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
&& !detect_input_pending ())
1753 /* Message turns off echoing unless more keystrokes turn it on again. */
1754 if (echo_area_glyphs
&& *echo_area_glyphs
1755 && echo_area_glyphs
!= current_kboard
->echobuf
1756 && ok_to_echo_at_next_pause
!= echo_area_glyphs
)
1759 /* If already echoing, continue. */
1762 /* Try reading a character via menu prompting in the minibuf.
1763 Try this before the sit-for, because the sit-for
1764 would do the wrong thing if we are supposed to do
1765 menu prompting. If EVENT_HAS_PARAMETERS then we are reading
1766 after a mouse event so don't try a minibuf menu. */
1768 if (nmaps
> 0 && INTERACTIVE
1769 && !NILP (prev_event
) && ! EVENT_HAS_PARAMETERS (prev_event
)
1770 /* Don't bring up a menu if we already have another event. */
1771 && NILP (Vunread_command_events
)
1772 && unread_command_char
< 0
1773 && !detect_input_pending ())
1775 c
= read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
);
1778 key_already_recorded
= 1;
1783 /* Make a longjmp point for quits to use, but don't alter getcjmp just yet.
1784 We will do that below, temporarily for short sections of code,
1785 when appropriate. local_getcjmp must be in effect
1786 around any call to sit_for or kbd_buffer_get_event;
1787 it *must not* be in effect when we call redisplay. */
1789 if (_setjmp (local_getcjmp
))
1791 XSETINT (c
, quit_char
);
1793 XSETFRAME (internal_last_event_frame
, selected_frame
);
1794 Vlast_event_frame
= internal_last_event_frame
;
1796 /* If we report the quit char as an event,
1797 don't do so more than once. */
1798 if (!NILP (Vinhibit_quit
))
1803 KBOARD
*kb
= FRAME_KBOARD (selected_frame
);
1804 if (kb
!= current_kboard
)
1806 Lisp_Object
*tailp
= &kb
->kbd_queue
;
1807 /* We shouldn't get here if we were in single-kboard mode! */
1810 while (CONSP (*tailp
))
1811 tailp
= &XCONS (*tailp
)->cdr
;
1814 *tailp
= Fcons (c
, Qnil
);
1815 kb
->kbd_queue_has_data
= 1;
1816 current_kboard
= kb
;
1817 longjmp (wrong_kboard_jmpbuf
, 1);
1824 timer_start_idle ();
1826 /* If in middle of key sequence and minibuffer not active,
1827 start echoing if enough time elapses. */
1829 if (minibuf_level
== 0 && !current_kboard
->immediate_echo
1830 && this_command_key_count
> 0
1832 && echo_keystrokes
> 0
1833 && (echo_area_glyphs
== 0 || *echo_area_glyphs
== 0
1834 || ok_to_echo_at_next_pause
== echo_area_glyphs
))
1838 /* After a mouse event, start echoing right away.
1839 This is because we are probably about to display a menu,
1840 and we don't want to delay before doing so. */
1841 if (EVENT_HAS_PARAMETERS (prev_event
))
1845 save_getcjmp (save_jump
);
1846 restore_getcjmp (local_getcjmp
);
1847 tem0
= sit_for (echo_keystrokes
, 0, 1, 1);
1848 restore_getcjmp (save_jump
);
1854 /* Maybe auto save due to number of keystrokes. */
1856 if (commandflag
!= 0
1857 && auto_save_interval
> 0
1858 && num_nonmacro_input_chars
- last_auto_save
> max (auto_save_interval
, 20)
1859 && !detect_input_pending ())
1861 Fdo_auto_save (Qnil
, Qnil
);
1862 /* Hooks can actually change some buffers in auto save. */
1866 /* Try reading using an X menu.
1867 This is never confused with reading using the minibuf
1868 because the recursive call of read_char in read_char_minibuf_menu_prompt
1869 does not pass on any keymaps. */
1871 if (nmaps
> 0 && INTERACTIVE
1872 && !NILP (prev_event
)
1873 && EVENT_HAS_PARAMETERS (prev_event
)
1874 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
)
1875 /* Don't bring up a menu if we already have another event. */
1876 && NILP (Vunread_command_events
)
1877 && unread_command_char
< 0)
1878 c
= read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
);
1880 /* Maybe autosave and/or garbage collect due to idleness. */
1882 if (INTERACTIVE
&& NILP (c
))
1884 int delay_level
, buffer_size
;
1886 /* Slow down auto saves logarithmically in size of current buffer,
1887 and garbage collect while we're at it. */
1888 if (! MINI_WINDOW_P (XWINDOW (selected_window
)))
1889 last_non_minibuf_size
= Z
- BEG
;
1890 buffer_size
= (last_non_minibuf_size
>> 8) + 1;
1892 while (buffer_size
> 64)
1893 delay_level
++, buffer_size
-= buffer_size
>> 2;
1894 if (delay_level
< 4) delay_level
= 4;
1895 /* delay_level is 4 for files under around 50k, 7 at 100k,
1896 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */
1898 /* Auto save if enough time goes by without input. */
1899 if (commandflag
!= 0
1900 && num_nonmacro_input_chars
> last_auto_save
1901 && INTEGERP (Vauto_save_timeout
)
1902 && XINT (Vauto_save_timeout
) > 0)
1906 save_getcjmp (save_jump
);
1907 restore_getcjmp (local_getcjmp
);
1908 tem0
= sit_for (delay_level
* XFASTINT (Vauto_save_timeout
) / 4,
1910 restore_getcjmp (save_jump
);
1914 Fdo_auto_save (Qnil
, Qnil
);
1916 /* If we have auto-saved and there is still no input
1917 available, garbage collect if there has been enough
1918 consing going on to make it worthwhile. */
1919 if (!detect_input_pending ()
1920 && consing_since_gc
> gc_cons_threshold
/ 2)
1921 Fgarbage_collect ();
1928 /* Read something from current KBOARD's side queue, if possible. */
1932 if (current_kboard
->kbd_queue_has_data
)
1934 if (!CONSP (current_kboard
->kbd_queue
))
1936 c
= XCONS (current_kboard
->kbd_queue
)->car
;
1937 current_kboard
->kbd_queue
1938 = XCONS (current_kboard
->kbd_queue
)->cdr
;
1939 if (NILP (current_kboard
->kbd_queue
))
1940 current_kboard
->kbd_queue_has_data
= 0;
1941 input_pending
= readable_events (0);
1943 if (EVENT_HAS_PARAMETERS (c
)
1944 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qswitch_frame
))
1945 internal_last_event_frame
= XCONS (XCONS (c
)->cdr
)->car
;
1946 Vlast_event_frame
= internal_last_event_frame
;
1952 /* If current_kboard's side queue is empty check the other kboards.
1953 If one of them has data that we have not yet seen here,
1954 switch to it and process the data waiting for it.
1956 Note: if the events queued up for another kboard
1957 have already been seen here, and therefore are not a complete command,
1958 the kbd_queue_has_data field is 0, so we skip that kboard here.
1959 That's to avoid an infinite loop switching between kboards here. */
1960 if (NILP (c
) && !single_kboard
)
1963 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
1964 if (kb
->kbd_queue_has_data
)
1966 current_kboard
= kb
;
1967 longjmp (wrong_kboard_jmpbuf
, 1);
1976 /* Finally, we read from the main queue,
1977 and if that gives us something we can't use yet, we put it on the
1978 appropriate side queue and try again. */
1984 /* Actually read a character, waiting if necessary. */
1985 save_getcjmp (save_jump
);
1986 restore_getcjmp (local_getcjmp
);
1987 c
= kbd_buffer_get_event (&kb
, used_mouse_menu
);
1988 restore_getcjmp (save_jump
);
1991 if (! NILP (c
) && (kb
!= current_kboard
))
1993 Lisp_Object
*tailp
= &kb
->kbd_queue
;
1994 while (CONSP (*tailp
))
1995 tailp
= &XCONS (*tailp
)->cdr
;
1998 *tailp
= Fcons (c
, Qnil
);
1999 kb
->kbd_queue_has_data
= 1;
2003 current_kboard
= kb
;
2004 longjmp (wrong_kboard_jmpbuf
, 1);
2009 /* Terminate Emacs in batch mode if at eof. */
2010 if (noninteractive
&& INTEGERP (c
) && XINT (c
) < 0)
2011 Fkill_emacs (make_number (1));
2015 /* Add in any extra modifiers, where appropriate. */
2016 if ((extra_keyboard_modifiers
& CHAR_CTL
)
2017 || ((extra_keyboard_modifiers
& 0177) < ' '
2018 && (extra_keyboard_modifiers
& 0177) != 0))
2019 XSETINT (c
, make_ctrl_char (XINT (c
)));
2021 /* Transfer any other modifier bits directly from
2022 extra_keyboard_modifiers to c. Ignore the actual character code
2023 in the low 16 bits of extra_keyboard_modifiers. */
2024 XSETINT (c
, XINT (c
) | (extra_keyboard_modifiers
& ~0xff7f & ~CHAR_CTL
));
2029 /* Now that we have read an event, Emacs is not idle--
2030 unless the event was a timer event. */
2031 if (! (CONSP (c
) && EQ (XCONS (c
)->car
, Qtimer_event
)))
2038 if (commandflag
>= 0
2039 && !input_pending
&& !detect_input_pending ())
2047 /* Buffer switch events are only for internal wakeups
2048 so don't show them to the user. */
2052 if (key_already_recorded
)
2055 /* Process special events within read_char
2056 and loop around to read another event. */
2059 tem
= get_keyelt (access_keymap (get_keymap_1 (Vspecial_event_map
, 0, 0),
2065 int was_locked
= single_kboard
;
2067 last_input_char
= c
;
2068 Fcommand_execute (tem
, Qnil
, Fvector (1, &last_input_char
), Qt
);
2070 /* Resume allowing input from any kboard, if that was true before. */
2072 any_kboard_state ();
2077 /* Wipe the echo area. */
2078 echo_area_glyphs
= 0;
2080 /* Handle things that only apply to characters. */
2083 /* If kbd_buffer_get_event gave us an EOF, return that. */
2087 if (STRINGP (Vkeyboard_translate_table
)
2088 && XSTRING (Vkeyboard_translate_table
)->size
> XFASTINT (c
))
2089 XSETINT (c
, XSTRING (Vkeyboard_translate_table
)->data
[XFASTINT (c
)]);
2090 else if ((VECTORP (Vkeyboard_translate_table
)
2091 && XVECTOR (Vkeyboard_translate_table
)->size
> XFASTINT (c
))
2092 || CHAR_TABLE_P (Vkeyboard_translate_table
))
2095 d
= Faref (Vkeyboard_translate_table
, c
);
2096 /* nil in keyboard-translate-table means no translation. */
2102 /* If this event is a mouse click in the menu bar,
2103 return just menu-bar for now. Modify the mouse click event
2104 so we won't do this twice, then queue it up. */
2105 if (EVENT_HAS_PARAMETERS (c
)
2106 && CONSP (XCONS (c
)->cdr
)
2107 && CONSP (EVENT_START (c
))
2108 && CONSP (XCONS (EVENT_START (c
))->cdr
))
2112 posn
= POSN_BUFFER_POSN (EVENT_START (c
));
2113 /* Handle menu-bar events:
2114 insert the dummy prefix event `menu-bar'. */
2115 if (EQ (posn
, Qmenu_bar
))
2117 /* Change menu-bar to (menu-bar) as the event "position". */
2118 POSN_BUFFER_POSN (EVENT_START (c
)) = Fcons (posn
, Qnil
);
2121 Vunread_command_events
= Fcons (c
, Vunread_command_events
);
2127 if (! NILP (also_record
))
2128 record_char (also_record
);
2132 before_command_key_count
= this_command_key_count
;
2133 before_command_echo_length
= echo_length ();
2135 /* Don't echo mouse motion events. */
2137 && ! (EVENT_HAS_PARAMETERS (c
)
2138 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c
)), Qmouse_movement
)))
2141 if (! NILP (also_record
))
2142 echo_char (also_record
);
2143 /* Once we reread a character, echoing can happen
2144 the next time we pause to read a new one. */
2145 ok_to_echo_at_next_pause
= echo_area_glyphs
;
2148 /* Record this character as part of the current key. */
2149 add_command_key (c
);
2150 if (! NILP (also_record
))
2151 add_command_key (also_record
);
2153 /* Re-reading in the middle of a command */
2155 last_input_char
= c
;
2158 /* Process the help character specially if enabled */
2159 if (!NILP (Vhelp_form
) && help_char_p (c
))
2162 count
= specpdl_ptr
- specpdl
;
2164 record_unwind_protect (Fset_window_configuration
,
2165 Fcurrent_window_configuration (Qnil
));
2167 tem0
= Feval (Vhelp_form
);
2169 internal_with_output_to_temp_buffer ("*Help*", print_help
, tem0
);
2173 c
= read_char (0, 0, 0, Qnil
, 0);
2174 while (BUFFERP (c
));
2175 /* Remove the help from the frame */
2176 unbind_to (count
, Qnil
);
2179 if (EQ (c
, make_number (040)))
2183 c
= read_char (0, 0, 0, Qnil
, 0);
2184 while (BUFFERP (c
));
2191 /* Return 1 if should recognize C as "the help character". */
2199 if (EQ (c
, Vhelp_char
))
2201 for (tail
= Vhelp_event_list
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
2202 if (EQ (c
, XCONS (tail
)->car
))
2207 /* Record the input event C in various ways. */
2214 XVECTOR (recent_keys
)->contents
[recent_keys_index
] = c
;
2215 if (++recent_keys_index
>= NUM_RECENT_KEYS
)
2216 recent_keys_index
= 0;
2218 /* Write c to the dribble file. If c is a lispy event, write
2219 the event's symbol to the dribble file, in <brackets>. Bleaugh.
2220 If you, dear reader, have a better idea, you've got the source. :-) */
2225 if (XUINT (c
) < 0x100)
2226 putc (XINT (c
), dribble
);
2228 fprintf (dribble
, " 0x%x", (int) XUINT (c
));
2232 Lisp_Object dribblee
;
2234 /* If it's a structured event, take the event header. */
2235 dribblee
= EVENT_HEAD (c
);
2237 if (SYMBOLP (dribblee
))
2239 putc ('<', dribble
);
2240 fwrite (XSYMBOL (dribblee
)->name
->data
, sizeof (char),
2241 XSYMBOL (dribblee
)->name
->size
,
2243 putc ('>', dribble
);
2250 store_kbd_macro_char (c
);
2252 num_nonmacro_input_chars
++;
2259 struct buffer
*old
= current_buffer
;
2260 Fprinc (object
, Qnil
);
2261 set_buffer_internal (XBUFFER (Vstandard_output
));
2262 call0 (intern ("help-mode"));
2263 set_buffer_internal (old
);
2267 /* Copy out or in the info on where C-g should throw to.
2268 This is used when running Lisp code from within get_char,
2269 in case get_char is called recursively.
2270 See read_process_output. */
2275 bcopy (getcjmp
, temp
, sizeof getcjmp
);
2278 restore_getcjmp (temp
)
2281 bcopy (temp
, getcjmp
, sizeof getcjmp
);
2286 /* Restore mouse tracking enablement. See Ftrack_mouse for the only use
2287 of this function. */
2290 tracking_off (old_value
)
2291 Lisp_Object old_value
;
2293 do_mouse_tracking
= old_value
;
2294 if (NILP (old_value
))
2296 /* Redisplay may have been preempted because there was input
2297 available, and it assumes it will be called again after the
2298 input has been processed. If the only input available was
2299 the sort that we have just disabled, then we need to call
2301 if (!readable_events (1))
2303 redisplay_preserve_echo_area ();
2304 get_input_pending (&input_pending
, 1);
2309 DEFUN ("track-mouse", Ftrack_mouse
, Strack_mouse
, 0, UNEVALLED
, 0,
2310 "Evaluate BODY with mouse movement events enabled.\n\
2311 Within a `track-mouse' form, mouse motion generates input events that\n\
2312 you can read with `read-event'.\n\
2313 Normally, mouse motion is ignored.")
2317 int count
= specpdl_ptr
- specpdl
;
2320 record_unwind_protect (tracking_off
, do_mouse_tracking
);
2322 do_mouse_tracking
= Qt
;
2324 val
= Fprogn (args
);
2325 return unbind_to (count
, val
);
2328 /* If mouse has moved on some frame, return one of those frames.
2329 Return 0 otherwise. */
2334 Lisp_Object tail
, frame
;
2336 FOR_EACH_FRAME (tail
, frame
)
2338 if (XFRAME (frame
)->mouse_moved
)
2339 return XFRAME (frame
);
2345 #endif /* HAVE_MOUSE */
2347 /* Low level keyboard/mouse input.
2348 kbd_buffer_store_event places events in kbd_buffer, and
2349 kbd_buffer_get_event retrieves them. */
2351 /* Return true iff there are any events in the queue that read-char
2352 would return. If this returns false, a read-char would block. */
2354 readable_events (do_timers_now
)
2357 timer_check (do_timers_now
);
2358 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2361 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2366 if (current_kboard
->kbd_queue_has_data
)
2372 for (kb
= all_kboards
; kb
; kb
= kb
->next_kboard
)
2373 if (kb
->kbd_queue_has_data
)
2379 /* Set this for debugging, to have a way to get out */
2384 event_to_kboard (event
)
2385 struct input_event
*event
;
2388 frame
= event
->frame_or_window
;
2390 frame
= XCONS (frame
)->car
;
2391 else if (WINDOWP (frame
))
2392 frame
= WINDOW_FRAME (XWINDOW (frame
));
2394 /* There are still some events that don't set this field.
2395 For now, just ignore the problem.
2396 Also ignore dead frames here. */
2397 if (!FRAMEP (frame
) || !FRAME_LIVE_P (XFRAME (frame
)))
2400 return FRAME_KBOARD (XFRAME (frame
));
2404 /* Store an event obtained at interrupt level into kbd_buffer, fifo */
2407 kbd_buffer_store_event (event
)
2408 register struct input_event
*event
;
2410 if (event
->kind
== no_event
)
2413 if (event
->kind
== ascii_keystroke
)
2415 register int c
= event
->code
& 0377;
2417 if (event
->modifiers
& ctrl_modifier
)
2418 c
= make_ctrl_char (c
);
2420 c
|= (event
->modifiers
2421 & (meta_modifier
| alt_modifier
2422 | hyper_modifier
| super_modifier
));
2426 extern SIGTYPE
interrupt_signal ();
2429 struct input_event
*sp
;
2432 && (kb
= FRAME_KBOARD (XFRAME (event
->frame_or_window
)),
2433 kb
!= current_kboard
))
2436 = Fcons (make_lispy_switch_frame (event
->frame_or_window
),
2437 Fcons (make_number (c
), Qnil
));
2438 kb
->kbd_queue_has_data
= 1;
2439 for (sp
= kbd_fetch_ptr
; sp
!= kbd_store_ptr
; sp
++)
2441 if (sp
== kbd_buffer
+ KBD_BUFFER_SIZE
)
2444 if (event_to_kboard (sp
) == kb
)
2446 sp
->kind
= no_event
;
2447 sp
->frame_or_window
= Qnil
;
2455 /* If this results in a quit_char being returned to Emacs as
2456 input, set Vlast_event_frame properly. If this doesn't
2457 get returned to Emacs as an event, the next event read
2458 will set Vlast_event_frame again, so this is safe to do. */
2462 focus
= FRAME_FOCUS_FRAME (XFRAME (event
->frame_or_window
));
2464 focus
= event
->frame_or_window
;
2465 internal_last_event_frame
= focus
;
2466 Vlast_event_frame
= focus
;
2470 last_event_timestamp
= event
->timestamp
;
2471 interrupt_signal ();
2475 if (c
&& c
== stop_character
)
2481 /* Don't insert two buffer_switch_event's in a row.
2482 Just ignore the second one. */
2483 else if (event
->kind
== buffer_switch_event
2484 && kbd_fetch_ptr
!= kbd_store_ptr
2485 && kbd_store_ptr
->kind
== buffer_switch_event
)
2488 if (kbd_store_ptr
- kbd_buffer
== KBD_BUFFER_SIZE
)
2489 kbd_store_ptr
= kbd_buffer
;
2491 /* Don't let the very last slot in the buffer become full,
2492 since that would make the two pointers equal,
2493 and that is indistinguishable from an empty buffer.
2494 Discard the event if it would fill the last slot. */
2495 if (kbd_fetch_ptr
- 1 != kbd_store_ptr
)
2497 volatile struct input_event
*sp
= kbd_store_ptr
;
2498 sp
->kind
= event
->kind
;
2499 if (event
->kind
== selection_request_event
)
2501 /* We must not use the ordinary copying code for this case,
2502 since `part' is an enum and copying it might not copy enough
2504 bcopy (event
, (char *) sp
, sizeof (*event
));
2508 sp
->code
= event
->code
;
2509 sp
->part
= event
->part
;
2510 sp
->frame_or_window
= event
->frame_or_window
;
2511 sp
->modifiers
= event
->modifiers
;
2514 sp
->timestamp
= event
->timestamp
;
2516 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_store_ptr
2518 = event
->frame_or_window
);
2524 /* Read one event from the event buffer, waiting if necessary.
2525 The value is a Lisp object representing the event.
2526 The value is nil for an event that should be ignored,
2527 or that was handled here.
2528 We always read and discard one event. */
2531 kbd_buffer_get_event (kbp
, used_mouse_menu
)
2533 int *used_mouse_menu
;
2537 EMACS_TIME next_timer_delay
;
2543 *kbp
= current_kboard
;
2547 /* Wait until there is input available. */
2550 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2553 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2557 /* If the quit flag is set, then read_char will return
2558 quit_char, so that counts as "available input." */
2559 if (!NILP (Vquit_flag
))
2560 quit_throw_to_read_char ();
2562 /* One way or another, wait until input is available; then, if
2563 interrupt handlers have not read it, read it now. */
2566 wait_for_kbd_input ();
2568 /* Note SIGIO has been undef'd if FIONREAD is missing. */
2572 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2575 if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2579 Lisp_Object minus_one
;
2581 XSETINT (minus_one
, -1);
2582 wait_reading_process_input (0, 0, minus_one
, 1);
2584 if (!interrupt_input
&& kbd_fetch_ptr
== kbd_store_ptr
)
2585 /* Pass 1 for EXPECT since we just waited to have input. */
2586 read_avail_input (1);
2588 #endif /* not VMS */
2591 /* At this point, we know that there is a readable event available
2592 somewhere. If the event queue is empty, then there must be a
2593 mouse movement enabled and available. */
2594 if (kbd_fetch_ptr
!= kbd_store_ptr
)
2596 struct input_event
*event
;
2598 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2602 last_event_timestamp
= event
->timestamp
;
2605 *kbp
= event_to_kboard (event
);
2607 *kbp
= current_kboard
; /* Better than returning null ptr? */
2609 *kbp
= &the_only_kboard
;
2614 /* These two kinds of events get special handling
2615 and don't actually appear to the command loop.
2616 We return nil for them. */
2617 if (event
->kind
== selection_request_event
)
2620 struct input_event copy
;
2622 /* Remove it from the buffer before processing it,
2623 since otherwise swallow_events will see it
2624 and process it again. */
2626 kbd_fetch_ptr
= event
+ 1;
2627 input_pending
= readable_events (0);
2628 x_handle_selection_request (©
);
2630 /* We're getting selection request events, but we don't have
2636 else if (event
->kind
== selection_clear_event
)
2639 struct input_event copy
;
2641 /* Remove it from the buffer before processing it. */
2643 kbd_fetch_ptr
= event
+ 1;
2644 input_pending
= readable_events (0);
2645 x_handle_selection_clear (©
);
2647 /* We're getting selection request events, but we don't have
2652 #if defined (HAVE_X11) || defined (HAVE_NTGUI)
2653 else if (event
->kind
== delete_window_event
)
2655 /* Make an event (delete-frame (FRAME)). */
2656 obj
= Fcons (event
->frame_or_window
, Qnil
);
2657 obj
= Fcons (Qdelete_frame
, Fcons (obj
, Qnil
));
2658 kbd_fetch_ptr
= event
+ 1;
2660 else if (event
->kind
== iconify_event
)
2662 /* Make an event (iconify-frame (FRAME)). */
2663 obj
= Fcons (event
->frame_or_window
, Qnil
);
2664 obj
= Fcons (Qiconify_frame
, Fcons (obj
, Qnil
));
2665 kbd_fetch_ptr
= event
+ 1;
2667 else if (event
->kind
== deiconify_event
)
2669 /* Make an event (make-frame-visible (FRAME)). */
2670 obj
= Fcons (event
->frame_or_window
, Qnil
);
2671 obj
= Fcons (Qmake_frame_visible
, Fcons (obj
, Qnil
));
2672 kbd_fetch_ptr
= event
+ 1;
2675 else if (event
->kind
== buffer_switch_event
)
2677 /* The value doesn't matter here; only the type is tested. */
2678 XSETBUFFER (obj
, current_buffer
);
2679 kbd_fetch_ptr
= event
+ 1;
2681 #ifdef USE_X_TOOLKIT
2682 else if (event
->kind
== menu_bar_activate_event
)
2684 kbd_fetch_ptr
= event
+ 1;
2685 input_pending
= readable_events (0);
2686 x_activate_menubar (XFRAME (event
->frame_or_window
));
2689 /* Just discard these, by returning nil.
2690 With MULTI_KBOARD, these events are used as placeholders
2691 when we need to randomly delete events from the queue.
2692 (They shouldn't otherwise be found in the buffer,
2693 but on some machines it appears they do show up
2694 even without MULTI_KBOARD.) */
2695 else if (event
->kind
== no_event
)
2696 kbd_fetch_ptr
= event
+ 1;
2698 /* If this event is on a different frame, return a switch-frame this
2699 time, and leave the event in the queue for next time. */
2706 frame
= event
->frame_or_window
;
2708 frame
= XCONS (frame
)->car
;
2709 else if (WINDOWP (frame
))
2710 frame
= WINDOW_FRAME (XWINDOW (frame
));
2712 focus
= FRAME_FOCUS_FRAME (XFRAME (frame
));
2716 if (! EQ (frame
, internal_last_event_frame
)
2717 && XFRAME (frame
) != selected_frame
)
2718 obj
= make_lispy_switch_frame (frame
);
2719 internal_last_event_frame
= frame
;
2720 #endif /* MULTI_FRAME */
2722 /* If we didn't decide to make a switch-frame event, go ahead
2723 and build a real event from the queue entry. */
2727 obj
= make_lispy_event (event
);
2728 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
2729 /* If this was a menu selection, then set the flag to inhibit
2730 writing to last_nonmenu_event. Don't do this if the event
2731 we're returning is (menu-bar), though; that indicates the
2732 beginning of the menu sequence, and we might as well leave
2733 that as the `event with parameters' for this selection. */
2734 if (event
->kind
== menu_bar_event
2735 && !(CONSP (obj
) && EQ (XCONS (obj
)->car
, Qmenu_bar
))
2737 *used_mouse_menu
= 1;
2740 /* Wipe out this event, to catch bugs. */
2741 event
->kind
= no_event
;
2742 XVECTOR (kbd_buffer_frame_or_window
)->contents
[event
- kbd_buffer
] = Qnil
;
2744 kbd_fetch_ptr
= event
+ 1;
2749 /* Try generating a mouse motion event. */
2750 else if (!NILP (do_mouse_tracking
) && some_mouse_moved ())
2752 FRAME_PTR f
= some_mouse_moved ();
2753 Lisp_Object bar_window
;
2754 enum scroll_bar_part part
;
2758 *kbp
= current_kboard
;
2759 /* Note that this uses F to determine which display to look at.
2760 If there is no valid info, it does not store anything
2761 so x remains nil. */
2763 (*mouse_position_hook
) (&f
, 0, &bar_window
, &part
, &x
, &y
, &time
);
2768 /* Decide if we should generate a switch-frame event. Don't
2769 generate switch-frame events for motion outside of all Emacs
2775 frame
= FRAME_FOCUS_FRAME (f
);
2777 XSETFRAME (frame
, f
);
2779 if (! EQ (frame
, internal_last_event_frame
)
2780 && XFRAME (frame
) != selected_frame
)
2781 obj
= make_lispy_switch_frame (frame
);
2782 internal_last_event_frame
= frame
;
2786 /* If we didn't decide to make a switch-frame event, go ahead and
2787 return a mouse-motion event. */
2788 if (!NILP (x
) && NILP (obj
))
2789 obj
= make_lispy_movement (f
, bar_window
, part
, x
, y
, time
);
2791 #endif /* HAVE_MOUSE */
2793 /* We were promised by the above while loop that there was
2794 something for us to read! */
2797 input_pending
= readable_events (0);
2800 Vlast_event_frame
= internal_last_event_frame
;
2806 /* Process any events that are not user-visible,
2807 then return, without reading any user-visible events. */
2810 swallow_events (do_display
)
2815 while (kbd_fetch_ptr
!= kbd_store_ptr
)
2817 struct input_event
*event
;
2819 event
= ((kbd_fetch_ptr
< kbd_buffer
+ KBD_BUFFER_SIZE
)
2823 last_event_timestamp
= event
->timestamp
;
2825 /* These two kinds of events get special handling
2826 and don't actually appear to the command loop. */
2827 if (event
->kind
== selection_request_event
)
2830 struct input_event copy
;
2832 /* Remove it from the buffer before processing it,
2833 since otherwise swallow_events called recursively could see it
2834 and process it again. */
2836 kbd_fetch_ptr
= event
+ 1;
2837 input_pending
= readable_events (0);
2838 x_handle_selection_request (©
);
2840 /* We're getting selection request events, but we don't have
2846 else if (event
->kind
== selection_clear_event
)
2849 struct input_event copy
;
2851 /* Remove it from the buffer before processing it, */
2854 kbd_fetch_ptr
= event
+ 1;
2855 input_pending
= readable_events (0);
2856 x_handle_selection_clear (©
);
2858 /* We're getting selection request events, but we don't have
2863 else if (event
->kind
== timer_event
)
2865 Lisp_Object tem
, lisp_event
;
2866 int was_locked
= single_kboard
;
2868 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
2869 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
2871 lisp_event
= Fcons (Qtimer_event
,
2872 Fcons (Fcdr (event
->frame_or_window
), Qnil
));
2873 kbd_fetch_ptr
= event
+ 1;
2874 if (kbd_fetch_ptr
== kbd_store_ptr
)
2876 Fcommand_execute (tem
, Qnil
, Fvector (1, &lisp_event
), Qt
);
2879 redisplay_preserve_echo_area ();
2881 /* Resume allowing input from any kboard, if that was true before. */
2883 any_kboard_state ();
2889 old_timers_run
= timers_run
;
2890 get_input_pending (&input_pending
, 1);
2892 if (timers_run
!= old_timers_run
&& do_display
)
2893 redisplay_preserve_echo_area ();
2896 static EMACS_TIME timer_idleness_start_time
;
2898 /* Record the start of when Emacs is idle,
2899 for the sake of running idle-time timers. */
2905 /* If we are already in the idle state, do nothing. */
2906 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2909 EMACS_GET_TIME (timer_idleness_start_time
);
2911 /* Mark all idle-time timers as once again candidates for running. */
2912 for (timers
= Vtimer_idle_list
; CONSP (timers
); timers
= XCONS (timers
)->cdr
)
2916 timer
= XCONS (timers
)->car
;
2918 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
2920 XVECTOR (timer
)->contents
[0] = Qnil
;
2924 /* Record that Emacs is no longer idle, so stop running idle-time timers. */
2928 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
2931 /* Check whether a timer has fired. To prevent larger problems we simply
2932 disregard elements that are not proper timers. Do not make a circular
2933 timer list for the time being.
2935 Returns the number of seconds to wait until the next timer fires. If a
2936 timer is triggering now, return zero seconds.
2937 If no timer is active, return -1 seconds.
2939 If a timer is ripe now, either queue a timer-event,
2940 or call the timer's handler function here if DO_IT_NOW is nonzero. */
2943 timer_check (do_it_now
)
2946 EMACS_TIME nexttime
;
2947 EMACS_TIME now
, idleness_now
;
2948 Lisp_Object timers
, idle_timers
, chosen_timer
;
2949 /* Nonzero if we generate some events. */
2950 int events_generated
= 0;
2951 struct gcpro gcpro1
, gcpro2
, gcpro3
;
2953 EMACS_SET_SECS (nexttime
, -1);
2954 EMACS_SET_USECS (nexttime
, -1);
2956 /* Always consider the ordinary timers. */
2957 timers
= Vtimer_list
;
2958 /* Consider the idle timers only if Emacs is idle. */
2959 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2960 idle_timers
= Vtimer_idle_list
;
2963 chosen_timer
= Qnil
;
2964 GCPRO3 (timers
, idle_timers
, chosen_timer
);
2966 if (CONSP (timers
) || CONSP (idle_timers
))
2968 EMACS_GET_TIME (now
);
2969 if (! EMACS_TIME_NEG_P (timer_idleness_start_time
))
2970 EMACS_SUB_TIME (idleness_now
, now
, timer_idleness_start_time
);
2973 while (CONSP (timers
) || CONSP (idle_timers
))
2975 int triggertime
= EMACS_SECS (now
);
2976 Lisp_Object
*vector
;
2977 Lisp_Object timer
, idle_timer
;
2978 EMACS_TIME timer_time
, idle_timer_time
;
2979 EMACS_TIME difference
, timer_difference
, idle_timer_difference
;
2981 /* Skip past invalid timers and timers already handled. */
2984 timer
= XCONS (timers
)->car
;
2985 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
2987 timers
= XCONS (timers
)->cdr
;
2990 vector
= XVECTOR (timer
)->contents
;
2992 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
2993 || !INTEGERP (vector
[3])
2994 || ! NILP (vector
[0]))
2996 timers
= XCONS (timers
)->cdr
;
3000 if (!NILP (idle_timers
))
3002 timer
= XCONS (idle_timers
)->car
;
3003 if (!VECTORP (timer
) || XVECTOR (timer
)->size
!= 8)
3005 idle_timers
= XCONS (idle_timers
)->cdr
;
3008 vector
= XVECTOR (timer
)->contents
;
3010 if (!INTEGERP (vector
[1]) || !INTEGERP (vector
[2])
3011 || !INTEGERP (vector
[3])
3012 || ! NILP (vector
[0]))
3014 idle_timers
= XCONS (idle_timers
)->cdr
;
3019 /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE
3020 based on the next ordinary timer.
3021 TIMER_DIFFERENCE is the distance in time from NOW to when
3022 this timer becomes ripe (negative if it's already ripe). */
3025 timer
= XCONS (timers
)->car
;
3026 vector
= XVECTOR (timer
)->contents
;
3027 EMACS_SET_SECS (timer_time
,
3028 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3029 EMACS_SET_USECS (timer_time
, XINT (vector
[3]));
3030 EMACS_SUB_TIME (timer_difference
, timer_time
, now
);
3033 /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE
3034 based on the next idle timer. */
3035 if (!NILP (idle_timers
))
3037 idle_timer
= XCONS (idle_timers
)->car
;
3038 vector
= XVECTOR (idle_timer
)->contents
;
3039 EMACS_SET_SECS (idle_timer_time
,
3040 (XINT (vector
[1]) << 16) | (XINT (vector
[2])));
3041 EMACS_SET_USECS (idle_timer_time
, XINT (vector
[3]));
3042 EMACS_SUB_TIME (idle_timer_difference
, idle_timer_time
, idleness_now
);
3045 /* Decide which timer is the next timer,
3046 and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly.
3047 Also step down the list where we found that timer. */
3049 if (! NILP (timers
) && ! NILP (idle_timers
))
3052 EMACS_SUB_TIME (temp
, timer_difference
, idle_timer_difference
);
3053 if (EMACS_TIME_NEG_P (temp
))
3055 chosen_timer
= timer
;
3056 timers
= XCONS (timers
)->cdr
;
3057 difference
= timer_difference
;
3061 chosen_timer
= idle_timer
;
3062 idle_timers
= XCONS (idle_timers
)->cdr
;
3063 difference
= idle_timer_difference
;
3066 else if (! NILP (timers
))
3068 chosen_timer
= timer
;
3069 timers
= XCONS (timers
)->cdr
;
3070 difference
= timer_difference
;
3074 chosen_timer
= idle_timer
;
3075 idle_timers
= XCONS (idle_timers
)->cdr
;
3076 difference
= idle_timer_difference
;
3078 vector
= XVECTOR (chosen_timer
)->contents
;
3080 /* If timer is rupe, run it if it hasn't been run. */
3081 if (EMACS_TIME_NEG_P (difference
)
3082 || (EMACS_SECS (difference
) == 0
3083 && EMACS_USECS (difference
) == 0))
3085 if (NILP (vector
[0]))
3087 /* Mark the timer as triggered to prevent problems if the lisp
3088 code fails to reschedule it right. */
3091 /* Run the timer or queue a timer event. */
3094 Lisp_Object tem
, event
;
3095 int was_locked
= single_kboard
;
3097 tem
= get_keymap_1 (Vspecial_event_map
, 0, 0);
3098 tem
= get_keyelt (access_keymap (tem
, Qtimer_event
, 0, 0),
3100 event
= Fcons (Qtimer_event
, Fcons (chosen_timer
, Qnil
));
3101 Fcommand_execute (tem
, Qnil
, Fvector (1, &event
), Qt
);
3104 /* Resume allowing input from any kboard, if that was true before. */
3106 any_kboard_state ();
3108 /* Since we have handled the event,
3109 we don't need to tell the caller to wake up and do it. */
3113 /* Generate a timer event so the caller will handle it. */
3114 struct input_event event
;
3116 event
.kind
= timer_event
;
3117 event
.modifiers
= 0;
3118 event
.x
= event
.y
= Qnil
;
3119 event
.timestamp
= triggertime
;
3120 /* Store the timer in the frame slot. */
3121 event
.frame_or_window
3122 = Fcons (Fselected_frame (), chosen_timer
);
3123 kbd_buffer_store_event (&event
);
3125 /* Tell caller to handle this event right away. */
3126 events_generated
= 1;
3127 EMACS_SET_SECS (nexttime
, 0);
3128 EMACS_SET_USECS (nexttime
, 0);
3130 /* Don't queue more than one event at once.
3131 When Emacs is ready for another, it will
3132 queue the next one. */
3139 /* When we encounter a timer that is still waiting,
3140 return the amount of time to wait before it is ripe. */
3143 /* But if we generated an event,
3144 tell the caller to handle it now. */
3145 if (events_generated
)
3151 /* No timers are pending in the future. */
3152 /* Return 0 if we generated an event, and -1 if not. */
3157 /* Caches for modify_event_symbol. */
3158 static Lisp_Object accent_key_syms
;
3159 static Lisp_Object func_key_syms
;
3160 static Lisp_Object mouse_syms
;
3162 /* This is a list of keysym codes for special "accent" characters.
3163 It parallels lispy_accent_keys. */
3165 static int lispy_accent_codes
[] =
3167 #ifdef XK_dead_circumflex
3172 #ifdef XK_dead_grave
3177 #ifdef XK_dead_tilde
3182 #ifdef XK_dead_diaeresis
3187 #ifdef XK_dead_macron
3192 #ifdef XK_dead_degree
3197 #ifdef XK_dead_acute
3202 #ifdef XK_dead_cedilla
3207 #ifdef XK_dead_breve
3212 #ifdef XK_dead_ogonek
3217 #ifdef XK_dead_caron
3222 #ifdef XK_dead_doubleacute
3223 XK_dead_doubleacute
,
3227 #ifdef XK_dead_abovedot
3234 /* This is a list of Lisp names for special "accent" characters.
3235 It parallels lispy_accent_codes. */
3237 static char *lispy_accent_keys
[] =
3255 #define FUNCTION_KEY_OFFSET 0x0
3257 char *lispy_function_keys
[] =
3261 0, /* VK_LBUTTON 0x01 */
3262 0, /* VK_RBUTTON 0x02 */
3263 "cancel", /* VK_CANCEL 0x03 */
3264 0, /* VK_MBUTTON 0x04 */
3266 0, 0, 0, /* 0x05 .. 0x07 */
3268 "backspace", /* VK_BACK 0x08 */
3269 "tab", /* VK_TAB 0x09 */
3271 0, 0, /* 0x0A .. 0x0B */
3273 "clear", /* VK_CLEAR 0x0C */
3274 "return", /* VK_RETURN 0x0D */
3276 0, 0, /* 0x0E .. 0x0F */
3278 "shift", /* VK_SHIFT 0x10 */
3279 "control", /* VK_CONTROL 0x11 */
3280 "menu", /* VK_MENU 0x12 */
3281 "pause", /* VK_PAUSE 0x13 */
3282 "capital", /* VK_CAPITAL 0x14 */
3284 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */
3286 0, /* VK_ESCAPE 0x1B */
3288 0, 0, 0, 0, /* 0x1C .. 0x1F */
3290 0, /* VK_SPACE 0x20 */
3291 "prior", /* VK_PRIOR 0x21 */
3292 "next", /* VK_NEXT 0x22 */
3293 "end", /* VK_END 0x23 */
3294 "home", /* VK_HOME 0x24 */
3295 "left", /* VK_LEFT 0x25 */
3296 "up", /* VK_UP 0x26 */
3297 "right", /* VK_RIGHT 0x27 */
3298 "down", /* VK_DOWN 0x28 */
3299 "select", /* VK_SELECT 0x29 */
3300 "print", /* VK_PRINT 0x2A */
3301 "execute", /* VK_EXECUTE 0x2B */
3302 "snapshot", /* VK_SNAPSHOT 0x2C */
3303 "insert", /* VK_INSERT 0x2D */
3304 "delete", /* VK_DELETE 0x2E */
3305 "help", /* VK_HELP 0x2F */
3307 /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
3309 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3311 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */
3313 /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
3315 0, 0, 0, 0, 0, 0, 0, 0, 0,
3316 0, 0, 0, 0, 0, 0, 0, 0, 0,
3317 0, 0, 0, 0, 0, 0, 0, 0,
3319 "lwindow", /* VK_LWIN 0x5B */
3320 "rwindow", /* VK_RWIN 0x5C */
3321 "apps", /* VK_APPS 0x5D */
3323 0, 0, /* 0x5E .. 0x5F */
3325 "kp-0", /* VK_NUMPAD0 0x60 */
3326 "kp-1", /* VK_NUMPAD1 0x61 */
3327 "kp-2", /* VK_NUMPAD2 0x62 */
3328 "kp-3", /* VK_NUMPAD3 0x63 */
3329 "kp-4", /* VK_NUMPAD4 0x64 */
3330 "kp-5", /* VK_NUMPAD5 0x65 */
3331 "kp-6", /* VK_NUMPAD6 0x66 */
3332 "kp-7", /* VK_NUMPAD7 0x67 */
3333 "kp-8", /* VK_NUMPAD8 0x68 */
3334 "kp-9", /* VK_NUMPAD9 0x69 */
3335 "kp-multiply", /* VK_MULTIPLY 0x6A */
3336 "kp-add", /* VK_ADD 0x6B */
3337 "kp-separator", /* VK_SEPARATOR 0x6C */
3338 "kp-subtract", /* VK_SUBTRACT 0x6D */
3339 "kp-decimal", /* VK_DECIMAL 0x6E */
3340 "kp-divide", /* VK_DIVIDE 0x6F */
3341 "f1", /* VK_F1 0x70 */
3342 "f2", /* VK_F2 0x71 */
3343 "f3", /* VK_F3 0x72 */
3344 "f4", /* VK_F4 0x73 */
3345 "f5", /* VK_F5 0x74 */
3346 "f6", /* VK_F6 0x75 */
3347 "f7", /* VK_F7 0x76 */
3348 "f8", /* VK_F8 0x77 */
3349 "f9", /* VK_F9 0x78 */
3350 "f10", /* VK_F10 0x79 */
3351 "f11", /* VK_F11 0x7A */
3352 "f12", /* VK_F12 0x7B */
3353 "f13", /* VK_F13 0x7C */
3354 "f14", /* VK_F14 0x7D */
3355 "f15", /* VK_F15 0x7E */
3356 "f16", /* VK_F16 0x7F */
3357 "f17", /* VK_F17 0x80 */
3358 "f18", /* VK_F18 0x81 */
3359 "f19", /* VK_F19 0x82 */
3360 "f20", /* VK_F20 0x83 */
3361 "f21", /* VK_F21 0x84 */
3362 "f22", /* VK_F22 0x85 */
3363 "f23", /* VK_F23 0x86 */
3364 "f24", /* VK_F24 0x87 */
3366 0, 0, 0, 0, /* 0x88 .. 0x8B */
3367 0, 0, 0, 0, /* 0x8C .. 0x8F */
3369 "kp-numlock", /* VK_NUMLOCK 0x90 */
3370 "scroll", /* VK_SCROLL 0x91 */
3372 "kp-space", /* VK_NUMPAD_CLEAR 0x92 */
3373 "kp-enter", /* VK_NUMPAD_ENTER 0x93 */
3374 "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */
3375 "kp-next", /* VK_NUMPAD_NEXT 0x95 */
3376 "kp-end", /* VK_NUMPAD_END 0x96 */
3377 "kp-home", /* VK_NUMPAD_HOME 0x97 */
3378 "kp-left", /* VK_NUMPAD_LEFT 0x98 */
3379 "kp-up", /* VK_NUMPAD_UP 0x99 */
3380 "kp-right", /* VK_NUMPAD_RIGHT 0x9A */
3381 "kp-down", /* VK_NUMPAD_DOWN 0x9B */
3382 "kp-insert", /* VK_NUMPAD_INSERT 0x9C */
3383 "kp-delete", /* VK_NUMPAD_DELETE 0x9D */
3385 0, 0, /* 0x9E .. 0x9F */
3388 * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
3389 * Used only as parameters to GetAsyncKeyState() and GetKeyState().
3390 * No other API or message will distinguish left and right keys this way.
3394 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3395 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3396 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3397 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3398 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3404 "attn", /* VK_ATTN 0xF6 */
3405 "crsel", /* VK_CRSEL 0xF7 */
3406 "exsel", /* VK_EXSEL 0xF8 */
3407 "ereof", /* VK_EREOF 0xF9 */
3408 "play", /* VK_PLAY 0xFA */
3409 "zoom", /* VK_ZOOM 0xFB */
3410 "noname", /* VK_NONAME 0xFC */
3411 "pa1", /* VK_PA1 0xFD */
3412 "oem_clear", /* VK_OEM_CLEAR 0xFE */
3417 #define FUNCTION_KEY_OFFSET 0xff00
3419 /* You'll notice that this table is arranged to be conveniently
3420 indexed by X Windows keysym values. */
3421 static char *lispy_function_keys
[] =
3423 /* X Keysym value */
3425 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */
3433 0, 0, 0, /* 0xff10 */
3435 0, 0, 0, 0, 0, 0, 0,
3438 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */
3439 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */
3440 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */
3442 "home", /* 0xff50 */ /* IsCursorKey */
3453 "select", /* 0xff60 */ /* IsMiscFunctionKey */
3464 "break", /* 0xff6b */
3466 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0,
3468 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */
3469 "kp-space", /* 0xff80 */ /* IsKeypadKey */
3470 0, 0, 0, 0, 0, 0, 0, 0,
3471 "kp-tab", /* 0xff89 */
3473 "kp-enter", /* 0xff8d */
3475 "kp-f1", /* 0xff91 */
3479 "kp-home", /* 0xff95 */
3484 "kp-prior", /* kp-page-up */
3485 "kp-next", /* kp-page-down */
3491 0, 0, 0, 0, 0, 0, 0, 0, 0,
3492 "kp-multiply", /* 0xffaa */
3497 "kp-divide", /* 0xffaf */
3498 "kp-0", /* 0xffb0 */
3499 "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9",
3502 "kp-equal", /* 0xffbd */
3503 "f1", /* 0xffbe */ /* IsFunctionKey */
3505 "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */
3506 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18",
3507 "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */
3508 "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34",
3509 "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */
3510 0, 0, 0, 0, 0, 0, 0, 0,
3511 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */
3512 0, 0, 0, 0, 0, 0, 0, "delete"
3515 #endif /* HAVE_NTGUI */
3517 static char *lispy_mouse_names
[] =
3519 "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5"
3522 /* Scroll bar parts. */
3523 Lisp_Object Qabove_handle
, Qhandle
, Qbelow_handle
;
3525 /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */
3526 Lisp_Object
*scroll_bar_parts
[] = {
3527 &Qabove_handle
, &Qhandle
, &Qbelow_handle
3531 /* A vector, indexed by button number, giving the down-going location
3532 of currently depressed buttons, both scroll bar and non-scroll bar.
3534 The elements have the form
3535 (BUTTON-NUMBER MODIFIER-MASK . REST)
3536 where REST is the cdr of a position as it would be reported in the event.
3538 The make_lispy_event function stores positions here to tell the
3539 difference between click and drag events, and to store the starting
3540 location to be included in drag events. */
3542 static Lisp_Object button_down_location
;
3544 /* Information about the most recent up-going button event: Which
3545 button, what location, and what time. */
3547 static int last_mouse_button
;
3548 static int last_mouse_x
;
3549 static int last_mouse_y
;
3550 static unsigned long button_down_time
;
3552 /* The maximum time between clicks to make a double-click,
3553 or Qnil to disable double-click detection,
3554 or Qt for no time limit. */
3555 Lisp_Object Vdouble_click_time
;
3557 /* The number of clicks in this multiple-click. */
3559 int double_click_count
;
3561 /* Given a struct input_event, build the lisp event which represents
3562 it. If EVENT is 0, build a mouse movement event from the mouse
3563 movement buffer, which should have a movement event in it.
3565 Note that events must be passed to this function in the order they
3566 are received; this function stores the location of button presses
3567 in order to build drag events when the button is released. */
3570 make_lispy_event (event
)
3571 struct input_event
*event
;
3575 switch (SWITCH_ENUM_CAST (event
->kind
))
3577 /* A simple keystroke. */
3578 case ascii_keystroke
:
3580 Lisp_Object lispy_c
;
3581 int c
= event
->code
& 0377;
3582 /* Turn ASCII characters into control characters
3584 if (event
->modifiers
& ctrl_modifier
)
3585 c
= make_ctrl_char (c
);
3587 /* Add in the other modifier bits. We took care of ctrl_modifier
3588 just above, and the shift key was taken care of by the X code,
3589 and applied to control characters by make_ctrl_char. */
3590 c
|= (event
->modifiers
3591 & (meta_modifier
| alt_modifier
3592 | hyper_modifier
| super_modifier
));
3593 button_down_time
= 0;
3594 XSETFASTINT (lispy_c
, c
);
3598 /* A function key. The symbol may need to have modifier prefixes
3600 case non_ascii_keystroke
:
3601 button_down_time
= 0;
3603 for (i
= 0; i
< sizeof (lispy_accent_codes
) / sizeof (int); i
++)
3604 if (event
->code
== lispy_accent_codes
[i
])
3605 return modify_event_symbol (i
,
3607 Qfunction_key
, Qnil
,
3608 lispy_accent_keys
, &accent_key_syms
,
3609 (sizeof (lispy_accent_keys
)
3610 / sizeof (lispy_accent_keys
[0])));
3612 /* Handle system-specific keysyms. */
3613 if (event
->code
& (1 << 28))
3615 /* We need to use an alist rather than a vector as the cache
3616 since we can't make a vector long enuf. */
3617 if (NILP (current_kboard
->system_key_syms
))
3618 current_kboard
->system_key_syms
= Fcons (Qnil
, Qnil
);
3619 return modify_event_symbol (event
->code
,
3622 current_kboard
->Vsystem_key_alist
,
3623 0, ¤t_kboard
->system_key_syms
,
3627 return modify_event_symbol (event
->code
- FUNCTION_KEY_OFFSET
,
3629 Qfunction_key
, Qnil
,
3630 lispy_function_keys
, &func_key_syms
,
3631 (sizeof (lispy_function_keys
)
3632 / sizeof (lispy_function_keys
[0])));
3636 return Fcons (Qtimer_event
, Fcons (Fcdr (event
->frame_or_window
), Qnil
));
3639 /* A mouse click. Figure out where it is, decide whether it's
3640 a press, click or drag, and build the appropriate structure. */
3642 case scroll_bar_click
:
3644 int button
= event
->code
;
3646 Lisp_Object position
;
3647 Lisp_Object
*start_pos_ptr
;
3648 Lisp_Object start_pos
;
3650 if (button
< 0 || button
>= NUM_MOUSE_BUTTONS
)
3653 /* Build the position as appropriate for this mouse click. */
3654 if (event
->kind
== mouse_click
)
3657 FRAME_PTR f
= XFRAME (event
->frame_or_window
);
3662 /* Ignore mouse events that were made on frame that
3663 have been deleted. */
3664 if (! FRAME_LIVE_P (f
))
3667 pixel_to_glyph_coords (f
, XINT (event
->x
), XINT (event
->y
),
3668 &column
, &row
, NULL
, 1);
3670 #ifndef USE_X_TOOLKIT
3671 /* In the non-toolkit version, clicks on the menu bar
3672 are ordinary button events in the event buffer.
3673 Distinguish them, and invoke the menu.
3675 (In the toolkit version, the toolkit handles the menu bar
3676 and Emacs doesn't know about it until after the user
3677 makes a selection.) */
3678 if (row
>= 0 && row
< FRAME_MENU_BAR_LINES (f
)
3679 && (event
->modifiers
& down_modifier
))
3681 Lisp_Object items
, item
;
3686 /* Activate the menu bar on the down event. If the
3687 up event comes in before the menu code can deal with it,
3689 if (! (event
->modifiers
& down_modifier
))
3694 items
= FRAME_MENU_BAR_ITEMS (f
);
3695 for (i
= 0; i
< XVECTOR (items
)->size
; i
+= 3)
3697 Lisp_Object pos
, string
;
3698 string
= XVECTOR (items
)->contents
[i
+ 1];
3699 pos
= XVECTOR (items
)->contents
[i
+ 2];
3702 if (column
>= XINT (pos
)
3703 && column
< XINT (pos
) + XSTRING (string
)->size
)
3705 item
= XVECTOR (items
)->contents
[i
];
3711 = Fcons (event
->frame_or_window
,
3713 Fcons (Fcons (event
->x
, event
->y
),
3714 Fcons (make_number (event
->timestamp
),
3717 return Fcons (item
, Fcons (position
, Qnil
));
3719 #endif /* not USE_X_TOOLKIT */
3721 window
= window_from_coordinates (f
, column
, row
, &part
);
3723 if (!WINDOWP (window
))
3725 window
= event
->frame_or_window
;
3730 int pixcolumn
, pixrow
;
3731 column
-= XINT (XWINDOW (window
)->left
);
3732 row
-= XINT (XWINDOW (window
)->top
);
3733 glyph_to_pixel_coords (f
, column
, row
, &pixcolumn
, &pixrow
);
3734 XSETINT (event
->x
, pixcolumn
);
3735 XSETINT (event
->y
, pixrow
);
3740 posn
= Qvertical_line
;
3743 buffer_posn_from_coords (XWINDOW (window
),
3750 Fcons (Fcons (event
->x
, event
->y
),
3751 Fcons (make_number (event
->timestamp
),
3757 Lisp_Object portion_whole
;
3760 window
= event
->frame_or_window
;
3761 portion_whole
= Fcons (event
->x
, event
->y
);
3762 part
= *scroll_bar_parts
[(int) event
->part
];
3766 Fcons (Qvertical_scroll_bar
,
3767 Fcons (portion_whole
,
3768 Fcons (make_number (event
->timestamp
),
3769 Fcons (part
, Qnil
)))));
3772 start_pos_ptr
= &XVECTOR (button_down_location
)->contents
[button
];
3774 start_pos
= *start_pos_ptr
;
3775 *start_pos_ptr
= Qnil
;
3777 is_double
= (button
== last_mouse_button
3778 && XINT (event
->x
) == last_mouse_x
3779 && XINT (event
->y
) == last_mouse_y
3780 && button_down_time
!= 0
3781 && (EQ (Vdouble_click_time
, Qt
)
3782 || (INTEGERP (Vdouble_click_time
)
3783 && ((int)(event
->timestamp
- button_down_time
)
3784 < XINT (Vdouble_click_time
)))));
3785 last_mouse_button
= button
;
3786 last_mouse_x
= XINT (event
->x
);
3787 last_mouse_y
= XINT (event
->y
);
3789 /* If this is a button press, squirrel away the location, so
3790 we can decide later whether it was a click or a drag. */
3791 if (event
->modifiers
& down_modifier
)
3795 double_click_count
++;
3796 event
->modifiers
|= ((double_click_count
> 2)
3801 double_click_count
= 1;
3802 button_down_time
= event
->timestamp
;
3803 *start_pos_ptr
= Fcopy_alist (position
);
3806 /* Now we're releasing a button - check the co-ordinates to
3807 see if this was a click or a drag. */
3808 else if (event
->modifiers
& up_modifier
)
3810 /* If we did not see a down before this up,
3811 ignore the up. Probably this happened because
3812 the down event chose a menu item.
3813 It would be an annoyance to treat the release
3814 of the button that chose the menu item
3815 as a separate event. */
3817 if (!CONSP (start_pos
))
3820 event
->modifiers
&= ~up_modifier
;
3821 #if 0 /* Formerly we treated an up with no down as a click event. */
3822 if (!CONSP (start_pos
))
3823 event
->modifiers
|= click_modifier
;
3827 /* The third element of every position should be the (x,y)
3831 down
= Fnth (make_number (2), start_pos
);
3832 if (EQ (event
->x
, XCONS (down
)->car
)
3833 && EQ (event
->y
, XCONS (down
)->cdr
))
3835 event
->modifiers
|= click_modifier
;
3839 button_down_time
= 0;
3840 event
->modifiers
|= drag_modifier
;
3842 /* Don't check is_double; treat this as multiple
3843 if the down-event was multiple. */
3844 if (double_click_count
> 1)
3845 event
->modifiers
|= ((double_click_count
> 2)
3851 /* Every mouse event should either have the down_modifier or
3852 the up_modifier set. */
3856 /* Get the symbol we should use for the mouse click. */
3859 head
= modify_event_symbol (button
,
3862 lispy_mouse_names
, &mouse_syms
,
3863 (sizeof (lispy_mouse_names
)
3864 / sizeof (lispy_mouse_names
[0])));
3865 if (event
->modifiers
& drag_modifier
)
3870 else if (event
->modifiers
& (double_modifier
| triple_modifier
))
3873 Fcons (make_number (double_click_count
),
3881 #endif /* HAVE_MOUSE */
3883 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI)
3884 case menu_bar_event
:
3885 /* The event value is in the cdr of the frame_or_window slot. */
3886 if (!CONSP (event
->frame_or_window
))
3888 return XCONS (event
->frame_or_window
)->cdr
;
3891 /* The 'kind' field of the event is something we don't recognize. */
3900 make_lispy_movement (frame
, bar_window
, part
, x
, y
, time
)
3902 Lisp_Object bar_window
;
3903 enum scroll_bar_part part
;
3908 /* Is it a scroll bar movement? */
3909 if (frame
&& ! NILP (bar_window
))
3911 Lisp_Object part_sym
;
3913 part_sym
= *scroll_bar_parts
[(int) part
];
3914 return Fcons (Qscroll_bar_movement
,
3915 (Fcons (Fcons (bar_window
,
3916 Fcons (Qvertical_scroll_bar
,
3917 Fcons (Fcons (x
, y
),
3918 Fcons (make_number (time
),
3924 /* Or is it an ordinary mouse movement? */
3926 #endif /* MULTI_FRAME */
3939 /* It's in a frame; which window on that frame? */
3940 pixel_to_glyph_coords (frame
, XINT (x
), XINT (y
), &column
, &row
,
3942 window
= window_from_coordinates (frame
, column
, row
, &area
);
3947 if (WINDOWP (window
))
3949 int pixcolumn
, pixrow
;
3950 column
-= XINT (XWINDOW (window
)->left
);
3951 row
-= XINT (XWINDOW (window
)->top
);
3952 glyph_to_pixel_coords (frame
, column
, row
, &pixcolumn
, &pixrow
);
3953 XSETINT (x
, pixcolumn
);
3954 XSETINT (y
, pixrow
);
3959 posn
= Qvertical_line
;
3962 buffer_posn_from_coords (XWINDOW (window
), column
, row
));
3965 else if (frame
!= 0)
3967 XSETFRAME (window
, frame
);
3979 return Fcons (Qmouse_movement
,
3980 Fcons (Fcons (window
,
3982 Fcons (Fcons (x
, y
),
3983 Fcons (make_number (time
),
3989 #endif /* HAVE_MOUSE */
3991 /* Construct a switch frame event. */
3993 make_lispy_switch_frame (frame
)
3996 return Fcons (Qswitch_frame
, Fcons (frame
, Qnil
));
3999 /* Manipulating modifiers. */
4001 /* Parse the name of SYMBOL, and return the set of modifiers it contains.
4003 If MODIFIER_END is non-zero, set *MODIFIER_END to the position in
4004 SYMBOL's name of the end of the modifiers; the string from this
4005 position is the unmodified symbol name.
4007 This doesn't use any caches. */
4010 parse_modifiers_uncached (symbol
, modifier_end
)
4014 struct Lisp_String
*name
;
4018 CHECK_SYMBOL (symbol
, 1);
4021 name
= XSYMBOL (symbol
)->name
;
4023 for (i
= 0; i
+2 <= name
->size
; )
4025 int this_mod_end
= 0;
4028 /* See if the name continues with a modifier word.
4029 Check that the word appears, but don't check what follows it.
4030 Set this_mod and this_mod_end to record what we find. */
4032 switch (name
->data
[i
])
4034 #define SINGLE_LETTER_MOD(BIT) \
4035 (this_mod_end = i + 1, this_mod = BIT)
4038 SINGLE_LETTER_MOD (alt_modifier
);
4042 SINGLE_LETTER_MOD (ctrl_modifier
);
4046 SINGLE_LETTER_MOD (hyper_modifier
);
4050 SINGLE_LETTER_MOD (meta_modifier
);
4054 SINGLE_LETTER_MOD (shift_modifier
);
4058 SINGLE_LETTER_MOD (super_modifier
);
4061 #undef SINGLE_LETTER_MOD
4064 /* If we found no modifier, stop looking for them. */
4065 if (this_mod_end
== 0)
4068 /* Check there is a dash after the modifier, so that it
4069 really is a modifier. */
4070 if (this_mod_end
>= name
->size
|| name
->data
[this_mod_end
] != '-')
4073 /* This modifier is real; look for another. */
4074 modifiers
|= this_mod
;
4075 i
= this_mod_end
+ 1;
4078 /* Should we include the `click' modifier? */
4079 if (! (modifiers
& (down_modifier
| drag_modifier
4080 | double_modifier
| triple_modifier
))
4081 && i
+ 7 == name
->size
4082 && strncmp (name
->data
+ i
, "mouse-", 6) == 0
4083 && ('0' <= name
->data
[i
+ 6] && name
->data
[i
+ 6] <= '9'))
4084 modifiers
|= click_modifier
;
4092 /* Return a symbol whose name is the modifier prefixes for MODIFIERS
4093 prepended to the string BASE[0..BASE_LEN-1].
4094 This doesn't use any caches. */
4096 apply_modifiers_uncached (modifiers
, base
, base_len
)
4101 /* Since BASE could contain nulls, we can't use intern here; we have
4102 to use Fintern, which expects a genuine Lisp_String, and keeps a
4105 (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-"));
4111 /* Only the event queue may use the `up' modifier; it should always
4112 be turned into a click or drag event before presented to lisp code. */
4113 if (modifiers
& up_modifier
)
4116 if (modifiers
& alt_modifier
) { *p
++ = 'A'; *p
++ = '-'; }
4117 if (modifiers
& ctrl_modifier
) { *p
++ = 'C'; *p
++ = '-'; }
4118 if (modifiers
& hyper_modifier
) { *p
++ = 'H'; *p
++ = '-'; }
4119 if (modifiers
& meta_modifier
) { *p
++ = 'M'; *p
++ = '-'; }
4120 if (modifiers
& shift_modifier
) { *p
++ = 'S'; *p
++ = '-'; }
4121 if (modifiers
& super_modifier
) { *p
++ = 's'; *p
++ = '-'; }
4122 if (modifiers
& double_modifier
) { strcpy (p
, "double-"); p
+= 7; }
4123 if (modifiers
& triple_modifier
) { strcpy (p
, "triple-"); p
+= 7; }
4124 if (modifiers
& down_modifier
) { strcpy (p
, "down-"); p
+= 5; }
4125 if (modifiers
& drag_modifier
) { strcpy (p
, "drag-"); p
+= 5; }
4126 /* The click modifier is denoted by the absence of other modifiers. */
4130 mod_len
= p
- new_mods
;
4134 Lisp_Object new_name
;
4136 new_name
= make_uninit_string (mod_len
+ base_len
);
4137 bcopy (new_mods
, XSTRING (new_name
)->data
, mod_len
);
4138 bcopy (base
, XSTRING (new_name
)->data
+ mod_len
, base_len
);
4140 return Fintern (new_name
, Qnil
);
4145 static char *modifier_names
[] =
4147 "up", "down", "drag", "click", "double", "triple", 0, 0,
4148 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
4149 0, 0, "alt", "super", "hyper", "shift", "control", "meta"
4151 #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0]))
4153 static Lisp_Object modifier_symbols
;
4155 /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */
4157 lispy_modifier_list (modifiers
)
4160 Lisp_Object modifier_list
;
4163 modifier_list
= Qnil
;
4164 for (i
= 0; (1<<i
) <= modifiers
&& i
< NUM_MOD_NAMES
; i
++)
4165 if (modifiers
& (1<<i
))
4166 modifier_list
= Fcons (XVECTOR (modifier_symbols
)->contents
[i
],
4169 return modifier_list
;
4173 /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK),
4174 where UNMODIFIED is the unmodified form of SYMBOL,
4175 MASK is the set of modifiers present in SYMBOL's name.
4176 This is similar to parse_modifiers_uncached, but uses the cache in
4177 SYMBOL's Qevent_symbol_element_mask property, and maintains the
4178 Qevent_symbol_elements property. */
4181 parse_modifiers (symbol
)
4184 Lisp_Object elements
;
4186 elements
= Fget (symbol
, Qevent_symbol_element_mask
);
4187 if (CONSP (elements
))
4192 int modifiers
= parse_modifiers_uncached (symbol
, &end
);
4193 Lisp_Object unmodified
;
4196 unmodified
= Fintern (make_string (XSYMBOL (symbol
)->name
->data
+ end
,
4197 XSYMBOL (symbol
)->name
->size
- end
),
4200 if (modifiers
& ~(((EMACS_INT
)1 << VALBITS
) - 1))
4202 XSETFASTINT (mask
, modifiers
);
4203 elements
= Fcons (unmodified
, Fcons (mask
, Qnil
));
4205 /* Cache the parsing results on SYMBOL. */
4206 Fput (symbol
, Qevent_symbol_element_mask
,
4208 Fput (symbol
, Qevent_symbol_elements
,
4209 Fcons (unmodified
, lispy_modifier_list (modifiers
)));
4211 /* Since we know that SYMBOL is modifiers applied to unmodified,
4212 it would be nice to put that in unmodified's cache.
4213 But we can't, since we're not sure that parse_modifiers is
4220 /* Apply the modifiers MODIFIERS to the symbol BASE.
4221 BASE must be unmodified.
4223 This is like apply_modifiers_uncached, but uses BASE's
4224 Qmodifier_cache property, if present. It also builds
4225 Qevent_symbol_elements properties, since it has that info anyway.
4227 apply_modifiers copies the value of BASE's Qevent_kind property to
4228 the modified symbol. */
4230 apply_modifiers (modifiers
, base
)
4234 Lisp_Object cache
, index
, entry
, new_symbol
;
4236 /* Mask out upper bits. We don't know where this value's been. */
4237 modifiers
&= ((EMACS_INT
)1 << VALBITS
) - 1;
4239 /* The click modifier never figures into cache indices. */
4240 cache
= Fget (base
, Qmodifier_cache
);
4241 XSETFASTINT (index
, (modifiers
& ~click_modifier
));
4242 entry
= assq_no_quit (index
, cache
);
4245 new_symbol
= XCONS (entry
)->cdr
;
4248 /* We have to create the symbol ourselves. */
4249 new_symbol
= apply_modifiers_uncached (modifiers
,
4250 XSYMBOL (base
)->name
->data
,
4251 XSYMBOL (base
)->name
->size
);
4253 /* Add the new symbol to the base's cache. */
4254 entry
= Fcons (index
, new_symbol
);
4255 Fput (base
, Qmodifier_cache
, Fcons (entry
, cache
));
4257 /* We have the parsing info now for free, so add it to the caches. */
4258 XSETFASTINT (index
, modifiers
);
4259 Fput (new_symbol
, Qevent_symbol_element_mask
,
4260 Fcons (base
, Fcons (index
, Qnil
)));
4261 Fput (new_symbol
, Qevent_symbol_elements
,
4262 Fcons (base
, lispy_modifier_list (modifiers
)));
4265 /* Make sure this symbol is of the same kind as BASE.
4267 You'd think we could just set this once and for all when we
4268 intern the symbol above, but reorder_modifiers may call us when
4269 BASE's property isn't set right; we can't assume that just
4270 because it has a Qmodifier_cache property it must have its
4271 Qevent_kind set right as well. */
4272 if (NILP (Fget (new_symbol
, Qevent_kind
)))
4276 kind
= Fget (base
, Qevent_kind
);
4278 Fput (new_symbol
, Qevent_kind
, kind
);
4285 /* Given a symbol whose name begins with modifiers ("C-", "M-", etc),
4286 return a symbol with the modifiers placed in the canonical order.
4287 Canonical order is alphabetical, except for down and drag, which
4288 always come last. The 'click' modifier is never written out.
4290 Fdefine_key calls this to make sure that (for example) C-M-foo
4291 and M-C-foo end up being equivalent in the keymap. */
4294 reorder_modifiers (symbol
)
4297 /* It's hopefully okay to write the code this way, since everything
4298 will soon be in caches, and no consing will be done at all. */
4301 parsed
= parse_modifiers (symbol
);
4302 return apply_modifiers ((int) XINT (XCONS (XCONS (parsed
)->cdr
)->car
),
4303 XCONS (parsed
)->car
);
4307 /* For handling events, we often want to produce a symbol whose name
4308 is a series of modifier key prefixes ("M-", "C-", etcetera) attached
4309 to some base, like the name of a function key or mouse button.
4310 modify_event_symbol produces symbols of this sort.
4312 NAME_TABLE should point to an array of strings, such that NAME_TABLE[i]
4313 is the name of the i'th symbol. TABLE_SIZE is the number of elements
4316 Alternatively, NAME_ALIST is an alist mapping codes into symbol names.
4317 NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used.
4319 SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will
4320 persist between calls to modify_event_symbol that it can use to
4321 store a cache of the symbols it's generated for this NAME_TABLE
4322 before. The object stored there may be a vector or an alist.
4324 SYMBOL_NUM is the number of the base name we want from NAME_TABLE.
4326 MODIFIERS is a set of modifier bits (as given in struct input_events)
4327 whose prefixes should be applied to the symbol name.
4329 SYMBOL_KIND is the value to be placed in the event_kind property of
4330 the returned symbol.
4332 The symbols we create are supposed to have an
4333 `event-symbol-elements' property, which lists the modifiers present
4334 in the symbol's name. */
4337 modify_event_symbol (symbol_num
, modifiers
, symbol_kind
, name_alist
,
4338 name_table
, symbol_table
, table_size
)
4341 Lisp_Object symbol_kind
;
4342 Lisp_Object name_alist
;
4344 Lisp_Object
*symbol_table
;
4345 unsigned int table_size
;
4348 Lisp_Object symbol_int
;
4350 /* Get rid of the "vendor-specific" bit here. */
4351 XSETINT (symbol_int
, symbol_num
& 0xffffff);
4353 /* Is this a request for a valid symbol? */
4354 if (symbol_num
< 0 || symbol_num
>= table_size
)
4357 if (CONSP (*symbol_table
))
4358 value
= Fcdr (assq_no_quit (symbol_int
, *symbol_table
));
4360 /* If *symbol_table doesn't seem to be initialized properly, fix that.
4361 *symbol_table should be a lisp vector TABLE_SIZE elements long,
4362 where the Nth element is the symbol for NAME_TABLE[N], or nil if
4363 we've never used that symbol before. */
4366 if (! VECTORP (*symbol_table
)
4367 || XVECTOR (*symbol_table
)->size
!= table_size
)
4371 XSETFASTINT (size
, table_size
);
4372 *symbol_table
= Fmake_vector (size
, Qnil
);
4375 value
= XVECTOR (*symbol_table
)->contents
[symbol_num
];
4378 /* Have we already used this symbol before? */
4381 /* No; let's create it. */
4382 if (!NILP (name_alist
))
4383 value
= Fcdr_safe (Fassq (symbol_int
, name_alist
));
4384 else if (name_table
[symbol_num
])
4385 value
= intern (name_table
[symbol_num
]);
4387 #ifdef HAVE_WINDOW_SYSTEM
4390 char *name
= x_get_keysym_name (symbol_num
);
4392 value
= intern (name
);
4399 sprintf (buf
, "key-%d", symbol_num
);
4400 value
= intern (buf
);
4403 if (CONSP (*symbol_table
))
4404 *symbol_table
= Fcons (value
, *symbol_table
);
4406 XVECTOR (*symbol_table
)->contents
[symbol_num
] = value
;
4408 /* Fill in the cache entries for this symbol; this also
4409 builds the Qevent_symbol_elements property, which the user
4411 apply_modifiers (modifiers
& click_modifier
, value
);
4412 Fput (value
, Qevent_kind
, symbol_kind
);
4415 /* Apply modifiers to that symbol. */
4416 return apply_modifiers (modifiers
, value
);
4419 /* Convert a list that represents an event type,
4420 such as (ctrl meta backspace), into the usual representation of that
4421 event type as a number or a symbol. */
4423 DEFUN ("event-convert-list", Fevent_convert_list
, Sevent_convert_list
, 1, 1, 0,
4424 "Convert the event description list EVENT-DESC to an event type.\n\
4425 EVENT-DESC should contain one base event type (a character or symbol)\n\
4426 and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\
4427 drag, down, double or triple).\n\
4428 The return value is an event type (a character or symbol) which\n\
4429 has the same base event type and all the specified modifiers.")
4431 Lisp_Object event_desc
;
4439 while (CONSP (rest
))
4444 elt
= XCONS (rest
)->car
;
4446 /* Given a symbol, see if it is a modifier name. */
4448 this = parse_solitary_modifier (elt
);
4452 else if (!NILP (base
))
4453 error ("Two bases given in one event");
4457 rest
= XCONS (rest
)->cdr
;
4460 /* Let the symbol A refer to the character A. */
4461 if (SYMBOLP (base
) && XSYMBOL (base
)->name
->size
== 1)
4462 XSETINT (base
, XSYMBOL (base
)->name
->data
[0]);
4464 if (INTEGERP (base
))
4466 /* Turn (shift a) into A. */
4467 if ((modifiers
& shift_modifier
) != 0
4468 && (XINT (base
) >= 'a' && XINT (base
) <= 'z'))
4470 XSETINT (base
, XINT (base
) - ('a' - 'A'));
4471 modifiers
&= ~shift_modifier
;
4474 /* Turn (control a) into C-a. */
4475 if (modifiers
& ctrl_modifier
)
4476 return make_number ((modifiers
& ~ctrl_modifier
)
4477 | make_ctrl_char (XINT (base
)));
4479 return make_number (modifiers
| XINT (base
));
4481 else if (SYMBOLP (base
))
4482 return apply_modifiers (modifiers
, base
);
4484 error ("Invalid base event");
4487 /* Try to recognize SYMBOL as a modifier name.
4488 Return the modifier flag bit, or 0 if not recognized. */
4491 parse_solitary_modifier (symbol
)
4494 struct Lisp_String
*name
= XSYMBOL (symbol
)->name
;
4496 switch (name
->data
[0])
4498 #define SINGLE_LETTER_MOD(BIT) \
4499 if (name->size == 1) \
4502 #define MULTI_LETTER_MOD(BIT, NAME, LEN) \
4503 if (LEN == name->size \
4504 && ! strncmp (name->data, NAME, LEN)) \
4508 SINGLE_LETTER_MOD (alt_modifier
);
4512 MULTI_LETTER_MOD (alt_modifier
, "alt", 3);
4516 SINGLE_LETTER_MOD (ctrl_modifier
);
4520 MULTI_LETTER_MOD (ctrl_modifier
, "ctrl", 4);
4521 MULTI_LETTER_MOD (ctrl_modifier
, "control", 7);
4525 SINGLE_LETTER_MOD (hyper_modifier
);
4529 MULTI_LETTER_MOD (hyper_modifier
, "hyper", 5);
4533 SINGLE_LETTER_MOD (meta_modifier
);
4537 MULTI_LETTER_MOD (meta_modifier
, "meta", 4);
4541 SINGLE_LETTER_MOD (shift_modifier
);
4545 MULTI_LETTER_MOD (shift_modifier
, "shift", 5);
4546 MULTI_LETTER_MOD (super_modifier
, "super", 5);
4547 SINGLE_LETTER_MOD (super_modifier
);
4551 MULTI_LETTER_MOD (drag_modifier
, "drag", 4);
4552 MULTI_LETTER_MOD (down_modifier
, "down", 4);
4553 MULTI_LETTER_MOD (double_modifier
, "double", 6);
4557 MULTI_LETTER_MOD (triple_modifier
, "triple", 6);
4560 #undef SINGLE_LETTER_MOD
4561 #undef MULTI_LETTER_MOD
4567 /* Return 1 if EVENT is a list whose elements are all integers or symbols.
4568 Such a list is not valid as an event,
4569 but it can be a Lucid-style event type list. */
4572 lucid_event_type_list_p (object
)
4577 if (! CONSP (object
))
4580 for (tail
= object
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
4583 elt
= XCONS (tail
)->car
;
4584 if (! (INTEGERP (elt
) || SYMBOLP (elt
)))
4591 /* Store into *addr a value nonzero if terminal input chars are available.
4592 Serves the purpose of ioctl (0, FIONREAD, addr)
4593 but works even if FIONREAD does not exist.
4594 (In fact, this may actually read some input.)
4596 If DO_TIMERS_NOW is nonzero, actually run timer events that are ripe. */
4599 get_input_pending (addr
, do_timers_now
)
4603 /* First of all, have we already counted some input? */
4604 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4606 /* If input is being read as it arrives, and we have none, there is none. */
4607 if (*addr
> 0 || (interrupt_input
&& ! interrupts_deferred
))
4610 /* Try to read some input and see how much we get. */
4612 *addr
= !NILP (Vquit_flag
) || readable_events (do_timers_now
);
4615 /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */
4618 gobble_input (expected
)
4623 if (interrupt_input
)
4626 mask
= sigblockx (SIGIO
);
4627 read_avail_input (expected
);
4631 #ifdef POLL_FOR_INPUT
4632 if (read_socket_hook
&& !interrupt_input
&& poll_suppress_count
== 0)
4635 mask
= sigblockx (SIGALRM
);
4636 read_avail_input (expected
);
4642 read_avail_input (expected
);
4646 /* Put a buffer_switch_event in the buffer
4647 so that read_key_sequence will notice the new current buffer. */
4649 record_asynch_buffer_change ()
4651 struct input_event event
;
4654 event
.kind
= buffer_switch_event
;
4655 event
.frame_or_window
= Qnil
;
4658 /* We don't need a buffer-switch event unless Emacs is waiting for input.
4659 The purpose of the event is to make read_key_sequence look up the
4660 keymaps again. If we aren't in read_key_sequence, we don't need one,
4661 and the event could cause trouble by messing up (input-pending-p). */
4662 tem
= Fwaiting_for_user_input_p ();
4666 /* We never need these events if we have no asynchronous subprocesses. */
4670 /* Make sure no interrupt happens while storing the event. */
4672 if (interrupt_input
)
4675 mask
= sigblockx (SIGIO
);
4676 kbd_buffer_store_event (&event
);
4683 kbd_buffer_store_event (&event
);
4690 /* Read any terminal input already buffered up by the system
4691 into the kbd_buffer, but do not wait.
4693 EXPECTED should be nonzero if the caller knows there is some input.
4695 Except on VMS, all input is read by this function.
4696 If interrupt_input is nonzero, this function MUST be called
4697 only when SIGIO is blocked.
4699 Returns the number of keyboard chars read, or -1 meaning
4700 this is a bad time to try to read input. */
4703 read_avail_input (expected
)
4706 struct input_event buf
[KBD_BUFFER_SIZE
];
4710 if (read_socket_hook
)
4711 /* No need for FIONREAD or fcntl; just say don't wait. */
4712 nread
= (*read_socket_hook
) (input_fd
, buf
, KBD_BUFFER_SIZE
,
4713 expected
, expected
);
4716 /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
4717 the kbd_buffer can really hold. That may prevent loss
4718 of characters on some systems when input is stuffed at us. */
4719 unsigned char cbuf
[KBD_BUFFER_SIZE
- 1];
4722 /* Determine how many characters we should *try* to read. */
4725 #else /* not WINDOWSNT */
4727 n_to_read
= dos_keysns ();
4730 #else /* not MSDOS */
4732 /* Find out how much input is available. */
4733 if (ioctl (input_fd
, FIONREAD
, &n_to_read
) < 0)
4734 /* Formerly simply reported no input, but that sometimes led to
4735 a failure of Emacs to terminate.
4736 SIGHUP seems appropriate if we can't reach the terminal. */
4737 /* ??? Is it really right to send the signal just to this process
4738 rather than to the whole process group?
4739 Perhaps on systems with FIONREAD Emacs is alone in its group. */
4740 kill (getpid (), SIGHUP
);
4743 if (n_to_read
> sizeof cbuf
)
4744 n_to_read
= sizeof cbuf
;
4745 #else /* no FIONREAD */
4746 #if defined (USG) || defined (DGUX)
4747 /* Read some input if available, but don't wait. */
4748 n_to_read
= sizeof cbuf
;
4749 fcntl (input_fd
, F_SETFL
, O_NDELAY
);
4754 #endif /* not MSDOS */
4755 #endif /* not WINDOWSNT */
4757 /* Now read; for one reason or another, this will not block.
4758 NREAD is set to the number of chars read. */
4762 cbuf
[0] = dos_keyread ();
4765 nread
= read (input_fd
, cbuf
, n_to_read
);
4767 #if defined (AIX) && (! defined (aix386) && defined (_BSD))
4768 /* The kernel sometimes fails to deliver SIGHUP for ptys.
4769 This looks incorrect, but it isn't, because _BSD causes
4770 O_NDELAY to be defined in fcntl.h as O_NONBLOCK,
4771 and that causes a value other than 0 when there is no input. */
4777 /* We used to retry the read if it was interrupted.
4778 But this does the wrong thing when O_NDELAY causes
4779 an EAGAIN error. Does anybody know of a situation
4780 where a retry is actually needed? */
4782 nread
< 0 && (errno
== EAGAIN
4796 #if defined (USG) || defined (DGUX)
4797 fcntl (input_fd
, F_SETFL
, 0);
4798 #endif /* USG or DGUX */
4799 #endif /* no FIONREAD */
4800 for (i
= 0; i
< nread
; i
++)
4802 buf
[i
].kind
= ascii_keystroke
;
4803 buf
[i
].modifiers
= 0;
4804 if (meta_key
== 1 && (cbuf
[i
] & 0x80))
4805 buf
[i
].modifiers
= meta_modifier
;
4809 buf
[i
].code
= cbuf
[i
];
4811 XSETFRAME (buf
[i
].frame_or_window
, selected_frame
);
4813 buf
[i
].frame_or_window
= Qnil
;
4818 /* Scan the chars for C-g and store them in kbd_buffer. */
4819 for (i
= 0; i
< nread
; i
++)
4821 kbd_buffer_store_event (&buf
[i
]);
4822 /* Don't look at input that follows a C-g too closely.
4823 This reduces lossage due to autorepeat on C-g. */
4824 if (buf
[i
].kind
== ascii_keystroke
4825 && buf
[i
].code
== quit_char
)
4831 #endif /* not VMS */
4833 #ifdef SIGIO /* for entire page */
4834 /* Note SIGIO has been undef'd if FIONREAD is missing. */
4837 input_available_signal (signo
)
4840 /* Must preserve main program's value of errno. */
4841 int old_errno
= errno
;
4843 extern int select_alarmed
;
4847 /* USG systems forget handlers when they are used;
4848 must reestablish each time */
4849 signal (signo
, input_available_signal
);
4856 if (input_available_clear_time
)
4857 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
4862 nread
= read_avail_input (1);
4863 /* -1 means it's not ok to read the input now.
4864 UNBLOCK_INPUT will read it later; now, avoid infinite loop.
4865 0 means there was no keyboard input available. */
4870 select_alarmed
= 1; /* Force the select emulator back to life */
4881 /* Send ourselves a SIGIO.
4883 This function exists so that the UNBLOCK_INPUT macro in
4884 blockinput.h can have some way to take care of input we put off
4885 dealing with, without assuming that every file which uses
4886 UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */
4888 reinvoke_input_signal ()
4891 kill (getpid (), SIGIO
);
4897 /* Return the prompt-string of a sparse keymap.
4898 This is the first element which is a string.
4899 Return nil if there is none. */
4907 register Lisp_Object tem
;
4916 static void menu_bar_item ();
4917 static void menu_bar_one_keymap ();
4919 /* These variables hold the vector under construction within
4920 menu_bar_items and its subroutines, and the current index
4921 for storing into that vector. */
4922 static Lisp_Object menu_bar_items_vector
;
4923 static int menu_bar_items_index
;
4925 /* Return a vector of menu items for a menu bar, appropriate
4926 to the current buffer. Each item has three elements in the vector:
4929 OLD is an old vector we can optionally reuse, or nil. */
4932 menu_bar_items (old
)
4935 /* The number of keymaps we're scanning right now, and the number of
4936 keymaps we have allocated space for. */
4939 /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
4940 in the current keymaps, or nil where it is not a prefix. */
4943 Lisp_Object def
, tem
, tail
;
4952 struct gcpro gcpro1
;
4954 /* In order to build the menus, we need to call the keymap
4955 accessors. They all call QUIT. But this function is called
4956 during redisplay, during which a quit is fatal. So inhibit
4957 quitting while building the menus.
4958 We do this instead of specbind because (1) errors will clear it anyway
4959 and (2) this avoids risk of specpdl overflow. */
4960 oquit
= Vinhibit_quit
;
4964 menu_bar_items_vector
= old
;
4966 menu_bar_items_vector
= Fmake_vector (make_number (24), Qnil
);
4967 menu_bar_items_index
= 0;
4969 GCPRO1 (menu_bar_items_vector
);
4971 /* Build our list of keymaps.
4972 If we recognize a function key and replace its escape sequence in
4973 keybuf with its symbol, or if the sequence starts with a mouse
4974 click and we need to switch buffers, we jump back here to rebuild
4975 the initial keymaps from the current buffer. */
4979 /* Should overriding-terminal-local-map and overriding-local-map apply? */
4980 if (!NILP (Voverriding_local_map_menu_flag
))
4982 /* Yes, use them (if non-nil) as well as the global map. */
4983 maps
= (Lisp_Object
*) alloca (3 * sizeof (maps
[0]));
4985 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
4986 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
4987 if (!NILP (Voverriding_local_map
))
4988 maps
[nmaps
++] = Voverriding_local_map
;
4992 /* No, so use major and minor mode keymaps. */
4993 nmaps
= current_minor_maps (NULL
, &tmaps
);
4994 maps
= (Lisp_Object
*) alloca ((nmaps
+ 2) * sizeof (maps
[0]));
4995 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
4996 #ifdef USE_TEXT_PROPERTIES
4997 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
4999 maps
[nmaps
++] = current_buffer
->keymap
;
5002 maps
[nmaps
++] = current_global_map
;
5005 /* Look up in each map the dummy prefix key `menu-bar'. */
5009 for (mapno
= nmaps
- 1; mapno
>= 0; mapno
--)
5011 if (! NILP (maps
[mapno
]))
5012 def
= get_keyelt (access_keymap (maps
[mapno
], Qmenu_bar
, 1, 0));
5016 tem
= Fkeymapp (def
);
5018 menu_bar_one_keymap (def
);
5021 /* Move to the end those items that should be at the end. */
5023 for (tail
= Vmenu_bar_final_items
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5026 int end
= menu_bar_items_index
;
5028 for (i
= 0; i
< end
; i
+= 3)
5029 if (EQ (XCONS (tail
)->car
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5031 Lisp_Object tem0
, tem1
, tem2
;
5032 /* Move the item at index I to the end,
5033 shifting all the others forward. */
5034 tem0
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 0];
5035 tem1
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 1];
5036 tem2
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5038 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3],
5039 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5040 (end
- i
- 3) * sizeof (Lisp_Object
));
5041 XVECTOR (menu_bar_items_vector
)->contents
[end
- 3] = tem0
;
5042 XVECTOR (menu_bar_items_vector
)->contents
[end
- 2] = tem1
;
5043 XVECTOR (menu_bar_items_vector
)->contents
[end
- 1] = tem2
;
5048 /* Add nil, nil, nil at the end. */
5049 i
= menu_bar_items_index
;
5050 if (i
+ 3 > XVECTOR (menu_bar_items_vector
)->size
)
5053 int newsize
= 2 * i
;
5054 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5055 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5056 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5057 menu_bar_items_vector
= tem
;
5059 /* Add this item. */
5060 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5061 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5062 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Qnil
;
5063 menu_bar_items_index
= i
;
5065 Vinhibit_quit
= oquit
;
5067 return menu_bar_items_vector
;
5070 /* Scan one map KEYMAP, accumulating any menu items it defines
5071 in menu_bar_items_vector. */
5074 menu_bar_one_keymap (keymap
)
5077 Lisp_Object tail
, item
, key
, binding
, item_string
, table
;
5079 /* Loop over all keymap entries that have menu strings. */
5080 for (tail
= keymap
; CONSP (tail
); tail
= XCONS (tail
)->cdr
)
5082 item
= XCONS (tail
)->car
;
5085 key
= XCONS (item
)->car
;
5086 binding
= XCONS (item
)->cdr
;
5087 if (CONSP (binding
))
5089 item_string
= XCONS (binding
)->car
;
5090 if (STRINGP (item_string
))
5091 menu_bar_item (key
, item_string
, Fcdr (binding
));
5093 else if (EQ (binding
, Qundefined
))
5094 menu_bar_item (key
, Qnil
, binding
);
5096 else if (VECTORP (item
))
5098 /* Loop over the char values represented in the vector. */
5099 int len
= XVECTOR (item
)->size
;
5101 for (c
= 0; c
< len
; c
++)
5103 Lisp_Object character
;
5104 XSETFASTINT (character
, c
);
5105 binding
= XVECTOR (item
)->contents
[c
];
5106 if (CONSP (binding
))
5108 item_string
= XCONS (binding
)->car
;
5109 if (STRINGP (item_string
))
5110 menu_bar_item (key
, item_string
, Fcdr (binding
));
5112 else if (EQ (binding
, Qundefined
))
5113 menu_bar_item (key
, Qnil
, binding
);
5119 /* This is used as the handler when calling internal_condition_case_1. */
5122 menu_bar_item_1 (arg
)
5128 /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF.
5129 If there's already an item for KEY, add this DEF to it. */
5132 menu_bar_item (key
, item_string
, def
)
5133 Lisp_Object key
, item_string
, def
;
5136 Lisp_Object enabled
;
5139 if (EQ (def
, Qundefined
))
5141 /* If a map has an explicit `undefined' as definition,
5142 discard any previously made menu bar item. */
5144 for (i
= 0; i
< menu_bar_items_index
; i
+= 3)
5145 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5147 if (menu_bar_items_index
> i
+ 3)
5148 bcopy (&XVECTOR (menu_bar_items_vector
)->contents
[i
+ 3],
5149 &XVECTOR (menu_bar_items_vector
)->contents
[i
],
5150 (menu_bar_items_index
- i
- 3) * sizeof (Lisp_Object
));
5151 menu_bar_items_index
-= 3;
5155 /* If there's no definition for this key yet,
5156 just ignore `undefined'. */
5160 /* See if this entry is enabled. */
5165 /* No property, or nil, means enable.
5166 Otherwise, enable if value is not nil. */
5167 tem
= Fget (def
, Qmenu_enable
);
5169 /* (condition-case nil (eval tem)
5171 enabled
= internal_condition_case_1 (Feval
, tem
, Qerror
,
5175 /* Ignore this item if it's not enabled. */
5179 /* Find any existing item for this KEY. */
5180 for (i
= 0; i
< menu_bar_items_index
; i
+= 3)
5181 if (EQ (key
, XVECTOR (menu_bar_items_vector
)->contents
[i
]))
5184 /* If we did not find this KEY, add it at the end. */
5185 if (i
== menu_bar_items_index
)
5187 /* If vector is too small, get a bigger one. */
5188 if (i
+ 3 > XVECTOR (menu_bar_items_vector
)->size
)
5191 int newsize
= 2 * i
;
5192 tem
= Fmake_vector (make_number (2 * i
), Qnil
);
5193 bcopy (XVECTOR (menu_bar_items_vector
)->contents
,
5194 XVECTOR (tem
)->contents
, i
* sizeof (Lisp_Object
));
5195 menu_bar_items_vector
= tem
;
5197 /* Add this item. */
5198 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = key
;
5199 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = item_string
;
5200 XVECTOR (menu_bar_items_vector
)->contents
[i
++] = Fcons (def
, Qnil
);
5201 menu_bar_items_index
= i
;
5203 /* We did find an item for this KEY. Add DEF to its list of maps. */
5207 old
= XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2];
5208 XVECTOR (menu_bar_items_vector
)->contents
[i
+ 2] = Fcons (def
, old
);
5212 /* Read a character using menus based on maps in the array MAPS.
5213 NMAPS is the length of MAPS. Return nil if there are no menus in the maps.
5214 Return t if we displayed a menu but the user rejected it.
5216 PREV_EVENT is the previous input event, or nil if we are reading
5217 the first event of a key sequence.
5219 If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1
5220 if we used a mouse menu to read the input, or zero otherwise. If
5221 USED_MOUSE_MENU is null, we don't dereference it.
5223 The prompting is done based on the prompt-string of the map
5224 and the strings associated with various map elements.
5226 This can be done with X menus or with menus put in the minibuf.
5227 These are done in different ways, depending on how the input will be read.
5228 Menus using X are done after auto-saving in read-char, getting the input
5229 event from Fx_popup_menu; menus using the minibuf use read_char recursively
5230 and do auto-saving in the inner call of read_char. */
5233 read_char_x_menu_prompt (nmaps
, maps
, prev_event
, used_mouse_menu
)
5236 Lisp_Object prev_event
;
5237 int *used_mouse_menu
;
5240 register Lisp_Object name
;
5241 Lisp_Object rest
, vector
;
5243 if (used_mouse_menu
)
5244 *used_mouse_menu
= 0;
5246 /* Use local over global Menu maps */
5248 if (! menu_prompting
)
5251 /* Optionally disregard all but the global map. */
5252 if (inhibit_local_menu_bar_menus
)
5254 maps
+= (nmaps
- 1);
5258 /* Get the menu name from the first map that has one (a prompt string). */
5259 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5261 name
= map_prompt (maps
[mapno
]);
5266 /* If we don't have any menus, just read a character normally. */
5271 /* If we got to this point via a mouse click,
5272 use a real menu for mouse selection. */
5273 if (EVENT_HAS_PARAMETERS (prev_event
)
5274 && !EQ (XCONS (prev_event
)->car
, Qmenu_bar
))
5276 /* Display the menu and get the selection. */
5277 Lisp_Object
*realmaps
5278 = (Lisp_Object
*) alloca (nmaps
* sizeof (Lisp_Object
));
5282 /* Use the maps that are not nil. */
5283 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5284 if (!NILP (maps
[mapno
]))
5285 realmaps
[nmaps1
++] = maps
[mapno
];
5287 value
= Fx_popup_menu (prev_event
, Flist (nmaps1
, realmaps
));
5292 /* If we got multiple events, unread all but
5294 There is no way to prevent those unread events
5295 from showing up later in last_nonmenu_event.
5296 So turn symbol and integer events into lists,
5297 to indicate that they came from a mouse menu,
5298 so that when present in last_nonmenu_event
5299 they won't confuse things. */
5300 for (tem
= XCONS (value
)->cdr
; !NILP (tem
);
5301 tem
= XCONS (tem
)->cdr
)
5302 if (SYMBOLP (XCONS (tem
)->car
)
5303 || INTEGERP (XCONS (tem
)->car
))
5305 = Fcons (XCONS (tem
)->car
, Qnil
);
5307 /* If we got more than one event, put all but the first
5308 onto this list to be read later.
5309 Return just the first event now. */
5310 Vunread_command_events
5311 = nconc2 (XCONS (value
)->cdr
, Vunread_command_events
);
5312 value
= XCONS (value
)->car
;
5314 else if (NILP (value
))
5316 if (used_mouse_menu
)
5317 *used_mouse_menu
= 1;
5320 #endif /* HAVE_MENUS */
5324 /* Buffer in use so far for the minibuf prompts for menu keymaps.
5325 We make this bigger when necessary, and never free it. */
5326 static char *read_char_minibuf_menu_text
;
5327 /* Size of that buffer. */
5328 static int read_char_minibuf_menu_width
;
5331 read_char_minibuf_menu_prompt (commandflag
, nmaps
, maps
)
5337 register Lisp_Object name
;
5339 int width
= FRAME_WIDTH (selected_frame
) - 4;
5342 Lisp_Object rest
, vector
;
5345 if (! menu_prompting
)
5348 /* Make sure we have a big enough buffer for the menu text. */
5349 if (read_char_minibuf_menu_text
== 0)
5351 read_char_minibuf_menu_width
= width
+ 4;
5352 read_char_minibuf_menu_text
= (char *) xmalloc (width
+ 4);
5354 else if (width
+ 4 > read_char_minibuf_menu_width
)
5356 read_char_minibuf_menu_width
= width
+ 4;
5357 read_char_minibuf_menu_text
5358 = (char *) xrealloc (read_char_minibuf_menu_text
, width
+ 4);
5360 menu
= read_char_minibuf_menu_text
;
5362 /* Get the menu name from the first map that has one (a prompt string). */
5363 for (mapno
= 0; mapno
< nmaps
; mapno
++)
5365 name
= map_prompt (maps
[mapno
]);
5370 /* If we don't have any menus, just read a character normally. */
5374 /* Prompt string always starts with map's prompt, and a space. */
5375 strcpy (menu
, XSTRING (name
)->data
);
5376 nlength
= XSTRING (name
)->size
;
5377 menu
[nlength
++] = ':';
5378 menu
[nlength
++] = ' ';
5381 /* Start prompting at start of first map. */
5385 /* Present the documented bindings, a line at a time. */
5392 Lisp_Object orig_defn_macro
;
5394 /* Loop over elements of map. */
5399 /* If reached end of map, start at beginning of next map. */
5403 /* At end of last map, wrap around to first map if just starting,
5404 or end this line if already have something on it. */
5408 if (notfirst
|| nobindings
) break;
5413 /* Look at the next element of the map. */
5415 elt
= XVECTOR (vector
)->contents
[idx
];
5417 elt
= Fcar_safe (rest
);
5419 if (idx
< 0 && VECTORP (elt
))
5421 /* If we found a dense table in the keymap,
5422 advanced past it, but start scanning its contents. */
5423 rest
= Fcdr_safe (rest
);
5429 /* An ordinary element. */
5434 s
= Fcar_safe (Fcdr_safe (elt
)); /* alist */
5435 event
= Fcar_safe (elt
);
5439 s
= Fcar_safe (elt
); /* vector */
5440 XSETINT (event
, idx
);
5443 /* Ignore the element if it has no prompt string. */
5444 if (STRINGP (s
) && INTEGERP (event
))
5446 /* 1 if the char to type matches the string. */
5448 Lisp_Object upcased_event
, downcased_event
;
5451 upcased_event
= Fupcase (event
);
5452 downcased_event
= Fdowncase (event
);
5453 char_matches
= (XINT (upcased_event
) == XSTRING (s
)->data
[0]
5454 || XINT (downcased_event
) == XSTRING (s
)->data
[0]);
5456 desc
= Fsingle_key_description (event
);
5458 /* If we have room for the prompt string, add it to this line.
5459 If this is the first on the line, always add it. */
5460 if ((XSTRING (s
)->size
+ i
+ 2
5461 + (char_matches
? 0 : XSTRING (desc
)->size
+ 3))
5467 /* Punctuate between strings. */
5470 strcpy (menu
+ i
, ", ");
5476 /* If the char to type doesn't match the string's
5477 first char, explicitly show what char to type. */
5480 /* Add as much of string as fits. */
5481 thiswidth
= XSTRING (desc
)->size
;
5482 if (thiswidth
+ i
> width
)
5483 thiswidth
= width
- i
;
5484 bcopy (XSTRING (desc
)->data
, menu
+ i
, thiswidth
);
5486 strcpy (menu
+ i
, " = ");
5490 /* Add as much of string as fits. */
5491 thiswidth
= XSTRING (s
)->size
;
5492 if (thiswidth
+ i
> width
)
5493 thiswidth
= width
- i
;
5494 bcopy (XSTRING (s
)->data
, menu
+ i
, thiswidth
);
5500 /* If this element does not fit, end the line now,
5501 and save the element for the next line. */
5502 strcpy (menu
+ i
, "...");
5507 /* Move past this element. */
5508 if (idx
>= 0 && idx
+ 1 >= XVECTOR (vector
)->size
)
5509 /* Handle reaching end of dense table. */
5514 rest
= Fcdr_safe (rest
);
5518 /* Prompt with that and read response. */
5521 /* Make believe its not a keyboard macro in case the help char
5522 is pressed. Help characters are not recorded because menu prompting
5523 is not used on replay.
5525 orig_defn_macro
= current_kboard
->defining_kbd_macro
;
5526 current_kboard
->defining_kbd_macro
= Qnil
;
5528 obj
= read_char (commandflag
, 0, 0, Qnil
, 0);
5529 while (BUFFERP (obj
));
5530 current_kboard
->defining_kbd_macro
= orig_defn_macro
;
5532 if (!INTEGERP (obj
))
5537 if (! EQ (obj
, menu_prompt_more_char
)
5538 && (!INTEGERP (menu_prompt_more_char
)
5539 || ! EQ (obj
, make_number (Ctl (XINT (menu_prompt_more_char
))))))
5541 if (!NILP (current_kboard
->defining_kbd_macro
))
5542 store_kbd_macro_char (obj
);
5545 /* Help char - go round again */
5549 /* Reading key sequences. */
5551 /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings
5552 in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a
5553 keymap, or nil otherwise. Return the index of the first keymap in
5554 which KEY has any binding, or NMAPS if no map has a binding.
5556 If KEY is a meta ASCII character, treat it like meta-prefix-char
5557 followed by the corresponding non-meta character. Keymaps in
5558 CURRENT with non-prefix bindings for meta-prefix-char become nil in
5561 If KEY has no bindings in any of the CURRENT maps, NEXT is left
5564 NEXT may be the same array as CURRENT. */
5567 follow_key (key
, nmaps
, current
, defs
, next
)
5569 Lisp_Object
*current
, *defs
, *next
;
5572 int i
, first_binding
;
5575 /* If KEY is a meta ASCII character, treat it like meta-prefix-char
5576 followed by the corresponding non-meta character.
5577 Put the results into DEFS, since we are going to alter that anyway.
5578 Do not alter CURRENT or NEXT. */
5579 if (INTEGERP (key
) && (XINT (key
) & CHAR_META
))
5581 for (i
= 0; i
< nmaps
; i
++)
5582 if (! NILP (current
[i
]))
5585 def
= get_keyelt (access_keymap (current
[i
],
5586 meta_prefix_char
, 1, 0));
5588 /* Note that since we pass the resulting bindings through
5589 get_keymap_1, non-prefix bindings for meta-prefix-char
5591 defs
[i
] = get_keymap_1 (def
, 0, 1);
5597 XSETINT (key
, XFASTINT (key
) & ~CHAR_META
);
5600 first_binding
= nmaps
;
5601 for (i
= nmaps
- 1; i
>= 0; i
--)
5603 if (! NILP (current
[i
]))
5611 defs
[i
] = get_keyelt (access_keymap (map
, key
, 1, 0));
5612 if (! NILP (defs
[i
]))
5619 /* Given the set of bindings we've found, produce the next set of maps. */
5620 if (first_binding
< nmaps
)
5621 for (i
= 0; i
< nmaps
; i
++)
5622 next
[i
] = NILP (defs
[i
]) ? Qnil
: get_keymap_1 (defs
[i
], 0, 1);
5624 return first_binding
;
5627 /* Read a sequence of keys that ends with a non prefix character,
5628 storing it in KEYBUF, a buffer of size BUFSIZE.
5630 Return the length of the key sequence stored.
5631 Return -1 if the user rejected a command menu.
5633 Echo starting immediately unless `prompt' is 0.
5635 Where a key sequence ends depends on the currently active keymaps.
5636 These include any minor mode keymaps active in the current buffer,
5637 the current buffer's local map, and the global map.
5639 If a key sequence has no other bindings, we check Vfunction_key_map
5640 to see if some trailing subsequence might be the beginning of a
5641 function key's sequence. If so, we try to read the whole function
5642 key, and substitute its symbolic name into the key sequence.
5644 We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and
5645 `double-' events into similar click events, if that would make them
5646 bound. We try to turn `triple-' events first into `double-' events,
5649 If we get a mouse click in a mode line, vertical divider, or other
5650 non-text area, we treat the click as if it were prefixed by the
5651 symbol denoting that area - `mode-line', `vertical-line', or
5654 If the sequence starts with a mouse click, we read the key sequence
5655 with respect to the buffer clicked on, not the current buffer.
5657 If the user switches frames in the midst of a key sequence, we put
5658 off the switch-frame event until later; the next call to
5659 read_char will return it. */
5662 read_key_sequence (keybuf
, bufsize
, prompt
, dont_downcase_last
,
5663 can_return_switch_frame
)
5664 Lisp_Object
*keybuf
;
5667 int dont_downcase_last
;
5668 int can_return_switch_frame
;
5670 int count
= specpdl_ptr
- specpdl
;
5672 /* How many keys there are in the current key sequence. */
5675 /* The length of the echo buffer when we started reading, and
5676 the length of this_command_keys when we started reading. */
5680 /* The number of keymaps we're scanning right now, and the number of
5681 keymaps we have allocated space for. */
5683 int nmaps_allocated
= 0;
5685 /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in
5686 the current keymaps. */
5689 /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1]
5690 in the current keymaps, or nil where it is not a prefix. */
5691 Lisp_Object
*submaps
;
5693 /* The local map to start out with at start of key sequence. */
5694 Lisp_Object orig_local_map
;
5696 /* 1 if we have already considered switching to the local-map property
5697 of the place where a mouse click occurred. */
5698 int localized_local_map
= 0;
5700 /* The index in defs[] of the first keymap that has a binding for
5701 this key sequence. In other words, the lowest i such that
5702 defs[i] is non-nil. */
5705 /* If t < mock_input, then KEYBUF[t] should be read as the next
5708 We use this to recover after recognizing a function key. Once we
5709 realize that a suffix of the current key sequence is actually a
5710 function key's escape sequence, we replace the suffix with the
5711 function key's binding from Vfunction_key_map. Now keybuf
5712 contains a new and different key sequence, so the echo area,
5713 this_command_keys, and the submaps and defs arrays are wrong. In
5714 this situation, we set mock_input to t, set t to 0, and jump to
5715 restart_sequence; the loop will read keys from keybuf up until
5716 mock_input, thus rebuilding the state; and then it will resume
5717 reading characters from the keyboard. */
5720 /* If the sequence is unbound in submaps[], then
5721 keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map,
5722 and fkey_map is its binding.
5724 These might be > t, indicating that all function key scanning
5725 should hold off until t reaches them. We do this when we've just
5726 recognized a function key, to avoid searching for the function
5727 key's again in Vfunction_key_map. */
5728 int fkey_start
= 0, fkey_end
= 0;
5729 Lisp_Object fkey_map
;
5731 /* Likewise, for key_translation_map. */
5732 int keytran_start
= 0, keytran_end
= 0;
5733 Lisp_Object keytran_map
;
5735 /* If we receive a ``switch-frame'' event in the middle of a key sequence,
5736 we put it off for later. While we're reading, we keep the event here. */
5737 Lisp_Object delayed_switch_frame
;
5739 /* See the comment below... */
5740 #if defined (GOBBLE_FIRST_EVENT)
5741 Lisp_Object first_event
;
5744 Lisp_Object original_uppercase
;
5745 int original_uppercase_position
= -1;
5747 /* Gets around Microsoft compiler limitations. */
5750 struct buffer
*starting_buffer
;
5752 /* Nonzero if we seem to have got the beginning of a binding
5753 in function_key_map. */
5754 int function_key_possible
= 0;
5755 int key_translation_possible
= 0;
5757 /* Save the status of key translation before each step,
5758 so that we can restore this after downcasing. */
5759 Lisp_Object prev_fkey_map
;
5760 Lisp_Object prev_fkey_start
;
5761 Lisp_Object prev_fkey_end
;
5763 Lisp_Object prev_keytran_map
;
5764 Lisp_Object prev_keytran_start
;
5765 Lisp_Object prev_keytran_end
;
5769 last_nonmenu_event
= Qnil
;
5771 delayed_switch_frame
= Qnil
;
5772 fkey_map
= Vfunction_key_map
;
5773 keytran_map
= Vkey_translation_map
;
5775 /* If there is no function-key-map, turn off function key scanning. */
5776 if (NILP (Fkeymapp (Vfunction_key_map
)))
5777 fkey_start
= fkey_end
= bufsize
+ 1;
5779 /* If there is no key-translation-map, turn off scanning. */
5780 if (NILP (Fkeymapp (Vkey_translation_map
)))
5781 keytran_start
= keytran_end
= bufsize
+ 1;
5786 echo_prompt (XSTRING (prompt
)->data
);
5787 else if (cursor_in_echo_area
&& echo_keystrokes
)
5788 /* This doesn't put in a dash if the echo buffer is empty, so
5789 you don't always see a dash hanging out in the minibuffer. */
5793 /* Record the initial state of the echo area and this_command_keys;
5794 we will need to restore them if we replay a key sequence. */
5796 echo_start
= echo_length ();
5797 keys_start
= this_command_key_count
;
5799 #if defined (GOBBLE_FIRST_EVENT)
5800 /* This doesn't quite work, because some of the things that read_char
5801 does cannot safely be bypassed. It seems too risky to try to make
5804 /* Read the first char of the sequence specially, before setting
5805 up any keymaps, in case a filter runs and switches buffers on us. */
5806 first_event
= read_char (NILP (prompt
), 0, submaps
, last_nonmenu_event
,
5808 #endif /* GOBBLE_FIRST_EVENT */
5810 orig_local_map
= get_local_map (PT
, current_buffer
);
5812 /* We jump here when the key sequence has been thoroughly changed, and
5813 we need to rescan it starting from the beginning. When we jump here,
5814 keybuf[0..mock_input] holds the sequence we should reread. */
5817 starting_buffer
= current_buffer
;
5818 function_key_possible
= 0;
5819 key_translation_possible
= 0;
5821 /* Build our list of keymaps.
5822 If we recognize a function key and replace its escape sequence in
5823 keybuf with its symbol, or if the sequence starts with a mouse
5824 click and we need to switch buffers, we jump back here to rebuild
5825 the initial keymaps from the current buffer. */
5829 if (!NILP (current_kboard
->Voverriding_terminal_local_map
)
5830 || !NILP (Voverriding_local_map
))
5832 if (3 > nmaps_allocated
)
5834 submaps
= (Lisp_Object
*) alloca (3 * sizeof (submaps
[0]));
5835 defs
= (Lisp_Object
*) alloca (3 * sizeof (defs
[0]));
5836 nmaps_allocated
= 3;
5839 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
5840 submaps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
5841 if (!NILP (Voverriding_local_map
))
5842 submaps
[nmaps
++] = Voverriding_local_map
;
5846 nmaps
= current_minor_maps (0, &maps
);
5847 if (nmaps
+ 2 > nmaps_allocated
)
5849 submaps
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (submaps
[0]));
5850 defs
= (Lisp_Object
*) alloca ((nmaps
+2) * sizeof (defs
[0]));
5851 nmaps_allocated
= nmaps
+ 2;
5853 bcopy (maps
, submaps
, nmaps
* sizeof (submaps
[0]));
5854 #ifdef USE_TEXT_PROPERTIES
5855 submaps
[nmaps
++] = orig_local_map
;
5857 submaps
[nmaps
++] = current_buffer
->keymap
;
5860 submaps
[nmaps
++] = current_global_map
;
5863 /* Find an accurate initial value for first_binding. */
5864 for (first_binding
= 0; first_binding
< nmaps
; first_binding
++)
5865 if (! NILP (submaps
[first_binding
]))
5868 /* Start from the beginning in keybuf. */
5871 /* These are no-ops the first time through, but if we restart, they
5872 revert the echo area and this_command_keys to their original state. */
5873 this_command_key_count
= keys_start
;
5874 if (INTERACTIVE
&& t
< mock_input
)
5875 echo_truncate (echo_start
);
5877 /* If the best binding for the current key sequence is a keymap, or
5878 we may be looking at a function key's escape sequence, keep on
5880 while ((first_binding
< nmaps
&& ! NILP (submaps
[first_binding
]))
5881 || (first_binding
>= nmaps
5883 /* mock input is never part of a function key's sequence. */
5884 && mock_input
<= fkey_start
)
5885 || (first_binding
>= nmaps
5886 && keytran_start
< t
&& key_translation_possible
)
5887 /* Don't return in the middle of a possible function key sequence,
5888 if the only bindings we found were via case conversion.
5889 Thus, if ESC O a has a function-key-map translation
5890 and ESC o has a binding, don't return after ESC O,
5891 so that we can translate ESC O plus the next character. */
5895 int used_mouse_menu
= 0;
5897 /* Where the last real key started. If we need to throw away a
5898 key that has expanded into more than one element of keybuf
5899 (say, a mouse click on the mode line which is being treated
5900 as [mode-line (mouse-...)], then we backtrack to this point
5902 int last_real_key_start
;
5904 /* These variables are analogous to echo_start and keys_start;
5905 while those allow us to restart the entire key sequence,
5906 echo_local_start and keys_local_start allow us to throw away
5908 int echo_local_start
, keys_local_start
, local_first_binding
;
5911 error ("Key sequence too long");
5914 echo_local_start
= echo_length ();
5915 keys_local_start
= this_command_key_count
;
5916 local_first_binding
= first_binding
;
5919 /* These are no-ops, unless we throw away a keystroke below and
5920 jumped back up to replay_key; in that case, these restore the
5921 variables to their original state, allowing us to replay the
5923 if (INTERACTIVE
&& t
< mock_input
)
5924 echo_truncate (echo_local_start
);
5925 this_command_key_count
= keys_local_start
;
5926 first_binding
= local_first_binding
;
5928 /* By default, assume each event is "real". */
5929 last_real_key_start
= t
;
5931 /* Does mock_input indicate that we are re-reading a key sequence? */
5935 add_command_key (key
);
5936 if (echo_keystrokes
)
5940 /* If not, we should actually read a character. */
5943 struct buffer
*buf
= current_buffer
;
5947 KBOARD
*interrupted_kboard
= current_kboard
;
5948 struct frame
*interrupted_frame
= selected_frame
;
5949 if (setjmp (wrong_kboard_jmpbuf
))
5951 if (!NILP (delayed_switch_frame
))
5953 interrupted_kboard
->kbd_queue
5954 = Fcons (delayed_switch_frame
,
5955 interrupted_kboard
->kbd_queue
);
5956 delayed_switch_frame
= Qnil
;
5959 interrupted_kboard
->kbd_queue
5960 = Fcons (keybuf
[--t
], interrupted_kboard
->kbd_queue
);
5962 /* If the side queue is non-empty, ensure it begins with a
5963 switch-frame, so we'll replay it in the right context. */
5964 if (CONSP (interrupted_kboard
->kbd_queue
)
5965 && (key
= XCONS (interrupted_kboard
->kbd_queue
)->car
,
5966 !(EVENT_HAS_PARAMETERS (key
)
5967 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key
)),
5971 XSETFRAME (frame
, interrupted_frame
);
5972 interrupted_kboard
->kbd_queue
5973 = Fcons (make_lispy_switch_frame (frame
),
5974 interrupted_kboard
->kbd_queue
);
5977 orig_local_map
= get_local_map (PT
, current_buffer
);
5978 goto replay_sequence
;
5981 key
= read_char (NILP (prompt
), nmaps
, submaps
, last_nonmenu_event
,
5985 /* read_char returns t when it shows a menu and the user rejects it.
5990 /* read_char returns -1 at the end of a macro.
5991 Emacs 18 handles this by returning immediately with a
5992 zero, so that's what we'll do. */
5993 if (INTEGERP (key
) && XINT (key
) == -1)
5996 /* The Microsoft C compiler can't handle the goto that
6002 /* If the current buffer has been changed from under us, the
6003 keymap may have changed, so replay the sequence. */
6007 orig_local_map
= get_local_map (PT
, current_buffer
);
6008 goto replay_sequence
;
6011 /* If we have a quit that was typed in another frame, and
6012 quit_throw_to_read_char switched buffers,
6013 replay to get the right keymap. */
6014 if (XINT (key
) == quit_char
&& current_buffer
!= starting_buffer
)
6019 orig_local_map
= get_local_map (PT
, current_buffer
);
6020 goto replay_sequence
;
6026 /* Clicks in non-text areas get prefixed by the symbol
6027 in their CHAR-ADDRESS field. For example, a click on
6028 the mode line is prefixed by the symbol `mode-line'.
6030 Furthermore, key sequences beginning with mouse clicks
6031 are read using the keymaps of the buffer clicked on, not
6032 the current buffer. So we may have to switch the buffer
6035 When we turn one event into two events, we must make sure
6036 that neither of the two looks like the original--so that,
6037 if we replay the events, they won't be expanded again.
6038 If not for this, such reexpansion could happen either here
6039 or when user programs play with this-command-keys. */
6040 if (EVENT_HAS_PARAMETERS (key
))
6044 kind
= EVENT_HEAD_KIND (EVENT_HEAD (key
));
6045 if (EQ (kind
, Qmouse_click
))
6047 Lisp_Object window
, posn
;
6049 window
= POSN_WINDOW (EVENT_START (key
));
6050 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6053 /* We're looking at the second event of a
6054 sequence which we expanded before. Set
6055 last_real_key_start appropriately. */
6057 last_real_key_start
= t
- 1;
6060 /* Key sequences beginning with mouse clicks are
6061 read using the keymaps in the buffer clicked on,
6062 not the current buffer. If we're at the
6063 beginning of a key sequence, switch buffers. */
6064 if (last_real_key_start
== 0
6066 && BUFFERP (XWINDOW (window
)->buffer
)
6067 && XBUFFER (XWINDOW (window
)->buffer
) != current_buffer
)
6072 /* Arrange to go back to the original buffer once we're
6073 done reading the key sequence. Note that we can't
6074 use save_excursion_{save,restore} here, because they
6075 save point as well as the current buffer; we don't
6076 want to save point, because redisplay may change it,
6077 to accommodate a Fset_window_start or something. We
6078 don't want to do this at the top of the function,
6079 because we may get input from a subprocess which
6080 wants to change the selected window and stuff (say,
6082 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
6084 set_buffer_internal (XBUFFER (XWINDOW (window
)->buffer
));
6085 orig_local_map
= get_local_map (PT
, current_buffer
);
6086 goto replay_sequence
;
6088 /* For a mouse click, get the local text-property keymap
6089 of the place clicked on, rather than point. */
6090 if (last_real_key_start
== 0 && CONSP (XCONS (key
)->cdr
)
6091 && ! localized_local_map
)
6093 Lisp_Object map_here
, start
, pos
;
6095 localized_local_map
= 1;
6096 start
= EVENT_START (key
);
6097 if (CONSP (start
) && CONSP (XCONS (start
)->cdr
))
6099 pos
= POSN_BUFFER_POSN (start
);
6101 && XINT (pos
) >= BEG
&& XINT (pos
) <= Z
)
6103 map_here
= get_local_map (XINT (pos
), current_buffer
);
6104 if (!EQ (map_here
, orig_local_map
))
6106 orig_local_map
= map_here
;
6110 goto replay_sequence
;
6116 /* Expand mode-line and scroll-bar events into two events:
6117 use posn as a fake prefix key. */
6120 if (t
+ 1 >= bufsize
)
6121 error ("Key sequence too long");
6126 /* Zap the position in key, so we know that we've
6127 expanded it, and don't try to do so again. */
6128 POSN_BUFFER_POSN (EVENT_START (key
))
6129 = Fcons (posn
, Qnil
);
6133 else if (EQ (kind
, Qswitch_frame
))
6135 /* If we're at the beginning of a key sequence, and the caller
6136 says it's okay, go ahead and return this event. If we're
6137 in the midst of a key sequence, delay it until the end. */
6138 if (t
> 0 || !can_return_switch_frame
)
6140 delayed_switch_frame
= key
;
6144 else if (CONSP (XCONS (key
)->cdr
)
6145 && CONSP (EVENT_START (key
))
6146 && CONSP (XCONS (EVENT_START (key
))->cdr
))
6150 posn
= POSN_BUFFER_POSN (EVENT_START (key
));
6151 /* Handle menu-bar events:
6152 insert the dummy prefix event `menu-bar'. */
6153 if (EQ (posn
, Qmenu_bar
))
6155 if (t
+ 1 >= bufsize
)
6156 error ("Key sequence too long");
6160 /* Zap the position in key, so we know that we've
6161 expanded it, and don't try to do so again. */
6162 POSN_BUFFER_POSN (EVENT_START (key
))
6163 = Fcons (posn
, Qnil
);
6166 goto replay_sequence
;
6168 else if (CONSP (posn
))
6170 /* We're looking at the second event of a
6171 sequence which we expanded before. Set
6172 last_real_key_start appropriately. */
6173 if (last_real_key_start
== t
&& t
> 0)
6174 last_real_key_start
= t
- 1;
6179 /* We have finally decided that KEY is something we might want
6181 first_binding
= (follow_key (key
,
6182 nmaps
- first_binding
,
6183 submaps
+ first_binding
,
6184 defs
+ first_binding
,
6185 submaps
+ first_binding
)
6188 /* If KEY wasn't bound, we'll try some fallbacks. */
6189 if (first_binding
>= nmaps
)
6193 head
= EVENT_HEAD (key
);
6194 if (help_char_p (head
) && t
> 0)
6196 read_key_sequence_cmd
= Vprefix_help_command
;
6198 last_nonmenu_event
= key
;
6199 /* The Microsoft C compiler can't handle the goto that
6207 Lisp_Object breakdown
;
6210 breakdown
= parse_modifiers (head
);
6211 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6212 /* Attempt to reduce an unbound mouse event to a simpler
6213 event that is bound:
6214 Drags reduce to clicks.
6215 Double-clicks reduce to clicks.
6216 Triple-clicks reduce to double-clicks, then to clicks.
6217 Down-clicks are eliminated.
6218 Double-downs reduce to downs, then are eliminated.
6219 Triple-downs reduce to double-downs, then to downs,
6220 then are eliminated. */
6221 if (modifiers
& (down_modifier
| drag_modifier
6222 | double_modifier
| triple_modifier
))
6224 while (modifiers
& (down_modifier
| drag_modifier
6225 | double_modifier
| triple_modifier
))
6227 Lisp_Object new_head
, new_click
;
6228 if (modifiers
& triple_modifier
)
6229 modifiers
^= (double_modifier
| triple_modifier
);
6230 else if (modifiers
& double_modifier
)
6231 modifiers
&= ~double_modifier
;
6232 else if (modifiers
& drag_modifier
)
6233 modifiers
&= ~drag_modifier
;
6236 /* Dispose of this `down' event by simply jumping
6237 back to replay_key, to get another event.
6239 Note that if this event came from mock input,
6240 then just jumping back to replay_key will just
6241 hand it to us again. So we have to wipe out any
6244 We could delete keybuf[t] and shift everything
6245 after that to the left by one spot, but we'd also
6246 have to fix up any variable that points into
6247 keybuf, and shifting isn't really necessary
6250 Adding prefixes for non-textual mouse clicks
6251 creates two characters of mock input, and both
6252 must be thrown away. If we're only looking at
6253 the prefix now, we can just jump back to
6254 replay_key. On the other hand, if we've already
6255 processed the prefix, and now the actual click
6256 itself is giving us trouble, then we've lost the
6257 state of the keymaps we want to backtrack to, and
6258 we need to replay the whole sequence to rebuild
6261 Beyond that, only function key expansion could
6262 create more than two keys, but that should never
6263 generate mouse events, so it's okay to zero
6264 mock_input in that case too.
6266 Isn't this just the most wonderful code ever? */
6267 if (t
== last_real_key_start
)
6274 mock_input
= last_real_key_start
;
6275 goto replay_sequence
;
6280 = apply_modifiers (modifiers
, XCONS (breakdown
)->car
);
6282 = Fcons (new_head
, Fcons (EVENT_START (key
), Qnil
));
6284 /* Look for a binding for this new key. follow_key
6285 promises that it didn't munge submaps the
6286 last time we called it, since key was unbound. */
6288 = (follow_key (new_click
,
6289 nmaps
- local_first_binding
,
6290 submaps
+ local_first_binding
,
6291 defs
+ local_first_binding
,
6292 submaps
+ local_first_binding
)
6293 + local_first_binding
);
6295 /* If that click is bound, go for it. */
6296 if (first_binding
< nmaps
)
6301 /* Otherwise, we'll leave key set to the drag event. */
6308 /* Normally, last_nonmenu_event gets the previous key we read.
6309 But when a mouse popup menu is being used,
6310 we don't update last_nonmenu_event; it continues to hold the mouse
6311 event that preceded the first level of menu. */
6312 if (!used_mouse_menu
)
6313 last_nonmenu_event
= key
;
6315 prev_fkey_map
= fkey_map
;
6316 prev_fkey_start
= fkey_start
;
6317 prev_fkey_end
= fkey_end
;
6319 prev_keytran_map
= keytran_map
;
6320 prev_keytran_start
= keytran_start
;
6321 prev_keytran_end
= keytran_end
;
6323 /* If the sequence is unbound, see if we can hang a function key
6324 off the end of it. We only want to scan real keyboard input
6325 for function key sequences, so if mock_input says that we're
6326 re-reading old events, don't examine it. */
6327 if (first_binding
>= nmaps
6330 Lisp_Object fkey_next
;
6332 /* Continue scan from fkey_end until we find a bound suffix.
6333 If we fail, increment fkey_start
6334 and start fkey_end from there. */
6335 while (fkey_end
< t
)
6339 key
= keybuf
[fkey_end
++];
6340 /* Look up meta-characters by prefixing them
6341 with meta_prefix_char. I hate this. */
6342 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6347 (access_keymap (fkey_map
, meta_prefix_char
, 1, 0)),
6349 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6352 fkey_next
= fkey_map
;
6355 = get_keyelt (access_keymap (fkey_next
, key
, 1, 0));
6357 #if 0 /* I didn't turn this on, because it might cause trouble
6358 for the mapping of return into C-m and tab into C-i. */
6359 /* Optionally don't map function keys into other things.
6360 This enables the user to redefine kp- keys easily. */
6361 if (SYMBOLP (key
) && !NILP (Vinhibit_function_key_mapping
))
6365 /* If the function key map gives a function, not an
6366 array, then call the function with no args and use
6367 its value instead. */
6368 if (SYMBOLP (fkey_next
) && ! NILP (Ffboundp (fkey_next
))
6371 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6375 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6376 fkey_next
= call1 (fkey_next
, prompt
);
6378 /* If the function returned something invalid,
6379 barf--don't ignore it.
6380 (To ignore it safely, we would need to gcpro a bunch of
6381 other variables.) */
6382 if (! (VECTORP (fkey_next
) || STRINGP (fkey_next
)))
6383 error ("Function in function-key-map returns invalid key sequence");
6386 function_key_possible
= ! NILP (fkey_next
);
6388 /* If keybuf[fkey_start..fkey_end] is bound in the
6389 function key map and it's a suffix of the current
6390 sequence (i.e. fkey_end == t), replace it with
6391 the binding and restart with fkey_start at the end. */
6392 if ((VECTORP (fkey_next
) || STRINGP (fkey_next
))
6395 int len
= XFASTINT (Flength (fkey_next
));
6397 t
= fkey_start
+ len
;
6399 error ("Key sequence too long");
6401 if (VECTORP (fkey_next
))
6402 bcopy (XVECTOR (fkey_next
)->contents
,
6403 keybuf
+ fkey_start
,
6404 (t
- fkey_start
) * sizeof (keybuf
[0]));
6405 else if (STRINGP (fkey_next
))
6409 for (i
= 0; i
< len
; i
++)
6410 XSETFASTINT (keybuf
[fkey_start
+ i
],
6411 XSTRING (fkey_next
)->data
[i
]);
6415 fkey_start
= fkey_end
= t
;
6416 fkey_map
= Vfunction_key_map
;
6418 /* Do pass the results through key-translation-map. */
6419 keytran_start
= keytran_end
= 0;
6420 keytran_map
= Vkey_translation_map
;
6422 goto replay_sequence
;
6425 fkey_map
= get_keymap_1 (fkey_next
, 0, 1);
6427 /* If we no longer have a bound suffix, try a new positions for
6429 if (NILP (fkey_map
))
6431 fkey_end
= ++fkey_start
;
6432 fkey_map
= Vfunction_key_map
;
6433 function_key_possible
= 0;
6438 /* Look for this sequence in key-translation-map. */
6440 Lisp_Object keytran_next
;
6442 /* Scan from keytran_end until we find a bound suffix. */
6443 while (keytran_end
< t
)
6447 key
= keybuf
[keytran_end
++];
6448 /* Look up meta-characters by prefixing them
6449 with meta_prefix_char. I hate this. */
6450 if (INTEGERP (key
) && XINT (key
) & meta_modifier
)
6455 (access_keymap (keytran_map
, meta_prefix_char
, 1, 0)),
6457 XSETFASTINT (key
, XFASTINT (key
) & ~meta_modifier
);
6460 keytran_next
= keytran_map
;
6463 = get_keyelt (access_keymap (keytran_next
, key
, 1, 0));
6465 /* If the key translation map gives a function, not an
6466 array, then call the function with no args and use
6467 its value instead. */
6468 if (SYMBOLP (keytran_next
) && ! NILP (Ffboundp (keytran_next
))
6469 && keytran_end
== t
)
6471 struct gcpro gcpro1
, gcpro2
, gcpro3
;
6475 GCPRO3 (fkey_map
, keytran_map
, delayed_switch_frame
);
6476 keytran_next
= call1 (keytran_next
, prompt
);
6478 /* If the function returned something invalid,
6479 barf--don't ignore it.
6480 (To ignore it safely, we would need to gcpro a bunch of
6481 other variables.) */
6482 if (! (VECTORP (keytran_next
) || STRINGP (keytran_next
)))
6483 error ("Function in key-translation-map returns invalid key sequence");
6486 key_translation_possible
= ! NILP (keytran_next
);
6488 /* If keybuf[keytran_start..keytran_end] is bound in the
6489 key translation map and it's a suffix of the current
6490 sequence (i.e. keytran_end == t), replace it with
6491 the binding and restart with keytran_start at the end. */
6492 if ((VECTORP (keytran_next
) || STRINGP (keytran_next
))
6493 && keytran_end
== t
)
6495 int len
= XFASTINT (Flength (keytran_next
));
6497 t
= keytran_start
+ len
;
6499 error ("Key sequence too long");
6501 if (VECTORP (keytran_next
))
6502 bcopy (XVECTOR (keytran_next
)->contents
,
6503 keybuf
+ keytran_start
,
6504 (t
- keytran_start
) * sizeof (keybuf
[0]));
6505 else if (STRINGP (keytran_next
))
6509 for (i
= 0; i
< len
; i
++)
6510 XSETFASTINT (keybuf
[keytran_start
+ i
],
6511 XSTRING (keytran_next
)->data
[i
]);
6515 keytran_start
= keytran_end
= t
;
6516 keytran_map
= Vkey_translation_map
;
6518 /* Don't pass the results of key-translation-map
6519 through function-key-map. */
6520 fkey_start
= fkey_end
= t
;
6521 fkey_map
= Vkey_translation_map
;
6523 goto replay_sequence
;
6526 keytran_map
= get_keymap_1 (keytran_next
, 0, 1);
6528 /* If we no longer have a bound suffix, try a new positions for
6530 if (NILP (keytran_map
))
6532 keytran_end
= ++keytran_start
;
6533 keytran_map
= Vkey_translation_map
;
6534 key_translation_possible
= 0;
6539 /* If KEY is not defined in any of the keymaps,
6540 and cannot be part of a function key or translation,
6541 and is an upper case letter
6542 use the corresponding lower-case letter instead. */
6543 if (first_binding
== nmaps
&& ! function_key_possible
6544 && ! key_translation_possible
6546 && ((((XINT (key
) & 0x3ffff)
6547 < XSTRING (current_buffer
->downcase_table
)->size
)
6548 && UPPERCASEP (XINT (key
) & 0x3ffff))
6549 || (XINT (key
) & shift_modifier
)))
6551 Lisp_Object new_key
;
6553 original_uppercase
= key
;
6554 original_uppercase_position
= t
- 1;
6556 if (XINT (new_key
) & shift_modifier
)
6557 XSETINT (new_key
, XINT (key
) & ~shift_modifier
);
6559 XSETINT (new_key
, (DOWNCASE (XINT (key
) & 0x3ffff)
6560 | (XINT (key
) & ~0x3ffff)));
6562 /* We have to do this unconditionally, regardless of whether
6563 the lower-case char is defined in the keymaps, because they
6564 might get translated through function-key-map. */
6565 keybuf
[t
- 1] = new_key
;
6568 fkey_map
= prev_fkey_map
;
6569 fkey_start
= prev_fkey_start
;
6570 fkey_end
= prev_fkey_end
;
6572 keytran_map
= prev_keytran_map
;
6573 keytran_start
= prev_keytran_start
;
6574 keytran_end
= prev_keytran_end
;
6576 goto replay_sequence
;
6578 /* If KEY is not defined in any of the keymaps,
6579 and cannot be part of a function key or translation,
6580 and is a shifted function key,
6581 use the corresponding unshifted function key instead. */
6582 if (first_binding
== nmaps
&& ! function_key_possible
6583 && ! key_translation_possible
6586 Lisp_Object breakdown
;
6589 breakdown
= parse_modifiers (key
);
6590 modifiers
= XINT (XCONS (XCONS (breakdown
)->cdr
)->car
);
6591 if (modifiers
& shift_modifier
)
6593 Lisp_Object new_key
;
6595 original_uppercase
= key
;
6596 original_uppercase_position
= t
- 1;
6598 modifiers
&= ~shift_modifier
;
6599 new_key
= apply_modifiers (modifiers
,
6600 XCONS (breakdown
)->car
);
6602 keybuf
[t
- 1] = new_key
;
6605 fkey_map
= prev_fkey_map
;
6606 fkey_start
= prev_fkey_start
;
6607 fkey_end
= prev_fkey_end
;
6609 keytran_map
= prev_keytran_map
;
6610 keytran_start
= prev_keytran_start
;
6611 keytran_end
= prev_keytran_end
;
6613 goto replay_sequence
;
6619 read_key_sequence_cmd
= (first_binding
< nmaps
6620 ? defs
[first_binding
]
6623 unread_switch_frame
= delayed_switch_frame
;
6624 unbind_to (count
, Qnil
);
6626 /* Don't downcase the last character if the caller says don't.
6627 Don't downcase it if the result is undefined, either. */
6628 if ((dont_downcase_last
|| first_binding
>= nmaps
)
6629 && t
- 1 == original_uppercase_position
)
6630 keybuf
[t
- 1] = original_uppercase
;
6632 /* Occasionally we fabricate events, perhaps by expanding something
6633 according to function-key-map, or by adding a prefix symbol to a
6634 mouse click in the scroll bar or modeline. In this cases, return
6635 the entire generated key sequence, even if we hit an unbound
6636 prefix or a definition before the end. This means that you will
6637 be able to push back the event properly, and also means that
6638 read-key-sequence will always return a logical unit.
6641 for (; t
< mock_input
; t
++)
6643 if (echo_keystrokes
)
6644 echo_char (keybuf
[t
]);
6645 add_command_key (keybuf
[t
]);
6651 #if 0 /* This doc string is too long for some compilers.
6652 This commented-out definition serves for DOC. */
6653 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6654 "Read a sequence of keystrokes and return as a string or vector.\n\
6655 The sequence is sufficient to specify a non-prefix command in the\n\
6656 current local and global maps.\n\
6658 First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\
6659 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\
6660 as a continuation of the previous key.\n\
6662 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\
6663 convert the last event to lower case. (Normally any upper case event\n\
6664 is converted to lower case if the original event is undefined and the lower\n\
6665 case equivalent is defined.) A non-nil value is appropriate for reading\n\
6666 a key sequence to be defined.\n\
6668 A C-g typed while in this function is treated like any other character,\n\
6669 and `quit-flag' is not set.\n\
6671 If the key sequence starts with a mouse click, then the sequence is read\n\
6672 using the keymaps of the buffer of the window clicked in, not the buffer\n\
6673 of the selected window as normal.\n\
6675 `read-key-sequence' drops unbound button-down events, since you normally\n\
6676 only care about the click or drag events which follow them. If a drag\n\
6677 or multi-click event is unbound, but the corresponding click event would\n\
6678 be bound, `read-key-sequence' turns the event into a click event at the\n\
6679 drag's starting position. This means that you don't have to distinguish\n\
6680 between click and drag, double, or triple events unless you want to.\n\
6682 `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\
6683 lines separating windows, and scroll bars with imaginary keys\n\
6684 `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\
6686 Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\
6687 function will process a switch-frame event if the user switches frames\n\
6688 before typing anything. If the user switches frames in the middle of a\n\
6689 key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\
6690 is nil, then the event will be put off until after the current key sequence.\n\
6692 `read-key-sequence' checks `function-key-map' for function key\n\
6693 sequences, where they wouldn't conflict with ordinary bindings. See\n\
6694 `function-key-map' for more details.")
6695 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6698 DEFUN ("read-key-sequence", Fread_key_sequence
, Sread_key_sequence
, 1, 4, 0,
6700 (prompt
, continue_echo
, dont_downcase_last
, can_return_switch_frame
)
6701 Lisp_Object prompt
, continue_echo
, dont_downcase_last
;
6702 Lisp_Object can_return_switch_frame
;
6704 Lisp_Object keybuf
[30];
6706 struct gcpro gcpro1
, gcpro2
;
6709 CHECK_STRING (prompt
, 0);
6712 bzero (keybuf
, sizeof keybuf
);
6714 gcpro1
.nvars
= (sizeof keybuf
/sizeof (keybuf
[0]));
6716 if (NILP (continue_echo
))
6717 this_command_key_count
= 0;
6719 i
= read_key_sequence (keybuf
, (sizeof keybuf
/sizeof (keybuf
[0])),
6720 prompt
, ! NILP (dont_downcase_last
),
6721 ! NILP (can_return_switch_frame
));
6729 return make_event_array (i
, keybuf
);
6732 DEFUN ("command-execute", Fcommand_execute
, Scommand_execute
, 1, 4, 0,
6733 "Execute CMD as an editor command.\n\
6734 CMD must be a symbol that satisfies the `commandp' predicate.\n\
6735 Optional second arg RECORD-FLAG non-nil\n\
6736 means unconditionally put this command in `command-history'.\n\
6737 Otherwise, that is done only if an arg is read using the minibuffer.\n\
6738 The argument KEYS specifies the value to use instead of (this-command-keys)\n\
6739 when reading the arguments; if it is nil, (this_command_key_count) is used.\n\
6740 The argument SPECIAL, if non-nil, means that this command is executing\n\
6741 a special event, so ignore the prefix argument and don't clear it.")
6742 (cmd
, record_flag
, keys
, special
)
6743 Lisp_Object cmd
, record_flag
, keys
, special
;
6745 register Lisp_Object final
;
6746 register Lisp_Object tem
;
6747 Lisp_Object prefixarg
;
6748 struct backtrace backtrace
;
6749 extern int debug_on_next_call
;
6751 debug_on_next_call
= 0;
6755 prefixarg
= current_kboard
->Vprefix_arg
;
6756 Vcurrent_prefix_arg
= prefixarg
;
6757 current_kboard
->Vprefix_arg
= Qnil
;
6764 tem
= Fget (cmd
, Qdisabled
);
6765 if (!NILP (tem
) && !NILP (Vrun_hooks
))
6767 tem
= Fsymbol_value (Qdisabled_command_hook
);
6769 return call1 (Vrun_hooks
, Qdisabled_command_hook
);
6775 final
= Findirect_function (cmd
);
6777 if (CONSP (final
) && (tem
= Fcar (final
), EQ (tem
, Qautoload
)))
6778 do_autoload (final
, cmd
);
6783 if (STRINGP (final
) || VECTORP (final
))
6785 /* If requested, place the macro in the command history. For
6786 other sorts of commands, call-interactively takes care of
6788 if (!NILP (record_flag
))
6790 = Fcons (Fcons (Qexecute_kbd_macro
,
6791 Fcons (final
, Fcons (prefixarg
, Qnil
))),
6794 return Fexecute_kbd_macro (final
, prefixarg
);
6796 if (CONSP (final
) || SUBRP (final
) || COMPILEDP (final
))
6798 backtrace
.next
= backtrace_list
;
6799 backtrace_list
= &backtrace
;
6800 backtrace
.function
= &Qcall_interactively
;
6801 backtrace
.args
= &cmd
;
6802 backtrace
.nargs
= 1;
6803 backtrace
.evalargs
= 0;
6805 tem
= Fcall_interactively (cmd
, record_flag
, keys
);
6807 backtrace_list
= backtrace
.next
;
6813 DEFUN ("execute-extended-command", Fexecute_extended_command
, Sexecute_extended_command
,
6815 "Read function name, then read its arguments and call it.")
6817 Lisp_Object prefixarg
;
6819 Lisp_Object function
;
6821 Lisp_Object saved_keys
;
6822 struct gcpro gcpro1
;
6824 saved_keys
= Fvector (this_command_key_count
,
6825 XVECTOR (this_command_keys
)->contents
);
6827 GCPRO1 (saved_keys
);
6829 if (EQ (prefixarg
, Qminus
))
6831 else if (CONSP (prefixarg
) && XINT (XCONS (prefixarg
)->car
) == 4)
6832 strcpy (buf
, "C-u ");
6833 else if (CONSP (prefixarg
) && INTEGERP (XCONS (prefixarg
)->car
))
6835 if (sizeof (int) == sizeof (EMACS_INT
))
6836 sprintf (buf
, "%d ", XINT (XCONS (prefixarg
)->car
));
6837 else if (sizeof (long) == sizeof (EMACS_INT
))
6838 sprintf (buf
, "%ld ", XINT (XCONS (prefixarg
)->car
));
6842 else if (INTEGERP (prefixarg
))
6844 if (sizeof (int) == sizeof (EMACS_INT
))
6845 sprintf (buf
, "%d ", XINT (prefixarg
));
6846 else if (sizeof (long) == sizeof (EMACS_INT
))
6847 sprintf (buf
, "%ld ", XINT (prefixarg
));
6852 /* This isn't strictly correct if execute-extended-command
6853 is bound to anything else. Perhaps it should use
6854 this_command_keys? */
6855 strcat (buf
, "M-x ");
6857 /* Prompt with buf, and then read a string, completing from and
6858 restricting to the set of all defined commands. Don't provide
6859 any initial input. Save the command read on the extended-command
6861 function
= Fcompleting_read (build_string (buf
),
6862 Vobarray
, Qcommandp
,
6863 Qt
, Qnil
, Qextended_command_history
);
6865 if (STRINGP (function
) && XSTRING (function
)->size
== 0)
6866 error ("No command name given");
6868 /* Set this_command_keys to the concatenation of saved_keys and
6869 function, followed by a RET. */
6871 struct Lisp_String
*str
;
6876 this_command_key_count
= 0;
6878 keys
= XVECTOR (saved_keys
)->contents
;
6879 for (i
= 0; i
< XVECTOR (saved_keys
)->size
; i
++)
6880 add_command_key (keys
[i
]);
6882 str
= XSTRING (function
);
6883 for (i
= 0; i
< str
->size
; i
++)
6885 XSETFASTINT (tem
, str
->data
[i
]);
6886 add_command_key (tem
);
6889 XSETFASTINT (tem
, '\015');
6890 add_command_key (tem
);
6895 function
= Fintern (function
, Qnil
);
6896 current_kboard
->Vprefix_arg
= prefixarg
;
6897 this_command
= function
;
6899 /* If enabled, show which key runs this command. */
6900 if (!NILP (Vsuggest_key_bindings
)
6901 && SYMBOLP (function
))
6903 Lisp_Object bindings
;
6905 bindings
= Fwhere_is_internal (function
, Voverriding_local_map
,
6908 if (!NILP (bindings
))
6910 message ("You can run the command `%s' by typing %s",
6911 XSYMBOL (function
)->name
->data
,
6912 XSTRING (Fkey_description (bindings
))->data
);
6913 Fsit_for ((NUMBERP (Vsuggest_key_bindings
)
6914 ? Vsuggest_key_bindings
: make_number (2)),
6919 return Fcommand_execute (function
, Qt
, Qnil
, Qnil
);
6922 /* Find the set of keymaps now active.
6923 Store into *MAPS_P a vector holding the various maps
6924 and return the number of them. The vector was malloc'd
6925 and the caller should free it. */
6928 current_active_maps (maps_p
)
6929 Lisp_Object
**maps_p
;
6931 Lisp_Object
*tmaps
, *maps
;
6934 /* Should overriding-terminal-local-map and overriding-local-map apply? */
6935 if (!NILP (Voverriding_local_map_menu_flag
))
6937 /* Yes, use them (if non-nil) as well as the global map. */
6938 maps
= (Lisp_Object
*) xmalloc (3 * sizeof (maps
[0]));
6940 if (!NILP (current_kboard
->Voverriding_terminal_local_map
))
6941 maps
[nmaps
++] = current_kboard
->Voverriding_terminal_local_map
;
6942 if (!NILP (Voverriding_local_map
))
6943 maps
[nmaps
++] = Voverriding_local_map
;
6947 /* No, so use major and minor mode keymaps. */
6948 nmaps
= current_minor_maps (NULL
, &tmaps
);
6949 maps
= (Lisp_Object
*) xmalloc ((nmaps
+ 2) * sizeof (maps
[0]));
6950 bcopy (tmaps
, maps
, nmaps
* sizeof (maps
[0]));
6951 #ifdef USE_TEXT_PROPERTIES
6952 maps
[nmaps
++] = get_local_map (PT
, current_buffer
);
6954 maps
[nmaps
++] = current_buffer
->keymap
;
6957 maps
[nmaps
++] = current_global_map
;
6963 /* Return nonzero if input events are pending. */
6965 detect_input_pending ()
6968 get_input_pending (&input_pending
, 0);
6970 return input_pending
;
6973 /* Return nonzero if input events are pending.
6974 Execute timers immediately; don't make events for them. */
6976 detect_input_pending_run_timers (do_display
)
6979 int old_timers_run
= timers_run
;
6982 get_input_pending (&input_pending
, 1);
6984 if (old_timers_run
!= timers_run
&& do_display
)
6985 redisplay_preserve_echo_area ();
6987 return input_pending
;
6990 /* This is called in some cases before a possible quit.
6991 It cases the next call to detect_input_pending to recompute input_pending.
6992 So calling this function unnecessarily can't do any harm. */
6993 clear_input_pending ()
6998 DEFUN ("input-pending-p", Finput_pending_p
, Sinput_pending_p
, 0, 0, 0,
6999 "T if command input is currently available with no waiting.\n\
7000 Actually, the value is nil only if we can be sure that no input is available.")
7003 if (!NILP (Vunread_command_events
) || unread_command_char
!= -1)
7006 get_input_pending (&input_pending
, 1);
7007 return input_pending
> 0 ? Qt
: Qnil
;
7010 DEFUN ("recent-keys", Frecent_keys
, Srecent_keys
, 0, 0, 0,
7011 "Return vector of last 100 events, not counting those from keyboard macros.")
7014 Lisp_Object
*keys
= XVECTOR (recent_keys
)->contents
;
7017 if (total_keys
< NUM_RECENT_KEYS
)
7018 return Fvector (total_keys
, keys
);
7021 val
= Fvector (NUM_RECENT_KEYS
, keys
);
7022 bcopy (keys
+ recent_keys_index
,
7023 XVECTOR (val
)->contents
,
7024 (NUM_RECENT_KEYS
- recent_keys_index
) * sizeof (Lisp_Object
));
7026 XVECTOR (val
)->contents
+ NUM_RECENT_KEYS
- recent_keys_index
,
7027 recent_keys_index
* sizeof (Lisp_Object
));
7032 DEFUN ("this-command-keys", Fthis_command_keys
, Sthis_command_keys
, 0, 0, 0,
7033 "Return the key sequence that invoked this command.\n\
7034 The value is a string or a vector.")
7037 return make_event_array (this_command_key_count
,
7038 XVECTOR (this_command_keys
)->contents
);
7041 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths
,
7042 Sreset_this_command_lengths
, 0, 0, 0,
7043 "Used for complicated reasons in `universal-argument-other-key'.\n\
7045 `universal-argument-other-key' rereads the event just typed.\n\
7046 It then gets translated through `function-key-map'.\n\
7047 The translated event gets included in the echo area and in\n\
7048 the value of `this-command-keys' in addition to the raw original event.\n\
7049 That is not right.\n\
7051 Calling this function directs the translated event to replace\n\
7052 the original event, so that only one version of the event actually\n\
7053 appears in the echo area and in the value of `this-command-keys.'.")
7056 before_command_restore_flag
= 1;
7057 before_command_key_count_1
= before_command_key_count
;
7058 before_command_echo_length_1
= before_command_echo_length
;
7061 DEFUN ("recursion-depth", Frecursion_depth
, Srecursion_depth
, 0, 0, 0,
7062 "Return the current depth in recursive edits.")
7066 XSETFASTINT (temp
, command_loop_level
+ minibuf_level
);
7070 DEFUN ("open-dribble-file", Fopen_dribble_file
, Sopen_dribble_file
, 1, 1,
7071 "FOpen dribble file: ",
7072 "Start writing all keyboard characters to a dribble file called FILE.\n\
7073 If FILE is nil, close any open dribble file.")
7084 file
= Fexpand_file_name (file
, Qnil
);
7085 dribble
= fopen (XSTRING (file
)->data
, "w");
7087 report_file_error ("Opening dribble", Fcons (file
, Qnil
));
7092 DEFUN ("discard-input", Fdiscard_input
, Sdiscard_input
, 0, 0, 0,
7093 "Discard the contents of the terminal input buffer.\n\
7094 Also cancel any kbd macro being defined.")
7097 current_kboard
->defining_kbd_macro
= Qnil
;
7098 update_mode_lines
++;
7100 Vunread_command_events
= Qnil
;
7101 unread_command_char
= -1;
7103 discard_tty_input ();
7105 /* Without the cast, GCC complains that this assignment loses the
7106 volatile qualifier of kbd_store_ptr. Is there anything wrong
7108 kbd_fetch_ptr
= (struct input_event
*) kbd_store_ptr
;
7109 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7115 DEFUN ("suspend-emacs", Fsuspend_emacs
, Ssuspend_emacs
, 0, 1, "",
7116 "Stop Emacs and return to superior process. You can resume later.\n\
7117 If `cannot-suspend' is non-nil, or if the system doesn't support job\n\
7118 control, run a subshell instead.\n\n\
7119 If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\
7120 to be read as terminal input by Emacs's parent, after suspension.\n\
7122 Before suspending, run the normal hook `suspend-hook'.\n\
7123 After resumption run the normal hook `suspend-resume-hook'.\n\
7125 Some operating systems cannot stop the Emacs process and resume it later.\n\
7126 On such systems, Emacs starts a subshell instead of suspending.")
7128 Lisp_Object stuffstring
;
7131 int count
= specpdl_ptr
- specpdl
;
7132 int old_height
, old_width
;
7134 struct gcpro gcpro1
, gcpro2
;
7135 extern init_sys_modes ();
7137 if (!NILP (stuffstring
))
7138 CHECK_STRING (stuffstring
, 0);
7140 /* Run the functions in suspend-hook. */
7141 if (!NILP (Vrun_hooks
))
7142 call1 (Vrun_hooks
, intern ("suspend-hook"));
7144 GCPRO1 (stuffstring
);
7145 get_frame_size (&old_width
, &old_height
);
7147 /* sys_suspend can get an error if it tries to fork a subshell
7148 and the system resources aren't available for that. */
7149 record_unwind_protect (init_sys_modes
, 0);
7150 stuff_buffered_input (stuffstring
);
7155 unbind_to (count
, Qnil
);
7157 /* Check if terminal/window size has changed.
7158 Note that this is not useful when we are running directly
7159 with a window system; but suspend should be disabled in that case. */
7160 get_frame_size (&width
, &height
);
7161 if (width
!= old_width
|| height
!= old_height
)
7162 change_frame_size (selected_frame
, height
, width
, 0, 0);
7164 /* Run suspend-resume-hook. */
7165 if (!NILP (Vrun_hooks
))
7166 call1 (Vrun_hooks
, intern ("suspend-resume-hook"));
7172 /* If STUFFSTRING is a string, stuff its contents as pending terminal input.
7173 Then in any case stuff anything Emacs has read ahead and not used. */
7175 stuff_buffered_input (stuffstring
)
7176 Lisp_Object stuffstring
;
7178 /* stuff_char works only in BSD, versions 4.2 and up. */
7181 register unsigned char *p
;
7183 if (STRINGP (stuffstring
))
7187 p
= XSTRING (stuffstring
)->data
;
7188 count
= XSTRING (stuffstring
)->size
;
7193 /* Anything we have read ahead, put back for the shell to read. */
7194 /* ?? What should this do when we have multiple keyboards??
7195 Should we ignore anything that was typed in at the "wrong" kboard? */
7196 for (; kbd_fetch_ptr
!= kbd_store_ptr
; kbd_fetch_ptr
++)
7198 if (kbd_fetch_ptr
== kbd_buffer
+ KBD_BUFFER_SIZE
)
7199 kbd_fetch_ptr
= kbd_buffer
;
7200 if (kbd_fetch_ptr
->kind
== ascii_keystroke
)
7201 stuff_char (kbd_fetch_ptr
->code
);
7202 kbd_fetch_ptr
->kind
= no_event
;
7203 (XVECTOR (kbd_buffer_frame_or_window
)->contents
[kbd_fetch_ptr
7209 #endif /* BSD and not BSD4_1 */
7212 set_waiting_for_input (time_to_clear
)
7213 EMACS_TIME
*time_to_clear
;
7215 input_available_clear_time
= time_to_clear
;
7217 /* Tell interrupt_signal to throw back to read_char, */
7218 waiting_for_input
= 1;
7220 /* If interrupt_signal was called before and buffered a C-g,
7221 make it run again now, to avoid timing error. */
7222 if (!NILP (Vquit_flag
))
7223 quit_throw_to_read_char ();
7226 clear_waiting_for_input ()
7228 /* Tell interrupt_signal not to throw back to read_char, */
7229 waiting_for_input
= 0;
7230 input_available_clear_time
= 0;
7233 /* This routine is called at interrupt level in response to C-G.
7234 If interrupt_input, this is the handler for SIGINT.
7235 Otherwise, it is called from kbd_buffer_store_event,
7236 in handling SIGIO or SIGTINT.
7238 If `waiting_for_input' is non zero, then unless `echoing' is nonzero,
7239 immediately throw back to read_char.
7241 Otherwise it sets the Lisp variable quit-flag not-nil.
7242 This causes eval to throw, when it gets a chance.
7243 If quit-flag is already non-nil, it stops the job right away. */
7246 interrupt_signal (signalnum
) /* If we don't have an argument, */
7247 int signalnum
; /* some compilers complain in signal calls. */
7250 /* Must preserve main program's value of errno. */
7251 int old_errno
= errno
;
7254 if (!read_socket_hook
&& NILP (Vwindow_system
))
7256 /* USG systems forget handlers when they are used;
7257 must reestablish each time */
7258 signal (SIGINT
, interrupt_signal
);
7259 signal (SIGQUIT
, interrupt_signal
);
7265 if (!NILP (Vquit_flag
) && FRAME_TERMCAP_P (selected_frame
))
7270 #ifdef SIGTSTP /* Support possible in later USG versions */
7272 * On systems which can suspend the current process and return to the original
7273 * shell, this command causes the user to end up back at the shell.
7274 * The "Auto-save" and "Abort" questions are not asked until
7275 * the user elects to return to emacs, at which point he can save the current
7276 * job and either dump core or continue.
7281 if (sys_suspend () == -1)
7283 printf ("Not running as a subprocess;\n");
7284 printf ("you can continue or abort.\n");
7287 /* Perhaps should really fork an inferior shell?
7288 But that would not provide any way to get back
7289 to the original shell, ever. */
7290 printf ("No support for stopping a process on this operating system;\n");
7291 printf ("you can continue or abort.\n");
7292 #endif /* not VMS */
7293 #endif /* not SIGTSTP */
7295 /* We must remain inside the screen area when the internal terminal
7296 is used. Note that [Enter] is not echoed by dos. */
7299 /* It doesn't work to autosave while GC is in progress;
7300 the code used for auto-saving doesn't cope with the mark bit. */
7301 if (!gc_in_progress
)
7303 printf ("Auto-save? (y or n) ");
7305 if (((c
= getchar ()) & ~040) == 'Y')
7307 Fdo_auto_save (Qt
, Qnil
);
7309 printf ("\r\nAuto-save done");
7310 #else /* not MSDOS */
7311 printf ("Auto-save done\n");
7312 #endif /* not MSDOS */
7314 while (c
!= '\n') c
= getchar ();
7318 /* During GC, it must be safe to reenable quitting again. */
7319 Vinhibit_quit
= Qnil
;
7322 #endif /* not MSDOS */
7323 printf ("Garbage collection in progress; cannot auto-save now\r\n");
7324 printf ("but will instead do a real quit after garbage collection ends\r\n");
7329 printf ("\r\nAbort? (y or n) ");
7330 #else /* not MSDOS */
7332 printf ("Abort (and enter debugger)? (y or n) ");
7334 printf ("Abort (and dump core)? (y or n) ");
7335 #endif /* not VMS */
7336 #endif /* not MSDOS */
7338 if (((c
= getchar ()) & ~040) == 'Y')
7340 while (c
!= '\n') c
= getchar ();
7342 printf ("\r\nContinuing...\r\n");
7343 #else /* not MSDOS */
7344 printf ("Continuing...\n");
7345 #endif /* not MSDOS */
7351 /* If executing a function that wants to be interrupted out of
7352 and the user has not deferred quitting by binding `inhibit-quit'
7353 then quit right away. */
7354 if (immediate_quit
&& NILP (Vinhibit_quit
))
7358 Fsignal (Qquit
, Qnil
);
7361 /* Else request quit when it's safe */
7365 if (waiting_for_input
&& !echoing
)
7366 quit_throw_to_read_char ();
7371 /* Handle a C-g by making read_char return C-g. */
7373 quit_throw_to_read_char ()
7375 quit_error_check ();
7377 /* Prevent another signal from doing this before we finish. */
7378 clear_waiting_for_input ();
7381 Vunread_command_events
= Qnil
;
7382 unread_command_char
= -1;
7384 #if 0 /* Currently, sit_for is called from read_char without turning
7385 off polling. And that can call set_waiting_for_input.
7386 It seems to be harmless. */
7387 #ifdef POLL_FOR_INPUT
7388 /* May be > 1 if in recursive minibuffer. */
7389 if (poll_suppress_count
== 0)
7394 if (FRAMEP (internal_last_event_frame
)
7395 && XFRAME (internal_last_event_frame
) != selected_frame
)
7396 do_switch_frame (make_lispy_switch_frame (internal_last_event_frame
),
7400 _longjmp (getcjmp
, 1);
7403 DEFUN ("set-input-mode", Fset_input_mode
, Sset_input_mode
, 3, 4, 0,
7404 "Set mode of reading keyboard input.\n\
7405 First arg INTERRUPT non-nil means use input interrupts;\n\
7406 nil means use CBREAK mode.\n\
7407 Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\
7408 (no effect except in CBREAK mode).\n\
7409 Third arg META t means accept 8-bit input (for a Meta key).\n\
7410 META nil means ignore the top bit, on the assumption it is parity.\n\
7411 Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\
7412 Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\
7413 See also `current-input-mode'.")
7414 (interrupt
, flow
, meta
, quit
)
7415 Lisp_Object interrupt
, flow
, meta
, quit
;
7418 && (!INTEGERP (quit
) || XINT (quit
) < 0 || XINT (quit
) > 0400))
7419 error ("set-input-mode: QUIT must be an ASCII character");
7421 #ifdef POLL_FOR_INPUT
7426 /* this causes startup screen to be restored and messes with the mouse */
7431 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7432 if (read_socket_hook
)
7434 /* When using X, don't give the user a real choice,
7435 because we haven't implemented the mechanisms to support it. */
7436 #ifdef NO_SOCK_SIGIO
7437 interrupt_input
= 0;
7438 #else /* not NO_SOCK_SIGIO */
7439 interrupt_input
= 1;
7440 #endif /* NO_SOCK_SIGIO */
7443 interrupt_input
= !NILP (interrupt
);
7444 #else /* not SIGIO */
7445 interrupt_input
= 0;
7446 #endif /* not SIGIO */
7448 /* Our VMS input only works by interrupts, as of now. */
7450 interrupt_input
= 1;
7453 flow_control
= !NILP (flow
);
7456 else if (EQ (meta
, Qt
))
7461 /* Don't let this value be out of range. */
7462 quit_char
= XINT (quit
) & (meta_key
? 0377 : 0177);
7468 #ifdef POLL_FOR_INPUT
7469 poll_suppress_count
= 1;
7475 DEFUN ("current-input-mode", Fcurrent_input_mode
, Scurrent_input_mode
, 0, 0, 0,
7476 "Return information about the way Emacs currently reads keyboard input.\n\
7477 The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\
7478 INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\
7479 nil, Emacs is using CBREAK mode.\n\
7480 FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\
7481 terminal; this does not apply if Emacs uses interrupt-driven input.\n\
7482 META is t if accepting 8-bit input with 8th bit as Meta flag.\n\
7483 META nil means ignoring the top bit, on the assumption it is parity.\n\
7484 META is neither t nor nil if accepting 8-bit input and using\n\
7485 all 8 bits as the character code.\n\
7486 QUIT is the character Emacs currently uses to quit.\n\
7487 The elements of this list correspond to the arguments of\n\
7493 val
[0] = interrupt_input
? Qt
: Qnil
;
7494 val
[1] = flow_control
? Qt
: Qnil
;
7495 val
[2] = meta_key
== 2 ? make_number (0) : meta_key
== 1 ? Qt
: Qnil
;
7496 XSETFASTINT (val
[3], quit_char
);
7498 return Flist (sizeof (val
) / sizeof (val
[0]), val
);
7503 * Set up a new kboard object with reasonable initial values.
7509 kb
->Voverriding_terminal_local_map
= Qnil
;
7510 kb
->Vlast_command
= Qnil
;
7511 kb
->Vprefix_arg
= Qnil
;
7512 kb
->kbd_queue
= Qnil
;
7513 kb
->kbd_queue_has_data
= 0;
7514 kb
->immediate_echo
= 0;
7515 kb
->echoptr
= kb
->echobuf
;
7516 kb
->echo_after_prompt
= -1;
7517 kb
->kbd_macro_buffer
= 0;
7518 kb
->kbd_macro_bufsize
= 0;
7519 kb
->defining_kbd_macro
= Qnil
;
7520 kb
->Vlast_kbd_macro
= Qnil
;
7521 kb
->reference_count
= 0;
7522 kb
->Vsystem_key_alist
= Qnil
;
7523 kb
->system_key_syms
= Qnil
;
7524 kb
->Vdefault_minibuffer_frame
= Qnil
;
7528 * Destroy the contents of a kboard object, but not the object itself.
7529 * We use this just before deleting it, or if we're going to initialize
7536 if (kb
->kbd_macro_buffer
)
7537 xfree (kb
->kbd_macro_buffer
);
7546 for (kbp
= &all_kboards
; *kbp
!= kb
; kbp
= &(*kbp
)->next_kboard
)
7549 *kbp
= kb
->next_kboard
;
7557 /* This is correct before outermost invocation of the editor loop */
7558 command_loop_level
= -1;
7560 quit_char
= Ctl ('g');
7561 Vunread_command_events
= Qnil
;
7562 unread_command_char
= -1;
7563 EMACS_SET_SECS_USECS (timer_idleness_start_time
, -1, -1);
7565 recent_keys_index
= 0;
7566 kbd_fetch_ptr
= kbd_buffer
;
7567 kbd_store_ptr
= kbd_buffer
;
7568 kbd_buffer_frame_or_window
7569 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7571 do_mouse_tracking
= Qnil
;
7576 /* This means that command_loop_1 won't try to select anything the first
7578 internal_last_event_frame
= Qnil
;
7579 Vlast_event_frame
= internal_last_event_frame
;
7583 current_kboard
= initial_kboard
;
7585 wipe_kboard (current_kboard
);
7586 init_kboard (current_kboard
);
7589 Ffillarray (kbd_buffer_frame_or_window
, Qnil
);
7591 kbd_buffer_frame_or_window
7592 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7593 if (!noninteractive
&& !read_socket_hook
&& NILP (Vwindow_system
))
7595 signal (SIGINT
, interrupt_signal
);
7596 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
7597 /* For systems with SysV TERMIO, C-g is set up for both SIGINT and
7598 SIGQUIT and we can't tell which one it will give us. */
7599 signal (SIGQUIT
, interrupt_signal
);
7600 #endif /* HAVE_TERMIO */
7602 /* Note SIGIO has been undef'd if FIONREAD is missing. */
7604 if (!noninteractive
)
7605 signal (SIGIO
, input_available_signal
);
7608 /* Use interrupt input by default, if it works and noninterrupt input
7609 has deficiencies. */
7611 #ifdef INTERRUPT_INPUT
7612 interrupt_input
= 1;
7614 interrupt_input
= 0;
7617 /* Our VMS input only works by interrupts, as of now. */
7619 interrupt_input
= 1;
7625 if (keyboard_init_hook
)
7626 (*keyboard_init_hook
) ();
7628 #ifdef POLL_FOR_INPUT
7629 poll_suppress_count
= 1;
7634 /* This type's only use is in syms_of_keyboard, to initialize the
7635 event header symbols and put properties on them. */
7642 struct event_head head_table
[] = {
7643 &Qmouse_movement
, "mouse-movement", &Qmouse_movement
,
7644 &Qscroll_bar_movement
, "scroll-bar-movement", &Qmouse_movement
,
7645 &Qswitch_frame
, "switch-frame", &Qswitch_frame
,
7646 &Qdelete_frame
, "delete-frame", &Qdelete_frame
,
7647 &Qiconify_frame
, "iconify-frame", &Qiconify_frame
,
7648 &Qmake_frame_visible
, "make-frame-visible", &Qmake_frame_visible
,
7653 Qdisabled_command_hook
= intern ("disabled-command-hook");
7654 staticpro (&Qdisabled_command_hook
);
7656 Qself_insert_command
= intern ("self-insert-command");
7657 staticpro (&Qself_insert_command
);
7659 Qforward_char
= intern ("forward-char");
7660 staticpro (&Qforward_char
);
7662 Qbackward_char
= intern ("backward-char");
7663 staticpro (&Qbackward_char
);
7665 Qdisabled
= intern ("disabled");
7666 staticpro (&Qdisabled
);
7668 Qundefined
= intern ("undefined");
7669 staticpro (&Qundefined
);
7671 Qpre_command_hook
= intern ("pre-command-hook");
7672 staticpro (&Qpre_command_hook
);
7674 Qpost_command_hook
= intern ("post-command-hook");
7675 staticpro (&Qpost_command_hook
);
7677 Qpost_command_idle_hook
= intern ("post-command-idle-hook");
7678 staticpro (&Qpost_command_idle_hook
);
7680 Qdeferred_action_function
= intern ("deferred-action-function");
7681 staticpro (&Qdeferred_action_function
);
7683 Qcommand_hook_internal
= intern ("command-hook-internal");
7684 staticpro (&Qcommand_hook_internal
);
7686 Qfunction_key
= intern ("function-key");
7687 staticpro (&Qfunction_key
);
7688 Qmouse_click
= intern ("mouse-click");
7689 staticpro (&Qmouse_click
);
7690 Qtimer_event
= intern ("timer-event");
7691 staticpro (&Qtimer_event
);
7693 Qmenu_enable
= intern ("menu-enable");
7694 staticpro (&Qmenu_enable
);
7696 Qmode_line
= intern ("mode-line");
7697 staticpro (&Qmode_line
);
7698 Qvertical_line
= intern ("vertical-line");
7699 staticpro (&Qvertical_line
);
7700 Qvertical_scroll_bar
= intern ("vertical-scroll-bar");
7701 staticpro (&Qvertical_scroll_bar
);
7702 Qmenu_bar
= intern ("menu-bar");
7703 staticpro (&Qmenu_bar
);
7705 Qabove_handle
= intern ("above-handle");
7706 staticpro (&Qabove_handle
);
7707 Qhandle
= intern ("handle");
7708 staticpro (&Qhandle
);
7709 Qbelow_handle
= intern ("below-handle");
7710 staticpro (&Qbelow_handle
);
7712 Qevent_kind
= intern ("event-kind");
7713 staticpro (&Qevent_kind
);
7714 Qevent_symbol_elements
= intern ("event-symbol-elements");
7715 staticpro (&Qevent_symbol_elements
);
7716 Qevent_symbol_element_mask
= intern ("event-symbol-element-mask");
7717 staticpro (&Qevent_symbol_element_mask
);
7718 Qmodifier_cache
= intern ("modifier-cache");
7719 staticpro (&Qmodifier_cache
);
7721 Qrecompute_lucid_menubar
= intern ("recompute-lucid-menubar");
7722 staticpro (&Qrecompute_lucid_menubar
);
7723 Qactivate_menubar_hook
= intern ("activate-menubar-hook");
7724 staticpro (&Qactivate_menubar_hook
);
7726 Qpolling_period
= intern ("polling-period");
7727 staticpro (&Qpolling_period
);
7730 struct event_head
*p
;
7732 for (p
= head_table
;
7733 p
< head_table
+ (sizeof (head_table
) / sizeof (head_table
[0]));
7736 *p
->var
= intern (p
->name
);
7738 Fput (*p
->var
, Qevent_kind
, *p
->kind
);
7739 Fput (*p
->var
, Qevent_symbol_elements
, Fcons (*p
->var
, Qnil
));
7743 button_down_location
= Fmake_vector (make_number (NUM_MOUSE_BUTTONS
), Qnil
);
7744 staticpro (&button_down_location
);
7748 int len
= sizeof (modifier_names
) / sizeof (modifier_names
[0]);
7750 modifier_symbols
= Fmake_vector (make_number (len
), Qnil
);
7751 for (i
= 0; i
< len
; i
++)
7752 if (modifier_names
[i
])
7753 XVECTOR (modifier_symbols
)->contents
[i
] = intern (modifier_names
[i
]);
7754 staticpro (&modifier_symbols
);
7757 recent_keys
= Fmake_vector (make_number (NUM_RECENT_KEYS
), Qnil
);
7758 staticpro (&recent_keys
);
7760 this_command_keys
= Fmake_vector (make_number (40), Qnil
);
7761 staticpro (&this_command_keys
);
7763 Qextended_command_history
= intern ("extended-command-history");
7764 Fset (Qextended_command_history
, Qnil
);
7765 staticpro (&Qextended_command_history
);
7767 kbd_buffer_frame_or_window
7768 = Fmake_vector (make_number (KBD_BUFFER_SIZE
), Qnil
);
7769 staticpro (&kbd_buffer_frame_or_window
);
7771 accent_key_syms
= Qnil
;
7772 staticpro (&accent_key_syms
);
7774 func_key_syms
= Qnil
;
7775 staticpro (&func_key_syms
);
7778 staticpro (&mouse_syms
);
7780 unread_switch_frame
= Qnil
;
7781 staticpro (&unread_switch_frame
);
7783 defsubr (&Sevent_convert_list
);
7784 defsubr (&Sread_key_sequence
);
7785 defsubr (&Srecursive_edit
);
7787 defsubr (&Strack_mouse
);
7789 defsubr (&Sinput_pending_p
);
7790 defsubr (&Scommand_execute
);
7791 defsubr (&Srecent_keys
);
7792 defsubr (&Sthis_command_keys
);
7793 defsubr (&Sreset_this_command_lengths
);
7794 defsubr (&Ssuspend_emacs
);
7795 defsubr (&Sabort_recursive_edit
);
7796 defsubr (&Sexit_recursive_edit
);
7797 defsubr (&Srecursion_depth
);
7798 defsubr (&Stop_level
);
7799 defsubr (&Sdiscard_input
);
7800 defsubr (&Sopen_dribble_file
);
7801 defsubr (&Sset_input_mode
);
7802 defsubr (&Scurrent_input_mode
);
7803 defsubr (&Sexecute_extended_command
);
7805 DEFVAR_LISP ("last-command-char", &last_command_char
,
7806 "Last input event that was part of a command.");
7808 DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char
,
7809 "Last input event that was part of a command.");
7811 DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event
,
7812 "Last input event in a command, except for mouse menu events.\n\
7813 Mouse menus give back keys that don't look like mouse events;\n\
7814 this variable holds the actual mouse event that led to the menu,\n\
7815 so that you can determine whether the command was run by mouse or not.");
7817 DEFVAR_LISP ("last-input-char", &last_input_char
,
7818 "Last input event.");
7820 DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char
,
7821 "Last input event.");
7823 DEFVAR_LISP ("unread-command-events", &Vunread_command_events
,
7824 "List of objects to be read as next command input events.");
7826 DEFVAR_INT ("unread-command-char", &unread_command_char
,
7827 "If not -1, an object to be read as next command input event.");
7829 DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char
,
7830 "Meta-prefix character code. Meta-foo as command input\n\
7831 turns into this character followed by foo.");
7832 XSETINT (meta_prefix_char
, 033);
7834 DEFVAR_KBOARD ("last-command", Vlast_command
,
7835 "The last command executed. Normally a symbol with a function definition,\n\
7836 but can be whatever was found in the keymap, or whatever the variable\n\
7837 `this-command' was set to by that command.\n\
7839 The value `mode-exit' is special; it means that the previous command\n\
7840 read an event that told it to exit, and it did so and unread that event.\n\
7841 In other words, the present command is the event that made the previous\n\
7844 The value `kill-region' is special; it means that the previous command\n\
7845 was a kill command.");
7847 DEFVAR_LISP ("this-command", &this_command
,
7848 "The command now being executed.\n\
7849 The command can set this variable; whatever is put here\n\
7850 will be in `last-command' during the following command.");
7851 this_command
= Qnil
;
7853 DEFVAR_INT ("auto-save-interval", &auto_save_interval
,
7854 "*Number of keyboard input characters between auto-saves.\n\
7855 Zero means disable autosaving due to number of characters typed.");
7856 auto_save_interval
= 300;
7858 DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout
,
7859 "*Number of seconds idle time before auto-save.\n\
7860 Zero or nil means disable auto-saving due to idleness.\n\
7861 After auto-saving due to this many seconds of idle time,\n\
7862 Emacs also does a garbage collection if that seems to be warranted.");
7863 XSETFASTINT (Vauto_save_timeout
, 30);
7865 DEFVAR_INT ("echo-keystrokes", &echo_keystrokes
,
7866 "*Nonzero means echo unfinished commands after this many seconds of pause.");
7867 echo_keystrokes
= 1;
7869 DEFVAR_INT ("polling-period", &polling_period
,
7870 "*Interval between polling for input during Lisp execution.\n\
7871 The reason for polling is to make C-g work to stop a running program.\n\
7872 Polling is needed only when using X windows and SIGIO does not work.\n\
7873 Polling is automatically disabled in all other cases.");
7876 DEFVAR_LISP ("double-click-time", &Vdouble_click_time
,
7877 "*Maximum time between mouse clicks to make a double-click.\n\
7878 Measured in milliseconds. nil means disable double-click recognition;\n\
7879 t means double-clicks have no time limit and are detected\n\
7880 by position only.");
7881 Vdouble_click_time
= make_number (500);
7883 DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus
,
7884 "*Non-nil means inhibit local map menu bar menus.");
7885 inhibit_local_menu_bar_menus
= 0;
7887 DEFVAR_INT ("num-input-keys", &num_input_keys
,
7888 "Number of complete keys read from the keyboard so far.");
7891 DEFVAR_LISP ("last-event-frame", &Vlast_event_frame
,
7892 "The frame in which the most recently read event occurred.\n\
7893 If the last event came from a keyboard macro, this is set to `macro'.");
7894 Vlast_event_frame
= Qnil
;
7896 DEFVAR_LISP ("help-char", &Vhelp_char
,
7897 "Character to recognize as meaning Help.\n\
7898 When it is read, do `(eval help-form)', and display result if it's a string.\n\
7899 If the value of `help-form' is nil, this char can be read normally.");
7900 XSETINT (Vhelp_char
, Ctl ('H'));
7902 DEFVAR_LISP ("help-event-list", &Vhelp_event_list
,
7903 "List of input events to recognize as meaning Help.\n\
7904 These work just like the value of `help-char' (see that).");
7905 Vhelp_event_list
= Qnil
;
7907 DEFVAR_LISP ("help-form", &Vhelp_form
,
7908 "Form to execute when character `help-char' is read.\n\
7909 If the form returns a string, that string is displayed.\n\
7910 If `help-form' is nil, the help char is not recognized.");
7913 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command
,
7914 "Command to run when `help-char' character follows a prefix key.\n\
7915 This command is used only when there is no actual binding\n\
7916 for that character after that prefix key.");
7917 Vprefix_help_command
= Qnil
;
7919 DEFVAR_LISP ("top-level", &Vtop_level
,
7920 "Form to evaluate when Emacs starts up.\n\
7921 Useful to set before you dump a modified Emacs.");
7924 DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table
,
7925 "Translate table for keyboard input, or nil.\n\
7926 Each character is looked up in this string and the contents used instead.\n\
7927 The value may be a string, a vector, or a char-table.\n\
7928 If it is a string or vector of length N,\n\
7929 character codes N and up are untranslated.\n\
7930 In a vector or a char-table, an element which is nil means \"no translation\".");
7931 Vkeyboard_translate_table
= Qnil
;
7933 DEFVAR_BOOL ("cannot-suspend", &cannot_suspend
,
7934 "Non-nil means to always spawn a subshell instead of suspending,\n\
7935 even if the operating system has support for stopping a process.");
7938 DEFVAR_BOOL ("menu-prompting", &menu_prompting
,
7939 "Non-nil means prompt with menus when appropriate.\n\
7940 This is done when reading from a keymap that has a prompt string,\n\
7941 for elements that have prompt strings.\n\
7942 The menu is displayed on the screen\n\
7943 if X menus were enabled at configuration\n\
7944 time and the previous event was a mouse click prefix key.\n\
7945 Otherwise, menu prompting uses the echo area.");
7948 DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char
,
7949 "Character to see next line of menu prompt.\n\
7950 Type this character while in a menu prompt to rotate around the lines of it.");
7951 XSETINT (menu_prompt_more_char
, ' ');
7953 DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers
,
7954 "A mask of additional modifier keys to use with every keyboard character.\n\
7955 Emacs applies the modifiers of the character stored here to each keyboard\n\
7956 character it reads. For example, after evaluating the expression\n\
7957 (setq extra-keyboard-modifiers ?\\C-x)\n\
7958 all input characters will have the control modifier applied to them.\n\
7960 Note that the character ?\\C-@, equivalent to the integer zero, does\n\
7961 not count as a control character; rather, it counts as a character\n\
7962 with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\
7963 cancels any modification.");
7964 extra_keyboard_modifiers
= 0;
7966 DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark
,
7967 "If an editing command sets this to t, deactivate the mark afterward.\n\
7968 The command loop sets this to nil before each command,\n\
7969 and tests the value when the command returns.\n\
7970 Buffer modification stores t in this variable.");
7971 Vdeactivate_mark
= Qnil
;
7973 DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal
,
7974 "Temporary storage of pre-command-hook or post-command-hook.");
7975 Vcommand_hook_internal
= Qnil
;
7977 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook
,
7978 "Normal hook run before each command is executed.\n\
7979 Errors running the hook are caught and ignored.");
7980 Vpre_command_hook
= Qnil
;
7982 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook
,
7983 "Normal hook run after each command is executed.\n\
7984 Errors running the hook are caught and ignored.");
7985 Vpost_command_hook
= Qnil
;
7987 DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook
,
7988 "Normal hook run after each command is executed, if idle.\n\
7989 Errors running the hook are caught and ignored.");
7990 Vpost_command_idle_hook
= Qnil
;
7992 DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay
,
7993 "Delay time before running `post-command-idle-hook'.\n\
7994 This is measured in microseconds.");
7995 post_command_idle_delay
= 100000;
7997 DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag
,
7998 "t means menu bar, specified Lucid style, needs to be recomputed.");
7999 Vlucid_menu_bar_dirty_flag
= Qnil
;
8001 DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items
,
8002 "List of menu bar items to move to the end of the menu bar.\n\
8003 The elements of the list are event types that may have menu bar bindings.");
8004 Vmenu_bar_final_items
= Qnil
;
8006 DEFVAR_KBOARD ("overriding-terminal-local-map",
8007 Voverriding_terminal_local_map
,
8008 "Keymap that overrides all other local keymaps.\n\
8009 If this variable is non-nil, it is used as a keymap instead of the\n\
8010 buffer's local map, and the minor mode keymaps and text property keymaps.");
8012 DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map
,
8013 "Keymap that overrides all other local keymaps.\n\
8014 If this variable is non-nil, it is used as a keymap instead of the\n\
8015 buffer's local map, and the minor mode keymaps and text property keymaps.");
8016 Voverriding_local_map
= Qnil
;
8018 DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag
,
8019 "Non-nil means `overriding-local-map' applies to the menu bar.\n\
8020 Otherwise, the menu bar continues to reflect the buffer's local map\n\
8021 and the minor mode maps regardless of `overriding-local-map'.");
8022 Voverriding_local_map_menu_flag
= Qnil
;
8024 DEFVAR_LISP ("special-event-map", &Vspecial_event_map
,
8025 "Keymap defining bindings for special events to execute at low level.");
8026 Vspecial_event_map
= Fcons (intern ("keymap"), Qnil
);
8028 DEFVAR_LISP ("track-mouse", &do_mouse_tracking
,
8029 "*Non-nil means generate motion events for mouse motion.");
8031 DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist
,
8032 "Alist of system-specific X windows key symbols.\n\
8033 Each element should have the form (N . SYMBOL) where N is the\n\
8034 numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\
8035 and SYMBOL is its name.");
8037 DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list
,
8038 "List of deferred actions to be performed at a later time.\n\
8039 The precise format isn't relevant here; we just check whether it is nil.");
8040 Vdeferred_action_list
= Qnil
;
8042 DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function
,
8043 "Function to call to handle deferred actions, after each command.\n\
8044 This function is called with no arguments after each command\n\
8045 whenever `deferred-action-list' is non-nil.");
8046 Vdeferred_action_function
= Qnil
;
8048 DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings
,
8049 "Non-nil means show the equivalent key-binding when M-x command has one.\n\
8050 The value can be a length of time to show the message for.\n\
8051 If the value is non-nil and not a number, we wait 2 seconds.");
8052 Vsuggest_key_bindings
= Qt
;
8054 DEFVAR_LISP ("column-number-mode", &Vcolumn_number_mode
,
8055 "Non-nil enables display of the current column number in the mode line.");
8056 Vcolumn_number_mode
= Qnil
;
8058 DEFVAR_LISP ("timer-list", &Vtimer_list
,
8059 "List of active absolute time timers in order of increasing time");
8062 DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list
,
8063 "List of active idle-time timers in order of increasing time");
8064 Vtimer_idle_list
= Qnil
;
8069 initial_define_key (global_map
, Ctl ('Z'), "suspend-emacs");
8070 initial_define_key (control_x_map
, Ctl ('Z'), "suspend-emacs");
8071 initial_define_key (meta_map
, Ctl ('C'), "exit-recursive-edit");
8072 initial_define_key (global_map
, Ctl (']'), "abort-recursive-edit");
8073 initial_define_key (meta_map
, 'x', "execute-extended-command");
8075 initial_define_lispy_key (Vspecial_event_map
, "delete-frame",
8076 "handle-delete-frame");
8077 initial_define_lispy_key (Vspecial_event_map
, "iconify-frame",
8079 initial_define_lispy_key (Vspecial_event_map
, "make-frame-visible",