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
;
296 /* The frame in which the last input event occurred, or Qmacro if the
297 last event came from a macro. We use this to determine when to
298 generate switch-frame events. This may be cleared by functions
299 like Fselect_frame, to make sure that a switch-frame event is
300 generated by the next character. */
301 Lisp_Object internal_last_event_frame
;
303 /* A user-visible version of the above, intended to allow users to
304 figure out where the last event came from, if the event doesn't
305 carry that information itself (i.e. if it was a character). */
306 Lisp_Object Vlast_event_frame
;
308 /* The timestamp of the last input event we received from the X server.
309 X Windows wants this for selection ownership. */
310 unsigned long last_event_timestamp
;
312 Lisp_Object Qself_insert_command
;
313 Lisp_Object Qforward_char
;
314 Lisp_Object Qbackward_char
;
315 Lisp_Object Qundefined
;
317 /* read_key_sequence stores here the command definition of the
318 key sequence that it reads. */
319 Lisp_Object read_key_sequence_cmd
;
321 /* Form to evaluate (if non-nil) when Emacs is started. */
322 Lisp_Object Vtop_level
;
324 /* User-supplied string to translate input characters through. */
325 Lisp_Object Vkeyboard_translate_table
;
327 /* Keymap mapping ASCII function key sequences onto their preferred forms. */
328 extern Lisp_Object Vfunction_key_map
;
330 /* Another keymap that maps key sequences into key sequences.
331 This one takes precedence over ordinary definitions. */
332 extern Lisp_Object Vkey_translation_map
;
334 /* Non-nil means deactivate the mark at end of this command. */
335 Lisp_Object Vdeactivate_mark
;
337 /* Menu bar specified in Lucid Emacs fashion. */
339 Lisp_Object Vlucid_menu_bar_dirty_flag
;
340 Lisp_Object Qrecompute_lucid_menubar
, Qactivate_menubar_hook
;
342 /* Hooks to run before and after each command. */
343 Lisp_Object Qpre_command_hook
, Vpre_command_hook
;
344 Lisp_Object Qpost_command_hook
, Vpost_command_hook
;
345 Lisp_Object Qcommand_hook_internal
, Vcommand_hook_internal
;
346 /* Hook run after a command if there's no more input soon. */
347 Lisp_Object Qpost_command_idle_hook
, Vpost_command_idle_hook
;
349 /* Delay time in microseconds before running post-command-idle-hook. */
350 int post_command_idle_delay
;
352 /* List of deferred actions to be performed at a later time.
353 The precise format isn't relevant here; we just check whether it is nil. */
354 Lisp_Object Vdeferred_action_list
;
356 /* Function to call to handle deferred actions, when there are any. */
357 Lisp_Object Vdeferred_action_function
;
358 Lisp_Object Qdeferred_action_function
;
360 /* File in which we write all commands we read. */
363 /* Nonzero if input is available. */
366 /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
367 keep 0200 bit in input chars. 0 to ignore the 0200 bit. */
371 extern char *pending_malloc_warning
;
373 /* Circular buffer for pre-read keyboard input. */
374 static struct input_event kbd_buffer
[KBD_BUFFER_SIZE
];
376 /* Vector to GCPRO the frames and windows mentioned in kbd_buffer.
378 The interrupt-level event handlers will never enqueue an event on a
379 frame which is not in Vframe_list, and once an event is dequeued,
380 internal_last_event_frame or the event itself points to the frame.
383 But while the event is sitting in the queue, it's completely
384 unprotected. Suppose the user types one command which will run for
385 a while and then delete a frame, and then types another event at
386 the frame that will be deleted, before the command gets around to
387 it. Suppose there are no references to this frame elsewhere in
388 Emacs, and a GC occurs before the second event is dequeued. Now we
389 have an event referring to a freed frame, which will crash Emacs
392 Similar things happen when an event on a scroll bar is enqueued; the
393 window may be deleted while the event is in the queue.
395 So, we use this vector to protect the frame_or_window field in the
396 event queue. That way, they'll be dequeued as dead frames or
397 windows, but still valid lisp objects.
399 If kbd_buffer[i].kind != no_event, then
400 (XVECTOR (kbd_buffer_frame_or_window)->contents[i]
401 == kbd_buffer[i].frame_or_window. */
402 static Lisp_Object kbd_buffer_frame_or_window
;
404 /* Pointer to next available character in kbd_buffer.
405 If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
406 This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the
407 next available char is in kbd_buffer[0]. */
408 static struct input_event
*kbd_fetch_ptr
;
410 /* Pointer to next place to store character in kbd_buffer. This
411 may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
412 character should go in kbd_buffer[0]. */
413 static volatile struct input_event
*kbd_store_ptr
;
415 /* The above pair of variables forms a "queue empty" flag. When we
416 enqueue a non-hook event, we increment kbd_store_ptr. When we
417 dequeue a non-hook event, we increment kbd_fetch_ptr. We say that
418 there is input available iff the two pointers are not equal.
420 Why not just have a flag set and cleared by the enqueuing and
421 dequeuing functions? Such a flag could be screwed up by interrupts
422 at inopportune times. */
424 /* If this flag is non-nil, we check mouse_moved to see when the
425 mouse moves, and motion events will appear in the input stream.
426 Otherwise, mouse motion is ignored. */
427 static Lisp_Object do_mouse_tracking
;
429 /* Symbols to head events. */
430 Lisp_Object Qmouse_movement
;
431 Lisp_Object Qscroll_bar_movement
;
432 Lisp_Object Qswitch_frame
;
433 Lisp_Object Qdelete_frame
;
434 Lisp_Object Qiconify_frame
;
435 Lisp_Object Qmake_frame_visible
;
437 /* Symbols to denote kinds of events. */
438 Lisp_Object Qfunction_key
;
439 Lisp_Object Qmouse_click
;
440 Lisp_Object Qtimer_event
;
441 /* Lisp_Object Qmouse_movement; - also an event header */
443 /* Properties of event headers. */
444 Lisp_Object Qevent_kind
;
445 Lisp_Object Qevent_symbol_elements
;
447 Lisp_Object Qmenu_enable
;
449 /* An event header symbol HEAD may have a property named
450 Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
451 BASE is the base, unmodified version of HEAD, and MODIFIERS is the
452 mask of modifiers applied to it. If present, this is used to help
453 speed up parse_modifiers. */
454 Lisp_Object Qevent_symbol_element_mask
;
456 /* An unmodified event header BASE may have a property named
457 Qmodifier_cache, which is an alist mapping modifier masks onto
458 modified versions of BASE. If present, this helps speed up
460 Lisp_Object Qmodifier_cache
;
462 /* Symbols to use for parts of windows. */
463 Lisp_Object Qmode_line
;
464 Lisp_Object Qvertical_line
;
465 Lisp_Object Qvertical_scroll_bar
;
466 Lisp_Object Qmenu_bar
;
468 extern Lisp_Object Qmenu_enable
;
470 Lisp_Object
recursive_edit_unwind (), command_loop ();
471 Lisp_Object
Fthis_command_keys ();
472 Lisp_Object Qextended_command_history
;
473 EMACS_TIME
timer_check ();
475 extern char *x_get_keysym_name ();
477 Lisp_Object Qpolling_period
;
479 /* List of absolute timers. Appears in order of next scheduled event. */
480 Lisp_Object Vtimer_list
;
482 /* List of idle time timers. Appears in order of next scheduled event. */
483 Lisp_Object Vtimer_idle_list
;
485 /* Incremented whenever a timer is run. */
488 extern Lisp_Object Vprint_level
, Vprint_length
;
490 /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt
492 EMACS_TIME
*input_available_clear_time
;
494 /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode.
495 Default is 1 if INTERRUPT_INPUT is defined. */
498 /* Nonzero while interrupts are temporarily deferred during redisplay. */
499 int interrupts_deferred
;
501 /* Nonzero means use ^S/^Q for flow control. */
504 /* Allow m- file to inhibit use of FIONREAD. */
505 #ifdef BROKEN_FIONREAD
509 /* We are unable to use interrupts if FIONREAD is not available,
510 so flush SIGIO so we won't try. */
517 /* If we support a window system, turn on the code to poll periodically
518 to detect C-g. It isn't actually used when doing interrupt input. */
519 #ifdef HAVE_WINDOW_SYSTEM
520 #define POLL_FOR_INPUT
523 /* Global variable declarations. */
525 /* Function for init_keyboard to call with no args (if nonzero). */
526 void (*keyboard_init_hook
) ();
528 static int read_avail_input ();
529 static void get_input_pending ();
530 static int readable_events ();
531 static Lisp_Object
read_char_x_menu_prompt ();
532 static Lisp_Object
read_char_minibuf_menu_prompt ();
533 static Lisp_Object
make_lispy_event ();
535 static Lisp_Object
make_lispy_movement ();
537 static Lisp_Object
modify_event_symbol ();
538 static Lisp_Object
make_lispy_switch_frame ();
539 static int parse_solitary_modifier ();
541 /* > 0 if we are to echo keystrokes. */
542 static int echo_keystrokes
;
544 /* Nonzero means don't try to suspend even if the operating system seems
546 static int cannot_suspend
;
548 #define min(a,b) ((a)<(b)?(a):(b))
549 #define max(a,b) ((a)>(b)?(a):(b))
551 /* Install the string STR as the beginning of the string of echoing,
552 so that it serves as a prompt for the next character.
553 Also start echoing. */
558 int len
= strlen (str
);
560 if (len
> ECHOBUFSIZE
- 4)
561 len
= ECHOBUFSIZE
- 4;
562 bcopy (str
, current_kboard
->echobuf
, len
);
563 current_kboard
->echoptr
= current_kboard
->echobuf
+ len
;
564 *current_kboard
->echoptr
= '\0';
566 current_kboard
->echo_after_prompt
= len
;
571 /* Add C to the echo string, if echoing is going on.
572 C can be a character, which is printed prettily ("M-C-x" and all that
573 jazz), or a symbol, whose name is printed. */
578 extern char *push_key_description ();
580 if (current_kboard
->immediate_echo
)
582 char *ptr
= current_kboard
->echoptr
;
584 if (ptr
!= current_kboard
->echobuf
)
587 /* If someone has passed us a composite event, use its head symbol. */
592 if (ptr
- current_kboard
->echobuf
> ECHOBUFSIZE
- 6)
595 ptr
= push_key_description (XINT (c
), ptr
);
597 else if (SYMBOLP (c
))
599 struct Lisp_String
*name
= XSYMBOL (c
)->name
;
600 if ((ptr
- current_kboard
->echobuf
) + name
->size
+ 4 > ECHOBUFSIZE
)
602 bcopy (name
->data
, ptr
, name
->size
);
606 if (current_kboard
->echoptr
== current_kboard
->echobuf
609 strcpy (ptr
, " (Type ? for further options)");
614 current_kboard
->echoptr
= ptr
;
620 /* Temporarily add a dash to the end of the echo string if it's not
621 empty, so that it serves as a mini-prompt for the very next character. */
625 if (!current_kboard
->immediate_echo
626 && current_kboard
->echoptr
== current_kboard
->echobuf
)
628 /* Do nothing if we just printed a prompt. */
629 if (current_kboard
->echo_after_prompt
630 == current_kboard
->echoptr
- current_kboard
->echobuf
)
632 /* Do nothing if not echoing at all. */
633 if (current_kboard
->echoptr
== 0)
636 /* Put a dash at the end of the buffer temporarily,
637 but make it go away when the next character is added. */
638 current_kboard
->echoptr
[0] = '-';
639 current_kboard
->echoptr
[1] = 0;
644 /* Display the current echo string, and begin echoing if not already
649 if (!current_kboard
->immediate_echo
)
652 current_kboard
->immediate_echo
= 1;
654 for (i
= 0; i
< this_command_key_count
; i
++)
657 c
= XVECTOR (this_command_keys
)->contents
[i
];
658 if (! (EVENT_HAS_PARAMETERS (c
)
659 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
666 message1_nolog (current_kboard
->echobuf
);
669 if (waiting_for_input
&& !NILP (Vquit_flag
))
670 quit_throw_to_read_char ();
673 /* Turn off echoing, for the start of a new command. */
677 current_kboard
->immediate_echo
= 0;
678 current_kboard
->echoptr
= current_kboard
->echobuf
;
679 current_kboard
->echo_after_prompt
= -1;
680 ok_to_echo_at_next_pause
= 0;
683 /* Return the length of the current echo string. */
688 return current_kboard
->echoptr
- current_kboard
->echobuf
;
691 /* Truncate the current echo message to its first LEN chars.
692 This and echo_char get used by read_key_sequence when the user
693 switches frames while entering a key sequence. */
699 current_kboard
->echobuf
[len
] = '\0';
700 current_kboard
->echoptr
= current_kboard
->echobuf
+ len
;
701 truncate_echo_area (len
);
705 /* Functions for manipulating this_command_keys. */
707 add_command_key (key
)
710 int size
= XVECTOR (this_command_keys
)->size
;
712 /* If reset-this-command-length was called recently, obey it now.
713 See the doc string of that function for an explanation of why. */
714 if (before_command_restore_flag
)
716 this_command_key_count
= before_command_key_count_1
;
717 if (this_command_key_count
< this_single_command_key_start
)
718 this_single_command_key_start
= this_command_key_count
;
719 echo_truncate (before_command_echo_length_1
);
720 before_command_restore_flag
= 0;
723 if (this_command_key_count
>= size
)
725 Lisp_Object new_keys
;
727 new_keys
= Fmake_vector (make_number (size
* 2), Qnil
);
728 bcopy (XVECTOR (this_command_keys
)->contents
,
729 XVECTOR (new_keys
)->contents
,
730 size
* sizeof (Lisp_Object
));
732 this_command_keys
= new_keys
;
735 XVECTOR (this_command_keys
)->contents
[this_command_key_count
++] = key
;
741 int count
= specpdl_ptr
- specpdl
;
744 if (command_loop_level
> 0)
746 specbind (Qstandard_output
, Qt
);
747 specbind (Qstandard_input
, Qt
);
750 val
= command_loop ();
752 Fsignal (Qquit
, Qnil
);
754 return unbind_to (count
, Qnil
);
757 /* When an auto-save happens, record the "time", and don't do again soon. */
761 last_auto_save
= num_nonmacro_input_chars
;
764 /* Make an auto save happen as soon as possible at command level. */
766 force_auto_save_soon ()
768 last_auto_save
= - auto_save_interval
- 1;
770 record_asynch_buffer_change ();
773 DEFUN ("recursive-edit", Frecursive_edit
, Srecursive_edit
, 0, 0, "",
774 "Invoke the editor command loop recursively.\n\
775 To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\
776 that tells this function to return.\n\
777 Alternately, `(throw 'exit t)' makes this function signal an error.\n\
778 This function is called by the editor initialization to begin editing.")
781 int count
= specpdl_ptr
- specpdl
;
784 command_loop_level
++;
785 update_mode_lines
= 1;
787 record_unwind_protect (recursive_edit_unwind
,
789 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
793 return unbind_to (count
, Qnil
);
797 recursive_edit_unwind (buffer
)
801 Fset_buffer (buffer
);
803 command_loop_level
--;
804 update_mode_lines
= 1;
812 #if 0 /* Theory: if there's anything in Vunread_command_events,
813 it will right away be read by read_key_sequence,
814 and then if we do switch KBOARDS, it will go into the side
815 queue then. So we don't need to do anything special here -- rms. */
816 if (CONSP (Vunread_command_events
))
818 current_kboard
->kbd_queue
819 = nconc2 (Vunread_command_events
, current_kboard
->kbd_queue
);
820 current_kboard
->kbd_queue_has_data
= 1;
822 Vunread_command_events
= Qnil
;
828 /* Switch to the single-kboard state, making current_kboard
829 the only KBOARD from which further input is accepted. */
832 single_kboard_state ()
839 /* Maintain a stack of kboards, so other parts of Emacs
840 can switch temporarily to the kboard of a given frame
841 and then revert to the previous status. */
846 struct kboard_stack
*next
;
849 static struct kboard_stack
*kboard_stack
;
852 push_frame_kboard (f
)
856 struct kboard_stack
*p
857 = (struct kboard_stack
*) xmalloc (sizeof (struct kboard_stack
));
859 p
->next
= kboard_stack
;
860 p
->kboard
= current_kboard
;
863 current_kboard
= FRAME_KBOARD (f
);
871 struct kboard_stack
*p
= kboard_stack
;
872 current_kboard
= p
->kboard
;
873 kboard_stack
= p
->next
;
878 /* Handle errors that are not handled at inner levels
879 by printing an error message and returning to the editor command loop. */
885 Lisp_Object old_level
, old_length
;
888 if (!NILP (executing_macro
))
890 if (executing_macro_iterations
== 1)
891 sprintf (macroerror
, "After 1 kbd macro iteration: ");
893 sprintf (macroerror
, "After %d kbd macro iterations: ",
894 executing_macro_iterations
);
899 Vstandard_output
= Qt
;
900 Vstandard_input
= Qt
;
901 Vexecuting_macro
= Qnil
;
902 executing_macro
= Qnil
;
903 current_kboard
->Vprefix_arg
= Qnil
;
906 /* Avoid unquittable loop if data contains a circular list. */
907 old_level
= Vprint_level
;
908 old_length
= Vprint_length
;
909 XSETFASTINT (Vprint_level
, 10);
910 XSETFASTINT (Vprint_length
, 10);
911 cmd_error_internal (data
, macroerror
);
912 Vprint_level
= old_level
;
913 Vprint_length
= old_length
;
917 Vinhibit_quit
= Qnil
;
922 return make_number (0);
925 cmd_error_internal (data
, context
)
933 echo_area_glyphs
= 0;
935 /* If the window system or terminal frame hasn't been initialized
936 yet, or we're not interactive, it's best to dump this message out
937 to stderr and exit. */
938 if (! FRAME_MESSAGE_BUF (selected_frame
)
940 stream
= Qexternal_debugging_output
;
949 write_string_1 (context
, -1, stream
);
951 print_error_message (data
, stream
);
953 /* If the window system or terminal frame hasn't been initialized
954 yet, or we're in -batch mode, this error should cause Emacs to exit. */
955 if (! FRAME_MESSAGE_BUF (selected_frame
)
959 Fkill_emacs (make_number (-1));
963 Lisp_Object
command_loop_1 ();
964 Lisp_Object
command_loop_2 ();
965 Lisp_Object
top_level_1 ();
967 /* Entry to editor-command-loop.
968 This level has the catches for exiting/returning to editor command loop.
969 It returns nil to exit recursive edit, t to abort it. */
974 if (command_loop_level
> 0 || minibuf_level
> 0)
976 return internal_catch (Qexit
, command_loop_2
, Qnil
);
981 internal_catch (Qtop_level
, top_level_1
, Qnil
);
982 internal_catch (Qtop_level
, command_loop_2
, Qnil
);
984 /* End of file in -batch run causes exit here. */
990 /* Here we catch errors in execution of commands within the
991 editing loop, and reenter the editing loop.
992 When there is an error, cmd_error runs and returns a non-nil
993 value to us. A value of nil means that cmd_loop_1 itself
994 returned due to end of file (or end of kbd macro). */
999 register Lisp_Object val
;
1002 val
= internal_condition_case (command_loop_1
, Qerror
, cmd_error
);
1003 while (!NILP (val
));
1011 return Feval (Vtop_level
);
1017 /* On entry to the outer level, run the startup file */
1018 if (!NILP (Vtop_level
))
1019 internal_condition_case (top_level_2
, Qerror
, cmd_error
);
1020 else if (!NILP (Vpurify_flag
))
1021 message ("Bare impure Emacs (standard Lisp code not loaded)");
1023 message ("Bare Emacs (standard Lisp code not loaded)");
1027 DEFUN ("top-level", Ftop_level
, Stop_level
, 0, 0, "",
1028 "Exit all recursive editing levels.")
1031 Fthrow (Qtop_level
, Qnil
);
1034 DEFUN ("exit-recursive-edit", Fexit_recursive_edit
, Sexit_recursive_edit
, 0, 0, "",
1035 "Exit from the innermost recursive edit or minibuffer.")
1038 if (command_loop_level
> 0 || minibuf_level
> 0)
1039 Fthrow (Qexit
, Qnil
);
1041 error ("No recursive edit is in progress");
1044 DEFUN ("abort-recursive-edit", Fabort_recursive_edit
, Sabort_recursive_edit
, 0, 0, "",
1045 "Abort the command that requested this recursive edit or minibuffer input.")
1048 if (command_loop_level
> 0 || minibuf_level
> 0)
1051 error ("No recursive edit is in progress");
1054 /* This is the actual command reading loop,
1055 sans error-handling encapsulation. */
1057 Lisp_Object
Fcommand_execute ();
1058 static int read_key_sequence ();
1059 void safe_run_hooks ();
1064 Lisp_Object cmd
, tem
;
1067 Lisp_Object keybuf
[30];
1072 struct buffer
*prev_buffer
;
1074 int was_locked
= single_kboard
;
1077 current_kboard
->Vprefix_arg
= Qnil
;
1078 Vdeactivate_mark
= Qnil
;
1079 waiting_for_input
= 0;
1084 this_command_key_count
= 0;
1085 this_single_command_key_start
= 0;
1087 /* Make sure this hook runs after commands that get errors and
1088 throw to top level. */
1089 /* Note that the value cell will never directly contain nil
1090 if the symbol is a local variable. */
1091 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1092 safe_run_hooks (Qpost_command_hook
);
1094 if (!NILP (Vdeferred_action_list
))
1095 call0 (Vdeferred_action_function
);
1097 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1099 if (NILP (Vunread_command_events
)
1100 && NILP (Vexecuting_macro
)
1101 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1)))
1102 safe_run_hooks (Qpost_command_idle_hook
);
1105 /* Do this after running Vpost_command_hook, for consistency. */
1106 current_kboard
->Vlast_command
= this_command
;
1110 /* Make sure the current window's buffer is selected. */
1111 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1112 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1114 /* Display any malloc warning that just came out. Use while because
1115 displaying one warning can cause another. */
1117 while (pending_malloc_warning
)
1118 display_malloc_warning ();
1122 Vdeactivate_mark
= Qnil
;
1124 /* If minibuffer on and echo area in use,
1125 wait 2 sec and redraw minibuffer. */
1127 if (minibuf_level
&& echo_area_glyphs
1128 && EQ (minibuf_window
, echo_area_window
))
1130 /* Bind inhibit-quit to t so that C-g gets read in
1131 rather than quitting back to the minibuffer. */
1132 int count
= specpdl_ptr
- specpdl
;
1133 specbind (Qinhibit_quit
, Qt
);
1135 Fsit_for (make_number (2), Qnil
, Qnil
);
1136 /* Clear the echo area. */
1139 unbind_to (count
, Qnil
);
1141 /* If a C-g came in before, treat it as input now. */
1142 if (!NILP (Vquit_flag
))
1145 Vunread_command_events
= Fcons (make_number (quit_char
), Qnil
);
1150 alloca (0); /* Cause a garbage collection now */
1151 /* Since we can free the most stuff here. */
1152 #endif /* C_ALLOCA */
1155 /* Select the frame that the last event came from. Usually,
1156 switch-frame events will take care of this, but if some lisp
1157 code swallows a switch-frame event, we'll fix things up here.
1158 Is this a good idea? */
1159 if (FRAMEP (internal_last_event_frame
)
1160 && XFRAME (internal_last_event_frame
) != selected_frame
)
1161 Fselect_frame (internal_last_event_frame
, Qnil
);
1163 /* If it has changed current-menubar from previous value,
1164 really recompute the menubar from the value. */
1165 if (! NILP (Vlucid_menu_bar_dirty_flag
)
1166 && !NILP (Ffboundp (Qrecompute_lucid_menubar
)))
1167 call0 (Qrecompute_lucid_menubar
);
1169 before_command_key_count
= this_command_key_count
;
1170 before_command_echo_length
= echo_length ();
1172 this_command
= Qnil
;
1174 /* Read next key sequence; i gets its length. */
1175 i
= read_key_sequence (keybuf
, sizeof keybuf
/ sizeof keybuf
[0],
1180 /* Now we have read a key sequence of length I,
1181 or else I is 0 and we found end of file. */
1183 if (i
== 0) /* End of file -- happens only in */
1184 return Qnil
; /* a kbd macro, at the end. */
1185 /* -1 means read_key_sequence got a menu that was rejected.
1186 Just loop around and read another command. */
1190 this_command_key_count
= 0;
1191 this_single_command_key_start
= 0;
1195 last_command_char
= keybuf
[i
- 1];
1197 /* If the previous command tried to force a specific window-start,
1198 forget about that, in case this command moves point far away
1199 from that position. But also throw away beg_unchanged and
1200 end_unchanged information in that case, so that redisplay will
1201 update the whole window properly. */
1202 if (!NILP (XWINDOW (selected_window
)->force_start
))
1204 XWINDOW (selected_window
)->force_start
= Qnil
;
1205 beg_unchanged
= end_unchanged
= 0;
1208 cmd
= read_key_sequence_cmd
;
1209 if (!NILP (Vexecuting_macro
))
1211 if (!NILP (Vquit_flag
))
1213 Vexecuting_macro
= Qt
;
1214 QUIT
; /* Make some noise. */
1215 /* Will return since macro now empty. */
1219 /* Do redisplay processing after this command except in special
1220 cases identified below that set no_redisplay to 1.
1221 (actually, there's currently no way to prevent the redisplay,
1222 and no_redisplay is ignored.
1223 Perhaps someday we will really implement it.) */
1226 prev_buffer
= current_buffer
;
1227 prev_modiff
= MODIFF
;
1228 last_point_position
= PT
;
1229 XSETBUFFER (last_point_position_buffer
, prev_buffer
);
1231 /* Execute the command. */
1234 /* Note that the value cell will never directly contain nil
1235 if the symbol is a local variable. */
1236 if (!NILP (Vpre_command_hook
) && !NILP (Vrun_hooks
))
1237 safe_run_hooks (Qpre_command_hook
);
1239 if (NILP (this_command
))
1241 /* nil means key is undefined. */
1243 current_kboard
->defining_kbd_macro
= Qnil
;
1244 update_mode_lines
= 1;
1245 current_kboard
->Vprefix_arg
= Qnil
;
1249 if (NILP (current_kboard
->Vprefix_arg
) && ! no_direct
)
1251 /* Recognize some common commands in common situations and
1252 do them directly. */
1253 if (EQ (this_command
, Qforward_char
) && PT
< ZV
)
1255 struct Lisp_Char_Table
*dp
1256 = window_display_table (XWINDOW (selected_window
));
1257 lose
= FETCH_CHAR (PT
);
1260 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1261 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1262 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1263 && (lose
>= 0x20 && lose
< 0x7f)))
1264 : (lose
>= 0x20 && lose
< 0x7f))
1265 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1267 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1269 && !windows_or_buffers_changed
1270 && EQ (current_buffer
->selective_display
, Qnil
)
1271 && !detect_input_pending ()
1272 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1273 && NILP (Vexecuting_macro
))
1274 no_redisplay
= direct_output_forward_char (1);
1277 else if (EQ (this_command
, Qbackward_char
) && PT
> BEGV
)
1279 struct Lisp_Char_Table
*dp
1280 = window_display_table (XWINDOW (selected_window
));
1282 lose
= FETCH_CHAR (PT
);
1284 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1285 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1286 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1287 && (lose
>= 0x20 && lose
< 0x7f)))
1288 : (lose
>= 0x20 && lose
< 0x7f))
1289 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1291 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1293 && !windows_or_buffers_changed
1294 && EQ (current_buffer
->selective_display
, Qnil
)
1295 && !detect_input_pending ()
1296 && NILP (XWINDOW (selected_window
)->column_number_displayed
)
1297 && NILP (Vexecuting_macro
))
1298 no_redisplay
= direct_output_forward_char (-1);
1301 else if (EQ (this_command
, Qself_insert_command
)
1302 /* Try this optimization only on ascii keystrokes. */
1303 && INTEGERP (last_command_char
))
1305 unsigned char c
= XINT (last_command_char
);
1308 if (NILP (Vexecuting_macro
)
1309 && !EQ (minibuf_window
, selected_window
))
1311 if (!nonundocount
|| nonundocount
>= 20)
1318 lose
= ((XFASTINT (XWINDOW (selected_window
)->last_modified
)
1320 || (XFASTINT (XWINDOW (selected_window
)->last_point
)
1322 || MODIFF
<= SAVE_MODIFF
1323 || windows_or_buffers_changed
1324 || !EQ (current_buffer
->selective_display
, Qnil
)
1325 || detect_input_pending ()
1326 || !NILP (XWINDOW (selected_window
)->column_number_displayed
)
1327 || !NILP (Vexecuting_macro
));
1328 value
= internal_self_insert (c
, 0);
1335 && (PT
== ZV
|| FETCH_CHAR (PT
) == '\n'))
1337 struct Lisp_Char_Table
*dp
1338 = window_display_table (XWINDOW (selected_window
));
1345 obj
= DISP_CHAR_VECTOR (dp
, lose
);
1348 /* Do it only for char codes
1349 that by default display as themselves. */
1350 if (lose
>= 0x20 && lose
<= 0x7e)
1351 no_redisplay
= direct_output_for_insert (lose
);
1353 else if (VECTORP (obj
)
1354 && XVECTOR (obj
)->size
== 1
1355 && (obj
= XVECTOR (obj
)->contents
[0],
1357 /* Insist face not specified in glyph. */
1358 && (XINT (obj
) & ((-1) << 8)) == 0)
1360 = direct_output_for_insert (XINT (obj
));
1364 if (lose
>= 0x20 && lose
<= 0x7e)
1365 no_redisplay
= direct_output_for_insert (lose
);
1372 /* Here for a command that isn't executed directly */
1375 if (NILP (current_kboard
->Vprefix_arg
))
1377 Fcommand_execute (this_command
, Qnil
, Qnil
, Qnil
);
1382 /* If there is a prefix argument,
1383 1) We don't want Vlast_command to be ``universal-argument''
1384 (that would be dumb), so don't set Vlast_command,
1385 2) we want to leave echoing on so that the prefix will be
1386 echoed as part of this key sequence, so don't call
1388 3) we want to leave this_command_key_count non-zero, so that
1389 read_char will realize that it is re-reading a character, and
1390 not echo it a second time.
1392 If the command didn't actually create a prefix arg,
1393 but is merely a frame event that is transparent to prefix args,
1394 then the above doesn't apply. */
1395 if (NILP (current_kboard
->Vprefix_arg
) || CONSP (last_command_char
))
1397 current_kboard
->Vlast_command
= this_command
;
1399 this_command_key_count
= 0;
1400 this_single_command_key_start
= 0;
1403 /* Note that the value cell will never directly contain nil
1404 if the symbol is a local variable. */
1405 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1406 safe_run_hooks (Qpost_command_hook
);
1408 if (!NILP (Vdeferred_action_list
))
1409 safe_run_hooks (Qdeferred_action_function
);
1411 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1413 if (NILP (Vunread_command_events
)
1414 && NILP (Vexecuting_macro
)
1415 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1)))
1416 safe_run_hooks (Qpost_command_idle_hook
);
1419 if (!NILP (current_buffer
->mark_active
) && !NILP (Vrun_hooks
))
1421 if (!NILP (Vdeactivate_mark
) && !NILP (Vtransient_mark_mode
))
1423 current_buffer
->mark_active
= Qnil
;
1424 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
1426 else if (current_buffer
!= prev_buffer
|| MODIFF
!= prev_modiff
)
1427 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
1431 /* Install chars successfully executed in kbd macro. */
1433 if (!NILP (current_kboard
->defining_kbd_macro
)
1434 && NILP (current_kboard
->Vprefix_arg
))
1435 finalize_kbd_macro_chars ();
1439 any_kboard_state ();
1444 /* Subroutine for safe_run_hooks: run the hook HOOK. */
1447 safe_run_hooks_1 (hook
)
1450 return call1 (Vrun_hooks
, Vinhibit_quit
);
1453 /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */
1456 safe_run_hooks_error (data
)
1459 Fset (Vinhibit_quit
, Qnil
);
1462 /* If we get an error while running the hook, cause the hook variable
1463 to be nil. Also inhibit quits, so that C-g won't cause the hook
1464 to mysteriously evaporate. */
1467 safe_run_hooks (hook
)
1471 int count
= specpdl_ptr
- specpdl
;
1472 specbind (Qinhibit_quit
, hook
);
1474 internal_condition_case (safe_run_hooks_1
, Qt
, safe_run_hooks_error
);
1476 unbind_to (count
, Qnil
);
1479 /* Number of seconds between polling for input. */
1482 /* Nonzero means polling for input is temporarily suppressed. */
1483 int poll_suppress_count
;
1485 /* Nonzero if polling_for_input is actually being used. */
1486 int polling_for_input
;
1488 #ifdef POLL_FOR_INPUT
1490 /* Handle an alarm once each second and read pending input
1491 so as to handle a C-g if it comces in. */
1494 input_poll_signal (signalnum
) /* If we don't have an argument, */
1495 int signalnum
; /* some compilers complain in signal calls. */
1497 /* This causes the call to start_polling at the end
1498 to do its job. It also arranges for a quit or error
1499 from within read_avail_input to resume polling. */
1500 poll_suppress_count
++;
1501 if (interrupt_input_blocked
== 0
1502 && !waiting_for_input
)
1503 read_avail_input (0);
1504 /* Turn on the SIGALRM handler and request another alarm. */
1510 /* Begin signals to poll for input, if they are appropriate.
1511 This function is called unconditionally from various places. */
1515 #ifdef POLL_FOR_INPUT
1516 if (read_socket_hook
&& !interrupt_input
)
1518 poll_suppress_count
--;
1519 if (poll_suppress_count
== 0)
1521 signal (SIGALRM
, input_poll_signal
);
1522 polling_for_input
= 1;
1523 alarm (polling_period
);
1529 /* Nonzero if we are using polling to handle input asynchronously. */
1532 input_polling_used ()
1534 #ifdef POLL_FOR_INPUT
1535 return read_socket_hook
&& !interrupt_input
;
1541 /* Turn off polling. */
1545 #ifdef POLL_FOR_INPUT
1546 if (read_socket_hook
&& !interrupt_input
)
1548 if (poll_suppress_count
== 0)
1550 polling_for_input
= 0;
1553 poll_suppress_count
++;
1558 /* Set the value of poll_suppress_count to COUNT
1559 and start or stop polling accordingly. */
1562 set_poll_suppress_count (count
)
1565 #ifdef POLL_FOR_INPUT
1566 if (count
== 0 && poll_suppress_count
!= 0)
1568 poll_suppress_count
= 1;
1571 else if (count
!= 0 && poll_suppress_count
== 0)
1575 poll_suppress_count
= count
;
1579 /* Bind polling_period to a value at least N.
1580 But don't decrease it. */
1582 bind_polling_period (n
)
1585 #ifdef POLL_FOR_INPUT
1586 int new = polling_period
;
1592 specbind (Qpolling_period
, make_number (new));
1593 /* Start a new alarm with the new period. */
1598 /* Apply the control modifier to CHARACTER. */
1604 /* Save the upper bits here. */
1605 int upper
= c
& ~0177;
1609 /* Everything in the columns containing the upper-case letters
1610 denotes a control character. */
1611 if (c
>= 0100 && c
< 0140)
1615 /* Set the shift modifier for a control char
1616 made from a shifted letter. But only for letters! */
1617 if (oc
>= 'A' && oc
<= 'Z')
1618 c
|= shift_modifier
;
1621 /* The lower-case letters denote control characters too. */
1622 else if (c
>= 'a' && c
<= 'z')
1625 /* Include the bits for control and shift
1626 only if the basic ASCII code can't indicate them. */
1630 /* Replace the high bits. */
1631 c
|= (upper
& ~ctrl_modifier
);
1638 /* Input of single characters from keyboard */
1640 Lisp_Object
print_help ();
1641 static Lisp_Object
kbd_buffer_get_event ();
1642 static void record_char ();
1645 static jmp_buf wrong_kboard_jmpbuf
;
1648 /* read a character from the keyboard; call the redisplay if needed */
1649 /* commandflag 0 means do not do auto-saving, but do do redisplay.
1650 -1 means do not do redisplay, but do do autosaving.
1653 /* The arguments MAPS and NMAPS are for menu prompting.
1654 MAPS is an array of keymaps; NMAPS is the length of MAPS.
1656 PREV_EVENT is the previous input event, or nil if we are reading
1657 the first event of a key sequence.
1659 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
1660 if we used a mouse menu to read the input, or zero otherwise. If
1661 USED_MOUSE_MENU is null, we don't dereference it.
1663 Value is t if we showed a menu and the user rejected it. */
1666 read_char (commandflag
, nmaps
, maps
, prev_event
, used_mouse_menu
)
1670 Lisp_Object prev_event
;
1671 int *used_mouse_menu
;
1673 register Lisp_Object c
;
1675 jmp_buf local_getcjmp
;
1677 int key_already_recorded
= 0;
1678 Lisp_Object tem
, save
;
1679 Lisp_Object also_record
;
1682 before_command_key_count
= this_command_key_count
;
1683 before_command_echo_length
= echo_length ();
1687 if (CONSP (Vunread_command_events
))
1689 c
= XCONS (Vunread_command_events
)->car
;
1690 Vunread_command_events
= XCONS (Vunread_command_events
)->cdr
;
1692 /* Undo what read_char_x_menu_prompt did when it unread
1693 additional keys returned by Fx_popup_menu. */
1695 && (SYMBOLP (XCONS (c
)->car
) || INTEGERP (XCONS (c
)->car
))
1696 && NILP (XCONS (c
)->cdr
))
1699 if (this_command_key_count
== 0)
1705 if (unread_command_char
!= -1)
1707 XSETINT (c
, unread_command_char
);
1708 unread_command_char
= -1;
1710 if (this_command_key_count
== 0)
1716 /* If there is no function key translated before
1717 reset-this-command-lengths takes effect, forget about it. */
1718 before_command_restore_flag
= 0;
1720 if (!NILP (Vexecuting_macro
))
1722 /* We set this to Qmacro; since that's not a frame, nobody will
1723 try to switch frames on us, and the selected window will
1726 Since this event came from a macro, it would be misleading to
1727 leave internal_last_event_frame set to wherever the last
1728 real event came from. Normally, a switch-frame event selects
1729 internal_last_event_frame after each command is read, but
1730 events read from a macro should never cause a new frame to be
1732 Vlast_event_frame
= internal_last_event_frame
= Qmacro
;
1734 /* Exit the macro if we are at the end.
1735 Also, some things replace the macro with t
1736 to force an early exit. */
1737 if (EQ (Vexecuting_macro
, Qt
)
1738 || executing_macro_index
>= XFASTINT (Flength (Vexecuting_macro
)))
1744 c
= Faref (Vexecuting_macro
, make_number (executing_macro_index
));
1745 if (STRINGP (Vexecuting_macro
)
1746 && (XINT (c
) & 0x80))
1747 XSETFASTINT (c
, CHAR_META
| (XINT (c
) & ~0x80));
1749 executing_macro_index
++;
1754 if (!NILP (unread_switch_frame
))
1756 c
= unread_switch_frame
;
1757 unread_switch_frame
= Qnil
;
1759 /* This event should make it into this_command_keys, and get echoed
1760 again, so we go to reread_first, rather than reread. */
1764 if (commandflag
>= 0 && !input_pending
1765 && !detect_input_pending_run_timers (0))
1768 /* Message turns off echoing unless more keystrokes turn it on again. */
1769 if (echo_area_glyphs
&& *echo_area_glyphs
1770 && echo_area_glyphs
!= current_kboard
->echobuf
1771 && ok_to_echo_at_next_pause
!= echo_area_glyphs
)
1774 /* If already echoing, continue. */
1777 /* Try reading a character via menu prompting in the minibuf.
1778 Try this before the sit-for, because the sit-for
1779 would do the wrong thing if we are supposed to do
1780 menu prompting. If EVENT_HAS_PARAMETERS then we are reading
1781 after a mouse event so don't try a minibuf menu. */
1783 if (nmaps
> 0 && INTERACTIVE
1784 && !NILP (prev_event
) && ! EVENT_HAS_PARAMETERS (prev_event
)
1785 /* Don't bring up a menu if we already have another event. */
1786 && NILP (Vunread_command_events
)
1787 && unread_command_char
< 0
1788 && !detect_input_pending_run_timers (0))
1790 c
= read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
);
1793 key_already_recorded
= 1;
1798 /* Make a longjmp point for quits to use, but don't alter getcjmp just yet.
1799 We will do that below, temporarily for short sections of code,
1800 when appropriate. local_getcjmp must be in effect
1801 around any call to sit_for or kbd_buffer_get_event;
1802 it *must not* be in effect when we call redisplay. */
1804 if (_setjmp (local_getcjmp
))
1806 XSETINT (c
, quit_char
);
1807 XSETFRAME (internal_last_event_frame
, selected_frame
);
1808 Vlast_event_frame
= internal_last_event_frame
;
1809 /* If we report the quit char as an event,
1810 don't do so more than once. */
1811 if (!NILP (Vinhibit_quit
))
1816 KBOARD
*kb
= FRAME_KBOARD (selected_frame
);
1817 if (kb
!= current_kboard
)
1819 Lisp_Object
*tailp
= &kb
->kbd_queue
;
1820 /* We shouldn't get here if we were in single-kboard mode! */
1823 while (CONSP (*tailp
))
1824 tailp
= &XCONS (*tailp
)->cdr
;
1827 *tailp
= Fcons (c
, Qnil
);
1828 kb
->kbd_queue_has_data
= 1;
1829 current_kboard
= kb
;
1830 longjmp (wrong_kboard_jmpbuf
, 1);
1837 timer_start_idle ();
1839 /* If in middle of key sequence and minibuffer not active,
1840 start echoing if enough time elapses. */
1842 if (minibuf_level
== 0 && !current_kboard
->immediate_echo
1843 && this_command_key_count
> 0
1845 && echo_keystrokes
> 0
1846 && (echo_area_glyphs
== 0 || *echo_area_glyphs
== 0
1847 || ok_to_echo_at_next_pause
== echo_area_glyphs
))
1851 /* After a mouse event, start echoing right away.
1852 This is because we are probably about to display a menu,
1853 and we don't want to delay before doing so. */
1854 if (EVENT_HAS_PARAMETERS (prev_event
))
1858 save_getcjmp (save_jump
);
1859 restore_getcjmp (local_getcjmp
);
1860 tem0
= sit_for (echo_keystrokes
, 0, 1, 1);
1861 restore_getcjmp (save_jump
);
1867 /* Maybe auto save due to number of keystrokes. */
1869 if (commandflag
!= 0
1870 && auto_save_interval
> 0
1871 && num_nonmacro_input_chars
- last_auto_save
> max (auto_save_interval
, 20)
1872 && !detect_input_pending_run_timers (0))
1874 Fdo_auto_save (Qnil
, Qnil
);
1875 /* Hooks can actually change some buffers in auto save. */
1879 /* Try reading using an X menu.
1880 This is never confused with reading using the minibuf
1881 because the recursive call of read_char in read_char_minibuf_menu_prompt
1882 does not pass on any keymaps. */
1884 if (nmaps
> 0 && INTERACTIVE
1885 && !NILP (prev_event
)
1886 && EVENT_HAS_PARAMETERS (prev_event
)
1887 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
)
1888 /* Don't bring up a menu if we already have another event. */
1889 && NILP (Vunread_command_events
)
1890 && unread_command_char
< 0)
1891 c
= read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
);
1893 /* Maybe autosave and/or garbage collect due to idleness. */
1895 if (INTERACTIVE
&& NILP (c
))
1897 int delay_level
, buffer_size
;
1899 /* Slow down auto saves logarithmically in size of current buffer,
1900 and garbage collect while we're at it. */
1901 if (! MINI_WINDOW_P (XWINDOW (selected_window
)))
1902 last_non_minibuf_size
= Z
- BEG
;
1903 buffer_size
= (last_non_minibuf_size
>> 8) + 1;
1905 while (buffer_size
> 64)
1906 delay_level
++, buffer_size
-= buffer_size
>> 2;
1907 if (delay_level
< 4) delay_level
= 4;
1908 /* delay_level is 4 for files under around 50k, 7 at 100k,
1909 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */
1911 /* Auto save if enough time goes by without input. */
1912 if (commandflag
!= 0
1913 && num_nonmacro_input_chars
> last_auto_save
1914 && INTEGERP (Vauto_save_timeout
)
1915 && XINT (Vauto_save_timeout
) > 0)
1919 save_getcjmp (save_jump
);
1920 restore_getcjmp (local_getcjmp
);
1921 tem0
= sit_for (delay_level
* XFASTINT (Vauto_save_timeout
) / 4,
1923 restore_getcjmp (save_jump
);
1927 Fdo_auto_save (Qnil
, Qnil
);
1929 /* If we have auto-saved and there is still no input
1930 available, garbage collect if there has been enough
1931 consing going on to make it worthwhile. */
1932 if (!detect_input_pending_run_timers (0)
1933 && consing_since_gc
> gc_cons_threshold
/ 2)
1934 Fgarbage_collect ();
1941 /* Read something from current KBOARD's side queue, if possible. */
1945 if (current_kboard
->kbd_queue_has_data
)
1947 if (!CONSP (current_kboard
->kbd_queue
))
1949 c
= XCONS (current_kboard
->kbd_queue
)->car
;
1950 current_kboard
->kbd_queue
1951 = XCONS (current_kboard
->kbd_queue
)->cdr
;
1952 if (NILP (current_kboard
->kbd_queue
))
1953 current_kboard
->kbd_queue_has_data
= 0;
1954 input_pending
= readable_events (0);
1955 if (EVENT_HAS_PARAMETERS (c
)
1956 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qswitch_frame
))
1957 internal_last_event_frame
= XCONS (XCONS (c
)->cdr
)->car
;
1958 Vlast_event_frame
= internal_last_event_frame
;
1963 /* If current_kboard's side queue is empty check the other kboards.
1964 If one of them has data that we have not yet seen here,
1965 switch to it and process the data waiting for it.
1967 Note: if the events queued up for another kboard
1968 have already been seen here, and therefore are not a complete command,
1969 the kbd_queue_has_data field is 0, so we skip that kboard here.
1970 That's to avoid an infinite loop switching between kboards here. */
1971 if (NILP (c
) && !single_kboard
)
1974 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
1975 if (kb
->kbd_queue_has_data
)
1977 current_kboard
= kb
;
1978 longjmp (wrong_kboard_jmpbuf
, 1);
1987 /* Finally, we read from the main queue,
1988 and if that gives us something we can't use yet, we put it on the
1989 appropriate side queue and try again. */
1995 /* Actually read a character, waiting if necessary. */
1996 save_getcjmp (save_jump
);
1997 restore_getcjmp (local_getcjmp
);
1998 c
= kbd_buffer_get_event (&kb
, used_mouse_menu
);
1999 restore_getcjmp (save_jump
);
2002 if (! NILP (c
) && (kb
!= current_kboard
))
2004 Lisp_Object
*tailp
= &kb
->kbd_queue
;
2005 while (CONSP (*tailp
))
2006 tailp
= &XCONS (*tailp
)->cdr
;
2009 *tailp
= Fcons (c
, Qnil
);
2010 kb
->kbd_queue_has_data
= 1;
2014 current_kboard
= kb
;
2015 longjmp (wrong_kboard_jmpbuf
, 1);
2020 /* Terminate Emacs in batch mode if at eof. */
2021 if (noninteractive
&& INTEGERP (c
) && XINT (c
) < 0)
2022 Fkill_emacs (make_number (1));
2026 /* Add in any extra modifiers, where appropriate. */
2027 if ((extra_keyboard_modifiers
& CHAR_CTL
)
2028 || ((extra_keyboard_modifiers
& 0177) < ' '
2029 && (extra_keyboard_modifiers
& 0177) != 0))
2030 XSETINT (c
, make_ctrl_char (XINT (c
)));
2032 /* Transfer any other modifier bits directly from
2033 extra_keyboard_modifiers to c. Ignore the actual character code
2034 in the low 16 bits of extra_keyboard_modifiers. */
2035 XSETINT (c
, XINT (c
) | (extra_keyboard_modifiers
& ~0xff7f & ~CHAR_CTL
));
2040 /* Now that we have read an event, Emacs is not idle--
2041 unless the event was a timer event (not used now). */
2042 if (! (CONSP (c
) && EQ (XCONS (c
)->car
, Qtimer_event
)))
2049 if (commandflag
>= 0
2050 && !input_pending
&& !detect_input_pending_run_timers (0))
2058 /* Buffer switch events are only for internal wakeups
2059 so don't show them to the user. */
2063 if (key_already_recorded
)
2066 /* Process special events within read_char
2067 and loop around to read another event. */
2070 tem
= get_keyelt (access_keymap (get_keymap_1 (Vspecial_event_map
, 0, 0),
2076 int was_locked
= single_kboard
;
2078 last_input_char
= c
;
2079 Fcommand_execute (tem
, Qnil
, Fvector (1, &last_input_char
), Qt
);
2081 /* Resume allowing input from any kboard, if that was true before. */
2083 any_kboard_state ();
2088 /* Wipe the echo area. */
2089 echo_area_glyphs
= 0;
2091 /* Handle things that only apply to characters. */
2094 /* If kbd_buffer_get_event gave us an EOF, return that. */
2098 if (STRINGP (Vkeyboard_translate_table
)
2099 && XSTRING (Vkeyboard_translate_table
)->size
> (unsigned) XFASTINT (c
))
2100 XSETINT (c
, XSTRING (Vkeyboard_translate_table
)->data
[XFASTINT (c
)]);
2101 else if ((VECTORP (Vkeyboard_translate_table
)
2102 && XVECTOR (Vkeyboard_translate_table
)->size
> (unsigned) XFASTINT (c
))
2103 || (CHAR_TABLE_P (Vkeyboard_translate_table
)
2104 && CHAR_TABLE_ORDINARY_SLOTS
> (unsigned) XFASTINT (c
)))
2107 d
= Faref (Vkeyboard_translate_table
, c
);
2108 /* nil in keyboard-translate-table means no translation. */
2114 /* If this event is a mouse click in the menu bar,
2115 return just menu-bar for now. Modify the mouse click event
2116 so we won't do this twice, then queue it up. */
2117 if (EVENT_HAS_PARAMETERS (c
)
2118 && CONSP (XCONS (c
)->cdr
)
2119 && CONSP (EVENT_START (c
))
2120 && CONSP (XCONS (EVENT_START (c
))->cdr
))
2124 posn
= POSN_BUFFER_POSN (EVENT_START (c
));
2125 /* Handle menu-bar events:
2126 insert the dummy prefix event `menu-bar'. */
2127 if (EQ (posn
, Qmenu_bar
))
2129 /* Change menu-bar to (menu-bar) as the event "position". */
2130 POSN_BUFFER_POSN (EVENT_START (c
)) = Fcons (posn
, Qnil
);
2133 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
2139 if (! NILP (also_record
))
2140 record_char (also_record
);
2144 before_command_key_count
= this_command_key_count
;
2145 before_command_echo_length
= echo_length ();
2147 /* Don't echo mouse motion events. */
2149 && ! (EVENT_HAS_PARAMETERS (c
)
2150 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
2153 if (! NILP (also_record
))
2154 echo_char (also_record
);
2155 /* Once we reread a character, echoing can happen
2156 the next time we pause to read a new one. */
2157 ok_to_echo_at_next_pause
= echo_area_glyphs
;
2160 /* Record this character as part of the current key. */
2161 add_command_key (c
);
2162 if (! NILP (also_record
))
2163 add_command_key (also_record
);
2165 /* Re-reading in the middle of a command */
2167 last_input_char
= c
;
2170 /* Process the help character specially if enabled */
2171 if (!NILP (Vhelp_form
) && help_char_p (c
))
2174 count
= specpdl_ptr
- specpdl
;
2176 record_unwind_protect (Fset_window_configuration
,
2177 Fcurrent_window_configuration (Qnil
));
2179 tem0
= Feval (Vhelp_form
);
2181 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
2185 c
= read_char (0, 0, 0, Qnil
, 0);
2186 while (BUFFERP (c
));
2187 /* Remove the help from the frame */
2188 unbind_to (count
, Qnil
);
2191 if (EQ (c
, make_number (040)))
2195 c
= read_char (0, 0, 0, Qnil
, 0);
2196 while (BUFFERP (c
));
2203 /* Return 1 if should recognize C as "the help character". */
2211 if (EQ (c
, Vhelp_char
))
2213 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
2214 if (EQ (c
, XCONS (tail
)->car
))
2219 /* Record the input event C in various ways. */
2226 XVECTOR (recent_keys
)->contents
[recent_keys_index
] = c
;
2227 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
2228 recent_keys_index
= 0;
2230 /* Write c to the dribble file. If c is a lispy event, write
2231 the event's symbol to the dribble file, in <brackets>. Bleaugh.
2232 If you, dear reader, have a better idea, you've got the source. :-) */
2237 if (XUINT (c
) < 0x100)
2238 putc (XINT (c
), dribble
);
2240 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
2244 Lisp_Object dribblee
;
2246 /* If it's a structured event, take the event header. */
2247 dribblee
= EVENT_HEAD (c
);
2249 if (SYMBOLP (dribblee
))
2251 putc ('<', dribble
);
2252 fwrite (XSYMBOL (dribblee
)->name
->data
, sizeof (char),
2253 XSYMBOL (dribblee
)->name
->size
,
2255 putc ('>', dribble
);
2262 store_kbd_macro_char (c
);
2264 num_nonmacro_input_chars
++;
2271 struct buffer
*old
= current_buffer
;
2272 Fprinc (object
, Qnil
);
2273 set_buffer_internal (XBUFFER (Vstandard_output
));
2274 call0 (intern ("help-mode"));
2275 set_buffer_internal (old
);
2279 /* Copy out or in the info on where C-g should throw to.
2280 This is used when running Lisp code from within get_char,
2281 in case get_char is called recursively.
2282 See read_process_output. */
2287 bcopy (getcjmp
, temp
, sizeof getcjmp
);
2290 restore_getcjmp (temp
)
2293 bcopy (temp
, getcjmp
, sizeof getcjmp
);
2298 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
2299 of this function. */
2302 tracking_off (old_value
)
2303 Lisp_Object old_value
;
2305 do_mouse_tracking
= old_value
;
2306 if (NILP (old_value
))
2308 /* Redisplay may have been preempted because there was input
2309 available, and it assumes it will be called again after the
2310 input has been processed. If the only input available was
2311 the sort that we have just disabled, then we need to call
2313 if (!readable_events (1))
2315 redisplay_preserve_echo_area ();
2316 get_input_pending (&input_pending
, 1);
2321 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
2322 "Evaluate BODY with mouse movement events enabled.\n\
2323 Within a `track-mouse' form, mouse motion generates input events that\n\
2324 you can read with `read-event'.\n\
2325 Normally, mouse motion is ignored.")
2329 int count
= specpdl_ptr
- specpdl
;
2332 record_unwind_protect (tracking_off
, do_mouse_tracking
);
2334 do_mouse_tracking
= Qt
;
2336 val
= Fprogn (args
);
2337 return unbind_to (count
, val
);
2340 /* If mouse has moved on some frame, return one of those frames.
2341 Return 0 otherwise. */
2346 Lisp_Object tail
, frame
;
2348 FOR_EACH_FRAME (tail
, frame
)
2350 if (XFRAME (frame
)->mouse_moved
)
2351 return XFRAME (frame
);
2357 #endif /* HAVE_MOUSE */
2359 /* Low level keyboard/mouse input.
2360 kbd_buffer_store_event places events in kbd_buffer, and
2361 kbd_buffer_get_event retrieves them. */
2363 /* Return true iff there are any events in the queue that read-char
2364 would return. If this returns false, a read-char would block. */
2366 readable_events (do_timers_now
)
2370 timer_check (do_timers_now
);
2372 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2375 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2380 if (current_kboard
->kbd_queue_has_data
)
2386 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
2387 if (kb
->kbd_queue_has_data
)
2393 /* Set this for debugging, to have a way to get out */
2398 event_to_kboard (event
)
2399 struct input_event
*event
;
2402 frame
= event
->frame_or_window
;
2404 frame
= XCONS (frame
)->car
;
2405 else if (WINDOWP (frame
))
2406 frame
= WINDOW_FRAME (XWINDOW (frame
));
2408 /* There are still some events that don't set this field.
2409 For now, just ignore the problem.
2410 Also ignore dead frames here. */
2411 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
2414 return FRAME_KBOARD (XFRAME (frame
));
2418 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
2421 kbd_buffer_store_event (event
)
2422 register struct input_event
*event
;
2424 if (event
->kind
== no_event
)
2427 if (event
->kind
== ascii_keystroke
)
2429 register int c
= event
->code
& 0377;
2431 if (event
->modifiers
& ctrl_modifier
)
2432 c
= make_ctrl_char (c
);
2434 c
|= (event
->modifiers
2435 & (meta_modifier
| alt_modifier
2436 | hyper_modifier
| super_modifier
));
2440 extern SIGTYPE
interrupt_signal ();
2443 struct input_event
*sp
;
2446 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
2447 kb
!= current_kboard
))
2450 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
2451 Fcons (make_number (c
), Qnil
));
2452 kb
->kbd_queue_has_data
= 1;
2453 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
2455 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
2458 if (event_to_kboard (sp
) == kb
)
2460 sp
->kind
= no_event
;
2461 sp
->frame_or_window
= Qnil
;
2468 /* If this results in a quit_char being returned to Emacs as
2469 input, set Vlast_event_frame properly. If this doesn't
2470 get returned to Emacs as an event, the next event read
2471 will set Vlast_event_frame again, so this is safe to do. */
2475 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
2477 focus
= event
->frame_or_window
;
2478 internal_last_event_frame
= focus
;
2479 Vlast_event_frame
= focus
;
2482 last_event_timestamp
= event
->timestamp
;
2483 interrupt_signal ();
2487 if (c
&& c
== stop_character
)
2493 /* Don't insert two buffer_switch_event's in a row.
2494 Just ignore the second one. */
2495 else if (event
->kind
== buffer_switch_event
2496 && kbd_fetch_ptr
!= kbd_store_ptr
2497 && kbd_store_ptr
->kind
== buffer_switch_event
)
2500 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
2501 kbd_store_ptr
= kbd_buffer
;
2503 /* Don't let the very last slot in the buffer become full,
2504 since that would make the two pointers equal,
2505 and that is indistinguishable from an empty buffer.
2506 Discard the event if it would fill the last slot. */
2507 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
2509 volatile struct input_event
*sp
= kbd_store_ptr
;
2510 sp
->kind
= event
->kind
;
2511 if (event
->kind
== selection_request_event
)
2513 /* We must not use the ordinary copying code for this case,
2514 since `part' is an enum and copying it might not copy enough
2516 bcopy (event
, (char *) sp
, sizeof (*event
));
2520 sp
->code
= event
->code
;
2521 sp
->part
= event
->part
;
2522 sp
->frame_or_window
= event
->frame_or_window
;
2523 sp
->modifiers
= event
->modifiers
;
2526 sp
->timestamp
= event
->timestamp
;
2528 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_store_ptr
2530 = event
->frame_or_window
);
2536 /* Read one event from the event buffer, waiting if necessary.
2537 The value is a Lisp object representing the event.
2538 The value is nil for an event that should be ignored,
2539 or that was handled here.
2540 We always read and discard one event. */
2543 kbd_buffer_get_event (kbp
, used_mouse_menu
)
2545 int *used_mouse_menu
;
2549 EMACS_TIME next_timer_delay
;
2555 *kbp
= current_kboard
;
2559 /* Wait until there is input available. */
2562 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2565 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2569 /* If the quit flag is set, then read_char will return
2570 quit_char, so that counts as "available input." */
2571 if (!NILP (Vquit_flag
))
2572 quit_throw_to_read_char ();
2574 /* One way or another, wait until input is available; then, if
2575 interrupt handlers have not read it, read it now. */
2578 wait_for_kbd_input ();
2580 /* Note SIGIO has been undef'd if FIONREAD is missing. */
2584 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2587 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2591 Lisp_Object minus_one
;
2593 XSETINT (minus_one
, -1);
2594 wait_reading_process_input (0, 0, minus_one
, 1);
2596 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
2597 /* Pass 1 for EXPECT since we just waited to have input. */
2598 read_avail_input (1);
2600 #endif /* not VMS */
2603 /* At this point, we know that there is a readable event available
2604 somewhere. If the event queue is empty, then there must be a
2605 mouse movement enabled and available. */
2606 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2608 struct input_event
*event
;
2610 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2614 last_event_timestamp
= event
->timestamp
;
2617 *kbp
= event_to_kboard (event
);
2619 *kbp
= current_kboard
; /* Better than returning null ptr? */
2621 *kbp
= &the_only_kboard
;
2626 /* These two kinds of events get special handling
2627 and don't actually appear to the command loop.
2628 We return nil for them. */
2629 if (event
->kind
== selection_request_event
)
2632 struct input_event copy
;
2634 /* Remove it from the buffer before processing it,
2635 since otherwise swallow_events will see it
2636 and process it again. */
2638 kbd_fetch_ptr
= event
+ 1;
2639 input_pending
= readable_events (0);
2640 x_handle_selection_request (©
);
2642 /* We're getting selection request events, but we don't have
2648 else if (event
->kind
== selection_clear_event
)
2651 struct input_event copy
;
2653 /* Remove it from the buffer before processing it. */
2655 kbd_fetch_ptr
= event
+ 1;
2656 input_pending
= readable_events (0);
2657 x_handle_selection_clear (©
);
2659 /* We're getting selection request events, but we don't have
2664 #if defined (HAVE_X11) || defined (HAVE_NTGUI)
2665 else if (event
->kind
== delete_window_event
)
2667 /* Make an event (delete-frame (FRAME)). */
2668 obj
= Fcons (event
->frame_or_window
, Qnil
);
2669 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
2670 kbd_fetch_ptr
= event
+ 1;
2672 else if (event
->kind
== iconify_event
)
2674 /* Make an event (iconify-frame (FRAME)). */
2675 obj
= Fcons (event
->frame_or_window
, Qnil
);
2676 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
2677 kbd_fetch_ptr
= event
+ 1;
2679 else if (event
->kind
== deiconify_event
)
2681 /* Make an event (make-frame-visible (FRAME)). */
2682 obj
= Fcons (event
->frame_or_window
, Qnil
);
2683 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
2684 kbd_fetch_ptr
= event
+ 1;
2687 else if (event
->kind
== buffer_switch_event
)
2689 /* The value doesn't matter here; only the type is tested. */
2690 XSETBUFFER (obj
, current_buffer
);
2691 kbd_fetch_ptr
= event
+ 1;
2693 #ifdef USE_X_TOOLKIT
2694 else if (event
->kind
== menu_bar_activate_event
)
2696 kbd_fetch_ptr
= event
+ 1;
2697 input_pending
= readable_events (0);
2698 if (FRAME_LIVE_P (XFRAME (event
->frame_or_window
)))
2699 x_activate_menubar (XFRAME (event
->frame_or_window
));
2702 /* Just discard these, by returning nil.
2703 With MULTI_KBOARD, these events are used as placeholders
2704 when we need to randomly delete events from the queue.
2705 (They shouldn't otherwise be found in the buffer,
2706 but on some machines it appears they do show up
2707 even without MULTI_KBOARD.) */
2708 else if (event
->kind
== no_event
)
2709 kbd_fetch_ptr
= event
+ 1;
2711 /* If this event is on a different frame, return a switch-frame this
2712 time, and leave the event in the queue for next time. */
2718 frame
= event
->frame_or_window
;
2720 frame
= XCONS (frame
)->car
;
2721 else if (WINDOWP (frame
))
2722 frame
= WINDOW_FRAME (XWINDOW (frame
));
2724 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
2728 if (! EQ (frame
, internal_last_event_frame
)
2729 && XFRAME (frame
) != selected_frame
)
2730 obj
= make_lispy_switch_frame (frame
);
2731 internal_last_event_frame
= frame
;
2733 /* If we didn't decide to make a switch-frame event, go ahead
2734 and build a real event from the queue entry. */
2738 obj
= make_lispy_event (event
);
2739 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
2740 /* If this was a menu selection, then set the flag to inhibit
2741 writing to last_nonmenu_event. Don't do this if the event
2742 we're returning is (menu-bar), though; that indicates the
2743 beginning of the menu sequence, and we might as well leave
2744 that as the `event with parameters' for this selection. */
2745 if (event
->kind
== menu_bar_event
2746 && !(CONSP (obj
) && EQ (XCONS (obj
)->car
, Qmenu_bar
))
2748 *used_mouse_menu
= 1;
2751 /* Wipe out this event, to catch bugs. */
2752 event
->kind
= no_event
;
2753 XVECTOR (kbd_buffer_frame_or_window
)->contents
[event
- kbd_buffer
] = Qnil
;
2755 kbd_fetch_ptr
= event
+ 1;
2760 /* Try generating a mouse motion event. */
2761 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2763 FRAME_PTR f
= some_mouse_moved ();
2764 Lisp_Object bar_window
;
2765 enum scroll_bar_part part
;
2769 *kbp
= current_kboard
;
2770 /* Note that this uses F to determine which display to look at.
2771 If there is no valid info, it does not store anything
2772 so x remains nil. */
2774 (*mouse_position_hook
) (&f
, 0, &bar_window
, &part
, &x
, &y
, &time
);
2778 /* Decide if we should generate a switch-frame event. Don't
2779 generate switch-frame events for motion outside of all Emacs
2785 frame
= FRAME_FOCUS_FRAME (f
);
2787 XSETFRAME (frame
, f
);
2789 if (! EQ (frame
, internal_last_event_frame
)
2790 && XFRAME (frame
) != selected_frame
)
2791 obj
= make_lispy_switch_frame (frame
);
2792 internal_last_event_frame
= frame
;
2795 /* If we didn't decide to make a switch-frame event, go ahead and
2796 return a mouse-motion event. */
2797 if (!NILP (x
) && NILP (obj
))
2798 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
2800 #endif /* HAVE_MOUSE */
2802 /* We were promised by the above while loop that there was
2803 something for us to read! */
2806 input_pending
= readable_events (0);
2808 Vlast_event_frame
= internal_last_event_frame
;
2813 /* Process any events that are not user-visible,
2814 then return, without reading any user-visible events. */
2817 swallow_events (do_display
)
2822 while (kbd_fetch_ptr
!= kbd_store_ptr
)
2824 struct input_event
*event
;
2826 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2830 last_event_timestamp
= event
->timestamp
;
2832 /* These two kinds of events get special handling
2833 and don't actually appear to the command loop. */
2834 if (event
->kind
== selection_request_event
)
2837 struct input_event copy
;
2839 /* Remove it from the buffer before processing it,
2840 since otherwise swallow_events called recursively could see it
2841 and process it again. */
2843 kbd_fetch_ptr
= event
+ 1;
2844 input_pending
= readable_events (0);
2845 x_handle_selection_request (©
);
2847 /* We're getting selection request events, but we don't have
2853 else if (event
->kind
== selection_clear_event
)
2856 struct input_event copy
;
2858 /* Remove it from the buffer before processing it, */
2861 kbd_fetch_ptr
= event
+ 1;
2862 input_pending
= readable_events (0);
2863 x_handle_selection_clear (©
);
2865 /* We're getting selection request events, but we don't have
2870 /* Note that timer_event is currently never used. */
2871 else if (event
->kind
== timer_event
)
2873 Lisp_Object tem
, lisp_event
;
2874 int was_locked
= single_kboard
;
2876 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
2877 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
2879 lisp_event
= Fcons (Qtimer_event
,
2880 Fcons (Fcdr (event
->frame_or_window
), Qnil
));
2881 kbd_fetch_ptr
= event
+ 1;
2882 if (kbd_fetch_ptr
== kbd_store_ptr
)
2884 Fcommand_execute (tem
, Qnil
, Fvector (1, &lisp_event
), Qt
);
2887 redisplay_preserve_echo_area ();
2889 /* Resume allowing input from any kboard, if that was true before. */
2891 any_kboard_state ();
2897 old_timers_run
= timers_run
;
2898 get_input_pending (&input_pending
, 1);
2900 if (timers_run
!= old_timers_run
&& do_display
)
2901 redisplay_preserve_echo_area ();
2904 static EMACS_TIME timer_idleness_start_time
;
2906 /* Record the start of when Emacs is idle,
2907 for the sake of running idle-time timers. */
2913 /* If we are already in the idle state, do nothing. */
2914 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2917 EMACS_GET_TIME (timer_idleness_start_time
);
2919 /* Mark all idle-time timers as once again candidates for running. */
2920 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCONS (timers
)->cdr
)
2924 timer
= XCONS (timers
)->car
;
2926 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
2928 XVECTOR (timer
)->contents
[0] = Qnil
;
2932 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
2936 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
2939 /* This is only for debugging. */
2940 struct input_event last_timer_event
;
2942 /* Check whether a timer has fired. To prevent larger problems we simply
2943 disregard elements that are not proper timers. Do not make a circular
2944 timer list for the time being.
2946 Returns the number of seconds to wait until the next timer fires. If a
2947 timer is triggering now, return zero seconds.
2948 If no timer is active, return -1 seconds.
2950 If a timer is ripe, we run it, with quitting turned off.
2952 DO_IT_NOW is now ignored. It used to mean that we should
2953 run the timer directly instead of queueing a timer-event.
2954 Now we always run timers directly. */
2957 timer_check (do_it_now
)
2960 EMACS_TIME nexttime
;
2961 EMACS_TIME now
, idleness_now
;
2962 Lisp_Object timers
, idle_timers
, chosen_timer
;
2963 /* Nonzero if we generate some events. */
2964 int events_generated
= 0;
2965 struct gcpro gcpro1
, gcpro2
, gcpro3
;
2967 EMACS_SET_SECS (nexttime
, -1);
2968 EMACS_SET_USECS (nexttime
, -1);
2970 /* Always consider the ordinary timers. */
2971 timers
= Vtimer_list
;
2972 /* Consider the idle timers only if Emacs is idle. */
2973 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2974 idle_timers
= Vtimer_idle_list
;
2977 chosen_timer
= Qnil
;
2978 GCPRO3 (timers
, idle_timers
, chosen_timer
);
2980 if (CONSP (timers
) || CONSP (idle_timers
))
2982 EMACS_GET_TIME (now
);
2983 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2984 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
2987 while (CONSP (timers
) || CONSP (idle_timers
))
2989 int triggertime
= EMACS_SECS (now
);
2990 Lisp_Object
*vector
;
2991 Lisp_Object timer
, idle_timer
;
2992 EMACS_TIME timer_time
, idle_timer_time
;
2993 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
2995 /* Skip past invalid timers and timers already handled. */
2998 timer
= XCONS (timers
)->car
;
2999 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
3001 timers
= XCONS (timers
)->cdr
;
3004 vector
= XVECTOR (timer
)->contents
;
3006 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
3007 || !INTEGERP (vector
[3])
3008 || ! NILP (vector
[0]))
3010 timers
= XCONS (timers
)->cdr
;
3014 if (!NILP (idle_timers
))
3016 timer
= XCONS (idle_timers
)->car
;
3017 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
3019 idle_timers
= XCONS (idle_timers
)->cdr
;
3022 vector
= XVECTOR (timer
)->contents
;
3024 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
3025 || !INTEGERP (vector
[3])
3026 || ! NILP (vector
[0]))
3028 idle_timers
= XCONS (idle_timers
)->cdr
;
3033 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
3034 based on the next ordinary timer.
3035 TIMER_DIFFERENCE is the distance in time from NOW to when
3036 this timer becomes ripe (negative if it's already ripe). */
3039 timer
= XCONS (timers
)->car
;
3040 vector
= XVECTOR (timer
)->contents
;
3041 EMACS_SET_SECS (timer_time
,
3042 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3043 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
3044 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
3047 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
3048 based on the next idle timer. */
3049 if (!NILP (idle_timers
))
3051 idle_timer
= XCONS (idle_timers
)->car
;
3052 vector
= XVECTOR (idle_timer
)->contents
;
3053 EMACS_SET_SECS (idle_timer_time
,
3054 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3055 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
3056 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
3059 /* Decide which timer is the next timer,
3060 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
3061 Also step down the list where we found that timer. */
3063 if (! NILP (timers
) && ! NILP (idle_timers
))
3066 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
3067 if (EMACS_TIME_NEG_P (temp
))
3069 chosen_timer
= timer
;
3070 timers
= XCONS (timers
)->cdr
;
3071 difference
= timer_difference
;
3075 chosen_timer
= idle_timer
;
3076 idle_timers
= XCONS (idle_timers
)->cdr
;
3077 difference
= idle_timer_difference
;
3080 else if (! NILP (timers
))
3082 chosen_timer
= timer
;
3083 timers
= XCONS (timers
)->cdr
;
3084 difference
= timer_difference
;
3088 chosen_timer
= idle_timer
;
3089 idle_timers
= XCONS (idle_timers
)->cdr
;
3090 difference
= idle_timer_difference
;
3092 vector
= XVECTOR (chosen_timer
)->contents
;
3094 /* If timer is rupe, run it if it hasn't been run. */
3095 if (EMACS_TIME_NEG_P (difference
)
3096 || (EMACS_SECS (difference
) == 0
3097 && EMACS_USECS (difference
) == 0))
3099 if (NILP (vector
[0]))
3101 /* Mark the timer as triggered to prevent problems if the lisp
3102 code fails to reschedule it right. */
3105 /* Run the timer or queue a timer event. */
3108 Lisp_Object tem
, event
;
3109 int was_locked
= single_kboard
;
3110 int count
= specpdl_ptr
- specpdl
;
3112 specbind (Qinhibit_quit
, Qt
);
3114 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
3115 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
3117 event
= Fcons (Qtimer_event
, Fcons (chosen_timer
, Qnil
));
3118 Fcommand_execute (tem
, Qnil
, Fvector (1, &event
), Qt
);
3121 unbind_to (count
, Qnil
);
3123 /* Resume allowing input from any kboard, if that was true before. */
3125 any_kboard_state ();
3127 /* Since we have handled the event,
3128 we don't need to tell the caller to wake up and do it. */
3133 /* Generate a timer event so the caller will handle it. */
3134 struct input_event event
;
3136 event
.kind
= timer_event
;
3137 event
.modifiers
= 0;
3138 event
.x
= event
.y
= Qnil
;
3139 event
.timestamp
= triggertime
;
3140 /* Store the timer in the frame slot. */
3141 event
.frame_or_window
3142 = Fcons (Fselected_frame (), chosen_timer
);
3143 kbd_buffer_store_event (&event
);
3145 last_timer_event
= event
;
3147 /* Tell caller to handle this event right away. */
3148 events_generated
= 1;
3149 EMACS_SET_SECS (nexttime
, 0);
3150 EMACS_SET_USECS (nexttime
, 0);
3152 /* Don't queue more than one event at once.
3153 When Emacs is ready for another, it will
3154 queue the next one. */
3162 /* When we encounter a timer that is still waiting,
3163 return the amount of time to wait before it is ripe. */
3166 /* But if we generated an event,
3167 tell the caller to handle it now. */
3168 if (events_generated
)
3174 /* No timers are pending in the future. */
3175 /* Return 0 if we generated an event, and -1 if not. */
3180 /* Caches for modify_event_symbol. */
3181 static Lisp_Object accent_key_syms
;
3182 static Lisp_Object func_key_syms
;
3183 static Lisp_Object mouse_syms
;
3185 /* This is a list of keysym codes for special "accent" characters.
3186 It parallels lispy_accent_keys. */
3188 static int lispy_accent_codes
[] =
3190 #ifdef XK_dead_circumflex
3195 #ifdef XK_dead_grave
3200 #ifdef XK_dead_tilde
3205 #ifdef XK_dead_diaeresis
3210 #ifdef XK_dead_macron
3215 #ifdef XK_dead_degree
3220 #ifdef XK_dead_acute
3225 #ifdef XK_dead_cedilla
3230 #ifdef XK_dead_breve
3235 #ifdef XK_dead_ogonek
3240 #ifdef XK_dead_caron
3245 #ifdef XK_dead_doubleacute
3246 XK_dead_doubleacute
,
3250 #ifdef XK_dead_abovedot
3257 /* This is a list of Lisp names for special "accent" characters.
3258 It parallels lispy_accent_codes. */
3260 static char *lispy_accent_keys
[] =
3278 #define FUNCTION_KEY_OFFSET 0x0
3280 char *lispy_function_keys
[] =
3284 0, /* VK_LBUTTON 0x01 */
3285 0, /* VK_RBUTTON 0x02 */
3286 "cancel", /* VK_CANCEL 0x03 */
3287 0, /* VK_MBUTTON 0x04 */
3289 0, 0, 0, /* 0x05 .. 0x07 */
3291 "backspace", /* VK_BACK 0x08 */
3292 "tab", /* VK_TAB 0x09 */
3294 0, 0, /* 0x0A .. 0x0B */
3296 "clear", /* VK_CLEAR 0x0C */
3297 "return", /* VK_RETURN 0x0D */
3299 0, 0, /* 0x0E .. 0x0F */
3301 "shift", /* VK_SHIFT 0x10 */
3302 "control", /* VK_CONTROL 0x11 */
3303 "menu", /* VK_MENU 0x12 */
3304 "pause", /* VK_PAUSE 0x13 */
3305 "capital", /* VK_CAPITAL 0x14 */
3307 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
3309 0, /* VK_ESCAPE 0x1B */
3311 0, 0, 0, 0, /* 0x1C .. 0x1F */
3313 0, /* VK_SPACE 0x20 */
3314 "prior", /* VK_PRIOR 0x21 */
3315 "next", /* VK_NEXT 0x22 */
3316 "end", /* VK_END 0x23 */
3317 "home", /* VK_HOME 0x24 */
3318 "left", /* VK_LEFT 0x25 */
3319 "up", /* VK_UP 0x26 */
3320 "right", /* VK_RIGHT 0x27 */
3321 "down", /* VK_DOWN 0x28 */
3322 "select", /* VK_SELECT 0x29 */
3323 "print", /* VK_PRINT 0x2A */
3324 "execute", /* VK_EXECUTE 0x2B */
3325 "snapshot", /* VK_SNAPSHOT 0x2C */
3326 "insert", /* VK_INSERT 0x2D */
3327 "delete", /* VK_DELETE 0x2E */
3328 "help", /* VK_HELP 0x2F */
3330 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
3332 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3334 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
3336 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
3338 0, 0, 0, 0, 0, 0, 0, 0, 0,
3339 0, 0, 0, 0, 0, 0, 0, 0, 0,
3340 0, 0, 0, 0, 0, 0, 0, 0,
3342 "lwindow", /* VK_LWIN 0x5B */
3343 "rwindow", /* VK_RWIN 0x5C */
3344 "apps", /* VK_APPS 0x5D */
3346 0, 0, /* 0x5E .. 0x5F */
3348 "kp-0", /* VK_NUMPAD0 0x60 */
3349 "kp-1", /* VK_NUMPAD1 0x61 */
3350 "kp-2", /* VK_NUMPAD2 0x62 */
3351 "kp-3", /* VK_NUMPAD3 0x63 */
3352 "kp-4", /* VK_NUMPAD4 0x64 */
3353 "kp-5", /* VK_NUMPAD5 0x65 */
3354 "kp-6", /* VK_NUMPAD6 0x66 */
3355 "kp-7", /* VK_NUMPAD7 0x67 */
3356 "kp-8", /* VK_NUMPAD8 0x68 */
3357 "kp-9", /* VK_NUMPAD9 0x69 */
3358 "kp-multiply", /* VK_MULTIPLY 0x6A */
3359 "kp-add", /* VK_ADD 0x6B */
3360 "kp-separator", /* VK_SEPARATOR 0x6C */
3361 "kp-subtract", /* VK_SUBTRACT 0x6D */
3362 "kp-decimal", /* VK_DECIMAL 0x6E */
3363 "kp-divide", /* VK_DIVIDE 0x6F */
3364 "f1", /* VK_F1 0x70 */
3365 "f2", /* VK_F2 0x71 */
3366 "f3", /* VK_F3 0x72 */
3367 "f4", /* VK_F4 0x73 */
3368 "f5", /* VK_F5 0x74 */
3369 "f6", /* VK_F6 0x75 */
3370 "f7", /* VK_F7 0x76 */
3371 "f8", /* VK_F8 0x77 */
3372 "f9", /* VK_F9 0x78 */
3373 "f10", /* VK_F10 0x79 */
3374 "f11", /* VK_F11 0x7A */
3375 "f12", /* VK_F12 0x7B */
3376 "f13", /* VK_F13 0x7C */
3377 "f14", /* VK_F14 0x7D */
3378 "f15", /* VK_F15 0x7E */
3379 "f16", /* VK_F16 0x7F */
3380 "f17", /* VK_F17 0x80 */
3381 "f18", /* VK_F18 0x81 */
3382 "f19", /* VK_F19 0x82 */
3383 "f20", /* VK_F20 0x83 */
3384 "f21", /* VK_F21 0x84 */
3385 "f22", /* VK_F22 0x85 */
3386 "f23", /* VK_F23 0x86 */
3387 "f24", /* VK_F24 0x87 */
3389 0, 0, 0, 0, /* 0x88 .. 0x8B */
3390 0, 0, 0, 0, /* 0x8C .. 0x8F */
3392 "kp-numlock", /* VK_NUMLOCK 0x90 */
3393 "scroll", /* VK_SCROLL 0x91 */
3395 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
3396 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
3397 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
3398 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
3399 "kp-end", /* VK_NUMPAD_END 0x96 */
3400 "kp-home", /* VK_NUMPAD_HOME 0x97 */
3401 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
3402 "kp-up", /* VK_NUMPAD_UP 0x99 */
3403 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
3404 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
3405 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
3406 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
3408 0, 0, /* 0x9E .. 0x9F */
3411 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
3412 * Used only as parameters to GetAsyncKeyState() and GetKeyState().
3413 * No other API or message will distinguish left and right keys this way.
3417 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3418 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3419 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3420 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3421 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3427 "attn", /* VK_ATTN 0xF6 */
3428 "crsel", /* VK_CRSEL 0xF7 */
3429 "exsel", /* VK_EXSEL 0xF8 */
3430 "ereof", /* VK_EREOF 0xF9 */
3431 "play", /* VK_PLAY 0xFA */
3432 "zoom", /* VK_ZOOM 0xFB */
3433 "noname", /* VK_NONAME 0xFC */
3434 "pa1", /* VK_PA1 0xFD */
3435 "oem_clear", /* VK_OEM_CLEAR 0xFE */
3440 #define FUNCTION_KEY_OFFSET 0xff00
3442 /* You'll notice that this table is arranged to be conveniently
3443 indexed by X Windows keysym values. */
3444 static char *lispy_function_keys
[] =
3446 /* X Keysym value */
3448 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */
3456 0, 0, 0, /* 0xff10 */
3458 0, 0, 0, 0, 0, 0, 0,
3461 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */
3462 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */
3463 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
3465 "home", /* 0xff50 */ /* IsCursorKey */
3476 "select", /* 0xff60 */ /* IsMiscFunctionKey */
3487 "break", /* 0xff6b */
3489 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0,
3491 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */
3492 "kp-space", /* 0xff80 */ /* IsKeypadKey */
3493 0, 0, 0, 0, 0, 0, 0, 0,
3494 "kp-tab", /* 0xff89 */
3496 "kp-enter", /* 0xff8d */
3498 "kp-f1", /* 0xff91 */
3502 "kp-home", /* 0xff95 */
3507 "kp-prior", /* kp-page-up */
3508 "kp-next", /* kp-page-down */
3514 0, 0, 0, 0, 0, 0, 0, 0, 0,
3515 "kp-multiply", /* 0xffaa */
3520 "kp-divide", /* 0xffaf */
3521 "kp-0", /* 0xffb0 */
3522 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
3525 "kp-equal", /* 0xffbd */
3526 "f1", /* 0xffbe */ /* IsFunctionKey */
3528 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
3529 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
3530 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
3531 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
3532 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
3533 0, 0, 0, 0, 0, 0, 0, 0,
3534 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
3535 0, 0, 0, 0, 0, 0, 0, "delete"
3538 #endif /* HAVE_NTGUI */
3540 static char *lispy_mouse_names
[] =
3542 "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5"
3545 /* Scroll bar parts. */
3546 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
3547 Lisp_Object Qup
, Qdown
;
3549 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
3550 Lisp_Object
*scroll_bar_parts
[] = {
3551 &Qabove_handle
, &Qhandle
, &Qbelow_handle
,
3556 /* A vector, indexed by button number, giving the down-going location
3557 of currently depressed buttons, both scroll bar and non-scroll bar.
3559 The elements have the form
3560 (BUTTON-NUMBER MODIFIER-MASK . REST)
3561 where REST is the cdr of a position as it would be reported in the event.
3563 The make_lispy_event function stores positions here to tell the
3564 difference between click and drag events, and to store the starting
3565 location to be included in drag events. */
3567 static Lisp_Object button_down_location
;
3569 /* Information about the most recent up-going button event: Which
3570 button, what location, and what time. */
3572 static int last_mouse_button
;
3573 static int last_mouse_x
;
3574 static int last_mouse_y
;
3575 static unsigned long button_down_time
;
3577 /* The maximum time between clicks to make a double-click,
3578 or Qnil to disable double-click detection,
3579 or Qt for no time limit. */
3580 Lisp_Object Vdouble_click_time
;
3582 /* The number of clicks in this multiple-click. */
3584 int double_click_count
;
3586 /* Given a struct input_event, build the lisp event which represents
3587 it. If EVENT is 0, build a mouse movement event from the mouse
3588 movement buffer, which should have a movement event in it.
3590 Note that events must be passed to this function in the order they
3591 are received; this function stores the location of button presses
3592 in order to build drag events when the button is released. */
3595 make_lispy_event (event
)
3596 struct input_event
*event
;
3600 switch (SWITCH_ENUM_CAST (event
->kind
))
3602 /* A simple keystroke. */
3603 case ascii_keystroke
:
3605 Lisp_Object lispy_c
;
3606 int c
= event
->code
& 0377;
3607 /* Turn ASCII characters into control characters
3609 if (event
->modifiers
& ctrl_modifier
)
3610 c
= make_ctrl_char (c
);
3612 /* Add in the other modifier bits. We took care of ctrl_modifier
3613 just above, and the shift key was taken care of by the X code,
3614 and applied to control characters by make_ctrl_char. */
3615 c
|= (event
->modifiers
3616 & (meta_modifier
| alt_modifier
3617 | hyper_modifier
| super_modifier
));
3618 button_down_time
= 0;
3619 XSETFASTINT (lispy_c
, c
);
3623 /* A function key. The symbol may need to have modifier prefixes
3625 case non_ascii_keystroke
:
3626 button_down_time
= 0;
3628 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
3629 if (event
->code
== lispy_accent_codes
[i
])
3630 return modify_event_symbol (i
,
3632 Qfunction_key
, Qnil
,
3633 lispy_accent_keys
, &accent_key_syms
,
3634 (sizeof (lispy_accent_keys
)
3635 / sizeof (lispy_accent_keys
[0])));
3637 /* Handle system-specific keysyms. */
3638 if (event
->code
& (1 << 28))
3640 /* We need to use an alist rather than a vector as the cache
3641 since we can't make a vector long enuf. */
3642 if (NILP (current_kboard
->system_key_syms
))
3643 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
3644 return modify_event_symbol (event
->code
,
3647 current_kboard
->Vsystem_key_alist
,
3648 0, ¤t_kboard
->system_key_syms
,
3652 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
3654 Qfunction_key
, Qnil
,
3655 lispy_function_keys
, &func_key_syms
,
3656 (sizeof (lispy_function_keys
)
3657 / sizeof (lispy_function_keys
[0])));
3660 /* Note that timer_event is currently never used. */
3662 return Fcons (Qtimer_event
, Fcons (Fcdr (event
->frame_or_window
), Qnil
));
3665 /* A mouse click. Figure out where it is, decide whether it's
3666 a press, click or drag, and build the appropriate structure. */
3668 case scroll_bar_click
:
3670 int button
= event
->code
;
3672 Lisp_Object position
;
3673 Lisp_Object
*start_pos_ptr
;
3674 Lisp_Object start_pos
;
3676 if (button
< 0 || button
>= NUM_MOUSE_BUTTONS
)
3679 /* Build the position as appropriate for this mouse click. */
3680 if (event
->kind
== mouse_click
)
3683 FRAME_PTR f
= XFRAME (event
->frame_or_window
);
3688 /* Ignore mouse events that were made on frame that
3689 have been deleted. */
3690 if (! FRAME_LIVE_P (f
))
3693 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
3694 &column
, &row
, NULL
, 1);
3696 #ifndef USE_X_TOOLKIT
3697 /* In the non-toolkit version, clicks on the menu bar
3698 are ordinary button events in the event buffer.
3699 Distinguish them, and invoke the menu.
3701 (In the toolkit version, the toolkit handles the menu bar
3702 and Emacs doesn't know about it until after the user
3703 makes a selection.) */
3704 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
3705 && (event
->modifiers
& down_modifier
))
3707 Lisp_Object items
, item
;
3712 /* Activate the menu bar on the down event. If the
3713 up event comes in before the menu code can deal with it,
3715 if (! (event
->modifiers
& down_modifier
))
3720 items
= FRAME_MENU_BAR_ITEMS (f
);
3721 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 4)
3723 Lisp_Object pos
, string
;
3724 string
= XVECTOR (items
)->contents
[i
+ 1];
3725 pos
= XVECTOR (items
)->contents
[i
+ 3];
3728 if (column
>= XINT (pos
)
3729 && column
< XINT (pos
) + XSTRING (string
)->size
)
3731 item
= XVECTOR (items
)->contents
[i
];
3737 = Fcons (event
->frame_or_window
,
3739 Fcons (Fcons (event
->x
, event
->y
),
3740 Fcons (make_number (event
->timestamp
),
3743 return Fcons (item
, Fcons (position
, Qnil
));
3745 #endif /* not USE_X_TOOLKIT */
3747 window
= window_from_coordinates (f
, column
, row
, &part
);
3749 if (!WINDOWP (window
))
3751 window
= event
->frame_or_window
;
3756 int pixcolumn
, pixrow
;
3757 column
-= XINT (XWINDOW (window
)->left
);
3758 row
-= XINT (XWINDOW (window
)->top
);
3759 glyph_to_pixel_coords (f
, column
, row
, &pixcolumn
, &pixrow
);
3760 XSETINT (event
->x
, pixcolumn
);
3761 XSETINT (event
->y
, pixrow
);
3766 posn
= Qvertical_line
;
3769 buffer_posn_from_coords (XWINDOW (window
),
3776 Fcons (Fcons (event
->x
, event
->y
),
3777 Fcons (make_number (event
->timestamp
),
3783 Lisp_Object portion_whole
;
3786 window
= event
->frame_or_window
;
3787 portion_whole
= Fcons (event
->x
, event
->y
);
3788 part
= *scroll_bar_parts
[(int) event
->part
];
3792 Fcons (Qvertical_scroll_bar
,
3793 Fcons (portion_whole
,
3794 Fcons (make_number (event
->timestamp
),
3795 Fcons (part
, Qnil
)))));
3798 start_pos_ptr
= &XVECTOR (button_down_location
)->contents
[button
];
3800 start_pos
= *start_pos_ptr
;
3801 *start_pos_ptr
= Qnil
;
3803 is_double
= (button
== last_mouse_button
3804 && XINT (event
->x
) == last_mouse_x
3805 && XINT (event
->y
) == last_mouse_y
3806 && button_down_time
!= 0
3807 && (EQ (Vdouble_click_time
, Qt
)
3808 || (INTEGERP (Vdouble_click_time
)
3809 && ((int)(event
->timestamp
- button_down_time
)
3810 < XINT (Vdouble_click_time
)))));
3811 last_mouse_button
= button
;
3812 last_mouse_x
= XINT (event
->x
);
3813 last_mouse_y
= XINT (event
->y
);
3815 /* If this is a button press, squirrel away the location, so
3816 we can decide later whether it was a click or a drag. */
3817 if (event
->modifiers
& down_modifier
)
3821 double_click_count
++;
3822 event
->modifiers
|= ((double_click_count
> 2)
3827 double_click_count
= 1;
3828 button_down_time
= event
->timestamp
;
3829 *start_pos_ptr
= Fcopy_alist (position
);
3832 /* Now we're releasing a button - check the co-ordinates to
3833 see if this was a click or a drag. */
3834 else if (event
->modifiers
& up_modifier
)
3836 /* If we did not see a down before this up,
3837 ignore the up. Probably this happened because
3838 the down event chose a menu item.
3839 It would be an annoyance to treat the release
3840 of the button that chose the menu item
3841 as a separate event. */
3843 if (!CONSP (start_pos
))
3846 event
->modifiers
&= ~up_modifier
;
3847 #if 0 /* Formerly we treated an up with no down as a click event. */
3848 if (!CONSP (start_pos
))
3849 event
->modifiers
|= click_modifier
;
3853 /* The third element of every position should be the (x,y)
3857 down
= Fnth (make_number (2), start_pos
);
3858 if (EQ (event
->x
, XCONS (down
)->car
)
3859 && EQ (event
->y
, XCONS (down
)->cdr
))
3861 event
->modifiers
|= click_modifier
;
3865 button_down_time
= 0;
3866 event
->modifiers
|= drag_modifier
;
3868 /* Don't check is_double; treat this as multiple
3869 if the down-event was multiple. */
3870 if (double_click_count
> 1)
3871 event
->modifiers
|= ((double_click_count
> 2)
3877 /* Every mouse event should either have the down_modifier or
3878 the up_modifier set. */
3882 /* Get the symbol we should use for the mouse click. */
3885 head
= modify_event_symbol (button
,
3888 lispy_mouse_names
, &mouse_syms
,
3889 (sizeof (lispy_mouse_names
)
3890 / sizeof (lispy_mouse_names
[0])));
3891 if (event
->modifiers
& drag_modifier
)
3896 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
3899 Fcons (make_number (double_click_count
),
3909 case win32_scroll_bar_click
:
3911 int button
= event
->code
;
3913 Lisp_Object position
;
3914 Lisp_Object
*start_pos_ptr
;
3915 Lisp_Object start_pos
;
3917 if (button
< 0 || button
>= NUM_MOUSE_BUTTONS
)
3922 Lisp_Object portion_whole
;
3925 window
= event
->frame_or_window
;
3926 portion_whole
= Fcons (event
->x
, event
->y
);
3927 part
= *scroll_bar_parts
[(int) event
->part
];
3931 Fcons (Qvertical_scroll_bar
,
3932 Fcons (portion_whole
,
3933 Fcons (make_number (event
->timestamp
),
3934 Fcons (part
, Qnil
)))));
3937 /* Always treat Win32 scroll bar events as clicks. */
3938 event
->modifiers
|= click_modifier
;
3941 /* Get the symbol we should use for the mouse click. */
3944 head
= modify_event_symbol (button
,
3947 lispy_mouse_names
, &mouse_syms
,
3948 (sizeof (lispy_mouse_names
)
3949 / sizeof (lispy_mouse_names
[0])));
3957 #endif /* HAVE_MOUSE */
3959 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
3960 case menu_bar_event
:
3961 /* The event value is in the cdr of the frame_or_window slot. */
3962 if (!CONSP (event
->frame_or_window
))
3964 return XCONS (event
->frame_or_window
)->cdr
;
3967 /* The 'kind' field of the event is something we don't recognize. */
3976 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
3978 Lisp_Object bar_window
;
3979 enum scroll_bar_part part
;
3983 /* Is it a scroll bar movement? */
3984 if (frame
&& ! NILP (bar_window
))
3986 Lisp_Object part_sym
;
3988 part_sym
= *scroll_bar_parts
[(int) part
];
3989 return Fcons (Qscroll_bar_movement
,
3990 (Fcons (Fcons (bar_window
,
3991 Fcons (Qvertical_scroll_bar
,
3992 Fcons (Fcons (x
, y
),
3993 Fcons (make_number (time
),
3999 /* Or is it an ordinary mouse movement? */
4009 /* It's in a frame; which window on that frame? */
4010 pixel_to_glyph_coords (frame
, XINT (x
), XINT (y
), &column
, &row
,
4012 window
= window_from_coordinates (frame
, column
, row
, &area
);
4017 if (WINDOWP (window
))
4019 int pixcolumn
, pixrow
;
4020 column
-= XINT (XWINDOW (window
)->left
);
4021 row
-= XINT (XWINDOW (window
)->top
);
4022 glyph_to_pixel_coords (frame
, column
, row
, &pixcolumn
, &pixrow
);
4023 XSETINT (x
, pixcolumn
);
4024 XSETINT (y
, pixrow
);
4029 posn
= Qvertical_line
;
4032 buffer_posn_from_coords (XWINDOW (window
), column
, row
));
4034 else if (frame
!= 0)
4036 XSETFRAME (window
, frame
);
4047 return Fcons (Qmouse_movement
,
4048 Fcons (Fcons (window
,
4050 Fcons (Fcons (x
, y
),
4051 Fcons (make_number (time
),
4057 #endif /* HAVE_MOUSE */
4059 /* Construct a switch frame event. */
4061 make_lispy_switch_frame (frame
)
4064 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
4067 /* Manipulating modifiers. */
4069 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
4071 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
4072 SYMBOL's name of the end of the modifiers; the string from this
4073 position is the unmodified symbol name.
4075 This doesn't use any caches. */
4078 parse_modifiers_uncached (symbol
, modifier_end
)
4082 struct Lisp_String
*name
;
4086 CHECK_SYMBOL (symbol
, 1);
4089 name
= XSYMBOL (symbol
)->name
;
4091 for (i
= 0; i
+2 <= name
->size
; )
4093 int this_mod_end
= 0;
4096 /* See if the name continues with a modifier word.
4097 Check that the word appears, but don't check what follows it.
4098 Set this_mod and this_mod_end to record what we find. */
4100 switch (name
->data
[i
])
4102 #define SINGLE_LETTER_MOD(BIT) \
4103 (this_mod_end = i + 1, this_mod = BIT)
4106 SINGLE_LETTER_MOD (alt_modifier
);
4110 SINGLE_LETTER_MOD (ctrl_modifier
);
4114 SINGLE_LETTER_MOD (hyper_modifier
);
4118 SINGLE_LETTER_MOD (meta_modifier
);
4122 SINGLE_LETTER_MOD (shift_modifier
);
4126 SINGLE_LETTER_MOD (super_modifier
);
4129 #undef SINGLE_LETTER_MOD
4132 /* If we found no modifier, stop looking for them. */
4133 if (this_mod_end
== 0)
4136 /* Check there is a dash after the modifier, so that it
4137 really is a modifier. */
4138 if (this_mod_end
>= name
->size
|| name
->data
[this_mod_end
] != '-')
4141 /* This modifier is real; look for another. */
4142 modifiers
|= this_mod
;
4143 i
= this_mod_end
+ 1;
4146 /* Should we include the `click' modifier? */
4147 if (! (modifiers
& (down_modifier
| drag_modifier
4148 | double_modifier
| triple_modifier
))
4149 && i
+ 7 == name
->size
4150 && strncmp (name
->data
+ i
, "mouse-", 6) == 0
4151 && ('0' <= name
->data
[i
+ 6] && name
->data
[i
+ 6] <= '9'))
4152 modifiers
|= click_modifier
;
4160 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
4161 prepended to the string BASE[0..BASE_LEN-1].
4162 This doesn't use any caches. */
4164 apply_modifiers_uncached (modifiers
, base
, base_len
)
4169 /* Since BASE could contain nulls, we can't use intern here; we have
4170 to use Fintern, which expects a genuine Lisp_String, and keeps a
4173 (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
4179 /* Only the event queue may use the `up' modifier; it should always
4180 be turned into a click or drag event before presented to lisp code. */
4181 if (modifiers
& up_modifier
)
4184 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
4185 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
4186 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
4187 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
4188 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
4189 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
4190 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
4191 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
4192 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
4193 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
4194 /* The click modifier is denoted by the absence of other modifiers. */
4198 mod_len
= p
- new_mods
;
4202 Lisp_Object new_name
;
4204 new_name
= make_uninit_string (mod_len
+ base_len
);
4205 bcopy (new_mods
, XSTRING (new_name
)->data
, mod_len
);
4206 bcopy (base
, XSTRING (new_name
)->data
+ mod_len
, base_len
);
4208 return Fintern (new_name
, Qnil
);
4213 static char *modifier_names
[] =
4215 "up", "down", "drag", "click", "double", "triple", 0, 0,
4216 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4217 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
4219 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
4221 static Lisp_Object modifier_symbols
;
4223 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
4225 lispy_modifier_list (modifiers
)
4228 Lisp_Object modifier_list
;
4231 modifier_list
= Qnil
;
4232 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
4233 if (modifiers
& (1<<i
))
4234 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
4237 return modifier_list
;
4241 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
4242 where UNMODIFIED is the unmodified form of SYMBOL,
4243 MASK is the set of modifiers present in SYMBOL's name.
4244 This is similar to parse_modifiers_uncached, but uses the cache in
4245 SYMBOL's Qevent_symbol_element_mask property, and maintains the
4246 Qevent_symbol_elements property. */
4249 parse_modifiers (symbol
)
4252 Lisp_Object elements
;
4254 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
4255 if (CONSP (elements
))
4260 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
4261 Lisp_Object unmodified
;
4264 unmodified
= Fintern (make_string (XSYMBOL (symbol
)->name
->data
+ end
,
4265 XSYMBOL (symbol
)->name
->size
- end
),
4268 if (modifiers
& ~(((EMACS_INT
)1 << VALBITS
) - 1))
4270 XSETFASTINT (mask
, modifiers
);
4271 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
4273 /* Cache the parsing results on SYMBOL. */
4274 Fput (symbol
, Qevent_symbol_element_mask
,
4276 Fput (symbol
, Qevent_symbol_elements
,
4277 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
4279 /* Since we know that SYMBOL is modifiers applied to unmodified,
4280 it would be nice to put that in unmodified's cache.
4281 But we can't, since we're not sure that parse_modifiers is
4288 /* Apply the modifiers MODIFIERS to the symbol BASE.
4289 BASE must be unmodified.
4291 This is like apply_modifiers_uncached, but uses BASE's
4292 Qmodifier_cache property, if present. It also builds
4293 Qevent_symbol_elements properties, since it has that info anyway.
4295 apply_modifiers copies the value of BASE's Qevent_kind property to
4296 the modified symbol. */
4298 apply_modifiers (modifiers
, base
)
4302 Lisp_Object cache
, index
, entry
, new_symbol
;
4304 /* Mask out upper bits. We don't know where this value's been. */
4305 modifiers
&= ((EMACS_INT
)1 << VALBITS
) - 1;
4307 /* The click modifier never figures into cache indices. */
4308 cache
= Fget (base
, Qmodifier_cache
);
4309 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
4310 entry
= assq_no_quit (index
, cache
);
4313 new_symbol
= XCONS (entry
)->cdr
;
4316 /* We have to create the symbol ourselves. */
4317 new_symbol
= apply_modifiers_uncached (modifiers
,
4318 XSYMBOL (base
)->name
->data
,
4319 XSYMBOL (base
)->name
->size
);
4321 /* Add the new symbol to the base's cache. */
4322 entry
= Fcons (index
, new_symbol
);
4323 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
4325 /* We have the parsing info now for free, so add it to the caches. */
4326 XSETFASTINT (index
, modifiers
);
4327 Fput (new_symbol
, Qevent_symbol_element_mask
,
4328 Fcons (base
, Fcons (index
, Qnil
)));
4329 Fput (new_symbol
, Qevent_symbol_elements
,
4330 Fcons (base
, lispy_modifier_list (modifiers
)));
4333 /* Make sure this symbol is of the same kind as BASE.
4335 You'd think we could just set this once and for all when we
4336 intern the symbol above, but reorder_modifiers may call us when
4337 BASE's property isn't set right; we can't assume that just
4338 because it has a Qmodifier_cache property it must have its
4339 Qevent_kind set right as well. */
4340 if (NILP (Fget (new_symbol
, Qevent_kind
)))
4344 kind
= Fget (base
, Qevent_kind
);
4346 Fput (new_symbol
, Qevent_kind
, kind
);
4353 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
4354 return a symbol with the modifiers placed in the canonical order.
4355 Canonical order is alphabetical, except for down and drag, which
4356 always come last. The 'click' modifier is never written out.
4358 Fdefine_key calls this to make sure that (for example) C-M-foo
4359 and M-C-foo end up being equivalent in the keymap. */
4362 reorder_modifiers (symbol
)
4365 /* It's hopefully okay to write the code this way, since everything
4366 will soon be in caches, and no consing will be done at all. */
4369 parsed
= parse_modifiers (symbol
);
4370 return apply_modifiers ((int) XINT (XCONS (XCONS (parsed
)->cdr
)->car
),
4371 XCONS (parsed
)->car
);
4375 /* For handling events, we often want to produce a symbol whose name
4376 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
4377 to some base, like the name of a function key or mouse button.
4378 modify_event_symbol produces symbols of this sort.
4380 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
4381 is the name of the i'th symbol. TABLE_SIZE is the number of elements
4384 Alternatively, NAME_ALIST is an alist mapping codes into symbol names.
4385 NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used.
4387 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
4388 persist between calls to modify_event_symbol that it can use to
4389 store a cache of the symbols it's generated for this NAME_TABLE
4390 before. The object stored there may be a vector or an alist.
4392 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
4394 MODIFIERS is a set of modifier bits (as given in struct input_events)
4395 whose prefixes should be applied to the symbol name.
4397 SYMBOL_KIND is the value to be placed in the event_kind property of
4398 the returned symbol.
4400 The symbols we create are supposed to have an
4401 `event-symbol-elements' property, which lists the modifiers present
4402 in the symbol's name. */
4405 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist
,
4406 name_table
, symbol_table
, table_size
)
4409 Lisp_Object symbol_kind
;
4410 Lisp_Object name_alist
;
4412 Lisp_Object
*symbol_table
;
4413 unsigned int table_size
;
4416 Lisp_Object symbol_int
;
4418 /* Get rid of the "vendor-specific" bit here. */
4419 XSETINT (symbol_int
, symbol_num
& 0xffffff);
4421 /* Is this a request for a valid symbol? */
4422 if (symbol_num
< 0 || symbol_num
>= table_size
)
4425 if (CONSP (*symbol_table
))
4426 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
4428 /* If *symbol_table doesn't seem to be initialized properly, fix that.
4429 *symbol_table should be a lisp vector TABLE_SIZE elements long,
4430 where the Nth element is the symbol for NAME_TABLE[N], or nil if
4431 we've never used that symbol before. */
4434 if (! VECTORP (*symbol_table
)
4435 || XVECTOR (*symbol_table
)->size
!= table_size
)
4439 XSETFASTINT (size
, table_size
);
4440 *symbol_table
= Fmake_vector (size
, Qnil
);
4443 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
4446 /* Have we already used this symbol before? */
4449 /* No; let's create it. */
4450 if (!NILP (name_alist
))
4451 value
= Fcdr_safe (Fassq (symbol_int
, name_alist
));
4452 else if (name_table
[symbol_num
])
4453 value
= intern (name_table
[symbol_num
]);
4455 #ifdef HAVE_WINDOW_SYSTEM
4458 char *name
= x_get_keysym_name (symbol_num
);
4460 value
= intern (name
);
4467 sprintf (buf
, "key-%d", symbol_num
);
4468 value
= intern (buf
);
4471 if (CONSP (*symbol_table
))
4472 *symbol_table
= Fcons (Fcons (symbol_int
, value
), *symbol_table
);
4474 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
4476 /* Fill in the cache entries for this symbol; this also
4477 builds the Qevent_symbol_elements property, which the user
4479 apply_modifiers (modifiers
& click_modifier
, value
);
4480 Fput (value
, Qevent_kind
, symbol_kind
);
4483 /* Apply modifiers to that symbol. */
4484 return apply_modifiers (modifiers
, value
);
4487 /* Convert a list that represents an event type,
4488 such as (ctrl meta backspace), into the usual representation of that
4489 event type as a number or a symbol. */
4491 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
4492 "Convert the event description list EVENT-DESC to an event type.\n\
4493 EVENT-DESC should contain one base event type (a character or symbol)\n\
4494 and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\
4495 drag, down, double or triple). The base must be last.\n\
4496 The return value is an event type (a character or symbol) which\n\
4497 has the same base event type and all the specified modifiers.")
4499 Lisp_Object event_desc
;
4507 while (CONSP (rest
))
4512 elt
= XCONS (rest
)->car
;
4513 rest
= XCONS (rest
)->cdr
;
4515 /* Given a symbol, see if it is a modifier name. */
4516 if (SYMBOLP (elt
) && CONSP (rest
))
4517 this = parse_solitary_modifier (elt
);
4521 else if (!NILP (base
))
4522 error ("Two bases given in one event");
4528 /* Let the symbol A refer to the character A. */
4529 if (SYMBOLP (base
) && XSYMBOL (base
)->name
->size
== 1)
4530 XSETINT (base
, XSYMBOL (base
)->name
->data
[0]);
4532 if (INTEGERP (base
))
4534 /* Turn (shift a) into A. */
4535 if ((modifiers
& shift_modifier
) != 0
4536 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
4538 XSETINT (base
, XINT (base
) - ('a' - 'A'));
4539 modifiers
&= ~shift_modifier
;
4542 /* Turn (control a) into C-a. */
4543 if (modifiers
& ctrl_modifier
)
4544 return make_number ((modifiers
& ~ctrl_modifier
)
4545 | make_ctrl_char (XINT (base
)));
4547 return make_number (modifiers
| XINT (base
));
4549 else if (SYMBOLP (base
))
4550 return apply_modifiers (modifiers
, base
);
4552 error ("Invalid base event");
4555 /* Try to recognize SYMBOL as a modifier name.
4556 Return the modifier flag bit, or 0 if not recognized. */
4559 parse_solitary_modifier (symbol
)
4562 struct Lisp_String
*name
= XSYMBOL (symbol
)->name
;
4564 switch (name
->data
[0])
4566 #define SINGLE_LETTER_MOD(BIT) \
4567 if (name->size == 1) \
4570 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
4571 if (LEN == name->size \
4572 && ! strncmp (name->data, NAME, LEN)) \
4576 SINGLE_LETTER_MOD (alt_modifier
);
4580 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
4584 SINGLE_LETTER_MOD (ctrl_modifier
);
4588 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
4589 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
4593 SINGLE_LETTER_MOD (hyper_modifier
);
4597 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
4601 SINGLE_LETTER_MOD (meta_modifier
);
4605 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
4609 SINGLE_LETTER_MOD (shift_modifier
);
4613 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
4614 MULTI_LETTER_MOD (super_modifier
, "super", 5);
4615 SINGLE_LETTER_MOD (super_modifier
);
4619 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
4620 MULTI_LETTER_MOD (down_modifier
, "down", 4);
4621 MULTI_LETTER_MOD (double_modifier
, "double", 6);
4625 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
4628 #undef SINGLE_LETTER_MOD
4629 #undef MULTI_LETTER_MOD
4635 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
4636 Such a list is not valid as an event,
4637 but it can be a Lucid-style event type list. */
4640 lucid_event_type_list_p (object
)
4645 if (! CONSP (object
))
4648 for (tail
= object
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
4651 elt
= XCONS (tail
)->car
;
4652 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
4659 /* Store into *addr a value nonzero if terminal input chars are available.
4660 Serves the purpose of ioctl (0, FIONREAD, addr)
4661 but works even if FIONREAD does not exist.
4662 (In fact, this may actually read some input.)
4664 If DO_TIMERS_NOW is nonzero, actually run timer events that are ripe. */
4667 get_input_pending (addr
, do_timers_now
)
4671 /* First of all, have we already counted some input? */
4672 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4674 /* If input is being read as it arrives, and we have none, there is none. */
4675 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
4678 /* Try to read some input and see how much we get. */
4680 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4683 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
4686 gobble_input (expected
)
4691 if (interrupt_input
)
4694 mask
= sigblock (sigmask (SIGIO
));
4695 read_avail_input (expected
);
4699 #ifdef POLL_FOR_INPUT
4700 if (read_socket_hook
&& !interrupt_input
&& poll_suppress_count
== 0)
4703 mask
= sigblock (sigmask (SIGALRM
));
4704 read_avail_input (expected
);
4710 read_avail_input (expected
);
4714 /* Put a buffer_switch_event in the buffer
4715 so that read_key_sequence will notice the new current buffer. */
4717 record_asynch_buffer_change ()
4719 struct input_event event
;
4722 event
.kind
= buffer_switch_event
;
4723 event
.frame_or_window
= Qnil
;
4726 /* We don't need a buffer-switch event unless Emacs is waiting for input.
4727 The purpose of the event is to make read_key_sequence look up the
4728 keymaps again. If we aren't in read_key_sequence, we don't need one,
4729 and the event could cause trouble by messing up (input-pending-p). */
4730 tem
= Fwaiting_for_user_input_p ();
4734 /* We never need these events if we have no asynchronous subprocesses. */
4738 /* Make sure no interrupt happens while storing the event. */
4740 if (interrupt_input
)
4743 mask
= sigblock (sigmask (SIGIO
));
4744 kbd_buffer_store_event (&event
);
4751 kbd_buffer_store_event (&event
);
4758 /* Read any terminal input already buffered up by the system
4759 into the kbd_buffer, but do not wait.
4761 EXPECTED should be nonzero if the caller knows there is some input.
4763 Except on VMS, all input is read by this function.
4764 If interrupt_input is nonzero, this function MUST be called
4765 only when SIGIO is blocked.
4767 Returns the number of keyboard chars read, or -1 meaning
4768 this is a bad time to try to read input. */
4771 read_avail_input (expected
)
4774 struct input_event buf
[KBD_BUFFER_SIZE
];
4778 if (read_socket_hook
)
4779 /* No need for FIONREAD or fcntl; just say don't wait. */
4780 nread
= (*read_socket_hook
) (input_fd
, buf
, KBD_BUFFER_SIZE
,
4781 expected
, expected
);
4784 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
4785 the kbd_buffer can really hold. That may prevent loss
4786 of characters on some systems when input is stuffed at us. */
4787 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
4790 /* Determine how many characters we should *try* to read. */
4793 #else /* not WINDOWSNT */
4795 n_to_read
= dos_keysns ();
4798 #else /* not MSDOS */
4800 /* Find out how much input is available. */
4801 if (ioctl (input_fd
, FIONREAD
, &n_to_read
) < 0)
4802 /* Formerly simply reported no input, but that sometimes led to
4803 a failure of Emacs to terminate.
4804 SIGHUP seems appropriate if we can't reach the terminal. */
4805 /* ??? Is it really right to send the signal just to this process
4806 rather than to the whole process group?
4807 Perhaps on systems with FIONREAD Emacs is alone in its group. */
4808 kill (getpid (), SIGHUP
);
4811 if (n_to_read
> sizeof cbuf
)
4812 n_to_read
= sizeof cbuf
;
4813 #else /* no FIONREAD */
4814 #if defined (USG) || defined (DGUX)
4815 /* Read some input if available, but don't wait. */
4816 n_to_read
= sizeof cbuf
;
4817 fcntl (input_fd
, F_SETFL
, O_NDELAY
);
4822 #endif /* not MSDOS */
4823 #endif /* not WINDOWSNT */
4825 /* Now read; for one reason or another, this will not block.
4826 NREAD is set to the number of chars read. */
4830 cbuf
[0] = dos_keyread ();
4833 nread
= read (input_fd
, cbuf
, n_to_read
);
4835 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
4836 /* The kernel sometimes fails to deliver SIGHUP for ptys.
4837 This looks incorrect, but it isn't, because _BSD causes
4838 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
4839 and that causes a value other than 0 when there is no input. */
4845 /* We used to retry the read if it was interrupted.
4846 But this does the wrong thing when O_NDELAY causes
4847 an EAGAIN error. Does anybody know of a situation
4848 where a retry is actually needed? */
4850 nread
< 0 && (errno
== EAGAIN
4864 #if defined (USG) || defined (DGUX)
4865 fcntl (input_fd
, F_SETFL
, 0);
4866 #endif /* USG or DGUX */
4867 #endif /* no FIONREAD */
4868 for (i
= 0; i
< nread
; i
++)
4870 buf
[i
].kind
= ascii_keystroke
;
4871 buf
[i
].modifiers
= 0;
4872 if (meta_key
== 1 && (cbuf
[i
] & 0x80))
4873 buf
[i
].modifiers
= meta_modifier
;
4877 buf
[i
].code
= cbuf
[i
];
4878 XSETFRAME (buf
[i
].frame_or_window
, selected_frame
);
4882 /* Scan the chars for C-g and store them in kbd_buffer. */
4883 for (i
= 0; i
< nread
; i
++)
4885 kbd_buffer_store_event (&buf
[i
]);
4886 /* Don't look at input that follows a C-g too closely.
4887 This reduces lossage due to autorepeat on C-g. */
4888 if (buf
[i
].kind
== ascii_keystroke
4889 && buf
[i
].code
== quit_char
)
4895 #endif /* not VMS */
4897 #ifdef SIGIO /* for entire page */
4898 /* Note SIGIO has been undef'd if FIONREAD is missing. */
4901 input_available_signal (signo
)
4904 /* Must preserve main program's value of errno. */
4905 int old_errno
= errno
;
4907 extern int select_alarmed
;
4910 #if defined (USG) && !defined (POSIX_SIGNALS)
4911 /* USG systems forget handlers when they are used;
4912 must reestablish each time */
4913 signal (signo
, input_available_signal
);
4920 if (input_available_clear_time
)
4921 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
4926 nread
= read_avail_input (1);
4927 /* -1 means it's not ok to read the input now.
4928 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
4929 0 means there was no keyboard input available. */
4934 select_alarmed
= 1; /* Force the select emulator back to life */
4945 /* Send ourselves a SIGIO.
4947 This function exists so that the UNBLOCK_INPUT macro in
4948 blockinput.h can have some way to take care of input we put off
4949 dealing with, without assuming that every file which uses
4950 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
4952 reinvoke_input_signal ()
4955 kill (getpid (), SIGIO
);
4961 /* Return the prompt-string of a sparse keymap.
4962 This is the first element which is a string.
4963 Return nil if there is none. */
4971 register Lisp_Object tem
;
4980 static void menu_bar_item ();
4981 static void menu_bar_one_keymap ();
4983 /* These variables hold the vector under construction within
4984 menu_bar_items and its subroutines, and the current index
4985 for storing into that vector. */
4986 static Lisp_Object menu_bar_items_vector
;
4987 static int menu_bar_items_index
;
4989 /* Return a vector of menu items for a menu bar, appropriate
4990 to the current buffer. Each item has three elements in the vector:
4993 OLD is an old vector we can optionally reuse, or nil. */
4996 menu_bar_items (old
)
4999 /* The number of keymaps we're scanning right now, and the number of
5000 keymaps we have allocated space for. */
5003 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
5004 in the current keymaps, or nil where it is not a prefix. */
5007 Lisp_Object def
, tem
, tail
;
5016 struct gcpro gcpro1
;
5018 /* In order to build the menus, we need to call the keymap
5019 accessors. They all call QUIT. But this function is called
5020 during redisplay, during which a quit is fatal. So inhibit
5021 quitting while building the menus.
5022 We do this instead of specbind because (1) errors will clear it anyway
5023 and (2) this avoids risk of specpdl overflow. */
5024 oquit
= Vinhibit_quit
;
5028 menu_bar_items_vector
= old
;
5030 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
5031 menu_bar_items_index
= 0;
5033 GCPRO1 (menu_bar_items_vector
);
5035 /* Build our list of keymaps.
5036 If we recognize a function key and replace its escape sequence in
5037 keybuf with its symbol, or if the sequence starts with a mouse
5038 click and we need to switch buffers, we jump back here to rebuild
5039 the initial keymaps from the current buffer. */
5043 /* Should overriding-terminal-local-map and overriding-local-map apply? */
5044 if (!NILP (Voverriding_local_map_menu_flag
))
5046 /* Yes, use them (if non-nil) as well as the global map. */
5047 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
5049 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
5050 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
5051 if (!NILP (Voverriding_local_map
))
5052 maps
[nmaps
++] = Voverriding_local_map
;
5056 /* No, so use major and minor mode keymaps. */
5057 nmaps
= current_minor_maps (NULL
, &tmaps
);
5058 maps
= (Lisp_Object
*) alloca ((nmaps
+ 2) * sizeof (maps
[0]));
5059 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
5060 #ifdef USE_TEXT_PROPERTIES
5061 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
5063 maps
[nmaps
++] = current_buffer
->keymap
;
5066 maps
[nmaps
++] = current_global_map
;
5069 /* Look up in each map the dummy prefix key `menu-bar'. */
5073 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
5075 if (! NILP (maps
[mapno
]))
5076 def
= get_keyelt (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0));
5080 tem
= Fkeymapp (def
);
5082 menu_bar_one_keymap (def
);
5085 /* Move to the end those items that should be at the end. */
5087 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5090 int end
= menu_bar_items_index
;
5092 for (i
= 0; i
< end
; i
+= 4)
5093 if (EQ (XCONS (tail
)->car
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5095 Lisp_Object tem0
, tem1
, tem2
, tem3
;
5096 /* Move the item at index I to the end,
5097 shifting all the others forward. */
5098 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
5099 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
5100 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5101 tem3
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3];
5103 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
5104 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5105 (end
- i
- 4) * sizeof (Lisp_Object
));
5106 XVECTOR (menu_bar_items_vector
)->contents
[end
- 4] = tem0
;
5107 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem1
;
5108 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem2
;
5109 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem3
;
5114 /* Add nil, nil, nil, nil at the end. */
5115 i
= menu_bar_items_index
;
5116 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
5119 int newsize
= 2 * i
;
5120 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5121 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5122 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5123 menu_bar_items_vector
= tem
;
5125 /* Add this item. */
5126 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5127 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5128 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5129 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5130 menu_bar_items_index
= i
;
5132 Vinhibit_quit
= oquit
;
5134 return menu_bar_items_vector
;
5137 /* Scan one map KEYMAP, accumulating any menu items it defines
5138 in menu_bar_items_vector. */
5141 menu_bar_one_keymap (keymap
)
5144 Lisp_Object tail
, item
, key
, binding
, item_string
, table
;
5146 /* Loop over all keymap entries that have menu strings. */
5147 for (tail
= keymap
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5149 item
= XCONS (tail
)->car
;
5152 key
= XCONS (item
)->car
;
5153 binding
= XCONS (item
)->cdr
;
5154 if (CONSP (binding
))
5156 item_string
= XCONS (binding
)->car
;
5157 if (STRINGP (item_string
))
5158 menu_bar_item (key
, item_string
, Fcdr (binding
));
5160 else if (EQ (binding
, Qundefined
))
5161 menu_bar_item (key
, Qnil
, binding
);
5163 else if (VECTORP (item
))
5165 /* Loop over the char values represented in the vector. */
5166 int len
= XVECTOR (item
)->size
;
5168 for (c
= 0; c
< len
; c
++)
5170 Lisp_Object character
;
5171 XSETFASTINT (character
, c
);
5172 binding
= XVECTOR (item
)->contents
[c
];
5173 if (CONSP (binding
))
5175 item_string
= XCONS (binding
)->car
;
5176 if (STRINGP (item_string
))
5177 menu_bar_item (key
, item_string
, Fcdr (binding
));
5179 else if (EQ (binding
, Qundefined
))
5180 menu_bar_item (key
, Qnil
, binding
);
5186 /* This is used as the handler when calling internal_condition_case_1. */
5189 menu_bar_item_1 (arg
)
5195 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
5196 If there's already an item for KEY, add this DEF to it. */
5199 menu_bar_item (key
, item_string
, def
)
5200 Lisp_Object key
, item_string
, def
;
5203 Lisp_Object enabled
;
5206 /* Skip menu-bar equiv keys data. */
5207 if (CONSP (def
) && CONSP (XCONS (def
)->car
))
5208 def
= XCONS (def
)->cdr
;
5210 if (EQ (def
, Qundefined
))
5212 /* If a map has an explicit `undefined' as definition,
5213 discard any previously made menu bar item. */
5215 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
5216 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5218 if (menu_bar_items_index
> i
+ 4)
5219 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
5220 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5221 (menu_bar_items_index
- i
- 4) * sizeof (Lisp_Object
));
5222 menu_bar_items_index
-= 4;
5226 /* If there's no definition for this key yet,
5227 just ignore `undefined'. */
5231 /* See if this entry is enabled. */
5236 /* No property, or nil, means enable.
5237 Otherwise, enable if value is not nil. */
5238 tem
= Fget (def
, Qmenu_enable
);
5240 /* (condition-case nil (eval tem)
5242 enabled
= internal_condition_case_1 (Feval
, tem
, Qerror
,
5246 /* Ignore this item if it's not enabled. */
5250 /* Find any existing item for this KEY. */
5251 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
5252 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5255 /* If we did not find this KEY, add it at the end. */
5256 if (i
== menu_bar_items_index
)
5258 /* If vector is too small, get a bigger one. */
5259 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
5262 int newsize
= 2 * i
;
5263 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5264 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5265 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5266 menu_bar_items_vector
= tem
;
5268 /* Add this item. */
5269 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
5270 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = item_string
;
5271 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (def
, Qnil
);
5272 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = make_number (0);
5273 menu_bar_items_index
= i
;
5275 /* We did find an item for this KEY. Add DEF to its list of maps. */
5279 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5280 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = Fcons (def
, old
);
5284 /* Read a character using menus based on maps in the array MAPS.
5285 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
5286 Return t if we displayed a menu but the user rejected it.
5288 PREV_EVENT is the previous input event, or nil if we are reading
5289 the first event of a key sequence.
5291 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
5292 if we used a mouse menu to read the input, or zero otherwise. If
5293 USED_MOUSE_MENU is null, we don't dereference it.
5295 The prompting is done based on the prompt-string of the map
5296 and the strings associated with various map elements.
5298 This can be done with X menus or with menus put in the minibuf.
5299 These are done in different ways, depending on how the input will be read.
5300 Menus using X are done after auto-saving in read-char, getting the input
5301 event from Fx_popup_menu; menus using the minibuf use read_char recursively
5302 and do auto-saving in the inner call of read_char. */
5305 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
5308 Lisp_Object prev_event
;
5309 int *used_mouse_menu
;
5312 register Lisp_Object name
;
5313 Lisp_Object rest
, vector
;
5315 if (used_mouse_menu
)
5316 *used_mouse_menu
= 0;
5318 /* Use local over global Menu maps */
5320 if (! menu_prompting
)
5323 /* Optionally disregard all but the global map. */
5324 if (inhibit_local_menu_bar_menus
)
5326 maps
+= (nmaps
- 1);
5330 /* Get the menu name from the first map that has one (a prompt string). */
5331 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5333 name
= map_prompt (maps
[mapno
]);
5338 /* If we don't have any menus, just read a character normally. */
5343 /* If we got to this point via a mouse click,
5344 use a real menu for mouse selection. */
5345 if (EVENT_HAS_PARAMETERS (prev_event
)
5346 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
))
5348 /* Display the menu and get the selection. */
5349 Lisp_Object
*realmaps
5350 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
5354 /* Use the maps that are not nil. */
5355 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5356 if (!NILP (maps
[mapno
]))
5357 realmaps
[nmaps1
++] = maps
[mapno
];
5359 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
5364 /* If we got multiple events, unread all but
5366 There is no way to prevent those unread events
5367 from showing up later in last_nonmenu_event.
5368 So turn symbol and integer events into lists,
5369 to indicate that they came from a mouse menu,
5370 so that when present in last_nonmenu_event
5371 they won't confuse things. */
5372 for (tem
= XCONS (value
)->cdr
; !NILP (tem
);
5373 tem
= XCONS (tem
)->cdr
)
5374 if (SYMBOLP (XCONS (tem
)->car
)
5375 || INTEGERP (XCONS (tem
)->car
))
5377 = Fcons (XCONS (tem
)->car
, Qnil
);
5379 /* If we got more than one event, put all but the first
5380 onto this list to be read later.
5381 Return just the first event now. */
5382 Vunread_command_events
5383 = nconc2 (XCONS (value
)->cdr
, Vunread_command_events
);
5384 value
= XCONS (value
)->car
;
5386 else if (NILP (value
))
5388 if (used_mouse_menu
)
5389 *used_mouse_menu
= 1;
5392 #endif /* HAVE_MENUS */
5396 /* Buffer in use so far for the minibuf prompts for menu keymaps.
5397 We make this bigger when necessary, and never free it. */
5398 static char *read_char_minibuf_menu_text
;
5399 /* Size of that buffer. */
5400 static int read_char_minibuf_menu_width
;
5403 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
5409 register Lisp_Object name
;
5411 int width
= FRAME_WIDTH (selected_frame
) - 4;
5414 Lisp_Object rest
, vector
;
5417 if (! menu_prompting
)
5420 /* Make sure we have a big enough buffer for the menu text. */
5421 if (read_char_minibuf_menu_text
== 0)
5423 read_char_minibuf_menu_width
= width
+ 4;
5424 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
5426 else if (width
+ 4 > read_char_minibuf_menu_width
)
5428 read_char_minibuf_menu_width
= width
+ 4;
5429 read_char_minibuf_menu_text
5430 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
5432 menu
= read_char_minibuf_menu_text
;
5434 /* Get the menu name from the first map that has one (a prompt string). */
5435 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5437 name
= map_prompt (maps
[mapno
]);
5442 /* If we don't have any menus, just read a character normally. */
5446 /* Prompt string always starts with map's prompt, and a space. */
5447 strcpy (menu
, XSTRING (name
)->data
);
5448 nlength
= XSTRING (name
)->size
;
5449 menu
[nlength
++] = ':';
5450 menu
[nlength
++] = ' ';
5453 /* Start prompting at start of first map. */
5457 /* Present the documented bindings, a line at a time. */
5464 Lisp_Object orig_defn_macro
;
5466 /* Loop over elements of map. */
5471 /* If reached end of map, start at beginning of next map. */
5475 /* At end of last map, wrap around to first map if just starting,
5476 or end this line if already have something on it. */
5480 if (notfirst
|| nobindings
) break;
5485 /* Look at the next element of the map. */
5487 elt
= XVECTOR (vector
)->contents
[idx
];
5489 elt
= Fcar_safe (rest
);
5491 if (idx
< 0 && VECTORP (elt
))
5493 /* If we found a dense table in the keymap,
5494 advanced past it, but start scanning its contents. */
5495 rest
= Fcdr_safe (rest
);
5501 /* An ordinary element. */
5506 s
= Fcar_safe (Fcdr_safe (elt
)); /* alist */
5507 event
= Fcar_safe (elt
);
5511 s
= Fcar_safe (elt
); /* vector */
5512 XSETINT (event
, idx
);
5515 /* Ignore the element if it has no prompt string. */
5516 if (STRINGP (s
) && INTEGERP (event
))
5518 /* 1 if the char to type matches the string. */
5520 Lisp_Object upcased_event
, downcased_event
;
5523 upcased_event
= Fupcase (event
);
5524 downcased_event
= Fdowncase (event
);
5525 char_matches
= (XINT (upcased_event
) == XSTRING (s
)->data
[0]
5526 || XINT (downcased_event
) == XSTRING (s
)->data
[0]);
5528 desc
= Fsingle_key_description (event
);
5530 /* If we have room for the prompt string, add it to this line.
5531 If this is the first on the line, always add it. */
5532 if ((XSTRING (s
)->size
+ i
+ 2
5533 + (char_matches
? 0 : XSTRING (desc
)->size
+ 3))
5539 /* Punctuate between strings. */
5542 strcpy (menu
+ i
, ", ");
5548 /* If the char to type doesn't match the string's
5549 first char, explicitly show what char to type. */
5552 /* Add as much of string as fits. */
5553 thiswidth
= XSTRING (desc
)->size
;
5554 if (thiswidth
+ i
> width
)
5555 thiswidth
= width
- i
;
5556 bcopy (XSTRING (desc
)->data
, menu
+ i
, thiswidth
);
5558 strcpy (menu
+ i
, " = ");
5562 /* Add as much of string as fits. */
5563 thiswidth
= XSTRING (s
)->size
;
5564 if (thiswidth
+ i
> width
)
5565 thiswidth
= width
- i
;
5566 bcopy (XSTRING (s
)->data
, menu
+ i
, thiswidth
);
5572 /* If this element does not fit, end the line now,
5573 and save the element for the next line. */
5574 strcpy (menu
+ i
, "...");
5579 /* Move past this element. */
5580 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
5581 /* Handle reaching end of dense table. */
5586 rest
= Fcdr_safe (rest
);
5590 /* Prompt with that and read response. */
5593 /* Make believe its not a keyboard macro in case the help char
5594 is pressed. Help characters are not recorded because menu prompting
5595 is not used on replay.
5597 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
5598 current_kboard
->defining_kbd_macro
= Qnil
;
5600 obj
= read_char (commandflag
, 0, 0, Qnil
, 0);
5601 while (BUFFERP (obj
));
5602 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
5604 if (!INTEGERP (obj
))
5609 if (! EQ (obj
, menu_prompt_more_char
)
5610 && (!INTEGERP (menu_prompt_more_char
)
5611 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
5613 if (!NILP (current_kboard
->defining_kbd_macro
))
5614 store_kbd_macro_char (obj
);
5617 /* Help char - go round again */
5621 /* Reading key sequences. */
5623 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
5624 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
5625 keymap, or nil otherwise. Return the index of the first keymap in
5626 which KEY has any binding, or NMAPS if no map has a binding.
5628 If KEY is a meta ASCII character, treat it like meta-prefix-char
5629 followed by the corresponding non-meta character. Keymaps in
5630 CURRENT with non-prefix bindings for meta-prefix-char become nil in
5633 If KEY has no bindings in any of the CURRENT maps, NEXT is left
5636 NEXT may be the same array as CURRENT. */
5639 follow_key (key
, nmaps
, current
, defs
, next
)
5641 Lisp_Object
*current
, *defs
, *next
;
5644 int i
, first_binding
;
5647 /* If KEY is a meta ASCII character, treat it like meta-prefix-char
5648 followed by the corresponding non-meta character.
5649 Put the results into DEFS, since we are going to alter that anyway.
5650 Do not alter CURRENT or NEXT. */
5651 if (INTEGERP (key
) && (XINT (key
) & CHAR_META
))
5653 for (i
= 0; i
< nmaps
; i
++)
5654 if (! NILP (current
[i
]))
5657 def
= get_keyelt (access_keymap (current
[i
],
5658 meta_prefix_char
, 1, 0));
5660 /* Note that since we pass the resulting bindings through
5661 get_keymap_1, non-prefix bindings for meta-prefix-char
5663 defs
[i
] = get_keymap_1 (def
, 0, 1);
5669 XSETINT (key
, XFASTINT (key
) & ~CHAR_META
);
5672 first_binding
= nmaps
;
5673 for (i
= nmaps
- 1; i
>= 0; i
--)
5675 if (! NILP (current
[i
]))
5683 defs
[i
] = get_keyelt (access_keymap (map
, key
, 1, 0));
5684 if (! NILP (defs
[i
]))
5691 /* Given the set of bindings we've found, produce the next set of maps. */
5692 if (first_binding
< nmaps
)
5693 for (i
= 0; i
< nmaps
; i
++)
5694 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap_1 (defs
[i
], 0, 1);
5696 return first_binding
;
5699 /* Read a sequence of keys that ends with a non prefix character,
5700 storing it in KEYBUF, a buffer of size BUFSIZE.
5702 Return the length of the key sequence stored.
5703 Return -1 if the user rejected a command menu.
5705 Echo starting immediately unless `prompt' is 0.
5707 Where a key sequence ends depends on the currently active keymaps.
5708 These include any minor mode keymaps active in the current buffer,
5709 the current buffer's local map, and the global map.
5711 If a key sequence has no other bindings, we check Vfunction_key_map
5712 to see if some trailing subsequence might be the beginning of a
5713 function key's sequence. If so, we try to read the whole function
5714 key, and substitute its symbolic name into the key sequence.
5716 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
5717 `double-' events into similar click events, if that would make them
5718 bound. We try to turn `triple-' events first into `double-' events,
5721 If we get a mouse click in a mode line, vertical divider, or other
5722 non-text area, we treat the click as if it were prefixed by the
5723 symbol denoting that area - `mode-line', `vertical-line', or
5726 If the sequence starts with a mouse click, we read the key sequence
5727 with respect to the buffer clicked on, not the current buffer.
5729 If the user switches frames in the midst of a key sequence, we put
5730 off the switch-frame event until later; the next call to
5731 read_char will return it. */
5734 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
5735 can_return_switch_frame
)
5736 Lisp_Object
*keybuf
;
5739 int dont_downcase_last
;
5740 int can_return_switch_frame
;
5742 int count
= specpdl_ptr
- specpdl
;
5744 /* How many keys there are in the current key sequence. */
5747 /* The length of the echo buffer when we started reading, and
5748 the length of this_command_keys when we started reading. */
5752 /* The number of keymaps we're scanning right now, and the number of
5753 keymaps we have allocated space for. */
5755 int nmaps_allocated
= 0;
5757 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
5758 the current keymaps. */
5761 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
5762 in the current keymaps, or nil where it is not a prefix. */
5763 Lisp_Object
*submaps
;
5765 /* The local map to start out with at start of key sequence. */
5766 Lisp_Object orig_local_map
;
5768 /* 1 if we have already considered switching to the local-map property
5769 of the place where a mouse click occurred. */
5770 int localized_local_map
= 0;
5772 /* The index in defs[] of the first keymap that has a binding for
5773 this key sequence. In other words, the lowest i such that
5774 defs[i] is non-nil. */
5777 /* If t < mock_input, then KEYBUF[t] should be read as the next
5780 We use this to recover after recognizing a function key. Once we
5781 realize that a suffix of the current key sequence is actually a
5782 function key's escape sequence, we replace the suffix with the
5783 function key's binding from Vfunction_key_map. Now keybuf
5784 contains a new and different key sequence, so the echo area,
5785 this_command_keys, and the submaps and defs arrays are wrong. In
5786 this situation, we set mock_input to t, set t to 0, and jump to
5787 restart_sequence; the loop will read keys from keybuf up until
5788 mock_input, thus rebuilding the state; and then it will resume
5789 reading characters from the keyboard. */
5792 /* If the sequence is unbound in submaps[], then
5793 keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map,
5794 and fkey_map is its binding.
5796 These might be > t, indicating that all function key scanning
5797 should hold off until t reaches them. We do this when we've just
5798 recognized a function key, to avoid searching for the function
5799 key's again in Vfunction_key_map. */
5800 int fkey_start
= 0, fkey_end
= 0;
5801 Lisp_Object fkey_map
;
5803 /* Likewise, for key_translation_map. */
5804 int keytran_start
= 0, keytran_end
= 0;
5805 Lisp_Object keytran_map
;
5807 /* If we receive a ``switch-frame'' event in the middle of a key sequence,
5808 we put it off for later. While we're reading, we keep the event here. */
5809 Lisp_Object delayed_switch_frame
;
5811 /* See the comment below... */
5812 #if defined (GOBBLE_FIRST_EVENT)
5813 Lisp_Object first_event
;
5816 Lisp_Object original_uppercase
;
5817 int original_uppercase_position
= -1;
5819 /* Gets around Microsoft compiler limitations. */
5822 struct buffer
*starting_buffer
;
5824 /* Nonzero if we seem to have got the beginning of a binding
5825 in function_key_map. */
5826 int function_key_possible
= 0;
5827 int key_translation_possible
= 0;
5829 /* Save the status of key translation before each step,
5830 so that we can restore this after downcasing. */
5831 Lisp_Object prev_fkey_map
;
5832 Lisp_Object prev_fkey_start
;
5833 Lisp_Object prev_fkey_end
;
5835 Lisp_Object prev_keytran_map
;
5836 Lisp_Object prev_keytran_start
;
5837 Lisp_Object prev_keytran_end
;
5841 last_nonmenu_event
= Qnil
;
5843 delayed_switch_frame
= Qnil
;
5844 fkey_map
= Vfunction_key_map
;
5845 keytran_map
= Vkey_translation_map
;
5847 /* If there is no function-key-map, turn off function key scanning. */
5848 if (NILP (Fkeymapp (Vfunction_key_map
)))
5849 fkey_start
= fkey_end
= bufsize
+ 1;
5851 /* If there is no key-translation-map, turn off scanning. */
5852 if (NILP (Fkeymapp (Vkey_translation_map
)))
5853 keytran_start
= keytran_end
= bufsize
+ 1;
5858 echo_prompt (XSTRING (prompt
)->data
);
5859 else if (cursor_in_echo_area
&& echo_keystrokes
)
5860 /* This doesn't put in a dash if the echo buffer is empty, so
5861 you don't always see a dash hanging out in the minibuffer. */
5865 /* Record the initial state of the echo area and this_command_keys;
5866 we will need to restore them if we replay a key sequence. */
5868 echo_start
= echo_length ();
5869 keys_start
= this_command_key_count
;
5870 this_single_command_key_start
= keys_start
;
5872 #if defined (GOBBLE_FIRST_EVENT)
5873 /* This doesn't quite work, because some of the things that read_char
5874 does cannot safely be bypassed. It seems too risky to try to make
5877 /* Read the first char of the sequence specially, before setting
5878 up any keymaps, in case a filter runs and switches buffers on us. */
5879 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
5881 #endif /* GOBBLE_FIRST_EVENT */
5883 orig_local_map
= get_local_map (PT
, current_buffer
);
5885 /* We jump here when the key sequence has been thoroughly changed, and
5886 we need to rescan it starting from the beginning. When we jump here,
5887 keybuf[0..mock_input] holds the sequence we should reread. */
5890 starting_buffer
= current_buffer
;
5891 function_key_possible
= 0;
5892 key_translation_possible
= 0;
5894 /* Build our list of keymaps.
5895 If we recognize a function key and replace its escape sequence in
5896 keybuf with its symbol, or if the sequence starts with a mouse
5897 click and we need to switch buffers, we jump back here to rebuild
5898 the initial keymaps from the current buffer. */
5902 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
5903 || !NILP (Voverriding_local_map
))
5905 if (3 > nmaps_allocated
)
5907 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
5908 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
5909 nmaps_allocated
= 3;
5912 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
5913 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
5914 if (!NILP (Voverriding_local_map
))
5915 submaps
[nmaps
++] = Voverriding_local_map
;
5919 nmaps
= current_minor_maps (0, &maps
);
5920 if (nmaps
+ 2 > nmaps_allocated
)
5922 submaps
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (submaps
[0]));
5923 defs
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (defs
[0]));
5924 nmaps_allocated
= nmaps
+ 2;
5926 bcopy (maps
, submaps
, nmaps
* sizeof (submaps
[0]));
5927 #ifdef USE_TEXT_PROPERTIES
5928 submaps
[nmaps
++] = orig_local_map
;
5930 submaps
[nmaps
++] = current_buffer
->keymap
;
5933 submaps
[nmaps
++] = current_global_map
;
5936 /* Find an accurate initial value for first_binding. */
5937 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
5938 if (! NILP (submaps
[first_binding
]))
5941 /* Start from the beginning in keybuf. */
5944 /* These are no-ops the first time through, but if we restart, they
5945 revert the echo area and this_command_keys to their original state. */
5946 this_command_key_count
= keys_start
;
5947 if (INTERACTIVE
&& t
< mock_input
)
5948 echo_truncate (echo_start
);
5950 /* If the best binding for the current key sequence is a keymap, or
5951 we may be looking at a function key's escape sequence, keep on
5953 while ((first_binding
< nmaps
&& ! NILP (submaps
[first_binding
]))
5954 || (first_binding
>= nmaps
5956 /* mock input is never part of a function key's sequence. */
5957 && mock_input
<= fkey_start
)
5958 || (first_binding
>= nmaps
5959 && keytran_start
< t
&& key_translation_possible
)
5960 /* Don't return in the middle of a possible function key sequence,
5961 if the only bindings we found were via case conversion.
5962 Thus, if ESC O a has a function-key-map translation
5963 and ESC o has a binding, don't return after ESC O,
5964 so that we can translate ESC O plus the next character. */
5968 int used_mouse_menu
= 0;
5970 /* Where the last real key started. If we need to throw away a
5971 key that has expanded into more than one element of keybuf
5972 (say, a mouse click on the mode line which is being treated
5973 as [mode-line (mouse-...)], then we backtrack to this point
5975 int last_real_key_start
;
5977 /* These variables are analogous to echo_start and keys_start;
5978 while those allow us to restart the entire key sequence,
5979 echo_local_start and keys_local_start allow us to throw away
5981 int echo_local_start
, keys_local_start
, local_first_binding
;
5984 error ("Key sequence too long");
5987 echo_local_start
= echo_length ();
5988 keys_local_start
= this_command_key_count
;
5989 local_first_binding
= first_binding
;
5992 /* These are no-ops, unless we throw away a keystroke below and
5993 jumped back up to replay_key; in that case, these restore the
5994 variables to their original state, allowing us to replay the
5996 if (INTERACTIVE
&& t
< mock_input
)
5997 echo_truncate (echo_local_start
);
5998 this_command_key_count
= keys_local_start
;
5999 first_binding
= local_first_binding
;
6001 /* By default, assume each event is "real". */
6002 last_real_key_start
= t
;
6004 /* Does mock_input indicate that we are re-reading a key sequence? */
6008 add_command_key (key
);
6009 if (echo_keystrokes
)
6013 /* If not, we should actually read a character. */
6016 struct buffer
*buf
= current_buffer
;
6020 KBOARD
*interrupted_kboard
= current_kboard
;
6021 struct frame
*interrupted_frame
= selected_frame
;
6022 if (setjmp (wrong_kboard_jmpbuf
))
6024 if (!NILP (delayed_switch_frame
))
6026 interrupted_kboard
->kbd_queue
6027 = Fcons (delayed_switch_frame
,
6028 interrupted_kboard
->kbd_queue
);
6029 delayed_switch_frame
= Qnil
;
6032 interrupted_kboard
->kbd_queue
6033 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
6035 /* If the side queue is non-empty, ensure it begins with a
6036 switch-frame, so we'll replay it in the right context. */
6037 if (CONSP (interrupted_kboard
->kbd_queue
)
6038 && (key
= XCONS (interrupted_kboard
->kbd_queue
)->car
,
6039 !(EVENT_HAS_PARAMETERS (key
)
6040 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
6044 XSETFRAME (frame
, interrupted_frame
);
6045 interrupted_kboard
->kbd_queue
6046 = Fcons (make_lispy_switch_frame (frame
),
6047 interrupted_kboard
->kbd_queue
);
6050 orig_local_map
= get_local_map (PT
, current_buffer
);
6051 goto replay_sequence
;
6054 key
= read_char (NILP (prompt
), nmaps
, submaps
, last_nonmenu_event
,
6058 /* read_char returns t when it shows a menu and the user rejects it.
6063 /* read_char returns -1 at the end of a macro.
6064 Emacs 18 handles this by returning immediately with a
6065 zero, so that's what we'll do. */
6066 if (INTEGERP (key
) && XINT (key
) == -1)
6069 /* The Microsoft C compiler can't handle the goto that
6075 /* If the current buffer has been changed from under us, the
6076 keymap may have changed, so replay the sequence. */
6080 orig_local_map
= get_local_map (PT
, current_buffer
);
6081 goto replay_sequence
;
6084 /* If we have a quit that was typed in another frame, and
6085 quit_throw_to_read_char switched buffers,
6086 replay to get the right keymap. */
6087 if (XINT (key
) == quit_char
&& current_buffer
!= starting_buffer
)
6092 orig_local_map
= get_local_map (PT
, current_buffer
);
6093 goto replay_sequence
;
6099 /* Clicks in non-text areas get prefixed by the symbol
6100 in their CHAR-ADDRESS field. For example, a click on
6101 the mode line is prefixed by the symbol `mode-line'.
6103 Furthermore, key sequences beginning with mouse clicks
6104 are read using the keymaps of the buffer clicked on, not
6105 the current buffer. So we may have to switch the buffer
6108 When we turn one event into two events, we must make sure
6109 that neither of the two looks like the original--so that,
6110 if we replay the events, they won't be expanded again.
6111 If not for this, such reexpansion could happen either here
6112 or when user programs play with this-command-keys. */
6113 if (EVENT_HAS_PARAMETERS (key
))
6117 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
6118 if (EQ (kind
, Qmouse_click
))
6120 Lisp_Object window
, posn
;
6122 window
= POSN_WINDOW (EVENT_START (key
));
6123 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6126 /* We're looking at the second event of a
6127 sequence which we expanded before. Set
6128 last_real_key_start appropriately. */
6130 last_real_key_start
= t
- 1;
6133 /* Key sequences beginning with mouse clicks are
6134 read using the keymaps in the buffer clicked on,
6135 not the current buffer. If we're at the
6136 beginning of a key sequence, switch buffers. */
6137 if (last_real_key_start
== 0
6139 && BUFFERP (XWINDOW (window
)->buffer
)
6140 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
6145 /* Arrange to go back to the original buffer once we're
6146 done reading the key sequence. Note that we can't
6147 use save_excursion_{save,restore} here, because they
6148 save point as well as the current buffer; we don't
6149 want to save point, because redisplay may change it,
6150 to accommodate a Fset_window_start or something. We
6151 don't want to do this at the top of the function,
6152 because we may get input from a subprocess which
6153 wants to change the selected window and stuff (say,
6155 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
6157 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
6158 orig_local_map
= get_local_map (PT
, current_buffer
);
6159 goto replay_sequence
;
6161 /* For a mouse click, get the local text-property keymap
6162 of the place clicked on, rather than point. */
6163 if (last_real_key_start
== 0 && CONSP (XCONS (key
)->cdr
)
6164 && ! localized_local_map
)
6166 Lisp_Object map_here
, start
, pos
;
6168 localized_local_map
= 1;
6169 start
= EVENT_START (key
);
6170 if (CONSP (start
) && CONSP (XCONS (start
)->cdr
))
6172 pos
= POSN_BUFFER_POSN (start
);
6174 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
6176 map_here
= get_local_map (XINT (pos
), current_buffer
);
6177 if (!EQ (map_here
, orig_local_map
))
6179 orig_local_map
= map_here
;
6183 goto replay_sequence
;
6189 /* Expand mode-line and scroll-bar events into two events:
6190 use posn as a fake prefix key. */
6193 if (t
+ 1 >= bufsize
)
6194 error ("Key sequence too long");
6199 /* Zap the position in key, so we know that we've
6200 expanded it, and don't try to do so again. */
6201 POSN_BUFFER_POSN (EVENT_START (key
))
6202 = Fcons (posn
, Qnil
);
6206 else if (EQ (kind
, Qswitch_frame
))
6208 /* If we're at the beginning of a key sequence, and the caller
6209 says it's okay, go ahead and return this event. If we're
6210 in the midst of a key sequence, delay it until the end. */
6211 if (t
> 0 || !can_return_switch_frame
)
6213 delayed_switch_frame
= key
;
6217 else if (CONSP (XCONS (key
)->cdr
)
6218 && CONSP (EVENT_START (key
))
6219 && CONSP (XCONS (EVENT_START (key
))->cdr
))
6223 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6224 /* Handle menu-bar events:
6225 insert the dummy prefix event `menu-bar'. */
6226 if (EQ (posn
, Qmenu_bar
))
6228 if (t
+ 1 >= bufsize
)
6229 error ("Key sequence too long");
6233 /* Zap the position in key, so we know that we've
6234 expanded it, and don't try to do so again. */
6235 POSN_BUFFER_POSN (EVENT_START (key
))
6236 = Fcons (posn
, Qnil
);
6239 goto replay_sequence
;
6241 else if (CONSP (posn
))
6243 /* We're looking at the second event of a
6244 sequence which we expanded before. Set
6245 last_real_key_start appropriately. */
6246 if (last_real_key_start
== t
&& t
> 0)
6247 last_real_key_start
= t
- 1;
6252 /* We have finally decided that KEY is something we might want
6254 first_binding
= (follow_key (key
,
6255 nmaps
- first_binding
,
6256 submaps
+ first_binding
,
6257 defs
+ first_binding
,
6258 submaps
+ first_binding
)
6261 /* If KEY wasn't bound, we'll try some fallbacks. */
6262 if (first_binding
>= nmaps
)
6266 head
= EVENT_HEAD (key
);
6267 if (help_char_p (head
) && t
> 0)
6269 read_key_sequence_cmd
= Vprefix_help_command
;
6271 last_nonmenu_event
= key
;
6272 /* The Microsoft C compiler can't handle the goto that
6280 Lisp_Object breakdown
;
6283 breakdown
= parse_modifiers (head
);
6284 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6285 /* Attempt to reduce an unbound mouse event to a simpler
6286 event that is bound:
6287 Drags reduce to clicks.
6288 Double-clicks reduce to clicks.
6289 Triple-clicks reduce to double-clicks, then to clicks.
6290 Down-clicks are eliminated.
6291 Double-downs reduce to downs, then are eliminated.
6292 Triple-downs reduce to double-downs, then to downs,
6293 then are eliminated. */
6294 if (modifiers
& (down_modifier
| drag_modifier
6295 | double_modifier
| triple_modifier
))
6297 while (modifiers
& (down_modifier
| drag_modifier
6298 | double_modifier
| triple_modifier
))
6300 Lisp_Object new_head
, new_click
;
6301 if (modifiers
& triple_modifier
)
6302 modifiers
^= (double_modifier
| triple_modifier
);
6303 else if (modifiers
& double_modifier
)
6304 modifiers
&= ~double_modifier
;
6305 else if (modifiers
& drag_modifier
)
6306 modifiers
&= ~drag_modifier
;
6309 /* Dispose of this `down' event by simply jumping
6310 back to replay_key, to get another event.
6312 Note that if this event came from mock input,
6313 then just jumping back to replay_key will just
6314 hand it to us again. So we have to wipe out any
6317 We could delete keybuf[t] and shift everything
6318 after that to the left by one spot, but we'd also
6319 have to fix up any variable that points into
6320 keybuf, and shifting isn't really necessary
6323 Adding prefixes for non-textual mouse clicks
6324 creates two characters of mock input, and both
6325 must be thrown away. If we're only looking at
6326 the prefix now, we can just jump back to
6327 replay_key. On the other hand, if we've already
6328 processed the prefix, and now the actual click
6329 itself is giving us trouble, then we've lost the
6330 state of the keymaps we want to backtrack to, and
6331 we need to replay the whole sequence to rebuild
6334 Beyond that, only function key expansion could
6335 create more than two keys, but that should never
6336 generate mouse events, so it's okay to zero
6337 mock_input in that case too.
6339 Isn't this just the most wonderful code ever? */
6340 if (t
== last_real_key_start
)
6347 mock_input
= last_real_key_start
;
6348 goto replay_sequence
;
6353 = apply_modifiers (modifiers
, XCONS (breakdown
)->car
);
6355 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
6357 /* Look for a binding for this new key. follow_key
6358 promises that it didn't munge submaps the
6359 last time we called it, since key was unbound. */
6361 = (follow_key (new_click
,
6362 nmaps
- local_first_binding
,
6363 submaps
+ local_first_binding
,
6364 defs
+ local_first_binding
,
6365 submaps
+ local_first_binding
)
6366 + local_first_binding
);
6368 /* If that click is bound, go for it. */
6369 if (first_binding
< nmaps
)
6374 /* Otherwise, we'll leave key set to the drag event. */
6381 /* Normally, last_nonmenu_event gets the previous key we read.
6382 But when a mouse popup menu is being used,
6383 we don't update last_nonmenu_event; it continues to hold the mouse
6384 event that preceded the first level of menu. */
6385 if (!used_mouse_menu
)
6386 last_nonmenu_event
= key
;
6388 /* Record what part of this_command_keys is the current key sequence. */
6389 this_single_command_key_start
= this_command_key_count
- t
;
6391 prev_fkey_map
= fkey_map
;
6392 prev_fkey_start
= fkey_start
;
6393 prev_fkey_end
= fkey_end
;
6395 prev_keytran_map
= keytran_map
;
6396 prev_keytran_start
= keytran_start
;
6397 prev_keytran_end
= keytran_end
;
6399 /* If the sequence is unbound, see if we can hang a function key
6400 off the end of it. We only want to scan real keyboard input
6401 for function key sequences, so if mock_input says that we're
6402 re-reading old events, don't examine it. */
6403 if (first_binding
>= nmaps
6406 Lisp_Object fkey_next
;
6408 /* Continue scan from fkey_end until we find a bound suffix.
6409 If we fail, increment fkey_start
6410 and start fkey_end from there. */
6411 while (fkey_end
< t
)
6415 key
= keybuf
[fkey_end
++];
6416 /* Look up meta-characters by prefixing them
6417 with meta_prefix_char. I hate this. */
6418 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6423 (access_keymap (fkey_map
, meta_prefix_char
, 1, 0)),
6425 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6428 fkey_next
= fkey_map
;
6431 = get_keyelt (access_keymap (fkey_next
, key
, 1, 0));
6433 #if 0 /* I didn't turn this on, because it might cause trouble
6434 for the mapping of return into C-m and tab into C-i. */
6435 /* Optionally don't map function keys into other things.
6436 This enables the user to redefine kp- keys easily. */
6437 if (SYMBOLP (key
) && !NILP (Vinhibit_function_key_mapping
))
6441 /* If the function key map gives a function, not an
6442 array, then call the function with no args and use
6443 its value instead. */
6444 if (SYMBOLP (fkey_next
) && ! NILP (Ffboundp (fkey_next
))
6447 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6451 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6452 fkey_next
= call1 (fkey_next
, prompt
);
6454 /* If the function returned something invalid,
6455 barf--don't ignore it.
6456 (To ignore it safely, we would need to gcpro a bunch of
6457 other variables.) */
6458 if (! (VECTORP (fkey_next
) || STRINGP (fkey_next
)))
6459 error ("Function in key-translation-map returns invalid key sequence");
6462 function_key_possible
= ! NILP (fkey_next
);
6464 /* If keybuf[fkey_start..fkey_end] is bound in the
6465 function key map and it's a suffix of the current
6466 sequence (i.e. fkey_end == t), replace it with
6467 the binding and restart with fkey_start at the end. */
6468 if ((VECTORP (fkey_next
) || STRINGP (fkey_next
))
6471 int len
= XFASTINT (Flength (fkey_next
));
6473 t
= fkey_start
+ len
;
6475 error ("Key sequence too long");
6477 if (VECTORP (fkey_next
))
6478 bcopy (XVECTOR (fkey_next
)->contents
,
6479 keybuf
+ fkey_start
,
6480 (t
- fkey_start
) * sizeof (keybuf
[0]));
6481 else if (STRINGP (fkey_next
))
6485 for (i
= 0; i
< len
; i
++)
6486 XSETFASTINT (keybuf
[fkey_start
+ i
],
6487 XSTRING (fkey_next
)->data
[i
]);
6491 fkey_start
= fkey_end
= t
;
6492 fkey_map
= Vfunction_key_map
;
6494 /* Do pass the results through key-translation-map. */
6495 keytran_start
= keytran_end
= 0;
6496 keytran_map
= Vkey_translation_map
;
6498 goto replay_sequence
;
6501 fkey_map
= get_keymap_1 (fkey_next
, 0, 1);
6503 /* If we no longer have a bound suffix, try a new positions for
6505 if (NILP (fkey_map
))
6507 fkey_end
= ++fkey_start
;
6508 fkey_map
= Vfunction_key_map
;
6509 function_key_possible
= 0;
6514 /* Look for this sequence in key-translation-map. */
6516 Lisp_Object keytran_next
;
6518 /* Scan from keytran_end until we find a bound suffix. */
6519 while (keytran_end
< t
)
6523 key
= keybuf
[keytran_end
++];
6524 /* Look up meta-characters by prefixing them
6525 with meta_prefix_char. I hate this. */
6526 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6531 (access_keymap (keytran_map
, meta_prefix_char
, 1, 0)),
6533 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6536 keytran_next
= keytran_map
;
6539 = get_keyelt (access_keymap (keytran_next
, key
, 1, 0));
6541 /* If the key translation map gives a function, not an
6542 array, then call the function with no args and use
6543 its value instead. */
6544 if (SYMBOLP (keytran_next
) && ! NILP (Ffboundp (keytran_next
))
6545 && keytran_end
== t
)
6547 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6551 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6552 keytran_next
= call1 (keytran_next
, prompt
);
6554 /* If the function returned something invalid,
6555 barf--don't ignore it.
6556 (To ignore it safely, we would need to gcpro a bunch of
6557 other variables.) */
6558 if (! (VECTORP (keytran_next
) || STRINGP (keytran_next
)))
6559 error ("Function in key-translation-map returns invalid key sequence");
6562 key_translation_possible
= ! NILP (keytran_next
);
6564 /* If keybuf[keytran_start..keytran_end] is bound in the
6565 key translation map and it's a suffix of the current
6566 sequence (i.e. keytran_end == t), replace it with
6567 the binding and restart with keytran_start at the end. */
6568 if ((VECTORP (keytran_next
) || STRINGP (keytran_next
))
6569 && keytran_end
== t
)
6571 int len
= XFASTINT (Flength (keytran_next
));
6573 t
= keytran_start
+ len
;
6575 error ("Key sequence too long");
6577 if (VECTORP (keytran_next
))
6578 bcopy (XVECTOR (keytran_next
)->contents
,
6579 keybuf
+ keytran_start
,
6580 (t
- keytran_start
) * sizeof (keybuf
[0]));
6581 else if (STRINGP (keytran_next
))
6585 for (i
= 0; i
< len
; i
++)
6586 XSETFASTINT (keybuf
[keytran_start
+ i
],
6587 XSTRING (keytran_next
)->data
[i
]);
6591 keytran_start
= keytran_end
= t
;
6592 keytran_map
= Vkey_translation_map
;
6594 /* Don't pass the results of key-translation-map
6595 through function-key-map. */
6596 fkey_start
= fkey_end
= t
;
6597 fkey_map
= Vkey_translation_map
;
6599 goto replay_sequence
;
6602 keytran_map
= get_keymap_1 (keytran_next
, 0, 1);
6604 /* If we no longer have a bound suffix, try a new positions for
6606 if (NILP (keytran_map
))
6608 keytran_end
= ++keytran_start
;
6609 keytran_map
= Vkey_translation_map
;
6610 key_translation_possible
= 0;
6615 /* If KEY is not defined in any of the keymaps,
6616 and cannot be part of a function key or translation,
6617 and is an upper case letter
6618 use the corresponding lower-case letter instead. */
6619 if (first_binding
== nmaps
&& ! function_key_possible
6620 && ! key_translation_possible
6622 && ((((XINT (key
) & 0x3ffff)
6623 < XSTRING (current_buffer
->downcase_table
)->size
)
6624 && UPPERCASEP (XINT (key
) & 0x3ffff))
6625 || (XINT (key
) & shift_modifier
)))
6627 Lisp_Object new_key
;
6629 original_uppercase
= key
;
6630 original_uppercase_position
= t
- 1;
6632 if (XINT (key
) & shift_modifier
)
6633 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
6635 XSETINT (new_key
, (DOWNCASE (XINT (key
) & 0x3ffff)
6636 | (XINT (key
) & ~0x3ffff)));
6638 /* We have to do this unconditionally, regardless of whether
6639 the lower-case char is defined in the keymaps, because they
6640 might get translated through function-key-map. */
6641 keybuf
[t
- 1] = new_key
;
6644 fkey_map
= prev_fkey_map
;
6645 fkey_start
= prev_fkey_start
;
6646 fkey_end
= prev_fkey_end
;
6648 keytran_map
= prev_keytran_map
;
6649 keytran_start
= prev_keytran_start
;
6650 keytran_end
= prev_keytran_end
;
6652 goto replay_sequence
;
6654 /* If KEY is not defined in any of the keymaps,
6655 and cannot be part of a function key or translation,
6656 and is a shifted function key,
6657 use the corresponding unshifted function key instead. */
6658 if (first_binding
== nmaps
&& ! function_key_possible
6659 && ! key_translation_possible
6662 Lisp_Object breakdown
;
6665 breakdown
= parse_modifiers (key
);
6666 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6667 if (modifiers
& shift_modifier
)
6669 Lisp_Object new_key
;
6671 original_uppercase
= key
;
6672 original_uppercase_position
= t
- 1;
6674 modifiers
&= ~shift_modifier
;
6675 new_key
= apply_modifiers (modifiers
,
6676 XCONS (breakdown
)->car
);
6678 keybuf
[t
- 1] = new_key
;
6681 fkey_map
= prev_fkey_map
;
6682 fkey_start
= prev_fkey_start
;
6683 fkey_end
= prev_fkey_end
;
6685 keytran_map
= prev_keytran_map
;
6686 keytran_start
= prev_keytran_start
;
6687 keytran_end
= prev_keytran_end
;
6689 goto replay_sequence
;
6695 read_key_sequence_cmd
= (first_binding
< nmaps
6696 ? defs
[first_binding
]
6699 unread_switch_frame
= delayed_switch_frame
;
6700 unbind_to (count
, Qnil
);
6702 /* Don't downcase the last character if the caller says don't.
6703 Don't downcase it if the result is undefined, either. */
6704 if ((dont_downcase_last
|| first_binding
>= nmaps
)
6705 && t
- 1 == original_uppercase_position
)
6706 keybuf
[t
- 1] = original_uppercase
;
6708 /* Occasionally we fabricate events, perhaps by expanding something
6709 according to function-key-map, or by adding a prefix symbol to a
6710 mouse click in the scroll bar or modeline. In this cases, return
6711 the entire generated key sequence, even if we hit an unbound
6712 prefix or a definition before the end. This means that you will
6713 be able to push back the event properly, and also means that
6714 read-key-sequence will always return a logical unit.
6717 for (; t
< mock_input
; t
++)
6719 if (echo_keystrokes
)
6720 echo_char (keybuf
[t
]);
6721 add_command_key (keybuf
[t
]);
6727 #if 0 /* This doc string is too long for some compilers.
6728 This commented-out definition serves for DOC. */
6729 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6730 "Read a sequence of keystrokes and return as a string or vector.\n\
6731 The sequence is sufficient to specify a non-prefix command in the\n\
6732 current local and global maps.\n\
6734 First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\
6735 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\
6736 as a continuation of the previous key.\n\
6738 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\
6739 convert the last event to lower case. (Normally any upper case event\n\
6740 is converted to lower case if the original event is undefined and the lower\n\
6741 case equivalent is defined.) A non-nil value is appropriate for reading\n\
6742 a key sequence to be defined.\n\
6744 A C-g typed while in this function is treated like any other character,\n\
6745 and `quit-flag' is not set.\n\
6747 If the key sequence starts with a mouse click, then the sequence is read\n\
6748 using the keymaps of the buffer of the window clicked in, not the buffer\n\
6749 of the selected window as normal.\n\
6751 `read-key-sequence' drops unbound button-down events, since you normally\n\
6752 only care about the click or drag events which follow them. If a drag\n\
6753 or multi-click event is unbound, but the corresponding click event would\n\
6754 be bound, `read-key-sequence' turns the event into a click event at the\n\
6755 drag's starting position. This means that you don't have to distinguish\n\
6756 between click and drag, double, or triple events unless you want to.\n\
6758 `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\
6759 lines separating windows, and scroll bars with imaginary keys\n\
6760 `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\
6762 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\
6763 function will process a switch-frame event if the user switches frames\n\
6764 before typing anything. If the user switches frames in the middle of a\n\
6765 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\
6766 is nil, then the event will be put off until after the current key sequence.\n\
6768 `read-key-sequence' checks `function-key-map' for function key\n\
6769 sequences, where they wouldn't conflict with ordinary bindings. See\n\
6770 `function-key-map' for more details.")
6771 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6774 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6776 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6777 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
6778 Lisp_Object can_return_switch_frame
;
6780 Lisp_Object keybuf
[30];
6782 struct gcpro gcpro1
, gcpro2
;
6785 CHECK_STRING (prompt
, 0);
6788 bzero (keybuf
, sizeof keybuf
);
6790 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
6792 if (NILP (continue_echo
))
6794 this_command_key_count
= 0;
6795 this_single_command_key_start
= 0;
6798 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
6799 prompt
, ! NILP (dont_downcase_last
),
6800 ! NILP (can_return_switch_frame
));
6808 return make_event_array (i
, keybuf
);
6811 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
6812 "Execute CMD as an editor command.\n\
6813 CMD must be a symbol that satisfies the `commandp' predicate.\n\
6814 Optional second arg RECORD-FLAG non-nil\n\
6815 means unconditionally put this command in `command-history'.\n\
6816 Otherwise, that is done only if an arg is read using the minibuffer.\n\
6817 The argument KEYS specifies the value to use instead of (this-command-keys)\n\
6818 when reading the arguments; if it is nil, (this-command-keys) is used.\n\
6819 The argument SPECIAL, if non-nil, means that this command is executing\n\
6820 a special event, so ignore the prefix argument and don't clear it.")
6821 (cmd
, record_flag
, keys
, special
)
6822 Lisp_Object cmd
, record_flag
, keys
, special
;
6824 register Lisp_Object final
;
6825 register Lisp_Object tem
;
6826 Lisp_Object prefixarg
;
6827 struct backtrace backtrace
;
6828 extern int debug_on_next_call
;
6830 debug_on_next_call
= 0;
6834 prefixarg
= current_kboard
->Vprefix_arg
;
6835 Vcurrent_prefix_arg
= prefixarg
;
6836 current_kboard
->Vprefix_arg
= Qnil
;
6843 tem
= Fget (cmd
, Qdisabled
);
6844 if (!NILP (tem
) && !NILP (Vrun_hooks
))
6846 tem
= Fsymbol_value (Qdisabled_command_hook
);
6848 return call1 (Vrun_hooks
, Qdisabled_command_hook
);
6854 final
= Findirect_function (cmd
);
6856 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
6858 struct gcpro gcpro1
, gcpro2
;
6860 GCPRO2 (cmd
, prefixarg
);
6861 do_autoload (final
, cmd
);
6868 if (STRINGP (final
) || VECTORP (final
))
6870 /* If requested, place the macro in the command history. For
6871 other sorts of commands, call-interactively takes care of
6873 if (!NILP (record_flag
))
6875 = Fcons (Fcons (Qexecute_kbd_macro
,
6876 Fcons (final
, Fcons (prefixarg
, Qnil
))),
6879 return Fexecute_kbd_macro (final
, prefixarg
);
6881 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
6883 backtrace
.next
= backtrace_list
;
6884 backtrace_list
= &backtrace
;
6885 backtrace
.function
= &Qcall_interactively
;
6886 backtrace
.args
= &cmd
;
6887 backtrace
.nargs
= 1;
6888 backtrace
.evalargs
= 0;
6890 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
6892 backtrace_list
= backtrace
.next
;
6898 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
6900 "Read function name, then read its arguments and call it.")
6902 Lisp_Object prefixarg
;
6904 defsubr (&Sfocus_frame
);
6905 defsubr (&Sunfocus_frame
);
6906 Lisp_Object function
;
6908 Lisp_Object saved_keys
;
6909 struct gcpro gcpro1
, gcpro2
;
6911 saved_keys
= Fvector (this_command_key_count
,
6912 XVECTOR (this_command_keys
)->contents
);
6914 GCPRO2 (saved_keys
, prefixarg
);
6916 if (EQ (prefixarg
, Qminus
))
6918 else if (CONSP (prefixarg
) && XINT (XCONS (prefixarg
)->car
) == 4)
6919 strcpy (buf
, "C-u ");
6920 else if (CONSP (prefixarg
) && INTEGERP (XCONS (prefixarg
)->car
))
6922 if (sizeof (int) == sizeof (EMACS_INT
))
6923 sprintf (buf
, "%d ", XINT (XCONS (prefixarg
)->car
));
6924 else if (sizeof (long) == sizeof (EMACS_INT
))
6925 sprintf (buf
, "%ld ", XINT (XCONS (prefixarg
)->car
));
6929 else if (INTEGERP (prefixarg
))
6931 if (sizeof (int) == sizeof (EMACS_INT
))
6932 sprintf (buf
, "%d ", XINT (prefixarg
));
6933 else if (sizeof (long) == sizeof (EMACS_INT
))
6934 sprintf (buf
, "%ld ", XINT (prefixarg
));
6939 /* This isn't strictly correct if execute-extended-command
6940 is bound to anything else. Perhaps it should use
6941 this_command_keys? */
6942 strcat (buf
, "M-x ");
6944 /* Prompt with buf, and then read a string, completing from and
6945 restricting to the set of all defined commands. Don't provide
6946 any initial input. Save the command read on the extended-command
6948 function
= Fcompleting_read (build_string (buf
),
6949 Vobarray
, Qcommandp
,
6950 Qt
, Qnil
, Qextended_command_history
);
6952 if (STRINGP (function
) && XSTRING (function
)->size
== 0)
6953 error ("No command name given");
6955 /* Set this_command_keys to the concatenation of saved_keys and
6956 function, followed by a RET. */
6958 struct Lisp_String
*str
;
6963 this_command_key_count
= 0;
6964 this_single_command_key_start
= 0;
6966 keys
= XVECTOR (saved_keys
)->contents
;
6967 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
6968 add_command_key (keys
[i
]);
6970 str
= XSTRING (function
);
6971 for (i
= 0; i
< str
->size
; i
++)
6973 XSETFASTINT (tem
, str
->data
[i
]);
6974 add_command_key (tem
);
6977 XSETFASTINT (tem
, '\015');
6978 add_command_key (tem
);
6983 function
= Fintern (function
, Qnil
);
6984 current_kboard
->Vprefix_arg
= prefixarg
;
6985 this_command
= function
;
6987 /* If enabled, show which key runs this command. */
6988 if (!NILP (Vsuggest_key_bindings
)
6989 && NILP (Vexecuting_macro
)
6990 && SYMBOLP (function
))
6992 Lisp_Object bindings
;
6994 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
6997 if (!NILP (bindings
))
6999 message ("You can run the command `%s' by typing %s",
7000 XSYMBOL (function
)->name
->data
,
7001 XSTRING (Fkey_description (bindings
))->data
);
7002 Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
7003 ? Vsuggest_key_bindings
: make_number (2)),
7008 return Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
7011 /* Find the set of keymaps now active.
7012 Store into *MAPS_P a vector holding the various maps
7013 and return the number of them. The vector was malloc'd
7014 and the caller should free it. */
7017 current_active_maps (maps_p
)
7018 Lisp_Object
**maps_p
;
7020 Lisp_Object
*tmaps
, *maps
;
7023 /* Should overriding-terminal-local-map and overriding-local-map apply? */
7024 if (!NILP (Voverriding_local_map_menu_flag
))
7026 /* Yes, use them (if non-nil) as well as the global map. */
7027 maps
= (Lisp_Object
*) xmalloc (3 * sizeof (maps
[0]));
7029 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
7030 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
7031 if (!NILP (Voverriding_local_map
))
7032 maps
[nmaps
++] = Voverriding_local_map
;
7036 /* No, so use major and minor mode keymaps. */
7037 nmaps
= current_minor_maps (NULL
, &tmaps
);
7038 maps
= (Lisp_Object
*) xmalloc ((nmaps
+ 2) * sizeof (maps
[0]));
7039 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
7040 #ifdef USE_TEXT_PROPERTIES
7041 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
7043 maps
[nmaps
++] = current_buffer
->keymap
;
7046 maps
[nmaps
++] = current_global_map
;
7052 /* Return nonzero if input events are pending. */
7054 detect_input_pending ()
7057 get_input_pending (&input_pending
, 0);
7059 return input_pending
;
7062 /* Return nonzero if input events are pending, and run any pending timers. */
7064 detect_input_pending_run_timers (do_display
)
7067 int old_timers_run
= timers_run
;
7070 get_input_pending (&input_pending
, 1);
7072 if (old_timers_run
!= timers_run
&& do_display
)
7073 redisplay_preserve_echo_area ();
7075 return input_pending
;
7078 /* This is called in some cases before a possible quit.
7079 It cases the next call to detect_input_pending to recompute input_pending.
7080 So calling this function unnecessarily can't do any harm. */
7081 clear_input_pending ()
7086 /* Return nonzero if there are pending requeued events.
7087 This isn't used yet. The hope is to make wait_reading_process_input
7088 call it, and return return if it runs Lisp code that unreads something.
7089 The problem is, kbd_buffer_get_event needs to be fixed to know what
7090 to do in that case. It isn't trivial. */
7092 requeued_events_pending_p ()
7094 return (!NILP (Vunread_command_events
) || unread_command_char
!= -1);
7098 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
7099 "T if command input is currently available with no waiting.\n\
7100 Actually, the value is nil only if we can be sure that no input is available.")
7103 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
7106 get_input_pending (&input_pending
, 1);
7107 return input_pending
> 0 ? Qt
: Qnil
;
7110 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
7111 "Return vector of last 100 events, not counting those from keyboard macros.")
7114 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
7117 if (total_keys
< NUM_RECENT_KEYS
)
7118 return Fvector (total_keys
, keys
);
7121 val
= Fvector (NUM_RECENT_KEYS
, keys
);
7122 bcopy (keys
+ recent_keys_index
,
7123 XVECTOR (val
)->contents
,
7124 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
7126 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
7127 recent_keys_index
* sizeof (Lisp_Object
));
7132 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
7133 "Return the key sequence that invoked this command.\n\
7134 The value is a string or a vector.")
7137 return make_event_array (this_command_key_count
,
7138 XVECTOR (this_command_keys
)->contents
);
7141 DEFUN ("this-single-command-keys", Fthis_single_command_keys
,
7142 Sthis_single_command_keys
, 0, 0, 0,
7143 "Return the key sequence that invoked this command.\n\
7144 Unlike `this-command-keys', this function's value\n\
7145 does not include prefix arguments.\n\
7146 The value is a string or a vector.")
7149 return make_event_array (this_command_key_count
7150 - this_single_command_key_start
,
7151 (XVECTOR (this_command_keys
)->contents
7152 + this_single_command_key_start
));
7155 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
7156 Sreset_this_command_lengths
, 0, 0, 0,
7157 "Used for complicated reasons in `universal-argument-other-key'.\n\
7159 `universal-argument-other-key' rereads the event just typed.\n\
7160 It then gets translated through `function-key-map'.\n\
7161 The translated event gets included in the echo area and in\n\
7162 the value of `this-command-keys' in addition to the raw original event.\n\
7163 That is not right.\n\
7165 Calling this function directs the translated event to replace\n\
7166 the original event, so that only one version of the event actually\n\
7167 appears in the echo area and in the value of `this-command-keys.'.")
7170 before_command_restore_flag
= 1;
7171 before_command_key_count_1
= before_command_key_count
;
7172 before_command_echo_length_1
= before_command_echo_length
;
7175 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
7176 "Return the current depth in recursive edits.")
7180 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
7184 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
7185 "FOpen dribble file: ",
7186 "Start writing all keyboard characters to a dribble file called FILE.\n\
7187 If FILE is nil, close any open dribble file.")
7198 file
= Fexpand_file_name (file
, Qnil
);
7199 dribble
= fopen (XSTRING (file
)->data
, "w");
7201 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
7206 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
7207 "Discard the contents of the terminal input buffer.\n\
7208 Also cancel any kbd macro being defined.")
7211 current_kboard
->defining_kbd_macro
= Qnil
;
7212 update_mode_lines
++;
7214 Vunread_command_events
= Qnil
;
7215 unread_command_char
= -1;
7217 discard_tty_input ();
7219 /* Without the cast, GCC complains that this assignment loses the
7220 volatile qualifier of kbd_store_ptr. Is there anything wrong
7222 kbd_fetch_ptr
= (struct input_event
*) kbd_store_ptr
;
7223 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7229 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
7230 "Stop Emacs and return to superior process. You can resume later.\n\
7231 If `cannot-suspend' is non-nil, or if the system doesn't support job\n\
7232 control, run a subshell instead.\n\n\
7233 If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\
7234 to be read as terminal input by Emacs's parent, after suspension.\n\
7236 Before suspending, run the normal hook `suspend-hook'.\n\
7237 After resumption run the normal hook `suspend-resume-hook'.\n\
7239 Some operating systems cannot stop the Emacs process and resume it later.\n\
7240 On such systems, Emacs starts a subshell instead of suspending.")
7242 Lisp_Object stuffstring
;
7245 int count
= specpdl_ptr
- specpdl
;
7246 int old_height
, old_width
;
7248 struct gcpro gcpro1
, gcpro2
;
7249 extern init_sys_modes ();
7251 if (!NILP (stuffstring
))
7252 CHECK_STRING (stuffstring
, 0);
7254 /* Run the functions in suspend-hook. */
7255 if (!NILP (Vrun_hooks
))
7256 call1 (Vrun_hooks
, intern ("suspend-hook"));
7258 GCPRO1 (stuffstring
);
7259 get_frame_size (&old_width
, &old_height
);
7261 /* sys_suspend can get an error if it tries to fork a subshell
7262 and the system resources aren't available for that. */
7263 record_unwind_protect (init_sys_modes
, 0);
7264 stuff_buffered_input (stuffstring
);
7269 unbind_to (count
, Qnil
);
7271 /* Check if terminal/window size has changed.
7272 Note that this is not useful when we are running directly
7273 with a window system; but suspend should be disabled in that case. */
7274 get_frame_size (&width
, &height
);
7275 if (width
!= old_width
|| height
!= old_height
)
7276 change_frame_size (selected_frame
, height
, width
, 0, 0);
7278 /* Run suspend-resume-hook. */
7279 if (!NILP (Vrun_hooks
))
7280 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
7286 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
7287 Then in any case stuff anything Emacs has read ahead and not used. */
7289 stuff_buffered_input (stuffstring
)
7290 Lisp_Object stuffstring
;
7292 /* stuff_char works only in BSD, versions 4.2 and up. */
7295 register unsigned char *p
;
7297 if (STRINGP (stuffstring
))
7301 p
= XSTRING (stuffstring
)->data
;
7302 count
= XSTRING (stuffstring
)->size
;
7307 /* Anything we have read ahead, put back for the shell to read. */
7308 /* ?? What should this do when we have multiple keyboards??
7309 Should we ignore anything that was typed in at the "wrong" kboard? */
7310 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
7312 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
7313 kbd_fetch_ptr
= kbd_buffer
;
7314 if (kbd_fetch_ptr
->kind
== ascii_keystroke
)
7315 stuff_char (kbd_fetch_ptr
->code
);
7316 kbd_fetch_ptr
->kind
= no_event
;
7317 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_fetch_ptr
7323 #endif /* BSD and not BSD4_1 */
7326 set_waiting_for_input (time_to_clear
)
7327 EMACS_TIME
*time_to_clear
;
7329 input_available_clear_time
= time_to_clear
;
7331 /* Tell interrupt_signal to throw back to read_char, */
7332 waiting_for_input
= 1;
7334 /* If interrupt_signal was called before and buffered a C-g,
7335 make it run again now, to avoid timing error. */
7336 if (!NILP (Vquit_flag
))
7337 quit_throw_to_read_char ();
7340 clear_waiting_for_input ()
7342 /* Tell interrupt_signal not to throw back to read_char, */
7343 waiting_for_input
= 0;
7344 input_available_clear_time
= 0;
7347 /* This routine is called at interrupt level in response to C-G.
7348 If interrupt_input, this is the handler for SIGINT.
7349 Otherwise, it is called from kbd_buffer_store_event,
7350 in handling SIGIO or SIGTINT.
7352 If `waiting_for_input' is non zero, then unless `echoing' is nonzero,
7353 immediately throw back to read_char.
7355 Otherwise it sets the Lisp variable quit-flag not-nil.
7356 This causes eval to throw, when it gets a chance.
7357 If quit-flag is already non-nil, it stops the job right away. */
7360 interrupt_signal (signalnum
) /* If we don't have an argument, */
7361 int signalnum
; /* some compilers complain in signal calls. */
7364 /* Must preserve main program's value of errno. */
7365 int old_errno
= errno
;
7367 #if defined (USG) && !defined (POSIX_SIGNALS)
7368 if (!read_socket_hook
&& NILP (Vwindow_system
))
7370 /* USG systems forget handlers when they are used;
7371 must reestablish each time */
7372 signal (SIGINT
, interrupt_signal
);
7373 signal (SIGQUIT
, interrupt_signal
);
7379 if (!NILP (Vquit_flag
) && FRAME_TERMCAP_P (selected_frame
))
7384 #ifdef SIGTSTP /* Support possible in later USG versions */
7386 * On systems which can suspend the current process and return to the original
7387 * shell, this command causes the user to end up back at the shell.
7388 * The "Auto-save" and "Abort" questions are not asked until
7389 * the user elects to return to emacs, at which point he can save the current
7390 * job and either dump core or continue.
7395 if (sys_suspend () == -1)
7397 printf ("Not running as a subprocess;\n");
7398 printf ("you can continue or abort.\n");
7401 /* Perhaps should really fork an inferior shell?
7402 But that would not provide any way to get back
7403 to the original shell, ever. */
7404 printf ("No support for stopping a process on this operating system;\n");
7405 printf ("you can continue or abort.\n");
7406 #endif /* not VMS */
7407 #endif /* not SIGTSTP */
7409 /* We must remain inside the screen area when the internal terminal
7410 is used. Note that [Enter] is not echoed by dos. */
7413 /* It doesn't work to autosave while GC is in progress;
7414 the code used for auto-saving doesn't cope with the mark bit. */
7415 if (!gc_in_progress
)
7417 printf ("Auto-save? (y or n) ");
7419 if (((c
= getchar ()) & ~040) == 'Y')
7421 Fdo_auto_save (Qt
, Qnil
);
7423 printf ("\r\nAuto-save done");
7424 #else /* not MSDOS */
7425 printf ("Auto-save done\n");
7426 #endif /* not MSDOS */
7428 while (c
!= '\n') c
= getchar ();
7432 /* During GC, it must be safe to reenable quitting again. */
7433 Vinhibit_quit
= Qnil
;
7436 #endif /* not MSDOS */
7437 printf ("Garbage collection in progress; cannot auto-save now\r\n");
7438 printf ("but will instead do a real quit after garbage collection ends\r\n");
7443 printf ("\r\nAbort? (y or n) ");
7444 #else /* not MSDOS */
7446 printf ("Abort (and enter debugger)? (y or n) ");
7448 printf ("Abort (and dump core)? (y or n) ");
7449 #endif /* not VMS */
7450 #endif /* not MSDOS */
7452 if (((c
= getchar ()) & ~040) == 'Y')
7454 while (c
!= '\n') c
= getchar ();
7456 printf ("\r\nContinuing...\r\n");
7457 #else /* not MSDOS */
7458 printf ("Continuing...\n");
7459 #endif /* not MSDOS */
7465 /* If executing a function that wants to be interrupted out of
7466 and the user has not deferred quitting by binding `inhibit-quit'
7467 then quit right away. */
7468 if (immediate_quit
&& NILP (Vinhibit_quit
))
7472 Fsignal (Qquit
, Qnil
);
7475 /* Else request quit when it's safe */
7479 if (waiting_for_input
&& !echoing
)
7480 quit_throw_to_read_char ();
7485 /* Handle a C-g by making read_char return C-g. */
7487 quit_throw_to_read_char ()
7489 quit_error_check ();
7491 /* Prevent another signal from doing this before we finish. */
7492 clear_waiting_for_input ();
7495 Vunread_command_events
= Qnil
;
7496 unread_command_char
= -1;
7498 #if 0 /* Currently, sit_for is called from read_char without turning
7499 off polling. And that can call set_waiting_for_input.
7500 It seems to be harmless. */
7501 #ifdef POLL_FOR_INPUT
7502 /* May be > 1 if in recursive minibuffer. */
7503 if (poll_suppress_count
== 0)
7507 if (FRAMEP (internal_last_event_frame
)
7508 && XFRAME (internal_last_event_frame
) != selected_frame
)
7509 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
7512 _longjmp (getcjmp
, 1);
7515 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
7516 "Set mode of reading keyboard input.\n\
7517 First arg INTERRUPT non-nil means use input interrupts;\n\
7518 nil means use CBREAK mode.\n\
7519 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\
7520 (no effect except in CBREAK mode).\n\
7521 Third arg META t means accept 8-bit input (for a Meta key).\n\
7522 META nil means ignore the top bit, on the assumption it is parity.\n\
7523 Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\
7524 Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\
7525 See also `current-input-mode'.")
7526 (interrupt
, flow
, meta
, quit
)
7527 Lisp_Object interrupt
, flow
, meta
, quit
;
7530 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
7531 error ("set-input-mode: QUIT must be an ASCII character");
7533 #ifdef POLL_FOR_INPUT
7538 /* this causes startup screen to be restored and messes with the mouse */
7543 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7544 if (read_socket_hook
)
7546 /* When using X, don't give the user a real choice,
7547 because we haven't implemented the mechanisms to support it. */
7548 #ifdef NO_SOCK_SIGIO
7549 interrupt_input
= 0;
7550 #else /* not NO_SOCK_SIGIO */
7551 interrupt_input
= 1;
7552 #endif /* NO_SOCK_SIGIO */
7555 interrupt_input
= !NILP (interrupt
);
7556 #else /* not SIGIO */
7557 interrupt_input
= 0;
7558 #endif /* not SIGIO */
7560 /* Our VMS input only works by interrupts, as of now. */
7562 interrupt_input
= 1;
7565 flow_control
= !NILP (flow
);
7568 else if (EQ (meta
, Qt
))
7573 /* Don't let this value be out of range. */
7574 quit_char
= XINT (quit
) & (meta_key
? 0377 : 0177);
7580 #ifdef POLL_FOR_INPUT
7581 poll_suppress_count
= 1;
7587 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
7588 "Return information about the way Emacs currently reads keyboard input.\n\
7589 The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\
7590 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\
7591 nil, Emacs is using CBREAK mode.\n\
7592 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\
7593 terminal; this does not apply if Emacs uses interrupt-driven input.\n\
7594 META is t if accepting 8-bit input with 8th bit as Meta flag.\n\
7595 META nil means ignoring the top bit, on the assumption it is parity.\n\
7596 META is neither t nor nil if accepting 8-bit input and using\n\
7597 all 8 bits as the character code.\n\
7598 QUIT is the character Emacs currently uses to quit.\n\
7599 The elements of this list correspond to the arguments of\n\
7605 val
[0] = interrupt_input
? Qt
: Qnil
;
7606 val
[1] = flow_control
? Qt
: Qnil
;
7607 val
[2] = meta_key
== 2 ? make_number (0) : meta_key
== 1 ? Qt
: Qnil
;
7608 XSETFASTINT (val
[3], quit_char
);
7610 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
7615 * Set up a new kboard object with reasonable initial values.
7621 kb
->Voverriding_terminal_local_map
= Qnil
;
7622 kb
->Vlast_command
= Qnil
;
7623 kb
->Vprefix_arg
= Qnil
;
7624 kb
->kbd_queue
= Qnil
;
7625 kb
->kbd_queue_has_data
= 0;
7626 kb
->immediate_echo
= 0;
7627 kb
->echoptr
= kb
->echobuf
;
7628 kb
->echo_after_prompt
= -1;
7629 kb
->kbd_macro_buffer
= 0;
7630 kb
->kbd_macro_bufsize
= 0;
7631 kb
->defining_kbd_macro
= Qnil
;
7632 kb
->Vlast_kbd_macro
= Qnil
;
7633 kb
->reference_count
= 0;
7634 kb
->Vsystem_key_alist
= Qnil
;
7635 kb
->system_key_syms
= Qnil
;
7636 kb
->Vdefault_minibuffer_frame
= Qnil
;
7640 * Destroy the contents of a kboard object, but not the object itself.
7641 * We use this just before deleting it, or if we're going to initialize
7648 if (kb
->kbd_macro_buffer
)
7649 xfree (kb
->kbd_macro_buffer
);
7658 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
7661 *kbp
= kb
->next_kboard
;
7669 /* This is correct before outermost invocation of the editor loop */
7670 command_loop_level
= -1;
7672 quit_char
= Ctl ('g');
7673 Vunread_command_events
= Qnil
;
7674 unread_command_char
= -1;
7675 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
7677 recent_keys_index
= 0;
7678 kbd_fetch_ptr
= kbd_buffer
;
7679 kbd_store_ptr
= kbd_buffer
;
7680 kbd_buffer_frame_or_window
7681 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7683 do_mouse_tracking
= Qnil
;
7687 /* This means that command_loop_1 won't try to select anything the first
7689 internal_last_event_frame
= Qnil
;
7690 Vlast_event_frame
= internal_last_event_frame
;
7693 current_kboard
= initial_kboard
;
7695 wipe_kboard (current_kboard
);
7696 init_kboard (current_kboard
);
7699 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7701 kbd_buffer_frame_or_window
7702 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7703 if (!noninteractive
&& !read_socket_hook
&& NILP (Vwindow_system
))
7705 signal (SIGINT
, interrupt_signal
);
7706 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
7707 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
7708 SIGQUIT and we can't tell which one it will give us. */
7709 signal (SIGQUIT
, interrupt_signal
);
7710 #endif /* HAVE_TERMIO */
7712 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7714 if (!noninteractive
)
7715 signal (SIGIO
, input_available_signal
);
7718 /* Use interrupt input by default, if it works and noninterrupt input
7719 has deficiencies. */
7721 #ifdef INTERRUPT_INPUT
7722 interrupt_input
= 1;
7724 interrupt_input
= 0;
7727 /* Our VMS input only works by interrupts, as of now. */
7729 interrupt_input
= 1;
7735 if (keyboard_init_hook
)
7736 (*keyboard_init_hook
) ();
7738 #ifdef POLL_FOR_INPUT
7739 poll_suppress_count
= 1;
7744 /* This type's only use is in syms_of_keyboard, to initialize the
7745 event header symbols and put properties on them. */
7752 struct event_head head_table
[] = {
7753 &Qmouse_movement
, "mouse-movement", &Qmouse_movement
,
7754 &Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
,
7755 &Qswitch_frame
, "switch-frame", &Qswitch_frame
,
7756 &Qdelete_frame
, "delete-frame", &Qdelete_frame
,
7757 &Qiconify_frame
, "iconify-frame", &Qiconify_frame
,
7758 &Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
,
7763 Qdisabled_command_hook
= intern ("disabled-command-hook");
7764 staticpro (&Qdisabled_command_hook
);
7766 Qself_insert_command
= intern ("self-insert-command");
7767 staticpro (&Qself_insert_command
);
7769 Qforward_char
= intern ("forward-char");
7770 staticpro (&Qforward_char
);
7772 Qbackward_char
= intern ("backward-char");
7773 staticpro (&Qbackward_char
);
7775 Qdisabled
= intern ("disabled");
7776 staticpro (&Qdisabled
);
7778 Qundefined
= intern ("undefined");
7779 staticpro (&Qundefined
);
7781 Qpre_command_hook
= intern ("pre-command-hook");
7782 staticpro (&Qpre_command_hook
);
7784 Qpost_command_hook
= intern ("post-command-hook");
7785 staticpro (&Qpost_command_hook
);
7787 Qpost_command_idle_hook
= intern ("post-command-idle-hook");
7788 staticpro (&Qpost_command_idle_hook
);
7790 Qdeferred_action_function
= intern ("deferred-action-function");
7791 staticpro (&Qdeferred_action_function
);
7793 Qcommand_hook_internal
= intern ("command-hook-internal");
7794 staticpro (&Qcommand_hook_internal
);
7796 Qfunction_key
= intern ("function-key");
7797 staticpro (&Qfunction_key
);
7798 Qmouse_click
= intern ("mouse-click");
7799 staticpro (&Qmouse_click
);
7800 Qtimer_event
= intern ("timer-event");
7801 staticpro (&Qtimer_event
);
7803 Qmenu_enable
= intern ("menu-enable");
7804 staticpro (&Qmenu_enable
);
7806 Qmode_line
= intern ("mode-line");
7807 staticpro (&Qmode_line
);
7808 Qvertical_line
= intern ("vertical-line");
7809 staticpro (&Qvertical_line
);
7810 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
7811 staticpro (&Qvertical_scroll_bar
);
7812 Qmenu_bar
= intern ("menu-bar");
7813 staticpro (&Qmenu_bar
);
7815 Qabove_handle
= intern ("above-handle");
7816 staticpro (&Qabove_handle
);
7817 Qhandle
= intern ("handle");
7818 staticpro (&Qhandle
);
7819 Qbelow_handle
= intern ("below-handle");
7820 staticpro (&Qbelow_handle
);
7821 Qup
= intern ("up");
7823 Qdown
= intern ("down");
7826 Qevent_kind
= intern ("event-kind");
7827 staticpro (&Qevent_kind
);
7828 Qevent_symbol_elements
= intern ("event-symbol-elements");
7829 staticpro (&Qevent_symbol_elements
);
7830 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
7831 staticpro (&Qevent_symbol_element_mask
);
7832 Qmodifier_cache
= intern ("modifier-cache");
7833 staticpro (&Qmodifier_cache
);
7835 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
7836 staticpro (&Qrecompute_lucid_menubar
);
7837 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
7838 staticpro (&Qactivate_menubar_hook
);
7840 Qpolling_period
= intern ("polling-period");
7841 staticpro (&Qpolling_period
);
7844 struct event_head
*p
;
7846 for (p
= head_table
;
7847 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
7850 *p
->var
= intern (p
->name
);
7852 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
7853 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
7857 button_down_location
= Fmake_vector (make_number (NUM_MOUSE_BUTTONS
), Qnil
);
7858 staticpro (&button_down_location
);
7862 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
7864 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
7865 for (i
= 0; i
< len
; i
++)
7866 if (modifier_names
[i
])
7867 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
7868 staticpro (&modifier_symbols
);
7871 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
7872 staticpro (&recent_keys
);
7874 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
7875 staticpro (&this_command_keys
);
7877 Qextended_command_history
= intern ("extended-command-history");
7878 Fset (Qextended_command_history
, Qnil
);
7879 staticpro (&Qextended_command_history
);
7881 kbd_buffer_frame_or_window
7882 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7883 staticpro (&kbd_buffer_frame_or_window
);
7885 accent_key_syms
= Qnil
;
7886 staticpro (&accent_key_syms
);
7888 func_key_syms
= Qnil
;
7889 staticpro (&func_key_syms
);
7892 staticpro (&mouse_syms
);
7894 unread_switch_frame
= Qnil
;
7895 staticpro (&unread_switch_frame
);
7897 defsubr (&Sevent_convert_list
);
7898 defsubr (&Sread_key_sequence
);
7899 defsubr (&Srecursive_edit
);
7901 defsubr (&Strack_mouse
);
7903 defsubr (&Sinput_pending_p
);
7904 defsubr (&Scommand_execute
);
7905 defsubr (&Srecent_keys
);
7906 defsubr (&Sthis_command_keys
);
7907 defsubr (&Sthis_single_command_keys
);
7908 defsubr (&Sreset_this_command_lengths
);
7909 defsubr (&Ssuspend_emacs
);
7910 defsubr (&Sabort_recursive_edit
);
7911 defsubr (&Sexit_recursive_edit
);
7912 defsubr (&Srecursion_depth
);
7913 defsubr (&Stop_level
);
7914 defsubr (&Sdiscard_input
);
7915 defsubr (&Sopen_dribble_file
);
7916 defsubr (&Sset_input_mode
);
7917 defsubr (&Scurrent_input_mode
);
7918 defsubr (&Sexecute_extended_command
);
7920 DEFVAR_LISP ("last-command-char", &last_command_char
,
7921 "Last input event that was part of a command.");
7923 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
7924 "Last input event that was part of a command.");
7926 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
7927 "Last input event in a command, except for mouse menu events.\n\
7928 Mouse menus give back keys that don't look like mouse events;\n\
7929 this variable holds the actual mouse event that led to the menu,\n\
7930 so that you can determine whether the command was run by mouse or not.");
7932 DEFVAR_LISP ("last-input-char", &last_input_char
,
7933 "Last input event.");
7935 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
7936 "Last input event.");
7938 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
7939 "List of objects to be read as next command input events.");
7941 DEFVAR_INT ("unread-command-char", &unread_command_char
,
7942 "If not -1, an object to be read as next command input event.");
7944 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
7945 "Meta-prefix character code. Meta-foo as command input\n\
7946 turns into this character followed by foo.");
7947 XSETINT (meta_prefix_char
, 033);
7949 DEFVAR_KBOARD ("last-command", Vlast_command
,
7950 "The last command executed. Normally a symbol with a function definition,\n\
7951 but can be whatever was found in the keymap, or whatever the variable\n\
7952 `this-command' was set to by that command.\n\
7954 The value `mode-exit' is special; it means that the previous command\n\
7955 read an event that told it to exit, and it did so and unread that event.\n\
7956 In other words, the present command is the event that made the previous\n\
7959 The value `kill-region' is special; it means that the previous command\n\
7960 was a kill command.");
7962 DEFVAR_LISP ("this-command", &this_command
,
7963 "The command now being executed.\n\
7964 The command can set this variable; whatever is put here\n\
7965 will be in `last-command' during the following command.");
7966 this_command
= Qnil
;
7968 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
7969 "*Number of keyboard input characters between auto-saves.\n\
7970 Zero means disable autosaving due to number of characters typed.");
7971 auto_save_interval
= 300;
7973 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
7974 "*Number of seconds idle time before auto-save.\n\
7975 Zero or nil means disable auto-saving due to idleness.\n\
7976 After auto-saving due to this many seconds of idle time,\n\
7977 Emacs also does a garbage collection if that seems to be warranted.");
7978 XSETFASTINT (Vauto_save_timeout
, 30);
7980 DEFVAR_INT ("echo-keystrokes", &echo_keystrokes
,
7981 "*Nonzero means echo unfinished commands after this many seconds of pause.");
7982 echo_keystrokes
= 1;
7984 DEFVAR_INT ("polling-period", &polling_period
,
7985 "*Interval between polling for input during Lisp execution.\n\
7986 The reason for polling is to make C-g work to stop a running program.\n\
7987 Polling is needed only when using X windows and SIGIO does not work.\n\
7988 Polling is automatically disabled in all other cases.");
7991 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
7992 "*Maximum time between mouse clicks to make a double-click.\n\
7993 Measured in milliseconds. nil means disable double-click recognition;\n\
7994 t means double-clicks have no time limit and are detected\n\
7995 by position only.");
7996 Vdouble_click_time
= make_number (500);
7998 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
7999 "*Non-nil means inhibit local map menu bar menus.");
8000 inhibit_local_menu_bar_menus
= 0;
8002 DEFVAR_INT ("num-input-keys", &num_input_keys
,
8003 "Number of complete keys read from the keyboard so far.");
8006 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
8007 "The frame in which the most recently read event occurred.\n\
8008 If the last event came from a keyboard macro, this is set to `macro'.");
8009 Vlast_event_frame
= Qnil
;
8011 DEFVAR_LISP ("help-char", &Vhelp_char
,
8012 "Character to recognize as meaning Help.\n\
8013 When it is read, do `(eval help-form)', and display result if it's a string.\n\
8014 If the value of `help-form' is nil, this char can be read normally.");
8015 XSETINT (Vhelp_char
, Ctl ('H'));
8017 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
8018 "List of input events to recognize as meaning Help.\n\
8019 These work just like the value of `help-char' (see that).");
8020 Vhelp_event_list
= Qnil
;
8022 DEFVAR_LISP ("help-form", &Vhelp_form
,
8023 "Form to execute when character `help-char' is read.\n\
8024 If the form returns a string, that string is displayed.\n\
8025 If `help-form' is nil, the help char is not recognized.");
8028 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
8029 "Command to run when `help-char' character follows a prefix key.\n\
8030 This command is used only when there is no actual binding\n\
8031 for that character after that prefix key.");
8032 Vprefix_help_command
= Qnil
;
8034 DEFVAR_LISP ("top-level", &Vtop_level
,
8035 "Form to evaluate when Emacs starts up.\n\
8036 Useful to set before you dump a modified Emacs.");
8039 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
8040 "Translate table for keyboard input, or nil.\n\
8041 Each character is looked up in this string and the contents used instead.\n\
8042 The value may be a string, a vector, or a char-table.\n\
8043 If it is a string or vector of length N,\n\
8044 character codes N and up are untranslated.\n\
8045 In a vector or a char-table, an element which is nil means \"no translation\".");
8046 Vkeyboard_translate_table
= Qnil
;
8048 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
8049 "Non-nil means to always spawn a subshell instead of suspending,\n\
8050 even if the operating system has support for stopping a process.");
8053 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
8054 "Non-nil means prompt with menus when appropriate.\n\
8055 This is done when reading from a keymap that has a prompt string,\n\
8056 for elements that have prompt strings.\n\
8057 The menu is displayed on the screen\n\
8058 if X menus were enabled at configuration\n\
8059 time and the previous event was a mouse click prefix key.\n\
8060 Otherwise, menu prompting uses the echo area.");
8063 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
8064 "Character to see next line of menu prompt.\n\
8065 Type this character while in a menu prompt to rotate around the lines of it.");
8066 XSETINT (menu_prompt_more_char
, ' ');
8068 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
8069 "A mask of additional modifier keys to use with every keyboard character.\n\
8070 Emacs applies the modifiers of the character stored here to each keyboard\n\
8071 character it reads. For example, after evaluating the expression\n\
8072 (setq extra-keyboard-modifiers ?\\C-x)\n\
8073 all input characters will have the control modifier applied to them.\n\
8075 Note that the character ?\\C-@, equivalent to the integer zero, does\n\
8076 not count as a control character; rather, it counts as a character\n\
8077 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\
8078 cancels any modification.");
8079 extra_keyboard_modifiers
= 0;
8081 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
8082 "If an editing command sets this to t, deactivate the mark afterward.\n\
8083 The command loop sets this to nil before each command,\n\
8084 and tests the value when the command returns.\n\
8085 Buffer modification stores t in this variable.");
8086 Vdeactivate_mark
= Qnil
;
8088 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
8089 "Temporary storage of pre-command-hook or post-command-hook.");
8090 Vcommand_hook_internal
= Qnil
;
8092 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
8093 "Normal hook run before each command is executed.\n\
8094 Errors running the hook are caught and ignored.");
8095 Vpre_command_hook
= Qnil
;
8097 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
8098 "Normal hook run after each command is executed.\n\
8099 Errors running the hook are caught and ignored.");
8100 Vpost_command_hook
= Qnil
;
8102 DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook
,
8103 "Normal hook run after each command is executed, if idle.\n\
8104 Errors running the hook are caught and ignored.\n\
8105 This feature is obsolete; use idle timers instead. See `etc/NEWS'.");
8106 Vpost_command_idle_hook
= Qnil
;
8108 DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay
,
8109 "Delay time before running `post-command-idle-hook'.\n\
8110 This is measured in microseconds.");
8111 post_command_idle_delay
= 100000;
8113 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
8114 "t means menu bar, specified Lucid style, needs to be recomputed.");
8115 Vlucid_menu_bar_dirty_flag
= Qnil
;
8117 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
8118 "List of menu bar items to move to the end of the menu bar.\n\
8119 The elements of the list are event types that may have menu bar bindings.");
8120 Vmenu_bar_final_items
= Qnil
;
8122 DEFVAR_KBOARD ("overriding-terminal-local-map",
8123 Voverriding_terminal_local_map
,
8124 "Keymap that overrides all other local keymaps.\n\
8125 If this variable is non-nil, it is used as a keymap instead of the\n\
8126 buffer's local map, and the minor mode keymaps and text property keymaps.");
8128 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
8129 "Keymap that overrides all other local keymaps.\n\
8130 If this variable is non-nil, it is used as a keymap instead of the\n\
8131 buffer's local map, and the minor mode keymaps and text property keymaps.");
8132 Voverriding_local_map
= Qnil
;
8134 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
8135 "Non-nil means `overriding-local-map' applies to the menu bar.\n\
8136 Otherwise, the menu bar continues to reflect the buffer's local map\n\
8137 and the minor mode maps regardless of `overriding-local-map'.");
8138 Voverriding_local_map_menu_flag
= Qnil
;
8140 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
8141 "Keymap defining bindings for special events to execute at low level.");
8142 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
8144 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
8145 "*Non-nil means generate motion events for mouse motion.");
8147 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
8148 "Alist of system-specific X windows key symbols.\n\
8149 Each element should have the form (N . SYMBOL) where N is the\n\
8150 numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\
8151 and SYMBOL is its name.");
8153 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
8154 "List of deferred actions to be performed at a later time.\n\
8155 The precise format isn't relevant here; we just check whether it is nil.");
8156 Vdeferred_action_list
= Qnil
;
8158 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
8159 "Function to call to handle deferred actions, after each command.\n\
8160 This function is called with no arguments after each command\n\
8161 whenever `deferred-action-list' is non-nil.");
8162 Vdeferred_action_function
= Qnil
;
8164 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
8165 "Non-nil means show the equivalent key-binding when M-x command has one.\n\
8166 The value can be a length of time to show the message for.\n\
8167 If the value is non-nil and not a number, we wait 2 seconds.");
8168 Vsuggest_key_bindings
= Qt
;
8170 DEFVAR_LISP ("timer-list", &Vtimer_list
,
8171 "List of active absolute time timers in order of increasing time");
8174 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
8175 "List of active idle-time timers in order of increasing time");
8176 Vtimer_idle_list
= Qnil
;
8181 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
8182 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
8183 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
8184 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
8185 initial_define_key (meta_map
, 'x', "execute-extended-command");
8187 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
8188 "handle-delete-frame");
8189 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
8191 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",