibuf_window
, selected_window
))
1315 if (!nonundocount
|| nonundocount
>= 20)
1322 lose
= ((XFASTINT (XWINDOW (selected_window
)->last_modified
)
1324 || (XFASTINT (XWINDOW (selected_window
)->last_point
)
1326 || MODIFF
<= SAVE_MODIFF
1327 || windows_or_buffers_changed
1328 || !EQ (current_buffer
->selective_display
, Qnil
)
1329 || detect_input_pending ()
1330 || !NILP (XWINDOW (selected_window
)->column_number_displayed
)
1331 || !NILP (Vexecuting_macro
));
1332 value
= internal_self_insert (c
, 0);
1339 && (PT
== ZV
|| FETCH_CHAR (PT
) == '\n'))
1341 struct Lisp_Char_Table
*dp
1342 = window_display_table (XWINDOW (selected_window
));
1349 obj
= DISP_CHAR_VECTOR (dp
, lose
);
1352 /* Do it only for char codes
1353 that by default display as themselves. */
1354 if (lose
>= 0x20 && lose
<= 0x7e)
1355 no_redisplay
= direct_output_for_insert (lose
);
1357 else if (VECTORP (obj
)
1358 && XVECTOR (obj
)->size
== 1
1359 && (obj
= XVECTOR (obj
)->contents
[0],
1361 /* Insist face not specified in glyph. */
1362 && (XINT (obj
) & ((-1) << 8)) == 0)
1364 = direct_output_for_insert (XINT (obj
));
1368 if (lose
>= 0x20 && lose
<= 0x7e)
1369 no_redisplay
= direct_output_for_insert (lose
);
1376 /* Here for a command that isn't executed directly */
1379 if (NILP (current_kboard
->Vprefix_arg
))
1381 Fcommand_execute (this_command
, Qnil
, Qnil
, Qnil
);
1386 /* If there is a prefix argument,
1387 1) We don't want Vlast_command to be ``universal-argument''
1388 (that would be dumb), so don't set Vlast_command,
1389 2) we want to leave echoing on so that the prefix will be
1390 echoed as part of this key sequence, so don't call
1392 3) we want to leave this_command_key_count non-zero, so that
1393 read_char will realize that it is re-reading a character, and
1394 not echo it a second time.
1396 If the command didn't actually create a prefix arg,
1397 but is merely a frame event that is transparent to prefix args,
1398 then the above doesn't apply. */
1399 if (NILP (current_kboard
->Vprefix_arg
) || CONSP (last_command_char
))
1401 current_kboard
->Vlast_command
= this_command
;
1403 this_command_key_count
= 0;
1404 this_single_command_key_start
= 0;
1407 /* Note that the value cell will never directly contain nil
1408 if the symbol is a local variable. */
1409 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1410 safe_run_hooks (Qpost_command_hook
);
1412 if (!NILP (Vdeferred_action_list
))
1413 safe_run_hooks (Qdeferred_action_function
);
1415 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1417 if (NILP (Vunread_command_events
)
1418 && NILP (Vexecuting_macro
)
1419 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1)))
1420 safe_run_hooks (Qpost_command_idle_hook
);
1423 if (!NILP (current_buffer
->mark_active
) && !NILP (Vrun_hooks
))
1425 if (!NILP (Vdeactivate_mark
) && !NILP (Vtransient_mark_mode
))
1427 current_buffer
->mark_active
= Qnil
;
1428 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
1430 else if (current_buffer
!= prev_buffer
|| MODIFF
!= prev_modiff
)
1431 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
1435 /* Install chars successfully executed in kbd macro. */
1437 if (!NILP (current_kboard
->defining_kbd_macro
)
1438 && NILP (current_kboard
->Vprefix_arg
))
1439 finalize_kbd_macro_chars ();
1443 any_kboard_state ();
1448 /* Subroutine for safe_run_hooks: run the hook HOOK. */
1451 safe_run_hooks_1 (hook
)
1454 return call1 (Vrun_hooks
, Vinhibit_quit
);
1457 /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */
1460 safe_run_hooks_error (data
)
1463 Fset (Vinhibit_quit
, Qnil
);
1466 /* If we get an error while running the hook, cause the hook variable
1467 to be nil. Also inhibit quits, so that C-g won't cause the hook
1468 to mysteriously evaporate. */
1471 safe_run_hooks (hook
)
1475 int count
= specpdl_ptr
- specpdl
;
1476 specbind (Qinhibit_quit
, hook
);
1478 internal_condition_case (safe_run_hooks_1
, Qt
, safe_run_hooks_error
);
1480 unbind_to (count
, Qnil
);
1483 /* Number of seconds between polling for input. */
1486 /* Nonzero means polling for input is temporarily suppressed. */
1487 int poll_suppress_count
;
1489 /* Nonzero if polling_for_input is actually being used. */
1490 int polling_for_input
;
1492 #ifdef POLL_FOR_INPUT
1494 /* Handle an alarm once each second and read pending input
1495 so as to handle a C-g if it comces in. */
1498 input_poll_signal (signalnum
) /* If we don't have an argument, */
1499 int signalnum
; /* some compilers complain in signal calls. */
1501 /* This causes the call to start_polling at the end
1502 to do its job. It also arranges for a quit or error
1503 from within read_avail_input to resume polling. */
1504 poll_suppress_count
++;
1505 if (interrupt_input_blocked
== 0
1506 && !waiting_for_input
)
1507 read_avail_input (0);
1508 /* Turn on the SIGALRM handler and request another alarm. */
1514 /* Begin signals to poll for input, if they are appropriate.
1515 This function is called unconditionally from various places. */
1519 #ifdef POLL_FOR_INPUT
1520 if (read_socket_hook
&& !interrupt_input
)
1522 poll_suppress_count
--;
1523 if (poll_suppress_count
== 0)
1525 signal (SIGALRM
, input_poll_signal
);
1526 polling_for_input
= 1;
1527 alarm (polling_period
);
1533 /* Nonzero if we are using polling to handle input asynchronously. */
1536 input_polling_used ()
1538 #ifdef POLL_FOR_INPUT
1539 return read_socket_hook
&& !interrupt_input
;
1545 /* Turn off polling. */
1549 #ifdef POLL_FOR_INPUT
1550 if (read_socket_hook
&& !interrupt_input
)
1552 if (poll_suppress_count
== 0)
1554 polling_for_input
= 0;
1557 poll_suppress_count
++;
1562 /* Set the value of poll_suppress_count to COUNT
1563 and start or stop polling accordingly. */
1566 set_poll_suppress_count (count
)
1569 #ifdef POLL_FOR_INPUT
1570 if (count
== 0 && poll_suppress_count
!= 0)
1572 poll_suppress_count
= 1;
1575 else if (count
!= 0 && poll_suppress_count
== 0)
1579 poll_suppress_count
= count
;
1583 /* Bind polling_period to a value at least N.
1584 But don't decrease it. */
1586 bind_polling_period (n
)
1589 #ifdef POLL_FOR_INPUT
1590 int new = polling_period
;
1596 specbind (Qpolling_period
, make_number (new));
1597 /* Start a new alarm with the new period. */
1602 /* Apply the control modifier to CHARACTER. */
1608 /* Save the upper bits here. */
1609 int upper
= c
& ~0177;
1613 /* Everything in the columns containing the upper-case letters
1614 denotes a control character. */
1615 if (c
>= 0100 && c
< 0140)
1619 /* Set the shift modifier for a control char
1620 made from a shifted letter. But only for letters! */
1621 if (oc
>= 'A' && oc
<= 'Z')
1622 c
|= shift_modifier
;
1625 /* The lower-case letters denote control characters too. */
1626 else if (c
>= 'a' && c
<= 'z')
1629 /* Include the bits for control and shift
1630 only if the basic ASCII code can't indicate them. */
1634 /* Replace the high bits. */
1635 c
|= (upper
& ~ctrl_modifier
);
1642 /* Input of single characters from keyboard */
1644 Lisp_Object
print_help ();
1645 static Lisp_Object
kbd_buffer_get_event ();
1646 static void record_char ();
1649 static jmp_buf wrong_kboard_jmpbuf
;
1652 /* read a character from the keyboard; call the redisplay if needed */
1653 /* commandflag 0 means do not do auto-saving, but do do redisplay.
1654 -1 means do not do redisplay, but do do autosaving.
1657 /* The arguments MAPS and NMAPS are for menu prompting.
1658 MAPS is an array of keymaps; NMAPS is the length of MAPS.
1660 PREV_EVENT is the previous input event, or nil if we are reading
1661 the first event of a key sequence.
1663 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
1664 if we used a mouse menu to read the input, or zero otherwise. If
1665 USED_MOUSE_MENU is null, we don't dereference it.
1667 Value is t if we showed a menu and the user rejected it. */
1670 read_char (commandflag
, nmaps
, maps
, prev_event
, used_mouse_menu
)
1674 Lisp_Object prev_event
;
1675 int *used_mouse_menu
;
1677 register Lisp_Object c
;
1679 jmp_buf local_getcjmp
;
1681 int key_already_recorded
= 0;
1682 Lisp_Object tem
, save
;
1683 Lisp_Object also_record
;
1686 before_command_key_count
= this_command_key_count
;
1687 before_command_echo_length
= echo_length ();
1691 if (CONSP (Vunread_command_events
))
1693 c
= XCONS (Vunread_command_events
)->car
;
1694 Vunread_command_events
= XCONS (Vunread_command_events
)->cdr
;
1696 /* Undo what read_char_x_menu_prompt did when it unread
1697 additional keys returned by Fx_popup_menu. */
1699 && (SYMBOLP (XCONS (c
)->car
) || INTEGERP (XCONS (c
)->car
))
1700 && NILP (XCONS (c
)->cdr
))
1703 if (this_command_key_count
== 0)
1709 if (unread_command_char
!= -1)
1711 XSETINT (c
, unread_command_char
);
1712 unread_command_char
= -1;
1714 if (this_command_key_count
== 0)
1720 /* If there is no function key translated before
1721 reset-this-command-lengths takes effect, forget about it. */
1722 before_command_restore_flag
= 0;
1724 if (!NILP (Vexecuting_macro
))
1727 /* We set this to Qmacro; since that's not a frame, nobody will
1728 try to switch frames on us, and the selected window will
1731 Since this event came from a macro, it would be misleading to
1732 leave internal_last_event_frame set to wherever the last
1733 real event came from. Normally, a switch-frame event selects
1734 internal_last_event_frame after each command is read, but
1735 events read from a macro should never cause a new frame to be
1737 Vlast_event_frame
= internal_last_event_frame
= Qmacro
;
1740 /* Exit the macro if we are at the end.
1741 Also, some things replace the macro with t
1742 to force an early exit. */
1743 if (EQ (Vexecuting_macro
, Qt
)
1744 || executing_macro_index
>= XFASTINT (Flength (Vexecuting_macro
)))
1750 c
= Faref (Vexecuting_macro
, make_number (executing_macro_index
));
1751 if (STRINGP (Vexecuting_macro
)
1752 && (XINT (c
) & 0x80))
1753 XSETFASTINT (c
, CHAR_META
| (XINT (c
) & ~0x80));
1755 executing_macro_index
++;
1760 if (!NILP (unread_switch_frame
))
1762 c
= unread_switch_frame
;
1763 unread_switch_frame
= Qnil
;
1765 /* This event should make it into this_command_keys, and get echoed
1766 again, so we go to reread_first, rather than reread. */
1770 if (commandflag
>= 0 && !input_pending
1771 && !detect_input_pending_run_timers (0))
1774 /* Message turns off echoing unless more keystrokes turn it on again. */
1775 if (echo_area_glyphs
&& *echo_area_glyphs
1776 && echo_area_glyphs
!= current_kboard
->echobuf
1777 && ok_to_echo_at_next_pause
!= echo_area_glyphs
)
1780 /* If already echoing, continue. */
1783 /* Try reading a character via menu prompting in the minibuf.
1784 Try this before the sit-for, because the sit-for
1785 would do the wrong thing if we are supposed to do
1786 menu prompting. If EVENT_HAS_PARAMETERS then we are reading
1787 after a mouse event so don't try a minibuf menu. */
1789 if (nmaps
> 0 && INTERACTIVE
1790 && !NILP (prev_event
) && ! EVENT_HAS_PARAMETERS (prev_event
)
1791 /* Don't bring up a menu if we already have another event. */
1792 && NILP (Vunread_command_events
)
1793 && unread_command_char
< 0
1794 && !detect_input_pending_run_timers (0))
1796 c
= read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
);
1799 key_already_recorded
= 1;
1804 /* Make a longjmp point for quits to use, but don't alter getcjmp just yet.
1805 We will do that below, temporarily for short sections of code,
1806 when appropriate. local_getcjmp must be in effect
1807 around any call to sit_for or kbd_buffer_get_event;
1808 it *must not* be in effect when we call redisplay. */
1810 if (_setjmp (local_getcjmp
))
1812 XSETINT (c
, quit_char
);
1814 XSETFRAME (internal_last_event_frame
, selected_frame
);
1815 Vlast_event_frame
= internal_last_event_frame
;
1817 /* If we report the quit char as an event,
1818 don't do so more than once. */
1819 if (!NILP (Vinhibit_quit
))
1824 KBOARD
*kb
= FRAME_KBOARD (selected_frame
);
1825 if (kb
!= current_kboard
)
1827 Lisp_Object
*tailp
= &kb
->kbd_queue
;
1828 /* We shouldn't get here if we were in single-kboard mode! */
1831 while (CONSP (*tailp
))
1832 tailp
= &XCONS (*tailp
)->cdr
;
1835 *tailp
= Fcons (c
, Qnil
);
1836 kb
->kbd_queue_has_data
= 1;
1837 current_kboard
= kb
;
1838 longjmp (wrong_kboard_jmpbuf
, 1);
1845 timer_start_idle ();
1847 /* If in middle of key sequence and minibuffer not active,
1848 start echoing if enough time elapses. */
1850 if (minibuf_level
== 0 && !current_kboard
->immediate_echo
1851 && this_command_key_count
> 0
1853 && echo_keystrokes
> 0
1854 && (echo_area_glyphs
== 0 || *echo_area_glyphs
== 0
1855 || ok_to_echo_at_next_pause
== echo_area_glyphs
))
1859 /* After a mouse event, start echoing right away.
1860 This is because we are probably about to display a menu,
1861 and we don't want to delay before doing so. */
1862 if (EVENT_HAS_PARAMETERS (prev_event
))
1866 save_getcjmp (save_jump
);
1867 restore_getcjmp (local_getcjmp
);
1868 tem0
= sit_for (echo_keystrokes
, 0, 1, 1);
1869 restore_getcjmp (save_jump
);
1875 /* Maybe auto save due to number of keystrokes. */
1877 if (commandflag
!= 0
1878 && auto_save_interval
> 0
1879 && num_nonmacro_input_chars
- last_auto_save
> max (auto_save_interval
, 20)
1880 && !detect_input_pending_run_timers (0))
1882 Fdo_auto_save (Qnil
, Qnil
);
1883 /* Hooks can actually change some buffers in auto save. */
1887 /* Try reading using an X menu.
1888 This is never confused with reading using the minibuf
1889 because the recursive call of read_char in read_char_minibuf_menu_prompt
1890 does not pass on any keymaps. */
1892 if (nmaps
> 0 && INTERACTIVE
1893 && !NILP (prev_event
)
1894 && EVENT_HAS_PARAMETERS (prev_event
)
1895 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
)
1896 /* Don't bring up a menu if we already have another event. */
1897 && NILP (Vunread_command_events
)
1898 && unread_command_char
< 0)
1899 c
= read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
);
1901 /* Maybe autosave and/or garbage collect due to idleness. */
1903 if (INTERACTIVE
&& NILP (c
))
1905 int delay_level
, buffer_size
;
1907 /* Slow down auto saves logarithmically in size of current buffer,
1908 and garbage collect while we're at it. */
1909 if (! MINI_WINDOW_P (XWINDOW (selected_window
)))
1910 last_non_minibuf_size
= Z
- BEG
;
1911 buffer_size
= (last_non_minibuf_size
>> 8) + 1;
1913 while (buffer_size
> 64)
1914 delay_level
++, buffer_size
-= buffer_size
>> 2;
1915 if (delay_level
< 4) delay_level
= 4;
1916 /* delay_level is 4 for files under around 50k, 7 at 100k,
1917 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */
1919 /* Auto save if enough time goes by without input. */
1920 if (commandflag
!= 0
1921 && num_nonmacro_input_chars
> last_auto_save
1922 && INTEGERP (Vauto_save_timeout
)
1923 && XINT (Vauto_save_timeout
) > 0)
1927 save_getcjmp (save_jump
);
1928 restore_getcjmp (local_getcjmp
);
1929 tem0
= sit_for (delay_level
* XFASTINT (Vauto_save_timeout
) / 4,
1931 restore_getcjmp (save_jump
);
1935 Fdo_auto_save (Qnil
, Qnil
);
1937 /* If we have auto-saved and there is still no input
1938 available, garbage collect if there has been enough
1939 consing going on to make it worthwhile. */
1940 if (!detect_input_pending_run_timers (0)
1941 && consing_since_gc
> gc_cons_threshold
/ 2)
1942 Fgarbage_collect ();
1949 /* Read something from current KBOARD's side queue, if possible. */
1953 if (current_kboard
->kbd_queue_has_data
)
1955 if (!CONSP (current_kboard
->kbd_queue
))
1957 c
= XCONS (current_kboard
->kbd_queue
)->car
;
1958 current_kboard
->kbd_queue
1959 = XCONS (current_kboard
->kbd_queue
)->cdr
;
1960 if (NILP (current_kboard
->kbd_queue
))
1961 current_kboard
->kbd_queue_has_data
= 0;
1962 input_pending
= readable_events (0);
1964 if (EVENT_HAS_PARAMETERS (c
)
1965 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qswitch_frame
))
1966 internal_last_event_frame
= XCONS (XCONS (c
)->cdr
)->car
;
1967 Vlast_event_frame
= internal_last_event_frame
;
1973 /* If current_kboard's side queue is empty check the other kboards.
1974 If one of them has data that we have not yet seen here,
1975 switch to it and process the data waiting for it.
1977 Note: if the events queued up for another kboard
1978 have already been seen here, and therefore are not a complete command,
1979 the kbd_queue_has_data field is 0, so we skip that kboard here.
1980 That's to avoid an infinite loop switching between kboards here. */
1981 if (NILP (c
) && !single_kboard
)
1984 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
1985 if (kb
->kbd_queue_has_data
)
1987 current_kboard
= kb
;
1988 longjmp (wrong_kboard_jmpbuf
, 1);
1997 /* Finally, we read from the main queue,
1998 and if that gives us something we can't use yet, we put it on the
1999 appropriate side queue and try again. */
2005 /* Actually read a character, waiting if necessary. */
2006 save_getcjmp (save_jump
);
2007 restore_getcjmp (local_getcjmp
);
2008 c
= kbd_buffer_get_event (&kb
, used_mouse_menu
);
2009 restore_getcjmp (save_jump
);
2012 if (! NILP (c
) && (kb
!= current_kboard
))
2014 Lisp_Object
*tailp
= &kb
->kbd_queue
;
2015 while (CONSP (*tailp
))
2016 tailp
= &XCONS (*tailp
)->cdr
;
2019 *tailp
= Fcons (c
, Qnil
);
2020 kb
->kbd_queue_has_data
= 1;
2024 current_kboard
= kb
;
2025 longjmp (wrong_kboard_jmpbuf
, 1);
2030 /* Terminate Emacs in batch mode if at eof. */
2031 if (noninteractive
&& INTEGERP (c
) && XINT (c
) < 0)
2032 Fkill_emacs (make_number (1));
2036 /* Add in any extra modifiers, where appropriate. */
2037 if ((extra_keyboard_modifiers
& CHAR_CTL
)
2038 || ((extra_keyboard_modifiers
& 0177) < ' '
2039 && (extra_keyboard_modifiers
& 0177) != 0))
2040 XSETINT (c
, make_ctrl_char (XINT (c
)));
2042 /* Transfer any other modifier bits directly from
2043 extra_keyboard_modifiers to c. Ignore the actual character code
2044 in the low 16 bits of extra_keyboard_modifiers. */
2045 XSETINT (c
, XINT (c
) | (extra_keyboard_modifiers
& ~0xff7f & ~CHAR_CTL
));
2050 /* Now that we have read an event, Emacs is not idle--
2051 unless the event was a timer event (not used now). */
2052 if (! (CONSP (c
) && EQ (XCONS (c
)->car
, Qtimer_event
)))
2059 if (commandflag
>= 0
2060 && !input_pending
&& !detect_input_pending_run_timers (0))
2068 /* Buffer switch events are only for internal wakeups
2069 so don't show them to the user. */
2073 if (key_already_recorded
)
2076 /* Process special events within read_char
2077 and loop around to read another event. */
2080 tem
= get_keyelt (access_keymap (get_keymap_1 (Vspecial_event_map
, 0, 0),
2086 int was_locked
= single_kboard
;
2088 last_input_char
= c
;
2089 Fcommand_execute (tem
, Qnil
, Fvector (1, &last_input_char
), Qt
);
2091 /* Resume allowing input from any kboard, if that was true before. */
2093 any_kboard_state ();
2098 /* Wipe the echo area. */
2099 echo_area_glyphs
= 0;
2101 /* Handle things that only apply to characters. */
2104 /* If kbd_buffer_get_event gave us an EOF, return that. */
2108 if (STRINGP (Vkeyboard_translate_table
)
2109 && XSTRING (Vkeyboard_translate_table
)->size
> (unsigned) XFASTINT (c
))
2110 XSETINT (c
, XSTRING (Vkeyboard_translate_table
)->data
[XFASTINT (c
)]);
2111 else if ((VECTORP (Vkeyboard_translate_table
)
2112 && XVECTOR (Vkeyboard_translate_table
)->size
> (unsigned) XFASTINT (c
))
2113 || (CHAR_TABLE_P (Vkeyboard_translate_table
)
2114 && CHAR_TABLE_ORDINARY_SLOTS
> (unsigned) XFASTINT (c
)))
2117 d
= Faref (Vkeyboard_translate_table
, c
);
2118 /* nil in keyboard-translate-table means no translation. */
2124 /* If this event is a mouse click in the menu bar,
2125 return just menu-bar for now. Modify the mouse click event
2126 so we won't do this twice, then queue it up. */
2127 if (EVENT_HAS_PARAMETERS (c
)
2128 && CONSP (XCONS (c
)->cdr
)
2129 && CONSP (EVENT_START (c
))
2130 && CONSP (XCONS (EVENT_START (c
))->cdr
))
2134 posn
= POSN_BUFFER_POSN (EVENT_START (c
));
2135 /* Handle menu-bar events:
2136 insert the dummy prefix event `menu-bar'. */
2137 if (EQ (posn
, Qmenu_bar
))
2139 /* Change menu-bar to (menu-bar) as the event "position". */
2140 POSN_BUFFER_POSN (EVENT_START (c
)) = Fcons (posn
, Qnil
);
2143 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
2149 if (! NILP (also_record
))
2150 record_char (also_record
);
2154 before_command_key_count
= this_command_key_count
;
2155 before_command_echo_length
= echo_length ();
2157 /* Don't echo mouse motion events. */
2159 && ! (EVENT_HAS_PARAMETERS (c
)
2160 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
2163 if (! NILP (also_record
))
2164 echo_char (also_record
);
2165 /* Once we reread a character, echoing can happen
2166 the next time we pause to read a new one. */
2167 ok_to_echo_at_next_pause
= echo_area_glyphs
;
2170 /* Record this character as part of the current key. */
2171 add_command_key (c
);
2172 if (! NILP (also_record
))
2173 add_command_key (also_record
);
2175 /* Re-reading in the middle of a command */
2177 last_input_char
= c
;
2180 /* Process the help character specially if enabled */
2181 if (!NILP (Vhelp_form
) && help_char_p (c
))
2184 count
= specpdl_ptr
- specpdl
;
2186 record_unwind_protect (Fset_window_configuration
,
2187 Fcurrent_window_configuration (Qnil
));
2189 tem0
= Feval (Vhelp_form
);
2191 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
2195 c
= read_char (0, 0, 0, Qnil
, 0);
2196 while (BUFFERP (c
));
2197 /* Remove the help from the frame */
2198 unbind_to (count
, Qnil
);
2201 if (EQ (c
, make_number (040)))
2205 c
= read_char (0, 0, 0, Qnil
, 0);
2206 while (BUFFERP (c
));
2213 /* Return 1 if should recognize C as "the help character". */
2221 if (EQ (c
, Vhelp_char
))
2223 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
2224 if (EQ (c
, XCONS (tail
)->car
))
2229 /* Record the input event C in various ways. */
2236 XVECTOR (recent_keys
)->contents
[recent_keys_index
] = c
;
2237 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
2238 recent_keys_index
= 0;
2240 /* Write c to the dribble file. If c is a lispy event, write
2241 the event's symbol to the dribble file, in <brackets>. Bleaugh.
2242 If you, dear reader, have a better idea, you've got the source. :-) */
2247 if (XUINT (c
) < 0x100)
2248 putc (XINT (c
), dribble
);
2250 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
2254 Lisp_Object dribblee
;
2256 /* If it's a structured event, take the event header. */
2257 dribblee
= EVENT_HEAD (c
);
2259 if (SYMBOLP (dribblee
))
2261 putc ('<', dribble
);
2262 fwrite (XSYMBOL (dribblee
)->name
->data
, sizeof (char),
2263 XSYMBOL (dribblee
)->name
->size
,
2265 putc ('>', dribble
);
2272 store_kbd_macro_char (c
);
2274 num_nonmacro_input_chars
++;
2281 struct buffer
*old
= current_buffer
;
2282 Fprinc (object
, Qnil
);
2283 set_buffer_internal (XBUFFER (Vstandard_output
));
2284 call0 (intern ("help-mode"));
2285 set_buffer_internal (old
);
2289 /* Copy out or in the info on where C-g should throw to.
2290 This is used when running Lisp code from within get_char,
2291 in case get_char is called recursively.
2292 See read_process_output. */
2297 bcopy (getcjmp
, temp
, sizeof getcjmp
);
2300 restore_getcjmp (temp
)
2303 bcopy (temp
, getcjmp
, sizeof getcjmp
);
2308 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
2309 of this function. */
2312 tracking_off (old_value
)
2313 Lisp_Object old_value
;
2315 do_mouse_tracking
= old_value
;
2316 if (NILP (old_value
))
2318 /* Redisplay may have been preempted because there was input
2319 available, and it assumes it will be called again after the
2320 input has been processed. If the only input available was
2321 the sort that we have just disabled, then we need to call
2323 if (!readable_events (1))
2325 redisplay_preserve_echo_area ();
2326 get_input_pending (&input_pending
, 1);
2331 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
2332 "Evaluate BODY with mouse movement events enabled.\n\
2333 Within a `track-mouse' form, mouse motion generates input events that\n\
2334 you can read with `read-event'.\n\
2335 Normally, mouse motion is ignored.")
2339 int count
= specpdl_ptr
- specpdl
;
2342 record_unwind_protect (tracking_off
, do_mouse_tracking
);
2344 do_mouse_tracking
= Qt
;
2346 val
= Fprogn (args
);
2347 return unbind_to (count
, val
);
2350 /* If mouse has moved on some frame, return one of those frames.
2351 Return 0 otherwise. */
2356 Lisp_Object tail
, frame
;
2358 FOR_EACH_FRAME (tail
, frame
)
2360 if (XFRAME (frame
)->mouse_moved
)
2361 return XFRAME (frame
);
2367 #endif /* HAVE_MOUSE */
2369 /* Low level keyboard/mouse input.
2370 kbd_buffer_store_event places events in kbd_buffer, and
2371 kbd_buffer_get_event retrieves them. */
2373 /* Return true iff there are any events in the queue that read-char
2374 would return. If this returns false, a read-char would block. */
2376 readable_events (do_timers_now
)
2380 timer_check (do_timers_now
);
2382 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2385 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2390 if (current_kboard
->kbd_queue_has_data
)
2396 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
2397 if (kb
->kbd_queue_has_data
)
2403 /* Set this for debugging, to have a way to get out */
2408 event_to_kboard (event
)
2409 struct input_event
*event
;
2412 frame
= event
->frame_or_window
;
2414 frame
= XCONS (frame
)->car
;
2415 else if (WINDOWP (frame
))
2416 frame
= WINDOW_FRAME (XWINDOW (frame
));
2418 /* There are still some events that don't set this field.
2419 For now, just ignore the problem.
2420 Also ignore dead frames here. */
2421 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
2424 return FRAME_KBOARD (XFRAME (frame
));
2428 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
2431 kbd_buffer_store_event (event
)
2432 register struct input_event
*event
;
2434 if (event
->kind
== no_event
)
2437 if (event
->kind
== ascii_keystroke
)
2439 register int c
= event
->code
& 0377;
2441 if (event
->modifiers
& ctrl_modifier
)
2442 c
= make_ctrl_char (c
);
2444 c
|= (event
->modifiers
2445 & (meta_modifier
| alt_modifier
2446 | hyper_modifier
| super_modifier
));
2450 extern SIGTYPE
interrupt_signal ();
2453 struct input_event
*sp
;
2456 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
2457 kb
!= current_kboard
))
2460 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
2461 Fcons (make_number (c
), Qnil
));
2462 kb
->kbd_queue_has_data
= 1;
2463 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
2465 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
2468 if (event_to_kboard (sp
) == kb
)
2470 sp
->kind
= no_event
;
2471 sp
->frame_or_window
= Qnil
;
2479 /* If this results in a quit_char being returned to Emacs as
2480 input, set Vlast_event_frame properly. If this doesn't
2481 get returned to Emacs as an event, the next event read
2482 will set Vlast_event_frame again, so this is safe to do. */
2486 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
2488 focus
= event
->frame_or_window
;
2489 internal_last_event_frame
= focus
;
2490 Vlast_event_frame
= focus
;
2494 last_event_timestamp
= event
->timestamp
;
2495 interrupt_signal ();
2499 if (c
&& c
== stop_character
)
2505 /* Don't insert two buffer_switch_event's in a row.
2506 Just ignore the second one. */
2507 else if (event
->kind
== buffer_switch_event
2508 && kbd_fetch_ptr
!= kbd_store_ptr
2509 && kbd_store_ptr
->kind
== buffer_switch_event
)
2512 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
2513 kbd_store_ptr
= kbd_buffer
;
2515 /* Don't let the very last slot in the buffer become full,
2516 since that would make the two pointers equal,
2517 and that is indistinguishable from an empty buffer.
2518 Discard the event if it would fill the last slot. */
2519 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
2521 volatile struct input_event
*sp
= kbd_store_ptr
;
2522 sp
->kind
= event
->kind
;
2523 if (event
->kind
== selection_request_event
)
2525 /* We must not use the ordinary copying code for this case,
2526 since `part' is an enum and copying it might not copy enough
2528 bcopy (event
, (char *) sp
, sizeof (*event
));
2532 sp
->code
= event
->code
;
2533 sp
->part
= event
->part
;
2534 sp
->frame_or_window
= event
->frame_or_window
;
2535 sp
->modifiers
= event
->modifiers
;
2538 sp
->timestamp
= event
->timestamp
;
2540 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_store_ptr
2542 = event
->frame_or_window
);
2548 /* Read one event from the event buffer, waiting if necessary.
2549 The value is a Lisp object representing the event.
2550 The value is nil for an event that should be ignored,
2551 or that was handled here.
2552 We always read and discard one event. */
2555 kbd_buffer_get_event (kbp
, used_mouse_menu
)
2557 int *used_mouse_menu
;
2561 EMACS_TIME next_timer_delay
;
2567 *kbp
= current_kboard
;
2571 /* Wait until there is input available. */
2574 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2577 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2581 /* If the quit flag is set, then read_char will return
2582 quit_char, so that counts as "available input." */
2583 if (!NILP (Vquit_flag
))
2584 quit_throw_to_read_char ();
2586 /* One way or another, wait until input is available; then, if
2587 interrupt handlers have not read it, read it now. */
2590 wait_for_kbd_input ();
2592 /* Note SIGIO has been undef'd if FIONREAD is missing. */
2596 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2599 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2603 Lisp_Object minus_one
;
2605 XSETINT (minus_one
, -1);
2606 wait_reading_process_input (0, 0, minus_one
, 1);
2608 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
2609 /* Pass 1 for EXPECT since we just waited to have input. */
2610 read_avail_input (1);
2612 #endif /* not VMS */
2615 /* At this point, we know that there is a readable event available
2616 somewhere. If the event queue is empty, then there must be a
2617 mouse movement enabled and available. */
2618 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2620 struct input_event
*event
;
2622 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2626 last_event_timestamp
= event
->timestamp
;
2629 *kbp
= event_to_kboard (event
);
2631 *kbp
= current_kboard
; /* Better than returning null ptr? */
2633 *kbp
= &the_only_kboard
;
2638 /* These two kinds of events get special handling
2639 and don't actually appear to the command loop.
2640 We return nil for them. */
2641 if (event
->kind
== selection_request_event
)
2644 struct input_event copy
;
2646 /* Remove it from the buffer before processing it,
2647 since otherwise swallow_events will see it
2648 and process it again. */
2650 kbd_fetch_ptr
= event
+ 1;
2651 input_pending
= readable_events (0);
2652 x_handle_selection_request (©
);
2654 /* We're getting selection request events, but we don't have
2660 else if (event
->kind
== selection_clear_event
)
2663 struct input_event copy
;
2665 /* Remove it from the buffer before processing it. */
2667 kbd_fetch_ptr
= event
+ 1;
2668 input_pending
= readable_events (0);
2669 x_handle_selection_clear (©
);
2671 /* We're getting selection request events, but we don't have
2676 #if defined (HAVE_X11) || defined (HAVE_NTGUI)
2677 else if (event
->kind
== delete_window_event
)
2679 /* Make an event (delete-frame (FRAME)). */
2680 obj
= Fcons (event
->frame_or_window
, Qnil
);
2681 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
2682 kbd_fetch_ptr
= event
+ 1;
2684 else if (event
->kind
== iconify_event
)
2686 /* Make an event (iconify-frame (FRAME)). */
2687 obj
= Fcons (event
->frame_or_window
, Qnil
);
2688 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
2689 kbd_fetch_ptr
= event
+ 1;
2691 else if (event
->kind
== deiconify_event
)
2693 /* Make an event (make-frame-visible (FRAME)). */
2694 obj
= Fcons (event
->frame_or_window
, Qnil
);
2695 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
2696 kbd_fetch_ptr
= event
+ 1;
2699 else if (event
->kind
== buffer_switch_event
)
2701 /* The value doesn't matter here; only the type is tested. */
2702 XSETBUFFER (obj
, current_buffer
);
2703 kbd_fetch_ptr
= event
+ 1;
2705 #ifdef USE_X_TOOLKIT
2706 else if (event
->kind
== menu_bar_activate_event
)
2708 kbd_fetch_ptr
= event
+ 1;
2709 input_pending
= readable_events (0);
2710 if (FRAME_LIVE_P (XFRAME (event
->frame_or_window
)))
2711 x_activate_menubar (XFRAME (event
->frame_or_window
));
2714 /* Just discard these, by returning nil.
2715 With MULTI_KBOARD, these events are used as placeholders
2716 when we need to randomly delete events from the queue.
2717 (They shouldn't otherwise be found in the buffer,
2718 but on some machines it appears they do show up
2719 even without MULTI_KBOARD.) */
2720 else if (event
->kind
== no_event
)
2721 kbd_fetch_ptr
= event
+ 1;
2723 /* If this event is on a different frame, return a switch-frame this
2724 time, and leave the event in the queue for next time. */
2731 frame
= event
->frame_or_window
;
2733 frame
= XCONS (frame
)->car
;
2734 else if (WINDOWP (frame
))
2735 frame
= WINDOW_FRAME (XWINDOW (frame
));
2737 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
2741 if (! EQ (frame
, internal_last_event_frame
)
2742 && XFRAME (frame
) != selected_frame
)
2743 obj
= make_lispy_switch_frame (frame
);
2744 internal_last_event_frame
= frame
;
2745 #endif /* MULTI_FRAME */
2747 /* If we didn't decide to make a switch-frame event, go ahead
2748 and build a real event from the queue entry. */
2752 obj
= make_lispy_event (event
);
2753 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
2754 /* If this was a menu selection, then set the flag to inhibit
2755 writing to last_nonmenu_event. Don't do this if the event
2756 we're returning is (menu-bar), though; that indicates the
2757 beginning of the menu sequence, and we might as well leave
2758 that as the `event with parameters' for this selection. */
2759 if (event
->kind
== menu_bar_event
2760 && !(CONSP (obj
) && EQ (XCONS (obj
)->car
, Qmenu_bar
))
2762 *used_mouse_menu
= 1;
2765 /* Wipe out this event, to catch bugs. */
2766 event
->kind
= no_event
;
2767 XVECTOR (kbd_buffer_frame_or_window
)->contents
[event
- kbd_buffer
] = Qnil
;
2769 kbd_fetch_ptr
= event
+ 1;
2774 /* Try generating a mouse motion event. */
2775 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2777 FRAME_PTR f
= some_mouse_moved ();
2778 Lisp_Object bar_window
;
2779 enum scroll_bar_part part
;
2783 *kbp
= current_kboard
;
2784 /* Note that this uses F to determine which display to look at.
2785 If there is no valid info, it does not store anything
2786 so x remains nil. */
2788 (*mouse_position_hook
) (&f
, 0, &bar_window
, &part
, &x
, &y
, &time
);
2793 /* Decide if we should generate a switch-frame event. Don't
2794 generate switch-frame events for motion outside of all Emacs
2800 frame
= FRAME_FOCUS_FRAME (f
);
2802 XSETFRAME (frame
, f
);
2804 if (! EQ (frame
, internal_last_event_frame
)
2805 && XFRAME (frame
) != selected_frame
)
2806 obj
= make_lispy_switch_frame (frame
);
2807 internal_last_event_frame
= frame
;
2811 /* If we didn't decide to make a switch-frame event, go ahead and
2812 return a mouse-motion event. */
2813 if (!NILP (x
) && NILP (obj
))
2814 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
2816 #endif /* HAVE_MOUSE */
2818 /* We were promised by the above while loop that there was
2819 something for us to read! */
2822 input_pending
= readable_events (0);
2825 Vlast_event_frame
= internal_last_event_frame
;
2831 /* Process any events that are not user-visible,
2832 then return, without reading any user-visible events. */
2835 swallow_events (do_display
)
2840 while (kbd_fetch_ptr
!= kbd_store_ptr
)
2842 struct input_event
*event
;
2844 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2848 last_event_timestamp
= event
->timestamp
;
2850 /* These two kinds of events get special handling
2851 and don't actually appear to the command loop. */
2852 if (event
->kind
== selection_request_event
)
2855 struct input_event copy
;
2857 /* Remove it from the buffer before processing it,
2858 since otherwise swallow_events called recursively could see it
2859 and process it again. */
2861 kbd_fetch_ptr
= event
+ 1;
2862 input_pending
= readable_events (0);
2863 x_handle_selection_request (©
);
2865 /* We're getting selection request events, but we don't have
2871 else if (event
->kind
== selection_clear_event
)
2874 struct input_event copy
;
2876 /* Remove it from the buffer before processing it, */
2879 kbd_fetch_ptr
= event
+ 1;
2880 input_pending
= readable_events (0);
2881 x_handle_selection_clear (©
);
2883 /* We're getting selection request events, but we don't have
2888 /* Note that timer_event is currently never used. */
2889 else if (event
->kind
== timer_event
)
2891 Lisp_Object tem
, lisp_event
;
2892 int was_locked
= single_kboard
;
2894 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
2895 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
2897 lisp_event
= Fcons (Qtimer_event
,
2898 Fcons (Fcdr (event
->frame_or_window
), Qnil
));
2899 kbd_fetch_ptr
= event
+ 1;
2900 if (kbd_fetch_ptr
== kbd_store_ptr
)
2902 Fcommand_execute (tem
, Qnil
, Fvector (1, &lisp_event
), Qt
);
2905 redisplay_preserve_echo_area ();
2907 /* Resume allowing input from any kboard, if that was true before. */
2909 any_kboard_state ();
2915 old_timers_run
= timers_run
;
2916 get_input_pending (&input_pending
, 1);
2918 if (timers_run
!= old_timers_run
&& do_display
)
2919 redisplay_preserve_echo_area ();
2922 static EMACS_TIME timer_idleness_start_time
;
2924 /* Record the start of when Emacs is idle,
2925 for the sake of running idle-time timers. */
2931 /* If we are already in the idle state, do nothing. */
2932 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2935 EMACS_GET_TIME (timer_idleness_start_time
);
2937 /* Mark all idle-time timers as once again candidates for running. */
2938 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCONS (timers
)->cdr
)
2942 timer
= XCONS (timers
)->car
;
2944 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
2946 XVECTOR (timer
)->contents
[0] = Qnil
;
2950 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
2954 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
2957 /* This is only for debugging. */
2958 struct input_event last_timer_event
;
2960 /* Check whether a timer has fired. To prevent larger problems we simply
2961 disregard elements that are not proper timers. Do not make a circular
2962 timer list for the time being.
2964 Returns the number of seconds to wait until the next timer fires. If a
2965 timer is triggering now, return zero seconds.
2966 If no timer is active, return -1 seconds.
2968 If a timer is ripe, we run it, with quitting turned off.
2970 DO_IT_NOW is now ignored. It used to mean that we should
2971 run the timer directly instead of queueing a timer-event.
2972 Now we always run timers directly. */
2975 timer_check (do_it_now
)
2978 EMACS_TIME nexttime
;
2979 EMACS_TIME now
, idleness_now
;
2980 Lisp_Object timers
, idle_timers
, chosen_timer
;
2981 /* Nonzero if we generate some events. */
2982 int events_generated
= 0;
2983 struct gcpro gcpro1
, gcpro2
, gcpro3
;
2985 EMACS_SET_SECS (nexttime
, -1);
2986 EMACS_SET_USECS (nexttime
, -1);
2988 /* Always consider the ordinary timers. */
2989 timers
= Vtimer_list
;
2990 /* Consider the idle timers only if Emacs is idle. */
2991 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2992 idle_timers
= Vtimer_idle_list
;
2995 chosen_timer
= Qnil
;
2996 GCPRO3 (timers
, idle_timers
, chosen_timer
);
2998 if (CONSP (timers
) || CONSP (idle_timers
))
3000 EMACS_GET_TIME (now
);
3001 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
3002 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
3005 while (CONSP (timers
) || CONSP (idle_timers
))
3007 int triggertime
= EMACS_SECS (now
);
3008 Lisp_Object
*vector
;
3009 Lisp_Object timer
, idle_timer
;
3010 EMACS_TIME timer_time
, idle_timer_time
;
3011 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
3013 /* Skip past invalid timers and timers already handled. */
3016 timer
= XCONS (timers
)->car
;
3017 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
3019 timers
= XCONS (timers
)->cdr
;
3022 vector
= XVECTOR (timer
)->contents
;
3024 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
3025 || !INTEGERP (vector
[3])
3026 || ! NILP (vector
[0]))
3028 timers
= XCONS (timers
)->cdr
;
3032 if (!NILP (idle_timers
))
3034 timer
= XCONS (idle_timers
)->car
;
3035 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
3037 idle_timers
= XCONS (idle_timers
)->cdr
;
3040 vector
= XVECTOR (timer
)->contents
;
3042 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
3043 || !INTEGERP (vector
[3])
3044 || ! NILP (vector
[0]))
3046 idle_timers
= XCONS (idle_timers
)->cdr
;
3051 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
3052 based on the next ordinary timer.
3053 TIMER_DIFFERENCE is the distance in time from NOW to when
3054 this timer becomes ripe (negative if it's already ripe). */
3057 timer
= XCONS (timers
)->car
;
3058 vector
= XVECTOR (timer
)->contents
;
3059 EMACS_SET_SECS (timer_time
,
3060 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3061 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
3062 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
3065 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
3066 based on the next idle timer. */
3067 if (!NILP (idle_timers
))
3069 idle_timer
= XCONS (idle_timers
)->car
;
3070 vector
= XVECTOR (idle_timer
)->contents
;
3071 EMACS_SET_SECS (idle_timer_time
,
3072 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3073 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
3074 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
3077 /* Decide which timer is the next timer,
3078 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
3079 Also step down the list where we found that timer. */
3081 if (! NILP (timers
) && ! NILP (idle_timers
))
3084 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
3085 if (EMACS_TIME_NEG_P (temp
))
3087 chosen_timer
= timer
;
3088 timers
= XCONS (timers
)->cdr
;
3089 difference
= timer_difference
;
3093 chosen_timer
= idle_timer
;
3094 idle_timers
= XCONS (idle_timers
)->cdr
;
3095 difference
= idle_timer_difference
;
3098 else if (! NILP (timers
))
3100 chosen_timer
= timer
;
3101 timers
= XCONS (timers
)->cdr
;
3102 difference
= timer_difference
;
3106 chosen_timer
= idle_timer
;
3107 idle_timers
= XCONS (idle_timers
)->cdr
;
3108 difference
= idle_timer_difference
;
3110 vector
= XVECTOR (chosen_timer
)->contents
;
3112 /* If timer is rupe, run it if it hasn't been run. */
3113 if (EMACS_TIME_NEG_P (difference
)
3114 || (EMACS_SECS (difference
) == 0
3115 && EMACS_USECS (difference
) == 0))
3117 if (NILP (vector
[0]))
3119 /* Mark the timer as triggered to prevent problems if the lisp
3120 code fails to reschedule it right. */
3123 /* Run the timer or queue a timer event. */
3126 Lisp_Object tem
, event
;
3127 int was_locked
= single_kboard
;
3128 int count
= specpdl_ptr
- specpdl
;
3130 specbind (Qinhibit_quit
, Qt
);
3132 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
3133 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
3135 event
= Fcons (Qtimer_event
, Fcons (chosen_timer
, Qnil
));
3136 Fcommand_execute (tem
, Qnil
, Fvector (1, &event
), Qt
);
3139 unbind_to (count
, Qnil
);
3141 /* Resume allowing input from any kboard, if that was true before. */
3143 any_kboard_state ();
3145 /* Since we have handled the event,
3146 we don't need to tell the caller to wake up and do it. */
3151 /* Generate a timer event so the caller will handle it. */
3152 struct input_event event
;
3154 event
.kind
= timer_event
;
3155 event
.modifiers
= 0;
3156 event
.x
= event
.y
= Qnil
;
3157 event
.timestamp
= triggertime
;
3158 /* Store the timer in the frame slot. */
3159 event
.frame_or_window
3160 = Fcons (Fselected_frame (), chosen_timer
);
3161 kbd_buffer_store_event (&event
);
3163 last_timer_event
= event
;
3165 /* Tell caller to handle this event right away. */
3166 events_generated
= 1;
3167 EMACS_SET_SECS (nexttime
, 0);
3168 EMACS_SET_USECS (nexttime
, 0);
3170 /* Don't queue more than one event at once.
3171 When Emacs is ready for another, it will
3172 queue the next one. */
3180 /* When we encounter a timer that is still waiting,
3181 return the amount of time to wait before it is ripe. */
3184 /* But if we generated an event,
3185 tell the caller to handle it now. */
3186 if (events_generated
)
3192 /* No timers are pending in the future. */
3193 /* Return 0 if we generated an event, and -1 if not. */
3198 /* Caches for modify_event_symbol. */
3199 static Lisp_Object accent_key_syms
;
3200 static Lisp_Object func_key_syms
;
3201 static Lisp_Object mouse_syms
;
3203 /* This is a list of keysym codes for special "accent" characters.
3204 It parallels lispy_accent_keys. */
3206 static int lispy_accent_codes
[] =
3208 #ifdef XK_dead_circumflex
3213 #ifdef XK_dead_grave
3218 #ifdef XK_dead_tilde
3223 #ifdef XK_dead_diaeresis
3228 #ifdef XK_dead_macron
3233 #ifdef XK_dead_degree
3238 #ifdef XK_dead_acute
3243 #ifdef XK_dead_cedilla
3248 #ifdef XK_dead_breve
3253 #ifdef XK_dead_ogonek
3258 #ifdef XK_dead_caron
3263 #ifdef XK_dead_doubleacute
3264 XK_dead_doubleacute
,
3268 #ifdef XK_dead_abovedot
3275 /* This is a list of Lisp names for special "accent" characters.
3276 It parallels lispy_accent_codes. */
3278 static char *lispy_accent_keys
[] =
3296 #define FUNCTION_KEY_OFFSET 0x0
3298 char *lispy_function_keys
[] =
3302 0, /* VK_LBUTTON 0x01 */
3303 0, /* VK_RBUTTON 0x02 */
3304 "cancel", /* VK_CANCEL 0x03 */
3305 0, /* VK_MBUTTON 0x04 */
3307 0, 0, 0, /* 0x05 .. 0x07 */
3309 "backspace", /* VK_BACK 0x08 */
3310 "tab", /* VK_TAB 0x09 */
3312 0, 0, /* 0x0A .. 0x0B */
3314 "clear", /* VK_CLEAR 0x0C */
3315 "return", /* VK_RETURN 0x0D */
3317 0, 0, /* 0x0E .. 0x0F */
3319 "shift", /* VK_SHIFT 0x10 */
3320 "control", /* VK_CONTROL 0x11 */
3321 "menu", /* VK_MENU 0x12 */
3322 "pause", /* VK_PAUSE 0x13 */
3323 "capital", /* VK_CAPITAL 0x14 */
3325 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
3327 0, /* VK_ESCAPE 0x1B */
3329 0, 0, 0, 0, /* 0x1C .. 0x1F */
3331 0, /* VK_SPACE 0x20 */
3332 "prior", /* VK_PRIOR 0x21 */
3333 "next", /* VK_NEXT 0x22 */
3334 "end", /* VK_END 0x23 */
3335 "home", /* VK_HOME 0x24 */
3336 "left", /* VK_LEFT 0x25 */
3337 "up", /* VK_UP 0x26 */
3338 "right", /* VK_RIGHT 0x27 */
3339 "down", /* VK_DOWN 0x28 */
3340 "select", /* VK_SELECT 0x29 */
3341 "print", /* VK_PRINT 0x2A */
3342 "execute", /* VK_EXECUTE 0x2B */
3343 "snapshot", /* VK_SNAPSHOT 0x2C */
3344 "insert", /* VK_INSERT 0x2D */
3345 "delete", /* VK_DELETE 0x2E */
3346 "help", /* VK_HELP 0x2F */
3348 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
3350 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3352 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
3354 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
3356 0, 0, 0, 0, 0, 0, 0, 0, 0,
3357 0, 0, 0, 0, 0, 0, 0, 0, 0,
3358 0, 0, 0, 0, 0, 0, 0, 0,
3360 "lwindow", /* VK_LWIN 0x5B */
3361 "rwindow", /* VK_RWIN 0x5C */
3362 "apps", /* VK_APPS 0x5D */
3364 0, 0, /* 0x5E .. 0x5F */
3366 "kp-0", /* VK_NUMPAD0 0x60 */
3367 "kp-1", /* VK_NUMPAD1 0x61 */
3368 "kp-2", /* VK_NUMPAD2 0x62 */
3369 "kp-3", /* VK_NUMPAD3 0x63 */
3370 "kp-4", /* VK_NUMPAD4 0x64 */
3371 "kp-5", /* VK_NUMPAD5 0x65 */
3372 "kp-6", /* VK_NUMPAD6 0x66 */
3373 "kp-7", /* VK_NUMPAD7 0x67 */
3374 "kp-8", /* VK_NUMPAD8 0x68 */
3375 "kp-9", /* VK_NUMPAD9 0x69 */
3376 "kp-multiply", /* VK_MULTIPLY 0x6A */
3377 "kp-add", /* VK_ADD 0x6B */
3378 "kp-separator", /* VK_SEPARATOR 0x6C */
3379 "kp-subtract", /* VK_SUBTRACT 0x6D */
3380 "kp-decimal", /* VK_DECIMAL 0x6E */
3381 "kp-divide", /* VK_DIVIDE 0x6F */
3382 "f1", /* VK_F1 0x70 */
3383 "f2", /* VK_F2 0x71 */
3384 "f3", /* VK_F3 0x72 */
3385 "f4", /* VK_F4 0x73 */
3386 "f5", /* VK_F5 0x74 */
3387 "f6", /* VK_F6 0x75 */
3388 "f7", /* VK_F7 0x76 */
3389 "f8", /* VK_F8 0x77 */
3390 "f9", /* VK_F9 0x78 */
3391 "f10", /* VK_F10 0x79 */
3392 "f11", /* VK_F11 0x7A */
3393 "f12", /* VK_F12 0x7B */
3394 "f13", /* VK_F13 0x7C */
3395 "f14", /* VK_F14 0x7D */
3396 "f15", /* VK_F15 0x7E */
3397 "f16", /* VK_F16 0x7F */
3398 "f17", /* VK_F17 0x80 */
3399 "f18", /* VK_F18 0x81 */
3400 "f19", /* VK_F19 0x82 */
3401 "f20", /* VK_F20 0x83 */
3402 "f21", /* VK_F21 0x84 */
3403 "f22", /* VK_F22 0x85 */
3404 "f23", /* VK_F23 0x86 */
3405 "f24", /* VK_F24 0x87 */
3407 0, 0, 0, 0, /* 0x88 .. 0x8B */
3408 0, 0, 0, 0, /* 0x8C .. 0x8F */
3410 "kp-numlock", /* VK_NUMLOCK 0x90 */
3411 "scroll", /* VK_SCROLL 0x91 */
3413 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
3414 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
3415 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
3416 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
3417 "kp-end", /* VK_NUMPAD_END 0x96 */
3418 "kp-home", /* VK_NUMPAD_HOME 0x97 */
3419 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
3420 "kp-up", /* VK_NUMPAD_UP 0x99 */
3421 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
3422 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
3423 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
3424 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
3426 0, 0, /* 0x9E .. 0x9F */
3429 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
3430 * Used only as parameters to GetAsyncKeyState() and GetKeyState().
3431 * No other API or message will distinguish left and right keys this way.
3435 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3436 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3437 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3438 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3439 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3445 "attn", /* VK_ATTN 0xF6 */
3446 "crsel", /* VK_CRSEL 0xF7 */
3447 "exsel", /* VK_EXSEL 0xF8 */
3448 "ereof", /* VK_EREOF 0xF9 */
3449 "play", /* VK_PLAY 0xFA */
3450 "zoom", /* VK_ZOOM 0xFB */
3451 "noname", /* VK_NONAME 0xFC */
3452 "pa1", /* VK_PA1 0xFD */
3453 "oem_clear", /* VK_OEM_CLEAR 0xFE */
3458 #define FUNCTION_KEY_OFFSET 0xff00
3460 /* You'll notice that this table is arranged to be conveniently
3461 indexed by X Windows keysym values. */
3462 static char *lispy_function_keys
[] =
3464 /* X Keysym value */
3466 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */
3474 0, 0, 0, /* 0xff10 */
3476 0, 0, 0, 0, 0, 0, 0,
3479 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */
3480 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */
3481 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
3483 "home", /* 0xff50 */ /* IsCursorKey */
3494 "select", /* 0xff60 */ /* IsMiscFunctionKey */
3505 "break", /* 0xff6b */
3507 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0,
3509 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */
3510 "kp-space", /* 0xff80 */ /* IsKeypadKey */
3511 0, 0, 0, 0, 0, 0, 0, 0,
3512 "kp-tab", /* 0xff89 */
3514 "kp-enter", /* 0xff8d */
3516 "kp-f1", /* 0xff91 */
3520 "kp-home", /* 0xff95 */
3525 "kp-prior", /* kp-page-up */
3526 "kp-next", /* kp-page-down */
3532 0, 0, 0, 0, 0, 0, 0, 0, 0,
3533 "kp-multiply", /* 0xffaa */
3538 "kp-divide", /* 0xffaf */
3539 "kp-0", /* 0xffb0 */
3540 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
3543 "kp-equal", /* 0xffbd */
3544 "f1", /* 0xffbe */ /* IsFunctionKey */
3546 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
3547 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
3548 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
3549 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
3550 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
3551 0, 0, 0, 0, 0, 0, 0, 0,
3552 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
3553 0, 0, 0, 0, 0, 0, 0, "delete"
3556 #endif /* HAVE_NTGUI */
3558 static char *lispy_mouse_names
[] =
3560 "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5"
3563 /* Scroll bar parts. */
3564 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
3565 Lisp_Object Qup
, Qdown
;
3567 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
3568 Lisp_Object
*scroll_bar_parts
[] = {
3569 &Qabove_handle
, &Qhandle
, &Qbelow_handle
,
3574 /* A vector, indexed by button number, giving the down-going location
3575 of currently depressed buttons, both scroll bar and non-scroll bar.
3577 The elements have the form
3578 (BUTTON-NUMBER MODIFIER-MASK . REST)
3579 where REST is the cdr of a position as it would be reported in the event.
3581 The make_lispy_event function stores positions here to tell the
3582 difference between click and drag events, and to store the starting
3583 location to be included in drag events. */
3585 static Lisp_Object button_down_location
;
3587 /* Information about the most recent up-going button event: Which
3588 button, what location, and what time. */
3590 static int last_mouse_button
;
3591 static int last_mouse_x
;
3592 static int last_mouse_y
;
3593 static unsigned long button_down_time
;
3595 /* The maximum time between clicks to make a double-click,
3596 or Qnil to disable double-click detection,
3597 or Qt for no time limit. */
3598 Lisp_Object Vdouble_click_time
;
3600 /* The number of clicks in this multiple-click. */
3602 int double_click_count
;
3604 /* Given a struct input_event, build the lisp event which represents
3605 it. If EVENT is 0, build a mouse movement event from the mouse
3606 movement buffer, which should have a movement event in it.
3608 Note that events must be passed to this function in the order they
3609 are received; this function stores the location of button presses
3610 in order to build drag events when the button is released. */
3613 make_lispy_event (event
)
3614 struct input_event
*event
;
3618 switch (SWITCH_ENUM_CAST (event
->kind
))
3620 /* A simple keystroke. */
3621 case ascii_keystroke
:
3623 Lisp_Object lispy_c
;
3624 int c
= event
->code
& 0377;
3625 /* Turn ASCII characters into control characters
3627 if (event
->modifiers
& ctrl_modifier
)
3628 c
= make_ctrl_char (c
);
3630 /* Add in the other modifier bits. We took care of ctrl_modifier
3631 just above, and the shift key was taken care of by the X code,
3632 and applied to control characters by make_ctrl_char. */
3633 c
|= (event
->modifiers
3634 & (meta_modifier
| alt_modifier
3635 | hyper_modifier
| super_modifier
));
3636 button_down_time
= 0;
3637 XSETFASTINT (lispy_c
, c
);
3641 /* A function key. The symbol may need to have modifier prefixes
3643 case non_ascii_keystroke
:
3644 button_down_time
= 0;
3646 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
3647 if (event
->code
== lispy_accent_codes
[i
])
3648 return modify_event_symbol (i
,
3650 Qfunction_key
, Qnil
,
3651 lispy_accent_keys
, &accent_key_syms
,
3652 (sizeof (lispy_accent_keys
)
3653 / sizeof (lispy_accent_keys
[0])));
3655 /* Handle system-specific keysyms. */
3656 if (event
->code
& (1 << 28))
3658 /* We need to use an alist rather than a vector as the cache
3659 since we can't make a vector long enuf. */
3660 if (NILP (current_kboard
->system_key_syms
))
3661 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
3662 return modify_event_symbol (event
->code
,
3665 current_kboard
->Vsystem_key_alist
,
3666 0, ¤t_kboard
->system_key_syms
,
3670 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
3672 Qfunction_key
, Qnil
,
3673 lispy_function_keys
, &func_key_syms
,
3674 (sizeof (lispy_function_keys
)
3675 / sizeof (lispy_function_keys
[0])));
3678 /* Note that timer_event is currently never used. */
3680 return Fcons (Qtimer_event
, Fcons (Fcdr (event
->frame_or_window
), Qnil
));
3683 /* A mouse click. Figure out where it is, decide whether it's
3684 a press, click or drag, and build the appropriate structure. */
3686 case scroll_bar_click
:
3688 int button
= event
->code
;
3690 Lisp_Object position
;
3691 Lisp_Object
*start_pos_ptr
;
3692 Lisp_Object start_pos
;
3694 if (button
< 0 || button
>= NUM_MOUSE_BUTTONS
)
3697 /* Build the position as appropriate for this mouse click. */
3698 if (event
->kind
== mouse_click
)
3701 FRAME_PTR f
= XFRAME (event
->frame_or_window
);
3706 /* Ignore mouse events that were made on frame that
3707 have been deleted. */
3708 if (! FRAME_LIVE_P (f
))
3711 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
3712 &column
, &row
, NULL
, 1);
3714 #ifndef USE_X_TOOLKIT
3715 /* In the non-toolkit version, clicks on the menu bar
3716 are ordinary button events in the event buffer.
3717 Distinguish them, and invoke the menu.
3719 (In the toolkit version, the toolkit handles the menu bar
3720 and Emacs doesn't know about it until after the user
3721 makes a selection.) */
3722 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
3723 && (event
->modifiers
& down_modifier
))
3725 Lisp_Object items
, item
;
3730 /* Activate the menu bar on the down event. If the
3731 up event comes in before the menu code can deal with it,
3733 if (! (event
->modifiers
& down_modifier
))
3738 items
= FRAME_MENU_BAR_ITEMS (f
);
3739 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 4)
3741 Lisp_Object pos
, string
;
3742 string
= XVECTOR (items
)->contents
[i
+ 1];
3743 pos
= XVECTOR (items
)->contents
[i
+ 3];
3746 if (column
>= XINT (pos
)
3747 && column
< XINT (pos
) + XSTRING (string
)->size
)
3749 item
= XVECTOR (items
)->contents
[i
];
3755 = Fcons (event
->frame_or_window
,
3757 Fcons (Fcons (event
->x
, event
->y
),
3758 Fcons (make_number (event
->timestamp
),
3761 return Fcons (item
, Fcons (position
, Qnil
));
3763 #endif /* not USE_X_TOOLKIT */
3765 window
= window_from_coordinates (f
, column
, row
, &part
);
3767 if (!WINDOWP (window
))
3769 window
= event
->frame_or_window
;
3774 int pixcolumn
, pixrow
;
3775 column
-= XINT (XWINDOW (window
)->left
);
3776 row
-= XINT (XWINDOW (window
)->top
);
3777 glyph_to_pixel_coords (f
, column
, row
, &pixcolumn
, &pixrow
);
3778 XSETINT (event
->x
, pixcolumn
);
3779 XSETINT (event
->y
, pixrow
);
3784 posn
= Qvertical_line
;
3787 buffer_posn_from_coords (XWINDOW (window
),
3794 Fcons (Fcons (event
->x
, event
->y
),
3795 Fcons (make_number (event
->timestamp
),
3801 Lisp_Object portion_whole
;
3804 window
= event
->frame_or_window
;
3805 portion_whole
= Fcons (event
->x
, event
->y
);
3806 part
= *scroll_bar_parts
[(int) event
->part
];
3810 Fcons (Qvertical_scroll_bar
,
3811 Fcons (portion_whole
,
3812 Fcons (make_number (event
->timestamp
),
3813 Fcons (part
, Qnil
)))));
3816 start_pos_ptr
= &XVECTOR (button_down_location
)->contents
[button
];
3818 start_pos
= *start_pos_ptr
;
3819 *start_pos_ptr
= Qnil
;
3821 is_double
= (button
== last_mouse_button
3822 && XINT (event
->x
) == last_mouse_x
3823 && XINT (event
->y
) == last_mouse_y
3824 && button_down_time
!= 0
3825 && (EQ (Vdouble_click_time
, Qt
)
3826 || (INTEGERP (Vdouble_click_time
)
3827 && ((int)(event
->timestamp
- button_down_time
)
3828 < XINT (Vdouble_click_time
)))));
3829 last_mouse_button
= button
;
3830 last_mouse_x
= XINT (event
->x
);
3831 last_mouse_y
= XINT (event
->y
);
3833 /* If this is a button press, squirrel away the location, so
3834 we can decide later whether it was a click or a drag. */
3835 if (event
->modifiers
& down_modifier
)
3839 double_click_count
++;
3840 event
->modifiers
|= ((double_click_count
> 2)
3845 double_click_count
= 1;
3846 button_down_time
= event
->timestamp
;
3847 *start_pos_ptr
= Fcopy_alist (position
);
3850 /* Now we're releasing a button - check the co-ordinates to
3851 see if this was a click or a drag. */
3852 else if (event
->modifiers
& up_modifier
)
3854 /* If we did not see a down before this up,
3855 ignore the up. Probably this happened because
3856 the down event chose a menu item.
3857 It would be an annoyance to treat the release
3858 of the button that chose the menu item
3859 as a separate event. */
3861 if (!CONSP (start_pos
))
3864 event
->modifiers
&= ~up_modifier
;
3865 #if 0 /* Formerly we treated an up with no down as a click event. */
3866 if (!CONSP (start_pos
))
3867 event
->modifiers
|= click_modifier
;
3871 /* The third element of every position should be the (x,y)
3875 down
= Fnth (make_number (2), start_pos
);
3876 if (EQ (event
->x
, XCONS (down
)->car
)
3877 && EQ (event
->y
, XCONS (down
)->cdr
))
3879 event
->modifiers
|= click_modifier
;
3883 button_down_time
= 0;
3884 event
->modifiers
|= drag_modifier
;
3886 /* Don't check is_double; treat this as multiple
3887 if the down-event was multiple. */
3888 if (double_click_count
> 1)
3889 event
->modifiers
|= ((double_click_count
> 2)
3895 /* Every mouse event should either have the down_modifier or
3896 the up_modifier set. */
3900 /* Get the symbol we should use for the mouse click. */
3903 head
= modify_event_symbol (button
,
3906 lispy_mouse_names
, &mouse_syms
,
3907 (sizeof (lispy_mouse_names
)
3908 / sizeof (lispy_mouse_names
[0])));
3909 if (event
->modifiers
& drag_modifier
)
3914 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
3917 Fcons (make_number (double_click_count
),
3927 case win32_scroll_bar_click
:
3929 int button
= event
->code
;
3931 Lisp_Object position
;
3932 Lisp_Object
*start_pos_ptr
;
3933 Lisp_Object start_pos
;
3935 if (button
< 0 || button
>= NUM_MOUSE_BUTTONS
)
3940 Lisp_Object portion_whole
;
3943 window
= event
->frame_or_window
;
3944 portion_whole
= Fcons (event
->x
, event
->y
);
3945 part
= *scroll_bar_parts
[(int) event
->part
];
3949 Fcons (Qvertical_scroll_bar
,
3950 Fcons (portion_whole
,
3951 Fcons (make_number (event
->timestamp
),
3952 Fcons (part
, Qnil
)))));
3955 /* Always treat Win32 scroll bar events as clicks. */
3956 event
->modifiers
|= click_modifier
;
3959 /* Get the symbol we should use for the mouse click. */
3962 head
= modify_event_symbol (button
,
3965 lispy_mouse_names
, &mouse_syms
,
3966 (sizeof (lispy_mouse_names
)
3967 / sizeof (lispy_mouse_names
[0])));
3975 #endif /* HAVE_MOUSE */
3977 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
3978 case menu_bar_event
:
3979 /* The event value is in the cdr of the frame_or_window slot. */
3980 if (!CONSP (event
->frame_or_window
))
3982 return XCONS (event
->frame_or_window
)->cdr
;
3985 /* The 'kind' field of the event is something we don't recognize. */
3994 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
3996 Lisp_Object bar_window
;
3997 enum scroll_bar_part part
;
4002 /* Is it a scroll bar movement? */
4003 if (frame
&& ! NILP (bar_window
))
4005 Lisp_Object part_sym
;
4007 part_sym
= *scroll_bar_parts
[(int) part
];
4008 return Fcons (Qscroll_bar_movement
,
4009 (Fcons (Fcons (bar_window
,
4010 Fcons (Qvertical_scroll_bar
,
4011 Fcons (Fcons (x
, y
),
4012 Fcons (make_number (time
),
4018 /* Or is it an ordinary mouse movement? */
4020 #endif /* MULTI_FRAME */
4033 /* It's in a frame; which window on that frame? */
4034 pixel_to_glyph_coords (frame
, XINT (x
), XINT (y
), &column
, &row
,
4036 window
= window_from_coordinates (frame
, column
, row
, &area
);
4041 if (WINDOWP (window
))
4043 int pixcolumn
, pixrow
;
4044 column
-= XINT (XWINDOW (window
)->left
);
4045 row
-= XINT (XWINDOW (window
)->top
);
4046 glyph_to_pixel_coords (frame
, column
, row
, &pixcolumn
, &pixrow
);
4047 XSETINT (x
, pixcolumn
);
4048 XSETINT (y
, pixrow
);
4053 posn
= Qvertical_line
;
4056 buffer_posn_from_coords (XWINDOW (window
), column
, row
));
4059 else if (frame
!= 0)
4061 XSETFRAME (window
, frame
);
4073 return Fcons (Qmouse_movement
,
4074 Fcons (Fcons (window
,
4076 Fcons (Fcons (x
, y
),
4077 Fcons (make_number (time
),
4083 #endif /* HAVE_MOUSE */
4085 /* Construct a switch frame event. */
4087 make_lispy_switch_frame (frame
)
4090 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
4093 /* Manipulating modifiers. */
4095 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
4097 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
4098 SYMBOL's name of the end of the modifiers; the string from this
4099 position is the unmodified symbol name.
4101 This doesn't use any caches. */
4104 parse_modifiers_uncached (symbol
, modifier_end
)
4108 struct Lisp_String
*name
;
4112 CHECK_SYMBOL (symbol
, 1);
4115 name
= XSYMBOL (symbol
)->name
;
4117 for (i
= 0; i
+2 <= name
->size
; )
4119 int this_mod_end
= 0;
4122 /* See if the name continues with a modifier word.
4123 Check that the word appears, but don't check what follows it.
4124 Set this_mod and this_mod_end to record what we find. */
4126 switch (name
->data
[i
])
4128 #define SINGLE_LETTER_MOD(BIT) \
4129 (this_mod_end = i + 1, this_mod = BIT)
4132 SINGLE_LETTER_MOD (alt_modifier
);
4136 SINGLE_LETTER_MOD (ctrl_modifier
);
4140 SINGLE_LETTER_MOD (hyper_modifier
);
4144 SINGLE_LETTER_MOD (meta_modifier
);
4148 SINGLE_LETTER_MOD (shift_modifier
);
4152 SINGLE_LETTER_MOD (super_modifier
);
4155 #undef SINGLE_LETTER_MOD
4158 /* If we found no modifier, stop looking for them. */
4159 if (this_mod_end
== 0)
4162 /* Check there is a dash after the modifier, so that it
4163 really is a modifier. */
4164 if (this_mod_end
>= name
->size
|| name
->data
[this_mod_end
] != '-')
4167 /* This modifier is real; look for another. */
4168 modifiers
|= this_mod
;
4169 i
= this_mod_end
+ 1;
4172 /* Should we include the `click' modifier? */
4173 if (! (modifiers
& (down_modifier
| drag_modifier
4174 | double_modifier
| triple_modifier
))
4175 && i
+ 7 == name
->size
4176 && strncmp (name
->data
+ i
, "mouse-", 6) == 0
4177 && ('0' <= name
->data
[i
+ 6] && name
->data
[i
+ 6] <= '9'))
4178 modifiers
|= click_modifier
;
4186 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
4187 prepended to the string BASE[0..BASE_LEN-1].
4188 This doesn't use any caches. */
4190 apply_modifiers_uncached (modifiers
, base
, base_len
)
4195 /* Since BASE could contain nulls, we can't use intern here; we have
4196 to use Fintern, which expects a genuine Lisp_String, and keeps a
4199 (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
4205 /* Only the event queue may use the `up' modifier; it should always
4206 be turned into a click or drag event before presented to lisp code. */
4207 if (modifiers
& up_modifier
)
4210 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
4211 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
4212 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
4213 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
4214 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
4215 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
4216 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
4217 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
4218 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
4219 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
4220 /* The click modifier is denoted by the absence of other modifiers. */
4224 mod_len
= p
- new_mods
;
4228 Lisp_Object new_name
;
4230 new_name
= make_uninit_string (mod_len
+ base_len
);
4231 bcopy (new_mods
, XSTRING (new_name
)->data
, mod_len
);
4232 bcopy (base
, XSTRING (new_name
)->data
+ mod_len
, base_len
);
4234 return Fintern (new_name
, Qnil
);
4239 static char *modifier_names
[] =
4241 "up", "down", "drag", "click", "double", "triple", 0, 0,
4242 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4243 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
4245 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
4247 static Lisp_Object modifier_symbols
;
4249 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
4251 lispy_modifier_list (modifiers
)
4254 Lisp_Object modifier_list
;
4257 modifier_list
= Qnil
;
4258 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
4259 if (modifiers
& (1<<i
))
4260 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
4263 return modifier_list
;
4267 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
4268 where UNMODIFIED is the unmodified form of SYMBOL,
4269 MASK is the set of modifiers present in SYMBOL's name.
4270 This is similar to parse_modifiers_uncached, but uses the cache in
4271 SYMBOL's Qevent_symbol_element_mask property, and maintains the
4272 Qevent_symbol_elements property. */
4275 parse_modifiers (symbol
)
4278 Lisp_Object elements
;
4280 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
4281 if (CONSP (elements
))
4286 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
4287 Lisp_Object unmodified
;
4290 unmodified
= Fintern (make_string (XSYMBOL (symbol
)->name
->data
+ end
,
4291 XSYMBOL (symbol
)->name
->size
- end
),
4294 if (modifiers
& ~(((EMACS_INT
)1 << VALBITS
) - 1))
4296 XSETFASTINT (mask
, modifiers
);
4297 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
4299 /* Cache the parsing results on SYMBOL. */
4300 Fput (symbol
, Qevent_symbol_element_mask
,
4302 Fput (symbol
, Qevent_symbol_elements
,
4303 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
4305 /* Since we know that SYMBOL is modifiers applied to unmodified,
4306 it would be nice to put that in unmodified's cache.
4307 But we can't, since we're not sure that parse_modifiers is
4314 /* Apply the modifiers MODIFIERS to the symbol BASE.
4315 BASE must be unmodified.
4317 This is like apply_modifiers_uncached, but uses BASE's
4318 Qmodifier_cache property, if present. It also builds
4319 Qevent_symbol_elements properties, since it has that info anyway.
4321 apply_modifiers copies the value of BASE's Qevent_kind property to
4322 the modified symbol. */
4324 apply_modifiers (modifiers
, base
)
4328 Lisp_Object cache
, index
, entry
, new_symbol
;
4330 /* Mask out upper bits. We don't know where this value's been. */
4331 modifiers
&= ((EMACS_INT
)1 << VALBITS
) - 1;
4333 /* The click modifier never figures into cache indices. */
4334 cache
= Fget (base
, Qmodifier_cache
);
4335 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
4336 entry
= assq_no_quit (index
, cache
);
4339 new_symbol
= XCONS (entry
)->cdr
;
4342 /* We have to create the symbol ourselves. */
4343 new_symbol
= apply_modifiers_uncached (modifiers
,
4344 XSYMBOL (base
)->name
->data
,
4345 XSYMBOL (base
)->name
->size
);
4347 /* Add the new symbol to the base's cache. */
4348 entry
= Fcons (index
, new_symbol
);
4349 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
4351 /* We have the parsing info now for free, so add it to the caches. */
4352 XSETFASTINT (index
, modifiers
);
4353 Fput (new_symbol
, Qevent_symbol_element_mask
,
4354 Fcons (base
, Fcons (index
, Qnil
)));
4355 Fput (new_symbol
, Qevent_symbol_elements
,
4356 Fcons (base
, lispy_modifier_list (modifiers
)));
4359 /* Make sure this symbol is of the same kind as BASE.
4361 You'd think we could just set this once and for all when we
4362 intern the symbol above, but reorder_modifiers may call us when
4363 BASE's property isn't set right; we can't assume that just
4364 because it has a Qmodifier_cache property it must have its
4365 Qevent_kind set right as well. */
4366 if (NILP (Fget (new_symbol
, Qevent_kind
)))
4370 kind
= Fget (base
, Qevent_kind
);
4372 Fput (new_symbol
, Qevent_kind
, kind
);
4379 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
4380 return a symbol with the modifiers placed in the canonical order.
4381 Canonical order is alphabetical, except for down and drag, which
4382 always come last. The 'click' modifier is never written out.
4384 Fdefine_key calls this to make sure that (for example) C-M-foo
4385 and M-C-foo end up being equivalent in the keymap. */
4388 reorder_modifiers (symbol
)
4391 /* It's hopefully okay to write the code this way, since everything
4392 will soon be in caches, and no consing will be done at all. */
4395 parsed
= parse_modifiers (symbol
);
4396 return apply_modifiers ((int) XINT (XCONS (XCONS (parsed
)->cdr
)->car
),
4397 XCONS (parsed
)->car
);
4401 /* For handling events, we often want to produce a symbol whose name
4402 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
4403 to some base, like the name of a function key or mouse button.
4404 modify_event_symbol produces symbols of this sort.
4406 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
4407 is the name of the i'th symbol. TABLE_SIZE is the number of elements
4410 Alternatively, NAME_ALIST is an alist mapping codes into symbol names.
4411 NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used.
4413 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
4414 persist between calls to modify_event_symbol that it can use to
4415 store a cache of the symbols it's generated for this NAME_TABLE
4416 before. The object stored there may be a vector or an alist.
4418 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
4420 MODIFIERS is a set of modifier bits (as given in struct input_events)
4421 whose prefixes should be applied to the symbol name.
4423 SYMBOL_KIND is the value to be placed in the event_kind property of
4424 the returned symbol.
4426 The symbols we create are supposed to have an
4427 `event-symbol-elements' property, which lists the modifiers present
4428 in the symbol's name. */
4431 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist
,
4432 name_table
, symbol_table
, table_size
)
4435 Lisp_Object symbol_kind
;
4436 Lisp_Object name_alist
;
4438 Lisp_Object
*symbol_table
;
4439 unsigned int table_size
;
4442 Lisp_Object symbol_int
;
4444 /* Get rid of the "vendor-specific" bit here. */
4445 XSETINT (symbol_int
, symbol_num
& 0xffffff);
4447 /* Is this a request for a valid symbol? */
4448 if (symbol_num
< 0 || symbol_num
>= table_size
)
4451 if (CONSP (*symbol_table
))
4452 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
4454 /* If *symbol_table doesn't seem to be initialized properly, fix that.
4455 *symbol_table should be a lisp vector TABLE_SIZE elements long,
4456 where the Nth element is the symbol for NAME_TABLE[N], or nil if
4457 we've never used that symbol before. */
4460 if (! VECTORP (*symbol_table
)
4461 || XVECTOR (*symbol_table
)->size
!= table_size
)
4465 XSETFASTINT (size
, table_size
);
4466 *symbol_table
= Fmake_vector (size
, Qnil
);
4469 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
4472 /* Have we already used this symbol before? */
4475 /* No; let's create it. */
4476 if (!NILP (name_alist
))
4477 value
= Fcdr_safe (Fassq (symbol_int
, name_alist
));
4478 else if (name_table
[symbol_num
])
4479 value
= intern (name_table
[symbol_num
]);
4481 #ifdef HAVE_WINDOW_SYSTEM
4484 char *name
= x_get_keysym_name (symbol_num
);
4486 value
= intern (name
);
4493 sprintf (buf
, "key-%d", symbol_num
);
4494 value
= intern (buf
);
4497 if (CONSP (*symbol_table
))
4498 *symbol_table
= Fcons (Fcons (symbol_int
, value
), *symbol_table
);
4500 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
4502 /* Fill in the cache entries for this symbol; this also
4503 builds the Qevent_symbol_elements property, which the user
4505 apply_modifiers (modifiers
& click_modifier
, value
);
4506 Fput (value
, Qevent_kind
, symbol_kind
);
4509 /* Apply modifiers to that symbol. */
4510 return apply_modifiers (modifiers
, value
);
4513 /* Convert a list that represents an event type,
4514 such as (ctrl meta backspace), into the usual representation of that
4515 event type as a number or a symbol. */
4517 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
4518 "Convert the event description list EVENT-DESC to an event type.\n\
4519 EVENT-DESC should contain one base event type (a character or symbol)\n\
4520 and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\
4521 drag, down, double or triple). The base must be last.\n\
4522 The return value is an event type (a character or symbol) which\n\
4523 has the same base event type and all the specified modifiers.")
4525 Lisp_Object event_desc
;
4533 while (CONSP (rest
))
4538 elt
= XCONS (rest
)->car
;
4539 rest
= XCONS (rest
)->cdr
;
4541 /* Given a symbol, see if it is a modifier name. */
4542 if (SYMBOLP (elt
) && CONSP (rest
))
4543 this = parse_solitary_modifier (elt
);
4547 else if (!NILP (base
))
4548 error ("Two bases given in one event");
4554 /* Let the symbol A refer to the character A. */
4555 if (SYMBOLP (base
) && XSYMBOL (base
)->name
->size
== 1)
4556 XSETINT (base
, XSYMBOL (base
)->name
->data
[0]);
4558 if (INTEGERP (base
))
4560 /* Turn (shift a) into A. */
4561 if ((modifiers
& shift_modifier
) != 0
4562 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
4564 XSETINT (base
, XINT (base
) - ('a' - 'A'));
4565 modifiers
&= ~shift_modifier
;
4568 /* Turn (control a) into C-a. */
4569 if (modifiers
& ctrl_modifier
)
4570 return make_number ((modifiers
& ~ctrl_modifier
)
4571 | make_ctrl_char (XINT (base
)));
4573 return make_number (modifiers
| XINT (base
));
4575 else if (SYMBOLP (base
))
4576 return apply_modifiers (modifiers
, base
);
4578 error ("Invalid base event");
4581 /* Try to recognize SYMBOL as a modifier name.
4582 Return the modifier flag bit, or 0 if not recognized. */
4585 parse_solitary_modifier (symbol
)
4588 struct Lisp_String
*name
= XSYMBOL (symbol
)->name
;
4590 switch (name
->data
[0])
4592 #define SINGLE_LETTER_MOD(BIT) \
4593 if (name->size == 1) \
4596 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
4597 if (LEN == name->size \
4598 && ! strncmp (name->data, NAME, LEN)) \
4602 SINGLE_LETTER_MOD (alt_modifier
);
4606 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
4610 SINGLE_LETTER_MOD (ctrl_modifier
);
4614 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
4615 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
4619 SINGLE_LETTER_MOD (hyper_modifier
);
4623 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
4627 SINGLE_LETTER_MOD (meta_modifier
);
4631 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
4635 SINGLE_LETTER_MOD (shift_modifier
);
4639 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
4640 MULTI_LETTER_MOD (super_modifier
, "super", 5);
4641 SINGLE_LETTER_MOD (super_modifier
);
4645 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
4646 MULTI_LETTER_MOD (down_modifier
, "down", 4);
4647 MULTI_LETTER_MOD (double_modifier
, "double", 6);
4651 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
4654 #undef SINGLE_LETTER_MOD
4655 #undef MULTI_LETTER_MOD
4661 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
4662 Such a list is not valid as an event,
4663 but it can be a Lucid-style event type list. */
4666 lucid_event_type_list_p (object
)
4671 if (! CONSP (object
))
4674 for (tail
= object
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
4677 elt
= XCONS (tail
)->car
;
4678 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
4685 /* Store into *addr a value nonzero if terminal input chars are available.
4686 Serves the purpose of ioctl (0, FIONREAD, addr)
4687 but works even if FIONREAD does not exist.
4688 (In fact, this may actually read some input.)
4690 If DO_TIMERS_NOW is nonzero, actually run timer events that are ripe. */
4693 get_input_pending (addr
, do_timers_now
)
4697 /* First of all, have we already counted some input? */
4698 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4700 /* If input is being read as it arrives, and we have none, there is none. */
4701 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
4704 /* Try to read some input and see how much we get. */
4706 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4709 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
4712 gobble_input (expected
)
4717 if (interrupt_input
)
4720 mask
= sigblockx (SIGIO
);
4721 read_avail_input (expected
);
4725 #ifdef POLL_FOR_INPUT
4726 if (read_socket_hook
&& !interrupt_input
&& poll_suppress_count
== 0)
4729 mask
= sigblockx (SIGALRM
);
4730 read_avail_input (expected
);
4736 read_avail_input (expected
);
4740 /* Put a buffer_switch_event in the buffer
4741 so that read_key_sequence will notice the new current buffer. */
4743 record_asynch_buffer_change ()
4745 struct input_event event
;
4748 event
.kind
= buffer_switch_event
;
4749 event
.frame_or_window
= Qnil
;
4752 /* We don't need a buffer-switch event unless Emacs is waiting for input.
4753 The purpose of the event is to make read_key_sequence look up the
4754 keymaps again. If we aren't in read_key_sequence, we don't need one,
4755 and the event could cause trouble by messing up (input-pending-p). */
4756 tem
= Fwaiting_for_user_input_p ();
4760 /* We never need these events if we have no asynchronous subprocesses. */
4764 /* Make sure no interrupt happens while storing the event. */
4766 if (interrupt_input
)
4769 mask
= sigblockx (SIGIO
);
4770 kbd_buffer_store_event (&event
);
4777 kbd_buffer_store_event (&event
);
4784 /* Read any terminal input already buffered up by the system
4785 into the kbd_buffer, but do not wait.
4787 EXPECTED should be nonzero if the caller knows there is some input.
4789 Except on VMS, all input is read by this function.
4790 If interrupt_input is nonzero, this function MUST be called
4791 only when SIGIO is blocked.
4793 Returns the number of keyboard chars read, or -1 meaning
4794 this is a bad time to try to read input. */
4797 read_avail_input (expected
)
4800 struct input_event buf
[KBD_BUFFER_SIZE
];
4804 if (read_socket_hook
)
4805 /* No need for FIONREAD or fcntl; just say don't wait. */
4806 nread
= (*read_socket_hook
) (input_fd
, buf
, KBD_BUFFER_SIZE
,
4807 expected
, expected
);
4810 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
4811 the kbd_buffer can really hold. That may prevent loss
4812 of characters on some systems when input is stuffed at us. */
4813 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
4816 /* Determine how many characters we should *try* to read. */
4819 #else /* not WINDOWSNT */
4821 n_to_read
= dos_keysns ();
4824 #else /* not MSDOS */
4826 /* Find out how much input is available. */
4827 if (ioctl (input_fd
, FIONREAD
, &n_to_read
) < 0)
4828 /* Formerly simply reported no input, but that sometimes led to
4829 a failure of Emacs to terminate.
4830 SIGHUP seems appropriate if we can't reach the terminal. */
4831 /* ??? Is it really right to send the signal just to this process
4832 rather than to the whole process group?
4833 Perhaps on systems with FIONREAD Emacs is alone in its group. */
4834 kill (getpid (), SIGHUP
);
4837 if (n_to_read
> sizeof cbuf
)
4838 n_to_read
= sizeof cbuf
;
4839 #else /* no FIONREAD */
4840 #if defined (USG) || defined (DGUX)
4841 /* Read some input if available, but don't wait. */
4842 n_to_read
= sizeof cbuf
;
4843 fcntl (input_fd
, F_SETFL
, O_NDELAY
);
4848 #endif /* not MSDOS */
4849 #endif /* not WINDOWSNT */
4851 /* Now read; for one reason or another, this will not block.
4852 NREAD is set to the number of chars read. */
4856 cbuf
[0] = dos_keyread ();
4859 nread
= read (input_fd
, cbuf
, n_to_read
);
4861 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
4862 /* The kernel sometimes fails to deliver SIGHUP for ptys.
4863 This looks incorrect, but it isn't, because _BSD causes
4864 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
4865 and that causes a value other than 0 when there is no input. */
4871 /* We used to retry the read if it was interrupted.
4872 But this does the wrong thing when O_NDELAY causes
4873 an EAGAIN error. Does anybody know of a situation
4874 where a retry is actually needed? */
4876 nread
< 0 && (errno
== EAGAIN
4890 #if defined (USG) || defined (DGUX)
4891 fcntl (input_fd
, F_SETFL
, 0);
4892 #endif /* USG or DGUX */
4893 #endif /* no FIONREAD */
4894 for (i
= 0; i
< nread
; i
++)
4896 buf
[i
].kind
= ascii_keystroke
;
4897 buf
[i
].modifiers
= 0;
4898 if (meta_key
== 1 && (cbuf
[i
] & 0x80))
4899 buf
[i
].modifiers
= meta_modifier
;
4903 buf
[i
].code
= cbuf
[i
];
4905 XSETFRAME (buf
[i
].frame_or_window
, selected_frame
);
4907 buf
[i
].frame_or_window
= Qnil
;
4912 /* Scan the chars for C-g and store them in kbd_buffer. */
4913 for (i
= 0; i
< nread
; i
++)
4915 kbd_buffer_store_event (&buf
[i
]);
4916 /* Don't look at input that follows a C-g too closely.
4917 This reduces lossage due to autorepeat on C-g. */
4918 if (buf
[i
].kind
== ascii_keystroke
4919 && buf
[i
].code
== quit_char
)
4925 #endif /* not VMS */
4927 #ifdef SIGIO /* for entire page */
4928 /* Note SIGIO has been undef'd if FIONREAD is missing. */
4931 input_available_signal (signo
)
4934 /* Must preserve main program's value of errno. */
4935 int old_errno
= errno
;
4937 extern int select_alarmed
;
4941 /* USG systems forget handlers when they are used;
4942 must reestablish each time */
4943 signal (signo
, input_available_signal
);
4950 if (input_available_clear_time
)
4951 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
4956 nread
= read_avail_input (1);
4957 /* -1 means it's not ok to read the input now.
4958 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
4959 0 means there was no keyboard input available. */
4964 select_alarmed
= 1; /* Force the select emulator back to life */
4975 /* Send ourselves a SIGIO.
4977 This function exists so that the UNBLOCK_INPUT macro in
4978 blockinput.h can have some way to take care of input we put off
4979 dealing with, without assuming that every file which uses
4980 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
4982 reinvoke_input_signal ()
4985 kill (getpid (), SIGIO
);
4991 /* Return the prompt-string of a sparse keymap.
4992 This is the first element which is a string.
4993 Return nil if there is none. */
5001 register Lisp_Object tem
;
5010 static void menu_bar_item ();
5011 static void menu_bar_one_keymap ();
5013 /* These variables hold the vector under construction within
5014 menu_bar_items and its subroutines, and the current index
5015 for storing into that vector. */
5016 static Lisp_Object menu_bar_items_vector
;
5017 static int menu_bar_items_index
;
5019 /* Return a vector of menu items for a menu bar, appropriate
5020 to the current buffer. Each item has three elements in the vector:
5023 OLD is an old vector we can optionally reuse, or nil. */
5026 menu_bar_items (old
)
5029 /* The number of keymaps we're scanning right now, and the number of
5030 keymaps we have allocated space for. */
5033 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
5034 in the current keymaps, or nil where it is not a prefix. */
5037 Lisp_Object def
, tem
, tail
;
5046 struct gcpro gcpro1
;
5048 /* In order to build the menus, we need to call the keymap
5049 accessors. They all call QUIT. But this function is called
5050 during redisplay, during which a quit is fatal. So inhibit
5051 quitting while building the menus.
5052 We do this instead of specbind because (1) errors will clear it anyway
5053 and (2) this avoids risk of specpdl overflow. */
5054 oquit
= Vinhibit_quit
;
5058 menu_bar_items_vector
= old
;
5060 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
5061 menu_bar_items_index
= 0;
5063 GCPRO1 (menu_bar_items_vector
);
5065 /* Build our list of keymaps.
5066 If we recognize a function key and replace its escape sequence in
5067 keybuf with its symbol, or if the sequence starts with a mouse
5068 click and we need to switch buffers, we jump back here to rebuild
5069 the initial keymaps from the current buffer. */
5073 /* Should overriding-terminal-local-map and overriding-local-map apply? */
5074 if (!NILP (Voverriding_local_map_menu_flag
))
5076 /* Yes, use them (if non-nil) as well as the global map. */
5077 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
5079 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
5080 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
5081 if (!NILP (Voverriding_local_map
))
5082 maps
[nmaps
++] = Voverriding_local_map
;
5086 /* No, so use major and minor mode keymaps. */
5087 nmaps
= current_minor_maps (NULL
, &tmaps
);
5088 maps
= (Lisp_Object
*) alloca ((nmaps
+ 2) * sizeof (maps
[0]));
5089 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
5090 #ifdef USE_TEXT_PROPERTIES
5091 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
5093 maps
[nmaps
++] = current_buffer
->keymap
;
5096 maps
[nmaps
++] = current_global_map
;
5099 /* Look up in each map the dummy prefix key `menu-bar'. */
5103 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
5105 if (! NILP (maps
[mapno
]))
5106 def
= get_keyelt (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0));
5110 tem
= Fkeymapp (def
);
5112 menu_bar_one_keymap (def
);
5115 /* Move to the end those items that should be at the end. */
5117 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5120 int end
= menu_bar_items_index
;
5122 for (i
= 0; i
< end
; i
+= 4)
5123 if (EQ (XCONS (tail
)->car
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5125 Lisp_Object tem0
, tem1
, tem2
, tem3
;
5126 /* Move the item at index I to the end,
5127 shifting all the others forward. */
5128 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
5129 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
5130 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5131 tem3
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3];
5133 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
5134 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5135 (end
- i
- 4) * sizeof (Lisp_Object
));
5136 XVECTOR (menu_bar_items_vector
)->contents
[end
- 4] = tem0
;
5137 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem1
;
5138 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem2
;
5139 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem3
;
5144 /* Add nil, nil, nil, nil at the end. */
5145 i
= menu_bar_items_index
;
5146 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
5149 int newsize
= 2 * i
;
5150 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5151 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5152 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5153 menu_bar_items_vector
= tem
;
5155 /* Add this item. */
5156 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5157 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5158 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5159 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5160 menu_bar_items_index
= i
;
5162 Vinhibit_quit
= oquit
;
5164 return menu_bar_items_vector
;
5167 /* Scan one map KEYMAP, accumulating any menu items it defines
5168 in menu_bar_items_vector. */
5171 menu_bar_one_keymap (keymap
)
5174 Lisp_Object tail
, item
, key
, binding
, item_string
, table
;
5176 /* Loop over all keymap entries that have menu strings. */
5177 for (tail
= keymap
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5179 item
= XCONS (tail
)->car
;
5182 key
= XCONS (item
)->car
;
5183 binding
= XCONS (item
)->cdr
;
5184 if (CONSP (binding
))
5186 item_string
= XCONS (binding
)->car
;
5187 if (STRINGP (item_string
))
5188 menu_bar_item (key
, item_string
, Fcdr (binding
));
5190 else if (EQ (binding
, Qundefined
))
5191 menu_bar_item (key
, Qnil
, binding
);
5193 else if (VECTORP (item
))
5195 /* Loop over the char values represented in the vector. */
5196 int len
= XVECTOR (item
)->size
;
5198 for (c
= 0; c
< len
; c
++)
5200 Lisp_Object character
;
5201 XSETFASTINT (character
, c
);
5202 binding
= XVECTOR (item
)->contents
[c
];
5203 if (CONSP (binding
))
5205 item_string
= XCONS (binding
)->car
;
5206 if (STRINGP (item_string
))
5207 menu_bar_item (key
, item_string
, Fcdr (binding
));
5209 else if (EQ (binding
, Qundefined
))
5210 menu_bar_item (key
, Qnil
, binding
);
5216 /* This is used as the handler when calling internal_condition_case_1. */
5219 menu_bar_item_1 (arg
)
5225 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
5226 If there's already an item for KEY, add this DEF to it. */
5229 menu_bar_item (key
, item_string
, def
)
5230 Lisp_Object key
, item_string
, def
;
5233 Lisp_Object enabled
;
5236 /* Skip menu-bar equiv keys data. */
5237 if (CONSP (def
) && CONSP (XCONS (def
)->car
))
5238 def
= XCONS (def
)->cdr
;
5240 if (EQ (def
, Qundefined
))
5242 /* If a map has an explicit `undefined' as definition,
5243 discard any previously made menu bar item. */
5245 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
5246 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5248 if (menu_bar_items_index
> i
+ 4)
5249 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
5250 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5251 (menu_bar_items_index
- i
- 4) * sizeof (Lisp_Object
));
5252 menu_bar_items_index
-= 4;
5256 /* If there's no definition for this key yet,
5257 just ignore `undefined'. */
5261 /* See if this entry is enabled. */
5266 /* No property, or nil, means enable.
5267 Otherwise, enable if value is not nil. */
5268 tem
= Fget (def
, Qmenu_enable
);
5270 /* (condition-case nil (eval tem)
5272 enabled
= internal_condition_case_1 (Feval
, tem
, Qerror
,
5276 /* Ignore this item if it's not enabled. */
5280 /* Find any existing item for this KEY. */
5281 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
5282 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5285 /* If we did not find this KEY, add it at the end. */
5286 if (i
== menu_bar_items_index
)
5288 /* If vector is too small, get a bigger one. */
5289 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
5292 int newsize
= 2 * i
;
5293 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5294 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5295 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5296 menu_bar_items_vector
= tem
;
5298 /* Add this item. */
5299 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
5300 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = item_string
;
5301 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (def
, Qnil
);
5302 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = make_number (0);
5303 menu_bar_items_index
= i
;
5305 /* We did find an item for this KEY. Add DEF to its list of maps. */
5309 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5310 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = Fcons (def
, old
);
5314 /* Read a character using menus based on maps in the array MAPS.
5315 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
5316 Return t if we displayed a menu but the user rejected it.
5318 PREV_EVENT is the previous input event, or nil if we are reading
5319 the first event of a key sequence.
5321 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
5322 if we used a mouse menu to read the input, or zero otherwise. If
5323 USED_MOUSE_MENU is null, we don't dereference it.
5325 The prompting is done based on the prompt-string of the map
5326 and the strings associated with various map elements.
5328 This can be done with X menus or with menus put in the minibuf.
5329 These are done in different ways, depending on how the input will be read.
5330 Menus using X are done after auto-saving in read-char, getting the input
5331 event from Fx_popup_menu; menus using the minibuf use read_char recursively
5332 and do auto-saving in the inner call of read_char. */
5335 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
5338 Lisp_Object prev_event
;
5339 int *used_mouse_menu
;
5342 register Lisp_Object name
;
5343 Lisp_Object rest
, vector
;
5345 if (used_mouse_menu
)
5346 *used_mouse_menu
= 0;
5348 /* Use local over global Menu maps */
5350 if (! menu_prompting
)
5353 /* Optionally disregard all but the global map. */
5354 if (inhibit_local_menu_bar_menus
)
5356 maps
+= (nmaps
- 1);
5360 /* Get the menu name from the first map that has one (a prompt string). */
5361 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5363 name
= map_prompt (maps
[mapno
]);
5368 /* If we don't have any menus, just read a character normally. */
5373 /* If we got to this point via a mouse click,
5374 use a real menu for mouse selection. */
5375 if (EVENT_HAS_PARAMETERS (prev_event
)
5376 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
))
5378 /* Display the menu and get the selection. */
5379 Lisp_Object
*realmaps
5380 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
5384 /* Use the maps that are not nil. */
5385 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5386 if (!NILP (maps
[mapno
]))
5387 realmaps
[nmaps1
++] = maps
[mapno
];
5389 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
5394 /* If we got multiple events, unread all but
5396 There is no way to prevent those unread events
5397 from showing up later in last_nonmenu_event.
5398 So turn symbol and integer events into lists,
5399 to indicate that they came from a mouse menu,
5400 so that when present in last_nonmenu_event
5401 they won't confuse things. */
5402 for (tem
= XCONS (value
)->cdr
; !NILP (tem
);
5403 tem
= XCONS (tem
)->cdr
)
5404 if (SYMBOLP (XCONS (tem
)->car
)
5405 || INTEGERP (XCONS (tem
)->car
))
5407 = Fcons (XCONS (tem
)->car
, Qnil
);
5409 /* If we got more than one event, put all but the first
5410 onto this list to be read later.
5411 Return just the first event now. */
5412 Vunread_command_events
5413 = nconc2 (XCONS (value
)->cdr
, Vunread_command_events
);
5414 value
= XCONS (value
)->car
;
5416 else if (NILP (value
))
5418 if (used_mouse_menu
)
5419 *used_mouse_menu
= 1;
5422 #endif /* HAVE_MENUS */
5426 /* Buffer in use so far for the minibuf prompts for menu keymaps.
5427 We make this bigger when necessary, and never free it. */
5428 static char *read_char_minibuf_menu_text
;
5429 /* Size of that buffer. */
5430 static int read_char_minibuf_menu_width
;
5433 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
5439 register Lisp_Object name
;
5441 int width
= FRAME_WIDTH (selected_frame
) - 4;
5444 Lisp_Object rest
, vector
;
5447 if (! menu_prompting
)
5450 /* Make sure we have a big enough buffer for the menu text. */
5451 if (read_char_minibuf_menu_text
== 0)
5453 read_char_minibuf_menu_width
= width
+ 4;
5454 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
5456 else if (width
+ 4 > read_char_minibuf_menu_width
)
5458 read_char_minibuf_menu_width
= width
+ 4;
5459 read_char_minibuf_menu_text
5460 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
5462 menu
= read_char_minibuf_menu_text
;
5464 /* Get the menu name from the first map that has one (a prompt string). */
5465 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5467 name
= map_prompt (maps
[mapno
]);
5472 /* If we don't have any menus, just read a character normally. */
5476 /* Prompt string always starts with map's prompt, and a space. */
5477 strcpy (menu
, XSTRING (name
)->data
);
5478 nlength
= XSTRING (name
)->size
;
5479 menu
[nlength
++] = ':';
5480 menu
[nlength
++] = ' ';
5483 /* Start prompting at start of first map. */
5487 /* Present the documented bindings, a line at a time. */
5494 Lisp_Object orig_defn_macro
;
5496 /* Loop over elements of map. */
5501 /* If reached end of map, start at beginning of next map. */
5505 /* At end of last map, wrap around to first map if just starting,
5506 or end this line if already have something on it. */
5510 if (notfirst
|| nobindings
) break;
5515 /* Look at the next element of the map. */
5517 elt
= XVECTOR (vector
)->contents
[idx
];
5519 elt
= Fcar_safe (rest
);
5521 if (idx
< 0 && VECTORP (elt
))
5523 /* If we found a dense table in the keymap,
5524 advanced past it, but start scanning its contents. */
5525 rest
= Fcdr_safe (rest
);
5531 /* An ordinary element. */
5536 s
= Fcar_safe (Fcdr_safe (elt
)); /* alist */
5537 event
= Fcar_safe (elt
);
5541 s
= Fcar_safe (elt
); /* vector */
5542 XSETINT (event
, idx
);
5545 /* Ignore the element if it has no prompt string. */
5546 if (STRINGP (s
) && INTEGERP (event
))
5548 /* 1 if the char to type matches the string. */
5550 Lisp_Object upcased_event
, downcased_event
;
5553 upcased_event
= Fupcase (event
);
5554 downcased_event
= Fdowncase (event
);
5555 char_matches
= (XINT (upcased_event
) == XSTRING (s
)->data
[0]
5556 || XINT (downcased_event
) == XSTRING (s
)->data
[0]);
5558 desc
= Fsingle_key_description (event
);
5560 /* If we have room for the prompt string, add it to this line.
5561 If this is the first on the line, always add it. */
5562 if ((XSTRING (s
)->size
+ i
+ 2
5563 + (char_matches
? 0 : XSTRING (desc
)->size
+ 3))
5569 /* Punctuate between strings. */
5572 strcpy (menu
+ i
, ", ");
5578 /* If the char to type doesn't match the string's
5579 first char, explicitly show what char to type. */
5582 /* Add as much of string as fits. */
5583 thiswidth
= XSTRING (desc
)->size
;
5584 if (thiswidth
+ i
> width
)
5585 thiswidth
= width
- i
;
5586 bcopy (XSTRING (desc
)->data
, menu
+ i
, thiswidth
);
5588 strcpy (menu
+ i
, " = ");
5592 /* Add as much of string as fits. */
5593 thiswidth
= XSTRING (s
)->size
;
5594 if (thiswidth
+ i
> width
)
5595 thiswidth
= width
- i
;
5596 bcopy (XSTRING (s
)->data
, menu
+ i
, thiswidth
);
5602 /* If this element does not fit, end the line now,
5603 and save the element for the next line. */
5604 strcpy (menu
+ i
, "...");
5609 /* Move past this element. */
5610 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
5611 /* Handle reaching end of dense table. */
5616 rest
= Fcdr_safe (rest
);
5620 /* Prompt with that and read response. */
5623 /* Make believe its not a keyboard macro in case the help char
5624 is pressed. Help characters are not recorded because menu prompting
5625 is not used on replay.
5627 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
5628 current_kboard
->defining_kbd_macro
= Qnil
;
5630 obj
= read_char (commandflag
, 0, 0, Qnil
, 0);
5631 while (BUFFERP (obj
));
5632 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
5634 if (!INTEGERP (obj
))
5639 if (! EQ (obj
, menu_prompt_more_char
)
5640 && (!INTEGERP (menu_prompt_more_char
)
5641 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
5643 if (!NILP (current_kboard
->defining_kbd_macro
))
5644 store_kbd_macro_char (obj
);
5647 /* Help char - go round again */
5651 /* Reading key sequences. */
5653 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
5654 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
5655 keymap, or nil otherwise. Return the index of the first keymap in
5656 which KEY has any binding, or NMAPS if no map has a binding.
5658 If KEY is a meta ASCII character, treat it like meta-prefix-char
5659 followed by the corresponding non-meta character. Keymaps in
5660 CURRENT with non-prefix bindings for meta-prefix-char become nil in
5663 If KEY has no bindings in any of the CURRENT maps, NEXT is left
5666 NEXT may be the same array as CURRENT. */
5669 follow_key (key
, nmaps
, current
, defs
, next
)
5671 Lisp_Object
*current
, *defs
, *next
;
5674 int i
, first_binding
;
5677 /* If KEY is a meta ASCII character, treat it like meta-prefix-char
5678 followed by the corresponding non-meta character.
5679 Put the results into DEFS, since we are going to alter that anyway.
5680 Do not alter CURRENT or NEXT. */
5681 if (INTEGERP (key
) && (XINT (key
) & CHAR_META
))
5683 for (i
= 0; i
< nmaps
; i
++)
5684 if (! NILP (current
[i
]))
5687 def
= get_keyelt (access_keymap (current
[i
],
5688 meta_prefix_char
, 1, 0));
5690 /* Note that since we pass the resulting bindings through
5691 get_keymap_1, non-prefix bindings for meta-prefix-char
5693 defs
[i
] = get_keymap_1 (def
, 0, 1);
5699 XSETINT (key
, XFASTINT (key
) & ~CHAR_META
);
5702 first_binding
= nmaps
;
5703 for (i
= nmaps
- 1; i
>= 0; i
--)
5705 if (! NILP (current
[i
]))
5713 defs
[i
] = get_keyelt (access_keymap (map
, key
, 1, 0));
5714 if (! NILP (defs
[i
]))
5721 /* Given the set of bindings we've found, produce the next set of maps. */
5722 if (first_binding
< nmaps
)
5723 for (i
= 0; i
< nmaps
; i
++)
5724 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap_1 (defs
[i
], 0, 1);
5726 return first_binding
;
5729 /* Read a sequence of keys that ends with a non prefix character,
5730 storing it in KEYBUF, a buffer of size BUFSIZE.
5732 Return the length of the key sequence stored.
5733 Return -1 if the user rejected a command menu.
5735 Echo starting immediately unless `prompt' is 0.
5737 Where a key sequence ends depends on the currently active keymaps.
5738 These include any minor mode keymaps active in the current buffer,
5739 the current buffer's local map, and the global map.
5741 If a key sequence has no other bindings, we check Vfunction_key_map
5742 to see if some trailing subsequence might be the beginning of a
5743 function key's sequence. If so, we try to read the whole function
5744 key, and substitute its symbolic name into the key sequence.
5746 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
5747 `double-' events into similar click events, if that would make them
5748 bound. We try to turn `triple-' events first into `double-' events,
5751 If we get a mouse click in a mode line, vertical divider, or other
5752 non-text area, we treat the click as if it were prefixed by the
5753 symbol denoting that area - `mode-line', `vertical-line', or
5756 If the sequence starts with a mouse click, we read the key sequence
5757 with respect to the buffer clicked on, not the current buffer.
5759 If the user switches frames in the midst of a key sequence, we put
5760 off the switch-frame event until later; the next call to
5761 read_char will return it. */
5764 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
5765 can_return_switch_frame
)
5766 Lisp_Object
*keybuf
;
5769 int dont_downcase_last
;
5770 int can_return_switch_frame
;
5772 int count
= specpdl_ptr
- specpdl
;
5774 /* How many keys there are in the current key sequence. */
5777 /* The length of the echo buffer when we started reading, and
5778 the length of this_command_keys when we started reading. */
5782 /* The number of keymaps we're scanning right now, and the number of
5783 keymaps we have allocated space for. */
5785 int nmaps_allocated
= 0;
5787 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
5788 the current keymaps. */
5791 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
5792 in the current keymaps, or nil where it is not a prefix. */
5793 Lisp_Object
*submaps
;
5795 /* The local map to start out with at start of key sequence. */
5796 Lisp_Object orig_local_map
;
5798 /* 1 if we have already considered switching to the local-map property
5799 of the place where a mouse click occurred. */
5800 int localized_local_map
= 0;
5802 /* The index in defs[] of the first keymap that has a binding for
5803 this key sequence. In other words, the lowest i such that
5804 defs[i] is non-nil. */
5807 /* If t < mock_input, then KEYBUF[t] should be read as the next
5810 We use this to recover after recognizing a function key. Once we
5811 realize that a suffix of the current key sequence is actually a
5812 function key's escape sequence, we replace the suffix with the
5813 function key's binding from Vfunction_key_map. Now keybuf
5814 contains a new and different key sequence, so the echo area,
5815 this_command_keys, and the submaps and defs arrays are wrong. In
5816 this situation, we set mock_input to t, set t to 0, and jump to
5817 restart_sequence; the loop will read keys from keybuf up until
5818 mock_input, thus rebuilding the state; and then it will resume
5819 reading characters from the keyboard. */
5822 /* If the sequence is unbound in submaps[], then
5823 keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map,
5824 and fkey_map is its binding.
5826 These might be > t, indicating that all function key scanning
5827 should hold off until t reaches them. We do this when we've just
5828 recognized a function key, to avoid searching for the function
5829 key's again in Vfunction_key_map. */
5830 int fkey_start
= 0, fkey_end
= 0;
5831 Lisp_Object fkey_map
;
5833 /* Likewise, for key_translation_map. */
5834 int keytran_start
= 0, keytran_end
= 0;
5835 Lisp_Object keytran_map
;
5837 /* If we receive a ``switch-frame'' event in the middle of a key sequence,
5838 we put it off for later. While we're reading, we keep the event here. */
5839 Lisp_Object delayed_switch_frame
;
5841 /* See the comment below... */
5842 #if defined (GOBBLE_FIRST_EVENT)
5843 Lisp_Object first_event
;
5846 Lisp_Object original_uppercase
;
5847 int original_uppercase_position
= -1;
5849 /* Gets around Microsoft compiler limitations. */
5852 struct buffer
*starting_buffer
;
5854 /* Nonzero if we seem to have got the beginning of a binding
5855 in function_key_map. */
5856 int function_key_possible
= 0;
5857 int key_translation_possible
= 0;
5859 /* Save the status of key translation before each step,
5860 so that we can restore this after downcasing. */
5861 Lisp_Object prev_fkey_map
;
5862 Lisp_Object prev_fkey_start
;
5863 Lisp_Object prev_fkey_end
;
5865 Lisp_Object prev_keytran_map
;
5866 Lisp_Object prev_keytran_start
;
5867 Lisp_Object prev_keytran_end
;
5871 last_nonmenu_event
= Qnil
;
5873 delayed_switch_frame
= Qnil
;
5874 fkey_map
= Vfunction_key_map
;
5875 keytran_map
= Vkey_translation_map
;
5877 /* If there is no function-key-map, turn off function key scanning. */
5878 if (NILP (Fkeymapp (Vfunction_key_map
)))
5879 fkey_start
= fkey_end
= bufsize
+ 1;
5881 /* If there is no key-translation-map, turn off scanning. */
5882 if (NILP (Fkeymapp (Vkey_translation_map
)))
5883 keytran_start
= keytran_end
= bufsize
+ 1;
5888 echo_prompt (XSTRING (prompt
)->data
);
5889 else if (cursor_in_echo_area
&& echo_keystrokes
)
5890 /* This doesn't put in a dash if the echo buffer is empty, so
5891 you don't always see a dash hanging out in the minibuffer. */
5895 /* Record the initial state of the echo area and this_command_keys;
5896 we will need to restore them if we replay a key sequence. */
5898 echo_start
= echo_length ();
5899 keys_start
= this_command_key_count
;
5900 this_single_command_key_start
= keys_start
;
5902 #if defined (GOBBLE_FIRST_EVENT)
5903 /* This doesn't quite work, because some of the things that read_char
5904 does cannot safely be bypassed. It seems too risky to try to make
5907 /* Read the first char of the sequence specially, before setting
5908 up any keymaps, in case a filter runs and switches buffers on us. */
5909 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
5911 #endif /* GOBBLE_FIRST_EVENT */
5913 orig_local_map
= get_local_map (PT
, current_buffer
);
5915 /* We jump here when the key sequence has been thoroughly changed, and
5916 we need to rescan it starting from the beginning. When we jump here,
5917 keybuf[0..mock_input] holds the sequence we should reread. */
5920 starting_buffer
= current_buffer
;
5921 function_key_possible
= 0;
5922 key_translation_possible
= 0;
5924 /* Build our list of keymaps.
5925 If we recognize a function key and replace its escape sequence in
5926 keybuf with its symbol, or if the sequence starts with a mouse
5927 click and we need to switch buffers, we jump back here to rebuild
5928 the initial keymaps from the current buffer. */
5932 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
5933 || !NILP (Voverriding_local_map
))
5935 if (3 > nmaps_allocated
)
5937 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
5938 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
5939 nmaps_allocated
= 3;
5942 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
5943 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
5944 if (!NILP (Voverriding_local_map
))
5945 submaps
[nmaps
++] = Voverriding_local_map
;
5949 nmaps
= current_minor_maps (0, &maps
);
5950 if (nmaps
+ 2 > nmaps_allocated
)
5952 submaps
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (submaps
[0]));
5953 defs
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (defs
[0]));
5954 nmaps_allocated
= nmaps
+ 2;
5956 bcopy (maps
, submaps
, nmaps
* sizeof (submaps
[0]));
5957 #ifdef USE_TEXT_PROPERTIES
5958 submaps
[nmaps
++] = orig_local_map
;
5960 submaps
[nmaps
++] = current_buffer
->keymap
;
5963 submaps
[nmaps
++] = current_global_map
;
5966 /* Find an accurate initial value for first_binding. */
5967 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
5968 if (! NILP (submaps
[first_binding
]))
5971 /* Start from the beginning in keybuf. */
5974 /* These are no-ops the first time through, but if we restart, they
5975 revert the echo area and this_command_keys to their original state. */
5976 this_command_key_count
= keys_start
;
5977 if (INTERACTIVE
&& t
< mock_input
)
5978 echo_truncate (echo_start
);
5980 /* If the best binding for the current key sequence is a keymap, or
5981 we may be looking at a function key's escape sequence, keep on
5983 while ((first_binding
< nmaps
&& ! NILP (submaps
[first_binding
]))
5984 || (first_binding
>= nmaps
5986 /* mock input is never part of a function key's sequence. */
5987 && mock_input
<= fkey_start
)
5988 || (first_binding
>= nmaps
5989 && keytran_start
< t
&& key_translation_possible
)
5990 /* Don't return in the middle of a possible function key sequence,
5991 if the only bindings we found were via case conversion.
5992 Thus, if ESC O a has a function-key-map translation
5993 and ESC o has a binding, don't return after ESC O,
5994 so that we can translate ESC O plus the next character. */
5998 int used_mouse_menu
= 0;
6000 /* Where the last real key started. If we need to throw away a
6001 key that has expanded into more than one element of keybuf
6002 (say, a mouse click on the mode line which is being treated
6003 as [mode-line (mouse-...)], then we backtrack to this point
6005 int last_real_key_start
;
6007 /* These variables are analogous to echo_start and keys_start;
6008 while those allow us to restart the entire key sequence,
6009 echo_local_start and keys_local_start allow us to throw away
6011 int echo_local_start
, keys_local_start
, local_first_binding
;
6014 error ("Key sequence too long");
6017 echo_local_start
= echo_length ();
6018 keys_local_start
= this_command_key_count
;
6019 local_first_binding
= first_binding
;
6022 /* These are no-ops, unless we throw away a keystroke below and
6023 jumped back up to replay_key; in that case, these restore the
6024 variables to their original state, allowing us to replay the
6026 if (INTERACTIVE
&& t
< mock_input
)
6027 echo_truncate (echo_local_start
);
6028 this_command_key_count
= keys_local_start
;
6029 first_binding
= local_first_binding
;
6031 /* By default, assume each event is "real". */
6032 last_real_key_start
= t
;
6034 /* Does mock_input indicate that we are re-reading a key sequence? */
6038 add_command_key (key
);
6039 if (echo_keystrokes
)
6043 /* If not, we should actually read a character. */
6046 struct buffer
*buf
= current_buffer
;
6050 KBOARD
*interrupted_kboard
= current_kboard
;
6051 struct frame
*interrupted_frame
= selected_frame
;
6052 if (setjmp (wrong_kboard_jmpbuf
))
6054 if (!NILP (delayed_switch_frame
))
6056 interrupted_kboard
->kbd_queue
6057 = Fcons (delayed_switch_frame
,
6058 interrupted_kboard
->kbd_queue
);
6059 delayed_switch_frame
= Qnil
;
6062 interrupted_kboard
->kbd_queue
6063 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
6065 /* If the side queue is non-empty, ensure it begins with a
6066 switch-frame, so we'll replay it in the right context. */
6067 if (CONSP (interrupted_kboard
->kbd_queue
)
6068 && (key
= XCONS (interrupted_kboard
->kbd_queue
)->car
,
6069 !(EVENT_HAS_PARAMETERS (key
)
6070 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
6074 XSETFRAME (frame
, interrupted_frame
);
6075 interrupted_kboard
->kbd_queue
6076 = Fcons (make_lispy_switch_frame (frame
),
6077 interrupted_kboard
->kbd_queue
);
6080 orig_local_map
= get_local_map (PT
, current_buffer
);
6081 goto replay_sequence
;
6084 key
= read_char (NILP (prompt
), nmaps
, submaps
, last_nonmenu_event
,
6088 /* read_char returns t when it shows a menu and the user rejects it.
6093 /* read_char returns -1 at the end of a macro.
6094 Emacs 18 handles this by returning immediately with a
6095 zero, so that's what we'll do. */
6096 if (INTEGERP (key
) && XINT (key
) == -1)
6099 /* The Microsoft C compiler can't handle the goto that
6105 /* If the current buffer has been changed from under us, the
6106 keymap may have changed, so replay the sequence. */
6110 orig_local_map
= get_local_map (PT
, current_buffer
);
6111 goto replay_sequence
;
6114 /* If we have a quit that was typed in another frame, and
6115 quit_throw_to_read_char switched buffers,
6116 replay to get the right keymap. */
6117 if (XINT (key
) == quit_char
&& current_buffer
!= starting_buffer
)
6122 orig_local_map
= get_local_map (PT
, current_buffer
);
6123 goto replay_sequence
;
6129 /* Clicks in non-text areas get prefixed by the symbol
6130 in their CHAR-ADDRESS field. For example, a click on
6131 the mode line is prefixed by the symbol `mode-line'.
6133 Furthermore, key sequences beginning with mouse clicks
6134 are read using the keymaps of the buffer clicked on, not
6135 the current buffer. So we may have to switch the buffer
6138 When we turn one event into two events, we must make sure
6139 that neither of the two looks like the original--so that,
6140 if we replay the events, they won't be expanded again.
6141 If not for this, such reexpansion could happen either here
6142 or when user programs play with this-command-keys. */
6143 if (EVENT_HAS_PARAMETERS (key
))
6147 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
6148 if (EQ (kind
, Qmouse_click
))
6150 Lisp_Object window
, posn
;
6152 window
= POSN_WINDOW (EVENT_START (key
));
6153 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6156 /* We're looking at the second event of a
6157 sequence which we expanded before. Set
6158 last_real_key_start appropriately. */
6160 last_real_key_start
= t
- 1;
6163 /* Key sequences beginning with mouse clicks are
6164 read using the keymaps in the buffer clicked on,
6165 not the current buffer. If we're at the
6166 beginning of a key sequence, switch buffers. */
6167 if (last_real_key_start
== 0
6169 && BUFFERP (XWINDOW (window
)->buffer
)
6170 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
6175 /* Arrange to go back to the original buffer once we're
6176 done reading the key sequence. Note that we can't
6177 use save_excursion_{save,restore} here, because they
6178 save point as well as the current buffer; we don't
6179 want to save point, because redisplay may change it,
6180 to accommodate a Fset_window_start or something. We
6181 don't want to do this at the top of the function,
6182 because we may get input from a subprocess which
6183 wants to change the selected window and stuff (say,
6185 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
6187 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
6188 orig_local_map
= get_local_map (PT
, current_buffer
);
6189 goto replay_sequence
;
6191 /* For a mouse click, get the local text-property keymap
6192 of the place clicked on, rather than point. */
6193 if (last_real_key_start
== 0 && CONSP (XCONS (key
)->cdr
)
6194 && ! localized_local_map
)
6196 Lisp_Object map_here
, start
, pos
;
6198 localized_local_map
= 1;
6199 start
= EVENT_START (key
);
6200 if (CONSP (start
) && CONSP (XCONS (start
)->cdr
))
6202 pos
= POSN_BUFFER_POSN (start
);
6204 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
6206 map_here
= get_local_map (XINT (pos
), current_buffer
);
6207 if (!EQ (map_here
, orig_local_map
))
6209 orig_local_map
= map_here
;
6213 goto replay_sequence
;
6219 /* Expand mode-line and scroll-bar events into two events:
6220 use posn as a fake prefix key. */
6223 if (t
+ 1 >= bufsize
)
6224 error ("Key sequence too long");
6229 /* Zap the position in key, so we know that we've
6230 expanded it, and don't try to do so again. */
6231 POSN_BUFFER_POSN (EVENT_START (key
))
6232 = Fcons (posn
, Qnil
);
6236 else if (EQ (kind
, Qswitch_frame
))
6238 /* If we're at the beginning of a key sequence, and the caller
6239 says it's okay, go ahead and return this event. If we're
6240 in the midst of a key sequence, delay it until the end. */
6241 if (t
> 0 || !can_return_switch_frame
)
6243 delayed_switch_frame
= key
;
6247 else if (CONSP (XCONS (key
)->cdr
)
6248 && CONSP (EVENT_START (key
))
6249 && CONSP (XCONS (EVENT_START (key
))->cdr
))
6253 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6254 /* Handle menu-bar events:
6255 insert the dummy prefix event `menu-bar'. */
6256 if (EQ (posn
, Qmenu_bar
))
6258 if (t
+ 1 >= bufsize
)
6259 error ("Key sequence too long");
6263 /* Zap the position in key, so we know that we've
6264 expanded it, and don't try to do so again. */
6265 POSN_BUFFER_POSN (EVENT_START (key
))
6266 = Fcons (posn
, Qnil
);
6269 goto replay_sequence
;
6271 else if (CONSP (posn
))
6273 /* We're looking at the second event of a
6274 sequence which we expanded before. Set
6275 last_real_key_start appropriately. */
6276 if (last_real_key_start
== t
&& t
> 0)
6277 last_real_key_start
= t
- 1;
6282 /* We have finally decided that KEY is something we might want
6284 first_binding
= (follow_key (key
,
6285 nmaps
- first_binding
,
6286 submaps
+ first_binding
,
6287 defs
+ first_binding
,
6288 submaps
+ first_binding
)
6291 /* If KEY wasn't bound, we'll try some fallbacks. */
6292 if (first_binding
>= nmaps
)
6296 head
= EVENT_HEAD (key
);
6297 if (help_char_p (head
) && t
> 0)
6299 read_key_sequence_cmd
= Vprefix_help_command
;
6301 last_nonmenu_event
= key
;
6302 /* The Microsoft C compiler can't handle the goto that
6310 Lisp_Object breakdown
;
6313 breakdown
= parse_modifiers (head
);
6314 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6315 /* Attempt to reduce an unbound mouse event to a simpler
6316 event that is bound:
6317 Drags reduce to clicks.
6318 Double-clicks reduce to clicks.
6319 Triple-clicks reduce to double-clicks, then to clicks.
6320 Down-clicks are eliminated.
6321 Double-downs reduce to downs, then are eliminated.
6322 Triple-downs reduce to double-downs, then to downs,
6323 then are eliminated. */
6324 if (modifiers
& (down_modifier
| drag_modifier
6325 | double_modifier
| triple_modifier
))
6327 while (modifiers
& (down_modifier
| drag_modifier
6328 | double_modifier
| triple_modifier
))
6330 Lisp_Object new_head
, new_click
;
6331 if (modifiers
& triple_modifier
)
6332 modifiers
^= (double_modifier
| triple_modifier
);
6333 else if (modifiers
& double_modifier
)
6334 modifiers
&= ~double_modifier
;
6335 else if (modifiers
& drag_modifier
)
6336 modifiers
&= ~drag_modifier
;
6339 /* Dispose of this `down' event by simply jumping
6340 back to replay_key, to get another event.
6342 Note that if this event came from mock input,
6343 then just jumping back to replay_key will just
6344 hand it to us again. So we have to wipe out any
6347 We could delete keybuf[t] and shift everything
6348 after that to the left by one spot, but we'd also
6349 have to fix up any variable that points into
6350 keybuf, and shifting isn't really necessary
6353 Adding prefixes for non-textual mouse clicks
6354 creates two characters of mock input, and both
6355 must be thrown away. If we're only looking at
6356 the prefix now, we can just jump back to
6357 replay_key. On the other hand, if we've already
6358 processed the prefix, and now the actual click
6359 itself is giving us trouble, then we've lost the
6360 state of the keymaps we want to backtrack to, and
6361 we need to replay the whole sequence to rebuild
6364 Beyond that, only function key expansion could
6365 create more than two keys, but that should never
6366 generate mouse events, so it's okay to zero
6367 mock_input in that case too.
6369 Isn't this just the most wonderful code ever? */
6370 if (t
== last_real_key_start
)
6377 mock_input
= last_real_key_start
;
6378 goto replay_sequence
;
6383 = apply_modifiers (modifiers
, XCONS (breakdown
)->car
);
6385 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
6387 /* Look for a binding for this new key. follow_key
6388 promises that it didn't munge submaps the
6389 last time we called it, since key was unbound. */
6391 = (follow_key (new_click
,
6392 nmaps
- local_first_binding
,
6393 submaps
+ local_first_binding
,
6394 defs
+ local_first_binding
,
6395 submaps
+ local_first_binding
)
6396 + local_first_binding
);
6398 /* If that click is bound, go for it. */
6399 if (first_binding
< nmaps
)
6404 /* Otherwise, we'll leave key set to the drag event. */
6411 /* Normally, last_nonmenu_event gets the previous key we read.
6412 But when a mouse popup menu is being used,
6413 we don't update last_nonmenu_event; it continues to hold the mouse
6414 event that preceded the first level of menu. */
6415 if (!used_mouse_menu
)
6416 last_nonmenu_event
= key
;
6418 /* Record what part of this_command_keys is the current key sequence. */
6419 this_single_command_key_start
= this_command_key_count
- t
;
6421 prev_fkey_map
= fkey_map
;
6422 prev_fkey_start
= fkey_start
;
6423 prev_fkey_end
= fkey_end
;
6425 prev_keytran_map
= keytran_map
;
6426 prev_keytran_start
= keytran_start
;
6427 prev_keytran_end
= keytran_end
;
6429 /* If the sequence is unbound, see if we can hang a function key
6430 off the end of it. We only want to scan real keyboard input
6431 for function key sequences, so if mock_input says that we're
6432 re-reading old events, don't examine it. */
6433 if (first_binding
>= nmaps
6436 Lisp_Object fkey_next
;
6438 /* Continue scan from fkey_end until we find a bound suffix.
6439 If we fail, increment fkey_start
6440 and start fkey_end from there. */
6441 while (fkey_end
< t
)
6445 key
= keybuf
[fkey_end
++];
6446 /* Look up meta-characters by prefixing them
6447 with meta_prefix_char. I hate this. */
6448 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6453 (access_keymap (fkey_map
, meta_prefix_char
, 1, 0)),
6455 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6458 fkey_next
= fkey_map
;
6461 = get_keyelt (access_keymap (fkey_next
, key
, 1, 0));
6463 #if 0 /* I didn't turn this on, because it might cause trouble
6464 for the mapping of return into C-m and tab into C-i. */
6465 /* Optionally don't map function keys into other things.
6466 This enables the user to redefine kp- keys easily. */
6467 if (SYMBOLP (key
) && !NILP (Vinhibit_function_key_mapping
))
6471 /* If the function key map gives a function, not an
6472 array, then call the function with no args and use
6473 its value instead. */
6474 if (SYMBOLP (fkey_next
) && ! NILP (Ffboundp (fkey_next
))
6477 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6481 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6482 fkey_next
= call1 (fkey_next
, prompt
);
6484 /* If the function returned something invalid,
6485 barf--don't ignore it.
6486 (To ignore it safely, we would need to gcpro a bunch of
6487 other variables.) */
6488 if (! (VECTORP (fkey_next
) || STRINGP (fkey_next
)))
6489 error ("Function in key-translation-map returns invalid key sequence");
6492 function_key_possible
= ! NILP (fkey_next
);
6494 /* If keybuf[fkey_start..fkey_end] is bound in the
6495 function key map and it's a suffix of the current
6496 sequence (i.e. fkey_end == t), replace it with
6497 the binding and restart with fkey_start at the end. */
6498 if ((VECTORP (fkey_next
) || STRINGP (fkey_next
))
6501 int len
= XFASTINT (Flength (fkey_next
));
6503 t
= fkey_start
+ len
;
6505 error ("Key sequence too long");
6507 if (VECTORP (fkey_next
))
6508 bcopy (XVECTOR (fkey_next
)->contents
,
6509 keybuf
+ fkey_start
,
6510 (t
- fkey_start
) * sizeof (keybuf
[0]));
6511 else if (STRINGP (fkey_next
))
6515 for (i
= 0; i
< len
; i
++)
6516 XSETFASTINT (keybuf
[fkey_start
+ i
],
6517 XSTRING (fkey_next
)->data
[i
]);
6521 fkey_start
= fkey_end
= t
;
6522 fkey_map
= Vfunction_key_map
;
6524 /* Do pass the results through key-translation-map. */
6525 keytran_start
= keytran_end
= 0;
6526 keytran_map
= Vkey_translation_map
;
6528 goto replay_sequence
;
6531 fkey_map
= get_keymap_1 (fkey_next
, 0, 1);
6533 /* If we no longer have a bound suffix, try a new positions for
6535 if (NILP (fkey_map
))
6537 fkey_end
= ++fkey_start
;
6538 fkey_map
= Vfunction_key_map
;
6539 function_key_possible
= 0;
6544 /* Look for this sequence in key-translation-map. */
6546 Lisp_Object keytran_next
;
6548 /* Scan from keytran_end until we find a bound suffix. */
6549 while (keytran_end
< t
)
6553 key
= keybuf
[keytran_end
++];
6554 /* Look up meta-characters by prefixing them
6555 with meta_prefix_char. I hate this. */
6556 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6561 (access_keymap (keytran_map
, meta_prefix_char
, 1, 0)),
6563 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6566 keytran_next
= keytran_map
;
6569 = get_keyelt (access_keymap (keytran_next
, key
, 1, 0));
6571 /* If the key translation map gives a function, not an
6572 array, then call the function with no args and use
6573 its value instead. */
6574 if (SYMBOLP (keytran_next
) && ! NILP (Ffboundp (keytran_next
))
6575 && keytran_end
== t
)
6577 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6581 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6582 keytran_next
= call1 (keytran_next
, prompt
);
6584 /* If the function returned something invalid,
6585 barf--don't ignore it.
6586 (To ignore it safely, we would need to gcpro a bunch of
6587 other variables.) */
6588 if (! (VECTORP (keytran_next
) || STRINGP (keytran_next
)))
6589 error ("Function in key-translation-map returns invalid key sequence");
6592 key_translation_possible
= ! NILP (keytran_next
);
6594 /* If keybuf[keytran_start..keytran_end] is bound in the
6595 key translation map and it's a suffix of the current
6596 sequence (i.e. keytran_end == t), replace it with
6597 the binding and restart with keytran_start at the end. */
6598 if ((VECTORP (keytran_next
) || STRINGP (keytran_next
))
6599 && keytran_end
== t
)
6601 int len
= XFASTINT (Flength (keytran_next
));
6603 t
= keytran_start
+ len
;
6605 error ("Key sequence too long");
6607 if (VECTORP (keytran_next
))
6608 bcopy (XVECTOR (keytran_next
)->contents
,
6609 keybuf
+ keytran_start
,
6610 (t
- keytran_start
) * sizeof (keybuf
[0]));
6611 else if (STRINGP (keytran_next
))
6615 for (i
= 0; i
< len
; i
++)
6616 XSETFASTINT (keybuf
[keytran_start
+ i
],
6617 XSTRING (keytran_next
)->data
[i
]);
6621 keytran_start
= keytran_end
= t
;
6622 keytran_map
= Vkey_translation_map
;
6624 /* Don't pass the results of key-translation-map
6625 through function-key-map. */
6626 fkey_start
= fkey_end
= t
;
6627 fkey_map
= Vkey_translation_map
;
6629 goto replay_sequence
;
6632 keytran_map
= get_keymap_1 (keytran_next
, 0, 1);
6634 /* If we no longer have a bound suffix, try a new positions for
6636 if (NILP (keytran_map
))
6638 keytran_end
= ++keytran_start
;
6639 keytran_map
= Vkey_translation_map
;
6640 key_translation_possible
= 0;
6645 /* If KEY is not defined in any of the keymaps,
6646 and cannot be part of a function key or translation,
6647 and is an upper case letter
6648 use the corresponding lower-case letter instead. */
6649 if (first_binding
== nmaps
&& ! function_key_possible
6650 && ! key_translation_possible
6652 && ((((XINT (key
) & 0x3ffff)
6653 < XSTRING (current_buffer
->downcase_table
)->size
)
6654 && UPPERCASEP (XINT (key
) & 0x3ffff))
6655 || (XINT (key
) & shift_modifier
)))
6657 Lisp_Object new_key
;
6659 original_uppercase
= key
;
6660 original_uppercase_position
= t
- 1;
6662 if (XINT (key
) & shift_modifier
)
6663 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
6665 XSETINT (new_key
, (DOWNCASE (XINT (key
) & 0x3ffff)
6666 | (XINT (key
) & ~0x3ffff)));
6668 /* We have to do this unconditionally, regardless of whether
6669 the lower-case char is defined in the keymaps, because they
6670 might get translated through function-key-map. */
6671 keybuf
[t
- 1] = new_key
;
6674 fkey_map
= prev_fkey_map
;
6675 fkey_start
= prev_fkey_start
;
6676 fkey_end
= prev_fkey_end
;
6678 keytran_map
= prev_keytran_map
;
6679 keytran_start
= prev_keytran_start
;
6680 keytran_end
= prev_keytran_end
;
6682 goto replay_sequence
;
6684 /* If KEY is not defined in any of the keymaps,
6685 and cannot be part of a function key or translation,
6686 and is a shifted function key,
6687 use the corresponding unshifted function key instead. */
6688 if (first_binding
== nmaps
&& ! function_key_possible
6689 && ! key_translation_possible
6692 Lisp_Object breakdown
;
6695 breakdown
= parse_modifiers (key
);
6696 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6697 if (modifiers
& shift_modifier
)
6699 Lisp_Object new_key
;
6701 original_uppercase
= key
;
6702 original_uppercase_position
= t
- 1;
6704 modifiers
&= ~shift_modifier
;
6705 new_key
= apply_modifiers (modifiers
,
6706 XCONS (breakdown
)->car
);
6708 keybuf
[t
- 1] = new_key
;
6711 fkey_map
= prev_fkey_map
;
6712 fkey_start
= prev_fkey_start
;
6713 fkey_end
= prev_fkey_end
;
6715 keytran_map
= prev_keytran_map
;
6716 keytran_start
= prev_keytran_start
;
6717 keytran_end
= prev_keytran_end
;
6719 goto replay_sequence
;
6725 read_key_sequence_cmd
= (first_binding
< nmaps
6726 ? defs
[first_binding
]
6729 unread_switch_frame
= delayed_switch_frame
;
6730 unbind_to (count
, Qnil
);
6732 /* Don't downcase the last character if the caller says don't.
6733 Don't downcase it if the result is undefined, either. */
6734 if ((dont_downcase_last
|| first_binding
>= nmaps
)
6735 && t
- 1 == original_uppercase_position
)
6736 keybuf
[t
- 1] = original_uppercase
;
6738 /* Occasionally we fabricate events, perhaps by expanding something
6739 according to function-key-map, or by adding a prefix symbol to a
6740 mouse click in the scroll bar or modeline. In this cases, return
6741 the entire generated key sequence, even if we hit an unbound
6742 prefix or a definition before the end. This means that you will
6743 be able to push back the event properly, and also means that
6744 read-key-sequence will always return a logical unit.
6747 for (; t
< mock_input
; t
++)
6749 if (echo_keystrokes
)
6750 echo_char (keybuf
[t
]);
6751 add_command_key (keybuf
[t
]);
6757 #if 0 /* This doc string is too long for some compilers.
6758 This commented-out definition serves for DOC. */
6759 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6760 "Read a sequence of keystrokes and return as a string or vector.\n\
6761 The sequence is sufficient to specify a non-prefix command in the\n\
6762 current local and global maps.\n\
6764 First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\
6765 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\
6766 as a continuation of the previous key.\n\
6768 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\
6769 convert the last event to lower case. (Normally any upper case event\n\
6770 is converted to lower case if the original event is undefined and the lower\n\
6771 case equivalent is defined.) A non-nil value is appropriate for reading\n\
6772 a key sequence to be defined.\n\
6774 A C-g typed while in this function is treated like any other character,\n\
6775 and `quit-flag' is not set.\n\
6777 If the key sequence starts with a mouse click, then the sequence is read\n\
6778 using the keymaps of the buffer of the window clicked in, not the buffer\n\
6779 of the selected window as normal.\n\
6781 `read-key-sequence' drops unbound button-down events, since you normally\n\
6782 only care about the click or drag events which follow them. If a drag\n\
6783 or multi-click event is unbound, but the corresponding click event would\n\
6784 be bound, `read-key-sequence' turns the event into a click event at the\n\
6785 drag's starting position. This means that you don't have to distinguish\n\
6786 between click and drag, double, or triple events unless you want to.\n\
6788 `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\
6789 lines separating windows, and scroll bars with imaginary keys\n\
6790 `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\
6792 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\
6793 function will process a switch-frame event if the user switches frames\n\
6794 before typing anything. If the user switches frames in the middle of a\n\
6795 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\
6796 is nil, then the event will be put off until after the current key sequence.\n\
6798 `read-key-sequence' checks `function-key-map' for function key\n\
6799 sequences, where they wouldn't conflict with ordinary bindings. See\n\
6800 `function-key-map' for more details.")
6801 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6804 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6806 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6807 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
6808 Lisp_Object can_return_switch_frame
;
6810 Lisp_Object keybuf
[30];
6812 struct gcpro gcpro1
, gcpro2
;
6815 CHECK_STRING (prompt
, 0);
6818 bzero (keybuf
, sizeof keybuf
);
6820 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
6822 if (NILP (continue_echo
))
6824 this_command_key_count
= 0;
6825 this_single_command_key_start
= 0;
6828 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
6829 prompt
, ! NILP (dont_downcase_last
),
6830 ! NILP (can_return_switch_frame
));
6838 return make_event_array (i
, keybuf
);
6841 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
6842 "Execute CMD as an editor command.\n\
6843 CMD must be a symbol that satisfies the `commandp' predicate.\n\
6844 Optional second arg RECORD-FLAG non-nil\n\
6845 means unconditionally put this command in `command-history'.\n\
6846 Otherwise, that is done only if an arg is read using the minibuffer.\n\
6847 The argument KEYS specifies the value to use instead of (this-command-keys)\n\
6848 when reading the arguments; if it is nil, (this-command-keys) is used.\n\
6849 The argument SPECIAL, if non-nil, means that this command is executing\n\
6850 a special event, so ignore the prefix argument and don't clear it.")
6851 (cmd
, record_flag
, keys
, special
)
6852 Lisp_Object cmd
, record_flag
, keys
, special
;
6854 register Lisp_Object final
;
6855 register Lisp_Object tem
;
6856 Lisp_Object prefixarg
;
6857 struct backtrace backtrace
;
6858 extern int debug_on_next_call
;
6860 debug_on_next_call
= 0;
6864 prefixarg
= current_kboard
->Vprefix_arg
;
6865 Vcurrent_prefix_arg
= prefixarg
;
6866 current_kboard
->Vprefix_arg
= Qnil
;
6873 tem
= Fget (cmd
, Qdisabled
);
6874 if (!NILP (tem
) && !NILP (Vrun_hooks
))
6876 tem
= Fsymbol_value (Qdisabled_command_hook
);
6878 return call1 (Vrun_hooks
, Qdisabled_command_hook
);
6884 final
= Findirect_function (cmd
);
6886 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
6887 do_autoload (final
, cmd
);
6892 if (STRINGP (final
) || VECTORP (final
))
6894 /* If requested, place the macro in the command history. For
6895 other sorts of commands, call-interactively takes care of
6897 if (!NILP (record_flag
))
6899 = Fcons (Fcons (Qexecute_kbd_macro
,
6900 Fcons (final
, Fcons (prefixarg
, Qnil
))),
6903 return Fexecute_kbd_macro (final
, prefixarg
);
6905 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
6907 backtrace
.next
= backtrace_list
;
6908 backtrace_list
= &backtrace
;
6909 backtrace
.function
= &Qcall_interactively
;
6910 backtrace
.args
= &cmd
;
6911 backtrace
.nargs
= 1;
6912 backtrace
.evalargs
= 0;
6914 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
6916 backtrace_list
= backtrace
.next
;
6922 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
6924 "Read function name, then read its arguments and call it.")
6926 Lisp_Object prefixarg
;
6928 Lisp_Object function
;
6930 Lisp_Object saved_keys
;
6931 struct gcpro gcpro1
;
6933 saved_keys
= Fvector (this_command_key_count
,
6934 XVECTOR (this_command_keys
)->contents
);
6936 GCPRO1 (saved_keys
);
6938 if (EQ (prefixarg
, Qminus
))
6940 else if (CONSP (prefixarg
) && XINT (XCONS (prefixarg
)->car
) == 4)
6941 strcpy (buf
, "C-u ");
6942 else if (CONSP (prefixarg
) && INTEGERP (XCONS (prefixarg
)->car
))
6944 if (sizeof (int) == sizeof (EMACS_INT
))
6945 sprintf (buf
, "%d ", XINT (XCONS (prefixarg
)->car
));
6946 else if (sizeof (long) == sizeof (EMACS_INT
))
6947 sprintf (buf
, "%ld ", XINT (XCONS (prefixarg
)->car
));
6951 else if (INTEGERP (prefixarg
))
6953 if (sizeof (int) == sizeof (EMACS_INT
))
6954 sprintf (buf
, "%d ", XINT (prefixarg
));
6955 else if (sizeof (long) == sizeof (EMACS_INT
))
6956 sprintf (buf
, "%ld ", XINT (prefixarg
));
6961 /* This isn't strictly correct if execute-extended-command
6962 is bound to anything else. Perhaps it should use
6963 this_command_keys? */
6964 strcat (buf
, "M-x ");
6966 /* Prompt with buf, and then read a string, completing from and
6967 restricting to the set of all defined commands. Don't provide
6968 any initial input. Save the command read on the extended-command
6970 function
= Fcompleting_read (build_string (buf
),
6971 Vobarray
, Qcommandp
,
6972 Qt
, Qnil
, Qextended_command_history
);
6974 if (STRINGP (function
) && XSTRING (function
)->size
== 0)
6975 error ("No command name given");
6977 /* Set this_command_keys to the concatenation of saved_keys and
6978 function, followed by a RET. */
6980 struct Lisp_String
*str
;
6985 this_command_key_count
= 0;
6986 this_single_command_key_start
= 0;
6988 keys
= XVECTOR (saved_keys
)->contents
;
6989 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
6990 add_command_key (keys
[i
]);
6992 str
= XSTRING (function
);
6993 for (i
= 0; i
< str
->size
; i
++)
6995 XSETFASTINT (tem
, str
->data
[i
]);
6996 add_command_key (tem
);
6999 XSETFASTINT (tem
, '\015');
7000 add_command_key (tem
);
7005 function
= Fintern (function
, Qnil
);
7006 current_kboard
->Vprefix_arg
= prefixarg
;
7007 this_command
= function
;
7009 /* If enabled, show which key runs this command. */
7010 if (!NILP (Vsuggest_key_bindings
)
7011 && NILP (Vexecuting_macro
)
7012 && SYMBOLP (function
))
7014 Lisp_Object bindings
;
7016 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
7019 if (!NILP (bindings
))
7021 message ("You can run the command `%s' by typing %s",
7022 XSYMBOL (function
)->name
->data
,
7023 XSTRING (Fkey_description (bindings
))->data
);
7024 Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
7025 ? Vsuggest_key_bindings
: make_number (2)),
7030 return Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
7033 /* Find the set of keymaps now active.
7034 Store into *MAPS_P a vector holding the various maps
7035 and return the number of them. The vector was malloc'd
7036 and the caller should free it. */
7039 current_active_maps (maps_p
)
7040 Lisp_Object
**maps_p
;
7042 Lisp_Object
*tmaps
, *maps
;
7045 /* Should overriding-terminal-local-map and overriding-local-map apply? */
7046 if (!NILP (Voverriding_local_map_menu_flag
))
7048 /* Yes, use them (if non-nil) as well as the global map. */
7049 maps
= (Lisp_Object
*) xmalloc (3 * sizeof (maps
[0]));
7051 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
7052 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
7053 if (!NILP (Voverriding_local_map
))
7054 maps
[nmaps
++] = Voverriding_local_map
;
7058 /* No, so use major and minor mode keymaps. */
7059 nmaps
= current_minor_maps (NULL
, &tmaps
);
7060 maps
= (Lisp_Object
*) xmalloc ((nmaps
+ 2) * sizeof (maps
[0]));
7061 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
7062 #ifdef USE_TEXT_PROPERTIES
7063 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
7065 maps
[nmaps
++] = current_buffer
->keymap
;
7068 maps
[nmaps
++] = current_global_map
;
7074 /* Return nonzero if input events are pending. */
7076 detect_input_pending ()
7079 get_input_pending (&input_pending
, 0);
7081 return input_pending
;
7084 /* Return nonzero if input events are pending, and run any pending timers. */
7086 detect_input_pending_run_timers (do_display
)
7089 int old_timers_run
= timers_run
;
7092 get_input_pending (&input_pending
, 1);
7094 if (old_timers_run
!= timers_run
&& do_display
)
7095 redisplay_preserve_echo_area ();
7097 return input_pending
;
7100 /* This is called in some cases before a possible quit.
7101 It cases the next call to detect_input_pending to recompute input_pending.
7102 So calling this function unnecessarily can't do any harm. */
7103 clear_input_pending ()
7108 /* Return nonzero if there are pending requeued events.
7109 This isn't used yet. The hope is to make wait_reading_process_input
7110 call it, and return return if it runs Lisp code that unreads something.
7111 The problem is, kbd_buffer_get_event needs to be fixed to know what
7112 to do in that case. It isn't trivial. */
7114 requeued_events_pending_p ()
7116 return (!NILP (Vunread_command_events
) || unread_command_char
!= -1);
7120 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
7121 "T if command input is currently available with no waiting.\n\
7122 Actually, the value is nil only if we can be sure that no input is available.")
7125 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
7128 get_input_pending (&input_pending
, 1);
7129 return input_pending
> 0 ? Qt
: Qnil
;
7132 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
7133 "Return vector of last 100 events, not counting those from keyboard macros.")
7136 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
7139 if (total_keys
< NUM_RECENT_KEYS
)
7140 return Fvector (total_keys
, keys
);
7143 val
= Fvector (NUM_RECENT_KEYS
, keys
);
7144 bcopy (keys
+ recent_keys_index
,
7145 XVECTOR (val
)->contents
,
7146 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
7148 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
7149 recent_keys_index
* sizeof (Lisp_Object
));
7154 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
7155 "Return the key sequence that invoked this command.\n\
7156 The value is a string or a vector.")
7159 return make_event_array (this_command_key_count
,
7160 XVECTOR (this_command_keys
)->contents
);
7163 DEFUN ("this-single-command-keys", Fthis_single_command_keys
,
7164 Sthis_single_command_keys
, 0, 0, 0,
7165 "Return the key sequence that invoked this command.\n\
7166 Unlike `this-command-keys', this function's value\n\
7167 does not include prefix arguments.\n\
7168 The value is a string or a vector.")
7171 return make_event_array (this_command_key_count
7172 - this_single_command_key_start
,
7173 (XVECTOR (this_command_keys
)->contents
7174 + this_single_command_key_start
));
7177 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
7178 Sreset_this_command_lengths
, 0, 0, 0,
7179 "Used for complicated reasons in `universal-argument-other-key'.\n\
7181 `universal-argument-other-key' rereads the event just typed.\n\
7182 It then gets translated through `function-key-map'.\n\
7183 The translated event gets included in the echo area and in\n\
7184 the value of `this-command-keys' in addition to the raw original event.\n\
7185 That is not right.\n\
7187 Calling this function directs the translated event to replace\n\
7188 the original event, so that only one version of the event actually\n\
7189 appears in the echo area and in the value of `this-command-keys.'.")
7192 before_command_restore_flag
= 1;
7193 before_command_key_count_1
= before_command_key_count
;
7194 before_command_echo_length_1
= before_command_echo_length
;
7197 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
7198 "Return the current depth in recursive edits.")
7202 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
7206 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
7207 "FOpen dribble file: ",
7208 "Start writing all keyboard characters to a dribble file called FILE.\n\
7209 If FILE is nil, close any open dribble file.")
7220 file
= Fexpand_file_name (file
, Qnil
);
7221 dribble
= fopen (XSTRING (file
)->data
, "w");
7223 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
7228 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
7229 "Discard the contents of the terminal input buffer.\n\
7230 Also cancel any kbd macro being defined.")
7233 current_kboard
->defining_kbd_macro
= Qnil
;
7234 update_mode_lines
++;
7236 Vunread_command_events
= Qnil
;
7237 unread_command_char
= -1;
7239 discard_tty_input ();
7241 /* Without the cast, GCC complains that this assignment loses the
7242 volatile qualifier of kbd_store_ptr. Is there anything wrong
7244 kbd_fetch_ptr
= (struct input_event
*) kbd_store_ptr
;
7245 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7251 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
7252 "Stop Emacs and return to superior process. You can resume later.\n\
7253 If `cannot-suspend' is non-nil, or if the system doesn't support job\n\
7254 control, run a subshell instead.\n\n\
7255 If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\
7256 to be read as terminal input by Emacs's parent, after suspension.\n\
7258 Before suspending, run the normal hook `suspend-hook'.\n\
7259 After resumption run the normal hook `suspend-resume-hook'.\n\
7261 Some operating systems cannot stop the Emacs process and resume it later.\n\
7262 On such systems, Emacs starts a subshell instead of suspending.")
7264 Lisp_Object stuffstring
;
7267 int count
= specpdl_ptr
- specpdl
;
7268 int old_height
, old_width
;
7270 struct gcpro gcpro1
, gcpro2
;
7271 extern init_sys_modes ();
7273 if (!NILP (stuffstring
))
7274 CHECK_STRING (stuffstring
, 0);
7276 /* Run the functions in suspend-hook. */
7277 if (!NILP (Vrun_hooks
))
7278 call1 (Vrun_hooks
, intern ("suspend-hook"));
7280 GCPRO1 (stuffstring
);
7281 get_frame_size (&old_width
, &old_height
);
7283 /* sys_suspend can get an error if it tries to fork a subshell
7284 and the system resources aren't available for that. */
7285 record_unwind_protect (init_sys_modes
, 0);
7286 stuff_buffered_input (stuffstring
);
7291 unbind_to (count
, Qnil
);
7293 /* Check if terminal/window size has changed.
7294 Note that this is not useful when we are running directly
7295 with a window system; but suspend should be disabled in that case. */
7296 get_frame_size (&width
, &height
);
7297 if (width
!= old_width
|| height
!= old_height
)
7298 change_frame_size (selected_frame
, height
, width
, 0, 0);
7300 /* Run suspend-resume-hook. */
7301 if (!NILP (Vrun_hooks
))
7302 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
7308 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
7309 Then in any case stuff anything Emacs has read ahead and not used. */
7311 stuff_buffered_input (stuffstring
)
7312 Lisp_Object stuffstring
;
7314 /* stuff_char works only in BSD, versions 4.2 and up. */
7317 register unsigned char *p
;
7319 if (STRINGP (stuffstring
))
7323 p
= XSTRING (stuffstring
)->data
;
7324 count
= XSTRING (stuffstring
)->size
;
7329 /* Anything we have read ahead, put back for the shell to read. */
7330 /* ?? What should this do when we have multiple keyboards??
7331 Should we ignore anything that was typed in at the "wrong" kboard? */
7332 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
7334 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
7335 kbd_fetch_ptr
= kbd_buffer
;
7336 if (kbd_fetch_ptr
->kind
== ascii_keystroke
)
7337 stuff_char (kbd_fetch_ptr
->code
);
7338 kbd_fetch_ptr
->kind
= no_event
;
7339 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_fetch_ptr
7345 #endif /* BSD and not BSD4_1 */
7348 set_waiting_for_input (time_to_clear
)
7349 EMACS_TIME
*time_to_clear
;
7351 input_available_clear_time
= time_to_clear
;
7353 /* Tell interrupt_signal to throw back to read_char, */
7354 waiting_for_input
= 1;
7356 /* If interrupt_signal was called before and buffered a C-g,
7357 make it run again now, to avoid timing error. */
7358 if (!NILP (Vquit_flag
))
7359 quit_throw_to_read_char ();
7362 clear_waiting_for_input ()
7364 /* Tell interrupt_signal not to throw back to read_char, */
7365 waiting_for_input
= 0;
7366 input_available_clear_time
= 0;
7369 /* This routine is called at interrupt level in response to C-G.
7370 If interrupt_input, this is the handler for SIGINT.
7371 Otherwise, it is called from kbd_buffer_store_event,
7372 in handling SIGIO or SIGTINT.
7374 If `waiting_for_input' is non zero, then unless `echoing' is nonzero,
7375 immediately throw back to read_char.
7377 Otherwise it sets the Lisp variable quit-flag not-nil.
7378 This causes eval to throw, when it gets a chance.
7379 If quit-flag is already non-nil, it stops the job right away. */
7382 interrupt_signal (signalnum
) /* If we don't have an argument, */
7383 int signalnum
; /* some compilers complain in signal calls. */
7386 /* Must preserve main program's value of errno. */
7387 int old_errno
= errno
;
7390 if (!read_socket_hook
&& NILP (Vwindow_system
))
7392 /* USG systems forget handlers when they are used;
7393 must reestablish each time */
7394 signal (SIGINT
, interrupt_signal
);
7395 signal (SIGQUIT
, interrupt_signal
);
7401 if (!NILP (Vquit_flag
) && FRAME_TERMCAP_P (selected_frame
))
7406 #ifdef SIGTSTP /* Support possible in later USG versions */
7408 * On systems which can suspend the current process and return to the original
7409 * shell, this command causes the user to end up back at the shell.
7410 * The "Auto-save" and "Abort" questions are not asked until
7411 * the user elects to return to emacs, at which point he can save the current
7412 * job and either dump core or continue.
7417 if (sys_suspend () == -1)
7419 printf ("Not running as a subprocess;\n");
7420 printf ("you can continue or abort.\n");
7423 /* Perhaps should really fork an inferior shell?
7424 But that would not provide any way to get back
7425 to the original shell, ever. */
7426 printf ("No support for stopping a process on this operating system;\n");
7427 printf ("you can continue or abort.\n");
7428 #endif /* not VMS */
7429 #endif /* not SIGTSTP */
7431 /* We must remain inside the screen area when the internal terminal
7432 is used. Note that [Enter] is not echoed by dos. */
7435 /* It doesn't work to autosave while GC is in progress;
7436 the code used for auto-saving doesn't cope with the mark bit. */
7437 if (!gc_in_progress
)
7439 printf ("Auto-save? (y or n) ");
7441 if (((c
= getchar ()) & ~040) == 'Y')
7443 Fdo_auto_save (Qt
, Qnil
);
7445 printf ("\r\nAuto-save done");
7446 #else /* not MSDOS */
7447 printf ("Auto-save done\n");
7448 #endif /* not MSDOS */
7450 while (c
!= '\n') c
= getchar ();
7454 /* During GC, it must be safe to reenable quitting again. */
7455 Vinhibit_quit
= Qnil
;
7458 #endif /* not MSDOS */
7459 printf ("Garbage collection in progress; cannot auto-save now\r\n");
7460 printf ("but will instead do a real quit after garbage collection ends\r\n");
7465 printf ("\r\nAbort? (y or n) ");
7466 #else /* not MSDOS */
7468 printf ("Abort (and enter debugger)? (y or n) ");
7470 printf ("Abort (and dump core)? (y or n) ");
7471 #endif /* not VMS */
7472 #endif /* not MSDOS */
7474 if (((c
= getchar ()) & ~040) == 'Y')
7476 while (c
!= '\n') c
= getchar ();
7478 printf ("\r\nContinuing...\r\n");
7479 #else /* not MSDOS */
7480 printf ("Continuing...\n");
7481 #endif /* not MSDOS */
7487 /* If executing a function that wants to be interrupted out of
7488 and the user has not deferred quitting by binding `inhibit-quit'
7489 then quit right away. */
7490 if (immediate_quit
&& NILP (Vinhibit_quit
))
7494 Fsignal (Qquit
, Qnil
);
7497 /* Else request quit when it's safe */
7501 if (waiting_for_input
&& !echoing
)
7502 quit_throw_to_read_char ();
7507 /* Handle a C-g by making read_char return C-g. */
7509 quit_throw_to_read_char ()
7511 quit_error_check ();
7513 /* Prevent another signal from doing this before we finish. */
7514 clear_waiting_for_input ();
7517 Vunread_command_events
= Qnil
;
7518 unread_command_char
= -1;
7520 #if 0 /* Currently, sit_for is called from read_char without turning
7521 off polling. And that can call set_waiting_for_input.
7522 It seems to be harmless. */
7523 #ifdef POLL_FOR_INPUT
7524 /* May be > 1 if in recursive minibuffer. */
7525 if (poll_suppress_count
== 0)
7530 if (FRAMEP (internal_last_event_frame
)
7531 && XFRAME (internal_last_event_frame
) != selected_frame
)
7532 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
7536 _longjmp (getcjmp
, 1);
7539 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
7540 "Set mode of reading keyboard input.\n\
7541 First arg INTERRUPT non-nil means use input interrupts;\n\
7542 nil means use CBREAK mode.\n\
7543 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\
7544 (no effect except in CBREAK mode).\n\
7545 Third arg META t means accept 8-bit input (for a Meta key).\n\
7546 META nil means ignore the top bit, on the assumption it is parity.\n\
7547 Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\
7548 Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\
7549 See also `current-input-mode'.")
7550 (interrupt
, flow
, meta
, quit
)
7551 Lisp_Object interrupt
, flow
, meta
, quit
;
7554 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
7555 error ("set-input-mode: QUIT must be an ASCII character");
7557 #ifdef POLL_FOR_INPUT
7562 /* this causes startup screen to be restored and messes with the mouse */
7567 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7568 if (read_socket_hook
)
7570 /* When using X, don't give the user a real choice,
7571 because we haven't implemented the mechanisms to support it. */
7572 #ifdef NO_SOCK_SIGIO
7573 interrupt_input
= 0;
7574 #else /* not NO_SOCK_SIGIO */
7575 interrupt_input
= 1;
7576 #endif /* NO_SOCK_SIGIO */
7579 interrupt_input
= !NILP (interrupt
);
7580 #else /* not SIGIO */
7581 interrupt_input
= 0;
7582 #endif /* not SIGIO */
7584 /* Our VMS input only works by interrupts, as of now. */
7586 interrupt_input
= 1;
7589 flow_control
= !NILP (flow
);
7592 else if (EQ (meta
, Qt
))
7597 /* Don't let this value be out of range. */
7598 quit_char
= XINT (quit
) & (meta_key
? 0377 : 0177);
7604 #ifdef POLL_FOR_INPUT
7605 poll_suppress_count
= 1;
7611 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
7612 "Return information about the way Emacs currently reads keyboard input.\n\
7613 The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\
7614 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\
7615 nil, Emacs is using CBREAK mode.\n\
7616 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\
7617 terminal; this does not apply if Emacs uses interrupt-driven input.\n\
7618 META is t if accepting 8-bit input with 8th bit as Meta flag.\n\
7619 META nil means ignoring the top bit, on the assumption it is parity.\n\
7620 META is neither t nor nil if accepting 8-bit input and using\n\
7621 all 8 bits as the character code.\n\
7622 QUIT is the character Emacs currently uses to quit.\n\
7623 The elements of this list correspond to the arguments of\n\
7629 val
[0] = interrupt_input
? Qt
: Qnil
;
7630 val
[1] = flow_control
? Qt
: Qnil
;
7631 val
[2] = meta_key
== 2 ? make_number (0) : meta_key
== 1 ? Qt
: Qnil
;
7632 XSETFASTINT (val
[3], quit_char
);
7634 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
7639 * Set up a new kboard object with reasonable initial values.
7645 kb
->Voverriding_terminal_local_map
= Qnil
;
7646 kb
->Vlast_command
= Qnil
;
7647 kb
->Vprefix_arg
= Qnil
;
7648 kb
->kbd_queue
= Qnil
;
7649 kb
->kbd_queue_has_data
= 0;
7650 kb
->immediate_echo
= 0;
7651 kb
->echoptr
= kb
->echobuf
;
7652 kb
->echo_after_prompt
= -1;
7653 kb
->kbd_macro_buffer
= 0;
7654 kb
->kbd_macro_bufsize
= 0;
7655 kb
->defining_kbd_macro
= Qnil
;
7656 kb
->Vlast_kbd_macro
= Qnil
;
7657 kb
->reference_count
= 0;
7658 kb
->Vsystem_key_alist
= Qnil
;
7659 kb
->system_key_syms
= Qnil
;
7660 kb
->Vdefault_minibuffer_frame
= Qnil
;
7664 * Destroy the contents of a kboard object, but not the object itself.
7665 * We use this just before deleting it, or if we're going to initialize
7672 if (kb
->kbd_macro_buffer
)
7673 xfree (kb
->kbd_macro_buffer
);
7682 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
7685 *kbp
= kb
->next_kboard
;
7693 /* This is correct before outermost invocation of the editor loop */
7694 command_loop_level
= -1;
7696 quit_char
= Ctl ('g');
7697 Vunread_command_events
= Qnil
;
7698 unread_command_char
= -1;
7699 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
7701 recent_keys_index
= 0;
7702 kbd_fetch_ptr
= kbd_buffer
;
7703 kbd_store_ptr
= kbd_buffer
;
7704 kbd_buffer_frame_or_window
7705 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7707 do_mouse_tracking
= Qnil
;
7712 /* This means that command_loop_1 won't try to select anything the first
7714 internal_last_event_frame
= Qnil
;
7715 Vlast_event_frame
= internal_last_event_frame
;
7719 current_kboard
= initial_kboard
;
7721 wipe_kboard (current_kboard
);
7722 init_kboard (current_kboard
);
7725 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7727 kbd_buffer_frame_or_window
7728 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7729 if (!noninteractive
&& !read_socket_hook
&& NILP (Vwindow_system
))
7731 signal (SIGINT
, interrupt_signal
);
7732 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
7733 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
7734 SIGQUIT and we can't tell which one it will give us. */
7735 signal (SIGQUIT
, interrupt_signal
);
7736 #endif /* HAVE_TERMIO */
7738 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7740 if (!noninteractive
)
7741 signal (SIGIO
, input_available_signal
);
7744 /* Use interrupt input by default, if it works and noninterrupt input
7745 has deficiencies. */
7747 #ifdef INTERRUPT_INPUT
7748 interrupt_input
= 1;
7750 interrupt_input
= 0;
7753 /* Our VMS input only works by interrupts, as of now. */
7755 interrupt_input
= 1;
7761 if (keyboard_init_hook
)
7762 (*keyboard_init_hook
) ();
7764 #ifdef POLL_FOR_INPUT
7765 poll_suppress_count
= 1;
7770 /* This type's only use is in syms_of_keyboard, to initialize the
7771 event header symbols and put properties on them. */
7778 struct event_head head_table
[] = {
7779 &Qmouse_movement
, "mouse-movement", &Qmouse_movement
,
7780 &Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
,
7781 &Qswitch_frame
, "switch-frame", &Qswitch_frame
,
7782 &Qdelete_frame
, "delete-frame", &Qdelete_frame
,
7783 &Qiconify_frame
, "iconify-frame", &Qiconify_frame
,
7784 &Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
,
7789 Qdisabled_command_hook
= intern ("disabled-command-hook");
7790 staticpro (&Qdisabled_command_hook
);
7792 Qself_insert_command
= intern ("self-insert-command");
7793 staticpro (&Qself_insert_command
);
7795 Qforward_char
= intern ("forward-char");
7796 staticpro (&Qforward_char
);
7798 Qbackward_char
= intern ("backward-char");
7799 staticpro (&Qbackward_char
);
7801 Qdisabled
= intern ("disabled");
7802 staticpro (&Qdisabled
);
7804 Qundefined
= intern ("undefined");
7805 staticpro (&Qundefined
);
7807 Qpre_command_hook
= intern ("pre-command-hook");
7808 staticpro (&Qpre_command_hook
);
7810 Qpost_command_hook
= intern ("post-command-hook");
7811 staticpro (&Qpost_command_hook
);
7813 Qpost_command_idle_hook
= intern ("post-command-idle-hook");
7814 staticpro (&Qpost_command_idle_hook
);
7816 Qdeferred_action_function
= intern ("deferred-action-function");
7817 staticpro (&Qdeferred_action_function
);
7819 Qcommand_hook_internal
= intern ("command-hook-internal");
7820 staticpro (&Qcommand_hook_internal
);
7822 Qfunction_key
= intern ("function-key");
7823 staticpro (&Qfunction_key
);
7824 Qmouse_click
= intern ("mouse-click");
7825 staticpro (&Qmouse_click
);
7826 Qtimer_event
= intern ("timer-event");
7827 staticpro (&Qtimer_event
);
7829 Qmenu_enable
= intern ("menu-enable");
7830 staticpro (&Qmenu_enable
);
7832 Qmode_line
= intern ("mode-line");
7833 staticpro (&Qmode_line
);
7834 Qvertical_line
= intern ("vertical-line");
7835 staticpro (&Qvertical_line
);
7836 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
7837 staticpro (&Qvertical_scroll_bar
);
7838 Qmenu_bar
= intern ("menu-bar");
7839 staticpro (&Qmenu_bar
);
7841 Qabove_handle
= intern ("above-handle");
7842 staticpro (&Qabove_handle
);
7843 Qhandle
= intern ("handle");
7844 staticpro (&Qhandle
);
7845 Qbelow_handle
= intern ("below-handle");
7846 staticpro (&Qbelow_handle
);
7847 Qup
= intern ("up");
7849 Qdown
= intern ("down");
7852 Qevent_kind
= intern ("event-kind");
7853 staticpro (&Qevent_kind
);
7854 Qevent_symbol_elements
= intern ("event-symbol-elements");
7855 staticpro (&Qevent_symbol_elements
);
7856 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
7857 staticpro (&Qevent_symbol_element_mask
);
7858 Qmodifier_cache
= intern ("modifier-cache");
7859 staticpro (&Qmodifier_cache
);
7861 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
7862 staticpro (&Qrecompute_lucid_menubar
);
7863 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
7864 staticpro (&Qactivate_menubar_hook
);
7866 Qpolling_period
= intern ("polling-period");
7867 staticpro (&Qpolling_period
);
7870 struct event_head
*p
;
7872 for (p
= head_table
;
7873 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
7876 *p
->var
= intern (p
->name
);
7878 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
7879 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
7883 button_down_location
= Fmake_vector (make_number (NUM_MOUSE_BUTTONS
), Qnil
);
7884 staticpro (&button_down_location
);
7888 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
7890 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
7891 for (i
= 0; i
< len
; i
++)
7892 if (modifier_names
[i
])
7893 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
7894 staticpro (&modifier_symbols
);
7897 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
7898 staticpro (&recent_keys
);
7900 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
7901 staticpro (&this_command_keys
);
7903 Qextended_command_history
= intern ("extended-command-history");
7904 Fset (Qextended_command_history
, Qnil
);
7905 staticpro (&Qextended_command_history
);
7907 kbd_buffer_frame_or_window
7908 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7909 staticpro (&kbd_buffer_frame_or_window
);
7911 accent_key_syms
= Qnil
;
7912 staticpro (&accent_key_syms
);
7914 func_key_syms
= Qnil
;
7915 staticpro (&func_key_syms
);
7918 staticpro (&mouse_syms
);
7920 unread_switch_frame
= Qnil
;
7921 staticpro (&unread_switch_frame
);
7923 defsubr (&Sevent_convert_list
);
7924 defsubr (&Sread_key_sequence
);
7925 defsubr (&Srecursive_edit
);
7927 defsubr (&Strack_mouse
);
7929 defsubr (&Sinput_pending_p
);
7930 defsubr (&Scommand_execute
);
7931 defsubr (&Srecent_keys
);
7932 defsubr (&Sthis_command_keys
);
7933 defsubr (&Sthis_single_command_keys
);
7934 defsubr (&Sreset_this_command_lengths
);
7935 defsubr (&Ssuspend_emacs
);
7936 defsubr (&Sabort_recursive_edit
);
7937 defsubr (&Sexit_recursive_edit
);
7938 defsubr (&Srecursion_depth
);
7939 defsubr (&Stop_level
);
7940 defsubr (&Sdiscard_input
);
7941 defsubr (&Sopen_dribble_file
);
7942 defsubr (&Sset_input_mode
);
7943 defsubr (&Scurrent_input_mode
);
7944 defsubr (&Sexecute_extended_command
);
7946 DEFVAR_LISP ("last-command-char", &last_command_char
,
7947 "Last input event that was part of a command.");
7949 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
7950 "Last input event that was part of a command.");
7952 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
7953 "Last input event in a command, except for mouse menu events.\n\
7954 Mouse menus give back keys that don't look like mouse events;\n\
7955 this variable holds the actual mouse event that led to the menu,\n\
7956 so that you can determine whether the command was run by mouse or not.");
7958 DEFVAR_LISP ("last-input-char", &last_input_char
,
7959 "Last input event.");
7961 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
7962 "Last input event.");
7964 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
7965 "List of objects to be read as next command input events.");
7967 DEFVAR_INT ("unread-command-char", &unread_command_char
,
7968 "If not -1, an object to be read as next command input event.");
7970 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
7971 "Meta-prefix character code. Meta-foo as command input\n\
7972 turns into this character followed by foo.");
7973 XSETINT (meta_prefix_char
, 033);
7975 DEFVAR_KBOARD ("last-command", Vlast_command
,
7976 "The last command executed. Normally a symbol with a function definition,\n\
7977 but can be whatever was found in the keymap, or whatever the variable\n\
7978 `this-command' was set to by that command.\n\
7980 The value `mode-exit' is special; it means that the previous command\n\
7981 read an event that told it to exit, and it did so and unread that event.\n\
7982 In other words, the present command is the event that made the previous\n\
7985 The value `kill-region' is special; it means that the previous command\n\
7986 was a kill command.");
7988 DEFVAR_LISP ("this-command", &this_command
,
7989 "The command now being executed.\n\
7990 The command can set this variable; whatever is put here\n\
7991 will be in `last-command' during the following command.");
7992 this_command
= Qnil
;
7994 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
7995 "*Number of keyboard input characters between auto-saves.\n\
7996 Zero means disable autosaving due to number of characters typed.");
7997 auto_save_interval
= 300;
7999 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
8000 "*Number of seconds idle time before auto-save.\n\
8001 Zero or nil means disable auto-saving due to idleness.\n\
8002 After auto-saving due to this many seconds of idle time,\n\
8003 Emacs also does a garbage collection if that seems to be warranted.");
8004 XSETFASTINT (Vauto_save_timeout
, 30);
8006 DEFVAR_INT ("echo-keystrokes", &echo_keystrokes
,
8007 "*Nonzero means echo unfinished commands after this many seconds of pause.");
8008 echo_keystrokes
= 1;
8010 DEFVAR_INT ("polling-period", &polling_period
,
8011 "*Interval between polling for input during Lisp execution.\n\
8012 The reason for polling is to make C-g work to stop a running program.\n\
8013 Polling is needed only when using X windows and SIGIO does not work.\n\
8014 Polling is automatically disabled in all other cases.");
8017 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
8018 "*Maximum time between mouse clicks to make a double-click.\n\
8019 Measured in milliseconds. nil means disable double-click recognition;\n\
8020 t means double-clicks have no time limit and are detected\n\
8021 by position only.");
8022 Vdouble_click_time
= make_number (500);
8024 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
8025 "*Non-nil means inhibit local map menu bar menus.");
8026 inhibit_local_menu_bar_menus
= 0;
8028 DEFVAR_INT ("num-input-keys", &num_input_keys
,
8029 "Number of complete keys read from the keyboard so far.");
8032 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
8033 "The frame in which the most recently read event occurred.\n\
8034 If the last event came from a keyboard macro, this is set to `macro'.");
8035 Vlast_event_frame
= Qnil
;
8037 DEFVAR_LISP ("help-char", &Vhelp_char
,
8038 "Character to recognize as meaning Help.\n\
8039 When it is read, do `(eval help-form)', and display result if it's a string.\n\
8040 If the value of `help-form' is nil, this char can be read normally.");
8041 XSETINT (Vhelp_char
, Ctl ('H'));
8043 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
8044 "List of input events to recognize as meaning Help.\n\
8045 These work just like the value of `help-char' (see that).");
8046 Vhelp_event_list
= Qnil
;
8048 DEFVAR_LISP ("help-form", &Vhelp_form
,
8049 "Form to execute when character `help-char' is read.\n\
8050 If the form returns a string, that string is displayed.\n\
8051 If `help-form' is nil, the help char is not recognized.");
8054 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
8055 "Command to run when `help-char' character follows a prefix key.\n\
8056 This command is used only when there is no actual binding\n\
8057 for that character after that prefix key.");
8058 Vprefix_help_command
= Qnil
;
8060 DEFVAR_LISP ("top-level", &Vtop_level
,
8061 "Form to evaluate when Emacs starts up.\n\
8062 Useful to set before you dump a modified Emacs.");
8065 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
8066 "Translate table for keyboard input, or nil.\n\
8067 Each character is looked up in this string and the contents used instead.\n\
8068 The value may be a string, a vector, or a char-table.\n\
8069 If it is a string or vector of length N,\n\
8070 character codes N and up are untranslated.\n\
8071 In a vector or a char-table, an element which is nil means \"no translation\".");
8072 Vkeyboard_translate_table
= Qnil
;
8074 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
8075 "Non-nil means to always spawn a subshell instead of suspending,\n\
8076 even if the operating system has support for stopping a process.");
8079 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
8080 "Non-nil means prompt with menus when appropriate.\n\
8081 This is done when reading from a keymap that has a prompt string,\n\
8082 for elements that have prompt strings.\n\
8083 The menu is displayed on the screen\n\
8084 if X menus were enabled at configuration\n\
8085 time and the previous event was a mouse click prefix key.\n\
8086 Otherwise, menu prompting uses the echo area.");
8089 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
8090 "Character to see next line of menu prompt.\n\
8091 Type this character while in a menu prompt to rotate around the lines of it.");
8092 XSETINT (menu_prompt_more_char
, ' ');
8094 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
8095 "A mask of additional modifier keys to use with every keyboard character.\n\
8096 Emacs applies the modifiers of the character stored here to each keyboard\n\
8097 character it reads. For example, after evaluating the expression\n\
8098 (setq extra-keyboard-modifiers ?\\C-x)\n\
8099 all input characters will have the control modifier applied to them.\n\
8101 Note that the character ?\\C-@, equivalent to the integer zero, does\n\
8102 not count as a control character; rather, it counts as a character\n\
8103 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\
8104 cancels any modification.");
8105 extra_keyboard_modifiers
= 0;
8107 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
8108 "If an editing command sets this to t, deactivate the mark afterward.\n\
8109 The command loop sets this to nil before each command,\n\
8110 and tests the value when the command returns.\n\
8111 Buffer modification stores t in this variable.");
8112 Vdeactivate_mark
= Qnil
;
8114 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
8115 "Temporary storage of pre-command-hook or post-command-hook.");
8116 Vcommand_hook_internal
= Qnil
;
8118 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
8119 "Normal hook run before each command is executed.\n\
8120 Errors running the hook are caught and ignored.");
8121 Vpre_command_hook
= Qnil
;
8123 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
8124 "Normal hook run after each command is executed.\n\
8125 Errors running the hook are caught and ignored.");
8126 Vpost_command_hook
= Qnil
;
8128 DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook
,
8129 "Normal hook run after each command is executed, if idle.\n\
8130 Errors running the hook are caught and ignored.\n\
8131 This feature is obsolete; use idle timers instead. See `etc/NEWS'.");
8132 Vpost_command_idle_hook
= Qnil
;
8134 DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay
,
8135 "Delay time before running `post-command-idle-hook'.\n\
8136 This is measured in microseconds.");
8137 post_command_idle_delay
= 100000;
8139 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
8140 "t means menu bar, specified Lucid style, needs to be recomputed.");
8141 Vlucid_menu_bar_dirty_flag
= Qnil
;
8143 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
8144 "List of menu bar items to move to the end of the menu bar.\n\
8145 The elements of the list are event types that may have menu bar bindings.");
8146 Vmenu_bar_final_items
= Qnil
;
8148 DEFVAR_KBOARD ("overriding-terminal-local-map",
8149 Voverriding_terminal_local_map
,
8150 "Keymap that overrides all other local keymaps.\n\
8151 If this variable is non-nil, it is used as a keymap instead of the\n\
8152 buffer's local map, and the minor mode keymaps and text property keymaps.");
8154 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
8155 "Keymap that overrides all other local keymaps.\n\
8156 If this variable is non-nil, it is used as a keymap instead of the\n\
8157 buffer's local map, and the minor mode keymaps and text property keymaps.");
8158 Voverriding_local_map
= Qnil
;
8160 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
8161 "Non-nil means `overriding-local-map' applies to the menu bar.\n\
8162 Otherwise, the menu bar continues to reflect the buffer's local map\n\
8163 and the minor mode maps regardless of `overriding-local-map'.");
8164 Voverriding_local_map_menu_flag
= Qnil
;
8166 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
8167 "Keymap defining bindings for special events to execute at low level.");
8168 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
8170 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
8171 "*Non-nil means generate motion events for mouse motion.");
8173 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
8174 "Alist of system-specific X windows key symbols.\n\
8175 Each element should have the form (N . SYMBOL) where N is the\n\
8176 numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\
8177 and SYMBOL is its name.");
8179 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
8180 "List of deferred actions to be performed at a later time.\n\
8181 The precise format isn't relevant here; we just check whether it is nil.");
8182 Vdeferred_action_list
= Qnil
;
8184 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
8185 "Function to call to handle deferred actions, after each command.\n\
8186 This function is called with no arguments after each command\n\
8187 whenever `deferred-action-list' is non-nil.");
8188 Vdeferred_action_function
= Qnil
;
8190 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
8191 "Non-nil means show the equivalent key-binding when M-x command has one.\n\
8192 The value can be a length of time to show the message for.\n\
8193 If the value is non-nil and not a number, we wait 2 seconds.");
8194 Vsuggest_key_bindings
= Qt
;
8196 DEFVAR_LISP ("timer-list", &Vtimer_list
,
8197 "List of active absolute time timers in order of increasing time");
8200 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
8201 "List of active idle-time timers in order of increasing time");
8202 Vtimer_idle_list
= Qnil
;
8207 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
8208 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
8209 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
8210 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
8211 initial_define_key (meta_map
, 'x', "execute-extended-command");
8213 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
8214 "handle-delete-frame");
8215 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
8217 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",