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 /* Record values of this_command_key_count and echo_length ()
129 before this command was read. */
130 static int before_command_key_count
;
131 static int before_command_echo_length
;
132 /* Values of before_command_key_count and before_command_echo_length
133 saved by reset-this-command-lengths. */
134 static int before_command_key_count_1
;
135 static int before_command_echo_length_1
;
136 /* Flag set by reset-this-command-lengths,
137 saying to reset the lengths when add_command_key is called. */
138 static int before_command_restore_flag
;
140 extern int minbuf_level
;
142 extern struct backtrace
*backtrace_list
;
144 /* Nonzero means do menu prompting. */
145 static int menu_prompting
;
147 /* Character to see next line of menu prompt. */
148 static Lisp_Object menu_prompt_more_char
;
150 /* For longjmp to where kbd input is being done. */
151 static jmp_buf getcjmp
;
153 /* True while doing kbd input. */
154 int waiting_for_input
;
156 /* True while displaying for echoing. Delays C-g throwing. */
159 /* True means we can start echoing at the next input pause
160 even though there is something in the echo area. */
161 static char *ok_to_echo_at_next_pause
;
163 /* Nonzero means disregard local maps for the menu bar. */
164 static int inhibit_local_menu_bar_menus
;
166 /* Nonzero means C-g should cause immediate error-signal. */
169 /* Character to recognize as the help char. */
170 Lisp_Object Vhelp_char
;
172 /* List of other event types to recognize as meaning "help". */
173 Lisp_Object Vhelp_event_list
;
175 /* Form to execute when help char is typed. */
176 Lisp_Object Vhelp_form
;
178 /* Command to run when the help character follows a prefix key. */
179 Lisp_Object Vprefix_help_command
;
181 /* List of items that should move to the end of the menu bar. */
182 Lisp_Object Vmenu_bar_final_items
;
184 /* Non-nil means show the equivalent key-binding for
185 any M-x command that has one.
186 The value can be a length of time to show the message for.
187 If the value is non-nil and not a number, we wait 2 seconds. */
188 Lisp_Object Vsuggest_key_bindings
;
190 /* Character that causes a quit. Normally C-g.
192 If we are running on an ordinary terminal, this must be an ordinary
193 ASCII char, since we want to make it our interrupt character.
195 If we are not running on an ordinary terminal, it still needs to be
196 an ordinary ASCII char. This character needs to be recognized in
197 the input interrupt handler. At this point, the keystroke is
198 represented as a struct input_event, while the desired quit
199 character is specified as a lispy event. The mapping from struct
200 input_events to lispy events cannot run in an interrupt handler,
201 and the reverse mapping is difficult for anything but ASCII
204 FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an
208 extern Lisp_Object current_global_map
;
209 extern int minibuf_level
;
211 /* If non-nil, this is a map that overrides all other local maps. */
212 Lisp_Object Voverriding_local_map
;
214 /* If non-nil, Voverriding_local_map applies to the menu bar. */
215 Lisp_Object Voverriding_local_map_menu_flag
;
217 /* Keymap that defines special misc events that should
218 be processed immediately at a low level. */
219 Lisp_Object Vspecial_event_map
;
221 /* Current depth in recursive edits. */
222 int command_loop_level
;
224 /* Total number of times command_loop has read a key sequence. */
227 /* Last input character read as a command. */
228 Lisp_Object last_command_char
;
230 /* Last input character read as a command, not counting menus
231 reached by the mouse. */
232 Lisp_Object last_nonmenu_event
;
234 /* Last input character read for any purpose. */
235 Lisp_Object last_input_char
;
237 /* If not Qnil, a list of objects to be read as subsequent command input. */
238 Lisp_Object Vunread_command_events
;
240 /* If not -1, an event to be read as subsequent command input. */
241 int unread_command_char
;
243 /* If not Qnil, this is a switch-frame event which we decided to put
244 off until the end of a key sequence. This should be read as the
245 next command input, after any unread_command_events.
247 read_key_sequence uses this to delay switch-frame events until the
248 end of the key sequence; Fread_char uses it to put off switch-frame
249 events until a non-ASCII event is acceptable as input. */
250 Lisp_Object unread_switch_frame
;
252 /* A mask of extra modifier bits to put into every keyboard char. */
253 int extra_keyboard_modifiers
;
255 /* Char to use as prefix when a meta character is typed in.
256 This is bound on entry to minibuffer in case ESC is changed there. */
258 Lisp_Object meta_prefix_char
;
260 /* Last size recorded for a current buffer which is not a minibuffer. */
261 static int last_non_minibuf_size
;
263 /* Number of idle seconds before an auto-save and garbage collection. */
264 static Lisp_Object Vauto_save_timeout
;
266 /* Total number of times read_char has returned. */
269 /* Total number of times read_char has returned, outside of macros. */
270 int num_nonmacro_input_chars
;
272 /* Auto-save automatically when this many characters have been typed
273 since the last time. */
275 static int auto_save_interval
;
277 /* Value of num_nonmacro_input_chars as of last auto save. */
281 /* The command being executed by the command loop.
282 Commands may set this, and the value set will be copied into
283 current_kboard->Vlast_command instead of the actual command. */
284 Lisp_Object this_command
;
286 /* The value of point when the last command was executed. */
287 int last_point_position
;
289 /* The buffer that was current when the last command was started. */
290 Lisp_Object last_point_position_buffer
;
293 /* The frame in which the last input event occurred, or Qmacro if the
294 last event came from a macro. We use this to determine when to
295 generate switch-frame events. This may be cleared by functions
296 like Fselect_frame, to make sure that a switch-frame event is
297 generated by the next character. */
298 Lisp_Object internal_last_event_frame
;
301 /* A user-visible version of the above, intended to allow users to
302 figure out where the last event came from, if the event doesn't
303 carry that information itself (i.e. if it was a character). */
304 Lisp_Object Vlast_event_frame
;
306 /* The timestamp of the last input event we received from the X server.
307 X Windows wants this for selection ownership. */
308 unsigned long last_event_timestamp
;
310 Lisp_Object Qself_insert_command
;
311 Lisp_Object Qforward_char
;
312 Lisp_Object Qbackward_char
;
313 Lisp_Object Qundefined
;
315 /* read_key_sequence stores here the command definition of the
316 key sequence that it reads. */
317 Lisp_Object read_key_sequence_cmd
;
319 /* Form to evaluate (if non-nil) when Emacs is started. */
320 Lisp_Object Vtop_level
;
322 /* User-supplied string to translate input characters through. */
323 Lisp_Object Vkeyboard_translate_table
;
325 /* Keymap mapping ASCII function key sequences onto their preferred forms. */
326 extern Lisp_Object Vfunction_key_map
;
328 /* Another keymap that maps key sequences into key sequences.
329 This one takes precedence over ordinary definitions. */
330 extern Lisp_Object Vkey_translation_map
;
332 /* Non-nil means deactivate the mark at end of this command. */
333 Lisp_Object Vdeactivate_mark
;
335 /* Menu bar specified in Lucid Emacs fashion. */
337 Lisp_Object Vlucid_menu_bar_dirty_flag
;
338 Lisp_Object Qrecompute_lucid_menubar
, Qactivate_menubar_hook
;
340 /* Hooks to run before and after each command. */
341 Lisp_Object Qpre_command_hook
, Vpre_command_hook
;
342 Lisp_Object Qpost_command_hook
, Vpost_command_hook
;
343 Lisp_Object Qcommand_hook_internal
, Vcommand_hook_internal
;
344 /* Hook run after a command if there's no more input soon. */
345 Lisp_Object Qpost_command_idle_hook
, Vpost_command_idle_hook
;
347 /* Delay time in microseconds before running post-command-idle-hook. */
348 int post_command_idle_delay
;
350 /* List of deferred actions to be performed at a later time.
351 The precise format isn't relevant here; we just check whether it is nil. */
352 Lisp_Object Vdeferred_action_list
;
354 /* Function to call to handle deferred actions, when there are any. */
355 Lisp_Object Vdeferred_action_function
;
356 Lisp_Object Qdeferred_action_function
;
358 /* File in which we write all commands we read. */
361 /* Nonzero if input is available. */
364 /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should
365 keep 0200 bit in input chars. 0 to ignore the 0200 bit. */
369 extern char *pending_malloc_warning
;
371 /* Circular buffer for pre-read keyboard input. */
372 static struct input_event kbd_buffer
[KBD_BUFFER_SIZE
];
374 /* Vector to GCPRO the frames and windows mentioned in kbd_buffer.
376 The interrupt-level event handlers will never enqueue an event on a
377 frame which is not in Vframe_list, and once an event is dequeued,
378 internal_last_event_frame or the event itself points to the frame.
381 But while the event is sitting in the queue, it's completely
382 unprotected. Suppose the user types one command which will run for
383 a while and then delete a frame, and then types another event at
384 the frame that will be deleted, before the command gets around to
385 it. Suppose there are no references to this frame elsewhere in
386 Emacs, and a GC occurs before the second event is dequeued. Now we
387 have an event referring to a freed frame, which will crash Emacs
390 Similar things happen when an event on a scroll bar is enqueued; the
391 window may be deleted while the event is in the queue.
393 So, we use this vector to protect the frame_or_window field in the
394 event queue. That way, they'll be dequeued as dead frames or
395 windows, but still valid lisp objects.
397 If kbd_buffer[i].kind != no_event, then
398 (XVECTOR (kbd_buffer_frame_or_window)->contents[i]
399 == kbd_buffer[i].frame_or_window. */
400 static Lisp_Object kbd_buffer_frame_or_window
;
402 /* Pointer to next available character in kbd_buffer.
403 If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
404 This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the
405 next available char is in kbd_buffer[0]. */
406 static struct input_event
*kbd_fetch_ptr
;
408 /* Pointer to next place to store character in kbd_buffer. This
409 may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
410 character should go in kbd_buffer[0]. */
411 static volatile struct input_event
*kbd_store_ptr
;
413 /* The above pair of variables forms a "queue empty" flag. When we
414 enqueue a non-hook event, we increment kbd_store_ptr. When we
415 dequeue a non-hook event, we increment kbd_fetch_ptr. We say that
416 there is input available iff the two pointers are not equal.
418 Why not just have a flag set and cleared by the enqueuing and
419 dequeuing functions? Such a flag could be screwed up by interrupts
420 at inopportune times. */
422 /* If this flag is non-nil, we check mouse_moved to see when the
423 mouse moves, and motion events will appear in the input stream.
424 Otherwise, mouse motion is ignored. */
425 static Lisp_Object do_mouse_tracking
;
427 /* Symbols to head events. */
428 Lisp_Object Qmouse_movement
;
429 Lisp_Object Qscroll_bar_movement
;
430 Lisp_Object Qswitch_frame
;
431 Lisp_Object Qdelete_frame
;
432 Lisp_Object Qiconify_frame
;
433 Lisp_Object Qmake_frame_visible
;
435 /* Symbols to denote kinds of events. */
436 Lisp_Object Qfunction_key
;
437 Lisp_Object Qmouse_click
;
438 Lisp_Object Qtimer_event
;
439 /* Lisp_Object Qmouse_movement; - also an event header */
441 /* Properties of event headers. */
442 Lisp_Object Qevent_kind
;
443 Lisp_Object Qevent_symbol_elements
;
445 Lisp_Object Qmenu_enable
;
447 /* An event header symbol HEAD may have a property named
448 Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS);
449 BASE is the base, unmodified version of HEAD, and MODIFIERS is the
450 mask of modifiers applied to it. If present, this is used to help
451 speed up parse_modifiers. */
452 Lisp_Object Qevent_symbol_element_mask
;
454 /* An unmodified event header BASE may have a property named
455 Qmodifier_cache, which is an alist mapping modifier masks onto
456 modified versions of BASE. If present, this helps speed up
458 Lisp_Object Qmodifier_cache
;
460 /* Symbols to use for parts of windows. */
461 Lisp_Object Qmode_line
;
462 Lisp_Object Qvertical_line
;
463 Lisp_Object Qvertical_scroll_bar
;
464 Lisp_Object Qmenu_bar
;
466 extern Lisp_Object Qmenu_enable
;
468 Lisp_Object
recursive_edit_unwind (), command_loop ();
469 Lisp_Object
Fthis_command_keys ();
470 Lisp_Object Qextended_command_history
;
471 EMACS_TIME
timer_check ();
473 extern char *x_get_keysym_name ();
475 Lisp_Object Qpolling_period
;
477 /* List of absolute timers. Appears in order of next scheduled event. */
478 Lisp_Object Vtimer_list
;
480 /* List of idle time timers. Appears in order of next scheduled event. */
481 Lisp_Object Vtimer_idle_list
;
483 /* Incremented whenever a timer is run. */
486 extern Lisp_Object Vprint_level
, Vprint_length
;
488 /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt
490 EMACS_TIME
*input_available_clear_time
;
492 /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode.
493 Default is 1 if INTERRUPT_INPUT is defined. */
496 /* Nonzero while interrupts are temporarily deferred during redisplay. */
497 int interrupts_deferred
;
499 /* Nonzero means use ^S/^Q for flow control. */
502 /* Allow m- file to inhibit use of FIONREAD. */
503 #ifdef BROKEN_FIONREAD
507 /* We are unable to use interrupts if FIONREAD is not available,
508 so flush SIGIO so we won't try. */
515 /* If we support a window system, turn on the code to poll periodically
516 to detect C-g. It isn't actually used when doing interrupt input. */
517 #ifdef HAVE_WINDOW_SYSTEM
518 #define POLL_FOR_INPUT
521 /* Non-nil enables Column Number mode. */
522 Lisp_Object Vcolumn_number_mode
;
524 /* Global variable declarations. */
526 /* Function for init_keyboard to call with no args (if nonzero). */
527 void (*keyboard_init_hook
) ();
529 static int read_avail_input ();
530 static void get_input_pending ();
531 static int readable_events ();
532 static Lisp_Object
read_char_x_menu_prompt ();
533 static Lisp_Object
read_char_minibuf_menu_prompt ();
534 static Lisp_Object
make_lispy_event ();
536 static Lisp_Object
make_lispy_movement ();
538 static Lisp_Object
modify_event_symbol ();
539 static Lisp_Object
make_lispy_switch_frame ();
540 static int parse_solitary_modifier ();
542 /* > 0 if we are to echo keystrokes. */
543 static int echo_keystrokes
;
545 /* Nonzero means don't try to suspend even if the operating system seems
547 static int cannot_suspend
;
549 #define min(a,b) ((a)<(b)?(a):(b))
550 #define max(a,b) ((a)>(b)?(a):(b))
552 /* Install the string STR as the beginning of the string of echoing,
553 so that it serves as a prompt for the next character.
554 Also start echoing. */
559 int len
= strlen (str
);
561 if (len
> ECHOBUFSIZE
- 4)
562 len
= ECHOBUFSIZE
- 4;
563 bcopy (str
, current_kboard
->echobuf
, len
);
564 current_kboard
->echoptr
= current_kboard
->echobuf
+ len
;
565 *current_kboard
->echoptr
= '\0';
567 current_kboard
->echo_after_prompt
= len
;
572 /* Add C to the echo string, if echoing is going on.
573 C can be a character, which is printed prettily ("M-C-x" and all that
574 jazz), or a symbol, whose name is printed. */
579 extern char *push_key_description ();
581 if (current_kboard
->immediate_echo
)
583 char *ptr
= current_kboard
->echoptr
;
585 if (ptr
!= current_kboard
->echobuf
)
588 /* If someone has passed us a composite event, use its head symbol. */
593 if (ptr
- current_kboard
->echobuf
> ECHOBUFSIZE
- 6)
596 ptr
= push_key_description (XINT (c
), ptr
);
598 else if (SYMBOLP (c
))
600 struct Lisp_String
*name
= XSYMBOL (c
)->name
;
601 if ((ptr
- current_kboard
->echobuf
) + name
->size
+ 4 > ECHOBUFSIZE
)
603 bcopy (name
->data
, ptr
, name
->size
);
607 if (current_kboard
->echoptr
== current_kboard
->echobuf
610 strcpy (ptr
, " (Type ? for further options)");
615 current_kboard
->echoptr
= ptr
;
621 /* Temporarily add a dash to the end of the echo string if it's not
622 empty, so that it serves as a mini-prompt for the very next character. */
626 if (!current_kboard
->immediate_echo
627 && current_kboard
->echoptr
== current_kboard
->echobuf
)
629 /* Do nothing if we just printed a prompt. */
630 if (current_kboard
->echo_after_prompt
631 == current_kboard
->echoptr
- current_kboard
->echobuf
)
633 /* Do nothing if not echoing at all. */
634 if (current_kboard
->echoptr
== 0)
637 /* Put a dash at the end of the buffer temporarily,
638 but make it go away when the next character is added. */
639 current_kboard
->echoptr
[0] = '-';
640 current_kboard
->echoptr
[1] = 0;
645 /* Display the current echo string, and begin echoing if not already
650 if (!current_kboard
->immediate_echo
)
653 current_kboard
->immediate_echo
= 1;
655 for (i
= 0; i
< this_command_key_count
; i
++)
658 c
= XVECTOR (this_command_keys
)->contents
[i
];
659 if (! (EVENT_HAS_PARAMETERS (c
)
660 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
667 message1_nolog (current_kboard
->echobuf
);
670 if (waiting_for_input
&& !NILP (Vquit_flag
))
671 quit_throw_to_read_char ();
674 /* Turn off echoing, for the start of a new command. */
678 current_kboard
->immediate_echo
= 0;
679 current_kboard
->echoptr
= current_kboard
->echobuf
;
680 current_kboard
->echo_after_prompt
= -1;
681 ok_to_echo_at_next_pause
= 0;
684 /* Return the length of the current echo string. */
689 return current_kboard
->echoptr
- current_kboard
->echobuf
;
692 /* Truncate the current echo message to its first LEN chars.
693 This and echo_char get used by read_key_sequence when the user
694 switches frames while entering a key sequence. */
700 current_kboard
->echobuf
[len
] = '\0';
701 current_kboard
->echoptr
= current_kboard
->echobuf
+ len
;
702 truncate_echo_area (len
);
706 /* Functions for manipulating this_command_keys. */
708 add_command_key (key
)
711 int size
= XVECTOR (this_command_keys
)->size
;
713 /* If reset-this-command-length was called recently, obey it now.
714 See the doc string of that function for an explanation of why. */
715 if (before_command_restore_flag
)
717 this_command_key_count
= before_command_key_count_1
;
718 echo_truncate (before_command_echo_length_1
);
719 before_command_restore_flag
= 0;
722 if (this_command_key_count
>= size
)
724 Lisp_Object new_keys
;
726 new_keys
= Fmake_vector (make_number (size
* 2), Qnil
);
727 bcopy (XVECTOR (this_command_keys
)->contents
,
728 XVECTOR (new_keys
)->contents
,
729 size
* sizeof (Lisp_Object
));
731 this_command_keys
= new_keys
;
734 XVECTOR (this_command_keys
)->contents
[this_command_key_count
++] = key
;
740 int count
= specpdl_ptr
- specpdl
;
743 if (command_loop_level
> 0)
745 specbind (Qstandard_output
, Qt
);
746 specbind (Qstandard_input
, Qt
);
749 val
= command_loop ();
751 Fsignal (Qquit
, Qnil
);
753 return unbind_to (count
, Qnil
);
756 /* When an auto-save happens, record the "time", and don't do again soon. */
760 last_auto_save
= num_nonmacro_input_chars
;
763 /* Make an auto save happen as soon as possible at command level. */
765 force_auto_save_soon ()
767 last_auto_save
= - auto_save_interval
- 1;
769 record_asynch_buffer_change ();
772 DEFUN ("recursive-edit", Frecursive_edit
, Srecursive_edit
, 0, 0, "",
773 "Invoke the editor command loop recursively.\n\
774 To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\
775 that tells this function to return.\n\
776 Alternately, `(throw 'exit t)' makes this function signal an error.\n\
777 This function is called by the editor initialization to begin editing.")
780 int count
= specpdl_ptr
- specpdl
;
783 command_loop_level
++;
784 update_mode_lines
= 1;
786 record_unwind_protect (recursive_edit_unwind
,
788 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
792 return unbind_to (count
, Qnil
);
796 recursive_edit_unwind (buffer
)
800 Fset_buffer (buffer
);
802 command_loop_level
--;
803 update_mode_lines
= 1;
811 #if 0 /* Theory: if there's anything in Vunread_command_events,
812 it will right away be read by read_key_sequence,
813 and then if we do switch KBOARDS, it will go into the side
814 queue then. So we don't need to do anything special here -- rms. */
815 if (CONSP (Vunread_command_events
))
817 current_kboard
->kbd_queue
818 = nconc2 (Vunread_command_events
, current_kboard
->kbd_queue
);
819 current_kboard
->kbd_queue_has_data
= 1;
821 Vunread_command_events
= Qnil
;
827 /* Switch to the single-kboard state, making current_kboard
828 the only KBOARD from which further input is accepted. */
831 single_kboard_state ()
838 /* Maintain a stack of kboards, so other parts of Emacs
839 can switch temporarily to the kboard of a given frame
840 and then revert to the previous status. */
845 struct kboard_stack
*next
;
848 static struct kboard_stack
*kboard_stack
;
851 push_frame_kboard (f
)
855 struct kboard_stack
*p
856 = (struct kboard_stack
*) xmalloc (sizeof (struct kboard_stack
));
858 p
->next
= kboard_stack
;
859 p
->kboard
= current_kboard
;
862 current_kboard
= FRAME_KBOARD (f
);
870 struct kboard_stack
*p
= kboard_stack
;
871 current_kboard
= p
->kboard
;
872 kboard_stack
= p
->next
;
877 /* Handle errors that are not handled at inner levels
878 by printing an error message and returning to the editor command loop. */
884 Lisp_Object old_level
, old_length
;
886 Vstandard_output
= Qt
;
887 Vstandard_input
= Qt
;
888 Vexecuting_macro
= Qnil
;
889 current_kboard
->Vprefix_arg
= Qnil
;
892 /* Avoid unquittable loop if data contains a circular list. */
893 old_level
= Vprint_level
;
894 old_length
= Vprint_length
;
895 XSETFASTINT (Vprint_level
, 10);
896 XSETFASTINT (Vprint_length
, 10);
897 cmd_error_internal (data
, NULL
);
898 Vprint_level
= old_level
;
899 Vprint_length
= old_length
;
903 Vinhibit_quit
= Qnil
;
908 return make_number (0);
911 cmd_error_internal (data
, context
)
919 echo_area_glyphs
= 0;
921 /* If the window system or terminal frame hasn't been initialized
922 yet, or we're not interactive, it's best to dump this message out
923 to stderr and exit. */
924 if (! FRAME_MESSAGE_BUF (selected_frame
)
926 stream
= Qexternal_debugging_output
;
935 write_string_1 (context
, -1, stream
);
937 print_error_message (data
, stream
);
939 /* If the window system or terminal frame hasn't been initialized
940 yet, or we're in -batch mode, this error should cause Emacs to exit. */
941 if (! FRAME_MESSAGE_BUF (selected_frame
)
945 Fkill_emacs (make_number (-1));
949 Lisp_Object
command_loop_1 ();
950 Lisp_Object
command_loop_2 ();
951 Lisp_Object
top_level_1 ();
953 /* Entry to editor-command-loop.
954 This level has the catches for exiting/returning to editor command loop.
955 It returns nil to exit recursive edit, t to abort it. */
960 if (command_loop_level
> 0 || minibuf_level
> 0)
962 return internal_catch (Qexit
, command_loop_2
, Qnil
);
967 internal_catch (Qtop_level
, top_level_1
, Qnil
);
968 internal_catch (Qtop_level
, command_loop_2
, Qnil
);
970 /* End of file in -batch run causes exit here. */
976 /* Here we catch errors in execution of commands within the
977 editing loop, and reenter the editing loop.
978 When there is an error, cmd_error runs and returns a non-nil
979 value to us. A value of nil means that cmd_loop_1 itself
980 returned due to end of file (or end of kbd macro). */
985 register Lisp_Object val
;
988 val
= internal_condition_case (command_loop_1
, Qerror
, cmd_error
);
997 return Feval (Vtop_level
);
1003 /* On entry to the outer level, run the startup file */
1004 if (!NILP (Vtop_level
))
1005 internal_condition_case (top_level_2
, Qerror
, cmd_error
);
1006 else if (!NILP (Vpurify_flag
))
1007 message ("Bare impure Emacs (standard Lisp code not loaded)");
1009 message ("Bare Emacs (standard Lisp code not loaded)");
1013 DEFUN ("top-level", Ftop_level
, Stop_level
, 0, 0, "",
1014 "Exit all recursive editing levels.")
1017 Fthrow (Qtop_level
, Qnil
);
1020 DEFUN ("exit-recursive-edit", Fexit_recursive_edit
, Sexit_recursive_edit
, 0, 0, "",
1021 "Exit from the innermost recursive edit or minibuffer.")
1024 if (command_loop_level
> 0 || minibuf_level
> 0)
1025 Fthrow (Qexit
, Qnil
);
1027 error ("No recursive edit is in progress");
1030 DEFUN ("abort-recursive-edit", Fabort_recursive_edit
, Sabort_recursive_edit
, 0, 0, "",
1031 "Abort the command that requested this recursive edit or minibuffer input.")
1034 if (command_loop_level
> 0 || minibuf_level
> 0)
1037 error ("No recursive edit is in progress");
1040 /* This is the actual command reading loop,
1041 sans error-handling encapsulation. */
1043 Lisp_Object
Fcommand_execute ();
1044 static int read_key_sequence ();
1045 void safe_run_hooks ();
1050 Lisp_Object cmd
, tem
;
1053 Lisp_Object keybuf
[30];
1058 struct buffer
*prev_buffer
;
1060 int was_locked
= single_kboard
;
1063 current_kboard
->Vprefix_arg
= Qnil
;
1064 Vdeactivate_mark
= Qnil
;
1065 waiting_for_input
= 0;
1070 this_command_key_count
= 0;
1072 /* Make sure this hook runs after commands that get errors and
1073 throw to top level. */
1074 /* Note that the value cell will never directly contain nil
1075 if the symbol is a local variable. */
1076 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1077 safe_run_hooks (Qpost_command_hook
);
1079 if (!NILP (Vdeferred_action_list
))
1080 call0 (Vdeferred_action_function
);
1082 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1084 if (NILP (Vunread_command_events
)
1085 && NILP (Vexecuting_macro
)
1086 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1)))
1087 safe_run_hooks (Qpost_command_idle_hook
);
1090 /* Do this after running Vpost_command_hook, for consistency. */
1091 current_kboard
->Vlast_command
= this_command
;
1095 /* Make sure the current window's buffer is selected. */
1096 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
1097 set_buffer_internal (XBUFFER (XWINDOW (selected_window
)->buffer
));
1099 /* Display any malloc warning that just came out. Use while because
1100 displaying one warning can cause another. */
1102 while (pending_malloc_warning
)
1103 display_malloc_warning ();
1107 Vdeactivate_mark
= Qnil
;
1109 /* If minibuffer on and echo area in use,
1110 wait 2 sec and redraw minibuffer. */
1112 if (minibuf_level
&& echo_area_glyphs
1113 && EQ (minibuf_window
, echo_area_window
))
1115 /* Bind inhibit-quit to t so that C-g gets read in
1116 rather than quitting back to the minibuffer. */
1117 int count
= specpdl_ptr
- specpdl
;
1118 specbind (Qinhibit_quit
, Qt
);
1119 Fsit_for (make_number (2), Qnil
, Qnil
);
1120 unbind_to (count
, Qnil
);
1122 /* Clear the echo area. */
1125 /* If a C-g came in before, treat it as input now. */
1126 if (!NILP (Vquit_flag
))
1129 Vunread_command_events
= Fcons (make_number (quit_char
), Qnil
);
1134 alloca (0); /* Cause a garbage collection now */
1135 /* Since we can free the most stuff here. */
1136 #endif /* C_ALLOCA */
1140 /* Select the frame that the last event came from. Usually,
1141 switch-frame events will take care of this, but if some lisp
1142 code swallows a switch-frame event, we'll fix things up here.
1143 Is this a good idea? */
1144 if (FRAMEP (internal_last_event_frame
)
1145 && XFRAME (internal_last_event_frame
) != selected_frame
)
1146 Fselect_frame (internal_last_event_frame
, Qnil
);
1149 /* If it has changed current-menubar from previous value,
1150 really recompute the menubar from the value. */
1151 if (! NILP (Vlucid_menu_bar_dirty_flag
)
1152 && !NILP (Ffboundp (Qrecompute_lucid_menubar
)))
1153 call0 (Qrecompute_lucid_menubar
);
1155 before_command_key_count
= this_command_key_count
;
1156 before_command_echo_length
= echo_length ();
1158 this_command
= Qnil
;
1160 /* Read next key sequence; i gets its length. */
1161 i
= read_key_sequence (keybuf
, sizeof keybuf
/ sizeof keybuf
[0],
1166 /* Now we have read a key sequence of length I,
1167 or else I is 0 and we found end of file. */
1169 if (i
== 0) /* End of file -- happens only in */
1170 return Qnil
; /* a kbd macro, at the end. */
1171 /* -1 means read_key_sequence got a menu that was rejected.
1172 Just loop around and read another command. */
1176 this_command_key_count
= 0;
1180 last_command_char
= keybuf
[i
- 1];
1182 /* If the previous command tried to force a specific window-start,
1183 forget about that, in case this command moves point far away
1184 from that position. But also throw away beg_unchanged and
1185 end_unchanged information in that case, so that redisplay will
1186 update the whole window properly. */
1187 if (!NILP (XWINDOW (selected_window
)->force_start
))
1189 XWINDOW (selected_window
)->force_start
= Qnil
;
1190 beg_unchanged
= end_unchanged
= 0;
1193 cmd
= read_key_sequence_cmd
;
1194 if (!NILP (Vexecuting_macro
))
1196 if (!NILP (Vquit_flag
))
1198 Vexecuting_macro
= Qt
;
1199 QUIT
; /* Make some noise. */
1200 /* Will return since macro now empty. */
1204 /* Do redisplay processing after this command except in special
1205 cases identified below that set no_redisplay to 1.
1206 (actually, there's currently no way to prevent the redisplay,
1207 and no_redisplay is ignored.
1208 Perhaps someday we will really implement it.) */
1211 prev_buffer
= current_buffer
;
1212 prev_modiff
= MODIFF
;
1213 last_point_position
= PT
;
1214 XSETBUFFER (last_point_position_buffer
, prev_buffer
);
1216 /* Execute the command. */
1219 /* Note that the value cell will never directly contain nil
1220 if the symbol is a local variable. */
1221 if (!NILP (Vpre_command_hook
) && !NILP (Vrun_hooks
))
1222 safe_run_hooks (Qpre_command_hook
);
1224 if (NILP (this_command
))
1226 /* nil means key is undefined. */
1228 current_kboard
->defining_kbd_macro
= Qnil
;
1229 update_mode_lines
= 1;
1230 current_kboard
->Vprefix_arg
= Qnil
;
1234 if (NILP (current_kboard
->Vprefix_arg
) && ! no_direct
)
1236 /* Recognize some common commands in common situations and
1237 do them directly. */
1238 if (EQ (this_command
, Qforward_char
) && PT
< ZV
)
1240 struct Lisp_Char_Table
*dp
1241 = window_display_table (XWINDOW (selected_window
));
1242 lose
= FETCH_CHAR (PT
);
1245 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1246 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1247 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1248 && (lose
>= 0x20 && lose
< 0x7f)))
1249 : (lose
>= 0x20 && lose
< 0x7f))
1250 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1252 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1254 && !windows_or_buffers_changed
1255 && EQ (current_buffer
->selective_display
, Qnil
)
1256 && !detect_input_pending ()
1257 && NILP (Vcolumn_number_mode
)
1258 && NILP (Vexecuting_macro
))
1259 no_redisplay
= direct_output_forward_char (1);
1262 else if (EQ (this_command
, Qbackward_char
) && PT
> BEGV
)
1264 struct Lisp_Char_Table
*dp
1265 = window_display_table (XWINDOW (selected_window
));
1267 lose
= FETCH_CHAR (PT
);
1269 ? (VECTORP (DISP_CHAR_VECTOR (dp
, lose
))
1270 ? XVECTOR (DISP_CHAR_VECTOR (dp
, lose
))->size
== 1
1271 : (NILP (DISP_CHAR_VECTOR (dp
, lose
))
1272 && (lose
>= 0x20 && lose
< 0x7f)))
1273 : (lose
>= 0x20 && lose
< 0x7f))
1274 && (XFASTINT (XWINDOW (selected_window
)->last_modified
)
1276 && (XFASTINT (XWINDOW (selected_window
)->last_point
)
1278 && !windows_or_buffers_changed
1279 && EQ (current_buffer
->selective_display
, Qnil
)
1280 && !detect_input_pending ()
1281 && NILP (Vcolumn_number_mode
)
1282 && NILP (Vexecuting_macro
))
1283 no_redisplay
= direct_output_forward_char (-1);
1286 else if (EQ (this_command
, Qself_insert_command
)
1287 /* Try this optimization only on ascii keystrokes. */
1288 && INTEGERP (last_command_char
))
1290 unsigned char c
= XINT (last_command_char
);
1293 if (NILP (Vexecuting_macro
)
1294 && !EQ (minibuf_window
, selected_window
))
1296 if (!nonundocount
|| nonundocount
>= 20)
1303 lose
= ((XFASTINT (XWINDOW (selected_window
)->last_modified
)
1305 || (XFASTINT (XWINDOW (selected_window
)->last_point
)
1307 || MODIFF
<= SAVE_MODIFF
1308 || windows_or_buffers_changed
1309 || !EQ (current_buffer
->selective_display
, Qnil
)
1310 || detect_input_pending ()
1311 || !NILP (Vcolumn_number_mode
)
1312 || !NILP (Vexecuting_macro
));
1313 value
= internal_self_insert (c
, 0);
1320 && (PT
== ZV
|| FETCH_CHAR (PT
) == '\n'))
1322 struct Lisp_Char_Table
*dp
1323 = window_display_table (XWINDOW (selected_window
));
1330 obj
= DISP_CHAR_VECTOR (dp
, lose
);
1333 /* Do it only for char codes
1334 that by default display as themselves. */
1335 if (lose
>= 0x20 && lose
<= 0x7e)
1336 no_redisplay
= direct_output_for_insert (lose
);
1338 else if (VECTORP (obj
)
1339 && XVECTOR (obj
)->size
== 1
1340 && (obj
= XVECTOR (obj
)->contents
[0],
1342 /* Insist face not specified in glyph. */
1343 && (XINT (obj
) & ((-1) << 8)) == 0)
1345 = direct_output_for_insert (XINT (obj
));
1349 if (lose
>= 0x20 && lose
<= 0x7e)
1350 no_redisplay
= direct_output_for_insert (lose
);
1357 /* Here for a command that isn't executed directly */
1360 if (NILP (current_kboard
->Vprefix_arg
))
1362 Fcommand_execute (this_command
, Qnil
, Qnil
, Qnil
);
1367 /* Note that the value cell will never directly contain nil
1368 if the symbol is a local variable. */
1369 if (!NILP (Vpost_command_hook
) && !NILP (Vrun_hooks
))
1370 safe_run_hooks (Qpost_command_hook
);
1372 if (!NILP (Vdeferred_action_list
))
1373 safe_run_hooks (Qdeferred_action_function
);
1375 if (!NILP (Vpost_command_idle_hook
) && !NILP (Vrun_hooks
))
1377 if (NILP (Vunread_command_events
)
1378 && NILP (Vexecuting_macro
)
1379 && !NILP (sit_for (0, post_command_idle_delay
, 0, 1)))
1380 safe_run_hooks (Qpost_command_idle_hook
);
1383 /* If there is a prefix argument,
1384 1) We don't want Vlast_command to be ``universal-argument''
1385 (that would be dumb), so don't set Vlast_command,
1386 2) we want to leave echoing on so that the prefix will be
1387 echoed as part of this key sequence, so don't call
1389 3) we want to leave this_command_key_count non-zero, so that
1390 read_char will realize that it is re-reading a character, and
1391 not echo it a second time.
1393 If the command didn't actually create a prefix arg,
1394 but is merely a frame event that is transparent to prefix args,
1395 then the above doesn't apply. */
1396 if (NILP (current_kboard
->Vprefix_arg
) || CONSP (last_command_char
))
1398 current_kboard
->Vlast_command
= this_command
;
1400 this_command_key_count
= 0;
1403 if (!NILP (current_buffer
->mark_active
) && !NILP (Vrun_hooks
))
1405 if (!NILP (Vdeactivate_mark
) && !NILP (Vtransient_mark_mode
))
1407 current_buffer
->mark_active
= Qnil
;
1408 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
1410 else if (current_buffer
!= prev_buffer
|| MODIFF
!= prev_modiff
)
1411 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
1415 /* Install chars successfully executed in kbd macro. */
1417 if (!NILP (current_kboard
->defining_kbd_macro
)
1418 && NILP (current_kboard
->Vprefix_arg
))
1419 finalize_kbd_macro_chars ();
1423 any_kboard_state ();
1428 /* Subroutine for safe_run_hooks: run the hook HOOK. */
1431 safe_run_hooks_1 (hook
)
1434 return call1 (Vrun_hooks
, Vinhibit_quit
);
1437 /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */
1440 safe_run_hooks_error (data
)
1443 Fset (Vinhibit_quit
, Qnil
);
1446 /* If we get an error while running the hook, cause the hook variable
1447 to be nil. Also inhibit quits, so that C-g won't cause the hook
1448 to mysteriously evaporate. */
1451 safe_run_hooks (hook
)
1455 int count
= specpdl_ptr
- specpdl
;
1456 specbind (Qinhibit_quit
, hook
);
1458 internal_condition_case (safe_run_hooks_1
, Qt
, safe_run_hooks_error
);
1460 unbind_to (count
, Qnil
);
1463 /* Number of seconds between polling for input. */
1466 /* Nonzero means polling for input is temporarily suppressed. */
1467 int poll_suppress_count
;
1469 /* Nonzero if polling_for_input is actually being used. */
1470 int polling_for_input
;
1472 #ifdef POLL_FOR_INPUT
1474 /* Handle an alarm once each second and read pending input
1475 so as to handle a C-g if it comces in. */
1478 input_poll_signal (signalnum
) /* If we don't have an argument, */
1479 int signalnum
; /* some compilers complain in signal calls. */
1481 /* This causes the call to start_polling at the end
1482 to do its job. It also arranges for a quit or error
1483 from within read_avail_input to resume polling. */
1484 poll_suppress_count
++;
1485 if (interrupt_input_blocked
== 0
1486 && !waiting_for_input
)
1487 read_avail_input (0);
1488 /* Turn on the SIGALRM handler and request another alarm. */
1494 /* Begin signals to poll for input, if they are appropriate.
1495 This function is called unconditionally from various places. */
1499 #ifdef POLL_FOR_INPUT
1500 if (read_socket_hook
&& !interrupt_input
)
1502 poll_suppress_count
--;
1503 if (poll_suppress_count
== 0)
1505 signal (SIGALRM
, input_poll_signal
);
1506 polling_for_input
= 1;
1507 alarm (polling_period
);
1513 /* Nonzero if we are using polling to handle input asynchronously. */
1516 input_polling_used ()
1518 #ifdef POLL_FOR_INPUT
1519 return read_socket_hook
&& !interrupt_input
;
1525 /* Turn off polling. */
1529 #ifdef POLL_FOR_INPUT
1530 if (read_socket_hook
&& !interrupt_input
)
1532 if (poll_suppress_count
== 0)
1534 polling_for_input
= 0;
1537 poll_suppress_count
++;
1542 /* Set the value of poll_suppress_count to COUNT
1543 and start or stop polling accordingly. */
1546 set_poll_suppress_count (count
)
1549 #ifdef POLL_FOR_INPUT
1550 if (count
== 0 && poll_suppress_count
!= 0)
1552 poll_suppress_count
= 1;
1555 else if (count
!= 0 && poll_suppress_count
== 0)
1559 poll_suppress_count
= count
;
1563 /* Bind polling_period to a value at least N.
1564 But don't decrease it. */
1566 bind_polling_period (n
)
1569 #ifdef POLL_FOR_INPUT
1570 int new = polling_period
;
1576 specbind (Qpolling_period
, make_number (new));
1577 /* Start a new alarm with the new period. */
1582 /* Apply the control modifier to CHARACTER. */
1588 /* Save the upper bits here. */
1589 int upper
= c
& ~0177;
1593 /* Everything in the columns containing the upper-case letters
1594 denotes a control character. */
1595 if (c
>= 0100 && c
< 0140)
1599 /* Set the shift modifier for a control char
1600 made from a shifted letter. But only for letters! */
1601 if (oc
>= 'A' && oc
<= 'Z')
1602 c
|= shift_modifier
;
1605 /* The lower-case letters denote control characters too. */
1606 else if (c
>= 'a' && c
<= 'z')
1609 /* Include the bits for control and shift
1610 only if the basic ASCII code can't indicate them. */
1614 /* Replace the high bits. */
1615 c
|= (upper
& ~ctrl_modifier
);
1622 /* Input of single characters from keyboard */
1624 Lisp_Object
print_help ();
1625 static Lisp_Object
kbd_buffer_get_event ();
1626 static void record_char ();
1629 static jmp_buf wrong_kboard_jmpbuf
;
1632 /* read a character from the keyboard; call the redisplay if needed */
1633 /* commandflag 0 means do not do auto-saving, but do do redisplay.
1634 -1 means do not do redisplay, but do do autosaving.
1637 /* The arguments MAPS and NMAPS are for menu prompting.
1638 MAPS is an array of keymaps; NMAPS is the length of MAPS.
1640 PREV_EVENT is the previous input event, or nil if we are reading
1641 the first event of a key sequence.
1643 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
1644 if we used a mouse menu to read the input, or zero otherwise. If
1645 USED_MOUSE_MENU is null, we don't dereference it.
1647 Value is t if we showed a menu and the user rejected it. */
1650 read_char (commandflag
, nmaps
, maps
, prev_event
, used_mouse_menu
)
1654 Lisp_Object prev_event
;
1655 int *used_mouse_menu
;
1657 register Lisp_Object c
;
1659 jmp_buf local_getcjmp
;
1661 int key_already_recorded
= 0;
1662 Lisp_Object tem
, save
;
1663 Lisp_Object also_record
;
1666 before_command_key_count
= this_command_key_count
;
1667 before_command_echo_length
= echo_length ();
1671 if (CONSP (Vunread_command_events
))
1673 c
= XCONS (Vunread_command_events
)->car
;
1674 Vunread_command_events
= XCONS (Vunread_command_events
)->cdr
;
1676 /* Undo what read_char_x_menu_prompt did when it unread
1677 additional keys returned by Fx_popup_menu. */
1679 && (SYMBOLP (XCONS (c
)->car
) || INTEGERP (XCONS (c
)->car
))
1680 && NILP (XCONS (c
)->cdr
))
1683 if (this_command_key_count
== 0)
1689 if (unread_command_char
!= -1)
1691 XSETINT (c
, unread_command_char
);
1692 unread_command_char
= -1;
1694 if (this_command_key_count
== 0)
1700 /* If there is no function key translated before
1701 reset-this-command-lengths takes effect, forget about it. */
1702 before_command_restore_flag
= 0;
1704 if (!NILP (Vexecuting_macro
))
1707 /* We set this to Qmacro; since that's not a frame, nobody will
1708 try to switch frames on us, and the selected window will
1711 Since this event came from a macro, it would be misleading to
1712 leave internal_last_event_frame set to wherever the last
1713 real event came from. Normally, a switch-frame event selects
1714 internal_last_event_frame after each command is read, but
1715 events read from a macro should never cause a new frame to be
1717 Vlast_event_frame
= internal_last_event_frame
= Qmacro
;
1720 /* Exit the macro if we are at the end.
1721 Also, some things replace the macro with t
1722 to force an early exit. */
1723 if (EQ (Vexecuting_macro
, Qt
)
1724 || executing_macro_index
>= XFASTINT (Flength (Vexecuting_macro
)))
1730 c
= Faref (Vexecuting_macro
, make_number (executing_macro_index
));
1731 if (STRINGP (Vexecuting_macro
)
1732 && (XINT (c
) & 0x80))
1733 XSETFASTINT (c
, CHAR_META
| (XINT (c
) & ~0x80));
1735 executing_macro_index
++;
1740 if (!NILP (unread_switch_frame
))
1742 c
= unread_switch_frame
;
1743 unread_switch_frame
= Qnil
;
1745 /* This event should make it into this_command_keys, and get echoed
1746 again, so we go to reread_first, rather than reread. */
1750 if (commandflag
>= 0 && !input_pending
1751 && !detect_input_pending_run_timers (0))
1754 /* Message turns off echoing unless more keystrokes turn it on again. */
1755 if (echo_area_glyphs
&& *echo_area_glyphs
1756 && echo_area_glyphs
!= current_kboard
->echobuf
1757 && ok_to_echo_at_next_pause
!= echo_area_glyphs
)
1760 /* If already echoing, continue. */
1763 /* Try reading a character via menu prompting in the minibuf.
1764 Try this before the sit-for, because the sit-for
1765 would do the wrong thing if we are supposed to do
1766 menu prompting. If EVENT_HAS_PARAMETERS then we are reading
1767 after a mouse event so don't try a minibuf menu. */
1769 if (nmaps
> 0 && INTERACTIVE
1770 && !NILP (prev_event
) && ! EVENT_HAS_PARAMETERS (prev_event
)
1771 /* Don't bring up a menu if we already have another event. */
1772 && NILP (Vunread_command_events
)
1773 && unread_command_char
< 0
1774 && !detect_input_pending_run_timers (0))
1776 c
= read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
);
1779 key_already_recorded
= 1;
1784 /* Make a longjmp point for quits to use, but don't alter getcjmp just yet.
1785 We will do that below, temporarily for short sections of code,
1786 when appropriate. local_getcjmp must be in effect
1787 around any call to sit_for or kbd_buffer_get_event;
1788 it *must not* be in effect when we call redisplay. */
1790 if (_setjmp (local_getcjmp
))
1792 XSETINT (c
, quit_char
);
1794 XSETFRAME (internal_last_event_frame
, selected_frame
);
1795 Vlast_event_frame
= internal_last_event_frame
;
1797 /* If we report the quit char as an event,
1798 don't do so more than once. */
1799 if (!NILP (Vinhibit_quit
))
1804 KBOARD
*kb
= FRAME_KBOARD (selected_frame
);
1805 if (kb
!= current_kboard
)
1807 Lisp_Object
*tailp
= &kb
->kbd_queue
;
1808 /* We shouldn't get here if we were in single-kboard mode! */
1811 while (CONSP (*tailp
))
1812 tailp
= &XCONS (*tailp
)->cdr
;
1815 *tailp
= Fcons (c
, Qnil
);
1816 kb
->kbd_queue_has_data
= 1;
1817 current_kboard
= kb
;
1818 longjmp (wrong_kboard_jmpbuf
, 1);
1825 timer_start_idle ();
1827 /* If in middle of key sequence and minibuffer not active,
1828 start echoing if enough time elapses. */
1830 if (minibuf_level
== 0 && !current_kboard
->immediate_echo
1831 && this_command_key_count
> 0
1833 && echo_keystrokes
> 0
1834 && (echo_area_glyphs
== 0 || *echo_area_glyphs
== 0
1835 || ok_to_echo_at_next_pause
== echo_area_glyphs
))
1839 /* After a mouse event, start echoing right away.
1840 This is because we are probably about to display a menu,
1841 and we don't want to delay before doing so. */
1842 if (EVENT_HAS_PARAMETERS (prev_event
))
1846 save_getcjmp (save_jump
);
1847 restore_getcjmp (local_getcjmp
);
1848 tem0
= sit_for (echo_keystrokes
, 0, 1, 1);
1849 restore_getcjmp (save_jump
);
1855 /* Maybe auto save due to number of keystrokes. */
1857 if (commandflag
!= 0
1858 && auto_save_interval
> 0
1859 && num_nonmacro_input_chars
- last_auto_save
> max (auto_save_interval
, 20)
1860 && !detect_input_pending_run_timers (0))
1862 Fdo_auto_save (Qnil
, Qnil
);
1863 /* Hooks can actually change some buffers in auto save. */
1867 /* Try reading using an X menu.
1868 This is never confused with reading using the minibuf
1869 because the recursive call of read_char in read_char_minibuf_menu_prompt
1870 does not pass on any keymaps. */
1872 if (nmaps
> 0 && INTERACTIVE
1873 && !NILP (prev_event
)
1874 && EVENT_HAS_PARAMETERS (prev_event
)
1875 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
)
1876 /* Don't bring up a menu if we already have another event. */
1877 && NILP (Vunread_command_events
)
1878 && unread_command_char
< 0)
1879 c
= read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
);
1881 /* Maybe autosave and/or garbage collect due to idleness. */
1883 if (INTERACTIVE
&& NILP (c
))
1885 int delay_level
, buffer_size
;
1887 /* Slow down auto saves logarithmically in size of current buffer,
1888 and garbage collect while we're at it. */
1889 if (! MINI_WINDOW_P (XWINDOW (selected_window
)))
1890 last_non_minibuf_size
= Z
- BEG
;
1891 buffer_size
= (last_non_minibuf_size
>> 8) + 1;
1893 while (buffer_size
> 64)
1894 delay_level
++, buffer_size
-= buffer_size
>> 2;
1895 if (delay_level
< 4) delay_level
= 4;
1896 /* delay_level is 4 for files under around 50k, 7 at 100k,
1897 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */
1899 /* Auto save if enough time goes by without input. */
1900 if (commandflag
!= 0
1901 && num_nonmacro_input_chars
> last_auto_save
1902 && INTEGERP (Vauto_save_timeout
)
1903 && XINT (Vauto_save_timeout
) > 0)
1907 save_getcjmp (save_jump
);
1908 restore_getcjmp (local_getcjmp
);
1909 tem0
= sit_for (delay_level
* XFASTINT (Vauto_save_timeout
) / 4,
1911 restore_getcjmp (save_jump
);
1915 Fdo_auto_save (Qnil
, Qnil
);
1917 /* If we have auto-saved and there is still no input
1918 available, garbage collect if there has been enough
1919 consing going on to make it worthwhile. */
1920 if (!detect_input_pending_run_timers (0)
1921 && consing_since_gc
> gc_cons_threshold
/ 2)
1922 Fgarbage_collect ();
1929 /* Read something from current KBOARD's side queue, if possible. */
1933 if (current_kboard
->kbd_queue_has_data
)
1935 if (!CONSP (current_kboard
->kbd_queue
))
1937 c
= XCONS (current_kboard
->kbd_queue
)->car
;
1938 current_kboard
->kbd_queue
1939 = XCONS (current_kboard
->kbd_queue
)->cdr
;
1940 if (NILP (current_kboard
->kbd_queue
))
1941 current_kboard
->kbd_queue_has_data
= 0;
1942 input_pending
= readable_events (0);
1944 if (EVENT_HAS_PARAMETERS (c
)
1945 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qswitch_frame
))
1946 internal_last_event_frame
= XCONS (XCONS (c
)->cdr
)->car
;
1947 Vlast_event_frame
= internal_last_event_frame
;
1953 /* If current_kboard's side queue is empty check the other kboards.
1954 If one of them has data that we have not yet seen here,
1955 switch to it and process the data waiting for it.
1957 Note: if the events queued up for another kboard
1958 have already been seen here, and therefore are not a complete command,
1959 the kbd_queue_has_data field is 0, so we skip that kboard here.
1960 That's to avoid an infinite loop switching between kboards here. */
1961 if (NILP (c
) && !single_kboard
)
1964 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
1965 if (kb
->kbd_queue_has_data
)
1967 current_kboard
= kb
;
1968 longjmp (wrong_kboard_jmpbuf
, 1);
1977 /* Finally, we read from the main queue,
1978 and if that gives us something we can't use yet, we put it on the
1979 appropriate side queue and try again. */
1985 /* Actually read a character, waiting if necessary. */
1986 save_getcjmp (save_jump
);
1987 restore_getcjmp (local_getcjmp
);
1988 c
= kbd_buffer_get_event (&kb
, used_mouse_menu
);
1989 restore_getcjmp (save_jump
);
1992 if (! NILP (c
) && (kb
!= current_kboard
))
1994 Lisp_Object
*tailp
= &kb
->kbd_queue
;
1995 while (CONSP (*tailp
))
1996 tailp
= &XCONS (*tailp
)->cdr
;
1999 *tailp
= Fcons (c
, Qnil
);
2000 kb
->kbd_queue_has_data
= 1;
2004 current_kboard
= kb
;
2005 longjmp (wrong_kboard_jmpbuf
, 1);
2010 /* Terminate Emacs in batch mode if at eof. */
2011 if (noninteractive
&& INTEGERP (c
) && XINT (c
) < 0)
2012 Fkill_emacs (make_number (1));
2016 /* Add in any extra modifiers, where appropriate. */
2017 if ((extra_keyboard_modifiers
& CHAR_CTL
)
2018 || ((extra_keyboard_modifiers
& 0177) < ' '
2019 && (extra_keyboard_modifiers
& 0177) != 0))
2020 XSETINT (c
, make_ctrl_char (XINT (c
)));
2022 /* Transfer any other modifier bits directly from
2023 extra_keyboard_modifiers to c. Ignore the actual character code
2024 in the low 16 bits of extra_keyboard_modifiers. */
2025 XSETINT (c
, XINT (c
) | (extra_keyboard_modifiers
& ~0xff7f & ~CHAR_CTL
));
2030 /* Now that we have read an event, Emacs is not idle--
2031 unless the event was a timer event (not used now). */
2032 if (! (CONSP (c
) && EQ (XCONS (c
)->car
, Qtimer_event
)))
2039 if (commandflag
>= 0
2040 && !input_pending
&& !detect_input_pending_run_timers (0))
2048 /* Buffer switch events are only for internal wakeups
2049 so don't show them to the user. */
2053 if (key_already_recorded
)
2056 /* Process special events within read_char
2057 and loop around to read another event. */
2060 tem
= get_keyelt (access_keymap (get_keymap_1 (Vspecial_event_map
, 0, 0),
2066 int was_locked
= single_kboard
;
2068 last_input_char
= c
;
2069 Fcommand_execute (tem
, Qnil
, Fvector (1, &last_input_char
), Qt
);
2071 /* Resume allowing input from any kboard, if that was true before. */
2073 any_kboard_state ();
2078 /* Wipe the echo area. */
2079 echo_area_glyphs
= 0;
2081 /* Handle things that only apply to characters. */
2084 /* If kbd_buffer_get_event gave us an EOF, return that. */
2088 if (STRINGP (Vkeyboard_translate_table
)
2089 && XSTRING (Vkeyboard_translate_table
)->size
> XFASTINT (c
))
2090 XSETINT (c
, XSTRING (Vkeyboard_translate_table
)->data
[XFASTINT (c
)]);
2091 else if ((VECTORP (Vkeyboard_translate_table
)
2092 && XVECTOR (Vkeyboard_translate_table
)->size
> XFASTINT (c
))
2093 || CHAR_TABLE_P (Vkeyboard_translate_table
))
2096 d
= Faref (Vkeyboard_translate_table
, c
);
2097 /* nil in keyboard-translate-table means no translation. */
2103 /* If this event is a mouse click in the menu bar,
2104 return just menu-bar for now. Modify the mouse click event
2105 so we won't do this twice, then queue it up. */
2106 if (EVENT_HAS_PARAMETERS (c
)
2107 && CONSP (XCONS (c
)->cdr
)
2108 && CONSP (EVENT_START (c
))
2109 && CONSP (XCONS (EVENT_START (c
))->cdr
))
2113 posn
= POSN_BUFFER_POSN (EVENT_START (c
));
2114 /* Handle menu-bar events:
2115 insert the dummy prefix event `menu-bar'. */
2116 if (EQ (posn
, Qmenu_bar
))
2118 /* Change menu-bar to (menu-bar) as the event "position". */
2119 POSN_BUFFER_POSN (EVENT_START (c
)) = Fcons (posn
, Qnil
);
2122 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
2128 if (! NILP (also_record
))
2129 record_char (also_record
);
2133 before_command_key_count
= this_command_key_count
;
2134 before_command_echo_length
= echo_length ();
2136 /* Don't echo mouse motion events. */
2138 && ! (EVENT_HAS_PARAMETERS (c
)
2139 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
2142 if (! NILP (also_record
))
2143 echo_char (also_record
);
2144 /* Once we reread a character, echoing can happen
2145 the next time we pause to read a new one. */
2146 ok_to_echo_at_next_pause
= echo_area_glyphs
;
2149 /* Record this character as part of the current key. */
2150 add_command_key (c
);
2151 if (! NILP (also_record
))
2152 add_command_key (also_record
);
2154 /* Re-reading in the middle of a command */
2156 last_input_char
= c
;
2159 /* Process the help character specially if enabled */
2160 if (!NILP (Vhelp_form
) && help_char_p (c
))
2163 count
= specpdl_ptr
- specpdl
;
2165 record_unwind_protect (Fset_window_configuration
,
2166 Fcurrent_window_configuration (Qnil
));
2168 tem0
= Feval (Vhelp_form
);
2170 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
2174 c
= read_char (0, 0, 0, Qnil
, 0);
2175 while (BUFFERP (c
));
2176 /* Remove the help from the frame */
2177 unbind_to (count
, Qnil
);
2180 if (EQ (c
, make_number (040)))
2184 c
= read_char (0, 0, 0, Qnil
, 0);
2185 while (BUFFERP (c
));
2192 /* Return 1 if should recognize C as "the help character". */
2200 if (EQ (c
, Vhelp_char
))
2202 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
2203 if (EQ (c
, XCONS (tail
)->car
))
2208 /* Record the input event C in various ways. */
2215 XVECTOR (recent_keys
)->contents
[recent_keys_index
] = c
;
2216 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
2217 recent_keys_index
= 0;
2219 /* Write c to the dribble file. If c is a lispy event, write
2220 the event's symbol to the dribble file, in <brackets>. Bleaugh.
2221 If you, dear reader, have a better idea, you've got the source. :-) */
2226 if (XUINT (c
) < 0x100)
2227 putc (XINT (c
), dribble
);
2229 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
2233 Lisp_Object dribblee
;
2235 /* If it's a structured event, take the event header. */
2236 dribblee
= EVENT_HEAD (c
);
2238 if (SYMBOLP (dribblee
))
2240 putc ('<', dribble
);
2241 fwrite (XSYMBOL (dribblee
)->name
->data
, sizeof (char),
2242 XSYMBOL (dribblee
)->name
->size
,
2244 putc ('>', dribble
);
2251 store_kbd_macro_char (c
);
2253 num_nonmacro_input_chars
++;
2260 struct buffer
*old
= current_buffer
;
2261 Fprinc (object
, Qnil
);
2262 set_buffer_internal (XBUFFER (Vstandard_output
));
2263 call0 (intern ("help-mode"));
2264 set_buffer_internal (old
);
2268 /* Copy out or in the info on where C-g should throw to.
2269 This is used when running Lisp code from within get_char,
2270 in case get_char is called recursively.
2271 See read_process_output. */
2276 bcopy (getcjmp
, temp
, sizeof getcjmp
);
2279 restore_getcjmp (temp
)
2282 bcopy (temp
, getcjmp
, sizeof getcjmp
);
2287 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
2288 of this function. */
2291 tracking_off (old_value
)
2292 Lisp_Object old_value
;
2294 do_mouse_tracking
= old_value
;
2295 if (NILP (old_value
))
2297 /* Redisplay may have been preempted because there was input
2298 available, and it assumes it will be called again after the
2299 input has been processed. If the only input available was
2300 the sort that we have just disabled, then we need to call
2302 if (!readable_events (1))
2304 redisplay_preserve_echo_area ();
2305 get_input_pending (&input_pending
, 1);
2310 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
2311 "Evaluate BODY with mouse movement events enabled.\n\
2312 Within a `track-mouse' form, mouse motion generates input events that\n\
2313 you can read with `read-event'.\n\
2314 Normally, mouse motion is ignored.")
2318 int count
= specpdl_ptr
- specpdl
;
2321 record_unwind_protect (tracking_off
, do_mouse_tracking
);
2323 do_mouse_tracking
= Qt
;
2325 val
= Fprogn (args
);
2326 return unbind_to (count
, val
);
2329 /* If mouse has moved on some frame, return one of those frames.
2330 Return 0 otherwise. */
2335 Lisp_Object tail
, frame
;
2337 FOR_EACH_FRAME (tail
, frame
)
2339 if (XFRAME (frame
)->mouse_moved
)
2340 return XFRAME (frame
);
2346 #endif /* HAVE_MOUSE */
2348 /* Low level keyboard/mouse input.
2349 kbd_buffer_store_event places events in kbd_buffer, and
2350 kbd_buffer_get_event retrieves them. */
2352 /* Return true iff there are any events in the queue that read-char
2353 would return. If this returns false, a read-char would block. */
2355 readable_events (do_timers_now
)
2359 timer_check (do_timers_now
);
2361 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2364 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2369 if (current_kboard
->kbd_queue_has_data
)
2375 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
2376 if (kb
->kbd_queue_has_data
)
2382 /* Set this for debugging, to have a way to get out */
2387 event_to_kboard (event
)
2388 struct input_event
*event
;
2391 frame
= event
->frame_or_window
;
2393 frame
= XCONS (frame
)->car
;
2394 else if (WINDOWP (frame
))
2395 frame
= WINDOW_FRAME (XWINDOW (frame
));
2397 /* There are still some events that don't set this field.
2398 For now, just ignore the problem.
2399 Also ignore dead frames here. */
2400 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
2403 return FRAME_KBOARD (XFRAME (frame
));
2407 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
2410 kbd_buffer_store_event (event
)
2411 register struct input_event
*event
;
2413 if (event
->kind
== no_event
)
2416 if (event
->kind
== ascii_keystroke
)
2418 register int c
= event
->code
& 0377;
2420 if (event
->modifiers
& ctrl_modifier
)
2421 c
= make_ctrl_char (c
);
2423 c
|= (event
->modifiers
2424 & (meta_modifier
| alt_modifier
2425 | hyper_modifier
| super_modifier
));
2429 extern SIGTYPE
interrupt_signal ();
2432 struct input_event
*sp
;
2435 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
2436 kb
!= current_kboard
))
2439 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
2440 Fcons (make_number (c
), Qnil
));
2441 kb
->kbd_queue_has_data
= 1;
2442 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
2444 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
2447 if (event_to_kboard (sp
) == kb
)
2449 sp
->kind
= no_event
;
2450 sp
->frame_or_window
= Qnil
;
2458 /* If this results in a quit_char being returned to Emacs as
2459 input, set Vlast_event_frame properly. If this doesn't
2460 get returned to Emacs as an event, the next event read
2461 will set Vlast_event_frame again, so this is safe to do. */
2465 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
2467 focus
= event
->frame_or_window
;
2468 internal_last_event_frame
= focus
;
2469 Vlast_event_frame
= focus
;
2473 last_event_timestamp
= event
->timestamp
;
2474 interrupt_signal ();
2478 if (c
&& c
== stop_character
)
2484 /* Don't insert two buffer_switch_event's in a row.
2485 Just ignore the second one. */
2486 else if (event
->kind
== buffer_switch_event
2487 && kbd_fetch_ptr
!= kbd_store_ptr
2488 && kbd_store_ptr
->kind
== buffer_switch_event
)
2491 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
2492 kbd_store_ptr
= kbd_buffer
;
2494 /* Don't let the very last slot in the buffer become full,
2495 since that would make the two pointers equal,
2496 and that is indistinguishable from an empty buffer.
2497 Discard the event if it would fill the last slot. */
2498 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
2500 volatile struct input_event
*sp
= kbd_store_ptr
;
2501 sp
->kind
= event
->kind
;
2502 if (event
->kind
== selection_request_event
)
2504 /* We must not use the ordinary copying code for this case,
2505 since `part' is an enum and copying it might not copy enough
2507 bcopy (event
, (char *) sp
, sizeof (*event
));
2511 sp
->code
= event
->code
;
2512 sp
->part
= event
->part
;
2513 sp
->frame_or_window
= event
->frame_or_window
;
2514 sp
->modifiers
= event
->modifiers
;
2517 sp
->timestamp
= event
->timestamp
;
2519 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_store_ptr
2521 = event
->frame_or_window
);
2527 /* Read one event from the event buffer, waiting if necessary.
2528 The value is a Lisp object representing the event.
2529 The value is nil for an event that should be ignored,
2530 or that was handled here.
2531 We always read and discard one event. */
2534 kbd_buffer_get_event (kbp
, used_mouse_menu
)
2536 int *used_mouse_menu
;
2540 EMACS_TIME next_timer_delay
;
2546 *kbp
= current_kboard
;
2550 /* Wait until there is input available. */
2553 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2556 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2560 /* If the quit flag is set, then read_char will return
2561 quit_char, so that counts as "available input." */
2562 if (!NILP (Vquit_flag
))
2563 quit_throw_to_read_char ();
2565 /* One way or another, wait until input is available; then, if
2566 interrupt handlers have not read it, read it now. */
2569 wait_for_kbd_input ();
2571 /* Note SIGIO has been undef'd if FIONREAD is missing. */
2575 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2578 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2582 Lisp_Object minus_one
;
2584 XSETINT (minus_one
, -1);
2585 wait_reading_process_input (0, 0, minus_one
, 1);
2587 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
2588 /* Pass 1 for EXPECT since we just waited to have input. */
2589 read_avail_input (1);
2591 #endif /* not VMS */
2594 /* At this point, we know that there is a readable event available
2595 somewhere. If the event queue is empty, then there must be a
2596 mouse movement enabled and available. */
2597 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2599 struct input_event
*event
;
2601 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2605 last_event_timestamp
= event
->timestamp
;
2608 *kbp
= event_to_kboard (event
);
2610 *kbp
= current_kboard
; /* Better than returning null ptr? */
2612 *kbp
= &the_only_kboard
;
2617 /* These two kinds of events get special handling
2618 and don't actually appear to the command loop.
2619 We return nil for them. */
2620 if (event
->kind
== selection_request_event
)
2623 struct input_event copy
;
2625 /* Remove it from the buffer before processing it,
2626 since otherwise swallow_events will see it
2627 and process it again. */
2629 kbd_fetch_ptr
= event
+ 1;
2630 input_pending
= readable_events (0);
2631 x_handle_selection_request (©
);
2633 /* We're getting selection request events, but we don't have
2639 else if (event
->kind
== selection_clear_event
)
2642 struct input_event copy
;
2644 /* Remove it from the buffer before processing it. */
2646 kbd_fetch_ptr
= event
+ 1;
2647 input_pending
= readable_events (0);
2648 x_handle_selection_clear (©
);
2650 /* We're getting selection request events, but we don't have
2655 #if defined (HAVE_X11) || defined (HAVE_NTGUI)
2656 else if (event
->kind
== delete_window_event
)
2658 /* Make an event (delete-frame (FRAME)). */
2659 obj
= Fcons (event
->frame_or_window
, Qnil
);
2660 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
2661 kbd_fetch_ptr
= event
+ 1;
2663 else if (event
->kind
== iconify_event
)
2665 /* Make an event (iconify-frame (FRAME)). */
2666 obj
= Fcons (event
->frame_or_window
, Qnil
);
2667 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
2668 kbd_fetch_ptr
= event
+ 1;
2670 else if (event
->kind
== deiconify_event
)
2672 /* Make an event (make-frame-visible (FRAME)). */
2673 obj
= Fcons (event
->frame_or_window
, Qnil
);
2674 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
2675 kbd_fetch_ptr
= event
+ 1;
2678 else if (event
->kind
== buffer_switch_event
)
2680 /* The value doesn't matter here; only the type is tested. */
2681 XSETBUFFER (obj
, current_buffer
);
2682 kbd_fetch_ptr
= event
+ 1;
2684 #ifdef USE_X_TOOLKIT
2685 else if (event
->kind
== menu_bar_activate_event
)
2687 kbd_fetch_ptr
= event
+ 1;
2688 input_pending
= readable_events (0);
2689 x_activate_menubar (XFRAME (event
->frame_or_window
));
2692 /* Just discard these, by returning nil.
2693 With MULTI_KBOARD, these events are used as placeholders
2694 when we need to randomly delete events from the queue.
2695 (They shouldn't otherwise be found in the buffer,
2696 but on some machines it appears they do show up
2697 even without MULTI_KBOARD.) */
2698 else if (event
->kind
== no_event
)
2699 kbd_fetch_ptr
= event
+ 1;
2701 /* If this event is on a different frame, return a switch-frame this
2702 time, and leave the event in the queue for next time. */
2709 frame
= event
->frame_or_window
;
2711 frame
= XCONS (frame
)->car
;
2712 else if (WINDOWP (frame
))
2713 frame
= WINDOW_FRAME (XWINDOW (frame
));
2715 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
2719 if (! EQ (frame
, internal_last_event_frame
)
2720 && XFRAME (frame
) != selected_frame
)
2721 obj
= make_lispy_switch_frame (frame
);
2722 internal_last_event_frame
= frame
;
2723 #endif /* MULTI_FRAME */
2725 /* If we didn't decide to make a switch-frame event, go ahead
2726 and build a real event from the queue entry. */
2730 obj
= make_lispy_event (event
);
2731 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
2732 /* If this was a menu selection, then set the flag to inhibit
2733 writing to last_nonmenu_event. Don't do this if the event
2734 we're returning is (menu-bar), though; that indicates the
2735 beginning of the menu sequence, and we might as well leave
2736 that as the `event with parameters' for this selection. */
2737 if (event
->kind
== menu_bar_event
2738 && !(CONSP (obj
) && EQ (XCONS (obj
)->car
, Qmenu_bar
))
2740 *used_mouse_menu
= 1;
2743 /* Wipe out this event, to catch bugs. */
2744 event
->kind
= no_event
;
2745 XVECTOR (kbd_buffer_frame_or_window
)->contents
[event
- kbd_buffer
] = Qnil
;
2747 kbd_fetch_ptr
= event
+ 1;
2752 /* Try generating a mouse motion event. */
2753 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2755 FRAME_PTR f
= some_mouse_moved ();
2756 Lisp_Object bar_window
;
2757 enum scroll_bar_part part
;
2761 *kbp
= current_kboard
;
2762 /* Note that this uses F to determine which display to look at.
2763 If there is no valid info, it does not store anything
2764 so x remains nil. */
2766 (*mouse_position_hook
) (&f
, 0, &bar_window
, &part
, &x
, &y
, &time
);
2771 /* Decide if we should generate a switch-frame event. Don't
2772 generate switch-frame events for motion outside of all Emacs
2778 frame
= FRAME_FOCUS_FRAME (f
);
2780 XSETFRAME (frame
, f
);
2782 if (! EQ (frame
, internal_last_event_frame
)
2783 && XFRAME (frame
) != selected_frame
)
2784 obj
= make_lispy_switch_frame (frame
);
2785 internal_last_event_frame
= frame
;
2789 /* If we didn't decide to make a switch-frame event, go ahead and
2790 return a mouse-motion event. */
2791 if (!NILP (x
) && NILP (obj
))
2792 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
2794 #endif /* HAVE_MOUSE */
2796 /* We were promised by the above while loop that there was
2797 something for us to read! */
2800 input_pending
= readable_events (0);
2803 Vlast_event_frame
= internal_last_event_frame
;
2809 /* Process any events that are not user-visible,
2810 then return, without reading any user-visible events. */
2813 swallow_events (do_display
)
2818 while (kbd_fetch_ptr
!= kbd_store_ptr
)
2820 struct input_event
*event
;
2822 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2826 last_event_timestamp
= event
->timestamp
;
2828 /* These two kinds of events get special handling
2829 and don't actually appear to the command loop. */
2830 if (event
->kind
== selection_request_event
)
2833 struct input_event copy
;
2835 /* Remove it from the buffer before processing it,
2836 since otherwise swallow_events called recursively could see it
2837 and process it again. */
2839 kbd_fetch_ptr
= event
+ 1;
2840 input_pending
= readable_events (0);
2841 x_handle_selection_request (©
);
2843 /* We're getting selection request events, but we don't have
2849 else if (event
->kind
== selection_clear_event
)
2852 struct input_event copy
;
2854 /* Remove it from the buffer before processing it, */
2857 kbd_fetch_ptr
= event
+ 1;
2858 input_pending
= readable_events (0);
2859 x_handle_selection_clear (©
);
2861 /* We're getting selection request events, but we don't have
2866 /* Note that timer_event is currently never used. */
2867 else if (event
->kind
== timer_event
)
2869 Lisp_Object tem
, lisp_event
;
2870 int was_locked
= single_kboard
;
2872 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
2873 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
2875 lisp_event
= Fcons (Qtimer_event
,
2876 Fcons (Fcdr (event
->frame_or_window
), Qnil
));
2877 kbd_fetch_ptr
= event
+ 1;
2878 if (kbd_fetch_ptr
== kbd_store_ptr
)
2880 Fcommand_execute (tem
, Qnil
, Fvector (1, &lisp_event
), Qt
);
2883 redisplay_preserve_echo_area ();
2885 /* Resume allowing input from any kboard, if that was true before. */
2887 any_kboard_state ();
2893 old_timers_run
= timers_run
;
2894 get_input_pending (&input_pending
, 1);
2896 if (timers_run
!= old_timers_run
&& do_display
)
2897 redisplay_preserve_echo_area ();
2900 static EMACS_TIME timer_idleness_start_time
;
2902 /* Record the start of when Emacs is idle,
2903 for the sake of running idle-time timers. */
2909 /* If we are already in the idle state, do nothing. */
2910 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2913 EMACS_GET_TIME (timer_idleness_start_time
);
2915 /* Mark all idle-time timers as once again candidates for running. */
2916 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCONS (timers
)->cdr
)
2920 timer
= XCONS (timers
)->car
;
2922 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
2924 XVECTOR (timer
)->contents
[0] = Qnil
;
2928 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
2932 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
2935 /* This is only for debugging. */
2936 struct input_event last_timer_event
;
2938 /* Check whether a timer has fired. To prevent larger problems we simply
2939 disregard elements that are not proper timers. Do not make a circular
2940 timer list for the time being.
2942 Returns the number of seconds to wait until the next timer fires. If a
2943 timer is triggering now, return zero seconds.
2944 If no timer is active, return -1 seconds.
2946 If a timer is ripe, we run it, with quitting turned off.
2948 DO_IT_NOW is now ignored. It used to mean that we should
2949 run the timer directly instead of queueing a timer-event.
2950 Now we always run timers directly. */
2953 timer_check (do_it_now
)
2956 EMACS_TIME nexttime
;
2957 EMACS_TIME now
, idleness_now
;
2958 Lisp_Object timers
, idle_timers
, chosen_timer
;
2959 /* Nonzero if we generate some events. */
2960 int events_generated
= 0;
2961 struct gcpro gcpro1
, gcpro2
, gcpro3
;
2963 EMACS_SET_SECS (nexttime
, -1);
2964 EMACS_SET_USECS (nexttime
, -1);
2966 /* Always consider the ordinary timers. */
2967 timers
= Vtimer_list
;
2968 /* Consider the idle timers only if Emacs is idle. */
2969 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2970 idle_timers
= Vtimer_idle_list
;
2973 chosen_timer
= Qnil
;
2974 GCPRO3 (timers
, idle_timers
, chosen_timer
);
2976 if (CONSP (timers
) || CONSP (idle_timers
))
2978 EMACS_GET_TIME (now
);
2979 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2980 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
2983 while (CONSP (timers
) || CONSP (idle_timers
))
2985 int triggertime
= EMACS_SECS (now
);
2986 Lisp_Object
*vector
;
2987 Lisp_Object timer
, idle_timer
;
2988 EMACS_TIME timer_time
, idle_timer_time
;
2989 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
2991 /* Skip past invalid timers and timers already handled. */
2994 timer
= XCONS (timers
)->car
;
2995 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
2997 timers
= XCONS (timers
)->cdr
;
3000 vector
= XVECTOR (timer
)->contents
;
3002 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
3003 || !INTEGERP (vector
[3])
3004 || ! NILP (vector
[0]))
3006 timers
= XCONS (timers
)->cdr
;
3010 if (!NILP (idle_timers
))
3012 timer
= XCONS (idle_timers
)->car
;
3013 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
3015 idle_timers
= XCONS (idle_timers
)->cdr
;
3018 vector
= XVECTOR (timer
)->contents
;
3020 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
3021 || !INTEGERP (vector
[3])
3022 || ! NILP (vector
[0]))
3024 idle_timers
= XCONS (idle_timers
)->cdr
;
3029 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
3030 based on the next ordinary timer.
3031 TIMER_DIFFERENCE is the distance in time from NOW to when
3032 this timer becomes ripe (negative if it's already ripe). */
3035 timer
= XCONS (timers
)->car
;
3036 vector
= XVECTOR (timer
)->contents
;
3037 EMACS_SET_SECS (timer_time
,
3038 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3039 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
3040 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
3043 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
3044 based on the next idle timer. */
3045 if (!NILP (idle_timers
))
3047 idle_timer
= XCONS (idle_timers
)->car
;
3048 vector
= XVECTOR (idle_timer
)->contents
;
3049 EMACS_SET_SECS (idle_timer_time
,
3050 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3051 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
3052 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
3055 /* Decide which timer is the next timer,
3056 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
3057 Also step down the list where we found that timer. */
3059 if (! NILP (timers
) && ! NILP (idle_timers
))
3062 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
3063 if (EMACS_TIME_NEG_P (temp
))
3065 chosen_timer
= timer
;
3066 timers
= XCONS (timers
)->cdr
;
3067 difference
= timer_difference
;
3071 chosen_timer
= idle_timer
;
3072 idle_timers
= XCONS (idle_timers
)->cdr
;
3073 difference
= idle_timer_difference
;
3076 else if (! NILP (timers
))
3078 chosen_timer
= timer
;
3079 timers
= XCONS (timers
)->cdr
;
3080 difference
= timer_difference
;
3084 chosen_timer
= idle_timer
;
3085 idle_timers
= XCONS (idle_timers
)->cdr
;
3086 difference
= idle_timer_difference
;
3088 vector
= XVECTOR (chosen_timer
)->contents
;
3090 /* If timer is rupe, run it if it hasn't been run. */
3091 if (EMACS_TIME_NEG_P (difference
)
3092 || (EMACS_SECS (difference
) == 0
3093 && EMACS_USECS (difference
) == 0))
3095 if (NILP (vector
[0]))
3097 /* Mark the timer as triggered to prevent problems if the lisp
3098 code fails to reschedule it right. */
3101 /* Run the timer or queue a timer event. */
3104 Lisp_Object tem
, event
;
3105 int was_locked
= single_kboard
;
3106 int count
= specpdl_ptr
- specpdl
;
3108 specbind (Qinhibit_quit
, Qt
);
3110 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
3111 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
3113 event
= Fcons (Qtimer_event
, Fcons (chosen_timer
, Qnil
));
3114 Fcommand_execute (tem
, Qnil
, Fvector (1, &event
), Qt
);
3117 unbind_to (count
, Qnil
);
3119 /* Resume allowing input from any kboard, if that was true before. */
3121 any_kboard_state ();
3123 /* Since we have handled the event,
3124 we don't need to tell the caller to wake up and do it. */
3129 /* Generate a timer event so the caller will handle it. */
3130 struct input_event event
;
3132 event
.kind
= timer_event
;
3133 event
.modifiers
= 0;
3134 event
.x
= event
.y
= Qnil
;
3135 event
.timestamp
= triggertime
;
3136 /* Store the timer in the frame slot. */
3137 event
.frame_or_window
3138 = Fcons (Fselected_frame (), chosen_timer
);
3139 kbd_buffer_store_event (&event
);
3141 last_timer_event
= event
;
3143 /* Tell caller to handle this event right away. */
3144 events_generated
= 1;
3145 EMACS_SET_SECS (nexttime
, 0);
3146 EMACS_SET_USECS (nexttime
, 0);
3148 /* Don't queue more than one event at once.
3149 When Emacs is ready for another, it will
3150 queue the next one. */
3158 /* When we encounter a timer that is still waiting,
3159 return the amount of time to wait before it is ripe. */
3162 /* But if we generated an event,
3163 tell the caller to handle it now. */
3164 if (events_generated
)
3170 /* No timers are pending in the future. */
3171 /* Return 0 if we generated an event, and -1 if not. */
3176 /* Caches for modify_event_symbol. */
3177 static Lisp_Object accent_key_syms
;
3178 static Lisp_Object func_key_syms
;
3179 static Lisp_Object mouse_syms
;
3181 /* This is a list of keysym codes for special "accent" characters.
3182 It parallels lispy_accent_keys. */
3184 static int lispy_accent_codes
[] =
3186 #ifdef XK_dead_circumflex
3191 #ifdef XK_dead_grave
3196 #ifdef XK_dead_tilde
3201 #ifdef XK_dead_diaeresis
3206 #ifdef XK_dead_macron
3211 #ifdef XK_dead_degree
3216 #ifdef XK_dead_acute
3221 #ifdef XK_dead_cedilla
3226 #ifdef XK_dead_breve
3231 #ifdef XK_dead_ogonek
3236 #ifdef XK_dead_caron
3241 #ifdef XK_dead_doubleacute
3242 XK_dead_doubleacute
,
3246 #ifdef XK_dead_abovedot
3253 /* This is a list of Lisp names for special "accent" characters.
3254 It parallels lispy_accent_codes. */
3256 static char *lispy_accent_keys
[] =
3274 #define FUNCTION_KEY_OFFSET 0x0
3276 char *lispy_function_keys
[] =
3280 0, /* VK_LBUTTON 0x01 */
3281 0, /* VK_RBUTTON 0x02 */
3282 "cancel", /* VK_CANCEL 0x03 */
3283 0, /* VK_MBUTTON 0x04 */
3285 0, 0, 0, /* 0x05 .. 0x07 */
3287 "backspace", /* VK_BACK 0x08 */
3288 "tab", /* VK_TAB 0x09 */
3290 0, 0, /* 0x0A .. 0x0B */
3292 "clear", /* VK_CLEAR 0x0C */
3293 "return", /* VK_RETURN 0x0D */
3295 0, 0, /* 0x0E .. 0x0F */
3297 "shift", /* VK_SHIFT 0x10 */
3298 "control", /* VK_CONTROL 0x11 */
3299 "menu", /* VK_MENU 0x12 */
3300 "pause", /* VK_PAUSE 0x13 */
3301 "capital", /* VK_CAPITAL 0x14 */
3303 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
3305 0, /* VK_ESCAPE 0x1B */
3307 0, 0, 0, 0, /* 0x1C .. 0x1F */
3309 0, /* VK_SPACE 0x20 */
3310 "prior", /* VK_PRIOR 0x21 */
3311 "next", /* VK_NEXT 0x22 */
3312 "end", /* VK_END 0x23 */
3313 "home", /* VK_HOME 0x24 */
3314 "left", /* VK_LEFT 0x25 */
3315 "up", /* VK_UP 0x26 */
3316 "right", /* VK_RIGHT 0x27 */
3317 "down", /* VK_DOWN 0x28 */
3318 "select", /* VK_SELECT 0x29 */
3319 "print", /* VK_PRINT 0x2A */
3320 "execute", /* VK_EXECUTE 0x2B */
3321 "snapshot", /* VK_SNAPSHOT 0x2C */
3322 "insert", /* VK_INSERT 0x2D */
3323 "delete", /* VK_DELETE 0x2E */
3324 "help", /* VK_HELP 0x2F */
3326 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
3328 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3330 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
3332 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
3334 0, 0, 0, 0, 0, 0, 0, 0, 0,
3335 0, 0, 0, 0, 0, 0, 0, 0, 0,
3336 0, 0, 0, 0, 0, 0, 0, 0,
3338 "lwindow", /* VK_LWIN 0x5B */
3339 "rwindow", /* VK_RWIN 0x5C */
3340 "apps", /* VK_APPS 0x5D */
3342 0, 0, /* 0x5E .. 0x5F */
3344 "kp-0", /* VK_NUMPAD0 0x60 */
3345 "kp-1", /* VK_NUMPAD1 0x61 */
3346 "kp-2", /* VK_NUMPAD2 0x62 */
3347 "kp-3", /* VK_NUMPAD3 0x63 */
3348 "kp-4", /* VK_NUMPAD4 0x64 */
3349 "kp-5", /* VK_NUMPAD5 0x65 */
3350 "kp-6", /* VK_NUMPAD6 0x66 */
3351 "kp-7", /* VK_NUMPAD7 0x67 */
3352 "kp-8", /* VK_NUMPAD8 0x68 */
3353 "kp-9", /* VK_NUMPAD9 0x69 */
3354 "kp-multiply", /* VK_MULTIPLY 0x6A */
3355 "kp-add", /* VK_ADD 0x6B */
3356 "kp-separator", /* VK_SEPARATOR 0x6C */
3357 "kp-subtract", /* VK_SUBTRACT 0x6D */
3358 "kp-decimal", /* VK_DECIMAL 0x6E */
3359 "kp-divide", /* VK_DIVIDE 0x6F */
3360 "f1", /* VK_F1 0x70 */
3361 "f2", /* VK_F2 0x71 */
3362 "f3", /* VK_F3 0x72 */
3363 "f4", /* VK_F4 0x73 */
3364 "f5", /* VK_F5 0x74 */
3365 "f6", /* VK_F6 0x75 */
3366 "f7", /* VK_F7 0x76 */
3367 "f8", /* VK_F8 0x77 */
3368 "f9", /* VK_F9 0x78 */
3369 "f10", /* VK_F10 0x79 */
3370 "f11", /* VK_F11 0x7A */
3371 "f12", /* VK_F12 0x7B */
3372 "f13", /* VK_F13 0x7C */
3373 "f14", /* VK_F14 0x7D */
3374 "f15", /* VK_F15 0x7E */
3375 "f16", /* VK_F16 0x7F */
3376 "f17", /* VK_F17 0x80 */
3377 "f18", /* VK_F18 0x81 */
3378 "f19", /* VK_F19 0x82 */
3379 "f20", /* VK_F20 0x83 */
3380 "f21", /* VK_F21 0x84 */
3381 "f22", /* VK_F22 0x85 */
3382 "f23", /* VK_F23 0x86 */
3383 "f24", /* VK_F24 0x87 */
3385 0, 0, 0, 0, /* 0x88 .. 0x8B */
3386 0, 0, 0, 0, /* 0x8C .. 0x8F */
3388 "kp-numlock", /* VK_NUMLOCK 0x90 */
3389 "scroll", /* VK_SCROLL 0x91 */
3391 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
3392 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
3393 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
3394 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
3395 "kp-end", /* VK_NUMPAD_END 0x96 */
3396 "kp-home", /* VK_NUMPAD_HOME 0x97 */
3397 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
3398 "kp-up", /* VK_NUMPAD_UP 0x99 */
3399 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
3400 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
3401 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
3402 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
3404 0, 0, /* 0x9E .. 0x9F */
3407 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
3408 * Used only as parameters to GetAsyncKeyState() and GetKeyState().
3409 * No other API or message will distinguish left and right keys this way.
3413 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3414 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3415 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3416 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3417 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3423 "attn", /* VK_ATTN 0xF6 */
3424 "crsel", /* VK_CRSEL 0xF7 */
3425 "exsel", /* VK_EXSEL 0xF8 */
3426 "ereof", /* VK_EREOF 0xF9 */
3427 "play", /* VK_PLAY 0xFA */
3428 "zoom", /* VK_ZOOM 0xFB */
3429 "noname", /* VK_NONAME 0xFC */
3430 "pa1", /* VK_PA1 0xFD */
3431 "oem_clear", /* VK_OEM_CLEAR 0xFE */
3436 #define FUNCTION_KEY_OFFSET 0xff00
3438 /* You'll notice that this table is arranged to be conveniently
3439 indexed by X Windows keysym values. */
3440 static char *lispy_function_keys
[] =
3442 /* X Keysym value */
3444 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */
3452 0, 0, 0, /* 0xff10 */
3454 0, 0, 0, 0, 0, 0, 0,
3457 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */
3458 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */
3459 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
3461 "home", /* 0xff50 */ /* IsCursorKey */
3472 "select", /* 0xff60 */ /* IsMiscFunctionKey */
3483 "break", /* 0xff6b */
3485 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0,
3487 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */
3488 "kp-space", /* 0xff80 */ /* IsKeypadKey */
3489 0, 0, 0, 0, 0, 0, 0, 0,
3490 "kp-tab", /* 0xff89 */
3492 "kp-enter", /* 0xff8d */
3494 "kp-f1", /* 0xff91 */
3498 "kp-home", /* 0xff95 */
3503 "kp-prior", /* kp-page-up */
3504 "kp-next", /* kp-page-down */
3510 0, 0, 0, 0, 0, 0, 0, 0, 0,
3511 "kp-multiply", /* 0xffaa */
3516 "kp-divide", /* 0xffaf */
3517 "kp-0", /* 0xffb0 */
3518 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
3521 "kp-equal", /* 0xffbd */
3522 "f1", /* 0xffbe */ /* IsFunctionKey */
3524 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
3525 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
3526 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
3527 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
3528 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
3529 0, 0, 0, 0, 0, 0, 0, 0,
3530 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
3531 0, 0, 0, 0, 0, 0, 0, "delete"
3534 #endif /* HAVE_NTGUI */
3536 static char *lispy_mouse_names
[] =
3538 "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5"
3541 /* Scroll bar parts. */
3542 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
3544 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
3545 Lisp_Object
*scroll_bar_parts
[] = {
3546 &Qabove_handle
, &Qhandle
, &Qbelow_handle
3550 /* A vector, indexed by button number, giving the down-going location
3551 of currently depressed buttons, both scroll bar and non-scroll bar.
3553 The elements have the form
3554 (BUTTON-NUMBER MODIFIER-MASK . REST)
3555 where REST is the cdr of a position as it would be reported in the event.
3557 The make_lispy_event function stores positions here to tell the
3558 difference between click and drag events, and to store the starting
3559 location to be included in drag events. */
3561 static Lisp_Object button_down_location
;
3563 /* Information about the most recent up-going button event: Which
3564 button, what location, and what time. */
3566 static int last_mouse_button
;
3567 static int last_mouse_x
;
3568 static int last_mouse_y
;
3569 static unsigned long button_down_time
;
3571 /* The maximum time between clicks to make a double-click,
3572 or Qnil to disable double-click detection,
3573 or Qt for no time limit. */
3574 Lisp_Object Vdouble_click_time
;
3576 /* The number of clicks in this multiple-click. */
3578 int double_click_count
;
3580 /* Given a struct input_event, build the lisp event which represents
3581 it. If EVENT is 0, build a mouse movement event from the mouse
3582 movement buffer, which should have a movement event in it.
3584 Note that events must be passed to this function in the order they
3585 are received; this function stores the location of button presses
3586 in order to build drag events when the button is released. */
3589 make_lispy_event (event
)
3590 struct input_event
*event
;
3594 switch (SWITCH_ENUM_CAST (event
->kind
))
3596 /* A simple keystroke. */
3597 case ascii_keystroke
:
3599 Lisp_Object lispy_c
;
3600 int c
= event
->code
& 0377;
3601 /* Turn ASCII characters into control characters
3603 if (event
->modifiers
& ctrl_modifier
)
3604 c
= make_ctrl_char (c
);
3606 /* Add in the other modifier bits. We took care of ctrl_modifier
3607 just above, and the shift key was taken care of by the X code,
3608 and applied to control characters by make_ctrl_char. */
3609 c
|= (event
->modifiers
3610 & (meta_modifier
| alt_modifier
3611 | hyper_modifier
| super_modifier
));
3612 button_down_time
= 0;
3613 XSETFASTINT (lispy_c
, c
);
3617 /* A function key. The symbol may need to have modifier prefixes
3619 case non_ascii_keystroke
:
3620 button_down_time
= 0;
3622 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
3623 if (event
->code
== lispy_accent_codes
[i
])
3624 return modify_event_symbol (i
,
3626 Qfunction_key
, Qnil
,
3627 lispy_accent_keys
, &accent_key_syms
,
3628 (sizeof (lispy_accent_keys
)
3629 / sizeof (lispy_accent_keys
[0])));
3631 /* Handle system-specific keysyms. */
3632 if (event
->code
& (1 << 28))
3634 /* We need to use an alist rather than a vector as the cache
3635 since we can't make a vector long enuf. */
3636 if (NILP (current_kboard
->system_key_syms
))
3637 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
3638 return modify_event_symbol (event
->code
,
3641 current_kboard
->Vsystem_key_alist
,
3642 0, ¤t_kboard
->system_key_syms
,
3646 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
3648 Qfunction_key
, Qnil
,
3649 lispy_function_keys
, &func_key_syms
,
3650 (sizeof (lispy_function_keys
)
3651 / sizeof (lispy_function_keys
[0])));
3654 /* Note that timer_event is currently never used. */
3656 return Fcons (Qtimer_event
, Fcons (Fcdr (event
->frame_or_window
), Qnil
));
3659 /* A mouse click. Figure out where it is, decide whether it's
3660 a press, click or drag, and build the appropriate structure. */
3662 case scroll_bar_click
:
3664 int button
= event
->code
;
3666 Lisp_Object position
;
3667 Lisp_Object
*start_pos_ptr
;
3668 Lisp_Object start_pos
;
3670 if (button
< 0 || button
>= NUM_MOUSE_BUTTONS
)
3673 /* Build the position as appropriate for this mouse click. */
3674 if (event
->kind
== mouse_click
)
3677 FRAME_PTR f
= XFRAME (event
->frame_or_window
);
3682 /* Ignore mouse events that were made on frame that
3683 have been deleted. */
3684 if (! FRAME_LIVE_P (f
))
3687 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
3688 &column
, &row
, NULL
, 1);
3690 #ifndef USE_X_TOOLKIT
3691 /* In the non-toolkit version, clicks on the menu bar
3692 are ordinary button events in the event buffer.
3693 Distinguish them, and invoke the menu.
3695 (In the toolkit version, the toolkit handles the menu bar
3696 and Emacs doesn't know about it until after the user
3697 makes a selection.) */
3698 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
3699 && (event
->modifiers
& down_modifier
))
3701 Lisp_Object items
, item
;
3706 /* Activate the menu bar on the down event. If the
3707 up event comes in before the menu code can deal with it,
3709 if (! (event
->modifiers
& down_modifier
))
3714 items
= FRAME_MENU_BAR_ITEMS (f
);
3715 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 4)
3717 Lisp_Object pos
, string
;
3718 string
= XVECTOR (items
)->contents
[i
+ 1];
3719 pos
= XVECTOR (items
)->contents
[i
+ 3];
3722 if (column
>= XINT (pos
)
3723 && column
< XINT (pos
) + XSTRING (string
)->size
)
3725 item
= XVECTOR (items
)->contents
[i
];
3731 = Fcons (event
->frame_or_window
,
3733 Fcons (Fcons (event
->x
, event
->y
),
3734 Fcons (make_number (event
->timestamp
),
3737 return Fcons (item
, Fcons (position
, Qnil
));
3739 #endif /* not USE_X_TOOLKIT */
3741 window
= window_from_coordinates (f
, column
, row
, &part
);
3743 if (!WINDOWP (window
))
3745 window
= event
->frame_or_window
;
3750 int pixcolumn
, pixrow
;
3751 column
-= XINT (XWINDOW (window
)->left
);
3752 row
-= XINT (XWINDOW (window
)->top
);
3753 glyph_to_pixel_coords (f
, column
, row
, &pixcolumn
, &pixrow
);
3754 XSETINT (event
->x
, pixcolumn
);
3755 XSETINT (event
->y
, pixrow
);
3760 posn
= Qvertical_line
;
3763 buffer_posn_from_coords (XWINDOW (window
),
3770 Fcons (Fcons (event
->x
, event
->y
),
3771 Fcons (make_number (event
->timestamp
),
3777 Lisp_Object portion_whole
;
3780 window
= event
->frame_or_window
;
3781 portion_whole
= Fcons (event
->x
, event
->y
);
3782 part
= *scroll_bar_parts
[(int) event
->part
];
3786 Fcons (Qvertical_scroll_bar
,
3787 Fcons (portion_whole
,
3788 Fcons (make_number (event
->timestamp
),
3789 Fcons (part
, Qnil
)))));
3792 start_pos_ptr
= &XVECTOR (button_down_location
)->contents
[button
];
3794 start_pos
= *start_pos_ptr
;
3795 *start_pos_ptr
= Qnil
;
3797 is_double
= (button
== last_mouse_button
3798 && XINT (event
->x
) == last_mouse_x
3799 && XINT (event
->y
) == last_mouse_y
3800 && button_down_time
!= 0
3801 && (EQ (Vdouble_click_time
, Qt
)
3802 || (INTEGERP (Vdouble_click_time
)
3803 && ((int)(event
->timestamp
- button_down_time
)
3804 < XINT (Vdouble_click_time
)))));
3805 last_mouse_button
= button
;
3806 last_mouse_x
= XINT (event
->x
);
3807 last_mouse_y
= XINT (event
->y
);
3809 /* If this is a button press, squirrel away the location, so
3810 we can decide later whether it was a click or a drag. */
3811 if (event
->modifiers
& down_modifier
)
3815 double_click_count
++;
3816 event
->modifiers
|= ((double_click_count
> 2)
3821 double_click_count
= 1;
3822 button_down_time
= event
->timestamp
;
3823 *start_pos_ptr
= Fcopy_alist (position
);
3826 /* Now we're releasing a button - check the co-ordinates to
3827 see if this was a click or a drag. */
3828 else if (event
->modifiers
& up_modifier
)
3830 /* If we did not see a down before this up,
3831 ignore the up. Probably this happened because
3832 the down event chose a menu item.
3833 It would be an annoyance to treat the release
3834 of the button that chose the menu item
3835 as a separate event. */
3837 if (!CONSP (start_pos
))
3840 event
->modifiers
&= ~up_modifier
;
3841 #if 0 /* Formerly we treated an up with no down as a click event. */
3842 if (!CONSP (start_pos
))
3843 event
->modifiers
|= click_modifier
;
3847 /* The third element of every position should be the (x,y)
3851 down
= Fnth (make_number (2), start_pos
);
3852 if (EQ (event
->x
, XCONS (down
)->car
)
3853 && EQ (event
->y
, XCONS (down
)->cdr
))
3855 event
->modifiers
|= click_modifier
;
3859 button_down_time
= 0;
3860 event
->modifiers
|= drag_modifier
;
3862 /* Don't check is_double; treat this as multiple
3863 if the down-event was multiple. */
3864 if (double_click_count
> 1)
3865 event
->modifiers
|= ((double_click_count
> 2)
3871 /* Every mouse event should either have the down_modifier or
3872 the up_modifier set. */
3876 /* Get the symbol we should use for the mouse click. */
3879 head
= modify_event_symbol (button
,
3882 lispy_mouse_names
, &mouse_syms
,
3883 (sizeof (lispy_mouse_names
)
3884 / sizeof (lispy_mouse_names
[0])));
3885 if (event
->modifiers
& drag_modifier
)
3890 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
3893 Fcons (make_number (double_click_count
),
3901 #endif /* HAVE_MOUSE */
3903 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
3904 case menu_bar_event
:
3905 /* The event value is in the cdr of the frame_or_window slot. */
3906 if (!CONSP (event
->frame_or_window
))
3908 return XCONS (event
->frame_or_window
)->cdr
;
3911 /* The 'kind' field of the event is something we don't recognize. */
3920 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
3922 Lisp_Object bar_window
;
3923 enum scroll_bar_part part
;
3928 /* Is it a scroll bar movement? */
3929 if (frame
&& ! NILP (bar_window
))
3931 Lisp_Object part_sym
;
3933 part_sym
= *scroll_bar_parts
[(int) part
];
3934 return Fcons (Qscroll_bar_movement
,
3935 (Fcons (Fcons (bar_window
,
3936 Fcons (Qvertical_scroll_bar
,
3937 Fcons (Fcons (x
, y
),
3938 Fcons (make_number (time
),
3944 /* Or is it an ordinary mouse movement? */
3946 #endif /* MULTI_FRAME */
3959 /* It's in a frame; which window on that frame? */
3960 pixel_to_glyph_coords (frame
, XINT (x
), XINT (y
), &column
, &row
,
3962 window
= window_from_coordinates (frame
, column
, row
, &area
);
3967 if (WINDOWP (window
))
3969 int pixcolumn
, pixrow
;
3970 column
-= XINT (XWINDOW (window
)->left
);
3971 row
-= XINT (XWINDOW (window
)->top
);
3972 glyph_to_pixel_coords (frame
, column
, row
, &pixcolumn
, &pixrow
);
3973 XSETINT (x
, pixcolumn
);
3974 XSETINT (y
, pixrow
);
3979 posn
= Qvertical_line
;
3982 buffer_posn_from_coords (XWINDOW (window
), column
, row
));
3985 else if (frame
!= 0)
3987 XSETFRAME (window
, frame
);
3999 return Fcons (Qmouse_movement
,
4000 Fcons (Fcons (window
,
4002 Fcons (Fcons (x
, y
),
4003 Fcons (make_number (time
),
4009 #endif /* HAVE_MOUSE */
4011 /* Construct a switch frame event. */
4013 make_lispy_switch_frame (frame
)
4016 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
4019 /* Manipulating modifiers. */
4021 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
4023 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
4024 SYMBOL's name of the end of the modifiers; the string from this
4025 position is the unmodified symbol name.
4027 This doesn't use any caches. */
4030 parse_modifiers_uncached (symbol
, modifier_end
)
4034 struct Lisp_String
*name
;
4038 CHECK_SYMBOL (symbol
, 1);
4041 name
= XSYMBOL (symbol
)->name
;
4043 for (i
= 0; i
+2 <= name
->size
; )
4045 int this_mod_end
= 0;
4048 /* See if the name continues with a modifier word.
4049 Check that the word appears, but don't check what follows it.
4050 Set this_mod and this_mod_end to record what we find. */
4052 switch (name
->data
[i
])
4054 #define SINGLE_LETTER_MOD(BIT) \
4055 (this_mod_end = i + 1, this_mod = BIT)
4058 SINGLE_LETTER_MOD (alt_modifier
);
4062 SINGLE_LETTER_MOD (ctrl_modifier
);
4066 SINGLE_LETTER_MOD (hyper_modifier
);
4070 SINGLE_LETTER_MOD (meta_modifier
);
4074 SINGLE_LETTER_MOD (shift_modifier
);
4078 SINGLE_LETTER_MOD (super_modifier
);
4081 #undef SINGLE_LETTER_MOD
4084 /* If we found no modifier, stop looking for them. */
4085 if (this_mod_end
== 0)
4088 /* Check there is a dash after the modifier, so that it
4089 really is a modifier. */
4090 if (this_mod_end
>= name
->size
|| name
->data
[this_mod_end
] != '-')
4093 /* This modifier is real; look for another. */
4094 modifiers
|= this_mod
;
4095 i
= this_mod_end
+ 1;
4098 /* Should we include the `click' modifier? */
4099 if (! (modifiers
& (down_modifier
| drag_modifier
4100 | double_modifier
| triple_modifier
))
4101 && i
+ 7 == name
->size
4102 && strncmp (name
->data
+ i
, "mouse-", 6) == 0
4103 && ('0' <= name
->data
[i
+ 6] && name
->data
[i
+ 6] <= '9'))
4104 modifiers
|= click_modifier
;
4112 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
4113 prepended to the string BASE[0..BASE_LEN-1].
4114 This doesn't use any caches. */
4116 apply_modifiers_uncached (modifiers
, base
, base_len
)
4121 /* Since BASE could contain nulls, we can't use intern here; we have
4122 to use Fintern, which expects a genuine Lisp_String, and keeps a
4125 (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
4131 /* Only the event queue may use the `up' modifier; it should always
4132 be turned into a click or drag event before presented to lisp code. */
4133 if (modifiers
& up_modifier
)
4136 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
4137 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
4138 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
4139 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
4140 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
4141 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
4142 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
4143 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
4144 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
4145 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
4146 /* The click modifier is denoted by the absence of other modifiers. */
4150 mod_len
= p
- new_mods
;
4154 Lisp_Object new_name
;
4156 new_name
= make_uninit_string (mod_len
+ base_len
);
4157 bcopy (new_mods
, XSTRING (new_name
)->data
, mod_len
);
4158 bcopy (base
, XSTRING (new_name
)->data
+ mod_len
, base_len
);
4160 return Fintern (new_name
, Qnil
);
4165 static char *modifier_names
[] =
4167 "up", "down", "drag", "click", "double", "triple", 0, 0,
4168 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4169 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
4171 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
4173 static Lisp_Object modifier_symbols
;
4175 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
4177 lispy_modifier_list (modifiers
)
4180 Lisp_Object modifier_list
;
4183 modifier_list
= Qnil
;
4184 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
4185 if (modifiers
& (1<<i
))
4186 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
4189 return modifier_list
;
4193 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
4194 where UNMODIFIED is the unmodified form of SYMBOL,
4195 MASK is the set of modifiers present in SYMBOL's name.
4196 This is similar to parse_modifiers_uncached, but uses the cache in
4197 SYMBOL's Qevent_symbol_element_mask property, and maintains the
4198 Qevent_symbol_elements property. */
4201 parse_modifiers (symbol
)
4204 Lisp_Object elements
;
4206 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
4207 if (CONSP (elements
))
4212 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
4213 Lisp_Object unmodified
;
4216 unmodified
= Fintern (make_string (XSYMBOL (symbol
)->name
->data
+ end
,
4217 XSYMBOL (symbol
)->name
->size
- end
),
4220 if (modifiers
& ~(((EMACS_INT
)1 << VALBITS
) - 1))
4222 XSETFASTINT (mask
, modifiers
);
4223 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
4225 /* Cache the parsing results on SYMBOL. */
4226 Fput (symbol
, Qevent_symbol_element_mask
,
4228 Fput (symbol
, Qevent_symbol_elements
,
4229 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
4231 /* Since we know that SYMBOL is modifiers applied to unmodified,
4232 it would be nice to put that in unmodified's cache.
4233 But we can't, since we're not sure that parse_modifiers is
4240 /* Apply the modifiers MODIFIERS to the symbol BASE.
4241 BASE must be unmodified.
4243 This is like apply_modifiers_uncached, but uses BASE's
4244 Qmodifier_cache property, if present. It also builds
4245 Qevent_symbol_elements properties, since it has that info anyway.
4247 apply_modifiers copies the value of BASE's Qevent_kind property to
4248 the modified symbol. */
4250 apply_modifiers (modifiers
, base
)
4254 Lisp_Object cache
, index
, entry
, new_symbol
;
4256 /* Mask out upper bits. We don't know where this value's been. */
4257 modifiers
&= ((EMACS_INT
)1 << VALBITS
) - 1;
4259 /* The click modifier never figures into cache indices. */
4260 cache
= Fget (base
, Qmodifier_cache
);
4261 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
4262 entry
= assq_no_quit (index
, cache
);
4265 new_symbol
= XCONS (entry
)->cdr
;
4268 /* We have to create the symbol ourselves. */
4269 new_symbol
= apply_modifiers_uncached (modifiers
,
4270 XSYMBOL (base
)->name
->data
,
4271 XSYMBOL (base
)->name
->size
);
4273 /* Add the new symbol to the base's cache. */
4274 entry
= Fcons (index
, new_symbol
);
4275 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
4277 /* We have the parsing info now for free, so add it to the caches. */
4278 XSETFASTINT (index
, modifiers
);
4279 Fput (new_symbol
, Qevent_symbol_element_mask
,
4280 Fcons (base
, Fcons (index
, Qnil
)));
4281 Fput (new_symbol
, Qevent_symbol_elements
,
4282 Fcons (base
, lispy_modifier_list (modifiers
)));
4285 /* Make sure this symbol is of the same kind as BASE.
4287 You'd think we could just set this once and for all when we
4288 intern the symbol above, but reorder_modifiers may call us when
4289 BASE's property isn't set right; we can't assume that just
4290 because it has a Qmodifier_cache property it must have its
4291 Qevent_kind set right as well. */
4292 if (NILP (Fget (new_symbol
, Qevent_kind
)))
4296 kind
= Fget (base
, Qevent_kind
);
4298 Fput (new_symbol
, Qevent_kind
, kind
);
4305 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
4306 return a symbol with the modifiers placed in the canonical order.
4307 Canonical order is alphabetical, except for down and drag, which
4308 always come last. The 'click' modifier is never written out.
4310 Fdefine_key calls this to make sure that (for example) C-M-foo
4311 and M-C-foo end up being equivalent in the keymap. */
4314 reorder_modifiers (symbol
)
4317 /* It's hopefully okay to write the code this way, since everything
4318 will soon be in caches, and no consing will be done at all. */
4321 parsed
= parse_modifiers (symbol
);
4322 return apply_modifiers ((int) XINT (XCONS (XCONS (parsed
)->cdr
)->car
),
4323 XCONS (parsed
)->car
);
4327 /* For handling events, we often want to produce a symbol whose name
4328 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
4329 to some base, like the name of a function key or mouse button.
4330 modify_event_symbol produces symbols of this sort.
4332 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
4333 is the name of the i'th symbol. TABLE_SIZE is the number of elements
4336 Alternatively, NAME_ALIST is an alist mapping codes into symbol names.
4337 NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used.
4339 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
4340 persist between calls to modify_event_symbol that it can use to
4341 store a cache of the symbols it's generated for this NAME_TABLE
4342 before. The object stored there may be a vector or an alist.
4344 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
4346 MODIFIERS is a set of modifier bits (as given in struct input_events)
4347 whose prefixes should be applied to the symbol name.
4349 SYMBOL_KIND is the value to be placed in the event_kind property of
4350 the returned symbol.
4352 The symbols we create are supposed to have an
4353 `event-symbol-elements' property, which lists the modifiers present
4354 in the symbol's name. */
4357 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist
,
4358 name_table
, symbol_table
, table_size
)
4361 Lisp_Object symbol_kind
;
4362 Lisp_Object name_alist
;
4364 Lisp_Object
*symbol_table
;
4365 unsigned int table_size
;
4368 Lisp_Object symbol_int
;
4370 /* Get rid of the "vendor-specific" bit here. */
4371 XSETINT (symbol_int
, symbol_num
& 0xffffff);
4373 /* Is this a request for a valid symbol? */
4374 if (symbol_num
< 0 || symbol_num
>= table_size
)
4377 if (CONSP (*symbol_table
))
4378 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
4380 /* If *symbol_table doesn't seem to be initialized properly, fix that.
4381 *symbol_table should be a lisp vector TABLE_SIZE elements long,
4382 where the Nth element is the symbol for NAME_TABLE[N], or nil if
4383 we've never used that symbol before. */
4386 if (! VECTORP (*symbol_table
)
4387 || XVECTOR (*symbol_table
)->size
!= table_size
)
4391 XSETFASTINT (size
, table_size
);
4392 *symbol_table
= Fmake_vector (size
, Qnil
);
4395 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
4398 /* Have we already used this symbol before? */
4401 /* No; let's create it. */
4402 if (!NILP (name_alist
))
4403 value
= Fcdr_safe (Fassq (symbol_int
, name_alist
));
4404 else if (name_table
[symbol_num
])
4405 value
= intern (name_table
[symbol_num
]);
4407 #ifdef HAVE_WINDOW_SYSTEM
4410 char *name
= x_get_keysym_name (symbol_num
);
4412 value
= intern (name
);
4419 sprintf (buf
, "key-%d", symbol_num
);
4420 value
= intern (buf
);
4423 if (CONSP (*symbol_table
))
4424 *symbol_table
= Fcons (value
, *symbol_table
);
4426 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
4428 /* Fill in the cache entries for this symbol; this also
4429 builds the Qevent_symbol_elements property, which the user
4431 apply_modifiers (modifiers
& click_modifier
, value
);
4432 Fput (value
, Qevent_kind
, symbol_kind
);
4435 /* Apply modifiers to that symbol. */
4436 return apply_modifiers (modifiers
, value
);
4439 /* Convert a list that represents an event type,
4440 such as (ctrl meta backspace), into the usual representation of that
4441 event type as a number or a symbol. */
4443 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
4444 "Convert the event description list EVENT-DESC to an event type.\n\
4445 EVENT-DESC should contain one base event type (a character or symbol)\n\
4446 and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\
4447 drag, down, double or triple).\n\
4448 The return value is an event type (a character or symbol) which\n\
4449 has the same base event type and all the specified modifiers.")
4451 Lisp_Object event_desc
;
4459 while (CONSP (rest
))
4464 elt
= XCONS (rest
)->car
;
4466 /* Given a symbol, see if it is a modifier name. */
4468 this = parse_solitary_modifier (elt
);
4472 else if (!NILP (base
))
4473 error ("Two bases given in one event");
4477 rest
= XCONS (rest
)->cdr
;
4480 /* Let the symbol A refer to the character A. */
4481 if (SYMBOLP (base
) && XSYMBOL (base
)->name
->size
== 1)
4482 XSETINT (base
, XSYMBOL (base
)->name
->data
[0]);
4484 if (INTEGERP (base
))
4486 /* Turn (shift a) into A. */
4487 if ((modifiers
& shift_modifier
) != 0
4488 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
4490 XSETINT (base
, XINT (base
) - ('a' - 'A'));
4491 modifiers
&= ~shift_modifier
;
4494 /* Turn (control a) into C-a. */
4495 if (modifiers
& ctrl_modifier
)
4496 return make_number ((modifiers
& ~ctrl_modifier
)
4497 | make_ctrl_char (XINT (base
)));
4499 return make_number (modifiers
| XINT (base
));
4501 else if (SYMBOLP (base
))
4502 return apply_modifiers (modifiers
, base
);
4504 error ("Invalid base event");
4507 /* Try to recognize SYMBOL as a modifier name.
4508 Return the modifier flag bit, or 0 if not recognized. */
4511 parse_solitary_modifier (symbol
)
4514 struct Lisp_String
*name
= XSYMBOL (symbol
)->name
;
4516 switch (name
->data
[0])
4518 #define SINGLE_LETTER_MOD(BIT) \
4519 if (name->size == 1) \
4522 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
4523 if (LEN == name->size \
4524 && ! strncmp (name->data, NAME, LEN)) \
4528 SINGLE_LETTER_MOD (alt_modifier
);
4532 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
4536 SINGLE_LETTER_MOD (ctrl_modifier
);
4540 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
4541 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
4545 SINGLE_LETTER_MOD (hyper_modifier
);
4549 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
4553 SINGLE_LETTER_MOD (meta_modifier
);
4557 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
4561 SINGLE_LETTER_MOD (shift_modifier
);
4565 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
4566 MULTI_LETTER_MOD (super_modifier
, "super", 5);
4567 SINGLE_LETTER_MOD (super_modifier
);
4571 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
4572 MULTI_LETTER_MOD (down_modifier
, "down", 4);
4573 MULTI_LETTER_MOD (double_modifier
, "double", 6);
4577 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
4580 #undef SINGLE_LETTER_MOD
4581 #undef MULTI_LETTER_MOD
4587 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
4588 Such a list is not valid as an event,
4589 but it can be a Lucid-style event type list. */
4592 lucid_event_type_list_p (object
)
4597 if (! CONSP (object
))
4600 for (tail
= object
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
4603 elt
= XCONS (tail
)->car
;
4604 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
4611 /* Store into *addr a value nonzero if terminal input chars are available.
4612 Serves the purpose of ioctl (0, FIONREAD, addr)
4613 but works even if FIONREAD does not exist.
4614 (In fact, this may actually read some input.)
4616 If DO_TIMERS_NOW is nonzero, actually run timer events that are ripe. */
4619 get_input_pending (addr
, do_timers_now
)
4623 /* First of all, have we already counted some input? */
4624 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4626 /* If input is being read as it arrives, and we have none, there is none. */
4627 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
4630 /* Try to read some input and see how much we get. */
4632 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4635 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
4638 gobble_input (expected
)
4643 if (interrupt_input
)
4646 mask
= sigblockx (SIGIO
);
4647 read_avail_input (expected
);
4651 #ifdef POLL_FOR_INPUT
4652 if (read_socket_hook
&& !interrupt_input
&& poll_suppress_count
== 0)
4655 mask
= sigblockx (SIGALRM
);
4656 read_avail_input (expected
);
4662 read_avail_input (expected
);
4666 /* Put a buffer_switch_event in the buffer
4667 so that read_key_sequence will notice the new current buffer. */
4669 record_asynch_buffer_change ()
4671 struct input_event event
;
4674 event
.kind
= buffer_switch_event
;
4675 event
.frame_or_window
= Qnil
;
4678 /* We don't need a buffer-switch event unless Emacs is waiting for input.
4679 The purpose of the event is to make read_key_sequence look up the
4680 keymaps again. If we aren't in read_key_sequence, we don't need one,
4681 and the event could cause trouble by messing up (input-pending-p). */
4682 tem
= Fwaiting_for_user_input_p ();
4686 /* We never need these events if we have no asynchronous subprocesses. */
4690 /* Make sure no interrupt happens while storing the event. */
4692 if (interrupt_input
)
4695 mask
= sigblockx (SIGIO
);
4696 kbd_buffer_store_event (&event
);
4703 kbd_buffer_store_event (&event
);
4710 /* Read any terminal input already buffered up by the system
4711 into the kbd_buffer, but do not wait.
4713 EXPECTED should be nonzero if the caller knows there is some input.
4715 Except on VMS, all input is read by this function.
4716 If interrupt_input is nonzero, this function MUST be called
4717 only when SIGIO is blocked.
4719 Returns the number of keyboard chars read, or -1 meaning
4720 this is a bad time to try to read input. */
4723 read_avail_input (expected
)
4726 struct input_event buf
[KBD_BUFFER_SIZE
];
4730 if (read_socket_hook
)
4731 /* No need for FIONREAD or fcntl; just say don't wait. */
4732 nread
= (*read_socket_hook
) (input_fd
, buf
, KBD_BUFFER_SIZE
,
4733 expected
, expected
);
4736 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
4737 the kbd_buffer can really hold. That may prevent loss
4738 of characters on some systems when input is stuffed at us. */
4739 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
4742 /* Determine how many characters we should *try* to read. */
4745 #else /* not WINDOWSNT */
4747 n_to_read
= dos_keysns ();
4750 #else /* not MSDOS */
4752 /* Find out how much input is available. */
4753 if (ioctl (input_fd
, FIONREAD
, &n_to_read
) < 0)
4754 /* Formerly simply reported no input, but that sometimes led to
4755 a failure of Emacs to terminate.
4756 SIGHUP seems appropriate if we can't reach the terminal. */
4757 /* ??? Is it really right to send the signal just to this process
4758 rather than to the whole process group?
4759 Perhaps on systems with FIONREAD Emacs is alone in its group. */
4760 kill (getpid (), SIGHUP
);
4763 if (n_to_read
> sizeof cbuf
)
4764 n_to_read
= sizeof cbuf
;
4765 #else /* no FIONREAD */
4766 #if defined (USG) || defined (DGUX)
4767 /* Read some input if available, but don't wait. */
4768 n_to_read
= sizeof cbuf
;
4769 fcntl (input_fd
, F_SETFL
, O_NDELAY
);
4774 #endif /* not MSDOS */
4775 #endif /* not WINDOWSNT */
4777 /* Now read; for one reason or another, this will not block.
4778 NREAD is set to the number of chars read. */
4782 cbuf
[0] = dos_keyread ();
4785 nread
= read (input_fd
, cbuf
, n_to_read
);
4787 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
4788 /* The kernel sometimes fails to deliver SIGHUP for ptys.
4789 This looks incorrect, but it isn't, because _BSD causes
4790 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
4791 and that causes a value other than 0 when there is no input. */
4797 /* We used to retry the read if it was interrupted.
4798 But this does the wrong thing when O_NDELAY causes
4799 an EAGAIN error. Does anybody know of a situation
4800 where a retry is actually needed? */
4802 nread
< 0 && (errno
== EAGAIN
4816 #if defined (USG) || defined (DGUX)
4817 fcntl (input_fd
, F_SETFL
, 0);
4818 #endif /* USG or DGUX */
4819 #endif /* no FIONREAD */
4820 for (i
= 0; i
< nread
; i
++)
4822 buf
[i
].kind
= ascii_keystroke
;
4823 buf
[i
].modifiers
= 0;
4824 if (meta_key
== 1 && (cbuf
[i
] & 0x80))
4825 buf
[i
].modifiers
= meta_modifier
;
4829 buf
[i
].code
= cbuf
[i
];
4831 XSETFRAME (buf
[i
].frame_or_window
, selected_frame
);
4833 buf
[i
].frame_or_window
= Qnil
;
4838 /* Scan the chars for C-g and store them in kbd_buffer. */
4839 for (i
= 0; i
< nread
; i
++)
4841 kbd_buffer_store_event (&buf
[i
]);
4842 /* Don't look at input that follows a C-g too closely.
4843 This reduces lossage due to autorepeat on C-g. */
4844 if (buf
[i
].kind
== ascii_keystroke
4845 && buf
[i
].code
== quit_char
)
4851 #endif /* not VMS */
4853 #ifdef SIGIO /* for entire page */
4854 /* Note SIGIO has been undef'd if FIONREAD is missing. */
4857 input_available_signal (signo
)
4860 /* Must preserve main program's value of errno. */
4861 int old_errno
= errno
;
4863 extern int select_alarmed
;
4867 /* USG systems forget handlers when they are used;
4868 must reestablish each time */
4869 signal (signo
, input_available_signal
);
4876 if (input_available_clear_time
)
4877 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
4882 nread
= read_avail_input (1);
4883 /* -1 means it's not ok to read the input now.
4884 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
4885 0 means there was no keyboard input available. */
4890 select_alarmed
= 1; /* Force the select emulator back to life */
4901 /* Send ourselves a SIGIO.
4903 This function exists so that the UNBLOCK_INPUT macro in
4904 blockinput.h can have some way to take care of input we put off
4905 dealing with, without assuming that every file which uses
4906 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
4908 reinvoke_input_signal ()
4911 kill (getpid (), SIGIO
);
4917 /* Return the prompt-string of a sparse keymap.
4918 This is the first element which is a string.
4919 Return nil if there is none. */
4927 register Lisp_Object tem
;
4936 static void menu_bar_item ();
4937 static void menu_bar_one_keymap ();
4939 /* These variables hold the vector under construction within
4940 menu_bar_items and its subroutines, and the current index
4941 for storing into that vector. */
4942 static Lisp_Object menu_bar_items_vector
;
4943 static int menu_bar_items_index
;
4945 /* Return a vector of menu items for a menu bar, appropriate
4946 to the current buffer. Each item has three elements in the vector:
4949 OLD is an old vector we can optionally reuse, or nil. */
4952 menu_bar_items (old
)
4955 /* The number of keymaps we're scanning right now, and the number of
4956 keymaps we have allocated space for. */
4959 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
4960 in the current keymaps, or nil where it is not a prefix. */
4963 Lisp_Object def
, tem
, tail
;
4972 struct gcpro gcpro1
;
4974 /* In order to build the menus, we need to call the keymap
4975 accessors. They all call QUIT. But this function is called
4976 during redisplay, during which a quit is fatal. So inhibit
4977 quitting while building the menus.
4978 We do this instead of specbind because (1) errors will clear it anyway
4979 and (2) this avoids risk of specpdl overflow. */
4980 oquit
= Vinhibit_quit
;
4984 menu_bar_items_vector
= old
;
4986 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
4987 menu_bar_items_index
= 0;
4989 GCPRO1 (menu_bar_items_vector
);
4991 /* Build our list of keymaps.
4992 If we recognize a function key and replace its escape sequence in
4993 keybuf with its symbol, or if the sequence starts with a mouse
4994 click and we need to switch buffers, we jump back here to rebuild
4995 the initial keymaps from the current buffer. */
4999 /* Should overriding-terminal-local-map and overriding-local-map apply? */
5000 if (!NILP (Voverriding_local_map_menu_flag
))
5002 /* Yes, use them (if non-nil) as well as the global map. */
5003 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
5005 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
5006 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
5007 if (!NILP (Voverriding_local_map
))
5008 maps
[nmaps
++] = Voverriding_local_map
;
5012 /* No, so use major and minor mode keymaps. */
5013 nmaps
= current_minor_maps (NULL
, &tmaps
);
5014 maps
= (Lisp_Object
*) alloca ((nmaps
+ 2) * sizeof (maps
[0]));
5015 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
5016 #ifdef USE_TEXT_PROPERTIES
5017 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
5019 maps
[nmaps
++] = current_buffer
->keymap
;
5022 maps
[nmaps
++] = current_global_map
;
5025 /* Look up in each map the dummy prefix key `menu-bar'. */
5029 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
5031 if (! NILP (maps
[mapno
]))
5032 def
= get_keyelt (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0));
5036 tem
= Fkeymapp (def
);
5038 menu_bar_one_keymap (def
);
5041 /* Move to the end those items that should be at the end. */
5043 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5046 int end
= menu_bar_items_index
;
5048 for (i
= 0; i
< end
; i
+= 4)
5049 if (EQ (XCONS (tail
)->car
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5051 Lisp_Object tem0
, tem1
, tem2
, tem3
;
5052 /* Move the item at index I to the end,
5053 shifting all the others forward. */
5054 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
5055 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
5056 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5057 tem3
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3];
5059 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
5060 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5061 (end
- i
- 4) * sizeof (Lisp_Object
));
5062 XVECTOR (menu_bar_items_vector
)->contents
[end
- 4] = tem0
;
5063 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem1
;
5064 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem2
;
5065 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem3
;
5070 /* Add nil, nil, nil at the end. */
5071 i
= menu_bar_items_index
;
5072 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
5075 int newsize
= 2 * i
;
5076 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5077 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5078 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5079 menu_bar_items_vector
= tem
;
5081 /* Add this item. */
5082 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5083 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5084 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5085 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5086 menu_bar_items_index
= i
;
5088 Vinhibit_quit
= oquit
;
5090 return menu_bar_items_vector
;
5093 /* Scan one map KEYMAP, accumulating any menu items it defines
5094 in menu_bar_items_vector. */
5097 menu_bar_one_keymap (keymap
)
5100 Lisp_Object tail
, item
, key
, binding
, item_string
, table
;
5102 /* Loop over all keymap entries that have menu strings. */
5103 for (tail
= keymap
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5105 item
= XCONS (tail
)->car
;
5108 key
= XCONS (item
)->car
;
5109 binding
= XCONS (item
)->cdr
;
5110 if (CONSP (binding
))
5112 item_string
= XCONS (binding
)->car
;
5113 if (STRINGP (item_string
))
5114 menu_bar_item (key
, item_string
, Fcdr (binding
));
5116 else if (EQ (binding
, Qundefined
))
5117 menu_bar_item (key
, Qnil
, binding
);
5119 else if (VECTORP (item
))
5121 /* Loop over the char values represented in the vector. */
5122 int len
= XVECTOR (item
)->size
;
5124 for (c
= 0; c
< len
; c
++)
5126 Lisp_Object character
;
5127 XSETFASTINT (character
, c
);
5128 binding
= XVECTOR (item
)->contents
[c
];
5129 if (CONSP (binding
))
5131 item_string
= XCONS (binding
)->car
;
5132 if (STRINGP (item_string
))
5133 menu_bar_item (key
, item_string
, Fcdr (binding
));
5135 else if (EQ (binding
, Qundefined
))
5136 menu_bar_item (key
, Qnil
, binding
);
5142 /* This is used as the handler when calling internal_condition_case_1. */
5145 menu_bar_item_1 (arg
)
5151 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
5152 If there's already an item for KEY, add this DEF to it. */
5155 menu_bar_item (key
, item_string
, def
)
5156 Lisp_Object key
, item_string
, def
;
5159 Lisp_Object enabled
;
5162 if (EQ (def
, Qundefined
))
5164 /* If a map has an explicit `undefined' as definition,
5165 discard any previously made menu bar item. */
5167 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
5168 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5170 if (menu_bar_items_index
> i
+ 4)
5171 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 4],
5172 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5173 (menu_bar_items_index
- i
- 4) * sizeof (Lisp_Object
));
5174 menu_bar_items_index
-= 4;
5178 /* If there's no definition for this key yet,
5179 just ignore `undefined'. */
5183 /* See if this entry is enabled. */
5188 /* No property, or nil, means enable.
5189 Otherwise, enable if value is not nil. */
5190 tem
= Fget (def
, Qmenu_enable
);
5192 /* (condition-case nil (eval tem)
5194 enabled
= internal_condition_case_1 (Feval
, tem
, Qerror
,
5198 /* Ignore this item if it's not enabled. */
5202 /* Find any existing item for this KEY. */
5203 for (i
= 0; i
< menu_bar_items_index
; i
+= 4)
5204 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5207 /* If we did not find this KEY, add it at the end. */
5208 if (i
== menu_bar_items_index
)
5210 /* If vector is too small, get a bigger one. */
5211 if (i
+ 4 > XVECTOR (menu_bar_items_vector
)->size
)
5214 int newsize
= 2 * i
;
5215 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5216 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5217 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5218 menu_bar_items_vector
= tem
;
5220 /* Add this item. */
5221 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
5222 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = item_string
;
5223 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (def
, Qnil
);
5224 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = make_number (0);
5225 menu_bar_items_index
= i
;
5227 /* We did find an item for this KEY. Add DEF to its list of maps. */
5231 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5232 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = Fcons (def
, old
);
5236 /* Read a character using menus based on maps in the array MAPS.
5237 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
5238 Return t if we displayed a menu but the user rejected it.
5240 PREV_EVENT is the previous input event, or nil if we are reading
5241 the first event of a key sequence.
5243 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
5244 if we used a mouse menu to read the input, or zero otherwise. If
5245 USED_MOUSE_MENU is null, we don't dereference it.
5247 The prompting is done based on the prompt-string of the map
5248 and the strings associated with various map elements.
5250 This can be done with X menus or with menus put in the minibuf.
5251 These are done in different ways, depending on how the input will be read.
5252 Menus using X are done after auto-saving in read-char, getting the input
5253 event from Fx_popup_menu; menus using the minibuf use read_char recursively
5254 and do auto-saving in the inner call of read_char. */
5257 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
5260 Lisp_Object prev_event
;
5261 int *used_mouse_menu
;
5264 register Lisp_Object name
;
5265 Lisp_Object rest
, vector
;
5267 if (used_mouse_menu
)
5268 *used_mouse_menu
= 0;
5270 /* Use local over global Menu maps */
5272 if (! menu_prompting
)
5275 /* Optionally disregard all but the global map. */
5276 if (inhibit_local_menu_bar_menus
)
5278 maps
+= (nmaps
- 1);
5282 /* Get the menu name from the first map that has one (a prompt string). */
5283 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5285 name
= map_prompt (maps
[mapno
]);
5290 /* If we don't have any menus, just read a character normally. */
5295 /* If we got to this point via a mouse click,
5296 use a real menu for mouse selection. */
5297 if (EVENT_HAS_PARAMETERS (prev_event
)
5298 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
))
5300 /* Display the menu and get the selection. */
5301 Lisp_Object
*realmaps
5302 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
5306 /* Use the maps that are not nil. */
5307 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5308 if (!NILP (maps
[mapno
]))
5309 realmaps
[nmaps1
++] = maps
[mapno
];
5311 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
5316 /* If we got multiple events, unread all but
5318 There is no way to prevent those unread events
5319 from showing up later in last_nonmenu_event.
5320 So turn symbol and integer events into lists,
5321 to indicate that they came from a mouse menu,
5322 so that when present in last_nonmenu_event
5323 they won't confuse things. */
5324 for (tem
= XCONS (value
)->cdr
; !NILP (tem
);
5325 tem
= XCONS (tem
)->cdr
)
5326 if (SYMBOLP (XCONS (tem
)->car
)
5327 || INTEGERP (XCONS (tem
)->car
))
5329 = Fcons (XCONS (tem
)->car
, Qnil
);
5331 /* If we got more than one event, put all but the first
5332 onto this list to be read later.
5333 Return just the first event now. */
5334 Vunread_command_events
5335 = nconc2 (XCONS (value
)->cdr
, Vunread_command_events
);
5336 value
= XCONS (value
)->car
;
5338 else if (NILP (value
))
5340 if (used_mouse_menu
)
5341 *used_mouse_menu
= 1;
5344 #endif /* HAVE_MENUS */
5348 /* Buffer in use so far for the minibuf prompts for menu keymaps.
5349 We make this bigger when necessary, and never free it. */
5350 static char *read_char_minibuf_menu_text
;
5351 /* Size of that buffer. */
5352 static int read_char_minibuf_menu_width
;
5355 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
5361 register Lisp_Object name
;
5363 int width
= FRAME_WIDTH (selected_frame
) - 4;
5366 Lisp_Object rest
, vector
;
5369 if (! menu_prompting
)
5372 /* Make sure we have a big enough buffer for the menu text. */
5373 if (read_char_minibuf_menu_text
== 0)
5375 read_char_minibuf_menu_width
= width
+ 4;
5376 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
5378 else if (width
+ 4 > read_char_minibuf_menu_width
)
5380 read_char_minibuf_menu_width
= width
+ 4;
5381 read_char_minibuf_menu_text
5382 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
5384 menu
= read_char_minibuf_menu_text
;
5386 /* Get the menu name from the first map that has one (a prompt string). */
5387 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5389 name
= map_prompt (maps
[mapno
]);
5394 /* If we don't have any menus, just read a character normally. */
5398 /* Prompt string always starts with map's prompt, and a space. */
5399 strcpy (menu
, XSTRING (name
)->data
);
5400 nlength
= XSTRING (name
)->size
;
5401 menu
[nlength
++] = ':';
5402 menu
[nlength
++] = ' ';
5405 /* Start prompting at start of first map. */
5409 /* Present the documented bindings, a line at a time. */
5416 Lisp_Object orig_defn_macro
;
5418 /* Loop over elements of map. */
5423 /* If reached end of map, start at beginning of next map. */
5427 /* At end of last map, wrap around to first map if just starting,
5428 or end this line if already have something on it. */
5432 if (notfirst
|| nobindings
) break;
5437 /* Look at the next element of the map. */
5439 elt
= XVECTOR (vector
)->contents
[idx
];
5441 elt
= Fcar_safe (rest
);
5443 if (idx
< 0 && VECTORP (elt
))
5445 /* If we found a dense table in the keymap,
5446 advanced past it, but start scanning its contents. */
5447 rest
= Fcdr_safe (rest
);
5453 /* An ordinary element. */
5458 s
= Fcar_safe (Fcdr_safe (elt
)); /* alist */
5459 event
= Fcar_safe (elt
);
5463 s
= Fcar_safe (elt
); /* vector */
5464 XSETINT (event
, idx
);
5467 /* Ignore the element if it has no prompt string. */
5468 if (STRINGP (s
) && INTEGERP (event
))
5470 /* 1 if the char to type matches the string. */
5472 Lisp_Object upcased_event
, downcased_event
;
5475 upcased_event
= Fupcase (event
);
5476 downcased_event
= Fdowncase (event
);
5477 char_matches
= (XINT (upcased_event
) == XSTRING (s
)->data
[0]
5478 || XINT (downcased_event
) == XSTRING (s
)->data
[0]);
5480 desc
= Fsingle_key_description (event
);
5482 /* If we have room for the prompt string, add it to this line.
5483 If this is the first on the line, always add it. */
5484 if ((XSTRING (s
)->size
+ i
+ 2
5485 + (char_matches
? 0 : XSTRING (desc
)->size
+ 3))
5491 /* Punctuate between strings. */
5494 strcpy (menu
+ i
, ", ");
5500 /* If the char to type doesn't match the string's
5501 first char, explicitly show what char to type. */
5504 /* Add as much of string as fits. */
5505 thiswidth
= XSTRING (desc
)->size
;
5506 if (thiswidth
+ i
> width
)
5507 thiswidth
= width
- i
;
5508 bcopy (XSTRING (desc
)->data
, menu
+ i
, thiswidth
);
5510 strcpy (menu
+ i
, " = ");
5514 /* Add as much of string as fits. */
5515 thiswidth
= XSTRING (s
)->size
;
5516 if (thiswidth
+ i
> width
)
5517 thiswidth
= width
- i
;
5518 bcopy (XSTRING (s
)->data
, menu
+ i
, thiswidth
);
5524 /* If this element does not fit, end the line now,
5525 and save the element for the next line. */
5526 strcpy (menu
+ i
, "...");
5531 /* Move past this element. */
5532 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
5533 /* Handle reaching end of dense table. */
5538 rest
= Fcdr_safe (rest
);
5542 /* Prompt with that and read response. */
5545 /* Make believe its not a keyboard macro in case the help char
5546 is pressed. Help characters are not recorded because menu prompting
5547 is not used on replay.
5549 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
5550 current_kboard
->defining_kbd_macro
= Qnil
;
5552 obj
= read_char (commandflag
, 0, 0, Qnil
, 0);
5553 while (BUFFERP (obj
));
5554 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
5556 if (!INTEGERP (obj
))
5561 if (! EQ (obj
, menu_prompt_more_char
)
5562 && (!INTEGERP (menu_prompt_more_char
)
5563 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
5565 if (!NILP (current_kboard
->defining_kbd_macro
))
5566 store_kbd_macro_char (obj
);
5569 /* Help char - go round again */
5573 /* Reading key sequences. */
5575 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
5576 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
5577 keymap, or nil otherwise. Return the index of the first keymap in
5578 which KEY has any binding, or NMAPS if no map has a binding.
5580 If KEY is a meta ASCII character, treat it like meta-prefix-char
5581 followed by the corresponding non-meta character. Keymaps in
5582 CURRENT with non-prefix bindings for meta-prefix-char become nil in
5585 If KEY has no bindings in any of the CURRENT maps, NEXT is left
5588 NEXT may be the same array as CURRENT. */
5591 follow_key (key
, nmaps
, current
, defs
, next
)
5593 Lisp_Object
*current
, *defs
, *next
;
5596 int i
, first_binding
;
5599 /* If KEY is a meta ASCII character, treat it like meta-prefix-char
5600 followed by the corresponding non-meta character.
5601 Put the results into DEFS, since we are going to alter that anyway.
5602 Do not alter CURRENT or NEXT. */
5603 if (INTEGERP (key
) && (XINT (key
) & CHAR_META
))
5605 for (i
= 0; i
< nmaps
; i
++)
5606 if (! NILP (current
[i
]))
5609 def
= get_keyelt (access_keymap (current
[i
],
5610 meta_prefix_char
, 1, 0));
5612 /* Note that since we pass the resulting bindings through
5613 get_keymap_1, non-prefix bindings for meta-prefix-char
5615 defs
[i
] = get_keymap_1 (def
, 0, 1);
5621 XSETINT (key
, XFASTINT (key
) & ~CHAR_META
);
5624 first_binding
= nmaps
;
5625 for (i
= nmaps
- 1; i
>= 0; i
--)
5627 if (! NILP (current
[i
]))
5635 defs
[i
] = get_keyelt (access_keymap (map
, key
, 1, 0));
5636 if (! NILP (defs
[i
]))
5643 /* Given the set of bindings we've found, produce the next set of maps. */
5644 if (first_binding
< nmaps
)
5645 for (i
= 0; i
< nmaps
; i
++)
5646 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap_1 (defs
[i
], 0, 1);
5648 return first_binding
;
5651 /* Read a sequence of keys that ends with a non prefix character,
5652 storing it in KEYBUF, a buffer of size BUFSIZE.
5654 Return the length of the key sequence stored.
5655 Return -1 if the user rejected a command menu.
5657 Echo starting immediately unless `prompt' is 0.
5659 Where a key sequence ends depends on the currently active keymaps.
5660 These include any minor mode keymaps active in the current buffer,
5661 the current buffer's local map, and the global map.
5663 If a key sequence has no other bindings, we check Vfunction_key_map
5664 to see if some trailing subsequence might be the beginning of a
5665 function key's sequence. If so, we try to read the whole function
5666 key, and substitute its symbolic name into the key sequence.
5668 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
5669 `double-' events into similar click events, if that would make them
5670 bound. We try to turn `triple-' events first into `double-' events,
5673 If we get a mouse click in a mode line, vertical divider, or other
5674 non-text area, we treat the click as if it were prefixed by the
5675 symbol denoting that area - `mode-line', `vertical-line', or
5678 If the sequence starts with a mouse click, we read the key sequence
5679 with respect to the buffer clicked on, not the current buffer.
5681 If the user switches frames in the midst of a key sequence, we put
5682 off the switch-frame event until later; the next call to
5683 read_char will return it. */
5686 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
5687 can_return_switch_frame
)
5688 Lisp_Object
*keybuf
;
5691 int dont_downcase_last
;
5692 int can_return_switch_frame
;
5694 int count
= specpdl_ptr
- specpdl
;
5696 /* How many keys there are in the current key sequence. */
5699 /* The length of the echo buffer when we started reading, and
5700 the length of this_command_keys when we started reading. */
5704 /* The number of keymaps we're scanning right now, and the number of
5705 keymaps we have allocated space for. */
5707 int nmaps_allocated
= 0;
5709 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
5710 the current keymaps. */
5713 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
5714 in the current keymaps, or nil where it is not a prefix. */
5715 Lisp_Object
*submaps
;
5717 /* The local map to start out with at start of key sequence. */
5718 Lisp_Object orig_local_map
;
5720 /* 1 if we have already considered switching to the local-map property
5721 of the place where a mouse click occurred. */
5722 int localized_local_map
= 0;
5724 /* The index in defs[] of the first keymap that has a binding for
5725 this key sequence. In other words, the lowest i such that
5726 defs[i] is non-nil. */
5729 /* If t < mock_input, then KEYBUF[t] should be read as the next
5732 We use this to recover after recognizing a function key. Once we
5733 realize that a suffix of the current key sequence is actually a
5734 function key's escape sequence, we replace the suffix with the
5735 function key's binding from Vfunction_key_map. Now keybuf
5736 contains a new and different key sequence, so the echo area,
5737 this_command_keys, and the submaps and defs arrays are wrong. In
5738 this situation, we set mock_input to t, set t to 0, and jump to
5739 restart_sequence; the loop will read keys from keybuf up until
5740 mock_input, thus rebuilding the state; and then it will resume
5741 reading characters from the keyboard. */
5744 /* If the sequence is unbound in submaps[], then
5745 keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map,
5746 and fkey_map is its binding.
5748 These might be > t, indicating that all function key scanning
5749 should hold off until t reaches them. We do this when we've just
5750 recognized a function key, to avoid searching for the function
5751 key's again in Vfunction_key_map. */
5752 int fkey_start
= 0, fkey_end
= 0;
5753 Lisp_Object fkey_map
;
5755 /* Likewise, for key_translation_map. */
5756 int keytran_start
= 0, keytran_end
= 0;
5757 Lisp_Object keytran_map
;
5759 /* If we receive a ``switch-frame'' event in the middle of a key sequence,
5760 we put it off for later. While we're reading, we keep the event here. */
5761 Lisp_Object delayed_switch_frame
;
5763 /* See the comment below... */
5764 #if defined (GOBBLE_FIRST_EVENT)
5765 Lisp_Object first_event
;
5768 Lisp_Object original_uppercase
;
5769 int original_uppercase_position
= -1;
5771 /* Gets around Microsoft compiler limitations. */
5774 struct buffer
*starting_buffer
;
5776 /* Nonzero if we seem to have got the beginning of a binding
5777 in function_key_map. */
5778 int function_key_possible
= 0;
5779 int key_translation_possible
= 0;
5781 /* Save the status of key translation before each step,
5782 so that we can restore this after downcasing. */
5783 Lisp_Object prev_fkey_map
;
5784 Lisp_Object prev_fkey_start
;
5785 Lisp_Object prev_fkey_end
;
5787 Lisp_Object prev_keytran_map
;
5788 Lisp_Object prev_keytran_start
;
5789 Lisp_Object prev_keytran_end
;
5793 last_nonmenu_event
= Qnil
;
5795 delayed_switch_frame
= Qnil
;
5796 fkey_map
= Vfunction_key_map
;
5797 keytran_map
= Vkey_translation_map
;
5799 /* If there is no function-key-map, turn off function key scanning. */
5800 if (NILP (Fkeymapp (Vfunction_key_map
)))
5801 fkey_start
= fkey_end
= bufsize
+ 1;
5803 /* If there is no key-translation-map, turn off scanning. */
5804 if (NILP (Fkeymapp (Vkey_translation_map
)))
5805 keytran_start
= keytran_end
= bufsize
+ 1;
5810 echo_prompt (XSTRING (prompt
)->data
);
5811 else if (cursor_in_echo_area
&& echo_keystrokes
)
5812 /* This doesn't put in a dash if the echo buffer is empty, so
5813 you don't always see a dash hanging out in the minibuffer. */
5817 /* Record the initial state of the echo area and this_command_keys;
5818 we will need to restore them if we replay a key sequence. */
5820 echo_start
= echo_length ();
5821 keys_start
= this_command_key_count
;
5823 #if defined (GOBBLE_FIRST_EVENT)
5824 /* This doesn't quite work, because some of the things that read_char
5825 does cannot safely be bypassed. It seems too risky to try to make
5828 /* Read the first char of the sequence specially, before setting
5829 up any keymaps, in case a filter runs and switches buffers on us. */
5830 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
5832 #endif /* GOBBLE_FIRST_EVENT */
5834 orig_local_map
= get_local_map (PT
, current_buffer
);
5836 /* We jump here when the key sequence has been thoroughly changed, and
5837 we need to rescan it starting from the beginning. When we jump here,
5838 keybuf[0..mock_input] holds the sequence we should reread. */
5841 starting_buffer
= current_buffer
;
5842 function_key_possible
= 0;
5843 key_translation_possible
= 0;
5845 /* Build our list of keymaps.
5846 If we recognize a function key and replace its escape sequence in
5847 keybuf with its symbol, or if the sequence starts with a mouse
5848 click and we need to switch buffers, we jump back here to rebuild
5849 the initial keymaps from the current buffer. */
5853 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
5854 || !NILP (Voverriding_local_map
))
5856 if (3 > nmaps_allocated
)
5858 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
5859 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
5860 nmaps_allocated
= 3;
5863 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
5864 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
5865 if (!NILP (Voverriding_local_map
))
5866 submaps
[nmaps
++] = Voverriding_local_map
;
5870 nmaps
= current_minor_maps (0, &maps
);
5871 if (nmaps
+ 2 > nmaps_allocated
)
5873 submaps
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (submaps
[0]));
5874 defs
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (defs
[0]));
5875 nmaps_allocated
= nmaps
+ 2;
5877 bcopy (maps
, submaps
, nmaps
* sizeof (submaps
[0]));
5878 #ifdef USE_TEXT_PROPERTIES
5879 submaps
[nmaps
++] = orig_local_map
;
5881 submaps
[nmaps
++] = current_buffer
->keymap
;
5884 submaps
[nmaps
++] = current_global_map
;
5887 /* Find an accurate initial value for first_binding. */
5888 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
5889 if (! NILP (submaps
[first_binding
]))
5892 /* Start from the beginning in keybuf. */
5895 /* These are no-ops the first time through, but if we restart, they
5896 revert the echo area and this_command_keys to their original state. */
5897 this_command_key_count
= keys_start
;
5898 if (INTERACTIVE
&& t
< mock_input
)
5899 echo_truncate (echo_start
);
5901 /* If the best binding for the current key sequence is a keymap, or
5902 we may be looking at a function key's escape sequence, keep on
5904 while ((first_binding
< nmaps
&& ! NILP (submaps
[first_binding
]))
5905 || (first_binding
>= nmaps
5907 /* mock input is never part of a function key's sequence. */
5908 && mock_input
<= fkey_start
)
5909 || (first_binding
>= nmaps
5910 && keytran_start
< t
&& key_translation_possible
)
5911 /* Don't return in the middle of a possible function key sequence,
5912 if the only bindings we found were via case conversion.
5913 Thus, if ESC O a has a function-key-map translation
5914 and ESC o has a binding, don't return after ESC O,
5915 so that we can translate ESC O plus the next character. */
5919 int used_mouse_menu
= 0;
5921 /* Where the last real key started. If we need to throw away a
5922 key that has expanded into more than one element of keybuf
5923 (say, a mouse click on the mode line which is being treated
5924 as [mode-line (mouse-...)], then we backtrack to this point
5926 int last_real_key_start
;
5928 /* These variables are analogous to echo_start and keys_start;
5929 while those allow us to restart the entire key sequence,
5930 echo_local_start and keys_local_start allow us to throw away
5932 int echo_local_start
, keys_local_start
, local_first_binding
;
5935 error ("Key sequence too long");
5938 echo_local_start
= echo_length ();
5939 keys_local_start
= this_command_key_count
;
5940 local_first_binding
= first_binding
;
5943 /* These are no-ops, unless we throw away a keystroke below and
5944 jumped back up to replay_key; in that case, these restore the
5945 variables to their original state, allowing us to replay the
5947 if (INTERACTIVE
&& t
< mock_input
)
5948 echo_truncate (echo_local_start
);
5949 this_command_key_count
= keys_local_start
;
5950 first_binding
= local_first_binding
;
5952 /* By default, assume each event is "real". */
5953 last_real_key_start
= t
;
5955 /* Does mock_input indicate that we are re-reading a key sequence? */
5959 add_command_key (key
);
5960 if (echo_keystrokes
)
5964 /* If not, we should actually read a character. */
5967 struct buffer
*buf
= current_buffer
;
5971 KBOARD
*interrupted_kboard
= current_kboard
;
5972 struct frame
*interrupted_frame
= selected_frame
;
5973 if (setjmp (wrong_kboard_jmpbuf
))
5975 if (!NILP (delayed_switch_frame
))
5977 interrupted_kboard
->kbd_queue
5978 = Fcons (delayed_switch_frame
,
5979 interrupted_kboard
->kbd_queue
);
5980 delayed_switch_frame
= Qnil
;
5983 interrupted_kboard
->kbd_queue
5984 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
5986 /* If the side queue is non-empty, ensure it begins with a
5987 switch-frame, so we'll replay it in the right context. */
5988 if (CONSP (interrupted_kboard
->kbd_queue
)
5989 && (key
= XCONS (interrupted_kboard
->kbd_queue
)->car
,
5990 !(EVENT_HAS_PARAMETERS (key
)
5991 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
5995 XSETFRAME (frame
, interrupted_frame
);
5996 interrupted_kboard
->kbd_queue
5997 = Fcons (make_lispy_switch_frame (frame
),
5998 interrupted_kboard
->kbd_queue
);
6001 orig_local_map
= get_local_map (PT
, current_buffer
);
6002 goto replay_sequence
;
6005 key
= read_char (NILP (prompt
), nmaps
, submaps
, last_nonmenu_event
,
6009 /* read_char returns t when it shows a menu and the user rejects it.
6014 /* read_char returns -1 at the end of a macro.
6015 Emacs 18 handles this by returning immediately with a
6016 zero, so that's what we'll do. */
6017 if (INTEGERP (key
) && XINT (key
) == -1)
6020 /* The Microsoft C compiler can't handle the goto that
6026 /* If the current buffer has been changed from under us, the
6027 keymap may have changed, so replay the sequence. */
6031 orig_local_map
= get_local_map (PT
, current_buffer
);
6032 goto replay_sequence
;
6035 /* If we have a quit that was typed in another frame, and
6036 quit_throw_to_read_char switched buffers,
6037 replay to get the right keymap. */
6038 if (XINT (key
) == quit_char
&& current_buffer
!= starting_buffer
)
6043 orig_local_map
= get_local_map (PT
, current_buffer
);
6044 goto replay_sequence
;
6050 /* Clicks in non-text areas get prefixed by the symbol
6051 in their CHAR-ADDRESS field. For example, a click on
6052 the mode line is prefixed by the symbol `mode-line'.
6054 Furthermore, key sequences beginning with mouse clicks
6055 are read using the keymaps of the buffer clicked on, not
6056 the current buffer. So we may have to switch the buffer
6059 When we turn one event into two events, we must make sure
6060 that neither of the two looks like the original--so that,
6061 if we replay the events, they won't be expanded again.
6062 If not for this, such reexpansion could happen either here
6063 or when user programs play with this-command-keys. */
6064 if (EVENT_HAS_PARAMETERS (key
))
6068 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
6069 if (EQ (kind
, Qmouse_click
))
6071 Lisp_Object window
, posn
;
6073 window
= POSN_WINDOW (EVENT_START (key
));
6074 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6077 /* We're looking at the second event of a
6078 sequence which we expanded before. Set
6079 last_real_key_start appropriately. */
6081 last_real_key_start
= t
- 1;
6084 /* Key sequences beginning with mouse clicks are
6085 read using the keymaps in the buffer clicked on,
6086 not the current buffer. If we're at the
6087 beginning of a key sequence, switch buffers. */
6088 if (last_real_key_start
== 0
6090 && BUFFERP (XWINDOW (window
)->buffer
)
6091 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
6096 /* Arrange to go back to the original buffer once we're
6097 done reading the key sequence. Note that we can't
6098 use save_excursion_{save,restore} here, because they
6099 save point as well as the current buffer; we don't
6100 want to save point, because redisplay may change it,
6101 to accommodate a Fset_window_start or something. We
6102 don't want to do this at the top of the function,
6103 because we may get input from a subprocess which
6104 wants to change the selected window and stuff (say,
6106 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
6108 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
6109 orig_local_map
= get_local_map (PT
, current_buffer
);
6110 goto replay_sequence
;
6112 /* For a mouse click, get the local text-property keymap
6113 of the place clicked on, rather than point. */
6114 if (last_real_key_start
== 0 && CONSP (XCONS (key
)->cdr
)
6115 && ! localized_local_map
)
6117 Lisp_Object map_here
, start
, pos
;
6119 localized_local_map
= 1;
6120 start
= EVENT_START (key
);
6121 if (CONSP (start
) && CONSP (XCONS (start
)->cdr
))
6123 pos
= POSN_BUFFER_POSN (start
);
6125 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
6127 map_here
= get_local_map (XINT (pos
), current_buffer
);
6128 if (!EQ (map_here
, orig_local_map
))
6130 orig_local_map
= map_here
;
6134 goto replay_sequence
;
6140 /* Expand mode-line and scroll-bar events into two events:
6141 use posn as a fake prefix key. */
6144 if (t
+ 1 >= bufsize
)
6145 error ("Key sequence too long");
6150 /* Zap the position in key, so we know that we've
6151 expanded it, and don't try to do so again. */
6152 POSN_BUFFER_POSN (EVENT_START (key
))
6153 = Fcons (posn
, Qnil
);
6157 else if (EQ (kind
, Qswitch_frame
))
6159 /* If we're at the beginning of a key sequence, and the caller
6160 says it's okay, go ahead and return this event. If we're
6161 in the midst of a key sequence, delay it until the end. */
6162 if (t
> 0 || !can_return_switch_frame
)
6164 delayed_switch_frame
= key
;
6168 else if (CONSP (XCONS (key
)->cdr
)
6169 && CONSP (EVENT_START (key
))
6170 && CONSP (XCONS (EVENT_START (key
))->cdr
))
6174 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6175 /* Handle menu-bar events:
6176 insert the dummy prefix event `menu-bar'. */
6177 if (EQ (posn
, Qmenu_bar
))
6179 if (t
+ 1 >= bufsize
)
6180 error ("Key sequence too long");
6184 /* Zap the position in key, so we know that we've
6185 expanded it, and don't try to do so again. */
6186 POSN_BUFFER_POSN (EVENT_START (key
))
6187 = Fcons (posn
, Qnil
);
6190 goto replay_sequence
;
6192 else if (CONSP (posn
))
6194 /* We're looking at the second event of a
6195 sequence which we expanded before. Set
6196 last_real_key_start appropriately. */
6197 if (last_real_key_start
== t
&& t
> 0)
6198 last_real_key_start
= t
- 1;
6203 /* We have finally decided that KEY is something we might want
6205 first_binding
= (follow_key (key
,
6206 nmaps
- first_binding
,
6207 submaps
+ first_binding
,
6208 defs
+ first_binding
,
6209 submaps
+ first_binding
)
6212 /* If KEY wasn't bound, we'll try some fallbacks. */
6213 if (first_binding
>= nmaps
)
6217 head
= EVENT_HEAD (key
);
6218 if (help_char_p (head
) && t
> 0)
6220 read_key_sequence_cmd
= Vprefix_help_command
;
6222 last_nonmenu_event
= key
;
6223 /* The Microsoft C compiler can't handle the goto that
6231 Lisp_Object breakdown
;
6234 breakdown
= parse_modifiers (head
);
6235 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6236 /* Attempt to reduce an unbound mouse event to a simpler
6237 event that is bound:
6238 Drags reduce to clicks.
6239 Double-clicks reduce to clicks.
6240 Triple-clicks reduce to double-clicks, then to clicks.
6241 Down-clicks are eliminated.
6242 Double-downs reduce to downs, then are eliminated.
6243 Triple-downs reduce to double-downs, then to downs,
6244 then are eliminated. */
6245 if (modifiers
& (down_modifier
| drag_modifier
6246 | double_modifier
| triple_modifier
))
6248 while (modifiers
& (down_modifier
| drag_modifier
6249 | double_modifier
| triple_modifier
))
6251 Lisp_Object new_head
, new_click
;
6252 if (modifiers
& triple_modifier
)
6253 modifiers
^= (double_modifier
| triple_modifier
);
6254 else if (modifiers
& double_modifier
)
6255 modifiers
&= ~double_modifier
;
6256 else if (modifiers
& drag_modifier
)
6257 modifiers
&= ~drag_modifier
;
6260 /* Dispose of this `down' event by simply jumping
6261 back to replay_key, to get another event.
6263 Note that if this event came from mock input,
6264 then just jumping back to replay_key will just
6265 hand it to us again. So we have to wipe out any
6268 We could delete keybuf[t] and shift everything
6269 after that to the left by one spot, but we'd also
6270 have to fix up any variable that points into
6271 keybuf, and shifting isn't really necessary
6274 Adding prefixes for non-textual mouse clicks
6275 creates two characters of mock input, and both
6276 must be thrown away. If we're only looking at
6277 the prefix now, we can just jump back to
6278 replay_key. On the other hand, if we've already
6279 processed the prefix, and now the actual click
6280 itself is giving us trouble, then we've lost the
6281 state of the keymaps we want to backtrack to, and
6282 we need to replay the whole sequence to rebuild
6285 Beyond that, only function key expansion could
6286 create more than two keys, but that should never
6287 generate mouse events, so it's okay to zero
6288 mock_input in that case too.
6290 Isn't this just the most wonderful code ever? */
6291 if (t
== last_real_key_start
)
6298 mock_input
= last_real_key_start
;
6299 goto replay_sequence
;
6304 = apply_modifiers (modifiers
, XCONS (breakdown
)->car
);
6306 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
6308 /* Look for a binding for this new key. follow_key
6309 promises that it didn't munge submaps the
6310 last time we called it, since key was unbound. */
6312 = (follow_key (new_click
,
6313 nmaps
- local_first_binding
,
6314 submaps
+ local_first_binding
,
6315 defs
+ local_first_binding
,
6316 submaps
+ local_first_binding
)
6317 + local_first_binding
);
6319 /* If that click is bound, go for it. */
6320 if (first_binding
< nmaps
)
6325 /* Otherwise, we'll leave key set to the drag event. */
6332 /* Normally, last_nonmenu_event gets the previous key we read.
6333 But when a mouse popup menu is being used,
6334 we don't update last_nonmenu_event; it continues to hold the mouse
6335 event that preceded the first level of menu. */
6336 if (!used_mouse_menu
)
6337 last_nonmenu_event
= key
;
6339 prev_fkey_map
= fkey_map
;
6340 prev_fkey_start
= fkey_start
;
6341 prev_fkey_end
= fkey_end
;
6343 prev_keytran_map
= keytran_map
;
6344 prev_keytran_start
= keytran_start
;
6345 prev_keytran_end
= keytran_end
;
6347 /* If the sequence is unbound, see if we can hang a function key
6348 off the end of it. We only want to scan real keyboard input
6349 for function key sequences, so if mock_input says that we're
6350 re-reading old events, don't examine it. */
6351 if (first_binding
>= nmaps
6354 Lisp_Object fkey_next
;
6356 /* Continue scan from fkey_end until we find a bound suffix.
6357 If we fail, increment fkey_start
6358 and start fkey_end from there. */
6359 while (fkey_end
< t
)
6363 key
= keybuf
[fkey_end
++];
6364 /* Look up meta-characters by prefixing them
6365 with meta_prefix_char. I hate this. */
6366 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6371 (access_keymap (fkey_map
, meta_prefix_char
, 1, 0)),
6373 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6376 fkey_next
= fkey_map
;
6379 = get_keyelt (access_keymap (fkey_next
, key
, 1, 0));
6381 #if 0 /* I didn't turn this on, because it might cause trouble
6382 for the mapping of return into C-m and tab into C-i. */
6383 /* Optionally don't map function keys into other things.
6384 This enables the user to redefine kp- keys easily. */
6385 if (SYMBOLP (key
) && !NILP (Vinhibit_function_key_mapping
))
6389 /* If the function key map gives a function, not an
6390 array, then call the function with no args and use
6391 its value instead. */
6392 if (SYMBOLP (fkey_next
) && ! NILP (Ffboundp (fkey_next
))
6395 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6399 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6400 fkey_next
= call1 (fkey_next
, prompt
);
6402 /* If the function returned something invalid,
6403 barf--don't ignore it.
6404 (To ignore it safely, we would need to gcpro a bunch of
6405 other variables.) */
6406 if (! (VECTORP (fkey_next
) || STRINGP (fkey_next
)))
6407 error ("Function in function-key-map returns invalid key sequence");
6410 function_key_possible
= ! NILP (fkey_next
);
6412 /* If keybuf[fkey_start..fkey_end] is bound in the
6413 function key map and it's a suffix of the current
6414 sequence (i.e. fkey_end == t), replace it with
6415 the binding and restart with fkey_start at the end. */
6416 if ((VECTORP (fkey_next
) || STRINGP (fkey_next
))
6419 int len
= XFASTINT (Flength (fkey_next
));
6421 t
= fkey_start
+ len
;
6423 error ("Key sequence too long");
6425 if (VECTORP (fkey_next
))
6426 bcopy (XVECTOR (fkey_next
)->contents
,
6427 keybuf
+ fkey_start
,
6428 (t
- fkey_start
) * sizeof (keybuf
[0]));
6429 else if (STRINGP (fkey_next
))
6433 for (i
= 0; i
< len
; i
++)
6434 XSETFASTINT (keybuf
[fkey_start
+ i
],
6435 XSTRING (fkey_next
)->data
[i
]);
6439 fkey_start
= fkey_end
= t
;
6440 fkey_map
= Vfunction_key_map
;
6442 /* Do pass the results through key-translation-map. */
6443 keytran_start
= keytran_end
= 0;
6444 keytran_map
= Vkey_translation_map
;
6446 goto replay_sequence
;
6449 fkey_map
= get_keymap_1 (fkey_next
, 0, 1);
6451 /* If we no longer have a bound suffix, try a new positions for
6453 if (NILP (fkey_map
))
6455 fkey_end
= ++fkey_start
;
6456 fkey_map
= Vfunction_key_map
;
6457 function_key_possible
= 0;
6462 /* Look for this sequence in key-translation-map. */
6464 Lisp_Object keytran_next
;
6466 /* Scan from keytran_end until we find a bound suffix. */
6467 while (keytran_end
< t
)
6471 key
= keybuf
[keytran_end
++];
6472 /* Look up meta-characters by prefixing them
6473 with meta_prefix_char. I hate this. */
6474 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6479 (access_keymap (keytran_map
, meta_prefix_char
, 1, 0)),
6481 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6484 keytran_next
= keytran_map
;
6487 = get_keyelt (access_keymap (keytran_next
, key
, 1, 0));
6489 /* If the key translation map gives a function, not an
6490 array, then call the function with no args and use
6491 its value instead. */
6492 if (SYMBOLP (keytran_next
) && ! NILP (Ffboundp (keytran_next
))
6493 && keytran_end
== t
)
6495 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6499 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6500 keytran_next
= call1 (keytran_next
, prompt
);
6502 /* If the function returned something invalid,
6503 barf--don't ignore it.
6504 (To ignore it safely, we would need to gcpro a bunch of
6505 other variables.) */
6506 if (! (VECTORP (keytran_next
) || STRINGP (keytran_next
)))
6507 error ("Function in key-translation-map returns invalid key sequence");
6510 key_translation_possible
= ! NILP (keytran_next
);
6512 /* If keybuf[keytran_start..keytran_end] is bound in the
6513 key translation map and it's a suffix of the current
6514 sequence (i.e. keytran_end == t), replace it with
6515 the binding and restart with keytran_start at the end. */
6516 if ((VECTORP (keytran_next
) || STRINGP (keytran_next
))
6517 && keytran_end
== t
)
6519 int len
= XFASTINT (Flength (keytran_next
));
6521 t
= keytran_start
+ len
;
6523 error ("Key sequence too long");
6525 if (VECTORP (keytran_next
))
6526 bcopy (XVECTOR (keytran_next
)->contents
,
6527 keybuf
+ keytran_start
,
6528 (t
- keytran_start
) * sizeof (keybuf
[0]));
6529 else if (STRINGP (keytran_next
))
6533 for (i
= 0; i
< len
; i
++)
6534 XSETFASTINT (keybuf
[keytran_start
+ i
],
6535 XSTRING (keytran_next
)->data
[i
]);
6539 keytran_start
= keytran_end
= t
;
6540 keytran_map
= Vkey_translation_map
;
6542 /* Don't pass the results of key-translation-map
6543 through function-key-map. */
6544 fkey_start
= fkey_end
= t
;
6545 fkey_map
= Vkey_translation_map
;
6547 goto replay_sequence
;
6550 keytran_map
= get_keymap_1 (keytran_next
, 0, 1);
6552 /* If we no longer have a bound suffix, try a new positions for
6554 if (NILP (keytran_map
))
6556 keytran_end
= ++keytran_start
;
6557 keytran_map
= Vkey_translation_map
;
6558 key_translation_possible
= 0;
6563 /* If KEY is not defined in any of the keymaps,
6564 and cannot be part of a function key or translation,
6565 and is an upper case letter
6566 use the corresponding lower-case letter instead. */
6567 if (first_binding
== nmaps
&& ! function_key_possible
6568 && ! key_translation_possible
6570 && ((((XINT (key
) & 0x3ffff)
6571 < XSTRING (current_buffer
->downcase_table
)->size
)
6572 && UPPERCASEP (XINT (key
) & 0x3ffff))
6573 || (XINT (key
) & shift_modifier
)))
6575 Lisp_Object new_key
;
6577 original_uppercase
= key
;
6578 original_uppercase_position
= t
- 1;
6580 if (XINT (key
) & shift_modifier
)
6581 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
6583 XSETINT (new_key
, (DOWNCASE (XINT (key
) & 0x3ffff)
6584 | (XINT (key
) & ~0x3ffff)));
6586 /* We have to do this unconditionally, regardless of whether
6587 the lower-case char is defined in the keymaps, because they
6588 might get translated through function-key-map. */
6589 keybuf
[t
- 1] = new_key
;
6592 fkey_map
= prev_fkey_map
;
6593 fkey_start
= prev_fkey_start
;
6594 fkey_end
= prev_fkey_end
;
6596 keytran_map
= prev_keytran_map
;
6597 keytran_start
= prev_keytran_start
;
6598 keytran_end
= prev_keytran_end
;
6600 goto replay_sequence
;
6602 /* If KEY is not defined in any of the keymaps,
6603 and cannot be part of a function key or translation,
6604 and is a shifted function key,
6605 use the corresponding unshifted function key instead. */
6606 if (first_binding
== nmaps
&& ! function_key_possible
6607 && ! key_translation_possible
6610 Lisp_Object breakdown
;
6613 breakdown
= parse_modifiers (key
);
6614 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6615 if (modifiers
& shift_modifier
)
6617 Lisp_Object new_key
;
6619 original_uppercase
= key
;
6620 original_uppercase_position
= t
- 1;
6622 modifiers
&= ~shift_modifier
;
6623 new_key
= apply_modifiers (modifiers
,
6624 XCONS (breakdown
)->car
);
6626 keybuf
[t
- 1] = new_key
;
6629 fkey_map
= prev_fkey_map
;
6630 fkey_start
= prev_fkey_start
;
6631 fkey_end
= prev_fkey_end
;
6633 keytran_map
= prev_keytran_map
;
6634 keytran_start
= prev_keytran_start
;
6635 keytran_end
= prev_keytran_end
;
6637 goto replay_sequence
;
6643 read_key_sequence_cmd
= (first_binding
< nmaps
6644 ? defs
[first_binding
]
6647 unread_switch_frame
= delayed_switch_frame
;
6648 unbind_to (count
, Qnil
);
6650 /* Don't downcase the last character if the caller says don't.
6651 Don't downcase it if the result is undefined, either. */
6652 if ((dont_downcase_last
|| first_binding
>= nmaps
)
6653 && t
- 1 == original_uppercase_position
)
6654 keybuf
[t
- 1] = original_uppercase
;
6656 /* Occasionally we fabricate events, perhaps by expanding something
6657 according to function-key-map, or by adding a prefix symbol to a
6658 mouse click in the scroll bar or modeline. In this cases, return
6659 the entire generated key sequence, even if we hit an unbound
6660 prefix or a definition before the end. This means that you will
6661 be able to push back the event properly, and also means that
6662 read-key-sequence will always return a logical unit.
6665 for (; t
< mock_input
; t
++)
6667 if (echo_keystrokes
)
6668 echo_char (keybuf
[t
]);
6669 add_command_key (keybuf
[t
]);
6675 #if 0 /* This doc string is too long for some compilers.
6676 This commented-out definition serves for DOC. */
6677 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6678 "Read a sequence of keystrokes and return as a string or vector.\n\
6679 The sequence is sufficient to specify a non-prefix command in the\n\
6680 current local and global maps.\n\
6682 First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\
6683 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\
6684 as a continuation of the previous key.\n\
6686 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\
6687 convert the last event to lower case. (Normally any upper case event\n\
6688 is converted to lower case if the original event is undefined and the lower\n\
6689 case equivalent is defined.) A non-nil value is appropriate for reading\n\
6690 a key sequence to be defined.\n\
6692 A C-g typed while in this function is treated like any other character,\n\
6693 and `quit-flag' is not set.\n\
6695 If the key sequence starts with a mouse click, then the sequence is read\n\
6696 using the keymaps of the buffer of the window clicked in, not the buffer\n\
6697 of the selected window as normal.\n\
6699 `read-key-sequence' drops unbound button-down events, since you normally\n\
6700 only care about the click or drag events which follow them. If a drag\n\
6701 or multi-click event is unbound, but the corresponding click event would\n\
6702 be bound, `read-key-sequence' turns the event into a click event at the\n\
6703 drag's starting position. This means that you don't have to distinguish\n\
6704 between click and drag, double, or triple events unless you want to.\n\
6706 `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\
6707 lines separating windows, and scroll bars with imaginary keys\n\
6708 `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\
6710 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\
6711 function will process a switch-frame event if the user switches frames\n\
6712 before typing anything. If the user switches frames in the middle of a\n\
6713 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\
6714 is nil, then the event will be put off until after the current key sequence.\n\
6716 `read-key-sequence' checks `function-key-map' for function key\n\
6717 sequences, where they wouldn't conflict with ordinary bindings. See\n\
6718 `function-key-map' for more details.")
6719 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6722 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6724 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6725 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
6726 Lisp_Object can_return_switch_frame
;
6728 Lisp_Object keybuf
[30];
6730 struct gcpro gcpro1
, gcpro2
;
6733 CHECK_STRING (prompt
, 0);
6736 bzero (keybuf
, sizeof keybuf
);
6738 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
6740 if (NILP (continue_echo
))
6741 this_command_key_count
= 0;
6743 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
6744 prompt
, ! NILP (dont_downcase_last
),
6745 ! NILP (can_return_switch_frame
));
6753 return make_event_array (i
, keybuf
);
6756 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
6757 "Execute CMD as an editor command.\n\
6758 CMD must be a symbol that satisfies the `commandp' predicate.\n\
6759 Optional second arg RECORD-FLAG non-nil\n\
6760 means unconditionally put this command in `command-history'.\n\
6761 Otherwise, that is done only if an arg is read using the minibuffer.\n\
6762 The argument KEYS specifies the value to use instead of (this-command-keys)\n\
6763 when reading the arguments; if it is nil, (this_command_key_count) is used.\n\
6764 The argument SPECIAL, if non-nil, means that this command is executing\n\
6765 a special event, so ignore the prefix argument and don't clear it.")
6766 (cmd
, record_flag
, keys
, special
)
6767 Lisp_Object cmd
, record_flag
, keys
, special
;
6769 register Lisp_Object final
;
6770 register Lisp_Object tem
;
6771 Lisp_Object prefixarg
;
6772 struct backtrace backtrace
;
6773 extern int debug_on_next_call
;
6775 debug_on_next_call
= 0;
6779 prefixarg
= current_kboard
->Vprefix_arg
;
6780 Vcurrent_prefix_arg
= prefixarg
;
6781 current_kboard
->Vprefix_arg
= Qnil
;
6788 tem
= Fget (cmd
, Qdisabled
);
6789 if (!NILP (tem
) && !NILP (Vrun_hooks
))
6791 tem
= Fsymbol_value (Qdisabled_command_hook
);
6793 return call1 (Vrun_hooks
, Qdisabled_command_hook
);
6799 final
= Findirect_function (cmd
);
6801 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
6802 do_autoload (final
, cmd
);
6807 if (STRINGP (final
) || VECTORP (final
))
6809 /* If requested, place the macro in the command history. For
6810 other sorts of commands, call-interactively takes care of
6812 if (!NILP (record_flag
))
6814 = Fcons (Fcons (Qexecute_kbd_macro
,
6815 Fcons (final
, Fcons (prefixarg
, Qnil
))),
6818 return Fexecute_kbd_macro (final
, prefixarg
);
6820 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
6822 backtrace
.next
= backtrace_list
;
6823 backtrace_list
= &backtrace
;
6824 backtrace
.function
= &Qcall_interactively
;
6825 backtrace
.args
= &cmd
;
6826 backtrace
.nargs
= 1;
6827 backtrace
.evalargs
= 0;
6829 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
6831 backtrace_list
= backtrace
.next
;
6837 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
6839 "Read function name, then read its arguments and call it.")
6841 Lisp_Object prefixarg
;
6843 Lisp_Object function
;
6845 Lisp_Object saved_keys
;
6846 struct gcpro gcpro1
;
6848 saved_keys
= Fvector (this_command_key_count
,
6849 XVECTOR (this_command_keys
)->contents
);
6851 GCPRO1 (saved_keys
);
6853 if (EQ (prefixarg
, Qminus
))
6855 else if (CONSP (prefixarg
) && XINT (XCONS (prefixarg
)->car
) == 4)
6856 strcpy (buf
, "C-u ");
6857 else if (CONSP (prefixarg
) && INTEGERP (XCONS (prefixarg
)->car
))
6859 if (sizeof (int) == sizeof (EMACS_INT
))
6860 sprintf (buf
, "%d ", XINT (XCONS (prefixarg
)->car
));
6861 else if (sizeof (long) == sizeof (EMACS_INT
))
6862 sprintf (buf
, "%ld ", XINT (XCONS (prefixarg
)->car
));
6866 else if (INTEGERP (prefixarg
))
6868 if (sizeof (int) == sizeof (EMACS_INT
))
6869 sprintf (buf
, "%d ", XINT (prefixarg
));
6870 else if (sizeof (long) == sizeof (EMACS_INT
))
6871 sprintf (buf
, "%ld ", XINT (prefixarg
));
6876 /* This isn't strictly correct if execute-extended-command
6877 is bound to anything else. Perhaps it should use
6878 this_command_keys? */
6879 strcat (buf
, "M-x ");
6881 /* Prompt with buf, and then read a string, completing from and
6882 restricting to the set of all defined commands. Don't provide
6883 any initial input. Save the command read on the extended-command
6885 function
= Fcompleting_read (build_string (buf
),
6886 Vobarray
, Qcommandp
,
6887 Qt
, Qnil
, Qextended_command_history
);
6889 if (STRINGP (function
) && XSTRING (function
)->size
== 0)
6890 error ("No command name given");
6892 /* Set this_command_keys to the concatenation of saved_keys and
6893 function, followed by a RET. */
6895 struct Lisp_String
*str
;
6900 this_command_key_count
= 0;
6902 keys
= XVECTOR (saved_keys
)->contents
;
6903 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
6904 add_command_key (keys
[i
]);
6906 str
= XSTRING (function
);
6907 for (i
= 0; i
< str
->size
; i
++)
6909 XSETFASTINT (tem
, str
->data
[i
]);
6910 add_command_key (tem
);
6913 XSETFASTINT (tem
, '\015');
6914 add_command_key (tem
);
6919 function
= Fintern (function
, Qnil
);
6920 current_kboard
->Vprefix_arg
= prefixarg
;
6921 this_command
= function
;
6923 /* If enabled, show which key runs this command. */
6924 if (!NILP (Vsuggest_key_bindings
)
6925 && SYMBOLP (function
))
6927 Lisp_Object bindings
;
6929 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
6932 if (!NILP (bindings
))
6934 message ("You can run the command `%s' by typing %s",
6935 XSYMBOL (function
)->name
->data
,
6936 XSTRING (Fkey_description (bindings
))->data
);
6937 Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
6938 ? Vsuggest_key_bindings
: make_number (2)),
6943 return Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
6946 /* Find the set of keymaps now active.
6947 Store into *MAPS_P a vector holding the various maps
6948 and return the number of them. The vector was malloc'd
6949 and the caller should free it. */
6952 current_active_maps (maps_p
)
6953 Lisp_Object
**maps_p
;
6955 Lisp_Object
*tmaps
, *maps
;
6958 /* Should overriding-terminal-local-map and overriding-local-map apply? */
6959 if (!NILP (Voverriding_local_map_menu_flag
))
6961 /* Yes, use them (if non-nil) as well as the global map. */
6962 maps
= (Lisp_Object
*) xmalloc (3 * sizeof (maps
[0]));
6964 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
6965 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
6966 if (!NILP (Voverriding_local_map
))
6967 maps
[nmaps
++] = Voverriding_local_map
;
6971 /* No, so use major and minor mode keymaps. */
6972 nmaps
= current_minor_maps (NULL
, &tmaps
);
6973 maps
= (Lisp_Object
*) xmalloc ((nmaps
+ 2) * sizeof (maps
[0]));
6974 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
6975 #ifdef USE_TEXT_PROPERTIES
6976 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
6978 maps
[nmaps
++] = current_buffer
->keymap
;
6981 maps
[nmaps
++] = current_global_map
;
6987 /* Return nonzero if input events are pending. */
6989 detect_input_pending ()
6992 get_input_pending (&input_pending
, 0);
6994 return input_pending
;
6997 /* Return nonzero if input events are pending.
6998 Execute timers immediately; don't make events for them. */
7000 detect_input_pending_run_timers (do_display
)
7003 int old_timers_run
= timers_run
;
7006 get_input_pending (&input_pending
, 1);
7008 if (old_timers_run
!= timers_run
&& do_display
)
7009 redisplay_preserve_echo_area ();
7011 return input_pending
;
7014 /* This is called in some cases before a possible quit.
7015 It cases the next call to detect_input_pending to recompute input_pending.
7016 So calling this function unnecessarily can't do any harm. */
7017 clear_input_pending ()
7022 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
7023 "T if command input is currently available with no waiting.\n\
7024 Actually, the value is nil only if we can be sure that no input is available.")
7027 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
7030 get_input_pending (&input_pending
, 1);
7031 return input_pending
> 0 ? Qt
: Qnil
;
7034 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
7035 "Return vector of last 100 events, not counting those from keyboard macros.")
7038 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
7041 if (total_keys
< NUM_RECENT_KEYS
)
7042 return Fvector (total_keys
, keys
);
7045 val
= Fvector (NUM_RECENT_KEYS
, keys
);
7046 bcopy (keys
+ recent_keys_index
,
7047 XVECTOR (val
)->contents
,
7048 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
7050 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
7051 recent_keys_index
* sizeof (Lisp_Object
));
7056 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
7057 "Return the key sequence that invoked this command.\n\
7058 The value is a string or a vector.")
7061 return make_event_array (this_command_key_count
,
7062 XVECTOR (this_command_keys
)->contents
);
7065 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
7066 Sreset_this_command_lengths
, 0, 0, 0,
7067 "Used for complicated reasons in `universal-argument-other-key'.\n\
7069 `universal-argument-other-key' rereads the event just typed.\n\
7070 It then gets translated through `function-key-map'.\n\
7071 The translated event gets included in the echo area and in\n\
7072 the value of `this-command-keys' in addition to the raw original event.\n\
7073 That is not right.\n\
7075 Calling this function directs the translated event to replace\n\
7076 the original event, so that only one version of the event actually\n\
7077 appears in the echo area and in the value of `this-command-keys.'.")
7080 before_command_restore_flag
= 1;
7081 before_command_key_count_1
= before_command_key_count
;
7082 before_command_echo_length_1
= before_command_echo_length
;
7085 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
7086 "Return the current depth in recursive edits.")
7090 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
7094 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
7095 "FOpen dribble file: ",
7096 "Start writing all keyboard characters to a dribble file called FILE.\n\
7097 If FILE is nil, close any open dribble file.")
7108 file
= Fexpand_file_name (file
, Qnil
);
7109 dribble
= fopen (XSTRING (file
)->data
, "w");
7111 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
7116 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
7117 "Discard the contents of the terminal input buffer.\n\
7118 Also cancel any kbd macro being defined.")
7121 current_kboard
->defining_kbd_macro
= Qnil
;
7122 update_mode_lines
++;
7124 Vunread_command_events
= Qnil
;
7125 unread_command_char
= -1;
7127 discard_tty_input ();
7129 /* Without the cast, GCC complains that this assignment loses the
7130 volatile qualifier of kbd_store_ptr. Is there anything wrong
7132 kbd_fetch_ptr
= (struct input_event
*) kbd_store_ptr
;
7133 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7139 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
7140 "Stop Emacs and return to superior process. You can resume later.\n\
7141 If `cannot-suspend' is non-nil, or if the system doesn't support job\n\
7142 control, run a subshell instead.\n\n\
7143 If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\
7144 to be read as terminal input by Emacs's parent, after suspension.\n\
7146 Before suspending, run the normal hook `suspend-hook'.\n\
7147 After resumption run the normal hook `suspend-resume-hook'.\n\
7149 Some operating systems cannot stop the Emacs process and resume it later.\n\
7150 On such systems, Emacs starts a subshell instead of suspending.")
7152 Lisp_Object stuffstring
;
7155 int count
= specpdl_ptr
- specpdl
;
7156 int old_height
, old_width
;
7158 struct gcpro gcpro1
, gcpro2
;
7159 extern init_sys_modes ();
7161 if (!NILP (stuffstring
))
7162 CHECK_STRING (stuffstring
, 0);
7164 /* Run the functions in suspend-hook. */
7165 if (!NILP (Vrun_hooks
))
7166 call1 (Vrun_hooks
, intern ("suspend-hook"));
7168 GCPRO1 (stuffstring
);
7169 get_frame_size (&old_width
, &old_height
);
7171 /* sys_suspend can get an error if it tries to fork a subshell
7172 and the system resources aren't available for that. */
7173 record_unwind_protect (init_sys_modes
, 0);
7174 stuff_buffered_input (stuffstring
);
7179 unbind_to (count
, Qnil
);
7181 /* Check if terminal/window size has changed.
7182 Note that this is not useful when we are running directly
7183 with a window system; but suspend should be disabled in that case. */
7184 get_frame_size (&width
, &height
);
7185 if (width
!= old_width
|| height
!= old_height
)
7186 change_frame_size (selected_frame
, height
, width
, 0, 0);
7188 /* Run suspend-resume-hook. */
7189 if (!NILP (Vrun_hooks
))
7190 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
7196 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
7197 Then in any case stuff anything Emacs has read ahead and not used. */
7199 stuff_buffered_input (stuffstring
)
7200 Lisp_Object stuffstring
;
7202 /* stuff_char works only in BSD, versions 4.2 and up. */
7205 register unsigned char *p
;
7207 if (STRINGP (stuffstring
))
7211 p
= XSTRING (stuffstring
)->data
;
7212 count
= XSTRING (stuffstring
)->size
;
7217 /* Anything we have read ahead, put back for the shell to read. */
7218 /* ?? What should this do when we have multiple keyboards??
7219 Should we ignore anything that was typed in at the "wrong" kboard? */
7220 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
7222 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
7223 kbd_fetch_ptr
= kbd_buffer
;
7224 if (kbd_fetch_ptr
->kind
== ascii_keystroke
)
7225 stuff_char (kbd_fetch_ptr
->code
);
7226 kbd_fetch_ptr
->kind
= no_event
;
7227 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_fetch_ptr
7233 #endif /* BSD and not BSD4_1 */
7236 set_waiting_for_input (time_to_clear
)
7237 EMACS_TIME
*time_to_clear
;
7239 input_available_clear_time
= time_to_clear
;
7241 /* Tell interrupt_signal to throw back to read_char, */
7242 waiting_for_input
= 1;
7244 /* If interrupt_signal was called before and buffered a C-g,
7245 make it run again now, to avoid timing error. */
7246 if (!NILP (Vquit_flag
))
7247 quit_throw_to_read_char ();
7250 clear_waiting_for_input ()
7252 /* Tell interrupt_signal not to throw back to read_char, */
7253 waiting_for_input
= 0;
7254 input_available_clear_time
= 0;
7257 /* This routine is called at interrupt level in response to C-G.
7258 If interrupt_input, this is the handler for SIGINT.
7259 Otherwise, it is called from kbd_buffer_store_event,
7260 in handling SIGIO or SIGTINT.
7262 If `waiting_for_input' is non zero, then unless `echoing' is nonzero,
7263 immediately throw back to read_char.
7265 Otherwise it sets the Lisp variable quit-flag not-nil.
7266 This causes eval to throw, when it gets a chance.
7267 If quit-flag is already non-nil, it stops the job right away. */
7270 interrupt_signal (signalnum
) /* If we don't have an argument, */
7271 int signalnum
; /* some compilers complain in signal calls. */
7274 /* Must preserve main program's value of errno. */
7275 int old_errno
= errno
;
7278 if (!read_socket_hook
&& NILP (Vwindow_system
))
7280 /* USG systems forget handlers when they are used;
7281 must reestablish each time */
7282 signal (SIGINT
, interrupt_signal
);
7283 signal (SIGQUIT
, interrupt_signal
);
7289 if (!NILP (Vquit_flag
) && FRAME_TERMCAP_P (selected_frame
))
7294 #ifdef SIGTSTP /* Support possible in later USG versions */
7296 * On systems which can suspend the current process and return to the original
7297 * shell, this command causes the user to end up back at the shell.
7298 * The "Auto-save" and "Abort" questions are not asked until
7299 * the user elects to return to emacs, at which point he can save the current
7300 * job and either dump core or continue.
7305 if (sys_suspend () == -1)
7307 printf ("Not running as a subprocess;\n");
7308 printf ("you can continue or abort.\n");
7311 /* Perhaps should really fork an inferior shell?
7312 But that would not provide any way to get back
7313 to the original shell, ever. */
7314 printf ("No support for stopping a process on this operating system;\n");
7315 printf ("you can continue or abort.\n");
7316 #endif /* not VMS */
7317 #endif /* not SIGTSTP */
7319 /* We must remain inside the screen area when the internal terminal
7320 is used. Note that [Enter] is not echoed by dos. */
7323 /* It doesn't work to autosave while GC is in progress;
7324 the code used for auto-saving doesn't cope with the mark bit. */
7325 if (!gc_in_progress
)
7327 printf ("Auto-save? (y or n) ");
7329 if (((c
= getchar ()) & ~040) == 'Y')
7331 Fdo_auto_save (Qt
, Qnil
);
7333 printf ("\r\nAuto-save done");
7334 #else /* not MSDOS */
7335 printf ("Auto-save done\n");
7336 #endif /* not MSDOS */
7338 while (c
!= '\n') c
= getchar ();
7342 /* During GC, it must be safe to reenable quitting again. */
7343 Vinhibit_quit
= Qnil
;
7346 #endif /* not MSDOS */
7347 printf ("Garbage collection in progress; cannot auto-save now\r\n");
7348 printf ("but will instead do a real quit after garbage collection ends\r\n");
7353 printf ("\r\nAbort? (y or n) ");
7354 #else /* not MSDOS */
7356 printf ("Abort (and enter debugger)? (y or n) ");
7358 printf ("Abort (and dump core)? (y or n) ");
7359 #endif /* not VMS */
7360 #endif /* not MSDOS */
7362 if (((c
= getchar ()) & ~040) == 'Y')
7364 while (c
!= '\n') c
= getchar ();
7366 printf ("\r\nContinuing...\r\n");
7367 #else /* not MSDOS */
7368 printf ("Continuing...\n");
7369 #endif /* not MSDOS */
7375 /* If executing a function that wants to be interrupted out of
7376 and the user has not deferred quitting by binding `inhibit-quit'
7377 then quit right away. */
7378 if (immediate_quit
&& NILP (Vinhibit_quit
))
7382 Fsignal (Qquit
, Qnil
);
7385 /* Else request quit when it's safe */
7389 if (waiting_for_input
&& !echoing
)
7390 quit_throw_to_read_char ();
7395 /* Handle a C-g by making read_char return C-g. */
7397 quit_throw_to_read_char ()
7399 quit_error_check ();
7401 /* Prevent another signal from doing this before we finish. */
7402 clear_waiting_for_input ();
7405 Vunread_command_events
= Qnil
;
7406 unread_command_char
= -1;
7408 #if 0 /* Currently, sit_for is called from read_char without turning
7409 off polling. And that can call set_waiting_for_input.
7410 It seems to be harmless. */
7411 #ifdef POLL_FOR_INPUT
7412 /* May be > 1 if in recursive minibuffer. */
7413 if (poll_suppress_count
== 0)
7418 if (FRAMEP (internal_last_event_frame
)
7419 && XFRAME (internal_last_event_frame
) != selected_frame
)
7420 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
7424 _longjmp (getcjmp
, 1);
7427 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
7428 "Set mode of reading keyboard input.\n\
7429 First arg INTERRUPT non-nil means use input interrupts;\n\
7430 nil means use CBREAK mode.\n\
7431 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\
7432 (no effect except in CBREAK mode).\n\
7433 Third arg META t means accept 8-bit input (for a Meta key).\n\
7434 META nil means ignore the top bit, on the assumption it is parity.\n\
7435 Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\
7436 Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\
7437 See also `current-input-mode'.")
7438 (interrupt
, flow
, meta
, quit
)
7439 Lisp_Object interrupt
, flow
, meta
, quit
;
7442 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
7443 error ("set-input-mode: QUIT must be an ASCII character");
7445 #ifdef POLL_FOR_INPUT
7450 /* this causes startup screen to be restored and messes with the mouse */
7455 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7456 if (read_socket_hook
)
7458 /* When using X, don't give the user a real choice,
7459 because we haven't implemented the mechanisms to support it. */
7460 #ifdef NO_SOCK_SIGIO
7461 interrupt_input
= 0;
7462 #else /* not NO_SOCK_SIGIO */
7463 interrupt_input
= 1;
7464 #endif /* NO_SOCK_SIGIO */
7467 interrupt_input
= !NILP (interrupt
);
7468 #else /* not SIGIO */
7469 interrupt_input
= 0;
7470 #endif /* not SIGIO */
7472 /* Our VMS input only works by interrupts, as of now. */
7474 interrupt_input
= 1;
7477 flow_control
= !NILP (flow
);
7480 else if (EQ (meta
, Qt
))
7485 /* Don't let this value be out of range. */
7486 quit_char
= XINT (quit
) & (meta_key
? 0377 : 0177);
7492 #ifdef POLL_FOR_INPUT
7493 poll_suppress_count
= 1;
7499 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
7500 "Return information about the way Emacs currently reads keyboard input.\n\
7501 The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\
7502 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\
7503 nil, Emacs is using CBREAK mode.\n\
7504 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\
7505 terminal; this does not apply if Emacs uses interrupt-driven input.\n\
7506 META is t if accepting 8-bit input with 8th bit as Meta flag.\n\
7507 META nil means ignoring the top bit, on the assumption it is parity.\n\
7508 META is neither t nor nil if accepting 8-bit input and using\n\
7509 all 8 bits as the character code.\n\
7510 QUIT is the character Emacs currently uses to quit.\n\
7511 The elements of this list correspond to the arguments of\n\
7517 val
[0] = interrupt_input
? Qt
: Qnil
;
7518 val
[1] = flow_control
? Qt
: Qnil
;
7519 val
[2] = meta_key
== 2 ? make_number (0) : meta_key
== 1 ? Qt
: Qnil
;
7520 XSETFASTINT (val
[3], quit_char
);
7522 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
7527 * Set up a new kboard object with reasonable initial values.
7533 kb
->Voverriding_terminal_local_map
= Qnil
;
7534 kb
->Vlast_command
= Qnil
;
7535 kb
->Vprefix_arg
= Qnil
;
7536 kb
->kbd_queue
= Qnil
;
7537 kb
->kbd_queue_has_data
= 0;
7538 kb
->immediate_echo
= 0;
7539 kb
->echoptr
= kb
->echobuf
;
7540 kb
->echo_after_prompt
= -1;
7541 kb
->kbd_macro_buffer
= 0;
7542 kb
->kbd_macro_bufsize
= 0;
7543 kb
->defining_kbd_macro
= Qnil
;
7544 kb
->Vlast_kbd_macro
= Qnil
;
7545 kb
->reference_count
= 0;
7546 kb
->Vsystem_key_alist
= Qnil
;
7547 kb
->system_key_syms
= Qnil
;
7548 kb
->Vdefault_minibuffer_frame
= Qnil
;
7552 * Destroy the contents of a kboard object, but not the object itself.
7553 * We use this just before deleting it, or if we're going to initialize
7560 if (kb
->kbd_macro_buffer
)
7561 xfree (kb
->kbd_macro_buffer
);
7570 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
7573 *kbp
= kb
->next_kboard
;
7581 /* This is correct before outermost invocation of the editor loop */
7582 command_loop_level
= -1;
7584 quit_char
= Ctl ('g');
7585 Vunread_command_events
= Qnil
;
7586 unread_command_char
= -1;
7587 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
7589 recent_keys_index
= 0;
7590 kbd_fetch_ptr
= kbd_buffer
;
7591 kbd_store_ptr
= kbd_buffer
;
7592 kbd_buffer_frame_or_window
7593 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7595 do_mouse_tracking
= Qnil
;
7600 /* This means that command_loop_1 won't try to select anything the first
7602 internal_last_event_frame
= Qnil
;
7603 Vlast_event_frame
= internal_last_event_frame
;
7607 current_kboard
= initial_kboard
;
7609 wipe_kboard (current_kboard
);
7610 init_kboard (current_kboard
);
7613 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7615 kbd_buffer_frame_or_window
7616 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7617 if (!noninteractive
&& !read_socket_hook
&& NILP (Vwindow_system
))
7619 signal (SIGINT
, interrupt_signal
);
7620 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
7621 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
7622 SIGQUIT and we can't tell which one it will give us. */
7623 signal (SIGQUIT
, interrupt_signal
);
7624 #endif /* HAVE_TERMIO */
7626 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7628 if (!noninteractive
)
7629 signal (SIGIO
, input_available_signal
);
7632 /* Use interrupt input by default, if it works and noninterrupt input
7633 has deficiencies. */
7635 #ifdef INTERRUPT_INPUT
7636 interrupt_input
= 1;
7638 interrupt_input
= 0;
7641 /* Our VMS input only works by interrupts, as of now. */
7643 interrupt_input
= 1;
7649 if (keyboard_init_hook
)
7650 (*keyboard_init_hook
) ();
7652 #ifdef POLL_FOR_INPUT
7653 poll_suppress_count
= 1;
7658 /* This type's only use is in syms_of_keyboard, to initialize the
7659 event header symbols and put properties on them. */
7666 struct event_head head_table
[] = {
7667 &Qmouse_movement
, "mouse-movement", &Qmouse_movement
,
7668 &Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
,
7669 &Qswitch_frame
, "switch-frame", &Qswitch_frame
,
7670 &Qdelete_frame
, "delete-frame", &Qdelete_frame
,
7671 &Qiconify_frame
, "iconify-frame", &Qiconify_frame
,
7672 &Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
,
7677 Qdisabled_command_hook
= intern ("disabled-command-hook");
7678 staticpro (&Qdisabled_command_hook
);
7680 Qself_insert_command
= intern ("self-insert-command");
7681 staticpro (&Qself_insert_command
);
7683 Qforward_char
= intern ("forward-char");
7684 staticpro (&Qforward_char
);
7686 Qbackward_char
= intern ("backward-char");
7687 staticpro (&Qbackward_char
);
7689 Qdisabled
= intern ("disabled");
7690 staticpro (&Qdisabled
);
7692 Qundefined
= intern ("undefined");
7693 staticpro (&Qundefined
);
7695 Qpre_command_hook
= intern ("pre-command-hook");
7696 staticpro (&Qpre_command_hook
);
7698 Qpost_command_hook
= intern ("post-command-hook");
7699 staticpro (&Qpost_command_hook
);
7701 Qpost_command_idle_hook
= intern ("post-command-idle-hook");
7702 staticpro (&Qpost_command_idle_hook
);
7704 Qdeferred_action_function
= intern ("deferred-action-function");
7705 staticpro (&Qdeferred_action_function
);
7707 Qcommand_hook_internal
= intern ("command-hook-internal");
7708 staticpro (&Qcommand_hook_internal
);
7710 Qfunction_key
= intern ("function-key");
7711 staticpro (&Qfunction_key
);
7712 Qmouse_click
= intern ("mouse-click");
7713 staticpro (&Qmouse_click
);
7714 Qtimer_event
= intern ("timer-event");
7715 staticpro (&Qtimer_event
);
7717 Qmenu_enable
= intern ("menu-enable");
7718 staticpro (&Qmenu_enable
);
7720 Qmode_line
= intern ("mode-line");
7721 staticpro (&Qmode_line
);
7722 Qvertical_line
= intern ("vertical-line");
7723 staticpro (&Qvertical_line
);
7724 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
7725 staticpro (&Qvertical_scroll_bar
);
7726 Qmenu_bar
= intern ("menu-bar");
7727 staticpro (&Qmenu_bar
);
7729 Qabove_handle
= intern ("above-handle");
7730 staticpro (&Qabove_handle
);
7731 Qhandle
= intern ("handle");
7732 staticpro (&Qhandle
);
7733 Qbelow_handle
= intern ("below-handle");
7734 staticpro (&Qbelow_handle
);
7736 Qevent_kind
= intern ("event-kind");
7737 staticpro (&Qevent_kind
);
7738 Qevent_symbol_elements
= intern ("event-symbol-elements");
7739 staticpro (&Qevent_symbol_elements
);
7740 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
7741 staticpro (&Qevent_symbol_element_mask
);
7742 Qmodifier_cache
= intern ("modifier-cache");
7743 staticpro (&Qmodifier_cache
);
7745 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
7746 staticpro (&Qrecompute_lucid_menubar
);
7747 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
7748 staticpro (&Qactivate_menubar_hook
);
7750 Qpolling_period
= intern ("polling-period");
7751 staticpro (&Qpolling_period
);
7754 struct event_head
*p
;
7756 for (p
= head_table
;
7757 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
7760 *p
->var
= intern (p
->name
);
7762 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
7763 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
7767 button_down_location
= Fmake_vector (make_number (NUM_MOUSE_BUTTONS
), Qnil
);
7768 staticpro (&button_down_location
);
7772 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
7774 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
7775 for (i
= 0; i
< len
; i
++)
7776 if (modifier_names
[i
])
7777 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
7778 staticpro (&modifier_symbols
);
7781 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
7782 staticpro (&recent_keys
);
7784 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
7785 staticpro (&this_command_keys
);
7787 Qextended_command_history
= intern ("extended-command-history");
7788 Fset (Qextended_command_history
, Qnil
);
7789 staticpro (&Qextended_command_history
);
7791 kbd_buffer_frame_or_window
7792 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7793 staticpro (&kbd_buffer_frame_or_window
);
7795 accent_key_syms
= Qnil
;
7796 staticpro (&accent_key_syms
);
7798 func_key_syms
= Qnil
;
7799 staticpro (&func_key_syms
);
7802 staticpro (&mouse_syms
);
7804 unread_switch_frame
= Qnil
;
7805 staticpro (&unread_switch_frame
);
7807 defsubr (&Sevent_convert_list
);
7808 defsubr (&Sread_key_sequence
);
7809 defsubr (&Srecursive_edit
);
7811 defsubr (&Strack_mouse
);
7813 defsubr (&Sinput_pending_p
);
7814 defsubr (&Scommand_execute
);
7815 defsubr (&Srecent_keys
);
7816 defsubr (&Sthis_command_keys
);
7817 defsubr (&Sreset_this_command_lengths
);
7818 defsubr (&Ssuspend_emacs
);
7819 defsubr (&Sabort_recursive_edit
);
7820 defsubr (&Sexit_recursive_edit
);
7821 defsubr (&Srecursion_depth
);
7822 defsubr (&Stop_level
);
7823 defsubr (&Sdiscard_input
);
7824 defsubr (&Sopen_dribble_file
);
7825 defsubr (&Sset_input_mode
);
7826 defsubr (&Scurrent_input_mode
);
7827 defsubr (&Sexecute_extended_command
);
7829 DEFVAR_LISP ("last-command-char", &last_command_char
,
7830 "Last input event that was part of a command.");
7832 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
7833 "Last input event that was part of a command.");
7835 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
7836 "Last input event in a command, except for mouse menu events.\n\
7837 Mouse menus give back keys that don't look like mouse events;\n\
7838 this variable holds the actual mouse event that led to the menu,\n\
7839 so that you can determine whether the command was run by mouse or not.");
7841 DEFVAR_LISP ("last-input-char", &last_input_char
,
7842 "Last input event.");
7844 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
7845 "Last input event.");
7847 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
7848 "List of objects to be read as next command input events.");
7850 DEFVAR_INT ("unread-command-char", &unread_command_char
,
7851 "If not -1, an object to be read as next command input event.");
7853 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
7854 "Meta-prefix character code. Meta-foo as command input\n\
7855 turns into this character followed by foo.");
7856 XSETINT (meta_prefix_char
, 033);
7858 DEFVAR_KBOARD ("last-command", Vlast_command
,
7859 "The last command executed. Normally a symbol with a function definition,\n\
7860 but can be whatever was found in the keymap, or whatever the variable\n\
7861 `this-command' was set to by that command.\n\
7863 The value `mode-exit' is special; it means that the previous command\n\
7864 read an event that told it to exit, and it did so and unread that event.\n\
7865 In other words, the present command is the event that made the previous\n\
7868 The value `kill-region' is special; it means that the previous command\n\
7869 was a kill command.");
7871 DEFVAR_LISP ("this-command", &this_command
,
7872 "The command now being executed.\n\
7873 The command can set this variable; whatever is put here\n\
7874 will be in `last-command' during the following command.");
7875 this_command
= Qnil
;
7877 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
7878 "*Number of keyboard input characters between auto-saves.\n\
7879 Zero means disable autosaving due to number of characters typed.");
7880 auto_save_interval
= 300;
7882 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
7883 "*Number of seconds idle time before auto-save.\n\
7884 Zero or nil means disable auto-saving due to idleness.\n\
7885 After auto-saving due to this many seconds of idle time,\n\
7886 Emacs also does a garbage collection if that seems to be warranted.");
7887 XSETFASTINT (Vauto_save_timeout
, 30);
7889 DEFVAR_INT ("echo-keystrokes", &echo_keystrokes
,
7890 "*Nonzero means echo unfinished commands after this many seconds of pause.");
7891 echo_keystrokes
= 1;
7893 DEFVAR_INT ("polling-period", &polling_period
,
7894 "*Interval between polling for input during Lisp execution.\n\
7895 The reason for polling is to make C-g work to stop a running program.\n\
7896 Polling is needed only when using X windows and SIGIO does not work.\n\
7897 Polling is automatically disabled in all other cases.");
7900 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
7901 "*Maximum time between mouse clicks to make a double-click.\n\
7902 Measured in milliseconds. nil means disable double-click recognition;\n\
7903 t means double-clicks have no time limit and are detected\n\
7904 by position only.");
7905 Vdouble_click_time
= make_number (500);
7907 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
7908 "*Non-nil means inhibit local map menu bar menus.");
7909 inhibit_local_menu_bar_menus
= 0;
7911 DEFVAR_INT ("num-input-keys", &num_input_keys
,
7912 "Number of complete keys read from the keyboard so far.");
7915 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
7916 "The frame in which the most recently read event occurred.\n\
7917 If the last event came from a keyboard macro, this is set to `macro'.");
7918 Vlast_event_frame
= Qnil
;
7920 DEFVAR_LISP ("help-char", &Vhelp_char
,
7921 "Character to recognize as meaning Help.\n\
7922 When it is read, do `(eval help-form)', and display result if it's a string.\n\
7923 If the value of `help-form' is nil, this char can be read normally.");
7924 XSETINT (Vhelp_char
, Ctl ('H'));
7926 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
7927 "List of input events to recognize as meaning Help.\n\
7928 These work just like the value of `help-char' (see that).");
7929 Vhelp_event_list
= Qnil
;
7931 DEFVAR_LISP ("help-form", &Vhelp_form
,
7932 "Form to execute when character `help-char' is read.\n\
7933 If the form returns a string, that string is displayed.\n\
7934 If `help-form' is nil, the help char is not recognized.");
7937 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
7938 "Command to run when `help-char' character follows a prefix key.\n\
7939 This command is used only when there is no actual binding\n\
7940 for that character after that prefix key.");
7941 Vprefix_help_command
= Qnil
;
7943 DEFVAR_LISP ("top-level", &Vtop_level
,
7944 "Form to evaluate when Emacs starts up.\n\
7945 Useful to set before you dump a modified Emacs.");
7948 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
7949 "Translate table for keyboard input, or nil.\n\
7950 Each character is looked up in this string and the contents used instead.\n\
7951 The value may be a string, a vector, or a char-table.\n\
7952 If it is a string or vector of length N,\n\
7953 character codes N and up are untranslated.\n\
7954 In a vector or a char-table, an element which is nil means \"no translation\".");
7955 Vkeyboard_translate_table
= Qnil
;
7957 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
7958 "Non-nil means to always spawn a subshell instead of suspending,\n\
7959 even if the operating system has support for stopping a process.");
7962 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
7963 "Non-nil means prompt with menus when appropriate.\n\
7964 This is done when reading from a keymap that has a prompt string,\n\
7965 for elements that have prompt strings.\n\
7966 The menu is displayed on the screen\n\
7967 if X menus were enabled at configuration\n\
7968 time and the previous event was a mouse click prefix key.\n\
7969 Otherwise, menu prompting uses the echo area.");
7972 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
7973 "Character to see next line of menu prompt.\n\
7974 Type this character while in a menu prompt to rotate around the lines of it.");
7975 XSETINT (menu_prompt_more_char
, ' ');
7977 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
7978 "A mask of additional modifier keys to use with every keyboard character.\n\
7979 Emacs applies the modifiers of the character stored here to each keyboard\n\
7980 character it reads. For example, after evaluating the expression\n\
7981 (setq extra-keyboard-modifiers ?\\C-x)\n\
7982 all input characters will have the control modifier applied to them.\n\
7984 Note that the character ?\\C-@, equivalent to the integer zero, does\n\
7985 not count as a control character; rather, it counts as a character\n\
7986 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\
7987 cancels any modification.");
7988 extra_keyboard_modifiers
= 0;
7990 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
7991 "If an editing command sets this to t, deactivate the mark afterward.\n\
7992 The command loop sets this to nil before each command,\n\
7993 and tests the value when the command returns.\n\
7994 Buffer modification stores t in this variable.");
7995 Vdeactivate_mark
= Qnil
;
7997 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
7998 "Temporary storage of pre-command-hook or post-command-hook.");
7999 Vcommand_hook_internal
= Qnil
;
8001 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
8002 "Normal hook run before each command is executed.\n\
8003 Errors running the hook are caught and ignored.");
8004 Vpre_command_hook
= Qnil
;
8006 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
8007 "Normal hook run after each command is executed.\n\
8008 Errors running the hook are caught and ignored.");
8009 Vpost_command_hook
= Qnil
;
8011 DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook
,
8012 "Normal hook run after each command is executed, if idle.\n\
8013 Errors running the hook are caught and ignored.\n\
8014 This feature is obsolete; use idle timers instead. See `etc/NEWS'.");
8015 Vpost_command_idle_hook
= Qnil
;
8017 DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay
,
8018 "Delay time before running `post-command-idle-hook'.\n\
8019 This is measured in microseconds.");
8020 post_command_idle_delay
= 100000;
8022 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
8023 "t means menu bar, specified Lucid style, needs to be recomputed.");
8024 Vlucid_menu_bar_dirty_flag
= Qnil
;
8026 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
8027 "List of menu bar items to move to the end of the menu bar.\n\
8028 The elements of the list are event types that may have menu bar bindings.");
8029 Vmenu_bar_final_items
= Qnil
;
8031 DEFVAR_KBOARD ("overriding-terminal-local-map",
8032 Voverriding_terminal_local_map
,
8033 "Keymap that overrides all other local keymaps.\n\
8034 If this variable is non-nil, it is used as a keymap instead of the\n\
8035 buffer's local map, and the minor mode keymaps and text property keymaps.");
8037 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
8038 "Keymap that overrides all other local keymaps.\n\
8039 If this variable is non-nil, it is used as a keymap instead of the\n\
8040 buffer's local map, and the minor mode keymaps and text property keymaps.");
8041 Voverriding_local_map
= Qnil
;
8043 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
8044 "Non-nil means `overriding-local-map' applies to the menu bar.\n\
8045 Otherwise, the menu bar continues to reflect the buffer's local map\n\
8046 and the minor mode maps regardless of `overriding-local-map'.");
8047 Voverriding_local_map_menu_flag
= Qnil
;
8049 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
8050 "Keymap defining bindings for special events to execute at low level.");
8051 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
8053 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
8054 "*Non-nil means generate motion events for mouse motion.");
8056 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
8057 "Alist of system-specific X windows key symbols.\n\
8058 Each element should have the form (N . SYMBOL) where N is the\n\
8059 numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\
8060 and SYMBOL is its name.");
8062 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
8063 "List of deferred actions to be performed at a later time.\n\
8064 The precise format isn't relevant here; we just check whether it is nil.");
8065 Vdeferred_action_list
= Qnil
;
8067 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
8068 "Function to call to handle deferred actions, after each command.\n\
8069 This function is called with no arguments after each command\n\
8070 whenever `deferred-action-list' is non-nil.");
8071 Vdeferred_action_function
= Qnil
;
8073 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
8074 "Non-nil means show the equivalent key-binding when M-x command has one.\n\
8075 The value can be a length of time to show the message for.\n\
8076 If the value is non-nil and not a number, we wait 2 seconds.");
8077 Vsuggest_key_bindings
= Qt
;
8079 DEFVAR_LISP ("column-number-mode", &Vcolumn_number_mode
,
8080 "Non-nil enables display of the current column number in the mode line.");
8081 Vcolumn_number_mode
= Qnil
;
8083 DEFVAR_LISP ("timer-list", &Vtimer_list
,
8084 "List of active absolute time timers in order of increasing time");
8087 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
8088 "List of active idle-time timers in order of increasing time");
8089 Vtimer_idle_list
= Qnil
;
8094 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
8095 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
8096 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
8097 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
8098 initial_define_key (meta_map
, 'x', "execute-extended-command");
8100 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
8101 "handle-delete-frame");
8102 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
8104 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",